2 * Copyright © 2015 Intel Corporation
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * 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 NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 * Jason Ekstrand (jason@jlekstrand.net)
28 #include "vtn_private.h"
29 #include "spirv_info.h"
31 static struct vtn_access_chain
*
32 vtn_access_chain_extend(struct vtn_builder
*b
, struct vtn_access_chain
*old
,
35 struct vtn_access_chain
*chain
;
37 unsigned new_len
= old
->length
+ new_ids
;
38 /* TODO: don't use rzalloc */
39 chain
= rzalloc_size(b
, sizeof(*chain
) + new_len
* sizeof(chain
->link
[0]));
41 chain
->var
= old
->var
;
42 chain
->length
= new_len
;
44 for (unsigned i
= 0; i
< old
->length
; i
++)
45 chain
->link
[i
] = old
->link
[i
];
51 vtn_access_link_as_ssa(struct vtn_builder
*b
, struct vtn_access_link link
,
55 if (link
.mode
== vtn_access_mode_literal
) {
56 return nir_imm_int(&b
->nb
, link
.id
* stride
);
57 } else if (stride
== 1) {
58 return vtn_ssa_value(b
, link
.id
)->def
;
60 return nir_imul(&b
->nb
, vtn_ssa_value(b
, link
.id
)->def
,
61 nir_imm_int(&b
->nb
, stride
));
65 static struct vtn_type
*
66 vtn_access_chain_tail_type(struct vtn_builder
*b
,
67 struct vtn_access_chain
*chain
)
69 struct vtn_type
*type
= chain
->var
->type
;
70 for (unsigned i
= 0; i
< chain
->length
; i
++) {
71 if (glsl_type_is_struct(type
->type
)) {
72 assert(chain
->link
[i
].mode
== vtn_access_mode_literal
);
73 type
= type
->members
[chain
->link
[i
].id
];
75 type
= type
->array_element
;
81 /* Crawls a chain of array derefs and rewrites the types so that the
82 * lengths stay the same but the terminal type is the one given by
83 * tail_type. This is useful for split structures.
86 rewrite_deref_types(nir_deref
*deref
, const struct glsl_type
*type
)
90 assert(deref
->child
->deref_type
== nir_deref_type_array
);
91 assert(glsl_type_is_array(deref
->type
));
92 rewrite_deref_types(deref
->child
, glsl_get_array_element(type
));
97 vtn_access_chain_to_deref(struct vtn_builder
*b
, struct vtn_access_chain
*chain
)
99 nir_deref_var
*deref_var
;
100 if (chain
->var
->var
) {
101 deref_var
= nir_deref_var_create(b
, chain
->var
->var
);
103 assert(chain
->var
->members
);
104 /* Create the deref_var manually. It will get filled out later. */
105 deref_var
= rzalloc(b
, nir_deref_var
);
106 deref_var
->deref
.deref_type
= nir_deref_type_var
;
109 struct vtn_type
*deref_type
= chain
->var
->type
;
110 nir_deref
*tail
= &deref_var
->deref
;
111 nir_variable
**members
= chain
->var
->members
;
113 for (unsigned i
= 0; i
< chain
->length
; i
++) {
114 enum glsl_base_type base_type
= glsl_get_base_type(deref_type
->type
);
118 case GLSL_TYPE_FLOAT
:
119 case GLSL_TYPE_DOUBLE
:
121 case GLSL_TYPE_ARRAY
: {
122 deref_type
= deref_type
->array_element
;
124 nir_deref_array
*deref_arr
= nir_deref_array_create(b
);
125 deref_arr
->deref
.type
= deref_type
->type
;
127 if (chain
->link
[i
].mode
== vtn_access_mode_literal
) {
128 deref_arr
->deref_array_type
= nir_deref_array_type_direct
;
129 deref_arr
->base_offset
= chain
->link
[i
].id
;
131 assert(chain
->link
[i
].mode
== vtn_access_mode_id
);
132 deref_arr
->deref_array_type
= nir_deref_array_type_indirect
;
133 deref_arr
->base_offset
= 0;
134 deref_arr
->indirect
=
135 nir_src_for_ssa(vtn_ssa_value(b
, chain
->link
[i
].id
)->def
);
137 tail
->child
= &deref_arr
->deref
;
142 case GLSL_TYPE_STRUCT
: {
143 assert(chain
->link
[i
].mode
== vtn_access_mode_literal
);
144 unsigned idx
= chain
->link
[i
].id
;
145 deref_type
= deref_type
->members
[idx
];
147 /* This is a pre-split structure. */
148 deref_var
->var
= members
[idx
];
149 rewrite_deref_types(&deref_var
->deref
, members
[idx
]->type
);
150 assert(tail
->type
== deref_type
->type
);
153 nir_deref_struct
*deref_struct
= nir_deref_struct_create(b
, idx
);
154 deref_struct
->deref
.type
= deref_type
->type
;
155 tail
->child
= &deref_struct
->deref
;
161 unreachable("Invalid type for deref");
165 assert(members
== NULL
);
170 _vtn_local_load_store(struct vtn_builder
*b
, bool load
, nir_deref_var
*deref
,
171 nir_deref
*tail
, struct vtn_ssa_value
*inout
)
173 /* The deref tail may contain a deref to select a component of a vector (in
174 * other words, it might not be an actual tail) so we have to save it away
175 * here since we overwrite it later.
177 nir_deref
*old_child
= tail
->child
;
179 if (glsl_type_is_vector_or_scalar(tail
->type
)) {
180 /* Terminate the deref chain in case there is one more link to pick
181 * off a component of the vector.
185 nir_intrinsic_op op
= load
? nir_intrinsic_load_var
:
186 nir_intrinsic_store_var
;
188 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(b
->shader
, op
);
189 intrin
->variables
[0] =
190 nir_deref_as_var(nir_copy_deref(intrin
, &deref
->deref
));
191 intrin
->num_components
= glsl_get_vector_elements(tail
->type
);
194 nir_ssa_dest_init(&intrin
->instr
, &intrin
->dest
,
195 intrin
->num_components
,
196 glsl_get_bit_size(tail
->type
),
198 inout
->def
= &intrin
->dest
.ssa
;
200 nir_intrinsic_set_write_mask(intrin
, (1 << intrin
->num_components
) - 1);
201 intrin
->src
[0] = nir_src_for_ssa(inout
->def
);
204 nir_builder_instr_insert(&b
->nb
, &intrin
->instr
);
205 } else if (glsl_get_base_type(tail
->type
) == GLSL_TYPE_ARRAY
||
206 glsl_type_is_matrix(tail
->type
)) {
207 unsigned elems
= glsl_get_length(tail
->type
);
208 nir_deref_array
*deref_arr
= nir_deref_array_create(b
);
209 deref_arr
->deref_array_type
= nir_deref_array_type_direct
;
210 deref_arr
->deref
.type
= glsl_get_array_element(tail
->type
);
211 tail
->child
= &deref_arr
->deref
;
212 for (unsigned i
= 0; i
< elems
; i
++) {
213 deref_arr
->base_offset
= i
;
214 _vtn_local_load_store(b
, load
, deref
, tail
->child
, inout
->elems
[i
]);
217 assert(glsl_get_base_type(tail
->type
) == GLSL_TYPE_STRUCT
);
218 unsigned elems
= glsl_get_length(tail
->type
);
219 nir_deref_struct
*deref_struct
= nir_deref_struct_create(b
, 0);
220 tail
->child
= &deref_struct
->deref
;
221 for (unsigned i
= 0; i
< elems
; i
++) {
222 deref_struct
->index
= i
;
223 deref_struct
->deref
.type
= glsl_get_struct_field(tail
->type
, i
);
224 _vtn_local_load_store(b
, load
, deref
, tail
->child
, inout
->elems
[i
]);
228 tail
->child
= old_child
;
232 vtn_nir_deref(struct vtn_builder
*b
, uint32_t id
)
234 struct vtn_access_chain
*chain
=
235 vtn_value(b
, id
, vtn_value_type_access_chain
)->access_chain
;
237 return vtn_access_chain_to_deref(b
, chain
);
241 * Gets the NIR-level deref tail, which may have as a child an array deref
242 * selecting which component due to OpAccessChain supporting per-component
243 * indexing in SPIR-V.
246 get_deref_tail(nir_deref_var
*deref
)
248 nir_deref
*cur
= &deref
->deref
;
249 while (!glsl_type_is_vector_or_scalar(cur
->type
) && cur
->child
)
255 struct vtn_ssa_value
*
256 vtn_local_load(struct vtn_builder
*b
, nir_deref_var
*src
)
258 nir_deref
*src_tail
= get_deref_tail(src
);
259 struct vtn_ssa_value
*val
= vtn_create_ssa_value(b
, src_tail
->type
);
260 _vtn_local_load_store(b
, true, src
, src_tail
, val
);
262 if (src_tail
->child
) {
263 nir_deref_array
*vec_deref
= nir_deref_as_array(src_tail
->child
);
264 assert(vec_deref
->deref
.child
== NULL
);
265 val
->type
= vec_deref
->deref
.type
;
266 if (vec_deref
->deref_array_type
== nir_deref_array_type_direct
)
267 val
->def
= vtn_vector_extract(b
, val
->def
, vec_deref
->base_offset
);
269 val
->def
= vtn_vector_extract_dynamic(b
, val
->def
,
270 vec_deref
->indirect
.ssa
);
277 vtn_local_store(struct vtn_builder
*b
, struct vtn_ssa_value
*src
,
280 nir_deref
*dest_tail
= get_deref_tail(dest
);
282 if (dest_tail
->child
) {
283 struct vtn_ssa_value
*val
= vtn_create_ssa_value(b
, dest_tail
->type
);
284 _vtn_local_load_store(b
, true, dest
, dest_tail
, val
);
285 nir_deref_array
*deref
= nir_deref_as_array(dest_tail
->child
);
286 assert(deref
->deref
.child
== NULL
);
287 if (deref
->deref_array_type
== nir_deref_array_type_direct
)
288 val
->def
= vtn_vector_insert(b
, val
->def
, src
->def
,
291 val
->def
= vtn_vector_insert_dynamic(b
, val
->def
, src
->def
,
292 deref
->indirect
.ssa
);
293 _vtn_local_load_store(b
, false, dest
, dest_tail
, val
);
295 _vtn_local_load_store(b
, false, dest
, dest_tail
, src
);
300 get_vulkan_resource_index(struct vtn_builder
*b
, struct vtn_access_chain
*chain
,
301 struct vtn_type
**type
, unsigned *chain_idx
)
303 /* Push constants have no explicit binding */
304 if (chain
->var
->mode
== vtn_variable_mode_push_constant
) {
306 *type
= chain
->var
->type
;
310 nir_ssa_def
*array_index
;
311 if (glsl_type_is_array(chain
->var
->type
->type
)) {
312 assert(chain
->length
> 0);
313 array_index
= vtn_access_link_as_ssa(b
, chain
->link
[0], 1);
315 *type
= chain
->var
->type
->array_element
;
317 array_index
= nir_imm_int(&b
->nb
, 0);
319 *type
= chain
->var
->type
;
322 nir_intrinsic_instr
*instr
=
323 nir_intrinsic_instr_create(b
->nb
.shader
,
324 nir_intrinsic_vulkan_resource_index
);
325 instr
->src
[0] = nir_src_for_ssa(array_index
);
326 nir_intrinsic_set_desc_set(instr
, chain
->var
->descriptor_set
);
327 nir_intrinsic_set_binding(instr
, chain
->var
->binding
);
329 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
330 nir_builder_instr_insert(&b
->nb
, &instr
->instr
);
332 return &instr
->dest
.ssa
;
336 vtn_access_chain_to_offset(struct vtn_builder
*b
,
337 struct vtn_access_chain
*chain
,
338 nir_ssa_def
**index_out
, struct vtn_type
**type_out
,
339 unsigned *end_idx_out
, bool stop_at_matrix
)
342 struct vtn_type
*type
;
343 *index_out
= get_vulkan_resource_index(b
, chain
, &type
, &idx
);
345 nir_ssa_def
*offset
= nir_imm_int(&b
->nb
, 0);
346 for (; idx
< chain
->length
; idx
++) {
347 enum glsl_base_type base_type
= glsl_get_base_type(type
->type
);
351 case GLSL_TYPE_FLOAT
:
352 case GLSL_TYPE_DOUBLE
:
354 /* Some users may not want matrix or vector derefs */
359 case GLSL_TYPE_ARRAY
:
360 offset
= nir_iadd(&b
->nb
, offset
,
361 vtn_access_link_as_ssa(b
, chain
->link
[idx
],
364 type
= type
->array_element
;
367 case GLSL_TYPE_STRUCT
: {
368 assert(chain
->link
[idx
].mode
== vtn_access_mode_literal
);
369 unsigned member
= chain
->link
[idx
].id
;
370 offset
= nir_iadd(&b
->nb
, offset
,
371 nir_imm_int(&b
->nb
, type
->offsets
[member
]));
372 type
= type
->members
[member
];
377 unreachable("Invalid type for deref");
390 _vtn_load_store_tail(struct vtn_builder
*b
, nir_intrinsic_op op
, bool load
,
391 nir_ssa_def
*index
, nir_ssa_def
*offset
,
392 struct vtn_ssa_value
**inout
, const struct glsl_type
*type
)
394 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(b
->nb
.shader
, op
);
395 instr
->num_components
= glsl_get_vector_elements(type
);
399 nir_intrinsic_set_write_mask(instr
, (1 << instr
->num_components
) - 1);
400 instr
->src
[src
++] = nir_src_for_ssa((*inout
)->def
);
403 /* We set the base and size for push constant load to the entire push
404 * constant block for now.
406 if (op
== nir_intrinsic_load_push_constant
) {
407 nir_intrinsic_set_base(instr
, 0);
408 nir_intrinsic_set_range(instr
, 128);
412 instr
->src
[src
++] = nir_src_for_ssa(index
);
414 instr
->src
[src
++] = nir_src_for_ssa(offset
);
417 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
418 instr
->num_components
,
419 glsl_get_bit_size(type
), NULL
);
420 (*inout
)->def
= &instr
->dest
.ssa
;
423 nir_builder_instr_insert(&b
->nb
, &instr
->instr
);
425 if (load
&& glsl_get_base_type(type
) == GLSL_TYPE_BOOL
)
426 (*inout
)->def
= nir_ine(&b
->nb
, (*inout
)->def
, nir_imm_int(&b
->nb
, 0));
430 _vtn_block_load_store(struct vtn_builder
*b
, nir_intrinsic_op op
, bool load
,
431 nir_ssa_def
*index
, nir_ssa_def
*offset
,
432 struct vtn_access_chain
*chain
, unsigned chain_idx
,
433 struct vtn_type
*type
, struct vtn_ssa_value
**inout
)
435 if (chain
&& chain_idx
>= chain
->length
)
438 if (load
&& chain
== NULL
&& *inout
== NULL
)
439 *inout
= vtn_create_ssa_value(b
, type
->type
);
441 enum glsl_base_type base_type
= glsl_get_base_type(type
->type
);
445 case GLSL_TYPE_FLOAT
:
447 /* This is where things get interesting. At this point, we've hit
448 * a vector, a scalar, or a matrix.
450 if (glsl_type_is_matrix(type
->type
)) {
452 /* Loading the whole matrix */
453 struct vtn_ssa_value
*transpose
;
454 unsigned num_ops
, vec_width
;
455 if (type
->row_major
) {
456 num_ops
= glsl_get_vector_elements(type
->type
);
457 vec_width
= glsl_get_matrix_columns(type
->type
);
459 const struct glsl_type
*transpose_type
=
460 glsl_matrix_type(base_type
, vec_width
, num_ops
);
461 *inout
= vtn_create_ssa_value(b
, transpose_type
);
463 transpose
= vtn_ssa_transpose(b
, *inout
);
467 num_ops
= glsl_get_matrix_columns(type
->type
);
468 vec_width
= glsl_get_vector_elements(type
->type
);
471 for (unsigned i
= 0; i
< num_ops
; i
++) {
472 nir_ssa_def
*elem_offset
=
473 nir_iadd(&b
->nb
, offset
,
474 nir_imm_int(&b
->nb
, i
* type
->stride
));
475 _vtn_load_store_tail(b
, op
, load
, index
, elem_offset
,
477 glsl_vector_type(base_type
, vec_width
));
480 if (load
&& type
->row_major
)
481 *inout
= vtn_ssa_transpose(b
, *inout
);
482 } else if (type
->row_major
) {
483 /* Row-major but with an access chiain. */
484 nir_ssa_def
*col_offset
=
485 vtn_access_link_as_ssa(b
, chain
->link
[chain_idx
],
486 type
->array_element
->stride
);
487 offset
= nir_iadd(&b
->nb
, offset
, col_offset
);
489 if (chain_idx
+ 1 < chain
->length
) {
490 /* Picking off a single element */
491 nir_ssa_def
*row_offset
=
492 vtn_access_link_as_ssa(b
, chain
->link
[chain_idx
+ 1],
494 offset
= nir_iadd(&b
->nb
, offset
, row_offset
);
496 *inout
= vtn_create_ssa_value(b
, glsl_scalar_type(base_type
));
497 _vtn_load_store_tail(b
, op
, load
, index
, offset
, inout
,
498 glsl_scalar_type(base_type
));
500 /* Grabbing a column; picking one element off each row */
501 unsigned num_comps
= glsl_get_vector_elements(type
->type
);
502 const struct glsl_type
*column_type
=
503 glsl_get_column_type(type
->type
);
505 nir_ssa_def
*comps
[4];
506 for (unsigned i
= 0; i
< num_comps
; i
++) {
507 nir_ssa_def
*elem_offset
=
508 nir_iadd(&b
->nb
, offset
,
509 nir_imm_int(&b
->nb
, i
* type
->stride
));
511 struct vtn_ssa_value
*comp
, temp_val
;
513 temp_val
.def
= nir_channel(&b
->nb
, (*inout
)->def
, i
);
514 temp_val
.type
= glsl_scalar_type(base_type
);
517 _vtn_load_store_tail(b
, op
, load
, index
, elem_offset
,
518 &comp
, glsl_scalar_type(base_type
));
519 comps
[i
] = comp
->def
;
524 *inout
= vtn_create_ssa_value(b
, column_type
);
526 (*inout
)->def
= nir_vec(&b
->nb
, comps
, num_comps
);
530 /* Column-major with a deref. Fall through to array case. */
531 nir_ssa_def
*col_offset
=
532 vtn_access_link_as_ssa(b
, chain
->link
[chain_idx
], type
->stride
);
533 offset
= nir_iadd(&b
->nb
, offset
, col_offset
);
535 _vtn_block_load_store(b
, op
, load
, index
, offset
,
536 chain
, chain_idx
+ 1,
537 type
->array_element
, inout
);
539 } else if (chain
== NULL
) {
540 /* Single whole vector */
541 assert(glsl_type_is_vector_or_scalar(type
->type
));
542 _vtn_load_store_tail(b
, op
, load
, index
, offset
, inout
, type
->type
);
544 /* Single component of a vector. Fall through to array case. */
545 nir_ssa_def
*elem_offset
=
546 vtn_access_link_as_ssa(b
, chain
->link
[chain_idx
], type
->stride
);
547 offset
= nir_iadd(&b
->nb
, offset
, elem_offset
);
549 _vtn_block_load_store(b
, op
, load
, index
, offset
, NULL
, 0,
550 type
->array_element
, inout
);
554 case GLSL_TYPE_ARRAY
: {
555 unsigned elems
= glsl_get_length(type
->type
);
556 for (unsigned i
= 0; i
< elems
; i
++) {
557 nir_ssa_def
*elem_off
=
558 nir_iadd(&b
->nb
, offset
, nir_imm_int(&b
->nb
, i
* type
->stride
));
559 _vtn_block_load_store(b
, op
, load
, index
, elem_off
, NULL
, 0,
560 type
->array_element
, &(*inout
)->elems
[i
]);
565 case GLSL_TYPE_STRUCT
: {
566 unsigned elems
= glsl_get_length(type
->type
);
567 for (unsigned i
= 0; i
< elems
; i
++) {
568 nir_ssa_def
*elem_off
=
569 nir_iadd(&b
->nb
, offset
, nir_imm_int(&b
->nb
, type
->offsets
[i
]));
570 _vtn_block_load_store(b
, op
, load
, index
, elem_off
, NULL
, 0,
571 type
->members
[i
], &(*inout
)->elems
[i
]);
577 unreachable("Invalid block member type");
581 static struct vtn_ssa_value
*
582 vtn_block_load(struct vtn_builder
*b
, struct vtn_access_chain
*src
)
585 switch (src
->var
->mode
) {
586 case vtn_variable_mode_ubo
:
587 op
= nir_intrinsic_load_ubo
;
589 case vtn_variable_mode_ssbo
:
590 op
= nir_intrinsic_load_ssbo
;
592 case vtn_variable_mode_push_constant
:
593 op
= nir_intrinsic_load_push_constant
;
596 assert(!"Invalid block variable mode");
599 nir_ssa_def
*offset
, *index
= NULL
;
600 struct vtn_type
*type
;
602 offset
= vtn_access_chain_to_offset(b
, src
, &index
, &type
, &chain_idx
, true);
604 struct vtn_ssa_value
*value
= NULL
;
605 _vtn_block_load_store(b
, op
, true, index
, offset
,
606 src
, chain_idx
, type
, &value
);
611 vtn_block_store(struct vtn_builder
*b
, struct vtn_ssa_value
*src
,
612 struct vtn_access_chain
*dst
)
614 nir_ssa_def
*offset
, *index
= NULL
;
615 struct vtn_type
*type
;
617 offset
= vtn_access_chain_to_offset(b
, dst
, &index
, &type
, &chain_idx
, true);
619 _vtn_block_load_store(b
, nir_intrinsic_store_ssbo
, false, index
, offset
,
620 dst
, chain_idx
, type
, &src
);
624 vtn_variable_is_external_block(struct vtn_variable
*var
)
626 return var
->mode
== vtn_variable_mode_ssbo
||
627 var
->mode
== vtn_variable_mode_ubo
||
628 var
->mode
== vtn_variable_mode_push_constant
;
632 _vtn_variable_load_store(struct vtn_builder
*b
, bool load
,
633 struct vtn_access_chain
*chain
,
634 struct vtn_type
*tail_type
,
635 struct vtn_ssa_value
**inout
)
637 enum glsl_base_type base_type
= glsl_get_base_type(tail_type
->type
);
641 case GLSL_TYPE_FLOAT
:
643 /* At this point, we have a scalar, vector, or matrix so we know that
644 * there cannot be any structure splitting still in the way. By
645 * stopping at the matrix level rather than the vector level, we
646 * ensure that matrices get loaded in the optimal way even if they
647 * are storred row-major in a UBO.
650 *inout
= vtn_local_load(b
, vtn_access_chain_to_deref(b
, chain
));
652 vtn_local_store(b
, *inout
, vtn_access_chain_to_deref(b
, chain
));
656 case GLSL_TYPE_ARRAY
:
657 case GLSL_TYPE_STRUCT
: {
658 struct vtn_access_chain
*new_chain
=
659 vtn_access_chain_extend(b
, chain
, 1);
660 new_chain
->link
[chain
->length
].mode
= vtn_access_mode_literal
;
661 unsigned elems
= glsl_get_length(tail_type
->type
);
663 assert(*inout
== NULL
);
664 *inout
= rzalloc(b
, struct vtn_ssa_value
);
665 (*inout
)->type
= tail_type
->type
;
666 (*inout
)->elems
= rzalloc_array(b
, struct vtn_ssa_value
*, elems
);
668 for (unsigned i
= 0; i
< elems
; i
++) {
669 new_chain
->link
[chain
->length
].id
= i
;
670 struct vtn_type
*elem_type
= base_type
== GLSL_TYPE_ARRAY
?
671 tail_type
->array_element
: tail_type
->members
[i
];
672 _vtn_variable_load_store(b
, load
, new_chain
, elem_type
,
673 &(*inout
)->elems
[i
]);
679 unreachable("Invalid access chain type");
683 struct vtn_ssa_value
*
684 vtn_variable_load(struct vtn_builder
*b
, struct vtn_access_chain
*src
)
686 if (vtn_variable_is_external_block(src
->var
)) {
687 return vtn_block_load(b
, src
);
689 struct vtn_type
*tail_type
= vtn_access_chain_tail_type(b
, src
);
690 struct vtn_ssa_value
*val
= NULL
;
691 _vtn_variable_load_store(b
, true, src
, tail_type
, &val
);
697 vtn_variable_store(struct vtn_builder
*b
, struct vtn_ssa_value
*src
,
698 struct vtn_access_chain
*dest
)
700 if (vtn_variable_is_external_block(dest
->var
)) {
701 assert(dest
->var
->mode
== vtn_variable_mode_ssbo
);
702 vtn_block_store(b
, src
, dest
);
704 struct vtn_type
*tail_type
= vtn_access_chain_tail_type(b
, dest
);
705 _vtn_variable_load_store(b
, false, dest
, tail_type
, &src
);
710 _vtn_variable_copy(struct vtn_builder
*b
, struct vtn_access_chain
*dest
,
711 struct vtn_access_chain
*src
, struct vtn_type
*tail_type
)
713 enum glsl_base_type base_type
= glsl_get_base_type(tail_type
->type
);
717 case GLSL_TYPE_FLOAT
:
719 /* At this point, we have a scalar, vector, or matrix so we know that
720 * there cannot be any structure splitting still in the way. By
721 * stopping at the matrix level rather than the vector level, we
722 * ensure that matrices get loaded in the optimal way even if they
723 * are storred row-major in a UBO.
725 vtn_variable_store(b
, vtn_variable_load(b
, src
), dest
);
728 case GLSL_TYPE_ARRAY
:
729 case GLSL_TYPE_STRUCT
: {
730 struct vtn_access_chain
*new_src
, *new_dest
;
731 new_src
= vtn_access_chain_extend(b
, src
, 1);
732 new_dest
= vtn_access_chain_extend(b
, dest
, 1);
733 new_src
->link
[src
->length
].mode
= vtn_access_mode_literal
;
734 new_dest
->link
[dest
->length
].mode
= vtn_access_mode_literal
;
735 unsigned elems
= glsl_get_length(tail_type
->type
);
736 for (unsigned i
= 0; i
< elems
; i
++) {
737 new_src
->link
[src
->length
].id
= i
;
738 new_dest
->link
[dest
->length
].id
= i
;
739 struct vtn_type
*elem_type
= base_type
== GLSL_TYPE_ARRAY
?
740 tail_type
->array_element
: tail_type
->members
[i
];
741 _vtn_variable_copy(b
, new_dest
, new_src
, elem_type
);
747 unreachable("Invalid access chain type");
752 vtn_variable_copy(struct vtn_builder
*b
, struct vtn_access_chain
*dest
,
753 struct vtn_access_chain
*src
)
755 struct vtn_type
*tail_type
= vtn_access_chain_tail_type(b
, src
);
756 assert(vtn_access_chain_tail_type(b
, dest
)->type
== tail_type
->type
);
758 /* TODO: At some point, we should add a special-case for when we can
759 * just emit a copy_var intrinsic.
761 _vtn_variable_copy(b
, dest
, src
, tail_type
);
765 set_mode_system_value(nir_variable_mode
*mode
)
767 assert(*mode
== nir_var_system_value
|| *mode
== nir_var_shader_in
);
768 *mode
= nir_var_system_value
;
772 vtn_get_builtin_location(struct vtn_builder
*b
,
773 SpvBuiltIn builtin
, int *location
,
774 nir_variable_mode
*mode
)
777 case SpvBuiltInPosition
:
778 *location
= VARYING_SLOT_POS
;
780 case SpvBuiltInPointSize
:
781 *location
= VARYING_SLOT_PSIZ
;
783 case SpvBuiltInClipDistance
:
784 *location
= VARYING_SLOT_CLIP_DIST0
; /* XXX CLIP_DIST1? */
786 case SpvBuiltInCullDistance
:
787 *location
= VARYING_SLOT_CULL_DIST0
;
789 case SpvBuiltInVertexIndex
:
790 *location
= SYSTEM_VALUE_VERTEX_ID
;
791 set_mode_system_value(mode
);
793 case SpvBuiltInVertexId
:
794 /* Vulkan defines VertexID to be zero-based and reserves the new
795 * builtin keyword VertexIndex to indicate the non-zero-based value.
797 *location
= SYSTEM_VALUE_VERTEX_ID_ZERO_BASE
;
798 set_mode_system_value(mode
);
800 case SpvBuiltInInstanceIndex
:
801 *location
= SYSTEM_VALUE_INSTANCE_INDEX
;
802 set_mode_system_value(mode
);
804 case SpvBuiltInInstanceId
:
805 *location
= SYSTEM_VALUE_INSTANCE_ID
;
806 set_mode_system_value(mode
);
808 case SpvBuiltInPrimitiveId
:
809 if (*mode
== nir_var_shader_out
) {
810 *location
= VARYING_SLOT_PRIMITIVE_ID
;
812 *location
= SYSTEM_VALUE_PRIMITIVE_ID
;
813 set_mode_system_value(mode
);
816 case SpvBuiltInInvocationId
:
817 *location
= SYSTEM_VALUE_INVOCATION_ID
;
818 set_mode_system_value(mode
);
820 case SpvBuiltInLayer
:
821 *location
= VARYING_SLOT_LAYER
;
822 *mode
= nir_var_shader_out
;
824 case SpvBuiltInViewportIndex
:
825 *location
= VARYING_SLOT_VIEWPORT
;
826 if (b
->shader
->stage
== MESA_SHADER_GEOMETRY
)
827 *mode
= nir_var_shader_out
;
828 else if (b
->shader
->stage
== MESA_SHADER_FRAGMENT
)
829 *mode
= nir_var_shader_in
;
831 unreachable("invalid stage for SpvBuiltInViewportIndex");
833 case SpvBuiltInTessLevelOuter
:
834 case SpvBuiltInTessLevelInner
:
835 case SpvBuiltInTessCoord
:
836 case SpvBuiltInPatchVertices
:
837 unreachable("no tessellation support");
838 case SpvBuiltInFragCoord
:
839 *location
= VARYING_SLOT_POS
;
840 assert(*mode
== nir_var_shader_in
);
842 case SpvBuiltInPointCoord
:
843 *location
= VARYING_SLOT_PNTC
;
844 assert(*mode
== nir_var_shader_in
);
846 case SpvBuiltInFrontFacing
:
847 *location
= SYSTEM_VALUE_FRONT_FACE
;
848 set_mode_system_value(mode
);
850 case SpvBuiltInSampleId
:
851 *location
= SYSTEM_VALUE_SAMPLE_ID
;
852 set_mode_system_value(mode
);
854 case SpvBuiltInSamplePosition
:
855 *location
= SYSTEM_VALUE_SAMPLE_POS
;
856 set_mode_system_value(mode
);
858 case SpvBuiltInSampleMask
:
859 *location
= SYSTEM_VALUE_SAMPLE_MASK_IN
; /* XXX out? */
860 set_mode_system_value(mode
);
862 case SpvBuiltInFragDepth
:
863 *location
= FRAG_RESULT_DEPTH
;
864 assert(*mode
== nir_var_shader_out
);
866 case SpvBuiltInNumWorkgroups
:
867 *location
= SYSTEM_VALUE_NUM_WORK_GROUPS
;
868 set_mode_system_value(mode
);
870 case SpvBuiltInWorkgroupSize
:
871 /* This should already be handled */
872 unreachable("unsupported builtin");
874 case SpvBuiltInWorkgroupId
:
875 *location
= SYSTEM_VALUE_WORK_GROUP_ID
;
876 set_mode_system_value(mode
);
878 case SpvBuiltInLocalInvocationId
:
879 *location
= SYSTEM_VALUE_LOCAL_INVOCATION_ID
;
880 set_mode_system_value(mode
);
882 case SpvBuiltInLocalInvocationIndex
:
883 *location
= SYSTEM_VALUE_LOCAL_INVOCATION_INDEX
;
884 set_mode_system_value(mode
);
886 case SpvBuiltInGlobalInvocationId
:
887 *location
= SYSTEM_VALUE_GLOBAL_INVOCATION_ID
;
888 set_mode_system_value(mode
);
890 case SpvBuiltInHelperInvocation
:
892 unreachable("unsupported builtin");
897 apply_var_decoration(struct vtn_builder
*b
, nir_variable
*nir_var
,
898 const struct vtn_decoration
*dec
)
900 switch (dec
->decoration
) {
901 case SpvDecorationRelaxedPrecision
:
902 break; /* FIXME: Do nothing with this for now. */
903 case SpvDecorationNoPerspective
:
904 nir_var
->data
.interpolation
= INTERP_MODE_NOPERSPECTIVE
;
906 case SpvDecorationFlat
:
907 nir_var
->data
.interpolation
= INTERP_MODE_FLAT
;
909 case SpvDecorationCentroid
:
910 nir_var
->data
.centroid
= true;
912 case SpvDecorationSample
:
913 nir_var
->data
.sample
= true;
915 case SpvDecorationInvariant
:
916 nir_var
->data
.invariant
= true;
918 case SpvDecorationConstant
:
919 assert(nir_var
->constant_initializer
!= NULL
);
920 nir_var
->data
.read_only
= true;
922 case SpvDecorationNonWritable
:
923 nir_var
->data
.read_only
= true;
925 case SpvDecorationComponent
:
926 nir_var
->data
.location_frac
= dec
->literals
[0];
928 case SpvDecorationIndex
:
929 nir_var
->data
.explicit_index
= true;
930 nir_var
->data
.index
= dec
->literals
[0];
932 case SpvDecorationBuiltIn
: {
933 SpvBuiltIn builtin
= dec
->literals
[0];
935 if (builtin
== SpvBuiltInWorkgroupSize
) {
936 /* This shouldn't be a builtin. It's actually a constant. */
937 nir_var
->data
.mode
= nir_var_global
;
938 nir_var
->data
.read_only
= true;
940 nir_constant
*c
= rzalloc(nir_var
, nir_constant
);
941 c
->values
[0].u32
[0] = b
->shader
->info
->cs
.local_size
[0];
942 c
->values
[0].u32
[1] = b
->shader
->info
->cs
.local_size
[1];
943 c
->values
[0].u32
[2] = b
->shader
->info
->cs
.local_size
[2];
944 nir_var
->constant_initializer
= c
;
948 nir_variable_mode mode
= nir_var
->data
.mode
;
949 vtn_get_builtin_location(b
, builtin
, &nir_var
->data
.location
, &mode
);
950 nir_var
->data
.explicit_location
= true;
951 nir_var
->data
.mode
= mode
;
953 if (builtin
== SpvBuiltInFragCoord
|| builtin
== SpvBuiltInSamplePosition
)
954 nir_var
->data
.origin_upper_left
= b
->origin_upper_left
;
956 if (builtin
== SpvBuiltInFragCoord
)
957 nir_var
->data
.pixel_center_integer
= b
->pixel_center_integer
;
961 case SpvDecorationSpecId
:
962 case SpvDecorationRowMajor
:
963 case SpvDecorationColMajor
:
964 case SpvDecorationMatrixStride
:
965 case SpvDecorationRestrict
:
966 case SpvDecorationAliased
:
967 case SpvDecorationVolatile
:
968 case SpvDecorationCoherent
:
969 case SpvDecorationNonReadable
:
970 case SpvDecorationUniform
:
971 case SpvDecorationStream
:
972 case SpvDecorationOffset
:
973 case SpvDecorationLinkageAttributes
:
974 break; /* Do nothing with these here */
976 case SpvDecorationPatch
:
977 vtn_warn("Tessellation not yet supported");
980 case SpvDecorationLocation
:
981 unreachable("Handled above");
983 case SpvDecorationBlock
:
984 case SpvDecorationBufferBlock
:
985 case SpvDecorationArrayStride
:
986 case SpvDecorationGLSLShared
:
987 case SpvDecorationGLSLPacked
:
988 break; /* These can apply to a type but we don't care about them */
990 case SpvDecorationBinding
:
991 case SpvDecorationDescriptorSet
:
992 case SpvDecorationNoContraction
:
993 case SpvDecorationInputAttachmentIndex
:
994 vtn_warn("Decoration not allowed for variable or structure member: %s",
995 spirv_decoration_to_string(dec
->decoration
));
998 case SpvDecorationXfbBuffer
:
999 case SpvDecorationXfbStride
:
1000 vtn_warn("Vulkan does not have transform feedback: %s",
1001 spirv_decoration_to_string(dec
->decoration
));
1004 case SpvDecorationCPacked
:
1005 case SpvDecorationSaturatedConversion
:
1006 case SpvDecorationFuncParamAttr
:
1007 case SpvDecorationFPRoundingMode
:
1008 case SpvDecorationFPFastMathMode
:
1009 case SpvDecorationAlignment
:
1010 vtn_warn("Decoraiton only allowed for CL-style kernels: %s",
1011 spirv_decoration_to_string(dec
->decoration
));
1017 var_decoration_cb(struct vtn_builder
*b
, struct vtn_value
*val
, int member
,
1018 const struct vtn_decoration
*dec
, void *void_var
)
1020 struct vtn_variable
*vtn_var
= void_var
;
1022 /* Handle decorations that apply to a vtn_variable as a whole */
1023 switch (dec
->decoration
) {
1024 case SpvDecorationBinding
:
1025 vtn_var
->binding
= dec
->literals
[0];
1027 case SpvDecorationDescriptorSet
:
1028 vtn_var
->descriptor_set
= dec
->literals
[0];
1030 case SpvDecorationInputAttachmentIndex
:
1031 vtn_var
->input_attachment_index
= dec
->literals
[0];
1037 if (val
->value_type
== vtn_value_type_access_chain
) {
1038 assert(val
->access_chain
->length
== 0);
1039 assert(val
->access_chain
->var
== void_var
);
1040 assert(member
== -1);
1042 assert(val
->value_type
== vtn_value_type_type
);
1045 /* Location is odd. If applied to a split structure, we have to walk the
1046 * whole thing and accumulate the location. It's easier to handle as a
1049 if (dec
->decoration
== SpvDecorationLocation
) {
1050 unsigned location
= dec
->literals
[0];
1051 bool is_vertex_input
;
1052 if (b
->shader
->stage
== MESA_SHADER_FRAGMENT
&&
1053 vtn_var
->mode
== vtn_variable_mode_output
) {
1054 is_vertex_input
= false;
1055 location
+= FRAG_RESULT_DATA0
;
1056 } else if (b
->shader
->stage
== MESA_SHADER_VERTEX
&&
1057 vtn_var
->mode
== vtn_variable_mode_input
) {
1058 is_vertex_input
= true;
1059 location
+= VERT_ATTRIB_GENERIC0
;
1060 } else if (vtn_var
->mode
== vtn_variable_mode_input
||
1061 vtn_var
->mode
== vtn_variable_mode_output
) {
1062 is_vertex_input
= false;
1063 location
+= VARYING_SLOT_VAR0
;
1065 unreachable("Location must be on input or output variable");
1069 /* This handles the member and lone variable cases */
1070 vtn_var
->var
->data
.location
= location
;
1071 vtn_var
->var
->data
.explicit_location
= true;
1073 /* This handles the structure member case */
1074 assert(vtn_var
->members
);
1076 glsl_get_length(glsl_without_array(vtn_var
->type
->type
));
1077 for (unsigned i
= 0; i
< length
; i
++) {
1078 vtn_var
->members
[i
]->data
.location
= location
;
1079 vtn_var
->members
[i
]->data
.explicit_location
= true;
1081 glsl_count_attribute_slots(vtn_var
->members
[i
]->interface_type
,
1088 assert(member
<= 0);
1089 apply_var_decoration(b
, vtn_var
->var
, dec
);
1090 } else if (vtn_var
->members
) {
1092 assert(vtn_var
->members
);
1093 apply_var_decoration(b
, vtn_var
->members
[member
], dec
);
1096 glsl_get_length(glsl_without_array(vtn_var
->type
->type
));
1097 for (unsigned i
= 0; i
< length
; i
++)
1098 apply_var_decoration(b
, vtn_var
->members
[i
], dec
);
1101 /* A few variables, those with external storage, have no actual
1102 * nir_variables associated with them. Fortunately, all decorations
1103 * we care about for those variables are on the type only.
1105 assert(vtn_var
->mode
== vtn_variable_mode_ubo
||
1106 vtn_var
->mode
== vtn_variable_mode_ssbo
||
1107 vtn_var
->mode
== vtn_variable_mode_push_constant
);
1112 /* Tries to compute the size of an interface block based on the strides and
1113 * offsets that are provided to us in the SPIR-V source.
1116 vtn_type_block_size(struct vtn_type
*type
)
1118 enum glsl_base_type base_type
= glsl_get_base_type(type
->type
);
1119 switch (base_type
) {
1120 case GLSL_TYPE_UINT
:
1122 case GLSL_TYPE_FLOAT
:
1123 case GLSL_TYPE_BOOL
:
1124 case GLSL_TYPE_DOUBLE
: {
1125 unsigned cols
= type
->row_major
? glsl_get_vector_elements(type
->type
) :
1126 glsl_get_matrix_columns(type
->type
);
1128 assert(type
->stride
> 0);
1129 return type
->stride
* cols
;
1130 } else if (base_type
== GLSL_TYPE_DOUBLE
) {
1131 return glsl_get_vector_elements(type
->type
) * 8;
1133 return glsl_get_vector_elements(type
->type
) * 4;
1137 case GLSL_TYPE_STRUCT
:
1138 case GLSL_TYPE_INTERFACE
: {
1140 unsigned num_fields
= glsl_get_length(type
->type
);
1141 for (unsigned f
= 0; f
< num_fields
; f
++) {
1142 unsigned field_end
= type
->offsets
[f
] +
1143 vtn_type_block_size(type
->members
[f
]);
1144 size
= MAX2(size
, field_end
);
1149 case GLSL_TYPE_ARRAY
:
1150 assert(type
->stride
> 0);
1151 assert(glsl_get_length(type
->type
) > 0);
1152 return type
->stride
* glsl_get_length(type
->type
);
1155 assert(!"Invalid block type");
1161 vtn_handle_variables(struct vtn_builder
*b
, SpvOp opcode
,
1162 const uint32_t *w
, unsigned count
)
1165 case SpvOpVariable
: {
1166 struct vtn_variable
*var
= rzalloc(b
, struct vtn_variable
);
1167 var
->type
= vtn_value(b
, w
[1], vtn_value_type_type
)->type
;
1169 var
->chain
.var
= var
;
1170 var
->chain
.length
= 0;
1172 struct vtn_value
*val
=
1173 vtn_push_value(b
, w
[2], vtn_value_type_access_chain
);
1174 val
->access_chain
= &var
->chain
;
1176 struct vtn_type
*without_array
= var
->type
;
1177 while(glsl_type_is_array(without_array
->type
))
1178 without_array
= without_array
->array_element
;
1180 nir_variable_mode nir_mode
;
1181 switch ((SpvStorageClass
)w
[3]) {
1182 case SpvStorageClassUniform
:
1183 case SpvStorageClassUniformConstant
:
1184 if (without_array
->block
) {
1185 var
->mode
= vtn_variable_mode_ubo
;
1186 b
->shader
->info
->num_ubos
++;
1187 } else if (without_array
->buffer_block
) {
1188 var
->mode
= vtn_variable_mode_ssbo
;
1189 b
->shader
->info
->num_ssbos
++;
1190 } else if (glsl_type_is_image(without_array
->type
)) {
1191 var
->mode
= vtn_variable_mode_image
;
1192 nir_mode
= nir_var_uniform
;
1193 b
->shader
->info
->num_images
++;
1194 } else if (glsl_type_is_sampler(without_array
->type
)) {
1195 var
->mode
= vtn_variable_mode_sampler
;
1196 nir_mode
= nir_var_uniform
;
1197 b
->shader
->info
->num_textures
++;
1199 assert(!"Invalid uniform variable type");
1202 case SpvStorageClassPushConstant
:
1203 var
->mode
= vtn_variable_mode_push_constant
;
1204 assert(b
->shader
->num_uniforms
== 0);
1205 b
->shader
->num_uniforms
= vtn_type_block_size(var
->type
);
1207 case SpvStorageClassInput
:
1208 var
->mode
= vtn_variable_mode_input
;
1209 nir_mode
= nir_var_shader_in
;
1211 case SpvStorageClassOutput
:
1212 var
->mode
= vtn_variable_mode_output
;
1213 nir_mode
= nir_var_shader_out
;
1215 case SpvStorageClassPrivate
:
1216 var
->mode
= vtn_variable_mode_global
;
1217 nir_mode
= nir_var_global
;
1219 case SpvStorageClassFunction
:
1220 var
->mode
= vtn_variable_mode_local
;
1221 nir_mode
= nir_var_local
;
1223 case SpvStorageClassWorkgroup
:
1224 var
->mode
= vtn_variable_mode_workgroup
;
1225 nir_mode
= nir_var_shared
;
1227 case SpvStorageClassCrossWorkgroup
:
1228 case SpvStorageClassGeneric
:
1229 case SpvStorageClassAtomicCounter
:
1231 unreachable("Unhandled variable storage class");
1234 switch (var
->mode
) {
1235 case vtn_variable_mode_local
:
1236 case vtn_variable_mode_global
:
1237 case vtn_variable_mode_image
:
1238 case vtn_variable_mode_sampler
:
1239 case vtn_variable_mode_workgroup
:
1240 /* For these, we create the variable normally */
1241 var
->var
= rzalloc(b
->shader
, nir_variable
);
1242 var
->var
->name
= ralloc_strdup(var
->var
, val
->name
);
1243 var
->var
->type
= var
->type
->type
;
1244 var
->var
->data
.mode
= nir_mode
;
1246 switch (var
->mode
) {
1247 case vtn_variable_mode_image
:
1248 case vtn_variable_mode_sampler
:
1249 var
->var
->interface_type
= without_array
->type
;
1252 var
->var
->interface_type
= NULL
;
1257 case vtn_variable_mode_input
:
1258 case vtn_variable_mode_output
: {
1259 /* For inputs and outputs, we immediately split structures. This
1260 * is for a couple of reasons. For one, builtins may all come in
1261 * a struct and we really want those split out into separate
1262 * variables. For another, interpolation qualifiers can be
1263 * applied to members of the top-level struct ane we need to be
1264 * able to preserve that information.
1267 int array_length
= -1;
1268 struct vtn_type
*interface_type
= var
->type
;
1269 if (b
->shader
->stage
== MESA_SHADER_GEOMETRY
&&
1270 glsl_type_is_array(var
->type
->type
)) {
1271 /* In Geometry shaders (and some tessellation), inputs come
1272 * in per-vertex arrays. However, some builtins come in
1273 * non-per-vertex, hence the need for the is_array check. In
1274 * any case, there are no non-builtin arrays allowed so this
1275 * check should be sufficient.
1277 interface_type
= var
->type
->array_element
;
1278 array_length
= glsl_get_length(var
->type
->type
);
1281 if (glsl_type_is_struct(interface_type
->type
)) {
1282 /* It's a struct. Split it. */
1283 unsigned num_members
= glsl_get_length(interface_type
->type
);
1284 var
->members
= ralloc_array(b
, nir_variable
*, num_members
);
1286 for (unsigned i
= 0; i
< num_members
; i
++) {
1287 const struct glsl_type
*mtype
= interface_type
->members
[i
]->type
;
1288 if (array_length
>= 0)
1289 mtype
= glsl_array_type(mtype
, array_length
);
1291 var
->members
[i
] = rzalloc(b
->shader
, nir_variable
);
1292 var
->members
[i
]->name
=
1293 ralloc_asprintf(var
->members
[i
], "%s.%d", val
->name
, i
);
1294 var
->members
[i
]->type
= mtype
;
1295 var
->members
[i
]->interface_type
=
1296 interface_type
->members
[i
]->type
;
1297 var
->members
[i
]->data
.mode
= nir_mode
;
1300 var
->var
= rzalloc(b
->shader
, nir_variable
);
1301 var
->var
->name
= ralloc_strdup(var
->var
, val
->name
);
1302 var
->var
->type
= var
->type
->type
;
1303 var
->var
->interface_type
= interface_type
->type
;
1304 var
->var
->data
.mode
= nir_mode
;
1307 /* For inputs and outputs, we need to grab locations and builtin
1308 * information from the interface type.
1310 vtn_foreach_decoration(b
, interface_type
->val
, var_decoration_cb
, var
);
1313 case vtn_variable_mode_param
:
1314 unreachable("Not created through OpVariable");
1317 case vtn_variable_mode_ubo
:
1318 case vtn_variable_mode_ssbo
:
1319 case vtn_variable_mode_push_constant
:
1320 /* These don't need actual variables. */
1326 nir_constant
*constant
=
1327 vtn_value(b
, w
[4], vtn_value_type_constant
)->constant
;
1328 var
->var
->constant_initializer
=
1329 nir_constant_clone(constant
, var
->var
);
1332 vtn_foreach_decoration(b
, val
, var_decoration_cb
, var
);
1334 if (var
->mode
== vtn_variable_mode_image
||
1335 var
->mode
== vtn_variable_mode_sampler
) {
1336 /* XXX: We still need the binding information in the nir_variable
1337 * for these. We should fix that.
1339 var
->var
->data
.binding
= var
->binding
;
1340 var
->var
->data
.descriptor_set
= var
->descriptor_set
;
1341 var
->var
->data
.index
= var
->input_attachment_index
;
1343 if (var
->mode
== vtn_variable_mode_image
)
1344 var
->var
->data
.image
.format
= without_array
->image_format
;
1347 if (var
->mode
== vtn_variable_mode_local
) {
1348 assert(var
->members
== NULL
&& var
->var
!= NULL
);
1349 nir_function_impl_add_variable(b
->impl
, var
->var
);
1350 } else if (var
->var
) {
1351 nir_shader_add_variable(b
->shader
, var
->var
);
1352 } else if (var
->members
) {
1353 unsigned count
= glsl_get_length(without_array
->type
);
1354 for (unsigned i
= 0; i
< count
; i
++) {
1355 assert(var
->members
[i
]->data
.mode
!= nir_var_local
);
1356 nir_shader_add_variable(b
->shader
, var
->members
[i
]);
1359 assert(var
->mode
== vtn_variable_mode_ubo
||
1360 var
->mode
== vtn_variable_mode_ssbo
||
1361 var
->mode
== vtn_variable_mode_push_constant
);
1366 case SpvOpAccessChain
:
1367 case SpvOpInBoundsAccessChain
: {
1368 struct vtn_access_chain
*base
, *chain
;
1369 struct vtn_value
*base_val
= vtn_untyped_value(b
, w
[3]);
1370 if (base_val
->value_type
== vtn_value_type_sampled_image
) {
1371 /* This is rather insane. SPIR-V allows you to use OpSampledImage
1372 * to combine an array of images with a single sampler to get an
1373 * array of sampled images that all share the same sampler.
1374 * Fortunately, this means that we can more-or-less ignore the
1375 * sampler when crawling the access chain, but it does leave us
1376 * with this rather awkward little special-case.
1378 base
= base_val
->sampled_image
->image
;
1380 assert(base_val
->value_type
== vtn_value_type_access_chain
);
1381 base
= base_val
->access_chain
;
1384 chain
= vtn_access_chain_extend(b
, base
, count
- 4);
1386 unsigned idx
= base
->length
;
1387 for (int i
= 4; i
< count
; i
++) {
1388 struct vtn_value
*link_val
= vtn_untyped_value(b
, w
[i
]);
1389 if (link_val
->value_type
== vtn_value_type_constant
) {
1390 chain
->link
[idx
].mode
= vtn_access_mode_literal
;
1391 chain
->link
[idx
].id
= link_val
->constant
->values
[0].u32
[0];
1393 chain
->link
[idx
].mode
= vtn_access_mode_id
;
1394 chain
->link
[idx
].id
= w
[i
];
1399 if (base_val
->value_type
== vtn_value_type_sampled_image
) {
1400 struct vtn_value
*val
=
1401 vtn_push_value(b
, w
[2], vtn_value_type_sampled_image
);
1402 val
->sampled_image
= ralloc(b
, struct vtn_sampled_image
);
1403 val
->sampled_image
->image
= chain
;
1404 val
->sampled_image
->sampler
= base_val
->sampled_image
->sampler
;
1406 struct vtn_value
*val
=
1407 vtn_push_value(b
, w
[2], vtn_value_type_access_chain
);
1408 val
->access_chain
= chain
;
1413 case SpvOpCopyMemory
: {
1414 struct vtn_value
*dest
= vtn_value(b
, w
[1], vtn_value_type_access_chain
);
1415 struct vtn_value
*src
= vtn_value(b
, w
[2], vtn_value_type_access_chain
);
1417 vtn_variable_copy(b
, dest
->access_chain
, src
->access_chain
);
1422 struct vtn_access_chain
*src
=
1423 vtn_value(b
, w
[3], vtn_value_type_access_chain
)->access_chain
;
1425 if (src
->var
->mode
== vtn_variable_mode_image
||
1426 src
->var
->mode
== vtn_variable_mode_sampler
) {
1427 vtn_push_value(b
, w
[2], vtn_value_type_access_chain
)->access_chain
= src
;
1431 struct vtn_value
*val
= vtn_push_value(b
, w
[2], vtn_value_type_ssa
);
1432 val
->ssa
= vtn_variable_load(b
, src
);
1437 struct vtn_access_chain
*dest
=
1438 vtn_value(b
, w
[1], vtn_value_type_access_chain
)->access_chain
;
1439 struct vtn_ssa_value
*src
= vtn_ssa_value(b
, w
[2]);
1440 vtn_variable_store(b
, src
, dest
);
1444 case SpvOpArrayLength
: {
1445 struct vtn_access_chain
*chain
=
1446 vtn_value(b
, w
[3], vtn_value_type_access_chain
)->access_chain
;
1448 const uint32_t offset
= chain
->var
->type
->offsets
[w
[4]];
1449 const uint32_t stride
= chain
->var
->type
->members
[w
[4]]->stride
;
1452 struct vtn_type
*type
;
1453 nir_ssa_def
*index
=
1454 get_vulkan_resource_index(b
, chain
, &type
, &chain_idx
);
1456 nir_intrinsic_instr
*instr
=
1457 nir_intrinsic_instr_create(b
->nb
.shader
,
1458 nir_intrinsic_get_buffer_size
);
1459 instr
->src
[0] = nir_src_for_ssa(index
);
1460 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
1461 nir_builder_instr_insert(&b
->nb
, &instr
->instr
);
1462 nir_ssa_def
*buf_size
= &instr
->dest
.ssa
;
1464 /* array_length = max(buffer_size - offset, 0) / stride */
1465 nir_ssa_def
*array_length
=
1470 nir_imm_int(&b
->nb
, offset
)),
1471 nir_imm_int(&b
->nb
, 0u)),
1472 nir_imm_int(&b
->nb
, stride
));
1474 struct vtn_value
*val
= vtn_push_value(b
, w
[2], vtn_value_type_ssa
);
1475 val
->ssa
= vtn_create_ssa_value(b
, glsl_uint_type());
1476 val
->ssa
->def
= array_length
;
1480 case SpvOpCopyMemorySized
:
1482 unreachable("Unhandled opcode");