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 glsl_to_nir(const struct gl_shader_program
*shader_prog
,
134 gl_shader_stage stage
,
135 const nir_shader_compiler_options
*options
)
137 struct gl_linked_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
139 nir_shader
*shader
= nir_shader_create(NULL
, stage
, options
,
142 nir_visitor
v1(shader
);
143 nir_function_visitor
v2(&v1
);
145 visit_exec_list(sh
->ir
, &v1
);
147 nir_lower_constant_initializers(shader
, (nir_variable_mode
)~0);
149 shader
->info
->name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
150 if (shader_prog
->Label
)
151 shader
->info
->label
= ralloc_strdup(shader
, shader_prog
->Label
);
152 shader
->info
->num_textures
= util_last_bit(sh
->Program
->SamplersUsed
);
153 shader
->info
->clip_distance_array_size
= sh
->Program
->ClipDistanceArraySize
;
154 shader
->info
->cull_distance_array_size
= sh
->Program
->CullDistanceArraySize
;
155 shader
->info
->has_transform_feedback_varyings
=
156 shader_prog
->TransformFeedback
.NumVarying
> 0;
161 nir_visitor::nir_visitor(nir_shader
*shader
)
163 this->supports_ints
= shader
->options
->native_integers
;
164 this->shader
= shader
;
165 this->is_global
= true;
166 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
167 _mesa_key_pointer_equal
);
168 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
169 _mesa_key_pointer_equal
);
173 this->deref_head
= NULL
;
174 this->deref_tail
= NULL
;
175 memset(&this->b
, 0, sizeof(this->b
));
178 nir_visitor::~nir_visitor()
180 _mesa_hash_table_destroy(this->var_table
, NULL
);
181 _mesa_hash_table_destroy(this->overload_table
, NULL
);
185 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
188 ralloc_steal(mem_ctx
, this->deref_head
);
189 return this->deref_head
;
192 static nir_constant
*
193 constant_copy(ir_constant
*ir
, void *mem_ctx
)
198 nir_constant
*ret
= ralloc(mem_ctx
, nir_constant
);
200 const unsigned rows
= ir
->type
->vector_elements
;
201 const unsigned cols
= ir
->type
->matrix_columns
;
204 ret
->num_elements
= 0;
205 switch (ir
->type
->base_type
) {
207 /* Only float base types can be matrices. */
210 for (unsigned r
= 0; r
< rows
; r
++)
211 ret
->values
[0].u32
[r
] = ir
->value
.u
[r
];
216 /* Only float base types can be matrices. */
219 for (unsigned r
= 0; r
< rows
; r
++)
220 ret
->values
[0].i32
[r
] = ir
->value
.i
[r
];
224 case GLSL_TYPE_FLOAT
:
225 for (unsigned c
= 0; c
< cols
; c
++) {
226 for (unsigned r
= 0; r
< rows
; r
++)
227 ret
->values
[c
].f32
[r
] = ir
->value
.f
[c
* rows
+ r
];
231 case GLSL_TYPE_DOUBLE
:
232 for (unsigned c
= 0; c
< cols
; c
++) {
233 for (unsigned r
= 0; r
< rows
; r
++)
234 ret
->values
[c
].f64
[r
] = ir
->value
.d
[c
* rows
+ r
];
239 /* Only float base types can be matrices. */
242 for (unsigned r
= 0; r
< rows
; r
++)
243 ret
->values
[0].u32
[r
] = ir
->value
.b
[r
] ? NIR_TRUE
: NIR_FALSE
;
247 case GLSL_TYPE_STRUCT
:
248 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
250 ret
->num_elements
= ir
->type
->length
;
253 foreach_in_list(ir_constant
, field
, &ir
->components
) {
254 ret
->elements
[i
] = constant_copy(field
, mem_ctx
);
259 case GLSL_TYPE_ARRAY
:
260 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
262 ret
->num_elements
= ir
->type
->length
;
264 for (i
= 0; i
< ir
->type
->length
; i
++)
265 ret
->elements
[i
] = constant_copy(ir
->array_elements
[i
], mem_ctx
);
269 unreachable("not reached");
276 nir_visitor::visit(ir_variable
*ir
)
278 nir_variable
*var
= ralloc(shader
, nir_variable
);
279 var
->type
= ir
->type
;
280 var
->name
= ralloc_strdup(var
, ir
->name
);
282 var
->data
.read_only
= ir
->data
.read_only
;
283 var
->data
.centroid
= ir
->data
.centroid
;
284 var
->data
.sample
= ir
->data
.sample
;
285 var
->data
.patch
= ir
->data
.patch
;
286 var
->data
.invariant
= ir
->data
.invariant
;
287 var
->data
.location
= ir
->data
.location
;
289 switch(ir
->data
.mode
) {
291 case ir_var_temporary
:
293 var
->data
.mode
= nir_var_global
;
295 var
->data
.mode
= nir_var_local
;
298 case ir_var_function_in
:
299 case ir_var_function_out
:
300 case ir_var_function_inout
:
301 case ir_var_const_in
:
302 var
->data
.mode
= nir_var_local
;
305 case ir_var_shader_in
:
306 if (shader
->stage
== MESA_SHADER_FRAGMENT
&&
307 ir
->data
.location
== VARYING_SLOT_FACE
) {
308 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
309 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
310 var
->data
.mode
= nir_var_system_value
;
311 } else if (shader
->stage
== MESA_SHADER_GEOMETRY
&&
312 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
313 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
314 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
315 var
->data
.mode
= nir_var_system_value
;
317 var
->data
.mode
= nir_var_shader_in
;
321 case ir_var_shader_out
:
322 var
->data
.mode
= nir_var_shader_out
;
326 var
->data
.mode
= nir_var_uniform
;
329 case ir_var_shader_storage
:
330 var
->data
.mode
= nir_var_shader_storage
;
333 case ir_var_system_value
:
334 var
->data
.mode
= nir_var_system_value
;
338 unreachable("not reached");
341 var
->data
.interpolation
= ir
->data
.interpolation
;
342 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
343 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
344 var
->data
.compact
= false;
345 var
->data
.location_frac
= ir
->data
.location_frac
;
347 switch (ir
->data
.depth_layout
) {
348 case ir_depth_layout_none
:
349 var
->data
.depth_layout
= nir_depth_layout_none
;
351 case ir_depth_layout_any
:
352 var
->data
.depth_layout
= nir_depth_layout_any
;
354 case ir_depth_layout_greater
:
355 var
->data
.depth_layout
= nir_depth_layout_greater
;
357 case ir_depth_layout_less
:
358 var
->data
.depth_layout
= nir_depth_layout_less
;
360 case ir_depth_layout_unchanged
:
361 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
364 unreachable("not reached");
367 var
->data
.index
= ir
->data
.index
;
368 var
->data
.binding
= ir
->data
.binding
;
369 var
->data
.offset
= ir
->data
.offset
;
370 var
->data
.image
.read_only
= ir
->data
.image_read_only
;
371 var
->data
.image
.write_only
= ir
->data
.image_write_only
;
372 var
->data
.image
.coherent
= ir
->data
.image_coherent
;
373 var
->data
.image
._volatile
= ir
->data
.image_volatile
;
374 var
->data
.image
.restrict_flag
= ir
->data
.image_restrict
;
375 var
->data
.image
.format
= ir
->data
.image_format
;
376 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
378 var
->num_state_slots
= ir
->get_num_state_slots();
379 if (var
->num_state_slots
> 0) {
380 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
381 var
->num_state_slots
);
383 ir_state_slot
*state_slots
= ir
->get_state_slots();
384 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
385 for (unsigned j
= 0; j
< 5; j
++)
386 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
387 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
390 var
->state_slots
= NULL
;
393 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
395 var
->interface_type
= ir
->get_interface_type();
397 if (var
->data
.mode
== nir_var_local
)
398 nir_function_impl_add_variable(impl
, var
);
400 nir_shader_add_variable(shader
, var
);
402 _mesa_hash_table_insert(var_table
, ir
, var
);
407 nir_function_visitor::visit_enter(ir_function
*ir
)
409 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
410 visitor
->create_function(sig
);
412 return visit_continue_with_parent
;
416 nir_visitor::create_function(ir_function_signature
*ir
)
418 if (ir
->is_intrinsic())
421 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
423 assert(ir
->parameters
.is_empty());
424 assert(ir
->return_type
== glsl_type::void_type
);
426 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
430 nir_visitor::visit(ir_function
*ir
)
432 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
437 nir_visitor::visit(ir_function_signature
*ir
)
439 if (ir
->is_intrinsic())
442 struct hash_entry
*entry
=
443 _mesa_hash_table_search(this->overload_table
, ir
);
446 nir_function
*func
= (nir_function
*) entry
->data
;
448 if (ir
->is_defined
) {
449 nir_function_impl
*impl
= nir_function_impl_create(func
);
452 assert(strcmp(func
->name
, "main") == 0);
453 assert(ir
->parameters
.is_empty());
454 assert(func
->return_type
== glsl_type::void_type
);
456 this->is_global
= false;
458 nir_builder_init(&b
, impl
);
459 b
.cursor
= nir_after_cf_list(&impl
->body
);
460 visit_exec_list(&ir
->body
, this);
462 this->is_global
= true;
469 nir_visitor::visit(ir_loop
*ir
)
471 nir_loop
*loop
= nir_loop_create(this->shader
);
472 nir_builder_cf_insert(&b
, &loop
->cf_node
);
474 b
.cursor
= nir_after_cf_list(&loop
->body
);
475 visit_exec_list(&ir
->body_instructions
, this);
476 b
.cursor
= nir_after_cf_node(&loop
->cf_node
);
480 nir_visitor::visit(ir_if
*ir
)
483 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
485 nir_if
*if_stmt
= nir_if_create(this->shader
);
486 if_stmt
->condition
= condition
;
487 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
489 b
.cursor
= nir_after_cf_list(&if_stmt
->then_list
);
490 visit_exec_list(&ir
->then_instructions
, this);
492 b
.cursor
= nir_after_cf_list(&if_stmt
->else_list
);
493 visit_exec_list(&ir
->else_instructions
, this);
495 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
499 nir_visitor::visit(ir_discard
*ir
)
502 * discards aren't treated as control flow, because before we lower them
503 * they can appear anywhere in the shader and the stuff after them may still
504 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
505 * discards will be immediately followed by a return.
508 nir_intrinsic_instr
*discard
;
510 discard
= nir_intrinsic_instr_create(this->shader
,
511 nir_intrinsic_discard_if
);
513 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
515 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
518 nir_builder_instr_insert(&b
, &discard
->instr
);
522 nir_visitor::visit(ir_emit_vertex
*ir
)
524 nir_intrinsic_instr
*instr
=
525 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
526 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
527 nir_builder_instr_insert(&b
, &instr
->instr
);
531 nir_visitor::visit(ir_end_primitive
*ir
)
533 nir_intrinsic_instr
*instr
=
534 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
535 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
536 nir_builder_instr_insert(&b
, &instr
->instr
);
540 nir_visitor::visit(ir_loop_jump
*ir
)
544 case ir_loop_jump::jump_break
:
545 type
= nir_jump_break
;
547 case ir_loop_jump::jump_continue
:
548 type
= nir_jump_continue
;
551 unreachable("not reached");
554 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
555 nir_builder_instr_insert(&b
, &instr
->instr
);
559 nir_visitor::visit(ir_return
*ir
)
561 if (ir
->value
!= NULL
) {
562 nir_intrinsic_instr
*copy
=
563 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
565 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
566 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
569 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
570 nir_builder_instr_insert(&b
, &instr
->instr
);
574 nir_visitor::visit(ir_call
*ir
)
576 if (ir
->callee
->is_intrinsic()) {
579 switch (ir
->callee
->intrinsic_id
) {
580 case ir_intrinsic_atomic_counter_read
:
581 op
= nir_intrinsic_atomic_counter_read_var
;
583 case ir_intrinsic_atomic_counter_increment
:
584 op
= nir_intrinsic_atomic_counter_inc_var
;
586 case ir_intrinsic_atomic_counter_predecrement
:
587 op
= nir_intrinsic_atomic_counter_dec_var
;
589 case ir_intrinsic_atomic_counter_add
:
590 op
= nir_intrinsic_atomic_counter_add_var
;
592 case ir_intrinsic_atomic_counter_and
:
593 op
= nir_intrinsic_atomic_counter_and_var
;
595 case ir_intrinsic_atomic_counter_or
:
596 op
= nir_intrinsic_atomic_counter_or_var
;
598 case ir_intrinsic_atomic_counter_xor
:
599 op
= nir_intrinsic_atomic_counter_xor_var
;
601 case ir_intrinsic_atomic_counter_min
:
602 op
= nir_intrinsic_atomic_counter_min_var
;
604 case ir_intrinsic_atomic_counter_max
:
605 op
= nir_intrinsic_atomic_counter_max_var
;
607 case ir_intrinsic_atomic_counter_exchange
:
608 op
= nir_intrinsic_atomic_counter_exchange_var
;
610 case ir_intrinsic_atomic_counter_comp_swap
:
611 op
= nir_intrinsic_atomic_counter_comp_swap_var
;
613 case ir_intrinsic_image_load
:
614 op
= nir_intrinsic_image_load
;
616 case ir_intrinsic_image_store
:
617 op
= nir_intrinsic_image_store
;
619 case ir_intrinsic_image_atomic_add
:
620 op
= nir_intrinsic_image_atomic_add
;
622 case ir_intrinsic_image_atomic_min
:
623 op
= nir_intrinsic_image_atomic_min
;
625 case ir_intrinsic_image_atomic_max
:
626 op
= nir_intrinsic_image_atomic_max
;
628 case ir_intrinsic_image_atomic_and
:
629 op
= nir_intrinsic_image_atomic_and
;
631 case ir_intrinsic_image_atomic_or
:
632 op
= nir_intrinsic_image_atomic_or
;
634 case ir_intrinsic_image_atomic_xor
:
635 op
= nir_intrinsic_image_atomic_xor
;
637 case ir_intrinsic_image_atomic_exchange
:
638 op
= nir_intrinsic_image_atomic_exchange
;
640 case ir_intrinsic_image_atomic_comp_swap
:
641 op
= nir_intrinsic_image_atomic_comp_swap
;
643 case ir_intrinsic_memory_barrier
:
644 op
= nir_intrinsic_memory_barrier
;
646 case ir_intrinsic_image_size
:
647 op
= nir_intrinsic_image_size
;
649 case ir_intrinsic_image_samples
:
650 op
= nir_intrinsic_image_samples
;
652 case ir_intrinsic_ssbo_store
:
653 op
= nir_intrinsic_store_ssbo
;
655 case ir_intrinsic_ssbo_load
:
656 op
= nir_intrinsic_load_ssbo
;
658 case ir_intrinsic_ssbo_atomic_add
:
659 op
= nir_intrinsic_ssbo_atomic_add
;
661 case ir_intrinsic_ssbo_atomic_and
:
662 op
= nir_intrinsic_ssbo_atomic_and
;
664 case ir_intrinsic_ssbo_atomic_or
:
665 op
= nir_intrinsic_ssbo_atomic_or
;
667 case ir_intrinsic_ssbo_atomic_xor
:
668 op
= nir_intrinsic_ssbo_atomic_xor
;
670 case ir_intrinsic_ssbo_atomic_min
:
671 assert(ir
->return_deref
);
672 if (ir
->return_deref
->type
== glsl_type::int_type
)
673 op
= nir_intrinsic_ssbo_atomic_imin
;
674 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
675 op
= nir_intrinsic_ssbo_atomic_umin
;
677 unreachable("Invalid type");
679 case ir_intrinsic_ssbo_atomic_max
:
680 assert(ir
->return_deref
);
681 if (ir
->return_deref
->type
== glsl_type::int_type
)
682 op
= nir_intrinsic_ssbo_atomic_imax
;
683 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
684 op
= nir_intrinsic_ssbo_atomic_umax
;
686 unreachable("Invalid type");
688 case ir_intrinsic_ssbo_atomic_exchange
:
689 op
= nir_intrinsic_ssbo_atomic_exchange
;
691 case ir_intrinsic_ssbo_atomic_comp_swap
:
692 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
694 case ir_intrinsic_shader_clock
:
695 op
= nir_intrinsic_shader_clock
;
697 case ir_intrinsic_group_memory_barrier
:
698 op
= nir_intrinsic_group_memory_barrier
;
700 case ir_intrinsic_memory_barrier_atomic_counter
:
701 op
= nir_intrinsic_memory_barrier_atomic_counter
;
703 case ir_intrinsic_memory_barrier_buffer
:
704 op
= nir_intrinsic_memory_barrier_buffer
;
706 case ir_intrinsic_memory_barrier_image
:
707 op
= nir_intrinsic_memory_barrier_image
;
709 case ir_intrinsic_memory_barrier_shared
:
710 op
= nir_intrinsic_memory_barrier_shared
;
712 case ir_intrinsic_shared_load
:
713 op
= nir_intrinsic_load_shared
;
715 case ir_intrinsic_shared_store
:
716 op
= nir_intrinsic_store_shared
;
718 case ir_intrinsic_shared_atomic_add
:
719 op
= nir_intrinsic_shared_atomic_add
;
721 case ir_intrinsic_shared_atomic_and
:
722 op
= nir_intrinsic_shared_atomic_and
;
724 case ir_intrinsic_shared_atomic_or
:
725 op
= nir_intrinsic_shared_atomic_or
;
727 case ir_intrinsic_shared_atomic_xor
:
728 op
= nir_intrinsic_shared_atomic_xor
;
730 case ir_intrinsic_shared_atomic_min
:
731 assert(ir
->return_deref
);
732 if (ir
->return_deref
->type
== glsl_type::int_type
)
733 op
= nir_intrinsic_shared_atomic_imin
;
734 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
735 op
= nir_intrinsic_shared_atomic_umin
;
737 unreachable("Invalid type");
739 case ir_intrinsic_shared_atomic_max
:
740 assert(ir
->return_deref
);
741 if (ir
->return_deref
->type
== glsl_type::int_type
)
742 op
= nir_intrinsic_shared_atomic_imax
;
743 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
744 op
= nir_intrinsic_shared_atomic_umax
;
746 unreachable("Invalid type");
748 case ir_intrinsic_shared_atomic_exchange
:
749 op
= nir_intrinsic_shared_atomic_exchange
;
751 case ir_intrinsic_shared_atomic_comp_swap
:
752 op
= nir_intrinsic_shared_atomic_comp_swap
;
755 unreachable("not reached");
758 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
759 nir_dest
*dest
= &instr
->dest
;
762 case nir_intrinsic_atomic_counter_read_var
:
763 case nir_intrinsic_atomic_counter_inc_var
:
764 case nir_intrinsic_atomic_counter_dec_var
:
765 case nir_intrinsic_atomic_counter_add_var
:
766 case nir_intrinsic_atomic_counter_min_var
:
767 case nir_intrinsic_atomic_counter_max_var
:
768 case nir_intrinsic_atomic_counter_and_var
:
769 case nir_intrinsic_atomic_counter_or_var
:
770 case nir_intrinsic_atomic_counter_xor_var
:
771 case nir_intrinsic_atomic_counter_exchange_var
:
772 case nir_intrinsic_atomic_counter_comp_swap_var
: {
773 /* Set the counter variable dereference. */
774 exec_node
*param
= ir
->actual_parameters
.get_head();
775 ir_dereference
*counter
= (ir_dereference
*)param
;
777 instr
->variables
[0] = evaluate_deref(&instr
->instr
, counter
);
778 param
= param
->get_next();
780 /* Set the intrinsic destination. */
781 if (ir
->return_deref
) {
782 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
785 /* Set the intrinsic parameters. */
786 if (!param
->is_tail_sentinel()) {
788 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
789 param
= param
->get_next();
792 if (!param
->is_tail_sentinel()) {
794 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
795 param
= param
->get_next();
798 nir_builder_instr_insert(&b
, &instr
->instr
);
801 case nir_intrinsic_image_load
:
802 case nir_intrinsic_image_store
:
803 case nir_intrinsic_image_atomic_add
:
804 case nir_intrinsic_image_atomic_min
:
805 case nir_intrinsic_image_atomic_max
:
806 case nir_intrinsic_image_atomic_and
:
807 case nir_intrinsic_image_atomic_or
:
808 case nir_intrinsic_image_atomic_xor
:
809 case nir_intrinsic_image_atomic_exchange
:
810 case nir_intrinsic_image_atomic_comp_swap
:
811 case nir_intrinsic_image_samples
:
812 case nir_intrinsic_image_size
: {
813 nir_ssa_undef_instr
*instr_undef
=
814 nir_ssa_undef_instr_create(shader
, 1, 32);
815 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
817 /* Set the image variable dereference. */
818 exec_node
*param
= ir
->actual_parameters
.get_head();
819 ir_dereference
*image
= (ir_dereference
*)param
;
820 const glsl_type
*type
=
821 image
->variable_referenced()->type
->without_array();
823 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
824 param
= param
->get_next();
826 /* Set the intrinsic destination. */
827 if (ir
->return_deref
) {
828 const nir_intrinsic_info
*info
=
829 &nir_intrinsic_infos
[instr
->intrinsic
];
830 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
831 info
->dest_components
, 32, NULL
);
834 if (op
== nir_intrinsic_image_size
||
835 op
== nir_intrinsic_image_samples
) {
836 nir_builder_instr_insert(&b
, &instr
->instr
);
840 /* Set the address argument, extending the coordinate vector to four
843 nir_ssa_def
*src_addr
=
844 evaluate_rvalue((ir_dereference
*)param
);
845 nir_ssa_def
*srcs
[4];
847 for (int i
= 0; i
< 4; i
++) {
848 if (i
< type
->coordinate_components())
849 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
851 srcs
[i
] = &instr_undef
->def
;
854 instr
->src
[0] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
855 param
= param
->get_next();
857 /* Set the sample argument, which is undefined for single-sample
860 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
862 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
863 param
= param
->get_next();
865 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
868 /* Set the intrinsic parameters. */
869 if (!param
->is_tail_sentinel()) {
871 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
872 param
= param
->get_next();
875 if (!param
->is_tail_sentinel()) {
877 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
878 param
= param
->get_next();
880 nir_builder_instr_insert(&b
, &instr
->instr
);
883 case nir_intrinsic_memory_barrier
:
884 case nir_intrinsic_group_memory_barrier
:
885 case nir_intrinsic_memory_barrier_atomic_counter
:
886 case nir_intrinsic_memory_barrier_buffer
:
887 case nir_intrinsic_memory_barrier_image
:
888 case nir_intrinsic_memory_barrier_shared
:
889 nir_builder_instr_insert(&b
, &instr
->instr
);
891 case nir_intrinsic_shader_clock
:
892 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
893 nir_builder_instr_insert(&b
, &instr
->instr
);
895 case nir_intrinsic_store_ssbo
: {
896 exec_node
*param
= ir
->actual_parameters
.get_head();
897 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
899 param
= param
->get_next();
900 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
902 param
= param
->get_next();
903 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
905 param
= param
->get_next();
906 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
909 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
910 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
911 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
912 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
913 instr
->num_components
= val
->type
->vector_elements
;
915 nir_builder_instr_insert(&b
, &instr
->instr
);
918 case nir_intrinsic_load_ssbo
: {
919 exec_node
*param
= ir
->actual_parameters
.get_head();
920 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
922 param
= param
->get_next();
923 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
925 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
926 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
928 const glsl_type
*type
= ir
->return_deref
->var
->type
;
929 instr
->num_components
= type
->vector_elements
;
931 /* Setup destination register */
932 unsigned bit_size
= glsl_get_bit_size(type
);
933 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
934 type
->vector_elements
, bit_size
, NULL
);
936 /* Insert the created nir instruction now since in the case of boolean
937 * result we will need to emit another instruction after it
939 nir_builder_instr_insert(&b
, &instr
->instr
);
942 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
943 * consider a true boolean to be ~0. Fix this up with a != 0
946 if (type
->base_type
== GLSL_TYPE_BOOL
) {
947 nir_alu_instr
*load_ssbo_compare
=
948 nir_alu_instr_create(shader
, nir_op_ine
);
949 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
950 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
951 load_ssbo_compare
->src
[1].src
=
952 nir_src_for_ssa(nir_imm_int(&b
, 0));
953 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
954 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
955 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
956 &load_ssbo_compare
->dest
.dest
,
957 type
->vector_elements
, bit_size
, NULL
);
958 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
959 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
960 dest
= &load_ssbo_compare
->dest
.dest
;
964 case nir_intrinsic_ssbo_atomic_add
:
965 case nir_intrinsic_ssbo_atomic_imin
:
966 case nir_intrinsic_ssbo_atomic_umin
:
967 case nir_intrinsic_ssbo_atomic_imax
:
968 case nir_intrinsic_ssbo_atomic_umax
:
969 case nir_intrinsic_ssbo_atomic_and
:
970 case nir_intrinsic_ssbo_atomic_or
:
971 case nir_intrinsic_ssbo_atomic_xor
:
972 case nir_intrinsic_ssbo_atomic_exchange
:
973 case nir_intrinsic_ssbo_atomic_comp_swap
: {
974 int param_count
= ir
->actual_parameters
.length();
975 assert(param_count
== 3 || param_count
== 4);
978 exec_node
*param
= ir
->actual_parameters
.get_head();
979 ir_instruction
*inst
= (ir_instruction
*) param
;
980 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
983 param
= param
->get_next();
984 inst
= (ir_instruction
*) param
;
985 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
987 /* data1 parameter (this is always present) */
988 param
= param
->get_next();
989 inst
= (ir_instruction
*) param
;
990 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
992 /* data2 parameter (only with atomic_comp_swap) */
993 if (param_count
== 4) {
994 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
995 param
= param
->get_next();
996 inst
= (ir_instruction
*) param
;
997 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1001 assert(ir
->return_deref
);
1002 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1003 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1004 nir_builder_instr_insert(&b
, &instr
->instr
);
1007 case nir_intrinsic_load_shared
: {
1008 exec_node
*param
= ir
->actual_parameters
.get_head();
1009 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1011 nir_intrinsic_set_base(instr
, 0);
1012 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1014 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1015 instr
->num_components
= type
->vector_elements
;
1017 /* Setup destination register */
1018 unsigned bit_size
= glsl_get_bit_size(type
);
1019 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1020 type
->vector_elements
, bit_size
, NULL
);
1022 nir_builder_instr_insert(&b
, &instr
->instr
);
1025 case nir_intrinsic_store_shared
: {
1026 exec_node
*param
= ir
->actual_parameters
.get_head();
1027 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1029 param
= param
->get_next();
1030 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1032 param
= param
->get_next();
1033 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1036 nir_intrinsic_set_base(instr
, 0);
1037 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1039 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1041 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1042 instr
->num_components
= val
->type
->vector_elements
;
1044 nir_builder_instr_insert(&b
, &instr
->instr
);
1047 case nir_intrinsic_shared_atomic_add
:
1048 case nir_intrinsic_shared_atomic_imin
:
1049 case nir_intrinsic_shared_atomic_umin
:
1050 case nir_intrinsic_shared_atomic_imax
:
1051 case nir_intrinsic_shared_atomic_umax
:
1052 case nir_intrinsic_shared_atomic_and
:
1053 case nir_intrinsic_shared_atomic_or
:
1054 case nir_intrinsic_shared_atomic_xor
:
1055 case nir_intrinsic_shared_atomic_exchange
:
1056 case nir_intrinsic_shared_atomic_comp_swap
: {
1057 int param_count
= ir
->actual_parameters
.length();
1058 assert(param_count
== 2 || param_count
== 3);
1061 exec_node
*param
= ir
->actual_parameters
.get_head();
1062 ir_instruction
*inst
= (ir_instruction
*) param
;
1063 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1065 /* data1 parameter (this is always present) */
1066 param
= param
->get_next();
1067 inst
= (ir_instruction
*) param
;
1068 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1070 /* data2 parameter (only with atomic_comp_swap) */
1071 if (param_count
== 3) {
1072 assert(op
== nir_intrinsic_shared_atomic_comp_swap
);
1073 param
= param
->get_next();
1074 inst
= (ir_instruction
*) param
;
1076 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1080 assert(ir
->return_deref
);
1081 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1082 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1083 ir
->return_deref
->type
->vector_elements
,
1085 nir_builder_instr_insert(&b
, &instr
->instr
);
1089 unreachable("not reached");
1092 if (ir
->return_deref
) {
1093 nir_intrinsic_instr
*store_instr
=
1094 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
1095 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1096 nir_intrinsic_set_write_mask(store_instr
,
1097 (1 << store_instr
->num_components
) - 1);
1099 store_instr
->variables
[0] =
1100 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
1101 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
1103 nir_builder_instr_insert(&b
, &store_instr
->instr
);
1109 struct hash_entry
*entry
=
1110 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1112 nir_function
*callee
= (nir_function
*) entry
->data
;
1114 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
1117 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
1118 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
1122 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
1123 nir_builder_instr_insert(&b
, &instr
->instr
);
1127 nir_visitor::visit(ir_assignment
*ir
)
1129 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1131 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1132 ir
->lhs
->variable_referenced()->data
.precise
;
1134 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1135 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1136 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1137 nir_intrinsic_instr
*copy
=
1138 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1140 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1141 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1143 if (ir
->condition
) {
1144 nir_if
*if_stmt
= nir_if_create(this->shader
);
1145 if_stmt
->condition
= nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
1146 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
1147 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, ©
->instr
);
1148 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
1150 nir_builder_instr_insert(&b
, ©
->instr
);
1155 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1157 ir
->lhs
->accept(this);
1158 nir_deref_var
*lhs_deref
= this->deref_head
;
1159 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1161 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1162 /* GLSL IR will give us the input to the write-masked assignment in a
1163 * single packed vector. So, for example, if the writemask is xzw, then
1164 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1168 unsigned component
= 0;
1169 for (unsigned i
= 0; i
< 4; i
++) {
1170 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1172 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1175 nir_intrinsic_instr
*store
=
1176 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1177 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1178 nir_intrinsic_set_write_mask(store
, ir
->write_mask
);
1179 store
->variables
[0] = nir_deref_var_clone(lhs_deref
, store
);
1180 store
->src
[0] = nir_src_for_ssa(src
);
1182 if (ir
->condition
) {
1183 nir_if
*if_stmt
= nir_if_create(this->shader
);
1184 if_stmt
->condition
= nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
1185 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
1186 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, &store
->instr
);
1187 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
1189 nir_builder_instr_insert(&b
, &store
->instr
);
1194 * Given an instruction, returns a pointer to its destination or NULL if there
1195 * is no destination.
1197 * Note that this only handles instructions we generate at this level.
1200 get_instr_dest(nir_instr
*instr
)
1202 nir_alu_instr
*alu_instr
;
1203 nir_intrinsic_instr
*intrinsic_instr
;
1204 nir_tex_instr
*tex_instr
;
1206 switch (instr
->type
) {
1207 case nir_instr_type_alu
:
1208 alu_instr
= nir_instr_as_alu(instr
);
1209 return &alu_instr
->dest
.dest
;
1211 case nir_instr_type_intrinsic
:
1212 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1213 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1214 return &intrinsic_instr
->dest
;
1218 case nir_instr_type_tex
:
1219 tex_instr
= nir_instr_as_tex(instr
);
1220 return &tex_instr
->dest
;
1223 unreachable("not reached");
1230 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1233 nir_dest
*dest
= get_instr_dest(instr
);
1236 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1238 nir_builder_instr_insert(&b
, instr
);
1241 assert(dest
->is_ssa
);
1242 this->result
= &dest
->ssa
;
1247 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1250 if (ir
->as_dereference() || ir
->as_constant()) {
1252 * A dereference is being used on the right hand side, which means we
1253 * must emit a variable load.
1256 nir_intrinsic_instr
*load_instr
=
1257 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1258 load_instr
->num_components
= ir
->type
->vector_elements
;
1259 load_instr
->variables
[0] = this->deref_head
;
1260 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1261 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1262 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
, bit_size
);
1265 return this->result
;
1269 type_is_float(glsl_base_type type
)
1271 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
;
1275 nir_visitor::visit(ir_expression
*ir
)
1277 /* Some special cases */
1278 switch (ir
->operation
) {
1279 case ir_binop_ubo_load
: {
1280 nir_intrinsic_instr
*load
=
1281 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1282 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1283 load
->num_components
= ir
->type
->vector_elements
;
1284 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1285 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1286 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1289 * In UBO's, a true boolean value is any non-zero value, but we consider
1290 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1293 if (ir
->type
->base_type
== GLSL_TYPE_BOOL
)
1294 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1299 case ir_unop_interpolate_at_centroid
:
1300 case ir_binop_interpolate_at_offset
:
1301 case ir_binop_interpolate_at_sample
: {
1302 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1303 ir_swizzle
*swizzle
= NULL
;
1305 /* the api does not allow a swizzle here, but the varying packing code
1306 * may have pushed one into here.
1308 swizzle
= ir
->operands
[0]->as_swizzle();
1310 deref
= swizzle
->val
->as_dereference();
1314 deref
->accept(this);
1316 nir_intrinsic_op op
;
1317 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1318 switch (ir
->operation
) {
1319 case ir_unop_interpolate_at_centroid
:
1320 op
= nir_intrinsic_interp_var_at_centroid
;
1322 case ir_binop_interpolate_at_offset
:
1323 op
= nir_intrinsic_interp_var_at_offset
;
1325 case ir_binop_interpolate_at_sample
:
1326 op
= nir_intrinsic_interp_var_at_sample
;
1329 unreachable("Invalid interpolation intrinsic");
1332 /* This case can happen if the vertex shader does not write the
1333 * given varying. In this case, the linker will lower it to a
1334 * global variable. Since interpolating a variable makes no
1335 * sense, we'll just turn it into a load which will probably
1336 * eventually end up as an SSA definition.
1338 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1339 op
= nir_intrinsic_load_var
;
1342 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1343 intrin
->num_components
= deref
->type
->vector_elements
;
1344 intrin
->variables
[0] = this->deref_head
;
1345 ralloc_steal(intrin
, intrin
->variables
[0]);
1347 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1348 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1349 intrin
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1351 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1352 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1355 unsigned swiz
[4] = {
1356 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1359 result
= nir_swizzle(&b
, result
, swiz
,
1360 swizzle
->type
->vector_elements
, false);
1370 nir_ssa_def
*srcs
[4];
1371 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1372 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1374 glsl_base_type types
[4];
1375 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1377 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1379 types
[i
] = GLSL_TYPE_FLOAT
;
1381 glsl_base_type out_type
;
1383 out_type
= ir
->type
->base_type
;
1385 out_type
= GLSL_TYPE_FLOAT
;
1387 switch (ir
->operation
) {
1388 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1389 case ir_unop_logic_not
:
1390 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1393 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1394 : nir_ineg(&b
, srcs
[0]);
1397 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1398 : nir_iabs(&b
, srcs
[0]);
1400 case ir_unop_saturate
:
1401 assert(type_is_float(types
[0]));
1402 result
= nir_fsat(&b
, srcs
[0]);
1405 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1406 : nir_isign(&b
, srcs
[0]);
1408 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1409 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1410 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1411 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1412 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1413 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1414 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1416 result
= supports_ints
? nir_i2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1419 result
= supports_ints
? nir_u2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1422 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1424 case ir_unop_f2i
: result
= nir_f2i(&b
, srcs
[0]); break;
1425 case ir_unop_f2u
: result
= nir_f2u(&b
, srcs
[0]); break;
1426 case ir_unop_f2b
: result
= nir_f2b(&b
, srcs
[0]); break;
1427 case ir_unop_i2b
: result
= nir_i2b(&b
, srcs
[0]); break;
1428 case ir_unop_b2i
: result
= nir_b2i(&b
, srcs
[0]); break;
1429 case ir_unop_d2f
: result
= nir_d2f(&b
, srcs
[0]); break;
1430 case ir_unop_f2d
: result
= nir_f2d(&b
, srcs
[0]); break;
1431 case ir_unop_d2i
: result
= nir_d2i(&b
, srcs
[0]); break;
1432 case ir_unop_d2u
: result
= nir_d2u(&b
, srcs
[0]); break;
1433 case ir_unop_d2b
: result
= nir_d2b(&b
, srcs
[0]); break;
1435 assert(supports_ints
);
1436 result
= nir_i2d(&b
, srcs
[0]);
1439 assert(supports_ints
);
1440 result
= nir_u2d(&b
, srcs
[0]);
1444 case ir_unop_bitcast_i2f
:
1445 case ir_unop_bitcast_f2i
:
1446 case ir_unop_bitcast_u2f
:
1447 case ir_unop_bitcast_f2u
:
1448 case ir_unop_subroutine_to_int
:
1450 result
= nir_imov(&b
, srcs
[0]);
1452 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1453 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1454 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1455 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1456 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1457 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1458 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1459 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1460 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1461 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1462 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1463 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1464 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1465 case ir_unop_pack_snorm_2x16
:
1466 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1468 case ir_unop_pack_snorm_4x8
:
1469 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1471 case ir_unop_pack_unorm_2x16
:
1472 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1474 case ir_unop_pack_unorm_4x8
:
1475 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1477 case ir_unop_pack_half_2x16
:
1478 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1480 case ir_unop_unpack_snorm_2x16
:
1481 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1483 case ir_unop_unpack_snorm_4x8
:
1484 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1486 case ir_unop_unpack_unorm_2x16
:
1487 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1489 case ir_unop_unpack_unorm_4x8
:
1490 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1492 case ir_unop_unpack_half_2x16
:
1493 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1495 case ir_unop_pack_double_2x32
:
1496 result
= nir_pack_double_2x32(&b
, srcs
[0]);
1498 case ir_unop_unpack_double_2x32
:
1499 result
= nir_unpack_double_2x32(&b
, srcs
[0]);
1501 case ir_unop_bitfield_reverse
:
1502 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1504 case ir_unop_bit_count
:
1505 result
= nir_bit_count(&b
, srcs
[0]);
1507 case ir_unop_find_msb
:
1509 case GLSL_TYPE_UINT
:
1510 result
= nir_ufind_msb(&b
, srcs
[0]);
1513 result
= nir_ifind_msb(&b
, srcs
[0]);
1516 unreachable("Invalid type for findMSB()");
1519 case ir_unop_find_lsb
:
1520 result
= nir_find_lsb(&b
, srcs
[0]);
1524 switch (ir
->type
->vector_elements
) {
1526 switch (ir
->operands
[0]->type
->vector_elements
) {
1527 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1528 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1529 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1530 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1531 default: unreachable("not reached");
1535 switch (ir
->operands
[0]->type
->vector_elements
) {
1536 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1537 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1538 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1539 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1540 default: unreachable("not reached");
1544 switch (ir
->operands
[0]->type
->vector_elements
) {
1545 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1546 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1547 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1548 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1549 default: unreachable("not reached");
1553 switch (ir
->operands
[0]->type
->vector_elements
) {
1554 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1555 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1556 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1557 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1558 default: unreachable("not reached");
1562 unreachable("not reached");
1565 case ir_unop_get_buffer_size
: {
1566 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1568 nir_intrinsic_get_buffer_size
);
1569 load
->num_components
= ir
->type
->vector_elements
;
1570 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1571 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1572 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1577 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1578 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1581 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1582 : nir_isub(&b
, srcs
[0], srcs
[1]);
1585 result
= type_is_float(out_type
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1586 : nir_imul(&b
, srcs
[0], srcs
[1]);
1589 if (type_is_float(out_type
))
1590 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1591 else if (out_type
== GLSL_TYPE_INT
)
1592 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1594 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1597 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1598 : nir_umod(&b
, srcs
[0], srcs
[1]);
1601 if (type_is_float(out_type
))
1602 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1603 else if (out_type
== GLSL_TYPE_INT
)
1604 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1606 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1609 if (type_is_float(out_type
))
1610 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1611 else if (out_type
== GLSL_TYPE_INT
)
1612 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1614 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1616 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1617 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1618 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1619 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1620 case ir_binop_logic_and
:
1621 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1622 : nir_fand(&b
, srcs
[0], srcs
[1]);
1624 case ir_binop_logic_or
:
1625 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1626 : nir_for(&b
, srcs
[0], srcs
[1]);
1628 case ir_binop_logic_xor
:
1629 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1630 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1632 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1633 case ir_binop_rshift
:
1634 result
= (out_type
== GLSL_TYPE_INT
) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1635 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1637 case ir_binop_imul_high
:
1638 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1639 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1641 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1642 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1644 if (supports_ints
) {
1645 if (type_is_float(types
[0]))
1646 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1647 else if (types
[0] == GLSL_TYPE_INT
)
1648 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1650 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1652 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1655 case ir_binop_greater
:
1656 if (supports_ints
) {
1657 if (type_is_float(types
[0]))
1658 result
= nir_flt(&b
, srcs
[1], srcs
[0]);
1659 else if (types
[0] == GLSL_TYPE_INT
)
1660 result
= nir_ilt(&b
, srcs
[1], srcs
[0]);
1662 result
= nir_ult(&b
, srcs
[1], srcs
[0]);
1664 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1667 case ir_binop_lequal
:
1668 if (supports_ints
) {
1669 if (type_is_float(types
[0]))
1670 result
= nir_fge(&b
, srcs
[1], srcs
[0]);
1671 else if (types
[0] == GLSL_TYPE_INT
)
1672 result
= nir_ige(&b
, srcs
[1], srcs
[0]);
1674 result
= nir_uge(&b
, srcs
[1], srcs
[0]);
1676 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1679 case ir_binop_gequal
:
1680 if (supports_ints
) {
1681 if (type_is_float(types
[0]))
1682 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1683 else if (types
[0] == GLSL_TYPE_INT
)
1684 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1686 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1688 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1691 case ir_binop_equal
:
1692 if (supports_ints
) {
1693 if (type_is_float(types
[0]))
1694 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1696 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1698 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1701 case ir_binop_nequal
:
1702 if (supports_ints
) {
1703 if (type_is_float(types
[0]))
1704 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1706 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1708 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1711 case ir_binop_all_equal
:
1712 if (supports_ints
) {
1713 if (type_is_float(types
[0])) {
1714 switch (ir
->operands
[0]->type
->vector_elements
) {
1715 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1716 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1717 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1718 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1720 unreachable("not reached");
1723 switch (ir
->operands
[0]->type
->vector_elements
) {
1724 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1725 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1726 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1727 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1729 unreachable("not reached");
1733 switch (ir
->operands
[0]->type
->vector_elements
) {
1734 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1735 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1736 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1737 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1739 unreachable("not reached");
1743 case ir_binop_any_nequal
:
1744 if (supports_ints
) {
1745 if (type_is_float(types
[0])) {
1746 switch (ir
->operands
[0]->type
->vector_elements
) {
1747 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1748 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1749 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1750 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1752 unreachable("not reached");
1755 switch (ir
->operands
[0]->type
->vector_elements
) {
1756 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1757 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1758 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1759 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1761 unreachable("not reached");
1765 switch (ir
->operands
[0]->type
->vector_elements
) {
1766 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1767 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1768 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1769 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1771 unreachable("not reached");
1776 switch (ir
->operands
[0]->type
->vector_elements
) {
1777 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1778 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1779 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1781 unreachable("not reached");
1785 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1787 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1790 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1794 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1796 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1798 case ir_triop_bitfield_extract
:
1799 result
= (out_type
== GLSL_TYPE_INT
) ?
1800 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1801 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1803 case ir_quadop_bitfield_insert
:
1804 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1806 case ir_quadop_vector
:
1807 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1811 unreachable("not reached");
1816 nir_visitor::visit(ir_swizzle
*ir
)
1818 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1819 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1820 ir
->type
->vector_elements
, !supports_ints
);
1824 nir_visitor::visit(ir_texture
*ir
)
1831 num_srcs
= 1; /* coordinate */
1836 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1837 num_srcs
= 2; /* coordinate, bias/lod */
1841 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1847 if (ir
->lod_info
.lod
!= NULL
)
1848 num_srcs
= 2; /* coordinate, lod */
1850 num_srcs
= 1; /* coordinate */
1854 op
= nir_texop_txf_ms
;
1855 num_srcs
= 2; /* coordinate, sample_index */
1860 if (ir
->lod_info
.lod
!= NULL
)
1861 num_srcs
= 1; /* lod */
1868 num_srcs
= 1; /* coordinate */
1873 num_srcs
= 1; /* coordinate */
1876 case ir_query_levels
:
1877 op
= nir_texop_query_levels
;
1881 case ir_texture_samples
:
1882 op
= nir_texop_texture_samples
;
1886 case ir_samples_identical
:
1887 op
= nir_texop_samples_identical
;
1888 num_srcs
= 1; /* coordinate */
1892 unreachable("not reached");
1895 if (ir
->projector
!= NULL
)
1897 if (ir
->shadow_comparator
!= NULL
)
1899 if (ir
->offset
!= NULL
)
1902 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
1905 instr
->sampler_dim
=
1906 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
1907 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
1908 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
1909 if (instr
->is_shadow
)
1910 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
1911 switch (ir
->type
->base_type
) {
1912 case GLSL_TYPE_FLOAT
:
1913 instr
->dest_type
= nir_type_float
;
1916 instr
->dest_type
= nir_type_int
;
1918 case GLSL_TYPE_BOOL
:
1919 case GLSL_TYPE_UINT
:
1920 instr
->dest_type
= nir_type_uint
;
1923 unreachable("not reached");
1926 instr
->texture
= evaluate_deref(&instr
->instr
, ir
->sampler
);
1928 unsigned src_number
= 0;
1930 if (ir
->coordinate
!= NULL
) {
1931 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
1932 instr
->src
[src_number
].src
=
1933 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
1934 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
1938 if (ir
->projector
!= NULL
) {
1939 instr
->src
[src_number
].src
=
1940 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
1941 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
1945 if (ir
->shadow_comparator
!= NULL
) {
1946 instr
->src
[src_number
].src
=
1947 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparator
));
1948 instr
->src
[src_number
].src_type
= nir_tex_src_comparator
;
1952 if (ir
->offset
!= NULL
) {
1953 /* we don't support multiple offsets yet */
1954 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
1956 instr
->src
[src_number
].src
=
1957 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
1958 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
1964 instr
->src
[src_number
].src
=
1965 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
1966 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
1973 if (ir
->lod_info
.lod
!= NULL
) {
1974 instr
->src
[src_number
].src
=
1975 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
1976 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
1982 instr
->src
[src_number
].src
=
1983 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
1984 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
1986 instr
->src
[src_number
].src
=
1987 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
1988 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
1993 instr
->src
[src_number
].src
=
1994 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
1995 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2000 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2007 assert(src_number
== num_srcs
);
2009 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2010 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2014 nir_visitor::visit(ir_constant
*ir
)
2017 * We don't know if this variable is an array or struct that gets
2018 * dereferenced, so do the safe thing an make it a variable with a
2019 * constant initializer and return a dereference.
2023 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2024 var
->data
.read_only
= true;
2025 var
->constant_initializer
= constant_copy(ir
, var
);
2027 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2028 this->deref_tail
= &this->deref_head
->deref
;
2032 nir_visitor::visit(ir_dereference_variable
*ir
)
2034 struct hash_entry
*entry
=
2035 _mesa_hash_table_search(this->var_table
, ir
->var
);
2037 nir_variable
*var
= (nir_variable
*) entry
->data
;
2039 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2040 this->deref_head
= deref
;
2041 this->deref_tail
= &deref
->deref
;
2045 nir_visitor::visit(ir_dereference_record
*ir
)
2047 ir
->record
->accept(this);
2049 int field_index
= this->deref_tail
->type
->field_index(ir
->field
);
2050 assert(field_index
>= 0);
2052 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2053 deref
->deref
.type
= ir
->type
;
2054 this->deref_tail
->child
= &deref
->deref
;
2055 this->deref_tail
= &deref
->deref
;
2059 nir_visitor::visit(ir_dereference_array
*ir
)
2061 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2062 deref
->deref
.type
= ir
->type
;
2064 ir_constant
*const_index
= ir
->array_index
->as_constant();
2065 if (const_index
!= NULL
) {
2066 deref
->deref_array_type
= nir_deref_array_type_direct
;
2067 deref
->base_offset
= const_index
->value
.u
[0];
2069 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2071 nir_src_for_ssa(evaluate_rvalue(ir
->array_index
));
2074 ir
->array
->accept(this);
2076 this->deref_tail
->child
= &deref
->deref
;
2077 ralloc_steal(this->deref_tail
, deref
);
2078 this->deref_tail
= &deref
->deref
;
2082 nir_visitor::visit(ir_barrier
*)
2084 nir_intrinsic_instr
*instr
=
2085 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2086 nir_builder_instr_insert(&b
, &instr
->instr
);