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"
30 #include "nir_deref.h"
32 static struct vtn_access_chain
*
33 vtn_access_chain_create(struct vtn_builder
*b
, unsigned length
)
35 struct vtn_access_chain
*chain
;
37 /* Subtract 1 from the length since there's already one built in */
38 size_t size
= sizeof(*chain
) +
39 (MAX2(length
, 1) - 1) * sizeof(chain
->link
[0]);
40 chain
= rzalloc_size(b
, size
);
41 chain
->length
= length
;
47 vtn_pointer_uses_ssa_offset(struct vtn_builder
*b
,
48 struct vtn_pointer
*ptr
)
50 return ptr
->mode
== vtn_variable_mode_ubo
||
51 ptr
->mode
== vtn_variable_mode_ssbo
||
52 ptr
->mode
== vtn_variable_mode_push_constant
||
53 (ptr
->mode
== vtn_variable_mode_workgroup
&&
54 b
->options
->lower_workgroup_access_to_offsets
);
58 vtn_pointer_is_external_block(struct vtn_builder
*b
,
59 struct vtn_pointer
*ptr
)
61 return ptr
->mode
== vtn_variable_mode_ssbo
||
62 ptr
->mode
== vtn_variable_mode_ubo
||
63 ptr
->mode
== vtn_variable_mode_push_constant
||
64 (ptr
->mode
== vtn_variable_mode_workgroup
&&
65 b
->options
->lower_workgroup_access_to_offsets
);
69 vtn_access_link_as_ssa(struct vtn_builder
*b
, struct vtn_access_link link
,
70 unsigned stride
, unsigned bit_size
)
72 vtn_assert(stride
> 0);
73 if (link
.mode
== vtn_access_mode_literal
) {
74 return nir_imm_intN_t(&b
->nb
, link
.id
* stride
, bit_size
);
76 nir_ssa_def
*ssa
= vtn_ssa_value(b
, link
.id
)->def
;
77 if (ssa
->bit_size
!= bit_size
)
78 ssa
= nir_i2i(&b
->nb
, ssa
, bit_size
);
80 ssa
= nir_imul_imm(&b
->nb
, ssa
, stride
);
85 /* Dereference the given base pointer by the access chain */
86 static struct vtn_pointer
*
87 vtn_nir_deref_pointer_dereference(struct vtn_builder
*b
,
88 struct vtn_pointer
*base
,
89 struct vtn_access_chain
*deref_chain
)
91 struct vtn_type
*type
= base
->type
;
92 enum gl_access_qualifier access
= base
->access
;
94 nir_deref_instr
*tail
;
98 assert(base
->var
&& base
->var
->var
);
99 tail
= nir_build_deref_var(&b
->nb
, base
->var
->var
);
102 /* OpPtrAccessChain is only allowed on things which support variable
103 * pointers. For everything else, the client is expected to just pass us
104 * the right access chain.
106 vtn_assert(!deref_chain
->ptr_as_array
);
108 for (unsigned i
= 0; i
< deref_chain
->length
; i
++) {
109 if (glsl_type_is_struct(type
->type
)) {
110 vtn_assert(deref_chain
->link
[i
].mode
== vtn_access_mode_literal
);
111 unsigned idx
= deref_chain
->link
[i
].id
;
112 tail
= nir_build_deref_struct(&b
->nb
, tail
, idx
);
113 type
= type
->members
[idx
];
115 nir_ssa_def
*index
= vtn_access_link_as_ssa(b
, deref_chain
->link
[i
], 1,
116 tail
->dest
.ssa
.bit_size
);
117 tail
= nir_build_deref_array(&b
->nb
, tail
, index
);
118 type
= type
->array_element
;
121 access
|= type
->access
;
124 struct vtn_pointer
*ptr
= rzalloc(b
, struct vtn_pointer
);
125 ptr
->mode
= base
->mode
;
127 ptr
->var
= base
->var
;
129 ptr
->access
= access
;
135 vtn_variable_resource_index(struct vtn_builder
*b
, struct vtn_variable
*var
,
136 nir_ssa_def
*desc_array_index
)
138 if (!desc_array_index
) {
139 vtn_assert(glsl_type_is_struct(var
->type
->type
));
140 desc_array_index
= nir_imm_int(&b
->nb
, 0);
143 nir_intrinsic_instr
*instr
=
144 nir_intrinsic_instr_create(b
->nb
.shader
,
145 nir_intrinsic_vulkan_resource_index
);
146 instr
->src
[0] = nir_src_for_ssa(desc_array_index
);
147 nir_intrinsic_set_desc_set(instr
, var
->descriptor_set
);
148 nir_intrinsic_set_binding(instr
, var
->binding
);
150 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
151 nir_builder_instr_insert(&b
->nb
, &instr
->instr
);
153 return &instr
->dest
.ssa
;
157 vtn_resource_reindex(struct vtn_builder
*b
, nir_ssa_def
*base_index
,
158 nir_ssa_def
*offset_index
)
160 nir_intrinsic_instr
*instr
=
161 nir_intrinsic_instr_create(b
->nb
.shader
,
162 nir_intrinsic_vulkan_resource_reindex
);
163 instr
->src
[0] = nir_src_for_ssa(base_index
);
164 instr
->src
[1] = nir_src_for_ssa(offset_index
);
166 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
167 nir_builder_instr_insert(&b
->nb
, &instr
->instr
);
169 return &instr
->dest
.ssa
;
172 static struct vtn_pointer
*
173 vtn_ssa_offset_pointer_dereference(struct vtn_builder
*b
,
174 struct vtn_pointer
*base
,
175 struct vtn_access_chain
*deref_chain
)
177 nir_ssa_def
*block_index
= base
->block_index
;
178 nir_ssa_def
*offset
= base
->offset
;
179 struct vtn_type
*type
= base
->type
;
180 enum gl_access_qualifier access
= base
->access
;
183 if (base
->mode
== vtn_variable_mode_ubo
||
184 base
->mode
== vtn_variable_mode_ssbo
) {
186 vtn_assert(base
->var
&& base
->type
);
187 nir_ssa_def
*desc_arr_idx
;
188 if (glsl_type_is_array(type
->type
)) {
189 if (deref_chain
->length
>= 1) {
191 vtn_access_link_as_ssa(b
, deref_chain
->link
[0], 1, 32);
193 /* This consumes a level of type */
194 type
= type
->array_element
;
195 access
|= type
->access
;
197 /* This is annoying. We've been asked for a pointer to the
198 * array of UBOs/SSBOs and not a specifc buffer. Return a
199 * pointer with a descriptor index of 0 and we'll have to do
200 * a reindex later to adjust it to the right thing.
202 desc_arr_idx
= nir_imm_int(&b
->nb
, 0);
204 } else if (deref_chain
->ptr_as_array
) {
205 /* You can't have a zero-length OpPtrAccessChain */
206 vtn_assert(deref_chain
->length
>= 1);
207 desc_arr_idx
= vtn_access_link_as_ssa(b
, deref_chain
->link
[0], 1, 32);
209 /* We have a regular non-array SSBO. */
212 block_index
= vtn_variable_resource_index(b
, base
->var
, desc_arr_idx
);
213 } else if (deref_chain
->ptr_as_array
&&
214 type
->base_type
== vtn_base_type_struct
&& type
->block
) {
215 /* We are doing an OpPtrAccessChain on a pointer to a struct that is
216 * decorated block. This is an interesting corner in the SPIR-V
217 * spec. One interpretation would be that they client is clearly
218 * trying to treat that block as if it's an implicit array of blocks
219 * repeated in the buffer. However, the SPIR-V spec for the
220 * OpPtrAccessChain says:
222 * "Base is treated as the address of the first element of an
223 * array, and the Element element’s address is computed to be the
224 * base for the Indexes, as per OpAccessChain."
226 * Taken literally, that would mean that your struct type is supposed
227 * to be treated as an array of such a struct and, since it's
228 * decorated block, that means an array of blocks which corresponds
229 * to an array descriptor. Therefore, we need to do a reindex
230 * operation to add the index from the first link in the access chain
231 * to the index we recieved.
233 * The downside to this interpretation (there always is one) is that
234 * this might be somewhat surprising behavior to apps if they expect
235 * the implicit array behavior described above.
237 vtn_assert(deref_chain
->length
>= 1);
238 nir_ssa_def
*offset_index
=
239 vtn_access_link_as_ssa(b
, deref_chain
->link
[0], 1, 32);
242 block_index
= vtn_resource_reindex(b
, block_index
, offset_index
);
247 if (base
->mode
== vtn_variable_mode_workgroup
) {
248 /* SLM doesn't need nor have a block index */
249 vtn_assert(!block_index
);
251 /* We need the variable for the base offset */
252 vtn_assert(base
->var
);
254 /* We need ptr_type for size and alignment */
255 vtn_assert(base
->ptr_type
);
257 /* Assign location on first use so that we don't end up bloating SLM
258 * address space for variables which are never statically used.
260 if (base
->var
->shared_location
< 0) {
261 vtn_assert(base
->ptr_type
->length
> 0 && base
->ptr_type
->align
> 0);
262 b
->shader
->num_shared
= vtn_align_u32(b
->shader
->num_shared
,
263 base
->ptr_type
->align
);
264 base
->var
->shared_location
= b
->shader
->num_shared
;
265 b
->shader
->num_shared
+= base
->ptr_type
->length
;
268 offset
= nir_imm_int(&b
->nb
, base
->var
->shared_location
);
269 } else if (base
->mode
== vtn_variable_mode_push_constant
) {
270 /* Push constants neither need nor have a block index */
271 vtn_assert(!block_index
);
273 /* Start off with at the start of the push constant block. */
274 offset
= nir_imm_int(&b
->nb
, 0);
276 /* The code above should have ensured a block_index when needed. */
277 vtn_assert(block_index
);
279 /* Start off with at the start of the buffer. */
280 offset
= nir_imm_int(&b
->nb
, 0);
284 if (deref_chain
->ptr_as_array
&& idx
== 0) {
285 /* We need ptr_type for the stride */
286 vtn_assert(base
->ptr_type
);
288 /* We need at least one element in the chain */
289 vtn_assert(deref_chain
->length
>= 1);
291 nir_ssa_def
*elem_offset
=
292 vtn_access_link_as_ssa(b
, deref_chain
->link
[idx
],
293 base
->ptr_type
->stride
, offset
->bit_size
);
294 offset
= nir_iadd(&b
->nb
, offset
, elem_offset
);
298 for (; idx
< deref_chain
->length
; idx
++) {
299 switch (glsl_get_base_type(type
->type
)) {
302 case GLSL_TYPE_UINT16
:
303 case GLSL_TYPE_INT16
:
304 case GLSL_TYPE_UINT8
:
306 case GLSL_TYPE_UINT64
:
307 case GLSL_TYPE_INT64
:
308 case GLSL_TYPE_FLOAT
:
309 case GLSL_TYPE_FLOAT16
:
310 case GLSL_TYPE_DOUBLE
:
312 case GLSL_TYPE_ARRAY
: {
313 nir_ssa_def
*elem_offset
=
314 vtn_access_link_as_ssa(b
, deref_chain
->link
[idx
],
315 type
->stride
, offset
->bit_size
);
316 offset
= nir_iadd(&b
->nb
, offset
, elem_offset
);
317 type
= type
->array_element
;
318 access
|= type
->access
;
322 case GLSL_TYPE_STRUCT
: {
323 vtn_assert(deref_chain
->link
[idx
].mode
== vtn_access_mode_literal
);
324 unsigned member
= deref_chain
->link
[idx
].id
;
325 offset
= nir_iadd_imm(&b
->nb
, offset
, type
->offsets
[member
]);
326 type
= type
->members
[member
];
327 access
|= type
->access
;
332 vtn_fail("Invalid type for deref");
336 struct vtn_pointer
*ptr
= rzalloc(b
, struct vtn_pointer
);
337 ptr
->mode
= base
->mode
;
339 ptr
->block_index
= block_index
;
340 ptr
->offset
= offset
;
341 ptr
->access
= access
;
346 /* Dereference the given base pointer by the access chain */
347 static struct vtn_pointer
*
348 vtn_pointer_dereference(struct vtn_builder
*b
,
349 struct vtn_pointer
*base
,
350 struct vtn_access_chain
*deref_chain
)
352 if (vtn_pointer_uses_ssa_offset(b
, base
)) {
353 return vtn_ssa_offset_pointer_dereference(b
, base
, deref_chain
);
355 return vtn_nir_deref_pointer_dereference(b
, base
, deref_chain
);
360 vtn_pointer_for_variable(struct vtn_builder
*b
,
361 struct vtn_variable
*var
, struct vtn_type
*ptr_type
)
363 struct vtn_pointer
*pointer
= rzalloc(b
, struct vtn_pointer
);
365 pointer
->mode
= var
->mode
;
366 pointer
->type
= var
->type
;
367 vtn_assert(ptr_type
->base_type
== vtn_base_type_pointer
);
368 vtn_assert(ptr_type
->deref
->type
== var
->type
->type
);
369 pointer
->ptr_type
= ptr_type
;
371 pointer
->access
= var
->access
| var
->type
->access
;
376 /* Returns an atomic_uint type based on the original uint type. The returned
377 * type will be equivalent to the original one but will have an atomic_uint
378 * type as leaf instead of an uint.
380 * Manages uint scalars, arrays, and arrays of arrays of any nested depth.
382 static const struct glsl_type
*
383 repair_atomic_type(const struct glsl_type
*type
)
385 assert(glsl_get_base_type(glsl_without_array(type
)) == GLSL_TYPE_UINT
);
386 assert(glsl_type_is_scalar(glsl_without_array(type
)));
388 if (glsl_type_is_array(type
)) {
389 const struct glsl_type
*atomic
=
390 repair_atomic_type(glsl_get_array_element(type
));
392 return glsl_array_type(atomic
, glsl_get_length(type
),
393 glsl_get_explicit_stride(type
));
395 return glsl_atomic_uint_type();
400 vtn_pointer_to_deref(struct vtn_builder
*b
, struct vtn_pointer
*ptr
)
402 /* Do on-the-fly copy propagation for samplers. */
403 if (ptr
->var
&& ptr
->var
->copy_prop_sampler
)
404 return vtn_pointer_to_deref(b
, ptr
->var
->copy_prop_sampler
);
406 vtn_assert(!vtn_pointer_uses_ssa_offset(b
, ptr
));
408 struct vtn_access_chain chain
= {
411 ptr
= vtn_nir_deref_pointer_dereference(b
, ptr
, &chain
);
418 _vtn_local_load_store(struct vtn_builder
*b
, bool load
, nir_deref_instr
*deref
,
419 struct vtn_ssa_value
*inout
)
421 if (glsl_type_is_vector_or_scalar(deref
->type
)) {
423 inout
->def
= nir_load_deref(&b
->nb
, deref
);
425 nir_store_deref(&b
->nb
, deref
, inout
->def
, ~0);
427 } else if (glsl_type_is_array(deref
->type
) ||
428 glsl_type_is_matrix(deref
->type
)) {
429 unsigned elems
= glsl_get_length(deref
->type
);
430 for (unsigned i
= 0; i
< elems
; i
++) {
431 nir_deref_instr
*child
=
432 nir_build_deref_array(&b
->nb
, deref
, nir_imm_int(&b
->nb
, i
));
433 _vtn_local_load_store(b
, load
, child
, inout
->elems
[i
]);
436 vtn_assert(glsl_type_is_struct(deref
->type
));
437 unsigned elems
= glsl_get_length(deref
->type
);
438 for (unsigned i
= 0; i
< elems
; i
++) {
439 nir_deref_instr
*child
= nir_build_deref_struct(&b
->nb
, deref
, i
);
440 _vtn_local_load_store(b
, load
, child
, inout
->elems
[i
]);
446 vtn_nir_deref(struct vtn_builder
*b
, uint32_t id
)
448 struct vtn_pointer
*ptr
= vtn_value(b
, id
, vtn_value_type_pointer
)->pointer
;
449 return vtn_pointer_to_deref(b
, ptr
);
453 * Gets the NIR-level deref tail, which may have as a child an array deref
454 * selecting which component due to OpAccessChain supporting per-component
455 * indexing in SPIR-V.
457 static nir_deref_instr
*
458 get_deref_tail(nir_deref_instr
*deref
)
460 if (deref
->deref_type
!= nir_deref_type_array
)
463 nir_deref_instr
*parent
=
464 nir_instr_as_deref(deref
->parent
.ssa
->parent_instr
);
466 if (glsl_type_is_vector(parent
->type
))
472 struct vtn_ssa_value
*
473 vtn_local_load(struct vtn_builder
*b
, nir_deref_instr
*src
)
475 nir_deref_instr
*src_tail
= get_deref_tail(src
);
476 struct vtn_ssa_value
*val
= vtn_create_ssa_value(b
, src_tail
->type
);
477 _vtn_local_load_store(b
, true, src_tail
, val
);
479 if (src_tail
!= src
) {
480 val
->type
= src
->type
;
481 if (nir_src_is_const(src
->arr
.index
))
482 val
->def
= vtn_vector_extract(b
, val
->def
,
483 nir_src_as_uint(src
->arr
.index
));
485 val
->def
= vtn_vector_extract_dynamic(b
, val
->def
, src
->arr
.index
.ssa
);
492 vtn_local_store(struct vtn_builder
*b
, struct vtn_ssa_value
*src
,
493 nir_deref_instr
*dest
)
495 nir_deref_instr
*dest_tail
= get_deref_tail(dest
);
497 if (dest_tail
!= dest
) {
498 struct vtn_ssa_value
*val
= vtn_create_ssa_value(b
, dest_tail
->type
);
499 _vtn_local_load_store(b
, true, dest_tail
, val
);
501 if (nir_src_is_const(dest
->arr
.index
))
502 val
->def
= vtn_vector_insert(b
, val
->def
, src
->def
,
503 nir_src_as_uint(dest
->arr
.index
));
505 val
->def
= vtn_vector_insert_dynamic(b
, val
->def
, src
->def
,
506 dest
->arr
.index
.ssa
);
507 _vtn_local_load_store(b
, false, dest_tail
, val
);
509 _vtn_local_load_store(b
, false, dest_tail
, src
);
514 vtn_pointer_to_offset(struct vtn_builder
*b
, struct vtn_pointer
*ptr
,
515 nir_ssa_def
**index_out
)
517 assert(vtn_pointer_uses_ssa_offset(b
, ptr
));
519 struct vtn_access_chain chain
= {
522 ptr
= vtn_ssa_offset_pointer_dereference(b
, ptr
, &chain
);
524 *index_out
= ptr
->block_index
;
528 /* Tries to compute the size of an interface block based on the strides and
529 * offsets that are provided to us in the SPIR-V source.
532 vtn_type_block_size(struct vtn_builder
*b
, struct vtn_type
*type
)
534 enum glsl_base_type base_type
= glsl_get_base_type(type
->type
);
538 case GLSL_TYPE_UINT16
:
539 case GLSL_TYPE_INT16
:
540 case GLSL_TYPE_UINT8
:
542 case GLSL_TYPE_UINT64
:
543 case GLSL_TYPE_INT64
:
544 case GLSL_TYPE_FLOAT
:
545 case GLSL_TYPE_FLOAT16
:
547 case GLSL_TYPE_DOUBLE
: {
548 unsigned cols
= type
->row_major
? glsl_get_vector_elements(type
->type
) :
549 glsl_get_matrix_columns(type
->type
);
551 vtn_assert(type
->stride
> 0);
552 return type
->stride
* cols
;
554 unsigned type_size
= glsl_get_bit_size(type
->type
) / 8;
555 return glsl_get_vector_elements(type
->type
) * type_size
;
559 case GLSL_TYPE_STRUCT
:
560 case GLSL_TYPE_INTERFACE
: {
562 unsigned num_fields
= glsl_get_length(type
->type
);
563 for (unsigned f
= 0; f
< num_fields
; f
++) {
564 unsigned field_end
= type
->offsets
[f
] +
565 vtn_type_block_size(b
, type
->members
[f
]);
566 size
= MAX2(size
, field_end
);
571 case GLSL_TYPE_ARRAY
:
572 vtn_assert(type
->stride
> 0);
573 vtn_assert(glsl_get_length(type
->type
) > 0);
574 return type
->stride
* glsl_get_length(type
->type
);
577 vtn_fail("Invalid block type");
583 _vtn_load_store_tail(struct vtn_builder
*b
, nir_intrinsic_op op
, bool load
,
584 nir_ssa_def
*index
, nir_ssa_def
*offset
,
585 unsigned access_offset
, unsigned access_size
,
586 struct vtn_ssa_value
**inout
, const struct glsl_type
*type
,
587 enum gl_access_qualifier access
)
589 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(b
->nb
.shader
, op
);
590 instr
->num_components
= glsl_get_vector_elements(type
);
592 /* Booleans usually shouldn't show up in external memory in SPIR-V.
593 * However, they do for certain older GLSLang versions and can for shared
594 * memory when we lower access chains internally.
596 const unsigned data_bit_size
= glsl_type_is_boolean(type
) ? 32 :
597 glsl_get_bit_size(type
);
601 nir_intrinsic_set_write_mask(instr
, (1 << instr
->num_components
) - 1);
602 instr
->src
[src
++] = nir_src_for_ssa((*inout
)->def
);
605 if (op
== nir_intrinsic_load_push_constant
) {
606 nir_intrinsic_set_base(instr
, access_offset
);
607 nir_intrinsic_set_range(instr
, access_size
);
610 if (op
== nir_intrinsic_load_ssbo
||
611 op
== nir_intrinsic_store_ssbo
) {
612 nir_intrinsic_set_access(instr
, access
);
615 /* With extensions like relaxed_block_layout, we really can't guarantee
616 * much more than scalar alignment.
618 if (op
!= nir_intrinsic_load_push_constant
)
619 nir_intrinsic_set_align(instr
, data_bit_size
/ 8, 0);
622 instr
->src
[src
++] = nir_src_for_ssa(index
);
624 if (op
== nir_intrinsic_load_push_constant
) {
625 /* We need to subtract the offset from where the intrinsic will load the
628 nir_src_for_ssa(nir_isub(&b
->nb
, offset
,
629 nir_imm_int(&b
->nb
, access_offset
)));
631 instr
->src
[src
++] = nir_src_for_ssa(offset
);
635 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
636 instr
->num_components
, data_bit_size
, NULL
);
637 (*inout
)->def
= &instr
->dest
.ssa
;
640 nir_builder_instr_insert(&b
->nb
, &instr
->instr
);
642 if (load
&& glsl_get_base_type(type
) == GLSL_TYPE_BOOL
)
643 (*inout
)->def
= nir_ine(&b
->nb
, (*inout
)->def
, nir_imm_int(&b
->nb
, 0));
647 _vtn_block_load_store(struct vtn_builder
*b
, nir_intrinsic_op op
, bool load
,
648 nir_ssa_def
*index
, nir_ssa_def
*offset
,
649 unsigned access_offset
, unsigned access_size
,
650 struct vtn_type
*type
, enum gl_access_qualifier access
,
651 struct vtn_ssa_value
**inout
)
653 if (load
&& *inout
== NULL
)
654 *inout
= vtn_create_ssa_value(b
, type
->type
);
656 enum glsl_base_type base_type
= glsl_get_base_type(type
->type
);
660 case GLSL_TYPE_UINT16
:
661 case GLSL_TYPE_INT16
:
662 case GLSL_TYPE_UINT8
:
664 case GLSL_TYPE_UINT64
:
665 case GLSL_TYPE_INT64
:
666 case GLSL_TYPE_FLOAT
:
667 case GLSL_TYPE_FLOAT16
:
668 case GLSL_TYPE_DOUBLE
:
670 /* This is where things get interesting. At this point, we've hit
671 * a vector, a scalar, or a matrix.
673 if (glsl_type_is_matrix(type
->type
)) {
674 /* Loading the whole matrix */
675 struct vtn_ssa_value
*transpose
;
676 unsigned num_ops
, vec_width
, col_stride
;
677 if (type
->row_major
) {
678 num_ops
= glsl_get_vector_elements(type
->type
);
679 vec_width
= glsl_get_matrix_columns(type
->type
);
680 col_stride
= type
->array_element
->stride
;
682 const struct glsl_type
*transpose_type
=
683 glsl_matrix_type(base_type
, vec_width
, num_ops
);
684 *inout
= vtn_create_ssa_value(b
, transpose_type
);
686 transpose
= vtn_ssa_transpose(b
, *inout
);
690 num_ops
= glsl_get_matrix_columns(type
->type
);
691 vec_width
= glsl_get_vector_elements(type
->type
);
692 col_stride
= type
->stride
;
695 for (unsigned i
= 0; i
< num_ops
; i
++) {
696 nir_ssa_def
*elem_offset
=
697 nir_iadd_imm(&b
->nb
, offset
, i
* col_stride
);
698 _vtn_load_store_tail(b
, op
, load
, index
, elem_offset
,
699 access_offset
, access_size
,
701 glsl_vector_type(base_type
, vec_width
),
702 type
->access
| access
);
705 if (load
&& type
->row_major
)
706 *inout
= vtn_ssa_transpose(b
, *inout
);
708 unsigned elems
= glsl_get_vector_elements(type
->type
);
709 unsigned type_size
= glsl_get_bit_size(type
->type
) / 8;
710 if (elems
== 1 || type
->stride
== type_size
) {
711 /* This is a tightly-packed normal scalar or vector load */
712 vtn_assert(glsl_type_is_vector_or_scalar(type
->type
));
713 _vtn_load_store_tail(b
, op
, load
, index
, offset
,
714 access_offset
, access_size
,
716 type
->access
| access
);
718 /* This is a strided load. We have to load N things separately.
719 * This is the single column of a row-major matrix case.
721 vtn_assert(type
->stride
> type_size
);
722 vtn_assert(type
->stride
% type_size
== 0);
724 nir_ssa_def
*per_comp
[4];
725 for (unsigned i
= 0; i
< elems
; i
++) {
726 nir_ssa_def
*elem_offset
=
727 nir_iadd_imm(&b
->nb
, offset
, i
* type
->stride
);
728 struct vtn_ssa_value
*comp
, temp_val
;
730 temp_val
.def
= nir_channel(&b
->nb
, (*inout
)->def
, i
);
731 temp_val
.type
= glsl_scalar_type(base_type
);
734 _vtn_load_store_tail(b
, op
, load
, index
, elem_offset
,
735 access_offset
, access_size
,
736 &comp
, glsl_scalar_type(base_type
),
737 type
->access
| access
);
738 per_comp
[i
] = comp
->def
;
743 *inout
= vtn_create_ssa_value(b
, type
->type
);
744 (*inout
)->def
= nir_vec(&b
->nb
, per_comp
, elems
);
750 case GLSL_TYPE_ARRAY
: {
751 unsigned elems
= glsl_get_length(type
->type
);
752 for (unsigned i
= 0; i
< elems
; i
++) {
753 nir_ssa_def
*elem_off
=
754 nir_iadd_imm(&b
->nb
, offset
, i
* type
->stride
);
755 _vtn_block_load_store(b
, op
, load
, index
, elem_off
,
756 access_offset
, access_size
,
758 type
->array_element
->access
| access
,
759 &(*inout
)->elems
[i
]);
764 case GLSL_TYPE_STRUCT
: {
765 unsigned elems
= glsl_get_length(type
->type
);
766 for (unsigned i
= 0; i
< elems
; i
++) {
767 nir_ssa_def
*elem_off
=
768 nir_iadd_imm(&b
->nb
, offset
, type
->offsets
[i
]);
769 _vtn_block_load_store(b
, op
, load
, index
, elem_off
,
770 access_offset
, access_size
,
772 type
->members
[i
]->access
| access
,
773 &(*inout
)->elems
[i
]);
779 vtn_fail("Invalid block member type");
783 static struct vtn_ssa_value
*
784 vtn_block_load(struct vtn_builder
*b
, struct vtn_pointer
*src
)
787 unsigned access_offset
= 0, access_size
= 0;
789 case vtn_variable_mode_ubo
:
790 op
= nir_intrinsic_load_ubo
;
792 case vtn_variable_mode_ssbo
:
793 op
= nir_intrinsic_load_ssbo
;
795 case vtn_variable_mode_push_constant
:
796 op
= nir_intrinsic_load_push_constant
;
797 access_size
= b
->shader
->num_uniforms
;
799 case vtn_variable_mode_workgroup
:
800 op
= nir_intrinsic_load_shared
;
803 vtn_fail("Invalid block variable mode");
806 nir_ssa_def
*offset
, *index
= NULL
;
807 offset
= vtn_pointer_to_offset(b
, src
, &index
);
809 struct vtn_ssa_value
*value
= NULL
;
810 _vtn_block_load_store(b
, op
, true, index
, offset
,
811 access_offset
, access_size
,
812 src
->type
, src
->access
, &value
);
817 vtn_block_store(struct vtn_builder
*b
, struct vtn_ssa_value
*src
,
818 struct vtn_pointer
*dst
)
822 case vtn_variable_mode_ssbo
:
823 op
= nir_intrinsic_store_ssbo
;
825 case vtn_variable_mode_workgroup
:
826 op
= nir_intrinsic_store_shared
;
829 vtn_fail("Invalid block variable mode");
832 nir_ssa_def
*offset
, *index
= NULL
;
833 offset
= vtn_pointer_to_offset(b
, dst
, &index
);
835 _vtn_block_load_store(b
, op
, false, index
, offset
,
836 0, 0, dst
->type
, dst
->access
, &src
);
840 _vtn_variable_load_store(struct vtn_builder
*b
, bool load
,
841 struct vtn_pointer
*ptr
,
842 struct vtn_ssa_value
**inout
)
844 enum glsl_base_type base_type
= glsl_get_base_type(ptr
->type
->type
);
848 case GLSL_TYPE_UINT16
:
849 case GLSL_TYPE_INT16
:
850 case GLSL_TYPE_UINT8
:
852 case GLSL_TYPE_UINT64
:
853 case GLSL_TYPE_INT64
:
854 case GLSL_TYPE_FLOAT
:
855 case GLSL_TYPE_FLOAT16
:
857 case GLSL_TYPE_DOUBLE
:
858 /* At this point, we have a scalar, vector, or matrix so we know that
859 * there cannot be any structure splitting still in the way. By
860 * stopping at the matrix level rather than the vector level, we
861 * ensure that matrices get loaded in the optimal way even if they
862 * are storred row-major in a UBO.
865 *inout
= vtn_local_load(b
, vtn_pointer_to_deref(b
, ptr
));
867 vtn_local_store(b
, *inout
, vtn_pointer_to_deref(b
, ptr
));
871 case GLSL_TYPE_ARRAY
:
872 case GLSL_TYPE_STRUCT
: {
873 unsigned elems
= glsl_get_length(ptr
->type
->type
);
875 vtn_assert(*inout
== NULL
);
876 *inout
= rzalloc(b
, struct vtn_ssa_value
);
877 (*inout
)->type
= ptr
->type
->type
;
878 (*inout
)->elems
= rzalloc_array(b
, struct vtn_ssa_value
*, elems
);
881 struct vtn_access_chain chain
= {
884 { .mode
= vtn_access_mode_literal
, },
887 for (unsigned i
= 0; i
< elems
; i
++) {
888 chain
.link
[0].id
= i
;
889 struct vtn_pointer
*elem
= vtn_pointer_dereference(b
, ptr
, &chain
);
890 _vtn_variable_load_store(b
, load
, elem
, &(*inout
)->elems
[i
]);
896 vtn_fail("Invalid access chain type");
900 struct vtn_ssa_value
*
901 vtn_variable_load(struct vtn_builder
*b
, struct vtn_pointer
*src
)
903 if (vtn_pointer_is_external_block(b
, src
)) {
904 return vtn_block_load(b
, src
);
906 struct vtn_ssa_value
*val
= NULL
;
907 _vtn_variable_load_store(b
, true, src
, &val
);
913 vtn_variable_store(struct vtn_builder
*b
, struct vtn_ssa_value
*src
,
914 struct vtn_pointer
*dest
)
916 if (vtn_pointer_is_external_block(b
, dest
)) {
917 vtn_assert(dest
->mode
== vtn_variable_mode_ssbo
||
918 dest
->mode
== vtn_variable_mode_workgroup
);
919 vtn_block_store(b
, src
, dest
);
921 _vtn_variable_load_store(b
, false, dest
, &src
);
926 _vtn_variable_copy(struct vtn_builder
*b
, struct vtn_pointer
*dest
,
927 struct vtn_pointer
*src
)
929 vtn_assert(src
->type
->type
== dest
->type
->type
);
930 enum glsl_base_type base_type
= glsl_get_base_type(src
->type
->type
);
934 case GLSL_TYPE_UINT16
:
935 case GLSL_TYPE_INT16
:
936 case GLSL_TYPE_UINT8
:
938 case GLSL_TYPE_UINT64
:
939 case GLSL_TYPE_INT64
:
940 case GLSL_TYPE_FLOAT
:
941 case GLSL_TYPE_FLOAT16
:
942 case GLSL_TYPE_DOUBLE
:
944 /* At this point, we have a scalar, vector, or matrix so we know that
945 * there cannot be any structure splitting still in the way. By
946 * stopping at the matrix level rather than the vector level, we
947 * ensure that matrices get loaded in the optimal way even if they
948 * are storred row-major in a UBO.
950 vtn_variable_store(b
, vtn_variable_load(b
, src
), dest
);
953 case GLSL_TYPE_ARRAY
:
954 case GLSL_TYPE_STRUCT
: {
955 struct vtn_access_chain chain
= {
958 { .mode
= vtn_access_mode_literal
, },
961 unsigned elems
= glsl_get_length(src
->type
->type
);
962 for (unsigned i
= 0; i
< elems
; i
++) {
963 chain
.link
[0].id
= i
;
964 struct vtn_pointer
*src_elem
=
965 vtn_pointer_dereference(b
, src
, &chain
);
966 struct vtn_pointer
*dest_elem
=
967 vtn_pointer_dereference(b
, dest
, &chain
);
969 _vtn_variable_copy(b
, dest_elem
, src_elem
);
975 vtn_fail("Invalid access chain type");
980 vtn_variable_copy(struct vtn_builder
*b
, struct vtn_pointer
*dest
,
981 struct vtn_pointer
*src
)
983 /* TODO: At some point, we should add a special-case for when we can
984 * just emit a copy_var intrinsic.
986 _vtn_variable_copy(b
, dest
, src
);
990 set_mode_system_value(struct vtn_builder
*b
, nir_variable_mode
*mode
)
992 vtn_assert(*mode
== nir_var_system_value
|| *mode
== nir_var_shader_in
);
993 *mode
= nir_var_system_value
;
997 vtn_get_builtin_location(struct vtn_builder
*b
,
998 SpvBuiltIn builtin
, int *location
,
999 nir_variable_mode
*mode
)
1002 case SpvBuiltInPosition
:
1003 *location
= VARYING_SLOT_POS
;
1005 case SpvBuiltInPointSize
:
1006 *location
= VARYING_SLOT_PSIZ
;
1008 case SpvBuiltInClipDistance
:
1009 *location
= VARYING_SLOT_CLIP_DIST0
; /* XXX CLIP_DIST1? */
1011 case SpvBuiltInCullDistance
:
1012 *location
= VARYING_SLOT_CULL_DIST0
;
1014 case SpvBuiltInVertexId
:
1015 case SpvBuiltInVertexIndex
:
1016 /* The Vulkan spec defines VertexIndex to be non-zero-based and doesn't
1017 * allow VertexId. The ARB_gl_spirv spec defines VertexId to be the
1018 * same as gl_VertexID, which is non-zero-based, and removes
1019 * VertexIndex. Since they're both defined to be non-zero-based, we use
1020 * SYSTEM_VALUE_VERTEX_ID for both.
1022 *location
= SYSTEM_VALUE_VERTEX_ID
;
1023 set_mode_system_value(b
, mode
);
1025 case SpvBuiltInInstanceIndex
:
1026 *location
= SYSTEM_VALUE_INSTANCE_INDEX
;
1027 set_mode_system_value(b
, mode
);
1029 case SpvBuiltInInstanceId
:
1030 *location
= SYSTEM_VALUE_INSTANCE_ID
;
1031 set_mode_system_value(b
, mode
);
1033 case SpvBuiltInPrimitiveId
:
1034 if (b
->shader
->info
.stage
== MESA_SHADER_FRAGMENT
) {
1035 vtn_assert(*mode
== nir_var_shader_in
);
1036 *location
= VARYING_SLOT_PRIMITIVE_ID
;
1037 } else if (*mode
== nir_var_shader_out
) {
1038 *location
= VARYING_SLOT_PRIMITIVE_ID
;
1040 *location
= SYSTEM_VALUE_PRIMITIVE_ID
;
1041 set_mode_system_value(b
, mode
);
1044 case SpvBuiltInInvocationId
:
1045 *location
= SYSTEM_VALUE_INVOCATION_ID
;
1046 set_mode_system_value(b
, mode
);
1048 case SpvBuiltInLayer
:
1049 *location
= VARYING_SLOT_LAYER
;
1050 if (b
->shader
->info
.stage
== MESA_SHADER_FRAGMENT
)
1051 *mode
= nir_var_shader_in
;
1052 else if (b
->shader
->info
.stage
== MESA_SHADER_GEOMETRY
)
1053 *mode
= nir_var_shader_out
;
1054 else if (b
->options
&& b
->options
->caps
.shader_viewport_index_layer
&&
1055 (b
->shader
->info
.stage
== MESA_SHADER_VERTEX
||
1056 b
->shader
->info
.stage
== MESA_SHADER_TESS_EVAL
))
1057 *mode
= nir_var_shader_out
;
1059 vtn_fail("invalid stage for SpvBuiltInLayer");
1061 case SpvBuiltInViewportIndex
:
1062 *location
= VARYING_SLOT_VIEWPORT
;
1063 if (b
->shader
->info
.stage
== MESA_SHADER_GEOMETRY
)
1064 *mode
= nir_var_shader_out
;
1065 else if (b
->options
&& b
->options
->caps
.shader_viewport_index_layer
&&
1066 (b
->shader
->info
.stage
== MESA_SHADER_VERTEX
||
1067 b
->shader
->info
.stage
== MESA_SHADER_TESS_EVAL
))
1068 *mode
= nir_var_shader_out
;
1069 else if (b
->shader
->info
.stage
== MESA_SHADER_FRAGMENT
)
1070 *mode
= nir_var_shader_in
;
1072 vtn_fail("invalid stage for SpvBuiltInViewportIndex");
1074 case SpvBuiltInTessLevelOuter
:
1075 *location
= VARYING_SLOT_TESS_LEVEL_OUTER
;
1077 case SpvBuiltInTessLevelInner
:
1078 *location
= VARYING_SLOT_TESS_LEVEL_INNER
;
1080 case SpvBuiltInTessCoord
:
1081 *location
= SYSTEM_VALUE_TESS_COORD
;
1082 set_mode_system_value(b
, mode
);
1084 case SpvBuiltInPatchVertices
:
1085 *location
= SYSTEM_VALUE_VERTICES_IN
;
1086 set_mode_system_value(b
, mode
);
1088 case SpvBuiltInFragCoord
:
1089 *location
= VARYING_SLOT_POS
;
1090 vtn_assert(*mode
== nir_var_shader_in
);
1092 case SpvBuiltInPointCoord
:
1093 *location
= VARYING_SLOT_PNTC
;
1094 vtn_assert(*mode
== nir_var_shader_in
);
1096 case SpvBuiltInFrontFacing
:
1097 *location
= SYSTEM_VALUE_FRONT_FACE
;
1098 set_mode_system_value(b
, mode
);
1100 case SpvBuiltInSampleId
:
1101 *location
= SYSTEM_VALUE_SAMPLE_ID
;
1102 set_mode_system_value(b
, mode
);
1104 case SpvBuiltInSamplePosition
:
1105 *location
= SYSTEM_VALUE_SAMPLE_POS
;
1106 set_mode_system_value(b
, mode
);
1108 case SpvBuiltInSampleMask
:
1109 if (*mode
== nir_var_shader_out
) {
1110 *location
= FRAG_RESULT_SAMPLE_MASK
;
1112 *location
= SYSTEM_VALUE_SAMPLE_MASK_IN
;
1113 set_mode_system_value(b
, mode
);
1116 case SpvBuiltInFragDepth
:
1117 *location
= FRAG_RESULT_DEPTH
;
1118 vtn_assert(*mode
== nir_var_shader_out
);
1120 case SpvBuiltInHelperInvocation
:
1121 *location
= SYSTEM_VALUE_HELPER_INVOCATION
;
1122 set_mode_system_value(b
, mode
);
1124 case SpvBuiltInNumWorkgroups
:
1125 *location
= SYSTEM_VALUE_NUM_WORK_GROUPS
;
1126 set_mode_system_value(b
, mode
);
1128 case SpvBuiltInWorkgroupSize
:
1129 *location
= SYSTEM_VALUE_LOCAL_GROUP_SIZE
;
1130 set_mode_system_value(b
, mode
);
1132 case SpvBuiltInWorkgroupId
:
1133 *location
= SYSTEM_VALUE_WORK_GROUP_ID
;
1134 set_mode_system_value(b
, mode
);
1136 case SpvBuiltInLocalInvocationId
:
1137 *location
= SYSTEM_VALUE_LOCAL_INVOCATION_ID
;
1138 set_mode_system_value(b
, mode
);
1140 case SpvBuiltInLocalInvocationIndex
:
1141 *location
= SYSTEM_VALUE_LOCAL_INVOCATION_INDEX
;
1142 set_mode_system_value(b
, mode
);
1144 case SpvBuiltInGlobalInvocationId
:
1145 *location
= SYSTEM_VALUE_GLOBAL_INVOCATION_ID
;
1146 set_mode_system_value(b
, mode
);
1148 case SpvBuiltInBaseVertex
:
1149 /* OpenGL gl_BaseVertex (SYSTEM_VALUE_BASE_VERTEX) is not the same
1150 * semantic as SPIR-V BaseVertex (SYSTEM_VALUE_FIRST_VERTEX).
1152 *location
= SYSTEM_VALUE_FIRST_VERTEX
;
1153 set_mode_system_value(b
, mode
);
1155 case SpvBuiltInBaseInstance
:
1156 *location
= SYSTEM_VALUE_BASE_INSTANCE
;
1157 set_mode_system_value(b
, mode
);
1159 case SpvBuiltInDrawIndex
:
1160 *location
= SYSTEM_VALUE_DRAW_ID
;
1161 set_mode_system_value(b
, mode
);
1163 case SpvBuiltInSubgroupSize
:
1164 *location
= SYSTEM_VALUE_SUBGROUP_SIZE
;
1165 set_mode_system_value(b
, mode
);
1167 case SpvBuiltInSubgroupId
:
1168 *location
= SYSTEM_VALUE_SUBGROUP_ID
;
1169 set_mode_system_value(b
, mode
);
1171 case SpvBuiltInSubgroupLocalInvocationId
:
1172 *location
= SYSTEM_VALUE_SUBGROUP_INVOCATION
;
1173 set_mode_system_value(b
, mode
);
1175 case SpvBuiltInNumSubgroups
:
1176 *location
= SYSTEM_VALUE_NUM_SUBGROUPS
;
1177 set_mode_system_value(b
, mode
);
1179 case SpvBuiltInDeviceIndex
:
1180 *location
= SYSTEM_VALUE_DEVICE_INDEX
;
1181 set_mode_system_value(b
, mode
);
1183 case SpvBuiltInViewIndex
:
1184 *location
= SYSTEM_VALUE_VIEW_INDEX
;
1185 set_mode_system_value(b
, mode
);
1187 case SpvBuiltInSubgroupEqMask
:
1188 *location
= SYSTEM_VALUE_SUBGROUP_EQ_MASK
,
1189 set_mode_system_value(b
, mode
);
1191 case SpvBuiltInSubgroupGeMask
:
1192 *location
= SYSTEM_VALUE_SUBGROUP_GE_MASK
,
1193 set_mode_system_value(b
, mode
);
1195 case SpvBuiltInSubgroupGtMask
:
1196 *location
= SYSTEM_VALUE_SUBGROUP_GT_MASK
,
1197 set_mode_system_value(b
, mode
);
1199 case SpvBuiltInSubgroupLeMask
:
1200 *location
= SYSTEM_VALUE_SUBGROUP_LE_MASK
,
1201 set_mode_system_value(b
, mode
);
1203 case SpvBuiltInSubgroupLtMask
:
1204 *location
= SYSTEM_VALUE_SUBGROUP_LT_MASK
,
1205 set_mode_system_value(b
, mode
);
1207 case SpvBuiltInFragStencilRefEXT
:
1208 *location
= FRAG_RESULT_STENCIL
;
1209 vtn_assert(*mode
== nir_var_shader_out
);
1211 case SpvBuiltInWorkDim
:
1212 *location
= SYSTEM_VALUE_WORK_DIM
;
1213 set_mode_system_value(b
, mode
);
1215 case SpvBuiltInGlobalSize
:
1216 *location
= SYSTEM_VALUE_GLOBAL_GROUP_SIZE
;
1217 set_mode_system_value(b
, mode
);
1220 vtn_fail("unsupported builtin: %u", builtin
);
1225 apply_var_decoration(struct vtn_builder
*b
,
1226 struct nir_variable_data
*var_data
,
1227 const struct vtn_decoration
*dec
)
1229 switch (dec
->decoration
) {
1230 case SpvDecorationRelaxedPrecision
:
1231 break; /* FIXME: Do nothing with this for now. */
1232 case SpvDecorationNoPerspective
:
1233 var_data
->interpolation
= INTERP_MODE_NOPERSPECTIVE
;
1235 case SpvDecorationFlat
:
1236 var_data
->interpolation
= INTERP_MODE_FLAT
;
1238 case SpvDecorationCentroid
:
1239 var_data
->centroid
= true;
1241 case SpvDecorationSample
:
1242 var_data
->sample
= true;
1244 case SpvDecorationInvariant
:
1245 var_data
->invariant
= true;
1247 case SpvDecorationConstant
:
1248 var_data
->read_only
= true;
1250 case SpvDecorationNonReadable
:
1251 var_data
->image
.access
|= ACCESS_NON_READABLE
;
1253 case SpvDecorationNonWritable
:
1254 var_data
->read_only
= true;
1255 var_data
->image
.access
|= ACCESS_NON_WRITEABLE
;
1257 case SpvDecorationRestrict
:
1258 var_data
->image
.access
|= ACCESS_RESTRICT
;
1260 case SpvDecorationVolatile
:
1261 var_data
->image
.access
|= ACCESS_VOLATILE
;
1263 case SpvDecorationCoherent
:
1264 var_data
->image
.access
|= ACCESS_COHERENT
;
1266 case SpvDecorationComponent
:
1267 var_data
->location_frac
= dec
->literals
[0];
1269 case SpvDecorationIndex
:
1270 var_data
->index
= dec
->literals
[0];
1272 case SpvDecorationBuiltIn
: {
1273 SpvBuiltIn builtin
= dec
->literals
[0];
1275 nir_variable_mode mode
= var_data
->mode
;
1276 vtn_get_builtin_location(b
, builtin
, &var_data
->location
, &mode
);
1277 var_data
->mode
= mode
;
1280 case SpvBuiltInTessLevelOuter
:
1281 case SpvBuiltInTessLevelInner
:
1282 var_data
->compact
= true;
1284 case SpvBuiltInFragCoord
:
1285 var_data
->pixel_center_integer
= b
->pixel_center_integer
;
1287 case SpvBuiltInSamplePosition
:
1288 var_data
->origin_upper_left
= b
->origin_upper_left
;
1295 case SpvDecorationSpecId
:
1296 case SpvDecorationRowMajor
:
1297 case SpvDecorationColMajor
:
1298 case SpvDecorationMatrixStride
:
1299 case SpvDecorationAliased
:
1300 case SpvDecorationUniform
:
1301 case SpvDecorationLinkageAttributes
:
1302 break; /* Do nothing with these here */
1304 case SpvDecorationPatch
:
1305 var_data
->patch
= true;
1308 case SpvDecorationLocation
:
1309 vtn_fail("Handled above");
1311 case SpvDecorationBlock
:
1312 case SpvDecorationBufferBlock
:
1313 case SpvDecorationArrayStride
:
1314 case SpvDecorationGLSLShared
:
1315 case SpvDecorationGLSLPacked
:
1316 break; /* These can apply to a type but we don't care about them */
1318 case SpvDecorationBinding
:
1319 case SpvDecorationDescriptorSet
:
1320 case SpvDecorationNoContraction
:
1321 case SpvDecorationInputAttachmentIndex
:
1322 vtn_warn("Decoration not allowed for variable or structure member: %s",
1323 spirv_decoration_to_string(dec
->decoration
));
1326 case SpvDecorationXfbBuffer
:
1327 var_data
->explicit_xfb_buffer
= true;
1328 var_data
->xfb_buffer
= dec
->literals
[0];
1329 var_data
->always_active_io
= true;
1331 case SpvDecorationXfbStride
:
1332 var_data
->explicit_xfb_stride
= true;
1333 var_data
->xfb_stride
= dec
->literals
[0];
1335 case SpvDecorationOffset
:
1336 var_data
->explicit_offset
= true;
1337 var_data
->offset
= dec
->literals
[0];
1340 case SpvDecorationStream
:
1341 var_data
->stream
= dec
->literals
[0];
1344 case SpvDecorationCPacked
:
1345 case SpvDecorationSaturatedConversion
:
1346 case SpvDecorationFuncParamAttr
:
1347 case SpvDecorationFPRoundingMode
:
1348 case SpvDecorationFPFastMathMode
:
1349 case SpvDecorationAlignment
:
1350 vtn_warn("Decoration only allowed for CL-style kernels: %s",
1351 spirv_decoration_to_string(dec
->decoration
));
1354 case SpvDecorationHlslSemanticGOOGLE
:
1355 /* HLSL semantic decorations can safely be ignored by the driver. */
1359 vtn_fail("Unhandled decoration");
1364 var_is_patch_cb(struct vtn_builder
*b
, struct vtn_value
*val
, int member
,
1365 const struct vtn_decoration
*dec
, void *out_is_patch
)
1367 if (dec
->decoration
== SpvDecorationPatch
) {
1368 *((bool *) out_is_patch
) = true;
1373 var_decoration_cb(struct vtn_builder
*b
, struct vtn_value
*val
, int member
,
1374 const struct vtn_decoration
*dec
, void *void_var
)
1376 struct vtn_variable
*vtn_var
= void_var
;
1378 /* Handle decorations that apply to a vtn_variable as a whole */
1379 switch (dec
->decoration
) {
1380 case SpvDecorationBinding
:
1381 vtn_var
->binding
= dec
->literals
[0];
1382 vtn_var
->explicit_binding
= true;
1384 case SpvDecorationDescriptorSet
:
1385 vtn_var
->descriptor_set
= dec
->literals
[0];
1387 case SpvDecorationInputAttachmentIndex
:
1388 vtn_var
->input_attachment_index
= dec
->literals
[0];
1390 case SpvDecorationPatch
:
1391 vtn_var
->patch
= true;
1393 case SpvDecorationOffset
:
1394 vtn_var
->offset
= dec
->literals
[0];
1396 case SpvDecorationNonWritable
:
1397 vtn_var
->access
|= ACCESS_NON_WRITEABLE
;
1399 case SpvDecorationNonReadable
:
1400 vtn_var
->access
|= ACCESS_NON_READABLE
;
1402 case SpvDecorationVolatile
:
1403 vtn_var
->access
|= ACCESS_VOLATILE
;
1405 case SpvDecorationCoherent
:
1406 vtn_var
->access
|= ACCESS_COHERENT
;
1408 case SpvDecorationHlslCounterBufferGOOGLE
:
1409 /* HLSL semantic decorations can safely be ignored by the driver. */
1415 if (val
->value_type
== vtn_value_type_pointer
) {
1416 assert(val
->pointer
->var
== void_var
);
1417 assert(member
== -1);
1419 assert(val
->value_type
== vtn_value_type_type
);
1422 /* Location is odd. If applied to a split structure, we have to walk the
1423 * whole thing and accumulate the location. It's easier to handle as a
1426 if (dec
->decoration
== SpvDecorationLocation
) {
1427 unsigned location
= dec
->literals
[0];
1428 bool is_vertex_input
= false;
1429 if (b
->shader
->info
.stage
== MESA_SHADER_FRAGMENT
&&
1430 vtn_var
->mode
== vtn_variable_mode_output
) {
1431 location
+= FRAG_RESULT_DATA0
;
1432 } else if (b
->shader
->info
.stage
== MESA_SHADER_VERTEX
&&
1433 vtn_var
->mode
== vtn_variable_mode_input
) {
1434 is_vertex_input
= true;
1435 location
+= VERT_ATTRIB_GENERIC0
;
1436 } else if (vtn_var
->mode
== vtn_variable_mode_input
||
1437 vtn_var
->mode
== vtn_variable_mode_output
) {
1438 location
+= vtn_var
->patch
? VARYING_SLOT_PATCH0
: VARYING_SLOT_VAR0
;
1439 } else if (vtn_var
->mode
!= vtn_variable_mode_uniform
) {
1440 vtn_warn("Location must be on input, output, uniform, sampler or "
1445 if (vtn_var
->var
->num_members
== 0) {
1446 /* This handles the member and lone variable cases */
1447 vtn_var
->var
->data
.location
= location
;
1449 /* This handles the structure member case */
1450 assert(vtn_var
->var
->members
);
1451 for (unsigned i
= 0; i
< vtn_var
->var
->num_members
; i
++) {
1452 vtn_var
->var
->members
[i
].location
= location
;
1453 const struct glsl_type
*member_type
=
1454 glsl_get_struct_field(vtn_var
->var
->interface_type
, i
);
1455 location
+= glsl_count_attribute_slots(member_type
,
1462 if (vtn_var
->var
->num_members
== 0) {
1463 assert(member
== -1);
1464 apply_var_decoration(b
, &vtn_var
->var
->data
, dec
);
1465 } else if (member
>= 0) {
1466 /* Member decorations must come from a type */
1467 assert(val
->value_type
== vtn_value_type_type
);
1468 apply_var_decoration(b
, &vtn_var
->var
->members
[member
], dec
);
1471 glsl_get_length(glsl_without_array(vtn_var
->type
->type
));
1472 for (unsigned i
= 0; i
< length
; i
++)
1473 apply_var_decoration(b
, &vtn_var
->var
->members
[i
], dec
);
1476 /* A few variables, those with external storage, have no actual
1477 * nir_variables associated with them. Fortunately, all decorations
1478 * we care about for those variables are on the type only.
1480 vtn_assert(vtn_var
->mode
== vtn_variable_mode_ubo
||
1481 vtn_var
->mode
== vtn_variable_mode_ssbo
||
1482 vtn_var
->mode
== vtn_variable_mode_push_constant
||
1483 (vtn_var
->mode
== vtn_variable_mode_workgroup
&&
1484 b
->options
->lower_workgroup_access_to_offsets
));
1489 static enum vtn_variable_mode
1490 vtn_storage_class_to_mode(struct vtn_builder
*b
,
1491 SpvStorageClass
class,
1492 struct vtn_type
*interface_type
,
1493 nir_variable_mode
*nir_mode_out
)
1495 enum vtn_variable_mode mode
;
1496 nir_variable_mode nir_mode
;
1498 case SpvStorageClassUniform
:
1499 if (interface_type
->block
) {
1500 mode
= vtn_variable_mode_ubo
;
1501 nir_mode
= nir_var_ubo
;
1502 } else if (interface_type
->buffer_block
) {
1503 mode
= vtn_variable_mode_ssbo
;
1504 nir_mode
= nir_var_ssbo
;
1506 /* Default-block uniforms, coming from gl_spirv */
1507 mode
= vtn_variable_mode_uniform
;
1508 nir_mode
= nir_var_uniform
;
1511 case SpvStorageClassStorageBuffer
:
1512 mode
= vtn_variable_mode_ssbo
;
1513 nir_mode
= nir_var_ssbo
;
1515 case SpvStorageClassUniformConstant
:
1516 mode
= vtn_variable_mode_uniform
;
1517 nir_mode
= nir_var_uniform
;
1519 case SpvStorageClassPushConstant
:
1520 mode
= vtn_variable_mode_push_constant
;
1521 nir_mode
= nir_var_uniform
;
1523 case SpvStorageClassInput
:
1524 mode
= vtn_variable_mode_input
;
1525 nir_mode
= nir_var_shader_in
;
1527 case SpvStorageClassOutput
:
1528 mode
= vtn_variable_mode_output
;
1529 nir_mode
= nir_var_shader_out
;
1531 case SpvStorageClassPrivate
:
1532 mode
= vtn_variable_mode_global
;
1533 nir_mode
= nir_var_global
;
1535 case SpvStorageClassFunction
:
1536 mode
= vtn_variable_mode_local
;
1537 nir_mode
= nir_var_local
;
1539 case SpvStorageClassWorkgroup
:
1540 mode
= vtn_variable_mode_workgroup
;
1541 nir_mode
= nir_var_shared
;
1543 case SpvStorageClassAtomicCounter
:
1544 mode
= vtn_variable_mode_uniform
;
1545 nir_mode
= nir_var_uniform
;
1547 case SpvStorageClassCrossWorkgroup
:
1548 case SpvStorageClassGeneric
:
1550 vtn_fail("Unhandled variable storage class");
1554 *nir_mode_out
= nir_mode
;
1560 vtn_pointer_to_ssa(struct vtn_builder
*b
, struct vtn_pointer
*ptr
)
1562 if (vtn_pointer_uses_ssa_offset(b
, ptr
)) {
1563 /* This pointer needs to have a pointer type with actual storage */
1564 vtn_assert(ptr
->ptr_type
);
1565 vtn_assert(ptr
->ptr_type
->type
);
1568 /* If we don't have an offset then we must be a pointer to the variable
1571 vtn_assert(!ptr
->offset
&& !ptr
->block_index
);
1573 struct vtn_access_chain chain
= {
1576 ptr
= vtn_ssa_offset_pointer_dereference(b
, ptr
, &chain
);
1579 vtn_assert(ptr
->offset
);
1580 if (ptr
->block_index
) {
1581 vtn_assert(ptr
->mode
== vtn_variable_mode_ubo
||
1582 ptr
->mode
== vtn_variable_mode_ssbo
);
1583 return nir_vec2(&b
->nb
, ptr
->block_index
, ptr
->offset
);
1585 vtn_assert(ptr
->mode
== vtn_variable_mode_workgroup
);
1589 return &vtn_pointer_to_deref(b
, ptr
)->dest
.ssa
;
1593 struct vtn_pointer
*
1594 vtn_pointer_from_ssa(struct vtn_builder
*b
, nir_ssa_def
*ssa
,
1595 struct vtn_type
*ptr_type
)
1597 vtn_assert(ssa
->num_components
<= 2 && ssa
->bit_size
== 32);
1598 vtn_assert(ptr_type
->base_type
== vtn_base_type_pointer
);
1600 struct vtn_type
*interface_type
= ptr_type
->deref
;
1601 while (interface_type
->base_type
== vtn_base_type_array
)
1602 interface_type
= interface_type
->array_element
;
1604 struct vtn_pointer
*ptr
= rzalloc(b
, struct vtn_pointer
);
1605 nir_variable_mode nir_mode
;
1606 ptr
->mode
= vtn_storage_class_to_mode(b
, ptr_type
->storage_class
,
1607 interface_type
, &nir_mode
);
1608 ptr
->type
= ptr_type
->deref
;
1609 ptr
->ptr_type
= ptr_type
;
1611 if (ptr
->mode
== vtn_variable_mode_ubo
||
1612 ptr
->mode
== vtn_variable_mode_ssbo
) {
1613 /* This pointer type needs to have actual storage */
1614 vtn_assert(ptr_type
->type
);
1615 vtn_assert(ssa
->num_components
== 2);
1616 ptr
->block_index
= nir_channel(&b
->nb
, ssa
, 0);
1617 ptr
->offset
= nir_channel(&b
->nb
, ssa
, 1);
1618 } else if ((ptr
->mode
== vtn_variable_mode_workgroup
&&
1619 b
->options
->lower_workgroup_access_to_offsets
) ||
1620 ptr
->mode
== vtn_variable_mode_push_constant
) {
1621 /* This pointer type needs to have actual storage */
1622 vtn_assert(ptr_type
->type
);
1623 vtn_assert(ssa
->num_components
== 1);
1624 ptr
->block_index
= NULL
;
1627 assert(!vtn_pointer_is_external_block(b
, ptr
));
1628 const struct glsl_type
*deref_type
= ptr_type
->deref
->type
;
1629 ptr
->deref
= nir_build_deref_cast(&b
->nb
, ssa
, nir_mode
,
1630 glsl_get_bare_type(deref_type
), 0);
1637 is_per_vertex_inout(const struct vtn_variable
*var
, gl_shader_stage stage
)
1639 if (var
->patch
|| !glsl_type_is_array(var
->type
->type
))
1642 if (var
->mode
== vtn_variable_mode_input
) {
1643 return stage
== MESA_SHADER_TESS_CTRL
||
1644 stage
== MESA_SHADER_TESS_EVAL
||
1645 stage
== MESA_SHADER_GEOMETRY
;
1648 if (var
->mode
== vtn_variable_mode_output
)
1649 return stage
== MESA_SHADER_TESS_CTRL
;
1655 vtn_create_variable(struct vtn_builder
*b
, struct vtn_value
*val
,
1656 struct vtn_type
*ptr_type
, SpvStorageClass storage_class
,
1657 nir_constant
*initializer
)
1659 vtn_assert(ptr_type
->base_type
== vtn_base_type_pointer
);
1660 struct vtn_type
*type
= ptr_type
->deref
;
1662 struct vtn_type
*without_array
= type
;
1663 while(glsl_type_is_array(without_array
->type
))
1664 without_array
= without_array
->array_element
;
1666 enum vtn_variable_mode mode
;
1667 nir_variable_mode nir_mode
;
1668 mode
= vtn_storage_class_to_mode(b
, storage_class
, without_array
, &nir_mode
);
1671 case vtn_variable_mode_ubo
:
1672 b
->shader
->info
.num_ubos
++;
1674 case vtn_variable_mode_ssbo
:
1675 b
->shader
->info
.num_ssbos
++;
1677 case vtn_variable_mode_uniform
:
1678 if (glsl_type_is_image(without_array
->type
))
1679 b
->shader
->info
.num_images
++;
1680 else if (glsl_type_is_sampler(without_array
->type
))
1681 b
->shader
->info
.num_textures
++;
1683 case vtn_variable_mode_push_constant
:
1684 b
->shader
->num_uniforms
= vtn_type_block_size(b
, type
);
1687 /* No tallying is needed */
1691 struct vtn_variable
*var
= rzalloc(b
, struct vtn_variable
);
1695 vtn_assert(val
->value_type
== vtn_value_type_pointer
);
1696 val
->pointer
= vtn_pointer_for_variable(b
, var
, ptr_type
);
1698 switch (var
->mode
) {
1699 case vtn_variable_mode_local
:
1700 case vtn_variable_mode_global
:
1701 case vtn_variable_mode_uniform
:
1702 /* For these, we create the variable normally */
1703 var
->var
= rzalloc(b
->shader
, nir_variable
);
1704 var
->var
->name
= ralloc_strdup(var
->var
, val
->name
);
1706 if (storage_class
== SpvStorageClassAtomicCounter
) {
1707 /* Need to tweak the nir type here as at vtn_handle_type we don't
1708 * have the access to storage_class, that is the one that points us
1709 * that is an atomic uint.
1711 var
->var
->type
= repair_atomic_type(var
->type
->type
);
1713 /* Private variables don't have any explicit layout but some layouts
1714 * may have leaked through due to type deduplication in the SPIR-V.
1716 var
->var
->type
= glsl_get_bare_type(var
->type
->type
);
1718 var
->var
->data
.mode
= nir_mode
;
1719 var
->var
->data
.location
= -1;
1720 var
->var
->interface_type
= NULL
;
1723 case vtn_variable_mode_workgroup
:
1724 if (b
->options
->lower_workgroup_access_to_offsets
) {
1725 var
->shared_location
= -1;
1727 /* Create the variable normally */
1728 var
->var
= rzalloc(b
->shader
, nir_variable
);
1729 var
->var
->name
= ralloc_strdup(var
->var
, val
->name
);
1730 /* Workgroup variables don't have any explicit layout but some
1731 * layouts may have leaked through due to type deduplication in the
1734 var
->var
->type
= glsl_get_bare_type(var
->type
->type
);
1735 var
->var
->data
.mode
= nir_var_shared
;
1739 case vtn_variable_mode_input
:
1740 case vtn_variable_mode_output
: {
1741 /* In order to know whether or not we're a per-vertex inout, we need
1742 * the patch qualifier. This means walking the variable decorations
1743 * early before we actually create any variables. Not a big deal.
1745 * GLSLang really likes to place decorations in the most interior
1746 * thing it possibly can. In particular, if you have a struct, it
1747 * will place the patch decorations on the struct members. This
1748 * should be handled by the variable splitting below just fine.
1750 * If you have an array-of-struct, things get even more weird as it
1751 * will place the patch decorations on the struct even though it's
1752 * inside an array and some of the members being patch and others not
1753 * makes no sense whatsoever. Since the only sensible thing is for
1754 * it to be all or nothing, we'll call it patch if any of the members
1755 * are declared patch.
1758 vtn_foreach_decoration(b
, val
, var_is_patch_cb
, &var
->patch
);
1759 if (glsl_type_is_array(var
->type
->type
) &&
1760 glsl_type_is_struct(without_array
->type
)) {
1761 vtn_foreach_decoration(b
, vtn_value(b
, without_array
->id
,
1762 vtn_value_type_type
),
1763 var_is_patch_cb
, &var
->patch
);
1766 /* For inputs and outputs, we immediately split structures. This
1767 * is for a couple of reasons. For one, builtins may all come in
1768 * a struct and we really want those split out into separate
1769 * variables. For another, interpolation qualifiers can be
1770 * applied to members of the top-level struct ane we need to be
1771 * able to preserve that information.
1774 struct vtn_type
*interface_type
= var
->type
;
1775 if (is_per_vertex_inout(var
, b
->shader
->info
.stage
)) {
1776 /* In Geometry shaders (and some tessellation), inputs come
1777 * in per-vertex arrays. However, some builtins come in
1778 * non-per-vertex, hence the need for the is_array check. In
1779 * any case, there are no non-builtin arrays allowed so this
1780 * check should be sufficient.
1782 interface_type
= var
->type
->array_element
;
1785 var
->var
= rzalloc(b
->shader
, nir_variable
);
1786 var
->var
->name
= ralloc_strdup(var
->var
, val
->name
);
1787 /* In Vulkan, shader I/O variables don't have any explicit layout but
1788 * some layouts may have leaked through due to type deduplication in
1791 var
->var
->type
= glsl_get_bare_type(var
->type
->type
);
1792 var
->var
->interface_type
= interface_type
->type
;
1793 var
->var
->data
.mode
= nir_mode
;
1794 var
->var
->data
.patch
= var
->patch
;
1796 if (glsl_type_is_struct(interface_type
->type
)) {
1797 /* It's a struct. Set it up as per-member. */
1798 var
->var
->num_members
= glsl_get_length(interface_type
->type
);
1799 var
->var
->members
= rzalloc_array(var
->var
, struct nir_variable_data
,
1800 var
->var
->num_members
);
1802 for (unsigned i
= 0; i
< var
->var
->num_members
; i
++) {
1803 var
->var
->members
[i
].mode
= nir_mode
;
1804 var
->var
->members
[i
].patch
= var
->patch
;
1808 /* For inputs and outputs, we need to grab locations and builtin
1809 * information from the interface type.
1811 vtn_foreach_decoration(b
, vtn_value(b
, interface_type
->id
,
1812 vtn_value_type_type
),
1813 var_decoration_cb
, var
);
1817 case vtn_variable_mode_ubo
:
1818 case vtn_variable_mode_ssbo
:
1819 case vtn_variable_mode_push_constant
:
1820 /* These don't need actual variables. */
1825 var
->var
->constant_initializer
=
1826 nir_constant_clone(initializer
, var
->var
);
1829 vtn_foreach_decoration(b
, val
, var_decoration_cb
, var
);
1831 if (var
->mode
== vtn_variable_mode_uniform
) {
1832 /* XXX: We still need the binding information in the nir_variable
1833 * for these. We should fix that.
1835 var
->var
->data
.binding
= var
->binding
;
1836 var
->var
->data
.explicit_binding
= var
->explicit_binding
;
1837 var
->var
->data
.descriptor_set
= var
->descriptor_set
;
1838 var
->var
->data
.index
= var
->input_attachment_index
;
1839 var
->var
->data
.offset
= var
->offset
;
1841 if (glsl_type_is_image(without_array
->type
))
1842 var
->var
->data
.image
.format
= without_array
->image_format
;
1845 if (var
->mode
== vtn_variable_mode_local
) {
1846 vtn_assert(var
->var
!= NULL
&& var
->var
->members
== NULL
);
1847 nir_function_impl_add_variable(b
->nb
.impl
, var
->var
);
1848 } else if (var
->var
) {
1849 nir_shader_add_variable(b
->shader
, var
->var
);
1851 vtn_assert(vtn_pointer_is_external_block(b
, val
->pointer
));
1856 vtn_assert_types_equal(struct vtn_builder
*b
, SpvOp opcode
,
1857 struct vtn_type
*dst_type
,
1858 struct vtn_type
*src_type
)
1860 if (dst_type
->id
== src_type
->id
)
1863 if (vtn_types_compatible(b
, dst_type
, src_type
)) {
1864 /* Early versions of GLSLang would re-emit types unnecessarily and you
1865 * would end up with OpLoad, OpStore, or OpCopyMemory opcodes which have
1866 * mismatched source and destination types.
1868 * https://github.com/KhronosGroup/glslang/issues/304
1869 * https://github.com/KhronosGroup/glslang/issues/307
1870 * https://bugs.freedesktop.org/show_bug.cgi?id=104338
1871 * https://bugs.freedesktop.org/show_bug.cgi?id=104424
1873 vtn_warn("Source and destination types of %s do not have the same "
1874 "ID (but are compatible): %u vs %u",
1875 spirv_op_to_string(opcode
), dst_type
->id
, src_type
->id
);
1879 vtn_fail("Source and destination types of %s do not match: %s vs. %s",
1880 spirv_op_to_string(opcode
),
1881 glsl_get_type_name(dst_type
->type
),
1882 glsl_get_type_name(src_type
->type
));
1886 vtn_handle_variables(struct vtn_builder
*b
, SpvOp opcode
,
1887 const uint32_t *w
, unsigned count
)
1891 struct vtn_value
*val
= vtn_push_value(b
, w
[2], vtn_value_type_undef
);
1892 val
->type
= vtn_value(b
, w
[1], vtn_value_type_type
)->type
;
1896 case SpvOpVariable
: {
1897 struct vtn_type
*ptr_type
= vtn_value(b
, w
[1], vtn_value_type_type
)->type
;
1899 struct vtn_value
*val
= vtn_push_value(b
, w
[2], vtn_value_type_pointer
);
1901 SpvStorageClass storage_class
= w
[3];
1902 nir_constant
*initializer
= NULL
;
1904 initializer
= vtn_value(b
, w
[4], vtn_value_type_constant
)->constant
;
1906 vtn_create_variable(b
, val
, ptr_type
, storage_class
, initializer
);
1910 case SpvOpAccessChain
:
1911 case SpvOpPtrAccessChain
:
1912 case SpvOpInBoundsAccessChain
: {
1913 struct vtn_access_chain
*chain
= vtn_access_chain_create(b
, count
- 4);
1914 chain
->ptr_as_array
= (opcode
== SpvOpPtrAccessChain
);
1917 for (int i
= 4; i
< count
; i
++) {
1918 struct vtn_value
*link_val
= vtn_untyped_value(b
, w
[i
]);
1919 if (link_val
->value_type
== vtn_value_type_constant
) {
1920 chain
->link
[idx
].mode
= vtn_access_mode_literal
;
1921 switch (glsl_get_bit_size(link_val
->type
->type
)) {
1923 chain
->link
[idx
].id
= link_val
->constant
->values
[0].i8
[0];
1926 chain
->link
[idx
].id
= link_val
->constant
->values
[0].i16
[0];
1929 chain
->link
[idx
].id
= link_val
->constant
->values
[0].i32
[0];
1932 chain
->link
[idx
].id
= link_val
->constant
->values
[0].i64
[0];
1935 vtn_fail("Invalid bit size");
1938 chain
->link
[idx
].mode
= vtn_access_mode_id
;
1939 chain
->link
[idx
].id
= w
[i
];
1945 struct vtn_type
*ptr_type
= vtn_value(b
, w
[1], vtn_value_type_type
)->type
;
1946 struct vtn_value
*base_val
= vtn_untyped_value(b
, w
[3]);
1947 if (base_val
->value_type
== vtn_value_type_sampled_image
) {
1948 /* This is rather insane. SPIR-V allows you to use OpSampledImage
1949 * to combine an array of images with a single sampler to get an
1950 * array of sampled images that all share the same sampler.
1951 * Fortunately, this means that we can more-or-less ignore the
1952 * sampler when crawling the access chain, but it does leave us
1953 * with this rather awkward little special-case.
1955 struct vtn_value
*val
=
1956 vtn_push_value(b
, w
[2], vtn_value_type_sampled_image
);
1957 val
->sampled_image
= ralloc(b
, struct vtn_sampled_image
);
1958 val
->sampled_image
->type
= base_val
->sampled_image
->type
;
1959 val
->sampled_image
->image
=
1960 vtn_pointer_dereference(b
, base_val
->sampled_image
->image
, chain
);
1961 val
->sampled_image
->sampler
= base_val
->sampled_image
->sampler
;
1963 vtn_assert(base_val
->value_type
== vtn_value_type_pointer
);
1964 struct vtn_value
*val
=
1965 vtn_push_value(b
, w
[2], vtn_value_type_pointer
);
1966 val
->pointer
= vtn_pointer_dereference(b
, base_val
->pointer
, chain
);
1967 val
->pointer
->ptr_type
= ptr_type
;
1972 case SpvOpCopyMemory
: {
1973 struct vtn_value
*dest
= vtn_value(b
, w
[1], vtn_value_type_pointer
);
1974 struct vtn_value
*src
= vtn_value(b
, w
[2], vtn_value_type_pointer
);
1976 vtn_assert_types_equal(b
, opcode
, dest
->type
->deref
, src
->type
->deref
);
1978 vtn_variable_copy(b
, dest
->pointer
, src
->pointer
);
1983 struct vtn_type
*res_type
=
1984 vtn_value(b
, w
[1], vtn_value_type_type
)->type
;
1985 struct vtn_value
*src_val
= vtn_value(b
, w
[3], vtn_value_type_pointer
);
1986 struct vtn_pointer
*src
= src_val
->pointer
;
1988 vtn_assert_types_equal(b
, opcode
, res_type
, src_val
->type
->deref
);
1990 if (glsl_type_is_image(res_type
->type
) ||
1991 glsl_type_is_sampler(res_type
->type
)) {
1992 vtn_push_value(b
, w
[2], vtn_value_type_pointer
)->pointer
= src
;
1996 vtn_push_ssa(b
, w
[2], res_type
, vtn_variable_load(b
, src
));
2001 struct vtn_value
*dest_val
= vtn_value(b
, w
[1], vtn_value_type_pointer
);
2002 struct vtn_pointer
*dest
= dest_val
->pointer
;
2003 struct vtn_value
*src_val
= vtn_untyped_value(b
, w
[2]);
2005 /* OpStore requires us to actually have a storage type */
2006 vtn_fail_if(dest
->type
->type
== NULL
,
2007 "Invalid destination type for OpStore");
2009 if (glsl_get_base_type(dest
->type
->type
) == GLSL_TYPE_BOOL
&&
2010 glsl_get_base_type(src_val
->type
->type
) == GLSL_TYPE_UINT
) {
2011 /* Early versions of GLSLang would use uint types for UBOs/SSBOs but
2012 * would then store them to a local variable as bool. Work around
2013 * the issue by doing an implicit conversion.
2015 * https://github.com/KhronosGroup/glslang/issues/170
2016 * https://bugs.freedesktop.org/show_bug.cgi?id=104424
2018 vtn_warn("OpStore of value of type OpTypeInt to a pointer to type "
2019 "OpTypeBool. Doing an implicit conversion to work around "
2021 struct vtn_ssa_value
*bool_ssa
=
2022 vtn_create_ssa_value(b
, dest
->type
->type
);
2023 bool_ssa
->def
= nir_i2b(&b
->nb
, vtn_ssa_value(b
, w
[2])->def
);
2024 vtn_variable_store(b
, bool_ssa
, dest
);
2028 vtn_assert_types_equal(b
, opcode
, dest_val
->type
->deref
, src_val
->type
);
2030 if (glsl_type_is_sampler(dest
->type
->type
)) {
2031 vtn_warn("OpStore of a sampler detected. Doing on-the-fly copy "
2032 "propagation to workaround the problem.");
2033 vtn_assert(dest
->var
->copy_prop_sampler
== NULL
);
2034 dest
->var
->copy_prop_sampler
=
2035 vtn_value(b
, w
[2], vtn_value_type_pointer
)->pointer
;
2039 struct vtn_ssa_value
*src
= vtn_ssa_value(b
, w
[2]);
2040 vtn_variable_store(b
, src
, dest
);
2044 case SpvOpArrayLength
: {
2045 struct vtn_pointer
*ptr
=
2046 vtn_value(b
, w
[3], vtn_value_type_pointer
)->pointer
;
2048 const uint32_t offset
= ptr
->var
->type
->offsets
[w
[4]];
2049 const uint32_t stride
= ptr
->var
->type
->members
[w
[4]]->stride
;
2051 if (!ptr
->block_index
) {
2052 struct vtn_access_chain chain
= {
2055 ptr
= vtn_ssa_offset_pointer_dereference(b
, ptr
, &chain
);
2056 vtn_assert(ptr
->block_index
);
2059 nir_intrinsic_instr
*instr
=
2060 nir_intrinsic_instr_create(b
->nb
.shader
,
2061 nir_intrinsic_get_buffer_size
);
2062 instr
->src
[0] = nir_src_for_ssa(ptr
->block_index
);
2063 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
2064 nir_builder_instr_insert(&b
->nb
, &instr
->instr
);
2065 nir_ssa_def
*buf_size
= &instr
->dest
.ssa
;
2067 /* array_length = max(buffer_size - offset, 0) / stride */
2068 nir_ssa_def
*array_length
=
2073 nir_imm_int(&b
->nb
, offset
)),
2074 nir_imm_int(&b
->nb
, 0u)),
2075 nir_imm_int(&b
->nb
, stride
));
2077 struct vtn_value
*val
= vtn_push_value(b
, w
[2], vtn_value_type_ssa
);
2078 val
->ssa
= vtn_create_ssa_value(b
, glsl_uint_type());
2079 val
->ssa
->def
= array_length
;
2083 case SpvOpCopyMemorySized
:
2085 vtn_fail("Unhandled opcode");