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
,
134 const nir_shader_compiler_options
*options
)
136 if (options
->vs_inputs_dual_locations
) {
137 nir_foreach_variable(var
, &shader
->inputs
) {
138 var
->data
.location
+=
139 _mesa_bitcount_64(shader
->info
.vs
.double_inputs
&
140 BITFIELD64_MASK(var
->data
.location
));
144 /* Once the remap is done, reset double_inputs_read, so later it will have
145 * which location/slots are doubles */
146 shader
->info
.vs
.double_inputs
= 0;
150 glsl_to_nir(const struct gl_shader_program
*shader_prog
,
151 gl_shader_stage stage
,
152 const nir_shader_compiler_options
*options
)
154 struct gl_linked_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
156 nir_shader
*shader
= nir_shader_create(NULL
, stage
, options
,
159 nir_visitor
v1(shader
);
160 nir_function_visitor
v2(&v1
);
162 visit_exec_list(sh
->ir
, &v1
);
164 nir_lower_constant_initializers(shader
, (nir_variable_mode
)~0);
166 /* Remap the locations to slots so those requiring two slots will occupy
167 * two locations. For instance, if we have in the IR code a dvec3 attr0 in
168 * location 0 and vec4 attr1 in location 1, in NIR attr0 will use
169 * locations/slots 0 and 1, and attr1 will use location/slot 2 */
170 if (shader
->info
.stage
== MESA_SHADER_VERTEX
)
171 nir_remap_attributes(shader
, options
);
173 shader
->info
.name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
174 if (shader_prog
->Label
)
175 shader
->info
.label
= ralloc_strdup(shader
, shader_prog
->Label
);
177 /* Check for transform feedback varyings specified via the API */
178 shader
->info
.has_transform_feedback_varyings
=
179 shader_prog
->TransformFeedback
.NumVarying
> 0;
181 /* Check for transform feedback varyings specified in the Shader */
182 if (shader_prog
->last_vert_prog
)
183 shader
->info
.has_transform_feedback_varyings
|=
184 shader_prog
->last_vert_prog
->sh
.LinkedTransformFeedback
->NumVarying
> 0;
189 nir_visitor::nir_visitor(nir_shader
*shader
)
191 this->supports_ints
= shader
->options
->native_integers
;
192 this->shader
= shader
;
193 this->is_global
= true;
194 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
195 _mesa_key_pointer_equal
);
196 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
197 _mesa_key_pointer_equal
);
201 this->deref_head
= NULL
;
202 this->deref_tail
= NULL
;
203 memset(&this->b
, 0, sizeof(this->b
));
206 nir_visitor::~nir_visitor()
208 _mesa_hash_table_destroy(this->var_table
, NULL
);
209 _mesa_hash_table_destroy(this->overload_table
, NULL
);
213 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
216 ralloc_steal(mem_ctx
, this->deref_head
);
217 return this->deref_head
;
220 static nir_constant
*
221 constant_copy(ir_constant
*ir
, void *mem_ctx
)
226 nir_constant
*ret
= rzalloc(mem_ctx
, nir_constant
);
228 const unsigned rows
= ir
->type
->vector_elements
;
229 const unsigned cols
= ir
->type
->matrix_columns
;
232 ret
->num_elements
= 0;
233 switch (ir
->type
->base_type
) {
235 /* Only float base types can be matrices. */
238 for (unsigned r
= 0; r
< rows
; r
++)
239 ret
->values
[0].u32
[r
] = ir
->value
.u
[r
];
244 /* Only float base types can be matrices. */
247 for (unsigned r
= 0; r
< rows
; r
++)
248 ret
->values
[0].i32
[r
] = ir
->value
.i
[r
];
252 case GLSL_TYPE_FLOAT
:
253 for (unsigned c
= 0; c
< cols
; c
++) {
254 for (unsigned r
= 0; r
< rows
; r
++)
255 ret
->values
[c
].f32
[r
] = ir
->value
.f
[c
* rows
+ r
];
259 case GLSL_TYPE_DOUBLE
:
260 for (unsigned c
= 0; c
< cols
; c
++) {
261 for (unsigned r
= 0; r
< rows
; r
++)
262 ret
->values
[c
].f64
[r
] = ir
->value
.d
[c
* rows
+ r
];
266 case GLSL_TYPE_UINT64
:
267 /* Only float base types can be matrices. */
270 for (unsigned r
= 0; r
< rows
; r
++)
271 ret
->values
[0].u64
[r
] = ir
->value
.u64
[r
];
274 case GLSL_TYPE_INT64
:
275 /* Only float base types can be matrices. */
278 for (unsigned r
= 0; r
< rows
; r
++)
279 ret
->values
[0].i64
[r
] = ir
->value
.i64
[r
];
283 /* Only float base types can be matrices. */
286 for (unsigned r
= 0; r
< rows
; r
++)
287 ret
->values
[0].u32
[r
] = ir
->value
.b
[r
] ? NIR_TRUE
: NIR_FALSE
;
291 case GLSL_TYPE_STRUCT
:
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
->const_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
= rzalloc(shader
, nir_variable
);
319 var
->type
= ir
->type
;
320 var
->name
= ralloc_strdup(var
, ir
->name
);
322 var
->data
.always_active_io
= ir
->data
.always_active_io
;
323 var
->data
.read_only
= ir
->data
.read_only
;
324 var
->data
.centroid
= ir
->data
.centroid
;
325 var
->data
.sample
= ir
->data
.sample
;
326 var
->data
.patch
= ir
->data
.patch
;
327 var
->data
.invariant
= ir
->data
.invariant
;
328 var
->data
.location
= ir
->data
.location
;
329 var
->data
.stream
= ir
->data
.stream
;
330 var
->data
.compact
= false;
332 switch(ir
->data
.mode
) {
334 case ir_var_temporary
:
336 var
->data
.mode
= nir_var_global
;
338 var
->data
.mode
= nir_var_local
;
341 case ir_var_function_in
:
342 case ir_var_function_out
:
343 case ir_var_function_inout
:
344 case ir_var_const_in
:
345 var
->data
.mode
= nir_var_local
;
348 case ir_var_shader_in
:
349 if (shader
->info
.stage
== MESA_SHADER_FRAGMENT
&&
350 ir
->data
.location
== VARYING_SLOT_FACE
) {
351 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
352 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
353 var
->data
.mode
= nir_var_system_value
;
354 } else if (shader
->info
.stage
== MESA_SHADER_GEOMETRY
&&
355 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
356 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
357 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
358 var
->data
.mode
= nir_var_system_value
;
360 var
->data
.mode
= nir_var_shader_in
;
362 if (shader
->info
.stage
== MESA_SHADER_TESS_EVAL
&&
363 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
364 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
365 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
369 /* Mark all the locations that require two slots */
370 if (shader
->info
.stage
== MESA_SHADER_VERTEX
&&
371 glsl_type_is_dual_slot(glsl_without_array(var
->type
))) {
372 for (uint i
= 0; i
< glsl_count_attribute_slots(var
->type
, true); i
++) {
373 uint64_t bitfield
= BITFIELD64_BIT(var
->data
.location
+ i
);
374 shader
->info
.vs
.double_inputs
|= bitfield
;
379 case ir_var_shader_out
:
380 var
->data
.mode
= nir_var_shader_out
;
381 if (shader
->info
.stage
== MESA_SHADER_TESS_CTRL
&&
382 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
383 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
384 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
389 var
->data
.mode
= nir_var_uniform
;
392 case ir_var_shader_storage
:
393 var
->data
.mode
= nir_var_shader_storage
;
396 case ir_var_system_value
:
397 var
->data
.mode
= nir_var_system_value
;
401 unreachable("not reached");
404 var
->data
.interpolation
= ir
->data
.interpolation
;
405 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
406 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
407 var
->data
.location_frac
= ir
->data
.location_frac
;
409 if (var
->data
.pixel_center_integer
) {
410 assert(shader
->info
.stage
== MESA_SHADER_FRAGMENT
);
411 shader
->info
.fs
.pixel_center_integer
= true;
414 switch (ir
->data
.depth_layout
) {
415 case ir_depth_layout_none
:
416 var
->data
.depth_layout
= nir_depth_layout_none
;
418 case ir_depth_layout_any
:
419 var
->data
.depth_layout
= nir_depth_layout_any
;
421 case ir_depth_layout_greater
:
422 var
->data
.depth_layout
= nir_depth_layout_greater
;
424 case ir_depth_layout_less
:
425 var
->data
.depth_layout
= nir_depth_layout_less
;
427 case ir_depth_layout_unchanged
:
428 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
431 unreachable("not reached");
434 var
->data
.index
= ir
->data
.index
;
435 var
->data
.descriptor_set
= 0;
436 var
->data
.binding
= ir
->data
.binding
;
437 var
->data
.bindless
= ir
->data
.bindless
;
438 var
->data
.offset
= ir
->data
.offset
;
439 var
->data
.image
.read_only
= ir
->data
.memory_read_only
;
440 var
->data
.image
.write_only
= ir
->data
.memory_write_only
;
441 var
->data
.image
.coherent
= ir
->data
.memory_coherent
;
442 var
->data
.image
._volatile
= ir
->data
.memory_volatile
;
443 var
->data
.image
.restrict_flag
= ir
->data
.memory_restrict
;
444 var
->data
.image
.format
= ir
->data
.image_format
;
445 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
447 var
->num_state_slots
= ir
->get_num_state_slots();
448 if (var
->num_state_slots
> 0) {
449 var
->state_slots
= rzalloc_array(var
, nir_state_slot
,
450 var
->num_state_slots
);
452 ir_state_slot
*state_slots
= ir
->get_state_slots();
453 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
454 for (unsigned j
= 0; j
< 5; j
++)
455 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
456 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
459 var
->state_slots
= NULL
;
462 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
464 var
->interface_type
= ir
->get_interface_type();
466 if (var
->data
.mode
== nir_var_local
)
467 nir_function_impl_add_variable(impl
, var
);
469 nir_shader_add_variable(shader
, var
);
471 _mesa_hash_table_insert(var_table
, ir
, var
);
476 nir_function_visitor::visit_enter(ir_function
*ir
)
478 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
479 visitor
->create_function(sig
);
481 return visit_continue_with_parent
;
485 nir_visitor::create_function(ir_function_signature
*ir
)
487 if (ir
->is_intrinsic())
490 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
492 assert(ir
->parameters
.is_empty());
493 assert(ir
->return_type
== glsl_type::void_type
);
495 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
499 nir_visitor::visit(ir_function
*ir
)
501 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
506 nir_visitor::visit(ir_function_signature
*ir
)
508 if (ir
->is_intrinsic())
511 struct hash_entry
*entry
=
512 _mesa_hash_table_search(this->overload_table
, ir
);
515 nir_function
*func
= (nir_function
*) entry
->data
;
517 if (ir
->is_defined
) {
518 nir_function_impl
*impl
= nir_function_impl_create(func
);
521 assert(strcmp(func
->name
, "main") == 0);
522 assert(ir
->parameters
.is_empty());
523 assert(func
->return_type
== glsl_type::void_type
);
525 this->is_global
= false;
527 nir_builder_init(&b
, impl
);
528 b
.cursor
= nir_after_cf_list(&impl
->body
);
529 visit_exec_list(&ir
->body
, this);
531 this->is_global
= true;
538 nir_visitor::visit(ir_loop
*ir
)
541 visit_exec_list(&ir
->body_instructions
, this);
542 nir_pop_loop(&b
, NULL
);
546 nir_visitor::visit(ir_if
*ir
)
548 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
549 visit_exec_list(&ir
->then_instructions
, this);
550 nir_push_else(&b
, NULL
);
551 visit_exec_list(&ir
->else_instructions
, this);
552 nir_pop_if(&b
, NULL
);
556 nir_visitor::visit(ir_discard
*ir
)
559 * discards aren't treated as control flow, because before we lower them
560 * they can appear anywhere in the shader and the stuff after them may still
561 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
562 * discards will be immediately followed by a return.
565 nir_intrinsic_instr
*discard
;
567 discard
= nir_intrinsic_instr_create(this->shader
,
568 nir_intrinsic_discard_if
);
570 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
572 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
575 nir_builder_instr_insert(&b
, &discard
->instr
);
579 nir_visitor::visit(ir_emit_vertex
*ir
)
581 nir_intrinsic_instr
*instr
=
582 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
583 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
584 nir_builder_instr_insert(&b
, &instr
->instr
);
588 nir_visitor::visit(ir_end_primitive
*ir
)
590 nir_intrinsic_instr
*instr
=
591 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
592 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
593 nir_builder_instr_insert(&b
, &instr
->instr
);
597 nir_visitor::visit(ir_loop_jump
*ir
)
601 case ir_loop_jump::jump_break
:
602 type
= nir_jump_break
;
604 case ir_loop_jump::jump_continue
:
605 type
= nir_jump_continue
;
608 unreachable("not reached");
611 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
612 nir_builder_instr_insert(&b
, &instr
->instr
);
616 nir_visitor::visit(ir_return
*ir
)
618 if (ir
->value
!= NULL
) {
619 nir_intrinsic_instr
*copy
=
620 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
622 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
623 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
626 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
627 nir_builder_instr_insert(&b
, &instr
->instr
);
631 nir_visitor::visit(ir_call
*ir
)
633 if (ir
->callee
->is_intrinsic()) {
636 switch (ir
->callee
->intrinsic_id
) {
637 case ir_intrinsic_atomic_counter_read
:
638 op
= nir_intrinsic_atomic_counter_read_var
;
640 case ir_intrinsic_atomic_counter_increment
:
641 op
= nir_intrinsic_atomic_counter_inc_var
;
643 case ir_intrinsic_atomic_counter_predecrement
:
644 op
= nir_intrinsic_atomic_counter_dec_var
;
646 case ir_intrinsic_atomic_counter_add
:
647 op
= nir_intrinsic_atomic_counter_add_var
;
649 case ir_intrinsic_atomic_counter_and
:
650 op
= nir_intrinsic_atomic_counter_and_var
;
652 case ir_intrinsic_atomic_counter_or
:
653 op
= nir_intrinsic_atomic_counter_or_var
;
655 case ir_intrinsic_atomic_counter_xor
:
656 op
= nir_intrinsic_atomic_counter_xor_var
;
658 case ir_intrinsic_atomic_counter_min
:
659 op
= nir_intrinsic_atomic_counter_min_var
;
661 case ir_intrinsic_atomic_counter_max
:
662 op
= nir_intrinsic_atomic_counter_max_var
;
664 case ir_intrinsic_atomic_counter_exchange
:
665 op
= nir_intrinsic_atomic_counter_exchange_var
;
667 case ir_intrinsic_atomic_counter_comp_swap
:
668 op
= nir_intrinsic_atomic_counter_comp_swap_var
;
670 case ir_intrinsic_image_load
:
671 op
= nir_intrinsic_image_var_load
;
673 case ir_intrinsic_image_store
:
674 op
= nir_intrinsic_image_var_store
;
676 case ir_intrinsic_image_atomic_add
:
677 op
= nir_intrinsic_image_var_atomic_add
;
679 case ir_intrinsic_image_atomic_min
:
680 op
= nir_intrinsic_image_var_atomic_min
;
682 case ir_intrinsic_image_atomic_max
:
683 op
= nir_intrinsic_image_var_atomic_max
;
685 case ir_intrinsic_image_atomic_and
:
686 op
= nir_intrinsic_image_var_atomic_and
;
688 case ir_intrinsic_image_atomic_or
:
689 op
= nir_intrinsic_image_var_atomic_or
;
691 case ir_intrinsic_image_atomic_xor
:
692 op
= nir_intrinsic_image_var_atomic_xor
;
694 case ir_intrinsic_image_atomic_exchange
:
695 op
= nir_intrinsic_image_var_atomic_exchange
;
697 case ir_intrinsic_image_atomic_comp_swap
:
698 op
= nir_intrinsic_image_var_atomic_comp_swap
;
700 case ir_intrinsic_memory_barrier
:
701 op
= nir_intrinsic_memory_barrier
;
703 case ir_intrinsic_image_size
:
704 op
= nir_intrinsic_image_var_size
;
706 case ir_intrinsic_image_samples
:
707 op
= nir_intrinsic_image_var_samples
;
709 case ir_intrinsic_ssbo_store
:
710 op
= nir_intrinsic_store_ssbo
;
712 case ir_intrinsic_ssbo_load
:
713 op
= nir_intrinsic_load_ssbo
;
715 case ir_intrinsic_ssbo_atomic_add
:
716 op
= nir_intrinsic_ssbo_atomic_add
;
718 case ir_intrinsic_ssbo_atomic_and
:
719 op
= nir_intrinsic_ssbo_atomic_and
;
721 case ir_intrinsic_ssbo_atomic_or
:
722 op
= nir_intrinsic_ssbo_atomic_or
;
724 case ir_intrinsic_ssbo_atomic_xor
:
725 op
= nir_intrinsic_ssbo_atomic_xor
;
727 case ir_intrinsic_ssbo_atomic_min
:
728 assert(ir
->return_deref
);
729 if (ir
->return_deref
->type
== glsl_type::int_type
)
730 op
= nir_intrinsic_ssbo_atomic_imin
;
731 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
732 op
= nir_intrinsic_ssbo_atomic_umin
;
734 unreachable("Invalid type");
736 case ir_intrinsic_ssbo_atomic_max
:
737 assert(ir
->return_deref
);
738 if (ir
->return_deref
->type
== glsl_type::int_type
)
739 op
= nir_intrinsic_ssbo_atomic_imax
;
740 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
741 op
= nir_intrinsic_ssbo_atomic_umax
;
743 unreachable("Invalid type");
745 case ir_intrinsic_ssbo_atomic_exchange
:
746 op
= nir_intrinsic_ssbo_atomic_exchange
;
748 case ir_intrinsic_ssbo_atomic_comp_swap
:
749 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
751 case ir_intrinsic_shader_clock
:
752 op
= nir_intrinsic_shader_clock
;
754 case ir_intrinsic_group_memory_barrier
:
755 op
= nir_intrinsic_group_memory_barrier
;
757 case ir_intrinsic_memory_barrier_atomic_counter
:
758 op
= nir_intrinsic_memory_barrier_atomic_counter
;
760 case ir_intrinsic_memory_barrier_buffer
:
761 op
= nir_intrinsic_memory_barrier_buffer
;
763 case ir_intrinsic_memory_barrier_image
:
764 op
= nir_intrinsic_memory_barrier_image
;
766 case ir_intrinsic_memory_barrier_shared
:
767 op
= nir_intrinsic_memory_barrier_shared
;
769 case ir_intrinsic_shared_load
:
770 op
= nir_intrinsic_load_shared
;
772 case ir_intrinsic_shared_store
:
773 op
= nir_intrinsic_store_shared
;
775 case ir_intrinsic_shared_atomic_add
:
776 op
= nir_intrinsic_shared_atomic_add
;
778 case ir_intrinsic_shared_atomic_and
:
779 op
= nir_intrinsic_shared_atomic_and
;
781 case ir_intrinsic_shared_atomic_or
:
782 op
= nir_intrinsic_shared_atomic_or
;
784 case ir_intrinsic_shared_atomic_xor
:
785 op
= nir_intrinsic_shared_atomic_xor
;
787 case ir_intrinsic_shared_atomic_min
:
788 assert(ir
->return_deref
);
789 if (ir
->return_deref
->type
== glsl_type::int_type
)
790 op
= nir_intrinsic_shared_atomic_imin
;
791 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
792 op
= nir_intrinsic_shared_atomic_umin
;
794 unreachable("Invalid type");
796 case ir_intrinsic_shared_atomic_max
:
797 assert(ir
->return_deref
);
798 if (ir
->return_deref
->type
== glsl_type::int_type
)
799 op
= nir_intrinsic_shared_atomic_imax
;
800 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
801 op
= nir_intrinsic_shared_atomic_umax
;
803 unreachable("Invalid type");
805 case ir_intrinsic_shared_atomic_exchange
:
806 op
= nir_intrinsic_shared_atomic_exchange
;
808 case ir_intrinsic_shared_atomic_comp_swap
:
809 op
= nir_intrinsic_shared_atomic_comp_swap
;
811 case ir_intrinsic_vote_any
:
812 op
= nir_intrinsic_vote_any
;
814 case ir_intrinsic_vote_all
:
815 op
= nir_intrinsic_vote_all
;
817 case ir_intrinsic_vote_eq
:
818 op
= nir_intrinsic_vote_ieq
;
820 case ir_intrinsic_ballot
:
821 op
= nir_intrinsic_ballot
;
823 case ir_intrinsic_read_invocation
:
824 op
= nir_intrinsic_read_invocation
;
826 case ir_intrinsic_read_first_invocation
:
827 op
= nir_intrinsic_read_first_invocation
;
830 unreachable("not reached");
833 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
834 nir_dest
*dest
= &instr
->dest
;
837 case nir_intrinsic_atomic_counter_read_var
:
838 case nir_intrinsic_atomic_counter_inc_var
:
839 case nir_intrinsic_atomic_counter_dec_var
:
840 case nir_intrinsic_atomic_counter_add_var
:
841 case nir_intrinsic_atomic_counter_min_var
:
842 case nir_intrinsic_atomic_counter_max_var
:
843 case nir_intrinsic_atomic_counter_and_var
:
844 case nir_intrinsic_atomic_counter_or_var
:
845 case nir_intrinsic_atomic_counter_xor_var
:
846 case nir_intrinsic_atomic_counter_exchange_var
:
847 case nir_intrinsic_atomic_counter_comp_swap_var
: {
848 /* Set the counter variable dereference. */
849 exec_node
*param
= ir
->actual_parameters
.get_head();
850 ir_dereference
*counter
= (ir_dereference
*)param
;
852 instr
->variables
[0] = evaluate_deref(&instr
->instr
, counter
);
853 param
= param
->get_next();
855 /* Set the intrinsic destination. */
856 if (ir
->return_deref
) {
857 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
860 /* Set the intrinsic parameters. */
861 if (!param
->is_tail_sentinel()) {
863 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
864 param
= param
->get_next();
867 if (!param
->is_tail_sentinel()) {
869 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
870 param
= param
->get_next();
873 nir_builder_instr_insert(&b
, &instr
->instr
);
876 case nir_intrinsic_image_var_load
:
877 case nir_intrinsic_image_var_store
:
878 case nir_intrinsic_image_var_atomic_add
:
879 case nir_intrinsic_image_var_atomic_min
:
880 case nir_intrinsic_image_var_atomic_max
:
881 case nir_intrinsic_image_var_atomic_and
:
882 case nir_intrinsic_image_var_atomic_or
:
883 case nir_intrinsic_image_var_atomic_xor
:
884 case nir_intrinsic_image_var_atomic_exchange
:
885 case nir_intrinsic_image_var_atomic_comp_swap
:
886 case nir_intrinsic_image_var_samples
:
887 case nir_intrinsic_image_var_size
: {
888 nir_ssa_undef_instr
*instr_undef
=
889 nir_ssa_undef_instr_create(shader
, 1, 32);
890 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
892 /* Set the image variable dereference. */
893 exec_node
*param
= ir
->actual_parameters
.get_head();
894 ir_dereference
*image
= (ir_dereference
*)param
;
895 const glsl_type
*type
=
896 image
->variable_referenced()->type
->without_array();
898 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
899 param
= param
->get_next();
901 /* Set the intrinsic destination. */
902 if (ir
->return_deref
) {
903 unsigned num_components
= ir
->return_deref
->type
->vector_elements
;
904 if (instr
->intrinsic
== nir_intrinsic_image_var_size
)
905 instr
->num_components
= num_components
;
906 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
907 num_components
, 32, NULL
);
910 if (op
== nir_intrinsic_image_var_size
||
911 op
== nir_intrinsic_image_var_samples
) {
912 nir_builder_instr_insert(&b
, &instr
->instr
);
916 /* Set the address argument, extending the coordinate vector to four
919 nir_ssa_def
*src_addr
=
920 evaluate_rvalue((ir_dereference
*)param
);
921 nir_ssa_def
*srcs
[4];
923 for (int i
= 0; i
< 4; i
++) {
924 if (i
< type
->coordinate_components())
925 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
927 srcs
[i
] = &instr_undef
->def
;
930 instr
->src
[0] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
931 param
= param
->get_next();
933 /* Set the sample argument, which is undefined for single-sample
936 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
938 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
939 param
= param
->get_next();
941 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
944 /* Set the intrinsic parameters. */
945 if (!param
->is_tail_sentinel()) {
947 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
948 param
= param
->get_next();
951 if (!param
->is_tail_sentinel()) {
953 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
954 param
= param
->get_next();
956 nir_builder_instr_insert(&b
, &instr
->instr
);
959 case nir_intrinsic_memory_barrier
:
960 case nir_intrinsic_group_memory_barrier
:
961 case nir_intrinsic_memory_barrier_atomic_counter
:
962 case nir_intrinsic_memory_barrier_buffer
:
963 case nir_intrinsic_memory_barrier_image
:
964 case nir_intrinsic_memory_barrier_shared
:
965 nir_builder_instr_insert(&b
, &instr
->instr
);
967 case nir_intrinsic_shader_clock
:
968 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 2, 32, NULL
);
969 instr
->num_components
= 2;
970 nir_builder_instr_insert(&b
, &instr
->instr
);
972 case nir_intrinsic_store_ssbo
: {
973 exec_node
*param
= ir
->actual_parameters
.get_head();
974 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
976 param
= param
->get_next();
977 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
979 param
= param
->get_next();
980 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
982 param
= param
->get_next();
983 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
986 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
987 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
988 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
989 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
990 instr
->num_components
= val
->type
->vector_elements
;
992 nir_builder_instr_insert(&b
, &instr
->instr
);
995 case nir_intrinsic_load_ssbo
: {
996 exec_node
*param
= ir
->actual_parameters
.get_head();
997 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
999 param
= param
->get_next();
1000 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1002 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
1003 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1005 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1006 instr
->num_components
= type
->vector_elements
;
1008 /* Setup destination register */
1009 unsigned bit_size
= glsl_get_bit_size(type
);
1010 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1011 type
->vector_elements
, bit_size
, NULL
);
1013 /* Insert the created nir instruction now since in the case of boolean
1014 * result we will need to emit another instruction after it
1016 nir_builder_instr_insert(&b
, &instr
->instr
);
1019 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
1020 * consider a true boolean to be ~0. Fix this up with a != 0
1023 if (type
->is_boolean()) {
1024 nir_alu_instr
*load_ssbo_compare
=
1025 nir_alu_instr_create(shader
, nir_op_ine
);
1026 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
1027 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
1028 load_ssbo_compare
->src
[1].src
=
1029 nir_src_for_ssa(nir_imm_int(&b
, 0));
1030 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
1031 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
1032 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
1033 &load_ssbo_compare
->dest
.dest
,
1034 type
->vector_elements
, bit_size
, NULL
);
1035 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
1036 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
1037 dest
= &load_ssbo_compare
->dest
.dest
;
1041 case nir_intrinsic_ssbo_atomic_add
:
1042 case nir_intrinsic_ssbo_atomic_imin
:
1043 case nir_intrinsic_ssbo_atomic_umin
:
1044 case nir_intrinsic_ssbo_atomic_imax
:
1045 case nir_intrinsic_ssbo_atomic_umax
:
1046 case nir_intrinsic_ssbo_atomic_and
:
1047 case nir_intrinsic_ssbo_atomic_or
:
1048 case nir_intrinsic_ssbo_atomic_xor
:
1049 case nir_intrinsic_ssbo_atomic_exchange
:
1050 case nir_intrinsic_ssbo_atomic_comp_swap
: {
1051 int param_count
= ir
->actual_parameters
.length();
1052 assert(param_count
== 3 || param_count
== 4);
1055 exec_node
*param
= ir
->actual_parameters
.get_head();
1056 ir_instruction
*inst
= (ir_instruction
*) param
;
1057 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1060 param
= param
->get_next();
1061 inst
= (ir_instruction
*) param
;
1062 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1064 /* data1 parameter (this is always present) */
1065 param
= param
->get_next();
1066 inst
= (ir_instruction
*) param
;
1067 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1069 /* data2 parameter (only with atomic_comp_swap) */
1070 if (param_count
== 4) {
1071 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
1072 param
= param
->get_next();
1073 inst
= (ir_instruction
*) param
;
1074 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1078 assert(ir
->return_deref
);
1079 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1080 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1081 nir_builder_instr_insert(&b
, &instr
->instr
);
1084 case nir_intrinsic_load_shared
: {
1085 exec_node
*param
= ir
->actual_parameters
.get_head();
1086 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1088 nir_intrinsic_set_base(instr
, 0);
1089 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1091 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1092 instr
->num_components
= type
->vector_elements
;
1094 /* Setup destination register */
1095 unsigned bit_size
= glsl_get_bit_size(type
);
1096 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1097 type
->vector_elements
, bit_size
, NULL
);
1099 nir_builder_instr_insert(&b
, &instr
->instr
);
1102 case nir_intrinsic_store_shared
: {
1103 exec_node
*param
= ir
->actual_parameters
.get_head();
1104 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1106 param
= param
->get_next();
1107 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1109 param
= param
->get_next();
1110 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1113 nir_intrinsic_set_base(instr
, 0);
1114 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1116 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1118 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1119 instr
->num_components
= val
->type
->vector_elements
;
1121 nir_builder_instr_insert(&b
, &instr
->instr
);
1124 case nir_intrinsic_shared_atomic_add
:
1125 case nir_intrinsic_shared_atomic_imin
:
1126 case nir_intrinsic_shared_atomic_umin
:
1127 case nir_intrinsic_shared_atomic_imax
:
1128 case nir_intrinsic_shared_atomic_umax
:
1129 case nir_intrinsic_shared_atomic_and
:
1130 case nir_intrinsic_shared_atomic_or
:
1131 case nir_intrinsic_shared_atomic_xor
:
1132 case nir_intrinsic_shared_atomic_exchange
:
1133 case nir_intrinsic_shared_atomic_comp_swap
: {
1134 int param_count
= ir
->actual_parameters
.length();
1135 assert(param_count
== 2 || param_count
== 3);
1138 exec_node
*param
= ir
->actual_parameters
.get_head();
1139 ir_instruction
*inst
= (ir_instruction
*) param
;
1140 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1142 /* data1 parameter (this is always present) */
1143 param
= param
->get_next();
1144 inst
= (ir_instruction
*) param
;
1145 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1147 /* data2 parameter (only with atomic_comp_swap) */
1148 if (param_count
== 3) {
1149 assert(op
== nir_intrinsic_shared_atomic_comp_swap
);
1150 param
= param
->get_next();
1151 inst
= (ir_instruction
*) param
;
1153 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1157 assert(ir
->return_deref
);
1158 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1159 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1160 ir
->return_deref
->type
->vector_elements
,
1162 nir_builder_instr_insert(&b
, &instr
->instr
);
1165 case nir_intrinsic_vote_any
:
1166 case nir_intrinsic_vote_all
:
1167 case nir_intrinsic_vote_ieq
: {
1168 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
1169 instr
->num_components
= 1;
1171 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1172 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1174 nir_builder_instr_insert(&b
, &instr
->instr
);
1178 case nir_intrinsic_ballot
: {
1179 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1180 ir
->return_deref
->type
->vector_elements
, 64, NULL
);
1181 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1183 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1184 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1186 nir_builder_instr_insert(&b
, &instr
->instr
);
1189 case nir_intrinsic_read_invocation
: {
1190 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1191 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1192 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1194 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1195 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1197 ir_rvalue
*invocation
= (ir_rvalue
*) ir
->actual_parameters
.get_head()->next
;
1198 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(invocation
));
1200 nir_builder_instr_insert(&b
, &instr
->instr
);
1203 case nir_intrinsic_read_first_invocation
: {
1204 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1205 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1206 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1208 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1209 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1211 nir_builder_instr_insert(&b
, &instr
->instr
);
1215 unreachable("not reached");
1218 if (ir
->return_deref
) {
1219 nir_intrinsic_instr
*store_instr
=
1220 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
1221 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1222 nir_intrinsic_set_write_mask(store_instr
,
1223 (1 << store_instr
->num_components
) - 1);
1225 store_instr
->variables
[0] =
1226 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
1227 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
1229 nir_builder_instr_insert(&b
, &store_instr
->instr
);
1235 struct hash_entry
*entry
=
1236 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1238 nir_function
*callee
= (nir_function
*) entry
->data
;
1240 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
1243 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
1244 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
1248 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
1249 nir_builder_instr_insert(&b
, &instr
->instr
);
1253 nir_visitor::visit(ir_assignment
*ir
)
1255 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1257 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1258 ir
->lhs
->variable_referenced()->data
.precise
;
1260 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1261 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1262 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1263 nir_intrinsic_instr
*copy
=
1264 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1266 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1267 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1269 if (ir
->condition
) {
1270 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1271 nir_builder_instr_insert(&b
, ©
->instr
);
1272 nir_pop_if(&b
, NULL
);
1274 nir_builder_instr_insert(&b
, ©
->instr
);
1279 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1281 ir
->lhs
->accept(this);
1282 nir_deref_var
*lhs_deref
= this->deref_head
;
1283 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1285 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1286 /* GLSL IR will give us the input to the write-masked assignment in a
1287 * single packed vector. So, for example, if the writemask is xzw, then
1288 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1292 unsigned component
= 0;
1293 for (unsigned i
= 0; i
< 4; i
++) {
1294 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1296 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1299 nir_intrinsic_instr
*store
=
1300 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1301 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1302 nir_intrinsic_set_write_mask(store
, ir
->write_mask
);
1303 store
->variables
[0] = nir_deref_var_clone(lhs_deref
, store
);
1304 store
->src
[0] = nir_src_for_ssa(src
);
1306 if (ir
->condition
) {
1307 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1308 nir_builder_instr_insert(&b
, &store
->instr
);
1309 nir_pop_if(&b
, NULL
);
1311 nir_builder_instr_insert(&b
, &store
->instr
);
1316 * Given an instruction, returns a pointer to its destination or NULL if there
1317 * is no destination.
1319 * Note that this only handles instructions we generate at this level.
1322 get_instr_dest(nir_instr
*instr
)
1324 nir_alu_instr
*alu_instr
;
1325 nir_intrinsic_instr
*intrinsic_instr
;
1326 nir_tex_instr
*tex_instr
;
1328 switch (instr
->type
) {
1329 case nir_instr_type_alu
:
1330 alu_instr
= nir_instr_as_alu(instr
);
1331 return &alu_instr
->dest
.dest
;
1333 case nir_instr_type_intrinsic
:
1334 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1335 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1336 return &intrinsic_instr
->dest
;
1340 case nir_instr_type_tex
:
1341 tex_instr
= nir_instr_as_tex(instr
);
1342 return &tex_instr
->dest
;
1345 unreachable("not reached");
1352 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1355 nir_dest
*dest
= get_instr_dest(instr
);
1358 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1360 nir_builder_instr_insert(&b
, instr
);
1363 assert(dest
->is_ssa
);
1364 this->result
= &dest
->ssa
;
1369 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1372 if (ir
->as_dereference() || ir
->as_constant()) {
1374 * A dereference is being used on the right hand side, which means we
1375 * must emit a variable load.
1378 nir_intrinsic_instr
*load_instr
=
1379 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1380 load_instr
->num_components
= ir
->type
->vector_elements
;
1381 load_instr
->variables
[0] = this->deref_head
;
1382 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1383 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1384 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
, bit_size
);
1387 return this->result
;
1391 type_is_float(glsl_base_type type
)
1393 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
||
1394 type
== GLSL_TYPE_FLOAT16
;
1398 type_is_signed(glsl_base_type type
)
1400 return type
== GLSL_TYPE_INT
|| type
== GLSL_TYPE_INT64
||
1401 type
== GLSL_TYPE_INT16
;
1405 nir_visitor::visit(ir_expression
*ir
)
1407 /* Some special cases */
1408 switch (ir
->operation
) {
1409 case ir_binop_ubo_load
: {
1410 nir_intrinsic_instr
*load
=
1411 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1412 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1413 load
->num_components
= ir
->type
->vector_elements
;
1414 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1415 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1416 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1419 * In UBO's, a true boolean value is any non-zero value, but we consider
1420 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1423 if (ir
->type
->is_boolean())
1424 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1429 case ir_unop_interpolate_at_centroid
:
1430 case ir_binop_interpolate_at_offset
:
1431 case ir_binop_interpolate_at_sample
: {
1432 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1433 ir_swizzle
*swizzle
= NULL
;
1435 /* the api does not allow a swizzle here, but the varying packing code
1436 * may have pushed one into here.
1438 swizzle
= ir
->operands
[0]->as_swizzle();
1440 deref
= swizzle
->val
->as_dereference();
1444 deref
->accept(this);
1446 nir_intrinsic_op op
;
1447 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1448 switch (ir
->operation
) {
1449 case ir_unop_interpolate_at_centroid
:
1450 op
= nir_intrinsic_interp_var_at_centroid
;
1452 case ir_binop_interpolate_at_offset
:
1453 op
= nir_intrinsic_interp_var_at_offset
;
1455 case ir_binop_interpolate_at_sample
:
1456 op
= nir_intrinsic_interp_var_at_sample
;
1459 unreachable("Invalid interpolation intrinsic");
1462 /* This case can happen if the vertex shader does not write the
1463 * given varying. In this case, the linker will lower it to a
1464 * global variable. Since interpolating a variable makes no
1465 * sense, we'll just turn it into a load which will probably
1466 * eventually end up as an SSA definition.
1468 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1469 op
= nir_intrinsic_load_var
;
1472 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1473 intrin
->num_components
= deref
->type
->vector_elements
;
1474 intrin
->variables
[0] = this->deref_head
;
1475 ralloc_steal(intrin
, intrin
->variables
[0]);
1477 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1478 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1479 intrin
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1481 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1482 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1485 unsigned swiz
[4] = {
1486 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1489 result
= nir_swizzle(&b
, result
, swiz
,
1490 swizzle
->type
->vector_elements
, false);
1500 nir_ssa_def
*srcs
[4];
1501 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1502 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1504 glsl_base_type types
[4];
1505 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1507 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1509 types
[i
] = GLSL_TYPE_FLOAT
;
1511 glsl_base_type out_type
;
1513 out_type
= ir
->type
->base_type
;
1515 out_type
= GLSL_TYPE_FLOAT
;
1517 switch (ir
->operation
) {
1518 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1519 case ir_unop_logic_not
:
1520 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1523 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1524 : nir_ineg(&b
, srcs
[0]);
1527 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1528 : nir_iabs(&b
, srcs
[0]);
1530 case ir_unop_saturate
:
1531 assert(type_is_float(types
[0]));
1532 result
= nir_fsat(&b
, srcs
[0]);
1535 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1536 : nir_isign(&b
, srcs
[0]);
1538 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1539 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1540 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1541 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1542 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1543 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1544 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1546 result
= supports_ints
? nir_i2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1549 result
= supports_ints
? nir_u2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1552 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1586 case ir_unop_i642u64
:
1587 case ir_unop_u642i64
: {
1588 nir_alu_type src_type
= nir_get_nir_type_for_glsl_base_type(types
[0]);
1589 nir_alu_type dst_type
= nir_get_nir_type_for_glsl_base_type(out_type
);
1590 result
= nir_build_alu(&b
, nir_type_conversion_op(src_type
, dst_type
,
1591 nir_rounding_mode_undef
),
1592 srcs
[0], NULL
, NULL
, NULL
);
1593 /* b2i and b2f don't have fixed bit-size versions so the builder will
1594 * just assume 32 and we have to fix it up here.
1596 result
->bit_size
= nir_alu_type_get_type_size(dst_type
);
1600 case ir_unop_bitcast_i2f
:
1601 case ir_unop_bitcast_f2i
:
1602 case ir_unop_bitcast_u2f
:
1603 case ir_unop_bitcast_f2u
:
1604 case ir_unop_bitcast_i642d
:
1605 case ir_unop_bitcast_d2i64
:
1606 case ir_unop_bitcast_u642d
:
1607 case ir_unop_bitcast_d2u64
:
1608 case ir_unop_subroutine_to_int
:
1610 result
= nir_imov(&b
, srcs
[0]);
1612 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1613 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1614 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1615 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1616 case ir_unop_frexp_exp
: result
= nir_frexp_exp(&b
, srcs
[0]); break;
1617 case ir_unop_frexp_sig
: result
= nir_frexp_sig(&b
, srcs
[0]); break;
1618 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1619 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1620 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1621 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1622 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1623 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1624 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1625 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1626 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1627 case ir_unop_pack_snorm_2x16
:
1628 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1630 case ir_unop_pack_snorm_4x8
:
1631 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1633 case ir_unop_pack_unorm_2x16
:
1634 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1636 case ir_unop_pack_unorm_4x8
:
1637 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1639 case ir_unop_pack_half_2x16
:
1640 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1642 case ir_unop_unpack_snorm_2x16
:
1643 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1645 case ir_unop_unpack_snorm_4x8
:
1646 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1648 case ir_unop_unpack_unorm_2x16
:
1649 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1651 case ir_unop_unpack_unorm_4x8
:
1652 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1654 case ir_unop_unpack_half_2x16
:
1655 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1657 case ir_unop_pack_sampler_2x32
:
1658 case ir_unop_pack_image_2x32
:
1659 case ir_unop_pack_double_2x32
:
1660 case ir_unop_pack_int_2x32
:
1661 case ir_unop_pack_uint_2x32
:
1662 result
= nir_pack_64_2x32(&b
, srcs
[0]);
1664 case ir_unop_unpack_sampler_2x32
:
1665 case ir_unop_unpack_image_2x32
:
1666 case ir_unop_unpack_double_2x32
:
1667 case ir_unop_unpack_int_2x32
:
1668 case ir_unop_unpack_uint_2x32
:
1669 result
= nir_unpack_64_2x32(&b
, srcs
[0]);
1671 case ir_unop_bitfield_reverse
:
1672 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1674 case ir_unop_bit_count
:
1675 result
= nir_bit_count(&b
, srcs
[0]);
1677 case ir_unop_find_msb
:
1679 case GLSL_TYPE_UINT
:
1680 result
= nir_ufind_msb(&b
, srcs
[0]);
1683 result
= nir_ifind_msb(&b
, srcs
[0]);
1686 unreachable("Invalid type for findMSB()");
1689 case ir_unop_find_lsb
:
1690 result
= nir_find_lsb(&b
, srcs
[0]);
1694 switch (ir
->type
->vector_elements
) {
1696 switch (ir
->operands
[0]->type
->vector_elements
) {
1697 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1698 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1699 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1700 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1701 default: unreachable("not reached");
1705 switch (ir
->operands
[0]->type
->vector_elements
) {
1706 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1707 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1708 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1709 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1710 default: unreachable("not reached");
1714 switch (ir
->operands
[0]->type
->vector_elements
) {
1715 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1716 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1717 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1718 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1719 default: unreachable("not reached");
1723 switch (ir
->operands
[0]->type
->vector_elements
) {
1724 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1725 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1726 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1727 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1728 default: unreachable("not reached");
1732 unreachable("not reached");
1735 case ir_unop_get_buffer_size
: {
1736 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1738 nir_intrinsic_get_buffer_size
);
1739 load
->num_components
= ir
->type
->vector_elements
;
1740 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1741 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1742 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1747 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1748 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1751 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1752 : nir_isub(&b
, srcs
[0], srcs
[1]);
1755 result
= type_is_float(out_type
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1756 : nir_imul(&b
, srcs
[0], srcs
[1]);
1759 if (type_is_float(out_type
))
1760 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1761 else if (type_is_signed(out_type
))
1762 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1764 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1767 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1768 : nir_umod(&b
, srcs
[0], srcs
[1]);
1771 if (type_is_float(out_type
))
1772 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1773 else if (type_is_signed(out_type
))
1774 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1776 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1779 if (type_is_float(out_type
))
1780 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1781 else if (type_is_signed(out_type
))
1782 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1784 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1786 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1787 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1788 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1789 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1790 case ir_binop_logic_and
:
1791 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1792 : nir_fand(&b
, srcs
[0], srcs
[1]);
1794 case ir_binop_logic_or
:
1795 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1796 : nir_for(&b
, srcs
[0], srcs
[1]);
1798 case ir_binop_logic_xor
:
1799 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1800 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1802 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1803 case ir_binop_rshift
:
1804 result
= (type_is_signed(out_type
)) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1805 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1807 case ir_binop_imul_high
:
1808 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1809 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1811 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1812 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1814 if (supports_ints
) {
1815 if (type_is_float(types
[0]))
1816 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1817 else if (type_is_signed(types
[0]))
1818 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1820 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1822 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1825 case ir_binop_gequal
:
1826 if (supports_ints
) {
1827 if (type_is_float(types
[0]))
1828 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1829 else if (type_is_signed(types
[0]))
1830 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1832 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1834 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1837 case ir_binop_equal
:
1838 if (supports_ints
) {
1839 if (type_is_float(types
[0]))
1840 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1842 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1844 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1847 case ir_binop_nequal
:
1848 if (supports_ints
) {
1849 if (type_is_float(types
[0]))
1850 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1852 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1854 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1857 case ir_binop_all_equal
:
1858 if (supports_ints
) {
1859 if (type_is_float(types
[0])) {
1860 switch (ir
->operands
[0]->type
->vector_elements
) {
1861 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1862 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1863 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1864 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1866 unreachable("not reached");
1869 switch (ir
->operands
[0]->type
->vector_elements
) {
1870 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1871 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1872 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1873 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1875 unreachable("not reached");
1879 switch (ir
->operands
[0]->type
->vector_elements
) {
1880 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1881 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1882 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1883 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1885 unreachable("not reached");
1889 case ir_binop_any_nequal
:
1890 if (supports_ints
) {
1891 if (type_is_float(types
[0])) {
1892 switch (ir
->operands
[0]->type
->vector_elements
) {
1893 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1894 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1895 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1896 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1898 unreachable("not reached");
1901 switch (ir
->operands
[0]->type
->vector_elements
) {
1902 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1903 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1904 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1905 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1907 unreachable("not reached");
1911 switch (ir
->operands
[0]->type
->vector_elements
) {
1912 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1913 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1914 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1915 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1917 unreachable("not reached");
1922 switch (ir
->operands
[0]->type
->vector_elements
) {
1923 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1924 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1925 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1927 unreachable("not reached");
1931 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1933 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1936 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1940 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1942 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1944 case ir_triop_bitfield_extract
:
1945 result
= (out_type
== GLSL_TYPE_INT
) ?
1946 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1947 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1949 case ir_quadop_bitfield_insert
:
1950 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1952 case ir_quadop_vector
:
1953 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1957 unreachable("not reached");
1962 nir_visitor::visit(ir_swizzle
*ir
)
1964 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1965 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1966 ir
->type
->vector_elements
, !supports_ints
);
1970 nir_visitor::visit(ir_texture
*ir
)
1977 num_srcs
= 1; /* coordinate */
1982 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1983 num_srcs
= 2; /* coordinate, bias/lod */
1987 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1993 if (ir
->lod_info
.lod
!= NULL
)
1994 num_srcs
= 2; /* coordinate, lod */
1996 num_srcs
= 1; /* coordinate */
2000 op
= nir_texop_txf_ms
;
2001 num_srcs
= 2; /* coordinate, sample_index */
2006 if (ir
->lod_info
.lod
!= NULL
)
2007 num_srcs
= 1; /* lod */
2014 num_srcs
= 1; /* coordinate */
2019 num_srcs
= 1; /* coordinate */
2022 case ir_query_levels
:
2023 op
= nir_texop_query_levels
;
2027 case ir_texture_samples
:
2028 op
= nir_texop_texture_samples
;
2032 case ir_samples_identical
:
2033 op
= nir_texop_samples_identical
;
2034 num_srcs
= 1; /* coordinate */
2038 unreachable("not reached");
2041 if (ir
->projector
!= NULL
)
2043 if (ir
->shadow_comparator
!= NULL
)
2045 if (ir
->offset
!= NULL
)
2048 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
2051 instr
->sampler_dim
=
2052 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
2053 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
2054 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
2055 if (instr
->is_shadow
)
2056 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
2057 switch (ir
->type
->base_type
) {
2058 case GLSL_TYPE_FLOAT
:
2059 instr
->dest_type
= nir_type_float
;
2062 instr
->dest_type
= nir_type_int
;
2064 case GLSL_TYPE_BOOL
:
2065 case GLSL_TYPE_UINT
:
2066 instr
->dest_type
= nir_type_uint
;
2069 unreachable("not reached");
2072 instr
->texture
= evaluate_deref(&instr
->instr
, ir
->sampler
);
2074 unsigned src_number
= 0;
2076 if (ir
->coordinate
!= NULL
) {
2077 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
2078 instr
->src
[src_number
].src
=
2079 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
2080 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2084 if (ir
->projector
!= NULL
) {
2085 instr
->src
[src_number
].src
=
2086 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
2087 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2091 if (ir
->shadow_comparator
!= NULL
) {
2092 instr
->src
[src_number
].src
=
2093 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparator
));
2094 instr
->src
[src_number
].src_type
= nir_tex_src_comparator
;
2098 if (ir
->offset
!= NULL
) {
2099 /* we don't support multiple offsets yet */
2100 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2102 instr
->src
[src_number
].src
=
2103 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
2104 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2110 instr
->src
[src_number
].src
=
2111 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
2112 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2119 if (ir
->lod_info
.lod
!= NULL
) {
2120 instr
->src
[src_number
].src
=
2121 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
2122 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2128 instr
->src
[src_number
].src
=
2129 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
2130 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2132 instr
->src
[src_number
].src
=
2133 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
2134 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2139 instr
->src
[src_number
].src
=
2140 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
2141 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2146 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2153 assert(src_number
== num_srcs
);
2155 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2156 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2160 nir_visitor::visit(ir_constant
*ir
)
2163 * We don't know if this variable is an array or struct that gets
2164 * dereferenced, so do the safe thing an make it a variable with a
2165 * constant initializer and return a dereference.
2169 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2170 var
->data
.read_only
= true;
2171 var
->constant_initializer
= constant_copy(ir
, var
);
2173 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2174 this->deref_tail
= &this->deref_head
->deref
;
2178 nir_visitor::visit(ir_dereference_variable
*ir
)
2180 struct hash_entry
*entry
=
2181 _mesa_hash_table_search(this->var_table
, ir
->var
);
2183 nir_variable
*var
= (nir_variable
*) entry
->data
;
2185 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2186 this->deref_head
= deref
;
2187 this->deref_tail
= &deref
->deref
;
2191 nir_visitor::visit(ir_dereference_record
*ir
)
2193 ir
->record
->accept(this);
2195 int field_index
= ir
->field_idx
;
2196 assert(field_index
>= 0);
2198 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2199 deref
->deref
.type
= ir
->type
;
2200 this->deref_tail
->child
= &deref
->deref
;
2201 this->deref_tail
= &deref
->deref
;
2205 nir_visitor::visit(ir_dereference_array
*ir
)
2207 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2208 deref
->deref
.type
= ir
->type
;
2210 ir_constant
*const_index
= ir
->array_index
->as_constant();
2211 if (const_index
!= NULL
) {
2212 deref
->deref_array_type
= nir_deref_array_type_direct
;
2213 deref
->base_offset
= const_index
->value
.u
[0];
2215 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2217 nir_src_for_ssa(evaluate_rvalue(ir
->array_index
));
2220 ir
->array
->accept(this);
2222 this->deref_tail
->child
= &deref
->deref
;
2223 ralloc_steal(this->deref_tail
, deref
);
2224 this->deref_tail
= &deref
->deref
;
2228 nir_visitor::visit(ir_barrier
*)
2230 nir_intrinsic_instr
*instr
=
2231 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2232 nir_builder_instr_insert(&b
, &instr
->instr
);