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
->num_ubos
= sh
->NumUniformBlocks
;
154 shader
->info
->num_ssbos
= sh
->NumShaderStorageBlocks
;
155 shader
->info
->clip_distance_array_size
= sh
->Program
->ClipDistanceArraySize
;
156 shader
->info
->cull_distance_array_size
= sh
->Program
->CullDistanceArraySize
;
157 shader
->info
->separate_shader
= shader_prog
->SeparateShader
;
158 shader
->info
->has_transform_feedback_varyings
=
159 shader_prog
->TransformFeedback
.NumVarying
> 0;
164 nir_visitor::nir_visitor(nir_shader
*shader
)
166 this->supports_ints
= shader
->options
->native_integers
;
167 this->shader
= shader
;
168 this->is_global
= true;
169 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
170 _mesa_key_pointer_equal
);
171 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
172 _mesa_key_pointer_equal
);
176 this->deref_head
= NULL
;
177 this->deref_tail
= NULL
;
178 memset(&this->b
, 0, sizeof(this->b
));
181 nir_visitor::~nir_visitor()
183 _mesa_hash_table_destroy(this->var_table
, NULL
);
184 _mesa_hash_table_destroy(this->overload_table
, NULL
);
188 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
191 ralloc_steal(mem_ctx
, this->deref_head
);
192 return this->deref_head
;
195 static nir_constant
*
196 constant_copy(ir_constant
*ir
, void *mem_ctx
)
201 nir_constant
*ret
= ralloc(mem_ctx
, nir_constant
);
203 const unsigned rows
= ir
->type
->vector_elements
;
204 const unsigned cols
= ir
->type
->matrix_columns
;
207 ret
->num_elements
= 0;
208 switch (ir
->type
->base_type
) {
210 /* Only float base types can be matrices. */
213 for (unsigned r
= 0; r
< rows
; r
++)
214 ret
->values
[0].u32
[r
] = ir
->value
.u
[r
];
219 /* Only float base types can be matrices. */
222 for (unsigned r
= 0; r
< rows
; r
++)
223 ret
->values
[0].i32
[r
] = ir
->value
.i
[r
];
227 case GLSL_TYPE_FLOAT
:
228 for (unsigned c
= 0; c
< cols
; c
++) {
229 for (unsigned r
= 0; r
< rows
; r
++)
230 ret
->values
[c
].f32
[r
] = ir
->value
.f
[c
* rows
+ r
];
234 case GLSL_TYPE_DOUBLE
:
235 for (unsigned c
= 0; c
< cols
; c
++) {
236 for (unsigned r
= 0; r
< rows
; r
++)
237 ret
->values
[c
].f64
[r
] = ir
->value
.d
[c
* rows
+ r
];
242 /* Only float base types can be matrices. */
245 for (unsigned r
= 0; r
< rows
; r
++)
246 ret
->values
[0].u32
[r
] = ir
->value
.b
[r
] ? NIR_TRUE
: NIR_FALSE
;
250 case GLSL_TYPE_STRUCT
:
251 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
253 ret
->num_elements
= ir
->type
->length
;
256 foreach_in_list(ir_constant
, field
, &ir
->components
) {
257 ret
->elements
[i
] = constant_copy(field
, mem_ctx
);
262 case GLSL_TYPE_ARRAY
:
263 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
265 ret
->num_elements
= ir
->type
->length
;
267 for (i
= 0; i
< ir
->type
->length
; i
++)
268 ret
->elements
[i
] = constant_copy(ir
->array_elements
[i
], mem_ctx
);
272 unreachable("not reached");
279 nir_visitor::visit(ir_variable
*ir
)
281 nir_variable
*var
= ralloc(shader
, nir_variable
);
282 var
->type
= ir
->type
;
283 var
->name
= ralloc_strdup(var
, ir
->name
);
285 var
->data
.read_only
= ir
->data
.read_only
;
286 var
->data
.centroid
= ir
->data
.centroid
;
287 var
->data
.sample
= ir
->data
.sample
;
288 var
->data
.patch
= ir
->data
.patch
;
289 var
->data
.invariant
= ir
->data
.invariant
;
290 var
->data
.location
= ir
->data
.location
;
292 switch(ir
->data
.mode
) {
294 case ir_var_temporary
:
296 var
->data
.mode
= nir_var_global
;
298 var
->data
.mode
= nir_var_local
;
301 case ir_var_function_in
:
302 case ir_var_function_out
:
303 case ir_var_function_inout
:
304 case ir_var_const_in
:
305 var
->data
.mode
= nir_var_local
;
308 case ir_var_shader_in
:
309 if (shader
->stage
== MESA_SHADER_FRAGMENT
&&
310 ir
->data
.location
== VARYING_SLOT_FACE
) {
311 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
312 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
313 var
->data
.mode
= nir_var_system_value
;
314 } else if (shader
->stage
== MESA_SHADER_GEOMETRY
&&
315 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
316 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
317 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
318 var
->data
.mode
= nir_var_system_value
;
320 var
->data
.mode
= nir_var_shader_in
;
324 case ir_var_shader_out
:
325 var
->data
.mode
= nir_var_shader_out
;
329 var
->data
.mode
= nir_var_uniform
;
332 case ir_var_shader_storage
:
333 var
->data
.mode
= nir_var_shader_storage
;
336 case ir_var_system_value
:
337 var
->data
.mode
= nir_var_system_value
;
341 unreachable("not reached");
344 var
->data
.interpolation
= ir
->data
.interpolation
;
345 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
346 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
347 var
->data
.compact
= false;
348 var
->data
.location_frac
= ir
->data
.location_frac
;
350 switch (ir
->data
.depth_layout
) {
351 case ir_depth_layout_none
:
352 var
->data
.depth_layout
= nir_depth_layout_none
;
354 case ir_depth_layout_any
:
355 var
->data
.depth_layout
= nir_depth_layout_any
;
357 case ir_depth_layout_greater
:
358 var
->data
.depth_layout
= nir_depth_layout_greater
;
360 case ir_depth_layout_less
:
361 var
->data
.depth_layout
= nir_depth_layout_less
;
363 case ir_depth_layout_unchanged
:
364 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
367 unreachable("not reached");
370 var
->data
.index
= ir
->data
.index
;
371 var
->data
.binding
= ir
->data
.binding
;
372 var
->data
.offset
= ir
->data
.offset
;
373 var
->data
.image
.read_only
= ir
->data
.image_read_only
;
374 var
->data
.image
.write_only
= ir
->data
.image_write_only
;
375 var
->data
.image
.coherent
= ir
->data
.image_coherent
;
376 var
->data
.image
._volatile
= ir
->data
.image_volatile
;
377 var
->data
.image
.restrict_flag
= ir
->data
.image_restrict
;
378 var
->data
.image
.format
= ir
->data
.image_format
;
379 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
381 var
->num_state_slots
= ir
->get_num_state_slots();
382 if (var
->num_state_slots
> 0) {
383 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
384 var
->num_state_slots
);
386 ir_state_slot
*state_slots
= ir
->get_state_slots();
387 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
388 for (unsigned j
= 0; j
< 5; j
++)
389 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
390 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
393 var
->state_slots
= NULL
;
396 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
398 var
->interface_type
= ir
->get_interface_type();
400 if (var
->data
.mode
== nir_var_local
)
401 nir_function_impl_add_variable(impl
, var
);
403 nir_shader_add_variable(shader
, var
);
405 _mesa_hash_table_insert(var_table
, ir
, var
);
410 nir_function_visitor::visit_enter(ir_function
*ir
)
412 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
413 visitor
->create_function(sig
);
415 return visit_continue_with_parent
;
419 nir_visitor::create_function(ir_function_signature
*ir
)
421 if (ir
->is_intrinsic())
424 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
426 assert(ir
->parameters
.is_empty());
427 assert(ir
->return_type
== glsl_type::void_type
);
429 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
433 nir_visitor::visit(ir_function
*ir
)
435 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
440 nir_visitor::visit(ir_function_signature
*ir
)
442 if (ir
->is_intrinsic())
445 struct hash_entry
*entry
=
446 _mesa_hash_table_search(this->overload_table
, ir
);
449 nir_function
*func
= (nir_function
*) entry
->data
;
451 if (ir
->is_defined
) {
452 nir_function_impl
*impl
= nir_function_impl_create(func
);
455 assert(strcmp(func
->name
, "main") == 0);
456 assert(ir
->parameters
.is_empty());
457 assert(func
->return_type
== glsl_type::void_type
);
459 this->is_global
= false;
461 nir_builder_init(&b
, impl
);
462 b
.cursor
= nir_after_cf_list(&impl
->body
);
463 visit_exec_list(&ir
->body
, this);
465 this->is_global
= true;
472 nir_visitor::visit(ir_loop
*ir
)
474 nir_loop
*loop
= nir_loop_create(this->shader
);
475 nir_builder_cf_insert(&b
, &loop
->cf_node
);
477 b
.cursor
= nir_after_cf_list(&loop
->body
);
478 visit_exec_list(&ir
->body_instructions
, this);
479 b
.cursor
= nir_after_cf_node(&loop
->cf_node
);
483 nir_visitor::visit(ir_if
*ir
)
486 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
488 nir_if
*if_stmt
= nir_if_create(this->shader
);
489 if_stmt
->condition
= condition
;
490 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
492 b
.cursor
= nir_after_cf_list(&if_stmt
->then_list
);
493 visit_exec_list(&ir
->then_instructions
, this);
495 b
.cursor
= nir_after_cf_list(&if_stmt
->else_list
);
496 visit_exec_list(&ir
->else_instructions
, this);
498 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
502 nir_visitor::visit(ir_discard
*ir
)
505 * discards aren't treated as control flow, because before we lower them
506 * they can appear anywhere in the shader and the stuff after them may still
507 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
508 * discards will be immediately followed by a return.
511 nir_intrinsic_instr
*discard
;
513 discard
= nir_intrinsic_instr_create(this->shader
,
514 nir_intrinsic_discard_if
);
516 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
518 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
521 nir_builder_instr_insert(&b
, &discard
->instr
);
525 nir_visitor::visit(ir_emit_vertex
*ir
)
527 nir_intrinsic_instr
*instr
=
528 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
529 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
530 nir_builder_instr_insert(&b
, &instr
->instr
);
534 nir_visitor::visit(ir_end_primitive
*ir
)
536 nir_intrinsic_instr
*instr
=
537 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
538 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
539 nir_builder_instr_insert(&b
, &instr
->instr
);
543 nir_visitor::visit(ir_loop_jump
*ir
)
547 case ir_loop_jump::jump_break
:
548 type
= nir_jump_break
;
550 case ir_loop_jump::jump_continue
:
551 type
= nir_jump_continue
;
554 unreachable("not reached");
557 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
558 nir_builder_instr_insert(&b
, &instr
->instr
);
562 nir_visitor::visit(ir_return
*ir
)
564 if (ir
->value
!= NULL
) {
565 nir_intrinsic_instr
*copy
=
566 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
568 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
569 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
572 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
573 nir_builder_instr_insert(&b
, &instr
->instr
);
577 nir_visitor::visit(ir_call
*ir
)
579 if (ir
->callee
->is_intrinsic()) {
582 switch (ir
->callee
->intrinsic_id
) {
583 case ir_intrinsic_atomic_counter_read
:
584 op
= nir_intrinsic_atomic_counter_read_var
;
586 case ir_intrinsic_atomic_counter_increment
:
587 op
= nir_intrinsic_atomic_counter_inc_var
;
589 case ir_intrinsic_atomic_counter_predecrement
:
590 op
= nir_intrinsic_atomic_counter_dec_var
;
592 case ir_intrinsic_atomic_counter_add
:
593 op
= nir_intrinsic_atomic_counter_add_var
;
595 case ir_intrinsic_atomic_counter_and
:
596 op
= nir_intrinsic_atomic_counter_and_var
;
598 case ir_intrinsic_atomic_counter_or
:
599 op
= nir_intrinsic_atomic_counter_or_var
;
601 case ir_intrinsic_atomic_counter_xor
:
602 op
= nir_intrinsic_atomic_counter_xor_var
;
604 case ir_intrinsic_atomic_counter_min
:
605 op
= nir_intrinsic_atomic_counter_min_var
;
607 case ir_intrinsic_atomic_counter_max
:
608 op
= nir_intrinsic_atomic_counter_max_var
;
610 case ir_intrinsic_atomic_counter_exchange
:
611 op
= nir_intrinsic_atomic_counter_exchange_var
;
613 case ir_intrinsic_atomic_counter_comp_swap
:
614 op
= nir_intrinsic_atomic_counter_comp_swap_var
;
616 case ir_intrinsic_image_load
:
617 op
= nir_intrinsic_image_load
;
619 case ir_intrinsic_image_store
:
620 op
= nir_intrinsic_image_store
;
622 case ir_intrinsic_image_atomic_add
:
623 op
= nir_intrinsic_image_atomic_add
;
625 case ir_intrinsic_image_atomic_min
:
626 op
= nir_intrinsic_image_atomic_min
;
628 case ir_intrinsic_image_atomic_max
:
629 op
= nir_intrinsic_image_atomic_max
;
631 case ir_intrinsic_image_atomic_and
:
632 op
= nir_intrinsic_image_atomic_and
;
634 case ir_intrinsic_image_atomic_or
:
635 op
= nir_intrinsic_image_atomic_or
;
637 case ir_intrinsic_image_atomic_xor
:
638 op
= nir_intrinsic_image_atomic_xor
;
640 case ir_intrinsic_image_atomic_exchange
:
641 op
= nir_intrinsic_image_atomic_exchange
;
643 case ir_intrinsic_image_atomic_comp_swap
:
644 op
= nir_intrinsic_image_atomic_comp_swap
;
646 case ir_intrinsic_memory_barrier
:
647 op
= nir_intrinsic_memory_barrier
;
649 case ir_intrinsic_image_size
:
650 op
= nir_intrinsic_image_size
;
652 case ir_intrinsic_image_samples
:
653 op
= nir_intrinsic_image_samples
;
655 case ir_intrinsic_ssbo_store
:
656 op
= nir_intrinsic_store_ssbo
;
658 case ir_intrinsic_ssbo_load
:
659 op
= nir_intrinsic_load_ssbo
;
661 case ir_intrinsic_ssbo_atomic_add
:
662 op
= nir_intrinsic_ssbo_atomic_add
;
664 case ir_intrinsic_ssbo_atomic_and
:
665 op
= nir_intrinsic_ssbo_atomic_and
;
667 case ir_intrinsic_ssbo_atomic_or
:
668 op
= nir_intrinsic_ssbo_atomic_or
;
670 case ir_intrinsic_ssbo_atomic_xor
:
671 op
= nir_intrinsic_ssbo_atomic_xor
;
673 case ir_intrinsic_ssbo_atomic_min
:
674 assert(ir
->return_deref
);
675 if (ir
->return_deref
->type
== glsl_type::int_type
)
676 op
= nir_intrinsic_ssbo_atomic_imin
;
677 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
678 op
= nir_intrinsic_ssbo_atomic_umin
;
680 unreachable("Invalid type");
682 case ir_intrinsic_ssbo_atomic_max
:
683 assert(ir
->return_deref
);
684 if (ir
->return_deref
->type
== glsl_type::int_type
)
685 op
= nir_intrinsic_ssbo_atomic_imax
;
686 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
687 op
= nir_intrinsic_ssbo_atomic_umax
;
689 unreachable("Invalid type");
691 case ir_intrinsic_ssbo_atomic_exchange
:
692 op
= nir_intrinsic_ssbo_atomic_exchange
;
694 case ir_intrinsic_ssbo_atomic_comp_swap
:
695 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
697 case ir_intrinsic_shader_clock
:
698 op
= nir_intrinsic_shader_clock
;
700 case ir_intrinsic_group_memory_barrier
:
701 op
= nir_intrinsic_group_memory_barrier
;
703 case ir_intrinsic_memory_barrier_atomic_counter
:
704 op
= nir_intrinsic_memory_barrier_atomic_counter
;
706 case ir_intrinsic_memory_barrier_buffer
:
707 op
= nir_intrinsic_memory_barrier_buffer
;
709 case ir_intrinsic_memory_barrier_image
:
710 op
= nir_intrinsic_memory_barrier_image
;
712 case ir_intrinsic_memory_barrier_shared
:
713 op
= nir_intrinsic_memory_barrier_shared
;
715 case ir_intrinsic_shared_load
:
716 op
= nir_intrinsic_load_shared
;
718 case ir_intrinsic_shared_store
:
719 op
= nir_intrinsic_store_shared
;
721 case ir_intrinsic_shared_atomic_add
:
722 op
= nir_intrinsic_shared_atomic_add
;
724 case ir_intrinsic_shared_atomic_and
:
725 op
= nir_intrinsic_shared_atomic_and
;
727 case ir_intrinsic_shared_atomic_or
:
728 op
= nir_intrinsic_shared_atomic_or
;
730 case ir_intrinsic_shared_atomic_xor
:
731 op
= nir_intrinsic_shared_atomic_xor
;
733 case ir_intrinsic_shared_atomic_min
:
734 assert(ir
->return_deref
);
735 if (ir
->return_deref
->type
== glsl_type::int_type
)
736 op
= nir_intrinsic_shared_atomic_imin
;
737 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
738 op
= nir_intrinsic_shared_atomic_umin
;
740 unreachable("Invalid type");
742 case ir_intrinsic_shared_atomic_max
:
743 assert(ir
->return_deref
);
744 if (ir
->return_deref
->type
== glsl_type::int_type
)
745 op
= nir_intrinsic_shared_atomic_imax
;
746 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
747 op
= nir_intrinsic_shared_atomic_umax
;
749 unreachable("Invalid type");
751 case ir_intrinsic_shared_atomic_exchange
:
752 op
= nir_intrinsic_shared_atomic_exchange
;
754 case ir_intrinsic_shared_atomic_comp_swap
:
755 op
= nir_intrinsic_shared_atomic_comp_swap
;
758 unreachable("not reached");
761 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
762 nir_dest
*dest
= &instr
->dest
;
765 case nir_intrinsic_atomic_counter_read_var
:
766 case nir_intrinsic_atomic_counter_inc_var
:
767 case nir_intrinsic_atomic_counter_dec_var
:
768 case nir_intrinsic_atomic_counter_add_var
:
769 case nir_intrinsic_atomic_counter_min_var
:
770 case nir_intrinsic_atomic_counter_max_var
:
771 case nir_intrinsic_atomic_counter_and_var
:
772 case nir_intrinsic_atomic_counter_or_var
:
773 case nir_intrinsic_atomic_counter_xor_var
:
774 case nir_intrinsic_atomic_counter_exchange_var
:
775 case nir_intrinsic_atomic_counter_comp_swap_var
: {
776 /* Set the counter variable dereference. */
777 exec_node
*param
= ir
->actual_parameters
.get_head();
778 ir_dereference
*counter
= (ir_dereference
*)param
;
780 instr
->variables
[0] = evaluate_deref(&instr
->instr
, counter
);
781 param
= param
->get_next();
783 /* Set the intrinsic destination. */
784 if (ir
->return_deref
) {
785 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
788 /* Set the intrinsic parameters. */
789 if (!param
->is_tail_sentinel()) {
791 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
792 param
= param
->get_next();
795 if (!param
->is_tail_sentinel()) {
797 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
798 param
= param
->get_next();
801 nir_builder_instr_insert(&b
, &instr
->instr
);
804 case nir_intrinsic_image_load
:
805 case nir_intrinsic_image_store
:
806 case nir_intrinsic_image_atomic_add
:
807 case nir_intrinsic_image_atomic_min
:
808 case nir_intrinsic_image_atomic_max
:
809 case nir_intrinsic_image_atomic_and
:
810 case nir_intrinsic_image_atomic_or
:
811 case nir_intrinsic_image_atomic_xor
:
812 case nir_intrinsic_image_atomic_exchange
:
813 case nir_intrinsic_image_atomic_comp_swap
:
814 case nir_intrinsic_image_samples
:
815 case nir_intrinsic_image_size
: {
816 nir_ssa_undef_instr
*instr_undef
=
817 nir_ssa_undef_instr_create(shader
, 1, 32);
818 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
820 /* Set the image variable dereference. */
821 exec_node
*param
= ir
->actual_parameters
.get_head();
822 ir_dereference
*image
= (ir_dereference
*)param
;
823 const glsl_type
*type
=
824 image
->variable_referenced()->type
->without_array();
826 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
827 param
= param
->get_next();
829 /* Set the intrinsic destination. */
830 if (ir
->return_deref
) {
831 const nir_intrinsic_info
*info
=
832 &nir_intrinsic_infos
[instr
->intrinsic
];
833 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
834 info
->dest_components
, 32, NULL
);
837 if (op
== nir_intrinsic_image_size
||
838 op
== nir_intrinsic_image_samples
) {
839 nir_builder_instr_insert(&b
, &instr
->instr
);
843 /* Set the address argument, extending the coordinate vector to four
846 nir_ssa_def
*src_addr
=
847 evaluate_rvalue((ir_dereference
*)param
);
848 nir_ssa_def
*srcs
[4];
850 for (int i
= 0; i
< 4; i
++) {
851 if (i
< type
->coordinate_components())
852 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
854 srcs
[i
] = &instr_undef
->def
;
857 instr
->src
[0] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
858 param
= param
->get_next();
860 /* Set the sample argument, which is undefined for single-sample
863 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
865 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
866 param
= param
->get_next();
868 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
871 /* Set the intrinsic parameters. */
872 if (!param
->is_tail_sentinel()) {
874 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
875 param
= param
->get_next();
878 if (!param
->is_tail_sentinel()) {
880 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
881 param
= param
->get_next();
883 nir_builder_instr_insert(&b
, &instr
->instr
);
886 case nir_intrinsic_memory_barrier
:
887 case nir_intrinsic_group_memory_barrier
:
888 case nir_intrinsic_memory_barrier_atomic_counter
:
889 case nir_intrinsic_memory_barrier_buffer
:
890 case nir_intrinsic_memory_barrier_image
:
891 case nir_intrinsic_memory_barrier_shared
:
892 nir_builder_instr_insert(&b
, &instr
->instr
);
894 case nir_intrinsic_shader_clock
:
895 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
896 nir_builder_instr_insert(&b
, &instr
->instr
);
898 case nir_intrinsic_store_ssbo
: {
899 exec_node
*param
= ir
->actual_parameters
.get_head();
900 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
902 param
= param
->get_next();
903 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
905 param
= param
->get_next();
906 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
908 param
= param
->get_next();
909 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
912 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
913 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
914 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
915 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
916 instr
->num_components
= val
->type
->vector_elements
;
918 nir_builder_instr_insert(&b
, &instr
->instr
);
921 case nir_intrinsic_load_ssbo
: {
922 exec_node
*param
= ir
->actual_parameters
.get_head();
923 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
925 param
= param
->get_next();
926 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
928 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
929 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
931 const glsl_type
*type
= ir
->return_deref
->var
->type
;
932 instr
->num_components
= type
->vector_elements
;
934 /* Setup destination register */
935 unsigned bit_size
= glsl_get_bit_size(type
);
936 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
937 type
->vector_elements
, bit_size
, NULL
);
939 /* Insert the created nir instruction now since in the case of boolean
940 * result we will need to emit another instruction after it
942 nir_builder_instr_insert(&b
, &instr
->instr
);
945 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
946 * consider a true boolean to be ~0. Fix this up with a != 0
949 if (type
->base_type
== GLSL_TYPE_BOOL
) {
950 nir_alu_instr
*load_ssbo_compare
=
951 nir_alu_instr_create(shader
, nir_op_ine
);
952 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
953 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
954 load_ssbo_compare
->src
[1].src
=
955 nir_src_for_ssa(nir_imm_int(&b
, 0));
956 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
957 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
958 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
959 &load_ssbo_compare
->dest
.dest
,
960 type
->vector_elements
, bit_size
, NULL
);
961 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
962 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
963 dest
= &load_ssbo_compare
->dest
.dest
;
967 case nir_intrinsic_ssbo_atomic_add
:
968 case nir_intrinsic_ssbo_atomic_imin
:
969 case nir_intrinsic_ssbo_atomic_umin
:
970 case nir_intrinsic_ssbo_atomic_imax
:
971 case nir_intrinsic_ssbo_atomic_umax
:
972 case nir_intrinsic_ssbo_atomic_and
:
973 case nir_intrinsic_ssbo_atomic_or
:
974 case nir_intrinsic_ssbo_atomic_xor
:
975 case nir_intrinsic_ssbo_atomic_exchange
:
976 case nir_intrinsic_ssbo_atomic_comp_swap
: {
977 int param_count
= ir
->actual_parameters
.length();
978 assert(param_count
== 3 || param_count
== 4);
981 exec_node
*param
= ir
->actual_parameters
.get_head();
982 ir_instruction
*inst
= (ir_instruction
*) param
;
983 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
986 param
= param
->get_next();
987 inst
= (ir_instruction
*) param
;
988 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
990 /* data1 parameter (this is always present) */
991 param
= param
->get_next();
992 inst
= (ir_instruction
*) param
;
993 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
995 /* data2 parameter (only with atomic_comp_swap) */
996 if (param_count
== 4) {
997 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
998 param
= param
->get_next();
999 inst
= (ir_instruction
*) param
;
1000 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1004 assert(ir
->return_deref
);
1005 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1006 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1007 nir_builder_instr_insert(&b
, &instr
->instr
);
1010 case nir_intrinsic_load_shared
: {
1011 exec_node
*param
= ir
->actual_parameters
.get_head();
1012 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1014 nir_intrinsic_set_base(instr
, 0);
1015 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1017 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1018 instr
->num_components
= type
->vector_elements
;
1020 /* Setup destination register */
1021 unsigned bit_size
= glsl_get_bit_size(type
);
1022 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1023 type
->vector_elements
, bit_size
, NULL
);
1025 nir_builder_instr_insert(&b
, &instr
->instr
);
1028 case nir_intrinsic_store_shared
: {
1029 exec_node
*param
= ir
->actual_parameters
.get_head();
1030 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1032 param
= param
->get_next();
1033 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1035 param
= param
->get_next();
1036 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1039 nir_intrinsic_set_base(instr
, 0);
1040 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1042 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1044 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1045 instr
->num_components
= val
->type
->vector_elements
;
1047 nir_builder_instr_insert(&b
, &instr
->instr
);
1050 case nir_intrinsic_shared_atomic_add
:
1051 case nir_intrinsic_shared_atomic_imin
:
1052 case nir_intrinsic_shared_atomic_umin
:
1053 case nir_intrinsic_shared_atomic_imax
:
1054 case nir_intrinsic_shared_atomic_umax
:
1055 case nir_intrinsic_shared_atomic_and
:
1056 case nir_intrinsic_shared_atomic_or
:
1057 case nir_intrinsic_shared_atomic_xor
:
1058 case nir_intrinsic_shared_atomic_exchange
:
1059 case nir_intrinsic_shared_atomic_comp_swap
: {
1060 int param_count
= ir
->actual_parameters
.length();
1061 assert(param_count
== 2 || param_count
== 3);
1064 exec_node
*param
= ir
->actual_parameters
.get_head();
1065 ir_instruction
*inst
= (ir_instruction
*) param
;
1066 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1068 /* data1 parameter (this is always present) */
1069 param
= param
->get_next();
1070 inst
= (ir_instruction
*) param
;
1071 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1073 /* data2 parameter (only with atomic_comp_swap) */
1074 if (param_count
== 3) {
1075 assert(op
== nir_intrinsic_shared_atomic_comp_swap
);
1076 param
= param
->get_next();
1077 inst
= (ir_instruction
*) param
;
1079 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1083 assert(ir
->return_deref
);
1084 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1085 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1086 ir
->return_deref
->type
->vector_elements
,
1088 nir_builder_instr_insert(&b
, &instr
->instr
);
1092 unreachable("not reached");
1095 if (ir
->return_deref
) {
1096 nir_intrinsic_instr
*store_instr
=
1097 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
1098 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1099 nir_intrinsic_set_write_mask(store_instr
,
1100 (1 << store_instr
->num_components
) - 1);
1102 store_instr
->variables
[0] =
1103 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
1104 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
1106 nir_builder_instr_insert(&b
, &store_instr
->instr
);
1112 struct hash_entry
*entry
=
1113 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1115 nir_function
*callee
= (nir_function
*) entry
->data
;
1117 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
1120 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
1121 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
1125 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
1126 nir_builder_instr_insert(&b
, &instr
->instr
);
1130 nir_visitor::visit(ir_assignment
*ir
)
1132 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1134 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1135 ir
->lhs
->variable_referenced()->data
.precise
;
1137 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1138 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1139 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1140 nir_intrinsic_instr
*copy
=
1141 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1143 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1144 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1146 if (ir
->condition
) {
1147 nir_if
*if_stmt
= nir_if_create(this->shader
);
1148 if_stmt
->condition
= nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
1149 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
1150 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, ©
->instr
);
1151 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
1153 nir_builder_instr_insert(&b
, ©
->instr
);
1158 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1160 ir
->lhs
->accept(this);
1161 nir_deref_var
*lhs_deref
= this->deref_head
;
1162 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1164 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1165 /* GLSL IR will give us the input to the write-masked assignment in a
1166 * single packed vector. So, for example, if the writemask is xzw, then
1167 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1171 unsigned component
= 0;
1172 for (unsigned i
= 0; i
< 4; i
++) {
1173 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1175 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1178 nir_intrinsic_instr
*store
=
1179 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1180 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1181 nir_intrinsic_set_write_mask(store
, ir
->write_mask
);
1182 nir_deref
*store_deref
= nir_copy_deref(store
, &lhs_deref
->deref
);
1183 store
->variables
[0] = nir_deref_as_var(store_deref
);
1184 store
->src
[0] = nir_src_for_ssa(src
);
1186 if (ir
->condition
) {
1187 nir_if
*if_stmt
= nir_if_create(this->shader
);
1188 if_stmt
->condition
= nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
1189 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
1190 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, &store
->instr
);
1191 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
1193 nir_builder_instr_insert(&b
, &store
->instr
);
1198 * Given an instruction, returns a pointer to its destination or NULL if there
1199 * is no destination.
1201 * Note that this only handles instructions we generate at this level.
1204 get_instr_dest(nir_instr
*instr
)
1206 nir_alu_instr
*alu_instr
;
1207 nir_intrinsic_instr
*intrinsic_instr
;
1208 nir_tex_instr
*tex_instr
;
1210 switch (instr
->type
) {
1211 case nir_instr_type_alu
:
1212 alu_instr
= nir_instr_as_alu(instr
);
1213 return &alu_instr
->dest
.dest
;
1215 case nir_instr_type_intrinsic
:
1216 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1217 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1218 return &intrinsic_instr
->dest
;
1222 case nir_instr_type_tex
:
1223 tex_instr
= nir_instr_as_tex(instr
);
1224 return &tex_instr
->dest
;
1227 unreachable("not reached");
1234 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1237 nir_dest
*dest
= get_instr_dest(instr
);
1240 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1242 nir_builder_instr_insert(&b
, instr
);
1245 assert(dest
->is_ssa
);
1246 this->result
= &dest
->ssa
;
1251 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1254 if (ir
->as_dereference() || ir
->as_constant()) {
1256 * A dereference is being used on the right hand side, which means we
1257 * must emit a variable load.
1260 nir_intrinsic_instr
*load_instr
=
1261 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1262 load_instr
->num_components
= ir
->type
->vector_elements
;
1263 load_instr
->variables
[0] = this->deref_head
;
1264 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1265 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1266 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
, bit_size
);
1269 return this->result
;
1273 type_is_float(glsl_base_type type
)
1275 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
;
1279 nir_visitor::visit(ir_expression
*ir
)
1281 /* Some special cases */
1282 switch (ir
->operation
) {
1283 case ir_binop_ubo_load
: {
1284 nir_intrinsic_instr
*load
=
1285 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1286 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1287 load
->num_components
= ir
->type
->vector_elements
;
1288 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1289 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1290 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1293 * In UBO's, a true boolean value is any non-zero value, but we consider
1294 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1297 if (ir
->type
->base_type
== GLSL_TYPE_BOOL
)
1298 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1303 case ir_unop_interpolate_at_centroid
:
1304 case ir_binop_interpolate_at_offset
:
1305 case ir_binop_interpolate_at_sample
: {
1306 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1307 ir_swizzle
*swizzle
= NULL
;
1309 /* the api does not allow a swizzle here, but the varying packing code
1310 * may have pushed one into here.
1312 swizzle
= ir
->operands
[0]->as_swizzle();
1314 deref
= swizzle
->val
->as_dereference();
1318 deref
->accept(this);
1320 nir_intrinsic_op op
;
1321 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1322 switch (ir
->operation
) {
1323 case ir_unop_interpolate_at_centroid
:
1324 op
= nir_intrinsic_interp_var_at_centroid
;
1326 case ir_binop_interpolate_at_offset
:
1327 op
= nir_intrinsic_interp_var_at_offset
;
1329 case ir_binop_interpolate_at_sample
:
1330 op
= nir_intrinsic_interp_var_at_sample
;
1333 unreachable("Invalid interpolation intrinsic");
1336 /* This case can happen if the vertex shader does not write the
1337 * given varying. In this case, the linker will lower it to a
1338 * global variable. Since interpolating a variable makes no
1339 * sense, we'll just turn it into a load which will probably
1340 * eventually end up as an SSA definition.
1342 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1343 op
= nir_intrinsic_load_var
;
1346 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1347 intrin
->num_components
= deref
->type
->vector_elements
;
1348 intrin
->variables
[0] = this->deref_head
;
1349 ralloc_steal(intrin
, intrin
->variables
[0]);
1351 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1352 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1353 intrin
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1355 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1356 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1359 unsigned swiz
[4] = {
1360 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1363 result
= nir_swizzle(&b
, result
, swiz
,
1364 swizzle
->type
->vector_elements
, false);
1374 nir_ssa_def
*srcs
[4];
1375 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1376 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1378 glsl_base_type types
[4];
1379 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1381 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1383 types
[i
] = GLSL_TYPE_FLOAT
;
1385 glsl_base_type out_type
;
1387 out_type
= ir
->type
->base_type
;
1389 out_type
= GLSL_TYPE_FLOAT
;
1391 switch (ir
->operation
) {
1392 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1393 case ir_unop_logic_not
:
1394 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1397 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1398 : nir_ineg(&b
, srcs
[0]);
1401 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1402 : nir_iabs(&b
, srcs
[0]);
1404 case ir_unop_saturate
:
1405 assert(type_is_float(types
[0]));
1406 result
= nir_fsat(&b
, srcs
[0]);
1409 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1410 : nir_isign(&b
, srcs
[0]);
1412 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1413 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1414 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1415 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1416 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1417 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1418 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1420 result
= supports_ints
? nir_i2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1423 result
= supports_ints
? nir_u2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1426 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1428 case ir_unop_f2i
: result
= nir_f2i(&b
, srcs
[0]); break;
1429 case ir_unop_f2u
: result
= nir_f2u(&b
, srcs
[0]); break;
1430 case ir_unop_f2b
: result
= nir_f2b(&b
, srcs
[0]); break;
1431 case ir_unop_i2b
: result
= nir_i2b(&b
, srcs
[0]); break;
1432 case ir_unop_b2i
: result
= nir_b2i(&b
, srcs
[0]); break;
1433 case ir_unop_d2f
: result
= nir_d2f(&b
, srcs
[0]); break;
1434 case ir_unop_f2d
: result
= nir_f2d(&b
, srcs
[0]); break;
1435 case ir_unop_d2i
: result
= nir_d2i(&b
, srcs
[0]); break;
1436 case ir_unop_d2u
: result
= nir_d2u(&b
, srcs
[0]); break;
1437 case ir_unop_d2b
: result
= nir_d2b(&b
, srcs
[0]); break;
1439 assert(supports_ints
);
1440 result
= nir_i2d(&b
, srcs
[0]);
1443 assert(supports_ints
);
1444 result
= nir_u2d(&b
, srcs
[0]);
1448 case ir_unop_bitcast_i2f
:
1449 case ir_unop_bitcast_f2i
:
1450 case ir_unop_bitcast_u2f
:
1451 case ir_unop_bitcast_f2u
:
1452 case ir_unop_subroutine_to_int
:
1454 result
= nir_imov(&b
, srcs
[0]);
1456 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1457 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1458 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1459 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1460 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1461 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1462 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1463 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1464 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1465 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1466 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1467 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1468 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1469 case ir_unop_pack_snorm_2x16
:
1470 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1472 case ir_unop_pack_snorm_4x8
:
1473 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1475 case ir_unop_pack_unorm_2x16
:
1476 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1478 case ir_unop_pack_unorm_4x8
:
1479 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1481 case ir_unop_pack_half_2x16
:
1482 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1484 case ir_unop_unpack_snorm_2x16
:
1485 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1487 case ir_unop_unpack_snorm_4x8
:
1488 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1490 case ir_unop_unpack_unorm_2x16
:
1491 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1493 case ir_unop_unpack_unorm_4x8
:
1494 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1496 case ir_unop_unpack_half_2x16
:
1497 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1499 case ir_unop_pack_double_2x32
:
1500 result
= nir_pack_double_2x32(&b
, srcs
[0]);
1502 case ir_unop_unpack_double_2x32
:
1503 result
= nir_unpack_double_2x32(&b
, srcs
[0]);
1505 case ir_unop_bitfield_reverse
:
1506 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1508 case ir_unop_bit_count
:
1509 result
= nir_bit_count(&b
, srcs
[0]);
1511 case ir_unop_find_msb
:
1513 case GLSL_TYPE_UINT
:
1514 result
= nir_ufind_msb(&b
, srcs
[0]);
1517 result
= nir_ifind_msb(&b
, srcs
[0]);
1520 unreachable("Invalid type for findMSB()");
1523 case ir_unop_find_lsb
:
1524 result
= nir_find_lsb(&b
, srcs
[0]);
1528 switch (ir
->type
->vector_elements
) {
1530 switch (ir
->operands
[0]->type
->vector_elements
) {
1531 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1532 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1533 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1534 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1535 default: unreachable("not reached");
1539 switch (ir
->operands
[0]->type
->vector_elements
) {
1540 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1541 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1542 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1543 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1544 default: unreachable("not reached");
1548 switch (ir
->operands
[0]->type
->vector_elements
) {
1549 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1550 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1551 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1552 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1553 default: unreachable("not reached");
1557 switch (ir
->operands
[0]->type
->vector_elements
) {
1558 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1559 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1560 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1561 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1562 default: unreachable("not reached");
1566 unreachable("not reached");
1569 case ir_unop_get_buffer_size
: {
1570 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1572 nir_intrinsic_get_buffer_size
);
1573 load
->num_components
= ir
->type
->vector_elements
;
1574 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1575 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1576 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1581 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1582 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1585 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1586 : nir_isub(&b
, srcs
[0], srcs
[1]);
1589 result
= type_is_float(out_type
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1590 : nir_imul(&b
, srcs
[0], srcs
[1]);
1593 if (type_is_float(out_type
))
1594 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1595 else if (out_type
== GLSL_TYPE_INT
)
1596 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1598 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1601 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1602 : nir_umod(&b
, srcs
[0], srcs
[1]);
1605 if (type_is_float(out_type
))
1606 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1607 else if (out_type
== GLSL_TYPE_INT
)
1608 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1610 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1613 if (type_is_float(out_type
))
1614 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1615 else if (out_type
== GLSL_TYPE_INT
)
1616 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1618 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1620 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1621 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1622 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1623 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1624 case ir_binop_logic_and
:
1625 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1626 : nir_fand(&b
, srcs
[0], srcs
[1]);
1628 case ir_binop_logic_or
:
1629 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1630 : nir_for(&b
, srcs
[0], srcs
[1]);
1632 case ir_binop_logic_xor
:
1633 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1634 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1636 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1637 case ir_binop_rshift
:
1638 result
= (out_type
== GLSL_TYPE_INT
) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1639 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1641 case ir_binop_imul_high
:
1642 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1643 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1645 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1646 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1648 if (supports_ints
) {
1649 if (type_is_float(types
[0]))
1650 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1651 else if (types
[0] == GLSL_TYPE_INT
)
1652 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1654 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1656 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1659 case ir_binop_greater
:
1660 if (supports_ints
) {
1661 if (type_is_float(types
[0]))
1662 result
= nir_flt(&b
, srcs
[1], srcs
[0]);
1663 else if (types
[0] == GLSL_TYPE_INT
)
1664 result
= nir_ilt(&b
, srcs
[1], srcs
[0]);
1666 result
= nir_ult(&b
, srcs
[1], srcs
[0]);
1668 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1671 case ir_binop_lequal
:
1672 if (supports_ints
) {
1673 if (type_is_float(types
[0]))
1674 result
= nir_fge(&b
, srcs
[1], srcs
[0]);
1675 else if (types
[0] == GLSL_TYPE_INT
)
1676 result
= nir_ige(&b
, srcs
[1], srcs
[0]);
1678 result
= nir_uge(&b
, srcs
[1], srcs
[0]);
1680 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1683 case ir_binop_gequal
:
1684 if (supports_ints
) {
1685 if (type_is_float(types
[0]))
1686 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1687 else if (types
[0] == GLSL_TYPE_INT
)
1688 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1690 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1692 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1695 case ir_binop_equal
:
1696 if (supports_ints
) {
1697 if (type_is_float(types
[0]))
1698 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1700 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1702 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1705 case ir_binop_nequal
:
1706 if (supports_ints
) {
1707 if (type_is_float(types
[0]))
1708 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1710 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1712 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1715 case ir_binop_all_equal
:
1716 if (supports_ints
) {
1717 if (type_is_float(types
[0])) {
1718 switch (ir
->operands
[0]->type
->vector_elements
) {
1719 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1720 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1721 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1722 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1724 unreachable("not reached");
1727 switch (ir
->operands
[0]->type
->vector_elements
) {
1728 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1729 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1730 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1731 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1733 unreachable("not reached");
1737 switch (ir
->operands
[0]->type
->vector_elements
) {
1738 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1739 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1740 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1741 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1743 unreachable("not reached");
1747 case ir_binop_any_nequal
:
1748 if (supports_ints
) {
1749 if (type_is_float(types
[0])) {
1750 switch (ir
->operands
[0]->type
->vector_elements
) {
1751 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1752 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1753 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1754 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1756 unreachable("not reached");
1759 switch (ir
->operands
[0]->type
->vector_elements
) {
1760 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1761 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1762 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1763 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1765 unreachable("not reached");
1769 switch (ir
->operands
[0]->type
->vector_elements
) {
1770 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1771 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1772 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1773 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1775 unreachable("not reached");
1780 switch (ir
->operands
[0]->type
->vector_elements
) {
1781 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1782 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1783 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1785 unreachable("not reached");
1789 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1791 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1794 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1798 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1800 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1802 case ir_triop_bitfield_extract
:
1803 result
= (out_type
== GLSL_TYPE_INT
) ?
1804 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1805 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1807 case ir_quadop_bitfield_insert
:
1808 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1810 case ir_quadop_vector
:
1811 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1815 unreachable("not reached");
1820 nir_visitor::visit(ir_swizzle
*ir
)
1822 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1823 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1824 ir
->type
->vector_elements
, !supports_ints
);
1828 nir_visitor::visit(ir_texture
*ir
)
1835 num_srcs
= 1; /* coordinate */
1840 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1841 num_srcs
= 2; /* coordinate, bias/lod */
1845 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1851 if (ir
->lod_info
.lod
!= NULL
)
1852 num_srcs
= 2; /* coordinate, lod */
1854 num_srcs
= 1; /* coordinate */
1858 op
= nir_texop_txf_ms
;
1859 num_srcs
= 2; /* coordinate, sample_index */
1864 if (ir
->lod_info
.lod
!= NULL
)
1865 num_srcs
= 1; /* lod */
1872 num_srcs
= 1; /* coordinate */
1877 num_srcs
= 1; /* coordinate */
1880 case ir_query_levels
:
1881 op
= nir_texop_query_levels
;
1885 case ir_texture_samples
:
1886 op
= nir_texop_texture_samples
;
1890 case ir_samples_identical
:
1891 op
= nir_texop_samples_identical
;
1892 num_srcs
= 1; /* coordinate */
1896 unreachable("not reached");
1899 if (ir
->projector
!= NULL
)
1901 if (ir
->shadow_comparitor
!= NULL
)
1903 if (ir
->offset
!= NULL
)
1906 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
1909 instr
->sampler_dim
=
1910 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
1911 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
1912 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
1913 if (instr
->is_shadow
)
1914 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
1915 switch (ir
->type
->base_type
) {
1916 case GLSL_TYPE_FLOAT
:
1917 instr
->dest_type
= nir_type_float
;
1920 instr
->dest_type
= nir_type_int
;
1922 case GLSL_TYPE_BOOL
:
1923 case GLSL_TYPE_UINT
:
1924 instr
->dest_type
= nir_type_uint
;
1927 unreachable("not reached");
1930 instr
->texture
= evaluate_deref(&instr
->instr
, ir
->sampler
);
1932 unsigned src_number
= 0;
1934 if (ir
->coordinate
!= NULL
) {
1935 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
1936 instr
->src
[src_number
].src
=
1937 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
1938 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
1942 if (ir
->projector
!= NULL
) {
1943 instr
->src
[src_number
].src
=
1944 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
1945 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
1949 if (ir
->shadow_comparitor
!= NULL
) {
1950 instr
->src
[src_number
].src
=
1951 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparitor
));
1952 instr
->src
[src_number
].src_type
= nir_tex_src_comparitor
;
1956 if (ir
->offset
!= NULL
) {
1957 /* we don't support multiple offsets yet */
1958 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
1960 instr
->src
[src_number
].src
=
1961 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
1962 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
1968 instr
->src
[src_number
].src
=
1969 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
1970 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
1977 if (ir
->lod_info
.lod
!= NULL
) {
1978 instr
->src
[src_number
].src
=
1979 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
1980 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
1986 instr
->src
[src_number
].src
=
1987 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
1988 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
1990 instr
->src
[src_number
].src
=
1991 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
1992 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
1997 instr
->src
[src_number
].src
=
1998 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
1999 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2004 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2011 assert(src_number
== num_srcs
);
2013 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2014 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2018 nir_visitor::visit(ir_constant
*ir
)
2021 * We don't know if this variable is an array or struct that gets
2022 * dereferenced, so do the safe thing an make it a variable with a
2023 * constant initializer and return a dereference.
2027 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2028 var
->data
.read_only
= true;
2029 var
->constant_initializer
= constant_copy(ir
, var
);
2031 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2032 this->deref_tail
= &this->deref_head
->deref
;
2036 nir_visitor::visit(ir_dereference_variable
*ir
)
2038 struct hash_entry
*entry
=
2039 _mesa_hash_table_search(this->var_table
, ir
->var
);
2041 nir_variable
*var
= (nir_variable
*) entry
->data
;
2043 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2044 this->deref_head
= deref
;
2045 this->deref_tail
= &deref
->deref
;
2049 nir_visitor::visit(ir_dereference_record
*ir
)
2051 ir
->record
->accept(this);
2053 int field_index
= this->deref_tail
->type
->field_index(ir
->field
);
2054 assert(field_index
>= 0);
2056 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2057 deref
->deref
.type
= ir
->type
;
2058 this->deref_tail
->child
= &deref
->deref
;
2059 this->deref_tail
= &deref
->deref
;
2063 nir_visitor::visit(ir_dereference_array
*ir
)
2065 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2066 deref
->deref
.type
= ir
->type
;
2068 ir_constant
*const_index
= ir
->array_index
->as_constant();
2069 if (const_index
!= NULL
) {
2070 deref
->deref_array_type
= nir_deref_array_type_direct
;
2071 deref
->base_offset
= const_index
->value
.u
[0];
2073 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2075 nir_src_for_ssa(evaluate_rvalue(ir
->array_index
));
2078 ir
->array
->accept(this);
2080 this->deref_tail
->child
= &deref
->deref
;
2081 ralloc_steal(this->deref_tail
, deref
);
2082 this->deref_tail
= &deref
->deref
;
2086 nir_visitor::visit(ir_barrier
*)
2088 nir_intrinsic_instr
*instr
=
2089 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2090 nir_builder_instr_insert(&b
, &instr
->instr
);