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 * Tom Stellard <thomas.stellard@amd.com>
25 * Michel Dänzer <michel.daenzer@amd.com>
26 * Christian König <christian.koenig@amd.com>
29 /* How linking shader inputs and outputs between vertex, tessellation, and
30 * geometry shaders works.
32 * Inputs and outputs between shaders are stored in a buffer. This buffer
33 * lives in LDS (typical case for tessellation), but it can also live
34 * in memory (ESGS). Each input or output has a fixed location within a vertex.
35 * The highest used input or output determines the stride between vertices.
37 * Since GS and tessellation are only possible in the OpenGL core profile,
38 * only these semantics are valid for per-vertex data:
45 * CULLDIST0..1 (not implemented)
48 * For example, a shader only writing GENERIC0 has the output stride of 5.
50 * Only these semantics are valid for per-patch data:
58 * That's how independent shaders agree on input and output locations.
59 * The si_shader_io_get_unique_index function assigns the locations.
61 * For tessellation, other required information for calculating the input and
62 * output addresses like the vertex stride, the patch stride, and the offsets
63 * where per-vertex and per-patch data start, is passed to the shader via
64 * user data SGPRs. The offsets and strides are calculated at draw time and
65 * aren't available at compile time.
71 #include <llvm-c/Core.h> /* LLVMModuleRef */
72 #include <llvm-c/TargetMachine.h>
73 #include "tgsi/tgsi_scan.h"
74 #include "util/u_queue.h"
77 struct radeon_shader_binary
;
78 struct radeon_shader_reloc
;
80 #define SI_MAX_VS_OUTPUTS 40
82 /* SGPR user data indices */
84 SI_SGPR_RW_BUFFERS
, /* rings (& stream-out, VS only) */
85 SI_SGPR_RW_BUFFERS_HI
,
86 SI_SGPR_CONST_BUFFERS
,
87 SI_SGPR_CONST_BUFFERS_HI
,
88 SI_SGPR_SAMPLERS
, /* images & sampler states interleaved */
92 SI_SGPR_SHADER_BUFFERS
,
93 SI_SGPR_SHADER_BUFFERS_HI
,
94 SI_NUM_RESOURCE_SGPRS
,
97 SI_SGPR_VERTEX_BUFFERS
= SI_NUM_RESOURCE_SGPRS
,
98 SI_SGPR_VERTEX_BUFFERS_HI
,
100 SI_SGPR_START_INSTANCE
,
105 SI_SGPR_VS_STATE_BITS
= SI_ES_NUM_USER_SGPR
,
109 SI_SGPR_LS_OUT_LAYOUT
= SI_ES_NUM_USER_SGPR
,
112 /* both TCS and TES */
113 SI_SGPR_TCS_OFFCHIP_LAYOUT
= SI_NUM_RESOURCE_SGPRS
,
114 SI_TES_NUM_USER_SGPR
,
117 SI_SGPR_TCS_OUT_OFFSETS
= SI_TES_NUM_USER_SGPR
,
118 SI_SGPR_TCS_OUT_LAYOUT
,
119 SI_SGPR_TCS_IN_LAYOUT
,
120 SI_TCS_NUM_USER_SGPR
,
123 SI_GS_NUM_USER_SGPR
= SI_NUM_RESOURCE_SGPRS
,
124 SI_GSCOPY_NUM_USER_SGPR
= SI_SGPR_RW_BUFFERS_HI
+ 1,
127 SI_SGPR_ALPHA_REF
= SI_NUM_RESOURCE_SGPRS
,
131 SI_SGPR_GRID_SIZE
= SI_NUM_RESOURCE_SGPRS
,
132 SI_SGPR_BLOCK_SIZE
= SI_SGPR_GRID_SIZE
+ 3,
133 SI_CS_NUM_USER_SGPR
= SI_SGPR_BLOCK_SIZE
+ 3
136 /* LLVM function parameter indices */
139 SI_PARAM_CONST_BUFFERS
,
142 SI_PARAM_SHADER_BUFFERS
,
143 SI_NUM_RESOURCE_PARAMS
,
145 /* VS only parameters */
146 SI_PARAM_VERTEX_BUFFERS
= SI_NUM_RESOURCE_PARAMS
,
147 SI_PARAM_BASE_VERTEX
,
148 SI_PARAM_START_INSTANCE
,
150 /* [0] = clamp vertex color, VS as VS only */
151 SI_PARAM_VS_STATE_BITS
,
152 /* same value as TCS_IN_LAYOUT, VS as LS only */
153 SI_PARAM_LS_OUT_LAYOUT
= SI_PARAM_DRAWID
+ 1,
154 /* the other VS parameters are assigned dynamically */
156 /* Layout of TCS outputs in the offchip buffer
157 * [0:8] = the number of patches per threadgroup.
158 * [9:15] = the number of output vertices per patch.
159 * [16:31] = the offset of per patch attributes in the buffer in bytes.
161 SI_PARAM_TCS_OFFCHIP_LAYOUT
= SI_NUM_RESOURCE_PARAMS
, /* for TCS & TES */
163 /* TCS only parameters. */
165 /* Offsets where TCS outputs and TCS patch outputs live in LDS:
166 * [0:15] = TCS output patch0 offset / 16, max = NUM_PATCHES * 32 * 32
167 * [16:31] = TCS output patch0 offset for per-patch / 16, max = NUM_PATCHES*32*32* + 32*32
169 SI_PARAM_TCS_OUT_OFFSETS
,
171 /* Layout of TCS outputs / TES inputs:
172 * [0:12] = stride between output patches in dwords, num_outputs * num_vertices * 4, max = 32*32*4
173 * [13:20] = stride between output vertices in dwords = num_inputs * 4, max = 32*4
174 * [26:31] = gl_PatchVerticesIn, max = 32
176 SI_PARAM_TCS_OUT_LAYOUT
,
178 /* Layout of LS outputs / TCS inputs
179 * [0:12] = stride between patches in dwords = num_inputs * num_vertices * 4, max = 32*32*4
180 * [13:20] = stride between vertices in dwords = num_inputs * 4, max = 32*4
182 SI_PARAM_TCS_IN_LAYOUT
,
185 SI_PARAM_TESS_FACTOR_OFFSET
,
189 /* GS only parameters */
190 SI_PARAM_GS2VS_OFFSET
= SI_NUM_RESOURCE_PARAMS
,
192 SI_PARAM_VTX0_OFFSET
,
193 SI_PARAM_VTX1_OFFSET
,
194 SI_PARAM_PRIMITIVE_ID
,
195 SI_PARAM_VTX2_OFFSET
,
196 SI_PARAM_VTX3_OFFSET
,
197 SI_PARAM_VTX4_OFFSET
,
198 SI_PARAM_VTX5_OFFSET
,
199 SI_PARAM_GS_INSTANCE_ID
,
201 /* PS only parameters */
202 SI_PARAM_ALPHA_REF
= SI_NUM_RESOURCE_PARAMS
,
204 SI_PARAM_PERSP_SAMPLE
,
205 SI_PARAM_PERSP_CENTER
,
206 SI_PARAM_PERSP_CENTROID
,
207 SI_PARAM_PERSP_PULL_MODEL
,
208 SI_PARAM_LINEAR_SAMPLE
,
209 SI_PARAM_LINEAR_CENTER
,
210 SI_PARAM_LINEAR_CENTROID
,
211 SI_PARAM_LINE_STIPPLE_TEX
,
212 SI_PARAM_POS_X_FLOAT
,
213 SI_PARAM_POS_Y_FLOAT
,
214 SI_PARAM_POS_Z_FLOAT
,
215 SI_PARAM_POS_W_FLOAT
,
218 SI_PARAM_SAMPLE_COVERAGE
,
219 SI_PARAM_POS_FIXED_PT
,
221 /* CS only parameters */
222 SI_PARAM_GRID_SIZE
= SI_NUM_RESOURCE_PARAMS
,
227 SI_NUM_PARAMS
= SI_PARAM_POS_FIXED_PT
+ 9, /* +8 for COLOR[0..1] */
230 /* SI-specific system values. */
232 TGSI_SEMANTIC_DEFAULT_TESSOUTER_SI
= TGSI_SEMANTIC_COUNT
,
233 TGSI_SEMANTIC_DEFAULT_TESSINNER_SI
,
238 /* A shader selector is a gallium CSO and contains shader variants and
239 * binaries for one TGSI program. This can be shared by multiple contexts.
241 struct si_shader_selector
{
242 struct si_screen
*screen
;
243 struct util_queue_fence ready
;
245 /* Should only be used by si_init_shader_selector_async
246 * if thread_index == -1 (non-threaded). */
247 LLVMTargetMachineRef tm
;
248 struct pipe_debug_callback debug
;
249 bool is_debug_context
;
252 struct si_shader
*first_variant
; /* immutable after the first variant */
253 struct si_shader
*last_variant
; /* mutable */
255 /* The compiled TGSI shader expecting a prolog and/or epilog (not
256 * uploaded to a buffer).
258 struct si_shader
*main_shader_part
;
260 struct tgsi_token
*tokens
;
261 struct pipe_stream_output_info so
;
262 struct tgsi_shader_info info
;
264 /* PIPE_SHADER_[VERTEX|FRAGMENT|...] */
268 unsigned esgs_itemsize
;
269 unsigned gs_input_verts_per_prim
;
270 unsigned gs_output_prim
;
271 unsigned gs_max_out_vertices
;
272 unsigned gs_num_invocations
;
273 unsigned max_gs_stream
; /* count - 1 */
274 unsigned gsvs_vertex_size
;
275 unsigned max_gsvs_emit_size
;
278 unsigned color_attr_index
[2];
279 unsigned db_shader_control
;
280 /* Set 0xf or 0x0 (4 bits) per each written output.
281 * ANDed with spi_shader_col_format.
283 unsigned colors_written_4bit
;
288 /* masks of "get_unique_index" bits */
289 uint64_t outputs_written
;
290 uint32_t patch_outputs_written
;
293 /* Valid shader configurations:
295 * API shaders VS | TCS | TES | GS |pass| PS
296 * are compiled as: | | | |thru|
298 * Only VS & PS: VS | -- | -- | -- | -- | PS
299 * With GS: ES | -- | -- | GS | VS | PS
300 * With Tessel.: LS | HS | VS | -- | -- | PS
301 * With both: LS | HS | ES | GS | VS | PS
304 /* Common VS bits between the shader key and the prolog key. */
305 struct si_vs_prolog_bits
{
306 unsigned instance_divisors
[SI_NUM_VERTEX_BUFFERS
];
309 /* Common VS bits between the shader key and the epilog key. */
310 struct si_vs_epilog_bits
{
311 unsigned export_prim_id
:1; /* when PS needs it and GS is disabled */
313 * - skip clipdist, culldist (including clipvertex code) exports based
314 * on which clip_plane_enable bits are set
315 * - skip layer, viewport, clipdist, and culldist parameter exports
316 * if PS doesn't read them
320 /* Common TCS bits between the shader key and the epilog key. */
321 struct si_tcs_epilog_bits
{
322 unsigned prim_mode
:3;
323 uint64_t inputs_to_copy
;
326 /* Common PS bits between the shader key and the prolog key. */
327 struct si_ps_prolog_bits
{
328 unsigned color_two_side
:1;
329 unsigned flatshade_colors
:1;
330 unsigned poly_stipple
:1;
331 unsigned force_persp_sample_interp
:1;
332 unsigned force_linear_sample_interp
:1;
333 unsigned force_persp_center_interp
:1;
334 unsigned force_linear_center_interp
:1;
335 unsigned bc_optimize_for_persp
:1;
336 unsigned bc_optimize_for_linear
:1;
339 /* Common PS bits between the shader key and the epilog key. */
340 struct si_ps_epilog_bits
{
341 unsigned spi_shader_col_format
;
342 unsigned color_is_int8
:8;
343 unsigned last_cbuf
:3;
344 unsigned alpha_func
:3;
345 unsigned alpha_to_one
:1;
346 unsigned poly_line_smoothing
:1;
347 unsigned clamp_color
:1;
350 union si_shader_part_key
{
352 struct si_vs_prolog_bits states
;
353 unsigned num_input_sgprs
:5;
354 unsigned last_input
:4;
357 struct si_vs_epilog_bits states
;
358 unsigned prim_id_param_offset
:5;
361 struct si_tcs_epilog_bits states
;
364 struct si_ps_prolog_bits states
;
365 unsigned num_input_sgprs
:5;
366 unsigned num_input_vgprs
:5;
367 /* Color interpolation and two-side color selection. */
368 unsigned colors_read
:8; /* color input components read */
369 unsigned num_interp_inputs
:5; /* BCOLOR is at this location */
370 unsigned face_vgpr_index
:5;
372 char color_attr_index
[2];
373 char color_interp_vgpr_index
[2]; /* -1 == constant */
376 struct si_ps_epilog_bits states
;
377 unsigned colors_written
:8;
379 unsigned writes_stencil
:1;
380 unsigned writes_samplemask
:1;
384 union si_shader_key
{
386 struct si_ps_prolog_bits prolog
;
387 struct si_ps_epilog_bits epilog
;
390 struct si_vs_prolog_bits prolog
;
391 struct si_vs_epilog_bits epilog
;
392 unsigned as_es
:1; /* export shader */
393 unsigned as_ls
:1; /* local shader */
396 struct si_tcs_epilog_bits epilog
;
397 } tcs
; /* tessellation control shader */
399 struct si_vs_epilog_bits epilog
; /* same as VS */
400 unsigned as_es
:1; /* export shader */
401 } tes
; /* tessellation evaluation shader */
404 struct si_shader_config
{
407 unsigned spilled_sgprs
;
408 unsigned spilled_vgprs
;
410 unsigned spi_ps_input_ena
;
411 unsigned spi_ps_input_addr
;
413 unsigned scratch_bytes_per_wave
;
419 /* SPI_PS_INPUT_CNTL_i.OFFSET[0:4] */
420 EXP_PARAM_OFFSET_0
= 0,
421 EXP_PARAM_OFFSET_31
= 31,
422 /* SPI_PS_INPUT_CNTL_i.DEFAULT_VAL[0:1] */
423 EXP_PARAM_DEFAULT_VAL_0000
= 64,
424 EXP_PARAM_DEFAULT_VAL_0001
,
425 EXP_PARAM_DEFAULT_VAL_1110
,
426 EXP_PARAM_DEFAULT_VAL_1111
,
429 /* GCN-specific shader info. */
430 struct si_shader_info
{
431 ubyte vs_output_param_offset
[SI_MAX_VS_OUTPUTS
];
432 ubyte num_input_sgprs
;
433 ubyte num_input_vgprs
;
434 char face_vgpr_index
;
435 bool uses_instanceid
;
436 ubyte nr_pos_exports
;
437 ubyte nr_param_exports
;
441 struct si_shader_selector
*selector
;
442 struct si_shader
*next_variant
;
444 struct si_shader_part
*prolog
;
445 struct si_shader_part
*epilog
;
447 struct si_shader
*gs_copy_shader
;
448 struct si_pm4_state
*pm4
;
449 struct r600_resource
*bo
;
450 struct r600_resource
*scratch_bo
;
451 union si_shader_key key
;
452 bool is_binary_shared
;
454 /* The following data is all that's needed for binary shaders. */
455 struct radeon_shader_binary binary
;
456 struct si_shader_config config
;
457 struct si_shader_info info
;
459 /* Shader key + LLVM IR + disassembly + statistics.
460 * Generated for debug contexts only.
463 size_t shader_log_size
;
466 struct si_shader_part
{
467 struct si_shader_part
*next
;
468 union si_shader_part_key key
;
469 struct radeon_shader_binary binary
;
470 struct si_shader_config config
;
474 int si_compile_tgsi_shader(struct si_screen
*sscreen
,
475 LLVMTargetMachineRef tm
,
476 struct si_shader
*shader
,
478 struct pipe_debug_callback
*debug
);
479 int si_shader_create(struct si_screen
*sscreen
, LLVMTargetMachineRef tm
,
480 struct si_shader
*shader
,
481 struct pipe_debug_callback
*debug
);
482 int si_compile_llvm(struct si_screen
*sscreen
,
483 struct radeon_shader_binary
*binary
,
484 struct si_shader_config
*conf
,
485 LLVMTargetMachineRef tm
,
487 struct pipe_debug_callback
*debug
,
490 void si_shader_destroy(struct si_shader
*shader
);
491 unsigned si_shader_io_get_unique_index(unsigned semantic_name
, unsigned index
);
492 int si_shader_binary_upload(struct si_screen
*sscreen
, struct si_shader
*shader
);
493 void si_shader_dump(struct si_screen
*sscreen
, struct si_shader
*shader
,
494 struct pipe_debug_callback
*debug
, unsigned processor
,
496 void si_shader_apply_scratch_relocs(struct si_context
*sctx
,
497 struct si_shader
*shader
,
498 struct si_shader_config
*config
,
499 uint64_t scratch_va
);
500 void si_shader_binary_read_config(struct radeon_shader_binary
*binary
,
501 struct si_shader_config
*conf
,
502 unsigned symbol_offset
);
503 unsigned si_get_spi_shader_z_format(bool writes_z
, bool writes_stencil
,
504 bool writes_samplemask
);