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
.compact
= false;
333 var
->data
.location_frac
= ir
->data
.location_frac
;
335 switch (ir
->data
.depth_layout
) {
336 case ir_depth_layout_none
:
337 var
->data
.depth_layout
= nir_depth_layout_none
;
339 case ir_depth_layout_any
:
340 var
->data
.depth_layout
= nir_depth_layout_any
;
342 case ir_depth_layout_greater
:
343 var
->data
.depth_layout
= nir_depth_layout_greater
;
345 case ir_depth_layout_less
:
346 var
->data
.depth_layout
= nir_depth_layout_less
;
348 case ir_depth_layout_unchanged
:
349 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
352 unreachable("not reached");
355 var
->data
.index
= ir
->data
.index
;
356 var
->data
.binding
= ir
->data
.binding
;
357 var
->data
.offset
= ir
->data
.offset
;
358 var
->data
.image
.read_only
= ir
->data
.image_read_only
;
359 var
->data
.image
.write_only
= ir
->data
.image_write_only
;
360 var
->data
.image
.coherent
= ir
->data
.image_coherent
;
361 var
->data
.image
._volatile
= ir
->data
.image_volatile
;
362 var
->data
.image
.restrict_flag
= ir
->data
.image_restrict
;
363 var
->data
.image
.format
= ir
->data
.image_format
;
364 var
->data
.max_array_access
= ir
->data
.max_array_access
;
365 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
367 var
->num_state_slots
= ir
->get_num_state_slots();
368 if (var
->num_state_slots
> 0) {
369 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
370 var
->num_state_slots
);
372 ir_state_slot
*state_slots
= ir
->get_state_slots();
373 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
374 for (unsigned j
= 0; j
< 5; j
++)
375 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
376 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
379 var
->state_slots
= NULL
;
382 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
384 var
->interface_type
= ir
->get_interface_type();
386 if (var
->data
.mode
== nir_var_local
)
387 nir_function_impl_add_variable(impl
, var
);
389 nir_shader_add_variable(shader
, var
);
391 _mesa_hash_table_insert(var_table
, ir
, var
);
396 nir_function_visitor::visit_enter(ir_function
*ir
)
398 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
399 visitor
->create_function(sig
);
401 return visit_continue_with_parent
;
405 nir_visitor::create_function(ir_function_signature
*ir
)
407 if (ir
->is_intrinsic())
410 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
412 assert(ir
->parameters
.is_empty());
413 assert(ir
->return_type
== glsl_type::void_type
);
415 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
419 nir_visitor::visit(ir_function
*ir
)
421 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
426 nir_visitor::visit(ir_function_signature
*ir
)
428 if (ir
->is_intrinsic())
431 struct hash_entry
*entry
=
432 _mesa_hash_table_search(this->overload_table
, ir
);
435 nir_function
*func
= (nir_function
*) entry
->data
;
437 if (ir
->is_defined
) {
438 nir_function_impl
*impl
= nir_function_impl_create(func
);
441 assert(strcmp(func
->name
, "main") == 0);
442 assert(ir
->parameters
.is_empty());
443 assert(func
->return_type
== glsl_type::void_type
);
445 this->is_global
= false;
447 nir_builder_init(&b
, impl
);
448 b
.cursor
= nir_after_cf_list(&impl
->body
);
449 visit_exec_list(&ir
->body
, this);
451 this->is_global
= true;
458 nir_visitor::visit(ir_loop
*ir
)
460 nir_loop
*loop
= nir_loop_create(this->shader
);
461 nir_builder_cf_insert(&b
, &loop
->cf_node
);
463 b
.cursor
= nir_after_cf_list(&loop
->body
);
464 visit_exec_list(&ir
->body_instructions
, this);
465 b
.cursor
= nir_after_cf_node(&loop
->cf_node
);
469 nir_visitor::visit(ir_if
*ir
)
472 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
474 nir_if
*if_stmt
= nir_if_create(this->shader
);
475 if_stmt
->condition
= condition
;
476 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
478 b
.cursor
= nir_after_cf_list(&if_stmt
->then_list
);
479 visit_exec_list(&ir
->then_instructions
, this);
481 b
.cursor
= nir_after_cf_list(&if_stmt
->else_list
);
482 visit_exec_list(&ir
->else_instructions
, this);
484 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
488 nir_visitor::visit(ir_discard
*ir
)
491 * discards aren't treated as control flow, because before we lower them
492 * they can appear anywhere in the shader and the stuff after them may still
493 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
494 * discards will be immediately followed by a return.
497 nir_intrinsic_instr
*discard
;
499 discard
= nir_intrinsic_instr_create(this->shader
,
500 nir_intrinsic_discard_if
);
502 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
504 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
507 nir_builder_instr_insert(&b
, &discard
->instr
);
511 nir_visitor::visit(ir_emit_vertex
*ir
)
513 nir_intrinsic_instr
*instr
=
514 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
515 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
516 nir_builder_instr_insert(&b
, &instr
->instr
);
520 nir_visitor::visit(ir_end_primitive
*ir
)
522 nir_intrinsic_instr
*instr
=
523 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
524 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
525 nir_builder_instr_insert(&b
, &instr
->instr
);
529 nir_visitor::visit(ir_loop_jump
*ir
)
533 case ir_loop_jump::jump_break
:
534 type
= nir_jump_break
;
536 case ir_loop_jump::jump_continue
:
537 type
= nir_jump_continue
;
540 unreachable("not reached");
543 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
544 nir_builder_instr_insert(&b
, &instr
->instr
);
548 nir_visitor::visit(ir_return
*ir
)
550 if (ir
->value
!= NULL
) {
551 nir_intrinsic_instr
*copy
=
552 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
554 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
555 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
558 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
559 nir_builder_instr_insert(&b
, &instr
->instr
);
563 nir_visitor::visit(ir_call
*ir
)
565 if (ir
->callee
->is_intrinsic()) {
568 switch (ir
->callee
->intrinsic_id
) {
569 case ir_intrinsic_atomic_counter_read
:
570 op
= nir_intrinsic_atomic_counter_read_var
;
572 case ir_intrinsic_atomic_counter_increment
:
573 op
= nir_intrinsic_atomic_counter_inc_var
;
575 case ir_intrinsic_atomic_counter_predecrement
:
576 op
= nir_intrinsic_atomic_counter_dec_var
;
578 case ir_intrinsic_atomic_counter_add
:
579 op
= nir_intrinsic_atomic_counter_add_var
;
581 case ir_intrinsic_atomic_counter_and
:
582 op
= nir_intrinsic_atomic_counter_and_var
;
584 case ir_intrinsic_atomic_counter_or
:
585 op
= nir_intrinsic_atomic_counter_or_var
;
587 case ir_intrinsic_atomic_counter_xor
:
588 op
= nir_intrinsic_atomic_counter_xor_var
;
590 case ir_intrinsic_atomic_counter_min
:
591 op
= nir_intrinsic_atomic_counter_min_var
;
593 case ir_intrinsic_atomic_counter_max
:
594 op
= nir_intrinsic_atomic_counter_max_var
;
596 case ir_intrinsic_atomic_counter_exchange
:
597 op
= nir_intrinsic_atomic_counter_exchange_var
;
599 case ir_intrinsic_atomic_counter_comp_swap
:
600 op
= nir_intrinsic_atomic_counter_comp_swap_var
;
602 case ir_intrinsic_image_load
:
603 op
= nir_intrinsic_image_load
;
605 case ir_intrinsic_image_store
:
606 op
= nir_intrinsic_image_store
;
608 case ir_intrinsic_image_atomic_add
:
609 op
= nir_intrinsic_image_atomic_add
;
611 case ir_intrinsic_image_atomic_min
:
612 op
= nir_intrinsic_image_atomic_min
;
614 case ir_intrinsic_image_atomic_max
:
615 op
= nir_intrinsic_image_atomic_max
;
617 case ir_intrinsic_image_atomic_and
:
618 op
= nir_intrinsic_image_atomic_and
;
620 case ir_intrinsic_image_atomic_or
:
621 op
= nir_intrinsic_image_atomic_or
;
623 case ir_intrinsic_image_atomic_xor
:
624 op
= nir_intrinsic_image_atomic_xor
;
626 case ir_intrinsic_image_atomic_exchange
:
627 op
= nir_intrinsic_image_atomic_exchange
;
629 case ir_intrinsic_image_atomic_comp_swap
:
630 op
= nir_intrinsic_image_atomic_comp_swap
;
632 case ir_intrinsic_memory_barrier
:
633 op
= nir_intrinsic_memory_barrier
;
635 case ir_intrinsic_image_size
:
636 op
= nir_intrinsic_image_size
;
638 case ir_intrinsic_image_samples
:
639 op
= nir_intrinsic_image_samples
;
641 case ir_intrinsic_ssbo_store
:
642 op
= nir_intrinsic_store_ssbo
;
644 case ir_intrinsic_ssbo_load
:
645 op
= nir_intrinsic_load_ssbo
;
647 case ir_intrinsic_ssbo_atomic_add
:
648 op
= nir_intrinsic_ssbo_atomic_add
;
650 case ir_intrinsic_ssbo_atomic_and
:
651 op
= nir_intrinsic_ssbo_atomic_and
;
653 case ir_intrinsic_ssbo_atomic_or
:
654 op
= nir_intrinsic_ssbo_atomic_or
;
656 case ir_intrinsic_ssbo_atomic_xor
:
657 op
= nir_intrinsic_ssbo_atomic_xor
;
659 case ir_intrinsic_ssbo_atomic_min
:
660 assert(ir
->return_deref
);
661 if (ir
->return_deref
->type
== glsl_type::int_type
)
662 op
= nir_intrinsic_ssbo_atomic_imin
;
663 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
664 op
= nir_intrinsic_ssbo_atomic_umin
;
666 unreachable("Invalid type");
668 case ir_intrinsic_ssbo_atomic_max
:
669 assert(ir
->return_deref
);
670 if (ir
->return_deref
->type
== glsl_type::int_type
)
671 op
= nir_intrinsic_ssbo_atomic_imax
;
672 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
673 op
= nir_intrinsic_ssbo_atomic_umax
;
675 unreachable("Invalid type");
677 case ir_intrinsic_ssbo_atomic_exchange
:
678 op
= nir_intrinsic_ssbo_atomic_exchange
;
680 case ir_intrinsic_ssbo_atomic_comp_swap
:
681 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
683 case ir_intrinsic_shader_clock
:
684 op
= nir_intrinsic_shader_clock
;
686 case ir_intrinsic_group_memory_barrier
:
687 op
= nir_intrinsic_group_memory_barrier
;
689 case ir_intrinsic_memory_barrier_atomic_counter
:
690 op
= nir_intrinsic_memory_barrier_atomic_counter
;
692 case ir_intrinsic_memory_barrier_buffer
:
693 op
= nir_intrinsic_memory_barrier_buffer
;
695 case ir_intrinsic_memory_barrier_image
:
696 op
= nir_intrinsic_memory_barrier_image
;
698 case ir_intrinsic_memory_barrier_shared
:
699 op
= nir_intrinsic_memory_barrier_shared
;
701 case ir_intrinsic_shared_load
:
702 op
= nir_intrinsic_load_shared
;
704 case ir_intrinsic_shared_store
:
705 op
= nir_intrinsic_store_shared
;
707 case ir_intrinsic_shared_atomic_add
:
708 op
= nir_intrinsic_shared_atomic_add
;
710 case ir_intrinsic_shared_atomic_and
:
711 op
= nir_intrinsic_shared_atomic_and
;
713 case ir_intrinsic_shared_atomic_or
:
714 op
= nir_intrinsic_shared_atomic_or
;
716 case ir_intrinsic_shared_atomic_xor
:
717 op
= nir_intrinsic_shared_atomic_xor
;
719 case ir_intrinsic_shared_atomic_min
:
720 assert(ir
->return_deref
);
721 if (ir
->return_deref
->type
== glsl_type::int_type
)
722 op
= nir_intrinsic_shared_atomic_imin
;
723 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
724 op
= nir_intrinsic_shared_atomic_umin
;
726 unreachable("Invalid type");
728 case ir_intrinsic_shared_atomic_max
:
729 assert(ir
->return_deref
);
730 if (ir
->return_deref
->type
== glsl_type::int_type
)
731 op
= nir_intrinsic_shared_atomic_imax
;
732 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
733 op
= nir_intrinsic_shared_atomic_umax
;
735 unreachable("Invalid type");
737 case ir_intrinsic_shared_atomic_exchange
:
738 op
= nir_intrinsic_shared_atomic_exchange
;
740 case ir_intrinsic_shared_atomic_comp_swap
:
741 op
= nir_intrinsic_shared_atomic_comp_swap
;
744 unreachable("not reached");
747 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
748 nir_dest
*dest
= &instr
->dest
;
751 case nir_intrinsic_atomic_counter_read_var
:
752 case nir_intrinsic_atomic_counter_inc_var
:
753 case nir_intrinsic_atomic_counter_dec_var
:
754 case nir_intrinsic_atomic_counter_add_var
:
755 case nir_intrinsic_atomic_counter_min_var
:
756 case nir_intrinsic_atomic_counter_max_var
:
757 case nir_intrinsic_atomic_counter_and_var
:
758 case nir_intrinsic_atomic_counter_or_var
:
759 case nir_intrinsic_atomic_counter_xor_var
:
760 case nir_intrinsic_atomic_counter_exchange_var
:
761 case nir_intrinsic_atomic_counter_comp_swap_var
: {
762 /* Set the counter variable dereference. */
763 exec_node
*param
= ir
->actual_parameters
.get_head();
764 ir_dereference
*counter
= (ir_dereference
*)param
;
766 instr
->variables
[0] = evaluate_deref(&instr
->instr
, counter
);
767 param
= param
->get_next();
769 /* Set the intrinsic destination. */
770 if (ir
->return_deref
) {
771 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
774 /* Set the intrinsic parameters. */
775 if (!param
->is_tail_sentinel()) {
777 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
778 param
= param
->get_next();
781 if (!param
->is_tail_sentinel()) {
783 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
784 param
= param
->get_next();
787 nir_builder_instr_insert(&b
, &instr
->instr
);
790 case nir_intrinsic_image_load
:
791 case nir_intrinsic_image_store
:
792 case nir_intrinsic_image_atomic_add
:
793 case nir_intrinsic_image_atomic_min
:
794 case nir_intrinsic_image_atomic_max
:
795 case nir_intrinsic_image_atomic_and
:
796 case nir_intrinsic_image_atomic_or
:
797 case nir_intrinsic_image_atomic_xor
:
798 case nir_intrinsic_image_atomic_exchange
:
799 case nir_intrinsic_image_atomic_comp_swap
:
800 case nir_intrinsic_image_samples
:
801 case nir_intrinsic_image_size
: {
802 nir_ssa_undef_instr
*instr_undef
=
803 nir_ssa_undef_instr_create(shader
, 1, 32);
804 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
806 /* Set the image variable dereference. */
807 exec_node
*param
= ir
->actual_parameters
.get_head();
808 ir_dereference
*image
= (ir_dereference
*)param
;
809 const glsl_type
*type
=
810 image
->variable_referenced()->type
->without_array();
812 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
813 param
= param
->get_next();
815 /* Set the intrinsic destination. */
816 if (ir
->return_deref
) {
817 const nir_intrinsic_info
*info
=
818 &nir_intrinsic_infos
[instr
->intrinsic
];
819 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
820 info
->dest_components
, 32, NULL
);
823 if (op
== nir_intrinsic_image_size
||
824 op
== nir_intrinsic_image_samples
) {
825 nir_builder_instr_insert(&b
, &instr
->instr
);
829 /* Set the address argument, extending the coordinate vector to four
832 nir_ssa_def
*src_addr
=
833 evaluate_rvalue((ir_dereference
*)param
);
834 nir_ssa_def
*srcs
[4];
836 for (int i
= 0; i
< 4; i
++) {
837 if (i
< type
->coordinate_components())
838 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
840 srcs
[i
] = &instr_undef
->def
;
843 instr
->src
[0] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
844 param
= param
->get_next();
846 /* Set the sample argument, which is undefined for single-sample
849 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
851 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
852 param
= param
->get_next();
854 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
857 /* Set the intrinsic parameters. */
858 if (!param
->is_tail_sentinel()) {
860 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
861 param
= param
->get_next();
864 if (!param
->is_tail_sentinel()) {
866 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
867 param
= param
->get_next();
869 nir_builder_instr_insert(&b
, &instr
->instr
);
872 case nir_intrinsic_memory_barrier
:
873 case nir_intrinsic_group_memory_barrier
:
874 case nir_intrinsic_memory_barrier_atomic_counter
:
875 case nir_intrinsic_memory_barrier_buffer
:
876 case nir_intrinsic_memory_barrier_image
:
877 case nir_intrinsic_memory_barrier_shared
:
878 nir_builder_instr_insert(&b
, &instr
->instr
);
880 case nir_intrinsic_shader_clock
:
881 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
882 nir_builder_instr_insert(&b
, &instr
->instr
);
884 case nir_intrinsic_store_ssbo
: {
885 exec_node
*param
= ir
->actual_parameters
.get_head();
886 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
888 param
= param
->get_next();
889 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
891 param
= param
->get_next();
892 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
894 param
= param
->get_next();
895 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
898 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
899 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
900 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
901 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
902 instr
->num_components
= val
->type
->vector_elements
;
904 nir_builder_instr_insert(&b
, &instr
->instr
);
907 case nir_intrinsic_load_ssbo
: {
908 exec_node
*param
= ir
->actual_parameters
.get_head();
909 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
911 param
= param
->get_next();
912 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
914 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
915 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
917 const glsl_type
*type
= ir
->return_deref
->var
->type
;
918 instr
->num_components
= type
->vector_elements
;
920 /* Setup destination register */
921 unsigned bit_size
= glsl_get_bit_size(type
);
922 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
923 type
->vector_elements
, bit_size
, NULL
);
925 /* Insert the created nir instruction now since in the case of boolean
926 * result we will need to emit another instruction after it
928 nir_builder_instr_insert(&b
, &instr
->instr
);
931 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
932 * consider a true boolean to be ~0. Fix this up with a != 0
935 if (type
->base_type
== GLSL_TYPE_BOOL
) {
936 nir_alu_instr
*load_ssbo_compare
=
937 nir_alu_instr_create(shader
, nir_op_ine
);
938 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
939 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
940 load_ssbo_compare
->src
[1].src
=
941 nir_src_for_ssa(nir_imm_int(&b
, 0));
942 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
943 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
944 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
945 &load_ssbo_compare
->dest
.dest
,
946 type
->vector_elements
, bit_size
, NULL
);
947 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
948 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
949 dest
= &load_ssbo_compare
->dest
.dest
;
953 case nir_intrinsic_ssbo_atomic_add
:
954 case nir_intrinsic_ssbo_atomic_imin
:
955 case nir_intrinsic_ssbo_atomic_umin
:
956 case nir_intrinsic_ssbo_atomic_imax
:
957 case nir_intrinsic_ssbo_atomic_umax
:
958 case nir_intrinsic_ssbo_atomic_and
:
959 case nir_intrinsic_ssbo_atomic_or
:
960 case nir_intrinsic_ssbo_atomic_xor
:
961 case nir_intrinsic_ssbo_atomic_exchange
:
962 case nir_intrinsic_ssbo_atomic_comp_swap
: {
963 int param_count
= ir
->actual_parameters
.length();
964 assert(param_count
== 3 || param_count
== 4);
967 exec_node
*param
= ir
->actual_parameters
.get_head();
968 ir_instruction
*inst
= (ir_instruction
*) param
;
969 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
972 param
= param
->get_next();
973 inst
= (ir_instruction
*) param
;
974 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
976 /* data1 parameter (this is always present) */
977 param
= param
->get_next();
978 inst
= (ir_instruction
*) param
;
979 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
981 /* data2 parameter (only with atomic_comp_swap) */
982 if (param_count
== 4) {
983 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
984 param
= param
->get_next();
985 inst
= (ir_instruction
*) param
;
986 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
990 assert(ir
->return_deref
);
991 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
992 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
993 nir_builder_instr_insert(&b
, &instr
->instr
);
996 case nir_intrinsic_load_shared
: {
997 exec_node
*param
= ir
->actual_parameters
.get_head();
998 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1000 nir_intrinsic_set_base(instr
, 0);
1001 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1003 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1004 instr
->num_components
= type
->vector_elements
;
1006 /* Setup destination register */
1007 unsigned bit_size
= glsl_get_bit_size(type
);
1008 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1009 type
->vector_elements
, bit_size
, NULL
);
1011 nir_builder_instr_insert(&b
, &instr
->instr
);
1014 case nir_intrinsic_store_shared
: {
1015 exec_node
*param
= ir
->actual_parameters
.get_head();
1016 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1018 param
= param
->get_next();
1019 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1021 param
= param
->get_next();
1022 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1025 nir_intrinsic_set_base(instr
, 0);
1026 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1028 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1030 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1031 instr
->num_components
= val
->type
->vector_elements
;
1033 nir_builder_instr_insert(&b
, &instr
->instr
);
1036 case nir_intrinsic_shared_atomic_add
:
1037 case nir_intrinsic_shared_atomic_imin
:
1038 case nir_intrinsic_shared_atomic_umin
:
1039 case nir_intrinsic_shared_atomic_imax
:
1040 case nir_intrinsic_shared_atomic_umax
:
1041 case nir_intrinsic_shared_atomic_and
:
1042 case nir_intrinsic_shared_atomic_or
:
1043 case nir_intrinsic_shared_atomic_xor
:
1044 case nir_intrinsic_shared_atomic_exchange
:
1045 case nir_intrinsic_shared_atomic_comp_swap
: {
1046 int param_count
= ir
->actual_parameters
.length();
1047 assert(param_count
== 2 || param_count
== 3);
1050 exec_node
*param
= ir
->actual_parameters
.get_head();
1051 ir_instruction
*inst
= (ir_instruction
*) param
;
1052 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1054 /* data1 parameter (this is always present) */
1055 param
= param
->get_next();
1056 inst
= (ir_instruction
*) param
;
1057 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1059 /* data2 parameter (only with atomic_comp_swap) */
1060 if (param_count
== 3) {
1061 assert(op
== nir_intrinsic_shared_atomic_comp_swap
);
1062 param
= param
->get_next();
1063 inst
= (ir_instruction
*) param
;
1065 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1069 assert(ir
->return_deref
);
1070 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1071 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1072 ir
->return_deref
->type
->vector_elements
,
1074 nir_builder_instr_insert(&b
, &instr
->instr
);
1078 unreachable("not reached");
1081 if (ir
->return_deref
) {
1082 nir_intrinsic_instr
*store_instr
=
1083 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
1084 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1085 nir_intrinsic_set_write_mask(store_instr
,
1086 (1 << store_instr
->num_components
) - 1);
1088 store_instr
->variables
[0] =
1089 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
1090 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
1092 nir_builder_instr_insert(&b
, &store_instr
->instr
);
1098 struct hash_entry
*entry
=
1099 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1101 nir_function
*callee
= (nir_function
*) entry
->data
;
1103 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
1106 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
1107 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
1111 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
1112 nir_builder_instr_insert(&b
, &instr
->instr
);
1116 nir_visitor::visit(ir_assignment
*ir
)
1118 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1120 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1121 ir
->lhs
->variable_referenced()->data
.precise
;
1123 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1124 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1125 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1126 nir_intrinsic_instr
*copy
=
1127 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1129 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1130 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1132 if (ir
->condition
) {
1133 nir_if
*if_stmt
= nir_if_create(this->shader
);
1134 if_stmt
->condition
= nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
1135 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
1136 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, ©
->instr
);
1137 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
1139 nir_builder_instr_insert(&b
, ©
->instr
);
1144 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1146 ir
->lhs
->accept(this);
1147 nir_deref_var
*lhs_deref
= this->deref_head
;
1148 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1150 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1151 /* GLSL IR will give us the input to the write-masked assignment in a
1152 * single packed vector. So, for example, if the writemask is xzw, then
1153 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1157 unsigned component
= 0;
1158 for (unsigned i
= 0; i
< 4; i
++) {
1159 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1161 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1164 nir_intrinsic_instr
*store
=
1165 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1166 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1167 nir_intrinsic_set_write_mask(store
, ir
->write_mask
);
1168 nir_deref
*store_deref
= nir_copy_deref(store
, &lhs_deref
->deref
);
1169 store
->variables
[0] = nir_deref_as_var(store_deref
);
1170 store
->src
[0] = nir_src_for_ssa(src
);
1172 if (ir
->condition
) {
1173 nir_if
*if_stmt
= nir_if_create(this->shader
);
1174 if_stmt
->condition
= nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
1175 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
1176 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, &store
->instr
);
1177 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
1179 nir_builder_instr_insert(&b
, &store
->instr
);
1184 * Given an instruction, returns a pointer to its destination or NULL if there
1185 * is no destination.
1187 * Note that this only handles instructions we generate at this level.
1190 get_instr_dest(nir_instr
*instr
)
1192 nir_alu_instr
*alu_instr
;
1193 nir_intrinsic_instr
*intrinsic_instr
;
1194 nir_tex_instr
*tex_instr
;
1196 switch (instr
->type
) {
1197 case nir_instr_type_alu
:
1198 alu_instr
= nir_instr_as_alu(instr
);
1199 return &alu_instr
->dest
.dest
;
1201 case nir_instr_type_intrinsic
:
1202 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1203 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1204 return &intrinsic_instr
->dest
;
1208 case nir_instr_type_tex
:
1209 tex_instr
= nir_instr_as_tex(instr
);
1210 return &tex_instr
->dest
;
1213 unreachable("not reached");
1220 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1223 nir_dest
*dest
= get_instr_dest(instr
);
1226 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1228 nir_builder_instr_insert(&b
, instr
);
1231 assert(dest
->is_ssa
);
1232 this->result
= &dest
->ssa
;
1237 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1240 if (ir
->as_dereference() || ir
->as_constant()) {
1242 * A dereference is being used on the right hand side, which means we
1243 * must emit a variable load.
1246 nir_intrinsic_instr
*load_instr
=
1247 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1248 load_instr
->num_components
= ir
->type
->vector_elements
;
1249 load_instr
->variables
[0] = this->deref_head
;
1250 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1251 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1252 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
, bit_size
);
1255 return this->result
;
1259 type_is_float(glsl_base_type type
)
1261 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
;
1265 nir_visitor::visit(ir_expression
*ir
)
1267 /* Some special cases */
1268 switch (ir
->operation
) {
1269 case ir_binop_ubo_load
: {
1270 nir_intrinsic_instr
*load
=
1271 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1272 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1273 load
->num_components
= ir
->type
->vector_elements
;
1274 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1275 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1276 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1279 * In UBO's, a true boolean value is any non-zero value, but we consider
1280 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1283 if (ir
->type
->base_type
== GLSL_TYPE_BOOL
)
1284 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1289 case ir_unop_interpolate_at_centroid
:
1290 case ir_binop_interpolate_at_offset
:
1291 case ir_binop_interpolate_at_sample
: {
1292 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1293 ir_swizzle
*swizzle
= NULL
;
1295 /* the api does not allow a swizzle here, but the varying packing code
1296 * may have pushed one into here.
1298 swizzle
= ir
->operands
[0]->as_swizzle();
1300 deref
= swizzle
->val
->as_dereference();
1304 deref
->accept(this);
1306 nir_intrinsic_op op
;
1307 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1308 switch (ir
->operation
) {
1309 case ir_unop_interpolate_at_centroid
:
1310 op
= nir_intrinsic_interp_var_at_centroid
;
1312 case ir_binop_interpolate_at_offset
:
1313 op
= nir_intrinsic_interp_var_at_offset
;
1315 case ir_binop_interpolate_at_sample
:
1316 op
= nir_intrinsic_interp_var_at_sample
;
1319 unreachable("Invalid interpolation intrinsic");
1322 /* This case can happen if the vertex shader does not write the
1323 * given varying. In this case, the linker will lower it to a
1324 * global variable. Since interpolating a variable makes no
1325 * sense, we'll just turn it into a load which will probably
1326 * eventually end up as an SSA definition.
1328 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1329 op
= nir_intrinsic_load_var
;
1332 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1333 intrin
->num_components
= deref
->type
->vector_elements
;
1334 intrin
->variables
[0] = this->deref_head
;
1335 ralloc_steal(intrin
, intrin
->variables
[0]);
1337 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1338 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1339 intrin
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1341 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1342 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1345 unsigned swiz
[4] = {
1346 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1349 result
= nir_swizzle(&b
, result
, swiz
,
1350 swizzle
->type
->vector_elements
, false);
1360 nir_ssa_def
*srcs
[4];
1361 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1362 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1364 glsl_base_type types
[4];
1365 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1367 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1369 types
[i
] = GLSL_TYPE_FLOAT
;
1371 glsl_base_type out_type
;
1373 out_type
= ir
->type
->base_type
;
1375 out_type
= GLSL_TYPE_FLOAT
;
1377 switch (ir
->operation
) {
1378 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1379 case ir_unop_logic_not
:
1380 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1383 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1384 : nir_ineg(&b
, srcs
[0]);
1387 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1388 : nir_iabs(&b
, srcs
[0]);
1390 case ir_unop_saturate
:
1391 assert(type_is_float(types
[0]));
1392 result
= nir_fsat(&b
, srcs
[0]);
1395 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1396 : nir_isign(&b
, srcs
[0]);
1398 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1399 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1400 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1401 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1402 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1403 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1404 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1406 result
= supports_ints
? nir_i2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1409 result
= supports_ints
? nir_u2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1412 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1414 case ir_unop_f2i
: result
= nir_f2i(&b
, srcs
[0]); break;
1415 case ir_unop_f2u
: result
= nir_f2u(&b
, srcs
[0]); break;
1416 case ir_unop_f2b
: result
= nir_f2b(&b
, srcs
[0]); break;
1417 case ir_unop_i2b
: result
= nir_i2b(&b
, srcs
[0]); break;
1418 case ir_unop_b2i
: result
= nir_b2i(&b
, srcs
[0]); break;
1419 case ir_unop_d2f
: result
= nir_d2f(&b
, srcs
[0]); break;
1420 case ir_unop_f2d
: result
= nir_f2d(&b
, srcs
[0]); break;
1421 case ir_unop_d2i
: result
= nir_d2i(&b
, srcs
[0]); break;
1422 case ir_unop_d2u
: result
= nir_d2u(&b
, srcs
[0]); break;
1423 case ir_unop_d2b
: result
= nir_d2b(&b
, srcs
[0]); break;
1425 assert(supports_ints
);
1426 result
= nir_i2d(&b
, srcs
[0]);
1429 assert(supports_ints
);
1430 result
= nir_u2d(&b
, srcs
[0]);
1434 case ir_unop_bitcast_i2f
:
1435 case ir_unop_bitcast_f2i
:
1436 case ir_unop_bitcast_u2f
:
1437 case ir_unop_bitcast_f2u
:
1438 case ir_unop_subroutine_to_int
:
1440 result
= nir_imov(&b
, srcs
[0]);
1442 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1443 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1444 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1445 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1446 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1447 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1448 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1449 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1450 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1451 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1452 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1453 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1454 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1455 case ir_unop_pack_snorm_2x16
:
1456 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1458 case ir_unop_pack_snorm_4x8
:
1459 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1461 case ir_unop_pack_unorm_2x16
:
1462 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1464 case ir_unop_pack_unorm_4x8
:
1465 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1467 case ir_unop_pack_half_2x16
:
1468 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1470 case ir_unop_unpack_snorm_2x16
:
1471 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1473 case ir_unop_unpack_snorm_4x8
:
1474 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1476 case ir_unop_unpack_unorm_2x16
:
1477 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1479 case ir_unop_unpack_unorm_4x8
:
1480 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1482 case ir_unop_unpack_half_2x16
:
1483 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1485 case ir_unop_pack_double_2x32
:
1486 result
= nir_pack_double_2x32(&b
, srcs
[0]);
1488 case ir_unop_unpack_double_2x32
:
1489 result
= nir_unpack_double_2x32(&b
, srcs
[0]);
1491 case ir_unop_bitfield_reverse
:
1492 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1494 case ir_unop_bit_count
:
1495 result
= nir_bit_count(&b
, srcs
[0]);
1497 case ir_unop_find_msb
:
1499 case GLSL_TYPE_UINT
:
1500 result
= nir_ufind_msb(&b
, srcs
[0]);
1503 result
= nir_ifind_msb(&b
, srcs
[0]);
1506 unreachable("Invalid type for findMSB()");
1509 case ir_unop_find_lsb
:
1510 result
= nir_find_lsb(&b
, srcs
[0]);
1514 switch (ir
->type
->vector_elements
) {
1516 switch (ir
->operands
[0]->type
->vector_elements
) {
1517 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1518 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1519 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1520 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1521 default: unreachable("not reached");
1525 switch (ir
->operands
[0]->type
->vector_elements
) {
1526 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1527 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1528 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1529 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1530 default: unreachable("not reached");
1534 switch (ir
->operands
[0]->type
->vector_elements
) {
1535 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1536 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1537 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1538 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1539 default: unreachable("not reached");
1543 switch (ir
->operands
[0]->type
->vector_elements
) {
1544 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1545 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1546 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1547 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1548 default: unreachable("not reached");
1552 unreachable("not reached");
1555 case ir_unop_get_buffer_size
: {
1556 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1558 nir_intrinsic_get_buffer_size
);
1559 load
->num_components
= ir
->type
->vector_elements
;
1560 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1561 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1562 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1567 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1568 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1571 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1572 : nir_isub(&b
, srcs
[0], srcs
[1]);
1575 result
= type_is_float(out_type
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1576 : nir_imul(&b
, srcs
[0], srcs
[1]);
1579 if (type_is_float(out_type
))
1580 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1581 else if (out_type
== GLSL_TYPE_INT
)
1582 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1584 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1587 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1588 : nir_umod(&b
, srcs
[0], srcs
[1]);
1591 if (type_is_float(out_type
))
1592 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1593 else if (out_type
== GLSL_TYPE_INT
)
1594 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1596 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1599 if (type_is_float(out_type
))
1600 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1601 else if (out_type
== GLSL_TYPE_INT
)
1602 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1604 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1606 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1607 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1608 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1609 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1610 case ir_binop_logic_and
:
1611 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1612 : nir_fand(&b
, srcs
[0], srcs
[1]);
1614 case ir_binop_logic_or
:
1615 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1616 : nir_for(&b
, srcs
[0], srcs
[1]);
1618 case ir_binop_logic_xor
:
1619 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1620 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1622 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1623 case ir_binop_rshift
:
1624 result
= (out_type
== GLSL_TYPE_INT
) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1625 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1627 case ir_binop_imul_high
:
1628 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1629 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1631 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1632 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1634 if (supports_ints
) {
1635 if (type_is_float(types
[0]))
1636 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1637 else if (types
[0] == GLSL_TYPE_INT
)
1638 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1640 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1642 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1645 case ir_binop_greater
:
1646 if (supports_ints
) {
1647 if (type_is_float(types
[0]))
1648 result
= nir_flt(&b
, srcs
[1], srcs
[0]);
1649 else if (types
[0] == GLSL_TYPE_INT
)
1650 result
= nir_ilt(&b
, srcs
[1], srcs
[0]);
1652 result
= nir_ult(&b
, srcs
[1], srcs
[0]);
1654 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1657 case ir_binop_lequal
:
1658 if (supports_ints
) {
1659 if (type_is_float(types
[0]))
1660 result
= nir_fge(&b
, srcs
[1], srcs
[0]);
1661 else if (types
[0] == GLSL_TYPE_INT
)
1662 result
= nir_ige(&b
, srcs
[1], srcs
[0]);
1664 result
= nir_uge(&b
, srcs
[1], srcs
[0]);
1666 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1669 case ir_binop_gequal
:
1670 if (supports_ints
) {
1671 if (type_is_float(types
[0]))
1672 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1673 else if (types
[0] == GLSL_TYPE_INT
)
1674 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1676 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1678 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1681 case ir_binop_equal
:
1682 if (supports_ints
) {
1683 if (type_is_float(types
[0]))
1684 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1686 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1688 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1691 case ir_binop_nequal
:
1692 if (supports_ints
) {
1693 if (type_is_float(types
[0]))
1694 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1696 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1698 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1701 case ir_binop_all_equal
:
1702 if (supports_ints
) {
1703 if (type_is_float(types
[0])) {
1704 switch (ir
->operands
[0]->type
->vector_elements
) {
1705 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1706 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1707 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1708 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1710 unreachable("not reached");
1713 switch (ir
->operands
[0]->type
->vector_elements
) {
1714 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1715 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1716 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1717 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1719 unreachable("not reached");
1723 switch (ir
->operands
[0]->type
->vector_elements
) {
1724 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1725 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1726 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1727 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1729 unreachable("not reached");
1733 case ir_binop_any_nequal
:
1734 if (supports_ints
) {
1735 if (type_is_float(types
[0])) {
1736 switch (ir
->operands
[0]->type
->vector_elements
) {
1737 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1738 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1739 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1740 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1742 unreachable("not reached");
1745 switch (ir
->operands
[0]->type
->vector_elements
) {
1746 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1747 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1748 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1749 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1751 unreachable("not reached");
1755 switch (ir
->operands
[0]->type
->vector_elements
) {
1756 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1757 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1758 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1759 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1761 unreachable("not reached");
1766 switch (ir
->operands
[0]->type
->vector_elements
) {
1767 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1768 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1769 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1771 unreachable("not reached");
1775 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1777 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1780 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1784 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1786 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1788 case ir_triop_bitfield_extract
:
1789 result
= (out_type
== GLSL_TYPE_INT
) ?
1790 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1791 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1793 case ir_quadop_bitfield_insert
:
1794 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1796 case ir_quadop_vector
:
1797 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1801 unreachable("not reached");
1806 nir_visitor::visit(ir_swizzle
*ir
)
1808 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1809 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1810 ir
->type
->vector_elements
, !supports_ints
);
1814 nir_visitor::visit(ir_texture
*ir
)
1821 num_srcs
= 1; /* coordinate */
1826 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1827 num_srcs
= 2; /* coordinate, bias/lod */
1831 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1837 if (ir
->lod_info
.lod
!= NULL
)
1838 num_srcs
= 2; /* coordinate, lod */
1840 num_srcs
= 1; /* coordinate */
1844 op
= nir_texop_txf_ms
;
1845 num_srcs
= 2; /* coordinate, sample_index */
1850 if (ir
->lod_info
.lod
!= NULL
)
1851 num_srcs
= 1; /* lod */
1858 num_srcs
= 1; /* coordinate */
1863 num_srcs
= 1; /* coordinate */
1866 case ir_query_levels
:
1867 op
= nir_texop_query_levels
;
1871 case ir_texture_samples
:
1872 op
= nir_texop_texture_samples
;
1876 case ir_samples_identical
:
1877 op
= nir_texop_samples_identical
;
1878 num_srcs
= 1; /* coordinate */
1882 unreachable("not reached");
1885 if (ir
->projector
!= NULL
)
1887 if (ir
->shadow_comparitor
!= NULL
)
1889 if (ir
->offset
!= NULL
)
1892 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
1895 instr
->sampler_dim
=
1896 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
1897 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
1898 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
1899 if (instr
->is_shadow
)
1900 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
1901 switch (ir
->type
->base_type
) {
1902 case GLSL_TYPE_FLOAT
:
1903 instr
->dest_type
= nir_type_float
;
1906 instr
->dest_type
= nir_type_int
;
1908 case GLSL_TYPE_BOOL
:
1909 case GLSL_TYPE_UINT
:
1910 instr
->dest_type
= nir_type_uint
;
1913 unreachable("not reached");
1916 instr
->texture
= evaluate_deref(&instr
->instr
, ir
->sampler
);
1918 unsigned src_number
= 0;
1920 if (ir
->coordinate
!= NULL
) {
1921 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
1922 instr
->src
[src_number
].src
=
1923 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
1924 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
1928 if (ir
->projector
!= NULL
) {
1929 instr
->src
[src_number
].src
=
1930 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
1931 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
1935 if (ir
->shadow_comparitor
!= NULL
) {
1936 instr
->src
[src_number
].src
=
1937 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparitor
));
1938 instr
->src
[src_number
].src_type
= nir_tex_src_comparitor
;
1942 if (ir
->offset
!= NULL
) {
1943 /* we don't support multiple offsets yet */
1944 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
1946 instr
->src
[src_number
].src
=
1947 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
1948 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
1954 instr
->src
[src_number
].src
=
1955 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
1956 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
1963 if (ir
->lod_info
.lod
!= NULL
) {
1964 instr
->src
[src_number
].src
=
1965 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
1966 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
1972 instr
->src
[src_number
].src
=
1973 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
1974 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
1976 instr
->src
[src_number
].src
=
1977 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
1978 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
1983 instr
->src
[src_number
].src
=
1984 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
1985 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
1990 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
1997 assert(src_number
== num_srcs
);
1999 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2000 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2004 nir_visitor::visit(ir_constant
*ir
)
2007 * We don't know if this variable is an array or struct that gets
2008 * dereferenced, so do the safe thing an make it a variable with a
2009 * constant initializer and return a dereference.
2013 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2014 var
->data
.read_only
= true;
2015 var
->constant_initializer
= constant_copy(ir
, var
);
2017 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2018 this->deref_tail
= &this->deref_head
->deref
;
2022 nir_visitor::visit(ir_dereference_variable
*ir
)
2024 struct hash_entry
*entry
=
2025 _mesa_hash_table_search(this->var_table
, ir
->var
);
2027 nir_variable
*var
= (nir_variable
*) entry
->data
;
2029 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2030 this->deref_head
= deref
;
2031 this->deref_tail
= &deref
->deref
;
2035 nir_visitor::visit(ir_dereference_record
*ir
)
2037 ir
->record
->accept(this);
2039 int field_index
= this->deref_tail
->type
->field_index(ir
->field
);
2040 assert(field_index
>= 0);
2042 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2043 deref
->deref
.type
= ir
->type
;
2044 this->deref_tail
->child
= &deref
->deref
;
2045 this->deref_tail
= &deref
->deref
;
2049 nir_visitor::visit(ir_dereference_array
*ir
)
2051 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2052 deref
->deref
.type
= ir
->type
;
2054 ir_constant
*const_index
= ir
->array_index
->as_constant();
2055 if (const_index
!= NULL
) {
2056 deref
->deref_array_type
= nir_deref_array_type_direct
;
2057 deref
->base_offset
= const_index
->value
.u
[0];
2059 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2061 nir_src_for_ssa(evaluate_rvalue(ir
->array_index
));
2064 ir
->array
->accept(this);
2066 this->deref_tail
->child
= &deref
->deref
;
2067 ralloc_steal(this->deref_tail
, deref
);
2068 this->deref_tail
= &deref
->deref
;
2072 nir_visitor::visit(ir_barrier
*)
2074 nir_intrinsic_instr
*instr
=
2075 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2076 nir_builder_instr_insert(&b
, &instr
->instr
);