2 * Copyright © 2014 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 * Connor Abbott (cwabbott0@gmail.com)
28 #include "glsl_to_nir.h"
29 #include "ir_visitor.h"
30 #include "ir_hierarchical_visitor.h"
32 #include "compiler/nir/nir_control_flow.h"
33 #include "compiler/nir/nir_builder.h"
34 #include "main/imports.h"
37 * pass to lower GLSL IR to NIR
39 * This will lower variable dereferences to loads/stores of corresponding
40 * variables in NIR - the variables will be converted to registers in a later
46 class nir_visitor
: public ir_visitor
49 nir_visitor(nir_shader
*shader
);
52 virtual void visit(ir_variable
*);
53 virtual void visit(ir_function
*);
54 virtual void visit(ir_function_signature
*);
55 virtual void visit(ir_loop
*);
56 virtual void visit(ir_if
*);
57 virtual void visit(ir_discard
*);
58 virtual void visit(ir_loop_jump
*);
59 virtual void visit(ir_return
*);
60 virtual void visit(ir_call
*);
61 virtual void visit(ir_assignment
*);
62 virtual void visit(ir_emit_vertex
*);
63 virtual void visit(ir_end_primitive
*);
64 virtual void visit(ir_expression
*);
65 virtual void visit(ir_swizzle
*);
66 virtual void visit(ir_texture
*);
67 virtual void visit(ir_constant
*);
68 virtual void visit(ir_dereference_variable
*);
69 virtual void visit(ir_dereference_record
*);
70 virtual void visit(ir_dereference_array
*);
71 virtual void visit(ir_barrier
*);
73 void create_function(ir_function_signature
*ir
);
76 void add_instr(nir_instr
*instr
, unsigned num_components
, unsigned bit_size
);
77 nir_ssa_def
*evaluate_rvalue(ir_rvalue
*ir
);
79 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
**srcs
);
80 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
);
81 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
83 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
84 nir_ssa_def
*src2
, nir_ssa_def
*src3
);
89 nir_function_impl
*impl
;
91 nir_ssa_def
*result
; /* result of the expression tree last visited */
93 nir_deref_var
*evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
);
95 /* the head of the dereference chain we're creating */
96 nir_deref_var
*deref_head
;
97 /* the tail of the dereference chain we're creating */
98 nir_deref
*deref_tail
;
100 nir_variable
*var
; /* variable created by ir_variable visitor */
102 /* whether the IR we're operating on is per-function or global */
105 /* map of ir_variable -> nir_variable */
106 struct hash_table
*var_table
;
108 /* map of ir_function_signature -> nir_function_overload */
109 struct hash_table
*overload_table
;
113 * This visitor runs before the main visitor, calling create_function() for
114 * each function so that the main visitor can resolve forward references in
118 class nir_function_visitor
: public ir_hierarchical_visitor
121 nir_function_visitor(nir_visitor
*v
) : visitor(v
)
124 virtual ir_visitor_status
visit_enter(ir_function
*);
127 nir_visitor
*visitor
;
130 } /* end of anonymous namespace */
133 nir_remap_attributes(nir_shader
*shader
)
135 nir_foreach_variable(var
, &shader
->inputs
) {
136 var
->data
.location
+= _mesa_bitcount_64(shader
->info
.vs
.double_inputs
&
137 BITFIELD64_MASK(var
->data
.location
));
140 /* Once the remap is done, reset double_inputs_read, so later it will have
141 * which location/slots are doubles */
142 shader
->info
.vs
.double_inputs
= 0;
146 glsl_to_nir(const struct gl_shader_program
*shader_prog
,
147 gl_shader_stage stage
,
148 const nir_shader_compiler_options
*options
)
150 struct gl_linked_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
152 nir_shader
*shader
= nir_shader_create(NULL
, stage
, options
,
155 nir_visitor
v1(shader
);
156 nir_function_visitor
v2(&v1
);
158 visit_exec_list(sh
->ir
, &v1
);
160 nir_lower_constant_initializers(shader
, (nir_variable_mode
)~0);
162 /* Remap the locations to slots so those requiring two slots will occupy
163 * two locations. For instance, if we have in the IR code a dvec3 attr0 in
164 * location 0 and vec4 attr1 in location 1, in NIR attr0 will use
165 * locations/slots 0 and 1, and attr1 will use location/slot 2 */
166 if (shader
->info
.stage
== MESA_SHADER_VERTEX
)
167 nir_remap_attributes(shader
);
169 shader
->info
.name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
170 if (shader_prog
->Label
)
171 shader
->info
.label
= ralloc_strdup(shader
, shader_prog
->Label
);
173 /* Check for transform feedback varyings specified via the API */
174 shader
->info
.has_transform_feedback_varyings
=
175 shader_prog
->TransformFeedback
.NumVarying
> 0;
177 /* Check for transform feedback varyings specified in the Shader */
178 if (shader_prog
->last_vert_prog
)
179 shader
->info
.has_transform_feedback_varyings
|=
180 shader_prog
->last_vert_prog
->sh
.LinkedTransformFeedback
->NumVarying
> 0;
185 nir_visitor::nir_visitor(nir_shader
*shader
)
187 this->supports_ints
= shader
->options
->native_integers
;
188 this->shader
= shader
;
189 this->is_global
= true;
190 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
191 _mesa_key_pointer_equal
);
192 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
193 _mesa_key_pointer_equal
);
197 this->deref_head
= NULL
;
198 this->deref_tail
= NULL
;
199 memset(&this->b
, 0, sizeof(this->b
));
202 nir_visitor::~nir_visitor()
204 _mesa_hash_table_destroy(this->var_table
, NULL
);
205 _mesa_hash_table_destroy(this->overload_table
, NULL
);
209 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
212 ralloc_steal(mem_ctx
, this->deref_head
);
213 return this->deref_head
;
216 static nir_constant
*
217 constant_copy(ir_constant
*ir
, void *mem_ctx
)
222 nir_constant
*ret
= rzalloc(mem_ctx
, nir_constant
);
224 const unsigned rows
= ir
->type
->vector_elements
;
225 const unsigned cols
= ir
->type
->matrix_columns
;
228 ret
->num_elements
= 0;
229 switch (ir
->type
->base_type
) {
231 /* Only float base types can be matrices. */
234 for (unsigned r
= 0; r
< rows
; r
++)
235 ret
->values
[0].u32
[r
] = ir
->value
.u
[r
];
240 /* Only float base types can be matrices. */
243 for (unsigned r
= 0; r
< rows
; r
++)
244 ret
->values
[0].i32
[r
] = ir
->value
.i
[r
];
248 case GLSL_TYPE_FLOAT
:
249 for (unsigned c
= 0; c
< cols
; c
++) {
250 for (unsigned r
= 0; r
< rows
; r
++)
251 ret
->values
[c
].f32
[r
] = ir
->value
.f
[c
* rows
+ r
];
255 case GLSL_TYPE_DOUBLE
:
256 for (unsigned c
= 0; c
< cols
; c
++) {
257 for (unsigned r
= 0; r
< rows
; r
++)
258 ret
->values
[c
].f64
[r
] = ir
->value
.d
[c
* rows
+ r
];
262 case GLSL_TYPE_UINT64
:
263 /* Only float base types can be matrices. */
266 for (unsigned r
= 0; r
< rows
; r
++)
267 ret
->values
[0].u64
[r
] = ir
->value
.u64
[r
];
270 case GLSL_TYPE_INT64
:
271 /* Only float base types can be matrices. */
274 for (unsigned r
= 0; r
< rows
; r
++)
275 ret
->values
[0].i64
[r
] = ir
->value
.i64
[r
];
279 /* Only float base types can be matrices. */
282 for (unsigned r
= 0; r
< rows
; r
++)
283 ret
->values
[0].u32
[r
] = ir
->value
.b
[r
] ? NIR_TRUE
: NIR_FALSE
;
287 case GLSL_TYPE_STRUCT
:
288 case GLSL_TYPE_ARRAY
:
289 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
291 ret
->num_elements
= ir
->type
->length
;
293 for (i
= 0; i
< ir
->type
->length
; i
++)
294 ret
->elements
[i
] = constant_copy(ir
->const_elements
[i
], mem_ctx
);
298 unreachable("not reached");
305 nir_visitor::visit(ir_variable
*ir
)
307 /* TODO: In future we should switch to using the NIR lowering pass but for
308 * now just ignore these variables as GLSL IR should have lowered them.
309 * Anything remaining are just dead vars that weren't cleaned up.
311 if (ir
->data
.mode
== ir_var_shader_shared
)
314 nir_variable
*var
= rzalloc(shader
, nir_variable
);
315 var
->type
= ir
->type
;
316 var
->name
= ralloc_strdup(var
, ir
->name
);
318 var
->data
.always_active_io
= ir
->data
.always_active_io
;
319 var
->data
.read_only
= ir
->data
.read_only
;
320 var
->data
.centroid
= ir
->data
.centroid
;
321 var
->data
.sample
= ir
->data
.sample
;
322 var
->data
.patch
= ir
->data
.patch
;
323 var
->data
.invariant
= ir
->data
.invariant
;
324 var
->data
.location
= ir
->data
.location
;
325 var
->data
.stream
= ir
->data
.stream
;
326 var
->data
.compact
= false;
328 switch(ir
->data
.mode
) {
330 case ir_var_temporary
:
332 var
->data
.mode
= nir_var_global
;
334 var
->data
.mode
= nir_var_local
;
337 case ir_var_function_in
:
338 case ir_var_function_out
:
339 case ir_var_function_inout
:
340 case ir_var_const_in
:
341 var
->data
.mode
= nir_var_local
;
344 case ir_var_shader_in
:
345 if (shader
->info
.stage
== MESA_SHADER_FRAGMENT
&&
346 ir
->data
.location
== VARYING_SLOT_FACE
) {
347 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
348 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
349 var
->data
.mode
= nir_var_system_value
;
350 } else if (shader
->info
.stage
== MESA_SHADER_GEOMETRY
&&
351 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
352 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
353 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
354 var
->data
.mode
= nir_var_system_value
;
356 var
->data
.mode
= nir_var_shader_in
;
358 if (shader
->info
.stage
== MESA_SHADER_TESS_EVAL
&&
359 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
360 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
361 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
365 /* Mark all the locations that require two slots */
366 if (shader
->info
.stage
== MESA_SHADER_VERTEX
&&
367 glsl_type_is_dual_slot(glsl_without_array(var
->type
))) {
368 for (uint i
= 0; i
< glsl_count_attribute_slots(var
->type
, true); i
++) {
369 uint64_t bitfield
= BITFIELD64_BIT(var
->data
.location
+ i
);
370 shader
->info
.vs
.double_inputs
|= bitfield
;
375 case ir_var_shader_out
:
376 var
->data
.mode
= nir_var_shader_out
;
377 if (shader
->info
.stage
== MESA_SHADER_TESS_CTRL
&&
378 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
379 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
380 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
385 var
->data
.mode
= nir_var_uniform
;
388 case ir_var_shader_storage
:
389 var
->data
.mode
= nir_var_shader_storage
;
392 case ir_var_system_value
:
393 var
->data
.mode
= nir_var_system_value
;
397 unreachable("not reached");
400 var
->data
.interpolation
= ir
->data
.interpolation
;
401 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
402 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
403 var
->data
.location_frac
= ir
->data
.location_frac
;
405 switch (ir
->data
.depth_layout
) {
406 case ir_depth_layout_none
:
407 var
->data
.depth_layout
= nir_depth_layout_none
;
409 case ir_depth_layout_any
:
410 var
->data
.depth_layout
= nir_depth_layout_any
;
412 case ir_depth_layout_greater
:
413 var
->data
.depth_layout
= nir_depth_layout_greater
;
415 case ir_depth_layout_less
:
416 var
->data
.depth_layout
= nir_depth_layout_less
;
418 case ir_depth_layout_unchanged
:
419 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
422 unreachable("not reached");
425 var
->data
.index
= ir
->data
.index
;
426 var
->data
.descriptor_set
= 0;
427 var
->data
.binding
= ir
->data
.binding
;
428 var
->data
.offset
= ir
->data
.offset
;
429 var
->data
.image
.read_only
= ir
->data
.memory_read_only
;
430 var
->data
.image
.write_only
= ir
->data
.memory_write_only
;
431 var
->data
.image
.coherent
= ir
->data
.memory_coherent
;
432 var
->data
.image
._volatile
= ir
->data
.memory_volatile
;
433 var
->data
.image
.restrict_flag
= ir
->data
.memory_restrict
;
434 var
->data
.image
.format
= ir
->data
.image_format
;
435 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
437 var
->num_state_slots
= ir
->get_num_state_slots();
438 if (var
->num_state_slots
> 0) {
439 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
440 var
->num_state_slots
);
442 ir_state_slot
*state_slots
= ir
->get_state_slots();
443 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
444 for (unsigned j
= 0; j
< 5; j
++)
445 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
446 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
449 var
->state_slots
= NULL
;
452 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
454 var
->interface_type
= ir
->get_interface_type();
456 if (var
->data
.mode
== nir_var_local
)
457 nir_function_impl_add_variable(impl
, var
);
459 nir_shader_add_variable(shader
, var
);
461 _mesa_hash_table_insert(var_table
, ir
, var
);
466 nir_function_visitor::visit_enter(ir_function
*ir
)
468 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
469 visitor
->create_function(sig
);
471 return visit_continue_with_parent
;
475 nir_visitor::create_function(ir_function_signature
*ir
)
477 if (ir
->is_intrinsic())
480 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
482 assert(ir
->parameters
.is_empty());
483 assert(ir
->return_type
== glsl_type::void_type
);
485 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
489 nir_visitor::visit(ir_function
*ir
)
491 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
496 nir_visitor::visit(ir_function_signature
*ir
)
498 if (ir
->is_intrinsic())
501 struct hash_entry
*entry
=
502 _mesa_hash_table_search(this->overload_table
, ir
);
505 nir_function
*func
= (nir_function
*) entry
->data
;
507 if (ir
->is_defined
) {
508 nir_function_impl
*impl
= nir_function_impl_create(func
);
511 assert(strcmp(func
->name
, "main") == 0);
512 assert(ir
->parameters
.is_empty());
513 assert(func
->return_type
== glsl_type::void_type
);
515 this->is_global
= false;
517 nir_builder_init(&b
, impl
);
518 b
.cursor
= nir_after_cf_list(&impl
->body
);
519 visit_exec_list(&ir
->body
, this);
521 this->is_global
= true;
528 nir_visitor::visit(ir_loop
*ir
)
531 visit_exec_list(&ir
->body_instructions
, this);
532 nir_pop_loop(&b
, NULL
);
536 nir_visitor::visit(ir_if
*ir
)
538 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
539 visit_exec_list(&ir
->then_instructions
, this);
540 nir_push_else(&b
, NULL
);
541 visit_exec_list(&ir
->else_instructions
, this);
542 nir_pop_if(&b
, NULL
);
546 nir_visitor::visit(ir_discard
*ir
)
549 * discards aren't treated as control flow, because before we lower them
550 * they can appear anywhere in the shader and the stuff after them may still
551 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
552 * discards will be immediately followed by a return.
555 nir_intrinsic_instr
*discard
;
557 discard
= nir_intrinsic_instr_create(this->shader
,
558 nir_intrinsic_discard_if
);
560 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
562 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
565 nir_builder_instr_insert(&b
, &discard
->instr
);
569 nir_visitor::visit(ir_emit_vertex
*ir
)
571 nir_intrinsic_instr
*instr
=
572 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
573 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
574 nir_builder_instr_insert(&b
, &instr
->instr
);
578 nir_visitor::visit(ir_end_primitive
*ir
)
580 nir_intrinsic_instr
*instr
=
581 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
582 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
583 nir_builder_instr_insert(&b
, &instr
->instr
);
587 nir_visitor::visit(ir_loop_jump
*ir
)
591 case ir_loop_jump::jump_break
:
592 type
= nir_jump_break
;
594 case ir_loop_jump::jump_continue
:
595 type
= nir_jump_continue
;
598 unreachable("not reached");
601 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
602 nir_builder_instr_insert(&b
, &instr
->instr
);
606 nir_visitor::visit(ir_return
*ir
)
608 if (ir
->value
!= NULL
) {
609 nir_intrinsic_instr
*copy
=
610 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
612 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
613 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
616 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
617 nir_builder_instr_insert(&b
, &instr
->instr
);
621 nir_visitor::visit(ir_call
*ir
)
623 if (ir
->callee
->is_intrinsic()) {
626 switch (ir
->callee
->intrinsic_id
) {
627 case ir_intrinsic_atomic_counter_read
:
628 op
= nir_intrinsic_atomic_counter_read_var
;
630 case ir_intrinsic_atomic_counter_increment
:
631 op
= nir_intrinsic_atomic_counter_inc_var
;
633 case ir_intrinsic_atomic_counter_predecrement
:
634 op
= nir_intrinsic_atomic_counter_dec_var
;
636 case ir_intrinsic_atomic_counter_add
:
637 op
= nir_intrinsic_atomic_counter_add_var
;
639 case ir_intrinsic_atomic_counter_and
:
640 op
= nir_intrinsic_atomic_counter_and_var
;
642 case ir_intrinsic_atomic_counter_or
:
643 op
= nir_intrinsic_atomic_counter_or_var
;
645 case ir_intrinsic_atomic_counter_xor
:
646 op
= nir_intrinsic_atomic_counter_xor_var
;
648 case ir_intrinsic_atomic_counter_min
:
649 op
= nir_intrinsic_atomic_counter_min_var
;
651 case ir_intrinsic_atomic_counter_max
:
652 op
= nir_intrinsic_atomic_counter_max_var
;
654 case ir_intrinsic_atomic_counter_exchange
:
655 op
= nir_intrinsic_atomic_counter_exchange_var
;
657 case ir_intrinsic_atomic_counter_comp_swap
:
658 op
= nir_intrinsic_atomic_counter_comp_swap_var
;
660 case ir_intrinsic_image_load
:
661 op
= nir_intrinsic_image_load
;
663 case ir_intrinsic_image_store
:
664 op
= nir_intrinsic_image_store
;
666 case ir_intrinsic_image_atomic_add
:
667 op
= nir_intrinsic_image_atomic_add
;
669 case ir_intrinsic_image_atomic_min
:
670 op
= nir_intrinsic_image_atomic_min
;
672 case ir_intrinsic_image_atomic_max
:
673 op
= nir_intrinsic_image_atomic_max
;
675 case ir_intrinsic_image_atomic_and
:
676 op
= nir_intrinsic_image_atomic_and
;
678 case ir_intrinsic_image_atomic_or
:
679 op
= nir_intrinsic_image_atomic_or
;
681 case ir_intrinsic_image_atomic_xor
:
682 op
= nir_intrinsic_image_atomic_xor
;
684 case ir_intrinsic_image_atomic_exchange
:
685 op
= nir_intrinsic_image_atomic_exchange
;
687 case ir_intrinsic_image_atomic_comp_swap
:
688 op
= nir_intrinsic_image_atomic_comp_swap
;
690 case ir_intrinsic_memory_barrier
:
691 op
= nir_intrinsic_memory_barrier
;
693 case ir_intrinsic_image_size
:
694 op
= nir_intrinsic_image_size
;
696 case ir_intrinsic_image_samples
:
697 op
= nir_intrinsic_image_samples
;
699 case ir_intrinsic_ssbo_store
:
700 op
= nir_intrinsic_store_ssbo
;
702 case ir_intrinsic_ssbo_load
:
703 op
= nir_intrinsic_load_ssbo
;
705 case ir_intrinsic_ssbo_atomic_add
:
706 op
= nir_intrinsic_ssbo_atomic_add
;
708 case ir_intrinsic_ssbo_atomic_and
:
709 op
= nir_intrinsic_ssbo_atomic_and
;
711 case ir_intrinsic_ssbo_atomic_or
:
712 op
= nir_intrinsic_ssbo_atomic_or
;
714 case ir_intrinsic_ssbo_atomic_xor
:
715 op
= nir_intrinsic_ssbo_atomic_xor
;
717 case ir_intrinsic_ssbo_atomic_min
:
718 assert(ir
->return_deref
);
719 if (ir
->return_deref
->type
== glsl_type::int_type
)
720 op
= nir_intrinsic_ssbo_atomic_imin
;
721 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
722 op
= nir_intrinsic_ssbo_atomic_umin
;
724 unreachable("Invalid type");
726 case ir_intrinsic_ssbo_atomic_max
:
727 assert(ir
->return_deref
);
728 if (ir
->return_deref
->type
== glsl_type::int_type
)
729 op
= nir_intrinsic_ssbo_atomic_imax
;
730 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
731 op
= nir_intrinsic_ssbo_atomic_umax
;
733 unreachable("Invalid type");
735 case ir_intrinsic_ssbo_atomic_exchange
:
736 op
= nir_intrinsic_ssbo_atomic_exchange
;
738 case ir_intrinsic_ssbo_atomic_comp_swap
:
739 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
741 case ir_intrinsic_shader_clock
:
742 op
= nir_intrinsic_shader_clock
;
744 case ir_intrinsic_group_memory_barrier
:
745 op
= nir_intrinsic_group_memory_barrier
;
747 case ir_intrinsic_memory_barrier_atomic_counter
:
748 op
= nir_intrinsic_memory_barrier_atomic_counter
;
750 case ir_intrinsic_memory_barrier_buffer
:
751 op
= nir_intrinsic_memory_barrier_buffer
;
753 case ir_intrinsic_memory_barrier_image
:
754 op
= nir_intrinsic_memory_barrier_image
;
756 case ir_intrinsic_memory_barrier_shared
:
757 op
= nir_intrinsic_memory_barrier_shared
;
759 case ir_intrinsic_shared_load
:
760 op
= nir_intrinsic_load_shared
;
762 case ir_intrinsic_shared_store
:
763 op
= nir_intrinsic_store_shared
;
765 case ir_intrinsic_shared_atomic_add
:
766 op
= nir_intrinsic_shared_atomic_add
;
768 case ir_intrinsic_shared_atomic_and
:
769 op
= nir_intrinsic_shared_atomic_and
;
771 case ir_intrinsic_shared_atomic_or
:
772 op
= nir_intrinsic_shared_atomic_or
;
774 case ir_intrinsic_shared_atomic_xor
:
775 op
= nir_intrinsic_shared_atomic_xor
;
777 case ir_intrinsic_shared_atomic_min
:
778 assert(ir
->return_deref
);
779 if (ir
->return_deref
->type
== glsl_type::int_type
)
780 op
= nir_intrinsic_shared_atomic_imin
;
781 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
782 op
= nir_intrinsic_shared_atomic_umin
;
784 unreachable("Invalid type");
786 case ir_intrinsic_shared_atomic_max
:
787 assert(ir
->return_deref
);
788 if (ir
->return_deref
->type
== glsl_type::int_type
)
789 op
= nir_intrinsic_shared_atomic_imax
;
790 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
791 op
= nir_intrinsic_shared_atomic_umax
;
793 unreachable("Invalid type");
795 case ir_intrinsic_shared_atomic_exchange
:
796 op
= nir_intrinsic_shared_atomic_exchange
;
798 case ir_intrinsic_shared_atomic_comp_swap
:
799 op
= nir_intrinsic_shared_atomic_comp_swap
;
801 case ir_intrinsic_vote_any
:
802 op
= nir_intrinsic_vote_any
;
804 case ir_intrinsic_vote_all
:
805 op
= nir_intrinsic_vote_all
;
807 case ir_intrinsic_vote_eq
:
808 op
= nir_intrinsic_vote_eq
;
810 case ir_intrinsic_ballot
:
811 op
= nir_intrinsic_ballot
;
813 case ir_intrinsic_read_invocation
:
814 op
= nir_intrinsic_read_invocation
;
816 case ir_intrinsic_read_first_invocation
:
817 op
= nir_intrinsic_read_first_invocation
;
820 unreachable("not reached");
823 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
824 nir_dest
*dest
= &instr
->dest
;
827 case nir_intrinsic_atomic_counter_read_var
:
828 case nir_intrinsic_atomic_counter_inc_var
:
829 case nir_intrinsic_atomic_counter_dec_var
:
830 case nir_intrinsic_atomic_counter_add_var
:
831 case nir_intrinsic_atomic_counter_min_var
:
832 case nir_intrinsic_atomic_counter_max_var
:
833 case nir_intrinsic_atomic_counter_and_var
:
834 case nir_intrinsic_atomic_counter_or_var
:
835 case nir_intrinsic_atomic_counter_xor_var
:
836 case nir_intrinsic_atomic_counter_exchange_var
:
837 case nir_intrinsic_atomic_counter_comp_swap_var
: {
838 /* Set the counter variable dereference. */
839 exec_node
*param
= ir
->actual_parameters
.get_head();
840 ir_dereference
*counter
= (ir_dereference
*)param
;
842 instr
->variables
[0] = evaluate_deref(&instr
->instr
, counter
);
843 param
= param
->get_next();
845 /* Set the intrinsic destination. */
846 if (ir
->return_deref
) {
847 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
850 /* Set the intrinsic parameters. */
851 if (!param
->is_tail_sentinel()) {
853 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
854 param
= param
->get_next();
857 if (!param
->is_tail_sentinel()) {
859 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
860 param
= param
->get_next();
863 nir_builder_instr_insert(&b
, &instr
->instr
);
866 case nir_intrinsic_image_load
:
867 case nir_intrinsic_image_store
:
868 case nir_intrinsic_image_atomic_add
:
869 case nir_intrinsic_image_atomic_min
:
870 case nir_intrinsic_image_atomic_max
:
871 case nir_intrinsic_image_atomic_and
:
872 case nir_intrinsic_image_atomic_or
:
873 case nir_intrinsic_image_atomic_xor
:
874 case nir_intrinsic_image_atomic_exchange
:
875 case nir_intrinsic_image_atomic_comp_swap
:
876 case nir_intrinsic_image_samples
:
877 case nir_intrinsic_image_size
: {
878 nir_ssa_undef_instr
*instr_undef
=
879 nir_ssa_undef_instr_create(shader
, 1, 32);
880 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
882 /* Set the image variable dereference. */
883 exec_node
*param
= ir
->actual_parameters
.get_head();
884 ir_dereference
*image
= (ir_dereference
*)param
;
885 const glsl_type
*type
=
886 image
->variable_referenced()->type
->without_array();
888 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
889 param
= param
->get_next();
891 /* Set the intrinsic destination. */
892 if (ir
->return_deref
) {
893 unsigned num_components
= ir
->return_deref
->type
->vector_elements
;
894 if (instr
->intrinsic
== nir_intrinsic_image_size
)
895 instr
->num_components
= num_components
;
896 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
897 num_components
, 32, NULL
);
900 if (op
== nir_intrinsic_image_size
||
901 op
== nir_intrinsic_image_samples
) {
902 nir_builder_instr_insert(&b
, &instr
->instr
);
906 /* Set the address argument, extending the coordinate vector to four
909 nir_ssa_def
*src_addr
=
910 evaluate_rvalue((ir_dereference
*)param
);
911 nir_ssa_def
*srcs
[4];
913 for (int i
= 0; i
< 4; i
++) {
914 if (i
< type
->coordinate_components())
915 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
917 srcs
[i
] = &instr_undef
->def
;
920 instr
->src
[0] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
921 param
= param
->get_next();
923 /* Set the sample argument, which is undefined for single-sample
926 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
928 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
929 param
= param
->get_next();
931 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
934 /* Set the intrinsic parameters. */
935 if (!param
->is_tail_sentinel()) {
937 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
938 param
= param
->get_next();
941 if (!param
->is_tail_sentinel()) {
943 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
944 param
= param
->get_next();
946 nir_builder_instr_insert(&b
, &instr
->instr
);
949 case nir_intrinsic_memory_barrier
:
950 case nir_intrinsic_group_memory_barrier
:
951 case nir_intrinsic_memory_barrier_atomic_counter
:
952 case nir_intrinsic_memory_barrier_buffer
:
953 case nir_intrinsic_memory_barrier_image
:
954 case nir_intrinsic_memory_barrier_shared
:
955 nir_builder_instr_insert(&b
, &instr
->instr
);
957 case nir_intrinsic_shader_clock
:
958 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 2, 32, NULL
);
959 instr
->num_components
= 2;
960 nir_builder_instr_insert(&b
, &instr
->instr
);
962 case nir_intrinsic_store_ssbo
: {
963 exec_node
*param
= ir
->actual_parameters
.get_head();
964 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
966 param
= param
->get_next();
967 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
969 param
= param
->get_next();
970 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
972 param
= param
->get_next();
973 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
976 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
977 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
978 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
979 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
980 instr
->num_components
= val
->type
->vector_elements
;
982 nir_builder_instr_insert(&b
, &instr
->instr
);
985 case nir_intrinsic_load_ssbo
: {
986 exec_node
*param
= ir
->actual_parameters
.get_head();
987 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
989 param
= param
->get_next();
990 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
992 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
993 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
995 const glsl_type
*type
= ir
->return_deref
->var
->type
;
996 instr
->num_components
= type
->vector_elements
;
998 /* Setup destination register */
999 unsigned bit_size
= glsl_get_bit_size(type
);
1000 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1001 type
->vector_elements
, bit_size
, NULL
);
1003 /* Insert the created nir instruction now since in the case of boolean
1004 * result we will need to emit another instruction after it
1006 nir_builder_instr_insert(&b
, &instr
->instr
);
1009 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
1010 * consider a true boolean to be ~0. Fix this up with a != 0
1013 if (type
->is_boolean()) {
1014 nir_alu_instr
*load_ssbo_compare
=
1015 nir_alu_instr_create(shader
, nir_op_ine
);
1016 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
1017 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
1018 load_ssbo_compare
->src
[1].src
=
1019 nir_src_for_ssa(nir_imm_int(&b
, 0));
1020 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
1021 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
1022 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
1023 &load_ssbo_compare
->dest
.dest
,
1024 type
->vector_elements
, bit_size
, NULL
);
1025 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
1026 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
1027 dest
= &load_ssbo_compare
->dest
.dest
;
1031 case nir_intrinsic_ssbo_atomic_add
:
1032 case nir_intrinsic_ssbo_atomic_imin
:
1033 case nir_intrinsic_ssbo_atomic_umin
:
1034 case nir_intrinsic_ssbo_atomic_imax
:
1035 case nir_intrinsic_ssbo_atomic_umax
:
1036 case nir_intrinsic_ssbo_atomic_and
:
1037 case nir_intrinsic_ssbo_atomic_or
:
1038 case nir_intrinsic_ssbo_atomic_xor
:
1039 case nir_intrinsic_ssbo_atomic_exchange
:
1040 case nir_intrinsic_ssbo_atomic_comp_swap
: {
1041 int param_count
= ir
->actual_parameters
.length();
1042 assert(param_count
== 3 || param_count
== 4);
1045 exec_node
*param
= ir
->actual_parameters
.get_head();
1046 ir_instruction
*inst
= (ir_instruction
*) param
;
1047 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1050 param
= param
->get_next();
1051 inst
= (ir_instruction
*) param
;
1052 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1054 /* data1 parameter (this is always present) */
1055 param
= param
->get_next();
1056 inst
= (ir_instruction
*) param
;
1057 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1059 /* data2 parameter (only with atomic_comp_swap) */
1060 if (param_count
== 4) {
1061 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
1062 param
= param
->get_next();
1063 inst
= (ir_instruction
*) param
;
1064 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1068 assert(ir
->return_deref
);
1069 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1070 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1071 nir_builder_instr_insert(&b
, &instr
->instr
);
1074 case nir_intrinsic_load_shared
: {
1075 exec_node
*param
= ir
->actual_parameters
.get_head();
1076 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1078 nir_intrinsic_set_base(instr
, 0);
1079 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1081 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1082 instr
->num_components
= type
->vector_elements
;
1084 /* Setup destination register */
1085 unsigned bit_size
= glsl_get_bit_size(type
);
1086 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1087 type
->vector_elements
, bit_size
, NULL
);
1089 nir_builder_instr_insert(&b
, &instr
->instr
);
1092 case nir_intrinsic_store_shared
: {
1093 exec_node
*param
= ir
->actual_parameters
.get_head();
1094 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1096 param
= param
->get_next();
1097 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1099 param
= param
->get_next();
1100 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1103 nir_intrinsic_set_base(instr
, 0);
1104 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1106 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1108 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1109 instr
->num_components
= val
->type
->vector_elements
;
1111 nir_builder_instr_insert(&b
, &instr
->instr
);
1114 case nir_intrinsic_shared_atomic_add
:
1115 case nir_intrinsic_shared_atomic_imin
:
1116 case nir_intrinsic_shared_atomic_umin
:
1117 case nir_intrinsic_shared_atomic_imax
:
1118 case nir_intrinsic_shared_atomic_umax
:
1119 case nir_intrinsic_shared_atomic_and
:
1120 case nir_intrinsic_shared_atomic_or
:
1121 case nir_intrinsic_shared_atomic_xor
:
1122 case nir_intrinsic_shared_atomic_exchange
:
1123 case nir_intrinsic_shared_atomic_comp_swap
: {
1124 int param_count
= ir
->actual_parameters
.length();
1125 assert(param_count
== 2 || param_count
== 3);
1128 exec_node
*param
= ir
->actual_parameters
.get_head();
1129 ir_instruction
*inst
= (ir_instruction
*) param
;
1130 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1132 /* data1 parameter (this is always present) */
1133 param
= param
->get_next();
1134 inst
= (ir_instruction
*) param
;
1135 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1137 /* data2 parameter (only with atomic_comp_swap) */
1138 if (param_count
== 3) {
1139 assert(op
== nir_intrinsic_shared_atomic_comp_swap
);
1140 param
= param
->get_next();
1141 inst
= (ir_instruction
*) param
;
1143 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1147 assert(ir
->return_deref
);
1148 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1149 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1150 ir
->return_deref
->type
->vector_elements
,
1152 nir_builder_instr_insert(&b
, &instr
->instr
);
1155 case nir_intrinsic_vote_any
:
1156 case nir_intrinsic_vote_all
:
1157 case nir_intrinsic_vote_eq
: {
1158 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
1160 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1161 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1163 nir_builder_instr_insert(&b
, &instr
->instr
);
1167 case nir_intrinsic_ballot
: {
1168 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1169 ir
->return_deref
->type
->vector_elements
, 64, NULL
);
1170 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1172 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1173 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1175 nir_builder_instr_insert(&b
, &instr
->instr
);
1178 case nir_intrinsic_read_invocation
: {
1179 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1180 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1181 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1183 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1184 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1186 ir_rvalue
*invocation
= (ir_rvalue
*) ir
->actual_parameters
.get_head()->next
;
1187 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(invocation
));
1189 nir_builder_instr_insert(&b
, &instr
->instr
);
1192 case nir_intrinsic_read_first_invocation
: {
1193 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1194 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1195 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1197 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1198 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1200 nir_builder_instr_insert(&b
, &instr
->instr
);
1204 unreachable("not reached");
1207 if (ir
->return_deref
) {
1208 nir_intrinsic_instr
*store_instr
=
1209 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
1210 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1211 nir_intrinsic_set_write_mask(store_instr
,
1212 (1 << store_instr
->num_components
) - 1);
1214 store_instr
->variables
[0] =
1215 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
1216 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
1218 nir_builder_instr_insert(&b
, &store_instr
->instr
);
1224 struct hash_entry
*entry
=
1225 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1227 nir_function
*callee
= (nir_function
*) entry
->data
;
1229 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
1232 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
1233 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
1237 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
1238 nir_builder_instr_insert(&b
, &instr
->instr
);
1242 nir_visitor::visit(ir_assignment
*ir
)
1244 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1246 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1247 ir
->lhs
->variable_referenced()->data
.precise
;
1249 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1250 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1251 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1252 nir_intrinsic_instr
*copy
=
1253 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1255 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1256 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1258 if (ir
->condition
) {
1259 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1260 nir_builder_instr_insert(&b
, ©
->instr
);
1261 nir_pop_if(&b
, NULL
);
1263 nir_builder_instr_insert(&b
, ©
->instr
);
1268 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1270 ir
->lhs
->accept(this);
1271 nir_deref_var
*lhs_deref
= this->deref_head
;
1272 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1274 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1275 /* GLSL IR will give us the input to the write-masked assignment in a
1276 * single packed vector. So, for example, if the writemask is xzw, then
1277 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1281 unsigned component
= 0;
1282 for (unsigned i
= 0; i
< 4; i
++) {
1283 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1285 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1288 nir_intrinsic_instr
*store
=
1289 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1290 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1291 nir_intrinsic_set_write_mask(store
, ir
->write_mask
);
1292 store
->variables
[0] = nir_deref_var_clone(lhs_deref
, store
);
1293 store
->src
[0] = nir_src_for_ssa(src
);
1295 if (ir
->condition
) {
1296 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1297 nir_builder_instr_insert(&b
, &store
->instr
);
1298 nir_pop_if(&b
, NULL
);
1300 nir_builder_instr_insert(&b
, &store
->instr
);
1305 * Given an instruction, returns a pointer to its destination or NULL if there
1306 * is no destination.
1308 * Note that this only handles instructions we generate at this level.
1311 get_instr_dest(nir_instr
*instr
)
1313 nir_alu_instr
*alu_instr
;
1314 nir_intrinsic_instr
*intrinsic_instr
;
1315 nir_tex_instr
*tex_instr
;
1317 switch (instr
->type
) {
1318 case nir_instr_type_alu
:
1319 alu_instr
= nir_instr_as_alu(instr
);
1320 return &alu_instr
->dest
.dest
;
1322 case nir_instr_type_intrinsic
:
1323 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1324 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1325 return &intrinsic_instr
->dest
;
1329 case nir_instr_type_tex
:
1330 tex_instr
= nir_instr_as_tex(instr
);
1331 return &tex_instr
->dest
;
1334 unreachable("not reached");
1341 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1344 nir_dest
*dest
= get_instr_dest(instr
);
1347 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1349 nir_builder_instr_insert(&b
, instr
);
1352 assert(dest
->is_ssa
);
1353 this->result
= &dest
->ssa
;
1358 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1361 if (ir
->as_dereference() || ir
->as_constant()) {
1363 * A dereference is being used on the right hand side, which means we
1364 * must emit a variable load.
1367 nir_intrinsic_instr
*load_instr
=
1368 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1369 load_instr
->num_components
= ir
->type
->vector_elements
;
1370 load_instr
->variables
[0] = this->deref_head
;
1371 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1372 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1373 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
, bit_size
);
1376 return this->result
;
1380 type_is_float(glsl_base_type type
)
1382 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
||
1383 type
== GLSL_TYPE_FLOAT16
;
1387 type_is_signed(glsl_base_type type
)
1389 return type
== GLSL_TYPE_INT
|| type
== GLSL_TYPE_INT64
||
1390 type
== GLSL_TYPE_INT16
;
1394 nir_visitor::visit(ir_expression
*ir
)
1396 /* Some special cases */
1397 switch (ir
->operation
) {
1398 case ir_binop_ubo_load
: {
1399 nir_intrinsic_instr
*load
=
1400 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1401 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1402 load
->num_components
= ir
->type
->vector_elements
;
1403 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1404 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1405 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1408 * In UBO's, a true boolean value is any non-zero value, but we consider
1409 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1412 if (ir
->type
->is_boolean())
1413 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1418 case ir_unop_interpolate_at_centroid
:
1419 case ir_binop_interpolate_at_offset
:
1420 case ir_binop_interpolate_at_sample
: {
1421 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1422 ir_swizzle
*swizzle
= NULL
;
1424 /* the api does not allow a swizzle here, but the varying packing code
1425 * may have pushed one into here.
1427 swizzle
= ir
->operands
[0]->as_swizzle();
1429 deref
= swizzle
->val
->as_dereference();
1433 deref
->accept(this);
1435 nir_intrinsic_op op
;
1436 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1437 switch (ir
->operation
) {
1438 case ir_unop_interpolate_at_centroid
:
1439 op
= nir_intrinsic_interp_var_at_centroid
;
1441 case ir_binop_interpolate_at_offset
:
1442 op
= nir_intrinsic_interp_var_at_offset
;
1444 case ir_binop_interpolate_at_sample
:
1445 op
= nir_intrinsic_interp_var_at_sample
;
1448 unreachable("Invalid interpolation intrinsic");
1451 /* This case can happen if the vertex shader does not write the
1452 * given varying. In this case, the linker will lower it to a
1453 * global variable. Since interpolating a variable makes no
1454 * sense, we'll just turn it into a load which will probably
1455 * eventually end up as an SSA definition.
1457 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1458 op
= nir_intrinsic_load_var
;
1461 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1462 intrin
->num_components
= deref
->type
->vector_elements
;
1463 intrin
->variables
[0] = this->deref_head
;
1464 ralloc_steal(intrin
, intrin
->variables
[0]);
1466 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1467 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1468 intrin
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1470 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1471 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1474 unsigned swiz
[4] = {
1475 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1478 result
= nir_swizzle(&b
, result
, swiz
,
1479 swizzle
->type
->vector_elements
, false);
1489 nir_ssa_def
*srcs
[4];
1490 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1491 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1493 glsl_base_type types
[4];
1494 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1496 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1498 types
[i
] = GLSL_TYPE_FLOAT
;
1500 glsl_base_type out_type
;
1502 out_type
= ir
->type
->base_type
;
1504 out_type
= GLSL_TYPE_FLOAT
;
1506 switch (ir
->operation
) {
1507 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1508 case ir_unop_logic_not
:
1509 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1512 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1513 : nir_ineg(&b
, srcs
[0]);
1516 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1517 : nir_iabs(&b
, srcs
[0]);
1519 case ir_unop_saturate
:
1520 assert(type_is_float(types
[0]));
1521 result
= nir_fsat(&b
, srcs
[0]);
1524 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1525 : nir_isign(&b
, srcs
[0]);
1527 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1528 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1529 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1530 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1531 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1532 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1533 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1535 result
= supports_ints
? nir_i2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1538 result
= supports_ints
? nir_u2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1541 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1575 case ir_unop_i642u64
:
1576 case ir_unop_u642i64
: {
1577 nir_alu_type src_type
= nir_get_nir_type_for_glsl_base_type(types
[0]);
1578 nir_alu_type dst_type
= nir_get_nir_type_for_glsl_base_type(out_type
);
1579 result
= nir_build_alu(&b
, nir_type_conversion_op(src_type
, dst_type
,
1580 nir_rounding_mode_undef
),
1581 srcs
[0], NULL
, NULL
, NULL
);
1582 /* b2i and b2f don't have fixed bit-size versions so the builder will
1583 * just assume 32 and we have to fix it up here.
1585 result
->bit_size
= nir_alu_type_get_type_size(dst_type
);
1589 case ir_unop_bitcast_i2f
:
1590 case ir_unop_bitcast_f2i
:
1591 case ir_unop_bitcast_u2f
:
1592 case ir_unop_bitcast_f2u
:
1593 case ir_unop_bitcast_i642d
:
1594 case ir_unop_bitcast_d2i64
:
1595 case ir_unop_bitcast_u642d
:
1596 case ir_unop_bitcast_d2u64
:
1597 case ir_unop_subroutine_to_int
:
1599 result
= nir_imov(&b
, srcs
[0]);
1601 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1602 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1603 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1604 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1605 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1606 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1607 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1608 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1609 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1610 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1611 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1612 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1613 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1614 case ir_unop_pack_snorm_2x16
:
1615 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1617 case ir_unop_pack_snorm_4x8
:
1618 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1620 case ir_unop_pack_unorm_2x16
:
1621 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1623 case ir_unop_pack_unorm_4x8
:
1624 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1626 case ir_unop_pack_half_2x16
:
1627 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1629 case ir_unop_unpack_snorm_2x16
:
1630 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1632 case ir_unop_unpack_snorm_4x8
:
1633 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1635 case ir_unop_unpack_unorm_2x16
:
1636 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1638 case ir_unop_unpack_unorm_4x8
:
1639 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1641 case ir_unop_unpack_half_2x16
:
1642 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1644 case ir_unop_pack_sampler_2x32
:
1645 case ir_unop_pack_image_2x32
:
1646 case ir_unop_pack_double_2x32
:
1647 case ir_unop_pack_int_2x32
:
1648 case ir_unop_pack_uint_2x32
:
1649 result
= nir_pack_64_2x32(&b
, srcs
[0]);
1651 case ir_unop_unpack_sampler_2x32
:
1652 case ir_unop_unpack_image_2x32
:
1653 case ir_unop_unpack_double_2x32
:
1654 case ir_unop_unpack_int_2x32
:
1655 case ir_unop_unpack_uint_2x32
:
1656 result
= nir_unpack_64_2x32(&b
, srcs
[0]);
1658 case ir_unop_bitfield_reverse
:
1659 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1661 case ir_unop_bit_count
:
1662 result
= nir_bit_count(&b
, srcs
[0]);
1664 case ir_unop_find_msb
:
1666 case GLSL_TYPE_UINT
:
1667 result
= nir_ufind_msb(&b
, srcs
[0]);
1670 result
= nir_ifind_msb(&b
, srcs
[0]);
1673 unreachable("Invalid type for findMSB()");
1676 case ir_unop_find_lsb
:
1677 result
= nir_find_lsb(&b
, srcs
[0]);
1681 switch (ir
->type
->vector_elements
) {
1683 switch (ir
->operands
[0]->type
->vector_elements
) {
1684 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1685 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1686 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1687 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1688 default: unreachable("not reached");
1692 switch (ir
->operands
[0]->type
->vector_elements
) {
1693 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1694 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1695 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1696 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1697 default: unreachable("not reached");
1701 switch (ir
->operands
[0]->type
->vector_elements
) {
1702 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1703 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1704 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1705 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1706 default: unreachable("not reached");
1710 switch (ir
->operands
[0]->type
->vector_elements
) {
1711 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1712 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1713 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1714 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1715 default: unreachable("not reached");
1719 unreachable("not reached");
1722 case ir_unop_get_buffer_size
: {
1723 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1725 nir_intrinsic_get_buffer_size
);
1726 load
->num_components
= ir
->type
->vector_elements
;
1727 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1728 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1729 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1734 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1735 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1738 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1739 : nir_isub(&b
, srcs
[0], srcs
[1]);
1742 result
= type_is_float(out_type
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1743 : nir_imul(&b
, srcs
[0], srcs
[1]);
1746 if (type_is_float(out_type
))
1747 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1748 else if (type_is_signed(out_type
))
1749 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1751 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1754 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1755 : nir_umod(&b
, srcs
[0], srcs
[1]);
1758 if (type_is_float(out_type
))
1759 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1760 else if (type_is_signed(out_type
))
1761 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1763 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1766 if (type_is_float(out_type
))
1767 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1768 else if (type_is_signed(out_type
))
1769 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1771 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1773 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1774 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1775 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1776 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1777 case ir_binop_logic_and
:
1778 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1779 : nir_fand(&b
, srcs
[0], srcs
[1]);
1781 case ir_binop_logic_or
:
1782 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1783 : nir_for(&b
, srcs
[0], srcs
[1]);
1785 case ir_binop_logic_xor
:
1786 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1787 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1789 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1790 case ir_binop_rshift
:
1791 result
= (type_is_signed(out_type
)) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1792 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1794 case ir_binop_imul_high
:
1795 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1796 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1798 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1799 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1801 if (supports_ints
) {
1802 if (type_is_float(types
[0]))
1803 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1804 else if (type_is_signed(types
[0]))
1805 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1807 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1809 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1812 case ir_binop_gequal
:
1813 if (supports_ints
) {
1814 if (type_is_float(types
[0]))
1815 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1816 else if (type_is_signed(types
[0]))
1817 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1819 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1821 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1824 case ir_binop_equal
:
1825 if (supports_ints
) {
1826 if (type_is_float(types
[0]))
1827 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1829 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1831 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1834 case ir_binop_nequal
:
1835 if (supports_ints
) {
1836 if (type_is_float(types
[0]))
1837 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1839 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1841 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1844 case ir_binop_all_equal
:
1845 if (supports_ints
) {
1846 if (type_is_float(types
[0])) {
1847 switch (ir
->operands
[0]->type
->vector_elements
) {
1848 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1849 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1850 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1851 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1853 unreachable("not reached");
1856 switch (ir
->operands
[0]->type
->vector_elements
) {
1857 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1858 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1859 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1860 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1862 unreachable("not reached");
1866 switch (ir
->operands
[0]->type
->vector_elements
) {
1867 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1868 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1869 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1870 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1872 unreachable("not reached");
1876 case ir_binop_any_nequal
:
1877 if (supports_ints
) {
1878 if (type_is_float(types
[0])) {
1879 switch (ir
->operands
[0]->type
->vector_elements
) {
1880 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1881 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1882 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1883 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1885 unreachable("not reached");
1888 switch (ir
->operands
[0]->type
->vector_elements
) {
1889 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1890 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1891 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1892 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1894 unreachable("not reached");
1898 switch (ir
->operands
[0]->type
->vector_elements
) {
1899 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1900 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1901 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1902 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1904 unreachable("not reached");
1909 switch (ir
->operands
[0]->type
->vector_elements
) {
1910 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1911 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1912 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1914 unreachable("not reached");
1918 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1920 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1923 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1927 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1929 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1931 case ir_triop_bitfield_extract
:
1932 result
= (out_type
== GLSL_TYPE_INT
) ?
1933 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1934 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1936 case ir_quadop_bitfield_insert
:
1937 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1939 case ir_quadop_vector
:
1940 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1944 unreachable("not reached");
1949 nir_visitor::visit(ir_swizzle
*ir
)
1951 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1952 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1953 ir
->type
->vector_elements
, !supports_ints
);
1957 nir_visitor::visit(ir_texture
*ir
)
1964 num_srcs
= 1; /* coordinate */
1969 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1970 num_srcs
= 2; /* coordinate, bias/lod */
1974 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1980 if (ir
->lod_info
.lod
!= NULL
)
1981 num_srcs
= 2; /* coordinate, lod */
1983 num_srcs
= 1; /* coordinate */
1987 op
= nir_texop_txf_ms
;
1988 num_srcs
= 2; /* coordinate, sample_index */
1993 if (ir
->lod_info
.lod
!= NULL
)
1994 num_srcs
= 1; /* lod */
2001 num_srcs
= 1; /* coordinate */
2006 num_srcs
= 1; /* coordinate */
2009 case ir_query_levels
:
2010 op
= nir_texop_query_levels
;
2014 case ir_texture_samples
:
2015 op
= nir_texop_texture_samples
;
2019 case ir_samples_identical
:
2020 op
= nir_texop_samples_identical
;
2021 num_srcs
= 1; /* coordinate */
2025 unreachable("not reached");
2028 if (ir
->projector
!= NULL
)
2030 if (ir
->shadow_comparator
!= NULL
)
2032 if (ir
->offset
!= NULL
)
2035 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
2038 instr
->sampler_dim
=
2039 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
2040 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
2041 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
2042 if (instr
->is_shadow
)
2043 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
2044 switch (ir
->type
->base_type
) {
2045 case GLSL_TYPE_FLOAT
:
2046 instr
->dest_type
= nir_type_float
;
2049 instr
->dest_type
= nir_type_int
;
2051 case GLSL_TYPE_BOOL
:
2052 case GLSL_TYPE_UINT
:
2053 instr
->dest_type
= nir_type_uint
;
2056 unreachable("not reached");
2059 instr
->texture
= evaluate_deref(&instr
->instr
, ir
->sampler
);
2061 unsigned src_number
= 0;
2063 if (ir
->coordinate
!= NULL
) {
2064 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
2065 instr
->src
[src_number
].src
=
2066 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
2067 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2071 if (ir
->projector
!= NULL
) {
2072 instr
->src
[src_number
].src
=
2073 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
2074 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2078 if (ir
->shadow_comparator
!= NULL
) {
2079 instr
->src
[src_number
].src
=
2080 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparator
));
2081 instr
->src
[src_number
].src_type
= nir_tex_src_comparator
;
2085 if (ir
->offset
!= NULL
) {
2086 /* we don't support multiple offsets yet */
2087 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2089 instr
->src
[src_number
].src
=
2090 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
2091 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2097 instr
->src
[src_number
].src
=
2098 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
2099 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2106 if (ir
->lod_info
.lod
!= NULL
) {
2107 instr
->src
[src_number
].src
=
2108 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
2109 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2115 instr
->src
[src_number
].src
=
2116 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
2117 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2119 instr
->src
[src_number
].src
=
2120 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
2121 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2126 instr
->src
[src_number
].src
=
2127 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
2128 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2133 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2140 assert(src_number
== num_srcs
);
2142 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2143 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2147 nir_visitor::visit(ir_constant
*ir
)
2150 * We don't know if this variable is an array or struct that gets
2151 * dereferenced, so do the safe thing an make it a variable with a
2152 * constant initializer and return a dereference.
2156 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2157 var
->data
.read_only
= true;
2158 var
->constant_initializer
= constant_copy(ir
, var
);
2160 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2161 this->deref_tail
= &this->deref_head
->deref
;
2165 nir_visitor::visit(ir_dereference_variable
*ir
)
2167 struct hash_entry
*entry
=
2168 _mesa_hash_table_search(this->var_table
, ir
->var
);
2170 nir_variable
*var
= (nir_variable
*) entry
->data
;
2172 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2173 this->deref_head
= deref
;
2174 this->deref_tail
= &deref
->deref
;
2178 nir_visitor::visit(ir_dereference_record
*ir
)
2180 ir
->record
->accept(this);
2182 int field_index
= ir
->field_idx
;
2183 assert(field_index
>= 0);
2185 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2186 deref
->deref
.type
= ir
->type
;
2187 this->deref_tail
->child
= &deref
->deref
;
2188 this->deref_tail
= &deref
->deref
;
2192 nir_visitor::visit(ir_dereference_array
*ir
)
2194 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2195 deref
->deref
.type
= ir
->type
;
2197 ir_constant
*const_index
= ir
->array_index
->as_constant();
2198 if (const_index
!= NULL
) {
2199 deref
->deref_array_type
= nir_deref_array_type_direct
;
2200 deref
->base_offset
= const_index
->value
.u
[0];
2202 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2204 nir_src_for_ssa(evaluate_rvalue(ir
->array_index
));
2207 ir
->array
->accept(this);
2209 this->deref_tail
->child
= &deref
->deref
;
2210 ralloc_steal(this->deref_tail
, deref
);
2211 this->deref_tail
= &deref
->deref
;
2215 nir_visitor::visit(ir_barrier
*)
2217 nir_intrinsic_instr
*instr
=
2218 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2219 nir_builder_instr_insert(&b
, &instr
->instr
);