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
;
42 SpvId samplers
[PIPE_MAX_SAMPLERS
];
44 SpvId entry_ifaces
[PIPE_MAX_SHADER_INPUTS
* 4 + PIPE_MAX_SHADER_OUTPUTS
* 4];
45 size_t num_entry_ifaces
;
53 struct hash_table
*vars
; /* nir_variable -> SpvId */
55 const SpvId
*block_ids
;
58 SpvId loop_break
, loop_cont
;
62 get_fvec_constant(struct ntv_context
*ctx
, int bit_size
, int num_components
,
63 const float values
[]);
66 get_uvec_constant(struct ntv_context
*ctx
, int bit_size
, int num_components
,
67 const uint32_t values
[]);
70 emit_unop(struct ntv_context
*ctx
, SpvOp op
, SpvId type
, SpvId src
);
73 emit_binop(struct ntv_context
*ctx
, SpvOp op
, SpvId type
,
74 SpvId src0
, SpvId src1
);
77 emit_triop(struct ntv_context
*ctx
, SpvOp op
, SpvId type
,
78 SpvId src0
, SpvId src1
, SpvId src2
);
81 get_bvec_type(struct ntv_context
*ctx
, int num_components
)
83 SpvId bool_type
= spirv_builder_type_bool(&ctx
->builder
);
84 if (num_components
> 1)
85 return spirv_builder_type_vector(&ctx
->builder
, bool_type
,
88 assert(num_components
== 1);
93 block_label(struct ntv_context
*ctx
, nir_block
*block
)
95 assert(block
->index
< ctx
->num_blocks
);
96 return ctx
->block_ids
[block
->index
];
100 get_fvec_type(struct ntv_context
*ctx
, unsigned bit_size
, unsigned num_components
)
102 assert(bit_size
== 32); // only 32-bit floats supported so far
104 SpvId float_type
= spirv_builder_type_float(&ctx
->builder
, bit_size
);
105 if (num_components
> 1)
106 return spirv_builder_type_vector(&ctx
->builder
, float_type
,
109 assert(num_components
== 1);
114 get_ivec_type(struct ntv_context
*ctx
, unsigned bit_size
, unsigned num_components
)
116 assert(bit_size
== 32); // only 32-bit ints supported so far
118 SpvId int_type
= spirv_builder_type_int(&ctx
->builder
, bit_size
);
119 if (num_components
> 1)
120 return spirv_builder_type_vector(&ctx
->builder
, int_type
,
123 assert(num_components
== 1);
128 get_uvec_type(struct ntv_context
*ctx
, unsigned bit_size
, unsigned num_components
)
130 assert(bit_size
== 32); // only 32-bit uints supported so far
132 SpvId uint_type
= spirv_builder_type_uint(&ctx
->builder
, bit_size
);
133 if (num_components
> 1)
134 return spirv_builder_type_vector(&ctx
->builder
, uint_type
,
137 assert(num_components
== 1);
142 get_dest_uvec_type(struct ntv_context
*ctx
, nir_dest
*dest
)
144 return get_uvec_type(ctx
, nir_dest_bit_size(*dest
),
145 nir_dest_num_components(*dest
));
149 get_glsl_basetype(struct ntv_context
*ctx
, enum glsl_base_type type
)
152 case GLSL_TYPE_FLOAT
:
153 return spirv_builder_type_float(&ctx
->builder
, 32);
156 return spirv_builder_type_int(&ctx
->builder
, 32);
159 return spirv_builder_type_uint(&ctx
->builder
, 32);
160 /* TODO: handle more types */
163 unreachable("unknown GLSL type");
168 get_glsl_type(struct ntv_context
*ctx
, const struct glsl_type
*type
)
171 if (glsl_type_is_scalar(type
))
172 return get_glsl_basetype(ctx
, glsl_get_base_type(type
));
174 if (glsl_type_is_vector(type
))
175 return spirv_builder_type_vector(&ctx
->builder
,
176 get_glsl_basetype(ctx
, glsl_get_base_type(type
)),
177 glsl_get_vector_elements(type
));
179 if (glsl_type_is_array(type
)) {
180 SpvId ret
= spirv_builder_type_array(&ctx
->builder
,
181 get_glsl_type(ctx
, glsl_get_array_element(type
)),
182 spirv_builder_const_uint(&ctx
->builder
, 32, glsl_get_length(type
)));
183 uint32_t stride
= glsl_get_explicit_stride(type
);
185 spirv_builder_emit_array_stride(&ctx
->builder
, ret
, stride
);
190 unreachable("we shouldn't get here, I think...");
194 emit_input(struct ntv_context
*ctx
, struct nir_variable
*var
)
196 SpvId var_type
= get_glsl_type(ctx
, var
->type
);
197 SpvId pointer_type
= spirv_builder_type_pointer(&ctx
->builder
,
198 SpvStorageClassInput
,
200 SpvId var_id
= spirv_builder_emit_var(&ctx
->builder
, pointer_type
,
201 SpvStorageClassInput
);
204 spirv_builder_emit_name(&ctx
->builder
, var_id
, var
->name
);
206 if (ctx
->stage
== MESA_SHADER_FRAGMENT
) {
207 if (var
->data
.location
>= VARYING_SLOT_VAR0
||
208 (var
->data
.location
>= VARYING_SLOT_COL0
&&
209 var
->data
.location
<= VARYING_SLOT_TEX7
)) {
210 spirv_builder_emit_location(&ctx
->builder
, var_id
,
211 ctx
->var_location
++);
213 switch (var
->data
.location
) {
214 case VARYING_SLOT_POS
:
215 spirv_builder_emit_builtin(&ctx
->builder
, var_id
, SpvBuiltInFragCoord
);
218 case VARYING_SLOT_PNTC
:
219 spirv_builder_emit_builtin(&ctx
->builder
, var_id
, SpvBuiltInPointCoord
);
223 debug_printf("unknown varying slot: %s\n", gl_varying_slot_name(var
->data
.location
));
224 unreachable("unexpected varying slot");
228 spirv_builder_emit_location(&ctx
->builder
, var_id
,
229 var
->data
.driver_location
);
232 if (var
->data
.location_frac
)
233 spirv_builder_emit_component(&ctx
->builder
, var_id
,
234 var
->data
.location_frac
);
236 if (var
->data
.interpolation
== INTERP_MODE_FLAT
)
237 spirv_builder_emit_decoration(&ctx
->builder
, var_id
, SpvDecorationFlat
);
239 _mesa_hash_table_insert(ctx
->vars
, var
, (void *)(intptr_t)var_id
);
241 assert(ctx
->num_entry_ifaces
< ARRAY_SIZE(ctx
->entry_ifaces
));
242 ctx
->entry_ifaces
[ctx
->num_entry_ifaces
++] = var_id
;
246 emit_output(struct ntv_context
*ctx
, struct nir_variable
*var
)
248 SpvId var_type
= get_glsl_type(ctx
, var
->type
);
249 SpvId pointer_type
= spirv_builder_type_pointer(&ctx
->builder
,
250 SpvStorageClassOutput
,
252 SpvId var_id
= spirv_builder_emit_var(&ctx
->builder
, pointer_type
,
253 SpvStorageClassOutput
);
255 spirv_builder_emit_name(&ctx
->builder
, var_id
, var
->name
);
258 if (ctx
->stage
== MESA_SHADER_VERTEX
) {
259 if (var
->data
.location
>= VARYING_SLOT_VAR0
||
260 (var
->data
.location
>= VARYING_SLOT_COL0
&&
261 var
->data
.location
<= VARYING_SLOT_TEX7
)) {
262 spirv_builder_emit_location(&ctx
->builder
, var_id
,
263 ctx
->var_location
++);
265 switch (var
->data
.location
) {
266 case VARYING_SLOT_POS
:
267 spirv_builder_emit_builtin(&ctx
->builder
, var_id
, SpvBuiltInPosition
);
270 case VARYING_SLOT_PSIZ
:
271 spirv_builder_emit_builtin(&ctx
->builder
, var_id
, SpvBuiltInPointSize
);
274 case VARYING_SLOT_CLIP_DIST0
:
275 assert(glsl_type_is_array(var
->type
));
276 spirv_builder_emit_builtin(&ctx
->builder
, var_id
, SpvBuiltInClipDistance
);
280 debug_printf("unknown varying slot: %s\n", gl_varying_slot_name(var
->data
.location
));
281 unreachable("unexpected varying slot");
284 } else if (ctx
->stage
== MESA_SHADER_FRAGMENT
) {
285 if (var
->data
.location
>= FRAG_RESULT_DATA0
)
286 spirv_builder_emit_location(&ctx
->builder
, var_id
,
287 var
->data
.location
- FRAG_RESULT_DATA0
);
289 switch (var
->data
.location
) {
290 case FRAG_RESULT_COLOR
:
291 spirv_builder_emit_location(&ctx
->builder
, var_id
, 0);
294 case FRAG_RESULT_DEPTH
:
295 spirv_builder_emit_builtin(&ctx
->builder
, var_id
, SpvBuiltInFragDepth
);
299 spirv_builder_emit_location(&ctx
->builder
, var_id
,
300 var
->data
.driver_location
);
305 if (var
->data
.location_frac
)
306 spirv_builder_emit_component(&ctx
->builder
, var_id
,
307 var
->data
.location_frac
);
309 _mesa_hash_table_insert(ctx
->vars
, var
, (void *)(intptr_t)var_id
);
311 assert(ctx
->num_entry_ifaces
< ARRAY_SIZE(ctx
->entry_ifaces
));
312 ctx
->entry_ifaces
[ctx
->num_entry_ifaces
++] = var_id
;
316 type_to_dim(enum glsl_sampler_dim gdim
, bool *is_ms
)
320 case GLSL_SAMPLER_DIM_1D
:
322 case GLSL_SAMPLER_DIM_2D
:
324 case GLSL_SAMPLER_DIM_RECT
:
326 case GLSL_SAMPLER_DIM_CUBE
:
328 case GLSL_SAMPLER_DIM_3D
:
330 case GLSL_SAMPLER_DIM_MS
:
334 fprintf(stderr
, "unknown sampler type %d\n", gdim
);
341 emit_sampler(struct ntv_context
*ctx
, struct nir_variable
*var
)
344 SpvDim dimension
= type_to_dim(glsl_get_sampler_dim(var
->type
), &is_ms
);
345 SpvId float_type
= spirv_builder_type_float(&ctx
->builder
, 32);
346 SpvId image_type
= spirv_builder_type_image(&ctx
->builder
, float_type
,
347 dimension
, false, glsl_sampler_type_is_array(var
->type
), is_ms
, 1,
348 SpvImageFormatUnknown
);
350 SpvId sampled_type
= spirv_builder_type_sampled_image(&ctx
->builder
,
352 SpvId pointer_type
= spirv_builder_type_pointer(&ctx
->builder
,
353 SpvStorageClassUniformConstant
,
355 SpvId var_id
= spirv_builder_emit_var(&ctx
->builder
, pointer_type
,
356 SpvStorageClassUniformConstant
);
359 spirv_builder_emit_name(&ctx
->builder
, var_id
, var
->name
);
361 assert(ctx
->num_samplers
< ARRAY_SIZE(ctx
->samplers
));
362 ctx
->samplers
[ctx
->num_samplers
++] = var_id
;
364 spirv_builder_emit_descriptor_set(&ctx
->builder
, var_id
,
365 var
->data
.descriptor_set
);
366 spirv_builder_emit_binding(&ctx
->builder
, var_id
, var
->data
.binding
);
370 emit_ubo(struct ntv_context
*ctx
, struct nir_variable
*var
)
372 uint32_t size
= glsl_count_attribute_slots(var
->type
, false);
373 SpvId vec4_type
= get_uvec_type(ctx
, 32, 4);
374 SpvId array_length
= spirv_builder_const_uint(&ctx
->builder
, 32, size
);
375 SpvId array_type
= spirv_builder_type_array(&ctx
->builder
, vec4_type
,
377 spirv_builder_emit_array_stride(&ctx
->builder
, array_type
, 16);
379 // wrap UBO-array in a struct
380 SpvId struct_type
= spirv_builder_type_struct(&ctx
->builder
, &array_type
, 1);
382 char struct_name
[100];
383 snprintf(struct_name
, sizeof(struct_name
), "struct_%s", var
->name
);
384 spirv_builder_emit_name(&ctx
->builder
, struct_type
, struct_name
);
387 spirv_builder_emit_decoration(&ctx
->builder
, struct_type
,
389 spirv_builder_emit_member_offset(&ctx
->builder
, struct_type
, 0, 0);
392 SpvId pointer_type
= spirv_builder_type_pointer(&ctx
->builder
,
393 SpvStorageClassUniform
,
396 SpvId var_id
= spirv_builder_emit_var(&ctx
->builder
, pointer_type
,
397 SpvStorageClassUniform
);
399 spirv_builder_emit_name(&ctx
->builder
, var_id
, var
->name
);
401 assert(ctx
->num_ubos
< ARRAY_SIZE(ctx
->ubos
));
402 ctx
->ubos
[ctx
->num_ubos
++] = var_id
;
404 spirv_builder_emit_descriptor_set(&ctx
->builder
, var_id
,
405 var
->data
.descriptor_set
);
406 spirv_builder_emit_binding(&ctx
->builder
, var_id
, var
->data
.binding
);
410 emit_uniform(struct ntv_context
*ctx
, struct nir_variable
*var
)
412 if (var
->data
.mode
== nir_var_mem_ubo
)
415 assert(var
->data
.mode
== nir_var_uniform
);
416 if (glsl_type_is_sampler(var
->type
))
417 emit_sampler(ctx
, var
);
422 get_src_uint_ssa(struct ntv_context
*ctx
, const nir_ssa_def
*ssa
)
424 assert(ssa
->index
< ctx
->num_defs
);
425 assert(ctx
->defs
[ssa
->index
] != 0);
426 return ctx
->defs
[ssa
->index
];
430 get_var_from_reg(struct ntv_context
*ctx
, nir_register
*reg
)
432 assert(reg
->index
< ctx
->num_regs
);
433 assert(ctx
->regs
[reg
->index
] != 0);
434 return ctx
->regs
[reg
->index
];
438 get_src_uint_reg(struct ntv_context
*ctx
, const nir_reg_src
*reg
)
441 assert(!reg
->indirect
);
442 assert(!reg
->base_offset
);
444 SpvId var
= get_var_from_reg(ctx
, reg
->reg
);
445 SpvId type
= get_uvec_type(ctx
, reg
->reg
->bit_size
, reg
->reg
->num_components
);
446 return spirv_builder_emit_load(&ctx
->builder
, type
, var
);
450 get_src_uint(struct ntv_context
*ctx
, nir_src
*src
)
453 return get_src_uint_ssa(ctx
, src
->ssa
);
455 return get_src_uint_reg(ctx
, &src
->reg
);
459 get_alu_src_uint(struct ntv_context
*ctx
, nir_alu_instr
*alu
, unsigned src
)
461 assert(!alu
->src
[src
].negate
);
462 assert(!alu
->src
[src
].abs
);
464 SpvId def
= get_src_uint(ctx
, &alu
->src
[src
].src
);
466 unsigned used_channels
= 0;
467 bool need_swizzle
= false;
468 for (unsigned i
= 0; i
< NIR_MAX_VEC_COMPONENTS
; i
++) {
469 if (!nir_alu_instr_channel_used(alu
, src
, i
))
474 if (alu
->src
[src
].swizzle
[i
] != i
)
477 assert(used_channels
!= 0);
479 unsigned live_channels
= nir_src_num_components(alu
->src
[src
].src
);
480 if (used_channels
!= live_channels
)
486 int bit_size
= nir_src_bit_size(alu
->src
[src
].src
);
488 SpvId uint_type
= spirv_builder_type_uint(&ctx
->builder
, bit_size
);
489 if (used_channels
== 1) {
490 uint32_t indices
[] = { alu
->src
[src
].swizzle
[0] };
491 return spirv_builder_emit_composite_extract(&ctx
->builder
, uint_type
,
493 ARRAY_SIZE(indices
));
494 } else if (live_channels
== 1) {
495 SpvId uvec_type
= spirv_builder_type_vector(&ctx
->builder
, uint_type
,
498 SpvId constituents
[NIR_MAX_VEC_COMPONENTS
];
499 for (unsigned i
= 0; i
< used_channels
; ++i
)
500 constituents
[i
] = def
;
502 return spirv_builder_emit_composite_construct(&ctx
->builder
, uvec_type
,
506 SpvId uvec_type
= spirv_builder_type_vector(&ctx
->builder
, uint_type
,
509 uint32_t components
[NIR_MAX_VEC_COMPONENTS
];
510 size_t num_components
= 0;
511 for (unsigned i
= 0; i
< NIR_MAX_VEC_COMPONENTS
; i
++) {
512 if (!nir_alu_instr_channel_used(alu
, src
, i
))
515 components
[num_components
++] = alu
->src
[src
].swizzle
[i
];
518 return spirv_builder_emit_vector_shuffle(&ctx
->builder
, uvec_type
,
519 def
, def
, components
, num_components
);
524 store_ssa_def_uint(struct ntv_context
*ctx
, nir_ssa_def
*ssa
, SpvId result
)
527 assert(ssa
->index
< ctx
->num_defs
);
528 ctx
->defs
[ssa
->index
] = result
;
532 bvec_to_uvec(struct ntv_context
*ctx
, SpvId value
, unsigned num_components
)
534 SpvId otype
= get_uvec_type(ctx
, 32, num_components
);
535 uint32_t zeros
[4] = { 0, 0, 0, 0 };
536 uint32_t ones
[4] = { 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff };
537 SpvId zero
= get_uvec_constant(ctx
, 32, num_components
, zeros
);
538 SpvId one
= get_uvec_constant(ctx
, 32, num_components
, ones
);
539 return emit_triop(ctx
, SpvOpSelect
, otype
, value
, one
, zero
);
543 uvec_to_bvec(struct ntv_context
*ctx
, SpvId value
, unsigned num_components
)
545 SpvId type
= get_bvec_type(ctx
, num_components
);
547 uint32_t zeros
[NIR_MAX_VEC_COMPONENTS
] = { 0 };
548 SpvId zero
= get_uvec_constant(ctx
, 32, num_components
, zeros
);
550 return emit_binop(ctx
, SpvOpINotEqual
, type
, value
, zero
);
554 bitcast_to_uvec(struct ntv_context
*ctx
, SpvId value
, unsigned bit_size
,
555 unsigned num_components
)
557 SpvId type
= get_uvec_type(ctx
, bit_size
, num_components
);
558 return emit_unop(ctx
, SpvOpBitcast
, type
, value
);
562 bitcast_to_ivec(struct ntv_context
*ctx
, SpvId value
, unsigned bit_size
,
563 unsigned num_components
)
565 SpvId type
= get_ivec_type(ctx
, bit_size
, num_components
);
566 return emit_unop(ctx
, SpvOpBitcast
, type
, value
);
570 bitcast_to_fvec(struct ntv_context
*ctx
, SpvId value
, unsigned bit_size
,
571 unsigned num_components
)
573 SpvId type
= get_fvec_type(ctx
, bit_size
, num_components
);
574 return emit_unop(ctx
, SpvOpBitcast
, type
, value
);
578 store_reg_def(struct ntv_context
*ctx
, nir_reg_dest
*reg
, SpvId result
)
580 SpvId var
= get_var_from_reg(ctx
, reg
->reg
);
582 spirv_builder_emit_store(&ctx
->builder
, var
, result
);
586 store_dest_uint(struct ntv_context
*ctx
, nir_dest
*dest
, SpvId result
)
589 store_ssa_def_uint(ctx
, &dest
->ssa
, result
);
591 store_reg_def(ctx
, &dest
->reg
, result
);
595 store_dest(struct ntv_context
*ctx
, nir_dest
*dest
, SpvId result
, nir_alu_type type
)
597 unsigned num_components
= nir_dest_num_components(*dest
);
598 unsigned bit_size
= nir_dest_bit_size(*dest
);
600 switch (nir_alu_type_get_base_type(type
)) {
602 assert(bit_size
== 1);
603 result
= bvec_to_uvec(ctx
, result
, num_components
);
607 break; /* nothing to do! */
611 result
= bitcast_to_uvec(ctx
, result
, bit_size
, num_components
);
615 unreachable("unsupported nir_alu_type");
618 store_dest_uint(ctx
, dest
, result
);
622 emit_unop(struct ntv_context
*ctx
, SpvOp op
, SpvId type
, SpvId src
)
624 return spirv_builder_emit_unop(&ctx
->builder
, op
, type
, src
);
628 emit_binop(struct ntv_context
*ctx
, SpvOp op
, SpvId type
,
629 SpvId src0
, SpvId src1
)
631 return spirv_builder_emit_binop(&ctx
->builder
, op
, type
, src0
, src1
);
635 emit_triop(struct ntv_context
*ctx
, SpvOp op
, SpvId type
,
636 SpvId src0
, SpvId src1
, SpvId src2
)
638 return spirv_builder_emit_triop(&ctx
->builder
, op
, type
, src0
, src1
, src2
);
642 emit_builtin_unop(struct ntv_context
*ctx
, enum GLSLstd450 op
, SpvId type
,
645 SpvId args
[] = { src
};
646 return spirv_builder_emit_ext_inst(&ctx
->builder
, type
, ctx
->GLSL_std_450
,
647 op
, args
, ARRAY_SIZE(args
));
651 emit_builtin_binop(struct ntv_context
*ctx
, enum GLSLstd450 op
, SpvId type
,
652 SpvId src0
, SpvId src1
)
654 SpvId args
[] = { src0
, src1
};
655 return spirv_builder_emit_ext_inst(&ctx
->builder
, type
, ctx
->GLSL_std_450
,
656 op
, args
, ARRAY_SIZE(args
));
660 get_fvec_constant(struct ntv_context
*ctx
, int bit_size
, int num_components
,
661 const float values
[])
663 assert(bit_size
== 32);
665 if (num_components
> 1) {
666 SpvId components
[num_components
];
667 for (int i
= 0; i
< num_components
; i
++)
668 components
[i
] = spirv_builder_const_float(&ctx
->builder
, bit_size
,
671 SpvId type
= get_fvec_type(ctx
, bit_size
, num_components
);
672 return spirv_builder_const_composite(&ctx
->builder
, type
, components
,
676 assert(num_components
== 1);
677 return spirv_builder_const_float(&ctx
->builder
, bit_size
, values
[0]);
681 get_uvec_constant(struct ntv_context
*ctx
, int bit_size
, int num_components
,
682 const uint32_t values
[])
684 assert(bit_size
== 32);
686 if (num_components
> 1) {
687 SpvId components
[num_components
];
688 for (int i
= 0; i
< num_components
; i
++)
689 components
[i
] = spirv_builder_const_uint(&ctx
->builder
, bit_size
,
692 SpvId type
= get_uvec_type(ctx
, bit_size
, num_components
);
693 return spirv_builder_const_composite(&ctx
->builder
, type
, components
,
697 assert(num_components
== 1);
698 return spirv_builder_const_uint(&ctx
->builder
, bit_size
, values
[0]);
701 static inline unsigned
702 alu_instr_src_components(const nir_alu_instr
*instr
, unsigned src
)
704 if (nir_op_infos
[instr
->op
].input_sizes
[src
] > 0)
705 return nir_op_infos
[instr
->op
].input_sizes
[src
];
707 if (instr
->dest
.dest
.is_ssa
)
708 return instr
->dest
.dest
.ssa
.num_components
;
710 return instr
->dest
.dest
.reg
.reg
->num_components
;
714 get_alu_src(struct ntv_context
*ctx
, nir_alu_instr
*alu
, unsigned src
)
716 SpvId uint_value
= get_alu_src_uint(ctx
, alu
, src
);
718 unsigned num_components
= alu_instr_src_components(alu
, src
);
719 unsigned bit_size
= nir_src_bit_size(alu
->src
[src
].src
);
720 nir_alu_type type
= nir_op_infos
[alu
->op
].input_types
[src
];
722 switch (nir_alu_type_get_base_type(type
)) {
724 assert(bit_size
== 1);
725 return uvec_to_bvec(ctx
, uint_value
, num_components
);
728 return bitcast_to_ivec(ctx
, uint_value
, bit_size
, num_components
);
734 return bitcast_to_fvec(ctx
, uint_value
, bit_size
, num_components
);
737 unreachable("unknown nir_alu_type");
742 store_alu_result(struct ntv_context
*ctx
, nir_alu_instr
*alu
, SpvId result
)
744 assert(!alu
->dest
.saturate
);
745 return store_dest(ctx
, &alu
->dest
.dest
, result
, nir_op_infos
[alu
->op
].output_type
);
749 get_dest_type(struct ntv_context
*ctx
, nir_dest
*dest
, nir_alu_type type
)
751 unsigned num_components
= nir_dest_num_components(*dest
);
752 unsigned bit_size
= nir_dest_bit_size(*dest
);
754 switch (nir_alu_type_get_base_type(type
)) {
756 return get_bvec_type(ctx
, num_components
);
759 return get_ivec_type(ctx
, bit_size
, num_components
);
762 return get_uvec_type(ctx
, bit_size
, num_components
);
765 return get_fvec_type(ctx
, bit_size
, num_components
);
768 unreachable("unsupported nir_alu_type");
773 emit_alu(struct ntv_context
*ctx
, nir_alu_instr
*alu
)
775 SpvId src
[nir_op_infos
[alu
->op
].num_inputs
];
776 for (unsigned i
= 0; i
< nir_op_infos
[alu
->op
].num_inputs
; i
++)
777 src
[i
] = get_alu_src(ctx
, alu
, i
);
779 SpvId dest_type
= get_dest_type(ctx
, &alu
->dest
.dest
,
780 nir_op_infos
[alu
->op
].output_type
);
781 unsigned bit_size
= nir_dest_bit_size(alu
->dest
.dest
);
782 unsigned num_components
= nir_dest_num_components(alu
->dest
.dest
);
787 assert(nir_op_infos
[alu
->op
].num_inputs
== 1);
791 #define UNOP(nir_op, spirv_op) \
793 assert(nir_op_infos[alu->op].num_inputs == 1); \
794 result = emit_unop(ctx, spirv_op, dest_type, src[0]); \
797 UNOP(nir_op_ineg
, SpvOpSNegate
)
798 UNOP(nir_op_fneg
, SpvOpFNegate
)
799 UNOP(nir_op_fddx
, SpvOpDPdx
)
800 UNOP(nir_op_fddy
, SpvOpDPdy
)
801 UNOP(nir_op_f2i32
, SpvOpConvertFToS
)
802 UNOP(nir_op_f2u32
, SpvOpConvertFToU
)
803 UNOP(nir_op_i2f32
, SpvOpConvertSToF
)
804 UNOP(nir_op_u2f32
, SpvOpConvertUToF
)
807 #define BUILTIN_UNOP(nir_op, spirv_op) \
809 assert(nir_op_infos[alu->op].num_inputs == 1); \
810 result = emit_builtin_unop(ctx, spirv_op, dest_type, src[0]); \
813 BUILTIN_UNOP(nir_op_fabs
, GLSLstd450FAbs
)
814 BUILTIN_UNOP(nir_op_fsqrt
, GLSLstd450Sqrt
)
815 BUILTIN_UNOP(nir_op_frsq
, GLSLstd450InverseSqrt
)
816 BUILTIN_UNOP(nir_op_flog2
, GLSLstd450Log2
)
817 BUILTIN_UNOP(nir_op_fexp2
, GLSLstd450Exp2
)
818 BUILTIN_UNOP(nir_op_ffract
, GLSLstd450Fract
)
819 BUILTIN_UNOP(nir_op_ffloor
, GLSLstd450Floor
)
820 BUILTIN_UNOP(nir_op_fceil
, GLSLstd450Ceil
)
821 BUILTIN_UNOP(nir_op_ftrunc
, GLSLstd450Trunc
)
822 BUILTIN_UNOP(nir_op_fround_even
, GLSLstd450RoundEven
)
823 BUILTIN_UNOP(nir_op_fsign
, GLSLstd450FSign
)
824 BUILTIN_UNOP(nir_op_fsin
, GLSLstd450Sin
)
825 BUILTIN_UNOP(nir_op_fcos
, GLSLstd450Cos
)
829 assert(nir_op_infos
[alu
->op
].num_inputs
== 1);
830 float one
[4] = { 1, 1, 1, 1 };
832 src
[0] = get_fvec_constant(ctx
, bit_size
, num_components
, one
);
833 result
= emit_binop(ctx
, SpvOpFDiv
, dest_type
, src
[0], src
[1]);
837 #define BINOP(nir_op, spirv_op) \
839 assert(nir_op_infos[alu->op].num_inputs == 2); \
840 result = emit_binop(ctx, spirv_op, dest_type, src[0], src[1]); \
843 BINOP(nir_op_iadd
, SpvOpIAdd
)
844 BINOP(nir_op_isub
, SpvOpISub
)
845 BINOP(nir_op_imul
, SpvOpIMul
)
846 BINOP(nir_op_idiv
, SpvOpSDiv
)
847 BINOP(nir_op_udiv
, SpvOpUDiv
)
848 BINOP(nir_op_fadd
, SpvOpFAdd
)
849 BINOP(nir_op_fsub
, SpvOpFSub
)
850 BINOP(nir_op_fmul
, SpvOpFMul
)
851 BINOP(nir_op_fdiv
, SpvOpFDiv
)
852 BINOP(nir_op_fmod
, SpvOpFMod
)
853 BINOP(nir_op_ilt
, SpvOpSLessThan
)
854 BINOP(nir_op_ige
, SpvOpSGreaterThanEqual
)
855 BINOP(nir_op_ieq
, SpvOpIEqual
)
856 BINOP(nir_op_ine
, SpvOpINotEqual
)
857 BINOP(nir_op_flt
, SpvOpFUnordLessThan
)
858 BINOP(nir_op_fge
, SpvOpFUnordGreaterThanEqual
)
859 BINOP(nir_op_feq
, SpvOpFOrdEqual
)
860 BINOP(nir_op_fne
, SpvOpFOrdNotEqual
)
861 BINOP(nir_op_ishl
, SpvOpShiftLeftLogical
)
862 BINOP(nir_op_ishr
, SpvOpShiftRightArithmetic
)
863 BINOP(nir_op_ushr
, SpvOpShiftRightLogical
)
866 #define BUILTIN_BINOP(nir_op, spirv_op) \
868 assert(nir_op_infos[alu->op].num_inputs == 2); \
869 result = emit_builtin_binop(ctx, spirv_op, dest_type, src[0], src[1]); \
872 BUILTIN_BINOP(nir_op_fmin
, GLSLstd450FMin
)
873 BUILTIN_BINOP(nir_op_fmax
, GLSLstd450FMax
)
879 assert(nir_op_infos
[alu
->op
].num_inputs
== 2);
880 result
= emit_binop(ctx
, SpvOpDot
, dest_type
, src
[0], src
[1]);
887 assert(nir_op_infos
[alu
->op
].num_inputs
== 2);
888 int num_components
= nir_dest_num_components(alu
->dest
.dest
);
889 SpvId bool_type
= get_bvec_type(ctx
, num_components
);
891 SpvId zero
= spirv_builder_const_float(&ctx
->builder
, 32, 0.0f
);
892 SpvId one
= spirv_builder_const_float(&ctx
->builder
, 32, 1.0f
);
893 if (num_components
> 1) {
894 SpvId zero_comps
[num_components
], one_comps
[num_components
];
895 for (int i
= 0; i
< num_components
; i
++) {
896 zero_comps
[i
] = zero
;
900 zero
= spirv_builder_const_composite(&ctx
->builder
, dest_type
,
901 zero_comps
, num_components
);
902 one
= spirv_builder_const_composite(&ctx
->builder
, dest_type
,
903 one_comps
, num_components
);
908 case nir_op_seq
: op
= SpvOpFOrdEqual
; break;
909 case nir_op_sne
: op
= SpvOpFOrdNotEqual
; break;
910 case nir_op_slt
: op
= SpvOpFOrdLessThan
; break;
911 case nir_op_sge
: op
= SpvOpFOrdGreaterThanEqual
; break;
912 default: unreachable("unexpected op");
915 result
= emit_binop(ctx
, op
, bool_type
, src
[0], src
[1]);
916 result
= emit_triop(ctx
, SpvOpSelect
, dest_type
, result
, one
, zero
);
921 assert(nir_op_infos
[alu
->op
].num_inputs
== 3);
922 int num_components
= nir_dest_num_components(alu
->dest
.dest
);
923 SpvId bool_type
= get_bvec_type(ctx
, num_components
);
925 float zero
[4] = { 0, 0, 0, 0 };
926 SpvId cmp
= get_fvec_constant(ctx
, nir_src_bit_size(alu
->src
[0].src
),
927 num_components
, zero
);
929 result
= emit_binop(ctx
, SpvOpFOrdGreaterThan
, bool_type
, src
[0], cmp
);
930 result
= emit_triop(ctx
, SpvOpSelect
, dest_type
, result
, src
[1], src
[2]);
937 int num_inputs
= nir_op_infos
[alu
->op
].num_inputs
;
938 assert(2 <= num_inputs
&& num_inputs
<= 4);
939 result
= spirv_builder_emit_composite_construct(&ctx
->builder
, dest_type
,
945 fprintf(stderr
, "emit_alu: not implemented (%s)\n",
946 nir_op_infos
[alu
->op
].name
);
948 unreachable("unsupported opcode");
952 store_alu_result(ctx
, alu
, result
);
956 emit_load_const(struct ntv_context
*ctx
, nir_load_const_instr
*load_const
)
958 uint32_t values
[NIR_MAX_VEC_COMPONENTS
];
959 for (int i
= 0; i
< load_const
->def
.num_components
; ++i
)
960 values
[i
] = load_const
->value
[i
].u32
;
962 SpvId constant
= get_uvec_constant(ctx
, load_const
->def
.bit_size
,
963 load_const
->def
.num_components
,
965 store_ssa_def_uint(ctx
, &load_const
->def
, constant
);
969 emit_load_ubo(struct ntv_context
*ctx
, nir_intrinsic_instr
*intr
)
971 nir_const_value
*const_block_index
= nir_src_as_const_value(intr
->src
[0]);
972 assert(const_block_index
); // no dynamic indexing for now
973 assert(const_block_index
->u32
== 0); // we only support the default UBO for now
975 nir_const_value
*const_offset
= nir_src_as_const_value(intr
->src
[1]);
977 SpvId uvec4_type
= get_uvec_type(ctx
, 32, 4);
978 SpvId pointer_type
= spirv_builder_type_pointer(&ctx
->builder
,
979 SpvStorageClassUniform
,
982 unsigned idx
= const_offset
->u32
;
983 SpvId member
= spirv_builder_const_uint(&ctx
->builder
, 32, 0);
984 SpvId offset
= spirv_builder_const_uint(&ctx
->builder
, 32, idx
);
985 SpvId offsets
[] = { member
, offset
};
986 SpvId ptr
= spirv_builder_emit_access_chain(&ctx
->builder
, pointer_type
,
987 ctx
->ubos
[0], offsets
,
988 ARRAY_SIZE(offsets
));
989 SpvId result
= spirv_builder_emit_load(&ctx
->builder
, uvec4_type
, ptr
);
991 SpvId type
= get_dest_uvec_type(ctx
, &intr
->dest
);
992 unsigned num_components
= nir_dest_num_components(intr
->dest
);
993 if (num_components
== 1) {
994 uint32_t components
[] = { 0 };
995 result
= spirv_builder_emit_composite_extract(&ctx
->builder
,
999 } else if (num_components
< 4) {
1000 SpvId constituents
[num_components
];
1001 SpvId uint_type
= spirv_builder_type_uint(&ctx
->builder
, 32);
1002 for (uint32_t i
= 0; i
< num_components
; ++i
)
1003 constituents
[i
] = spirv_builder_emit_composite_extract(&ctx
->builder
,
1008 result
= spirv_builder_emit_composite_construct(&ctx
->builder
,
1014 store_dest_uint(ctx
, &intr
->dest
, result
);
1016 unreachable("uniform-addressing not yet supported");
1020 emit_discard(struct ntv_context
*ctx
, nir_intrinsic_instr
*intr
)
1022 assert(ctx
->block_started
);
1023 spirv_builder_emit_kill(&ctx
->builder
);
1024 /* discard is weird in NIR, so let's just create an unreachable block after
1025 it and hope that the vulkan driver will DCE any instructinos in it. */
1026 spirv_builder_label(&ctx
->builder
, spirv_builder_new_id(&ctx
->builder
));
1030 emit_load_deref(struct ntv_context
*ctx
, nir_intrinsic_instr
*intr
)
1032 /* uint is a bit of a lie here; it's really just a pointer */
1033 SpvId ptr
= get_src_uint(ctx
, intr
->src
);
1035 nir_variable
*var
= nir_intrinsic_get_var(intr
, 0);
1036 SpvId result
= spirv_builder_emit_load(&ctx
->builder
,
1037 get_glsl_type(ctx
, var
->type
),
1039 unsigned num_components
= nir_dest_num_components(intr
->dest
);
1040 unsigned bit_size
= nir_dest_bit_size(intr
->dest
);
1041 result
= bitcast_to_uvec(ctx
, result
, bit_size
, num_components
);
1042 store_dest_uint(ctx
, &intr
->dest
, result
);
1046 emit_store_deref(struct ntv_context
*ctx
, nir_intrinsic_instr
*intr
)
1048 /* uint is a bit of a lie here; it's really just a pointer */
1049 SpvId ptr
= get_src_uint(ctx
, &intr
->src
[0]);
1050 SpvId src
= get_src_uint(ctx
, &intr
->src
[1]);
1052 nir_variable
*var
= nir_intrinsic_get_var(intr
, 0);
1053 SpvId result
= emit_unop(ctx
, SpvOpBitcast
,
1054 get_glsl_type(ctx
, glsl_without_array(var
->type
)),
1056 spirv_builder_emit_store(&ctx
->builder
, ptr
, result
);
1060 emit_intrinsic(struct ntv_context
*ctx
, nir_intrinsic_instr
*intr
)
1062 switch (intr
->intrinsic
) {
1063 case nir_intrinsic_load_ubo
:
1064 emit_load_ubo(ctx
, intr
);
1067 case nir_intrinsic_discard
:
1068 emit_discard(ctx
, intr
);
1071 case nir_intrinsic_load_deref
:
1072 emit_load_deref(ctx
, intr
);
1075 case nir_intrinsic_store_deref
:
1076 emit_store_deref(ctx
, intr
);
1080 fprintf(stderr
, "emit_intrinsic: not implemented (%s)\n",
1081 nir_intrinsic_infos
[intr
->intrinsic
].name
);
1082 unreachable("unsupported intrinsic");
1087 emit_undef(struct ntv_context
*ctx
, nir_ssa_undef_instr
*undef
)
1089 SpvId type
= get_uvec_type(ctx
, undef
->def
.bit_size
,
1090 undef
->def
.num_components
);
1092 store_ssa_def_uint(ctx
, &undef
->def
,
1093 spirv_builder_emit_undef(&ctx
->builder
, type
));
1097 get_src_float(struct ntv_context
*ctx
, nir_src
*src
)
1099 SpvId def
= get_src_uint(ctx
, src
);
1100 unsigned num_components
= nir_src_num_components(*src
);
1101 unsigned bit_size
= nir_src_bit_size(*src
);
1102 return bitcast_to_fvec(ctx
, def
, bit_size
, num_components
);
1106 emit_tex(struct ntv_context
*ctx
, nir_tex_instr
*tex
)
1108 assert(tex
->op
== nir_texop_tex
||
1109 tex
->op
== nir_texop_txb
);
1110 assert(nir_alu_type_get_base_type(tex
->dest_type
) == nir_type_float
);
1111 assert(tex
->texture_index
== tex
->sampler_index
);
1113 SpvId coord
= 0, proj
= 0, bias
= 0, lod
= 0;
1114 unsigned coord_components
;
1115 for (unsigned i
= 0; i
< tex
->num_srcs
; i
++) {
1116 switch (tex
->src
[i
].src_type
) {
1117 case nir_tex_src_coord
:
1118 coord
= get_src_float(ctx
, &tex
->src
[i
].src
);
1119 coord_components
= nir_src_num_components(tex
->src
[i
].src
);
1122 case nir_tex_src_projector
:
1123 assert(nir_src_num_components(tex
->src
[i
].src
) == 1);
1124 proj
= get_src_float(ctx
, &tex
->src
[i
].src
);
1128 case nir_tex_src_bias
:
1129 assert(tex
->op
== nir_texop_txb
);
1130 bias
= get_src_float(ctx
, &tex
->src
[i
].src
);
1134 case nir_tex_src_lod
:
1135 assert(nir_src_num_components(tex
->src
[i
].src
) == 1);
1136 lod
= get_src_float(ctx
, &tex
->src
[i
].src
);
1141 fprintf(stderr
, "texture source: %d\n", tex
->src
[i
].src_type
);
1142 unreachable("unknown texture source");
1146 if (lod
== 0 && ctx
->stage
!= MESA_SHADER_FRAGMENT
) {
1147 lod
= spirv_builder_const_float(&ctx
->builder
, 32, 0);
1152 SpvDim dimension
= type_to_dim(tex
->sampler_dim
, &is_ms
);
1153 SpvId float_type
= spirv_builder_type_float(&ctx
->builder
, 32);
1154 SpvId image_type
= spirv_builder_type_image(&ctx
->builder
, float_type
,
1155 dimension
, false, tex
->is_array
, is_ms
, 1,
1156 SpvImageFormatUnknown
);
1157 SpvId sampled_type
= spirv_builder_type_sampled_image(&ctx
->builder
,
1160 assert(tex
->texture_index
< ctx
->num_samplers
);
1161 SpvId load
= spirv_builder_emit_load(&ctx
->builder
, sampled_type
,
1162 ctx
->samplers
[tex
->texture_index
]);
1164 SpvId dest_type
= get_dest_type(ctx
, &tex
->dest
, tex
->dest_type
);
1167 SpvId constituents
[coord_components
+ 1];
1168 SpvId float_type
= spirv_builder_type_float(&ctx
->builder
, 32);
1169 for (uint32_t i
= 0; i
< coord_components
; ++i
)
1170 constituents
[i
] = spirv_builder_emit_composite_extract(&ctx
->builder
,
1175 constituents
[coord_components
++] = proj
;
1177 SpvId vec_type
= get_fvec_type(ctx
, 32, coord_components
);
1178 coord
= spirv_builder_emit_composite_construct(&ctx
->builder
,
1184 SpvId result
= spirv_builder_emit_image_sample(&ctx
->builder
,
1189 spirv_builder_emit_decoration(&ctx
->builder
, result
,
1190 SpvDecorationRelaxedPrecision
);
1192 store_dest(ctx
, &tex
->dest
, result
, tex
->dest_type
);
1196 start_block(struct ntv_context
*ctx
, SpvId label
)
1198 /* terminate previous block if needed */
1199 if (ctx
->block_started
)
1200 spirv_builder_emit_branch(&ctx
->builder
, label
);
1202 /* start new block */
1203 spirv_builder_label(&ctx
->builder
, label
);
1204 ctx
->block_started
= true;
1208 branch(struct ntv_context
*ctx
, SpvId label
)
1210 assert(ctx
->block_started
);
1211 spirv_builder_emit_branch(&ctx
->builder
, label
);
1212 ctx
->block_started
= false;
1216 branch_conditional(struct ntv_context
*ctx
, SpvId condition
, SpvId then_id
,
1219 assert(ctx
->block_started
);
1220 spirv_builder_emit_branch_conditional(&ctx
->builder
, condition
,
1222 ctx
->block_started
= false;
1226 emit_jump(struct ntv_context
*ctx
, nir_jump_instr
*jump
)
1228 switch (jump
->type
) {
1229 case nir_jump_break
:
1230 assert(ctx
->loop_break
);
1231 branch(ctx
, ctx
->loop_break
);
1234 case nir_jump_continue
:
1235 assert(ctx
->loop_cont
);
1236 branch(ctx
, ctx
->loop_cont
);
1240 unreachable("Unsupported jump type\n");
1245 emit_deref_var(struct ntv_context
*ctx
, nir_deref_instr
*deref
)
1247 assert(deref
->deref_type
== nir_deref_type_var
);
1249 struct hash_entry
*he
= _mesa_hash_table_search(ctx
->vars
, deref
->var
);
1251 SpvId result
= (SpvId
)(intptr_t)he
->data
;
1252 /* uint is a bit of a lie here, it's really just an opaque type */
1253 store_dest_uint(ctx
, &deref
->dest
, result
);
1257 emit_deref_array(struct ntv_context
*ctx
, nir_deref_instr
*deref
)
1259 assert(deref
->deref_type
== nir_deref_type_array
);
1260 nir_variable
*var
= nir_deref_instr_get_variable(deref
);
1262 SpvStorageClass storage_class
;
1263 switch (var
->data
.mode
) {
1264 case nir_var_shader_in
:
1265 storage_class
= SpvStorageClassInput
;
1268 case nir_var_shader_out
:
1269 storage_class
= SpvStorageClassOutput
;
1273 unreachable("Unsupported nir_variable_mode\n");
1276 SpvId index
= get_src_uint(ctx
, &deref
->arr
.index
);
1278 SpvId ptr_type
= spirv_builder_type_pointer(&ctx
->builder
,
1280 get_glsl_type(ctx
, deref
->type
));
1282 SpvId result
= spirv_builder_emit_access_chain(&ctx
->builder
,
1284 get_src_uint(ctx
, &deref
->parent
),
1286 /* uint is a bit of a lie here, it's really just an opaque type */
1287 store_dest_uint(ctx
, &deref
->dest
, result
);
1291 emit_deref(struct ntv_context
*ctx
, nir_deref_instr
*deref
)
1293 switch (deref
->deref_type
) {
1294 case nir_deref_type_var
:
1295 emit_deref_var(ctx
, deref
);
1298 case nir_deref_type_array
:
1299 emit_deref_array(ctx
, deref
);
1303 unreachable("unexpected deref_type");
1308 emit_block(struct ntv_context
*ctx
, struct nir_block
*block
)
1310 start_block(ctx
, block_label(ctx
, block
));
1311 nir_foreach_instr(instr
, block
) {
1312 switch (instr
->type
) {
1313 case nir_instr_type_alu
:
1314 emit_alu(ctx
, nir_instr_as_alu(instr
));
1316 case nir_instr_type_intrinsic
:
1317 emit_intrinsic(ctx
, nir_instr_as_intrinsic(instr
));
1319 case nir_instr_type_load_const
:
1320 emit_load_const(ctx
, nir_instr_as_load_const(instr
));
1322 case nir_instr_type_ssa_undef
:
1323 emit_undef(ctx
, nir_instr_as_ssa_undef(instr
));
1325 case nir_instr_type_tex
:
1326 emit_tex(ctx
, nir_instr_as_tex(instr
));
1328 case nir_instr_type_phi
:
1329 unreachable("nir_instr_type_phi not supported");
1331 case nir_instr_type_jump
:
1332 emit_jump(ctx
, nir_instr_as_jump(instr
));
1334 case nir_instr_type_call
:
1335 unreachable("nir_instr_type_call not supported");
1337 case nir_instr_type_parallel_copy
:
1338 unreachable("nir_instr_type_parallel_copy not supported");
1340 case nir_instr_type_deref
:
1341 emit_deref(ctx
, nir_instr_as_deref(instr
));
1348 emit_cf_list(struct ntv_context
*ctx
, struct exec_list
*list
);
1351 get_src_bool(struct ntv_context
*ctx
, nir_src
*src
)
1353 SpvId def
= get_src_uint(ctx
, src
);
1354 assert(nir_src_bit_size(*src
) == 32);
1355 unsigned num_components
= nir_src_num_components(*src
);
1356 return uvec_to_bvec(ctx
, def
, num_components
);
1360 emit_if(struct ntv_context
*ctx
, nir_if
*if_stmt
)
1362 SpvId condition
= get_src_bool(ctx
, &if_stmt
->condition
);
1364 SpvId header_id
= spirv_builder_new_id(&ctx
->builder
);
1365 SpvId then_id
= block_label(ctx
, nir_if_first_then_block(if_stmt
));
1366 SpvId endif_id
= spirv_builder_new_id(&ctx
->builder
);
1367 SpvId else_id
= endif_id
;
1369 bool has_else
= !exec_list_is_empty(&if_stmt
->else_list
);
1371 assert(nir_if_first_else_block(if_stmt
)->index
< ctx
->num_blocks
);
1372 else_id
= block_label(ctx
, nir_if_first_else_block(if_stmt
));
1375 /* create a header-block */
1376 start_block(ctx
, header_id
);
1377 spirv_builder_emit_selection_merge(&ctx
->builder
, endif_id
,
1378 SpvSelectionControlMaskNone
);
1379 branch_conditional(ctx
, condition
, then_id
, else_id
);
1381 emit_cf_list(ctx
, &if_stmt
->then_list
);
1384 if (ctx
->block_started
)
1385 branch(ctx
, endif_id
);
1387 emit_cf_list(ctx
, &if_stmt
->else_list
);
1390 start_block(ctx
, endif_id
);
1394 emit_loop(struct ntv_context
*ctx
, nir_loop
*loop
)
1396 SpvId header_id
= spirv_builder_new_id(&ctx
->builder
);
1397 SpvId begin_id
= block_label(ctx
, nir_loop_first_block(loop
));
1398 SpvId break_id
= spirv_builder_new_id(&ctx
->builder
);
1399 SpvId cont_id
= spirv_builder_new_id(&ctx
->builder
);
1401 /* create a header-block */
1402 start_block(ctx
, header_id
);
1403 spirv_builder_loop_merge(&ctx
->builder
, break_id
, cont_id
, SpvLoopControlMaskNone
);
1404 branch(ctx
, begin_id
);
1406 SpvId save_break
= ctx
->loop_break
;
1407 SpvId save_cont
= ctx
->loop_cont
;
1408 ctx
->loop_break
= break_id
;
1409 ctx
->loop_cont
= cont_id
;
1411 emit_cf_list(ctx
, &loop
->body
);
1413 ctx
->loop_break
= save_break
;
1414 ctx
->loop_cont
= save_cont
;
1416 branch(ctx
, cont_id
);
1417 start_block(ctx
, cont_id
);
1418 branch(ctx
, header_id
);
1420 start_block(ctx
, break_id
);
1424 emit_cf_list(struct ntv_context
*ctx
, struct exec_list
*list
)
1426 foreach_list_typed(nir_cf_node
, node
, node
, list
) {
1427 switch (node
->type
) {
1428 case nir_cf_node_block
:
1429 emit_block(ctx
, nir_cf_node_as_block(node
));
1432 case nir_cf_node_if
:
1433 emit_if(ctx
, nir_cf_node_as_if(node
));
1436 case nir_cf_node_loop
:
1437 emit_loop(ctx
, nir_cf_node_as_loop(node
));
1440 case nir_cf_node_function
:
1441 unreachable("nir_cf_node_function not supported");
1447 struct spirv_shader
*
1448 nir_to_spirv(struct nir_shader
*s
)
1450 struct spirv_shader
*ret
= NULL
;
1452 struct ntv_context ctx
= {};
1454 switch (s
->info
.stage
) {
1455 case MESA_SHADER_VERTEX
:
1456 case MESA_SHADER_FRAGMENT
:
1457 case MESA_SHADER_COMPUTE
:
1458 spirv_builder_emit_cap(&ctx
.builder
, SpvCapabilityShader
);
1461 case MESA_SHADER_TESS_CTRL
:
1462 case MESA_SHADER_TESS_EVAL
:
1463 spirv_builder_emit_cap(&ctx
.builder
, SpvCapabilityTessellation
);
1466 case MESA_SHADER_GEOMETRY
:
1467 spirv_builder_emit_cap(&ctx
.builder
, SpvCapabilityGeometry
);
1471 unreachable("invalid stage");
1474 ctx
.stage
= s
->info
.stage
;
1475 ctx
.GLSL_std_450
= spirv_builder_import(&ctx
.builder
, "GLSL.std.450");
1476 spirv_builder_emit_source(&ctx
.builder
, SpvSourceLanguageGLSL
, 450);
1478 spirv_builder_emit_mem_model(&ctx
.builder
, SpvAddressingModelLogical
,
1479 SpvMemoryModelGLSL450
);
1481 SpvExecutionModel exec_model
;
1482 switch (s
->info
.stage
) {
1483 case MESA_SHADER_VERTEX
:
1484 exec_model
= SpvExecutionModelVertex
;
1486 case MESA_SHADER_TESS_CTRL
:
1487 exec_model
= SpvExecutionModelTessellationControl
;
1489 case MESA_SHADER_TESS_EVAL
:
1490 exec_model
= SpvExecutionModelTessellationEvaluation
;
1492 case MESA_SHADER_GEOMETRY
:
1493 exec_model
= SpvExecutionModelGeometry
;
1495 case MESA_SHADER_FRAGMENT
:
1496 exec_model
= SpvExecutionModelFragment
;
1498 case MESA_SHADER_COMPUTE
:
1499 exec_model
= SpvExecutionModelGLCompute
;
1502 unreachable("invalid stage");
1505 SpvId type_void
= spirv_builder_type_void(&ctx
.builder
);
1506 SpvId type_main
= spirv_builder_type_function(&ctx
.builder
, type_void
,
1508 SpvId entry_point
= spirv_builder_new_id(&ctx
.builder
);
1509 spirv_builder_emit_name(&ctx
.builder
, entry_point
, "main");
1511 ctx
.vars
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
1512 _mesa_key_pointer_equal
);
1514 nir_foreach_variable(var
, &s
->inputs
)
1515 emit_input(&ctx
, var
);
1517 nir_foreach_variable(var
, &s
->outputs
)
1518 emit_output(&ctx
, var
);
1520 nir_foreach_variable(var
, &s
->uniforms
)
1521 emit_uniform(&ctx
, var
);
1523 spirv_builder_emit_entry_point(&ctx
.builder
, exec_model
, entry_point
,
1524 "main", ctx
.entry_ifaces
,
1525 ctx
.num_entry_ifaces
);
1526 if (s
->info
.stage
== MESA_SHADER_FRAGMENT
) {
1527 spirv_builder_emit_exec_mode(&ctx
.builder
, entry_point
,
1528 SpvExecutionModeOriginUpperLeft
);
1529 if (s
->info
.outputs_written
& BITFIELD64_BIT(FRAG_RESULT_DEPTH
))
1530 spirv_builder_emit_exec_mode(&ctx
.builder
, entry_point
,
1531 SpvExecutionModeDepthReplacing
);
1535 spirv_builder_function(&ctx
.builder
, entry_point
, type_void
,
1536 SpvFunctionControlMaskNone
,
1539 nir_function_impl
*entry
= nir_shader_get_entrypoint(s
);
1540 nir_metadata_require(entry
, nir_metadata_block_index
);
1542 ctx
.defs
= (SpvId
*)malloc(sizeof(SpvId
) * entry
->ssa_alloc
);
1545 ctx
.num_defs
= entry
->ssa_alloc
;
1547 nir_index_local_regs(entry
);
1548 ctx
.regs
= malloc(sizeof(SpvId
) * entry
->reg_alloc
);
1551 ctx
.num_regs
= entry
->reg_alloc
;
1553 SpvId
*block_ids
= (SpvId
*)malloc(sizeof(SpvId
) * entry
->num_blocks
);
1557 for (int i
= 0; i
< entry
->num_blocks
; ++i
)
1558 block_ids
[i
] = spirv_builder_new_id(&ctx
.builder
);
1560 ctx
.block_ids
= block_ids
;
1561 ctx
.num_blocks
= entry
->num_blocks
;
1563 /* emit a block only for the variable declarations */
1564 start_block(&ctx
, spirv_builder_new_id(&ctx
.builder
));
1565 foreach_list_typed(nir_register
, reg
, node
, &entry
->registers
) {
1566 SpvId type
= get_uvec_type(&ctx
, reg
->bit_size
, reg
->num_components
);
1567 SpvId pointer_type
= spirv_builder_type_pointer(&ctx
.builder
,
1568 SpvStorageClassFunction
,
1570 SpvId var
= spirv_builder_emit_var(&ctx
.builder
, pointer_type
,
1571 SpvStorageClassFunction
);
1573 ctx
.regs
[reg
->index
] = var
;
1576 emit_cf_list(&ctx
, &entry
->body
);
1580 spirv_builder_return(&ctx
.builder
); // doesn't belong here, but whatevz
1581 spirv_builder_function_end(&ctx
.builder
);
1583 size_t num_words
= spirv_builder_get_num_words(&ctx
.builder
);
1585 ret
= CALLOC_STRUCT(spirv_shader
);
1589 ret
->words
= MALLOC(sizeof(uint32_t) * num_words
);
1593 ret
->num_words
= spirv_builder_get_words(&ctx
.builder
, ret
->words
, num_words
);
1594 assert(ret
->num_words
== num_words
);
1601 spirv_shader_delete(ret
);
1604 _mesa_hash_table_destroy(ctx
.vars
, NULL
);
1610 spirv_shader_delete(struct spirv_shader
*s
)