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"
35 #include "main/mtypes.h"
38 * pass to lower GLSL IR to NIR
40 * This will lower variable dereferences to loads/stores of corresponding
41 * variables in NIR - the variables will be converted to registers in a later
47 class nir_visitor
: public ir_visitor
50 nir_visitor(nir_shader
*shader
);
53 virtual void visit(ir_variable
*);
54 virtual void visit(ir_function
*);
55 virtual void visit(ir_function_signature
*);
56 virtual void visit(ir_loop
*);
57 virtual void visit(ir_if
*);
58 virtual void visit(ir_discard
*);
59 virtual void visit(ir_loop_jump
*);
60 virtual void visit(ir_return
*);
61 virtual void visit(ir_call
*);
62 virtual void visit(ir_assignment
*);
63 virtual void visit(ir_emit_vertex
*);
64 virtual void visit(ir_end_primitive
*);
65 virtual void visit(ir_expression
*);
66 virtual void visit(ir_swizzle
*);
67 virtual void visit(ir_texture
*);
68 virtual void visit(ir_constant
*);
69 virtual void visit(ir_dereference_variable
*);
70 virtual void visit(ir_dereference_record
*);
71 virtual void visit(ir_dereference_array
*);
72 virtual void visit(ir_barrier
*);
74 void create_function(ir_function_signature
*ir
);
77 void add_instr(nir_instr
*instr
, unsigned num_components
, unsigned bit_size
);
78 nir_ssa_def
*evaluate_rvalue(ir_rvalue
*ir
);
80 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
**srcs
);
81 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
);
82 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
84 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
85 nir_ssa_def
*src2
, nir_ssa_def
*src3
);
90 nir_function_impl
*impl
;
92 nir_ssa_def
*result
; /* result of the expression tree last visited */
94 nir_deref_instr
*evaluate_deref(ir_instruction
*ir
);
96 /* most recent deref instruction created */
97 nir_deref_instr
*deref
;
99 nir_variable
*var
; /* variable created by ir_variable visitor */
101 /* whether the IR we're operating on is per-function or global */
104 /* map of ir_variable -> nir_variable */
105 struct hash_table
*var_table
;
107 /* map of ir_function_signature -> nir_function_overload */
108 struct hash_table
*overload_table
;
112 * This visitor runs before the main visitor, calling create_function() for
113 * each function so that the main visitor can resolve forward references in
117 class nir_function_visitor
: public ir_hierarchical_visitor
120 nir_function_visitor(nir_visitor
*v
) : visitor(v
)
123 virtual ir_visitor_status
visit_enter(ir_function
*);
126 nir_visitor
*visitor
;
129 } /* end of anonymous namespace */
132 glsl_to_nir(const struct gl_shader_program
*shader_prog
,
133 gl_shader_stage stage
,
134 const nir_shader_compiler_options
*options
)
136 struct gl_linked_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
138 nir_shader
*shader
= nir_shader_create(NULL
, stage
, options
,
141 nir_visitor
v1(shader
);
142 nir_function_visitor
v2(&v1
);
144 visit_exec_list(sh
->ir
, &v1
);
146 nir_lower_constant_initializers(shader
, (nir_variable_mode
)~0);
148 /* Remap the locations to slots so those requiring two slots will occupy
149 * two locations. For instance, if we have in the IR code a dvec3 attr0 in
150 * location 0 and vec4 attr1 in location 1, in NIR attr0 will use
151 * locations/slots 0 and 1, and attr1 will use location/slot 2 */
152 if (shader
->info
.stage
== MESA_SHADER_VERTEX
) {
153 sh
->Program
->DualSlotInputs
= nir_get_dual_slot_attributes(shader
);
154 if (options
->vs_inputs_dual_locations
)
155 nir_remap_dual_slot_attributes(shader
, sh
->Program
->DualSlotInputs
);
158 shader
->info
.name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
159 if (shader_prog
->Label
)
160 shader
->info
.label
= ralloc_strdup(shader
, shader_prog
->Label
);
162 /* Check for transform feedback varyings specified via the API */
163 shader
->info
.has_transform_feedback_varyings
=
164 shader_prog
->TransformFeedback
.NumVarying
> 0;
166 /* Check for transform feedback varyings specified in the Shader */
167 if (shader_prog
->last_vert_prog
)
168 shader
->info
.has_transform_feedback_varyings
|=
169 shader_prog
->last_vert_prog
->sh
.LinkedTransformFeedback
->NumVarying
> 0;
174 nir_visitor::nir_visitor(nir_shader
*shader
)
176 this->supports_ints
= shader
->options
->native_integers
;
177 this->shader
= shader
;
178 this->is_global
= true;
179 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
180 _mesa_key_pointer_equal
);
181 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
182 _mesa_key_pointer_equal
);
186 memset(&this->b
, 0, sizeof(this->b
));
189 nir_visitor::~nir_visitor()
191 _mesa_hash_table_destroy(this->var_table
, NULL
);
192 _mesa_hash_table_destroy(this->overload_table
, NULL
);
196 nir_visitor::evaluate_deref(ir_instruction
*ir
)
202 static nir_constant
*
203 constant_copy(ir_constant
*ir
, void *mem_ctx
)
208 nir_constant
*ret
= rzalloc(mem_ctx
, nir_constant
);
210 const unsigned rows
= ir
->type
->vector_elements
;
211 const unsigned cols
= ir
->type
->matrix_columns
;
214 ret
->num_elements
= 0;
215 switch (ir
->type
->base_type
) {
217 /* Only float base types can be matrices. */
220 for (unsigned r
= 0; r
< rows
; r
++)
221 ret
->values
[0].u32
[r
] = ir
->value
.u
[r
];
226 /* Only float base types can be matrices. */
229 for (unsigned r
= 0; r
< rows
; r
++)
230 ret
->values
[0].i32
[r
] = ir
->value
.i
[r
];
234 case GLSL_TYPE_FLOAT
:
235 for (unsigned c
= 0; c
< cols
; c
++) {
236 for (unsigned r
= 0; r
< rows
; r
++)
237 ret
->values
[c
].f32
[r
] = ir
->value
.f
[c
* rows
+ r
];
241 case GLSL_TYPE_DOUBLE
:
242 for (unsigned c
= 0; c
< cols
; c
++) {
243 for (unsigned r
= 0; r
< rows
; r
++)
244 ret
->values
[c
].f64
[r
] = ir
->value
.d
[c
* rows
+ r
];
248 case GLSL_TYPE_UINT64
:
249 /* Only float base types can be matrices. */
252 for (unsigned r
= 0; r
< rows
; r
++)
253 ret
->values
[0].u64
[r
] = ir
->value
.u64
[r
];
256 case GLSL_TYPE_INT64
:
257 /* Only float base types can be matrices. */
260 for (unsigned r
= 0; r
< rows
; r
++)
261 ret
->values
[0].i64
[r
] = ir
->value
.i64
[r
];
265 /* Only float base types can be matrices. */
268 for (unsigned r
= 0; r
< rows
; r
++)
269 ret
->values
[0].u32
[r
] = ir
->value
.b
[r
] ? NIR_TRUE
: NIR_FALSE
;
273 case GLSL_TYPE_STRUCT
:
274 case GLSL_TYPE_ARRAY
:
275 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
277 ret
->num_elements
= ir
->type
->length
;
279 for (i
= 0; i
< ir
->type
->length
; i
++)
280 ret
->elements
[i
] = constant_copy(ir
->const_elements
[i
], mem_ctx
);
284 unreachable("not reached");
291 nir_visitor::visit(ir_variable
*ir
)
293 /* TODO: In future we should switch to using the NIR lowering pass but for
294 * now just ignore these variables as GLSL IR should have lowered them.
295 * Anything remaining are just dead vars that weren't cleaned up.
297 if (ir
->data
.mode
== ir_var_shader_shared
)
300 nir_variable
*var
= rzalloc(shader
, nir_variable
);
301 var
->type
= ir
->type
;
302 var
->name
= ralloc_strdup(var
, ir
->name
);
304 var
->data
.always_active_io
= ir
->data
.always_active_io
;
305 var
->data
.read_only
= ir
->data
.read_only
;
306 var
->data
.centroid
= ir
->data
.centroid
;
307 var
->data
.sample
= ir
->data
.sample
;
308 var
->data
.patch
= ir
->data
.patch
;
309 var
->data
.invariant
= ir
->data
.invariant
;
310 var
->data
.location
= ir
->data
.location
;
311 var
->data
.stream
= ir
->data
.stream
;
312 var
->data
.compact
= false;
314 switch(ir
->data
.mode
) {
316 case ir_var_temporary
:
318 var
->data
.mode
= nir_var_global
;
320 var
->data
.mode
= nir_var_local
;
323 case ir_var_function_in
:
324 case ir_var_function_out
:
325 case ir_var_function_inout
:
326 case ir_var_const_in
:
327 var
->data
.mode
= nir_var_local
;
330 case ir_var_shader_in
:
331 if (shader
->info
.stage
== MESA_SHADER_FRAGMENT
&&
332 ir
->data
.location
== VARYING_SLOT_FACE
) {
333 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
334 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
335 var
->data
.mode
= nir_var_system_value
;
336 } else if (shader
->info
.stage
== MESA_SHADER_GEOMETRY
&&
337 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
338 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
339 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
340 var
->data
.mode
= nir_var_system_value
;
342 var
->data
.mode
= nir_var_shader_in
;
344 if (shader
->info
.stage
== MESA_SHADER_TESS_EVAL
&&
345 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
346 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
347 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
352 case ir_var_shader_out
:
353 var
->data
.mode
= nir_var_shader_out
;
354 if (shader
->info
.stage
== MESA_SHADER_TESS_CTRL
&&
355 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
356 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
357 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
362 var
->data
.mode
= nir_var_uniform
;
365 case ir_var_shader_storage
:
366 var
->data
.mode
= nir_var_shader_storage
;
369 case ir_var_system_value
:
370 var
->data
.mode
= nir_var_system_value
;
374 unreachable("not reached");
377 var
->data
.interpolation
= ir
->data
.interpolation
;
378 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
379 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
380 var
->data
.location_frac
= ir
->data
.location_frac
;
382 if (var
->data
.pixel_center_integer
) {
383 assert(shader
->info
.stage
== MESA_SHADER_FRAGMENT
);
384 shader
->info
.fs
.pixel_center_integer
= true;
387 switch (ir
->data
.depth_layout
) {
388 case ir_depth_layout_none
:
389 var
->data
.depth_layout
= nir_depth_layout_none
;
391 case ir_depth_layout_any
:
392 var
->data
.depth_layout
= nir_depth_layout_any
;
394 case ir_depth_layout_greater
:
395 var
->data
.depth_layout
= nir_depth_layout_greater
;
397 case ir_depth_layout_less
:
398 var
->data
.depth_layout
= nir_depth_layout_less
;
400 case ir_depth_layout_unchanged
:
401 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
404 unreachable("not reached");
407 var
->data
.index
= ir
->data
.index
;
408 var
->data
.descriptor_set
= 0;
409 var
->data
.binding
= ir
->data
.binding
;
410 var
->data
.explicit_binding
= ir
->data
.explicit_binding
;
411 var
->data
.bindless
= ir
->data
.bindless
;
412 var
->data
.offset
= ir
->data
.offset
;
414 unsigned image_access
= 0;
415 if (ir
->data
.memory_read_only
)
416 image_access
|= ACCESS_NON_WRITEABLE
;
417 if (ir
->data
.memory_write_only
)
418 image_access
|= ACCESS_NON_READABLE
;
419 if (ir
->data
.memory_coherent
)
420 image_access
|= ACCESS_COHERENT
;
421 if (ir
->data
.memory_volatile
)
422 image_access
|= ACCESS_VOLATILE
;
423 if (ir
->data
.memory_restrict
)
424 image_access
|= ACCESS_RESTRICT
;
425 var
->data
.image
.access
= (gl_access_qualifier
)image_access
;
426 var
->data
.image
.format
= ir
->data
.image_format
;
428 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
429 var
->data
.explicit_xfb_buffer
= ir
->data
.explicit_xfb_buffer
;
430 var
->data
.explicit_xfb_stride
= ir
->data
.explicit_xfb_stride
;
431 var
->data
.xfb_buffer
= ir
->data
.xfb_buffer
;
432 var
->data
.xfb_stride
= ir
->data
.xfb_stride
;
434 var
->num_state_slots
= ir
->get_num_state_slots();
435 if (var
->num_state_slots
> 0) {
436 var
->state_slots
= rzalloc_array(var
, nir_state_slot
,
437 var
->num_state_slots
);
439 ir_state_slot
*state_slots
= ir
->get_state_slots();
440 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
441 for (unsigned j
= 0; j
< 5; j
++)
442 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
443 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
446 var
->state_slots
= NULL
;
449 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
451 var
->interface_type
= ir
->get_interface_type();
453 if (var
->data
.mode
== nir_var_local
)
454 nir_function_impl_add_variable(impl
, var
);
456 nir_shader_add_variable(shader
, var
);
458 _mesa_hash_table_insert(var_table
, ir
, var
);
463 nir_function_visitor::visit_enter(ir_function
*ir
)
465 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
466 visitor
->create_function(sig
);
468 return visit_continue_with_parent
;
472 nir_visitor::create_function(ir_function_signature
*ir
)
474 if (ir
->is_intrinsic())
477 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
479 assert(ir
->parameters
.is_empty());
480 assert(ir
->return_type
== glsl_type::void_type
);
482 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
486 nir_visitor::visit(ir_function
*ir
)
488 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
493 nir_visitor::visit(ir_function_signature
*ir
)
495 if (ir
->is_intrinsic())
498 struct hash_entry
*entry
=
499 _mesa_hash_table_search(this->overload_table
, ir
);
502 nir_function
*func
= (nir_function
*) entry
->data
;
504 if (ir
->is_defined
) {
505 nir_function_impl
*impl
= nir_function_impl_create(func
);
508 assert(strcmp(func
->name
, "main") == 0);
509 assert(ir
->parameters
.is_empty());
511 this->is_global
= false;
513 nir_builder_init(&b
, impl
);
514 b
.cursor
= nir_after_cf_list(&impl
->body
);
515 visit_exec_list(&ir
->body
, this);
517 this->is_global
= true;
524 nir_visitor::visit(ir_loop
*ir
)
527 visit_exec_list(&ir
->body_instructions
, this);
528 nir_pop_loop(&b
, NULL
);
532 nir_visitor::visit(ir_if
*ir
)
534 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
535 visit_exec_list(&ir
->then_instructions
, this);
536 nir_push_else(&b
, NULL
);
537 visit_exec_list(&ir
->else_instructions
, this);
538 nir_pop_if(&b
, NULL
);
542 nir_visitor::visit(ir_discard
*ir
)
545 * discards aren't treated as control flow, because before we lower them
546 * they can appear anywhere in the shader and the stuff after them may still
547 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
548 * discards will be immediately followed by a return.
551 nir_intrinsic_instr
*discard
;
553 discard
= nir_intrinsic_instr_create(this->shader
,
554 nir_intrinsic_discard_if
);
556 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
558 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
561 nir_builder_instr_insert(&b
, &discard
->instr
);
565 nir_visitor::visit(ir_emit_vertex
*ir
)
567 nir_intrinsic_instr
*instr
=
568 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
569 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
570 nir_builder_instr_insert(&b
, &instr
->instr
);
574 nir_visitor::visit(ir_end_primitive
*ir
)
576 nir_intrinsic_instr
*instr
=
577 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
578 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
579 nir_builder_instr_insert(&b
, &instr
->instr
);
583 nir_visitor::visit(ir_loop_jump
*ir
)
587 case ir_loop_jump::jump_break
:
588 type
= nir_jump_break
;
590 case ir_loop_jump::jump_continue
:
591 type
= nir_jump_continue
;
594 unreachable("not reached");
597 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
598 nir_builder_instr_insert(&b
, &instr
->instr
);
602 nir_visitor::visit(ir_return
*ir
)
604 assert(ir
->value
== NULL
);
605 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
606 nir_builder_instr_insert(&b
, &instr
->instr
);
610 nir_visitor::visit(ir_call
*ir
)
612 if (ir
->callee
->is_intrinsic()) {
615 switch (ir
->callee
->intrinsic_id
) {
616 case ir_intrinsic_atomic_counter_read
:
617 op
= nir_intrinsic_atomic_counter_read_deref
;
619 case ir_intrinsic_atomic_counter_increment
:
620 op
= nir_intrinsic_atomic_counter_inc_deref
;
622 case ir_intrinsic_atomic_counter_predecrement
:
623 op
= nir_intrinsic_atomic_counter_pre_dec_deref
;
625 case ir_intrinsic_atomic_counter_add
:
626 op
= nir_intrinsic_atomic_counter_add_deref
;
628 case ir_intrinsic_atomic_counter_and
:
629 op
= nir_intrinsic_atomic_counter_and_deref
;
631 case ir_intrinsic_atomic_counter_or
:
632 op
= nir_intrinsic_atomic_counter_or_deref
;
634 case ir_intrinsic_atomic_counter_xor
:
635 op
= nir_intrinsic_atomic_counter_xor_deref
;
637 case ir_intrinsic_atomic_counter_min
:
638 op
= nir_intrinsic_atomic_counter_min_deref
;
640 case ir_intrinsic_atomic_counter_max
:
641 op
= nir_intrinsic_atomic_counter_max_deref
;
643 case ir_intrinsic_atomic_counter_exchange
:
644 op
= nir_intrinsic_atomic_counter_exchange_deref
;
646 case ir_intrinsic_atomic_counter_comp_swap
:
647 op
= nir_intrinsic_atomic_counter_comp_swap_deref
;
649 case ir_intrinsic_image_load
:
650 op
= nir_intrinsic_image_deref_load
;
652 case ir_intrinsic_image_store
:
653 op
= nir_intrinsic_image_deref_store
;
655 case ir_intrinsic_image_atomic_add
:
656 op
= ir
->return_deref
->type
->is_integer_32_64()
657 ? nir_intrinsic_image_deref_atomic_add
658 : nir_intrinsic_image_deref_atomic_fadd
;
660 case ir_intrinsic_image_atomic_min
:
661 op
= nir_intrinsic_image_deref_atomic_min
;
663 case ir_intrinsic_image_atomic_max
:
664 op
= nir_intrinsic_image_deref_atomic_max
;
666 case ir_intrinsic_image_atomic_and
:
667 op
= nir_intrinsic_image_deref_atomic_and
;
669 case ir_intrinsic_image_atomic_or
:
670 op
= nir_intrinsic_image_deref_atomic_or
;
672 case ir_intrinsic_image_atomic_xor
:
673 op
= nir_intrinsic_image_deref_atomic_xor
;
675 case ir_intrinsic_image_atomic_exchange
:
676 op
= nir_intrinsic_image_deref_atomic_exchange
;
678 case ir_intrinsic_image_atomic_comp_swap
:
679 op
= nir_intrinsic_image_deref_atomic_comp_swap
;
681 case ir_intrinsic_memory_barrier
:
682 op
= nir_intrinsic_memory_barrier
;
684 case ir_intrinsic_image_size
:
685 op
= nir_intrinsic_image_deref_size
;
687 case ir_intrinsic_image_samples
:
688 op
= nir_intrinsic_image_deref_samples
;
690 case ir_intrinsic_ssbo_store
:
691 op
= nir_intrinsic_store_ssbo
;
693 case ir_intrinsic_ssbo_load
:
694 op
= nir_intrinsic_load_ssbo
;
696 case ir_intrinsic_ssbo_atomic_add
:
697 op
= ir
->return_deref
->type
->is_integer_32_64()
698 ? nir_intrinsic_ssbo_atomic_add
: nir_intrinsic_ssbo_atomic_fadd
;
700 case ir_intrinsic_ssbo_atomic_and
:
701 op
= nir_intrinsic_ssbo_atomic_and
;
703 case ir_intrinsic_ssbo_atomic_or
:
704 op
= nir_intrinsic_ssbo_atomic_or
;
706 case ir_intrinsic_ssbo_atomic_xor
:
707 op
= nir_intrinsic_ssbo_atomic_xor
;
709 case ir_intrinsic_ssbo_atomic_min
:
710 assert(ir
->return_deref
);
711 if (ir
->return_deref
->type
== glsl_type::int_type
)
712 op
= nir_intrinsic_ssbo_atomic_imin
;
713 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
714 op
= nir_intrinsic_ssbo_atomic_umin
;
715 else if (ir
->return_deref
->type
== glsl_type::float_type
)
716 op
= nir_intrinsic_ssbo_atomic_fmin
;
718 unreachable("Invalid type");
720 case ir_intrinsic_ssbo_atomic_max
:
721 assert(ir
->return_deref
);
722 if (ir
->return_deref
->type
== glsl_type::int_type
)
723 op
= nir_intrinsic_ssbo_atomic_imax
;
724 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
725 op
= nir_intrinsic_ssbo_atomic_umax
;
726 else if (ir
->return_deref
->type
== glsl_type::float_type
)
727 op
= nir_intrinsic_ssbo_atomic_fmax
;
729 unreachable("Invalid type");
731 case ir_intrinsic_ssbo_atomic_exchange
:
732 op
= nir_intrinsic_ssbo_atomic_exchange
;
734 case ir_intrinsic_ssbo_atomic_comp_swap
:
735 op
= ir
->return_deref
->type
->is_integer_32_64()
736 ? nir_intrinsic_ssbo_atomic_comp_swap
737 : nir_intrinsic_ssbo_atomic_fcomp_swap
;
739 case ir_intrinsic_shader_clock
:
740 op
= nir_intrinsic_shader_clock
;
742 case ir_intrinsic_begin_invocation_interlock
:
743 op
= nir_intrinsic_begin_invocation_interlock
;
745 case ir_intrinsic_end_invocation_interlock
:
746 op
= nir_intrinsic_end_invocation_interlock
;
748 case ir_intrinsic_begin_fragment_shader_ordering
:
749 op
= nir_intrinsic_begin_fragment_shader_ordering
;
751 case ir_intrinsic_group_memory_barrier
:
752 op
= nir_intrinsic_group_memory_barrier
;
754 case ir_intrinsic_memory_barrier_atomic_counter
:
755 op
= nir_intrinsic_memory_barrier_atomic_counter
;
757 case ir_intrinsic_memory_barrier_buffer
:
758 op
= nir_intrinsic_memory_barrier_buffer
;
760 case ir_intrinsic_memory_barrier_image
:
761 op
= nir_intrinsic_memory_barrier_image
;
763 case ir_intrinsic_memory_barrier_shared
:
764 op
= nir_intrinsic_memory_barrier_shared
;
766 case ir_intrinsic_shared_load
:
767 op
= nir_intrinsic_load_shared
;
769 case ir_intrinsic_shared_store
:
770 op
= nir_intrinsic_store_shared
;
772 case ir_intrinsic_shared_atomic_add
:
773 op
= ir
->return_deref
->type
->is_integer_32_64()
774 ? nir_intrinsic_shared_atomic_add
775 : nir_intrinsic_shared_atomic_fadd
;
777 case ir_intrinsic_shared_atomic_and
:
778 op
= nir_intrinsic_shared_atomic_and
;
780 case ir_intrinsic_shared_atomic_or
:
781 op
= nir_intrinsic_shared_atomic_or
;
783 case ir_intrinsic_shared_atomic_xor
:
784 op
= nir_intrinsic_shared_atomic_xor
;
786 case ir_intrinsic_shared_atomic_min
:
787 assert(ir
->return_deref
);
788 if (ir
->return_deref
->type
== glsl_type::int_type
)
789 op
= nir_intrinsic_shared_atomic_imin
;
790 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
791 op
= nir_intrinsic_shared_atomic_umin
;
792 else if (ir
->return_deref
->type
== glsl_type::float_type
)
793 op
= nir_intrinsic_shared_atomic_fmin
;
795 unreachable("Invalid type");
797 case ir_intrinsic_shared_atomic_max
:
798 assert(ir
->return_deref
);
799 if (ir
->return_deref
->type
== glsl_type::int_type
)
800 op
= nir_intrinsic_shared_atomic_imax
;
801 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
802 op
= nir_intrinsic_shared_atomic_umax
;
803 else if (ir
->return_deref
->type
== glsl_type::float_type
)
804 op
= nir_intrinsic_shared_atomic_fmax
;
806 unreachable("Invalid type");
808 case ir_intrinsic_shared_atomic_exchange
:
809 op
= nir_intrinsic_shared_atomic_exchange
;
811 case ir_intrinsic_shared_atomic_comp_swap
:
812 op
= ir
->return_deref
->type
->is_integer_32_64()
813 ? nir_intrinsic_shared_atomic_comp_swap
814 : nir_intrinsic_shared_atomic_fcomp_swap
;
816 case ir_intrinsic_vote_any
:
817 op
= nir_intrinsic_vote_any
;
819 case ir_intrinsic_vote_all
:
820 op
= nir_intrinsic_vote_all
;
822 case ir_intrinsic_vote_eq
:
823 op
= nir_intrinsic_vote_ieq
;
825 case ir_intrinsic_ballot
:
826 op
= nir_intrinsic_ballot
;
828 case ir_intrinsic_read_invocation
:
829 op
= nir_intrinsic_read_invocation
;
831 case ir_intrinsic_read_first_invocation
:
832 op
= nir_intrinsic_read_first_invocation
;
835 unreachable("not reached");
838 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
839 nir_dest
*dest
= &instr
->dest
;
842 case nir_intrinsic_atomic_counter_read_deref
:
843 case nir_intrinsic_atomic_counter_inc_deref
:
844 case nir_intrinsic_atomic_counter_pre_dec_deref
:
845 case nir_intrinsic_atomic_counter_add_deref
:
846 case nir_intrinsic_atomic_counter_min_deref
:
847 case nir_intrinsic_atomic_counter_max_deref
:
848 case nir_intrinsic_atomic_counter_and_deref
:
849 case nir_intrinsic_atomic_counter_or_deref
:
850 case nir_intrinsic_atomic_counter_xor_deref
:
851 case nir_intrinsic_atomic_counter_exchange_deref
:
852 case nir_intrinsic_atomic_counter_comp_swap_deref
: {
853 /* Set the counter variable dereference. */
854 exec_node
*param
= ir
->actual_parameters
.get_head();
855 ir_dereference
*counter
= (ir_dereference
*)param
;
857 instr
->src
[0] = nir_src_for_ssa(&evaluate_deref(counter
)->dest
.ssa
);
858 param
= param
->get_next();
860 /* Set the intrinsic destination. */
861 if (ir
->return_deref
) {
862 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
865 /* Set the intrinsic parameters. */
866 if (!param
->is_tail_sentinel()) {
868 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
869 param
= param
->get_next();
872 if (!param
->is_tail_sentinel()) {
874 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
875 param
= param
->get_next();
878 nir_builder_instr_insert(&b
, &instr
->instr
);
881 case nir_intrinsic_image_deref_load
:
882 case nir_intrinsic_image_deref_store
:
883 case nir_intrinsic_image_deref_atomic_add
:
884 case nir_intrinsic_image_deref_atomic_min
:
885 case nir_intrinsic_image_deref_atomic_max
:
886 case nir_intrinsic_image_deref_atomic_and
:
887 case nir_intrinsic_image_deref_atomic_or
:
888 case nir_intrinsic_image_deref_atomic_xor
:
889 case nir_intrinsic_image_deref_atomic_exchange
:
890 case nir_intrinsic_image_deref_atomic_comp_swap
:
891 case nir_intrinsic_image_deref_atomic_fadd
:
892 case nir_intrinsic_image_deref_samples
:
893 case nir_intrinsic_image_deref_size
: {
894 nir_ssa_undef_instr
*instr_undef
=
895 nir_ssa_undef_instr_create(shader
, 1, 32);
896 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
898 /* Set the image variable dereference. */
899 exec_node
*param
= ir
->actual_parameters
.get_head();
900 ir_dereference
*image
= (ir_dereference
*)param
;
901 const glsl_type
*type
=
902 image
->variable_referenced()->type
->without_array();
904 instr
->src
[0] = nir_src_for_ssa(&evaluate_deref(image
)->dest
.ssa
);
905 param
= param
->get_next();
907 /* Set the intrinsic destination. */
908 if (ir
->return_deref
) {
909 unsigned num_components
= ir
->return_deref
->type
->vector_elements
;
910 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
911 num_components
, 32, NULL
);
914 if (op
== nir_intrinsic_image_deref_size
) {
915 instr
->num_components
= instr
->dest
.ssa
.num_components
;
916 } else if (op
== nir_intrinsic_image_deref_load
||
917 op
== nir_intrinsic_image_deref_store
) {
918 instr
->num_components
= 4;
921 if (op
== nir_intrinsic_image_deref_size
||
922 op
== nir_intrinsic_image_deref_samples
) {
923 nir_builder_instr_insert(&b
, &instr
->instr
);
927 /* Set the address argument, extending the coordinate vector to four
930 nir_ssa_def
*src_addr
=
931 evaluate_rvalue((ir_dereference
*)param
);
932 nir_ssa_def
*srcs
[4];
934 for (int i
= 0; i
< 4; i
++) {
935 if (i
< type
->coordinate_components())
936 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
938 srcs
[i
] = &instr_undef
->def
;
941 instr
->src
[1] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
942 param
= param
->get_next();
944 /* Set the sample argument, which is undefined for single-sample
947 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
949 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
950 param
= param
->get_next();
952 instr
->src
[2] = nir_src_for_ssa(&instr_undef
->def
);
955 /* Set the intrinsic parameters. */
956 if (!param
->is_tail_sentinel()) {
958 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
959 param
= param
->get_next();
962 if (!param
->is_tail_sentinel()) {
964 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
965 param
= param
->get_next();
967 nir_builder_instr_insert(&b
, &instr
->instr
);
970 case nir_intrinsic_memory_barrier
:
971 case nir_intrinsic_group_memory_barrier
:
972 case nir_intrinsic_memory_barrier_atomic_counter
:
973 case nir_intrinsic_memory_barrier_buffer
:
974 case nir_intrinsic_memory_barrier_image
:
975 case nir_intrinsic_memory_barrier_shared
:
976 nir_builder_instr_insert(&b
, &instr
->instr
);
978 case nir_intrinsic_shader_clock
:
979 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 2, 32, NULL
);
980 instr
->num_components
= 2;
981 nir_builder_instr_insert(&b
, &instr
->instr
);
983 case nir_intrinsic_begin_invocation_interlock
:
984 nir_builder_instr_insert(&b
, &instr
->instr
);
986 case nir_intrinsic_end_invocation_interlock
:
987 nir_builder_instr_insert(&b
, &instr
->instr
);
989 case nir_intrinsic_begin_fragment_shader_ordering
:
990 nir_builder_instr_insert(&b
, &instr
->instr
);
992 case nir_intrinsic_store_ssbo
: {
993 exec_node
*param
= ir
->actual_parameters
.get_head();
994 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
996 param
= param
->get_next();
997 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
999 param
= param
->get_next();
1000 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1002 param
= param
->get_next();
1003 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1006 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1007 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
1008 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
1009 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1010 instr
->num_components
= val
->type
->vector_elements
;
1012 nir_builder_instr_insert(&b
, &instr
->instr
);
1015 case nir_intrinsic_load_ssbo
: {
1016 exec_node
*param
= ir
->actual_parameters
.get_head();
1017 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
1019 param
= param
->get_next();
1020 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1022 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
1023 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1025 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1026 instr
->num_components
= type
->vector_elements
;
1028 /* Setup destination register */
1029 unsigned bit_size
= glsl_get_bit_size(type
);
1030 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1031 type
->vector_elements
, bit_size
, NULL
);
1033 /* Insert the created nir instruction now since in the case of boolean
1034 * result we will need to emit another instruction after it
1036 nir_builder_instr_insert(&b
, &instr
->instr
);
1039 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
1040 * consider a true boolean to be ~0. Fix this up with a != 0
1043 if (type
->is_boolean()) {
1044 nir_alu_instr
*load_ssbo_compare
=
1045 nir_alu_instr_create(shader
, nir_op_ine
);
1046 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
1047 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
1048 load_ssbo_compare
->src
[1].src
=
1049 nir_src_for_ssa(nir_imm_int(&b
, 0));
1050 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
1051 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
1052 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
1053 &load_ssbo_compare
->dest
.dest
,
1054 type
->vector_elements
, bit_size
, NULL
);
1055 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
1056 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
1057 dest
= &load_ssbo_compare
->dest
.dest
;
1061 case nir_intrinsic_ssbo_atomic_add
:
1062 case nir_intrinsic_ssbo_atomic_imin
:
1063 case nir_intrinsic_ssbo_atomic_umin
:
1064 case nir_intrinsic_ssbo_atomic_imax
:
1065 case nir_intrinsic_ssbo_atomic_umax
:
1066 case nir_intrinsic_ssbo_atomic_and
:
1067 case nir_intrinsic_ssbo_atomic_or
:
1068 case nir_intrinsic_ssbo_atomic_xor
:
1069 case nir_intrinsic_ssbo_atomic_exchange
:
1070 case nir_intrinsic_ssbo_atomic_comp_swap
:
1071 case nir_intrinsic_ssbo_atomic_fadd
:
1072 case nir_intrinsic_ssbo_atomic_fmin
:
1073 case nir_intrinsic_ssbo_atomic_fmax
:
1074 case nir_intrinsic_ssbo_atomic_fcomp_swap
: {
1075 int param_count
= ir
->actual_parameters
.length();
1076 assert(param_count
== 3 || param_count
== 4);
1079 exec_node
*param
= ir
->actual_parameters
.get_head();
1080 ir_instruction
*inst
= (ir_instruction
*) param
;
1081 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1084 param
= param
->get_next();
1085 inst
= (ir_instruction
*) param
;
1086 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1088 /* data1 parameter (this is always present) */
1089 param
= param
->get_next();
1090 inst
= (ir_instruction
*) param
;
1091 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1093 /* data2 parameter (only with atomic_comp_swap) */
1094 if (param_count
== 4) {
1095 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
||
1096 op
== nir_intrinsic_ssbo_atomic_fcomp_swap
);
1097 param
= param
->get_next();
1098 inst
= (ir_instruction
*) param
;
1099 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1103 assert(ir
->return_deref
);
1104 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1105 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1106 nir_builder_instr_insert(&b
, &instr
->instr
);
1109 case nir_intrinsic_load_shared
: {
1110 exec_node
*param
= ir
->actual_parameters
.get_head();
1111 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1113 nir_intrinsic_set_base(instr
, 0);
1114 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1116 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1117 instr
->num_components
= type
->vector_elements
;
1119 /* Setup destination register */
1120 unsigned bit_size
= glsl_get_bit_size(type
);
1121 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1122 type
->vector_elements
, bit_size
, NULL
);
1124 nir_builder_instr_insert(&b
, &instr
->instr
);
1127 case nir_intrinsic_store_shared
: {
1128 exec_node
*param
= ir
->actual_parameters
.get_head();
1129 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1131 param
= param
->get_next();
1132 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1134 param
= param
->get_next();
1135 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1138 nir_intrinsic_set_base(instr
, 0);
1139 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1141 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1143 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1144 instr
->num_components
= val
->type
->vector_elements
;
1146 nir_builder_instr_insert(&b
, &instr
->instr
);
1149 case nir_intrinsic_shared_atomic_add
:
1150 case nir_intrinsic_shared_atomic_imin
:
1151 case nir_intrinsic_shared_atomic_umin
:
1152 case nir_intrinsic_shared_atomic_imax
:
1153 case nir_intrinsic_shared_atomic_umax
:
1154 case nir_intrinsic_shared_atomic_and
:
1155 case nir_intrinsic_shared_atomic_or
:
1156 case nir_intrinsic_shared_atomic_xor
:
1157 case nir_intrinsic_shared_atomic_exchange
:
1158 case nir_intrinsic_shared_atomic_comp_swap
:
1159 case nir_intrinsic_shared_atomic_fadd
:
1160 case nir_intrinsic_shared_atomic_fmin
:
1161 case nir_intrinsic_shared_atomic_fmax
:
1162 case nir_intrinsic_shared_atomic_fcomp_swap
: {
1163 int param_count
= ir
->actual_parameters
.length();
1164 assert(param_count
== 2 || param_count
== 3);
1167 exec_node
*param
= ir
->actual_parameters
.get_head();
1168 ir_instruction
*inst
= (ir_instruction
*) param
;
1169 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1171 /* data1 parameter (this is always present) */
1172 param
= param
->get_next();
1173 inst
= (ir_instruction
*) param
;
1174 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1176 /* data2 parameter (only with atomic_comp_swap) */
1177 if (param_count
== 3) {
1178 assert(op
== nir_intrinsic_shared_atomic_comp_swap
||
1179 op
== nir_intrinsic_shared_atomic_fcomp_swap
);
1180 param
= param
->get_next();
1181 inst
= (ir_instruction
*) param
;
1183 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1187 assert(ir
->return_deref
);
1188 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1189 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1190 ir
->return_deref
->type
->vector_elements
,
1192 nir_builder_instr_insert(&b
, &instr
->instr
);
1195 case nir_intrinsic_vote_any
:
1196 case nir_intrinsic_vote_all
:
1197 case nir_intrinsic_vote_ieq
: {
1198 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
1199 instr
->num_components
= 1;
1201 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1202 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1204 nir_builder_instr_insert(&b
, &instr
->instr
);
1208 case nir_intrinsic_ballot
: {
1209 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1210 ir
->return_deref
->type
->vector_elements
, 64, NULL
);
1211 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1213 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1214 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1216 nir_builder_instr_insert(&b
, &instr
->instr
);
1219 case nir_intrinsic_read_invocation
: {
1220 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1221 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1222 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1224 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1225 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1227 ir_rvalue
*invocation
= (ir_rvalue
*) ir
->actual_parameters
.get_head()->next
;
1228 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(invocation
));
1230 nir_builder_instr_insert(&b
, &instr
->instr
);
1233 case nir_intrinsic_read_first_invocation
: {
1234 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1235 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1236 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1238 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1239 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1241 nir_builder_instr_insert(&b
, &instr
->instr
);
1245 unreachable("not reached");
1248 if (ir
->return_deref
)
1249 nir_store_deref(&b
, evaluate_deref(ir
->return_deref
), &dest
->ssa
, ~0);
1254 unreachable("glsl_to_nir only handles function calls to intrinsics");
1258 nir_visitor::visit(ir_assignment
*ir
)
1260 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1262 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1263 ir
->lhs
->variable_referenced()->data
.precise
;
1265 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1266 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1267 if (ir
->condition
) {
1268 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1269 nir_copy_deref(&b
, evaluate_deref(ir
->lhs
), evaluate_deref(ir
->rhs
));
1270 nir_pop_if(&b
, NULL
);
1272 nir_copy_deref(&b
, evaluate_deref(ir
->lhs
), evaluate_deref(ir
->rhs
));
1277 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1279 ir
->lhs
->accept(this);
1280 nir_deref_instr
*lhs_deref
= this->deref
;
1281 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1283 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1284 /* GLSL IR will give us the input to the write-masked assignment in a
1285 * single packed vector. So, for example, if the writemask is xzw, then
1286 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1290 unsigned component
= 0;
1291 for (unsigned i
= 0; i
< 4; i
++) {
1292 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1294 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1297 if (ir
->condition
) {
1298 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1299 nir_store_deref(&b
, lhs_deref
, src
, ir
->write_mask
);
1300 nir_pop_if(&b
, NULL
);
1302 nir_store_deref(&b
, lhs_deref
, src
, ir
->write_mask
);
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 this->result
= nir_load_deref(&b
, this->deref
);
1372 return this->result
;
1376 type_is_float(glsl_base_type type
)
1378 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
||
1379 type
== GLSL_TYPE_FLOAT16
;
1383 type_is_signed(glsl_base_type type
)
1385 return type
== GLSL_TYPE_INT
|| type
== GLSL_TYPE_INT64
||
1386 type
== GLSL_TYPE_INT16
;
1390 nir_visitor::visit(ir_expression
*ir
)
1392 /* Some special cases */
1393 switch (ir
->operation
) {
1394 case ir_binop_ubo_load
: {
1395 nir_intrinsic_instr
*load
=
1396 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1397 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1398 load
->num_components
= ir
->type
->vector_elements
;
1399 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1400 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1401 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1404 * In UBO's, a true boolean value is any non-zero value, but we consider
1405 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1408 if (ir
->type
->is_boolean())
1409 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1414 case ir_unop_interpolate_at_centroid
:
1415 case ir_binop_interpolate_at_offset
:
1416 case ir_binop_interpolate_at_sample
: {
1417 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1418 ir_swizzle
*swizzle
= NULL
;
1420 /* the api does not allow a swizzle here, but the varying packing code
1421 * may have pushed one into here.
1423 swizzle
= ir
->operands
[0]->as_swizzle();
1425 deref
= swizzle
->val
->as_dereference();
1429 deref
->accept(this);
1431 nir_intrinsic_op op
;
1432 if (this->deref
->mode
== nir_var_shader_in
) {
1433 switch (ir
->operation
) {
1434 case ir_unop_interpolate_at_centroid
:
1435 op
= nir_intrinsic_interp_deref_at_centroid
;
1437 case ir_binop_interpolate_at_offset
:
1438 op
= nir_intrinsic_interp_deref_at_offset
;
1440 case ir_binop_interpolate_at_sample
:
1441 op
= nir_intrinsic_interp_deref_at_sample
;
1444 unreachable("Invalid interpolation intrinsic");
1447 /* This case can happen if the vertex shader does not write the
1448 * given varying. In this case, the linker will lower it to a
1449 * global variable. Since interpolating a variable makes no
1450 * sense, we'll just turn it into a load which will probably
1451 * eventually end up as an SSA definition.
1453 assert(this->deref
->mode
== nir_var_global
);
1454 op
= nir_intrinsic_load_deref
;
1457 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1458 intrin
->num_components
= deref
->type
->vector_elements
;
1459 intrin
->src
[0] = nir_src_for_ssa(&this->deref
->dest
.ssa
);
1461 if (intrin
->intrinsic
== nir_intrinsic_interp_deref_at_offset
||
1462 intrin
->intrinsic
== nir_intrinsic_interp_deref_at_sample
)
1463 intrin
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1465 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1466 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1469 unsigned swiz
[4] = {
1470 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1473 result
= nir_swizzle(&b
, result
, swiz
,
1474 swizzle
->type
->vector_elements
, false);
1484 nir_ssa_def
*srcs
[4];
1485 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1486 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1488 glsl_base_type types
[4];
1489 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1491 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1493 types
[i
] = GLSL_TYPE_FLOAT
;
1495 glsl_base_type out_type
;
1497 out_type
= ir
->type
->base_type
;
1499 out_type
= GLSL_TYPE_FLOAT
;
1501 switch (ir
->operation
) {
1502 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1503 case ir_unop_logic_not
:
1504 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1507 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1508 : nir_ineg(&b
, srcs
[0]);
1511 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1512 : nir_iabs(&b
, srcs
[0]);
1514 case ir_unop_saturate
:
1515 assert(type_is_float(types
[0]));
1516 result
= nir_fsat(&b
, srcs
[0]);
1519 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1520 : nir_isign(&b
, srcs
[0]);
1522 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1523 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1524 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1525 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1526 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1527 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1528 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1530 result
= supports_ints
? nir_i2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1533 result
= supports_ints
? nir_u2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1536 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1570 case ir_unop_i642u64
:
1571 case ir_unop_u642i64
: {
1572 nir_alu_type src_type
= nir_get_nir_type_for_glsl_base_type(types
[0]);
1573 nir_alu_type dst_type
= nir_get_nir_type_for_glsl_base_type(out_type
);
1574 result
= nir_build_alu(&b
, nir_type_conversion_op(src_type
, dst_type
,
1575 nir_rounding_mode_undef
),
1576 srcs
[0], NULL
, NULL
, NULL
);
1577 /* b2i and b2f don't have fixed bit-size versions so the builder will
1578 * just assume 32 and we have to fix it up here.
1580 result
->bit_size
= nir_alu_type_get_type_size(dst_type
);
1584 case ir_unop_bitcast_i2f
:
1585 case ir_unop_bitcast_f2i
:
1586 case ir_unop_bitcast_u2f
:
1587 case ir_unop_bitcast_f2u
:
1588 case ir_unop_bitcast_i642d
:
1589 case ir_unop_bitcast_d2i64
:
1590 case ir_unop_bitcast_u642d
:
1591 case ir_unop_bitcast_d2u64
:
1592 case ir_unop_subroutine_to_int
:
1594 result
= nir_imov(&b
, srcs
[0]);
1596 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1597 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1598 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1599 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1600 case ir_unop_frexp_exp
: result
= nir_frexp_exp(&b
, srcs
[0]); break;
1601 case ir_unop_frexp_sig
: result
= nir_frexp_sig(&b
, srcs
[0]); break;
1602 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1603 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1604 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1605 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1606 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1607 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1608 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1609 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1610 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1611 case ir_unop_pack_snorm_2x16
:
1612 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1614 case ir_unop_pack_snorm_4x8
:
1615 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1617 case ir_unop_pack_unorm_2x16
:
1618 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1620 case ir_unop_pack_unorm_4x8
:
1621 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1623 case ir_unop_pack_half_2x16
:
1624 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1626 case ir_unop_unpack_snorm_2x16
:
1627 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1629 case ir_unop_unpack_snorm_4x8
:
1630 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1632 case ir_unop_unpack_unorm_2x16
:
1633 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1635 case ir_unop_unpack_unorm_4x8
:
1636 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1638 case ir_unop_unpack_half_2x16
:
1639 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1641 case ir_unop_pack_sampler_2x32
:
1642 case ir_unop_pack_image_2x32
:
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_sampler_2x32
:
1649 case ir_unop_unpack_image_2x32
:
1650 case ir_unop_unpack_double_2x32
:
1651 case ir_unop_unpack_int_2x32
:
1652 case ir_unop_unpack_uint_2x32
:
1653 result
= nir_unpack_64_2x32(&b
, srcs
[0]);
1655 case ir_unop_bitfield_reverse
:
1656 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1658 case ir_unop_bit_count
:
1659 result
= nir_bit_count(&b
, srcs
[0]);
1661 case ir_unop_find_msb
:
1663 case GLSL_TYPE_UINT
:
1664 result
= nir_ufind_msb(&b
, srcs
[0]);
1667 result
= nir_ifind_msb(&b
, srcs
[0]);
1670 unreachable("Invalid type for findMSB()");
1673 case ir_unop_find_lsb
:
1674 result
= nir_find_lsb(&b
, srcs
[0]);
1678 switch (ir
->type
->vector_elements
) {
1680 switch (ir
->operands
[0]->type
->vector_elements
) {
1681 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1682 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1683 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1684 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1685 default: unreachable("not reached");
1689 switch (ir
->operands
[0]->type
->vector_elements
) {
1690 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1691 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1692 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1693 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1694 default: unreachable("not reached");
1698 switch (ir
->operands
[0]->type
->vector_elements
) {
1699 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1700 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1701 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1702 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1703 default: unreachable("not reached");
1707 switch (ir
->operands
[0]->type
->vector_elements
) {
1708 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1709 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1710 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1711 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1712 default: unreachable("not reached");
1716 unreachable("not reached");
1719 case ir_unop_get_buffer_size
: {
1720 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1722 nir_intrinsic_get_buffer_size
);
1723 load
->num_components
= ir
->type
->vector_elements
;
1724 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1725 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1726 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1731 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1732 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1735 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1736 : nir_isub(&b
, srcs
[0], srcs
[1]);
1739 result
= type_is_float(out_type
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1740 : nir_imul(&b
, srcs
[0], srcs
[1]);
1743 if (type_is_float(out_type
))
1744 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1745 else if (type_is_signed(out_type
))
1746 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1748 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1751 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1752 : nir_umod(&b
, srcs
[0], srcs
[1]);
1755 if (type_is_float(out_type
))
1756 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1757 else if (type_is_signed(out_type
))
1758 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1760 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1763 if (type_is_float(out_type
))
1764 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1765 else if (type_is_signed(out_type
))
1766 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1768 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1770 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1771 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1772 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1773 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1774 case ir_binop_logic_and
:
1775 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1776 : nir_fand(&b
, srcs
[0], srcs
[1]);
1778 case ir_binop_logic_or
:
1779 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1780 : nir_for(&b
, srcs
[0], srcs
[1]);
1782 case ir_binop_logic_xor
:
1783 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1784 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1786 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1787 case ir_binop_rshift
:
1788 result
= (type_is_signed(out_type
)) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1789 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1791 case ir_binop_imul_high
:
1792 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1793 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1795 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1796 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1798 if (supports_ints
) {
1799 if (type_is_float(types
[0]))
1800 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1801 else if (type_is_signed(types
[0]))
1802 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1804 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1806 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1809 case ir_binop_gequal
:
1810 if (supports_ints
) {
1811 if (type_is_float(types
[0]))
1812 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1813 else if (type_is_signed(types
[0]))
1814 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1816 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1818 result
= nir_sge(&b
, srcs
[0], srcs
[1]);
1821 case ir_binop_equal
:
1822 if (supports_ints
) {
1823 if (type_is_float(types
[0]))
1824 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1826 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1828 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1831 case ir_binop_nequal
:
1832 if (supports_ints
) {
1833 if (type_is_float(types
[0]))
1834 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1836 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1838 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1841 case ir_binop_all_equal
:
1842 if (supports_ints
) {
1843 if (type_is_float(types
[0])) {
1844 switch (ir
->operands
[0]->type
->vector_elements
) {
1845 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1846 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1847 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1848 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1850 unreachable("not reached");
1853 switch (ir
->operands
[0]->type
->vector_elements
) {
1854 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1855 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1856 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1857 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1859 unreachable("not reached");
1863 switch (ir
->operands
[0]->type
->vector_elements
) {
1864 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1865 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1866 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1867 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1869 unreachable("not reached");
1873 case ir_binop_any_nequal
:
1874 if (supports_ints
) {
1875 if (type_is_float(types
[0])) {
1876 switch (ir
->operands
[0]->type
->vector_elements
) {
1877 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1878 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1879 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1880 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1882 unreachable("not reached");
1885 switch (ir
->operands
[0]->type
->vector_elements
) {
1886 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1887 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1888 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1889 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1891 unreachable("not reached");
1895 switch (ir
->operands
[0]->type
->vector_elements
) {
1896 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1897 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1898 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1899 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1901 unreachable("not reached");
1906 switch (ir
->operands
[0]->type
->vector_elements
) {
1907 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1908 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1909 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1911 unreachable("not reached");
1914 case ir_binop_vector_extract
: {
1915 result
= nir_channel(&b
, srcs
[0], 0);
1916 for (unsigned i
= 1; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1917 nir_ssa_def
*swizzled
= nir_channel(&b
, srcs
[0], i
);
1918 result
= nir_bcsel(&b
, nir_ieq(&b
, srcs
[1], nir_imm_int(&b
, i
)),
1924 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1926 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1929 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1933 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1935 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1937 case ir_triop_bitfield_extract
:
1938 result
= (out_type
== GLSL_TYPE_INT
) ?
1939 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1940 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1942 case ir_quadop_bitfield_insert
:
1943 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1945 case ir_quadop_vector
:
1946 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1950 unreachable("not reached");
1955 nir_visitor::visit(ir_swizzle
*ir
)
1957 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1958 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1959 ir
->type
->vector_elements
, !supports_ints
);
1963 nir_visitor::visit(ir_texture
*ir
)
1970 num_srcs
= 1; /* coordinate */
1975 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1976 num_srcs
= 2; /* coordinate, bias/lod */
1980 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1986 if (ir
->lod_info
.lod
!= NULL
)
1987 num_srcs
= 2; /* coordinate, lod */
1989 num_srcs
= 1; /* coordinate */
1993 op
= nir_texop_txf_ms
;
1994 num_srcs
= 2; /* coordinate, sample_index */
1999 if (ir
->lod_info
.lod
!= NULL
)
2000 num_srcs
= 1; /* lod */
2007 num_srcs
= 1; /* coordinate */
2012 num_srcs
= 1; /* coordinate */
2015 case ir_query_levels
:
2016 op
= nir_texop_query_levels
;
2020 case ir_texture_samples
:
2021 op
= nir_texop_texture_samples
;
2025 case ir_samples_identical
:
2026 op
= nir_texop_samples_identical
;
2027 num_srcs
= 1; /* coordinate */
2031 unreachable("not reached");
2034 if (ir
->projector
!= NULL
)
2036 if (ir
->shadow_comparator
!= NULL
)
2038 if (ir
->offset
!= NULL
)
2041 /* Add one for the texture deref */
2044 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
2047 instr
->sampler_dim
=
2048 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
2049 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
2050 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
2051 if (instr
->is_shadow
)
2052 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
2053 switch (ir
->type
->base_type
) {
2054 case GLSL_TYPE_FLOAT
:
2055 instr
->dest_type
= nir_type_float
;
2058 instr
->dest_type
= nir_type_int
;
2060 case GLSL_TYPE_BOOL
:
2061 case GLSL_TYPE_UINT
:
2062 instr
->dest_type
= nir_type_uint
;
2065 unreachable("not reached");
2068 nir_deref_instr
*sampler_deref
= evaluate_deref(ir
->sampler
);
2069 instr
->src
[0].src
= nir_src_for_ssa(&sampler_deref
->dest
.ssa
);
2070 instr
->src
[0].src_type
= nir_tex_src_texture_deref
;
2071 instr
->src
[1].src
= nir_src_for_ssa(&sampler_deref
->dest
.ssa
);
2072 instr
->src
[1].src_type
= nir_tex_src_sampler_deref
;
2074 unsigned src_number
= 2;
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
= nir_build_deref_var(&b
, var
);
2177 nir_visitor::visit(ir_dereference_variable
*ir
)
2179 struct hash_entry
*entry
=
2180 _mesa_hash_table_search(this->var_table
, ir
->var
);
2182 nir_variable
*var
= (nir_variable
*) entry
->data
;
2184 this->deref
= nir_build_deref_var(&b
, var
);
2188 nir_visitor::visit(ir_dereference_record
*ir
)
2190 ir
->record
->accept(this);
2192 int field_index
= ir
->field_idx
;
2193 assert(field_index
>= 0);
2195 this->deref
= nir_build_deref_struct(&b
, this->deref
, field_index
);
2199 nir_visitor::visit(ir_dereference_array
*ir
)
2201 nir_ssa_def
*index
= evaluate_rvalue(ir
->array_index
);
2203 ir
->array
->accept(this);
2205 this->deref
= nir_build_deref_array(&b
, this->deref
, index
);
2209 nir_visitor::visit(ir_barrier
*)
2211 nir_intrinsic_instr
*instr
=
2212 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2213 nir_builder_instr_insert(&b
, &instr
->instr
);