2 * Copyright © 2014 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 * Connor Abbott (cwabbott0@gmail.com)
28 #include "glsl_to_nir.h"
29 #include "ir_visitor.h"
30 #include "ir_hierarchical_visitor.h"
32 #include "compiler/nir/nir_control_flow.h"
33 #include "compiler/nir/nir_builder.h"
34 #include "main/imports.h"
37 * pass to lower GLSL IR to NIR
39 * This will lower variable dereferences to loads/stores of corresponding
40 * variables in NIR - the variables will be converted to registers in a later
46 class nir_visitor
: public ir_visitor
49 nir_visitor(nir_shader
*shader
);
52 virtual void visit(ir_variable
*);
53 virtual void visit(ir_function
*);
54 virtual void visit(ir_function_signature
*);
55 virtual void visit(ir_loop
*);
56 virtual void visit(ir_if
*);
57 virtual void visit(ir_discard
*);
58 virtual void visit(ir_loop_jump
*);
59 virtual void visit(ir_return
*);
60 virtual void visit(ir_call
*);
61 virtual void visit(ir_assignment
*);
62 virtual void visit(ir_emit_vertex
*);
63 virtual void visit(ir_end_primitive
*);
64 virtual void visit(ir_expression
*);
65 virtual void visit(ir_swizzle
*);
66 virtual void visit(ir_texture
*);
67 virtual void visit(ir_constant
*);
68 virtual void visit(ir_dereference_variable
*);
69 virtual void visit(ir_dereference_record
*);
70 virtual void visit(ir_dereference_array
*);
71 virtual void visit(ir_barrier
*);
73 void create_function(ir_function_signature
*ir
);
76 void add_instr(nir_instr
*instr
, unsigned num_components
, unsigned bit_size
);
77 nir_ssa_def
*evaluate_rvalue(ir_rvalue
*ir
);
79 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
**srcs
);
80 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
);
81 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
83 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
84 nir_ssa_def
*src2
, nir_ssa_def
*src3
);
89 nir_function_impl
*impl
;
91 nir_ssa_def
*result
; /* result of the expression tree last visited */
93 nir_deref_var
*evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
);
95 /* the head of the dereference chain we're creating */
96 nir_deref_var
*deref_head
;
97 /* the tail of the dereference chain we're creating */
98 nir_deref
*deref_tail
;
100 nir_variable
*var
; /* variable created by ir_variable visitor */
102 /* whether the IR we're operating on is per-function or global */
105 /* map of ir_variable -> nir_variable */
106 struct hash_table
*var_table
;
108 /* map of ir_function_signature -> nir_function_overload */
109 struct hash_table
*overload_table
;
113 * This visitor runs before the main visitor, calling create_function() for
114 * each function so that the main visitor can resolve forward references in
118 class nir_function_visitor
: public ir_hierarchical_visitor
121 nir_function_visitor(nir_visitor
*v
) : visitor(v
)
124 virtual ir_visitor_status
visit_enter(ir_function
*);
127 nir_visitor
*visitor
;
130 } /* end of anonymous namespace */
133 nir_remap_attributes(nir_shader
*shader
)
135 nir_foreach_variable(var
, &shader
->inputs
) {
136 var
->data
.location
+= _mesa_bitcount_64(shader
->info
.double_inputs_read
&
137 BITFIELD64_MASK(var
->data
.location
));
140 /* Once the remap is done, reset double_inputs_read, so later it will have
141 * which location/slots are doubles */
142 shader
->info
.double_inputs_read
= 0;
146 glsl_to_nir(const struct gl_shader_program
*shader_prog
,
147 gl_shader_stage stage
,
148 const nir_shader_compiler_options
*options
)
150 struct gl_linked_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
152 nir_shader
*shader
= nir_shader_create(NULL
, stage
, options
,
155 nir_visitor
v1(shader
);
156 nir_function_visitor
v2(&v1
);
158 visit_exec_list(sh
->ir
, &v1
);
160 nir_lower_constant_initializers(shader
, (nir_variable_mode
)~0);
162 /* Remap the locations to slots so those requiring two slots will occupy
163 * two locations. For instance, if we have in the IR code a dvec3 attr0 in
164 * location 0 and vec4 attr1 in location 1, in NIR attr0 will use
165 * locations/slots 0 and 1, and attr1 will use location/slot 2 */
166 if (shader
->stage
== MESA_SHADER_VERTEX
)
167 nir_remap_attributes(shader
);
169 shader
->info
.name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
170 if (shader_prog
->Label
)
171 shader
->info
.label
= ralloc_strdup(shader
, shader_prog
->Label
);
172 shader
->info
.has_transform_feedback_varyings
=
173 shader_prog
->TransformFeedback
.NumVarying
> 0;
178 nir_visitor::nir_visitor(nir_shader
*shader
)
180 this->supports_ints
= shader
->options
->native_integers
;
181 this->shader
= shader
;
182 this->is_global
= true;
183 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
184 _mesa_key_pointer_equal
);
185 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
186 _mesa_key_pointer_equal
);
190 this->deref_head
= NULL
;
191 this->deref_tail
= NULL
;
192 memset(&this->b
, 0, sizeof(this->b
));
195 nir_visitor::~nir_visitor()
197 _mesa_hash_table_destroy(this->var_table
, NULL
);
198 _mesa_hash_table_destroy(this->overload_table
, NULL
);
202 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
205 ralloc_steal(mem_ctx
, this->deref_head
);
206 return this->deref_head
;
209 static nir_constant
*
210 constant_copy(ir_constant
*ir
, void *mem_ctx
)
215 nir_constant
*ret
= ralloc(mem_ctx
, nir_constant
);
217 const unsigned rows
= ir
->type
->vector_elements
;
218 const unsigned cols
= ir
->type
->matrix_columns
;
221 ret
->num_elements
= 0;
222 switch (ir
->type
->base_type
) {
224 /* Only float base types can be matrices. */
227 for (unsigned r
= 0; r
< rows
; r
++)
228 ret
->values
[0].u32
[r
] = ir
->value
.u
[r
];
233 /* Only float base types can be matrices. */
236 for (unsigned r
= 0; r
< rows
; r
++)
237 ret
->values
[0].i32
[r
] = ir
->value
.i
[r
];
241 case GLSL_TYPE_FLOAT
:
242 for (unsigned c
= 0; c
< cols
; c
++) {
243 for (unsigned r
= 0; r
< rows
; r
++)
244 ret
->values
[c
].f32
[r
] = ir
->value
.f
[c
* rows
+ r
];
248 case GLSL_TYPE_DOUBLE
:
249 for (unsigned c
= 0; c
< cols
; c
++) {
250 for (unsigned r
= 0; r
< rows
; r
++)
251 ret
->values
[c
].f64
[r
] = ir
->value
.d
[c
* rows
+ r
];
255 case GLSL_TYPE_UINT64
:
256 /* Only float base types can be matrices. */
259 for (unsigned r
= 0; r
< rows
; r
++)
260 ret
->values
[0].u64
[r
] = ir
->value
.u64
[r
];
263 case GLSL_TYPE_INT64
:
264 /* Only float base types can be matrices. */
267 for (unsigned r
= 0; r
< rows
; r
++)
268 ret
->values
[0].i64
[r
] = ir
->value
.i64
[r
];
272 /* Only float base types can be matrices. */
275 for (unsigned r
= 0; r
< rows
; r
++)
276 ret
->values
[0].u32
[r
] = ir
->value
.b
[r
] ? NIR_TRUE
: NIR_FALSE
;
280 case GLSL_TYPE_STRUCT
:
281 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
283 ret
->num_elements
= ir
->type
->length
;
286 foreach_in_list(ir_constant
, field
, &ir
->components
) {
287 ret
->elements
[i
] = constant_copy(field
, mem_ctx
);
292 case GLSL_TYPE_ARRAY
:
293 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
295 ret
->num_elements
= ir
->type
->length
;
297 for (i
= 0; i
< ir
->type
->length
; i
++)
298 ret
->elements
[i
] = constant_copy(ir
->array_elements
[i
], mem_ctx
);
302 unreachable("not reached");
309 nir_visitor::visit(ir_variable
*ir
)
311 /* TODO: In future we should switch to using the NIR lowering pass but for
312 * now just ignore these variables as GLSL IR should have lowered them.
313 * Anything remaining are just dead vars that weren't cleaned up.
315 if (ir
->data
.mode
== ir_var_shader_shared
)
318 nir_variable
*var
= ralloc(shader
, nir_variable
);
319 var
->type
= ir
->type
;
320 var
->name
= ralloc_strdup(var
, ir
->name
);
322 var
->data
.read_only
= ir
->data
.read_only
;
323 var
->data
.centroid
= ir
->data
.centroid
;
324 var
->data
.sample
= ir
->data
.sample
;
325 var
->data
.patch
= ir
->data
.patch
;
326 var
->data
.invariant
= ir
->data
.invariant
;
327 var
->data
.location
= ir
->data
.location
;
328 var
->data
.compact
= false;
330 switch(ir
->data
.mode
) {
332 case ir_var_temporary
:
334 var
->data
.mode
= nir_var_global
;
336 var
->data
.mode
= nir_var_local
;
339 case ir_var_function_in
:
340 case ir_var_function_out
:
341 case ir_var_function_inout
:
342 case ir_var_const_in
:
343 var
->data
.mode
= nir_var_local
;
346 case ir_var_shader_in
:
347 if (shader
->stage
== MESA_SHADER_FRAGMENT
&&
348 ir
->data
.location
== VARYING_SLOT_FACE
) {
349 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
350 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
351 var
->data
.mode
= nir_var_system_value
;
352 } else if (shader
->stage
== MESA_SHADER_GEOMETRY
&&
353 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
354 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
355 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
356 var
->data
.mode
= nir_var_system_value
;
358 var
->data
.mode
= nir_var_shader_in
;
360 if (shader
->stage
== MESA_SHADER_TESS_EVAL
&&
361 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
362 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
363 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
367 /* Mark all the locations that require two slots */
368 if (glsl_type_is_dual_slot(glsl_without_array(var
->type
))) {
369 for (uint i
= 0; i
< glsl_count_attribute_slots(var
->type
, true); i
++) {
370 uint64_t bitfield
= BITFIELD64_BIT(var
->data
.location
+ i
);
371 shader
->info
.double_inputs_read
|= bitfield
;
376 case ir_var_shader_out
:
377 var
->data
.mode
= nir_var_shader_out
;
378 if (shader
->stage
== MESA_SHADER_TESS_CTRL
&&
379 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
380 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
381 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
386 var
->data
.mode
= nir_var_uniform
;
389 case ir_var_shader_storage
:
390 var
->data
.mode
= nir_var_shader_storage
;
393 case ir_var_system_value
:
394 var
->data
.mode
= nir_var_system_value
;
398 unreachable("not reached");
401 var
->data
.interpolation
= ir
->data
.interpolation
;
402 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
403 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
404 var
->data
.location_frac
= ir
->data
.location_frac
;
406 switch (ir
->data
.depth_layout
) {
407 case ir_depth_layout_none
:
408 var
->data
.depth_layout
= nir_depth_layout_none
;
410 case ir_depth_layout_any
:
411 var
->data
.depth_layout
= nir_depth_layout_any
;
413 case ir_depth_layout_greater
:
414 var
->data
.depth_layout
= nir_depth_layout_greater
;
416 case ir_depth_layout_less
:
417 var
->data
.depth_layout
= nir_depth_layout_less
;
419 case ir_depth_layout_unchanged
:
420 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
423 unreachable("not reached");
426 var
->data
.index
= ir
->data
.index
;
427 var
->data
.descriptor_set
= 0;
428 var
->data
.binding
= ir
->data
.binding
;
429 var
->data
.offset
= ir
->data
.offset
;
430 var
->data
.image
.read_only
= ir
->data
.memory_read_only
;
431 var
->data
.image
.write_only
= ir
->data
.memory_write_only
;
432 var
->data
.image
.coherent
= ir
->data
.memory_coherent
;
433 var
->data
.image
._volatile
= ir
->data
.memory_volatile
;
434 var
->data
.image
.restrict_flag
= ir
->data
.memory_restrict
;
435 var
->data
.image
.format
= ir
->data
.image_format
;
436 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
438 var
->num_state_slots
= ir
->get_num_state_slots();
439 if (var
->num_state_slots
> 0) {
440 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
441 var
->num_state_slots
);
443 ir_state_slot
*state_slots
= ir
->get_state_slots();
444 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
445 for (unsigned j
= 0; j
< 5; j
++)
446 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
447 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
450 var
->state_slots
= NULL
;
453 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
455 var
->interface_type
= ir
->get_interface_type();
457 if (var
->data
.mode
== nir_var_local
)
458 nir_function_impl_add_variable(impl
, var
);
460 nir_shader_add_variable(shader
, var
);
462 _mesa_hash_table_insert(var_table
, ir
, var
);
467 nir_function_visitor::visit_enter(ir_function
*ir
)
469 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
470 visitor
->create_function(sig
);
472 return visit_continue_with_parent
;
476 nir_visitor::create_function(ir_function_signature
*ir
)
478 if (ir
->is_intrinsic())
481 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
483 assert(ir
->parameters
.is_empty());
484 assert(ir
->return_type
== glsl_type::void_type
);
486 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
490 nir_visitor::visit(ir_function
*ir
)
492 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
497 nir_visitor::visit(ir_function_signature
*ir
)
499 if (ir
->is_intrinsic())
502 struct hash_entry
*entry
=
503 _mesa_hash_table_search(this->overload_table
, ir
);
506 nir_function
*func
= (nir_function
*) entry
->data
;
508 if (ir
->is_defined
) {
509 nir_function_impl
*impl
= nir_function_impl_create(func
);
512 assert(strcmp(func
->name
, "main") == 0);
513 assert(ir
->parameters
.is_empty());
514 assert(func
->return_type
== glsl_type::void_type
);
516 this->is_global
= false;
518 nir_builder_init(&b
, impl
);
519 b
.cursor
= nir_after_cf_list(&impl
->body
);
520 visit_exec_list(&ir
->body
, this);
522 this->is_global
= true;
529 nir_visitor::visit(ir_loop
*ir
)
532 visit_exec_list(&ir
->body_instructions
, this);
533 nir_pop_loop(&b
, NULL
);
537 nir_visitor::visit(ir_if
*ir
)
539 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
540 visit_exec_list(&ir
->then_instructions
, this);
541 nir_push_else(&b
, NULL
);
542 visit_exec_list(&ir
->else_instructions
, this);
543 nir_pop_if(&b
, NULL
);
547 nir_visitor::visit(ir_discard
*ir
)
550 * discards aren't treated as control flow, because before we lower them
551 * they can appear anywhere in the shader and the stuff after them may still
552 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
553 * discards will be immediately followed by a return.
556 nir_intrinsic_instr
*discard
;
558 discard
= nir_intrinsic_instr_create(this->shader
,
559 nir_intrinsic_discard_if
);
561 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
563 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
566 nir_builder_instr_insert(&b
, &discard
->instr
);
570 nir_visitor::visit(ir_emit_vertex
*ir
)
572 nir_intrinsic_instr
*instr
=
573 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
574 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
575 nir_builder_instr_insert(&b
, &instr
->instr
);
579 nir_visitor::visit(ir_end_primitive
*ir
)
581 nir_intrinsic_instr
*instr
=
582 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
583 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
584 nir_builder_instr_insert(&b
, &instr
->instr
);
588 nir_visitor::visit(ir_loop_jump
*ir
)
592 case ir_loop_jump::jump_break
:
593 type
= nir_jump_break
;
595 case ir_loop_jump::jump_continue
:
596 type
= nir_jump_continue
;
599 unreachable("not reached");
602 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
603 nir_builder_instr_insert(&b
, &instr
->instr
);
607 nir_visitor::visit(ir_return
*ir
)
609 if (ir
->value
!= NULL
) {
610 nir_intrinsic_instr
*copy
=
611 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
613 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
614 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
617 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
618 nir_builder_instr_insert(&b
, &instr
->instr
);
622 nir_visitor::visit(ir_call
*ir
)
624 if (ir
->callee
->is_intrinsic()) {
627 switch (ir
->callee
->intrinsic_id
) {
628 case ir_intrinsic_atomic_counter_read
:
629 op
= nir_intrinsic_atomic_counter_read_var
;
631 case ir_intrinsic_atomic_counter_increment
:
632 op
= nir_intrinsic_atomic_counter_inc_var
;
634 case ir_intrinsic_atomic_counter_predecrement
:
635 op
= nir_intrinsic_atomic_counter_dec_var
;
637 case ir_intrinsic_atomic_counter_add
:
638 op
= nir_intrinsic_atomic_counter_add_var
;
640 case ir_intrinsic_atomic_counter_and
:
641 op
= nir_intrinsic_atomic_counter_and_var
;
643 case ir_intrinsic_atomic_counter_or
:
644 op
= nir_intrinsic_atomic_counter_or_var
;
646 case ir_intrinsic_atomic_counter_xor
:
647 op
= nir_intrinsic_atomic_counter_xor_var
;
649 case ir_intrinsic_atomic_counter_min
:
650 op
= nir_intrinsic_atomic_counter_min_var
;
652 case ir_intrinsic_atomic_counter_max
:
653 op
= nir_intrinsic_atomic_counter_max_var
;
655 case ir_intrinsic_atomic_counter_exchange
:
656 op
= nir_intrinsic_atomic_counter_exchange_var
;
658 case ir_intrinsic_atomic_counter_comp_swap
:
659 op
= nir_intrinsic_atomic_counter_comp_swap_var
;
661 case ir_intrinsic_image_load
:
662 op
= nir_intrinsic_image_load
;
664 case ir_intrinsic_image_store
:
665 op
= nir_intrinsic_image_store
;
667 case ir_intrinsic_image_atomic_add
:
668 op
= nir_intrinsic_image_atomic_add
;
670 case ir_intrinsic_image_atomic_min
:
671 op
= nir_intrinsic_image_atomic_min
;
673 case ir_intrinsic_image_atomic_max
:
674 op
= nir_intrinsic_image_atomic_max
;
676 case ir_intrinsic_image_atomic_and
:
677 op
= nir_intrinsic_image_atomic_and
;
679 case ir_intrinsic_image_atomic_or
:
680 op
= nir_intrinsic_image_atomic_or
;
682 case ir_intrinsic_image_atomic_xor
:
683 op
= nir_intrinsic_image_atomic_xor
;
685 case ir_intrinsic_image_atomic_exchange
:
686 op
= nir_intrinsic_image_atomic_exchange
;
688 case ir_intrinsic_image_atomic_comp_swap
:
689 op
= nir_intrinsic_image_atomic_comp_swap
;
691 case ir_intrinsic_memory_barrier
:
692 op
= nir_intrinsic_memory_barrier
;
694 case ir_intrinsic_image_size
:
695 op
= nir_intrinsic_image_size
;
697 case ir_intrinsic_image_samples
:
698 op
= nir_intrinsic_image_samples
;
700 case ir_intrinsic_ssbo_store
:
701 op
= nir_intrinsic_store_ssbo
;
703 case ir_intrinsic_ssbo_load
:
704 op
= nir_intrinsic_load_ssbo
;
706 case ir_intrinsic_ssbo_atomic_add
:
707 op
= nir_intrinsic_ssbo_atomic_add
;
709 case ir_intrinsic_ssbo_atomic_and
:
710 op
= nir_intrinsic_ssbo_atomic_and
;
712 case ir_intrinsic_ssbo_atomic_or
:
713 op
= nir_intrinsic_ssbo_atomic_or
;
715 case ir_intrinsic_ssbo_atomic_xor
:
716 op
= nir_intrinsic_ssbo_atomic_xor
;
718 case ir_intrinsic_ssbo_atomic_min
:
719 assert(ir
->return_deref
);
720 if (ir
->return_deref
->type
== glsl_type::int_type
)
721 op
= nir_intrinsic_ssbo_atomic_imin
;
722 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
723 op
= nir_intrinsic_ssbo_atomic_umin
;
725 unreachable("Invalid type");
727 case ir_intrinsic_ssbo_atomic_max
:
728 assert(ir
->return_deref
);
729 if (ir
->return_deref
->type
== glsl_type::int_type
)
730 op
= nir_intrinsic_ssbo_atomic_imax
;
731 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
732 op
= nir_intrinsic_ssbo_atomic_umax
;
734 unreachable("Invalid type");
736 case ir_intrinsic_ssbo_atomic_exchange
:
737 op
= nir_intrinsic_ssbo_atomic_exchange
;
739 case ir_intrinsic_ssbo_atomic_comp_swap
:
740 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
742 case ir_intrinsic_shader_clock
:
743 op
= nir_intrinsic_shader_clock
;
745 case ir_intrinsic_group_memory_barrier
:
746 op
= nir_intrinsic_group_memory_barrier
;
748 case ir_intrinsic_memory_barrier_atomic_counter
:
749 op
= nir_intrinsic_memory_barrier_atomic_counter
;
751 case ir_intrinsic_memory_barrier_buffer
:
752 op
= nir_intrinsic_memory_barrier_buffer
;
754 case ir_intrinsic_memory_barrier_image
:
755 op
= nir_intrinsic_memory_barrier_image
;
757 case ir_intrinsic_memory_barrier_shared
:
758 op
= nir_intrinsic_memory_barrier_shared
;
760 case ir_intrinsic_shared_load
:
761 op
= nir_intrinsic_load_shared
;
763 case ir_intrinsic_shared_store
:
764 op
= nir_intrinsic_store_shared
;
766 case ir_intrinsic_shared_atomic_add
:
767 op
= nir_intrinsic_shared_atomic_add
;
769 case ir_intrinsic_shared_atomic_and
:
770 op
= nir_intrinsic_shared_atomic_and
;
772 case ir_intrinsic_shared_atomic_or
:
773 op
= nir_intrinsic_shared_atomic_or
;
775 case ir_intrinsic_shared_atomic_xor
:
776 op
= nir_intrinsic_shared_atomic_xor
;
778 case ir_intrinsic_shared_atomic_min
:
779 assert(ir
->return_deref
);
780 if (ir
->return_deref
->type
== glsl_type::int_type
)
781 op
= nir_intrinsic_shared_atomic_imin
;
782 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
783 op
= nir_intrinsic_shared_atomic_umin
;
785 unreachable("Invalid type");
787 case ir_intrinsic_shared_atomic_max
:
788 assert(ir
->return_deref
);
789 if (ir
->return_deref
->type
== glsl_type::int_type
)
790 op
= nir_intrinsic_shared_atomic_imax
;
791 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
792 op
= nir_intrinsic_shared_atomic_umax
;
794 unreachable("Invalid type");
796 case ir_intrinsic_shared_atomic_exchange
:
797 op
= nir_intrinsic_shared_atomic_exchange
;
799 case ir_intrinsic_shared_atomic_comp_swap
:
800 op
= nir_intrinsic_shared_atomic_comp_swap
;
802 case ir_intrinsic_vote_any
:
803 op
= nir_intrinsic_vote_any
;
805 case ir_intrinsic_vote_all
:
806 op
= nir_intrinsic_vote_all
;
808 case ir_intrinsic_vote_eq
:
809 op
= nir_intrinsic_vote_eq
;
811 case ir_intrinsic_ballot
:
812 op
= nir_intrinsic_ballot
;
814 case ir_intrinsic_read_invocation
:
815 op
= nir_intrinsic_read_invocation
;
817 case ir_intrinsic_read_first_invocation
:
818 op
= nir_intrinsic_read_first_invocation
;
821 unreachable("not reached");
824 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
825 nir_dest
*dest
= &instr
->dest
;
828 case nir_intrinsic_atomic_counter_read_var
:
829 case nir_intrinsic_atomic_counter_inc_var
:
830 case nir_intrinsic_atomic_counter_dec_var
:
831 case nir_intrinsic_atomic_counter_add_var
:
832 case nir_intrinsic_atomic_counter_min_var
:
833 case nir_intrinsic_atomic_counter_max_var
:
834 case nir_intrinsic_atomic_counter_and_var
:
835 case nir_intrinsic_atomic_counter_or_var
:
836 case nir_intrinsic_atomic_counter_xor_var
:
837 case nir_intrinsic_atomic_counter_exchange_var
:
838 case nir_intrinsic_atomic_counter_comp_swap_var
: {
839 /* Set the counter variable dereference. */
840 exec_node
*param
= ir
->actual_parameters
.get_head();
841 ir_dereference
*counter
= (ir_dereference
*)param
;
843 instr
->variables
[0] = evaluate_deref(&instr
->instr
, counter
);
844 param
= param
->get_next();
846 /* Set the intrinsic destination. */
847 if (ir
->return_deref
) {
848 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
851 /* Set the intrinsic parameters. */
852 if (!param
->is_tail_sentinel()) {
854 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
855 param
= param
->get_next();
858 if (!param
->is_tail_sentinel()) {
860 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
861 param
= param
->get_next();
864 nir_builder_instr_insert(&b
, &instr
->instr
);
867 case nir_intrinsic_image_load
:
868 case nir_intrinsic_image_store
:
869 case nir_intrinsic_image_atomic_add
:
870 case nir_intrinsic_image_atomic_min
:
871 case nir_intrinsic_image_atomic_max
:
872 case nir_intrinsic_image_atomic_and
:
873 case nir_intrinsic_image_atomic_or
:
874 case nir_intrinsic_image_atomic_xor
:
875 case nir_intrinsic_image_atomic_exchange
:
876 case nir_intrinsic_image_atomic_comp_swap
:
877 case nir_intrinsic_image_samples
:
878 case nir_intrinsic_image_size
: {
879 nir_ssa_undef_instr
*instr_undef
=
880 nir_ssa_undef_instr_create(shader
, 1, 32);
881 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
883 /* Set the image variable dereference. */
884 exec_node
*param
= ir
->actual_parameters
.get_head();
885 ir_dereference
*image
= (ir_dereference
*)param
;
886 const glsl_type
*type
=
887 image
->variable_referenced()->type
->without_array();
889 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
890 param
= param
->get_next();
892 /* Set the intrinsic destination. */
893 if (ir
->return_deref
) {
894 unsigned num_components
= ir
->return_deref
->type
->vector_elements
;
895 if (instr
->intrinsic
== nir_intrinsic_image_size
)
896 instr
->num_components
= num_components
;
897 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
898 num_components
, 32, NULL
);
901 if (op
== nir_intrinsic_image_size
||
902 op
== nir_intrinsic_image_samples
) {
903 nir_builder_instr_insert(&b
, &instr
->instr
);
907 /* Set the address argument, extending the coordinate vector to four
910 nir_ssa_def
*src_addr
=
911 evaluate_rvalue((ir_dereference
*)param
);
912 nir_ssa_def
*srcs
[4];
914 for (int i
= 0; i
< 4; i
++) {
915 if (i
< type
->coordinate_components())
916 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
918 srcs
[i
] = &instr_undef
->def
;
921 instr
->src
[0] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
922 param
= param
->get_next();
924 /* Set the sample argument, which is undefined for single-sample
927 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
929 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
930 param
= param
->get_next();
932 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
935 /* Set the intrinsic parameters. */
936 if (!param
->is_tail_sentinel()) {
938 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
939 param
= param
->get_next();
942 if (!param
->is_tail_sentinel()) {
944 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
945 param
= param
->get_next();
947 nir_builder_instr_insert(&b
, &instr
->instr
);
950 case nir_intrinsic_memory_barrier
:
951 case nir_intrinsic_group_memory_barrier
:
952 case nir_intrinsic_memory_barrier_atomic_counter
:
953 case nir_intrinsic_memory_barrier_buffer
:
954 case nir_intrinsic_memory_barrier_image
:
955 case nir_intrinsic_memory_barrier_shared
:
956 nir_builder_instr_insert(&b
, &instr
->instr
);
958 case nir_intrinsic_shader_clock
:
959 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 2, 32, NULL
);
960 instr
->num_components
= 2;
961 nir_builder_instr_insert(&b
, &instr
->instr
);
963 case nir_intrinsic_store_ssbo
: {
964 exec_node
*param
= ir
->actual_parameters
.get_head();
965 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
967 param
= param
->get_next();
968 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
970 param
= param
->get_next();
971 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
973 param
= param
->get_next();
974 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
977 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
978 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
979 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
980 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
981 instr
->num_components
= val
->type
->vector_elements
;
983 nir_builder_instr_insert(&b
, &instr
->instr
);
986 case nir_intrinsic_load_ssbo
: {
987 exec_node
*param
= ir
->actual_parameters
.get_head();
988 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
990 param
= param
->get_next();
991 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
993 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
994 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
996 const glsl_type
*type
= ir
->return_deref
->var
->type
;
997 instr
->num_components
= type
->vector_elements
;
999 /* Setup destination register */
1000 unsigned bit_size
= glsl_get_bit_size(type
);
1001 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1002 type
->vector_elements
, bit_size
, NULL
);
1004 /* Insert the created nir instruction now since in the case of boolean
1005 * result we will need to emit another instruction after it
1007 nir_builder_instr_insert(&b
, &instr
->instr
);
1010 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
1011 * consider a true boolean to be ~0. Fix this up with a != 0
1014 if (type
->is_boolean()) {
1015 nir_alu_instr
*load_ssbo_compare
=
1016 nir_alu_instr_create(shader
, nir_op_ine
);
1017 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
1018 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
1019 load_ssbo_compare
->src
[1].src
=
1020 nir_src_for_ssa(nir_imm_int(&b
, 0));
1021 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
1022 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
1023 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
1024 &load_ssbo_compare
->dest
.dest
,
1025 type
->vector_elements
, bit_size
, NULL
);
1026 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
1027 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
1028 dest
= &load_ssbo_compare
->dest
.dest
;
1032 case nir_intrinsic_ssbo_atomic_add
:
1033 case nir_intrinsic_ssbo_atomic_imin
:
1034 case nir_intrinsic_ssbo_atomic_umin
:
1035 case nir_intrinsic_ssbo_atomic_imax
:
1036 case nir_intrinsic_ssbo_atomic_umax
:
1037 case nir_intrinsic_ssbo_atomic_and
:
1038 case nir_intrinsic_ssbo_atomic_or
:
1039 case nir_intrinsic_ssbo_atomic_xor
:
1040 case nir_intrinsic_ssbo_atomic_exchange
:
1041 case nir_intrinsic_ssbo_atomic_comp_swap
: {
1042 int param_count
= ir
->actual_parameters
.length();
1043 assert(param_count
== 3 || param_count
== 4);
1046 exec_node
*param
= ir
->actual_parameters
.get_head();
1047 ir_instruction
*inst
= (ir_instruction
*) param
;
1048 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1051 param
= param
->get_next();
1052 inst
= (ir_instruction
*) param
;
1053 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1055 /* data1 parameter (this is always present) */
1056 param
= param
->get_next();
1057 inst
= (ir_instruction
*) param
;
1058 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1060 /* data2 parameter (only with atomic_comp_swap) */
1061 if (param_count
== 4) {
1062 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
1063 param
= param
->get_next();
1064 inst
= (ir_instruction
*) param
;
1065 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1069 assert(ir
->return_deref
);
1070 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1071 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1072 nir_builder_instr_insert(&b
, &instr
->instr
);
1075 case nir_intrinsic_load_shared
: {
1076 exec_node
*param
= ir
->actual_parameters
.get_head();
1077 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1079 nir_intrinsic_set_base(instr
, 0);
1080 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1082 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1083 instr
->num_components
= type
->vector_elements
;
1085 /* Setup destination register */
1086 unsigned bit_size
= glsl_get_bit_size(type
);
1087 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1088 type
->vector_elements
, bit_size
, NULL
);
1090 nir_builder_instr_insert(&b
, &instr
->instr
);
1093 case nir_intrinsic_store_shared
: {
1094 exec_node
*param
= ir
->actual_parameters
.get_head();
1095 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1097 param
= param
->get_next();
1098 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1100 param
= param
->get_next();
1101 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1104 nir_intrinsic_set_base(instr
, 0);
1105 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1107 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1109 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1110 instr
->num_components
= val
->type
->vector_elements
;
1112 nir_builder_instr_insert(&b
, &instr
->instr
);
1115 case nir_intrinsic_shared_atomic_add
:
1116 case nir_intrinsic_shared_atomic_imin
:
1117 case nir_intrinsic_shared_atomic_umin
:
1118 case nir_intrinsic_shared_atomic_imax
:
1119 case nir_intrinsic_shared_atomic_umax
:
1120 case nir_intrinsic_shared_atomic_and
:
1121 case nir_intrinsic_shared_atomic_or
:
1122 case nir_intrinsic_shared_atomic_xor
:
1123 case nir_intrinsic_shared_atomic_exchange
:
1124 case nir_intrinsic_shared_atomic_comp_swap
: {
1125 int param_count
= ir
->actual_parameters
.length();
1126 assert(param_count
== 2 || param_count
== 3);
1129 exec_node
*param
= ir
->actual_parameters
.get_head();
1130 ir_instruction
*inst
= (ir_instruction
*) param
;
1131 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1133 /* data1 parameter (this is always present) */
1134 param
= param
->get_next();
1135 inst
= (ir_instruction
*) param
;
1136 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1138 /* data2 parameter (only with atomic_comp_swap) */
1139 if (param_count
== 3) {
1140 assert(op
== nir_intrinsic_shared_atomic_comp_swap
);
1141 param
= param
->get_next();
1142 inst
= (ir_instruction
*) param
;
1144 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1148 assert(ir
->return_deref
);
1149 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1150 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1151 ir
->return_deref
->type
->vector_elements
,
1153 nir_builder_instr_insert(&b
, &instr
->instr
);
1156 case nir_intrinsic_vote_any
:
1157 case nir_intrinsic_vote_all
:
1158 case nir_intrinsic_vote_eq
: {
1159 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
1161 instr
->variables
[0] = evaluate_deref(&instr
->instr
, ir
->return_deref
);
1163 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1164 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1166 nir_builder_instr_insert(&b
, &instr
->instr
);
1170 case nir_intrinsic_ballot
: {
1171 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1172 ir
->return_deref
->type
->vector_elements
, 64, NULL
);
1174 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1175 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1177 nir_builder_instr_insert(&b
, &instr
->instr
);
1180 case nir_intrinsic_read_invocation
: {
1181 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1182 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1183 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1185 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1186 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1188 ir_rvalue
*invocation
= (ir_rvalue
*) ir
->actual_parameters
.get_head()->next
;
1189 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(invocation
));
1191 nir_builder_instr_insert(&b
, &instr
->instr
);
1194 case nir_intrinsic_read_first_invocation
: {
1195 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1196 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1197 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1199 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1200 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1202 nir_builder_instr_insert(&b
, &instr
->instr
);
1206 unreachable("not reached");
1209 if (ir
->return_deref
) {
1210 nir_intrinsic_instr
*store_instr
=
1211 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
1212 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1213 nir_intrinsic_set_write_mask(store_instr
,
1214 (1 << store_instr
->num_components
) - 1);
1216 store_instr
->variables
[0] =
1217 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
1218 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
1220 nir_builder_instr_insert(&b
, &store_instr
->instr
);
1226 struct hash_entry
*entry
=
1227 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1229 nir_function
*callee
= (nir_function
*) entry
->data
;
1231 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
1234 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
1235 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
1239 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
1240 nir_builder_instr_insert(&b
, &instr
->instr
);
1244 nir_visitor::visit(ir_assignment
*ir
)
1246 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1248 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1249 ir
->lhs
->variable_referenced()->data
.precise
;
1251 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1252 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1253 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1254 nir_intrinsic_instr
*copy
=
1255 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1257 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1258 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1260 if (ir
->condition
) {
1261 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1262 nir_builder_instr_insert(&b
, ©
->instr
);
1263 nir_pop_if(&b
, NULL
);
1265 nir_builder_instr_insert(&b
, ©
->instr
);
1270 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1272 ir
->lhs
->accept(this);
1273 nir_deref_var
*lhs_deref
= this->deref_head
;
1274 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1276 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1277 /* GLSL IR will give us the input to the write-masked assignment in a
1278 * single packed vector. So, for example, if the writemask is xzw, then
1279 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1283 unsigned component
= 0;
1284 for (unsigned i
= 0; i
< 4; i
++) {
1285 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1287 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1290 nir_intrinsic_instr
*store
=
1291 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1292 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1293 nir_intrinsic_set_write_mask(store
, ir
->write_mask
);
1294 store
->variables
[0] = nir_deref_var_clone(lhs_deref
, store
);
1295 store
->src
[0] = nir_src_for_ssa(src
);
1297 if (ir
->condition
) {
1298 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1299 nir_builder_instr_insert(&b
, &store
->instr
);
1300 nir_pop_if(&b
, NULL
);
1302 nir_builder_instr_insert(&b
, &store
->instr
);
1307 * Given an instruction, returns a pointer to its destination or NULL if there
1308 * is no destination.
1310 * Note that this only handles instructions we generate at this level.
1313 get_instr_dest(nir_instr
*instr
)
1315 nir_alu_instr
*alu_instr
;
1316 nir_intrinsic_instr
*intrinsic_instr
;
1317 nir_tex_instr
*tex_instr
;
1319 switch (instr
->type
) {
1320 case nir_instr_type_alu
:
1321 alu_instr
= nir_instr_as_alu(instr
);
1322 return &alu_instr
->dest
.dest
;
1324 case nir_instr_type_intrinsic
:
1325 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1326 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1327 return &intrinsic_instr
->dest
;
1331 case nir_instr_type_tex
:
1332 tex_instr
= nir_instr_as_tex(instr
);
1333 return &tex_instr
->dest
;
1336 unreachable("not reached");
1343 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1346 nir_dest
*dest
= get_instr_dest(instr
);
1349 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1351 nir_builder_instr_insert(&b
, instr
);
1354 assert(dest
->is_ssa
);
1355 this->result
= &dest
->ssa
;
1360 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1363 if (ir
->as_dereference() || ir
->as_constant()) {
1365 * A dereference is being used on the right hand side, which means we
1366 * must emit a variable load.
1369 nir_intrinsic_instr
*load_instr
=
1370 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1371 load_instr
->num_components
= ir
->type
->vector_elements
;
1372 load_instr
->variables
[0] = this->deref_head
;
1373 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1374 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1375 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
, bit_size
);
1378 return this->result
;
1382 type_is_float(glsl_base_type type
)
1384 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
;
1388 type_is_signed(glsl_base_type type
)
1390 return type
== GLSL_TYPE_INT
|| type
== GLSL_TYPE_INT64
;
1394 nir_visitor::visit(ir_expression
*ir
)
1396 /* Some special cases */
1397 switch (ir
->operation
) {
1398 case ir_binop_ubo_load
: {
1399 nir_intrinsic_instr
*load
=
1400 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1401 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1402 load
->num_components
= ir
->type
->vector_elements
;
1403 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1404 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1405 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1408 * In UBO's, a true boolean value is any non-zero value, but we consider
1409 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1412 if (ir
->type
->is_boolean())
1413 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1418 case ir_unop_interpolate_at_centroid
:
1419 case ir_binop_interpolate_at_offset
:
1420 case ir_binop_interpolate_at_sample
: {
1421 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1422 ir_swizzle
*swizzle
= NULL
;
1424 /* the api does not allow a swizzle here, but the varying packing code
1425 * may have pushed one into here.
1427 swizzle
= ir
->operands
[0]->as_swizzle();
1429 deref
= swizzle
->val
->as_dereference();
1433 deref
->accept(this);
1435 nir_intrinsic_op op
;
1436 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1437 switch (ir
->operation
) {
1438 case ir_unop_interpolate_at_centroid
:
1439 op
= nir_intrinsic_interp_var_at_centroid
;
1441 case ir_binop_interpolate_at_offset
:
1442 op
= nir_intrinsic_interp_var_at_offset
;
1444 case ir_binop_interpolate_at_sample
:
1445 op
= nir_intrinsic_interp_var_at_sample
;
1448 unreachable("Invalid interpolation intrinsic");
1451 /* This case can happen if the vertex shader does not write the
1452 * given varying. In this case, the linker will lower it to a
1453 * global variable. Since interpolating a variable makes no
1454 * sense, we'll just turn it into a load which will probably
1455 * eventually end up as an SSA definition.
1457 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1458 op
= nir_intrinsic_load_var
;
1461 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1462 intrin
->num_components
= deref
->type
->vector_elements
;
1463 intrin
->variables
[0] = this->deref_head
;
1464 ralloc_steal(intrin
, intrin
->variables
[0]);
1466 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1467 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1468 intrin
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1470 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1471 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1474 unsigned swiz
[4] = {
1475 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1478 result
= nir_swizzle(&b
, result
, swiz
,
1479 swizzle
->type
->vector_elements
, false);
1489 nir_ssa_def
*srcs
[4];
1490 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1491 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1493 glsl_base_type types
[4];
1494 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1496 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1498 types
[i
] = GLSL_TYPE_FLOAT
;
1500 glsl_base_type out_type
;
1502 out_type
= ir
->type
->base_type
;
1504 out_type
= GLSL_TYPE_FLOAT
;
1506 switch (ir
->operation
) {
1507 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1508 case ir_unop_logic_not
:
1509 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1512 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1513 : nir_ineg(&b
, srcs
[0]);
1516 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1517 : nir_iabs(&b
, srcs
[0]);
1519 case ir_unop_saturate
:
1520 assert(type_is_float(types
[0]));
1521 result
= nir_fsat(&b
, srcs
[0]);
1524 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1525 : nir_isign(&b
, srcs
[0]);
1527 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1528 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1529 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1530 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1531 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1532 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1533 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1535 result
= supports_ints
? nir_i2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1538 result
= supports_ints
? nir_u2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1541 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1575 case ir_unop_i642u64
:
1576 case ir_unop_u642i64
: {
1577 nir_alu_type src_type
= nir_get_nir_type_for_glsl_base_type(types
[0]);
1578 nir_alu_type dst_type
= nir_get_nir_type_for_glsl_base_type(out_type
);
1579 result
= nir_build_alu(&b
, nir_type_conversion_op(src_type
, dst_type
),
1580 srcs
[0], NULL
, NULL
, NULL
);
1581 /* b2i and b2f don't have fixed bit-size versions so the builder will
1582 * just assume 32 and we have to fix it up here.
1584 result
->bit_size
= nir_alu_type_get_type_size(dst_type
);
1588 case ir_unop_bitcast_i2f
:
1589 case ir_unop_bitcast_f2i
:
1590 case ir_unop_bitcast_u2f
:
1591 case ir_unop_bitcast_f2u
:
1592 case ir_unop_bitcast_i642d
:
1593 case ir_unop_bitcast_d2i64
:
1594 case ir_unop_bitcast_u642d
:
1595 case ir_unop_bitcast_d2u64
:
1596 case ir_unop_subroutine_to_int
:
1598 result
= nir_imov(&b
, srcs
[0]);
1600 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1601 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1602 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1603 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1604 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1605 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1606 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1607 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1608 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1609 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1610 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1611 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1612 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1613 case ir_unop_pack_snorm_2x16
:
1614 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1616 case ir_unop_pack_snorm_4x8
:
1617 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1619 case ir_unop_pack_unorm_2x16
:
1620 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1622 case ir_unop_pack_unorm_4x8
:
1623 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1625 case ir_unop_pack_half_2x16
:
1626 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1628 case ir_unop_unpack_snorm_2x16
:
1629 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1631 case ir_unop_unpack_snorm_4x8
:
1632 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1634 case ir_unop_unpack_unorm_2x16
:
1635 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1637 case ir_unop_unpack_unorm_4x8
:
1638 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1640 case ir_unop_unpack_half_2x16
:
1641 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1643 case ir_unop_pack_double_2x32
:
1644 case ir_unop_pack_int_2x32
:
1645 case ir_unop_pack_uint_2x32
:
1646 result
= nir_pack_64_2x32(&b
, srcs
[0]);
1648 case ir_unop_unpack_double_2x32
:
1649 case ir_unop_unpack_int_2x32
:
1650 case ir_unop_unpack_uint_2x32
:
1651 result
= nir_unpack_64_2x32(&b
, srcs
[0]);
1653 case ir_unop_bitfield_reverse
:
1654 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1656 case ir_unop_bit_count
:
1657 result
= nir_bit_count(&b
, srcs
[0]);
1659 case ir_unop_find_msb
:
1661 case GLSL_TYPE_UINT
:
1662 result
= nir_ufind_msb(&b
, srcs
[0]);
1665 result
= nir_ifind_msb(&b
, srcs
[0]);
1668 unreachable("Invalid type for findMSB()");
1671 case ir_unop_find_lsb
:
1672 result
= nir_find_lsb(&b
, srcs
[0]);
1676 switch (ir
->type
->vector_elements
) {
1678 switch (ir
->operands
[0]->type
->vector_elements
) {
1679 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1680 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1681 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1682 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1683 default: unreachable("not reached");
1687 switch (ir
->operands
[0]->type
->vector_elements
) {
1688 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1689 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1690 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1691 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1692 default: unreachable("not reached");
1696 switch (ir
->operands
[0]->type
->vector_elements
) {
1697 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1698 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1699 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1700 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1701 default: unreachable("not reached");
1705 switch (ir
->operands
[0]->type
->vector_elements
) {
1706 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1707 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1708 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1709 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1710 default: unreachable("not reached");
1714 unreachable("not reached");
1717 case ir_unop_get_buffer_size
: {
1718 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1720 nir_intrinsic_get_buffer_size
);
1721 load
->num_components
= ir
->type
->vector_elements
;
1722 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1723 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1724 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1729 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1730 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1733 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1734 : nir_isub(&b
, srcs
[0], srcs
[1]);
1737 result
= type_is_float(out_type
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1738 : nir_imul(&b
, srcs
[0], srcs
[1]);
1741 if (type_is_float(out_type
))
1742 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1743 else if (type_is_signed(out_type
))
1744 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1746 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1749 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1750 : nir_umod(&b
, srcs
[0], srcs
[1]);
1753 if (type_is_float(out_type
))
1754 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1755 else if (type_is_signed(out_type
))
1756 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1758 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1761 if (type_is_float(out_type
))
1762 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1763 else if (type_is_signed(out_type
))
1764 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1766 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1768 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1769 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1770 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1771 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1772 case ir_binop_logic_and
:
1773 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1774 : nir_fand(&b
, srcs
[0], srcs
[1]);
1776 case ir_binop_logic_or
:
1777 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1778 : nir_for(&b
, srcs
[0], srcs
[1]);
1780 case ir_binop_logic_xor
:
1781 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1782 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1784 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1785 case ir_binop_rshift
:
1786 result
= (type_is_signed(out_type
)) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1787 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1789 case ir_binop_imul_high
:
1790 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1791 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1793 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1794 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1796 if (supports_ints
) {
1797 if (type_is_float(types
[0]))
1798 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1799 else if (type_is_signed(types
[0]))
1800 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1802 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1804 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1807 case ir_binop_greater
:
1808 if (supports_ints
) {
1809 if (type_is_float(types
[0]))
1810 result
= nir_flt(&b
, srcs
[1], srcs
[0]);
1811 else if (type_is_signed(types
[0]))
1812 result
= nir_ilt(&b
, srcs
[1], srcs
[0]);
1814 result
= nir_ult(&b
, srcs
[1], srcs
[0]);
1816 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1819 case ir_binop_lequal
:
1820 if (supports_ints
) {
1821 if (type_is_float(types
[0]))
1822 result
= nir_fge(&b
, srcs
[1], srcs
[0]);
1823 else if (type_is_signed(types
[0]))
1824 result
= nir_ige(&b
, srcs
[1], srcs
[0]);
1826 result
= nir_uge(&b
, srcs
[1], srcs
[0]);
1828 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1831 case ir_binop_gequal
:
1832 if (supports_ints
) {
1833 if (type_is_float(types
[0]))
1834 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1835 else if (type_is_signed(types
[0]))
1836 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1838 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1840 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1843 case ir_binop_equal
:
1844 if (supports_ints
) {
1845 if (type_is_float(types
[0]))
1846 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1848 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1850 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1853 case ir_binop_nequal
:
1854 if (supports_ints
) {
1855 if (type_is_float(types
[0]))
1856 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1858 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1860 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1863 case ir_binop_all_equal
:
1864 if (supports_ints
) {
1865 if (type_is_float(types
[0])) {
1866 switch (ir
->operands
[0]->type
->vector_elements
) {
1867 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1868 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1869 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1870 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1872 unreachable("not reached");
1875 switch (ir
->operands
[0]->type
->vector_elements
) {
1876 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1877 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1878 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1879 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1881 unreachable("not reached");
1885 switch (ir
->operands
[0]->type
->vector_elements
) {
1886 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1887 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1888 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1889 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1891 unreachable("not reached");
1895 case ir_binop_any_nequal
:
1896 if (supports_ints
) {
1897 if (type_is_float(types
[0])) {
1898 switch (ir
->operands
[0]->type
->vector_elements
) {
1899 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1900 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1901 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1902 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1904 unreachable("not reached");
1907 switch (ir
->operands
[0]->type
->vector_elements
) {
1908 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1909 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1910 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1911 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1913 unreachable("not reached");
1917 switch (ir
->operands
[0]->type
->vector_elements
) {
1918 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1919 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1920 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1921 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1923 unreachable("not reached");
1928 switch (ir
->operands
[0]->type
->vector_elements
) {
1929 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1930 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1931 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1933 unreachable("not reached");
1937 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1939 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1942 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1946 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1948 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1950 case ir_triop_bitfield_extract
:
1951 result
= (out_type
== GLSL_TYPE_INT
) ?
1952 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1953 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1955 case ir_quadop_bitfield_insert
:
1956 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1958 case ir_quadop_vector
:
1959 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1963 unreachable("not reached");
1968 nir_visitor::visit(ir_swizzle
*ir
)
1970 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1971 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1972 ir
->type
->vector_elements
, !supports_ints
);
1976 nir_visitor::visit(ir_texture
*ir
)
1983 num_srcs
= 1; /* coordinate */
1988 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1989 num_srcs
= 2; /* coordinate, bias/lod */
1993 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1999 if (ir
->lod_info
.lod
!= NULL
)
2000 num_srcs
= 2; /* coordinate, lod */
2002 num_srcs
= 1; /* coordinate */
2006 op
= nir_texop_txf_ms
;
2007 num_srcs
= 2; /* coordinate, sample_index */
2012 if (ir
->lod_info
.lod
!= NULL
)
2013 num_srcs
= 1; /* lod */
2020 num_srcs
= 1; /* coordinate */
2025 num_srcs
= 1; /* coordinate */
2028 case ir_query_levels
:
2029 op
= nir_texop_query_levels
;
2033 case ir_texture_samples
:
2034 op
= nir_texop_texture_samples
;
2038 case ir_samples_identical
:
2039 op
= nir_texop_samples_identical
;
2040 num_srcs
= 1; /* coordinate */
2044 unreachable("not reached");
2047 if (ir
->projector
!= NULL
)
2049 if (ir
->shadow_comparator
!= NULL
)
2051 if (ir
->offset
!= NULL
)
2054 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
2057 instr
->sampler_dim
=
2058 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
2059 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
2060 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
2061 if (instr
->is_shadow
)
2062 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
2063 switch (ir
->type
->base_type
) {
2064 case GLSL_TYPE_FLOAT
:
2065 instr
->dest_type
= nir_type_float
;
2068 instr
->dest_type
= nir_type_int
;
2070 case GLSL_TYPE_BOOL
:
2071 case GLSL_TYPE_UINT
:
2072 instr
->dest_type
= nir_type_uint
;
2075 unreachable("not reached");
2078 instr
->texture
= evaluate_deref(&instr
->instr
, ir
->sampler
);
2080 unsigned src_number
= 0;
2082 if (ir
->coordinate
!= NULL
) {
2083 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
2084 instr
->src
[src_number
].src
=
2085 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
2086 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2090 if (ir
->projector
!= NULL
) {
2091 instr
->src
[src_number
].src
=
2092 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
2093 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2097 if (ir
->shadow_comparator
!= NULL
) {
2098 instr
->src
[src_number
].src
=
2099 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparator
));
2100 instr
->src
[src_number
].src_type
= nir_tex_src_comparator
;
2104 if (ir
->offset
!= NULL
) {
2105 /* we don't support multiple offsets yet */
2106 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2108 instr
->src
[src_number
].src
=
2109 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
2110 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2116 instr
->src
[src_number
].src
=
2117 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
2118 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2125 if (ir
->lod_info
.lod
!= NULL
) {
2126 instr
->src
[src_number
].src
=
2127 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
2128 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2134 instr
->src
[src_number
].src
=
2135 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
2136 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2138 instr
->src
[src_number
].src
=
2139 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
2140 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2145 instr
->src
[src_number
].src
=
2146 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
2147 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2152 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2159 assert(src_number
== num_srcs
);
2161 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2162 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2166 nir_visitor::visit(ir_constant
*ir
)
2169 * We don't know if this variable is an array or struct that gets
2170 * dereferenced, so do the safe thing an make it a variable with a
2171 * constant initializer and return a dereference.
2175 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2176 var
->data
.read_only
= true;
2177 var
->constant_initializer
= constant_copy(ir
, var
);
2179 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2180 this->deref_tail
= &this->deref_head
->deref
;
2184 nir_visitor::visit(ir_dereference_variable
*ir
)
2186 struct hash_entry
*entry
=
2187 _mesa_hash_table_search(this->var_table
, ir
->var
);
2189 nir_variable
*var
= (nir_variable
*) entry
->data
;
2191 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2192 this->deref_head
= deref
;
2193 this->deref_tail
= &deref
->deref
;
2197 nir_visitor::visit(ir_dereference_record
*ir
)
2199 ir
->record
->accept(this);
2201 int field_index
= this->deref_tail
->type
->field_index(ir
->field
);
2202 assert(field_index
>= 0);
2204 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2205 deref
->deref
.type
= ir
->type
;
2206 this->deref_tail
->child
= &deref
->deref
;
2207 this->deref_tail
= &deref
->deref
;
2211 nir_visitor::visit(ir_dereference_array
*ir
)
2213 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2214 deref
->deref
.type
= ir
->type
;
2216 ir_constant
*const_index
= ir
->array_index
->as_constant();
2217 if (const_index
!= NULL
) {
2218 deref
->deref_array_type
= nir_deref_array_type_direct
;
2219 deref
->base_offset
= const_index
->value
.u
[0];
2221 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2223 nir_src_for_ssa(evaluate_rvalue(ir
->array_index
));
2226 ir
->array
->accept(this);
2228 this->deref_tail
->child
= &deref
->deref
;
2229 ralloc_steal(this->deref_tail
, deref
);
2230 this->deref_tail
= &deref
->deref
;
2234 nir_visitor::visit(ir_barrier
*)
2236 nir_intrinsic_instr
*instr
=
2237 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2238 nir_builder_instr_insert(&b
, &instr
->instr
);