2 * Copyright 2018 Collabora Ltd.
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 "nir_to_spirv.h"
25 #include "spirv_builder.h"
28 #include "pipe/p_state.h"
29 #include "util/u_memory.h"
30 #include "util/hash_table.h"
33 struct spirv_builder builder
;
37 gl_shader_stage stage
;
41 SpvId samplers
[PIPE_MAX_SAMPLERS
];
43 SpvId entry_ifaces
[PIPE_MAX_SHADER_INPUTS
* 4 + PIPE_MAX_SHADER_OUTPUTS
* 4];
44 size_t num_entry_ifaces
;
52 struct hash_table
*vars
; /* nir_variable -> SpvId */
54 const SpvId
*block_ids
;
57 SpvId loop_break
, loop_cont
;
63 get_fvec_constant(struct ntv_context
*ctx
, unsigned bit_size
,
64 unsigned num_components
, float value
);
67 get_uvec_constant(struct ntv_context
*ctx
, unsigned bit_size
,
68 unsigned num_components
, uint32_t value
);
71 get_ivec_constant(struct ntv_context
*ctx
, unsigned bit_size
,
72 unsigned num_components
, int32_t value
);
75 emit_unop(struct ntv_context
*ctx
, SpvOp op
, SpvId type
, SpvId src
);
78 emit_binop(struct ntv_context
*ctx
, SpvOp op
, SpvId type
,
79 SpvId src0
, SpvId src1
);
82 emit_triop(struct ntv_context
*ctx
, SpvOp op
, SpvId type
,
83 SpvId src0
, SpvId src1
, SpvId src2
);
86 get_bvec_type(struct ntv_context
*ctx
, int num_components
)
88 SpvId bool_type
= spirv_builder_type_bool(&ctx
->builder
);
89 if (num_components
> 1)
90 return spirv_builder_type_vector(&ctx
->builder
, bool_type
,
93 assert(num_components
== 1);
98 block_label(struct ntv_context
*ctx
, nir_block
*block
)
100 assert(block
->index
< ctx
->num_blocks
);
101 return ctx
->block_ids
[block
->index
];
105 emit_float_const(struct ntv_context
*ctx
, int bit_size
, float value
)
107 assert(bit_size
== 32);
108 return spirv_builder_const_float(&ctx
->builder
, bit_size
, value
);
112 emit_uint_const(struct ntv_context
*ctx
, int bit_size
, uint32_t value
)
114 assert(bit_size
== 32);
115 return spirv_builder_const_uint(&ctx
->builder
, bit_size
, value
);
119 emit_int_const(struct ntv_context
*ctx
, int bit_size
, int32_t value
)
121 assert(bit_size
== 32);
122 return spirv_builder_const_int(&ctx
->builder
, bit_size
, value
);
126 get_fvec_type(struct ntv_context
*ctx
, unsigned bit_size
, unsigned num_components
)
128 assert(bit_size
== 32); // only 32-bit floats supported so far
130 SpvId float_type
= spirv_builder_type_float(&ctx
->builder
, bit_size
);
131 if (num_components
> 1)
132 return spirv_builder_type_vector(&ctx
->builder
, float_type
,
135 assert(num_components
== 1);
140 get_ivec_type(struct ntv_context
*ctx
, unsigned bit_size
, unsigned num_components
)
142 assert(bit_size
== 1 || bit_size
== 32); // only 32-bit ints supported so far
144 SpvId int_type
= spirv_builder_type_int(&ctx
->builder
, MAX2(bit_size
, 32));
145 if (num_components
> 1)
146 return spirv_builder_type_vector(&ctx
->builder
, int_type
,
149 assert(num_components
== 1);
154 get_uvec_type(struct ntv_context
*ctx
, unsigned bit_size
, unsigned num_components
)
156 assert(bit_size
== 1 || bit_size
== 32); // only 32-bit uints supported so far
158 SpvId uint_type
= spirv_builder_type_uint(&ctx
->builder
, MAX2(bit_size
, 32));
159 if (num_components
> 1)
160 return spirv_builder_type_vector(&ctx
->builder
, uint_type
,
163 assert(num_components
== 1);
168 get_dest_uvec_type(struct ntv_context
*ctx
, nir_dest
*dest
)
170 return get_uvec_type(ctx
, nir_dest_bit_size(*dest
),
171 nir_dest_num_components(*dest
));
175 get_glsl_basetype(struct ntv_context
*ctx
, enum glsl_base_type type
)
179 return spirv_builder_type_bool(&ctx
->builder
);
181 case GLSL_TYPE_FLOAT
:
182 return spirv_builder_type_float(&ctx
->builder
, 32);
185 return spirv_builder_type_int(&ctx
->builder
, 32);
188 return spirv_builder_type_uint(&ctx
->builder
, 32);
189 /* TODO: handle more types */
192 unreachable("unknown GLSL type");
197 get_glsl_type(struct ntv_context
*ctx
, const struct glsl_type
*type
)
200 if (glsl_type_is_scalar(type
))
201 return get_glsl_basetype(ctx
, glsl_get_base_type(type
));
203 if (glsl_type_is_vector(type
))
204 return spirv_builder_type_vector(&ctx
->builder
,
205 get_glsl_basetype(ctx
, glsl_get_base_type(type
)),
206 glsl_get_vector_elements(type
));
208 if (glsl_type_is_array(type
)) {
209 SpvId ret
= spirv_builder_type_array(&ctx
->builder
,
210 get_glsl_type(ctx
, glsl_get_array_element(type
)),
211 emit_uint_const(ctx
, 32, glsl_get_length(type
)));
212 uint32_t stride
= glsl_get_explicit_stride(type
);
214 spirv_builder_emit_array_stride(&ctx
->builder
, ret
, stride
);
219 unreachable("we shouldn't get here, I think...");
223 emit_input(struct ntv_context
*ctx
, struct nir_variable
*var
)
225 SpvId var_type
= get_glsl_type(ctx
, var
->type
);
226 SpvId pointer_type
= spirv_builder_type_pointer(&ctx
->builder
,
227 SpvStorageClassInput
,
229 SpvId var_id
= spirv_builder_emit_var(&ctx
->builder
, pointer_type
,
230 SpvStorageClassInput
);
233 spirv_builder_emit_name(&ctx
->builder
, var_id
, var
->name
);
235 if (ctx
->stage
== MESA_SHADER_FRAGMENT
) {
236 if (var
->data
.location
>= VARYING_SLOT_VAR0
)
237 spirv_builder_emit_location(&ctx
->builder
, var_id
,
241 else if ((var
->data
.location
>= VARYING_SLOT_COL0
&&
242 var
->data
.location
<= VARYING_SLOT_TEX7
) ||
243 var
->data
.location
== VARYING_SLOT_BFC0
||
244 var
->data
.location
== VARYING_SLOT_BFC1
) {
245 spirv_builder_emit_location(&ctx
->builder
, var_id
,
248 switch (var
->data
.location
) {
249 case VARYING_SLOT_POS
:
250 spirv_builder_emit_builtin(&ctx
->builder
, var_id
, SpvBuiltInFragCoord
);
253 case VARYING_SLOT_PNTC
:
254 spirv_builder_emit_builtin(&ctx
->builder
, var_id
, SpvBuiltInPointCoord
);
258 debug_printf("unknown varying slot: %s\n", gl_varying_slot_name(var
->data
.location
));
259 unreachable("unexpected varying slot");
263 spirv_builder_emit_location(&ctx
->builder
, var_id
,
264 var
->data
.driver_location
);
267 if (var
->data
.location_frac
)
268 spirv_builder_emit_component(&ctx
->builder
, var_id
,
269 var
->data
.location_frac
);
271 if (var
->data
.interpolation
== INTERP_MODE_FLAT
)
272 spirv_builder_emit_decoration(&ctx
->builder
, var_id
, SpvDecorationFlat
);
274 _mesa_hash_table_insert(ctx
->vars
, var
, (void *)(intptr_t)var_id
);
276 assert(ctx
->num_entry_ifaces
< ARRAY_SIZE(ctx
->entry_ifaces
));
277 ctx
->entry_ifaces
[ctx
->num_entry_ifaces
++] = var_id
;
281 emit_output(struct ntv_context
*ctx
, struct nir_variable
*var
)
283 SpvId var_type
= get_glsl_type(ctx
, var
->type
);
284 SpvId pointer_type
= spirv_builder_type_pointer(&ctx
->builder
,
285 SpvStorageClassOutput
,
287 SpvId var_id
= spirv_builder_emit_var(&ctx
->builder
, pointer_type
,
288 SpvStorageClassOutput
);
290 spirv_builder_emit_name(&ctx
->builder
, var_id
, var
->name
);
293 if (ctx
->stage
== MESA_SHADER_VERTEX
) {
294 if (var
->data
.location
>= VARYING_SLOT_VAR0
)
295 spirv_builder_emit_location(&ctx
->builder
, var_id
,
299 else if ((var
->data
.location
>= VARYING_SLOT_COL0
&&
300 var
->data
.location
<= VARYING_SLOT_TEX7
) ||
301 var
->data
.location
== VARYING_SLOT_BFC0
||
302 var
->data
.location
== VARYING_SLOT_BFC1
) {
303 spirv_builder_emit_location(&ctx
->builder
, var_id
,
306 switch (var
->data
.location
) {
307 case VARYING_SLOT_POS
:
308 spirv_builder_emit_builtin(&ctx
->builder
, var_id
, SpvBuiltInPosition
);
311 case VARYING_SLOT_PSIZ
:
312 spirv_builder_emit_builtin(&ctx
->builder
, var_id
, SpvBuiltInPointSize
);
315 case VARYING_SLOT_CLIP_DIST0
:
316 assert(glsl_type_is_array(var
->type
));
317 spirv_builder_emit_builtin(&ctx
->builder
, var_id
, SpvBuiltInClipDistance
);
321 debug_printf("unknown varying slot: %s\n", gl_varying_slot_name(var
->data
.location
));
322 unreachable("unexpected varying slot");
325 } else if (ctx
->stage
== MESA_SHADER_FRAGMENT
) {
326 if (var
->data
.location
>= FRAG_RESULT_DATA0
)
327 spirv_builder_emit_location(&ctx
->builder
, var_id
,
328 var
->data
.location
- FRAG_RESULT_DATA0
);
330 switch (var
->data
.location
) {
331 case FRAG_RESULT_COLOR
:
332 spirv_builder_emit_location(&ctx
->builder
, var_id
, 0);
335 case FRAG_RESULT_DEPTH
:
336 spirv_builder_emit_builtin(&ctx
->builder
, var_id
, SpvBuiltInFragDepth
);
340 spirv_builder_emit_location(&ctx
->builder
, var_id
,
341 var
->data
.driver_location
);
346 if (var
->data
.location_frac
)
347 spirv_builder_emit_component(&ctx
->builder
, var_id
,
348 var
->data
.location_frac
);
350 _mesa_hash_table_insert(ctx
->vars
, var
, (void *)(intptr_t)var_id
);
352 assert(ctx
->num_entry_ifaces
< ARRAY_SIZE(ctx
->entry_ifaces
));
353 ctx
->entry_ifaces
[ctx
->num_entry_ifaces
++] = var_id
;
357 type_to_dim(enum glsl_sampler_dim gdim
, bool *is_ms
)
361 case GLSL_SAMPLER_DIM_1D
:
363 case GLSL_SAMPLER_DIM_2D
:
365 case GLSL_SAMPLER_DIM_3D
:
367 case GLSL_SAMPLER_DIM_CUBE
:
369 case GLSL_SAMPLER_DIM_RECT
:
371 case GLSL_SAMPLER_DIM_BUF
:
373 case GLSL_SAMPLER_DIM_EXTERNAL
:
374 return SpvDim2D
; /* seems dodgy... */
375 case GLSL_SAMPLER_DIM_MS
:
379 fprintf(stderr
, "unknown sampler type %d\n", gdim
);
386 emit_sampler(struct ntv_context
*ctx
, struct nir_variable
*var
)
389 SpvDim dimension
= type_to_dim(glsl_get_sampler_dim(var
->type
), &is_ms
);
390 SpvId float_type
= spirv_builder_type_float(&ctx
->builder
, 32);
391 SpvId image_type
= spirv_builder_type_image(&ctx
->builder
, float_type
,
392 dimension
, false, glsl_sampler_type_is_array(var
->type
), is_ms
, 1,
393 SpvImageFormatUnknown
);
395 SpvId sampled_type
= spirv_builder_type_sampled_image(&ctx
->builder
,
397 SpvId pointer_type
= spirv_builder_type_pointer(&ctx
->builder
,
398 SpvStorageClassUniformConstant
,
400 SpvId var_id
= spirv_builder_emit_var(&ctx
->builder
, pointer_type
,
401 SpvStorageClassUniformConstant
);
404 spirv_builder_emit_name(&ctx
->builder
, var_id
, var
->name
);
406 assert(ctx
->num_samplers
< ARRAY_SIZE(ctx
->samplers
));
407 ctx
->samplers
[ctx
->num_samplers
++] = var_id
;
409 spirv_builder_emit_descriptor_set(&ctx
->builder
, var_id
,
410 var
->data
.descriptor_set
);
411 spirv_builder_emit_binding(&ctx
->builder
, var_id
, var
->data
.binding
);
415 emit_ubo(struct ntv_context
*ctx
, struct nir_variable
*var
)
417 uint32_t size
= glsl_count_attribute_slots(var
->type
, false);
418 SpvId vec4_type
= get_uvec_type(ctx
, 32, 4);
419 SpvId array_length
= emit_uint_const(ctx
, 32, size
);
420 SpvId array_type
= spirv_builder_type_array(&ctx
->builder
, vec4_type
,
422 spirv_builder_emit_array_stride(&ctx
->builder
, array_type
, 16);
424 // wrap UBO-array in a struct
425 SpvId struct_type
= spirv_builder_type_struct(&ctx
->builder
, &array_type
, 1);
427 char struct_name
[100];
428 snprintf(struct_name
, sizeof(struct_name
), "struct_%s", var
->name
);
429 spirv_builder_emit_name(&ctx
->builder
, struct_type
, struct_name
);
432 spirv_builder_emit_decoration(&ctx
->builder
, struct_type
,
434 spirv_builder_emit_member_offset(&ctx
->builder
, struct_type
, 0, 0);
437 SpvId pointer_type
= spirv_builder_type_pointer(&ctx
->builder
,
438 SpvStorageClassUniform
,
441 SpvId var_id
= spirv_builder_emit_var(&ctx
->builder
, pointer_type
,
442 SpvStorageClassUniform
);
444 spirv_builder_emit_name(&ctx
->builder
, var_id
, var
->name
);
446 assert(ctx
->num_ubos
< ARRAY_SIZE(ctx
->ubos
));
447 ctx
->ubos
[ctx
->num_ubos
++] = var_id
;
449 spirv_builder_emit_descriptor_set(&ctx
->builder
, var_id
,
450 var
->data
.descriptor_set
);
451 spirv_builder_emit_binding(&ctx
->builder
, var_id
, var
->data
.binding
);
455 emit_uniform(struct ntv_context
*ctx
, struct nir_variable
*var
)
457 if (var
->data
.mode
== nir_var_mem_ubo
)
460 assert(var
->data
.mode
== nir_var_uniform
);
461 if (glsl_type_is_sampler(var
->type
))
462 emit_sampler(ctx
, var
);
467 get_src_uint_ssa(struct ntv_context
*ctx
, const nir_ssa_def
*ssa
)
469 assert(ssa
->index
< ctx
->num_defs
);
470 assert(ctx
->defs
[ssa
->index
] != 0);
471 return ctx
->defs
[ssa
->index
];
475 get_var_from_reg(struct ntv_context
*ctx
, nir_register
*reg
)
477 assert(reg
->index
< ctx
->num_regs
);
478 assert(ctx
->regs
[reg
->index
] != 0);
479 return ctx
->regs
[reg
->index
];
483 get_src_uint_reg(struct ntv_context
*ctx
, const nir_reg_src
*reg
)
486 assert(!reg
->indirect
);
487 assert(!reg
->base_offset
);
489 SpvId var
= get_var_from_reg(ctx
, reg
->reg
);
490 SpvId type
= get_uvec_type(ctx
, reg
->reg
->bit_size
, reg
->reg
->num_components
);
491 return spirv_builder_emit_load(&ctx
->builder
, type
, var
);
495 get_src_uint(struct ntv_context
*ctx
, nir_src
*src
)
498 return get_src_uint_ssa(ctx
, src
->ssa
);
500 return get_src_uint_reg(ctx
, &src
->reg
);
504 get_alu_src_uint(struct ntv_context
*ctx
, nir_alu_instr
*alu
, unsigned src
)
506 assert(!alu
->src
[src
].negate
);
507 assert(!alu
->src
[src
].abs
);
509 SpvId def
= get_src_uint(ctx
, &alu
->src
[src
].src
);
511 unsigned used_channels
= 0;
512 bool need_swizzle
= false;
513 for (unsigned i
= 0; i
< NIR_MAX_VEC_COMPONENTS
; i
++) {
514 if (!nir_alu_instr_channel_used(alu
, src
, i
))
519 if (alu
->src
[src
].swizzle
[i
] != i
)
522 assert(used_channels
!= 0);
524 unsigned live_channels
= nir_src_num_components(alu
->src
[src
].src
);
525 if (used_channels
!= live_channels
)
531 int bit_size
= nir_src_bit_size(alu
->src
[src
].src
);
532 assert(bit_size
== 1 || bit_size
== 32);
534 SpvId uint_type
= spirv_builder_type_uint(&ctx
->builder
, MAX2(bit_size
, 32));
535 if (used_channels
== 1) {
536 uint32_t indices
[] = { alu
->src
[src
].swizzle
[0] };
537 return spirv_builder_emit_composite_extract(&ctx
->builder
, uint_type
,
539 ARRAY_SIZE(indices
));
540 } else if (live_channels
== 1) {
541 SpvId uvec_type
= spirv_builder_type_vector(&ctx
->builder
, uint_type
,
544 SpvId constituents
[NIR_MAX_VEC_COMPONENTS
];
545 for (unsigned i
= 0; i
< used_channels
; ++i
)
546 constituents
[i
] = def
;
548 return spirv_builder_emit_composite_construct(&ctx
->builder
, uvec_type
,
552 SpvId uvec_type
= spirv_builder_type_vector(&ctx
->builder
, uint_type
,
555 uint32_t components
[NIR_MAX_VEC_COMPONENTS
];
556 size_t num_components
= 0;
557 for (unsigned i
= 0; i
< NIR_MAX_VEC_COMPONENTS
; i
++) {
558 if (!nir_alu_instr_channel_used(alu
, src
, i
))
561 components
[num_components
++] = alu
->src
[src
].swizzle
[i
];
564 return spirv_builder_emit_vector_shuffle(&ctx
->builder
, uvec_type
,
565 def
, def
, components
, num_components
);
570 store_ssa_def_uint(struct ntv_context
*ctx
, nir_ssa_def
*ssa
, SpvId result
)
573 assert(ssa
->index
< ctx
->num_defs
);
574 ctx
->defs
[ssa
->index
] = result
;
578 emit_select(struct ntv_context
*ctx
, SpvId type
, SpvId cond
,
579 SpvId if_true
, SpvId if_false
)
581 return emit_triop(ctx
, SpvOpSelect
, type
, cond
, if_true
, if_false
);
585 bvec_to_uvec(struct ntv_context
*ctx
, SpvId value
, unsigned num_components
)
587 SpvId otype
= get_uvec_type(ctx
, 32, num_components
);
588 SpvId zero
= get_uvec_constant(ctx
, 32, num_components
, 0);
589 SpvId one
= get_uvec_constant(ctx
, 32, num_components
, UINT32_MAX
);
590 return emit_select(ctx
, otype
, value
, one
, zero
);
594 uvec_to_bvec(struct ntv_context
*ctx
, SpvId value
, unsigned num_components
)
596 SpvId type
= get_bvec_type(ctx
, num_components
);
597 SpvId zero
= get_uvec_constant(ctx
, 32, num_components
, 0);
598 return emit_binop(ctx
, SpvOpINotEqual
, type
, value
, zero
);
602 emit_bitcast(struct ntv_context
*ctx
, SpvId type
, SpvId value
)
604 return emit_unop(ctx
, SpvOpBitcast
, type
, value
);
608 bitcast_to_uvec(struct ntv_context
*ctx
, SpvId value
, unsigned bit_size
,
609 unsigned num_components
)
611 SpvId type
= get_uvec_type(ctx
, bit_size
, num_components
);
612 return emit_bitcast(ctx
, type
, value
);
616 bitcast_to_ivec(struct ntv_context
*ctx
, SpvId value
, unsigned bit_size
,
617 unsigned num_components
)
619 SpvId type
= get_ivec_type(ctx
, bit_size
, num_components
);
620 return emit_bitcast(ctx
, type
, value
);
624 bitcast_to_fvec(struct ntv_context
*ctx
, SpvId value
, unsigned bit_size
,
625 unsigned num_components
)
627 SpvId type
= get_fvec_type(ctx
, bit_size
, num_components
);
628 return emit_bitcast(ctx
, type
, value
);
632 store_reg_def(struct ntv_context
*ctx
, nir_reg_dest
*reg
, SpvId result
)
634 SpvId var
= get_var_from_reg(ctx
, reg
->reg
);
636 spirv_builder_emit_store(&ctx
->builder
, var
, result
);
640 store_dest_uint(struct ntv_context
*ctx
, nir_dest
*dest
, SpvId result
)
643 store_ssa_def_uint(ctx
, &dest
->ssa
, result
);
645 store_reg_def(ctx
, &dest
->reg
, result
);
649 store_dest(struct ntv_context
*ctx
, nir_dest
*dest
, SpvId result
, nir_alu_type type
)
651 unsigned num_components
= nir_dest_num_components(*dest
);
652 unsigned bit_size
= nir_dest_bit_size(*dest
);
654 switch (nir_alu_type_get_base_type(type
)) {
656 assert(bit_size
== 1);
657 result
= bvec_to_uvec(ctx
, result
, num_components
);
661 break; /* nothing to do! */
665 result
= bitcast_to_uvec(ctx
, result
, bit_size
, num_components
);
669 unreachable("unsupported nir_alu_type");
672 store_dest_uint(ctx
, dest
, result
);
676 emit_unop(struct ntv_context
*ctx
, SpvOp op
, SpvId type
, SpvId src
)
678 return spirv_builder_emit_unop(&ctx
->builder
, op
, type
, src
);
682 emit_binop(struct ntv_context
*ctx
, SpvOp op
, SpvId type
,
683 SpvId src0
, SpvId src1
)
685 return spirv_builder_emit_binop(&ctx
->builder
, op
, type
, src0
, src1
);
689 emit_triop(struct ntv_context
*ctx
, SpvOp op
, SpvId type
,
690 SpvId src0
, SpvId src1
, SpvId src2
)
692 return spirv_builder_emit_triop(&ctx
->builder
, op
, type
, src0
, src1
, src2
);
696 emit_builtin_unop(struct ntv_context
*ctx
, enum GLSLstd450 op
, SpvId type
,
699 SpvId args
[] = { src
};
700 return spirv_builder_emit_ext_inst(&ctx
->builder
, type
, ctx
->GLSL_std_450
,
701 op
, args
, ARRAY_SIZE(args
));
705 emit_builtin_binop(struct ntv_context
*ctx
, enum GLSLstd450 op
, SpvId type
,
706 SpvId src0
, SpvId src1
)
708 SpvId args
[] = { src0
, src1
};
709 return spirv_builder_emit_ext_inst(&ctx
->builder
, type
, ctx
->GLSL_std_450
,
710 op
, args
, ARRAY_SIZE(args
));
714 get_fvec_constant(struct ntv_context
*ctx
, unsigned bit_size
,
715 unsigned num_components
, float value
)
717 assert(bit_size
== 32);
719 SpvId result
= emit_float_const(ctx
, bit_size
, value
);
720 if (num_components
== 1)
723 assert(num_components
> 1);
724 SpvId components
[num_components
];
725 for (int i
= 0; i
< num_components
; i
++)
726 components
[i
] = result
;
728 SpvId type
= get_fvec_type(ctx
, bit_size
, num_components
);
729 return spirv_builder_const_composite(&ctx
->builder
, type
, components
,
734 get_uvec_constant(struct ntv_context
*ctx
, unsigned bit_size
,
735 unsigned num_components
, uint32_t value
)
737 assert(bit_size
== 32);
739 SpvId result
= emit_uint_const(ctx
, bit_size
, value
);
740 if (num_components
== 1)
743 assert(num_components
> 1);
744 SpvId components
[num_components
];
745 for (int i
= 0; i
< num_components
; i
++)
746 components
[i
] = result
;
748 SpvId type
= get_uvec_type(ctx
, bit_size
, num_components
);
749 return spirv_builder_const_composite(&ctx
->builder
, type
, components
,
754 get_ivec_constant(struct ntv_context
*ctx
, unsigned bit_size
,
755 unsigned num_components
, int32_t value
)
757 assert(bit_size
== 32);
759 SpvId result
= emit_int_const(ctx
, bit_size
, value
);
760 if (num_components
== 1)
763 assert(num_components
> 1);
764 SpvId components
[num_components
];
765 for (int i
= 0; i
< num_components
; i
++)
766 components
[i
] = result
;
768 SpvId type
= get_ivec_type(ctx
, bit_size
, num_components
);
769 return spirv_builder_const_composite(&ctx
->builder
, type
, components
,
773 static inline unsigned
774 alu_instr_src_components(const nir_alu_instr
*instr
, unsigned src
)
776 if (nir_op_infos
[instr
->op
].input_sizes
[src
] > 0)
777 return nir_op_infos
[instr
->op
].input_sizes
[src
];
779 if (instr
->dest
.dest
.is_ssa
)
780 return instr
->dest
.dest
.ssa
.num_components
;
782 return instr
->dest
.dest
.reg
.reg
->num_components
;
786 get_alu_src(struct ntv_context
*ctx
, nir_alu_instr
*alu
, unsigned src
)
788 SpvId uint_value
= get_alu_src_uint(ctx
, alu
, src
);
790 unsigned num_components
= alu_instr_src_components(alu
, src
);
791 unsigned bit_size
= nir_src_bit_size(alu
->src
[src
].src
);
792 nir_alu_type type
= nir_op_infos
[alu
->op
].input_types
[src
];
794 switch (nir_alu_type_get_base_type(type
)) {
796 assert(bit_size
== 1);
797 return uvec_to_bvec(ctx
, uint_value
, num_components
);
800 return bitcast_to_ivec(ctx
, uint_value
, bit_size
, num_components
);
806 return bitcast_to_fvec(ctx
, uint_value
, bit_size
, num_components
);
809 unreachable("unknown nir_alu_type");
814 store_alu_result(struct ntv_context
*ctx
, nir_alu_instr
*alu
, SpvId result
)
816 assert(!alu
->dest
.saturate
);
817 return store_dest(ctx
, &alu
->dest
.dest
, result
, nir_op_infos
[alu
->op
].output_type
);
821 get_dest_type(struct ntv_context
*ctx
, nir_dest
*dest
, nir_alu_type type
)
823 unsigned num_components
= nir_dest_num_components(*dest
);
824 unsigned bit_size
= nir_dest_bit_size(*dest
);
826 switch (nir_alu_type_get_base_type(type
)) {
828 return get_bvec_type(ctx
, num_components
);
831 return get_ivec_type(ctx
, bit_size
, num_components
);
834 return get_uvec_type(ctx
, bit_size
, num_components
);
837 return get_fvec_type(ctx
, bit_size
, num_components
);
840 unreachable("unsupported nir_alu_type");
845 emit_alu(struct ntv_context
*ctx
, nir_alu_instr
*alu
)
847 SpvId src
[nir_op_infos
[alu
->op
].num_inputs
];
848 for (unsigned i
= 0; i
< nir_op_infos
[alu
->op
].num_inputs
; i
++)
849 src
[i
] = get_alu_src(ctx
, alu
, i
);
851 SpvId dest_type
= get_dest_type(ctx
, &alu
->dest
.dest
,
852 nir_op_infos
[alu
->op
].output_type
);
853 unsigned bit_size
= nir_dest_bit_size(alu
->dest
.dest
);
854 unsigned num_components
= nir_dest_num_components(alu
->dest
.dest
);
859 assert(nir_op_infos
[alu
->op
].num_inputs
== 1);
863 #define UNOP(nir_op, spirv_op) \
865 assert(nir_op_infos[alu->op].num_inputs == 1); \
866 result = emit_unop(ctx, spirv_op, dest_type, src[0]); \
869 UNOP(nir_op_ineg
, SpvOpSNegate
)
870 UNOP(nir_op_fneg
, SpvOpFNegate
)
871 UNOP(nir_op_fddx
, SpvOpDPdx
)
872 UNOP(nir_op_fddy
, SpvOpDPdy
)
873 UNOP(nir_op_f2i32
, SpvOpConvertFToS
)
874 UNOP(nir_op_f2u32
, SpvOpConvertFToU
)
875 UNOP(nir_op_i2f32
, SpvOpConvertSToF
)
876 UNOP(nir_op_u2f32
, SpvOpConvertUToF
)
877 UNOP(nir_op_inot
, SpvOpNot
)
881 assert(nir_op_infos
[alu
->op
].num_inputs
== 1);
882 result
= emit_select(ctx
, dest_type
, src
[0],
883 get_ivec_constant(ctx
, 32, num_components
, 1),
884 get_ivec_constant(ctx
, 32, num_components
, 0));
888 assert(nir_op_infos
[alu
->op
].num_inputs
== 1);
889 result
= emit_select(ctx
, dest_type
, src
[0],
890 get_fvec_constant(ctx
, 32, num_components
, 1),
891 get_fvec_constant(ctx
, 32, num_components
, 0));
894 #define BUILTIN_UNOP(nir_op, spirv_op) \
896 assert(nir_op_infos[alu->op].num_inputs == 1); \
897 result = emit_builtin_unop(ctx, spirv_op, dest_type, src[0]); \
900 BUILTIN_UNOP(nir_op_fabs
, GLSLstd450FAbs
)
901 BUILTIN_UNOP(nir_op_fsqrt
, GLSLstd450Sqrt
)
902 BUILTIN_UNOP(nir_op_frsq
, GLSLstd450InverseSqrt
)
903 BUILTIN_UNOP(nir_op_flog2
, GLSLstd450Log2
)
904 BUILTIN_UNOP(nir_op_fexp2
, GLSLstd450Exp2
)
905 BUILTIN_UNOP(nir_op_ffract
, GLSLstd450Fract
)
906 BUILTIN_UNOP(nir_op_ffloor
, GLSLstd450Floor
)
907 BUILTIN_UNOP(nir_op_fceil
, GLSLstd450Ceil
)
908 BUILTIN_UNOP(nir_op_ftrunc
, GLSLstd450Trunc
)
909 BUILTIN_UNOP(nir_op_fround_even
, GLSLstd450RoundEven
)
910 BUILTIN_UNOP(nir_op_fsign
, GLSLstd450FSign
)
911 BUILTIN_UNOP(nir_op_fsin
, GLSLstd450Sin
)
912 BUILTIN_UNOP(nir_op_fcos
, GLSLstd450Cos
)
916 assert(nir_op_infos
[alu
->op
].num_inputs
== 1);
917 result
= emit_binop(ctx
, SpvOpFDiv
, dest_type
,
918 get_fvec_constant(ctx
, bit_size
, num_components
, 1),
923 assert(nir_op_infos
[alu
->op
].num_inputs
== 1);
924 result
= emit_binop(ctx
, SpvOpFOrdNotEqual
, dest_type
, src
[0],
925 get_fvec_constant(ctx
,
926 nir_src_bit_size(alu
->src
[0].src
),
931 #define BINOP(nir_op, spirv_op) \
933 assert(nir_op_infos[alu->op].num_inputs == 2); \
934 result = emit_binop(ctx, spirv_op, dest_type, src[0], src[1]); \
937 BINOP(nir_op_iadd
, SpvOpIAdd
)
938 BINOP(nir_op_isub
, SpvOpISub
)
939 BINOP(nir_op_imul
, SpvOpIMul
)
940 BINOP(nir_op_idiv
, SpvOpSDiv
)
941 BINOP(nir_op_udiv
, SpvOpUDiv
)
942 BINOP(nir_op_fadd
, SpvOpFAdd
)
943 BINOP(nir_op_fsub
, SpvOpFSub
)
944 BINOP(nir_op_fmul
, SpvOpFMul
)
945 BINOP(nir_op_fdiv
, SpvOpFDiv
)
946 BINOP(nir_op_fmod
, SpvOpFMod
)
947 BINOP(nir_op_ilt
, SpvOpSLessThan
)
948 BINOP(nir_op_ige
, SpvOpSGreaterThanEqual
)
949 BINOP(nir_op_ieq
, SpvOpIEqual
)
950 BINOP(nir_op_ine
, SpvOpINotEqual
)
951 BINOP(nir_op_flt
, SpvOpFOrdLessThan
)
952 BINOP(nir_op_fge
, SpvOpFOrdGreaterThanEqual
)
953 BINOP(nir_op_feq
, SpvOpFOrdEqual
)
954 BINOP(nir_op_fne
, SpvOpFOrdNotEqual
)
955 BINOP(nir_op_ishl
, SpvOpShiftLeftLogical
)
956 BINOP(nir_op_ishr
, SpvOpShiftRightArithmetic
)
957 BINOP(nir_op_ushr
, SpvOpShiftRightLogical
)
958 BINOP(nir_op_iand
, SpvOpBitwiseAnd
)
959 BINOP(nir_op_ior
, SpvOpBitwiseOr
)
962 #define BUILTIN_BINOP(nir_op, spirv_op) \
964 assert(nir_op_infos[alu->op].num_inputs == 2); \
965 result = emit_builtin_binop(ctx, spirv_op, dest_type, src[0], src[1]); \
968 BUILTIN_BINOP(nir_op_fmin
, GLSLstd450FMin
)
969 BUILTIN_BINOP(nir_op_fmax
, GLSLstd450FMax
)
975 assert(nir_op_infos
[alu
->op
].num_inputs
== 2);
976 result
= emit_binop(ctx
, SpvOpDot
, dest_type
, src
[0], src
[1]);
983 assert(nir_op_infos
[alu
->op
].num_inputs
== 2);
984 int num_components
= nir_dest_num_components(alu
->dest
.dest
);
985 SpvId bool_type
= get_bvec_type(ctx
, num_components
);
987 SpvId zero
= emit_float_const(ctx
, bit_size
, 0.0f
);
988 SpvId one
= emit_float_const(ctx
, bit_size
, 1.0f
);
989 if (num_components
> 1) {
990 SpvId zero_comps
[num_components
], one_comps
[num_components
];
991 for (int i
= 0; i
< num_components
; i
++) {
992 zero_comps
[i
] = zero
;
996 zero
= spirv_builder_const_composite(&ctx
->builder
, dest_type
,
997 zero_comps
, num_components
);
998 one
= spirv_builder_const_composite(&ctx
->builder
, dest_type
,
999 one_comps
, num_components
);
1004 case nir_op_seq
: op
= SpvOpFOrdEqual
; break;
1005 case nir_op_sne
: op
= SpvOpFOrdNotEqual
; break;
1006 case nir_op_slt
: op
= SpvOpFOrdLessThan
; break;
1007 case nir_op_sge
: op
= SpvOpFOrdGreaterThanEqual
; break;
1008 default: unreachable("unexpected op");
1011 result
= emit_binop(ctx
, op
, bool_type
, src
[0], src
[1]);
1012 result
= emit_select(ctx
, dest_type
, result
, one
, zero
);
1017 result
= emit_binop(ctx
, SpvOpFOrdGreaterThan
,
1018 get_bvec_type(ctx
, num_components
),
1020 get_fvec_constant(ctx
,
1021 nir_src_bit_size(alu
->src
[0].src
),
1022 num_components
, 0));
1023 result
= emit_select(ctx
, dest_type
, result
, src
[1], src
[2]);
1027 assert(nir_op_infos
[alu
->op
].num_inputs
== 3);
1028 result
= emit_select(ctx
, dest_type
, src
[0], src
[1], src
[2]);
1034 int num_inputs
= nir_op_infos
[alu
->op
].num_inputs
;
1035 assert(2 <= num_inputs
&& num_inputs
<= 4);
1036 result
= spirv_builder_emit_composite_construct(&ctx
->builder
, dest_type
,
1042 fprintf(stderr
, "emit_alu: not implemented (%s)\n",
1043 nir_op_infos
[alu
->op
].name
);
1045 unreachable("unsupported opcode");
1049 store_alu_result(ctx
, alu
, result
);
1053 emit_load_const(struct ntv_context
*ctx
, nir_load_const_instr
*load_const
)
1055 unsigned bit_size
= load_const
->def
.bit_size
;
1056 unsigned num_components
= load_const
->def
.num_components
;
1059 if (num_components
> 1) {
1060 SpvId components
[num_components
];
1062 if (bit_size
== 1) {
1063 for (int i
= 0; i
< num_components
; i
++)
1064 components
[i
] = spirv_builder_const_bool(&ctx
->builder
,
1065 load_const
->value
[i
].b
);
1067 type
= get_bvec_type(ctx
, num_components
);
1069 for (int i
= 0; i
< num_components
; i
++)
1070 components
[i
] = emit_uint_const(ctx
, bit_size
,
1071 load_const
->value
[i
].u32
);
1073 type
= get_uvec_type(ctx
, bit_size
, num_components
);
1075 constant
= spirv_builder_const_composite(&ctx
->builder
, type
,
1076 components
, num_components
);
1078 assert(num_components
== 1);
1080 constant
= spirv_builder_const_bool(&ctx
->builder
,
1081 load_const
->value
[0].b
);
1083 constant
= emit_uint_const(ctx
, bit_size
, load_const
->value
[0].u32
);
1087 constant
= bvec_to_uvec(ctx
, constant
, num_components
);
1089 store_ssa_def_uint(ctx
, &load_const
->def
, constant
);
1093 emit_load_ubo(struct ntv_context
*ctx
, nir_intrinsic_instr
*intr
)
1095 nir_const_value
*const_block_index
= nir_src_as_const_value(intr
->src
[0]);
1096 assert(const_block_index
); // no dynamic indexing for now
1097 assert(const_block_index
->u32
== 0); // we only support the default UBO for now
1099 nir_const_value
*const_offset
= nir_src_as_const_value(intr
->src
[1]);
1101 SpvId uvec4_type
= get_uvec_type(ctx
, 32, 4);
1102 SpvId pointer_type
= spirv_builder_type_pointer(&ctx
->builder
,
1103 SpvStorageClassUniform
,
1106 unsigned idx
= const_offset
->u32
;
1107 SpvId member
= emit_uint_const(ctx
, 32, 0);
1108 SpvId offset
= emit_uint_const(ctx
, 32, idx
);
1109 SpvId offsets
[] = { member
, offset
};
1110 SpvId ptr
= spirv_builder_emit_access_chain(&ctx
->builder
, pointer_type
,
1111 ctx
->ubos
[0], offsets
,
1112 ARRAY_SIZE(offsets
));
1113 SpvId result
= spirv_builder_emit_load(&ctx
->builder
, uvec4_type
, ptr
);
1115 SpvId type
= get_dest_uvec_type(ctx
, &intr
->dest
);
1116 unsigned num_components
= nir_dest_num_components(intr
->dest
);
1117 if (num_components
== 1) {
1118 uint32_t components
[] = { 0 };
1119 result
= spirv_builder_emit_composite_extract(&ctx
->builder
,
1123 } else if (num_components
< 4) {
1124 SpvId constituents
[num_components
];
1125 SpvId uint_type
= spirv_builder_type_uint(&ctx
->builder
, 32);
1126 for (uint32_t i
= 0; i
< num_components
; ++i
)
1127 constituents
[i
] = spirv_builder_emit_composite_extract(&ctx
->builder
,
1132 result
= spirv_builder_emit_composite_construct(&ctx
->builder
,
1138 store_dest_uint(ctx
, &intr
->dest
, result
);
1140 unreachable("uniform-addressing not yet supported");
1144 emit_discard(struct ntv_context
*ctx
, nir_intrinsic_instr
*intr
)
1146 assert(ctx
->block_started
);
1147 spirv_builder_emit_kill(&ctx
->builder
);
1148 /* discard is weird in NIR, so let's just create an unreachable block after
1149 it and hope that the vulkan driver will DCE any instructinos in it. */
1150 spirv_builder_label(&ctx
->builder
, spirv_builder_new_id(&ctx
->builder
));
1154 emit_load_deref(struct ntv_context
*ctx
, nir_intrinsic_instr
*intr
)
1156 /* uint is a bit of a lie here; it's really just a pointer */
1157 SpvId ptr
= get_src_uint(ctx
, intr
->src
);
1159 nir_variable
*var
= nir_intrinsic_get_var(intr
, 0);
1160 SpvId result
= spirv_builder_emit_load(&ctx
->builder
,
1161 get_glsl_type(ctx
, var
->type
),
1163 unsigned num_components
= nir_dest_num_components(intr
->dest
);
1164 unsigned bit_size
= nir_dest_bit_size(intr
->dest
);
1165 result
= bitcast_to_uvec(ctx
, result
, bit_size
, num_components
);
1166 store_dest_uint(ctx
, &intr
->dest
, result
);
1170 emit_store_deref(struct ntv_context
*ctx
, nir_intrinsic_instr
*intr
)
1172 /* uint is a bit of a lie here; it's really just a pointer */
1173 SpvId ptr
= get_src_uint(ctx
, &intr
->src
[0]);
1174 SpvId src
= get_src_uint(ctx
, &intr
->src
[1]);
1176 nir_variable
*var
= nir_intrinsic_get_var(intr
, 0);
1177 SpvId type
= get_glsl_type(ctx
, glsl_without_array(var
->type
));
1178 SpvId result
= emit_bitcast(ctx
, type
, src
);
1179 spirv_builder_emit_store(&ctx
->builder
, ptr
, result
);
1183 emit_load_front_face(struct ntv_context
*ctx
, nir_intrinsic_instr
*intr
)
1185 SpvId var_type
= get_glsl_type(ctx
, glsl_bool_type());
1186 if (!ctx
->front_face_var
) {
1187 SpvId pointer_type
= spirv_builder_type_pointer(&ctx
->builder
,
1188 SpvStorageClassInput
,
1190 ctx
->front_face_var
= spirv_builder_emit_var(&ctx
->builder
,
1192 SpvStorageClassInput
);
1193 spirv_builder_emit_name(&ctx
->builder
, ctx
->front_face_var
,
1195 spirv_builder_emit_builtin(&ctx
->builder
, ctx
->front_face_var
,
1196 SpvBuiltInFrontFacing
);
1198 assert(ctx
->num_entry_ifaces
< ARRAY_SIZE(ctx
->entry_ifaces
));
1199 ctx
->entry_ifaces
[ctx
->num_entry_ifaces
++] = ctx
->front_face_var
;
1202 SpvId result
= spirv_builder_emit_load(&ctx
->builder
, var_type
,
1203 ctx
->front_face_var
);
1204 assert(1 == nir_dest_num_components(intr
->dest
));
1205 result
= bvec_to_uvec(ctx
, result
, 1);
1206 store_dest_uint(ctx
, &intr
->dest
, result
);
1210 emit_intrinsic(struct ntv_context
*ctx
, nir_intrinsic_instr
*intr
)
1212 switch (intr
->intrinsic
) {
1213 case nir_intrinsic_load_ubo
:
1214 emit_load_ubo(ctx
, intr
);
1217 case nir_intrinsic_discard
:
1218 emit_discard(ctx
, intr
);
1221 case nir_intrinsic_load_deref
:
1222 emit_load_deref(ctx
, intr
);
1225 case nir_intrinsic_store_deref
:
1226 emit_store_deref(ctx
, intr
);
1229 case nir_intrinsic_load_front_face
:
1230 emit_load_front_face(ctx
, intr
);
1234 fprintf(stderr
, "emit_intrinsic: not implemented (%s)\n",
1235 nir_intrinsic_infos
[intr
->intrinsic
].name
);
1236 unreachable("unsupported intrinsic");
1241 emit_undef(struct ntv_context
*ctx
, nir_ssa_undef_instr
*undef
)
1243 SpvId type
= get_uvec_type(ctx
, undef
->def
.bit_size
,
1244 undef
->def
.num_components
);
1246 store_ssa_def_uint(ctx
, &undef
->def
,
1247 spirv_builder_emit_undef(&ctx
->builder
, type
));
1251 get_src_float(struct ntv_context
*ctx
, nir_src
*src
)
1253 SpvId def
= get_src_uint(ctx
, src
);
1254 unsigned num_components
= nir_src_num_components(*src
);
1255 unsigned bit_size
= nir_src_bit_size(*src
);
1256 return bitcast_to_fvec(ctx
, def
, bit_size
, num_components
);
1260 emit_tex(struct ntv_context
*ctx
, nir_tex_instr
*tex
)
1262 assert(tex
->op
== nir_texop_tex
||
1263 tex
->op
== nir_texop_txb
||
1264 tex
->op
== nir_texop_txl
);
1265 assert(nir_alu_type_get_base_type(tex
->dest_type
) == nir_type_float
);
1266 assert(tex
->texture_index
== tex
->sampler_index
);
1268 SpvId coord
= 0, proj
= 0, bias
= 0, lod
= 0, dref
= 0;
1269 unsigned coord_components
;
1270 for (unsigned i
= 0; i
< tex
->num_srcs
; i
++) {
1271 switch (tex
->src
[i
].src_type
) {
1272 case nir_tex_src_coord
:
1273 coord
= get_src_float(ctx
, &tex
->src
[i
].src
);
1274 coord_components
= nir_src_num_components(tex
->src
[i
].src
);
1277 case nir_tex_src_projector
:
1278 assert(nir_src_num_components(tex
->src
[i
].src
) == 1);
1279 proj
= get_src_float(ctx
, &tex
->src
[i
].src
);
1283 case nir_tex_src_bias
:
1284 assert(tex
->op
== nir_texop_txb
);
1285 bias
= get_src_float(ctx
, &tex
->src
[i
].src
);
1289 case nir_tex_src_lod
:
1290 assert(nir_src_num_components(tex
->src
[i
].src
) == 1);
1291 lod
= get_src_float(ctx
, &tex
->src
[i
].src
);
1295 case nir_tex_src_comparator
:
1296 assert(nir_src_num_components(tex
->src
[i
].src
) == 1);
1297 dref
= get_src_float(ctx
, &tex
->src
[i
].src
);
1302 fprintf(stderr
, "texture source: %d\n", tex
->src
[i
].src_type
);
1303 unreachable("unknown texture source");
1307 if (lod
== 0 && ctx
->stage
!= MESA_SHADER_FRAGMENT
) {
1308 lod
= emit_float_const(ctx
, 32, 0.0f
);
1313 SpvDim dimension
= type_to_dim(tex
->sampler_dim
, &is_ms
);
1314 SpvId float_type
= spirv_builder_type_float(&ctx
->builder
, 32);
1315 SpvId image_type
= spirv_builder_type_image(&ctx
->builder
, float_type
,
1316 dimension
, false, tex
->is_array
, is_ms
, 1,
1317 SpvImageFormatUnknown
);
1318 SpvId sampled_type
= spirv_builder_type_sampled_image(&ctx
->builder
,
1321 assert(tex
->texture_index
< ctx
->num_samplers
);
1322 SpvId load
= spirv_builder_emit_load(&ctx
->builder
, sampled_type
,
1323 ctx
->samplers
[tex
->texture_index
]);
1325 SpvId dest_type
= get_dest_type(ctx
, &tex
->dest
, tex
->dest_type
);
1328 SpvId constituents
[coord_components
+ 1];
1329 if (coord_components
== 1)
1330 constituents
[0] = coord
;
1332 assert(coord_components
> 1);
1333 SpvId float_type
= spirv_builder_type_float(&ctx
->builder
, 32);
1334 for (uint32_t i
= 0; i
< coord_components
; ++i
)
1335 constituents
[i
] = spirv_builder_emit_composite_extract(&ctx
->builder
,
1341 constituents
[coord_components
++] = proj
;
1343 SpvId vec_type
= get_fvec_type(ctx
, 32, coord_components
);
1344 coord
= spirv_builder_emit_composite_construct(&ctx
->builder
,
1350 SpvId actual_dest_type
= dest_type
;
1352 actual_dest_type
= float_type
;
1354 SpvId result
= spirv_builder_emit_image_sample(&ctx
->builder
,
1355 actual_dest_type
, load
,
1359 spirv_builder_emit_decoration(&ctx
->builder
, result
,
1360 SpvDecorationRelaxedPrecision
);
1363 SpvId components
[4] = { result
, result
, result
, result
};
1364 result
= spirv_builder_emit_composite_construct(&ctx
->builder
,
1370 store_dest(ctx
, &tex
->dest
, result
, tex
->dest_type
);
1374 start_block(struct ntv_context
*ctx
, SpvId label
)
1376 /* terminate previous block if needed */
1377 if (ctx
->block_started
)
1378 spirv_builder_emit_branch(&ctx
->builder
, label
);
1380 /* start new block */
1381 spirv_builder_label(&ctx
->builder
, label
);
1382 ctx
->block_started
= true;
1386 branch(struct ntv_context
*ctx
, SpvId label
)
1388 assert(ctx
->block_started
);
1389 spirv_builder_emit_branch(&ctx
->builder
, label
);
1390 ctx
->block_started
= false;
1394 branch_conditional(struct ntv_context
*ctx
, SpvId condition
, SpvId then_id
,
1397 assert(ctx
->block_started
);
1398 spirv_builder_emit_branch_conditional(&ctx
->builder
, condition
,
1400 ctx
->block_started
= false;
1404 emit_jump(struct ntv_context
*ctx
, nir_jump_instr
*jump
)
1406 switch (jump
->type
) {
1407 case nir_jump_break
:
1408 assert(ctx
->loop_break
);
1409 branch(ctx
, ctx
->loop_break
);
1412 case nir_jump_continue
:
1413 assert(ctx
->loop_cont
);
1414 branch(ctx
, ctx
->loop_cont
);
1418 unreachable("Unsupported jump type\n");
1423 emit_deref_var(struct ntv_context
*ctx
, nir_deref_instr
*deref
)
1425 assert(deref
->deref_type
== nir_deref_type_var
);
1427 struct hash_entry
*he
= _mesa_hash_table_search(ctx
->vars
, deref
->var
);
1429 SpvId result
= (SpvId
)(intptr_t)he
->data
;
1430 /* uint is a bit of a lie here, it's really just an opaque type */
1431 store_dest_uint(ctx
, &deref
->dest
, result
);
1435 emit_deref_array(struct ntv_context
*ctx
, nir_deref_instr
*deref
)
1437 assert(deref
->deref_type
== nir_deref_type_array
);
1438 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
1440 SpvStorageClass storage_class
;
1441 switch (var
->data
.mode
) {
1442 case nir_var_shader_in
:
1443 storage_class
= SpvStorageClassInput
;
1446 case nir_var_shader_out
:
1447 storage_class
= SpvStorageClassOutput
;
1451 unreachable("Unsupported nir_variable_mode\n");
1454 SpvId index
= get_src_uint(ctx
, &deref
->arr
.index
);
1456 SpvId ptr_type
= spirv_builder_type_pointer(&ctx
->builder
,
1458 get_glsl_type(ctx
, deref
->type
));
1460 SpvId result
= spirv_builder_emit_access_chain(&ctx
->builder
,
1462 get_src_uint(ctx
, &deref
->parent
),
1464 /* uint is a bit of a lie here, it's really just an opaque type */
1465 store_dest_uint(ctx
, &deref
->dest
, result
);
1469 emit_deref(struct ntv_context
*ctx
, nir_deref_instr
*deref
)
1471 switch (deref
->deref_type
) {
1472 case nir_deref_type_var
:
1473 emit_deref_var(ctx
, deref
);
1476 case nir_deref_type_array
:
1477 emit_deref_array(ctx
, deref
);
1481 unreachable("unexpected deref_type");
1486 emit_block(struct ntv_context
*ctx
, struct nir_block
*block
)
1488 start_block(ctx
, block_label(ctx
, block
));
1489 nir_foreach_instr(instr
, block
) {
1490 switch (instr
->type
) {
1491 case nir_instr_type_alu
:
1492 emit_alu(ctx
, nir_instr_as_alu(instr
));
1494 case nir_instr_type_intrinsic
:
1495 emit_intrinsic(ctx
, nir_instr_as_intrinsic(instr
));
1497 case nir_instr_type_load_const
:
1498 emit_load_const(ctx
, nir_instr_as_load_const(instr
));
1500 case nir_instr_type_ssa_undef
:
1501 emit_undef(ctx
, nir_instr_as_ssa_undef(instr
));
1503 case nir_instr_type_tex
:
1504 emit_tex(ctx
, nir_instr_as_tex(instr
));
1506 case nir_instr_type_phi
:
1507 unreachable("nir_instr_type_phi not supported");
1509 case nir_instr_type_jump
:
1510 emit_jump(ctx
, nir_instr_as_jump(instr
));
1512 case nir_instr_type_call
:
1513 unreachable("nir_instr_type_call not supported");
1515 case nir_instr_type_parallel_copy
:
1516 unreachable("nir_instr_type_parallel_copy not supported");
1518 case nir_instr_type_deref
:
1519 emit_deref(ctx
, nir_instr_as_deref(instr
));
1526 emit_cf_list(struct ntv_context
*ctx
, struct exec_list
*list
);
1529 get_src_bool(struct ntv_context
*ctx
, nir_src
*src
)
1531 SpvId def
= get_src_uint(ctx
, src
);
1532 assert(nir_src_bit_size(*src
) == 1);
1533 unsigned num_components
= nir_src_num_components(*src
);
1534 return uvec_to_bvec(ctx
, def
, num_components
);
1538 emit_if(struct ntv_context
*ctx
, nir_if
*if_stmt
)
1540 SpvId condition
= get_src_bool(ctx
, &if_stmt
->condition
);
1542 SpvId header_id
= spirv_builder_new_id(&ctx
->builder
);
1543 SpvId then_id
= block_label(ctx
, nir_if_first_then_block(if_stmt
));
1544 SpvId endif_id
= spirv_builder_new_id(&ctx
->builder
);
1545 SpvId else_id
= endif_id
;
1547 bool has_else
= !exec_list_is_empty(&if_stmt
->else_list
);
1549 assert(nir_if_first_else_block(if_stmt
)->index
< ctx
->num_blocks
);
1550 else_id
= block_label(ctx
, nir_if_first_else_block(if_stmt
));
1553 /* create a header-block */
1554 start_block(ctx
, header_id
);
1555 spirv_builder_emit_selection_merge(&ctx
->builder
, endif_id
,
1556 SpvSelectionControlMaskNone
);
1557 branch_conditional(ctx
, condition
, then_id
, else_id
);
1559 emit_cf_list(ctx
, &if_stmt
->then_list
);
1562 if (ctx
->block_started
)
1563 branch(ctx
, endif_id
);
1565 emit_cf_list(ctx
, &if_stmt
->else_list
);
1568 start_block(ctx
, endif_id
);
1572 emit_loop(struct ntv_context
*ctx
, nir_loop
*loop
)
1574 SpvId header_id
= spirv_builder_new_id(&ctx
->builder
);
1575 SpvId begin_id
= block_label(ctx
, nir_loop_first_block(loop
));
1576 SpvId break_id
= spirv_builder_new_id(&ctx
->builder
);
1577 SpvId cont_id
= spirv_builder_new_id(&ctx
->builder
);
1579 /* create a header-block */
1580 start_block(ctx
, header_id
);
1581 spirv_builder_loop_merge(&ctx
->builder
, break_id
, cont_id
, SpvLoopControlMaskNone
);
1582 branch(ctx
, begin_id
);
1584 SpvId save_break
= ctx
->loop_break
;
1585 SpvId save_cont
= ctx
->loop_cont
;
1586 ctx
->loop_break
= break_id
;
1587 ctx
->loop_cont
= cont_id
;
1589 emit_cf_list(ctx
, &loop
->body
);
1591 ctx
->loop_break
= save_break
;
1592 ctx
->loop_cont
= save_cont
;
1594 branch(ctx
, cont_id
);
1595 start_block(ctx
, cont_id
);
1596 branch(ctx
, header_id
);
1598 start_block(ctx
, break_id
);
1602 emit_cf_list(struct ntv_context
*ctx
, struct exec_list
*list
)
1604 foreach_list_typed(nir_cf_node
, node
, node
, list
) {
1605 switch (node
->type
) {
1606 case nir_cf_node_block
:
1607 emit_block(ctx
, nir_cf_node_as_block(node
));
1610 case nir_cf_node_if
:
1611 emit_if(ctx
, nir_cf_node_as_if(node
));
1614 case nir_cf_node_loop
:
1615 emit_loop(ctx
, nir_cf_node_as_loop(node
));
1618 case nir_cf_node_function
:
1619 unreachable("nir_cf_node_function not supported");
1625 struct spirv_shader
*
1626 nir_to_spirv(struct nir_shader
*s
)
1628 struct spirv_shader
*ret
= NULL
;
1630 struct ntv_context ctx
= {};
1632 switch (s
->info
.stage
) {
1633 case MESA_SHADER_VERTEX
:
1634 case MESA_SHADER_FRAGMENT
:
1635 case MESA_SHADER_COMPUTE
:
1636 spirv_builder_emit_cap(&ctx
.builder
, SpvCapabilityShader
);
1639 case MESA_SHADER_TESS_CTRL
:
1640 case MESA_SHADER_TESS_EVAL
:
1641 spirv_builder_emit_cap(&ctx
.builder
, SpvCapabilityTessellation
);
1644 case MESA_SHADER_GEOMETRY
:
1645 spirv_builder_emit_cap(&ctx
.builder
, SpvCapabilityGeometry
);
1649 unreachable("invalid stage");
1652 // TODO: only enable when needed
1653 if (s
->info
.stage
== MESA_SHADER_FRAGMENT
)
1654 spirv_builder_emit_cap(&ctx
.builder
, SpvCapabilitySampled1D
);
1656 ctx
.stage
= s
->info
.stage
;
1657 ctx
.GLSL_std_450
= spirv_builder_import(&ctx
.builder
, "GLSL.std.450");
1658 spirv_builder_emit_source(&ctx
.builder
, SpvSourceLanguageGLSL
, 450);
1660 spirv_builder_emit_mem_model(&ctx
.builder
, SpvAddressingModelLogical
,
1661 SpvMemoryModelGLSL450
);
1663 SpvExecutionModel exec_model
;
1664 switch (s
->info
.stage
) {
1665 case MESA_SHADER_VERTEX
:
1666 exec_model
= SpvExecutionModelVertex
;
1668 case MESA_SHADER_TESS_CTRL
:
1669 exec_model
= SpvExecutionModelTessellationControl
;
1671 case MESA_SHADER_TESS_EVAL
:
1672 exec_model
= SpvExecutionModelTessellationEvaluation
;
1674 case MESA_SHADER_GEOMETRY
:
1675 exec_model
= SpvExecutionModelGeometry
;
1677 case MESA_SHADER_FRAGMENT
:
1678 exec_model
= SpvExecutionModelFragment
;
1680 case MESA_SHADER_COMPUTE
:
1681 exec_model
= SpvExecutionModelGLCompute
;
1684 unreachable("invalid stage");
1687 SpvId type_void
= spirv_builder_type_void(&ctx
.builder
);
1688 SpvId type_main
= spirv_builder_type_function(&ctx
.builder
, type_void
,
1690 SpvId entry_point
= spirv_builder_new_id(&ctx
.builder
);
1691 spirv_builder_emit_name(&ctx
.builder
, entry_point
, "main");
1693 ctx
.vars
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
1694 _mesa_key_pointer_equal
);
1696 nir_foreach_variable(var
, &s
->inputs
)
1697 emit_input(&ctx
, var
);
1699 nir_foreach_variable(var
, &s
->outputs
)
1700 emit_output(&ctx
, var
);
1702 nir_foreach_variable(var
, &s
->uniforms
)
1703 emit_uniform(&ctx
, var
);
1705 if (s
->info
.stage
== MESA_SHADER_FRAGMENT
) {
1706 spirv_builder_emit_exec_mode(&ctx
.builder
, entry_point
,
1707 SpvExecutionModeOriginUpperLeft
);
1708 if (s
->info
.outputs_written
& BITFIELD64_BIT(FRAG_RESULT_DEPTH
))
1709 spirv_builder_emit_exec_mode(&ctx
.builder
, entry_point
,
1710 SpvExecutionModeDepthReplacing
);
1714 spirv_builder_function(&ctx
.builder
, entry_point
, type_void
,
1715 SpvFunctionControlMaskNone
,
1718 nir_function_impl
*entry
= nir_shader_get_entrypoint(s
);
1719 nir_metadata_require(entry
, nir_metadata_block_index
);
1721 ctx
.defs
= (SpvId
*)malloc(sizeof(SpvId
) * entry
->ssa_alloc
);
1724 ctx
.num_defs
= entry
->ssa_alloc
;
1726 nir_index_local_regs(entry
);
1727 ctx
.regs
= malloc(sizeof(SpvId
) * entry
->reg_alloc
);
1730 ctx
.num_regs
= entry
->reg_alloc
;
1732 SpvId
*block_ids
= (SpvId
*)malloc(sizeof(SpvId
) * entry
->num_blocks
);
1736 for (int i
= 0; i
< entry
->num_blocks
; ++i
)
1737 block_ids
[i
] = spirv_builder_new_id(&ctx
.builder
);
1739 ctx
.block_ids
= block_ids
;
1740 ctx
.num_blocks
= entry
->num_blocks
;
1742 /* emit a block only for the variable declarations */
1743 start_block(&ctx
, spirv_builder_new_id(&ctx
.builder
));
1744 foreach_list_typed(nir_register
, reg
, node
, &entry
->registers
) {
1745 SpvId type
= get_uvec_type(&ctx
, reg
->bit_size
, reg
->num_components
);
1746 SpvId pointer_type
= spirv_builder_type_pointer(&ctx
.builder
,
1747 SpvStorageClassFunction
,
1749 SpvId var
= spirv_builder_emit_var(&ctx
.builder
, pointer_type
,
1750 SpvStorageClassFunction
);
1752 ctx
.regs
[reg
->index
] = var
;
1755 emit_cf_list(&ctx
, &entry
->body
);
1759 spirv_builder_return(&ctx
.builder
); // doesn't belong here, but whatevz
1760 spirv_builder_function_end(&ctx
.builder
);
1762 spirv_builder_emit_entry_point(&ctx
.builder
, exec_model
, entry_point
,
1763 "main", ctx
.entry_ifaces
,
1764 ctx
.num_entry_ifaces
);
1766 size_t num_words
= spirv_builder_get_num_words(&ctx
.builder
);
1768 ret
= CALLOC_STRUCT(spirv_shader
);
1772 ret
->words
= MALLOC(sizeof(uint32_t) * num_words
);
1776 ret
->num_words
= spirv_builder_get_words(&ctx
.builder
, ret
->words
, num_words
);
1777 assert(ret
->num_words
== num_words
);
1784 spirv_shader_delete(ret
);
1787 _mesa_hash_table_destroy(ctx
.vars
, NULL
);
1793 spirv_shader_delete(struct spirv_shader
*s
)