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 shader
->info
->name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
148 if (shader_prog
->Label
)
149 shader
->info
->label
= ralloc_strdup(shader
, shader_prog
->Label
);
150 shader
->info
->num_textures
= util_last_bit(sh
->Program
->SamplersUsed
);
151 shader
->info
->num_ubos
= sh
->NumUniformBlocks
;
152 shader
->info
->num_ssbos
= sh
->NumShaderStorageBlocks
;
153 shader
->info
->clip_distance_array_size
= sh
->Program
->ClipDistanceArraySize
;
154 shader
->info
->cull_distance_array_size
= sh
->Program
->CullDistanceArraySize
;
155 shader
->info
->separate_shader
= shader_prog
->SeparateShader
;
156 shader
->info
->has_transform_feedback_varyings
=
157 shader_prog
->TransformFeedback
.NumVarying
> 0;
162 nir_visitor::nir_visitor(nir_shader
*shader
)
164 this->supports_ints
= shader
->options
->native_integers
;
165 this->shader
= shader
;
166 this->is_global
= true;
167 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
168 _mesa_key_pointer_equal
);
169 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
170 _mesa_key_pointer_equal
);
174 this->deref_head
= NULL
;
175 this->deref_tail
= NULL
;
176 memset(&this->b
, 0, sizeof(this->b
));
179 nir_visitor::~nir_visitor()
181 _mesa_hash_table_destroy(this->var_table
, NULL
);
182 _mesa_hash_table_destroy(this->overload_table
, NULL
);
186 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
189 ralloc_steal(mem_ctx
, this->deref_head
);
190 return this->deref_head
;
193 static nir_constant
*
194 constant_copy(ir_constant
*ir
, void *mem_ctx
)
199 nir_constant
*ret
= ralloc(mem_ctx
, nir_constant
);
201 unsigned total_elems
= ir
->type
->components();
204 ret
->num_elements
= 0;
205 switch (ir
->type
->base_type
) {
207 for (i
= 0; i
< total_elems
; i
++)
208 ret
->value
.u
[i
] = ir
->value
.u
[i
];
212 for (i
= 0; i
< total_elems
; i
++)
213 ret
->value
.i
[i
] = ir
->value
.i
[i
];
216 case GLSL_TYPE_FLOAT
:
217 for (i
= 0; i
< total_elems
; i
++)
218 ret
->value
.f
[i
] = ir
->value
.f
[i
];
221 case GLSL_TYPE_DOUBLE
:
222 for (i
= 0; i
< total_elems
; i
++)
223 ret
->value
.d
[i
] = ir
->value
.d
[i
];
227 for (i
= 0; i
< total_elems
; i
++)
228 ret
->value
.b
[i
] = ir
->value
.b
[i
];
231 case GLSL_TYPE_STRUCT
:
232 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
234 ret
->num_elements
= ir
->type
->length
;
237 foreach_in_list(ir_constant
, field
, &ir
->components
) {
238 ret
->elements
[i
] = constant_copy(field
, mem_ctx
);
243 case GLSL_TYPE_ARRAY
:
244 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
246 ret
->num_elements
= ir
->type
->length
;
248 for (i
= 0; i
< ir
->type
->length
; i
++)
249 ret
->elements
[i
] = constant_copy(ir
->array_elements
[i
], mem_ctx
);
253 unreachable("not reached");
260 nir_visitor::visit(ir_variable
*ir
)
262 nir_variable
*var
= ralloc(shader
, nir_variable
);
263 var
->type
= ir
->type
;
264 var
->name
= ralloc_strdup(var
, ir
->name
);
266 var
->data
.read_only
= ir
->data
.read_only
;
267 var
->data
.centroid
= ir
->data
.centroid
;
268 var
->data
.sample
= ir
->data
.sample
;
269 var
->data
.patch
= ir
->data
.patch
;
270 var
->data
.invariant
= ir
->data
.invariant
;
271 var
->data
.location
= ir
->data
.location
;
273 switch(ir
->data
.mode
) {
275 case ir_var_temporary
:
277 var
->data
.mode
= nir_var_global
;
279 var
->data
.mode
= nir_var_local
;
282 case ir_var_function_in
:
283 case ir_var_function_out
:
284 case ir_var_function_inout
:
285 case ir_var_const_in
:
286 var
->data
.mode
= nir_var_local
;
289 case ir_var_shader_in
:
290 if (shader
->stage
== MESA_SHADER_FRAGMENT
&&
291 ir
->data
.location
== VARYING_SLOT_FACE
) {
292 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
293 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
294 var
->data
.mode
= nir_var_system_value
;
295 } else if (shader
->stage
== MESA_SHADER_GEOMETRY
&&
296 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
297 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
298 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
299 var
->data
.mode
= nir_var_system_value
;
301 var
->data
.mode
= nir_var_shader_in
;
305 case ir_var_shader_out
:
306 var
->data
.mode
= nir_var_shader_out
;
310 var
->data
.mode
= nir_var_uniform
;
313 case ir_var_shader_storage
:
314 var
->data
.mode
= nir_var_shader_storage
;
317 case ir_var_system_value
:
318 var
->data
.mode
= nir_var_system_value
;
322 unreachable("not reached");
325 var
->data
.interpolation
= ir
->data
.interpolation
;
326 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
327 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
328 var
->data
.explicit_location
= ir
->data
.explicit_location
;
329 var
->data
.explicit_index
= ir
->data
.explicit_index
;
330 var
->data
.explicit_binding
= ir
->data
.explicit_binding
;
331 var
->data
.has_initializer
= ir
->data
.has_initializer
;
332 var
->data
.location_frac
= ir
->data
.location_frac
;
334 switch (ir
->data
.depth_layout
) {
335 case ir_depth_layout_none
:
336 var
->data
.depth_layout
= nir_depth_layout_none
;
338 case ir_depth_layout_any
:
339 var
->data
.depth_layout
= nir_depth_layout_any
;
341 case ir_depth_layout_greater
:
342 var
->data
.depth_layout
= nir_depth_layout_greater
;
344 case ir_depth_layout_less
:
345 var
->data
.depth_layout
= nir_depth_layout_less
;
347 case ir_depth_layout_unchanged
:
348 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
351 unreachable("not reached");
354 var
->data
.index
= ir
->data
.index
;
355 var
->data
.binding
= ir
->data
.binding
;
356 var
->data
.offset
= ir
->data
.offset
;
357 var
->data
.image
.read_only
= ir
->data
.image_read_only
;
358 var
->data
.image
.write_only
= ir
->data
.image_write_only
;
359 var
->data
.image
.coherent
= ir
->data
.image_coherent
;
360 var
->data
.image
._volatile
= ir
->data
.image_volatile
;
361 var
->data
.image
.restrict_flag
= ir
->data
.image_restrict
;
362 var
->data
.image
.format
= ir
->data
.image_format
;
363 var
->data
.max_array_access
= ir
->data
.max_array_access
;
364 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
366 var
->num_state_slots
= ir
->get_num_state_slots();
367 if (var
->num_state_slots
> 0) {
368 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
369 var
->num_state_slots
);
371 ir_state_slot
*state_slots
= ir
->get_state_slots();
372 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
373 for (unsigned j
= 0; j
< 5; j
++)
374 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
375 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
378 var
->state_slots
= NULL
;
381 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
383 var
->interface_type
= ir
->get_interface_type();
385 if (var
->data
.mode
== nir_var_local
)
386 nir_function_impl_add_variable(impl
, var
);
388 nir_shader_add_variable(shader
, var
);
390 _mesa_hash_table_insert(var_table
, ir
, var
);
395 nir_function_visitor::visit_enter(ir_function
*ir
)
397 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
398 visitor
->create_function(sig
);
400 return visit_continue_with_parent
;
404 nir_visitor::create_function(ir_function_signature
*ir
)
406 if (ir
->is_intrinsic())
409 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
411 assert(ir
->parameters
.is_empty());
412 assert(ir
->return_type
== glsl_type::void_type
);
414 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
418 nir_visitor::visit(ir_function
*ir
)
420 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
425 nir_visitor::visit(ir_function_signature
*ir
)
427 if (ir
->is_intrinsic())
430 struct hash_entry
*entry
=
431 _mesa_hash_table_search(this->overload_table
, ir
);
434 nir_function
*func
= (nir_function
*) entry
->data
;
436 if (ir
->is_defined
) {
437 nir_function_impl
*impl
= nir_function_impl_create(func
);
440 assert(strcmp(func
->name
, "main") == 0);
441 assert(ir
->parameters
.is_empty());
442 assert(func
->return_type
== glsl_type::void_type
);
444 this->is_global
= false;
446 nir_builder_init(&b
, impl
);
447 b
.cursor
= nir_after_cf_list(&impl
->body
);
448 visit_exec_list(&ir
->body
, this);
450 this->is_global
= true;
457 nir_visitor::visit(ir_loop
*ir
)
459 nir_loop
*loop
= nir_loop_create(this->shader
);
460 nir_builder_cf_insert(&b
, &loop
->cf_node
);
462 b
.cursor
= nir_after_cf_list(&loop
->body
);
463 visit_exec_list(&ir
->body_instructions
, this);
464 b
.cursor
= nir_after_cf_node(&loop
->cf_node
);
468 nir_visitor::visit(ir_if
*ir
)
471 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
473 nir_if
*if_stmt
= nir_if_create(this->shader
);
474 if_stmt
->condition
= condition
;
475 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
477 b
.cursor
= nir_after_cf_list(&if_stmt
->then_list
);
478 visit_exec_list(&ir
->then_instructions
, this);
480 b
.cursor
= nir_after_cf_list(&if_stmt
->else_list
);
481 visit_exec_list(&ir
->else_instructions
, this);
483 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
487 nir_visitor::visit(ir_discard
*ir
)
490 * discards aren't treated as control flow, because before we lower them
491 * they can appear anywhere in the shader and the stuff after them may still
492 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
493 * discards will be immediately followed by a return.
496 nir_intrinsic_instr
*discard
;
498 discard
= nir_intrinsic_instr_create(this->shader
,
499 nir_intrinsic_discard_if
);
501 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
503 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
506 nir_builder_instr_insert(&b
, &discard
->instr
);
510 nir_visitor::visit(ir_emit_vertex
*ir
)
512 nir_intrinsic_instr
*instr
=
513 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
514 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
515 nir_builder_instr_insert(&b
, &instr
->instr
);
519 nir_visitor::visit(ir_end_primitive
*ir
)
521 nir_intrinsic_instr
*instr
=
522 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
523 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
524 nir_builder_instr_insert(&b
, &instr
->instr
);
528 nir_visitor::visit(ir_loop_jump
*ir
)
532 case ir_loop_jump::jump_break
:
533 type
= nir_jump_break
;
535 case ir_loop_jump::jump_continue
:
536 type
= nir_jump_continue
;
539 unreachable("not reached");
542 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
543 nir_builder_instr_insert(&b
, &instr
->instr
);
547 nir_visitor::visit(ir_return
*ir
)
549 if (ir
->value
!= NULL
) {
550 nir_intrinsic_instr
*copy
=
551 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
553 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
554 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
557 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
558 nir_builder_instr_insert(&b
, &instr
->instr
);
562 nir_visitor::visit(ir_call
*ir
)
564 if (ir
->callee
->is_intrinsic()) {
567 switch (ir
->callee
->intrinsic_id
) {
568 case ir_intrinsic_atomic_counter_read
:
569 op
= nir_intrinsic_atomic_counter_read_var
;
571 case ir_intrinsic_atomic_counter_increment
:
572 op
= nir_intrinsic_atomic_counter_inc_var
;
574 case ir_intrinsic_atomic_counter_predecrement
:
575 op
= nir_intrinsic_atomic_counter_dec_var
;
577 case ir_intrinsic_atomic_counter_add
:
578 op
= nir_intrinsic_atomic_counter_add_var
;
580 case ir_intrinsic_atomic_counter_and
:
581 op
= nir_intrinsic_atomic_counter_and_var
;
583 case ir_intrinsic_atomic_counter_or
:
584 op
= nir_intrinsic_atomic_counter_or_var
;
586 case ir_intrinsic_atomic_counter_xor
:
587 op
= nir_intrinsic_atomic_counter_xor_var
;
589 case ir_intrinsic_atomic_counter_min
:
590 op
= nir_intrinsic_atomic_counter_min_var
;
592 case ir_intrinsic_atomic_counter_max
:
593 op
= nir_intrinsic_atomic_counter_max_var
;
595 case ir_intrinsic_atomic_counter_exchange
:
596 op
= nir_intrinsic_atomic_counter_exchange_var
;
598 case ir_intrinsic_atomic_counter_comp_swap
:
599 op
= nir_intrinsic_atomic_counter_comp_swap_var
;
601 case ir_intrinsic_image_load
:
602 op
= nir_intrinsic_image_load
;
604 case ir_intrinsic_image_store
:
605 op
= nir_intrinsic_image_store
;
607 case ir_intrinsic_image_atomic_add
:
608 op
= nir_intrinsic_image_atomic_add
;
610 case ir_intrinsic_image_atomic_min
:
611 op
= nir_intrinsic_image_atomic_min
;
613 case ir_intrinsic_image_atomic_max
:
614 op
= nir_intrinsic_image_atomic_max
;
616 case ir_intrinsic_image_atomic_and
:
617 op
= nir_intrinsic_image_atomic_and
;
619 case ir_intrinsic_image_atomic_or
:
620 op
= nir_intrinsic_image_atomic_or
;
622 case ir_intrinsic_image_atomic_xor
:
623 op
= nir_intrinsic_image_atomic_xor
;
625 case ir_intrinsic_image_atomic_exchange
:
626 op
= nir_intrinsic_image_atomic_exchange
;
628 case ir_intrinsic_image_atomic_comp_swap
:
629 op
= nir_intrinsic_image_atomic_comp_swap
;
631 case ir_intrinsic_memory_barrier
:
632 op
= nir_intrinsic_memory_barrier
;
634 case ir_intrinsic_image_size
:
635 op
= nir_intrinsic_image_size
;
637 case ir_intrinsic_image_samples
:
638 op
= nir_intrinsic_image_samples
;
640 case ir_intrinsic_ssbo_store
:
641 op
= nir_intrinsic_store_ssbo
;
643 case ir_intrinsic_ssbo_load
:
644 op
= nir_intrinsic_load_ssbo
;
646 case ir_intrinsic_ssbo_atomic_add
:
647 op
= nir_intrinsic_ssbo_atomic_add
;
649 case ir_intrinsic_ssbo_atomic_and
:
650 op
= nir_intrinsic_ssbo_atomic_and
;
652 case ir_intrinsic_ssbo_atomic_or
:
653 op
= nir_intrinsic_ssbo_atomic_or
;
655 case ir_intrinsic_ssbo_atomic_xor
:
656 op
= nir_intrinsic_ssbo_atomic_xor
;
658 case ir_intrinsic_ssbo_atomic_min
:
659 assert(ir
->return_deref
);
660 if (ir
->return_deref
->type
== glsl_type::int_type
)
661 op
= nir_intrinsic_ssbo_atomic_imin
;
662 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
663 op
= nir_intrinsic_ssbo_atomic_umin
;
665 unreachable("Invalid type");
667 case ir_intrinsic_ssbo_atomic_max
:
668 assert(ir
->return_deref
);
669 if (ir
->return_deref
->type
== glsl_type::int_type
)
670 op
= nir_intrinsic_ssbo_atomic_imax
;
671 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
672 op
= nir_intrinsic_ssbo_atomic_umax
;
674 unreachable("Invalid type");
676 case ir_intrinsic_ssbo_atomic_exchange
:
677 op
= nir_intrinsic_ssbo_atomic_exchange
;
679 case ir_intrinsic_ssbo_atomic_comp_swap
:
680 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
682 case ir_intrinsic_shader_clock
:
683 op
= nir_intrinsic_shader_clock
;
685 case ir_intrinsic_group_memory_barrier
:
686 op
= nir_intrinsic_group_memory_barrier
;
688 case ir_intrinsic_memory_barrier_atomic_counter
:
689 op
= nir_intrinsic_memory_barrier_atomic_counter
;
691 case ir_intrinsic_memory_barrier_buffer
:
692 op
= nir_intrinsic_memory_barrier_buffer
;
694 case ir_intrinsic_memory_barrier_image
:
695 op
= nir_intrinsic_memory_barrier_image
;
697 case ir_intrinsic_memory_barrier_shared
:
698 op
= nir_intrinsic_memory_barrier_shared
;
700 case ir_intrinsic_shared_load
:
701 op
= nir_intrinsic_load_shared
;
703 case ir_intrinsic_shared_store
:
704 op
= nir_intrinsic_store_shared
;
706 case ir_intrinsic_shared_atomic_add
:
707 op
= nir_intrinsic_shared_atomic_add
;
709 case ir_intrinsic_shared_atomic_and
:
710 op
= nir_intrinsic_shared_atomic_and
;
712 case ir_intrinsic_shared_atomic_or
:
713 op
= nir_intrinsic_shared_atomic_or
;
715 case ir_intrinsic_shared_atomic_xor
:
716 op
= nir_intrinsic_shared_atomic_xor
;
718 case ir_intrinsic_shared_atomic_min
:
719 assert(ir
->return_deref
);
720 if (ir
->return_deref
->type
== glsl_type::int_type
)
721 op
= nir_intrinsic_shared_atomic_imin
;
722 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
723 op
= nir_intrinsic_shared_atomic_umin
;
725 unreachable("Invalid type");
727 case ir_intrinsic_shared_atomic_max
:
728 assert(ir
->return_deref
);
729 if (ir
->return_deref
->type
== glsl_type::int_type
)
730 op
= nir_intrinsic_shared_atomic_imax
;
731 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
732 op
= nir_intrinsic_shared_atomic_umax
;
734 unreachable("Invalid type");
736 case ir_intrinsic_shared_atomic_exchange
:
737 op
= nir_intrinsic_shared_atomic_exchange
;
739 case ir_intrinsic_shared_atomic_comp_swap
:
740 op
= nir_intrinsic_shared_atomic_comp_swap
;
743 unreachable("not reached");
746 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
747 nir_dest
*dest
= &instr
->dest
;
750 case nir_intrinsic_atomic_counter_read_var
:
751 case nir_intrinsic_atomic_counter_inc_var
:
752 case nir_intrinsic_atomic_counter_dec_var
:
753 case nir_intrinsic_atomic_counter_add_var
:
754 case nir_intrinsic_atomic_counter_min_var
:
755 case nir_intrinsic_atomic_counter_max_var
:
756 case nir_intrinsic_atomic_counter_and_var
:
757 case nir_intrinsic_atomic_counter_or_var
:
758 case nir_intrinsic_atomic_counter_xor_var
:
759 case nir_intrinsic_atomic_counter_exchange_var
:
760 case nir_intrinsic_atomic_counter_comp_swap_var
: {
761 /* Set the counter variable dereference. */
762 exec_node
*param
= ir
->actual_parameters
.get_head();
763 ir_dereference
*counter
= (ir_dereference
*)param
;
765 instr
->variables
[0] = evaluate_deref(&instr
->instr
, counter
);
766 param
= param
->get_next();
768 /* Set the intrinsic destination. */
769 if (ir
->return_deref
) {
770 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
773 /* Set the intrinsic parameters. */
774 if (!param
->is_tail_sentinel()) {
776 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
777 param
= param
->get_next();
780 if (!param
->is_tail_sentinel()) {
782 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
783 param
= param
->get_next();
786 nir_builder_instr_insert(&b
, &instr
->instr
);
789 case nir_intrinsic_image_load
:
790 case nir_intrinsic_image_store
:
791 case nir_intrinsic_image_atomic_add
:
792 case nir_intrinsic_image_atomic_min
:
793 case nir_intrinsic_image_atomic_max
:
794 case nir_intrinsic_image_atomic_and
:
795 case nir_intrinsic_image_atomic_or
:
796 case nir_intrinsic_image_atomic_xor
:
797 case nir_intrinsic_image_atomic_exchange
:
798 case nir_intrinsic_image_atomic_comp_swap
:
799 case nir_intrinsic_image_samples
:
800 case nir_intrinsic_image_size
: {
801 nir_ssa_undef_instr
*instr_undef
=
802 nir_ssa_undef_instr_create(shader
, 1, 32);
803 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
805 /* Set the image variable dereference. */
806 exec_node
*param
= ir
->actual_parameters
.get_head();
807 ir_dereference
*image
= (ir_dereference
*)param
;
808 const glsl_type
*type
=
809 image
->variable_referenced()->type
->without_array();
811 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
812 param
= param
->get_next();
814 /* Set the intrinsic destination. */
815 if (ir
->return_deref
) {
816 const nir_intrinsic_info
*info
=
817 &nir_intrinsic_infos
[instr
->intrinsic
];
818 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
819 info
->dest_components
, 32, NULL
);
822 if (op
== nir_intrinsic_image_size
||
823 op
== nir_intrinsic_image_samples
) {
824 nir_builder_instr_insert(&b
, &instr
->instr
);
828 /* Set the address argument, extending the coordinate vector to four
831 nir_ssa_def
*src_addr
=
832 evaluate_rvalue((ir_dereference
*)param
);
833 nir_ssa_def
*srcs
[4];
835 for (int i
= 0; i
< 4; i
++) {
836 if (i
< type
->coordinate_components())
837 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
839 srcs
[i
] = &instr_undef
->def
;
842 instr
->src
[0] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
843 param
= param
->get_next();
845 /* Set the sample argument, which is undefined for single-sample
848 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
850 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
851 param
= param
->get_next();
853 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
856 /* Set the intrinsic parameters. */
857 if (!param
->is_tail_sentinel()) {
859 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
860 param
= param
->get_next();
863 if (!param
->is_tail_sentinel()) {
865 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
866 param
= param
->get_next();
868 nir_builder_instr_insert(&b
, &instr
->instr
);
871 case nir_intrinsic_memory_barrier
:
872 case nir_intrinsic_group_memory_barrier
:
873 case nir_intrinsic_memory_barrier_atomic_counter
:
874 case nir_intrinsic_memory_barrier_buffer
:
875 case nir_intrinsic_memory_barrier_image
:
876 case nir_intrinsic_memory_barrier_shared
:
877 nir_builder_instr_insert(&b
, &instr
->instr
);
879 case nir_intrinsic_shader_clock
:
880 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
881 nir_builder_instr_insert(&b
, &instr
->instr
);
883 case nir_intrinsic_store_ssbo
: {
884 exec_node
*param
= ir
->actual_parameters
.get_head();
885 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
887 param
= param
->get_next();
888 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
890 param
= param
->get_next();
891 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
893 param
= param
->get_next();
894 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
897 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
898 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
899 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
900 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
901 instr
->num_components
= val
->type
->vector_elements
;
903 nir_builder_instr_insert(&b
, &instr
->instr
);
906 case nir_intrinsic_load_ssbo
: {
907 exec_node
*param
= ir
->actual_parameters
.get_head();
908 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
910 param
= param
->get_next();
911 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
913 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
914 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
916 const glsl_type
*type
= ir
->return_deref
->var
->type
;
917 instr
->num_components
= type
->vector_elements
;
919 /* Setup destination register */
920 unsigned bit_size
= glsl_get_bit_size(type
);
921 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
922 type
->vector_elements
, bit_size
, NULL
);
924 /* Insert the created nir instruction now since in the case of boolean
925 * result we will need to emit another instruction after it
927 nir_builder_instr_insert(&b
, &instr
->instr
);
930 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
931 * consider a true boolean to be ~0. Fix this up with a != 0
934 if (type
->base_type
== GLSL_TYPE_BOOL
) {
935 nir_alu_instr
*load_ssbo_compare
=
936 nir_alu_instr_create(shader
, nir_op_ine
);
937 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
938 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
939 load_ssbo_compare
->src
[1].src
=
940 nir_src_for_ssa(nir_imm_int(&b
, 0));
941 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
942 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
943 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
944 &load_ssbo_compare
->dest
.dest
,
945 type
->vector_elements
, bit_size
, NULL
);
946 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
947 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
948 dest
= &load_ssbo_compare
->dest
.dest
;
952 case nir_intrinsic_ssbo_atomic_add
:
953 case nir_intrinsic_ssbo_atomic_imin
:
954 case nir_intrinsic_ssbo_atomic_umin
:
955 case nir_intrinsic_ssbo_atomic_imax
:
956 case nir_intrinsic_ssbo_atomic_umax
:
957 case nir_intrinsic_ssbo_atomic_and
:
958 case nir_intrinsic_ssbo_atomic_or
:
959 case nir_intrinsic_ssbo_atomic_xor
:
960 case nir_intrinsic_ssbo_atomic_exchange
:
961 case nir_intrinsic_ssbo_atomic_comp_swap
: {
962 int param_count
= ir
->actual_parameters
.length();
963 assert(param_count
== 3 || param_count
== 4);
966 exec_node
*param
= ir
->actual_parameters
.get_head();
967 ir_instruction
*inst
= (ir_instruction
*) param
;
968 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
971 param
= param
->get_next();
972 inst
= (ir_instruction
*) param
;
973 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
975 /* data1 parameter (this is always present) */
976 param
= param
->get_next();
977 inst
= (ir_instruction
*) param
;
978 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
980 /* data2 parameter (only with atomic_comp_swap) */
981 if (param_count
== 4) {
982 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
983 param
= param
->get_next();
984 inst
= (ir_instruction
*) param
;
985 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
989 assert(ir
->return_deref
);
990 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
991 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
992 nir_builder_instr_insert(&b
, &instr
->instr
);
995 case nir_intrinsic_load_shared
: {
996 exec_node
*param
= ir
->actual_parameters
.get_head();
997 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
999 nir_intrinsic_set_base(instr
, 0);
1000 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1002 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1003 instr
->num_components
= type
->vector_elements
;
1005 /* Setup destination register */
1006 unsigned bit_size
= glsl_get_bit_size(type
);
1007 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1008 type
->vector_elements
, bit_size
, NULL
);
1010 nir_builder_instr_insert(&b
, &instr
->instr
);
1013 case nir_intrinsic_store_shared
: {
1014 exec_node
*param
= ir
->actual_parameters
.get_head();
1015 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1017 param
= param
->get_next();
1018 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1020 param
= param
->get_next();
1021 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1024 nir_intrinsic_set_base(instr
, 0);
1025 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1027 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1029 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1030 instr
->num_components
= val
->type
->vector_elements
;
1032 nir_builder_instr_insert(&b
, &instr
->instr
);
1035 case nir_intrinsic_shared_atomic_add
:
1036 case nir_intrinsic_shared_atomic_imin
:
1037 case nir_intrinsic_shared_atomic_umin
:
1038 case nir_intrinsic_shared_atomic_imax
:
1039 case nir_intrinsic_shared_atomic_umax
:
1040 case nir_intrinsic_shared_atomic_and
:
1041 case nir_intrinsic_shared_atomic_or
:
1042 case nir_intrinsic_shared_atomic_xor
:
1043 case nir_intrinsic_shared_atomic_exchange
:
1044 case nir_intrinsic_shared_atomic_comp_swap
: {
1045 int param_count
= ir
->actual_parameters
.length();
1046 assert(param_count
== 2 || param_count
== 3);
1049 exec_node
*param
= ir
->actual_parameters
.get_head();
1050 ir_instruction
*inst
= (ir_instruction
*) param
;
1051 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1053 /* data1 parameter (this is always present) */
1054 param
= param
->get_next();
1055 inst
= (ir_instruction
*) param
;
1056 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1058 /* data2 parameter (only with atomic_comp_swap) */
1059 if (param_count
== 3) {
1060 assert(op
== nir_intrinsic_shared_atomic_comp_swap
);
1061 param
= param
->get_next();
1062 inst
= (ir_instruction
*) param
;
1064 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1068 assert(ir
->return_deref
);
1069 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1070 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1071 ir
->return_deref
->type
->vector_elements
,
1073 nir_builder_instr_insert(&b
, &instr
->instr
);
1077 unreachable("not reached");
1080 if (ir
->return_deref
) {
1081 nir_intrinsic_instr
*store_instr
=
1082 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
1083 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1084 nir_intrinsic_set_write_mask(store_instr
,
1085 (1 << store_instr
->num_components
) - 1);
1087 store_instr
->variables
[0] =
1088 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
1089 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
1091 nir_builder_instr_insert(&b
, &store_instr
->instr
);
1097 struct hash_entry
*entry
=
1098 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1100 nir_function
*callee
= (nir_function
*) entry
->data
;
1102 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
1105 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
1106 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
1110 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
1111 nir_builder_instr_insert(&b
, &instr
->instr
);
1115 nir_visitor::visit(ir_assignment
*ir
)
1117 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1119 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1120 ir
->lhs
->variable_referenced()->data
.precise
;
1122 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1123 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1124 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1125 nir_intrinsic_instr
*copy
=
1126 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1128 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1129 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1131 if (ir
->condition
) {
1132 nir_if
*if_stmt
= nir_if_create(this->shader
);
1133 if_stmt
->condition
= nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
1134 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
1135 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, ©
->instr
);
1136 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
1138 nir_builder_instr_insert(&b
, ©
->instr
);
1143 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1145 ir
->lhs
->accept(this);
1146 nir_deref_var
*lhs_deref
= this->deref_head
;
1147 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1149 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1150 /* GLSL IR will give us the input to the write-masked assignment in a
1151 * single packed vector. So, for example, if the writemask is xzw, then
1152 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1156 unsigned component
= 0;
1157 for (unsigned i
= 0; i
< 4; i
++) {
1158 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1160 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1163 nir_intrinsic_instr
*store
=
1164 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1165 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1166 nir_intrinsic_set_write_mask(store
, ir
->write_mask
);
1167 nir_deref
*store_deref
= nir_copy_deref(store
, &lhs_deref
->deref
);
1168 store
->variables
[0] = nir_deref_as_var(store_deref
);
1169 store
->src
[0] = nir_src_for_ssa(src
);
1171 if (ir
->condition
) {
1172 nir_if
*if_stmt
= nir_if_create(this->shader
);
1173 if_stmt
->condition
= nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
1174 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
1175 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, &store
->instr
);
1176 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
1178 nir_builder_instr_insert(&b
, &store
->instr
);
1183 * Given an instruction, returns a pointer to its destination or NULL if there
1184 * is no destination.
1186 * Note that this only handles instructions we generate at this level.
1189 get_instr_dest(nir_instr
*instr
)
1191 nir_alu_instr
*alu_instr
;
1192 nir_intrinsic_instr
*intrinsic_instr
;
1193 nir_tex_instr
*tex_instr
;
1195 switch (instr
->type
) {
1196 case nir_instr_type_alu
:
1197 alu_instr
= nir_instr_as_alu(instr
);
1198 return &alu_instr
->dest
.dest
;
1200 case nir_instr_type_intrinsic
:
1201 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1202 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1203 return &intrinsic_instr
->dest
;
1207 case nir_instr_type_tex
:
1208 tex_instr
= nir_instr_as_tex(instr
);
1209 return &tex_instr
->dest
;
1212 unreachable("not reached");
1219 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1222 nir_dest
*dest
= get_instr_dest(instr
);
1225 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1227 nir_builder_instr_insert(&b
, instr
);
1230 assert(dest
->is_ssa
);
1231 this->result
= &dest
->ssa
;
1236 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1239 if (ir
->as_dereference() || ir
->as_constant()) {
1241 * A dereference is being used on the right hand side, which means we
1242 * must emit a variable load.
1245 nir_intrinsic_instr
*load_instr
=
1246 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1247 load_instr
->num_components
= ir
->type
->vector_elements
;
1248 load_instr
->variables
[0] = this->deref_head
;
1249 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1250 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1251 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
, bit_size
);
1254 return this->result
;
1258 type_is_float(glsl_base_type type
)
1260 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
;
1264 nir_visitor::visit(ir_expression
*ir
)
1266 /* Some special cases */
1267 switch (ir
->operation
) {
1268 case ir_binop_ubo_load
: {
1269 nir_intrinsic_instr
*load
=
1270 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1271 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1272 load
->num_components
= ir
->type
->vector_elements
;
1273 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1274 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1275 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1278 * In UBO's, a true boolean value is any non-zero value, but we consider
1279 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1282 if (ir
->type
->base_type
== GLSL_TYPE_BOOL
)
1283 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1288 case ir_unop_interpolate_at_centroid
:
1289 case ir_binop_interpolate_at_offset
:
1290 case ir_binop_interpolate_at_sample
: {
1291 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1292 ir_swizzle
*swizzle
= NULL
;
1294 /* the api does not allow a swizzle here, but the varying packing code
1295 * may have pushed one into here.
1297 swizzle
= ir
->operands
[0]->as_swizzle();
1299 deref
= swizzle
->val
->as_dereference();
1303 deref
->accept(this);
1305 nir_intrinsic_op op
;
1306 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1307 switch (ir
->operation
) {
1308 case ir_unop_interpolate_at_centroid
:
1309 op
= nir_intrinsic_interp_var_at_centroid
;
1311 case ir_binop_interpolate_at_offset
:
1312 op
= nir_intrinsic_interp_var_at_offset
;
1314 case ir_binop_interpolate_at_sample
:
1315 op
= nir_intrinsic_interp_var_at_sample
;
1318 unreachable("Invalid interpolation intrinsic");
1321 /* This case can happen if the vertex shader does not write the
1322 * given varying. In this case, the linker will lower it to a
1323 * global variable. Since interpolating a variable makes no
1324 * sense, we'll just turn it into a load which will probably
1325 * eventually end up as an SSA definition.
1327 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1328 op
= nir_intrinsic_load_var
;
1331 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1332 intrin
->num_components
= deref
->type
->vector_elements
;
1333 intrin
->variables
[0] = this->deref_head
;
1334 ralloc_steal(intrin
, intrin
->variables
[0]);
1336 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1337 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1338 intrin
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1340 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1341 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1344 unsigned swiz
[4] = {
1345 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1348 result
= nir_swizzle(&b
, result
, swiz
,
1349 swizzle
->type
->vector_elements
, false);
1359 nir_ssa_def
*srcs
[4];
1360 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1361 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1363 glsl_base_type types
[4];
1364 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1366 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1368 types
[i
] = GLSL_TYPE_FLOAT
;
1370 glsl_base_type out_type
;
1372 out_type
= ir
->type
->base_type
;
1374 out_type
= GLSL_TYPE_FLOAT
;
1376 switch (ir
->operation
) {
1377 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1378 case ir_unop_logic_not
:
1379 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1382 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1383 : nir_ineg(&b
, srcs
[0]);
1386 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1387 : nir_iabs(&b
, srcs
[0]);
1389 case ir_unop_saturate
:
1390 assert(type_is_float(types
[0]));
1391 result
= nir_fsat(&b
, srcs
[0]);
1394 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1395 : nir_isign(&b
, srcs
[0]);
1397 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1398 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1399 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1400 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1401 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1402 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1403 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1405 result
= supports_ints
? nir_i2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1408 result
= supports_ints
? nir_u2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1411 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1413 case ir_unop_f2i
: result
= nir_f2i(&b
, srcs
[0]); break;
1414 case ir_unop_f2u
: result
= nir_f2u(&b
, srcs
[0]); break;
1415 case ir_unop_f2b
: result
= nir_f2b(&b
, srcs
[0]); break;
1416 case ir_unop_i2b
: result
= nir_i2b(&b
, srcs
[0]); break;
1417 case ir_unop_b2i
: result
= nir_b2i(&b
, srcs
[0]); break;
1418 case ir_unop_d2f
: result
= nir_d2f(&b
, srcs
[0]); break;
1419 case ir_unop_f2d
: result
= nir_f2d(&b
, srcs
[0]); break;
1420 case ir_unop_d2i
: result
= nir_d2i(&b
, srcs
[0]); break;
1421 case ir_unop_d2u
: result
= nir_d2u(&b
, srcs
[0]); break;
1422 case ir_unop_d2b
: result
= nir_d2b(&b
, srcs
[0]); break;
1424 assert(supports_ints
);
1425 result
= nir_i2d(&b
, srcs
[0]);
1428 assert(supports_ints
);
1429 result
= nir_u2d(&b
, srcs
[0]);
1433 case ir_unop_bitcast_i2f
:
1434 case ir_unop_bitcast_f2i
:
1435 case ir_unop_bitcast_u2f
:
1436 case ir_unop_bitcast_f2u
:
1437 case ir_unop_subroutine_to_int
:
1439 result
= nir_imov(&b
, srcs
[0]);
1441 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1442 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1443 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1444 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1445 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1446 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1447 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1448 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1449 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1450 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1451 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1452 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1453 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1454 case ir_unop_pack_snorm_2x16
:
1455 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1457 case ir_unop_pack_snorm_4x8
:
1458 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1460 case ir_unop_pack_unorm_2x16
:
1461 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1463 case ir_unop_pack_unorm_4x8
:
1464 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1466 case ir_unop_pack_half_2x16
:
1467 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1469 case ir_unop_unpack_snorm_2x16
:
1470 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1472 case ir_unop_unpack_snorm_4x8
:
1473 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1475 case ir_unop_unpack_unorm_2x16
:
1476 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1478 case ir_unop_unpack_unorm_4x8
:
1479 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1481 case ir_unop_unpack_half_2x16
:
1482 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1484 case ir_unop_pack_double_2x32
:
1485 result
= nir_pack_double_2x32(&b
, srcs
[0]);
1487 case ir_unop_unpack_double_2x32
:
1488 result
= nir_unpack_double_2x32(&b
, srcs
[0]);
1490 case ir_unop_bitfield_reverse
:
1491 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1493 case ir_unop_bit_count
:
1494 result
= nir_bit_count(&b
, srcs
[0]);
1496 case ir_unop_find_msb
:
1498 case GLSL_TYPE_UINT
:
1499 result
= nir_ufind_msb(&b
, srcs
[0]);
1502 result
= nir_ifind_msb(&b
, srcs
[0]);
1505 unreachable("Invalid type for findMSB()");
1508 case ir_unop_find_lsb
:
1509 result
= nir_find_lsb(&b
, srcs
[0]);
1513 switch (ir
->type
->vector_elements
) {
1515 switch (ir
->operands
[0]->type
->vector_elements
) {
1516 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1517 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1518 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1519 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1520 default: unreachable("not reached");
1524 switch (ir
->operands
[0]->type
->vector_elements
) {
1525 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1526 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1527 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1528 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1529 default: unreachable("not reached");
1533 switch (ir
->operands
[0]->type
->vector_elements
) {
1534 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1535 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1536 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1537 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1538 default: unreachable("not reached");
1542 switch (ir
->operands
[0]->type
->vector_elements
) {
1543 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1544 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1545 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1546 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1547 default: unreachable("not reached");
1551 unreachable("not reached");
1554 case ir_unop_get_buffer_size
: {
1555 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1557 nir_intrinsic_get_buffer_size
);
1558 load
->num_components
= ir
->type
->vector_elements
;
1559 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1560 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1561 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1566 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1567 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1570 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1571 : nir_isub(&b
, srcs
[0], srcs
[1]);
1574 result
= type_is_float(out_type
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1575 : nir_imul(&b
, srcs
[0], srcs
[1]);
1578 if (type_is_float(out_type
))
1579 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1580 else if (out_type
== GLSL_TYPE_INT
)
1581 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1583 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1586 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1587 : nir_umod(&b
, srcs
[0], srcs
[1]);
1590 if (type_is_float(out_type
))
1591 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1592 else if (out_type
== GLSL_TYPE_INT
)
1593 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1595 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1598 if (type_is_float(out_type
))
1599 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1600 else if (out_type
== GLSL_TYPE_INT
)
1601 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1603 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1605 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1606 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1607 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1608 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1609 case ir_binop_logic_and
:
1610 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1611 : nir_fand(&b
, srcs
[0], srcs
[1]);
1613 case ir_binop_logic_or
:
1614 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1615 : nir_for(&b
, srcs
[0], srcs
[1]);
1617 case ir_binop_logic_xor
:
1618 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1619 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1621 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1622 case ir_binop_rshift
:
1623 result
= (out_type
== GLSL_TYPE_INT
) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1624 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1626 case ir_binop_imul_high
:
1627 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1628 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1630 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1631 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1633 if (supports_ints
) {
1634 if (type_is_float(types
[0]))
1635 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1636 else if (types
[0] == GLSL_TYPE_INT
)
1637 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1639 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1641 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1644 case ir_binop_greater
:
1645 if (supports_ints
) {
1646 if (type_is_float(types
[0]))
1647 result
= nir_flt(&b
, srcs
[1], srcs
[0]);
1648 else if (types
[0] == GLSL_TYPE_INT
)
1649 result
= nir_ilt(&b
, srcs
[1], srcs
[0]);
1651 result
= nir_ult(&b
, srcs
[1], srcs
[0]);
1653 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1656 case ir_binop_lequal
:
1657 if (supports_ints
) {
1658 if (type_is_float(types
[0]))
1659 result
= nir_fge(&b
, srcs
[1], srcs
[0]);
1660 else if (types
[0] == GLSL_TYPE_INT
)
1661 result
= nir_ige(&b
, srcs
[1], srcs
[0]);
1663 result
= nir_uge(&b
, srcs
[1], srcs
[0]);
1665 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1668 case ir_binop_gequal
:
1669 if (supports_ints
) {
1670 if (type_is_float(types
[0]))
1671 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1672 else if (types
[0] == GLSL_TYPE_INT
)
1673 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1675 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1677 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1680 case ir_binop_equal
:
1681 if (supports_ints
) {
1682 if (type_is_float(types
[0]))
1683 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1685 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1687 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1690 case ir_binop_nequal
:
1691 if (supports_ints
) {
1692 if (type_is_float(types
[0]))
1693 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1695 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1697 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1700 case ir_binop_all_equal
:
1701 if (supports_ints
) {
1702 if (type_is_float(types
[0])) {
1703 switch (ir
->operands
[0]->type
->vector_elements
) {
1704 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1705 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1706 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1707 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1709 unreachable("not reached");
1712 switch (ir
->operands
[0]->type
->vector_elements
) {
1713 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1714 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1715 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1716 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1718 unreachable("not reached");
1722 switch (ir
->operands
[0]->type
->vector_elements
) {
1723 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1724 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1725 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1726 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1728 unreachable("not reached");
1732 case ir_binop_any_nequal
:
1733 if (supports_ints
) {
1734 if (type_is_float(types
[0])) {
1735 switch (ir
->operands
[0]->type
->vector_elements
) {
1736 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1737 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1738 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1739 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1741 unreachable("not reached");
1744 switch (ir
->operands
[0]->type
->vector_elements
) {
1745 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1746 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1747 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1748 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1750 unreachable("not reached");
1754 switch (ir
->operands
[0]->type
->vector_elements
) {
1755 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1756 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1757 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1758 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1760 unreachable("not reached");
1765 switch (ir
->operands
[0]->type
->vector_elements
) {
1766 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1767 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1768 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1770 unreachable("not reached");
1774 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1776 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1779 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1783 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1785 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1787 case ir_triop_bitfield_extract
:
1788 result
= (out_type
== GLSL_TYPE_INT
) ?
1789 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1790 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1792 case ir_quadop_bitfield_insert
:
1793 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1795 case ir_quadop_vector
:
1796 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1800 unreachable("not reached");
1805 nir_visitor::visit(ir_swizzle
*ir
)
1807 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1808 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1809 ir
->type
->vector_elements
, !supports_ints
);
1813 nir_visitor::visit(ir_texture
*ir
)
1820 num_srcs
= 1; /* coordinate */
1825 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1826 num_srcs
= 2; /* coordinate, bias/lod */
1830 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1836 if (ir
->lod_info
.lod
!= NULL
)
1837 num_srcs
= 2; /* coordinate, lod */
1839 num_srcs
= 1; /* coordinate */
1843 op
= nir_texop_txf_ms
;
1844 num_srcs
= 2; /* coordinate, sample_index */
1849 if (ir
->lod_info
.lod
!= NULL
)
1850 num_srcs
= 1; /* lod */
1857 num_srcs
= 1; /* coordinate */
1862 num_srcs
= 1; /* coordinate */
1865 case ir_query_levels
:
1866 op
= nir_texop_query_levels
;
1870 case ir_texture_samples
:
1871 op
= nir_texop_texture_samples
;
1875 case ir_samples_identical
:
1876 op
= nir_texop_samples_identical
;
1877 num_srcs
= 1; /* coordinate */
1881 unreachable("not reached");
1884 if (ir
->projector
!= NULL
)
1886 if (ir
->shadow_comparitor
!= NULL
)
1888 if (ir
->offset
!= NULL
)
1891 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
1894 instr
->sampler_dim
=
1895 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
1896 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
1897 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
1898 if (instr
->is_shadow
)
1899 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
1900 switch (ir
->type
->base_type
) {
1901 case GLSL_TYPE_FLOAT
:
1902 instr
->dest_type
= nir_type_float
;
1905 instr
->dest_type
= nir_type_int
;
1907 case GLSL_TYPE_BOOL
:
1908 case GLSL_TYPE_UINT
:
1909 instr
->dest_type
= nir_type_uint
;
1912 unreachable("not reached");
1915 instr
->texture
= evaluate_deref(&instr
->instr
, ir
->sampler
);
1917 unsigned src_number
= 0;
1919 if (ir
->coordinate
!= NULL
) {
1920 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
1921 instr
->src
[src_number
].src
=
1922 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
1923 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
1927 if (ir
->projector
!= NULL
) {
1928 instr
->src
[src_number
].src
=
1929 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
1930 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
1934 if (ir
->shadow_comparitor
!= NULL
) {
1935 instr
->src
[src_number
].src
=
1936 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparitor
));
1937 instr
->src
[src_number
].src_type
= nir_tex_src_comparitor
;
1941 if (ir
->offset
!= NULL
) {
1942 /* we don't support multiple offsets yet */
1943 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
1945 instr
->src
[src_number
].src
=
1946 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
1947 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
1953 instr
->src
[src_number
].src
=
1954 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
1955 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
1962 if (ir
->lod_info
.lod
!= NULL
) {
1963 instr
->src
[src_number
].src
=
1964 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
1965 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
1971 instr
->src
[src_number
].src
=
1972 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
1973 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
1975 instr
->src
[src_number
].src
=
1976 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
1977 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
1982 instr
->src
[src_number
].src
=
1983 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
1984 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
1989 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
1996 assert(src_number
== num_srcs
);
1998 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1999 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2003 nir_visitor::visit(ir_constant
*ir
)
2006 * We don't know if this variable is an array or struct that gets
2007 * dereferenced, so do the safe thing an make it a variable with a
2008 * constant initializer and return a dereference.
2012 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2013 var
->data
.read_only
= true;
2014 var
->constant_initializer
= constant_copy(ir
, var
);
2016 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2017 this->deref_tail
= &this->deref_head
->deref
;
2021 nir_visitor::visit(ir_dereference_variable
*ir
)
2023 struct hash_entry
*entry
=
2024 _mesa_hash_table_search(this->var_table
, ir
->var
);
2026 nir_variable
*var
= (nir_variable
*) entry
->data
;
2028 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2029 this->deref_head
= deref
;
2030 this->deref_tail
= &deref
->deref
;
2034 nir_visitor::visit(ir_dereference_record
*ir
)
2036 ir
->record
->accept(this);
2038 int field_index
= this->deref_tail
->type
->field_index(ir
->field
);
2039 assert(field_index
>= 0);
2041 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2042 deref
->deref
.type
= ir
->type
;
2043 this->deref_tail
->child
= &deref
->deref
;
2044 this->deref_tail
= &deref
->deref
;
2048 nir_visitor::visit(ir_dereference_array
*ir
)
2050 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2051 deref
->deref
.type
= ir
->type
;
2053 ir_constant
*const_index
= ir
->array_index
->as_constant();
2054 if (const_index
!= NULL
) {
2055 deref
->deref_array_type
= nir_deref_array_type_direct
;
2056 deref
->base_offset
= const_index
->value
.u
[0];
2058 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2060 nir_src_for_ssa(evaluate_rvalue(ir
->array_index
));
2063 ir
->array
->accept(this);
2065 this->deref_tail
->child
= &deref
->deref
;
2066 ralloc_steal(this->deref_tail
, deref
);
2067 this->deref_tail
= &deref
->deref
;
2071 nir_visitor::visit(ir_barrier
*)
2073 nir_intrinsic_instr
*instr
=
2074 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2075 nir_builder_instr_insert(&b
, &instr
->instr
);