2 * Copyright © 2014 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 * Connor Abbott (cwabbott0@gmail.com)
28 #include "glsl_to_nir.h"
29 #include "ir_visitor.h"
30 #include "ir_hierarchical_visitor.h"
32 #include "compiler/nir/nir_control_flow.h"
33 #include "compiler/nir/nir_builder.h"
34 #include "main/imports.h"
37 * pass to lower GLSL IR to NIR
39 * This will lower variable dereferences to loads/stores of corresponding
40 * variables in NIR - the variables will be converted to registers in a later
46 class nir_visitor
: public ir_visitor
49 nir_visitor(nir_shader
*shader
);
52 virtual void visit(ir_variable
*);
53 virtual void visit(ir_function
*);
54 virtual void visit(ir_function_signature
*);
55 virtual void visit(ir_loop
*);
56 virtual void visit(ir_if
*);
57 virtual void visit(ir_discard
*);
58 virtual void visit(ir_loop_jump
*);
59 virtual void visit(ir_return
*);
60 virtual void visit(ir_call
*);
61 virtual void visit(ir_assignment
*);
62 virtual void visit(ir_emit_vertex
*);
63 virtual void visit(ir_end_primitive
*);
64 virtual void visit(ir_expression
*);
65 virtual void visit(ir_swizzle
*);
66 virtual void visit(ir_texture
*);
67 virtual void visit(ir_constant
*);
68 virtual void visit(ir_dereference_variable
*);
69 virtual void visit(ir_dereference_record
*);
70 virtual void visit(ir_dereference_array
*);
71 virtual void visit(ir_barrier
*);
73 void create_function(ir_function_signature
*ir
);
76 void add_instr(nir_instr
*instr
, unsigned num_components
, unsigned bit_size
);
77 nir_ssa_def
*evaluate_rvalue(ir_rvalue
*ir
);
79 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
**srcs
);
80 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
);
81 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
83 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
84 nir_ssa_def
*src2
, nir_ssa_def
*src3
);
89 nir_function_impl
*impl
;
91 nir_ssa_def
*result
; /* result of the expression tree last visited */
93 nir_deref_var
*evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
);
95 /* the head of the dereference chain we're creating */
96 nir_deref_var
*deref_head
;
97 /* the tail of the dereference chain we're creating */
98 nir_deref
*deref_tail
;
100 nir_variable
*var
; /* variable created by ir_variable visitor */
102 /* whether the IR we're operating on is per-function or global */
105 /* map of ir_variable -> nir_variable */
106 struct hash_table
*var_table
;
108 /* map of ir_function_signature -> nir_function_overload */
109 struct hash_table
*overload_table
;
113 * This visitor runs before the main visitor, calling create_function() for
114 * each function so that the main visitor can resolve forward references in
118 class nir_function_visitor
: public ir_hierarchical_visitor
121 nir_function_visitor(nir_visitor
*v
) : visitor(v
)
124 virtual ir_visitor_status
visit_enter(ir_function
*);
127 nir_visitor
*visitor
;
130 } /* end of anonymous namespace */
133 nir_remap_attributes(nir_shader
*shader
)
135 nir_foreach_variable(var
, &shader
->inputs
) {
136 var
->data
.location
+= _mesa_bitcount_64(shader
->info
.double_inputs_read
&
137 BITFIELD64_MASK(var
->data
.location
));
140 /* Once the remap is done, reset double_inputs_read, so later it will have
141 * which location/slots are doubles */
142 shader
->info
.double_inputs_read
= 0;
146 glsl_to_nir(const struct gl_shader_program
*shader_prog
,
147 gl_shader_stage stage
,
148 const nir_shader_compiler_options
*options
)
150 struct gl_linked_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
152 nir_shader
*shader
= nir_shader_create(NULL
, stage
, options
,
155 nir_visitor
v1(shader
);
156 nir_function_visitor
v2(&v1
);
158 visit_exec_list(sh
->ir
, &v1
);
160 nir_lower_constant_initializers(shader
, (nir_variable_mode
)~0);
162 /* Remap the locations to slots so those requiring two slots will occupy
163 * two locations. For instance, if we have in the IR code a dvec3 attr0 in
164 * location 0 and vec4 attr1 in location 1, in NIR attr0 will use
165 * locations/slots 0 and 1, and attr1 will use location/slot 2 */
166 if (shader
->info
.stage
== MESA_SHADER_VERTEX
)
167 nir_remap_attributes(shader
);
169 shader
->info
.name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
170 if (shader_prog
->Label
)
171 shader
->info
.label
= ralloc_strdup(shader
, shader_prog
->Label
);
173 /* Check for transform feedback varyings specified via the API */
174 shader
->info
.has_transform_feedback_varyings
=
175 shader_prog
->TransformFeedback
.NumVarying
> 0;
177 /* Check for transform feedback varyings specified in the Shader */
178 if (shader_prog
->last_vert_prog
)
179 shader
->info
.has_transform_feedback_varyings
|=
180 shader_prog
->last_vert_prog
->sh
.LinkedTransformFeedback
->NumVarying
> 0;
185 nir_visitor::nir_visitor(nir_shader
*shader
)
187 this->supports_ints
= shader
->options
->native_integers
;
188 this->shader
= shader
;
189 this->is_global
= true;
190 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
191 _mesa_key_pointer_equal
);
192 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
193 _mesa_key_pointer_equal
);
197 this->deref_head
= NULL
;
198 this->deref_tail
= NULL
;
199 memset(&this->b
, 0, sizeof(this->b
));
202 nir_visitor::~nir_visitor()
204 _mesa_hash_table_destroy(this->var_table
, NULL
);
205 _mesa_hash_table_destroy(this->overload_table
, NULL
);
209 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
212 ralloc_steal(mem_ctx
, this->deref_head
);
213 return this->deref_head
;
216 static nir_constant
*
217 constant_copy(ir_constant
*ir
, void *mem_ctx
)
222 nir_constant
*ret
= rzalloc(mem_ctx
, nir_constant
);
224 const unsigned rows
= ir
->type
->vector_elements
;
225 const unsigned cols
= ir
->type
->matrix_columns
;
228 ret
->num_elements
= 0;
229 switch (ir
->type
->base_type
) {
231 /* Only float base types can be matrices. */
234 for (unsigned r
= 0; r
< rows
; r
++)
235 ret
->values
[0].u32
[r
] = ir
->value
.u
[r
];
240 /* Only float base types can be matrices. */
243 for (unsigned r
= 0; r
< rows
; r
++)
244 ret
->values
[0].i32
[r
] = ir
->value
.i
[r
];
248 case GLSL_TYPE_FLOAT
:
249 for (unsigned c
= 0; c
< cols
; c
++) {
250 for (unsigned r
= 0; r
< rows
; r
++)
251 ret
->values
[c
].f32
[r
] = ir
->value
.f
[c
* rows
+ r
];
255 case GLSL_TYPE_DOUBLE
:
256 for (unsigned c
= 0; c
< cols
; c
++) {
257 for (unsigned r
= 0; r
< rows
; r
++)
258 ret
->values
[c
].f64
[r
] = ir
->value
.d
[c
* rows
+ r
];
262 case GLSL_TYPE_UINT64
:
263 /* Only float base types can be matrices. */
266 for (unsigned r
= 0; r
< rows
; r
++)
267 ret
->values
[0].u64
[r
] = ir
->value
.u64
[r
];
270 case GLSL_TYPE_INT64
:
271 /* Only float base types can be matrices. */
274 for (unsigned r
= 0; r
< rows
; r
++)
275 ret
->values
[0].i64
[r
] = ir
->value
.i64
[r
];
279 /* Only float base types can be matrices. */
282 for (unsigned r
= 0; r
< rows
; r
++)
283 ret
->values
[0].u32
[r
] = ir
->value
.b
[r
] ? NIR_TRUE
: NIR_FALSE
;
287 case GLSL_TYPE_STRUCT
:
288 case GLSL_TYPE_ARRAY
:
289 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
291 ret
->num_elements
= ir
->type
->length
;
293 for (i
= 0; i
< ir
->type
->length
; i
++)
294 ret
->elements
[i
] = constant_copy(ir
->const_elements
[i
], mem_ctx
);
298 unreachable("not reached");
305 nir_visitor::visit(ir_variable
*ir
)
307 /* TODO: In future we should switch to using the NIR lowering pass but for
308 * now just ignore these variables as GLSL IR should have lowered them.
309 * Anything remaining are just dead vars that weren't cleaned up.
311 if (ir
->data
.mode
== ir_var_shader_shared
)
314 nir_variable
*var
= rzalloc(shader
, nir_variable
);
315 var
->type
= ir
->type
;
316 var
->name
= ralloc_strdup(var
, ir
->name
);
318 var
->data
.always_active_io
= ir
->data
.always_active_io
;
319 var
->data
.read_only
= ir
->data
.read_only
;
320 var
->data
.centroid
= ir
->data
.centroid
;
321 var
->data
.sample
= ir
->data
.sample
;
322 var
->data
.patch
= ir
->data
.patch
;
323 var
->data
.invariant
= ir
->data
.invariant
;
324 var
->data
.location
= ir
->data
.location
;
325 var
->data
.stream
= ir
->data
.stream
;
326 var
->data
.compact
= false;
328 switch(ir
->data
.mode
) {
330 case ir_var_temporary
:
332 var
->data
.mode
= nir_var_global
;
334 var
->data
.mode
= nir_var_local
;
337 case ir_var_function_in
:
338 case ir_var_function_out
:
339 case ir_var_function_inout
:
340 case ir_var_const_in
:
341 var
->data
.mode
= nir_var_local
;
344 case ir_var_shader_in
:
345 if (shader
->info
.stage
== MESA_SHADER_FRAGMENT
&&
346 ir
->data
.location
== VARYING_SLOT_FACE
) {
347 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
348 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
349 var
->data
.mode
= nir_var_system_value
;
350 } else if (shader
->info
.stage
== MESA_SHADER_GEOMETRY
&&
351 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
352 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
353 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
354 var
->data
.mode
= nir_var_system_value
;
356 var
->data
.mode
= nir_var_shader_in
;
358 if (shader
->info
.stage
== MESA_SHADER_TESS_EVAL
&&
359 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
360 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
361 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
365 /* Mark all the locations that require two slots */
366 if (glsl_type_is_dual_slot(glsl_without_array(var
->type
))) {
367 for (uint i
= 0; i
< glsl_count_attribute_slots(var
->type
, true); i
++) {
368 uint64_t bitfield
= BITFIELD64_BIT(var
->data
.location
+ i
);
369 shader
->info
.double_inputs_read
|= bitfield
;
374 case ir_var_shader_out
:
375 var
->data
.mode
= nir_var_shader_out
;
376 if (shader
->info
.stage
== MESA_SHADER_TESS_CTRL
&&
377 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
378 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
379 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
384 var
->data
.mode
= nir_var_uniform
;
387 case ir_var_shader_storage
:
388 var
->data
.mode
= nir_var_shader_storage
;
391 case ir_var_system_value
:
392 var
->data
.mode
= nir_var_system_value
;
396 unreachable("not reached");
399 var
->data
.interpolation
= ir
->data
.interpolation
;
400 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
401 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
402 var
->data
.location_frac
= ir
->data
.location_frac
;
404 switch (ir
->data
.depth_layout
) {
405 case ir_depth_layout_none
:
406 var
->data
.depth_layout
= nir_depth_layout_none
;
408 case ir_depth_layout_any
:
409 var
->data
.depth_layout
= nir_depth_layout_any
;
411 case ir_depth_layout_greater
:
412 var
->data
.depth_layout
= nir_depth_layout_greater
;
414 case ir_depth_layout_less
:
415 var
->data
.depth_layout
= nir_depth_layout_less
;
417 case ir_depth_layout_unchanged
:
418 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
421 unreachable("not reached");
424 var
->data
.index
= ir
->data
.index
;
425 var
->data
.descriptor_set
= 0;
426 var
->data
.binding
= ir
->data
.binding
;
427 var
->data
.offset
= ir
->data
.offset
;
428 var
->data
.image
.read_only
= ir
->data
.memory_read_only
;
429 var
->data
.image
.write_only
= ir
->data
.memory_write_only
;
430 var
->data
.image
.coherent
= ir
->data
.memory_coherent
;
431 var
->data
.image
._volatile
= ir
->data
.memory_volatile
;
432 var
->data
.image
.restrict_flag
= ir
->data
.memory_restrict
;
433 var
->data
.image
.format
= ir
->data
.image_format
;
434 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
436 var
->num_state_slots
= ir
->get_num_state_slots();
437 if (var
->num_state_slots
> 0) {
438 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
439 var
->num_state_slots
);
441 ir_state_slot
*state_slots
= ir
->get_state_slots();
442 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
443 for (unsigned j
= 0; j
< 5; j
++)
444 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
445 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
448 var
->state_slots
= NULL
;
451 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
453 var
->interface_type
= ir
->get_interface_type();
455 if (var
->data
.mode
== nir_var_local
)
456 nir_function_impl_add_variable(impl
, var
);
458 nir_shader_add_variable(shader
, var
);
460 _mesa_hash_table_insert(var_table
, ir
, var
);
465 nir_function_visitor::visit_enter(ir_function
*ir
)
467 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
468 visitor
->create_function(sig
);
470 return visit_continue_with_parent
;
474 nir_visitor::create_function(ir_function_signature
*ir
)
476 if (ir
->is_intrinsic())
479 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
481 assert(ir
->parameters
.is_empty());
482 assert(ir
->return_type
== glsl_type::void_type
);
484 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
488 nir_visitor::visit(ir_function
*ir
)
490 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
495 nir_visitor::visit(ir_function_signature
*ir
)
497 if (ir
->is_intrinsic())
500 struct hash_entry
*entry
=
501 _mesa_hash_table_search(this->overload_table
, ir
);
504 nir_function
*func
= (nir_function
*) entry
->data
;
506 if (ir
->is_defined
) {
507 nir_function_impl
*impl
= nir_function_impl_create(func
);
510 assert(strcmp(func
->name
, "main") == 0);
511 assert(ir
->parameters
.is_empty());
512 assert(func
->return_type
== glsl_type::void_type
);
514 this->is_global
= false;
516 nir_builder_init(&b
, impl
);
517 b
.cursor
= nir_after_cf_list(&impl
->body
);
518 visit_exec_list(&ir
->body
, this);
520 this->is_global
= true;
527 nir_visitor::visit(ir_loop
*ir
)
530 visit_exec_list(&ir
->body_instructions
, this);
531 nir_pop_loop(&b
, NULL
);
535 nir_visitor::visit(ir_if
*ir
)
537 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
538 visit_exec_list(&ir
->then_instructions
, this);
539 nir_push_else(&b
, NULL
);
540 visit_exec_list(&ir
->else_instructions
, this);
541 nir_pop_if(&b
, NULL
);
545 nir_visitor::visit(ir_discard
*ir
)
548 * discards aren't treated as control flow, because before we lower them
549 * they can appear anywhere in the shader and the stuff after them may still
550 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
551 * discards will be immediately followed by a return.
554 nir_intrinsic_instr
*discard
;
556 discard
= nir_intrinsic_instr_create(this->shader
,
557 nir_intrinsic_discard_if
);
559 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
561 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
564 nir_builder_instr_insert(&b
, &discard
->instr
);
568 nir_visitor::visit(ir_emit_vertex
*ir
)
570 nir_intrinsic_instr
*instr
=
571 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
572 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
573 nir_builder_instr_insert(&b
, &instr
->instr
);
577 nir_visitor::visit(ir_end_primitive
*ir
)
579 nir_intrinsic_instr
*instr
=
580 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
581 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
582 nir_builder_instr_insert(&b
, &instr
->instr
);
586 nir_visitor::visit(ir_loop_jump
*ir
)
590 case ir_loop_jump::jump_break
:
591 type
= nir_jump_break
;
593 case ir_loop_jump::jump_continue
:
594 type
= nir_jump_continue
;
597 unreachable("not reached");
600 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
601 nir_builder_instr_insert(&b
, &instr
->instr
);
605 nir_visitor::visit(ir_return
*ir
)
607 if (ir
->value
!= NULL
) {
608 nir_intrinsic_instr
*copy
=
609 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
611 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
612 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
615 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
616 nir_builder_instr_insert(&b
, &instr
->instr
);
620 nir_visitor::visit(ir_call
*ir
)
622 if (ir
->callee
->is_intrinsic()) {
625 switch (ir
->callee
->intrinsic_id
) {
626 case ir_intrinsic_atomic_counter_read
:
627 op
= nir_intrinsic_atomic_counter_read_var
;
629 case ir_intrinsic_atomic_counter_increment
:
630 op
= nir_intrinsic_atomic_counter_inc_var
;
632 case ir_intrinsic_atomic_counter_predecrement
:
633 op
= nir_intrinsic_atomic_counter_dec_var
;
635 case ir_intrinsic_atomic_counter_add
:
636 op
= nir_intrinsic_atomic_counter_add_var
;
638 case ir_intrinsic_atomic_counter_and
:
639 op
= nir_intrinsic_atomic_counter_and_var
;
641 case ir_intrinsic_atomic_counter_or
:
642 op
= nir_intrinsic_atomic_counter_or_var
;
644 case ir_intrinsic_atomic_counter_xor
:
645 op
= nir_intrinsic_atomic_counter_xor_var
;
647 case ir_intrinsic_atomic_counter_min
:
648 op
= nir_intrinsic_atomic_counter_min_var
;
650 case ir_intrinsic_atomic_counter_max
:
651 op
= nir_intrinsic_atomic_counter_max_var
;
653 case ir_intrinsic_atomic_counter_exchange
:
654 op
= nir_intrinsic_atomic_counter_exchange_var
;
656 case ir_intrinsic_atomic_counter_comp_swap
:
657 op
= nir_intrinsic_atomic_counter_comp_swap_var
;
659 case ir_intrinsic_image_load
:
660 op
= nir_intrinsic_image_load
;
662 case ir_intrinsic_image_store
:
663 op
= nir_intrinsic_image_store
;
665 case ir_intrinsic_image_atomic_add
:
666 op
= nir_intrinsic_image_atomic_add
;
668 case ir_intrinsic_image_atomic_min
:
669 op
= nir_intrinsic_image_atomic_min
;
671 case ir_intrinsic_image_atomic_max
:
672 op
= nir_intrinsic_image_atomic_max
;
674 case ir_intrinsic_image_atomic_and
:
675 op
= nir_intrinsic_image_atomic_and
;
677 case ir_intrinsic_image_atomic_or
:
678 op
= nir_intrinsic_image_atomic_or
;
680 case ir_intrinsic_image_atomic_xor
:
681 op
= nir_intrinsic_image_atomic_xor
;
683 case ir_intrinsic_image_atomic_exchange
:
684 op
= nir_intrinsic_image_atomic_exchange
;
686 case ir_intrinsic_image_atomic_comp_swap
:
687 op
= nir_intrinsic_image_atomic_comp_swap
;
689 case ir_intrinsic_memory_barrier
:
690 op
= nir_intrinsic_memory_barrier
;
692 case ir_intrinsic_image_size
:
693 op
= nir_intrinsic_image_size
;
695 case ir_intrinsic_image_samples
:
696 op
= nir_intrinsic_image_samples
;
698 case ir_intrinsic_ssbo_store
:
699 op
= nir_intrinsic_store_ssbo
;
701 case ir_intrinsic_ssbo_load
:
702 op
= nir_intrinsic_load_ssbo
;
704 case ir_intrinsic_ssbo_atomic_add
:
705 op
= nir_intrinsic_ssbo_atomic_add
;
707 case ir_intrinsic_ssbo_atomic_and
:
708 op
= nir_intrinsic_ssbo_atomic_and
;
710 case ir_intrinsic_ssbo_atomic_or
:
711 op
= nir_intrinsic_ssbo_atomic_or
;
713 case ir_intrinsic_ssbo_atomic_xor
:
714 op
= nir_intrinsic_ssbo_atomic_xor
;
716 case ir_intrinsic_ssbo_atomic_min
:
717 assert(ir
->return_deref
);
718 if (ir
->return_deref
->type
== glsl_type::int_type
)
719 op
= nir_intrinsic_ssbo_atomic_imin
;
720 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
721 op
= nir_intrinsic_ssbo_atomic_umin
;
723 unreachable("Invalid type");
725 case ir_intrinsic_ssbo_atomic_max
:
726 assert(ir
->return_deref
);
727 if (ir
->return_deref
->type
== glsl_type::int_type
)
728 op
= nir_intrinsic_ssbo_atomic_imax
;
729 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
730 op
= nir_intrinsic_ssbo_atomic_umax
;
732 unreachable("Invalid type");
734 case ir_intrinsic_ssbo_atomic_exchange
:
735 op
= nir_intrinsic_ssbo_atomic_exchange
;
737 case ir_intrinsic_ssbo_atomic_comp_swap
:
738 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
740 case ir_intrinsic_shader_clock
:
741 op
= nir_intrinsic_shader_clock
;
743 case ir_intrinsic_group_memory_barrier
:
744 op
= nir_intrinsic_group_memory_barrier
;
746 case ir_intrinsic_memory_barrier_atomic_counter
:
747 op
= nir_intrinsic_memory_barrier_atomic_counter
;
749 case ir_intrinsic_memory_barrier_buffer
:
750 op
= nir_intrinsic_memory_barrier_buffer
;
752 case ir_intrinsic_memory_barrier_image
:
753 op
= nir_intrinsic_memory_barrier_image
;
755 case ir_intrinsic_memory_barrier_shared
:
756 op
= nir_intrinsic_memory_barrier_shared
;
758 case ir_intrinsic_shared_load
:
759 op
= nir_intrinsic_load_shared
;
761 case ir_intrinsic_shared_store
:
762 op
= nir_intrinsic_store_shared
;
764 case ir_intrinsic_shared_atomic_add
:
765 op
= nir_intrinsic_shared_atomic_add
;
767 case ir_intrinsic_shared_atomic_and
:
768 op
= nir_intrinsic_shared_atomic_and
;
770 case ir_intrinsic_shared_atomic_or
:
771 op
= nir_intrinsic_shared_atomic_or
;
773 case ir_intrinsic_shared_atomic_xor
:
774 op
= nir_intrinsic_shared_atomic_xor
;
776 case ir_intrinsic_shared_atomic_min
:
777 assert(ir
->return_deref
);
778 if (ir
->return_deref
->type
== glsl_type::int_type
)
779 op
= nir_intrinsic_shared_atomic_imin
;
780 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
781 op
= nir_intrinsic_shared_atomic_umin
;
783 unreachable("Invalid type");
785 case ir_intrinsic_shared_atomic_max
:
786 assert(ir
->return_deref
);
787 if (ir
->return_deref
->type
== glsl_type::int_type
)
788 op
= nir_intrinsic_shared_atomic_imax
;
789 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
790 op
= nir_intrinsic_shared_atomic_umax
;
792 unreachable("Invalid type");
794 case ir_intrinsic_shared_atomic_exchange
:
795 op
= nir_intrinsic_shared_atomic_exchange
;
797 case ir_intrinsic_shared_atomic_comp_swap
:
798 op
= nir_intrinsic_shared_atomic_comp_swap
;
800 case ir_intrinsic_vote_any
:
801 op
= nir_intrinsic_vote_any
;
803 case ir_intrinsic_vote_all
:
804 op
= nir_intrinsic_vote_all
;
806 case ir_intrinsic_vote_eq
:
807 op
= nir_intrinsic_vote_eq
;
809 case ir_intrinsic_ballot
:
810 op
= nir_intrinsic_ballot
;
812 case ir_intrinsic_read_invocation
:
813 op
= nir_intrinsic_read_invocation
;
815 case ir_intrinsic_read_first_invocation
:
816 op
= nir_intrinsic_read_first_invocation
;
819 unreachable("not reached");
822 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
823 nir_dest
*dest
= &instr
->dest
;
826 case nir_intrinsic_atomic_counter_read_var
:
827 case nir_intrinsic_atomic_counter_inc_var
:
828 case nir_intrinsic_atomic_counter_dec_var
:
829 case nir_intrinsic_atomic_counter_add_var
:
830 case nir_intrinsic_atomic_counter_min_var
:
831 case nir_intrinsic_atomic_counter_max_var
:
832 case nir_intrinsic_atomic_counter_and_var
:
833 case nir_intrinsic_atomic_counter_or_var
:
834 case nir_intrinsic_atomic_counter_xor_var
:
835 case nir_intrinsic_atomic_counter_exchange_var
:
836 case nir_intrinsic_atomic_counter_comp_swap_var
: {
837 /* Set the counter variable dereference. */
838 exec_node
*param
= ir
->actual_parameters
.get_head();
839 ir_dereference
*counter
= (ir_dereference
*)param
;
841 instr
->variables
[0] = evaluate_deref(&instr
->instr
, counter
);
842 param
= param
->get_next();
844 /* Set the intrinsic destination. */
845 if (ir
->return_deref
) {
846 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
849 /* Set the intrinsic parameters. */
850 if (!param
->is_tail_sentinel()) {
852 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
853 param
= param
->get_next();
856 if (!param
->is_tail_sentinel()) {
858 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
859 param
= param
->get_next();
862 nir_builder_instr_insert(&b
, &instr
->instr
);
865 case nir_intrinsic_image_load
:
866 case nir_intrinsic_image_store
:
867 case nir_intrinsic_image_atomic_add
:
868 case nir_intrinsic_image_atomic_min
:
869 case nir_intrinsic_image_atomic_max
:
870 case nir_intrinsic_image_atomic_and
:
871 case nir_intrinsic_image_atomic_or
:
872 case nir_intrinsic_image_atomic_xor
:
873 case nir_intrinsic_image_atomic_exchange
:
874 case nir_intrinsic_image_atomic_comp_swap
:
875 case nir_intrinsic_image_samples
:
876 case nir_intrinsic_image_size
: {
877 nir_ssa_undef_instr
*instr_undef
=
878 nir_ssa_undef_instr_create(shader
, 1, 32);
879 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
881 /* Set the image variable dereference. */
882 exec_node
*param
= ir
->actual_parameters
.get_head();
883 ir_dereference
*image
= (ir_dereference
*)param
;
884 const glsl_type
*type
=
885 image
->variable_referenced()->type
->without_array();
887 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
888 param
= param
->get_next();
890 /* Set the intrinsic destination. */
891 if (ir
->return_deref
) {
892 unsigned num_components
= ir
->return_deref
->type
->vector_elements
;
893 if (instr
->intrinsic
== nir_intrinsic_image_size
)
894 instr
->num_components
= num_components
;
895 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
896 num_components
, 32, NULL
);
899 if (op
== nir_intrinsic_image_size
||
900 op
== nir_intrinsic_image_samples
) {
901 nir_builder_instr_insert(&b
, &instr
->instr
);
905 /* Set the address argument, extending the coordinate vector to four
908 nir_ssa_def
*src_addr
=
909 evaluate_rvalue((ir_dereference
*)param
);
910 nir_ssa_def
*srcs
[4];
912 for (int i
= 0; i
< 4; i
++) {
913 if (i
< type
->coordinate_components())
914 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
916 srcs
[i
] = &instr_undef
->def
;
919 instr
->src
[0] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
920 param
= param
->get_next();
922 /* Set the sample argument, which is undefined for single-sample
925 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
927 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
928 param
= param
->get_next();
930 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
933 /* Set the intrinsic parameters. */
934 if (!param
->is_tail_sentinel()) {
936 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
937 param
= param
->get_next();
940 if (!param
->is_tail_sentinel()) {
942 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
943 param
= param
->get_next();
945 nir_builder_instr_insert(&b
, &instr
->instr
);
948 case nir_intrinsic_memory_barrier
:
949 case nir_intrinsic_group_memory_barrier
:
950 case nir_intrinsic_memory_barrier_atomic_counter
:
951 case nir_intrinsic_memory_barrier_buffer
:
952 case nir_intrinsic_memory_barrier_image
:
953 case nir_intrinsic_memory_barrier_shared
:
954 nir_builder_instr_insert(&b
, &instr
->instr
);
956 case nir_intrinsic_shader_clock
:
957 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 2, 32, NULL
);
958 instr
->num_components
= 2;
959 nir_builder_instr_insert(&b
, &instr
->instr
);
961 case nir_intrinsic_store_ssbo
: {
962 exec_node
*param
= ir
->actual_parameters
.get_head();
963 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
965 param
= param
->get_next();
966 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
968 param
= param
->get_next();
969 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
971 param
= param
->get_next();
972 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
975 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
976 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
977 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
978 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
979 instr
->num_components
= val
->type
->vector_elements
;
981 nir_builder_instr_insert(&b
, &instr
->instr
);
984 case nir_intrinsic_load_ssbo
: {
985 exec_node
*param
= ir
->actual_parameters
.get_head();
986 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
988 param
= param
->get_next();
989 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
991 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
992 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
994 const glsl_type
*type
= ir
->return_deref
->var
->type
;
995 instr
->num_components
= type
->vector_elements
;
997 /* Setup destination register */
998 unsigned bit_size
= glsl_get_bit_size(type
);
999 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1000 type
->vector_elements
, bit_size
, NULL
);
1002 /* Insert the created nir instruction now since in the case of boolean
1003 * result we will need to emit another instruction after it
1005 nir_builder_instr_insert(&b
, &instr
->instr
);
1008 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
1009 * consider a true boolean to be ~0. Fix this up with a != 0
1012 if (type
->is_boolean()) {
1013 nir_alu_instr
*load_ssbo_compare
=
1014 nir_alu_instr_create(shader
, nir_op_ine
);
1015 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
1016 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
1017 load_ssbo_compare
->src
[1].src
=
1018 nir_src_for_ssa(nir_imm_int(&b
, 0));
1019 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
1020 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
1021 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
1022 &load_ssbo_compare
->dest
.dest
,
1023 type
->vector_elements
, bit_size
, NULL
);
1024 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
1025 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
1026 dest
= &load_ssbo_compare
->dest
.dest
;
1030 case nir_intrinsic_ssbo_atomic_add
:
1031 case nir_intrinsic_ssbo_atomic_imin
:
1032 case nir_intrinsic_ssbo_atomic_umin
:
1033 case nir_intrinsic_ssbo_atomic_imax
:
1034 case nir_intrinsic_ssbo_atomic_umax
:
1035 case nir_intrinsic_ssbo_atomic_and
:
1036 case nir_intrinsic_ssbo_atomic_or
:
1037 case nir_intrinsic_ssbo_atomic_xor
:
1038 case nir_intrinsic_ssbo_atomic_exchange
:
1039 case nir_intrinsic_ssbo_atomic_comp_swap
: {
1040 int param_count
= ir
->actual_parameters
.length();
1041 assert(param_count
== 3 || param_count
== 4);
1044 exec_node
*param
= ir
->actual_parameters
.get_head();
1045 ir_instruction
*inst
= (ir_instruction
*) param
;
1046 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1049 param
= param
->get_next();
1050 inst
= (ir_instruction
*) param
;
1051 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1053 /* data1 parameter (this is always present) */
1054 param
= param
->get_next();
1055 inst
= (ir_instruction
*) param
;
1056 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1058 /* data2 parameter (only with atomic_comp_swap) */
1059 if (param_count
== 4) {
1060 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
1061 param
= param
->get_next();
1062 inst
= (ir_instruction
*) param
;
1063 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1067 assert(ir
->return_deref
);
1068 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1069 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1070 nir_builder_instr_insert(&b
, &instr
->instr
);
1073 case nir_intrinsic_load_shared
: {
1074 exec_node
*param
= ir
->actual_parameters
.get_head();
1075 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1077 nir_intrinsic_set_base(instr
, 0);
1078 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1080 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1081 instr
->num_components
= type
->vector_elements
;
1083 /* Setup destination register */
1084 unsigned bit_size
= glsl_get_bit_size(type
);
1085 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1086 type
->vector_elements
, bit_size
, NULL
);
1088 nir_builder_instr_insert(&b
, &instr
->instr
);
1091 case nir_intrinsic_store_shared
: {
1092 exec_node
*param
= ir
->actual_parameters
.get_head();
1093 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1095 param
= param
->get_next();
1096 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1098 param
= param
->get_next();
1099 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1102 nir_intrinsic_set_base(instr
, 0);
1103 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1105 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1107 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1108 instr
->num_components
= val
->type
->vector_elements
;
1110 nir_builder_instr_insert(&b
, &instr
->instr
);
1113 case nir_intrinsic_shared_atomic_add
:
1114 case nir_intrinsic_shared_atomic_imin
:
1115 case nir_intrinsic_shared_atomic_umin
:
1116 case nir_intrinsic_shared_atomic_imax
:
1117 case nir_intrinsic_shared_atomic_umax
:
1118 case nir_intrinsic_shared_atomic_and
:
1119 case nir_intrinsic_shared_atomic_or
:
1120 case nir_intrinsic_shared_atomic_xor
:
1121 case nir_intrinsic_shared_atomic_exchange
:
1122 case nir_intrinsic_shared_atomic_comp_swap
: {
1123 int param_count
= ir
->actual_parameters
.length();
1124 assert(param_count
== 2 || param_count
== 3);
1127 exec_node
*param
= ir
->actual_parameters
.get_head();
1128 ir_instruction
*inst
= (ir_instruction
*) param
;
1129 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1131 /* data1 parameter (this is always present) */
1132 param
= param
->get_next();
1133 inst
= (ir_instruction
*) param
;
1134 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1136 /* data2 parameter (only with atomic_comp_swap) */
1137 if (param_count
== 3) {
1138 assert(op
== nir_intrinsic_shared_atomic_comp_swap
);
1139 param
= param
->get_next();
1140 inst
= (ir_instruction
*) param
;
1142 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1146 assert(ir
->return_deref
);
1147 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1148 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1149 ir
->return_deref
->type
->vector_elements
,
1151 nir_builder_instr_insert(&b
, &instr
->instr
);
1154 case nir_intrinsic_vote_any
:
1155 case nir_intrinsic_vote_all
:
1156 case nir_intrinsic_vote_eq
: {
1157 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
1159 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1160 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1162 nir_builder_instr_insert(&b
, &instr
->instr
);
1166 case nir_intrinsic_ballot
: {
1167 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1168 ir
->return_deref
->type
->vector_elements
, 64, NULL
);
1169 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
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
);
1177 case nir_intrinsic_read_invocation
: {
1178 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1179 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1180 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1182 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1183 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1185 ir_rvalue
*invocation
= (ir_rvalue
*) ir
->actual_parameters
.get_head()->next
;
1186 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(invocation
));
1188 nir_builder_instr_insert(&b
, &instr
->instr
);
1191 case nir_intrinsic_read_first_invocation
: {
1192 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1193 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1194 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1196 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1197 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1199 nir_builder_instr_insert(&b
, &instr
->instr
);
1203 unreachable("not reached");
1206 if (ir
->return_deref
) {
1207 nir_intrinsic_instr
*store_instr
=
1208 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
1209 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1210 nir_intrinsic_set_write_mask(store_instr
,
1211 (1 << store_instr
->num_components
) - 1);
1213 store_instr
->variables
[0] =
1214 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
1215 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
1217 nir_builder_instr_insert(&b
, &store_instr
->instr
);
1223 struct hash_entry
*entry
=
1224 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1226 nir_function
*callee
= (nir_function
*) entry
->data
;
1228 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
1231 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
1232 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
1236 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
1237 nir_builder_instr_insert(&b
, &instr
->instr
);
1241 nir_visitor::visit(ir_assignment
*ir
)
1243 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1245 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1246 ir
->lhs
->variable_referenced()->data
.precise
;
1248 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1249 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1250 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1251 nir_intrinsic_instr
*copy
=
1252 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1254 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1255 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1257 if (ir
->condition
) {
1258 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1259 nir_builder_instr_insert(&b
, ©
->instr
);
1260 nir_pop_if(&b
, NULL
);
1262 nir_builder_instr_insert(&b
, ©
->instr
);
1267 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1269 ir
->lhs
->accept(this);
1270 nir_deref_var
*lhs_deref
= this->deref_head
;
1271 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1273 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1274 /* GLSL IR will give us the input to the write-masked assignment in a
1275 * single packed vector. So, for example, if the writemask is xzw, then
1276 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1280 unsigned component
= 0;
1281 for (unsigned i
= 0; i
< 4; i
++) {
1282 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1284 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1287 nir_intrinsic_instr
*store
=
1288 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1289 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1290 nir_intrinsic_set_write_mask(store
, ir
->write_mask
);
1291 store
->variables
[0] = nir_deref_var_clone(lhs_deref
, store
);
1292 store
->src
[0] = nir_src_for_ssa(src
);
1294 if (ir
->condition
) {
1295 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1296 nir_builder_instr_insert(&b
, &store
->instr
);
1297 nir_pop_if(&b
, NULL
);
1299 nir_builder_instr_insert(&b
, &store
->instr
);
1304 * Given an instruction, returns a pointer to its destination or NULL if there
1305 * is no destination.
1307 * Note that this only handles instructions we generate at this level.
1310 get_instr_dest(nir_instr
*instr
)
1312 nir_alu_instr
*alu_instr
;
1313 nir_intrinsic_instr
*intrinsic_instr
;
1314 nir_tex_instr
*tex_instr
;
1316 switch (instr
->type
) {
1317 case nir_instr_type_alu
:
1318 alu_instr
= nir_instr_as_alu(instr
);
1319 return &alu_instr
->dest
.dest
;
1321 case nir_instr_type_intrinsic
:
1322 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1323 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1324 return &intrinsic_instr
->dest
;
1328 case nir_instr_type_tex
:
1329 tex_instr
= nir_instr_as_tex(instr
);
1330 return &tex_instr
->dest
;
1333 unreachable("not reached");
1340 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1343 nir_dest
*dest
= get_instr_dest(instr
);
1346 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1348 nir_builder_instr_insert(&b
, instr
);
1351 assert(dest
->is_ssa
);
1352 this->result
= &dest
->ssa
;
1357 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1360 if (ir
->as_dereference() || ir
->as_constant()) {
1362 * A dereference is being used on the right hand side, which means we
1363 * must emit a variable load.
1366 nir_intrinsic_instr
*load_instr
=
1367 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1368 load_instr
->num_components
= ir
->type
->vector_elements
;
1369 load_instr
->variables
[0] = this->deref_head
;
1370 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1371 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1372 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
, bit_size
);
1375 return this->result
;
1379 type_is_float(glsl_base_type type
)
1381 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
||
1382 type
== GLSL_TYPE_FLOAT16
;
1386 type_is_signed(glsl_base_type type
)
1388 return type
== GLSL_TYPE_INT
|| type
== GLSL_TYPE_INT64
||
1389 type
== GLSL_TYPE_INT16
;
1393 nir_visitor::visit(ir_expression
*ir
)
1395 /* Some special cases */
1396 switch (ir
->operation
) {
1397 case ir_binop_ubo_load
: {
1398 nir_intrinsic_instr
*load
=
1399 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1400 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1401 load
->num_components
= ir
->type
->vector_elements
;
1402 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1403 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1404 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1407 * In UBO's, a true boolean value is any non-zero value, but we consider
1408 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1411 if (ir
->type
->is_boolean())
1412 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1417 case ir_unop_interpolate_at_centroid
:
1418 case ir_binop_interpolate_at_offset
:
1419 case ir_binop_interpolate_at_sample
: {
1420 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1421 ir_swizzle
*swizzle
= NULL
;
1423 /* the api does not allow a swizzle here, but the varying packing code
1424 * may have pushed one into here.
1426 swizzle
= ir
->operands
[0]->as_swizzle();
1428 deref
= swizzle
->val
->as_dereference();
1432 deref
->accept(this);
1434 nir_intrinsic_op op
;
1435 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1436 switch (ir
->operation
) {
1437 case ir_unop_interpolate_at_centroid
:
1438 op
= nir_intrinsic_interp_var_at_centroid
;
1440 case ir_binop_interpolate_at_offset
:
1441 op
= nir_intrinsic_interp_var_at_offset
;
1443 case ir_binop_interpolate_at_sample
:
1444 op
= nir_intrinsic_interp_var_at_sample
;
1447 unreachable("Invalid interpolation intrinsic");
1450 /* This case can happen if the vertex shader does not write the
1451 * given varying. In this case, the linker will lower it to a
1452 * global variable. Since interpolating a variable makes no
1453 * sense, we'll just turn it into a load which will probably
1454 * eventually end up as an SSA definition.
1456 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1457 op
= nir_intrinsic_load_var
;
1460 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1461 intrin
->num_components
= deref
->type
->vector_elements
;
1462 intrin
->variables
[0] = this->deref_head
;
1463 ralloc_steal(intrin
, intrin
->variables
[0]);
1465 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1466 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1467 intrin
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1469 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1470 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1473 unsigned swiz
[4] = {
1474 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1477 result
= nir_swizzle(&b
, result
, swiz
,
1478 swizzle
->type
->vector_elements
, false);
1488 nir_ssa_def
*srcs
[4];
1489 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1490 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1492 glsl_base_type types
[4];
1493 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1495 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1497 types
[i
] = GLSL_TYPE_FLOAT
;
1499 glsl_base_type out_type
;
1501 out_type
= ir
->type
->base_type
;
1503 out_type
= GLSL_TYPE_FLOAT
;
1505 switch (ir
->operation
) {
1506 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1507 case ir_unop_logic_not
:
1508 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1511 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1512 : nir_ineg(&b
, srcs
[0]);
1515 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1516 : nir_iabs(&b
, srcs
[0]);
1518 case ir_unop_saturate
:
1519 assert(type_is_float(types
[0]));
1520 result
= nir_fsat(&b
, srcs
[0]);
1523 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1524 : nir_isign(&b
, srcs
[0]);
1526 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1527 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1528 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1529 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1530 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1531 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1532 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1534 result
= supports_ints
? nir_i2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1537 result
= supports_ints
? nir_u2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1540 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1574 case ir_unop_i642u64
:
1575 case ir_unop_u642i64
: {
1576 nir_alu_type src_type
= nir_get_nir_type_for_glsl_base_type(types
[0]);
1577 nir_alu_type dst_type
= nir_get_nir_type_for_glsl_base_type(out_type
);
1578 result
= nir_build_alu(&b
, nir_type_conversion_op(src_type
, dst_type
),
1579 srcs
[0], NULL
, NULL
, NULL
);
1580 /* b2i and b2f don't have fixed bit-size versions so the builder will
1581 * just assume 32 and we have to fix it up here.
1583 result
->bit_size
= nir_alu_type_get_type_size(dst_type
);
1587 case ir_unop_bitcast_i2f
:
1588 case ir_unop_bitcast_f2i
:
1589 case ir_unop_bitcast_u2f
:
1590 case ir_unop_bitcast_f2u
:
1591 case ir_unop_bitcast_i642d
:
1592 case ir_unop_bitcast_d2i64
:
1593 case ir_unop_bitcast_u642d
:
1594 case ir_unop_bitcast_d2u64
:
1595 case ir_unop_subroutine_to_int
:
1597 result
= nir_imov(&b
, srcs
[0]);
1599 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1600 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1601 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1602 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1603 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1604 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1605 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1606 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1607 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1608 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1609 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1610 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1611 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1612 case ir_unop_pack_snorm_2x16
:
1613 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1615 case ir_unop_pack_snorm_4x8
:
1616 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1618 case ir_unop_pack_unorm_2x16
:
1619 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1621 case ir_unop_pack_unorm_4x8
:
1622 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1624 case ir_unop_pack_half_2x16
:
1625 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1627 case ir_unop_unpack_snorm_2x16
:
1628 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1630 case ir_unop_unpack_snorm_4x8
:
1631 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1633 case ir_unop_unpack_unorm_2x16
:
1634 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1636 case ir_unop_unpack_unorm_4x8
:
1637 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1639 case ir_unop_unpack_half_2x16
:
1640 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1642 case ir_unop_pack_double_2x32
:
1643 case ir_unop_pack_int_2x32
:
1644 case ir_unop_pack_uint_2x32
:
1645 result
= nir_pack_64_2x32(&b
, srcs
[0]);
1647 case ir_unop_unpack_double_2x32
:
1648 case ir_unop_unpack_int_2x32
:
1649 case ir_unop_unpack_uint_2x32
:
1650 result
= nir_unpack_64_2x32(&b
, srcs
[0]);
1652 case ir_unop_bitfield_reverse
:
1653 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1655 case ir_unop_bit_count
:
1656 result
= nir_bit_count(&b
, srcs
[0]);
1658 case ir_unop_find_msb
:
1660 case GLSL_TYPE_UINT
:
1661 result
= nir_ufind_msb(&b
, srcs
[0]);
1664 result
= nir_ifind_msb(&b
, srcs
[0]);
1667 unreachable("Invalid type for findMSB()");
1670 case ir_unop_find_lsb
:
1671 result
= nir_find_lsb(&b
, srcs
[0]);
1675 switch (ir
->type
->vector_elements
) {
1677 switch (ir
->operands
[0]->type
->vector_elements
) {
1678 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1679 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1680 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1681 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1682 default: unreachable("not reached");
1686 switch (ir
->operands
[0]->type
->vector_elements
) {
1687 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1688 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1689 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1690 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1691 default: unreachable("not reached");
1695 switch (ir
->operands
[0]->type
->vector_elements
) {
1696 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1697 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1698 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1699 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1700 default: unreachable("not reached");
1704 switch (ir
->operands
[0]->type
->vector_elements
) {
1705 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1706 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1707 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1708 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1709 default: unreachable("not reached");
1713 unreachable("not reached");
1716 case ir_unop_get_buffer_size
: {
1717 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1719 nir_intrinsic_get_buffer_size
);
1720 load
->num_components
= ir
->type
->vector_elements
;
1721 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1722 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1723 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1728 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1729 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1732 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1733 : nir_isub(&b
, srcs
[0], srcs
[1]);
1736 result
= type_is_float(out_type
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1737 : nir_imul(&b
, srcs
[0], srcs
[1]);
1740 if (type_is_float(out_type
))
1741 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1742 else if (type_is_signed(out_type
))
1743 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1745 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1748 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1749 : nir_umod(&b
, srcs
[0], srcs
[1]);
1752 if (type_is_float(out_type
))
1753 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1754 else if (type_is_signed(out_type
))
1755 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1757 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1760 if (type_is_float(out_type
))
1761 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1762 else if (type_is_signed(out_type
))
1763 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1765 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1767 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1768 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1769 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1770 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1771 case ir_binop_logic_and
:
1772 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1773 : nir_fand(&b
, srcs
[0], srcs
[1]);
1775 case ir_binop_logic_or
:
1776 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1777 : nir_for(&b
, srcs
[0], srcs
[1]);
1779 case ir_binop_logic_xor
:
1780 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1781 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1783 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1784 case ir_binop_rshift
:
1785 result
= (type_is_signed(out_type
)) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1786 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1788 case ir_binop_imul_high
:
1789 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1790 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1792 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1793 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1795 if (supports_ints
) {
1796 if (type_is_float(types
[0]))
1797 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1798 else if (type_is_signed(types
[0]))
1799 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1801 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1803 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1806 case ir_binop_gequal
:
1807 if (supports_ints
) {
1808 if (type_is_float(types
[0]))
1809 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1810 else if (type_is_signed(types
[0]))
1811 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1813 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1815 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1818 case ir_binop_equal
:
1819 if (supports_ints
) {
1820 if (type_is_float(types
[0]))
1821 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1823 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1825 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1828 case ir_binop_nequal
:
1829 if (supports_ints
) {
1830 if (type_is_float(types
[0]))
1831 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1833 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1835 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1838 case ir_binop_all_equal
:
1839 if (supports_ints
) {
1840 if (type_is_float(types
[0])) {
1841 switch (ir
->operands
[0]->type
->vector_elements
) {
1842 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1843 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1844 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1845 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1847 unreachable("not reached");
1850 switch (ir
->operands
[0]->type
->vector_elements
) {
1851 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1852 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1853 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1854 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1856 unreachable("not reached");
1860 switch (ir
->operands
[0]->type
->vector_elements
) {
1861 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1862 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1863 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1864 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1866 unreachable("not reached");
1870 case ir_binop_any_nequal
:
1871 if (supports_ints
) {
1872 if (type_is_float(types
[0])) {
1873 switch (ir
->operands
[0]->type
->vector_elements
) {
1874 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1875 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1876 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1877 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1879 unreachable("not reached");
1882 switch (ir
->operands
[0]->type
->vector_elements
) {
1883 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1884 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1885 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1886 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1888 unreachable("not reached");
1892 switch (ir
->operands
[0]->type
->vector_elements
) {
1893 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1894 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1895 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1896 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1898 unreachable("not reached");
1903 switch (ir
->operands
[0]->type
->vector_elements
) {
1904 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1905 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1906 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1908 unreachable("not reached");
1912 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1914 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1917 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1921 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1923 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1925 case ir_triop_bitfield_extract
:
1926 result
= (out_type
== GLSL_TYPE_INT
) ?
1927 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1928 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1930 case ir_quadop_bitfield_insert
:
1931 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1933 case ir_quadop_vector
:
1934 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1938 unreachable("not reached");
1943 nir_visitor::visit(ir_swizzle
*ir
)
1945 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1946 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1947 ir
->type
->vector_elements
, !supports_ints
);
1951 nir_visitor::visit(ir_texture
*ir
)
1958 num_srcs
= 1; /* coordinate */
1963 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1964 num_srcs
= 2; /* coordinate, bias/lod */
1968 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1974 if (ir
->lod_info
.lod
!= NULL
)
1975 num_srcs
= 2; /* coordinate, lod */
1977 num_srcs
= 1; /* coordinate */
1981 op
= nir_texop_txf_ms
;
1982 num_srcs
= 2; /* coordinate, sample_index */
1987 if (ir
->lod_info
.lod
!= NULL
)
1988 num_srcs
= 1; /* lod */
1995 num_srcs
= 1; /* coordinate */
2000 num_srcs
= 1; /* coordinate */
2003 case ir_query_levels
:
2004 op
= nir_texop_query_levels
;
2008 case ir_texture_samples
:
2009 op
= nir_texop_texture_samples
;
2013 case ir_samples_identical
:
2014 op
= nir_texop_samples_identical
;
2015 num_srcs
= 1; /* coordinate */
2019 unreachable("not reached");
2022 if (ir
->projector
!= NULL
)
2024 if (ir
->shadow_comparator
!= NULL
)
2026 if (ir
->offset
!= NULL
)
2029 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
2032 instr
->sampler_dim
=
2033 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
2034 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
2035 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
2036 if (instr
->is_shadow
)
2037 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
2038 switch (ir
->type
->base_type
) {
2039 case GLSL_TYPE_FLOAT
:
2040 instr
->dest_type
= nir_type_float
;
2043 instr
->dest_type
= nir_type_int
;
2045 case GLSL_TYPE_BOOL
:
2046 case GLSL_TYPE_UINT
:
2047 instr
->dest_type
= nir_type_uint
;
2050 unreachable("not reached");
2053 instr
->texture
= evaluate_deref(&instr
->instr
, ir
->sampler
);
2055 unsigned src_number
= 0;
2057 if (ir
->coordinate
!= NULL
) {
2058 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
2059 instr
->src
[src_number
].src
=
2060 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
2061 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2065 if (ir
->projector
!= NULL
) {
2066 instr
->src
[src_number
].src
=
2067 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
2068 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2072 if (ir
->shadow_comparator
!= NULL
) {
2073 instr
->src
[src_number
].src
=
2074 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparator
));
2075 instr
->src
[src_number
].src_type
= nir_tex_src_comparator
;
2079 if (ir
->offset
!= NULL
) {
2080 /* we don't support multiple offsets yet */
2081 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2083 instr
->src
[src_number
].src
=
2084 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
2085 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2091 instr
->src
[src_number
].src
=
2092 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
2093 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2100 if (ir
->lod_info
.lod
!= NULL
) {
2101 instr
->src
[src_number
].src
=
2102 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
2103 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2109 instr
->src
[src_number
].src
=
2110 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
2111 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2113 instr
->src
[src_number
].src
=
2114 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
2115 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2120 instr
->src
[src_number
].src
=
2121 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
2122 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2127 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2134 assert(src_number
== num_srcs
);
2136 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2137 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2141 nir_visitor::visit(ir_constant
*ir
)
2144 * We don't know if this variable is an array or struct that gets
2145 * dereferenced, so do the safe thing an make it a variable with a
2146 * constant initializer and return a dereference.
2150 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2151 var
->data
.read_only
= true;
2152 var
->constant_initializer
= constant_copy(ir
, var
);
2154 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2155 this->deref_tail
= &this->deref_head
->deref
;
2159 nir_visitor::visit(ir_dereference_variable
*ir
)
2161 struct hash_entry
*entry
=
2162 _mesa_hash_table_search(this->var_table
, ir
->var
);
2164 nir_variable
*var
= (nir_variable
*) entry
->data
;
2166 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2167 this->deref_head
= deref
;
2168 this->deref_tail
= &deref
->deref
;
2172 nir_visitor::visit(ir_dereference_record
*ir
)
2174 ir
->record
->accept(this);
2176 int field_index
= ir
->field_idx
;
2177 assert(field_index
>= 0);
2179 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2180 deref
->deref
.type
= ir
->type
;
2181 this->deref_tail
->child
= &deref
->deref
;
2182 this->deref_tail
= &deref
->deref
;
2186 nir_visitor::visit(ir_dereference_array
*ir
)
2188 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2189 deref
->deref
.type
= ir
->type
;
2191 ir_constant
*const_index
= ir
->array_index
->as_constant();
2192 if (const_index
!= NULL
) {
2193 deref
->deref_array_type
= nir_deref_array_type_direct
;
2194 deref
->base_offset
= const_index
->value
.u
[0];
2196 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2198 nir_src_for_ssa(evaluate_rvalue(ir
->array_index
));
2201 ir
->array
->accept(this);
2203 this->deref_tail
->child
= &deref
->deref
;
2204 ralloc_steal(this->deref_tail
, deref
);
2205 this->deref_tail
= &deref
->deref
;
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
);