2 * Copyright 2012 Advanced Micro Devices, Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
24 #include "gallivm/lp_bld_const.h"
25 #include "gallivm/lp_bld_gather.h"
26 #include "gallivm/lp_bld_intr.h"
27 #include "gallivm/lp_bld_logic.h"
28 #include "gallivm/lp_bld_arit.h"
29 #include "gallivm/lp_bld_flow.h"
30 #include "gallivm/lp_bld_misc.h"
31 #include "util/u_memory.h"
32 #include "util/u_string.h"
33 #include "tgsi/tgsi_build.h"
34 #include "tgsi/tgsi_util.h"
35 #include "tgsi/tgsi_dump.h"
37 #include "ac_binary.h"
38 #include "ac_llvm_util.h"
39 #include "ac_exp_param.h"
40 #include "si_shader_internal.h"
44 #include "compiler/nir/nir.h"
46 static const char *scratch_rsrc_dword0_symbol
=
47 "SCRATCH_RSRC_DWORD0";
49 static const char *scratch_rsrc_dword1_symbol
=
50 "SCRATCH_RSRC_DWORD1";
52 struct si_shader_output_values
54 LLVMValueRef values
[4];
55 unsigned semantic_name
;
56 unsigned semantic_index
;
57 ubyte vertex_stream
[4];
61 * Used to collect types and other info about arguments of the LLVM function
62 * before the function is created.
64 struct si_function_info
{
65 LLVMTypeRef types
[100];
66 LLVMValueRef
*assign
[100];
67 unsigned num_sgpr_params
;
76 static void si_init_shader_ctx(struct si_shader_context
*ctx
,
77 struct si_screen
*sscreen
,
78 LLVMTargetMachineRef tm
);
80 static void si_llvm_emit_barrier(const struct lp_build_tgsi_action
*action
,
81 struct lp_build_tgsi_context
*bld_base
,
82 struct lp_build_emit_data
*emit_data
);
84 static void si_dump_shader_key(unsigned processor
, const struct si_shader
*shader
,
87 static void si_build_vs_prolog_function(struct si_shader_context
*ctx
,
88 union si_shader_part_key
*key
);
89 static void si_build_tcs_epilog_function(struct si_shader_context
*ctx
,
90 union si_shader_part_key
*key
);
91 static void si_build_ps_prolog_function(struct si_shader_context
*ctx
,
92 union si_shader_part_key
*key
);
93 static void si_build_ps_epilog_function(struct si_shader_context
*ctx
,
94 union si_shader_part_key
*key
);
96 /* Ideally pass the sample mask input to the PS epilog as v14, which
97 * is its usual location, so that the shader doesn't have to add v_mov.
99 #define PS_EPILOG_SAMPLEMASK_MIN_LOC 14
102 CONST_ADDR_SPACE
= 2,
103 LOCAL_ADDR_SPACE
= 3,
106 static bool is_merged_shader(struct si_shader
*shader
)
108 if (shader
->selector
->screen
->b
.chip_class
<= VI
)
111 return shader
->key
.as_ls
||
113 shader
->selector
->type
== PIPE_SHADER_TESS_CTRL
||
114 shader
->selector
->type
== PIPE_SHADER_GEOMETRY
;
117 static void si_init_function_info(struct si_function_info
*fninfo
)
119 fninfo
->num_params
= 0;
120 fninfo
->num_sgpr_params
= 0;
123 static unsigned add_arg_assign(struct si_function_info
*fninfo
,
124 enum si_arg_regfile regfile
, LLVMTypeRef type
,
125 LLVMValueRef
*assign
)
127 assert(regfile
!= ARG_SGPR
|| fninfo
->num_sgpr_params
== fninfo
->num_params
);
129 unsigned idx
= fninfo
->num_params
++;
130 assert(idx
< ARRAY_SIZE(fninfo
->types
));
132 if (regfile
== ARG_SGPR
)
133 fninfo
->num_sgpr_params
= fninfo
->num_params
;
135 fninfo
->types
[idx
] = type
;
136 fninfo
->assign
[idx
] = assign
;
140 static unsigned add_arg(struct si_function_info
*fninfo
,
141 enum si_arg_regfile regfile
, LLVMTypeRef type
)
143 return add_arg_assign(fninfo
, regfile
, type
, NULL
);
146 static void add_arg_assign_checked(struct si_function_info
*fninfo
,
147 enum si_arg_regfile regfile
, LLVMTypeRef type
,
148 LLVMValueRef
*assign
, unsigned idx
)
150 MAYBE_UNUSED
unsigned actual
= add_arg_assign(fninfo
, regfile
, type
, assign
);
151 assert(actual
== idx
);
154 static void add_arg_checked(struct si_function_info
*fninfo
,
155 enum si_arg_regfile regfile
, LLVMTypeRef type
,
158 add_arg_assign_checked(fninfo
, regfile
, type
, NULL
, idx
);
162 * Returns a unique index for a per-patch semantic name and index. The index
163 * must be less than 32, so that a 32-bit bitmask of used inputs or outputs
166 unsigned si_shader_io_get_unique_index_patch(unsigned semantic_name
, unsigned index
)
168 switch (semantic_name
) {
169 case TGSI_SEMANTIC_TESSOUTER
:
171 case TGSI_SEMANTIC_TESSINNER
:
173 case TGSI_SEMANTIC_PATCH
:
178 assert(!"invalid semantic name");
184 * Returns a unique index for a semantic name and index. The index must be
185 * less than 64, so that a 64-bit bitmask of used inputs or outputs can be
188 unsigned si_shader_io_get_unique_index(unsigned semantic_name
, unsigned index
)
190 switch (semantic_name
) {
191 case TGSI_SEMANTIC_POSITION
:
193 case TGSI_SEMANTIC_GENERIC
:
194 /* Since some shader stages use the the highest used IO index
195 * to determine the size to allocate for inputs/outputs
196 * (in LDS, tess and GS rings). GENERIC should be placed right
197 * after POSITION to make that size as small as possible.
199 if (index
< SI_MAX_IO_GENERIC
)
202 assert(!"invalid generic index");
204 case TGSI_SEMANTIC_PSIZE
:
205 return SI_MAX_IO_GENERIC
+ 1;
206 case TGSI_SEMANTIC_CLIPDIST
:
208 return SI_MAX_IO_GENERIC
+ 2 + index
;
209 case TGSI_SEMANTIC_FOG
:
210 return SI_MAX_IO_GENERIC
+ 4;
211 case TGSI_SEMANTIC_LAYER
:
212 return SI_MAX_IO_GENERIC
+ 5;
213 case TGSI_SEMANTIC_VIEWPORT_INDEX
:
214 return SI_MAX_IO_GENERIC
+ 6;
215 case TGSI_SEMANTIC_PRIMID
:
216 return SI_MAX_IO_GENERIC
+ 7;
217 case TGSI_SEMANTIC_COLOR
: /* these alias */
218 case TGSI_SEMANTIC_BCOLOR
:
220 return SI_MAX_IO_GENERIC
+ 8 + index
;
221 case TGSI_SEMANTIC_TEXCOORD
:
223 assert(SI_MAX_IO_GENERIC
+ 10 + index
< 64);
224 return SI_MAX_IO_GENERIC
+ 10 + index
;
226 assert(!"invalid semantic name");
232 * Get the value of a shader input parameter and extract a bitfield.
234 static LLVMValueRef
unpack_param(struct si_shader_context
*ctx
,
235 unsigned param
, unsigned rshift
,
238 LLVMValueRef value
= LLVMGetParam(ctx
->main_fn
,
241 if (LLVMGetTypeKind(LLVMTypeOf(value
)) == LLVMFloatTypeKind
)
242 value
= ac_to_integer(&ctx
->ac
, value
);
245 value
= LLVMBuildLShr(ctx
->ac
.builder
, value
,
246 LLVMConstInt(ctx
->i32
, rshift
, 0), "");
248 if (rshift
+ bitwidth
< 32) {
249 unsigned mask
= (1 << bitwidth
) - 1;
250 value
= LLVMBuildAnd(ctx
->ac
.builder
, value
,
251 LLVMConstInt(ctx
->i32
, mask
, 0), "");
257 static LLVMValueRef
get_rel_patch_id(struct si_shader_context
*ctx
)
260 case PIPE_SHADER_TESS_CTRL
:
261 return unpack_param(ctx
, ctx
->param_tcs_rel_ids
, 0, 8);
263 case PIPE_SHADER_TESS_EVAL
:
264 return LLVMGetParam(ctx
->main_fn
,
265 ctx
->param_tes_rel_patch_id
);
273 /* Tessellation shaders pass outputs to the next shader using LDS.
275 * LS outputs = TCS inputs
276 * TCS outputs = TES inputs
279 * - TCS inputs for patch 0
280 * - TCS inputs for patch 1
281 * - TCS inputs for patch 2 = get_tcs_in_current_patch_offset (if RelPatchID==2)
283 * - TCS outputs for patch 0 = get_tcs_out_patch0_offset
284 * - Per-patch TCS outputs for patch 0 = get_tcs_out_patch0_patch_data_offset
285 * - TCS outputs for patch 1
286 * - Per-patch TCS outputs for patch 1
287 * - TCS outputs for patch 2 = get_tcs_out_current_patch_offset (if RelPatchID==2)
288 * - Per-patch TCS outputs for patch 2 = get_tcs_out_current_patch_data_offset (if RelPatchID==2)
291 * All three shaders VS(LS), TCS, TES share the same LDS space.
295 get_tcs_in_patch_stride(struct si_shader_context
*ctx
)
297 return unpack_param(ctx
, ctx
->param_vs_state_bits
, 8, 13);
300 static unsigned get_tcs_out_vertex_dw_stride_constant(struct si_shader_context
*ctx
)
302 assert(ctx
->type
== PIPE_SHADER_TESS_CTRL
);
304 if (ctx
->shader
->key
.mono
.u
.ff_tcs_inputs_to_copy
)
305 return util_last_bit64(ctx
->shader
->key
.mono
.u
.ff_tcs_inputs_to_copy
) * 4;
307 return util_last_bit64(ctx
->shader
->selector
->outputs_written
) * 4;
310 static LLVMValueRef
get_tcs_out_vertex_dw_stride(struct si_shader_context
*ctx
)
312 unsigned stride
= get_tcs_out_vertex_dw_stride_constant(ctx
);
314 return LLVMConstInt(ctx
->i32
, stride
, 0);
317 static LLVMValueRef
get_tcs_out_patch_stride(struct si_shader_context
*ctx
)
319 if (ctx
->shader
->key
.mono
.u
.ff_tcs_inputs_to_copy
)
320 return unpack_param(ctx
, ctx
->param_tcs_out_lds_layout
, 0, 13);
322 const struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
323 unsigned tcs_out_vertices
= info
->properties
[TGSI_PROPERTY_TCS_VERTICES_OUT
];
324 unsigned vertex_dw_stride
= get_tcs_out_vertex_dw_stride_constant(ctx
);
325 unsigned num_patch_outputs
= util_last_bit64(ctx
->shader
->selector
->patch_outputs_written
);
326 unsigned patch_dw_stride
= tcs_out_vertices
* vertex_dw_stride
+
327 num_patch_outputs
* 4;
328 return LLVMConstInt(ctx
->i32
, patch_dw_stride
, 0);
332 get_tcs_out_patch0_offset(struct si_shader_context
*ctx
)
334 return lp_build_mul_imm(&ctx
->bld_base
.uint_bld
,
336 ctx
->param_tcs_out_lds_offsets
,
342 get_tcs_out_patch0_patch_data_offset(struct si_shader_context
*ctx
)
344 return lp_build_mul_imm(&ctx
->bld_base
.uint_bld
,
346 ctx
->param_tcs_out_lds_offsets
,
352 get_tcs_in_current_patch_offset(struct si_shader_context
*ctx
)
354 LLVMValueRef patch_stride
= get_tcs_in_patch_stride(ctx
);
355 LLVMValueRef rel_patch_id
= get_rel_patch_id(ctx
);
357 return LLVMBuildMul(ctx
->ac
.builder
, patch_stride
, rel_patch_id
, "");
361 get_tcs_out_current_patch_offset(struct si_shader_context
*ctx
)
363 LLVMValueRef patch0_offset
= get_tcs_out_patch0_offset(ctx
);
364 LLVMValueRef patch_stride
= get_tcs_out_patch_stride(ctx
);
365 LLVMValueRef rel_patch_id
= get_rel_patch_id(ctx
);
367 return LLVMBuildAdd(ctx
->ac
.builder
, patch0_offset
,
368 LLVMBuildMul(ctx
->ac
.builder
, patch_stride
,
374 get_tcs_out_current_patch_data_offset(struct si_shader_context
*ctx
)
376 LLVMValueRef patch0_patch_data_offset
=
377 get_tcs_out_patch0_patch_data_offset(ctx
);
378 LLVMValueRef patch_stride
= get_tcs_out_patch_stride(ctx
);
379 LLVMValueRef rel_patch_id
= get_rel_patch_id(ctx
);
381 return LLVMBuildAdd(ctx
->ac
.builder
, patch0_patch_data_offset
,
382 LLVMBuildMul(ctx
->ac
.builder
, patch_stride
,
387 static LLVMValueRef
get_num_tcs_out_vertices(struct si_shader_context
*ctx
)
389 unsigned tcs_out_vertices
=
390 ctx
->shader
->selector
?
391 ctx
->shader
->selector
->info
.properties
[TGSI_PROPERTY_TCS_VERTICES_OUT
] : 0;
393 /* If !tcs_out_vertices, it's either the fixed-func TCS or the TCS epilog. */
394 if (ctx
->type
== PIPE_SHADER_TESS_CTRL
&& tcs_out_vertices
)
395 return LLVMConstInt(ctx
->i32
, tcs_out_vertices
, 0);
397 return unpack_param(ctx
, ctx
->param_tcs_offchip_layout
, 6, 6);
400 static LLVMValueRef
get_tcs_in_vertex_dw_stride(struct si_shader_context
*ctx
)
405 case PIPE_SHADER_VERTEX
:
406 stride
= util_last_bit64(ctx
->shader
->selector
->outputs_written
);
407 return LLVMConstInt(ctx
->i32
, stride
* 4, 0);
409 case PIPE_SHADER_TESS_CTRL
:
410 if (ctx
->screen
->b
.chip_class
>= GFX9
&&
411 ctx
->shader
->is_monolithic
) {
412 stride
= util_last_bit64(ctx
->shader
->key
.part
.tcs
.ls
->outputs_written
);
413 return LLVMConstInt(ctx
->i32
, stride
* 4, 0);
415 return unpack_param(ctx
, ctx
->param_vs_state_bits
, 24, 8);
423 static LLVMValueRef
get_instance_index_for_fetch(
424 struct si_shader_context
*ctx
,
425 unsigned param_start_instance
, LLVMValueRef divisor
)
427 LLVMValueRef result
= ctx
->abi
.instance_id
;
429 /* The division must be done before START_INSTANCE is added. */
430 if (divisor
!= ctx
->i32_1
)
431 result
= LLVMBuildUDiv(ctx
->ac
.builder
, result
, divisor
, "");
433 return LLVMBuildAdd(ctx
->ac
.builder
, result
,
434 LLVMGetParam(ctx
->main_fn
, param_start_instance
), "");
437 /* Bitcast <4 x float> to <2 x double>, extract the component, and convert
439 static LLVMValueRef
extract_double_to_float(struct si_shader_context
*ctx
,
441 unsigned double_index
)
443 LLVMBuilderRef builder
= ctx
->ac
.builder
;
444 LLVMTypeRef f64
= LLVMDoubleTypeInContext(ctx
->ac
.context
);
445 LLVMValueRef dvec2
= LLVMBuildBitCast(builder
, vec4
,
446 LLVMVectorType(f64
, 2), "");
447 LLVMValueRef index
= LLVMConstInt(ctx
->i32
, double_index
, 0);
448 LLVMValueRef value
= LLVMBuildExtractElement(builder
, dvec2
, index
, "");
449 return LLVMBuildFPTrunc(builder
, value
, ctx
->f32
, "");
452 static LLVMValueRef
unpack_sint16(struct si_shader_context
*ctx
,
453 LLVMValueRef i32
, unsigned index
)
458 return LLVMBuildAShr(ctx
->ac
.builder
, i32
,
459 LLVMConstInt(ctx
->i32
, 16, 0), "");
461 return LLVMBuildSExt(ctx
->ac
.builder
,
462 LLVMBuildTrunc(ctx
->ac
.builder
, i32
,
467 void si_llvm_load_input_vs(
468 struct si_shader_context
*ctx
,
469 unsigned input_index
,
472 unsigned vs_blit_property
=
473 ctx
->shader
->selector
->info
.properties
[TGSI_PROPERTY_VS_BLIT_SGPRS
];
475 if (vs_blit_property
) {
476 LLVMValueRef vertex_id
= ctx
->abi
.vertex_id
;
477 LLVMValueRef sel_x1
= LLVMBuildICmp(ctx
->ac
.builder
,
478 LLVMIntULE
, vertex_id
,
480 /* Use LLVMIntNE, because we have 3 vertices and only
481 * the middle one should use y2.
483 LLVMValueRef sel_y1
= LLVMBuildICmp(ctx
->ac
.builder
,
484 LLVMIntNE
, vertex_id
,
487 if (input_index
== 0) {
489 LLVMValueRef x1y1
= LLVMGetParam(ctx
->main_fn
,
490 ctx
->param_vs_blit_inputs
);
491 LLVMValueRef x2y2
= LLVMGetParam(ctx
->main_fn
,
492 ctx
->param_vs_blit_inputs
+ 1);
494 LLVMValueRef x1
= unpack_sint16(ctx
, x1y1
, 0);
495 LLVMValueRef y1
= unpack_sint16(ctx
, x1y1
, 1);
496 LLVMValueRef x2
= unpack_sint16(ctx
, x2y2
, 0);
497 LLVMValueRef y2
= unpack_sint16(ctx
, x2y2
, 1);
499 LLVMValueRef x
= LLVMBuildSelect(ctx
->ac
.builder
, sel_x1
,
501 LLVMValueRef y
= LLVMBuildSelect(ctx
->ac
.builder
, sel_y1
,
504 out
[0] = LLVMBuildSIToFP(ctx
->ac
.builder
, x
, ctx
->f32
, "");
505 out
[1] = LLVMBuildSIToFP(ctx
->ac
.builder
, y
, ctx
->f32
, "");
506 out
[2] = LLVMGetParam(ctx
->main_fn
,
507 ctx
->param_vs_blit_inputs
+ 2);
508 out
[3] = ctx
->ac
.f32_1
;
512 /* Color or texture coordinates: */
513 assert(input_index
== 1);
515 if (vs_blit_property
== SI_VS_BLIT_SGPRS_POS_COLOR
) {
516 for (int i
= 0; i
< 4; i
++) {
517 out
[i
] = LLVMGetParam(ctx
->main_fn
,
518 ctx
->param_vs_blit_inputs
+ 3 + i
);
521 assert(vs_blit_property
== SI_VS_BLIT_SGPRS_POS_TEXCOORD
);
522 LLVMValueRef x1
= LLVMGetParam(ctx
->main_fn
,
523 ctx
->param_vs_blit_inputs
+ 3);
524 LLVMValueRef y1
= LLVMGetParam(ctx
->main_fn
,
525 ctx
->param_vs_blit_inputs
+ 4);
526 LLVMValueRef x2
= LLVMGetParam(ctx
->main_fn
,
527 ctx
->param_vs_blit_inputs
+ 5);
528 LLVMValueRef y2
= LLVMGetParam(ctx
->main_fn
,
529 ctx
->param_vs_blit_inputs
+ 6);
531 out
[0] = LLVMBuildSelect(ctx
->ac
.builder
, sel_x1
,
533 out
[1] = LLVMBuildSelect(ctx
->ac
.builder
, sel_y1
,
535 out
[2] = LLVMGetParam(ctx
->main_fn
,
536 ctx
->param_vs_blit_inputs
+ 7);
537 out
[3] = LLVMGetParam(ctx
->main_fn
,
538 ctx
->param_vs_blit_inputs
+ 8);
545 unsigned num_fetches
;
546 unsigned fetch_stride
;
548 LLVMValueRef t_list_ptr
;
549 LLVMValueRef t_offset
;
551 LLVMValueRef vertex_index
;
552 LLVMValueRef input
[3];
554 /* Load the T list */
555 t_list_ptr
= LLVMGetParam(ctx
->main_fn
, ctx
->param_vertex_buffers
);
557 t_offset
= LLVMConstInt(ctx
->i32
, input_index
, 0);
559 t_list
= ac_build_load_to_sgpr(&ctx
->ac
, t_list_ptr
, t_offset
);
561 vertex_index
= LLVMGetParam(ctx
->main_fn
,
562 ctx
->param_vertex_index0
+
565 fix_fetch
= ctx
->shader
->key
.mono
.vs_fix_fetch
[input_index
];
567 /* Do multiple loads for special formats. */
569 case SI_FIX_FETCH_RGB_64_FLOAT
:
570 num_fetches
= 3; /* 3 2-dword loads */
573 case SI_FIX_FETCH_RGBA_64_FLOAT
:
574 num_fetches
= 2; /* 2 4-dword loads */
577 case SI_FIX_FETCH_RGB_8
:
578 case SI_FIX_FETCH_RGB_8_INT
:
582 case SI_FIX_FETCH_RGB_16
:
583 case SI_FIX_FETCH_RGB_16_INT
:
592 for (unsigned i
= 0; i
< num_fetches
; i
++) {
593 LLVMValueRef voffset
= LLVMConstInt(ctx
->i32
, fetch_stride
* i
, 0);
595 input
[i
] = ac_build_buffer_load_format(&ctx
->ac
, t_list
,
596 vertex_index
, voffset
,
600 /* Break up the vec4 into individual components */
601 for (chan
= 0; chan
< 4; chan
++) {
602 LLVMValueRef llvm_chan
= LLVMConstInt(ctx
->i32
, chan
, 0);
603 out
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
604 input
[0], llvm_chan
, "");
608 case SI_FIX_FETCH_A2_SNORM
:
609 case SI_FIX_FETCH_A2_SSCALED
:
610 case SI_FIX_FETCH_A2_SINT
: {
611 /* The hardware returns an unsigned value; convert it to a
614 LLVMValueRef tmp
= out
[3];
615 LLVMValueRef c30
= LLVMConstInt(ctx
->i32
, 30, 0);
617 /* First, recover the sign-extended signed integer value. */
618 if (fix_fetch
== SI_FIX_FETCH_A2_SSCALED
)
619 tmp
= LLVMBuildFPToUI(ctx
->ac
.builder
, tmp
, ctx
->i32
, "");
621 tmp
= ac_to_integer(&ctx
->ac
, tmp
);
623 /* For the integer-like cases, do a natural sign extension.
625 * For the SNORM case, the values are 0.0, 0.333, 0.666, 1.0
626 * and happen to contain 0, 1, 2, 3 as the two LSBs of the
629 tmp
= LLVMBuildShl(ctx
->ac
.builder
, tmp
,
630 fix_fetch
== SI_FIX_FETCH_A2_SNORM
?
631 LLVMConstInt(ctx
->i32
, 7, 0) : c30
, "");
632 tmp
= LLVMBuildAShr(ctx
->ac
.builder
, tmp
, c30
, "");
634 /* Convert back to the right type. */
635 if (fix_fetch
== SI_FIX_FETCH_A2_SNORM
) {
637 LLVMValueRef neg_one
= LLVMConstReal(ctx
->f32
, -1.0);
638 tmp
= LLVMBuildSIToFP(ctx
->ac
.builder
, tmp
, ctx
->f32
, "");
639 clamp
= LLVMBuildFCmp(ctx
->ac
.builder
, LLVMRealULT
, tmp
, neg_one
, "");
640 tmp
= LLVMBuildSelect(ctx
->ac
.builder
, clamp
, neg_one
, tmp
, "");
641 } else if (fix_fetch
== SI_FIX_FETCH_A2_SSCALED
) {
642 tmp
= LLVMBuildSIToFP(ctx
->ac
.builder
, tmp
, ctx
->f32
, "");
648 case SI_FIX_FETCH_RGBA_32_UNORM
:
649 case SI_FIX_FETCH_RGBX_32_UNORM
:
650 for (chan
= 0; chan
< 4; chan
++) {
651 out
[chan
] = ac_to_integer(&ctx
->ac
, out
[chan
]);
652 out
[chan
] = LLVMBuildUIToFP(ctx
->ac
.builder
,
653 out
[chan
], ctx
->f32
, "");
654 out
[chan
] = LLVMBuildFMul(ctx
->ac
.builder
, out
[chan
],
655 LLVMConstReal(ctx
->f32
, 1.0 / UINT_MAX
), "");
657 /* RGBX UINT returns 1 in alpha, which would be rounded to 0 by normalizing. */
658 if (fix_fetch
== SI_FIX_FETCH_RGBX_32_UNORM
)
659 out
[3] = LLVMConstReal(ctx
->f32
, 1);
661 case SI_FIX_FETCH_RGBA_32_SNORM
:
662 case SI_FIX_FETCH_RGBX_32_SNORM
:
663 case SI_FIX_FETCH_RGBA_32_FIXED
:
664 case SI_FIX_FETCH_RGBX_32_FIXED
: {
666 if (fix_fetch
>= SI_FIX_FETCH_RGBA_32_FIXED
)
667 scale
= 1.0 / 0x10000;
669 scale
= 1.0 / INT_MAX
;
671 for (chan
= 0; chan
< 4; chan
++) {
672 out
[chan
] = ac_to_integer(&ctx
->ac
, out
[chan
]);
673 out
[chan
] = LLVMBuildSIToFP(ctx
->ac
.builder
,
674 out
[chan
], ctx
->f32
, "");
675 out
[chan
] = LLVMBuildFMul(ctx
->ac
.builder
, out
[chan
],
676 LLVMConstReal(ctx
->f32
, scale
), "");
678 /* RGBX SINT returns 1 in alpha, which would be rounded to 0 by normalizing. */
679 if (fix_fetch
== SI_FIX_FETCH_RGBX_32_SNORM
||
680 fix_fetch
== SI_FIX_FETCH_RGBX_32_FIXED
)
681 out
[3] = LLVMConstReal(ctx
->f32
, 1);
684 case SI_FIX_FETCH_RGBA_32_USCALED
:
685 for (chan
= 0; chan
< 4; chan
++) {
686 out
[chan
] = ac_to_integer(&ctx
->ac
, out
[chan
]);
687 out
[chan
] = LLVMBuildUIToFP(ctx
->ac
.builder
,
688 out
[chan
], ctx
->f32
, "");
691 case SI_FIX_FETCH_RGBA_32_SSCALED
:
692 for (chan
= 0; chan
< 4; chan
++) {
693 out
[chan
] = ac_to_integer(&ctx
->ac
, out
[chan
]);
694 out
[chan
] = LLVMBuildSIToFP(ctx
->ac
.builder
,
695 out
[chan
], ctx
->f32
, "");
698 case SI_FIX_FETCH_RG_64_FLOAT
:
699 for (chan
= 0; chan
< 2; chan
++)
700 out
[chan
] = extract_double_to_float(ctx
, input
[0], chan
);
702 out
[2] = LLVMConstReal(ctx
->f32
, 0);
703 out
[3] = LLVMConstReal(ctx
->f32
, 1);
705 case SI_FIX_FETCH_RGB_64_FLOAT
:
706 for (chan
= 0; chan
< 3; chan
++)
707 out
[chan
] = extract_double_to_float(ctx
, input
[chan
], 0);
709 out
[3] = LLVMConstReal(ctx
->f32
, 1);
711 case SI_FIX_FETCH_RGBA_64_FLOAT
:
712 for (chan
= 0; chan
< 4; chan
++) {
713 out
[chan
] = extract_double_to_float(ctx
, input
[chan
/ 2],
717 case SI_FIX_FETCH_RGB_8
:
718 case SI_FIX_FETCH_RGB_8_INT
:
719 case SI_FIX_FETCH_RGB_16
:
720 case SI_FIX_FETCH_RGB_16_INT
:
721 for (chan
= 0; chan
< 3; chan
++) {
722 out
[chan
] = LLVMBuildExtractElement(ctx
->ac
.builder
,
726 if (fix_fetch
== SI_FIX_FETCH_RGB_8
||
727 fix_fetch
== SI_FIX_FETCH_RGB_16
) {
728 out
[3] = LLVMConstReal(ctx
->f32
, 1);
730 out
[3] = ac_to_float(&ctx
->ac
, ctx
->i32_1
);
736 static void declare_input_vs(
737 struct si_shader_context
*ctx
,
738 unsigned input_index
,
739 const struct tgsi_full_declaration
*decl
,
742 si_llvm_load_input_vs(ctx
, input_index
, out
);
745 static LLVMValueRef
get_primitive_id(struct si_shader_context
*ctx
,
752 case PIPE_SHADER_VERTEX
:
753 return LLVMGetParam(ctx
->main_fn
,
754 ctx
->param_vs_prim_id
);
755 case PIPE_SHADER_TESS_CTRL
:
756 return LLVMGetParam(ctx
->main_fn
,
757 ctx
->param_tcs_patch_id
);
758 case PIPE_SHADER_TESS_EVAL
:
759 return LLVMGetParam(ctx
->main_fn
,
760 ctx
->param_tes_patch_id
);
761 case PIPE_SHADER_GEOMETRY
:
762 return ctx
->abi
.gs_prim_id
;
770 * Return the value of tgsi_ind_register for indexing.
771 * This is the indirect index with the constant offset added to it.
773 LLVMValueRef
si_get_indirect_index(struct si_shader_context
*ctx
,
774 const struct tgsi_ind_register
*ind
,
780 if (ind
->File
== TGSI_FILE_ADDRESS
) {
781 result
= ctx
->addrs
[ind
->Index
][ind
->Swizzle
];
782 result
= LLVMBuildLoad(ctx
->ac
.builder
, result
, "");
784 struct tgsi_full_src_register src
= {};
786 src
.Register
.File
= ind
->File
;
787 src
.Register
.Index
= ind
->Index
;
789 /* Set the second index to 0 for constants. */
790 if (ind
->File
== TGSI_FILE_CONSTANT
)
791 src
.Register
.Dimension
= 1;
793 result
= ctx
->bld_base
.emit_fetch_funcs
[ind
->File
](&ctx
->bld_base
, &src
,
796 result
= ac_to_integer(&ctx
->ac
, result
);
800 result
= LLVMBuildMul(ctx
->ac
.builder
, result
,
801 LLVMConstInt(ctx
->i32
, addr_mul
, 0), "");
802 result
= LLVMBuildAdd(ctx
->ac
.builder
, result
,
803 LLVMConstInt(ctx
->i32
, rel_index
, 0), "");
808 * Like si_get_indirect_index, but restricts the return value to a (possibly
809 * undefined) value inside [0..num).
811 LLVMValueRef
si_get_bounded_indirect_index(struct si_shader_context
*ctx
,
812 const struct tgsi_ind_register
*ind
,
813 int rel_index
, unsigned num
)
815 LLVMValueRef result
= si_get_indirect_index(ctx
, ind
, 1, rel_index
);
817 return si_llvm_bound_index(ctx
, result
, num
);
822 * Calculate a dword address given an input or output register and a stride.
824 static LLVMValueRef
get_dw_address(struct si_shader_context
*ctx
,
825 const struct tgsi_full_dst_register
*dst
,
826 const struct tgsi_full_src_register
*src
,
827 LLVMValueRef vertex_dw_stride
,
828 LLVMValueRef base_addr
)
830 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
831 ubyte
*name
, *index
, *array_first
;
833 struct tgsi_full_dst_register reg
;
835 /* Set the register description. The address computation is the same
836 * for sources and destinations. */
838 reg
.Register
.File
= src
->Register
.File
;
839 reg
.Register
.Index
= src
->Register
.Index
;
840 reg
.Register
.Indirect
= src
->Register
.Indirect
;
841 reg
.Register
.Dimension
= src
->Register
.Dimension
;
842 reg
.Indirect
= src
->Indirect
;
843 reg
.Dimension
= src
->Dimension
;
844 reg
.DimIndirect
= src
->DimIndirect
;
848 /* If the register is 2-dimensional (e.g. an array of vertices
849 * in a primitive), calculate the base address of the vertex. */
850 if (reg
.Register
.Dimension
) {
853 if (reg
.Dimension
.Indirect
)
854 index
= si_get_indirect_index(ctx
, ®
.DimIndirect
,
855 1, reg
.Dimension
.Index
);
857 index
= LLVMConstInt(ctx
->i32
, reg
.Dimension
.Index
, 0);
859 base_addr
= LLVMBuildAdd(ctx
->ac
.builder
, base_addr
,
860 LLVMBuildMul(ctx
->ac
.builder
, index
,
861 vertex_dw_stride
, ""), "");
864 /* Get information about the register. */
865 if (reg
.Register
.File
== TGSI_FILE_INPUT
) {
866 name
= info
->input_semantic_name
;
867 index
= info
->input_semantic_index
;
868 array_first
= info
->input_array_first
;
869 } else if (reg
.Register
.File
== TGSI_FILE_OUTPUT
) {
870 name
= info
->output_semantic_name
;
871 index
= info
->output_semantic_index
;
872 array_first
= info
->output_array_first
;
878 if (reg
.Register
.Indirect
) {
879 /* Add the relative address of the element. */
880 LLVMValueRef ind_index
;
882 if (reg
.Indirect
.ArrayID
)
883 first
= array_first
[reg
.Indirect
.ArrayID
];
885 first
= reg
.Register
.Index
;
887 ind_index
= si_get_indirect_index(ctx
, ®
.Indirect
,
888 1, reg
.Register
.Index
- first
);
890 base_addr
= LLVMBuildAdd(ctx
->ac
.builder
, base_addr
,
891 LLVMBuildMul(ctx
->ac
.builder
, ind_index
,
892 LLVMConstInt(ctx
->i32
, 4, 0), ""), "");
894 param
= reg
.Register
.Dimension
?
895 si_shader_io_get_unique_index(name
[first
], index
[first
]) :
896 si_shader_io_get_unique_index_patch(name
[first
], index
[first
]);
898 param
= reg
.Register
.Dimension
?
899 si_shader_io_get_unique_index(name
[reg
.Register
.Index
],
900 index
[reg
.Register
.Index
]) :
901 si_shader_io_get_unique_index_patch(name
[reg
.Register
.Index
],
902 index
[reg
.Register
.Index
]);
905 /* Add the base address of the element. */
906 return LLVMBuildAdd(ctx
->ac
.builder
, base_addr
,
907 LLVMConstInt(ctx
->i32
, param
* 4, 0), "");
910 /* The offchip buffer layout for TCS->TES is
912 * - attribute 0 of patch 0 vertex 0
913 * - attribute 0 of patch 0 vertex 1
914 * - attribute 0 of patch 0 vertex 2
916 * - attribute 0 of patch 1 vertex 0
917 * - attribute 0 of patch 1 vertex 1
919 * - attribute 1 of patch 0 vertex 0
920 * - attribute 1 of patch 0 vertex 1
922 * - per patch attribute 0 of patch 0
923 * - per patch attribute 0 of patch 1
926 * Note that every attribute has 4 components.
928 static LLVMValueRef
get_tcs_tes_buffer_address(struct si_shader_context
*ctx
,
929 LLVMValueRef rel_patch_id
,
930 LLVMValueRef vertex_index
,
931 LLVMValueRef param_index
)
933 LLVMValueRef base_addr
, vertices_per_patch
, num_patches
, total_vertices
;
934 LLVMValueRef param_stride
, constant16
;
936 vertices_per_patch
= get_num_tcs_out_vertices(ctx
);
937 num_patches
= unpack_param(ctx
, ctx
->param_tcs_offchip_layout
, 0, 6);
938 total_vertices
= LLVMBuildMul(ctx
->ac
.builder
, vertices_per_patch
,
941 constant16
= LLVMConstInt(ctx
->i32
, 16, 0);
943 base_addr
= LLVMBuildMul(ctx
->ac
.builder
, rel_patch_id
,
944 vertices_per_patch
, "");
946 base_addr
= LLVMBuildAdd(ctx
->ac
.builder
, base_addr
,
949 param_stride
= total_vertices
;
951 base_addr
= rel_patch_id
;
952 param_stride
= num_patches
;
955 base_addr
= LLVMBuildAdd(ctx
->ac
.builder
, base_addr
,
956 LLVMBuildMul(ctx
->ac
.builder
, param_index
,
957 param_stride
, ""), "");
959 base_addr
= LLVMBuildMul(ctx
->ac
.builder
, base_addr
, constant16
, "");
962 LLVMValueRef patch_data_offset
=
963 unpack_param(ctx
, ctx
->param_tcs_offchip_layout
, 12, 20);
965 base_addr
= LLVMBuildAdd(ctx
->ac
.builder
, base_addr
,
966 patch_data_offset
, "");
971 static LLVMValueRef
get_tcs_tes_buffer_address_from_reg(
972 struct si_shader_context
*ctx
,
973 const struct tgsi_full_dst_register
*dst
,
974 const struct tgsi_full_src_register
*src
)
976 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
977 ubyte
*name
, *index
, *array_first
;
978 struct tgsi_full_src_register reg
;
979 LLVMValueRef vertex_index
= NULL
;
980 LLVMValueRef param_index
= NULL
;
981 unsigned param_index_base
, param_base
;
983 reg
= src
? *src
: tgsi_full_src_register_from_dst(dst
);
985 if (reg
.Register
.Dimension
) {
987 if (reg
.Dimension
.Indirect
)
988 vertex_index
= si_get_indirect_index(ctx
, ®
.DimIndirect
,
989 1, reg
.Dimension
.Index
);
991 vertex_index
= LLVMConstInt(ctx
->i32
, reg
.Dimension
.Index
, 0);
994 /* Get information about the register. */
995 if (reg
.Register
.File
== TGSI_FILE_INPUT
) {
996 name
= info
->input_semantic_name
;
997 index
= info
->input_semantic_index
;
998 array_first
= info
->input_array_first
;
999 } else if (reg
.Register
.File
== TGSI_FILE_OUTPUT
) {
1000 name
= info
->output_semantic_name
;
1001 index
= info
->output_semantic_index
;
1002 array_first
= info
->output_array_first
;
1008 if (reg
.Register
.Indirect
) {
1009 if (reg
.Indirect
.ArrayID
)
1010 param_base
= array_first
[reg
.Indirect
.ArrayID
];
1012 param_base
= reg
.Register
.Index
;
1014 param_index
= si_get_indirect_index(ctx
, ®
.Indirect
,
1015 1, reg
.Register
.Index
- param_base
);
1018 param_base
= reg
.Register
.Index
;
1019 param_index
= ctx
->i32_0
;
1022 param_index_base
= reg
.Register
.Dimension
?
1023 si_shader_io_get_unique_index(name
[param_base
], index
[param_base
]) :
1024 si_shader_io_get_unique_index_patch(name
[param_base
], index
[param_base
]);
1026 param_index
= LLVMBuildAdd(ctx
->ac
.builder
, param_index
,
1027 LLVMConstInt(ctx
->i32
, param_index_base
, 0),
1030 return get_tcs_tes_buffer_address(ctx
, get_rel_patch_id(ctx
),
1031 vertex_index
, param_index
);
1034 static LLVMValueRef
buffer_load(struct lp_build_tgsi_context
*bld_base
,
1035 enum tgsi_opcode_type type
, unsigned swizzle
,
1036 LLVMValueRef buffer
, LLVMValueRef offset
,
1037 LLVMValueRef base
, bool can_speculate
)
1039 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1040 LLVMValueRef value
, value2
;
1041 LLVMTypeRef llvm_type
= tgsi2llvmtype(bld_base
, type
);
1042 LLVMTypeRef vec_type
= LLVMVectorType(llvm_type
, 4);
1044 if (swizzle
== ~0) {
1045 value
= ac_build_buffer_load(&ctx
->ac
, buffer
, 4, NULL
, base
, offset
,
1046 0, 1, 0, can_speculate
, false);
1048 return LLVMBuildBitCast(ctx
->ac
.builder
, value
, vec_type
, "");
1051 if (!tgsi_type_is_64bit(type
)) {
1052 value
= ac_build_buffer_load(&ctx
->ac
, buffer
, 4, NULL
, base
, offset
,
1053 0, 1, 0, can_speculate
, false);
1055 value
= LLVMBuildBitCast(ctx
->ac
.builder
, value
, vec_type
, "");
1056 return LLVMBuildExtractElement(ctx
->ac
.builder
, value
,
1057 LLVMConstInt(ctx
->i32
, swizzle
, 0), "");
1060 value
= ac_build_buffer_load(&ctx
->ac
, buffer
, 1, NULL
, base
, offset
,
1061 swizzle
* 4, 1, 0, can_speculate
, false);
1063 value2
= ac_build_buffer_load(&ctx
->ac
, buffer
, 1, NULL
, base
, offset
,
1064 swizzle
* 4 + 4, 1, 0, can_speculate
, false);
1066 return si_llvm_emit_fetch_64bit(bld_base
, type
, value
, value2
);
1072 * \param type output value type
1073 * \param swizzle offset (typically 0..3); it can be ~0, which loads a vec4
1074 * \param dw_addr address in dwords
1076 static LLVMValueRef
lds_load(struct lp_build_tgsi_context
*bld_base
,
1077 enum tgsi_opcode_type type
, unsigned swizzle
,
1078 LLVMValueRef dw_addr
)
1080 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1083 if (swizzle
== ~0) {
1084 LLVMValueRef values
[TGSI_NUM_CHANNELS
];
1086 for (unsigned chan
= 0; chan
< TGSI_NUM_CHANNELS
; chan
++)
1087 values
[chan
] = lds_load(bld_base
, type
, chan
, dw_addr
);
1089 return lp_build_gather_values(&ctx
->gallivm
, values
,
1093 /* Split 64-bit loads. */
1094 if (tgsi_type_is_64bit(type
)) {
1095 LLVMValueRef lo
, hi
;
1097 lo
= lds_load(bld_base
, TGSI_TYPE_UNSIGNED
, swizzle
, dw_addr
);
1098 hi
= lds_load(bld_base
, TGSI_TYPE_UNSIGNED
, swizzle
+ 1, dw_addr
);
1099 return si_llvm_emit_fetch_64bit(bld_base
, type
, lo
, hi
);
1102 dw_addr
= lp_build_add(&bld_base
->uint_bld
, dw_addr
,
1103 LLVMConstInt(ctx
->i32
, swizzle
, 0));
1105 value
= ac_lds_load(&ctx
->ac
, dw_addr
);
1107 return bitcast(bld_base
, type
, value
);
1113 * \param swizzle offset (typically 0..3)
1114 * \param dw_addr address in dwords
1115 * \param value value to store
1117 static void lds_store(struct lp_build_tgsi_context
*bld_base
,
1118 unsigned dw_offset_imm
, LLVMValueRef dw_addr
,
1121 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1123 dw_addr
= lp_build_add(&bld_base
->uint_bld
, dw_addr
,
1124 LLVMConstInt(ctx
->i32
, dw_offset_imm
, 0));
1126 ac_lds_store(&ctx
->ac
, dw_addr
, value
);
1129 static LLVMValueRef
desc_from_addr_base64k(struct si_shader_context
*ctx
,
1132 LLVMBuilderRef builder
= ctx
->ac
.builder
;
1134 LLVMValueRef addr
= LLVMGetParam(ctx
->main_fn
, param
);
1135 addr
= LLVMBuildZExt(builder
, addr
, ctx
->i64
, "");
1136 addr
= LLVMBuildShl(builder
, addr
, LLVMConstInt(ctx
->i64
, 16, 0), "");
1138 uint64_t desc2
= 0xffffffff;
1139 uint64_t desc3
= S_008F0C_DST_SEL_X(V_008F0C_SQ_SEL_X
) |
1140 S_008F0C_DST_SEL_Y(V_008F0C_SQ_SEL_Y
) |
1141 S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z
) |
1142 S_008F0C_DST_SEL_W(V_008F0C_SQ_SEL_W
) |
1143 S_008F0C_NUM_FORMAT(V_008F0C_BUF_NUM_FORMAT_FLOAT
) |
1144 S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32
);
1145 LLVMValueRef hi
= LLVMConstInt(ctx
->i64
, desc2
| (desc3
<< 32), 0);
1147 LLVMValueRef desc
= LLVMGetUndef(LLVMVectorType(ctx
->i64
, 2));
1148 desc
= LLVMBuildInsertElement(builder
, desc
, addr
, ctx
->i32_0
, "");
1149 desc
= LLVMBuildInsertElement(builder
, desc
, hi
, ctx
->i32_1
, "");
1150 return LLVMBuildBitCast(builder
, desc
, ctx
->v4i32
, "");
1153 static LLVMValueRef
fetch_input_tcs(
1154 struct lp_build_tgsi_context
*bld_base
,
1155 const struct tgsi_full_src_register
*reg
,
1156 enum tgsi_opcode_type type
, unsigned swizzle
)
1158 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1159 LLVMValueRef dw_addr
, stride
;
1161 stride
= get_tcs_in_vertex_dw_stride(ctx
);
1162 dw_addr
= get_tcs_in_current_patch_offset(ctx
);
1163 dw_addr
= get_dw_address(ctx
, NULL
, reg
, stride
, dw_addr
);
1165 return lds_load(bld_base
, type
, swizzle
, dw_addr
);
1168 static LLVMValueRef
fetch_output_tcs(
1169 struct lp_build_tgsi_context
*bld_base
,
1170 const struct tgsi_full_src_register
*reg
,
1171 enum tgsi_opcode_type type
, unsigned swizzle
)
1173 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1174 LLVMValueRef dw_addr
, stride
;
1176 if (reg
->Register
.Dimension
) {
1177 stride
= get_tcs_out_vertex_dw_stride(ctx
);
1178 dw_addr
= get_tcs_out_current_patch_offset(ctx
);
1179 dw_addr
= get_dw_address(ctx
, NULL
, reg
, stride
, dw_addr
);
1181 dw_addr
= get_tcs_out_current_patch_data_offset(ctx
);
1182 dw_addr
= get_dw_address(ctx
, NULL
, reg
, NULL
, dw_addr
);
1185 return lds_load(bld_base
, type
, swizzle
, dw_addr
);
1188 static LLVMValueRef
fetch_input_tes(
1189 struct lp_build_tgsi_context
*bld_base
,
1190 const struct tgsi_full_src_register
*reg
,
1191 enum tgsi_opcode_type type
, unsigned swizzle
)
1193 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1194 LLVMValueRef buffer
, base
, addr
;
1196 buffer
= desc_from_addr_base64k(ctx
, ctx
->param_tcs_offchip_addr_base64k
);
1198 base
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
1199 addr
= get_tcs_tes_buffer_address_from_reg(ctx
, NULL
, reg
);
1201 return buffer_load(bld_base
, type
, swizzle
, buffer
, base
, addr
, true);
1204 static void store_output_tcs(struct lp_build_tgsi_context
*bld_base
,
1205 const struct tgsi_full_instruction
*inst
,
1206 const struct tgsi_opcode_info
*info
,
1208 LLVMValueRef dst
[4])
1210 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1211 const struct tgsi_full_dst_register
*reg
= &inst
->Dst
[index
];
1212 const struct tgsi_shader_info
*sh_info
= &ctx
->shader
->selector
->info
;
1213 unsigned chan_index
;
1214 LLVMValueRef dw_addr
, stride
;
1215 LLVMValueRef buffer
, base
, buf_addr
;
1216 LLVMValueRef values
[4];
1217 bool skip_lds_store
;
1218 bool is_tess_factor
= false, is_tess_inner
= false;
1220 /* Only handle per-patch and per-vertex outputs here.
1221 * Vectors will be lowered to scalars and this function will be called again.
1223 if (reg
->Register
.File
!= TGSI_FILE_OUTPUT
||
1224 (dst
[0] && LLVMGetTypeKind(LLVMTypeOf(dst
[0])) == LLVMVectorTypeKind
)) {
1225 si_llvm_emit_store(bld_base
, inst
, info
, index
, dst
);
1229 if (reg
->Register
.Dimension
) {
1230 stride
= get_tcs_out_vertex_dw_stride(ctx
);
1231 dw_addr
= get_tcs_out_current_patch_offset(ctx
);
1232 dw_addr
= get_dw_address(ctx
, reg
, NULL
, stride
, dw_addr
);
1233 skip_lds_store
= !sh_info
->reads_pervertex_outputs
;
1235 dw_addr
= get_tcs_out_current_patch_data_offset(ctx
);
1236 dw_addr
= get_dw_address(ctx
, reg
, NULL
, NULL
, dw_addr
);
1237 skip_lds_store
= !sh_info
->reads_perpatch_outputs
;
1239 if (!reg
->Register
.Indirect
) {
1240 int name
= sh_info
->output_semantic_name
[reg
->Register
.Index
];
1242 /* Always write tess factors into LDS for the TCS epilog. */
1243 if (name
== TGSI_SEMANTIC_TESSINNER
||
1244 name
== TGSI_SEMANTIC_TESSOUTER
) {
1245 /* The epilog doesn't read LDS if invocation 0 defines tess factors. */
1246 skip_lds_store
= !sh_info
->reads_tessfactor_outputs
&&
1247 ctx
->shader
->selector
->tcs_info
.tessfactors_are_def_in_all_invocs
;
1248 is_tess_factor
= true;
1249 is_tess_inner
= name
== TGSI_SEMANTIC_TESSINNER
;
1254 buffer
= desc_from_addr_base64k(ctx
, ctx
->param_tcs_offchip_addr_base64k
);
1256 base
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
1257 buf_addr
= get_tcs_tes_buffer_address_from_reg(ctx
, reg
, NULL
);
1259 uint32_t writemask
= reg
->Register
.WriteMask
;
1261 chan_index
= u_bit_scan(&writemask
);
1262 LLVMValueRef value
= dst
[chan_index
];
1264 if (inst
->Instruction
.Saturate
)
1265 value
= ac_build_clamp(&ctx
->ac
, value
);
1267 /* Skip LDS stores if there is no LDS read of this output. */
1268 if (!skip_lds_store
)
1269 lds_store(bld_base
, chan_index
, dw_addr
, value
);
1271 value
= ac_to_integer(&ctx
->ac
, value
);
1272 values
[chan_index
] = value
;
1274 if (reg
->Register
.WriteMask
!= 0xF && !is_tess_factor
) {
1275 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, value
, 1,
1277 4 * chan_index
, 1, 0, true, false);
1280 /* Write tess factors into VGPRs for the epilog. */
1281 if (is_tess_factor
&&
1282 ctx
->shader
->selector
->tcs_info
.tessfactors_are_def_in_all_invocs
) {
1283 if (!is_tess_inner
) {
1284 LLVMBuildStore(ctx
->ac
.builder
, value
, /* outer */
1285 ctx
->invoc0_tess_factors
[chan_index
]);
1286 } else if (chan_index
< 2) {
1287 LLVMBuildStore(ctx
->ac
.builder
, value
, /* inner */
1288 ctx
->invoc0_tess_factors
[4 + chan_index
]);
1293 if (reg
->Register
.WriteMask
== 0xF && !is_tess_factor
) {
1294 LLVMValueRef value
= lp_build_gather_values(&ctx
->gallivm
,
1296 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, value
, 4, buf_addr
,
1297 base
, 0, 1, 0, true, false);
1301 static LLVMValueRef
fetch_input_gs(
1302 struct lp_build_tgsi_context
*bld_base
,
1303 const struct tgsi_full_src_register
*reg
,
1304 enum tgsi_opcode_type type
,
1307 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1308 struct si_shader
*shader
= ctx
->shader
;
1309 struct lp_build_context
*uint
= &ctx
->bld_base
.uint_bld
;
1310 LLVMValueRef vtx_offset
, soffset
;
1311 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
1312 unsigned semantic_name
= info
->input_semantic_name
[reg
->Register
.Index
];
1313 unsigned semantic_index
= info
->input_semantic_index
[reg
->Register
.Index
];
1317 if (swizzle
!= ~0 && semantic_name
== TGSI_SEMANTIC_PRIMID
)
1318 return get_primitive_id(ctx
, swizzle
);
1320 if (!reg
->Register
.Dimension
)
1323 param
= si_shader_io_get_unique_index(semantic_name
, semantic_index
);
1325 /* GFX9 has the ESGS ring in LDS. */
1326 if (ctx
->screen
->b
.chip_class
>= GFX9
) {
1327 unsigned index
= reg
->Dimension
.Index
;
1329 switch (index
/ 2) {
1331 vtx_offset
= unpack_param(ctx
, ctx
->param_gs_vtx01_offset
,
1332 index
% 2 ? 16 : 0, 16);
1335 vtx_offset
= unpack_param(ctx
, ctx
->param_gs_vtx23_offset
,
1336 index
% 2 ? 16 : 0, 16);
1339 vtx_offset
= unpack_param(ctx
, ctx
->param_gs_vtx45_offset
,
1340 index
% 2 ? 16 : 0, 16);
1347 vtx_offset
= LLVMBuildAdd(ctx
->ac
.builder
, vtx_offset
,
1348 LLVMConstInt(ctx
->i32
, param
* 4, 0), "");
1349 return lds_load(bld_base
, type
, swizzle
, vtx_offset
);
1352 /* GFX6: input load from the ESGS ring in memory. */
1353 if (swizzle
== ~0) {
1354 LLVMValueRef values
[TGSI_NUM_CHANNELS
];
1356 for (chan
= 0; chan
< TGSI_NUM_CHANNELS
; chan
++) {
1357 values
[chan
] = fetch_input_gs(bld_base
, reg
, type
, chan
);
1359 return lp_build_gather_values(&ctx
->gallivm
, values
,
1363 /* Get the vertex offset parameter on GFX6. */
1364 unsigned vtx_offset_param
= reg
->Dimension
.Index
;
1365 LLVMValueRef gs_vtx_offset
= ctx
->gs_vtx_offset
[vtx_offset_param
];
1367 vtx_offset
= lp_build_mul_imm(uint
, gs_vtx_offset
, 4);
1369 soffset
= LLVMConstInt(ctx
->i32
, (param
* 4 + swizzle
) * 256, 0);
1371 value
= ac_build_buffer_load(&ctx
->ac
, ctx
->esgs_ring
, 1, ctx
->i32_0
,
1372 vtx_offset
, soffset
, 0, 1, 0, true, false);
1373 if (tgsi_type_is_64bit(type
)) {
1374 LLVMValueRef value2
;
1375 soffset
= LLVMConstInt(ctx
->i32
, (param
* 4 + swizzle
+ 1) * 256, 0);
1377 value2
= ac_build_buffer_load(&ctx
->ac
, ctx
->esgs_ring
, 1,
1378 ctx
->i32_0
, vtx_offset
, soffset
,
1379 0, 1, 0, true, false);
1380 return si_llvm_emit_fetch_64bit(bld_base
, type
,
1383 return bitcast(bld_base
, type
, value
);
1386 static int lookup_interp_param_index(unsigned interpolate
, unsigned location
)
1388 switch (interpolate
) {
1389 case TGSI_INTERPOLATE_CONSTANT
:
1392 case TGSI_INTERPOLATE_LINEAR
:
1393 if (location
== TGSI_INTERPOLATE_LOC_SAMPLE
)
1394 return SI_PARAM_LINEAR_SAMPLE
;
1395 else if (location
== TGSI_INTERPOLATE_LOC_CENTROID
)
1396 return SI_PARAM_LINEAR_CENTROID
;
1398 return SI_PARAM_LINEAR_CENTER
;
1400 case TGSI_INTERPOLATE_COLOR
:
1401 case TGSI_INTERPOLATE_PERSPECTIVE
:
1402 if (location
== TGSI_INTERPOLATE_LOC_SAMPLE
)
1403 return SI_PARAM_PERSP_SAMPLE
;
1404 else if (location
== TGSI_INTERPOLATE_LOC_CENTROID
)
1405 return SI_PARAM_PERSP_CENTROID
;
1407 return SI_PARAM_PERSP_CENTER
;
1410 fprintf(stderr
, "Warning: Unhandled interpolation mode.\n");
1415 static LLVMValueRef
si_build_fs_interp(struct si_shader_context
*ctx
,
1416 unsigned attr_index
, unsigned chan
,
1417 LLVMValueRef prim_mask
,
1418 LLVMValueRef i
, LLVMValueRef j
)
1421 return ac_build_fs_interp(&ctx
->ac
,
1422 LLVMConstInt(ctx
->i32
, chan
, 0),
1423 LLVMConstInt(ctx
->i32
, attr_index
, 0),
1426 return ac_build_fs_interp_mov(&ctx
->ac
,
1427 LLVMConstInt(ctx
->i32
, 2, 0), /* P0 */
1428 LLVMConstInt(ctx
->i32
, chan
, 0),
1429 LLVMConstInt(ctx
->i32
, attr_index
, 0),
1434 * Interpolate a fragment shader input.
1436 * @param ctx context
1437 * @param input_index index of the input in hardware
1438 * @param semantic_name TGSI_SEMANTIC_*
1439 * @param semantic_index semantic index
1440 * @param num_interp_inputs number of all interpolated inputs (= BCOLOR offset)
1441 * @param colors_read_mask color components read (4 bits for each color, 8 bits in total)
1442 * @param interp_param interpolation weights (i,j)
1443 * @param prim_mask SI_PARAM_PRIM_MASK
1444 * @param face SI_PARAM_FRONT_FACE
1445 * @param result the return value (4 components)
1447 static void interp_fs_input(struct si_shader_context
*ctx
,
1448 unsigned input_index
,
1449 unsigned semantic_name
,
1450 unsigned semantic_index
,
1451 unsigned num_interp_inputs
,
1452 unsigned colors_read_mask
,
1453 LLVMValueRef interp_param
,
1454 LLVMValueRef prim_mask
,
1456 LLVMValueRef result
[4])
1458 LLVMValueRef i
= NULL
, j
= NULL
;
1461 /* fs.constant returns the param from the middle vertex, so it's not
1462 * really useful for flat shading. It's meant to be used for custom
1463 * interpolation (but the intrinsic can't fetch from the other two
1466 * Luckily, it doesn't matter, because we rely on the FLAT_SHADE state
1467 * to do the right thing. The only reason we use fs.constant is that
1468 * fs.interp cannot be used on integers, because they can be equal
1471 * When interp is false we will use fs.constant or for newer llvm,
1472 * amdgcn.interp.mov.
1474 bool interp
= interp_param
!= NULL
;
1477 interp_param
= LLVMBuildBitCast(ctx
->ac
.builder
, interp_param
,
1478 LLVMVectorType(ctx
->f32
, 2), "");
1480 i
= LLVMBuildExtractElement(ctx
->ac
.builder
, interp_param
,
1482 j
= LLVMBuildExtractElement(ctx
->ac
.builder
, interp_param
,
1486 if (semantic_name
== TGSI_SEMANTIC_COLOR
&&
1487 ctx
->shader
->key
.part
.ps
.prolog
.color_two_side
) {
1488 LLVMValueRef is_face_positive
;
1490 /* If BCOLOR0 is used, BCOLOR1 is at offset "num_inputs + 1",
1491 * otherwise it's at offset "num_inputs".
1493 unsigned back_attr_offset
= num_interp_inputs
;
1494 if (semantic_index
== 1 && colors_read_mask
& 0xf)
1495 back_attr_offset
+= 1;
1497 is_face_positive
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntNE
,
1498 face
, ctx
->i32_0
, "");
1500 for (chan
= 0; chan
< TGSI_NUM_CHANNELS
; chan
++) {
1501 LLVMValueRef front
, back
;
1503 front
= si_build_fs_interp(ctx
,
1506 back
= si_build_fs_interp(ctx
,
1507 back_attr_offset
, chan
,
1510 result
[chan
] = LLVMBuildSelect(ctx
->ac
.builder
,
1516 } else if (semantic_name
== TGSI_SEMANTIC_FOG
) {
1517 result
[0] = si_build_fs_interp(ctx
, input_index
,
1518 0, prim_mask
, i
, j
);
1520 result
[2] = LLVMConstReal(ctx
->f32
, 0.0f
);
1521 result
[3] = LLVMConstReal(ctx
->f32
, 1.0f
);
1523 for (chan
= 0; chan
< TGSI_NUM_CHANNELS
; chan
++) {
1524 result
[chan
] = si_build_fs_interp(ctx
,
1531 void si_llvm_load_input_fs(
1532 struct si_shader_context
*ctx
,
1533 unsigned input_index
,
1534 LLVMValueRef out
[4])
1536 struct lp_build_context
*base
= &ctx
->bld_base
.base
;
1537 struct si_shader
*shader
= ctx
->shader
;
1538 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
1539 LLVMValueRef main_fn
= ctx
->main_fn
;
1540 LLVMValueRef interp_param
= NULL
;
1541 int interp_param_idx
;
1542 enum tgsi_semantic semantic_name
= info
->input_semantic_name
[input_index
];
1543 unsigned semantic_index
= info
->input_semantic_index
[input_index
];
1544 enum tgsi_interpolate_mode interp_mode
= info
->input_interpolate
[input_index
];
1545 enum tgsi_interpolate_loc interp_loc
= info
->input_interpolate_loc
[input_index
];
1547 /* Get colors from input VGPRs (set by the prolog). */
1548 if (semantic_name
== TGSI_SEMANTIC_COLOR
) {
1549 unsigned colors_read
= shader
->selector
->info
.colors_read
;
1550 unsigned mask
= colors_read
>> (semantic_index
* 4);
1551 unsigned offset
= SI_PARAM_POS_FIXED_PT
+ 1 +
1552 (semantic_index
? util_bitcount(colors_read
& 0xf) : 0);
1554 out
[0] = mask
& 0x1 ? LLVMGetParam(main_fn
, offset
++) : base
->undef
;
1555 out
[1] = mask
& 0x2 ? LLVMGetParam(main_fn
, offset
++) : base
->undef
;
1556 out
[2] = mask
& 0x4 ? LLVMGetParam(main_fn
, offset
++) : base
->undef
;
1557 out
[3] = mask
& 0x8 ? LLVMGetParam(main_fn
, offset
++) : base
->undef
;
1561 interp_param_idx
= lookup_interp_param_index(interp_mode
, interp_loc
);
1562 if (interp_param_idx
== -1)
1564 else if (interp_param_idx
) {
1565 interp_param
= LLVMGetParam(ctx
->main_fn
, interp_param_idx
);
1568 interp_fs_input(ctx
, input_index
, semantic_name
,
1569 semantic_index
, 0, /* this param is unused */
1570 shader
->selector
->info
.colors_read
, interp_param
,
1571 LLVMGetParam(main_fn
, SI_PARAM_PRIM_MASK
),
1572 LLVMGetParam(main_fn
, SI_PARAM_FRONT_FACE
),
1576 static void declare_input_fs(
1577 struct si_shader_context
*ctx
,
1578 unsigned input_index
,
1579 const struct tgsi_full_declaration
*decl
,
1580 LLVMValueRef out
[4])
1582 si_llvm_load_input_fs(ctx
, input_index
, out
);
1585 static LLVMValueRef
get_sample_id(struct si_shader_context
*ctx
)
1587 return unpack_param(ctx
, SI_PARAM_ANCILLARY
, 8, 4);
1592 * Load a dword from a constant buffer.
1594 static LLVMValueRef
buffer_load_const(struct si_shader_context
*ctx
,
1595 LLVMValueRef resource
,
1596 LLVMValueRef offset
)
1598 return ac_build_buffer_load(&ctx
->ac
, resource
, 1, NULL
, offset
, NULL
,
1599 0, 0, 0, true, true);
1602 static LLVMValueRef
load_sample_position(struct si_shader_context
*ctx
, LLVMValueRef sample_id
)
1604 struct lp_build_context
*uint_bld
= &ctx
->bld_base
.uint_bld
;
1605 LLVMValueRef desc
= LLVMGetParam(ctx
->main_fn
, ctx
->param_rw_buffers
);
1606 LLVMValueRef buf_index
= LLVMConstInt(ctx
->i32
, SI_PS_CONST_SAMPLE_POSITIONS
, 0);
1607 LLVMValueRef resource
= ac_build_load_to_sgpr(&ctx
->ac
, desc
, buf_index
);
1609 /* offset = sample_id * 8 (8 = 2 floats containing samplepos.xy) */
1610 LLVMValueRef offset0
= lp_build_mul_imm(uint_bld
, sample_id
, 8);
1611 LLVMValueRef offset1
= LLVMBuildAdd(ctx
->ac
.builder
, offset0
, LLVMConstInt(ctx
->i32
, 4, 0), "");
1613 LLVMValueRef pos
[4] = {
1614 buffer_load_const(ctx
, resource
, offset0
),
1615 buffer_load_const(ctx
, resource
, offset1
),
1616 LLVMConstReal(ctx
->f32
, 0),
1617 LLVMConstReal(ctx
->f32
, 0)
1620 return lp_build_gather_values(&ctx
->gallivm
, pos
, 4);
1623 void si_load_system_value(struct si_shader_context
*ctx
,
1625 const struct tgsi_full_declaration
*decl
)
1627 struct lp_build_context
*bld
= &ctx
->bld_base
.base
;
1628 LLVMValueRef value
= 0;
1630 assert(index
< RADEON_LLVM_MAX_SYSTEM_VALUES
);
1632 switch (decl
->Semantic
.Name
) {
1633 case TGSI_SEMANTIC_INSTANCEID
:
1634 value
= ctx
->abi
.instance_id
;
1637 case TGSI_SEMANTIC_VERTEXID
:
1638 value
= LLVMBuildAdd(ctx
->ac
.builder
,
1640 ctx
->abi
.base_vertex
, "");
1643 case TGSI_SEMANTIC_VERTEXID_NOBASE
:
1644 /* Unused. Clarify the meaning in indexed vs. non-indexed
1645 * draws if this is ever used again. */
1649 case TGSI_SEMANTIC_BASEVERTEX
:
1651 /* For non-indexed draws, the base vertex set by the driver
1652 * (for direct draws) or the CP (for indirect draws) is the
1653 * first vertex ID, but GLSL expects 0 to be returned.
1655 LLVMValueRef vs_state
= LLVMGetParam(ctx
->main_fn
, ctx
->param_vs_state_bits
);
1656 LLVMValueRef indexed
;
1658 indexed
= LLVMBuildLShr(ctx
->ac
.builder
, vs_state
, ctx
->i32_1
, "");
1659 indexed
= LLVMBuildTrunc(ctx
->ac
.builder
, indexed
, ctx
->i1
, "");
1661 value
= LLVMBuildSelect(ctx
->ac
.builder
, indexed
,
1662 ctx
->abi
.base_vertex
, ctx
->i32_0
, "");
1666 case TGSI_SEMANTIC_BASEINSTANCE
:
1667 value
= ctx
->abi
.start_instance
;
1670 case TGSI_SEMANTIC_DRAWID
:
1671 value
= ctx
->abi
.draw_id
;
1674 case TGSI_SEMANTIC_INVOCATIONID
:
1675 if (ctx
->type
== PIPE_SHADER_TESS_CTRL
)
1676 value
= unpack_param(ctx
, ctx
->param_tcs_rel_ids
, 8, 5);
1677 else if (ctx
->type
== PIPE_SHADER_GEOMETRY
)
1678 value
= ctx
->abi
.gs_invocation_id
;
1680 assert(!"INVOCATIONID not implemented");
1683 case TGSI_SEMANTIC_POSITION
:
1685 LLVMValueRef pos
[4] = {
1686 LLVMGetParam(ctx
->main_fn
, SI_PARAM_POS_X_FLOAT
),
1687 LLVMGetParam(ctx
->main_fn
, SI_PARAM_POS_Y_FLOAT
),
1688 LLVMGetParam(ctx
->main_fn
, SI_PARAM_POS_Z_FLOAT
),
1689 lp_build_emit_llvm_unary(&ctx
->bld_base
, TGSI_OPCODE_RCP
,
1690 LLVMGetParam(ctx
->main_fn
,
1691 SI_PARAM_POS_W_FLOAT
)),
1693 value
= lp_build_gather_values(&ctx
->gallivm
, pos
, 4);
1697 case TGSI_SEMANTIC_FACE
:
1698 value
= ctx
->abi
.front_face
;
1701 case TGSI_SEMANTIC_SAMPLEID
:
1702 value
= get_sample_id(ctx
);
1705 case TGSI_SEMANTIC_SAMPLEPOS
: {
1706 LLVMValueRef pos
[4] = {
1707 LLVMGetParam(ctx
->main_fn
, SI_PARAM_POS_X_FLOAT
),
1708 LLVMGetParam(ctx
->main_fn
, SI_PARAM_POS_Y_FLOAT
),
1709 LLVMConstReal(ctx
->f32
, 0),
1710 LLVMConstReal(ctx
->f32
, 0)
1712 pos
[0] = lp_build_emit_llvm_unary(&ctx
->bld_base
,
1713 TGSI_OPCODE_FRC
, pos
[0]);
1714 pos
[1] = lp_build_emit_llvm_unary(&ctx
->bld_base
,
1715 TGSI_OPCODE_FRC
, pos
[1]);
1716 value
= lp_build_gather_values(&ctx
->gallivm
, pos
, 4);
1720 case TGSI_SEMANTIC_SAMPLEMASK
:
1721 /* This can only occur with the OpenGL Core profile, which
1722 * doesn't support smoothing.
1724 value
= LLVMGetParam(ctx
->main_fn
, SI_PARAM_SAMPLE_COVERAGE
);
1727 case TGSI_SEMANTIC_TESSCOORD
:
1729 LLVMValueRef coord
[4] = {
1730 LLVMGetParam(ctx
->main_fn
, ctx
->param_tes_u
),
1731 LLVMGetParam(ctx
->main_fn
, ctx
->param_tes_v
),
1736 /* For triangles, the vector should be (u, v, 1-u-v). */
1737 if (ctx
->shader
->selector
->info
.properties
[TGSI_PROPERTY_TES_PRIM_MODE
] ==
1738 PIPE_PRIM_TRIANGLES
)
1739 coord
[2] = lp_build_sub(bld
, ctx
->ac
.f32_1
,
1740 lp_build_add(bld
, coord
[0], coord
[1]));
1742 value
= lp_build_gather_values(&ctx
->gallivm
, coord
, 4);
1746 case TGSI_SEMANTIC_VERTICESIN
:
1747 if (ctx
->type
== PIPE_SHADER_TESS_CTRL
)
1748 value
= unpack_param(ctx
, ctx
->param_tcs_out_lds_layout
, 26, 6);
1749 else if (ctx
->type
== PIPE_SHADER_TESS_EVAL
)
1750 value
= get_num_tcs_out_vertices(ctx
);
1752 assert(!"invalid shader stage for TGSI_SEMANTIC_VERTICESIN");
1755 case TGSI_SEMANTIC_TESSINNER
:
1756 case TGSI_SEMANTIC_TESSOUTER
:
1758 LLVMValueRef buffer
, base
, addr
;
1759 int param
= si_shader_io_get_unique_index_patch(decl
->Semantic
.Name
, 0);
1761 buffer
= desc_from_addr_base64k(ctx
, ctx
->param_tcs_offchip_addr_base64k
);
1763 base
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
1764 addr
= get_tcs_tes_buffer_address(ctx
, get_rel_patch_id(ctx
), NULL
,
1765 LLVMConstInt(ctx
->i32
, param
, 0));
1767 value
= buffer_load(&ctx
->bld_base
, TGSI_TYPE_FLOAT
,
1768 ~0, buffer
, base
, addr
, true);
1773 case TGSI_SEMANTIC_DEFAULT_TESSOUTER_SI
:
1774 case TGSI_SEMANTIC_DEFAULT_TESSINNER_SI
:
1776 LLVMValueRef buf
, slot
, val
[4];
1779 slot
= LLVMConstInt(ctx
->i32
, SI_HS_CONST_DEFAULT_TESS_LEVELS
, 0);
1780 buf
= LLVMGetParam(ctx
->main_fn
, ctx
->param_rw_buffers
);
1781 buf
= ac_build_load_to_sgpr(&ctx
->ac
, buf
, slot
);
1782 offset
= decl
->Semantic
.Name
== TGSI_SEMANTIC_DEFAULT_TESSINNER_SI
? 4 : 0;
1784 for (i
= 0; i
< 4; i
++)
1785 val
[i
] = buffer_load_const(ctx
, buf
,
1786 LLVMConstInt(ctx
->i32
, (offset
+ i
) * 4, 0));
1787 value
= lp_build_gather_values(&ctx
->gallivm
, val
, 4);
1791 case TGSI_SEMANTIC_PRIMID
:
1792 value
= get_primitive_id(ctx
, 0);
1795 case TGSI_SEMANTIC_GRID_SIZE
:
1796 value
= LLVMGetParam(ctx
->main_fn
, ctx
->param_grid_size
);
1799 case TGSI_SEMANTIC_BLOCK_SIZE
:
1801 LLVMValueRef values
[3];
1803 unsigned *properties
= ctx
->shader
->selector
->info
.properties
;
1805 if (properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH
] != 0) {
1806 unsigned sizes
[3] = {
1807 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH
],
1808 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT
],
1809 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_DEPTH
]
1812 for (i
= 0; i
< 3; ++i
)
1813 values
[i
] = LLVMConstInt(ctx
->i32
, sizes
[i
], 0);
1815 value
= lp_build_gather_values(&ctx
->gallivm
, values
, 3);
1817 value
= LLVMGetParam(ctx
->main_fn
, ctx
->param_block_size
);
1822 case TGSI_SEMANTIC_BLOCK_ID
:
1824 LLVMValueRef values
[3];
1826 for (int i
= 0; i
< 3; i
++) {
1827 values
[i
] = ctx
->i32_0
;
1828 if (ctx
->param_block_id
[i
] >= 0) {
1829 values
[i
] = LLVMGetParam(ctx
->main_fn
,
1830 ctx
->param_block_id
[i
]);
1833 value
= lp_build_gather_values(&ctx
->gallivm
, values
, 3);
1837 case TGSI_SEMANTIC_THREAD_ID
:
1838 value
= LLVMGetParam(ctx
->main_fn
, ctx
->param_thread_id
);
1841 case TGSI_SEMANTIC_HELPER_INVOCATION
:
1842 value
= lp_build_intrinsic(ctx
->ac
.builder
,
1843 "llvm.amdgcn.ps.live",
1845 LP_FUNC_ATTR_READNONE
);
1846 value
= LLVMBuildNot(ctx
->ac
.builder
, value
, "");
1847 value
= LLVMBuildSExt(ctx
->ac
.builder
, value
, ctx
->i32
, "");
1850 case TGSI_SEMANTIC_SUBGROUP_SIZE
:
1851 value
= LLVMConstInt(ctx
->i32
, 64, 0);
1854 case TGSI_SEMANTIC_SUBGROUP_INVOCATION
:
1855 value
= ac_get_thread_id(&ctx
->ac
);
1858 case TGSI_SEMANTIC_SUBGROUP_EQ_MASK
:
1860 LLVMValueRef id
= ac_get_thread_id(&ctx
->ac
);
1861 id
= LLVMBuildZExt(ctx
->ac
.builder
, id
, ctx
->i64
, "");
1862 value
= LLVMBuildShl(ctx
->ac
.builder
, LLVMConstInt(ctx
->i64
, 1, 0), id
, "");
1863 value
= LLVMBuildBitCast(ctx
->ac
.builder
, value
, ctx
->v2i32
, "");
1867 case TGSI_SEMANTIC_SUBGROUP_GE_MASK
:
1868 case TGSI_SEMANTIC_SUBGROUP_GT_MASK
:
1869 case TGSI_SEMANTIC_SUBGROUP_LE_MASK
:
1870 case TGSI_SEMANTIC_SUBGROUP_LT_MASK
:
1872 LLVMValueRef id
= ac_get_thread_id(&ctx
->ac
);
1873 if (decl
->Semantic
.Name
== TGSI_SEMANTIC_SUBGROUP_GT_MASK
||
1874 decl
->Semantic
.Name
== TGSI_SEMANTIC_SUBGROUP_LE_MASK
) {
1875 /* All bits set except LSB */
1876 value
= LLVMConstInt(ctx
->i64
, -2, 0);
1879 value
= LLVMConstInt(ctx
->i64
, -1, 0);
1881 id
= LLVMBuildZExt(ctx
->ac
.builder
, id
, ctx
->i64
, "");
1882 value
= LLVMBuildShl(ctx
->ac
.builder
, value
, id
, "");
1883 if (decl
->Semantic
.Name
== TGSI_SEMANTIC_SUBGROUP_LE_MASK
||
1884 decl
->Semantic
.Name
== TGSI_SEMANTIC_SUBGROUP_LT_MASK
)
1885 value
= LLVMBuildNot(ctx
->ac
.builder
, value
, "");
1886 value
= LLVMBuildBitCast(ctx
->ac
.builder
, value
, ctx
->v2i32
, "");
1891 assert(!"unknown system value");
1895 ctx
->system_values
[index
] = value
;
1898 void si_declare_compute_memory(struct si_shader_context
*ctx
,
1899 const struct tgsi_full_declaration
*decl
)
1901 struct si_shader_selector
*sel
= ctx
->shader
->selector
;
1903 LLVMTypeRef i8p
= LLVMPointerType(ctx
->i8
, LOCAL_ADDR_SPACE
);
1906 assert(decl
->Declaration
.MemType
== TGSI_MEMORY_TYPE_SHARED
);
1907 assert(decl
->Range
.First
== decl
->Range
.Last
);
1908 assert(!ctx
->ac
.lds
);
1910 var
= LLVMAddGlobalInAddressSpace(ctx
->ac
.module
,
1911 LLVMArrayType(ctx
->i8
, sel
->local_size
),
1914 LLVMSetAlignment(var
, 4);
1916 ctx
->ac
.lds
= LLVMBuildBitCast(ctx
->ac
.builder
, var
, i8p
, "");
1919 static LLVMValueRef
load_const_buffer_desc(struct si_shader_context
*ctx
, int i
)
1921 LLVMValueRef list_ptr
= LLVMGetParam(ctx
->main_fn
,
1922 ctx
->param_const_and_shader_buffers
);
1924 return ac_build_load_to_sgpr(&ctx
->ac
, list_ptr
,
1925 LLVMConstInt(ctx
->i32
, si_get_constbuf_slot(i
), 0));
1928 static LLVMValueRef
load_ubo(struct ac_shader_abi
*abi
, LLVMValueRef index
)
1930 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1931 LLVMValueRef ptr
= LLVMGetParam(ctx
->main_fn
, ctx
->param_const_and_shader_buffers
);
1933 index
= si_llvm_bound_index(ctx
, index
, ctx
->num_const_buffers
);
1934 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
,
1935 LLVMConstInt(ctx
->i32
, SI_NUM_SHADER_BUFFERS
, 0), "");
1937 return ac_build_load_to_sgpr(&ctx
->ac
, ptr
, index
);
1941 load_ssbo(struct ac_shader_abi
*abi
, LLVMValueRef index
, bool write
)
1943 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
1944 LLVMValueRef rsrc_ptr
= LLVMGetParam(ctx
->main_fn
,
1945 ctx
->param_const_and_shader_buffers
);
1947 index
= si_llvm_bound_index(ctx
, index
, ctx
->num_shader_buffers
);
1948 index
= LLVMBuildSub(ctx
->ac
.builder
,
1949 LLVMConstInt(ctx
->i32
, SI_NUM_SHADER_BUFFERS
- 1, 0),
1952 return ac_build_load_to_sgpr(&ctx
->ac
, rsrc_ptr
, index
);
1955 static LLVMValueRef
fetch_constant(
1956 struct lp_build_tgsi_context
*bld_base
,
1957 const struct tgsi_full_src_register
*reg
,
1958 enum tgsi_opcode_type type
,
1961 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
1962 struct si_shader_selector
*sel
= ctx
->shader
->selector
;
1963 const struct tgsi_ind_register
*ireg
= ®
->Indirect
;
1966 LLVMValueRef addr
, bufp
;
1968 if (swizzle
== LP_CHAN_ALL
) {
1970 LLVMValueRef values
[4];
1971 for (chan
= 0; chan
< TGSI_NUM_CHANNELS
; ++chan
)
1972 values
[chan
] = fetch_constant(bld_base
, reg
, type
, chan
);
1974 return lp_build_gather_values(&ctx
->gallivm
, values
, 4);
1977 /* Split 64-bit loads. */
1978 if (tgsi_type_is_64bit(type
)) {
1979 LLVMValueRef lo
, hi
;
1981 lo
= fetch_constant(bld_base
, reg
, TGSI_TYPE_UNSIGNED
, swizzle
);
1982 hi
= fetch_constant(bld_base
, reg
, TGSI_TYPE_UNSIGNED
, swizzle
+ 1);
1983 return si_llvm_emit_fetch_64bit(bld_base
, type
, lo
, hi
);
1986 idx
= reg
->Register
.Index
* 4 + swizzle
;
1987 if (reg
->Register
.Indirect
) {
1988 addr
= si_get_indirect_index(ctx
, ireg
, 16, idx
* 4);
1990 addr
= LLVMConstInt(ctx
->i32
, idx
* 4, 0);
1993 /* Fast path when user data SGPRs point to constant buffer 0 directly. */
1994 if (sel
->info
.const_buffers_declared
== 1 &&
1995 sel
->info
.shader_buffers_declared
== 0) {
1997 LLVMGetParam(ctx
->main_fn
, ctx
->param_const_and_shader_buffers
);
1999 /* This enables use of s_load_dword and flat_load_dword for const buffer 0
2000 * loads, and up to x4 load opcode merging. However, it leads to horrible
2001 * code reducing SIMD wave occupancy from 8 to 2 in many cases.
2003 * Using s_buffer_load_dword (x1) seems to be the best option right now.
2005 * LLVM 5.0 on SI doesn't insert a required s_nop between SALU setting
2006 * a descriptor and s_buffer_load_dword using it, so we can't expand
2007 * the pointer into a full descriptor like below. We have to use
2008 * s_load_dword instead. The only case when LLVM 5.0 would select
2009 * s_buffer_load_dword (that we have to prevent) is when we use use
2010 * a literal offset where we don't need bounds checking.
2012 if (ctx
->screen
->b
.chip_class
== SI
&&
2013 HAVE_LLVM
< 0x0600 &&
2014 !reg
->Register
.Indirect
) {
2015 addr
= LLVMBuildLShr(ctx
->ac
.builder
, addr
, LLVMConstInt(ctx
->i32
, 2, 0), "");
2016 LLVMValueRef result
= ac_build_load_invariant(&ctx
->ac
, ptr
, addr
);
2017 return bitcast(bld_base
, type
, result
);
2020 /* Do the bounds checking with a descriptor, because
2021 * doing computation and manual bounds checking of 64-bit
2022 * addresses generates horrible VALU code with very high
2023 * VGPR usage and very low SIMD occupancy.
2025 ptr
= LLVMBuildPtrToInt(ctx
->ac
.builder
, ptr
, ctx
->i64
, "");
2026 ptr
= LLVMBuildBitCast(ctx
->ac
.builder
, ptr
, ctx
->v2i32
, "");
2028 LLVMValueRef desc_elems
[] = {
2029 LLVMBuildExtractElement(ctx
->ac
.builder
, ptr
, ctx
->i32_0
, ""),
2030 LLVMBuildExtractElement(ctx
->ac
.builder
, ptr
, ctx
->i32_1
, ""),
2031 LLVMConstInt(ctx
->i32
, (sel
->info
.const_file_max
[0] + 1) * 16, 0),
2032 LLVMConstInt(ctx
->i32
,
2033 S_008F0C_DST_SEL_X(V_008F0C_SQ_SEL_X
) |
2034 S_008F0C_DST_SEL_Y(V_008F0C_SQ_SEL_Y
) |
2035 S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z
) |
2036 S_008F0C_DST_SEL_W(V_008F0C_SQ_SEL_W
) |
2037 S_008F0C_NUM_FORMAT(V_008F0C_BUF_NUM_FORMAT_FLOAT
) |
2038 S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32
), 0)
2040 LLVMValueRef desc
= ac_build_gather_values(&ctx
->ac
, desc_elems
, 4);
2041 LLVMValueRef result
= buffer_load_const(ctx
, desc
, addr
);
2042 return bitcast(bld_base
, type
, result
);
2045 assert(reg
->Register
.Dimension
);
2046 buf
= reg
->Dimension
.Index
;
2048 if (reg
->Dimension
.Indirect
) {
2049 LLVMValueRef ptr
= LLVMGetParam(ctx
->main_fn
, ctx
->param_const_and_shader_buffers
);
2051 index
= si_get_bounded_indirect_index(ctx
, ®
->DimIndirect
,
2052 reg
->Dimension
.Index
,
2053 ctx
->num_const_buffers
);
2054 index
= LLVMBuildAdd(ctx
->ac
.builder
, index
,
2055 LLVMConstInt(ctx
->i32
, SI_NUM_SHADER_BUFFERS
, 0), "");
2056 bufp
= ac_build_load_to_sgpr(&ctx
->ac
, ptr
, index
);
2058 bufp
= load_const_buffer_desc(ctx
, buf
);
2060 return bitcast(bld_base
, type
, buffer_load_const(ctx
, bufp
, addr
));
2063 /* Upper 16 bits must be zero. */
2064 static LLVMValueRef
si_llvm_pack_two_int16(struct si_shader_context
*ctx
,
2065 LLVMValueRef val
[2])
2067 return LLVMBuildOr(ctx
->ac
.builder
, val
[0],
2068 LLVMBuildShl(ctx
->ac
.builder
, val
[1],
2069 LLVMConstInt(ctx
->i32
, 16, 0),
2073 /* Upper 16 bits are ignored and will be dropped. */
2074 static LLVMValueRef
si_llvm_pack_two_int32_as_int16(struct si_shader_context
*ctx
,
2075 LLVMValueRef val
[2])
2077 LLVMValueRef v
[2] = {
2078 LLVMBuildAnd(ctx
->ac
.builder
, val
[0],
2079 LLVMConstInt(ctx
->i32
, 0xffff, 0), ""),
2082 return si_llvm_pack_two_int16(ctx
, v
);
2085 /* Initialize arguments for the shader export intrinsic */
2086 static void si_llvm_init_export_args(struct lp_build_tgsi_context
*bld_base
,
2087 LLVMValueRef
*values
,
2089 struct ac_export_args
*args
)
2091 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
2092 struct lp_build_context
*base
= &bld_base
->base
;
2093 LLVMBuilderRef builder
= ctx
->ac
.builder
;
2094 LLVMValueRef val
[4];
2095 unsigned spi_shader_col_format
= V_028714_SPI_SHADER_32_ABGR
;
2097 bool is_int8
, is_int10
;
2099 /* Default is 0xf. Adjusted below depending on the format. */
2100 args
->enabled_channels
= 0xf; /* writemask */
2102 /* Specify whether the EXEC mask represents the valid mask */
2103 args
->valid_mask
= 0;
2105 /* Specify whether this is the last export */
2108 /* Specify the target we are exporting */
2109 args
->target
= target
;
2111 if (ctx
->type
== PIPE_SHADER_FRAGMENT
) {
2112 const struct si_shader_key
*key
= &ctx
->shader
->key
;
2113 unsigned col_formats
= key
->part
.ps
.epilog
.spi_shader_col_format
;
2114 int cbuf
= target
- V_008DFC_SQ_EXP_MRT
;
2116 assert(cbuf
>= 0 && cbuf
< 8);
2117 spi_shader_col_format
= (col_formats
>> (cbuf
* 4)) & 0xf;
2118 is_int8
= (key
->part
.ps
.epilog
.color_is_int8
>> cbuf
) & 0x1;
2119 is_int10
= (key
->part
.ps
.epilog
.color_is_int10
>> cbuf
) & 0x1;
2122 args
->compr
= false;
2123 args
->out
[0] = base
->undef
;
2124 args
->out
[1] = base
->undef
;
2125 args
->out
[2] = base
->undef
;
2126 args
->out
[3] = base
->undef
;
2128 switch (spi_shader_col_format
) {
2129 case V_028714_SPI_SHADER_ZERO
:
2130 args
->enabled_channels
= 0; /* writemask */
2131 args
->target
= V_008DFC_SQ_EXP_NULL
;
2134 case V_028714_SPI_SHADER_32_R
:
2135 args
->enabled_channels
= 1; /* writemask */
2136 args
->out
[0] = values
[0];
2139 case V_028714_SPI_SHADER_32_GR
:
2140 args
->enabled_channels
= 0x3; /* writemask */
2141 args
->out
[0] = values
[0];
2142 args
->out
[1] = values
[1];
2145 case V_028714_SPI_SHADER_32_AR
:
2146 args
->enabled_channels
= 0x9; /* writemask */
2147 args
->out
[0] = values
[0];
2148 args
->out
[3] = values
[3];
2151 case V_028714_SPI_SHADER_FP16_ABGR
:
2152 args
->compr
= 1; /* COMPR flag */
2154 for (chan
= 0; chan
< 2; chan
++) {
2155 LLVMValueRef pack_args
[2] = {
2157 values
[2 * chan
+ 1]
2159 LLVMValueRef packed
;
2161 packed
= ac_build_cvt_pkrtz_f16(&ctx
->ac
, pack_args
);
2162 args
->out
[chan
] = ac_to_float(&ctx
->ac
, packed
);
2166 case V_028714_SPI_SHADER_UNORM16_ABGR
:
2167 for (chan
= 0; chan
< 4; chan
++) {
2168 val
[chan
] = ac_build_clamp(&ctx
->ac
, values
[chan
]);
2169 val
[chan
] = LLVMBuildFMul(builder
, val
[chan
],
2170 LLVMConstReal(ctx
->f32
, 65535), "");
2171 val
[chan
] = LLVMBuildFAdd(builder
, val
[chan
],
2172 LLVMConstReal(ctx
->f32
, 0.5), "");
2173 val
[chan
] = LLVMBuildFPToUI(builder
, val
[chan
],
2177 args
->compr
= 1; /* COMPR flag */
2178 args
->out
[0] = ac_to_float(&ctx
->ac
, si_llvm_pack_two_int16(ctx
, val
));
2179 args
->out
[1] = ac_to_float(&ctx
->ac
, si_llvm_pack_two_int16(ctx
, val
+2));
2182 case V_028714_SPI_SHADER_SNORM16_ABGR
:
2183 for (chan
= 0; chan
< 4; chan
++) {
2184 /* Clamp between [-1, 1]. */
2185 val
[chan
] = lp_build_emit_llvm_binary(bld_base
, TGSI_OPCODE_MIN
,
2187 LLVMConstReal(ctx
->f32
, 1));
2188 val
[chan
] = lp_build_emit_llvm_binary(bld_base
, TGSI_OPCODE_MAX
,
2190 LLVMConstReal(ctx
->f32
, -1));
2191 /* Convert to a signed integer in [-32767, 32767]. */
2192 val
[chan
] = LLVMBuildFMul(builder
, val
[chan
],
2193 LLVMConstReal(ctx
->f32
, 32767), "");
2194 /* If positive, add 0.5, else add -0.5. */
2195 val
[chan
] = LLVMBuildFAdd(builder
, val
[chan
],
2196 LLVMBuildSelect(builder
,
2197 LLVMBuildFCmp(builder
, LLVMRealOGE
,
2198 val
[chan
], ctx
->ac
.f32_0
, ""),
2199 LLVMConstReal(ctx
->f32
, 0.5),
2200 LLVMConstReal(ctx
->f32
, -0.5), ""), "");
2201 val
[chan
] = LLVMBuildFPToSI(builder
, val
[chan
], ctx
->i32
, "");
2204 args
->compr
= 1; /* COMPR flag */
2205 args
->out
[0] = ac_to_float(&ctx
->ac
, si_llvm_pack_two_int32_as_int16(ctx
, val
));
2206 args
->out
[1] = ac_to_float(&ctx
->ac
, si_llvm_pack_two_int32_as_int16(ctx
, val
+2));
2209 case V_028714_SPI_SHADER_UINT16_ABGR
: {
2210 LLVMValueRef max_rgb
= LLVMConstInt(ctx
->i32
,
2211 is_int8
? 255 : is_int10
? 1023 : 65535, 0);
2212 LLVMValueRef max_alpha
=
2213 !is_int10
? max_rgb
: LLVMConstInt(ctx
->i32
, 3, 0);
2216 for (chan
= 0; chan
< 4; chan
++) {
2217 val
[chan
] = ac_to_integer(&ctx
->ac
, values
[chan
]);
2218 val
[chan
] = lp_build_emit_llvm_binary(bld_base
, TGSI_OPCODE_UMIN
,
2220 chan
== 3 ? max_alpha
: max_rgb
);
2223 args
->compr
= 1; /* COMPR flag */
2224 args
->out
[0] = ac_to_float(&ctx
->ac
, si_llvm_pack_two_int16(ctx
, val
));
2225 args
->out
[1] = ac_to_float(&ctx
->ac
, si_llvm_pack_two_int16(ctx
, val
+2));
2229 case V_028714_SPI_SHADER_SINT16_ABGR
: {
2230 LLVMValueRef max_rgb
= LLVMConstInt(ctx
->i32
,
2231 is_int8
? 127 : is_int10
? 511 : 32767, 0);
2232 LLVMValueRef min_rgb
= LLVMConstInt(ctx
->i32
,
2233 is_int8
? -128 : is_int10
? -512 : -32768, 0);
2234 LLVMValueRef max_alpha
=
2235 !is_int10
? max_rgb
: ctx
->i32_1
;
2236 LLVMValueRef min_alpha
=
2237 !is_int10
? min_rgb
: LLVMConstInt(ctx
->i32
, -2, 0);
2240 for (chan
= 0; chan
< 4; chan
++) {
2241 val
[chan
] = ac_to_integer(&ctx
->ac
, values
[chan
]);
2242 val
[chan
] = lp_build_emit_llvm_binary(bld_base
,
2244 val
[chan
], chan
== 3 ? max_alpha
: max_rgb
);
2245 val
[chan
] = lp_build_emit_llvm_binary(bld_base
,
2247 val
[chan
], chan
== 3 ? min_alpha
: min_rgb
);
2250 args
->compr
= 1; /* COMPR flag */
2251 args
->out
[0] = ac_to_float(&ctx
->ac
, si_llvm_pack_two_int32_as_int16(ctx
, val
));
2252 args
->out
[1] = ac_to_float(&ctx
->ac
, si_llvm_pack_two_int32_as_int16(ctx
, val
+2));
2256 case V_028714_SPI_SHADER_32_ABGR
:
2257 memcpy(&args
->out
[0], values
, sizeof(values
[0]) * 4);
2262 static void si_alpha_test(struct lp_build_tgsi_context
*bld_base
,
2265 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
2267 if (ctx
->shader
->key
.part
.ps
.epilog
.alpha_func
!= PIPE_FUNC_NEVER
) {
2268 static LLVMRealPredicate cond_map
[PIPE_FUNC_ALWAYS
+ 1] = {
2269 [PIPE_FUNC_LESS
] = LLVMRealOLT
,
2270 [PIPE_FUNC_EQUAL
] = LLVMRealOEQ
,
2271 [PIPE_FUNC_LEQUAL
] = LLVMRealOLE
,
2272 [PIPE_FUNC_GREATER
] = LLVMRealOGT
,
2273 [PIPE_FUNC_NOTEQUAL
] = LLVMRealONE
,
2274 [PIPE_FUNC_GEQUAL
] = LLVMRealOGE
,
2276 LLVMRealPredicate cond
= cond_map
[ctx
->shader
->key
.part
.ps
.epilog
.alpha_func
];
2279 LLVMValueRef alpha_ref
= LLVMGetParam(ctx
->main_fn
,
2280 SI_PARAM_ALPHA_REF
);
2281 LLVMValueRef alpha_pass
=
2282 LLVMBuildFCmp(ctx
->ac
.builder
, cond
, alpha
, alpha_ref
, "");
2283 ac_build_kill_if_false(&ctx
->ac
, alpha_pass
);
2285 ac_build_kill_if_false(&ctx
->ac
, LLVMConstInt(ctx
->i1
, 0, 0));
2289 static LLVMValueRef
si_scale_alpha_by_sample_mask(struct lp_build_tgsi_context
*bld_base
,
2291 unsigned samplemask_param
)
2293 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
2294 LLVMValueRef coverage
;
2296 /* alpha = alpha * popcount(coverage) / SI_NUM_SMOOTH_AA_SAMPLES */
2297 coverage
= LLVMGetParam(ctx
->main_fn
,
2299 coverage
= ac_to_integer(&ctx
->ac
, coverage
);
2301 coverage
= lp_build_intrinsic(ctx
->ac
.builder
, "llvm.ctpop.i32",
2303 &coverage
, 1, LP_FUNC_ATTR_READNONE
);
2305 coverage
= LLVMBuildUIToFP(ctx
->ac
.builder
, coverage
,
2308 coverage
= LLVMBuildFMul(ctx
->ac
.builder
, coverage
,
2309 LLVMConstReal(ctx
->f32
,
2310 1.0 / SI_NUM_SMOOTH_AA_SAMPLES
), "");
2312 return LLVMBuildFMul(ctx
->ac
.builder
, alpha
, coverage
, "");
2315 static void si_llvm_emit_clipvertex(struct lp_build_tgsi_context
*bld_base
,
2316 struct ac_export_args
*pos
, LLVMValueRef
*out_elts
)
2318 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
2319 struct lp_build_context
*base
= &bld_base
->base
;
2322 unsigned const_chan
;
2323 LLVMValueRef base_elt
;
2324 LLVMValueRef ptr
= LLVMGetParam(ctx
->main_fn
, ctx
->param_rw_buffers
);
2325 LLVMValueRef constbuf_index
= LLVMConstInt(ctx
->i32
,
2326 SI_VS_CONST_CLIP_PLANES
, 0);
2327 LLVMValueRef const_resource
= ac_build_load_to_sgpr(&ctx
->ac
, ptr
, constbuf_index
);
2329 for (reg_index
= 0; reg_index
< 2; reg_index
++) {
2330 struct ac_export_args
*args
= &pos
[2 + reg_index
];
2335 args
->out
[3] = LLVMConstReal(ctx
->f32
, 0.0f
);
2337 /* Compute dot products of position and user clip plane vectors */
2338 for (chan
= 0; chan
< TGSI_NUM_CHANNELS
; chan
++) {
2339 for (const_chan
= 0; const_chan
< TGSI_NUM_CHANNELS
; const_chan
++) {
2341 LLVMConstInt(ctx
->i32
, ((reg_index
* 4 + chan
) * 4 +
2342 const_chan
) * 4, 0);
2343 base_elt
= buffer_load_const(ctx
, const_resource
,
2346 lp_build_add(base
, args
->out
[chan
],
2347 lp_build_mul(base
, base_elt
,
2348 out_elts
[const_chan
]));
2352 args
->enabled_channels
= 0xf;
2353 args
->valid_mask
= 0;
2355 args
->target
= V_008DFC_SQ_EXP_POS
+ 2 + reg_index
;
2360 static void si_dump_streamout(struct pipe_stream_output_info
*so
)
2364 if (so
->num_outputs
)
2365 fprintf(stderr
, "STREAMOUT\n");
2367 for (i
= 0; i
< so
->num_outputs
; i
++) {
2368 unsigned mask
= ((1 << so
->output
[i
].num_components
) - 1) <<
2369 so
->output
[i
].start_component
;
2370 fprintf(stderr
, " %i: BUF%i[%i..%i] <- OUT[%i].%s%s%s%s\n",
2371 i
, so
->output
[i
].output_buffer
,
2372 so
->output
[i
].dst_offset
, so
->output
[i
].dst_offset
+ so
->output
[i
].num_components
- 1,
2373 so
->output
[i
].register_index
,
2374 mask
& 1 ? "x" : "",
2375 mask
& 2 ? "y" : "",
2376 mask
& 4 ? "z" : "",
2377 mask
& 8 ? "w" : "");
2381 static void emit_streamout_output(struct si_shader_context
*ctx
,
2382 LLVMValueRef
const *so_buffers
,
2383 LLVMValueRef
const *so_write_offsets
,
2384 struct pipe_stream_output
*stream_out
,
2385 struct si_shader_output_values
*shader_out
)
2387 unsigned buf_idx
= stream_out
->output_buffer
;
2388 unsigned start
= stream_out
->start_component
;
2389 unsigned num_comps
= stream_out
->num_components
;
2390 LLVMValueRef out
[4];
2392 assert(num_comps
&& num_comps
<= 4);
2393 if (!num_comps
|| num_comps
> 4)
2396 /* Load the output as int. */
2397 for (int j
= 0; j
< num_comps
; j
++) {
2398 assert(stream_out
->stream
== shader_out
->vertex_stream
[start
+ j
]);
2400 out
[j
] = ac_to_integer(&ctx
->ac
, shader_out
->values
[start
+ j
]);
2403 /* Pack the output. */
2404 LLVMValueRef vdata
= NULL
;
2406 switch (num_comps
) {
2407 case 1: /* as i32 */
2410 case 2: /* as v2i32 */
2411 case 3: /* as v4i32 (aligned to 4) */
2412 case 4: /* as v4i32 */
2413 vdata
= LLVMGetUndef(LLVMVectorType(ctx
->i32
, util_next_power_of_two(num_comps
)));
2414 for (int j
= 0; j
< num_comps
; j
++) {
2415 vdata
= LLVMBuildInsertElement(ctx
->ac
.builder
, vdata
, out
[j
],
2416 LLVMConstInt(ctx
->i32
, j
, 0), "");
2421 ac_build_buffer_store_dword(&ctx
->ac
, so_buffers
[buf_idx
],
2423 so_write_offsets
[buf_idx
],
2425 stream_out
->dst_offset
* 4, 1, 1, true, false);
2429 * Write streamout data to buffers for vertex stream @p stream (different
2430 * vertex streams can occur for GS copy shaders).
2432 static void si_llvm_emit_streamout(struct si_shader_context
*ctx
,
2433 struct si_shader_output_values
*outputs
,
2434 unsigned noutput
, unsigned stream
)
2436 struct si_shader_selector
*sel
= ctx
->shader
->selector
;
2437 struct pipe_stream_output_info
*so
= &sel
->so
;
2438 LLVMBuilderRef builder
= ctx
->ac
.builder
;
2440 struct lp_build_if_state if_ctx
;
2442 /* Get bits [22:16], i.e. (so_param >> 16) & 127; */
2443 LLVMValueRef so_vtx_count
=
2444 unpack_param(ctx
, ctx
->param_streamout_config
, 16, 7);
2446 LLVMValueRef tid
= ac_get_thread_id(&ctx
->ac
);
2448 /* can_emit = tid < so_vtx_count; */
2449 LLVMValueRef can_emit
=
2450 LLVMBuildICmp(builder
, LLVMIntULT
, tid
, so_vtx_count
, "");
2452 /* Emit the streamout code conditionally. This actually avoids
2453 * out-of-bounds buffer access. The hw tells us via the SGPR
2454 * (so_vtx_count) which threads are allowed to emit streamout data. */
2455 lp_build_if(&if_ctx
, &ctx
->gallivm
, can_emit
);
2457 /* The buffer offset is computed as follows:
2458 * ByteOffset = streamout_offset[buffer_id]*4 +
2459 * (streamout_write_index + thread_id)*stride[buffer_id] +
2463 LLVMValueRef so_write_index
=
2464 LLVMGetParam(ctx
->main_fn
,
2465 ctx
->param_streamout_write_index
);
2467 /* Compute (streamout_write_index + thread_id). */
2468 so_write_index
= LLVMBuildAdd(builder
, so_write_index
, tid
, "");
2470 /* Load the descriptor and compute the write offset for each
2471 * enabled buffer. */
2472 LLVMValueRef so_write_offset
[4] = {};
2473 LLVMValueRef so_buffers
[4];
2474 LLVMValueRef buf_ptr
= LLVMGetParam(ctx
->main_fn
,
2475 ctx
->param_rw_buffers
);
2477 for (i
= 0; i
< 4; i
++) {
2481 LLVMValueRef offset
= LLVMConstInt(ctx
->i32
,
2482 SI_VS_STREAMOUT_BUF0
+ i
, 0);
2484 so_buffers
[i
] = ac_build_load_to_sgpr(&ctx
->ac
, buf_ptr
, offset
);
2486 LLVMValueRef so_offset
= LLVMGetParam(ctx
->main_fn
,
2487 ctx
->param_streamout_offset
[i
]);
2488 so_offset
= LLVMBuildMul(builder
, so_offset
, LLVMConstInt(ctx
->i32
, 4, 0), "");
2490 so_write_offset
[i
] = LLVMBuildMul(builder
, so_write_index
,
2491 LLVMConstInt(ctx
->i32
, so
->stride
[i
]*4, 0), "");
2492 so_write_offset
[i
] = LLVMBuildAdd(builder
, so_write_offset
[i
], so_offset
, "");
2495 /* Write streamout data. */
2496 for (i
= 0; i
< so
->num_outputs
; i
++) {
2497 unsigned reg
= so
->output
[i
].register_index
;
2502 if (stream
!= so
->output
[i
].stream
)
2505 emit_streamout_output(ctx
, so_buffers
, so_write_offset
,
2506 &so
->output
[i
], &outputs
[reg
]);
2509 lp_build_endif(&if_ctx
);
2512 static void si_export_param(struct si_shader_context
*ctx
, unsigned index
,
2513 LLVMValueRef
*values
)
2515 struct ac_export_args args
;
2517 si_llvm_init_export_args(&ctx
->bld_base
, values
,
2518 V_008DFC_SQ_EXP_PARAM
+ index
, &args
);
2519 ac_build_export(&ctx
->ac
, &args
);
2522 static void si_build_param_exports(struct si_shader_context
*ctx
,
2523 struct si_shader_output_values
*outputs
,
2526 struct si_shader
*shader
= ctx
->shader
;
2527 unsigned param_count
= 0;
2529 for (unsigned i
= 0; i
< noutput
; i
++) {
2530 unsigned semantic_name
= outputs
[i
].semantic_name
;
2531 unsigned semantic_index
= outputs
[i
].semantic_index
;
2533 if (outputs
[i
].vertex_stream
[0] != 0 &&
2534 outputs
[i
].vertex_stream
[1] != 0 &&
2535 outputs
[i
].vertex_stream
[2] != 0 &&
2536 outputs
[i
].vertex_stream
[3] != 0)
2539 switch (semantic_name
) {
2540 case TGSI_SEMANTIC_LAYER
:
2541 case TGSI_SEMANTIC_VIEWPORT_INDEX
:
2542 case TGSI_SEMANTIC_CLIPDIST
:
2543 case TGSI_SEMANTIC_COLOR
:
2544 case TGSI_SEMANTIC_BCOLOR
:
2545 case TGSI_SEMANTIC_PRIMID
:
2546 case TGSI_SEMANTIC_FOG
:
2547 case TGSI_SEMANTIC_TEXCOORD
:
2548 case TGSI_SEMANTIC_GENERIC
:
2554 if ((semantic_name
!= TGSI_SEMANTIC_GENERIC
||
2555 semantic_index
< SI_MAX_IO_GENERIC
) &&
2556 shader
->key
.opt
.kill_outputs
&
2557 (1ull << si_shader_io_get_unique_index(semantic_name
, semantic_index
)))
2560 si_export_param(ctx
, param_count
, outputs
[i
].values
);
2562 assert(i
< ARRAY_SIZE(shader
->info
.vs_output_param_offset
));
2563 shader
->info
.vs_output_param_offset
[i
] = param_count
++;
2566 shader
->info
.nr_param_exports
= param_count
;
2569 /* Generate export instructions for hardware VS shader stage */
2570 static void si_llvm_export_vs(struct lp_build_tgsi_context
*bld_base
,
2571 struct si_shader_output_values
*outputs
,
2574 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
2575 struct si_shader
*shader
= ctx
->shader
;
2576 struct ac_export_args pos_args
[4] = {};
2577 LLVMValueRef psize_value
= NULL
, edgeflag_value
= NULL
, layer_value
= NULL
, viewport_index_value
= NULL
;
2581 /* Build position exports. */
2582 for (i
= 0; i
< noutput
; i
++) {
2583 switch (outputs
[i
].semantic_name
) {
2584 case TGSI_SEMANTIC_POSITION
:
2585 si_llvm_init_export_args(bld_base
, outputs
[i
].values
,
2586 V_008DFC_SQ_EXP_POS
, &pos_args
[0]);
2588 case TGSI_SEMANTIC_PSIZE
:
2589 psize_value
= outputs
[i
].values
[0];
2591 case TGSI_SEMANTIC_LAYER
:
2592 layer_value
= outputs
[i
].values
[0];
2594 case TGSI_SEMANTIC_VIEWPORT_INDEX
:
2595 viewport_index_value
= outputs
[i
].values
[0];
2597 case TGSI_SEMANTIC_EDGEFLAG
:
2598 edgeflag_value
= outputs
[i
].values
[0];
2600 case TGSI_SEMANTIC_CLIPDIST
:
2601 if (!shader
->key
.opt
.clip_disable
) {
2602 unsigned index
= 2 + outputs
[i
].semantic_index
;
2603 si_llvm_init_export_args(bld_base
, outputs
[i
].values
,
2604 V_008DFC_SQ_EXP_POS
+ index
,
2608 case TGSI_SEMANTIC_CLIPVERTEX
:
2609 if (!shader
->key
.opt
.clip_disable
) {
2610 si_llvm_emit_clipvertex(bld_base
, pos_args
,
2617 /* We need to add the position output manually if it's missing. */
2618 if (!pos_args
[0].out
[0]) {
2619 pos_args
[0].enabled_channels
= 0xf; /* writemask */
2620 pos_args
[0].valid_mask
= 0; /* EXEC mask */
2621 pos_args
[0].done
= 0; /* last export? */
2622 pos_args
[0].target
= V_008DFC_SQ_EXP_POS
;
2623 pos_args
[0].compr
= 0; /* COMPR flag */
2624 pos_args
[0].out
[0] = ctx
->ac
.f32_0
; /* X */
2625 pos_args
[0].out
[1] = ctx
->ac
.f32_0
; /* Y */
2626 pos_args
[0].out
[2] = ctx
->ac
.f32_0
; /* Z */
2627 pos_args
[0].out
[3] = ctx
->ac
.f32_1
; /* W */
2630 /* Write the misc vector (point size, edgeflag, layer, viewport). */
2631 if (shader
->selector
->info
.writes_psize
||
2632 shader
->selector
->info
.writes_edgeflag
||
2633 shader
->selector
->info
.writes_viewport_index
||
2634 shader
->selector
->info
.writes_layer
) {
2635 pos_args
[1].enabled_channels
= shader
->selector
->info
.writes_psize
|
2636 (shader
->selector
->info
.writes_edgeflag
<< 1) |
2637 (shader
->selector
->info
.writes_layer
<< 2);
2639 pos_args
[1].valid_mask
= 0; /* EXEC mask */
2640 pos_args
[1].done
= 0; /* last export? */
2641 pos_args
[1].target
= V_008DFC_SQ_EXP_POS
+ 1;
2642 pos_args
[1].compr
= 0; /* COMPR flag */
2643 pos_args
[1].out
[0] = ctx
->ac
.f32_0
; /* X */
2644 pos_args
[1].out
[1] = ctx
->ac
.f32_0
; /* Y */
2645 pos_args
[1].out
[2] = ctx
->ac
.f32_0
; /* Z */
2646 pos_args
[1].out
[3] = ctx
->ac
.f32_0
; /* W */
2648 if (shader
->selector
->info
.writes_psize
)
2649 pos_args
[1].out
[0] = psize_value
;
2651 if (shader
->selector
->info
.writes_edgeflag
) {
2652 /* The output is a float, but the hw expects an integer
2653 * with the first bit containing the edge flag. */
2654 edgeflag_value
= LLVMBuildFPToUI(ctx
->ac
.builder
,
2657 edgeflag_value
= ac_build_umin(&ctx
->ac
,
2661 /* The LLVM intrinsic expects a float. */
2662 pos_args
[1].out
[1] = ac_to_float(&ctx
->ac
, edgeflag_value
);
2665 if (ctx
->screen
->b
.chip_class
>= GFX9
) {
2666 /* GFX9 has the layer in out.z[10:0] and the viewport
2667 * index in out.z[19:16].
2669 if (shader
->selector
->info
.writes_layer
)
2670 pos_args
[1].out
[2] = layer_value
;
2672 if (shader
->selector
->info
.writes_viewport_index
) {
2673 LLVMValueRef v
= viewport_index_value
;
2675 v
= ac_to_integer(&ctx
->ac
, v
);
2676 v
= LLVMBuildShl(ctx
->ac
.builder
, v
,
2677 LLVMConstInt(ctx
->i32
, 16, 0), "");
2678 v
= LLVMBuildOr(ctx
->ac
.builder
, v
,
2679 ac_to_integer(&ctx
->ac
, pos_args
[1].out
[2]), "");
2680 pos_args
[1].out
[2] = ac_to_float(&ctx
->ac
, v
);
2681 pos_args
[1].enabled_channels
|= 1 << 2;
2684 if (shader
->selector
->info
.writes_layer
)
2685 pos_args
[1].out
[2] = layer_value
;
2687 if (shader
->selector
->info
.writes_viewport_index
) {
2688 pos_args
[1].out
[3] = viewport_index_value
;
2689 pos_args
[1].enabled_channels
|= 1 << 3;
2694 for (i
= 0; i
< 4; i
++)
2695 if (pos_args
[i
].out
[0])
2696 shader
->info
.nr_pos_exports
++;
2699 for (i
= 0; i
< 4; i
++) {
2700 if (!pos_args
[i
].out
[0])
2703 /* Specify the target we are exporting */
2704 pos_args
[i
].target
= V_008DFC_SQ_EXP_POS
+ pos_idx
++;
2706 if (pos_idx
== shader
->info
.nr_pos_exports
)
2707 /* Specify that this is the last export */
2708 pos_args
[i
].done
= 1;
2710 ac_build_export(&ctx
->ac
, &pos_args
[i
]);
2713 /* Build parameter exports. */
2714 si_build_param_exports(ctx
, outputs
, noutput
);
2718 * Forward all outputs from the vertex shader to the TES. This is only used
2719 * for the fixed function TCS.
2721 static void si_copy_tcs_inputs(struct lp_build_tgsi_context
*bld_base
)
2723 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
2724 LLVMValueRef invocation_id
, buffer
, buffer_offset
;
2725 LLVMValueRef lds_vertex_stride
, lds_vertex_offset
, lds_base
;
2728 invocation_id
= unpack_param(ctx
, ctx
->param_tcs_rel_ids
, 8, 5);
2729 buffer
= desc_from_addr_base64k(ctx
, ctx
->param_tcs_offchip_addr_base64k
);
2730 buffer_offset
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
2732 lds_vertex_stride
= get_tcs_in_vertex_dw_stride(ctx
);
2733 lds_vertex_offset
= LLVMBuildMul(ctx
->ac
.builder
, invocation_id
,
2734 lds_vertex_stride
, "");
2735 lds_base
= get_tcs_in_current_patch_offset(ctx
);
2736 lds_base
= LLVMBuildAdd(ctx
->ac
.builder
, lds_base
, lds_vertex_offset
, "");
2738 inputs
= ctx
->shader
->key
.mono
.u
.ff_tcs_inputs_to_copy
;
2740 unsigned i
= u_bit_scan64(&inputs
);
2742 LLVMValueRef lds_ptr
= LLVMBuildAdd(ctx
->ac
.builder
, lds_base
,
2743 LLVMConstInt(ctx
->i32
, 4 * i
, 0),
2746 LLVMValueRef buffer_addr
= get_tcs_tes_buffer_address(ctx
,
2747 get_rel_patch_id(ctx
),
2749 LLVMConstInt(ctx
->i32
, i
, 0));
2751 LLVMValueRef value
= lds_load(bld_base
, TGSI_TYPE_SIGNED
, ~0,
2754 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, value
, 4, buffer_addr
,
2755 buffer_offset
, 0, 1, 0, true, false);
2759 static void si_write_tess_factors(struct lp_build_tgsi_context
*bld_base
,
2760 LLVMValueRef rel_patch_id
,
2761 LLVMValueRef invocation_id
,
2762 LLVMValueRef tcs_out_current_patch_data_offset
,
2763 LLVMValueRef invoc0_tf_outer
[4],
2764 LLVMValueRef invoc0_tf_inner
[2])
2766 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
2767 struct si_shader
*shader
= ctx
->shader
;
2768 unsigned tess_inner_index
, tess_outer_index
;
2769 LLVMValueRef lds_base
, lds_inner
, lds_outer
, byteoffset
, buffer
;
2770 LLVMValueRef out
[6], vec0
, vec1
, tf_base
, inner
[4], outer
[4];
2771 unsigned stride
, outer_comps
, inner_comps
, i
, offset
;
2772 struct lp_build_if_state if_ctx
, inner_if_ctx
;
2774 /* Add a barrier before loading tess factors from LDS. */
2775 if (!shader
->key
.part
.tcs
.epilog
.invoc0_tess_factors_are_def
)
2776 si_llvm_emit_barrier(NULL
, bld_base
, NULL
);
2778 /* Do this only for invocation 0, because the tess levels are per-patch,
2781 * This can't jump, because invocation 0 executes this. It should
2782 * at least mask out the loads and stores for other invocations.
2784 lp_build_if(&if_ctx
, &ctx
->gallivm
,
2785 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
2786 invocation_id
, ctx
->i32_0
, ""));
2788 /* Determine the layout of one tess factor element in the buffer. */
2789 switch (shader
->key
.part
.tcs
.epilog
.prim_mode
) {
2790 case PIPE_PRIM_LINES
:
2791 stride
= 2; /* 2 dwords, 1 vec2 store */
2795 case PIPE_PRIM_TRIANGLES
:
2796 stride
= 4; /* 4 dwords, 1 vec4 store */
2800 case PIPE_PRIM_QUADS
:
2801 stride
= 6; /* 6 dwords, 2 stores (vec4 + vec2) */
2810 for (i
= 0; i
< 4; i
++) {
2811 inner
[i
] = LLVMGetUndef(ctx
->i32
);
2812 outer
[i
] = LLVMGetUndef(ctx
->i32
);
2815 if (shader
->key
.part
.tcs
.epilog
.invoc0_tess_factors_are_def
) {
2816 /* Tess factors are in VGPRs. */
2817 for (i
= 0; i
< outer_comps
; i
++)
2818 outer
[i
] = out
[i
] = invoc0_tf_outer
[i
];
2819 for (i
= 0; i
< inner_comps
; i
++)
2820 inner
[i
] = out
[outer_comps
+i
] = invoc0_tf_inner
[i
];
2822 /* Load tess_inner and tess_outer from LDS.
2823 * Any invocation can write them, so we can't get them from a temporary.
2825 tess_inner_index
= si_shader_io_get_unique_index_patch(TGSI_SEMANTIC_TESSINNER
, 0);
2826 tess_outer_index
= si_shader_io_get_unique_index_patch(TGSI_SEMANTIC_TESSOUTER
, 0);
2828 lds_base
= tcs_out_current_patch_data_offset
;
2829 lds_inner
= LLVMBuildAdd(ctx
->ac
.builder
, lds_base
,
2830 LLVMConstInt(ctx
->i32
,
2831 tess_inner_index
* 4, 0), "");
2832 lds_outer
= LLVMBuildAdd(ctx
->ac
.builder
, lds_base
,
2833 LLVMConstInt(ctx
->i32
,
2834 tess_outer_index
* 4, 0), "");
2836 for (i
= 0; i
< outer_comps
; i
++) {
2838 lds_load(bld_base
, TGSI_TYPE_SIGNED
, i
, lds_outer
);
2840 for (i
= 0; i
< inner_comps
; i
++) {
2841 inner
[i
] = out
[outer_comps
+i
] =
2842 lds_load(bld_base
, TGSI_TYPE_SIGNED
, i
, lds_inner
);
2846 if (shader
->key
.part
.tcs
.epilog
.prim_mode
== PIPE_PRIM_LINES
) {
2847 /* For isolines, the hardware expects tess factors in the
2848 * reverse order from what GLSL / TGSI specify.
2850 LLVMValueRef tmp
= out
[0];
2855 /* Convert the outputs to vectors for stores. */
2856 vec0
= lp_build_gather_values(&ctx
->gallivm
, out
, MIN2(stride
, 4));
2860 vec1
= lp_build_gather_values(&ctx
->gallivm
, out
+4, stride
- 4);
2862 /* Get the buffer. */
2863 buffer
= desc_from_addr_base64k(ctx
, ctx
->param_tcs_factor_addr_base64k
);
2865 /* Get the offset. */
2866 tf_base
= LLVMGetParam(ctx
->main_fn
,
2867 ctx
->param_tcs_factor_offset
);
2868 byteoffset
= LLVMBuildMul(ctx
->ac
.builder
, rel_patch_id
,
2869 LLVMConstInt(ctx
->i32
, 4 * stride
, 0), "");
2871 lp_build_if(&inner_if_ctx
, &ctx
->gallivm
,
2872 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntEQ
,
2873 rel_patch_id
, ctx
->i32_0
, ""));
2875 /* Store the dynamic HS control word. */
2877 if (ctx
->screen
->b
.chip_class
<= VI
) {
2878 ac_build_buffer_store_dword(&ctx
->ac
, buffer
,
2879 LLVMConstInt(ctx
->i32
, 0x80000000, 0),
2880 1, ctx
->i32_0
, tf_base
,
2881 offset
, 1, 0, true, false);
2885 lp_build_endif(&inner_if_ctx
);
2887 /* Store the tessellation factors. */
2888 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, vec0
,
2889 MIN2(stride
, 4), byteoffset
, tf_base
,
2890 offset
, 1, 0, true, false);
2893 ac_build_buffer_store_dword(&ctx
->ac
, buffer
, vec1
,
2894 stride
- 4, byteoffset
, tf_base
,
2895 offset
, 1, 0, true, false);
2897 /* Store the tess factors into the offchip buffer if TES reads them. */
2898 if (shader
->key
.part
.tcs
.epilog
.tes_reads_tess_factors
) {
2899 LLVMValueRef buf
, base
, inner_vec
, outer_vec
, tf_outer_offset
;
2900 LLVMValueRef tf_inner_offset
;
2901 unsigned param_outer
, param_inner
;
2903 buf
= desc_from_addr_base64k(ctx
, ctx
->param_tcs_offchip_addr_base64k
);
2904 base
= LLVMGetParam(ctx
->main_fn
, ctx
->param_tcs_offchip_offset
);
2906 param_outer
= si_shader_io_get_unique_index_patch(
2907 TGSI_SEMANTIC_TESSOUTER
, 0);
2908 tf_outer_offset
= get_tcs_tes_buffer_address(ctx
, rel_patch_id
, NULL
,
2909 LLVMConstInt(ctx
->i32
, param_outer
, 0));
2911 outer_vec
= lp_build_gather_values(&ctx
->gallivm
, outer
,
2912 util_next_power_of_two(outer_comps
));
2914 ac_build_buffer_store_dword(&ctx
->ac
, buf
, outer_vec
,
2915 outer_comps
, tf_outer_offset
,
2916 base
, 0, 1, 0, true, false);
2918 param_inner
= si_shader_io_get_unique_index_patch(
2919 TGSI_SEMANTIC_TESSINNER
, 0);
2920 tf_inner_offset
= get_tcs_tes_buffer_address(ctx
, rel_patch_id
, NULL
,
2921 LLVMConstInt(ctx
->i32
, param_inner
, 0));
2923 inner_vec
= inner_comps
== 1 ? inner
[0] :
2924 lp_build_gather_values(&ctx
->gallivm
, inner
, inner_comps
);
2925 ac_build_buffer_store_dword(&ctx
->ac
, buf
, inner_vec
,
2926 inner_comps
, tf_inner_offset
,
2927 base
, 0, 1, 0, true, false);
2931 lp_build_endif(&if_ctx
);
2935 si_insert_input_ret(struct si_shader_context
*ctx
, LLVMValueRef ret
,
2936 unsigned param
, unsigned return_index
)
2938 return LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
2939 LLVMGetParam(ctx
->main_fn
, param
),
2944 si_insert_input_ret_float(struct si_shader_context
*ctx
, LLVMValueRef ret
,
2945 unsigned param
, unsigned return_index
)
2947 LLVMBuilderRef builder
= ctx
->ac
.builder
;
2948 LLVMValueRef p
= LLVMGetParam(ctx
->main_fn
, param
);
2950 return LLVMBuildInsertValue(builder
, ret
,
2951 ac_to_float(&ctx
->ac
, p
),
2956 si_insert_input_ptr_as_2xi32(struct si_shader_context
*ctx
, LLVMValueRef ret
,
2957 unsigned param
, unsigned return_index
)
2959 LLVMBuilderRef builder
= ctx
->ac
.builder
;
2960 LLVMValueRef ptr
, lo
, hi
;
2962 ptr
= LLVMGetParam(ctx
->main_fn
, param
);
2963 ptr
= LLVMBuildPtrToInt(builder
, ptr
, ctx
->i64
, "");
2964 ptr
= LLVMBuildBitCast(builder
, ptr
, ctx
->v2i32
, "");
2965 lo
= LLVMBuildExtractElement(builder
, ptr
, ctx
->i32_0
, "");
2966 hi
= LLVMBuildExtractElement(builder
, ptr
, ctx
->i32_1
, "");
2967 ret
= LLVMBuildInsertValue(builder
, ret
, lo
, return_index
, "");
2968 return LLVMBuildInsertValue(builder
, ret
, hi
, return_index
+ 1, "");
2971 /* This only writes the tessellation factor levels. */
2972 static void si_llvm_emit_tcs_epilogue(struct lp_build_tgsi_context
*bld_base
)
2974 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
2975 LLVMBuilderRef builder
= ctx
->ac
.builder
;
2976 LLVMValueRef rel_patch_id
, invocation_id
, tf_lds_offset
;
2978 si_copy_tcs_inputs(bld_base
);
2980 rel_patch_id
= get_rel_patch_id(ctx
);
2981 invocation_id
= unpack_param(ctx
, ctx
->param_tcs_rel_ids
, 8, 5);
2982 tf_lds_offset
= get_tcs_out_current_patch_data_offset(ctx
);
2984 if (ctx
->screen
->b
.chip_class
>= GFX9
) {
2985 LLVMBasicBlockRef blocks
[2] = {
2986 LLVMGetInsertBlock(builder
),
2987 ctx
->merged_wrap_if_state
.entry_block
2989 LLVMValueRef values
[2];
2991 lp_build_endif(&ctx
->merged_wrap_if_state
);
2993 values
[0] = rel_patch_id
;
2994 values
[1] = LLVMGetUndef(ctx
->i32
);
2995 rel_patch_id
= ac_build_phi(&ctx
->ac
, ctx
->i32
, 2, values
, blocks
);
2997 values
[0] = tf_lds_offset
;
2998 values
[1] = LLVMGetUndef(ctx
->i32
);
2999 tf_lds_offset
= ac_build_phi(&ctx
->ac
, ctx
->i32
, 2, values
, blocks
);
3001 values
[0] = invocation_id
;
3002 values
[1] = ctx
->i32_1
; /* cause the epilog to skip threads */
3003 invocation_id
= ac_build_phi(&ctx
->ac
, ctx
->i32
, 2, values
, blocks
);
3006 /* Return epilog parameters from this function. */
3007 LLVMValueRef ret
= ctx
->return_value
;
3010 if (ctx
->screen
->b
.chip_class
>= GFX9
) {
3011 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_layout
,
3012 8 + GFX9_SGPR_TCS_OFFCHIP_LAYOUT
);
3013 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_addr_base64k
,
3014 8 + GFX9_SGPR_TCS_OFFCHIP_ADDR_BASE64K
);
3015 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_factor_addr_base64k
,
3016 8 + GFX9_SGPR_TCS_FACTOR_ADDR_BASE64K
);
3017 /* Tess offchip and tess factor offsets are at the beginning. */
3018 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_offset
, 2);
3019 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_factor_offset
, 4);
3020 vgpr
= 8 + GFX9_SGPR_TCS_FACTOR_ADDR_BASE64K
+ 1;
3022 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_layout
,
3023 GFX6_SGPR_TCS_OFFCHIP_LAYOUT
);
3024 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_addr_base64k
,
3025 GFX6_SGPR_TCS_OFFCHIP_ADDR_BASE64K
);
3026 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_factor_addr_base64k
,
3027 GFX6_SGPR_TCS_FACTOR_ADDR_BASE64K
);
3028 /* Tess offchip and tess factor offsets are after user SGPRs. */
3029 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_offset
,
3030 GFX6_TCS_NUM_USER_SGPR
);
3031 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_factor_offset
,
3032 GFX6_TCS_NUM_USER_SGPR
+ 1);
3033 vgpr
= GFX6_TCS_NUM_USER_SGPR
+ 2;
3037 rel_patch_id
= ac_to_float(&ctx
->ac
, rel_patch_id
);
3038 invocation_id
= ac_to_float(&ctx
->ac
, invocation_id
);
3039 tf_lds_offset
= ac_to_float(&ctx
->ac
, tf_lds_offset
);
3041 /* Leave a hole corresponding to the two input VGPRs. This ensures that
3042 * the invocation_id output does not alias the param_tcs_rel_ids input,
3043 * which saves a V_MOV on gfx9.
3047 ret
= LLVMBuildInsertValue(builder
, ret
, rel_patch_id
, vgpr
++, "");
3048 ret
= LLVMBuildInsertValue(builder
, ret
, invocation_id
, vgpr
++, "");
3050 if (ctx
->shader
->selector
->tcs_info
.tessfactors_are_def_in_all_invocs
) {
3051 vgpr
++; /* skip the tess factor LDS offset */
3052 for (unsigned i
= 0; i
< 6; i
++) {
3053 LLVMValueRef value
=
3054 LLVMBuildLoad(builder
, ctx
->invoc0_tess_factors
[i
], "");
3055 value
= ac_to_float(&ctx
->ac
, value
);
3056 ret
= LLVMBuildInsertValue(builder
, ret
, value
, vgpr
++, "");
3059 ret
= LLVMBuildInsertValue(builder
, ret
, tf_lds_offset
, vgpr
++, "");
3061 ctx
->return_value
= ret
;
3064 /* Pass TCS inputs from LS to TCS on GFX9. */
3065 static void si_set_ls_return_value_for_tcs(struct si_shader_context
*ctx
)
3067 LLVMValueRef ret
= ctx
->return_value
;
3069 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_offset
, 2);
3070 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_merged_wave_info
, 3);
3071 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_factor_offset
, 4);
3072 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_merged_scratch_offset
, 5);
3074 ret
= si_insert_input_ptr_as_2xi32(ctx
, ret
, ctx
->param_rw_buffers
,
3075 8 + SI_SGPR_RW_BUFFERS
);
3076 ret
= si_insert_input_ptr_as_2xi32(ctx
, ret
,
3077 ctx
->param_bindless_samplers_and_images
,
3078 8 + SI_SGPR_BINDLESS_SAMPLERS_AND_IMAGES
);
3080 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_vs_state_bits
,
3081 8 + SI_SGPR_VS_STATE_BITS
);
3082 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_layout
,
3083 8 + GFX9_SGPR_TCS_OFFCHIP_LAYOUT
);
3084 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_out_lds_offsets
,
3085 8 + GFX9_SGPR_TCS_OUT_OFFSETS
);
3086 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_out_lds_layout
,
3087 8 + GFX9_SGPR_TCS_OUT_LAYOUT
);
3088 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_offchip_addr_base64k
,
3089 8 + GFX9_SGPR_TCS_OFFCHIP_ADDR_BASE64K
);
3090 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_tcs_factor_addr_base64k
,
3091 8 + GFX9_SGPR_TCS_FACTOR_ADDR_BASE64K
);
3093 unsigned desc_param
= ctx
->param_tcs_factor_addr_base64k
+ 2;
3094 ret
= si_insert_input_ptr_as_2xi32(ctx
, ret
, desc_param
,
3095 8 + GFX9_SGPR_TCS_CONST_AND_SHADER_BUFFERS
);
3096 ret
= si_insert_input_ptr_as_2xi32(ctx
, ret
, desc_param
+ 1,
3097 8 + GFX9_SGPR_TCS_SAMPLERS_AND_IMAGES
);
3099 unsigned vgpr
= 8 + GFX9_TCS_NUM_USER_SGPR
;
3100 ret
= si_insert_input_ret_float(ctx
, ret
,
3101 ctx
->param_tcs_patch_id
, vgpr
++);
3102 ret
= si_insert_input_ret_float(ctx
, ret
,
3103 ctx
->param_tcs_rel_ids
, vgpr
++);
3104 ctx
->return_value
= ret
;
3107 /* Pass GS inputs from ES to GS on GFX9. */
3108 static void si_set_es_return_value_for_gs(struct si_shader_context
*ctx
)
3110 LLVMValueRef ret
= ctx
->return_value
;
3112 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_gs2vs_offset
, 2);
3113 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_merged_wave_info
, 3);
3114 ret
= si_insert_input_ret(ctx
, ret
, ctx
->param_merged_scratch_offset
, 5);
3116 ret
= si_insert_input_ptr_as_2xi32(ctx
, ret
, ctx
->param_rw_buffers
,
3117 8 + SI_SGPR_RW_BUFFERS
);
3118 ret
= si_insert_input_ptr_as_2xi32(ctx
, ret
,
3119 ctx
->param_bindless_samplers_and_images
,
3120 8 + SI_SGPR_BINDLESS_SAMPLERS_AND_IMAGES
);
3122 unsigned desc_param
= ctx
->param_vs_state_bits
+ 1;
3123 ret
= si_insert_input_ptr_as_2xi32(ctx
, ret
, desc_param
,
3124 8 + GFX9_SGPR_GS_CONST_AND_SHADER_BUFFERS
);
3125 ret
= si_insert_input_ptr_as_2xi32(ctx
, ret
, desc_param
+ 1,
3126 8 + GFX9_SGPR_GS_SAMPLERS_AND_IMAGES
);
3128 unsigned vgpr
= 8 + GFX9_GS_NUM_USER_SGPR
;
3129 for (unsigned i
= 0; i
< 5; i
++) {
3130 unsigned param
= ctx
->param_gs_vtx01_offset
+ i
;
3131 ret
= si_insert_input_ret_float(ctx
, ret
, param
, vgpr
++);
3133 ctx
->return_value
= ret
;
3136 static void si_llvm_emit_ls_epilogue(struct lp_build_tgsi_context
*bld_base
)
3138 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3139 struct si_shader
*shader
= ctx
->shader
;
3140 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
3142 LLVMValueRef vertex_id
= LLVMGetParam(ctx
->main_fn
,
3143 ctx
->param_rel_auto_id
);
3144 LLVMValueRef vertex_dw_stride
= get_tcs_in_vertex_dw_stride(ctx
);
3145 LLVMValueRef base_dw_addr
= LLVMBuildMul(ctx
->ac
.builder
, vertex_id
,
3146 vertex_dw_stride
, "");
3148 /* Write outputs to LDS. The next shader (TCS aka HS) will read
3149 * its inputs from it. */
3150 for (i
= 0; i
< info
->num_outputs
; i
++) {
3151 LLVMValueRef
*out_ptr
= ctx
->outputs
[i
];
3152 unsigned name
= info
->output_semantic_name
[i
];
3153 unsigned index
= info
->output_semantic_index
[i
];
3155 /* The ARB_shader_viewport_layer_array spec contains the
3158 * 2) What happens if gl_ViewportIndex or gl_Layer is
3159 * written in the vertex shader and a geometry shader is
3162 * RESOLVED: The value written by the last vertex processing
3163 * stage is used. If the last vertex processing stage
3164 * (vertex, tessellation evaluation or geometry) does not
3165 * statically assign to gl_ViewportIndex or gl_Layer, index
3166 * or layer zero is assumed.
3168 * So writes to those outputs in VS-as-LS are simply ignored.
3170 if (name
== TGSI_SEMANTIC_LAYER
||
3171 name
== TGSI_SEMANTIC_VIEWPORT_INDEX
)
3174 int param
= si_shader_io_get_unique_index(name
, index
);
3175 LLVMValueRef dw_addr
= LLVMBuildAdd(ctx
->ac
.builder
, base_dw_addr
,
3176 LLVMConstInt(ctx
->i32
, param
* 4, 0), "");
3178 for (chan
= 0; chan
< 4; chan
++) {
3179 if (!(info
->output_usagemask
[i
] & (1 << chan
)))
3182 lds_store(bld_base
, chan
, dw_addr
,
3183 LLVMBuildLoad(ctx
->ac
.builder
, out_ptr
[chan
], ""));
3187 if (ctx
->screen
->b
.chip_class
>= GFX9
)
3188 si_set_ls_return_value_for_tcs(ctx
);
3191 static void si_llvm_emit_es_epilogue(struct lp_build_tgsi_context
*bld_base
)
3193 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3194 struct si_shader
*es
= ctx
->shader
;
3195 struct tgsi_shader_info
*info
= &es
->selector
->info
;
3196 LLVMValueRef soffset
= LLVMGetParam(ctx
->main_fn
,
3197 ctx
->param_es2gs_offset
);
3198 LLVMValueRef lds_base
= NULL
;
3202 if (ctx
->screen
->b
.chip_class
>= GFX9
&& info
->num_outputs
) {
3203 unsigned itemsize_dw
= es
->selector
->esgs_itemsize
/ 4;
3204 LLVMValueRef vertex_idx
= ac_get_thread_id(&ctx
->ac
);
3205 LLVMValueRef wave_idx
= unpack_param(ctx
, ctx
->param_merged_wave_info
, 24, 4);
3206 vertex_idx
= LLVMBuildOr(ctx
->ac
.builder
, vertex_idx
,
3207 LLVMBuildMul(ctx
->ac
.builder
, wave_idx
,
3208 LLVMConstInt(ctx
->i32
, 64, false), ""), "");
3209 lds_base
= LLVMBuildMul(ctx
->ac
.builder
, vertex_idx
,
3210 LLVMConstInt(ctx
->i32
, itemsize_dw
, 0), "");
3213 for (i
= 0; i
< info
->num_outputs
; i
++) {
3214 LLVMValueRef
*out_ptr
= ctx
->outputs
[i
];
3217 if (info
->output_semantic_name
[i
] == TGSI_SEMANTIC_VIEWPORT_INDEX
||
3218 info
->output_semantic_name
[i
] == TGSI_SEMANTIC_LAYER
)
3221 param
= si_shader_io_get_unique_index(info
->output_semantic_name
[i
],
3222 info
->output_semantic_index
[i
]);
3224 for (chan
= 0; chan
< 4; chan
++) {
3225 LLVMValueRef out_val
= LLVMBuildLoad(ctx
->ac
.builder
, out_ptr
[chan
], "");
3226 out_val
= ac_to_integer(&ctx
->ac
, out_val
);
3228 /* GFX9 has the ESGS ring in LDS. */
3229 if (ctx
->screen
->b
.chip_class
>= GFX9
) {
3230 lds_store(bld_base
, param
* 4 + chan
, lds_base
, out_val
);
3234 ac_build_buffer_store_dword(&ctx
->ac
,
3236 out_val
, 1, NULL
, soffset
,
3237 (4 * param
+ chan
) * 4,
3242 if (ctx
->screen
->b
.chip_class
>= GFX9
)
3243 si_set_es_return_value_for_gs(ctx
);
3246 static LLVMValueRef
si_get_gs_wave_id(struct si_shader_context
*ctx
)
3248 if (ctx
->screen
->b
.chip_class
>= GFX9
)
3249 return unpack_param(ctx
, ctx
->param_merged_wave_info
, 16, 8);
3251 return LLVMGetParam(ctx
->main_fn
, ctx
->param_gs_wave_id
);
3254 static void si_llvm_emit_gs_epilogue(struct lp_build_tgsi_context
*bld_base
)
3256 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3258 ac_build_sendmsg(&ctx
->ac
, AC_SENDMSG_GS_OP_NOP
| AC_SENDMSG_GS_DONE
,
3259 si_get_gs_wave_id(ctx
));
3261 if (ctx
->screen
->b
.chip_class
>= GFX9
)
3262 lp_build_endif(&ctx
->merged_wrap_if_state
);
3265 static void si_llvm_emit_vs_epilogue(struct ac_shader_abi
*abi
,
3266 unsigned max_outputs
,
3267 LLVMValueRef
*addrs
)
3269 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3270 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
3271 struct si_shader_output_values
*outputs
= NULL
;
3274 assert(!ctx
->shader
->is_gs_copy_shader
);
3275 assert(info
->num_outputs
<= max_outputs
);
3277 outputs
= MALLOC((info
->num_outputs
+ 1) * sizeof(outputs
[0]));
3279 /* Vertex color clamping.
3281 * This uses a state constant loaded in a user data SGPR and
3282 * an IF statement is added that clamps all colors if the constant
3285 if (ctx
->type
== PIPE_SHADER_VERTEX
) {
3286 struct lp_build_if_state if_ctx
;
3287 LLVMValueRef cond
= NULL
;
3288 LLVMValueRef addr
, val
;
3290 for (i
= 0; i
< info
->num_outputs
; i
++) {
3291 if (info
->output_semantic_name
[i
] != TGSI_SEMANTIC_COLOR
&&
3292 info
->output_semantic_name
[i
] != TGSI_SEMANTIC_BCOLOR
)
3295 /* We've found a color. */
3297 /* The state is in the first bit of the user SGPR. */
3298 cond
= LLVMGetParam(ctx
->main_fn
,
3299 ctx
->param_vs_state_bits
);
3300 cond
= LLVMBuildTrunc(ctx
->ac
.builder
, cond
,
3302 lp_build_if(&if_ctx
, &ctx
->gallivm
, cond
);
3305 for (j
= 0; j
< 4; j
++) {
3306 addr
= addrs
[4 * i
+ j
];
3307 val
= LLVMBuildLoad(ctx
->ac
.builder
, addr
, "");
3308 val
= ac_build_clamp(&ctx
->ac
, val
);
3309 LLVMBuildStore(ctx
->ac
.builder
, val
, addr
);
3314 lp_build_endif(&if_ctx
);
3317 for (i
= 0; i
< info
->num_outputs
; i
++) {
3318 outputs
[i
].semantic_name
= info
->output_semantic_name
[i
];
3319 outputs
[i
].semantic_index
= info
->output_semantic_index
[i
];
3321 for (j
= 0; j
< 4; j
++) {
3322 outputs
[i
].values
[j
] =
3323 LLVMBuildLoad(ctx
->ac
.builder
,
3326 outputs
[i
].vertex_stream
[j
] =
3327 (info
->output_streams
[i
] >> (2 * j
)) & 3;
3331 if (ctx
->shader
->selector
->so
.num_outputs
)
3332 si_llvm_emit_streamout(ctx
, outputs
, i
, 0);
3334 /* Export PrimitiveID. */
3335 if (ctx
->shader
->key
.mono
.u
.vs_export_prim_id
) {
3336 outputs
[i
].semantic_name
= TGSI_SEMANTIC_PRIMID
;
3337 outputs
[i
].semantic_index
= 0;
3338 outputs
[i
].values
[0] = ac_to_float(&ctx
->ac
, get_primitive_id(ctx
, 0));
3339 for (j
= 1; j
< 4; j
++)
3340 outputs
[i
].values
[j
] = LLVMConstReal(ctx
->f32
, 0);
3342 memset(outputs
[i
].vertex_stream
, 0,
3343 sizeof(outputs
[i
].vertex_stream
));
3347 si_llvm_export_vs(&ctx
->bld_base
, outputs
, i
);
3351 static void si_tgsi_emit_epilogue(struct lp_build_tgsi_context
*bld_base
)
3353 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3355 ctx
->abi
.emit_outputs(&ctx
->abi
, RADEON_LLVM_MAX_OUTPUTS
,
3356 &ctx
->outputs
[0][0]);
3359 struct si_ps_exports
{
3361 struct ac_export_args args
[10];
3364 unsigned si_get_spi_shader_z_format(bool writes_z
, bool writes_stencil
,
3365 bool writes_samplemask
)
3368 /* Z needs 32 bits. */
3369 if (writes_samplemask
)
3370 return V_028710_SPI_SHADER_32_ABGR
;
3371 else if (writes_stencil
)
3372 return V_028710_SPI_SHADER_32_GR
;
3374 return V_028710_SPI_SHADER_32_R
;
3375 } else if (writes_stencil
|| writes_samplemask
) {
3376 /* Both stencil and sample mask need only 16 bits. */
3377 return V_028710_SPI_SHADER_UINT16_ABGR
;
3379 return V_028710_SPI_SHADER_ZERO
;
3383 static void si_export_mrt_z(struct lp_build_tgsi_context
*bld_base
,
3384 LLVMValueRef depth
, LLVMValueRef stencil
,
3385 LLVMValueRef samplemask
, struct si_ps_exports
*exp
)
3387 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3388 struct lp_build_context
*base
= &bld_base
->base
;
3389 struct ac_export_args args
;
3391 unsigned format
= si_get_spi_shader_z_format(depth
!= NULL
,
3393 samplemask
!= NULL
);
3395 assert(depth
|| stencil
|| samplemask
);
3397 args
.valid_mask
= 1; /* whether the EXEC mask is valid */
3398 args
.done
= 1; /* DONE bit */
3400 /* Specify the target we are exporting */
3401 args
.target
= V_008DFC_SQ_EXP_MRTZ
;
3403 args
.compr
= 0; /* COMP flag */
3404 args
.out
[0] = base
->undef
; /* R, depth */
3405 args
.out
[1] = base
->undef
; /* G, stencil test value[0:7], stencil op value[8:15] */
3406 args
.out
[2] = base
->undef
; /* B, sample mask */
3407 args
.out
[3] = base
->undef
; /* A, alpha to mask */
3409 if (format
== V_028710_SPI_SHADER_UINT16_ABGR
) {
3411 args
.compr
= 1; /* COMPR flag */
3414 /* Stencil should be in X[23:16]. */
3415 stencil
= ac_to_integer(&ctx
->ac
, stencil
);
3416 stencil
= LLVMBuildShl(ctx
->ac
.builder
, stencil
,
3417 LLVMConstInt(ctx
->i32
, 16, 0), "");
3418 args
.out
[0] = ac_to_float(&ctx
->ac
, stencil
);
3422 /* SampleMask should be in Y[15:0]. */
3423 args
.out
[1] = samplemask
;
3428 args
.out
[0] = depth
;
3432 args
.out
[1] = stencil
;
3436 args
.out
[2] = samplemask
;
3441 /* SI (except OLAND and HAINAN) has a bug that it only looks
3442 * at the X writemask component. */
3443 if (ctx
->screen
->b
.chip_class
== SI
&&
3444 ctx
->screen
->b
.family
!= CHIP_OLAND
&&
3445 ctx
->screen
->b
.family
!= CHIP_HAINAN
)
3448 /* Specify which components to enable */
3449 args
.enabled_channels
= mask
;
3451 memcpy(&exp
->args
[exp
->num
++], &args
, sizeof(args
));
3454 static void si_export_mrt_color(struct lp_build_tgsi_context
*bld_base
,
3455 LLVMValueRef
*color
, unsigned index
,
3456 unsigned samplemask_param
,
3457 bool is_last
, struct si_ps_exports
*exp
)
3459 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3463 if (ctx
->shader
->key
.part
.ps
.epilog
.clamp_color
)
3464 for (i
= 0; i
< 4; i
++)
3465 color
[i
] = ac_build_clamp(&ctx
->ac
, color
[i
]);
3468 if (ctx
->shader
->key
.part
.ps
.epilog
.alpha_to_one
)
3469 color
[3] = ctx
->ac
.f32_1
;
3473 ctx
->shader
->key
.part
.ps
.epilog
.alpha_func
!= PIPE_FUNC_ALWAYS
)
3474 si_alpha_test(bld_base
, color
[3]);
3476 /* Line & polygon smoothing */
3477 if (ctx
->shader
->key
.part
.ps
.epilog
.poly_line_smoothing
)
3478 color
[3] = si_scale_alpha_by_sample_mask(bld_base
, color
[3],
3481 /* If last_cbuf > 0, FS_COLOR0_WRITES_ALL_CBUFS is true. */
3482 if (ctx
->shader
->key
.part
.ps
.epilog
.last_cbuf
> 0) {
3483 struct ac_export_args args
[8];
3486 /* Get the export arguments, also find out what the last one is. */
3487 for (c
= 0; c
<= ctx
->shader
->key
.part
.ps
.epilog
.last_cbuf
; c
++) {
3488 si_llvm_init_export_args(bld_base
, color
,
3489 V_008DFC_SQ_EXP_MRT
+ c
, &args
[c
]);
3490 if (args
[c
].enabled_channels
)
3494 /* Emit all exports. */
3495 for (c
= 0; c
<= ctx
->shader
->key
.part
.ps
.epilog
.last_cbuf
; c
++) {
3496 if (is_last
&& last
== c
) {
3497 args
[c
].valid_mask
= 1; /* whether the EXEC mask is valid */
3498 args
[c
].done
= 1; /* DONE bit */
3499 } else if (!args
[c
].enabled_channels
)
3500 continue; /* unnecessary NULL export */
3502 memcpy(&exp
->args
[exp
->num
++], &args
[c
], sizeof(args
[c
]));
3505 struct ac_export_args args
;
3508 si_llvm_init_export_args(bld_base
, color
, V_008DFC_SQ_EXP_MRT
+ index
,
3511 args
.valid_mask
= 1; /* whether the EXEC mask is valid */
3512 args
.done
= 1; /* DONE bit */
3513 } else if (!args
.enabled_channels
)
3514 return; /* unnecessary NULL export */
3516 memcpy(&exp
->args
[exp
->num
++], &args
, sizeof(args
));
3520 static void si_emit_ps_exports(struct si_shader_context
*ctx
,
3521 struct si_ps_exports
*exp
)
3523 for (unsigned i
= 0; i
< exp
->num
; i
++)
3524 ac_build_export(&ctx
->ac
, &exp
->args
[i
]);
3527 static void si_export_null(struct lp_build_tgsi_context
*bld_base
)
3529 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3530 struct lp_build_context
*base
= &bld_base
->base
;
3531 struct ac_export_args args
;
3533 args
.enabled_channels
= 0x0; /* enabled channels */
3534 args
.valid_mask
= 1; /* whether the EXEC mask is valid */
3535 args
.done
= 1; /* DONE bit */
3536 args
.target
= V_008DFC_SQ_EXP_NULL
;
3537 args
.compr
= 0; /* COMPR flag (0 = 32-bit export) */
3538 args
.out
[0] = base
->undef
; /* R */
3539 args
.out
[1] = base
->undef
; /* G */
3540 args
.out
[2] = base
->undef
; /* B */
3541 args
.out
[3] = base
->undef
; /* A */
3543 ac_build_export(&ctx
->ac
, &args
);
3547 * Return PS outputs in this order:
3549 * v[0:3] = color0.xyzw
3550 * v[4:7] = color1.xyzw
3555 * vN+3 = SampleMaskIn (used for OpenGL smoothing)
3557 * The alpha-ref SGPR is returned via its original location.
3559 static void si_llvm_return_fs_outputs(struct ac_shader_abi
*abi
,
3560 unsigned max_outputs
,
3561 LLVMValueRef
*addrs
)
3563 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
3564 struct si_shader
*shader
= ctx
->shader
;
3565 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
3566 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3567 unsigned i
, j
, first_vgpr
, vgpr
;
3569 LLVMValueRef color
[8][4] = {};
3570 LLVMValueRef depth
= NULL
, stencil
= NULL
, samplemask
= NULL
;
3573 if (ctx
->postponed_kill
)
3574 ac_build_kill_if_false(&ctx
->ac
, LLVMBuildLoad(builder
, ctx
->postponed_kill
, ""));
3576 /* Read the output values. */
3577 for (i
= 0; i
< info
->num_outputs
; i
++) {
3578 unsigned semantic_name
= info
->output_semantic_name
[i
];
3579 unsigned semantic_index
= info
->output_semantic_index
[i
];
3581 switch (semantic_name
) {
3582 case TGSI_SEMANTIC_COLOR
:
3583 assert(semantic_index
< 8);
3584 for (j
= 0; j
< 4; j
++) {
3585 LLVMValueRef ptr
= addrs
[4 * i
+ j
];
3586 LLVMValueRef result
= LLVMBuildLoad(builder
, ptr
, "");
3587 color
[semantic_index
][j
] = result
;
3590 case TGSI_SEMANTIC_POSITION
:
3591 depth
= LLVMBuildLoad(builder
,
3592 addrs
[4 * i
+ 2], "");
3594 case TGSI_SEMANTIC_STENCIL
:
3595 stencil
= LLVMBuildLoad(builder
,
3596 addrs
[4 * i
+ 1], "");
3598 case TGSI_SEMANTIC_SAMPLEMASK
:
3599 samplemask
= LLVMBuildLoad(builder
,
3600 addrs
[4 * i
+ 0], "");
3603 fprintf(stderr
, "Warning: SI unhandled fs output type:%d\n",
3608 /* Fill the return structure. */
3609 ret
= ctx
->return_value
;
3612 ret
= LLVMBuildInsertValue(builder
, ret
,
3613 ac_to_integer(&ctx
->ac
,
3614 LLVMGetParam(ctx
->main_fn
,
3615 SI_PARAM_ALPHA_REF
)),
3616 SI_SGPR_ALPHA_REF
, "");
3619 first_vgpr
= vgpr
= SI_SGPR_ALPHA_REF
+ 1;
3620 for (i
= 0; i
< ARRAY_SIZE(color
); i
++) {
3624 for (j
= 0; j
< 4; j
++)
3625 ret
= LLVMBuildInsertValue(builder
, ret
, color
[i
][j
], vgpr
++, "");
3628 ret
= LLVMBuildInsertValue(builder
, ret
, depth
, vgpr
++, "");
3630 ret
= LLVMBuildInsertValue(builder
, ret
, stencil
, vgpr
++, "");
3632 ret
= LLVMBuildInsertValue(builder
, ret
, samplemask
, vgpr
++, "");
3634 /* Add the input sample mask for smoothing at the end. */
3635 if (vgpr
< first_vgpr
+ PS_EPILOG_SAMPLEMASK_MIN_LOC
)
3636 vgpr
= first_vgpr
+ PS_EPILOG_SAMPLEMASK_MIN_LOC
;
3637 ret
= LLVMBuildInsertValue(builder
, ret
,
3638 LLVMGetParam(ctx
->main_fn
,
3639 SI_PARAM_SAMPLE_COVERAGE
), vgpr
++, "");
3641 ctx
->return_value
= ret
;
3644 void si_emit_waitcnt(struct si_shader_context
*ctx
, unsigned simm16
)
3646 LLVMValueRef args
[1] = {
3647 LLVMConstInt(ctx
->i32
, simm16
, 0)
3649 lp_build_intrinsic(ctx
->ac
.builder
, "llvm.amdgcn.s.waitcnt",
3650 ctx
->voidt
, args
, 1, 0);
3653 static void membar_emit(
3654 const struct lp_build_tgsi_action
*action
,
3655 struct lp_build_tgsi_context
*bld_base
,
3656 struct lp_build_emit_data
*emit_data
)
3658 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3659 LLVMValueRef src0
= lp_build_emit_fetch(bld_base
, emit_data
->inst
, 0, 0);
3660 unsigned flags
= LLVMConstIntGetZExtValue(src0
);
3661 unsigned waitcnt
= NOOP_WAITCNT
;
3663 if (flags
& TGSI_MEMBAR_THREAD_GROUP
)
3664 waitcnt
&= VM_CNT
& LGKM_CNT
;
3666 if (flags
& (TGSI_MEMBAR_ATOMIC_BUFFER
|
3667 TGSI_MEMBAR_SHADER_BUFFER
|
3668 TGSI_MEMBAR_SHADER_IMAGE
))
3671 if (flags
& TGSI_MEMBAR_SHARED
)
3672 waitcnt
&= LGKM_CNT
;
3674 if (waitcnt
!= NOOP_WAITCNT
)
3675 si_emit_waitcnt(ctx
, waitcnt
);
3678 static void clock_emit(
3679 const struct lp_build_tgsi_action
*action
,
3680 struct lp_build_tgsi_context
*bld_base
,
3681 struct lp_build_emit_data
*emit_data
)
3683 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3686 tmp
= lp_build_intrinsic(ctx
->ac
.builder
, "llvm.readcyclecounter",
3687 ctx
->i64
, NULL
, 0, 0);
3688 tmp
= LLVMBuildBitCast(ctx
->ac
.builder
, tmp
, ctx
->v2i32
, "");
3690 emit_data
->output
[0] =
3691 LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
, ctx
->i32_0
, "");
3692 emit_data
->output
[1] =
3693 LLVMBuildExtractElement(ctx
->ac
.builder
, tmp
, ctx
->i32_1
, "");
3696 LLVMTypeRef
si_const_array(LLVMTypeRef elem_type
, int num_elements
)
3698 return LLVMPointerType(LLVMArrayType(elem_type
, num_elements
),
3702 static void si_llvm_emit_ddxy(
3703 const struct lp_build_tgsi_action
*action
,
3704 struct lp_build_tgsi_context
*bld_base
,
3705 struct lp_build_emit_data
*emit_data
)
3707 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3708 unsigned opcode
= emit_data
->info
->opcode
;
3713 if (opcode
== TGSI_OPCODE_DDX_FINE
)
3714 mask
= AC_TID_MASK_LEFT
;
3715 else if (opcode
== TGSI_OPCODE_DDY_FINE
)
3716 mask
= AC_TID_MASK_TOP
;
3718 mask
= AC_TID_MASK_TOP_LEFT
;
3720 /* for DDX we want to next X pixel, DDY next Y pixel. */
3721 idx
= (opcode
== TGSI_OPCODE_DDX
|| opcode
== TGSI_OPCODE_DDX_FINE
) ? 1 : 2;
3723 val
= ac_to_integer(&ctx
->ac
, emit_data
->args
[0]);
3724 val
= ac_build_ddxy(&ctx
->ac
, mask
, idx
, val
);
3725 emit_data
->output
[emit_data
->chan
] = val
;
3729 * this takes an I,J coordinate pair,
3730 * and works out the X and Y derivatives.
3731 * it returns DDX(I), DDX(J), DDY(I), DDY(J).
3733 static LLVMValueRef
si_llvm_emit_ddxy_interp(
3734 struct lp_build_tgsi_context
*bld_base
,
3735 LLVMValueRef interp_ij
)
3737 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3738 LLVMValueRef result
[4], a
;
3741 for (i
= 0; i
< 2; i
++) {
3742 a
= LLVMBuildExtractElement(ctx
->ac
.builder
, interp_ij
,
3743 LLVMConstInt(ctx
->i32
, i
, 0), "");
3744 result
[i
] = lp_build_emit_llvm_unary(bld_base
, TGSI_OPCODE_DDX
, a
);
3745 result
[2+i
] = lp_build_emit_llvm_unary(bld_base
, TGSI_OPCODE_DDY
, a
);
3748 return lp_build_gather_values(&ctx
->gallivm
, result
, 4);
3751 static void interp_fetch_args(
3752 struct lp_build_tgsi_context
*bld_base
,
3753 struct lp_build_emit_data
*emit_data
)
3755 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3756 const struct tgsi_full_instruction
*inst
= emit_data
->inst
;
3758 if (inst
->Instruction
.Opcode
== TGSI_OPCODE_INTERP_OFFSET
) {
3759 /* offset is in second src, first two channels */
3760 emit_data
->args
[0] = lp_build_emit_fetch(bld_base
,
3763 emit_data
->args
[1] = lp_build_emit_fetch(bld_base
,
3766 emit_data
->arg_count
= 2;
3767 } else if (inst
->Instruction
.Opcode
== TGSI_OPCODE_INTERP_SAMPLE
) {
3768 LLVMValueRef sample_position
;
3769 LLVMValueRef sample_id
;
3770 LLVMValueRef halfval
= LLVMConstReal(ctx
->f32
, 0.5f
);
3772 /* fetch sample ID, then fetch its sample position,
3773 * and place into first two channels.
3775 sample_id
= lp_build_emit_fetch(bld_base
,
3776 emit_data
->inst
, 1, TGSI_CHAN_X
);
3777 sample_id
= ac_to_integer(&ctx
->ac
, sample_id
);
3779 /* Section 8.13.2 (Interpolation Functions) of the OpenGL Shading
3780 * Language 4.50 spec says about interpolateAtSample:
3782 * "Returns the value of the input interpolant variable at
3783 * the location of sample number sample. If multisample
3784 * buffers are not available, the input variable will be
3785 * evaluated at the center of the pixel. If sample sample
3786 * does not exist, the position used to interpolate the
3787 * input variable is undefined."
3789 * This means that sample_id values outside of the valid are
3790 * in fact valid input, and the usual mechanism for loading the
3791 * sample position doesn't work.
3793 if (ctx
->shader
->key
.mono
.u
.ps
.interpolate_at_sample_force_center
) {
3794 LLVMValueRef center
[4] = {
3795 LLVMConstReal(ctx
->f32
, 0.5),
3796 LLVMConstReal(ctx
->f32
, 0.5),
3801 sample_position
= lp_build_gather_values(&ctx
->gallivm
, center
, 4);
3803 sample_position
= load_sample_position(ctx
, sample_id
);
3806 emit_data
->args
[0] = LLVMBuildExtractElement(ctx
->ac
.builder
,
3810 emit_data
->args
[0] = LLVMBuildFSub(ctx
->ac
.builder
, emit_data
->args
[0], halfval
, "");
3811 emit_data
->args
[1] = LLVMBuildExtractElement(ctx
->ac
.builder
,
3814 emit_data
->args
[1] = LLVMBuildFSub(ctx
->ac
.builder
, emit_data
->args
[1], halfval
, "");
3815 emit_data
->arg_count
= 2;
3819 static void build_interp_intrinsic(const struct lp_build_tgsi_action
*action
,
3820 struct lp_build_tgsi_context
*bld_base
,
3821 struct lp_build_emit_data
*emit_data
)
3823 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3824 struct si_shader
*shader
= ctx
->shader
;
3825 const struct tgsi_shader_info
*info
= &shader
->selector
->info
;
3826 LLVMValueRef interp_param
;
3827 const struct tgsi_full_instruction
*inst
= emit_data
->inst
;
3828 const struct tgsi_full_src_register
*input
= &inst
->Src
[0];
3829 int input_base
, input_array_size
;
3832 LLVMValueRef prim_mask
= LLVMGetParam(ctx
->main_fn
, SI_PARAM_PRIM_MASK
);
3833 LLVMValueRef array_idx
;
3834 int interp_param_idx
;
3838 assert(input
->Register
.File
== TGSI_FILE_INPUT
);
3840 if (input
->Register
.Indirect
) {
3841 unsigned array_id
= input
->Indirect
.ArrayID
;
3844 input_base
= info
->input_array_first
[array_id
];
3845 input_array_size
= info
->input_array_last
[array_id
] - input_base
+ 1;
3847 input_base
= inst
->Src
[0].Register
.Index
;
3848 input_array_size
= info
->num_inputs
- input_base
;
3851 array_idx
= si_get_indirect_index(ctx
, &input
->Indirect
,
3852 1, input
->Register
.Index
- input_base
);
3854 input_base
= inst
->Src
[0].Register
.Index
;
3855 input_array_size
= 1;
3856 array_idx
= ctx
->i32_0
;
3859 interp
= shader
->selector
->info
.input_interpolate
[input_base
];
3861 if (inst
->Instruction
.Opcode
== TGSI_OPCODE_INTERP_OFFSET
||
3862 inst
->Instruction
.Opcode
== TGSI_OPCODE_INTERP_SAMPLE
)
3863 location
= TGSI_INTERPOLATE_LOC_CENTER
;
3865 location
= TGSI_INTERPOLATE_LOC_CENTROID
;
3867 interp_param_idx
= lookup_interp_param_index(interp
, location
);
3868 if (interp_param_idx
== -1)
3870 else if (interp_param_idx
)
3871 interp_param
= LLVMGetParam(ctx
->main_fn
, interp_param_idx
);
3873 interp_param
= NULL
;
3875 if (inst
->Instruction
.Opcode
== TGSI_OPCODE_INTERP_OFFSET
||
3876 inst
->Instruction
.Opcode
== TGSI_OPCODE_INTERP_SAMPLE
) {
3877 LLVMValueRef ij_out
[2];
3878 LLVMValueRef ddxy_out
= si_llvm_emit_ddxy_interp(bld_base
, interp_param
);
3881 * take the I then J parameters, and the DDX/Y for it, and
3882 * calculate the IJ inputs for the interpolator.
3883 * temp1 = ddx * offset/sample.x + I;
3884 * interp_param.I = ddy * offset/sample.y + temp1;
3885 * temp1 = ddx * offset/sample.x + J;
3886 * interp_param.J = ddy * offset/sample.y + temp1;
3888 for (i
= 0; i
< 2; i
++) {
3889 LLVMValueRef ix_ll
= LLVMConstInt(ctx
->i32
, i
, 0);
3890 LLVMValueRef iy_ll
= LLVMConstInt(ctx
->i32
, i
+ 2, 0);
3891 LLVMValueRef ddx_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3892 ddxy_out
, ix_ll
, "");
3893 LLVMValueRef ddy_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3894 ddxy_out
, iy_ll
, "");
3895 LLVMValueRef interp_el
= LLVMBuildExtractElement(ctx
->ac
.builder
,
3896 interp_param
, ix_ll
, "");
3897 LLVMValueRef temp1
, temp2
;
3899 interp_el
= ac_to_float(&ctx
->ac
, interp_el
);
3901 temp1
= LLVMBuildFMul(ctx
->ac
.builder
, ddx_el
, emit_data
->args
[0], "");
3903 temp1
= LLVMBuildFAdd(ctx
->ac
.builder
, temp1
, interp_el
, "");
3905 temp2
= LLVMBuildFMul(ctx
->ac
.builder
, ddy_el
, emit_data
->args
[1], "");
3907 ij_out
[i
] = LLVMBuildFAdd(ctx
->ac
.builder
, temp2
, temp1
, "");
3909 interp_param
= lp_build_gather_values(&ctx
->gallivm
, ij_out
, 2);
3913 interp_param
= ac_to_float(&ctx
->ac
, interp_param
);
3915 for (chan
= 0; chan
< 4; chan
++) {
3916 LLVMValueRef gather
= LLVMGetUndef(LLVMVectorType(ctx
->f32
, input_array_size
));
3917 unsigned schan
= tgsi_util_get_full_src_register_swizzle(&inst
->Src
[0], chan
);
3919 for (unsigned idx
= 0; idx
< input_array_size
; ++idx
) {
3920 LLVMValueRef v
, i
= NULL
, j
= NULL
;
3923 i
= LLVMBuildExtractElement(
3924 ctx
->ac
.builder
, interp_param
, ctx
->i32_0
, "");
3925 j
= LLVMBuildExtractElement(
3926 ctx
->ac
.builder
, interp_param
, ctx
->i32_1
, "");
3928 v
= si_build_fs_interp(ctx
, input_base
+ idx
, schan
,
3931 gather
= LLVMBuildInsertElement(ctx
->ac
.builder
,
3932 gather
, v
, LLVMConstInt(ctx
->i32
, idx
, false), "");
3935 emit_data
->output
[chan
] = LLVMBuildExtractElement(
3936 ctx
->ac
.builder
, gather
, array_idx
, "");
3940 static void vote_all_emit(
3941 const struct lp_build_tgsi_action
*action
,
3942 struct lp_build_tgsi_context
*bld_base
,
3943 struct lp_build_emit_data
*emit_data
)
3945 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3947 LLVMValueRef tmp
= ac_build_vote_all(&ctx
->ac
, emit_data
->args
[0]);
3948 emit_data
->output
[emit_data
->chan
] =
3949 LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->i32
, "");
3952 static void vote_any_emit(
3953 const struct lp_build_tgsi_action
*action
,
3954 struct lp_build_tgsi_context
*bld_base
,
3955 struct lp_build_emit_data
*emit_data
)
3957 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3959 LLVMValueRef tmp
= ac_build_vote_any(&ctx
->ac
, emit_data
->args
[0]);
3960 emit_data
->output
[emit_data
->chan
] =
3961 LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->i32
, "");
3964 static void vote_eq_emit(
3965 const struct lp_build_tgsi_action
*action
,
3966 struct lp_build_tgsi_context
*bld_base
,
3967 struct lp_build_emit_data
*emit_data
)
3969 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3971 LLVMValueRef tmp
= ac_build_vote_eq(&ctx
->ac
, emit_data
->args
[0]);
3972 emit_data
->output
[emit_data
->chan
] =
3973 LLVMBuildSExt(ctx
->ac
.builder
, tmp
, ctx
->i32
, "");
3976 static void ballot_emit(
3977 const struct lp_build_tgsi_action
*action
,
3978 struct lp_build_tgsi_context
*bld_base
,
3979 struct lp_build_emit_data
*emit_data
)
3981 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
3982 LLVMBuilderRef builder
= ctx
->ac
.builder
;
3985 tmp
= lp_build_emit_fetch(bld_base
, emit_data
->inst
, 0, TGSI_CHAN_X
);
3986 tmp
= ac_build_ballot(&ctx
->ac
, tmp
);
3987 tmp
= LLVMBuildBitCast(builder
, tmp
, ctx
->v2i32
, "");
3989 emit_data
->output
[0] = LLVMBuildExtractElement(builder
, tmp
, ctx
->i32_0
, "");
3990 emit_data
->output
[1] = LLVMBuildExtractElement(builder
, tmp
, ctx
->i32_1
, "");
3993 static void read_invoc_fetch_args(
3994 struct lp_build_tgsi_context
*bld_base
,
3995 struct lp_build_emit_data
*emit_data
)
3997 emit_data
->args
[0] = lp_build_emit_fetch(bld_base
, emit_data
->inst
,
3998 0, emit_data
->src_chan
);
4000 /* Always read the source invocation (= lane) from the X channel. */
4001 emit_data
->args
[1] = lp_build_emit_fetch(bld_base
, emit_data
->inst
,
4003 emit_data
->arg_count
= 2;
4006 static void read_lane_emit(
4007 const struct lp_build_tgsi_action
*action
,
4008 struct lp_build_tgsi_context
*bld_base
,
4009 struct lp_build_emit_data
*emit_data
)
4011 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4013 /* We currently have no other way to prevent LLVM from lifting the icmp
4014 * calls to a dominating basic block.
4016 ac_build_optimization_barrier(&ctx
->ac
, &emit_data
->args
[0]);
4018 for (unsigned i
= 0; i
< emit_data
->arg_count
; ++i
)
4019 emit_data
->args
[i
] = ac_to_integer(&ctx
->ac
, emit_data
->args
[i
]);
4021 emit_data
->output
[emit_data
->chan
] =
4022 ac_build_intrinsic(&ctx
->ac
, action
->intr_name
,
4023 ctx
->i32
, emit_data
->args
, emit_data
->arg_count
,
4024 AC_FUNC_ATTR_READNONE
|
4025 AC_FUNC_ATTR_CONVERGENT
);
4028 static unsigned si_llvm_get_stream(struct lp_build_tgsi_context
*bld_base
,
4029 struct lp_build_emit_data
*emit_data
)
4031 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4032 struct tgsi_src_register src0
= emit_data
->inst
->Src
[0].Register
;
4036 assert(src0
.File
== TGSI_FILE_IMMEDIATE
);
4038 imm
= ctx
->imms
[src0
.Index
* TGSI_NUM_CHANNELS
+ src0
.SwizzleX
];
4039 stream
= LLVMConstIntGetZExtValue(imm
) & 0x3;
4043 /* Emit one vertex from the geometry shader */
4044 static void si_llvm_emit_vertex(struct ac_shader_abi
*abi
,
4046 LLVMValueRef
*addrs
)
4048 struct si_shader_context
*ctx
= si_shader_context_from_abi(abi
);
4049 struct tgsi_shader_info
*info
= &ctx
->shader
->selector
->info
;
4050 struct lp_build_context
*uint
= &ctx
->bld_base
.uint_bld
;
4051 struct si_shader
*shader
= ctx
->shader
;
4052 struct lp_build_if_state if_state
;
4053 LLVMValueRef soffset
= LLVMGetParam(ctx
->main_fn
,
4054 ctx
->param_gs2vs_offset
);
4055 LLVMValueRef gs_next_vertex
;
4056 LLVMValueRef can_emit
;
4057 unsigned chan
, offset
;
4060 /* Write vertex attribute values to GSVS ring */
4061 gs_next_vertex
= LLVMBuildLoad(ctx
->ac
.builder
,
4062 ctx
->gs_next_vertex
[stream
],
4065 /* If this thread has already emitted the declared maximum number of
4066 * vertices, skip the write: excessive vertex emissions are not
4067 * supposed to have any effect.
4069 * If the shader has no writes to memory, kill it instead. This skips
4070 * further memory loads and may allow LLVM to skip to the end
4073 can_emit
= LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
, gs_next_vertex
,
4074 LLVMConstInt(ctx
->i32
,
4075 shader
->selector
->gs_max_out_vertices
, 0), "");
4077 bool use_kill
= !info
->writes_memory
;
4079 ac_build_kill_if_false(&ctx
->ac
, can_emit
);
4081 lp_build_if(&if_state
, &ctx
->gallivm
, can_emit
);
4085 for (i
= 0; i
< info
->num_outputs
; i
++) {
4086 for (chan
= 0; chan
< 4; chan
++) {
4087 if (!(info
->output_usagemask
[i
] & (1 << chan
)) ||
4088 ((info
->output_streams
[i
] >> (2 * chan
)) & 3) != stream
)
4091 LLVMValueRef out_val
= LLVMBuildLoad(ctx
->ac
.builder
, addrs
[4 * i
+ chan
], "");
4092 LLVMValueRef voffset
=
4093 LLVMConstInt(ctx
->i32
, offset
*
4094 shader
->selector
->gs_max_out_vertices
, 0);
4097 voffset
= lp_build_add(uint
, voffset
, gs_next_vertex
);
4098 voffset
= lp_build_mul_imm(uint
, voffset
, 4);
4100 out_val
= ac_to_integer(&ctx
->ac
, out_val
);
4102 ac_build_buffer_store_dword(&ctx
->ac
,
4103 ctx
->gsvs_ring
[stream
],
4105 voffset
, soffset
, 0,
4110 gs_next_vertex
= lp_build_add(uint
, gs_next_vertex
,
4113 LLVMBuildStore(ctx
->ac
.builder
, gs_next_vertex
, ctx
->gs_next_vertex
[stream
]);
4115 /* Signal vertex emission */
4116 ac_build_sendmsg(&ctx
->ac
, AC_SENDMSG_GS_OP_EMIT
| AC_SENDMSG_GS
| (stream
<< 8),
4117 si_get_gs_wave_id(ctx
));
4119 lp_build_endif(&if_state
);
4122 /* Emit one vertex from the geometry shader */
4123 static void si_tgsi_emit_vertex(
4124 const struct lp_build_tgsi_action
*action
,
4125 struct lp_build_tgsi_context
*bld_base
,
4126 struct lp_build_emit_data
*emit_data
)
4128 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4129 unsigned stream
= si_llvm_get_stream(bld_base
, emit_data
);
4131 si_llvm_emit_vertex(&ctx
->abi
, stream
, ctx
->outputs
[0]);
4134 /* Cut one primitive from the geometry shader */
4135 static void si_llvm_emit_primitive(
4136 const struct lp_build_tgsi_action
*action
,
4137 struct lp_build_tgsi_context
*bld_base
,
4138 struct lp_build_emit_data
*emit_data
)
4140 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4143 /* Signal primitive cut */
4144 stream
= si_llvm_get_stream(bld_base
, emit_data
);
4145 ac_build_sendmsg(&ctx
->ac
, AC_SENDMSG_GS_OP_CUT
| AC_SENDMSG_GS
| (stream
<< 8),
4146 si_get_gs_wave_id(ctx
));
4149 static void si_llvm_emit_barrier(const struct lp_build_tgsi_action
*action
,
4150 struct lp_build_tgsi_context
*bld_base
,
4151 struct lp_build_emit_data
*emit_data
)
4153 struct si_shader_context
*ctx
= si_shader_context(bld_base
);
4155 /* SI only (thanks to a hw bug workaround):
4156 * The real barrier instruction isn’t needed, because an entire patch
4157 * always fits into a single wave.
4159 if (ctx
->screen
->b
.chip_class
== SI
&&
4160 ctx
->type
== PIPE_SHADER_TESS_CTRL
) {
4161 si_emit_waitcnt(ctx
, LGKM_CNT
& VM_CNT
);
4165 lp_build_intrinsic(ctx
->ac
.builder
,
4166 "llvm.amdgcn.s.barrier",
4167 ctx
->voidt
, NULL
, 0, LP_FUNC_ATTR_CONVERGENT
);
4170 static const struct lp_build_tgsi_action interp_action
= {
4171 .fetch_args
= interp_fetch_args
,
4172 .emit
= build_interp_intrinsic
,
4175 static void si_create_function(struct si_shader_context
*ctx
,
4177 LLVMTypeRef
*returns
, unsigned num_returns
,
4178 struct si_function_info
*fninfo
,
4179 unsigned max_workgroup_size
)
4183 si_llvm_create_func(ctx
, name
, returns
, num_returns
,
4184 fninfo
->types
, fninfo
->num_params
);
4185 ctx
->return_value
= LLVMGetUndef(ctx
->return_type
);
4187 for (i
= 0; i
< fninfo
->num_sgpr_params
; ++i
) {
4188 LLVMValueRef P
= LLVMGetParam(ctx
->main_fn
, i
);
4190 /* The combination of:
4194 * allows the optimization passes to move loads and reduces
4195 * SGPR spilling significantly.
4197 if (LLVMGetTypeKind(LLVMTypeOf(P
)) == LLVMPointerTypeKind
) {
4198 lp_add_function_attr(ctx
->main_fn
, i
+ 1, LP_FUNC_ATTR_BYVAL
);
4199 lp_add_function_attr(ctx
->main_fn
, i
+ 1, LP_FUNC_ATTR_NOALIAS
);
4200 ac_add_attr_dereferenceable(P
, UINT64_MAX
);
4202 lp_add_function_attr(ctx
->main_fn
, i
+ 1, LP_FUNC_ATTR_INREG
);
4205 for (i
= 0; i
< fninfo
->num_params
; ++i
) {
4206 if (fninfo
->assign
[i
])
4207 *fninfo
->assign
[i
] = LLVMGetParam(ctx
->main_fn
, i
);
4210 if (max_workgroup_size
) {
4211 si_llvm_add_attribute(ctx
->main_fn
, "amdgpu-max-work-group-size",
4212 max_workgroup_size
);
4214 LLVMAddTargetDependentFunctionAttr(ctx
->main_fn
,
4215 "no-signed-zeros-fp-math",
4218 if (ctx
->screen
->b
.debug_flags
& DBG(UNSAFE_MATH
)) {
4219 /* These were copied from some LLVM test. */
4220 LLVMAddTargetDependentFunctionAttr(ctx
->main_fn
,
4221 "less-precise-fpmad",
4223 LLVMAddTargetDependentFunctionAttr(ctx
->main_fn
,
4226 LLVMAddTargetDependentFunctionAttr(ctx
->main_fn
,
4229 LLVMAddTargetDependentFunctionAttr(ctx
->main_fn
,
4235 static void declare_streamout_params(struct si_shader_context
*ctx
,
4236 struct pipe_stream_output_info
*so
,
4237 struct si_function_info
*fninfo
)
4241 /* Streamout SGPRs. */
4242 if (so
->num_outputs
) {
4243 if (ctx
->type
!= PIPE_SHADER_TESS_EVAL
)
4244 ctx
->param_streamout_config
= add_arg(fninfo
, ARG_SGPR
, ctx
->ac
.i32
);
4246 ctx
->param_streamout_config
= fninfo
->num_params
- 1;
4248 ctx
->param_streamout_write_index
= add_arg(fninfo
, ARG_SGPR
, ctx
->ac
.i32
);
4250 /* A streamout buffer offset is loaded if the stride is non-zero. */
4251 for (i
= 0; i
< 4; i
++) {
4255 ctx
->param_streamout_offset
[i
] = add_arg(fninfo
, ARG_SGPR
, ctx
->ac
.i32
);
4259 static unsigned si_get_max_workgroup_size(const struct si_shader
*shader
)
4261 switch (shader
->selector
->type
) {
4262 case PIPE_SHADER_TESS_CTRL
:
4263 /* Return this so that LLVM doesn't remove s_barrier
4264 * instructions on chips where we use s_barrier. */
4265 return shader
->selector
->screen
->b
.chip_class
>= CIK
? 128 : 64;
4267 case PIPE_SHADER_GEOMETRY
:
4268 return shader
->selector
->screen
->b
.chip_class
>= GFX9
? 128 : 64;
4270 case PIPE_SHADER_COMPUTE
:
4271 break; /* see below */
4277 const unsigned *properties
= shader
->selector
->info
.properties
;
4278 unsigned max_work_group_size
=
4279 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH
] *
4280 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT
] *
4281 properties
[TGSI_PROPERTY_CS_FIXED_BLOCK_DEPTH
];
4283 if (!max_work_group_size
) {
4284 /* This is a variable group size compute shader,
4285 * compile it for the maximum possible group size.
4287 max_work_group_size
= SI_MAX_VARIABLE_THREADS_PER_BLOCK
;
4289 return max_work_group_size
;
4292 static void declare_per_stage_desc_pointers(struct si_shader_context
*ctx
,
4293 struct si_function_info
*fninfo
,
4296 LLVMTypeRef const_shader_buf_type
;
4298 if (ctx
->shader
->selector
->info
.const_buffers_declared
== 1 &&
4299 ctx
->shader
->selector
->info
.shader_buffers_declared
== 0)
4300 const_shader_buf_type
= ctx
->f32
;
4302 const_shader_buf_type
= ctx
->v4i32
;
4304 unsigned const_and_shader_buffers
=
4305 add_arg(fninfo
, ARG_SGPR
,
4306 si_const_array(const_shader_buf_type
, 0));
4308 unsigned samplers_and_images
=
4309 add_arg(fninfo
, ARG_SGPR
,
4310 si_const_array(ctx
->v8i32
,
4311 SI_NUM_IMAGES
+ SI_NUM_SAMPLERS
* 2));
4313 if (assign_params
) {
4314 ctx
->param_const_and_shader_buffers
= const_and_shader_buffers
;
4315 ctx
->param_samplers_and_images
= samplers_and_images
;
4319 static void declare_global_desc_pointers(struct si_shader_context
*ctx
,
4320 struct si_function_info
*fninfo
)
4322 ctx
->param_rw_buffers
= add_arg(fninfo
, ARG_SGPR
,
4323 si_const_array(ctx
->v4i32
, SI_NUM_RW_BUFFERS
));
4324 ctx
->param_bindless_samplers_and_images
= add_arg(fninfo
, ARG_SGPR
,
4325 si_const_array(ctx
->v8i32
, 0));
4328 static void declare_vs_specific_input_sgprs(struct si_shader_context
*ctx
,
4329 struct si_function_info
*fninfo
)
4331 ctx
->param_vertex_buffers
= add_arg(fninfo
, ARG_SGPR
,
4332 si_const_array(ctx
->v4i32
, SI_NUM_VERTEX_BUFFERS
));
4333 add_arg_assign(fninfo
, ARG_SGPR
, ctx
->i32
, &ctx
->abi
.base_vertex
);
4334 add_arg_assign(fninfo
, ARG_SGPR
, ctx
->i32
, &ctx
->abi
.start_instance
);
4335 add_arg_assign(fninfo
, ARG_SGPR
, ctx
->i32
, &ctx
->abi
.draw_id
);
4336 ctx
->param_vs_state_bits
= add_arg(fninfo
, ARG_SGPR
, ctx
->i32
);
4339 static void declare_vs_input_vgprs(struct si_shader_context
*ctx
,
4340 struct si_function_info
*fninfo
,
4341 unsigned *num_prolog_vgprs
)
4343 struct si_shader
*shader
= ctx
->shader
;
4345 add_arg_assign(fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.vertex_id
);
4346 if (shader
->key
.as_ls
) {
4347 ctx
->param_rel_auto_id
= add_arg(fninfo
, ARG_VGPR
, ctx
->i32
);
4348 add_arg_assign(fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.instance_id
);
4350 add_arg_assign(fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.instance_id
);
4351 ctx
->param_vs_prim_id
= add_arg(fninfo
, ARG_VGPR
, ctx
->i32
);
4353 add_arg(fninfo
, ARG_VGPR
, ctx
->i32
); /* unused */
4355 if (!shader
->is_gs_copy_shader
) {
4356 /* Vertex load indices. */
4357 ctx
->param_vertex_index0
= fninfo
->num_params
;
4358 for (unsigned i
= 0; i
< shader
->selector
->info
.num_inputs
; i
++)
4359 add_arg(fninfo
, ARG_VGPR
, ctx
->i32
);
4360 *num_prolog_vgprs
+= shader
->selector
->info
.num_inputs
;
4364 static void declare_tes_input_vgprs(struct si_shader_context
*ctx
,
4365 struct si_function_info
*fninfo
)
4367 ctx
->param_tes_u
= add_arg(fninfo
, ARG_VGPR
, ctx
->f32
);
4368 ctx
->param_tes_v
= add_arg(fninfo
, ARG_VGPR
, ctx
->f32
);
4369 ctx
->param_tes_rel_patch_id
= add_arg(fninfo
, ARG_VGPR
, ctx
->i32
);
4370 ctx
->param_tes_patch_id
= add_arg(fninfo
, ARG_VGPR
, ctx
->i32
);
4374 /* Convenient merged shader definitions. */
4375 SI_SHADER_MERGED_VERTEX_TESSCTRL
= PIPE_SHADER_TYPES
,
4376 SI_SHADER_MERGED_VERTEX_OR_TESSEVAL_GEOMETRY
,
4379 static void create_function(struct si_shader_context
*ctx
)
4381 struct si_shader
*shader
= ctx
->shader
;
4382 struct si_function_info fninfo
;
4383 LLVMTypeRef returns
[16+32*4];
4384 unsigned i
, num_return_sgprs
;
4385 unsigned num_returns
= 0;
4386 unsigned num_prolog_vgprs
= 0;
4387 unsigned type
= ctx
->type
;
4388 unsigned vs_blit_property
=
4389 shader
->selector
->info
.properties
[TGSI_PROPERTY_VS_BLIT_SGPRS
];
4391 si_init_function_info(&fninfo
);
4393 /* Set MERGED shaders. */
4394 if (ctx
->screen
->b
.chip_class
>= GFX9
) {
4395 if (shader
->key
.as_ls
|| type
== PIPE_SHADER_TESS_CTRL
)
4396 type
= SI_SHADER_MERGED_VERTEX_TESSCTRL
; /* LS or HS */
4397 else if (shader
->key
.as_es
|| type
== PIPE_SHADER_GEOMETRY
)
4398 type
= SI_SHADER_MERGED_VERTEX_OR_TESSEVAL_GEOMETRY
;
4401 LLVMTypeRef v3i32
= LLVMVectorType(ctx
->i32
, 3);
4404 case PIPE_SHADER_VERTEX
:
4405 declare_global_desc_pointers(ctx
, &fninfo
);
4407 if (vs_blit_property
) {
4408 ctx
->param_vs_blit_inputs
= fninfo
.num_params
;
4409 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* i16 x1, y1 */
4410 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* i16 x2, y2 */
4411 add_arg(&fninfo
, ARG_SGPR
, ctx
->f32
); /* depth */
4413 if (vs_blit_property
== SI_VS_BLIT_SGPRS_POS_COLOR
) {
4414 add_arg(&fninfo
, ARG_SGPR
, ctx
->f32
); /* color0 */
4415 add_arg(&fninfo
, ARG_SGPR
, ctx
->f32
); /* color1 */
4416 add_arg(&fninfo
, ARG_SGPR
, ctx
->f32
); /* color2 */
4417 add_arg(&fninfo
, ARG_SGPR
, ctx
->f32
); /* color3 */
4418 } else if (vs_blit_property
== SI_VS_BLIT_SGPRS_POS_TEXCOORD
) {
4419 add_arg(&fninfo
, ARG_SGPR
, ctx
->f32
); /* texcoord.x1 */
4420 add_arg(&fninfo
, ARG_SGPR
, ctx
->f32
); /* texcoord.y1 */
4421 add_arg(&fninfo
, ARG_SGPR
, ctx
->f32
); /* texcoord.x2 */
4422 add_arg(&fninfo
, ARG_SGPR
, ctx
->f32
); /* texcoord.y2 */
4423 add_arg(&fninfo
, ARG_SGPR
, ctx
->f32
); /* texcoord.z */
4424 add_arg(&fninfo
, ARG_SGPR
, ctx
->f32
); /* texcoord.w */
4428 declare_vs_input_vgprs(ctx
, &fninfo
, &num_prolog_vgprs
);
4432 declare_per_stage_desc_pointers(ctx
, &fninfo
, true);
4433 declare_vs_specific_input_sgprs(ctx
, &fninfo
);
4435 if (shader
->key
.as_es
) {
4436 assert(!shader
->selector
->nir
);
4437 ctx
->param_es2gs_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4438 } else if (shader
->key
.as_ls
) {
4439 assert(!shader
->selector
->nir
);
4440 /* no extra parameters */
4442 if (shader
->is_gs_copy_shader
) {
4443 fninfo
.num_params
= ctx
->param_rw_buffers
+ 1;
4444 fninfo
.num_sgpr_params
= fninfo
.num_params
;
4447 /* The locations of the other parameters are assigned dynamically. */
4448 declare_streamout_params(ctx
, &shader
->selector
->so
,
4453 declare_vs_input_vgprs(ctx
, &fninfo
, &num_prolog_vgprs
);
4456 case PIPE_SHADER_TESS_CTRL
: /* SI-CI-VI */
4457 declare_global_desc_pointers(ctx
, &fninfo
);
4458 declare_per_stage_desc_pointers(ctx
, &fninfo
, true);
4459 ctx
->param_tcs_offchip_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4460 ctx
->param_tcs_out_lds_offsets
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4461 ctx
->param_tcs_out_lds_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4462 ctx
->param_vs_state_bits
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4463 ctx
->param_tcs_offchip_addr_base64k
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4464 ctx
->param_tcs_factor_addr_base64k
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4465 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4466 ctx
->param_tcs_factor_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4469 ctx
->param_tcs_patch_id
= add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
);
4470 ctx
->param_tcs_rel_ids
= add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
);
4472 /* param_tcs_offchip_offset and param_tcs_factor_offset are
4473 * placed after the user SGPRs.
4475 for (i
= 0; i
< GFX6_TCS_NUM_USER_SGPR
+ 2; i
++)
4476 returns
[num_returns
++] = ctx
->i32
; /* SGPRs */
4477 for (i
= 0; i
< 11; i
++)
4478 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
4481 case SI_SHADER_MERGED_VERTEX_TESSCTRL
:
4482 /* Merged stages have 8 system SGPRs at the beginning. */
4483 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* SPI_SHADER_USER_DATA_ADDR_LO_HS */
4484 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* SPI_SHADER_USER_DATA_ADDR_HI_HS */
4485 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4486 ctx
->param_merged_wave_info
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4487 ctx
->param_tcs_factor_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4488 ctx
->param_merged_scratch_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4489 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused */
4490 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused */
4492 declare_global_desc_pointers(ctx
, &fninfo
);
4493 declare_per_stage_desc_pointers(ctx
, &fninfo
,
4494 ctx
->type
== PIPE_SHADER_VERTEX
);
4495 declare_vs_specific_input_sgprs(ctx
, &fninfo
);
4497 ctx
->param_tcs_offchip_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4498 ctx
->param_tcs_out_lds_offsets
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4499 ctx
->param_tcs_out_lds_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4500 ctx
->param_tcs_offchip_addr_base64k
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4501 ctx
->param_tcs_factor_addr_base64k
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4502 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused */
4504 declare_per_stage_desc_pointers(ctx
, &fninfo
,
4505 ctx
->type
== PIPE_SHADER_TESS_CTRL
);
4507 /* VGPRs (first TCS, then VS) */
4508 ctx
->param_tcs_patch_id
= add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
);
4509 ctx
->param_tcs_rel_ids
= add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
);
4511 if (ctx
->type
== PIPE_SHADER_VERTEX
) {
4512 declare_vs_input_vgprs(ctx
, &fninfo
,
4515 /* LS return values are inputs to the TCS main shader part. */
4516 for (i
= 0; i
< 8 + GFX9_TCS_NUM_USER_SGPR
; i
++)
4517 returns
[num_returns
++] = ctx
->i32
; /* SGPRs */
4518 for (i
= 0; i
< 2; i
++)
4519 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
4521 /* TCS return values are inputs to the TCS epilog.
4523 * param_tcs_offchip_offset, param_tcs_factor_offset,
4524 * param_tcs_offchip_layout, and param_rw_buffers
4525 * should be passed to the epilog.
4527 for (i
= 0; i
<= 8 + GFX9_SGPR_TCS_FACTOR_ADDR_BASE64K
; i
++)
4528 returns
[num_returns
++] = ctx
->i32
; /* SGPRs */
4529 for (i
= 0; i
< 11; i
++)
4530 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
4534 case SI_SHADER_MERGED_VERTEX_OR_TESSEVAL_GEOMETRY
:
4535 /* Merged stages have 8 system SGPRs at the beginning. */
4536 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused (SPI_SHADER_USER_DATA_ADDR_LO_GS) */
4537 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused (SPI_SHADER_USER_DATA_ADDR_HI_GS) */
4538 ctx
->param_gs2vs_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4539 ctx
->param_merged_wave_info
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4540 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4541 ctx
->param_merged_scratch_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4542 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused (SPI_SHADER_PGM_LO/HI_GS << 8) */
4543 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused (SPI_SHADER_PGM_LO/HI_GS >> 24) */
4545 declare_global_desc_pointers(ctx
, &fninfo
);
4546 declare_per_stage_desc_pointers(ctx
, &fninfo
,
4547 (ctx
->type
== PIPE_SHADER_VERTEX
||
4548 ctx
->type
== PIPE_SHADER_TESS_EVAL
));
4549 if (ctx
->type
== PIPE_SHADER_VERTEX
) {
4550 declare_vs_specific_input_sgprs(ctx
, &fninfo
);
4552 /* TESS_EVAL (and also GEOMETRY):
4553 * Declare as many input SGPRs as the VS has. */
4554 ctx
->param_tcs_offchip_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4555 ctx
->param_tcs_offchip_addr_base64k
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4556 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused */
4557 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused */
4558 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused */
4559 ctx
->param_vs_state_bits
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* unused */
4562 declare_per_stage_desc_pointers(ctx
, &fninfo
,
4563 ctx
->type
== PIPE_SHADER_GEOMETRY
);
4565 /* VGPRs (first GS, then VS/TES) */
4566 ctx
->param_gs_vtx01_offset
= add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
);
4567 ctx
->param_gs_vtx23_offset
= add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
);
4568 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.gs_prim_id
);
4569 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.gs_invocation_id
);
4570 ctx
->param_gs_vtx45_offset
= add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
);
4572 if (ctx
->type
== PIPE_SHADER_VERTEX
) {
4573 declare_vs_input_vgprs(ctx
, &fninfo
,
4575 } else if (ctx
->type
== PIPE_SHADER_TESS_EVAL
) {
4576 declare_tes_input_vgprs(ctx
, &fninfo
);
4579 if (ctx
->type
== PIPE_SHADER_VERTEX
||
4580 ctx
->type
== PIPE_SHADER_TESS_EVAL
) {
4581 /* ES return values are inputs to GS. */
4582 for (i
= 0; i
< 8 + GFX9_GS_NUM_USER_SGPR
; i
++)
4583 returns
[num_returns
++] = ctx
->i32
; /* SGPRs */
4584 for (i
= 0; i
< 5; i
++)
4585 returns
[num_returns
++] = ctx
->f32
; /* VGPRs */
4589 case PIPE_SHADER_TESS_EVAL
:
4590 declare_global_desc_pointers(ctx
, &fninfo
);
4591 declare_per_stage_desc_pointers(ctx
, &fninfo
, true);
4592 ctx
->param_tcs_offchip_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4593 ctx
->param_tcs_offchip_addr_base64k
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4595 if (shader
->key
.as_es
) {
4596 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4597 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4598 ctx
->param_es2gs_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4600 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4601 declare_streamout_params(ctx
, &shader
->selector
->so
,
4603 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4607 declare_tes_input_vgprs(ctx
, &fninfo
);
4610 case PIPE_SHADER_GEOMETRY
:
4611 declare_global_desc_pointers(ctx
, &fninfo
);
4612 declare_per_stage_desc_pointers(ctx
, &fninfo
, true);
4613 ctx
->param_gs2vs_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4614 ctx
->param_gs_wave_id
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4617 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->gs_vtx_offset
[0]);
4618 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->gs_vtx_offset
[1]);
4619 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.gs_prim_id
);
4620 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->gs_vtx_offset
[2]);
4621 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->gs_vtx_offset
[3]);
4622 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->gs_vtx_offset
[4]);
4623 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->gs_vtx_offset
[5]);
4624 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &ctx
->abi
.gs_invocation_id
);
4627 case PIPE_SHADER_FRAGMENT
:
4628 declare_global_desc_pointers(ctx
, &fninfo
);
4629 declare_per_stage_desc_pointers(ctx
, &fninfo
, true);
4630 add_arg_checked(&fninfo
, ARG_SGPR
, ctx
->f32
, SI_PARAM_ALPHA_REF
);
4631 add_arg_checked(&fninfo
, ARG_SGPR
, ctx
->i32
, SI_PARAM_PRIM_MASK
);
4633 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->v2i32
, SI_PARAM_PERSP_SAMPLE
);
4634 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->v2i32
, SI_PARAM_PERSP_CENTER
);
4635 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->v2i32
, SI_PARAM_PERSP_CENTROID
);
4636 add_arg_checked(&fninfo
, ARG_VGPR
, v3i32
, SI_PARAM_PERSP_PULL_MODEL
);
4637 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->v2i32
, SI_PARAM_LINEAR_SAMPLE
);
4638 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->v2i32
, SI_PARAM_LINEAR_CENTER
);
4639 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->v2i32
, SI_PARAM_LINEAR_CENTROID
);
4640 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->f32
, SI_PARAM_LINE_STIPPLE_TEX
);
4641 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->f32
,
4642 &ctx
->abi
.frag_pos
[0], SI_PARAM_POS_X_FLOAT
);
4643 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->f32
,
4644 &ctx
->abi
.frag_pos
[1], SI_PARAM_POS_Y_FLOAT
);
4645 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->f32
,
4646 &ctx
->abi
.frag_pos
[2], SI_PARAM_POS_Z_FLOAT
);
4647 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->f32
,
4648 &ctx
->abi
.frag_pos
[3], SI_PARAM_POS_W_FLOAT
);
4649 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->i32
,
4650 &ctx
->abi
.front_face
, SI_PARAM_FRONT_FACE
);
4651 shader
->info
.face_vgpr_index
= 20;
4652 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->i32
,
4653 &ctx
->abi
.ancillary
, SI_PARAM_ANCILLARY
);
4654 shader
->info
.ancillary_vgpr_index
= 21;
4655 add_arg_assign_checked(&fninfo
, ARG_VGPR
, ctx
->f32
,
4656 &ctx
->abi
.sample_coverage
, SI_PARAM_SAMPLE_COVERAGE
);
4657 add_arg_checked(&fninfo
, ARG_VGPR
, ctx
->i32
, SI_PARAM_POS_FIXED_PT
);
4659 /* Color inputs from the prolog. */
4660 if (shader
->selector
->info
.colors_read
) {
4661 unsigned num_color_elements
=
4662 util_bitcount(shader
->selector
->info
.colors_read
);
4664 assert(fninfo
.num_params
+ num_color_elements
<= ARRAY_SIZE(fninfo
.types
));
4665 for (i
= 0; i
< num_color_elements
; i
++)
4666 add_arg(&fninfo
, ARG_VGPR
, ctx
->f32
);
4668 num_prolog_vgprs
+= num_color_elements
;
4671 /* Outputs for the epilog. */
4672 num_return_sgprs
= SI_SGPR_ALPHA_REF
+ 1;
4675 util_bitcount(shader
->selector
->info
.colors_written
) * 4 +
4676 shader
->selector
->info
.writes_z
+
4677 shader
->selector
->info
.writes_stencil
+
4678 shader
->selector
->info
.writes_samplemask
+
4679 1 /* SampleMaskIn */;
4681 num_returns
= MAX2(num_returns
,
4683 PS_EPILOG_SAMPLEMASK_MIN_LOC
+ 1);
4685 for (i
= 0; i
< num_return_sgprs
; i
++)
4686 returns
[i
] = ctx
->i32
;
4687 for (; i
< num_returns
; i
++)
4688 returns
[i
] = ctx
->f32
;
4691 case PIPE_SHADER_COMPUTE
:
4692 declare_global_desc_pointers(ctx
, &fninfo
);
4693 declare_per_stage_desc_pointers(ctx
, &fninfo
, true);
4694 if (shader
->selector
->info
.uses_grid_size
)
4695 ctx
->param_grid_size
= add_arg(&fninfo
, ARG_SGPR
, v3i32
);
4696 if (shader
->selector
->info
.uses_block_size
)
4697 ctx
->param_block_size
= add_arg(&fninfo
, ARG_SGPR
, v3i32
);
4699 for (i
= 0; i
< 3; i
++) {
4700 ctx
->param_block_id
[i
] = -1;
4701 if (shader
->selector
->info
.uses_block_id
[i
])
4702 ctx
->param_block_id
[i
] = add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
4705 ctx
->param_thread_id
= add_arg(&fninfo
, ARG_VGPR
, v3i32
);
4708 assert(0 && "unimplemented shader");
4712 si_create_function(ctx
, "main", returns
, num_returns
, &fninfo
,
4713 si_get_max_workgroup_size(shader
));
4715 /* Reserve register locations for VGPR inputs the PS prolog may need. */
4716 if (ctx
->type
== PIPE_SHADER_FRAGMENT
&&
4717 ctx
->separate_prolog
) {
4718 si_llvm_add_attribute(ctx
->main_fn
,
4719 "InitialPSInputAddr",
4720 S_0286D0_PERSP_SAMPLE_ENA(1) |
4721 S_0286D0_PERSP_CENTER_ENA(1) |
4722 S_0286D0_PERSP_CENTROID_ENA(1) |
4723 S_0286D0_LINEAR_SAMPLE_ENA(1) |
4724 S_0286D0_LINEAR_CENTER_ENA(1) |
4725 S_0286D0_LINEAR_CENTROID_ENA(1) |
4726 S_0286D0_FRONT_FACE_ENA(1) |
4727 S_0286D0_ANCILLARY_ENA(1) |
4728 S_0286D0_POS_FIXED_PT_ENA(1));
4731 shader
->info
.num_input_sgprs
= 0;
4732 shader
->info
.num_input_vgprs
= 0;
4734 for (i
= 0; i
< fninfo
.num_sgpr_params
; ++i
)
4735 shader
->info
.num_input_sgprs
+= ac_get_type_size(fninfo
.types
[i
]) / 4;
4737 for (; i
< fninfo
.num_params
; ++i
)
4738 shader
->info
.num_input_vgprs
+= ac_get_type_size(fninfo
.types
[i
]) / 4;
4740 assert(shader
->info
.num_input_vgprs
>= num_prolog_vgprs
);
4741 shader
->info
.num_input_vgprs
-= num_prolog_vgprs
;
4743 if (shader
->key
.as_ls
||
4744 ctx
->type
== PIPE_SHADER_TESS_CTRL
||
4745 /* GFX9 has the ESGS ring buffer in LDS. */
4746 (ctx
->screen
->b
.chip_class
>= GFX9
&&
4747 (shader
->key
.as_es
||
4748 ctx
->type
== PIPE_SHADER_GEOMETRY
)))
4749 ac_declare_lds_as_pointer(&ctx
->ac
);
4753 * Load ESGS and GSVS ring buffer resource descriptors and save the variables
4756 static void preload_ring_buffers(struct si_shader_context
*ctx
)
4758 LLVMBuilderRef builder
= ctx
->ac
.builder
;
4760 LLVMValueRef buf_ptr
= LLVMGetParam(ctx
->main_fn
,
4761 ctx
->param_rw_buffers
);
4763 if (ctx
->screen
->b
.chip_class
<= VI
&&
4764 (ctx
->shader
->key
.as_es
|| ctx
->type
== PIPE_SHADER_GEOMETRY
)) {
4766 ctx
->type
== PIPE_SHADER_GEOMETRY
? SI_GS_RING_ESGS
4768 LLVMValueRef offset
= LLVMConstInt(ctx
->i32
, ring
, 0);
4771 ac_build_load_to_sgpr(&ctx
->ac
, buf_ptr
, offset
);
4774 if (ctx
->shader
->is_gs_copy_shader
) {
4775 LLVMValueRef offset
= LLVMConstInt(ctx
->i32
, SI_RING_GSVS
, 0);
4778 ac_build_load_to_sgpr(&ctx
->ac
, buf_ptr
, offset
);
4779 } else if (ctx
->type
== PIPE_SHADER_GEOMETRY
) {
4780 const struct si_shader_selector
*sel
= ctx
->shader
->selector
;
4781 LLVMValueRef offset
= LLVMConstInt(ctx
->i32
, SI_RING_GSVS
, 0);
4782 LLVMValueRef base_ring
;
4784 base_ring
= ac_build_load_to_sgpr(&ctx
->ac
, buf_ptr
, offset
);
4786 /* The conceptual layout of the GSVS ring is
4787 * v0c0 .. vLv0 v0c1 .. vLc1 ..
4788 * but the real memory layout is swizzled across
4790 * t0v0c0 .. t15v0c0 t0v1c0 .. t15v1c0 ... t15vLcL
4792 * Override the buffer descriptor accordingly.
4794 LLVMTypeRef v2i64
= LLVMVectorType(ctx
->i64
, 2);
4795 uint64_t stream_offset
= 0;
4797 for (unsigned stream
= 0; stream
< 4; ++stream
) {
4798 unsigned num_components
;
4800 unsigned num_records
;
4801 LLVMValueRef ring
, tmp
;
4803 num_components
= sel
->info
.num_stream_output_components
[stream
];
4804 if (!num_components
)
4807 stride
= 4 * num_components
* sel
->gs_max_out_vertices
;
4809 /* Limit on the stride field for <= CIK. */
4810 assert(stride
< (1 << 14));
4814 ring
= LLVMBuildBitCast(builder
, base_ring
, v2i64
, "");
4815 tmp
= LLVMBuildExtractElement(builder
, ring
, ctx
->i32_0
, "");
4816 tmp
= LLVMBuildAdd(builder
, tmp
,
4817 LLVMConstInt(ctx
->i64
,
4818 stream_offset
, 0), "");
4819 stream_offset
+= stride
* 64;
4821 ring
= LLVMBuildInsertElement(builder
, ring
, tmp
, ctx
->i32_0
, "");
4822 ring
= LLVMBuildBitCast(builder
, ring
, ctx
->v4i32
, "");
4823 tmp
= LLVMBuildExtractElement(builder
, ring
, ctx
->i32_1
, "");
4824 tmp
= LLVMBuildOr(builder
, tmp
,
4825 LLVMConstInt(ctx
->i32
,
4826 S_008F04_STRIDE(stride
) |
4827 S_008F04_SWIZZLE_ENABLE(1), 0), "");
4828 ring
= LLVMBuildInsertElement(builder
, ring
, tmp
, ctx
->i32_1
, "");
4829 ring
= LLVMBuildInsertElement(builder
, ring
,
4830 LLVMConstInt(ctx
->i32
, num_records
, 0),
4831 LLVMConstInt(ctx
->i32
, 2, 0), "");
4832 ring
= LLVMBuildInsertElement(builder
, ring
,
4833 LLVMConstInt(ctx
->i32
,
4834 S_008F0C_DST_SEL_X(V_008F0C_SQ_SEL_X
) |
4835 S_008F0C_DST_SEL_Y(V_008F0C_SQ_SEL_Y
) |
4836 S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z
) |
4837 S_008F0C_DST_SEL_W(V_008F0C_SQ_SEL_W
) |
4838 S_008F0C_NUM_FORMAT(V_008F0C_BUF_NUM_FORMAT_FLOAT
) |
4839 S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32
) |
4840 S_008F0C_ELEMENT_SIZE(1) | /* element_size = 4 (bytes) */
4841 S_008F0C_INDEX_STRIDE(1) | /* index_stride = 16 (elements) */
4842 S_008F0C_ADD_TID_ENABLE(1),
4844 LLVMConstInt(ctx
->i32
, 3, 0), "");
4846 ctx
->gsvs_ring
[stream
] = ring
;
4851 static void si_llvm_emit_polygon_stipple(struct si_shader_context
*ctx
,
4852 LLVMValueRef param_rw_buffers
,
4853 unsigned param_pos_fixed_pt
)
4855 LLVMBuilderRef builder
= ctx
->ac
.builder
;
4856 LLVMValueRef slot
, desc
, offset
, row
, bit
, address
[2];
4858 /* Use the fixed-point gl_FragCoord input.
4859 * Since the stipple pattern is 32x32 and it repeats, just get 5 bits
4860 * per coordinate to get the repeating effect.
4862 address
[0] = unpack_param(ctx
, param_pos_fixed_pt
, 0, 5);
4863 address
[1] = unpack_param(ctx
, param_pos_fixed_pt
, 16, 5);
4865 /* Load the buffer descriptor. */
4866 slot
= LLVMConstInt(ctx
->i32
, SI_PS_CONST_POLY_STIPPLE
, 0);
4867 desc
= ac_build_load_to_sgpr(&ctx
->ac
, param_rw_buffers
, slot
);
4869 /* The stipple pattern is 32x32, each row has 32 bits. */
4870 offset
= LLVMBuildMul(builder
, address
[1],
4871 LLVMConstInt(ctx
->i32
, 4, 0), "");
4872 row
= buffer_load_const(ctx
, desc
, offset
);
4873 row
= ac_to_integer(&ctx
->ac
, row
);
4874 bit
= LLVMBuildLShr(builder
, row
, address
[0], "");
4875 bit
= LLVMBuildTrunc(builder
, bit
, ctx
->i1
, "");
4876 ac_build_kill_if_false(&ctx
->ac
, bit
);
4879 void si_shader_binary_read_config(struct ac_shader_binary
*binary
,
4880 struct si_shader_config
*conf
,
4881 unsigned symbol_offset
)
4884 const unsigned char *config
=
4885 ac_shader_binary_config_start(binary
, symbol_offset
);
4886 bool really_needs_scratch
= false;
4888 /* LLVM adds SGPR spills to the scratch size.
4889 * Find out if we really need the scratch buffer.
4891 for (i
= 0; i
< binary
->reloc_count
; i
++) {
4892 const struct ac_shader_reloc
*reloc
= &binary
->relocs
[i
];
4894 if (!strcmp(scratch_rsrc_dword0_symbol
, reloc
->name
) ||
4895 !strcmp(scratch_rsrc_dword1_symbol
, reloc
->name
)) {
4896 really_needs_scratch
= true;
4901 /* XXX: We may be able to emit some of these values directly rather than
4902 * extracting fields to be emitted later.
4905 for (i
= 0; i
< binary
->config_size_per_symbol
; i
+= 8) {
4906 unsigned reg
= util_le32_to_cpu(*(uint32_t*)(config
+ i
));
4907 unsigned value
= util_le32_to_cpu(*(uint32_t*)(config
+ i
+ 4));
4909 case R_00B028_SPI_SHADER_PGM_RSRC1_PS
:
4910 case R_00B128_SPI_SHADER_PGM_RSRC1_VS
:
4911 case R_00B228_SPI_SHADER_PGM_RSRC1_GS
:
4912 case R_00B428_SPI_SHADER_PGM_RSRC1_HS
:
4913 case R_00B848_COMPUTE_PGM_RSRC1
:
4914 conf
->num_sgprs
= MAX2(conf
->num_sgprs
, (G_00B028_SGPRS(value
) + 1) * 8);
4915 conf
->num_vgprs
= MAX2(conf
->num_vgprs
, (G_00B028_VGPRS(value
) + 1) * 4);
4916 conf
->float_mode
= G_00B028_FLOAT_MODE(value
);
4917 conf
->rsrc1
= value
;
4919 case R_00B02C_SPI_SHADER_PGM_RSRC2_PS
:
4920 conf
->lds_size
= MAX2(conf
->lds_size
, G_00B02C_EXTRA_LDS_SIZE(value
));
4922 case R_00B84C_COMPUTE_PGM_RSRC2
:
4923 conf
->lds_size
= MAX2(conf
->lds_size
, G_00B84C_LDS_SIZE(value
));
4924 conf
->rsrc2
= value
;
4926 case R_0286CC_SPI_PS_INPUT_ENA
:
4927 conf
->spi_ps_input_ena
= value
;
4929 case R_0286D0_SPI_PS_INPUT_ADDR
:
4930 conf
->spi_ps_input_addr
= value
;
4932 case R_0286E8_SPI_TMPRING_SIZE
:
4933 case R_00B860_COMPUTE_TMPRING_SIZE
:
4934 /* WAVESIZE is in units of 256 dwords. */
4935 if (really_needs_scratch
)
4936 conf
->scratch_bytes_per_wave
=
4937 G_00B860_WAVESIZE(value
) * 256 * 4;
4939 case 0x4: /* SPILLED_SGPRS */
4940 conf
->spilled_sgprs
= value
;
4942 case 0x8: /* SPILLED_VGPRS */
4943 conf
->spilled_vgprs
= value
;
4947 static bool printed
;
4950 fprintf(stderr
, "Warning: LLVM emitted unknown "
4951 "config register: 0x%x\n", reg
);
4959 if (!conf
->spi_ps_input_addr
)
4960 conf
->spi_ps_input_addr
= conf
->spi_ps_input_ena
;
4963 void si_shader_apply_scratch_relocs(struct si_shader
*shader
,
4964 uint64_t scratch_va
)
4967 uint32_t scratch_rsrc_dword0
= scratch_va
;
4968 uint32_t scratch_rsrc_dword1
=
4969 S_008F04_BASE_ADDRESS_HI(scratch_va
>> 32);
4971 /* Enable scratch coalescing. */
4972 scratch_rsrc_dword1
|= S_008F04_SWIZZLE_ENABLE(1);
4974 for (i
= 0 ; i
< shader
->binary
.reloc_count
; i
++) {
4975 const struct ac_shader_reloc
*reloc
=
4976 &shader
->binary
.relocs
[i
];
4977 if (!strcmp(scratch_rsrc_dword0_symbol
, reloc
->name
)) {
4978 util_memcpy_cpu_to_le32(shader
->binary
.code
+ reloc
->offset
,
4979 &scratch_rsrc_dword0
, 4);
4980 } else if (!strcmp(scratch_rsrc_dword1_symbol
, reloc
->name
)) {
4981 util_memcpy_cpu_to_le32(shader
->binary
.code
+ reloc
->offset
,
4982 &scratch_rsrc_dword1
, 4);
4987 static unsigned si_get_shader_binary_size(const struct si_shader
*shader
)
4989 unsigned size
= shader
->binary
.code_size
;
4992 size
+= shader
->prolog
->binary
.code_size
;
4993 if (shader
->previous_stage
)
4994 size
+= shader
->previous_stage
->binary
.code_size
;
4995 if (shader
->prolog2
)
4996 size
+= shader
->prolog2
->binary
.code_size
;
4998 size
+= shader
->epilog
->binary
.code_size
;
5002 int si_shader_binary_upload(struct si_screen
*sscreen
, struct si_shader
*shader
)
5004 const struct ac_shader_binary
*prolog
=
5005 shader
->prolog
? &shader
->prolog
->binary
: NULL
;
5006 const struct ac_shader_binary
*previous_stage
=
5007 shader
->previous_stage
? &shader
->previous_stage
->binary
: NULL
;
5008 const struct ac_shader_binary
*prolog2
=
5009 shader
->prolog2
? &shader
->prolog2
->binary
: NULL
;
5010 const struct ac_shader_binary
*epilog
=
5011 shader
->epilog
? &shader
->epilog
->binary
: NULL
;
5012 const struct ac_shader_binary
*mainb
= &shader
->binary
;
5013 unsigned bo_size
= si_get_shader_binary_size(shader
) +
5014 (!epilog
? mainb
->rodata_size
: 0);
5017 assert(!prolog
|| !prolog
->rodata_size
);
5018 assert(!previous_stage
|| !previous_stage
->rodata_size
);
5019 assert(!prolog2
|| !prolog2
->rodata_size
);
5020 assert((!prolog
&& !previous_stage
&& !prolog2
&& !epilog
) ||
5021 !mainb
->rodata_size
);
5022 assert(!epilog
|| !epilog
->rodata_size
);
5024 r600_resource_reference(&shader
->bo
, NULL
);
5025 shader
->bo
= (struct r600_resource
*)
5026 pipe_buffer_create(&sscreen
->b
.b
, 0,
5027 PIPE_USAGE_IMMUTABLE
,
5028 align(bo_size
, SI_CPDMA_ALIGNMENT
));
5033 ptr
= sscreen
->b
.ws
->buffer_map(shader
->bo
->buf
, NULL
,
5034 PIPE_TRANSFER_READ_WRITE
|
5035 PIPE_TRANSFER_UNSYNCHRONIZED
);
5037 /* Don't use util_memcpy_cpu_to_le32. LLVM binaries are
5038 * endian-independent. */
5040 memcpy(ptr
, prolog
->code
, prolog
->code_size
);
5041 ptr
+= prolog
->code_size
;
5043 if (previous_stage
) {
5044 memcpy(ptr
, previous_stage
->code
, previous_stage
->code_size
);
5045 ptr
+= previous_stage
->code_size
;
5048 memcpy(ptr
, prolog2
->code
, prolog2
->code_size
);
5049 ptr
+= prolog2
->code_size
;
5052 memcpy(ptr
, mainb
->code
, mainb
->code_size
);
5053 ptr
+= mainb
->code_size
;
5056 memcpy(ptr
, epilog
->code
, epilog
->code_size
);
5057 else if (mainb
->rodata_size
> 0)
5058 memcpy(ptr
, mainb
->rodata
, mainb
->rodata_size
);
5060 sscreen
->b
.ws
->buffer_unmap(shader
->bo
->buf
);
5064 static void si_shader_dump_disassembly(const struct ac_shader_binary
*binary
,
5065 struct pipe_debug_callback
*debug
,
5066 const char *name
, FILE *file
)
5071 if (binary
->disasm_string
) {
5072 fprintf(file
, "Shader %s disassembly:\n", name
);
5073 fprintf(file
, "%s", binary
->disasm_string
);
5075 if (debug
&& debug
->debug_message
) {
5076 /* Very long debug messages are cut off, so send the
5077 * disassembly one line at a time. This causes more
5078 * overhead, but on the plus side it simplifies
5079 * parsing of resulting logs.
5081 pipe_debug_message(debug
, SHADER_INFO
,
5082 "Shader Disassembly Begin");
5084 line
= binary
->disasm_string
;
5086 p
= util_strchrnul(line
, '\n');
5090 pipe_debug_message(debug
, SHADER_INFO
,
5091 "%.*s", count
, line
);
5099 pipe_debug_message(debug
, SHADER_INFO
,
5100 "Shader Disassembly End");
5103 fprintf(file
, "Shader %s binary:\n", name
);
5104 for (i
= 0; i
< binary
->code_size
; i
+= 4) {
5105 fprintf(file
, "@0x%x: %02x%02x%02x%02x\n", i
,
5106 binary
->code
[i
+ 3], binary
->code
[i
+ 2],
5107 binary
->code
[i
+ 1], binary
->code
[i
]);
5112 static void si_shader_dump_stats(struct si_screen
*sscreen
,
5113 const struct si_shader
*shader
,
5114 struct pipe_debug_callback
*debug
,
5117 bool check_debug_option
)
5119 const struct si_shader_config
*conf
= &shader
->config
;
5120 unsigned num_inputs
= shader
->selector
? shader
->selector
->info
.num_inputs
: 0;
5121 unsigned code_size
= si_get_shader_binary_size(shader
);
5122 unsigned lds_increment
= sscreen
->b
.chip_class
>= CIK
? 512 : 256;
5123 unsigned lds_per_wave
= 0;
5124 unsigned max_simd_waves
;
5126 switch (sscreen
->b
.family
) {
5127 /* These always have 8 waves: */
5128 case CHIP_POLARIS10
:
5129 case CHIP_POLARIS11
:
5130 case CHIP_POLARIS12
:
5134 max_simd_waves
= 10;
5137 /* Compute LDS usage for PS. */
5138 switch (processor
) {
5139 case PIPE_SHADER_FRAGMENT
:
5140 /* The minimum usage per wave is (num_inputs * 48). The maximum
5141 * usage is (num_inputs * 48 * 16).
5142 * We can get anything in between and it varies between waves.
5144 * The 48 bytes per input for a single primitive is equal to
5145 * 4 bytes/component * 4 components/input * 3 points.
5147 * Other stages don't know the size at compile time or don't
5148 * allocate LDS per wave, but instead they do it per thread group.
5150 lds_per_wave
= conf
->lds_size
* lds_increment
+
5151 align(num_inputs
* 48, lds_increment
);
5153 case PIPE_SHADER_COMPUTE
:
5154 if (shader
->selector
) {
5155 unsigned max_workgroup_size
=
5156 si_get_max_workgroup_size(shader
);
5157 lds_per_wave
= (conf
->lds_size
* lds_increment
) /
5158 DIV_ROUND_UP(max_workgroup_size
, 64);
5163 /* Compute the per-SIMD wave counts. */
5164 if (conf
->num_sgprs
) {
5165 if (sscreen
->b
.chip_class
>= VI
)
5166 max_simd_waves
= MIN2(max_simd_waves
, 800 / conf
->num_sgprs
);
5168 max_simd_waves
= MIN2(max_simd_waves
, 512 / conf
->num_sgprs
);
5171 if (conf
->num_vgprs
)
5172 max_simd_waves
= MIN2(max_simd_waves
, 256 / conf
->num_vgprs
);
5174 /* LDS is 64KB per CU (4 SIMDs), which is 16KB per SIMD (usage above
5175 * 16KB makes some SIMDs unoccupied). */
5177 max_simd_waves
= MIN2(max_simd_waves
, 16384 / lds_per_wave
);
5179 if (!check_debug_option
||
5180 si_can_dump_shader(&sscreen
->b
, processor
)) {
5181 if (processor
== PIPE_SHADER_FRAGMENT
) {
5182 fprintf(file
, "*** SHADER CONFIG ***\n"
5183 "SPI_PS_INPUT_ADDR = 0x%04x\n"
5184 "SPI_PS_INPUT_ENA = 0x%04x\n",
5185 conf
->spi_ps_input_addr
, conf
->spi_ps_input_ena
);
5188 fprintf(file
, "*** SHADER STATS ***\n"
5191 "Spilled SGPRs: %d\n"
5192 "Spilled VGPRs: %d\n"
5193 "Private memory VGPRs: %d\n"
5194 "Code Size: %d bytes\n"
5196 "Scratch: %d bytes per wave\n"
5198 "********************\n\n\n",
5199 conf
->num_sgprs
, conf
->num_vgprs
,
5200 conf
->spilled_sgprs
, conf
->spilled_vgprs
,
5201 conf
->private_mem_vgprs
, code_size
,
5202 conf
->lds_size
, conf
->scratch_bytes_per_wave
,
5206 pipe_debug_message(debug
, SHADER_INFO
,
5207 "Shader Stats: SGPRS: %d VGPRS: %d Code Size: %d "
5208 "LDS: %d Scratch: %d Max Waves: %d Spilled SGPRs: %d "
5209 "Spilled VGPRs: %d PrivMem VGPRs: %d",
5210 conf
->num_sgprs
, conf
->num_vgprs
, code_size
,
5211 conf
->lds_size
, conf
->scratch_bytes_per_wave
,
5212 max_simd_waves
, conf
->spilled_sgprs
,
5213 conf
->spilled_vgprs
, conf
->private_mem_vgprs
);
5216 const char *si_get_shader_name(const struct si_shader
*shader
, unsigned processor
)
5218 switch (processor
) {
5219 case PIPE_SHADER_VERTEX
:
5220 if (shader
->key
.as_es
)
5221 return "Vertex Shader as ES";
5222 else if (shader
->key
.as_ls
)
5223 return "Vertex Shader as LS";
5225 return "Vertex Shader as VS";
5226 case PIPE_SHADER_TESS_CTRL
:
5227 return "Tessellation Control Shader";
5228 case PIPE_SHADER_TESS_EVAL
:
5229 if (shader
->key
.as_es
)
5230 return "Tessellation Evaluation Shader as ES";
5232 return "Tessellation Evaluation Shader as VS";
5233 case PIPE_SHADER_GEOMETRY
:
5234 if (shader
->is_gs_copy_shader
)
5235 return "GS Copy Shader as VS";
5237 return "Geometry Shader";
5238 case PIPE_SHADER_FRAGMENT
:
5239 return "Pixel Shader";
5240 case PIPE_SHADER_COMPUTE
:
5241 return "Compute Shader";
5243 return "Unknown Shader";
5247 void si_shader_dump(struct si_screen
*sscreen
, const struct si_shader
*shader
,
5248 struct pipe_debug_callback
*debug
, unsigned processor
,
5249 FILE *file
, bool check_debug_option
)
5251 if (!check_debug_option
||
5252 si_can_dump_shader(&sscreen
->b
, processor
))
5253 si_dump_shader_key(processor
, shader
, file
);
5255 if (!check_debug_option
&& shader
->binary
.llvm_ir_string
) {
5256 if (shader
->previous_stage
&&
5257 shader
->previous_stage
->binary
.llvm_ir_string
) {
5258 fprintf(file
, "\n%s - previous stage - LLVM IR:\n\n",
5259 si_get_shader_name(shader
, processor
));
5260 fprintf(file
, "%s\n", shader
->previous_stage
->binary
.llvm_ir_string
);
5263 fprintf(file
, "\n%s - main shader part - LLVM IR:\n\n",
5264 si_get_shader_name(shader
, processor
));
5265 fprintf(file
, "%s\n", shader
->binary
.llvm_ir_string
);
5268 if (!check_debug_option
||
5269 (si_can_dump_shader(&sscreen
->b
, processor
) &&
5270 !(sscreen
->b
.debug_flags
& DBG(NO_ASM
)))) {
5271 fprintf(file
, "\n%s:\n", si_get_shader_name(shader
, processor
));
5274 si_shader_dump_disassembly(&shader
->prolog
->binary
,
5275 debug
, "prolog", file
);
5276 if (shader
->previous_stage
)
5277 si_shader_dump_disassembly(&shader
->previous_stage
->binary
,
5278 debug
, "previous stage", file
);
5279 if (shader
->prolog2
)
5280 si_shader_dump_disassembly(&shader
->prolog2
->binary
,
5281 debug
, "prolog2", file
);
5283 si_shader_dump_disassembly(&shader
->binary
, debug
, "main", file
);
5286 si_shader_dump_disassembly(&shader
->epilog
->binary
,
5287 debug
, "epilog", file
);
5288 fprintf(file
, "\n");
5291 si_shader_dump_stats(sscreen
, shader
, debug
, processor
, file
,
5292 check_debug_option
);
5295 static int si_compile_llvm(struct si_screen
*sscreen
,
5296 struct ac_shader_binary
*binary
,
5297 struct si_shader_config
*conf
,
5298 LLVMTargetMachineRef tm
,
5300 struct pipe_debug_callback
*debug
,
5305 unsigned count
= p_atomic_inc_return(&sscreen
->b
.num_compilations
);
5307 if (si_can_dump_shader(&sscreen
->b
, processor
)) {
5308 fprintf(stderr
, "radeonsi: Compiling shader %d\n", count
);
5310 if (!(sscreen
->b
.debug_flags
& (DBG(NO_IR
) | DBG(PREOPT_IR
)))) {
5311 fprintf(stderr
, "%s LLVM IR:\n\n", name
);
5312 ac_dump_module(mod
);
5313 fprintf(stderr
, "\n");
5317 if (sscreen
->record_llvm_ir
) {
5318 char *ir
= LLVMPrintModuleToString(mod
);
5319 binary
->llvm_ir_string
= strdup(ir
);
5320 LLVMDisposeMessage(ir
);
5323 if (!si_replace_shader(count
, binary
)) {
5324 r
= si_llvm_compile(mod
, binary
, tm
, debug
);
5329 si_shader_binary_read_config(binary
, conf
, 0);
5331 /* Enable 64-bit and 16-bit denormals, because there is no performance
5334 * If denormals are enabled, all floating-point output modifiers are
5337 * Don't enable denormals for 32-bit floats, because:
5338 * - Floating-point output modifiers would be ignored by the hw.
5339 * - Some opcodes don't support denormals, such as v_mad_f32. We would
5340 * have to stop using those.
5341 * - SI & CI would be very slow.
5343 conf
->float_mode
|= V_00B028_FP_64_DENORMS
;
5345 FREE(binary
->config
);
5346 FREE(binary
->global_symbol_offsets
);
5347 binary
->config
= NULL
;
5348 binary
->global_symbol_offsets
= NULL
;
5350 /* Some shaders can't have rodata because their binaries can be
5353 if (binary
->rodata_size
&&
5354 (processor
== PIPE_SHADER_VERTEX
||
5355 processor
== PIPE_SHADER_TESS_CTRL
||
5356 processor
== PIPE_SHADER_TESS_EVAL
||
5357 processor
== PIPE_SHADER_FRAGMENT
)) {
5358 fprintf(stderr
, "radeonsi: The shader can't have rodata.");
5365 static void si_llvm_build_ret(struct si_shader_context
*ctx
, LLVMValueRef ret
)
5367 if (LLVMGetTypeKind(LLVMTypeOf(ret
)) == LLVMVoidTypeKind
)
5368 LLVMBuildRetVoid(ctx
->ac
.builder
);
5370 LLVMBuildRet(ctx
->ac
.builder
, ret
);
5373 /* Generate code for the hardware VS shader stage to go with a geometry shader */
5375 si_generate_gs_copy_shader(struct si_screen
*sscreen
,
5376 LLVMTargetMachineRef tm
,
5377 struct si_shader_selector
*gs_selector
,
5378 struct pipe_debug_callback
*debug
)
5380 struct si_shader_context ctx
;
5381 struct si_shader
*shader
;
5382 LLVMBuilderRef builder
;
5383 struct lp_build_tgsi_context
*bld_base
= &ctx
.bld_base
;
5384 struct lp_build_context
*uint
= &bld_base
->uint_bld
;
5385 struct si_shader_output_values
*outputs
;
5386 struct tgsi_shader_info
*gsinfo
= &gs_selector
->info
;
5389 outputs
= MALLOC(gsinfo
->num_outputs
* sizeof(outputs
[0]));
5394 shader
= CALLOC_STRUCT(si_shader
);
5400 /* We can leave the fence as permanently signaled because the GS copy
5401 * shader only becomes visible globally after it has been compiled. */
5402 util_queue_fence_init(&shader
->ready
);
5404 shader
->selector
= gs_selector
;
5405 shader
->is_gs_copy_shader
= true;
5407 si_init_shader_ctx(&ctx
, sscreen
, tm
);
5408 ctx
.shader
= shader
;
5409 ctx
.type
= PIPE_SHADER_VERTEX
;
5411 builder
= ctx
.ac
.builder
;
5413 create_function(&ctx
);
5414 preload_ring_buffers(&ctx
);
5416 LLVMValueRef voffset
=
5417 lp_build_mul_imm(uint
, ctx
.abi
.vertex_id
, 4);
5419 /* Fetch the vertex stream ID.*/
5420 LLVMValueRef stream_id
;
5422 if (gs_selector
->so
.num_outputs
)
5423 stream_id
= unpack_param(&ctx
, ctx
.param_streamout_config
, 24, 2);
5425 stream_id
= ctx
.i32_0
;
5427 /* Fill in output information. */
5428 for (i
= 0; i
< gsinfo
->num_outputs
; ++i
) {
5429 outputs
[i
].semantic_name
= gsinfo
->output_semantic_name
[i
];
5430 outputs
[i
].semantic_index
= gsinfo
->output_semantic_index
[i
];
5432 for (int chan
= 0; chan
< 4; chan
++) {
5433 outputs
[i
].vertex_stream
[chan
] =
5434 (gsinfo
->output_streams
[i
] >> (2 * chan
)) & 3;
5438 LLVMBasicBlockRef end_bb
;
5439 LLVMValueRef switch_inst
;
5441 end_bb
= LLVMAppendBasicBlockInContext(ctx
.ac
.context
, ctx
.main_fn
, "end");
5442 switch_inst
= LLVMBuildSwitch(builder
, stream_id
, end_bb
, 4);
5444 for (int stream
= 0; stream
< 4; stream
++) {
5445 LLVMBasicBlockRef bb
;
5448 if (!gsinfo
->num_stream_output_components
[stream
])
5451 if (stream
> 0 && !gs_selector
->so
.num_outputs
)
5454 bb
= LLVMInsertBasicBlockInContext(ctx
.ac
.context
, end_bb
, "out");
5455 LLVMAddCase(switch_inst
, LLVMConstInt(ctx
.i32
, stream
, 0), bb
);
5456 LLVMPositionBuilderAtEnd(builder
, bb
);
5458 /* Fetch vertex data from GSVS ring */
5460 for (i
= 0; i
< gsinfo
->num_outputs
; ++i
) {
5461 for (unsigned chan
= 0; chan
< 4; chan
++) {
5462 if (!(gsinfo
->output_usagemask
[i
] & (1 << chan
)) ||
5463 outputs
[i
].vertex_stream
[chan
] != stream
) {
5464 outputs
[i
].values
[chan
] = ctx
.bld_base
.base
.undef
;
5468 LLVMValueRef soffset
= LLVMConstInt(ctx
.i32
,
5469 offset
* gs_selector
->gs_max_out_vertices
* 16 * 4, 0);
5472 outputs
[i
].values
[chan
] =
5473 ac_build_buffer_load(&ctx
.ac
,
5474 ctx
.gsvs_ring
[0], 1,
5481 /* Streamout and exports. */
5482 if (gs_selector
->so
.num_outputs
) {
5483 si_llvm_emit_streamout(&ctx
, outputs
,
5484 gsinfo
->num_outputs
,
5489 si_llvm_export_vs(bld_base
, outputs
, gsinfo
->num_outputs
);
5491 LLVMBuildBr(builder
, end_bb
);
5494 LLVMPositionBuilderAtEnd(builder
, end_bb
);
5496 LLVMBuildRetVoid(ctx
.ac
.builder
);
5498 ctx
.type
= PIPE_SHADER_GEOMETRY
; /* override for shader dumping */
5499 si_llvm_optimize_module(&ctx
);
5501 r
= si_compile_llvm(sscreen
, &ctx
.shader
->binary
,
5502 &ctx
.shader
->config
, ctx
.tm
,
5504 debug
, PIPE_SHADER_GEOMETRY
,
5507 if (si_can_dump_shader(&sscreen
->b
, PIPE_SHADER_GEOMETRY
))
5508 fprintf(stderr
, "GS Copy Shader:\n");
5509 si_shader_dump(sscreen
, ctx
.shader
, debug
,
5510 PIPE_SHADER_GEOMETRY
, stderr
, true);
5511 r
= si_shader_binary_upload(sscreen
, ctx
.shader
);
5514 si_llvm_dispose(&ctx
);
5525 static void si_dump_shader_key_vs(const struct si_shader_key
*key
,
5526 const struct si_vs_prolog_bits
*prolog
,
5527 const char *prefix
, FILE *f
)
5529 fprintf(f
, " %s.instance_divisor_is_one = %u\n",
5530 prefix
, prolog
->instance_divisor_is_one
);
5531 fprintf(f
, " %s.instance_divisor_is_fetched = %u\n",
5532 prefix
, prolog
->instance_divisor_is_fetched
);
5533 fprintf(f
, " %s.ls_vgpr_fix = %u\n",
5534 prefix
, prolog
->ls_vgpr_fix
);
5536 fprintf(f
, " mono.vs.fix_fetch = {");
5537 for (int i
= 0; i
< SI_MAX_ATTRIBS
; i
++)
5538 fprintf(f
, !i
? "%u" : ", %u", key
->mono
.vs_fix_fetch
[i
]);
5542 static void si_dump_shader_key(unsigned processor
, const struct si_shader
*shader
,
5545 const struct si_shader_key
*key
= &shader
->key
;
5547 fprintf(f
, "SHADER KEY\n");
5549 switch (processor
) {
5550 case PIPE_SHADER_VERTEX
:
5551 si_dump_shader_key_vs(key
, &key
->part
.vs
.prolog
,
5552 "part.vs.prolog", f
);
5553 fprintf(f
, " as_es = %u\n", key
->as_es
);
5554 fprintf(f
, " as_ls = %u\n", key
->as_ls
);
5555 fprintf(f
, " mono.u.vs_export_prim_id = %u\n",
5556 key
->mono
.u
.vs_export_prim_id
);
5559 case PIPE_SHADER_TESS_CTRL
:
5560 if (shader
->selector
->screen
->b
.chip_class
>= GFX9
) {
5561 si_dump_shader_key_vs(key
, &key
->part
.tcs
.ls_prolog
,
5562 "part.tcs.ls_prolog", f
);
5564 fprintf(f
, " part.tcs.epilog.prim_mode = %u\n", key
->part
.tcs
.epilog
.prim_mode
);
5565 fprintf(f
, " mono.u.ff_tcs_inputs_to_copy = 0x%"PRIx64
"\n", key
->mono
.u
.ff_tcs_inputs_to_copy
);
5568 case PIPE_SHADER_TESS_EVAL
:
5569 fprintf(f
, " as_es = %u\n", key
->as_es
);
5570 fprintf(f
, " mono.u.vs_export_prim_id = %u\n",
5571 key
->mono
.u
.vs_export_prim_id
);
5574 case PIPE_SHADER_GEOMETRY
:
5575 if (shader
->is_gs_copy_shader
)
5578 if (shader
->selector
->screen
->b
.chip_class
>= GFX9
&&
5579 key
->part
.gs
.es
->type
== PIPE_SHADER_VERTEX
) {
5580 si_dump_shader_key_vs(key
, &key
->part
.gs
.vs_prolog
,
5581 "part.gs.vs_prolog", f
);
5583 fprintf(f
, " part.gs.prolog.tri_strip_adj_fix = %u\n", key
->part
.gs
.prolog
.tri_strip_adj_fix
);
5586 case PIPE_SHADER_COMPUTE
:
5589 case PIPE_SHADER_FRAGMENT
:
5590 fprintf(f
, " part.ps.prolog.color_two_side = %u\n", key
->part
.ps
.prolog
.color_two_side
);
5591 fprintf(f
, " part.ps.prolog.flatshade_colors = %u\n", key
->part
.ps
.prolog
.flatshade_colors
);
5592 fprintf(f
, " part.ps.prolog.poly_stipple = %u\n", key
->part
.ps
.prolog
.poly_stipple
);
5593 fprintf(f
, " part.ps.prolog.force_persp_sample_interp = %u\n", key
->part
.ps
.prolog
.force_persp_sample_interp
);
5594 fprintf(f
, " part.ps.prolog.force_linear_sample_interp = %u\n", key
->part
.ps
.prolog
.force_linear_sample_interp
);
5595 fprintf(f
, " part.ps.prolog.force_persp_center_interp = %u\n", key
->part
.ps
.prolog
.force_persp_center_interp
);
5596 fprintf(f
, " part.ps.prolog.force_linear_center_interp = %u\n", key
->part
.ps
.prolog
.force_linear_center_interp
);
5597 fprintf(f
, " part.ps.prolog.bc_optimize_for_persp = %u\n", key
->part
.ps
.prolog
.bc_optimize_for_persp
);
5598 fprintf(f
, " part.ps.prolog.bc_optimize_for_linear = %u\n", key
->part
.ps
.prolog
.bc_optimize_for_linear
);
5599 fprintf(f
, " part.ps.epilog.spi_shader_col_format = 0x%x\n", key
->part
.ps
.epilog
.spi_shader_col_format
);
5600 fprintf(f
, " part.ps.epilog.color_is_int8 = 0x%X\n", key
->part
.ps
.epilog
.color_is_int8
);
5601 fprintf(f
, " part.ps.epilog.color_is_int10 = 0x%X\n", key
->part
.ps
.epilog
.color_is_int10
);
5602 fprintf(f
, " part.ps.epilog.last_cbuf = %u\n", key
->part
.ps
.epilog
.last_cbuf
);
5603 fprintf(f
, " part.ps.epilog.alpha_func = %u\n", key
->part
.ps
.epilog
.alpha_func
);
5604 fprintf(f
, " part.ps.epilog.alpha_to_one = %u\n", key
->part
.ps
.epilog
.alpha_to_one
);
5605 fprintf(f
, " part.ps.epilog.poly_line_smoothing = %u\n", key
->part
.ps
.epilog
.poly_line_smoothing
);
5606 fprintf(f
, " part.ps.epilog.clamp_color = %u\n", key
->part
.ps
.epilog
.clamp_color
);
5613 if ((processor
== PIPE_SHADER_GEOMETRY
||
5614 processor
== PIPE_SHADER_TESS_EVAL
||
5615 processor
== PIPE_SHADER_VERTEX
) &&
5616 !key
->as_es
&& !key
->as_ls
) {
5617 fprintf(f
, " opt.kill_outputs = 0x%"PRIx64
"\n", key
->opt
.kill_outputs
);
5618 fprintf(f
, " opt.clip_disable = %u\n", key
->opt
.clip_disable
);
5622 static void si_init_shader_ctx(struct si_shader_context
*ctx
,
5623 struct si_screen
*sscreen
,
5624 LLVMTargetMachineRef tm
)
5626 struct lp_build_tgsi_context
*bld_base
;
5628 si_llvm_context_init(ctx
, sscreen
, tm
);
5630 bld_base
= &ctx
->bld_base
;
5631 bld_base
->emit_fetch_funcs
[TGSI_FILE_CONSTANT
] = fetch_constant
;
5633 bld_base
->op_actions
[TGSI_OPCODE_INTERP_CENTROID
] = interp_action
;
5634 bld_base
->op_actions
[TGSI_OPCODE_INTERP_SAMPLE
] = interp_action
;
5635 bld_base
->op_actions
[TGSI_OPCODE_INTERP_OFFSET
] = interp_action
;
5637 bld_base
->op_actions
[TGSI_OPCODE_MEMBAR
].emit
= membar_emit
;
5639 bld_base
->op_actions
[TGSI_OPCODE_CLOCK
].emit
= clock_emit
;
5641 bld_base
->op_actions
[TGSI_OPCODE_DDX
].emit
= si_llvm_emit_ddxy
;
5642 bld_base
->op_actions
[TGSI_OPCODE_DDY
].emit
= si_llvm_emit_ddxy
;
5643 bld_base
->op_actions
[TGSI_OPCODE_DDX_FINE
].emit
= si_llvm_emit_ddxy
;
5644 bld_base
->op_actions
[TGSI_OPCODE_DDY_FINE
].emit
= si_llvm_emit_ddxy
;
5646 bld_base
->op_actions
[TGSI_OPCODE_VOTE_ALL
].emit
= vote_all_emit
;
5647 bld_base
->op_actions
[TGSI_OPCODE_VOTE_ANY
].emit
= vote_any_emit
;
5648 bld_base
->op_actions
[TGSI_OPCODE_VOTE_EQ
].emit
= vote_eq_emit
;
5649 bld_base
->op_actions
[TGSI_OPCODE_BALLOT
].emit
= ballot_emit
;
5650 bld_base
->op_actions
[TGSI_OPCODE_READ_FIRST
].intr_name
= "llvm.amdgcn.readfirstlane";
5651 bld_base
->op_actions
[TGSI_OPCODE_READ_FIRST
].emit
= read_lane_emit
;
5652 bld_base
->op_actions
[TGSI_OPCODE_READ_INVOC
].intr_name
= "llvm.amdgcn.readlane";
5653 bld_base
->op_actions
[TGSI_OPCODE_READ_INVOC
].fetch_args
= read_invoc_fetch_args
;
5654 bld_base
->op_actions
[TGSI_OPCODE_READ_INVOC
].emit
= read_lane_emit
;
5656 bld_base
->op_actions
[TGSI_OPCODE_EMIT
].emit
= si_tgsi_emit_vertex
;
5657 bld_base
->op_actions
[TGSI_OPCODE_ENDPRIM
].emit
= si_llvm_emit_primitive
;
5658 bld_base
->op_actions
[TGSI_OPCODE_BARRIER
].emit
= si_llvm_emit_barrier
;
5661 static void si_optimize_vs_outputs(struct si_shader_context
*ctx
)
5663 struct si_shader
*shader
= ctx
->shader
;
5664 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
5666 if ((ctx
->type
!= PIPE_SHADER_VERTEX
&&
5667 ctx
->type
!= PIPE_SHADER_TESS_EVAL
) ||
5668 shader
->key
.as_ls
||
5672 ac_optimize_vs_outputs(&ctx
->ac
,
5674 shader
->info
.vs_output_param_offset
,
5676 &shader
->info
.nr_param_exports
);
5679 static void si_count_scratch_private_memory(struct si_shader_context
*ctx
)
5681 ctx
->shader
->config
.private_mem_vgprs
= 0;
5683 /* Process all LLVM instructions. */
5684 LLVMBasicBlockRef bb
= LLVMGetFirstBasicBlock(ctx
->main_fn
);
5686 LLVMValueRef next
= LLVMGetFirstInstruction(bb
);
5689 LLVMValueRef inst
= next
;
5690 next
= LLVMGetNextInstruction(next
);
5692 if (LLVMGetInstructionOpcode(inst
) != LLVMAlloca
)
5695 LLVMTypeRef type
= LLVMGetElementType(LLVMTypeOf(inst
));
5696 /* No idea why LLVM aligns allocas to 4 elements. */
5697 unsigned alignment
= LLVMGetAlignment(inst
);
5698 unsigned dw_size
= align(ac_get_type_size(type
) / 4, alignment
);
5699 ctx
->shader
->config
.private_mem_vgprs
+= dw_size
;
5701 bb
= LLVMGetNextBasicBlock(bb
);
5705 static void si_init_exec_full_mask(struct si_shader_context
*ctx
)
5707 LLVMValueRef full_mask
= LLVMConstInt(ctx
->i64
, ~0ull, 0);
5708 lp_build_intrinsic(ctx
->ac
.builder
,
5709 "llvm.amdgcn.init.exec", ctx
->voidt
,
5710 &full_mask
, 1, LP_FUNC_ATTR_CONVERGENT
);
5713 static void si_init_exec_from_input(struct si_shader_context
*ctx
,
5714 unsigned param
, unsigned bitoffset
)
5716 LLVMValueRef args
[] = {
5717 LLVMGetParam(ctx
->main_fn
, param
),
5718 LLVMConstInt(ctx
->i32
, bitoffset
, 0),
5720 lp_build_intrinsic(ctx
->ac
.builder
,
5721 "llvm.amdgcn.init.exec.from.input",
5722 ctx
->voidt
, args
, 2, LP_FUNC_ATTR_CONVERGENT
);
5725 static bool si_vs_needs_prolog(const struct si_shader_selector
*sel
,
5726 const struct si_vs_prolog_bits
*key
)
5728 /* VGPR initialization fixup for Vega10 and Raven is always done in the
5730 return sel
->vs_needs_prolog
|| key
->ls_vgpr_fix
;
5733 static bool si_compile_tgsi_main(struct si_shader_context
*ctx
,
5736 struct si_shader
*shader
= ctx
->shader
;
5737 struct si_shader_selector
*sel
= shader
->selector
;
5738 struct lp_build_tgsi_context
*bld_base
= &ctx
->bld_base
;
5740 // TODO clean all this up!
5741 switch (ctx
->type
) {
5742 case PIPE_SHADER_VERTEX
:
5743 ctx
->load_input
= declare_input_vs
;
5744 if (shader
->key
.as_ls
)
5745 bld_base
->emit_epilogue
= si_llvm_emit_ls_epilogue
;
5746 else if (shader
->key
.as_es
)
5747 bld_base
->emit_epilogue
= si_llvm_emit_es_epilogue
;
5749 ctx
->abi
.emit_outputs
= si_llvm_emit_vs_epilogue
;
5750 bld_base
->emit_epilogue
= si_tgsi_emit_epilogue
;
5753 case PIPE_SHADER_TESS_CTRL
:
5754 bld_base
->emit_fetch_funcs
[TGSI_FILE_INPUT
] = fetch_input_tcs
;
5755 bld_base
->emit_fetch_funcs
[TGSI_FILE_OUTPUT
] = fetch_output_tcs
;
5756 bld_base
->emit_store
= store_output_tcs
;
5757 bld_base
->emit_epilogue
= si_llvm_emit_tcs_epilogue
;
5759 case PIPE_SHADER_TESS_EVAL
:
5760 bld_base
->emit_fetch_funcs
[TGSI_FILE_INPUT
] = fetch_input_tes
;
5761 if (shader
->key
.as_es
)
5762 bld_base
->emit_epilogue
= si_llvm_emit_es_epilogue
;
5764 ctx
->abi
.emit_outputs
= si_llvm_emit_vs_epilogue
;
5765 bld_base
->emit_epilogue
= si_tgsi_emit_epilogue
;
5768 case PIPE_SHADER_GEOMETRY
:
5769 bld_base
->emit_fetch_funcs
[TGSI_FILE_INPUT
] = fetch_input_gs
;
5770 ctx
->abi
.emit_vertex
= si_llvm_emit_vertex
;
5771 bld_base
->emit_epilogue
= si_llvm_emit_gs_epilogue
;
5773 case PIPE_SHADER_FRAGMENT
:
5774 ctx
->load_input
= declare_input_fs
;
5775 ctx
->abi
.emit_outputs
= si_llvm_return_fs_outputs
;
5776 bld_base
->emit_epilogue
= si_tgsi_emit_epilogue
;
5778 case PIPE_SHADER_COMPUTE
:
5781 assert(!"Unsupported shader type");
5785 ctx
->abi
.load_ubo
= load_ubo
;
5786 ctx
->abi
.load_ssbo
= load_ssbo
;
5788 create_function(ctx
);
5789 preload_ring_buffers(ctx
);
5791 /* For GFX9 merged shaders:
5792 * - Set EXEC for the first shader. If the prolog is present, set
5793 * EXEC there instead.
5794 * - Add a barrier before the second shader.
5795 * - In the second shader, reset EXEC to ~0 and wrap the main part in
5796 * an if-statement. This is required for correctness in geometry
5797 * shaders, to ensure that empty GS waves do not send GS_EMIT and
5800 * For monolithic merged shaders, the first shader is wrapped in an
5801 * if-block together with its prolog in si_build_wrapper_function.
5803 if (ctx
->screen
->b
.chip_class
>= GFX9
) {
5804 if (!is_monolithic
&&
5805 sel
->info
.num_instructions
> 1 && /* not empty shader */
5806 (shader
->key
.as_es
|| shader
->key
.as_ls
) &&
5807 (ctx
->type
== PIPE_SHADER_TESS_EVAL
||
5808 (ctx
->type
== PIPE_SHADER_VERTEX
&&
5809 !si_vs_needs_prolog(sel
, &shader
->key
.part
.vs
.prolog
)))) {
5810 si_init_exec_from_input(ctx
,
5811 ctx
->param_merged_wave_info
, 0);
5812 } else if (ctx
->type
== PIPE_SHADER_TESS_CTRL
||
5813 ctx
->type
== PIPE_SHADER_GEOMETRY
) {
5815 si_init_exec_full_mask(ctx
);
5817 /* The barrier must execute for all shaders in a
5820 si_llvm_emit_barrier(NULL
, bld_base
, NULL
);
5822 LLVMValueRef num_threads
= unpack_param(ctx
, ctx
->param_merged_wave_info
, 8, 8);
5824 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntULT
,
5825 ac_get_thread_id(&ctx
->ac
), num_threads
, "");
5826 lp_build_if(&ctx
->merged_wrap_if_state
, &ctx
->gallivm
, ena
);
5830 if (ctx
->type
== PIPE_SHADER_TESS_CTRL
&&
5831 sel
->tcs_info
.tessfactors_are_def_in_all_invocs
) {
5832 for (unsigned i
= 0; i
< 6; i
++) {
5833 ctx
->invoc0_tess_factors
[i
] =
5834 lp_build_alloca_undef(&ctx
->gallivm
, ctx
->i32
, "");
5838 if (ctx
->type
== PIPE_SHADER_GEOMETRY
) {
5840 for (i
= 0; i
< 4; i
++) {
5841 ctx
->gs_next_vertex
[i
] =
5842 lp_build_alloca(&ctx
->gallivm
,
5847 if (sel
->force_correct_derivs_after_kill
) {
5848 ctx
->postponed_kill
= lp_build_alloca_undef(&ctx
->gallivm
, ctx
->i1
, "");
5849 /* true = don't kill. */
5850 LLVMBuildStore(ctx
->ac
.builder
, LLVMConstInt(ctx
->i1
, 1, 0),
5851 ctx
->postponed_kill
);
5855 if (!lp_build_tgsi_llvm(bld_base
, sel
->tokens
)) {
5856 fprintf(stderr
, "Failed to translate shader from TGSI to LLVM\n");
5860 if (!si_nir_build_llvm(ctx
, sel
->nir
)) {
5861 fprintf(stderr
, "Failed to translate shader from NIR to LLVM\n");
5866 si_llvm_build_ret(ctx
, ctx
->return_value
);
5871 * Compute the VS prolog key, which contains all the information needed to
5872 * build the VS prolog function, and set shader->info bits where needed.
5874 * \param info Shader info of the vertex shader.
5875 * \param num_input_sgprs Number of input SGPRs for the vertex shader.
5876 * \param prolog_key Key of the VS prolog
5877 * \param shader_out The vertex shader, or the next shader if merging LS+HS or ES+GS.
5878 * \param key Output shader part key.
5880 static void si_get_vs_prolog_key(const struct tgsi_shader_info
*info
,
5881 unsigned num_input_sgprs
,
5882 const struct si_vs_prolog_bits
*prolog_key
,
5883 struct si_shader
*shader_out
,
5884 union si_shader_part_key
*key
)
5886 memset(key
, 0, sizeof(*key
));
5887 key
->vs_prolog
.states
= *prolog_key
;
5888 key
->vs_prolog
.num_input_sgprs
= num_input_sgprs
;
5889 key
->vs_prolog
.last_input
= MAX2(1, info
->num_inputs
) - 1;
5890 key
->vs_prolog
.as_ls
= shader_out
->key
.as_ls
;
5891 key
->vs_prolog
.as_es
= shader_out
->key
.as_es
;
5893 if (shader_out
->selector
->type
== PIPE_SHADER_TESS_CTRL
) {
5894 key
->vs_prolog
.as_ls
= 1;
5895 key
->vs_prolog
.num_merged_next_stage_vgprs
= 2;
5896 } else if (shader_out
->selector
->type
== PIPE_SHADER_GEOMETRY
) {
5897 key
->vs_prolog
.as_es
= 1;
5898 key
->vs_prolog
.num_merged_next_stage_vgprs
= 5;
5901 /* Enable loading the InstanceID VGPR. */
5902 uint16_t input_mask
= u_bit_consecutive(0, info
->num_inputs
);
5904 if ((key
->vs_prolog
.states
.instance_divisor_is_one
|
5905 key
->vs_prolog
.states
.instance_divisor_is_fetched
) & input_mask
)
5906 shader_out
->info
.uses_instanceid
= true;
5910 * Compute the PS prolog key, which contains all the information needed to
5911 * build the PS prolog function, and set related bits in shader->config.
5913 static void si_get_ps_prolog_key(struct si_shader
*shader
,
5914 union si_shader_part_key
*key
,
5915 bool separate_prolog
)
5917 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
5919 memset(key
, 0, sizeof(*key
));
5920 key
->ps_prolog
.states
= shader
->key
.part
.ps
.prolog
;
5921 key
->ps_prolog
.colors_read
= info
->colors_read
;
5922 key
->ps_prolog
.num_input_sgprs
= shader
->info
.num_input_sgprs
;
5923 key
->ps_prolog
.num_input_vgprs
= shader
->info
.num_input_vgprs
;
5924 key
->ps_prolog
.wqm
= info
->uses_derivatives
&&
5925 (key
->ps_prolog
.colors_read
||
5926 key
->ps_prolog
.states
.force_persp_sample_interp
||
5927 key
->ps_prolog
.states
.force_linear_sample_interp
||
5928 key
->ps_prolog
.states
.force_persp_center_interp
||
5929 key
->ps_prolog
.states
.force_linear_center_interp
||
5930 key
->ps_prolog
.states
.bc_optimize_for_persp
||
5931 key
->ps_prolog
.states
.bc_optimize_for_linear
);
5932 key
->ps_prolog
.ancillary_vgpr_index
= shader
->info
.ancillary_vgpr_index
;
5934 if (info
->colors_read
) {
5935 unsigned *color
= shader
->selector
->color_attr_index
;
5937 if (shader
->key
.part
.ps
.prolog
.color_two_side
) {
5938 /* BCOLORs are stored after the last input. */
5939 key
->ps_prolog
.num_interp_inputs
= info
->num_inputs
;
5940 key
->ps_prolog
.face_vgpr_index
= shader
->info
.face_vgpr_index
;
5941 shader
->config
.spi_ps_input_ena
|= S_0286CC_FRONT_FACE_ENA(1);
5944 for (unsigned i
= 0; i
< 2; i
++) {
5945 unsigned interp
= info
->input_interpolate
[color
[i
]];
5946 unsigned location
= info
->input_interpolate_loc
[color
[i
]];
5948 if (!(info
->colors_read
& (0xf << i
*4)))
5951 key
->ps_prolog
.color_attr_index
[i
] = color
[i
];
5953 if (shader
->key
.part
.ps
.prolog
.flatshade_colors
&&
5954 interp
== TGSI_INTERPOLATE_COLOR
)
5955 interp
= TGSI_INTERPOLATE_CONSTANT
;
5958 case TGSI_INTERPOLATE_CONSTANT
:
5959 key
->ps_prolog
.color_interp_vgpr_index
[i
] = -1;
5961 case TGSI_INTERPOLATE_PERSPECTIVE
:
5962 case TGSI_INTERPOLATE_COLOR
:
5963 /* Force the interpolation location for colors here. */
5964 if (shader
->key
.part
.ps
.prolog
.force_persp_sample_interp
)
5965 location
= TGSI_INTERPOLATE_LOC_SAMPLE
;
5966 if (shader
->key
.part
.ps
.prolog
.force_persp_center_interp
)
5967 location
= TGSI_INTERPOLATE_LOC_CENTER
;
5970 case TGSI_INTERPOLATE_LOC_SAMPLE
:
5971 key
->ps_prolog
.color_interp_vgpr_index
[i
] = 0;
5972 shader
->config
.spi_ps_input_ena
|=
5973 S_0286CC_PERSP_SAMPLE_ENA(1);
5975 case TGSI_INTERPOLATE_LOC_CENTER
:
5976 key
->ps_prolog
.color_interp_vgpr_index
[i
] = 2;
5977 shader
->config
.spi_ps_input_ena
|=
5978 S_0286CC_PERSP_CENTER_ENA(1);
5980 case TGSI_INTERPOLATE_LOC_CENTROID
:
5981 key
->ps_prolog
.color_interp_vgpr_index
[i
] = 4;
5982 shader
->config
.spi_ps_input_ena
|=
5983 S_0286CC_PERSP_CENTROID_ENA(1);
5989 case TGSI_INTERPOLATE_LINEAR
:
5990 /* Force the interpolation location for colors here. */
5991 if (shader
->key
.part
.ps
.prolog
.force_linear_sample_interp
)
5992 location
= TGSI_INTERPOLATE_LOC_SAMPLE
;
5993 if (shader
->key
.part
.ps
.prolog
.force_linear_center_interp
)
5994 location
= TGSI_INTERPOLATE_LOC_CENTER
;
5996 /* The VGPR assignment for non-monolithic shaders
5997 * works because InitialPSInputAddr is set on the
5998 * main shader and PERSP_PULL_MODEL is never used.
6001 case TGSI_INTERPOLATE_LOC_SAMPLE
:
6002 key
->ps_prolog
.color_interp_vgpr_index
[i
] =
6003 separate_prolog
? 6 : 9;
6004 shader
->config
.spi_ps_input_ena
|=
6005 S_0286CC_LINEAR_SAMPLE_ENA(1);
6007 case TGSI_INTERPOLATE_LOC_CENTER
:
6008 key
->ps_prolog
.color_interp_vgpr_index
[i
] =
6009 separate_prolog
? 8 : 11;
6010 shader
->config
.spi_ps_input_ena
|=
6011 S_0286CC_LINEAR_CENTER_ENA(1);
6013 case TGSI_INTERPOLATE_LOC_CENTROID
:
6014 key
->ps_prolog
.color_interp_vgpr_index
[i
] =
6015 separate_prolog
? 10 : 13;
6016 shader
->config
.spi_ps_input_ena
|=
6017 S_0286CC_LINEAR_CENTROID_ENA(1);
6031 * Check whether a PS prolog is required based on the key.
6033 static bool si_need_ps_prolog(const union si_shader_part_key
*key
)
6035 return key
->ps_prolog
.colors_read
||
6036 key
->ps_prolog
.states
.force_persp_sample_interp
||
6037 key
->ps_prolog
.states
.force_linear_sample_interp
||
6038 key
->ps_prolog
.states
.force_persp_center_interp
||
6039 key
->ps_prolog
.states
.force_linear_center_interp
||
6040 key
->ps_prolog
.states
.bc_optimize_for_persp
||
6041 key
->ps_prolog
.states
.bc_optimize_for_linear
||
6042 key
->ps_prolog
.states
.poly_stipple
||
6043 key
->ps_prolog
.states
.samplemask_log_ps_iter
;
6047 * Compute the PS epilog key, which contains all the information needed to
6048 * build the PS epilog function.
6050 static void si_get_ps_epilog_key(struct si_shader
*shader
,
6051 union si_shader_part_key
*key
)
6053 struct tgsi_shader_info
*info
= &shader
->selector
->info
;
6054 memset(key
, 0, sizeof(*key
));
6055 key
->ps_epilog
.colors_written
= info
->colors_written
;
6056 key
->ps_epilog
.writes_z
= info
->writes_z
;
6057 key
->ps_epilog
.writes_stencil
= info
->writes_stencil
;
6058 key
->ps_epilog
.writes_samplemask
= info
->writes_samplemask
;
6059 key
->ps_epilog
.states
= shader
->key
.part
.ps
.epilog
;
6063 * Build the GS prolog function. Rotate the input vertices for triangle strips
6066 static void si_build_gs_prolog_function(struct si_shader_context
*ctx
,
6067 union si_shader_part_key
*key
)
6069 unsigned num_sgprs
, num_vgprs
;
6070 struct si_function_info fninfo
;
6071 LLVMBuilderRef builder
= ctx
->ac
.builder
;
6072 LLVMTypeRef returns
[48];
6073 LLVMValueRef func
, ret
;
6075 si_init_function_info(&fninfo
);
6077 if (ctx
->screen
->b
.chip_class
>= GFX9
) {
6078 num_sgprs
= 8 + GFX9_GS_NUM_USER_SGPR
;
6079 num_vgprs
= 5; /* ES inputs are not needed by GS */
6081 num_sgprs
= GFX6_GS_NUM_USER_SGPR
+ 2;
6085 for (unsigned i
= 0; i
< num_sgprs
; ++i
) {
6086 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
6087 returns
[i
] = ctx
->i32
;
6090 for (unsigned i
= 0; i
< num_vgprs
; ++i
) {
6091 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
);
6092 returns
[num_sgprs
+ i
] = ctx
->f32
;
6095 /* Create the function. */
6096 si_create_function(ctx
, "gs_prolog", returns
, num_sgprs
+ num_vgprs
,
6098 func
= ctx
->main_fn
;
6100 /* Set the full EXEC mask for the prolog, because we are only fiddling
6101 * with registers here. The main shader part will set the correct EXEC
6104 if (ctx
->screen
->b
.chip_class
>= GFX9
&& !key
->gs_prolog
.is_monolithic
)
6105 si_init_exec_full_mask(ctx
);
6107 /* Copy inputs to outputs. This should be no-op, as the registers match,
6108 * but it will prevent the compiler from overwriting them unintentionally.
6110 ret
= ctx
->return_value
;
6111 for (unsigned i
= 0; i
< num_sgprs
; i
++) {
6112 LLVMValueRef p
= LLVMGetParam(func
, i
);
6113 ret
= LLVMBuildInsertValue(builder
, ret
, p
, i
, "");
6115 for (unsigned i
= 0; i
< num_vgprs
; i
++) {
6116 LLVMValueRef p
= LLVMGetParam(func
, num_sgprs
+ i
);
6117 p
= ac_to_float(&ctx
->ac
, p
);
6118 ret
= LLVMBuildInsertValue(builder
, ret
, p
, num_sgprs
+ i
, "");
6121 if (key
->gs_prolog
.states
.tri_strip_adj_fix
) {
6122 /* Remap the input vertices for every other primitive. */
6123 const unsigned gfx6_vtx_params
[6] = {
6131 const unsigned gfx9_vtx_params
[3] = {
6136 LLVMValueRef vtx_in
[6], vtx_out
[6];
6137 LLVMValueRef prim_id
, rotate
;
6139 if (ctx
->screen
->b
.chip_class
>= GFX9
) {
6140 for (unsigned i
= 0; i
< 3; i
++) {
6141 vtx_in
[i
*2] = unpack_param(ctx
, gfx9_vtx_params
[i
], 0, 16);
6142 vtx_in
[i
*2+1] = unpack_param(ctx
, gfx9_vtx_params
[i
], 16, 16);
6145 for (unsigned i
= 0; i
< 6; i
++)
6146 vtx_in
[i
] = LLVMGetParam(func
, gfx6_vtx_params
[i
]);
6149 prim_id
= LLVMGetParam(func
, num_sgprs
+ 2);
6150 rotate
= LLVMBuildTrunc(builder
, prim_id
, ctx
->i1
, "");
6152 for (unsigned i
= 0; i
< 6; ++i
) {
6153 LLVMValueRef base
, rotated
;
6155 rotated
= vtx_in
[(i
+ 4) % 6];
6156 vtx_out
[i
] = LLVMBuildSelect(builder
, rotate
, rotated
, base
, "");
6159 if (ctx
->screen
->b
.chip_class
>= GFX9
) {
6160 for (unsigned i
= 0; i
< 3; i
++) {
6161 LLVMValueRef hi
, out
;
6163 hi
= LLVMBuildShl(builder
, vtx_out
[i
*2+1],
6164 LLVMConstInt(ctx
->i32
, 16, 0), "");
6165 out
= LLVMBuildOr(builder
, vtx_out
[i
*2], hi
, "");
6166 out
= ac_to_float(&ctx
->ac
, out
);
6167 ret
= LLVMBuildInsertValue(builder
, ret
, out
,
6168 gfx9_vtx_params
[i
], "");
6171 for (unsigned i
= 0; i
< 6; i
++) {
6174 out
= ac_to_float(&ctx
->ac
, vtx_out
[i
]);
6175 ret
= LLVMBuildInsertValue(builder
, ret
, out
,
6176 gfx6_vtx_params
[i
], "");
6181 LLVMBuildRet(builder
, ret
);
6185 * Given a list of shader part functions, build a wrapper function that
6186 * runs them in sequence to form a monolithic shader.
6188 static void si_build_wrapper_function(struct si_shader_context
*ctx
,
6189 LLVMValueRef
*parts
,
6192 unsigned next_shader_first_part
)
6194 LLVMBuilderRef builder
= ctx
->ac
.builder
;
6195 /* PS epilog has one arg per color component; gfx9 merged shader
6196 * prologs need to forward 32 user SGPRs.
6198 struct si_function_info fninfo
;
6199 LLVMValueRef initial
[64], out
[64];
6200 LLVMTypeRef function_type
;
6201 unsigned num_first_params
;
6202 unsigned num_out
, initial_num_out
;
6203 MAYBE_UNUSED
unsigned num_out_sgpr
; /* used in debug checks */
6204 MAYBE_UNUSED
unsigned initial_num_out_sgpr
; /* used in debug checks */
6205 unsigned num_sgprs
, num_vgprs
;
6207 struct lp_build_if_state if_state
;
6209 si_init_function_info(&fninfo
);
6211 for (unsigned i
= 0; i
< num_parts
; ++i
) {
6212 lp_add_function_attr(parts
[i
], -1, LP_FUNC_ATTR_ALWAYSINLINE
);
6213 LLVMSetLinkage(parts
[i
], LLVMPrivateLinkage
);
6216 /* The parameters of the wrapper function correspond to those of the
6217 * first part in terms of SGPRs and VGPRs, but we use the types of the
6218 * main part to get the right types. This is relevant for the
6219 * dereferenceable attribute on descriptor table pointers.
6224 function_type
= LLVMGetElementType(LLVMTypeOf(parts
[0]));
6225 num_first_params
= LLVMCountParamTypes(function_type
);
6227 for (unsigned i
= 0; i
< num_first_params
; ++i
) {
6228 LLVMValueRef param
= LLVMGetParam(parts
[0], i
);
6230 if (ac_is_sgpr_param(param
)) {
6231 assert(num_vgprs
== 0);
6232 num_sgprs
+= ac_get_type_size(LLVMTypeOf(param
)) / 4;
6234 num_vgprs
+= ac_get_type_size(LLVMTypeOf(param
)) / 4;
6239 while (gprs
< num_sgprs
+ num_vgprs
) {
6240 LLVMValueRef param
= LLVMGetParam(parts
[main_part
], fninfo
.num_params
);
6241 LLVMTypeRef type
= LLVMTypeOf(param
);
6242 unsigned size
= ac_get_type_size(type
) / 4;
6244 add_arg(&fninfo
, gprs
< num_sgprs
? ARG_SGPR
: ARG_VGPR
, type
);
6246 assert(ac_is_sgpr_param(param
) == (gprs
< num_sgprs
));
6247 assert(gprs
+ size
<= num_sgprs
+ num_vgprs
&&
6248 (gprs
>= num_sgprs
|| gprs
+ size
<= num_sgprs
));
6253 si_create_function(ctx
, "wrapper", NULL
, 0, &fninfo
,
6254 si_get_max_workgroup_size(ctx
->shader
));
6256 if (is_merged_shader(ctx
->shader
))
6257 si_init_exec_full_mask(ctx
);
6259 /* Record the arguments of the function as if they were an output of
6265 for (unsigned i
= 0; i
< fninfo
.num_params
; ++i
) {
6266 LLVMValueRef param
= LLVMGetParam(ctx
->main_fn
, i
);
6267 LLVMTypeRef param_type
= LLVMTypeOf(param
);
6268 LLVMTypeRef out_type
= i
< fninfo
.num_sgpr_params
? ctx
->i32
: ctx
->f32
;
6269 unsigned size
= ac_get_type_size(param_type
) / 4;
6272 if (param_type
!= out_type
)
6273 param
= LLVMBuildBitCast(builder
, param
, out_type
, "");
6274 out
[num_out
++] = param
;
6276 LLVMTypeRef vector_type
= LLVMVectorType(out_type
, size
);
6278 if (LLVMGetTypeKind(param_type
) == LLVMPointerTypeKind
) {
6279 param
= LLVMBuildPtrToInt(builder
, param
, ctx
->i64
, "");
6280 param_type
= ctx
->i64
;
6283 if (param_type
!= vector_type
)
6284 param
= LLVMBuildBitCast(builder
, param
, vector_type
, "");
6286 for (unsigned j
= 0; j
< size
; ++j
)
6287 out
[num_out
++] = LLVMBuildExtractElement(
6288 builder
, param
, LLVMConstInt(ctx
->i32
, j
, 0), "");
6291 if (i
< fninfo
.num_sgpr_params
)
6292 num_out_sgpr
= num_out
;
6295 memcpy(initial
, out
, sizeof(out
));
6296 initial_num_out
= num_out
;
6297 initial_num_out_sgpr
= num_out_sgpr
;
6299 /* Now chain the parts. */
6300 for (unsigned part
= 0; part
< num_parts
; ++part
) {
6301 LLVMValueRef in
[48];
6303 LLVMTypeRef ret_type
;
6304 unsigned out_idx
= 0;
6305 unsigned num_params
= LLVMCountParams(parts
[part
]);
6307 /* Merged shaders are executed conditionally depending
6308 * on the number of enabled threads passed in the input SGPRs. */
6309 if (is_merged_shader(ctx
->shader
) && part
== 0) {
6310 LLVMValueRef ena
, count
= initial
[3];
6312 count
= LLVMBuildAnd(builder
, count
,
6313 LLVMConstInt(ctx
->i32
, 0x7f, 0), "");
6314 ena
= LLVMBuildICmp(builder
, LLVMIntULT
,
6315 ac_get_thread_id(&ctx
->ac
), count
, "");
6316 lp_build_if(&if_state
, &ctx
->gallivm
, ena
);
6319 /* Derive arguments for the next part from outputs of the
6322 for (unsigned param_idx
= 0; param_idx
< num_params
; ++param_idx
) {
6324 LLVMTypeRef param_type
;
6326 unsigned param_size
;
6327 LLVMValueRef arg
= NULL
;
6329 param
= LLVMGetParam(parts
[part
], param_idx
);
6330 param_type
= LLVMTypeOf(param
);
6331 param_size
= ac_get_type_size(param_type
) / 4;
6332 is_sgpr
= ac_is_sgpr_param(param
);
6335 #if HAVE_LLVM < 0x0400
6336 LLVMRemoveAttribute(param
, LLVMByValAttribute
);
6338 unsigned kind_id
= LLVMGetEnumAttributeKindForName("byval", 5);
6339 LLVMRemoveEnumAttributeAtIndex(parts
[part
], param_idx
+ 1, kind_id
);
6341 lp_add_function_attr(parts
[part
], param_idx
+ 1, LP_FUNC_ATTR_INREG
);
6344 assert(out_idx
+ param_size
<= (is_sgpr
? num_out_sgpr
: num_out
));
6345 assert(is_sgpr
|| out_idx
>= num_out_sgpr
);
6347 if (param_size
== 1)
6350 arg
= lp_build_gather_values(&ctx
->gallivm
, &out
[out_idx
], param_size
);
6352 if (LLVMTypeOf(arg
) != param_type
) {
6353 if (LLVMGetTypeKind(param_type
) == LLVMPointerTypeKind
) {
6354 arg
= LLVMBuildBitCast(builder
, arg
, ctx
->i64
, "");
6355 arg
= LLVMBuildIntToPtr(builder
, arg
, param_type
, "");
6357 arg
= LLVMBuildBitCast(builder
, arg
, param_type
, "");
6361 in
[param_idx
] = arg
;
6362 out_idx
+= param_size
;
6365 ret
= LLVMBuildCall(builder
, parts
[part
], in
, num_params
, "");
6367 if (is_merged_shader(ctx
->shader
) &&
6368 part
+ 1 == next_shader_first_part
) {
6369 lp_build_endif(&if_state
);
6371 /* The second half of the merged shader should use
6372 * the inputs from the toplevel (wrapper) function,
6373 * not the return value from the last call.
6375 * That's because the last call was executed condi-
6376 * tionally, so we can't consume it in the main
6379 memcpy(out
, initial
, sizeof(initial
));
6380 num_out
= initial_num_out
;
6381 num_out_sgpr
= initial_num_out_sgpr
;
6385 /* Extract the returned GPRs. */
6386 ret_type
= LLVMTypeOf(ret
);
6390 if (LLVMGetTypeKind(ret_type
) != LLVMVoidTypeKind
) {
6391 assert(LLVMGetTypeKind(ret_type
) == LLVMStructTypeKind
);
6393 unsigned ret_size
= LLVMCountStructElementTypes(ret_type
);
6395 for (unsigned i
= 0; i
< ret_size
; ++i
) {
6397 LLVMBuildExtractValue(builder
, ret
, i
, "");
6399 assert(num_out
< ARRAY_SIZE(out
));
6400 out
[num_out
++] = val
;
6402 if (LLVMTypeOf(val
) == ctx
->i32
) {
6403 assert(num_out_sgpr
+ 1 == num_out
);
6404 num_out_sgpr
= num_out
;
6410 LLVMBuildRetVoid(builder
);
6413 int si_compile_tgsi_shader(struct si_screen
*sscreen
,
6414 LLVMTargetMachineRef tm
,
6415 struct si_shader
*shader
,
6417 struct pipe_debug_callback
*debug
)
6419 struct si_shader_selector
*sel
= shader
->selector
;
6420 struct si_shader_context ctx
;
6423 /* Dump TGSI code before doing TGSI->LLVM conversion in case the
6424 * conversion fails. */
6425 if (si_can_dump_shader(&sscreen
->b
, sel
->info
.processor
) &&
6426 !(sscreen
->b
.debug_flags
& DBG(NO_TGSI
))) {
6428 tgsi_dump(sel
->tokens
, 0);
6430 nir_print_shader(sel
->nir
, stderr
);
6431 si_dump_streamout(&sel
->so
);
6434 si_init_shader_ctx(&ctx
, sscreen
, tm
);
6435 si_llvm_context_set_tgsi(&ctx
, shader
);
6436 ctx
.separate_prolog
= !is_monolithic
;
6438 memset(shader
->info
.vs_output_param_offset
, AC_EXP_PARAM_UNDEFINED
,
6439 sizeof(shader
->info
.vs_output_param_offset
));
6441 shader
->info
.uses_instanceid
= sel
->info
.uses_instanceid
;
6443 if (!si_compile_tgsi_main(&ctx
, is_monolithic
)) {
6444 si_llvm_dispose(&ctx
);
6448 if (is_monolithic
&& ctx
.type
== PIPE_SHADER_VERTEX
) {
6449 LLVMValueRef parts
[2];
6450 bool need_prolog
= sel
->vs_needs_prolog
;
6452 parts
[1] = ctx
.main_fn
;
6455 union si_shader_part_key prolog_key
;
6456 si_get_vs_prolog_key(&sel
->info
,
6457 shader
->info
.num_input_sgprs
,
6458 &shader
->key
.part
.vs
.prolog
,
6459 shader
, &prolog_key
);
6460 si_build_vs_prolog_function(&ctx
, &prolog_key
);
6461 parts
[0] = ctx
.main_fn
;
6464 si_build_wrapper_function(&ctx
, parts
+ !need_prolog
,
6465 1 + need_prolog
, need_prolog
, 0);
6466 } else if (is_monolithic
&& ctx
.type
== PIPE_SHADER_TESS_CTRL
) {
6467 if (sscreen
->b
.chip_class
>= GFX9
) {
6468 struct si_shader_selector
*ls
= shader
->key
.part
.tcs
.ls
;
6469 LLVMValueRef parts
[4];
6470 bool vs_needs_prolog
=
6471 si_vs_needs_prolog(ls
, &shader
->key
.part
.tcs
.ls_prolog
);
6474 parts
[2] = ctx
.main_fn
;
6477 union si_shader_part_key tcs_epilog_key
;
6478 memset(&tcs_epilog_key
, 0, sizeof(tcs_epilog_key
));
6479 tcs_epilog_key
.tcs_epilog
.states
= shader
->key
.part
.tcs
.epilog
;
6480 si_build_tcs_epilog_function(&ctx
, &tcs_epilog_key
);
6481 parts
[3] = ctx
.main_fn
;
6484 if (vs_needs_prolog
) {
6485 union si_shader_part_key vs_prolog_key
;
6486 si_get_vs_prolog_key(&ls
->info
,
6487 shader
->info
.num_input_sgprs
,
6488 &shader
->key
.part
.tcs
.ls_prolog
,
6489 shader
, &vs_prolog_key
);
6490 vs_prolog_key
.vs_prolog
.is_monolithic
= true;
6491 si_build_vs_prolog_function(&ctx
, &vs_prolog_key
);
6492 parts
[0] = ctx
.main_fn
;
6495 /* VS as LS main part */
6496 struct si_shader shader_ls
= {};
6497 shader_ls
.selector
= ls
;
6498 shader_ls
.key
.as_ls
= 1;
6499 shader_ls
.key
.mono
= shader
->key
.mono
;
6500 shader_ls
.key
.opt
= shader
->key
.opt
;
6501 si_llvm_context_set_tgsi(&ctx
, &shader_ls
);
6503 if (!si_compile_tgsi_main(&ctx
, true)) {
6504 si_llvm_dispose(&ctx
);
6507 shader
->info
.uses_instanceid
|= ls
->info
.uses_instanceid
;
6508 parts
[1] = ctx
.main_fn
;
6510 /* Reset the shader context. */
6511 ctx
.shader
= shader
;
6512 ctx
.type
= PIPE_SHADER_TESS_CTRL
;
6514 si_build_wrapper_function(&ctx
,
6515 parts
+ !vs_needs_prolog
,
6516 4 - !vs_needs_prolog
, 0,
6517 vs_needs_prolog
? 2 : 1);
6519 LLVMValueRef parts
[2];
6520 union si_shader_part_key epilog_key
;
6522 parts
[0] = ctx
.main_fn
;
6524 memset(&epilog_key
, 0, sizeof(epilog_key
));
6525 epilog_key
.tcs_epilog
.states
= shader
->key
.part
.tcs
.epilog
;
6526 si_build_tcs_epilog_function(&ctx
, &epilog_key
);
6527 parts
[1] = ctx
.main_fn
;
6529 si_build_wrapper_function(&ctx
, parts
, 2, 0, 0);
6531 } else if (is_monolithic
&& ctx
.type
== PIPE_SHADER_GEOMETRY
) {
6532 if (ctx
.screen
->b
.chip_class
>= GFX9
) {
6533 struct si_shader_selector
*es
= shader
->key
.part
.gs
.es
;
6534 LLVMValueRef es_prolog
= NULL
;
6535 LLVMValueRef es_main
= NULL
;
6536 LLVMValueRef gs_prolog
= NULL
;
6537 LLVMValueRef gs_main
= ctx
.main_fn
;
6540 union si_shader_part_key gs_prolog_key
;
6541 memset(&gs_prolog_key
, 0, sizeof(gs_prolog_key
));
6542 gs_prolog_key
.gs_prolog
.states
= shader
->key
.part
.gs
.prolog
;
6543 gs_prolog_key
.gs_prolog
.is_monolithic
= true;
6544 si_build_gs_prolog_function(&ctx
, &gs_prolog_key
);
6545 gs_prolog
= ctx
.main_fn
;
6548 if (es
->vs_needs_prolog
) {
6549 union si_shader_part_key vs_prolog_key
;
6550 si_get_vs_prolog_key(&es
->info
,
6551 shader
->info
.num_input_sgprs
,
6552 &shader
->key
.part
.tcs
.ls_prolog
,
6553 shader
, &vs_prolog_key
);
6554 vs_prolog_key
.vs_prolog
.is_monolithic
= true;
6555 si_build_vs_prolog_function(&ctx
, &vs_prolog_key
);
6556 es_prolog
= ctx
.main_fn
;
6560 struct si_shader shader_es
= {};
6561 shader_es
.selector
= es
;
6562 shader_es
.key
.as_es
= 1;
6563 shader_es
.key
.mono
= shader
->key
.mono
;
6564 shader_es
.key
.opt
= shader
->key
.opt
;
6565 si_llvm_context_set_tgsi(&ctx
, &shader_es
);
6567 if (!si_compile_tgsi_main(&ctx
, true)) {
6568 si_llvm_dispose(&ctx
);
6571 shader
->info
.uses_instanceid
|= es
->info
.uses_instanceid
;
6572 es_main
= ctx
.main_fn
;
6574 /* Reset the shader context. */
6575 ctx
.shader
= shader
;
6576 ctx
.type
= PIPE_SHADER_GEOMETRY
;
6578 /* Prepare the array of shader parts. */
6579 LLVMValueRef parts
[4];
6580 unsigned num_parts
= 0, main_part
, next_first_part
;
6583 parts
[num_parts
++] = es_prolog
;
6585 parts
[main_part
= num_parts
++] = es_main
;
6586 parts
[next_first_part
= num_parts
++] = gs_prolog
;
6587 parts
[num_parts
++] = gs_main
;
6589 si_build_wrapper_function(&ctx
, parts
, num_parts
,
6590 main_part
, next_first_part
);
6592 LLVMValueRef parts
[2];
6593 union si_shader_part_key prolog_key
;
6595 parts
[1] = ctx
.main_fn
;
6597 memset(&prolog_key
, 0, sizeof(prolog_key
));
6598 prolog_key
.gs_prolog
.states
= shader
->key
.part
.gs
.prolog
;
6599 si_build_gs_prolog_function(&ctx
, &prolog_key
);
6600 parts
[0] = ctx
.main_fn
;
6602 si_build_wrapper_function(&ctx
, parts
, 2, 1, 0);
6604 } else if (is_monolithic
&& ctx
.type
== PIPE_SHADER_FRAGMENT
) {
6605 LLVMValueRef parts
[3];
6606 union si_shader_part_key prolog_key
;
6607 union si_shader_part_key epilog_key
;
6610 si_get_ps_prolog_key(shader
, &prolog_key
, false);
6611 need_prolog
= si_need_ps_prolog(&prolog_key
);
6613 parts
[need_prolog
? 1 : 0] = ctx
.main_fn
;
6616 si_build_ps_prolog_function(&ctx
, &prolog_key
);
6617 parts
[0] = ctx
.main_fn
;
6620 si_get_ps_epilog_key(shader
, &epilog_key
);
6621 si_build_ps_epilog_function(&ctx
, &epilog_key
);
6622 parts
[need_prolog
? 2 : 1] = ctx
.main_fn
;
6624 si_build_wrapper_function(&ctx
, parts
, need_prolog
? 3 : 2,
6625 need_prolog
? 1 : 0, 0);
6628 si_llvm_optimize_module(&ctx
);
6630 /* Post-optimization transformations and analysis. */
6631 si_optimize_vs_outputs(&ctx
);
6633 if ((debug
&& debug
->debug_message
) ||
6634 si_can_dump_shader(&sscreen
->b
, ctx
.type
))
6635 si_count_scratch_private_memory(&ctx
);
6637 /* Compile to bytecode. */
6638 r
= si_compile_llvm(sscreen
, &shader
->binary
, &shader
->config
, tm
,
6639 ctx
.gallivm
.module
, debug
, ctx
.type
, "TGSI shader");
6640 si_llvm_dispose(&ctx
);
6642 fprintf(stderr
, "LLVM failed to compile shader\n");
6646 /* Validate SGPR and VGPR usage for compute to detect compiler bugs.
6647 * LLVM 3.9svn has this bug.
6649 if (sel
->type
== PIPE_SHADER_COMPUTE
) {
6650 unsigned wave_size
= 64;
6651 unsigned max_vgprs
= 256;
6652 unsigned max_sgprs
= sscreen
->b
.chip_class
>= VI
? 800 : 512;
6653 unsigned max_sgprs_per_wave
= 128;
6654 unsigned max_block_threads
= si_get_max_workgroup_size(shader
);
6655 unsigned min_waves_per_cu
= DIV_ROUND_UP(max_block_threads
, wave_size
);
6656 unsigned min_waves_per_simd
= DIV_ROUND_UP(min_waves_per_cu
, 4);
6658 max_vgprs
= max_vgprs
/ min_waves_per_simd
;
6659 max_sgprs
= MIN2(max_sgprs
/ min_waves_per_simd
, max_sgprs_per_wave
);
6661 if (shader
->config
.num_sgprs
> max_sgprs
||
6662 shader
->config
.num_vgprs
> max_vgprs
) {
6663 fprintf(stderr
, "LLVM failed to compile a shader correctly: "
6664 "SGPR:VGPR usage is %u:%u, but the hw limit is %u:%u\n",
6665 shader
->config
.num_sgprs
, shader
->config
.num_vgprs
,
6666 max_sgprs
, max_vgprs
);
6668 /* Just terminate the process, because dependent
6669 * shaders can hang due to bad input data, but use
6670 * the env var to allow shader-db to work.
6672 if (!debug_get_bool_option("SI_PASS_BAD_SHADERS", false))
6677 /* Add the scratch offset to input SGPRs. */
6678 if (shader
->config
.scratch_bytes_per_wave
&& !is_merged_shader(shader
))
6679 shader
->info
.num_input_sgprs
+= 1; /* scratch byte offset */
6681 /* Calculate the number of fragment input VGPRs. */
6682 if (ctx
.type
== PIPE_SHADER_FRAGMENT
) {
6683 shader
->info
.num_input_vgprs
= 0;
6684 shader
->info
.face_vgpr_index
= -1;
6685 shader
->info
.ancillary_vgpr_index
= -1;
6687 if (G_0286CC_PERSP_SAMPLE_ENA(shader
->config
.spi_ps_input_addr
))
6688 shader
->info
.num_input_vgprs
+= 2;
6689 if (G_0286CC_PERSP_CENTER_ENA(shader
->config
.spi_ps_input_addr
))
6690 shader
->info
.num_input_vgprs
+= 2;
6691 if (G_0286CC_PERSP_CENTROID_ENA(shader
->config
.spi_ps_input_addr
))
6692 shader
->info
.num_input_vgprs
+= 2;
6693 if (G_0286CC_PERSP_PULL_MODEL_ENA(shader
->config
.spi_ps_input_addr
))
6694 shader
->info
.num_input_vgprs
+= 3;
6695 if (G_0286CC_LINEAR_SAMPLE_ENA(shader
->config
.spi_ps_input_addr
))
6696 shader
->info
.num_input_vgprs
+= 2;
6697 if (G_0286CC_LINEAR_CENTER_ENA(shader
->config
.spi_ps_input_addr
))
6698 shader
->info
.num_input_vgprs
+= 2;
6699 if (G_0286CC_LINEAR_CENTROID_ENA(shader
->config
.spi_ps_input_addr
))
6700 shader
->info
.num_input_vgprs
+= 2;
6701 if (G_0286CC_LINE_STIPPLE_TEX_ENA(shader
->config
.spi_ps_input_addr
))
6702 shader
->info
.num_input_vgprs
+= 1;
6703 if (G_0286CC_POS_X_FLOAT_ENA(shader
->config
.spi_ps_input_addr
))
6704 shader
->info
.num_input_vgprs
+= 1;
6705 if (G_0286CC_POS_Y_FLOAT_ENA(shader
->config
.spi_ps_input_addr
))
6706 shader
->info
.num_input_vgprs
+= 1;
6707 if (G_0286CC_POS_Z_FLOAT_ENA(shader
->config
.spi_ps_input_addr
))
6708 shader
->info
.num_input_vgprs
+= 1;
6709 if (G_0286CC_POS_W_FLOAT_ENA(shader
->config
.spi_ps_input_addr
))
6710 shader
->info
.num_input_vgprs
+= 1;
6711 if (G_0286CC_FRONT_FACE_ENA(shader
->config
.spi_ps_input_addr
)) {
6712 shader
->info
.face_vgpr_index
= shader
->info
.num_input_vgprs
;
6713 shader
->info
.num_input_vgprs
+= 1;
6715 if (G_0286CC_ANCILLARY_ENA(shader
->config
.spi_ps_input_addr
)) {
6716 shader
->info
.ancillary_vgpr_index
= shader
->info
.num_input_vgprs
;
6717 shader
->info
.num_input_vgprs
+= 1;
6719 if (G_0286CC_SAMPLE_COVERAGE_ENA(shader
->config
.spi_ps_input_addr
))
6720 shader
->info
.num_input_vgprs
+= 1;
6721 if (G_0286CC_POS_FIXED_PT_ENA(shader
->config
.spi_ps_input_addr
))
6722 shader
->info
.num_input_vgprs
+= 1;
6729 * Create, compile and return a shader part (prolog or epilog).
6731 * \param sscreen screen
6732 * \param list list of shader parts of the same category
6733 * \param type shader type
6734 * \param key shader part key
6735 * \param prolog whether the part being requested is a prolog
6736 * \param tm LLVM target machine
6737 * \param debug debug callback
6738 * \param build the callback responsible for building the main function
6739 * \return non-NULL on success
6741 static struct si_shader_part
*
6742 si_get_shader_part(struct si_screen
*sscreen
,
6743 struct si_shader_part
**list
,
6744 enum pipe_shader_type type
,
6746 union si_shader_part_key
*key
,
6747 LLVMTargetMachineRef tm
,
6748 struct pipe_debug_callback
*debug
,
6749 void (*build
)(struct si_shader_context
*,
6750 union si_shader_part_key
*),
6753 struct si_shader_part
*result
;
6755 mtx_lock(&sscreen
->shader_parts_mutex
);
6757 /* Find existing. */
6758 for (result
= *list
; result
; result
= result
->next
) {
6759 if (memcmp(&result
->key
, key
, sizeof(*key
)) == 0) {
6760 mtx_unlock(&sscreen
->shader_parts_mutex
);
6765 /* Compile a new one. */
6766 result
= CALLOC_STRUCT(si_shader_part
);
6769 struct si_shader shader
= {};
6770 struct si_shader_context ctx
;
6772 si_init_shader_ctx(&ctx
, sscreen
, tm
);
6773 ctx
.shader
= &shader
;
6777 case PIPE_SHADER_VERTEX
:
6778 shader
.key
.as_ls
= key
->vs_prolog
.as_ls
;
6779 shader
.key
.as_es
= key
->vs_prolog
.as_es
;
6781 case PIPE_SHADER_TESS_CTRL
:
6783 shader
.key
.part
.tcs
.epilog
= key
->tcs_epilog
.states
;
6785 case PIPE_SHADER_GEOMETRY
:
6788 case PIPE_SHADER_FRAGMENT
:
6790 shader
.key
.part
.ps
.prolog
= key
->ps_prolog
.states
;
6792 shader
.key
.part
.ps
.epilog
= key
->ps_epilog
.states
;
6795 unreachable("bad shader part");
6801 si_llvm_optimize_module(&ctx
);
6803 if (si_compile_llvm(sscreen
, &result
->binary
, &result
->config
, tm
,
6804 ctx
.ac
.module
, debug
, ctx
.type
, name
)) {
6810 result
->next
= *list
;
6814 si_llvm_dispose(&ctx
);
6815 mtx_unlock(&sscreen
->shader_parts_mutex
);
6819 static LLVMValueRef
si_prolog_get_rw_buffers(struct si_shader_context
*ctx
)
6821 LLVMValueRef ptr
[2], list
;
6822 bool is_merged_shader
=
6823 ctx
->screen
->b
.chip_class
>= GFX9
&&
6824 (ctx
->type
== PIPE_SHADER_TESS_CTRL
||
6825 ctx
->type
== PIPE_SHADER_GEOMETRY
||
6826 ctx
->shader
->key
.as_ls
|| ctx
->shader
->key
.as_es
);
6828 /* Get the pointer to rw buffers. */
6829 ptr
[0] = LLVMGetParam(ctx
->main_fn
, (is_merged_shader
? 8 : 0) + SI_SGPR_RW_BUFFERS
);
6830 ptr
[1] = LLVMGetParam(ctx
->main_fn
, (is_merged_shader
? 8 : 0) + SI_SGPR_RW_BUFFERS_HI
);
6831 list
= lp_build_gather_values(&ctx
->gallivm
, ptr
, 2);
6832 list
= LLVMBuildBitCast(ctx
->ac
.builder
, list
, ctx
->i64
, "");
6833 list
= LLVMBuildIntToPtr(ctx
->ac
.builder
, list
,
6834 si_const_array(ctx
->v4i32
, SI_NUM_RW_BUFFERS
), "");
6839 * Build the vertex shader prolog function.
6841 * The inputs are the same as VS (a lot of SGPRs and 4 VGPR system values).
6842 * All inputs are returned unmodified. The vertex load indices are
6843 * stored after them, which will be used by the API VS for fetching inputs.
6845 * For example, the expected outputs for instance_divisors[] = {0, 1, 2} are:
6850 * (VertexID + BaseVertex),
6851 * (InstanceID + StartInstance),
6852 * (InstanceID / 2 + StartInstance)
6854 static void si_build_vs_prolog_function(struct si_shader_context
*ctx
,
6855 union si_shader_part_key
*key
)
6857 struct si_function_info fninfo
;
6858 LLVMTypeRef
*returns
;
6859 LLVMValueRef ret
, func
;
6861 unsigned first_vs_vgpr
= key
->vs_prolog
.num_merged_next_stage_vgprs
;
6862 unsigned num_input_vgprs
= key
->vs_prolog
.num_merged_next_stage_vgprs
+ 4;
6863 LLVMValueRef input_vgprs
[9];
6864 unsigned num_all_input_regs
= key
->vs_prolog
.num_input_sgprs
+
6866 unsigned user_sgpr_base
= key
->vs_prolog
.num_merged_next_stage_vgprs
? 8 : 0;
6868 si_init_function_info(&fninfo
);
6870 /* 4 preloaded VGPRs + vertex load indices as prolog outputs */
6871 returns
= alloca((num_all_input_regs
+ key
->vs_prolog
.last_input
+ 1) *
6872 sizeof(LLVMTypeRef
));
6875 /* Declare input and output SGPRs. */
6876 for (i
= 0; i
< key
->vs_prolog
.num_input_sgprs
; i
++) {
6877 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
6878 returns
[num_returns
++] = ctx
->i32
;
6881 /* Preloaded VGPRs (outputs must be floats) */
6882 for (i
= 0; i
< num_input_vgprs
; i
++) {
6883 add_arg_assign(&fninfo
, ARG_VGPR
, ctx
->i32
, &input_vgprs
[i
]);
6884 returns
[num_returns
++] = ctx
->f32
;
6887 /* Vertex load indices. */
6888 for (i
= 0; i
<= key
->vs_prolog
.last_input
; i
++)
6889 returns
[num_returns
++] = ctx
->f32
;
6891 /* Create the function. */
6892 si_create_function(ctx
, "vs_prolog", returns
, num_returns
, &fninfo
, 0);
6893 func
= ctx
->main_fn
;
6895 if (key
->vs_prolog
.num_merged_next_stage_vgprs
) {
6896 if (!key
->vs_prolog
.is_monolithic
)
6897 si_init_exec_from_input(ctx
, 3, 0);
6899 if (key
->vs_prolog
.as_ls
&&
6900 ctx
->screen
->has_ls_vgpr_init_bug
) {
6901 /* If there are no HS threads, SPI loads the LS VGPRs
6902 * starting at VGPR 0. Shift them back to where they
6905 LLVMValueRef has_hs_threads
=
6906 LLVMBuildICmp(ctx
->ac
.builder
, LLVMIntNE
,
6907 unpack_param(ctx
, 3, 8, 8),
6910 for (i
= 4; i
> 0; --i
) {
6911 input_vgprs
[i
+ 1] =
6912 LLVMBuildSelect(ctx
->ac
.builder
, has_hs_threads
,
6914 input_vgprs
[i
- 1], "");
6919 ctx
->abi
.vertex_id
= input_vgprs
[first_vs_vgpr
];
6920 ctx
->abi
.instance_id
= input_vgprs
[first_vs_vgpr
+ (key
->vs_prolog
.as_ls
? 2 : 1)];
6922 /* Copy inputs to outputs. This should be no-op, as the registers match,
6923 * but it will prevent the compiler from overwriting them unintentionally.
6925 ret
= ctx
->return_value
;
6926 for (i
= 0; i
< key
->vs_prolog
.num_input_sgprs
; i
++) {
6927 LLVMValueRef p
= LLVMGetParam(func
, i
);
6928 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, p
, i
, "");
6930 for (i
= 0; i
< num_input_vgprs
; i
++) {
6931 LLVMValueRef p
= input_vgprs
[i
];
6932 p
= ac_to_float(&ctx
->ac
, p
);
6933 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, p
,
6934 key
->vs_prolog
.num_input_sgprs
+ i
, "");
6937 /* Compute vertex load indices from instance divisors. */
6938 LLVMValueRef instance_divisor_constbuf
= NULL
;
6940 if (key
->vs_prolog
.states
.instance_divisor_is_fetched
) {
6941 LLVMValueRef list
= si_prolog_get_rw_buffers(ctx
);
6942 LLVMValueRef buf_index
=
6943 LLVMConstInt(ctx
->i32
, SI_VS_CONST_INSTANCE_DIVISORS
, 0);
6944 instance_divisor_constbuf
=
6945 ac_build_load_to_sgpr(&ctx
->ac
, list
, buf_index
);
6948 for (i
= 0; i
<= key
->vs_prolog
.last_input
; i
++) {
6949 bool divisor_is_one
=
6950 key
->vs_prolog
.states
.instance_divisor_is_one
& (1u << i
);
6951 bool divisor_is_fetched
=
6952 key
->vs_prolog
.states
.instance_divisor_is_fetched
& (1u << i
);
6955 if (divisor_is_one
|| divisor_is_fetched
) {
6956 LLVMValueRef divisor
= ctx
->i32_1
;
6958 if (divisor_is_fetched
) {
6959 divisor
= buffer_load_const(ctx
, instance_divisor_constbuf
,
6960 LLVMConstInt(ctx
->i32
, i
* 4, 0));
6961 divisor
= ac_to_integer(&ctx
->ac
, divisor
);
6964 /* InstanceID / Divisor + StartInstance */
6965 index
= get_instance_index_for_fetch(ctx
,
6967 SI_SGPR_START_INSTANCE
,
6970 /* VertexID + BaseVertex */
6971 index
= LLVMBuildAdd(ctx
->ac
.builder
,
6973 LLVMGetParam(func
, user_sgpr_base
+
6974 SI_SGPR_BASE_VERTEX
), "");
6977 index
= ac_to_float(&ctx
->ac
, index
);
6978 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, index
,
6979 fninfo
.num_params
+ i
, "");
6982 si_llvm_build_ret(ctx
, ret
);
6985 static bool si_get_vs_prolog(struct si_screen
*sscreen
,
6986 LLVMTargetMachineRef tm
,
6987 struct si_shader
*shader
,
6988 struct pipe_debug_callback
*debug
,
6989 struct si_shader
*main_part
,
6990 const struct si_vs_prolog_bits
*key
)
6992 struct si_shader_selector
*vs
= main_part
->selector
;
6994 if (!si_vs_needs_prolog(vs
, key
))
6997 /* Get the prolog. */
6998 union si_shader_part_key prolog_key
;
6999 si_get_vs_prolog_key(&vs
->info
, main_part
->info
.num_input_sgprs
,
7000 key
, shader
, &prolog_key
);
7003 si_get_shader_part(sscreen
, &sscreen
->vs_prologs
,
7004 PIPE_SHADER_VERTEX
, true, &prolog_key
, tm
,
7005 debug
, si_build_vs_prolog_function
,
7006 "Vertex Shader Prolog");
7007 return shader
->prolog
!= NULL
;
7011 * Select and compile (or reuse) vertex shader parts (prolog & epilog).
7013 static bool si_shader_select_vs_parts(struct si_screen
*sscreen
,
7014 LLVMTargetMachineRef tm
,
7015 struct si_shader
*shader
,
7016 struct pipe_debug_callback
*debug
)
7018 return si_get_vs_prolog(sscreen
, tm
, shader
, debug
, shader
,
7019 &shader
->key
.part
.vs
.prolog
);
7023 * Compile the TCS epilog function. This writes tesselation factors to memory
7024 * based on the output primitive type of the tesselator (determined by TES).
7026 static void si_build_tcs_epilog_function(struct si_shader_context
*ctx
,
7027 union si_shader_part_key
*key
)
7029 struct lp_build_tgsi_context
*bld_base
= &ctx
->bld_base
;
7030 struct si_function_info fninfo
;
7033 si_init_function_info(&fninfo
);
7035 if (ctx
->screen
->b
.chip_class
>= GFX9
) {
7036 add_arg(&fninfo
, ARG_SGPR
, ctx
->i64
);
7037 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7038 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
); /* wave info */
7039 ctx
->param_tcs_factor_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7040 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7041 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7042 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7043 add_arg(&fninfo
, ARG_SGPR
, ctx
->i64
);
7044 add_arg(&fninfo
, ARG_SGPR
, ctx
->i64
);
7045 add_arg(&fninfo
, ARG_SGPR
, ctx
->i64
);
7046 add_arg(&fninfo
, ARG_SGPR
, ctx
->i64
);
7047 add_arg(&fninfo
, ARG_SGPR
, ctx
->i64
);
7048 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7049 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7050 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7051 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7052 ctx
->param_tcs_offchip_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7053 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7054 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7055 ctx
->param_tcs_offchip_addr_base64k
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7056 ctx
->param_tcs_factor_addr_base64k
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7058 add_arg(&fninfo
, ARG_SGPR
, ctx
->i64
);
7059 add_arg(&fninfo
, ARG_SGPR
, ctx
->i64
);
7060 add_arg(&fninfo
, ARG_SGPR
, ctx
->i64
);
7061 add_arg(&fninfo
, ARG_SGPR
, ctx
->i64
);
7062 ctx
->param_tcs_offchip_layout
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7063 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7064 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7065 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7066 ctx
->param_tcs_offchip_addr_base64k
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7067 ctx
->param_tcs_factor_addr_base64k
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7068 ctx
->param_tcs_offchip_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7069 ctx
->param_tcs_factor_offset
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7072 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
); /* VGPR gap */
7073 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
); /* VGPR gap */
7074 unsigned tess_factors_idx
=
7075 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
); /* patch index within the wave (REL_PATCH_ID) */
7076 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
); /* invocation ID within the patch */
7077 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
); /* LDS offset where tess factors should be loaded from */
7079 for (unsigned i
= 0; i
< 6; i
++)
7080 add_arg(&fninfo
, ARG_VGPR
, ctx
->i32
); /* tess factors */
7082 /* Create the function. */
7083 si_create_function(ctx
, "tcs_epilog", NULL
, 0, &fninfo
,
7084 ctx
->screen
->b
.chip_class
>= CIK
? 128 : 64);
7085 ac_declare_lds_as_pointer(&ctx
->ac
);
7086 func
= ctx
->main_fn
;
7088 LLVMValueRef invoc0_tess_factors
[6];
7089 for (unsigned i
= 0; i
< 6; i
++)
7090 invoc0_tess_factors
[i
] = LLVMGetParam(func
, tess_factors_idx
+ 3 + i
);
7092 si_write_tess_factors(bld_base
,
7093 LLVMGetParam(func
, tess_factors_idx
),
7094 LLVMGetParam(func
, tess_factors_idx
+ 1),
7095 LLVMGetParam(func
, tess_factors_idx
+ 2),
7096 invoc0_tess_factors
, invoc0_tess_factors
+ 4);
7098 LLVMBuildRetVoid(ctx
->ac
.builder
);
7102 * Select and compile (or reuse) TCS parts (epilog).
7104 static bool si_shader_select_tcs_parts(struct si_screen
*sscreen
,
7105 LLVMTargetMachineRef tm
,
7106 struct si_shader
*shader
,
7107 struct pipe_debug_callback
*debug
)
7109 if (sscreen
->b
.chip_class
>= GFX9
) {
7110 struct si_shader
*ls_main_part
=
7111 shader
->key
.part
.tcs
.ls
->main_shader_part_ls
;
7113 if (!si_get_vs_prolog(sscreen
, tm
, shader
, debug
, ls_main_part
,
7114 &shader
->key
.part
.tcs
.ls_prolog
))
7117 shader
->previous_stage
= ls_main_part
;
7120 /* Get the epilog. */
7121 union si_shader_part_key epilog_key
;
7122 memset(&epilog_key
, 0, sizeof(epilog_key
));
7123 epilog_key
.tcs_epilog
.states
= shader
->key
.part
.tcs
.epilog
;
7125 shader
->epilog
= si_get_shader_part(sscreen
, &sscreen
->tcs_epilogs
,
7126 PIPE_SHADER_TESS_CTRL
, false,
7127 &epilog_key
, tm
, debug
,
7128 si_build_tcs_epilog_function
,
7129 "Tessellation Control Shader Epilog");
7130 return shader
->epilog
!= NULL
;
7134 * Select and compile (or reuse) GS parts (prolog).
7136 static bool si_shader_select_gs_parts(struct si_screen
*sscreen
,
7137 LLVMTargetMachineRef tm
,
7138 struct si_shader
*shader
,
7139 struct pipe_debug_callback
*debug
)
7141 if (sscreen
->b
.chip_class
>= GFX9
) {
7142 struct si_shader
*es_main_part
=
7143 shader
->key
.part
.gs
.es
->main_shader_part_es
;
7145 if (shader
->key
.part
.gs
.es
->type
== PIPE_SHADER_VERTEX
&&
7146 !si_get_vs_prolog(sscreen
, tm
, shader
, debug
, es_main_part
,
7147 &shader
->key
.part
.gs
.vs_prolog
))
7150 shader
->previous_stage
= es_main_part
;
7153 if (!shader
->key
.part
.gs
.prolog
.tri_strip_adj_fix
)
7156 union si_shader_part_key prolog_key
;
7157 memset(&prolog_key
, 0, sizeof(prolog_key
));
7158 prolog_key
.gs_prolog
.states
= shader
->key
.part
.gs
.prolog
;
7160 shader
->prolog2
= si_get_shader_part(sscreen
, &sscreen
->gs_prologs
,
7161 PIPE_SHADER_GEOMETRY
, true,
7162 &prolog_key
, tm
, debug
,
7163 si_build_gs_prolog_function
,
7164 "Geometry Shader Prolog");
7165 return shader
->prolog2
!= NULL
;
7169 * Build the pixel shader prolog function. This handles:
7170 * - two-side color selection and interpolation
7171 * - overriding interpolation parameters for the API PS
7172 * - polygon stippling
7174 * All preloaded SGPRs and VGPRs are passed through unmodified unless they are
7175 * overriden by other states. (e.g. per-sample interpolation)
7176 * Interpolated colors are stored after the preloaded VGPRs.
7178 static void si_build_ps_prolog_function(struct si_shader_context
*ctx
,
7179 union si_shader_part_key
*key
)
7181 struct si_function_info fninfo
;
7182 LLVMValueRef ret
, func
;
7183 int num_returns
, i
, num_color_channels
;
7185 assert(si_need_ps_prolog(key
));
7187 si_init_function_info(&fninfo
);
7189 /* Declare inputs. */
7190 for (i
= 0; i
< key
->ps_prolog
.num_input_sgprs
; i
++)
7191 add_arg(&fninfo
, ARG_SGPR
, ctx
->i32
);
7193 for (i
= 0; i
< key
->ps_prolog
.num_input_vgprs
; i
++)
7194 add_arg(&fninfo
, ARG_VGPR
, ctx
->f32
);
7196 /* Declare outputs (same as inputs + add colors if needed) */
7197 num_returns
= fninfo
.num_params
;
7198 num_color_channels
= util_bitcount(key
->ps_prolog
.colors_read
);
7199 for (i
= 0; i
< num_color_channels
; i
++)
7200 fninfo
.types
[num_returns
++] = ctx
->f32
;
7202 /* Create the function. */
7203 si_create_function(ctx
, "ps_prolog", fninfo
.types
, num_returns
,
7205 func
= ctx
->main_fn
;
7207 /* Copy inputs to outputs. This should be no-op, as the registers match,
7208 * but it will prevent the compiler from overwriting them unintentionally.
7210 ret
= ctx
->return_value
;
7211 for (i
= 0; i
< fninfo
.num_params
; i
++) {
7212 LLVMValueRef p
= LLVMGetParam(func
, i
);
7213 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, p
, i
, "");
7216 /* Polygon stippling. */
7217 if (key
->ps_prolog
.states
.poly_stipple
) {
7218 /* POS_FIXED_PT is always last. */
7219 unsigned pos
= key
->ps_prolog
.num_input_sgprs
+
7220 key
->ps_prolog
.num_input_vgprs
- 1;
7221 LLVMValueRef list
= si_prolog_get_rw_buffers(ctx
);
7223 si_llvm_emit_polygon_stipple(ctx
, list
, pos
);
7226 if (key
->ps_prolog
.states
.bc_optimize_for_persp
||
7227 key
->ps_prolog
.states
.bc_optimize_for_linear
) {
7228 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
7229 LLVMValueRef center
[2], centroid
[2], tmp
, bc_optimize
;
7231 /* The shader should do: if (PRIM_MASK[31]) CENTROID = CENTER;
7232 * The hw doesn't compute CENTROID if the whole wave only
7233 * contains fully-covered quads.
7235 * PRIM_MASK is after user SGPRs.
7237 bc_optimize
= LLVMGetParam(func
, SI_PS_NUM_USER_SGPR
);
7238 bc_optimize
= LLVMBuildLShr(ctx
->ac
.builder
, bc_optimize
,
7239 LLVMConstInt(ctx
->i32
, 31, 0), "");
7240 bc_optimize
= LLVMBuildTrunc(ctx
->ac
.builder
, bc_optimize
,
7243 if (key
->ps_prolog
.states
.bc_optimize_for_persp
) {
7244 /* Read PERSP_CENTER. */
7245 for (i
= 0; i
< 2; i
++)
7246 center
[i
] = LLVMGetParam(func
, base
+ 2 + i
);
7247 /* Read PERSP_CENTROID. */
7248 for (i
= 0; i
< 2; i
++)
7249 centroid
[i
] = LLVMGetParam(func
, base
+ 4 + i
);
7250 /* Select PERSP_CENTROID. */
7251 for (i
= 0; i
< 2; i
++) {
7252 tmp
= LLVMBuildSelect(ctx
->ac
.builder
, bc_optimize
,
7253 center
[i
], centroid
[i
], "");
7254 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7255 tmp
, base
+ 4 + i
, "");
7258 if (key
->ps_prolog
.states
.bc_optimize_for_linear
) {
7259 /* Read LINEAR_CENTER. */
7260 for (i
= 0; i
< 2; i
++)
7261 center
[i
] = LLVMGetParam(func
, base
+ 8 + i
);
7262 /* Read LINEAR_CENTROID. */
7263 for (i
= 0; i
< 2; i
++)
7264 centroid
[i
] = LLVMGetParam(func
, base
+ 10 + i
);
7265 /* Select LINEAR_CENTROID. */
7266 for (i
= 0; i
< 2; i
++) {
7267 tmp
= LLVMBuildSelect(ctx
->ac
.builder
, bc_optimize
,
7268 center
[i
], centroid
[i
], "");
7269 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7270 tmp
, base
+ 10 + i
, "");
7275 /* Force per-sample interpolation. */
7276 if (key
->ps_prolog
.states
.force_persp_sample_interp
) {
7277 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
7278 LLVMValueRef persp_sample
[2];
7280 /* Read PERSP_SAMPLE. */
7281 for (i
= 0; i
< 2; i
++)
7282 persp_sample
[i
] = LLVMGetParam(func
, base
+ i
);
7283 /* Overwrite PERSP_CENTER. */
7284 for (i
= 0; i
< 2; i
++)
7285 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7286 persp_sample
[i
], base
+ 2 + i
, "");
7287 /* Overwrite PERSP_CENTROID. */
7288 for (i
= 0; i
< 2; i
++)
7289 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7290 persp_sample
[i
], base
+ 4 + i
, "");
7292 if (key
->ps_prolog
.states
.force_linear_sample_interp
) {
7293 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
7294 LLVMValueRef linear_sample
[2];
7296 /* Read LINEAR_SAMPLE. */
7297 for (i
= 0; i
< 2; i
++)
7298 linear_sample
[i
] = LLVMGetParam(func
, base
+ 6 + i
);
7299 /* Overwrite LINEAR_CENTER. */
7300 for (i
= 0; i
< 2; i
++)
7301 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7302 linear_sample
[i
], base
+ 8 + i
, "");
7303 /* Overwrite LINEAR_CENTROID. */
7304 for (i
= 0; i
< 2; i
++)
7305 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7306 linear_sample
[i
], base
+ 10 + i
, "");
7309 /* Force center interpolation. */
7310 if (key
->ps_prolog
.states
.force_persp_center_interp
) {
7311 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
7312 LLVMValueRef persp_center
[2];
7314 /* Read PERSP_CENTER. */
7315 for (i
= 0; i
< 2; i
++)
7316 persp_center
[i
] = LLVMGetParam(func
, base
+ 2 + i
);
7317 /* Overwrite PERSP_SAMPLE. */
7318 for (i
= 0; i
< 2; i
++)
7319 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7320 persp_center
[i
], base
+ i
, "");
7321 /* Overwrite PERSP_CENTROID. */
7322 for (i
= 0; i
< 2; i
++)
7323 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7324 persp_center
[i
], base
+ 4 + i
, "");
7326 if (key
->ps_prolog
.states
.force_linear_center_interp
) {
7327 unsigned i
, base
= key
->ps_prolog
.num_input_sgprs
;
7328 LLVMValueRef linear_center
[2];
7330 /* Read LINEAR_CENTER. */
7331 for (i
= 0; i
< 2; i
++)
7332 linear_center
[i
] = LLVMGetParam(func
, base
+ 8 + i
);
7333 /* Overwrite LINEAR_SAMPLE. */
7334 for (i
= 0; i
< 2; i
++)
7335 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7336 linear_center
[i
], base
+ 6 + i
, "");
7337 /* Overwrite LINEAR_CENTROID. */
7338 for (i
= 0; i
< 2; i
++)
7339 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
,
7340 linear_center
[i
], base
+ 10 + i
, "");
7343 /* Interpolate colors. */
7344 unsigned color_out_idx
= 0;
7345 for (i
= 0; i
< 2; i
++) {
7346 unsigned writemask
= (key
->ps_prolog
.colors_read
>> (i
* 4)) & 0xf;
7347 unsigned face_vgpr
= key
->ps_prolog
.num_input_sgprs
+
7348 key
->ps_prolog
.face_vgpr_index
;
7349 LLVMValueRef interp
[2], color
[4];
7350 LLVMValueRef interp_ij
= NULL
, prim_mask
= NULL
, face
= NULL
;
7355 /* If the interpolation qualifier is not CONSTANT (-1). */
7356 if (key
->ps_prolog
.color_interp_vgpr_index
[i
] != -1) {
7357 unsigned interp_vgpr
= key
->ps_prolog
.num_input_sgprs
+
7358 key
->ps_prolog
.color_interp_vgpr_index
[i
];
7360 /* Get the (i,j) updated by bc_optimize handling. */
7361 interp
[0] = LLVMBuildExtractValue(ctx
->ac
.builder
, ret
,
7363 interp
[1] = LLVMBuildExtractValue(ctx
->ac
.builder
, ret
,
7364 interp_vgpr
+ 1, "");
7365 interp_ij
= lp_build_gather_values(&ctx
->gallivm
, interp
, 2);
7368 /* Use the absolute location of the input. */
7369 prim_mask
= LLVMGetParam(func
, SI_PS_NUM_USER_SGPR
);
7371 if (key
->ps_prolog
.states
.color_two_side
) {
7372 face
= LLVMGetParam(func
, face_vgpr
);
7373 face
= ac_to_integer(&ctx
->ac
, face
);
7376 interp_fs_input(ctx
,
7377 key
->ps_prolog
.color_attr_index
[i
],
7378 TGSI_SEMANTIC_COLOR
, i
,
7379 key
->ps_prolog
.num_interp_inputs
,
7380 key
->ps_prolog
.colors_read
, interp_ij
,
7381 prim_mask
, face
, color
);
7384 unsigned chan
= u_bit_scan(&writemask
);
7385 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, color
[chan
],
7386 fninfo
.num_params
+ color_out_idx
++, "");
7390 /* Section 15.2.2 (Shader Inputs) of the OpenGL 4.5 (Core Profile) spec
7393 * "When per-sample shading is active due to the use of a fragment
7394 * input qualified by sample or due to the use of the gl_SampleID
7395 * or gl_SamplePosition variables, only the bit for the current
7396 * sample is set in gl_SampleMaskIn. When state specifies multiple
7397 * fragment shader invocations for a given fragment, the sample
7398 * mask for any single fragment shader invocation may specify a
7399 * subset of the covered samples for the fragment. In this case,
7400 * the bit corresponding to each covered sample will be set in
7401 * exactly one fragment shader invocation."
7403 * The samplemask loaded by hardware is always the coverage of the
7404 * entire pixel/fragment, so mask bits out based on the sample ID.
7406 if (key
->ps_prolog
.states
.samplemask_log_ps_iter
) {
7407 /* The bit pattern matches that used by fixed function fragment
7409 static const uint16_t ps_iter_masks
[] = {
7410 0xffff, /* not used */
7416 assert(key
->ps_prolog
.states
.samplemask_log_ps_iter
< ARRAY_SIZE(ps_iter_masks
));
7418 uint32_t ps_iter_mask
= ps_iter_masks
[key
->ps_prolog
.states
.samplemask_log_ps_iter
];
7419 unsigned ancillary_vgpr
= key
->ps_prolog
.num_input_sgprs
+
7420 key
->ps_prolog
.ancillary_vgpr_index
;
7421 LLVMValueRef sampleid
= unpack_param(ctx
, ancillary_vgpr
, 8, 4);
7422 LLVMValueRef samplemask
= LLVMGetParam(func
, ancillary_vgpr
+ 1);
7424 samplemask
= ac_to_integer(&ctx
->ac
, samplemask
);
7425 samplemask
= LLVMBuildAnd(
7428 LLVMBuildShl(ctx
->ac
.builder
,
7429 LLVMConstInt(ctx
->i32
, ps_iter_mask
, false),
7432 samplemask
= ac_to_float(&ctx
->ac
, samplemask
);
7434 ret
= LLVMBuildInsertValue(ctx
->ac
.builder
, ret
, samplemask
,
7435 ancillary_vgpr
+ 1, "");
7438 /* Tell LLVM to insert WQM instruction sequence when needed. */
7439 if (key
->ps_prolog
.wqm
) {
7440 LLVMAddTargetDependentFunctionAttr(func
,
7441 "amdgpu-ps-wqm-outputs", "");
7444 si_llvm_build_ret(ctx
, ret
);
7448 * Build the pixel shader epilog function. This handles everything that must be
7449 * emulated for pixel shader exports. (alpha-test, format conversions, etc)
7451 static void si_build_ps_epilog_function(struct si_shader_context
*ctx
,
7452 union si_shader_part_key
*key
)
7454 struct lp_build_tgsi_context
*bld_base
= &ctx
->bld_base
;
7455 struct si_function_info fninfo
;
7456 LLVMValueRef depth
= NULL
, stencil
= NULL
, samplemask
= NULL
;
7458 struct si_ps_exports exp
= {};
7460 si_init_function_info(&fninfo
);
7462 /* Declare input SGPRs. */
7463 ctx
->param_rw_buffers
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i64
);
7464 ctx
->param_bindless_samplers_and_images
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i64
);
7465 ctx
->param_const_and_shader_buffers
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i64
);
7466 ctx
->param_samplers_and_images
= add_arg(&fninfo
, ARG_SGPR
, ctx
->i64
);
7467 add_arg_checked(&fninfo
, ARG_SGPR
, ctx
->f32
, SI_PARAM_ALPHA_REF
);
7469 /* Declare input VGPRs. */
7470 unsigned required_num_params
=
7471 fninfo
.num_sgpr_params
+
7472 util_bitcount(key
->ps_epilog
.colors_written
) * 4 +
7473 key
->ps_epilog
.writes_z
+
7474 key
->ps_epilog
.writes_stencil
+
7475 key
->ps_epilog
.writes_samplemask
;
7477 required_num_params
= MAX2(required_num_params
,
7478 fninfo
.num_sgpr_params
+ PS_EPILOG_SAMPLEMASK_MIN_LOC
+ 1);
7480 while (fninfo
.num_params
< required_num_params
)
7481 add_arg(&fninfo
, ARG_VGPR
, ctx
->f32
);
7483 /* Create the function. */
7484 si_create_function(ctx
, "ps_epilog", NULL
, 0, &fninfo
, 0);
7485 /* Disable elimination of unused inputs. */
7486 si_llvm_add_attribute(ctx
->main_fn
,
7487 "InitialPSInputAddr", 0xffffff);
7489 /* Process colors. */
7490 unsigned vgpr
= fninfo
.num_sgpr_params
;
7491 unsigned colors_written
= key
->ps_epilog
.colors_written
;
7492 int last_color_export
= -1;
7494 /* Find the last color export. */
7495 if (!key
->ps_epilog
.writes_z
&&
7496 !key
->ps_epilog
.writes_stencil
&&
7497 !key
->ps_epilog
.writes_samplemask
) {
7498 unsigned spi_format
= key
->ps_epilog
.states
.spi_shader_col_format
;
7500 /* If last_cbuf > 0, FS_COLOR0_WRITES_ALL_CBUFS is true. */
7501 if (colors_written
== 0x1 && key
->ps_epilog
.states
.last_cbuf
> 0) {
7502 /* Just set this if any of the colorbuffers are enabled. */
7504 ((1ull << (4 * (key
->ps_epilog
.states
.last_cbuf
+ 1))) - 1))
7505 last_color_export
= 0;
7507 for (i
= 0; i
< 8; i
++)
7508 if (colors_written
& (1 << i
) &&
7509 (spi_format
>> (i
* 4)) & 0xf)
7510 last_color_export
= i
;
7514 while (colors_written
) {
7515 LLVMValueRef color
[4];
7516 int mrt
= u_bit_scan(&colors_written
);
7518 for (i
= 0; i
< 4; i
++)
7519 color
[i
] = LLVMGetParam(ctx
->main_fn
, vgpr
++);
7521 si_export_mrt_color(bld_base
, color
, mrt
,
7522 fninfo
.num_params
- 1,
7523 mrt
== last_color_export
, &exp
);
7526 /* Process depth, stencil, samplemask. */
7527 if (key
->ps_epilog
.writes_z
)
7528 depth
= LLVMGetParam(ctx
->main_fn
, vgpr
++);
7529 if (key
->ps_epilog
.writes_stencil
)
7530 stencil
= LLVMGetParam(ctx
->main_fn
, vgpr
++);
7531 if (key
->ps_epilog
.writes_samplemask
)
7532 samplemask
= LLVMGetParam(ctx
->main_fn
, vgpr
++);
7534 if (depth
|| stencil
|| samplemask
)
7535 si_export_mrt_z(bld_base
, depth
, stencil
, samplemask
, &exp
);
7536 else if (last_color_export
== -1)
7537 si_export_null(bld_base
);
7540 si_emit_ps_exports(ctx
, &exp
);
7543 LLVMBuildRetVoid(ctx
->ac
.builder
);
7547 * Select and compile (or reuse) pixel shader parts (prolog & epilog).
7549 static bool si_shader_select_ps_parts(struct si_screen
*sscreen
,
7550 LLVMTargetMachineRef tm
,
7551 struct si_shader
*shader
,
7552 struct pipe_debug_callback
*debug
)
7554 union si_shader_part_key prolog_key
;
7555 union si_shader_part_key epilog_key
;
7557 /* Get the prolog. */
7558 si_get_ps_prolog_key(shader
, &prolog_key
, true);
7560 /* The prolog is a no-op if these aren't set. */
7561 if (si_need_ps_prolog(&prolog_key
)) {
7563 si_get_shader_part(sscreen
, &sscreen
->ps_prologs
,
7564 PIPE_SHADER_FRAGMENT
, true,
7565 &prolog_key
, tm
, debug
,
7566 si_build_ps_prolog_function
,
7567 "Fragment Shader Prolog");
7568 if (!shader
->prolog
)
7572 /* Get the epilog. */
7573 si_get_ps_epilog_key(shader
, &epilog_key
);
7576 si_get_shader_part(sscreen
, &sscreen
->ps_epilogs
,
7577 PIPE_SHADER_FRAGMENT
, false,
7578 &epilog_key
, tm
, debug
,
7579 si_build_ps_epilog_function
,
7580 "Fragment Shader Epilog");
7581 if (!shader
->epilog
)
7584 /* Enable POS_FIXED_PT if polygon stippling is enabled. */
7585 if (shader
->key
.part
.ps
.prolog
.poly_stipple
) {
7586 shader
->config
.spi_ps_input_ena
|= S_0286CC_POS_FIXED_PT_ENA(1);
7587 assert(G_0286CC_POS_FIXED_PT_ENA(shader
->config
.spi_ps_input_addr
));
7590 /* Set up the enable bits for per-sample shading if needed. */
7591 if (shader
->key
.part
.ps
.prolog
.force_persp_sample_interp
&&
7592 (G_0286CC_PERSP_CENTER_ENA(shader
->config
.spi_ps_input_ena
) ||
7593 G_0286CC_PERSP_CENTROID_ENA(shader
->config
.spi_ps_input_ena
))) {
7594 shader
->config
.spi_ps_input_ena
&= C_0286CC_PERSP_CENTER_ENA
;
7595 shader
->config
.spi_ps_input_ena
&= C_0286CC_PERSP_CENTROID_ENA
;
7596 shader
->config
.spi_ps_input_ena
|= S_0286CC_PERSP_SAMPLE_ENA(1);
7598 if (shader
->key
.part
.ps
.prolog
.force_linear_sample_interp
&&
7599 (G_0286CC_LINEAR_CENTER_ENA(shader
->config
.spi_ps_input_ena
) ||
7600 G_0286CC_LINEAR_CENTROID_ENA(shader
->config
.spi_ps_input_ena
))) {
7601 shader
->config
.spi_ps_input_ena
&= C_0286CC_LINEAR_CENTER_ENA
;
7602 shader
->config
.spi_ps_input_ena
&= C_0286CC_LINEAR_CENTROID_ENA
;
7603 shader
->config
.spi_ps_input_ena
|= S_0286CC_LINEAR_SAMPLE_ENA(1);
7605 if (shader
->key
.part
.ps
.prolog
.force_persp_center_interp
&&
7606 (G_0286CC_PERSP_SAMPLE_ENA(shader
->config
.spi_ps_input_ena
) ||
7607 G_0286CC_PERSP_CENTROID_ENA(shader
->config
.spi_ps_input_ena
))) {
7608 shader
->config
.spi_ps_input_ena
&= C_0286CC_PERSP_SAMPLE_ENA
;
7609 shader
->config
.spi_ps_input_ena
&= C_0286CC_PERSP_CENTROID_ENA
;
7610 shader
->config
.spi_ps_input_ena
|= S_0286CC_PERSP_CENTER_ENA(1);
7612 if (shader
->key
.part
.ps
.prolog
.force_linear_center_interp
&&
7613 (G_0286CC_LINEAR_SAMPLE_ENA(shader
->config
.spi_ps_input_ena
) ||
7614 G_0286CC_LINEAR_CENTROID_ENA(shader
->config
.spi_ps_input_ena
))) {
7615 shader
->config
.spi_ps_input_ena
&= C_0286CC_LINEAR_SAMPLE_ENA
;
7616 shader
->config
.spi_ps_input_ena
&= C_0286CC_LINEAR_CENTROID_ENA
;
7617 shader
->config
.spi_ps_input_ena
|= S_0286CC_LINEAR_CENTER_ENA(1);
7620 /* POW_W_FLOAT requires that one of the perspective weights is enabled. */
7621 if (G_0286CC_POS_W_FLOAT_ENA(shader
->config
.spi_ps_input_ena
) &&
7622 !(shader
->config
.spi_ps_input_ena
& 0xf)) {
7623 shader
->config
.spi_ps_input_ena
|= S_0286CC_PERSP_CENTER_ENA(1);
7624 assert(G_0286CC_PERSP_CENTER_ENA(shader
->config
.spi_ps_input_addr
));
7627 /* At least one pair of interpolation weights must be enabled. */
7628 if (!(shader
->config
.spi_ps_input_ena
& 0x7f)) {
7629 shader
->config
.spi_ps_input_ena
|= S_0286CC_LINEAR_CENTER_ENA(1);
7630 assert(G_0286CC_LINEAR_CENTER_ENA(shader
->config
.spi_ps_input_addr
));
7633 /* Samplemask fixup requires the sample ID. */
7634 if (shader
->key
.part
.ps
.prolog
.samplemask_log_ps_iter
) {
7635 shader
->config
.spi_ps_input_ena
|= S_0286CC_ANCILLARY_ENA(1);
7636 assert(G_0286CC_ANCILLARY_ENA(shader
->config
.spi_ps_input_addr
));
7639 /* The sample mask input is always enabled, because the API shader always
7640 * passes it through to the epilog. Disable it here if it's unused.
7642 if (!shader
->key
.part
.ps
.epilog
.poly_line_smoothing
&&
7643 !shader
->selector
->info
.reads_samplemask
)
7644 shader
->config
.spi_ps_input_ena
&= C_0286CC_SAMPLE_COVERAGE_ENA
;
7649 void si_multiwave_lds_size_workaround(struct si_screen
*sscreen
,
7652 /* SPI barrier management bug:
7653 * Make sure we have at least 4k of LDS in use to avoid the bug.
7654 * It applies to workgroup sizes of more than one wavefront.
7656 if (sscreen
->b
.family
== CHIP_BONAIRE
||
7657 sscreen
->b
.family
== CHIP_KABINI
||
7658 sscreen
->b
.family
== CHIP_MULLINS
)
7659 *lds_size
= MAX2(*lds_size
, 8);
7662 static void si_fix_resource_usage(struct si_screen
*sscreen
,
7663 struct si_shader
*shader
)
7665 unsigned min_sgprs
= shader
->info
.num_input_sgprs
+ 2; /* VCC */
7667 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
, min_sgprs
);
7669 if (shader
->selector
->type
== PIPE_SHADER_COMPUTE
&&
7670 si_get_max_workgroup_size(shader
) > 64) {
7671 si_multiwave_lds_size_workaround(sscreen
,
7672 &shader
->config
.lds_size
);
7676 int si_shader_create(struct si_screen
*sscreen
, LLVMTargetMachineRef tm
,
7677 struct si_shader
*shader
,
7678 struct pipe_debug_callback
*debug
)
7680 struct si_shader_selector
*sel
= shader
->selector
;
7681 struct si_shader
*mainp
= *si_get_main_shader_part(sel
, &shader
->key
);
7684 /* LS, ES, VS are compiled on demand if the main part hasn't been
7685 * compiled for that stage.
7687 * Vertex shaders are compiled on demand when a vertex fetch
7688 * workaround must be applied.
7690 if (shader
->is_monolithic
) {
7691 /* Monolithic shader (compiled as a whole, has many variants,
7692 * may take a long time to compile).
7694 r
= si_compile_tgsi_shader(sscreen
, tm
, shader
, true, debug
);
7698 /* The shader consists of several parts:
7700 * - the middle part is the user shader, it has 1 variant only
7701 * and it was compiled during the creation of the shader
7703 * - the prolog part is inserted at the beginning
7704 * - the epilog part is inserted at the end
7706 * The prolog and epilog have many (but simple) variants.
7708 * Starting with gfx9, geometry and tessellation control
7709 * shaders also contain the prolog and user shader parts of
7710 * the previous shader stage.
7716 /* Copy the compiled TGSI shader data over. */
7717 shader
->is_binary_shared
= true;
7718 shader
->binary
= mainp
->binary
;
7719 shader
->config
= mainp
->config
;
7720 shader
->info
.num_input_sgprs
= mainp
->info
.num_input_sgprs
;
7721 shader
->info
.num_input_vgprs
= mainp
->info
.num_input_vgprs
;
7722 shader
->info
.face_vgpr_index
= mainp
->info
.face_vgpr_index
;
7723 shader
->info
.ancillary_vgpr_index
= mainp
->info
.ancillary_vgpr_index
;
7724 memcpy(shader
->info
.vs_output_param_offset
,
7725 mainp
->info
.vs_output_param_offset
,
7726 sizeof(mainp
->info
.vs_output_param_offset
));
7727 shader
->info
.uses_instanceid
= mainp
->info
.uses_instanceid
;
7728 shader
->info
.nr_pos_exports
= mainp
->info
.nr_pos_exports
;
7729 shader
->info
.nr_param_exports
= mainp
->info
.nr_param_exports
;
7731 /* Select prologs and/or epilogs. */
7732 switch (sel
->type
) {
7733 case PIPE_SHADER_VERTEX
:
7734 if (!si_shader_select_vs_parts(sscreen
, tm
, shader
, debug
))
7737 case PIPE_SHADER_TESS_CTRL
:
7738 if (!si_shader_select_tcs_parts(sscreen
, tm
, shader
, debug
))
7741 case PIPE_SHADER_TESS_EVAL
:
7743 case PIPE_SHADER_GEOMETRY
:
7744 if (!si_shader_select_gs_parts(sscreen
, tm
, shader
, debug
))
7747 case PIPE_SHADER_FRAGMENT
:
7748 if (!si_shader_select_ps_parts(sscreen
, tm
, shader
, debug
))
7751 /* Make sure we have at least as many VGPRs as there
7752 * are allocated inputs.
7754 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
7755 shader
->info
.num_input_vgprs
);
7759 /* Update SGPR and VGPR counts. */
7760 if (shader
->prolog
) {
7761 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
,
7762 shader
->prolog
->config
.num_sgprs
);
7763 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
7764 shader
->prolog
->config
.num_vgprs
);
7766 if (shader
->previous_stage
) {
7767 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
,
7768 shader
->previous_stage
->config
.num_sgprs
);
7769 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
7770 shader
->previous_stage
->config
.num_vgprs
);
7771 shader
->config
.spilled_sgprs
=
7772 MAX2(shader
->config
.spilled_sgprs
,
7773 shader
->previous_stage
->config
.spilled_sgprs
);
7774 shader
->config
.spilled_vgprs
=
7775 MAX2(shader
->config
.spilled_vgprs
,
7776 shader
->previous_stage
->config
.spilled_vgprs
);
7777 shader
->config
.private_mem_vgprs
=
7778 MAX2(shader
->config
.private_mem_vgprs
,
7779 shader
->previous_stage
->config
.private_mem_vgprs
);
7780 shader
->config
.scratch_bytes_per_wave
=
7781 MAX2(shader
->config
.scratch_bytes_per_wave
,
7782 shader
->previous_stage
->config
.scratch_bytes_per_wave
);
7783 shader
->info
.uses_instanceid
|=
7784 shader
->previous_stage
->info
.uses_instanceid
;
7786 if (shader
->prolog2
) {
7787 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
,
7788 shader
->prolog2
->config
.num_sgprs
);
7789 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
7790 shader
->prolog2
->config
.num_vgprs
);
7792 if (shader
->epilog
) {
7793 shader
->config
.num_sgprs
= MAX2(shader
->config
.num_sgprs
,
7794 shader
->epilog
->config
.num_sgprs
);
7795 shader
->config
.num_vgprs
= MAX2(shader
->config
.num_vgprs
,
7796 shader
->epilog
->config
.num_vgprs
);
7800 si_fix_resource_usage(sscreen
, shader
);
7801 si_shader_dump(sscreen
, shader
, debug
, sel
->info
.processor
,
7805 r
= si_shader_binary_upload(sscreen
, shader
);
7807 fprintf(stderr
, "LLVM failed to upload shader\n");
7814 void si_shader_destroy(struct si_shader
*shader
)
7816 if (shader
->scratch_bo
)
7817 r600_resource_reference(&shader
->scratch_bo
, NULL
);
7819 r600_resource_reference(&shader
->bo
, NULL
);
7821 if (!shader
->is_binary_shared
)
7822 si_radeon_shader_binary_clean(&shader
->binary
);
7824 free(shader
->shader_log
);