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_var
*evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
);
96 /* the head of the dereference chain we're creating */
97 nir_deref_var
*deref_head
;
98 /* the tail of the dereference chain we're creating */
99 nir_deref
*deref_tail
;
101 nir_variable
*var
; /* variable created by ir_variable visitor */
103 /* whether the IR we're operating on is per-function or global */
106 /* map of ir_variable -> nir_variable */
107 struct hash_table
*var_table
;
109 /* map of ir_function_signature -> nir_function_overload */
110 struct hash_table
*overload_table
;
114 * This visitor runs before the main visitor, calling create_function() for
115 * each function so that the main visitor can resolve forward references in
119 class nir_function_visitor
: public ir_hierarchical_visitor
122 nir_function_visitor(nir_visitor
*v
) : visitor(v
)
125 virtual ir_visitor_status
visit_enter(ir_function
*);
128 nir_visitor
*visitor
;
131 } /* end of anonymous namespace */
134 nir_remap_attributes(nir_shader
*shader
,
135 const nir_shader_compiler_options
*options
)
137 if (options
->vs_inputs_dual_locations
) {
138 nir_foreach_variable(var
, &shader
->inputs
) {
139 var
->data
.location
+=
140 _mesa_bitcount_64(shader
->info
.vs
.double_inputs
&
141 BITFIELD64_MASK(var
->data
.location
));
145 /* Once the remap is done, reset double_inputs_read, so later it will have
146 * which location/slots are doubles */
147 shader
->info
.vs
.double_inputs
= 0;
151 glsl_to_nir(const struct gl_shader_program
*shader_prog
,
152 gl_shader_stage stage
,
153 const nir_shader_compiler_options
*options
)
155 struct gl_linked_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
157 nir_shader
*shader
= nir_shader_create(NULL
, stage
, options
,
160 nir_visitor
v1(shader
);
161 nir_function_visitor
v2(&v1
);
163 visit_exec_list(sh
->ir
, &v1
);
165 nir_lower_constant_initializers(shader
, (nir_variable_mode
)~0);
167 /* Remap the locations to slots so those requiring two slots will occupy
168 * two locations. For instance, if we have in the IR code a dvec3 attr0 in
169 * location 0 and vec4 attr1 in location 1, in NIR attr0 will use
170 * locations/slots 0 and 1, and attr1 will use location/slot 2 */
171 if (shader
->info
.stage
== MESA_SHADER_VERTEX
)
172 nir_remap_attributes(shader
, options
);
174 shader
->info
.name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
175 if (shader_prog
->Label
)
176 shader
->info
.label
= ralloc_strdup(shader
, shader_prog
->Label
);
178 /* Check for transform feedback varyings specified via the API */
179 shader
->info
.has_transform_feedback_varyings
=
180 shader_prog
->TransformFeedback
.NumVarying
> 0;
182 /* Check for transform feedback varyings specified in the Shader */
183 if (shader_prog
->last_vert_prog
)
184 shader
->info
.has_transform_feedback_varyings
|=
185 shader_prog
->last_vert_prog
->sh
.LinkedTransformFeedback
->NumVarying
> 0;
190 nir_visitor::nir_visitor(nir_shader
*shader
)
192 this->supports_ints
= shader
->options
->native_integers
;
193 this->shader
= shader
;
194 this->is_global
= true;
195 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
196 _mesa_key_pointer_equal
);
197 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
198 _mesa_key_pointer_equal
);
202 this->deref_head
= NULL
;
203 this->deref_tail
= NULL
;
204 memset(&this->b
, 0, sizeof(this->b
));
207 nir_visitor::~nir_visitor()
209 _mesa_hash_table_destroy(this->var_table
, NULL
);
210 _mesa_hash_table_destroy(this->overload_table
, NULL
);
214 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
217 ralloc_steal(mem_ctx
, this->deref_head
);
218 return this->deref_head
;
221 static nir_constant
*
222 constant_copy(ir_constant
*ir
, void *mem_ctx
)
227 nir_constant
*ret
= rzalloc(mem_ctx
, nir_constant
);
229 const unsigned rows
= ir
->type
->vector_elements
;
230 const unsigned cols
= ir
->type
->matrix_columns
;
233 ret
->num_elements
= 0;
234 switch (ir
->type
->base_type
) {
236 /* Only float base types can be matrices. */
239 for (unsigned r
= 0; r
< rows
; r
++)
240 ret
->values
[0].u32
[r
] = ir
->value
.u
[r
];
245 /* Only float base types can be matrices. */
248 for (unsigned r
= 0; r
< rows
; r
++)
249 ret
->values
[0].i32
[r
] = ir
->value
.i
[r
];
253 case GLSL_TYPE_FLOAT
:
254 for (unsigned c
= 0; c
< cols
; c
++) {
255 for (unsigned r
= 0; r
< rows
; r
++)
256 ret
->values
[c
].f32
[r
] = ir
->value
.f
[c
* rows
+ r
];
260 case GLSL_TYPE_DOUBLE
:
261 for (unsigned c
= 0; c
< cols
; c
++) {
262 for (unsigned r
= 0; r
< rows
; r
++)
263 ret
->values
[c
].f64
[r
] = ir
->value
.d
[c
* rows
+ r
];
267 case GLSL_TYPE_UINT64
:
268 /* Only float base types can be matrices. */
271 for (unsigned r
= 0; r
< rows
; r
++)
272 ret
->values
[0].u64
[r
] = ir
->value
.u64
[r
];
275 case GLSL_TYPE_INT64
:
276 /* Only float base types can be matrices. */
279 for (unsigned r
= 0; r
< rows
; r
++)
280 ret
->values
[0].i64
[r
] = ir
->value
.i64
[r
];
284 /* Only float base types can be matrices. */
287 for (unsigned r
= 0; r
< rows
; r
++)
288 ret
->values
[0].u32
[r
] = ir
->value
.b
[r
] ? NIR_TRUE
: NIR_FALSE
;
292 case GLSL_TYPE_STRUCT
:
293 case GLSL_TYPE_ARRAY
:
294 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
296 ret
->num_elements
= ir
->type
->length
;
298 for (i
= 0; i
< ir
->type
->length
; i
++)
299 ret
->elements
[i
] = constant_copy(ir
->const_elements
[i
], mem_ctx
);
303 unreachable("not reached");
310 nir_visitor::visit(ir_variable
*ir
)
312 /* TODO: In future we should switch to using the NIR lowering pass but for
313 * now just ignore these variables as GLSL IR should have lowered them.
314 * Anything remaining are just dead vars that weren't cleaned up.
316 if (ir
->data
.mode
== ir_var_shader_shared
)
319 nir_variable
*var
= rzalloc(shader
, nir_variable
);
320 var
->type
= ir
->type
;
321 var
->name
= ralloc_strdup(var
, ir
->name
);
323 var
->data
.always_active_io
= ir
->data
.always_active_io
;
324 var
->data
.read_only
= ir
->data
.read_only
;
325 var
->data
.centroid
= ir
->data
.centroid
;
326 var
->data
.sample
= ir
->data
.sample
;
327 var
->data
.patch
= ir
->data
.patch
;
328 var
->data
.invariant
= ir
->data
.invariant
;
329 var
->data
.location
= ir
->data
.location
;
330 var
->data
.stream
= ir
->data
.stream
;
331 var
->data
.compact
= false;
333 switch(ir
->data
.mode
) {
335 case ir_var_temporary
:
337 var
->data
.mode
= nir_var_global
;
339 var
->data
.mode
= nir_var_local
;
342 case ir_var_function_in
:
343 case ir_var_function_out
:
344 case ir_var_function_inout
:
345 case ir_var_const_in
:
346 var
->data
.mode
= nir_var_local
;
349 case ir_var_shader_in
:
350 if (shader
->info
.stage
== MESA_SHADER_FRAGMENT
&&
351 ir
->data
.location
== VARYING_SLOT_FACE
) {
352 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
353 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
354 var
->data
.mode
= nir_var_system_value
;
355 } else if (shader
->info
.stage
== MESA_SHADER_GEOMETRY
&&
356 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
357 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
358 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
359 var
->data
.mode
= nir_var_system_value
;
361 var
->data
.mode
= nir_var_shader_in
;
363 if (shader
->info
.stage
== MESA_SHADER_TESS_EVAL
&&
364 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
365 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
366 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
370 /* Mark all the locations that require two slots */
371 if (shader
->info
.stage
== MESA_SHADER_VERTEX
&&
372 glsl_type_is_dual_slot(glsl_without_array(var
->type
))) {
373 for (unsigned i
= 0; i
< glsl_count_attribute_slots(var
->type
, true); i
++) {
374 uint64_t bitfield
= BITFIELD64_BIT(var
->data
.location
+ i
);
375 shader
->info
.vs
.double_inputs
|= bitfield
;
380 case ir_var_shader_out
:
381 var
->data
.mode
= nir_var_shader_out
;
382 if (shader
->info
.stage
== MESA_SHADER_TESS_CTRL
&&
383 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
384 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
385 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
390 var
->data
.mode
= nir_var_uniform
;
393 case ir_var_shader_storage
:
394 var
->data
.mode
= nir_var_shader_storage
;
397 case ir_var_system_value
:
398 var
->data
.mode
= nir_var_system_value
;
402 unreachable("not reached");
405 var
->data
.interpolation
= ir
->data
.interpolation
;
406 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
407 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
408 var
->data
.location_frac
= ir
->data
.location_frac
;
410 if (var
->data
.pixel_center_integer
) {
411 assert(shader
->info
.stage
== MESA_SHADER_FRAGMENT
);
412 shader
->info
.fs
.pixel_center_integer
= true;
415 switch (ir
->data
.depth_layout
) {
416 case ir_depth_layout_none
:
417 var
->data
.depth_layout
= nir_depth_layout_none
;
419 case ir_depth_layout_any
:
420 var
->data
.depth_layout
= nir_depth_layout_any
;
422 case ir_depth_layout_greater
:
423 var
->data
.depth_layout
= nir_depth_layout_greater
;
425 case ir_depth_layout_less
:
426 var
->data
.depth_layout
= nir_depth_layout_less
;
428 case ir_depth_layout_unchanged
:
429 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
432 unreachable("not reached");
435 var
->data
.index
= ir
->data
.index
;
436 var
->data
.descriptor_set
= 0;
437 var
->data
.binding
= ir
->data
.binding
;
438 var
->data
.bindless
= ir
->data
.bindless
;
439 var
->data
.offset
= ir
->data
.offset
;
440 var
->data
.image
.read_only
= ir
->data
.memory_read_only
;
441 var
->data
.image
.write_only
= ir
->data
.memory_write_only
;
442 var
->data
.image
.coherent
= ir
->data
.memory_coherent
;
443 var
->data
.image
._volatile
= ir
->data
.memory_volatile
;
444 var
->data
.image
.restrict_flag
= ir
->data
.memory_restrict
;
445 var
->data
.image
.format
= ir
->data
.image_format
;
446 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
448 var
->num_state_slots
= ir
->get_num_state_slots();
449 if (var
->num_state_slots
> 0) {
450 var
->state_slots
= rzalloc_array(var
, nir_state_slot
,
451 var
->num_state_slots
);
453 ir_state_slot
*state_slots
= ir
->get_state_slots();
454 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
455 for (unsigned j
= 0; j
< 5; j
++)
456 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
457 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
460 var
->state_slots
= NULL
;
463 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
465 var
->interface_type
= ir
->get_interface_type();
467 if (var
->data
.mode
== nir_var_local
)
468 nir_function_impl_add_variable(impl
, var
);
470 nir_shader_add_variable(shader
, var
);
472 _mesa_hash_table_insert(var_table
, ir
, var
);
477 nir_function_visitor::visit_enter(ir_function
*ir
)
479 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
480 visitor
->create_function(sig
);
482 return visit_continue_with_parent
;
486 nir_visitor::create_function(ir_function_signature
*ir
)
488 if (ir
->is_intrinsic())
491 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
493 assert(ir
->parameters
.is_empty());
494 assert(ir
->return_type
== glsl_type::void_type
);
496 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
500 nir_visitor::visit(ir_function
*ir
)
502 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
507 nir_visitor::visit(ir_function_signature
*ir
)
509 if (ir
->is_intrinsic())
512 struct hash_entry
*entry
=
513 _mesa_hash_table_search(this->overload_table
, ir
);
516 nir_function
*func
= (nir_function
*) entry
->data
;
518 if (ir
->is_defined
) {
519 nir_function_impl
*impl
= nir_function_impl_create(func
);
522 assert(strcmp(func
->name
, "main") == 0);
523 assert(ir
->parameters
.is_empty());
524 assert(func
->return_type
== glsl_type::void_type
);
526 this->is_global
= false;
528 nir_builder_init(&b
, impl
);
529 b
.cursor
= nir_after_cf_list(&impl
->body
);
530 visit_exec_list(&ir
->body
, this);
532 this->is_global
= true;
539 nir_visitor::visit(ir_loop
*ir
)
542 visit_exec_list(&ir
->body_instructions
, this);
543 nir_pop_loop(&b
, NULL
);
547 nir_visitor::visit(ir_if
*ir
)
549 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
550 visit_exec_list(&ir
->then_instructions
, this);
551 nir_push_else(&b
, NULL
);
552 visit_exec_list(&ir
->else_instructions
, this);
553 nir_pop_if(&b
, NULL
);
557 nir_visitor::visit(ir_discard
*ir
)
560 * discards aren't treated as control flow, because before we lower them
561 * they can appear anywhere in the shader and the stuff after them may still
562 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
563 * discards will be immediately followed by a return.
566 nir_intrinsic_instr
*discard
;
568 discard
= nir_intrinsic_instr_create(this->shader
,
569 nir_intrinsic_discard_if
);
571 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
573 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
576 nir_builder_instr_insert(&b
, &discard
->instr
);
580 nir_visitor::visit(ir_emit_vertex
*ir
)
582 nir_intrinsic_instr
*instr
=
583 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
584 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
585 nir_builder_instr_insert(&b
, &instr
->instr
);
589 nir_visitor::visit(ir_end_primitive
*ir
)
591 nir_intrinsic_instr
*instr
=
592 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
593 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
594 nir_builder_instr_insert(&b
, &instr
->instr
);
598 nir_visitor::visit(ir_loop_jump
*ir
)
602 case ir_loop_jump::jump_break
:
603 type
= nir_jump_break
;
605 case ir_loop_jump::jump_continue
:
606 type
= nir_jump_continue
;
609 unreachable("not reached");
612 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
613 nir_builder_instr_insert(&b
, &instr
->instr
);
617 nir_visitor::visit(ir_return
*ir
)
619 if (ir
->value
!= NULL
) {
620 nir_intrinsic_instr
*copy
=
621 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
623 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
624 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
627 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
628 nir_builder_instr_insert(&b
, &instr
->instr
);
632 nir_visitor::visit(ir_call
*ir
)
634 if (ir
->callee
->is_intrinsic()) {
637 switch (ir
->callee
->intrinsic_id
) {
638 case ir_intrinsic_atomic_counter_read
:
639 op
= nir_intrinsic_atomic_counter_read_var
;
641 case ir_intrinsic_atomic_counter_increment
:
642 op
= nir_intrinsic_atomic_counter_inc_var
;
644 case ir_intrinsic_atomic_counter_predecrement
:
645 op
= nir_intrinsic_atomic_counter_dec_var
;
647 case ir_intrinsic_atomic_counter_add
:
648 op
= nir_intrinsic_atomic_counter_add_var
;
650 case ir_intrinsic_atomic_counter_and
:
651 op
= nir_intrinsic_atomic_counter_and_var
;
653 case ir_intrinsic_atomic_counter_or
:
654 op
= nir_intrinsic_atomic_counter_or_var
;
656 case ir_intrinsic_atomic_counter_xor
:
657 op
= nir_intrinsic_atomic_counter_xor_var
;
659 case ir_intrinsic_atomic_counter_min
:
660 op
= nir_intrinsic_atomic_counter_min_var
;
662 case ir_intrinsic_atomic_counter_max
:
663 op
= nir_intrinsic_atomic_counter_max_var
;
665 case ir_intrinsic_atomic_counter_exchange
:
666 op
= nir_intrinsic_atomic_counter_exchange_var
;
668 case ir_intrinsic_atomic_counter_comp_swap
:
669 op
= nir_intrinsic_atomic_counter_comp_swap_var
;
671 case ir_intrinsic_image_load
:
672 op
= nir_intrinsic_image_var_load
;
674 case ir_intrinsic_image_store
:
675 op
= nir_intrinsic_image_var_store
;
677 case ir_intrinsic_image_atomic_add
:
678 op
= nir_intrinsic_image_var_atomic_add
;
680 case ir_intrinsic_image_atomic_min
:
681 op
= nir_intrinsic_image_var_atomic_min
;
683 case ir_intrinsic_image_atomic_max
:
684 op
= nir_intrinsic_image_var_atomic_max
;
686 case ir_intrinsic_image_atomic_and
:
687 op
= nir_intrinsic_image_var_atomic_and
;
689 case ir_intrinsic_image_atomic_or
:
690 op
= nir_intrinsic_image_var_atomic_or
;
692 case ir_intrinsic_image_atomic_xor
:
693 op
= nir_intrinsic_image_var_atomic_xor
;
695 case ir_intrinsic_image_atomic_exchange
:
696 op
= nir_intrinsic_image_var_atomic_exchange
;
698 case ir_intrinsic_image_atomic_comp_swap
:
699 op
= nir_intrinsic_image_var_atomic_comp_swap
;
701 case ir_intrinsic_memory_barrier
:
702 op
= nir_intrinsic_memory_barrier
;
704 case ir_intrinsic_image_size
:
705 op
= nir_intrinsic_image_var_size
;
707 case ir_intrinsic_image_samples
:
708 op
= nir_intrinsic_image_var_samples
;
710 case ir_intrinsic_ssbo_store
:
711 op
= nir_intrinsic_store_ssbo
;
713 case ir_intrinsic_ssbo_load
:
714 op
= nir_intrinsic_load_ssbo
;
716 case ir_intrinsic_ssbo_atomic_add
:
717 op
= nir_intrinsic_ssbo_atomic_add
;
719 case ir_intrinsic_ssbo_atomic_and
:
720 op
= nir_intrinsic_ssbo_atomic_and
;
722 case ir_intrinsic_ssbo_atomic_or
:
723 op
= nir_intrinsic_ssbo_atomic_or
;
725 case ir_intrinsic_ssbo_atomic_xor
:
726 op
= nir_intrinsic_ssbo_atomic_xor
;
728 case ir_intrinsic_ssbo_atomic_min
:
729 assert(ir
->return_deref
);
730 if (ir
->return_deref
->type
== glsl_type::int_type
)
731 op
= nir_intrinsic_ssbo_atomic_imin
;
732 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
733 op
= nir_intrinsic_ssbo_atomic_umin
;
735 unreachable("Invalid type");
737 case ir_intrinsic_ssbo_atomic_max
:
738 assert(ir
->return_deref
);
739 if (ir
->return_deref
->type
== glsl_type::int_type
)
740 op
= nir_intrinsic_ssbo_atomic_imax
;
741 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
742 op
= nir_intrinsic_ssbo_atomic_umax
;
744 unreachable("Invalid type");
746 case ir_intrinsic_ssbo_atomic_exchange
:
747 op
= nir_intrinsic_ssbo_atomic_exchange
;
749 case ir_intrinsic_ssbo_atomic_comp_swap
:
750 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
752 case ir_intrinsic_shader_clock
:
753 op
= nir_intrinsic_shader_clock
;
755 case ir_intrinsic_begin_invocation_interlock
:
756 op
= nir_intrinsic_begin_invocation_interlock
;
758 case ir_intrinsic_end_invocation_interlock
:
759 op
= nir_intrinsic_end_invocation_interlock
;
761 case ir_intrinsic_group_memory_barrier
:
762 op
= nir_intrinsic_group_memory_barrier
;
764 case ir_intrinsic_memory_barrier_atomic_counter
:
765 op
= nir_intrinsic_memory_barrier_atomic_counter
;
767 case ir_intrinsic_memory_barrier_buffer
:
768 op
= nir_intrinsic_memory_barrier_buffer
;
770 case ir_intrinsic_memory_barrier_image
:
771 op
= nir_intrinsic_memory_barrier_image
;
773 case ir_intrinsic_memory_barrier_shared
:
774 op
= nir_intrinsic_memory_barrier_shared
;
776 case ir_intrinsic_shared_load
:
777 op
= nir_intrinsic_load_shared
;
779 case ir_intrinsic_shared_store
:
780 op
= nir_intrinsic_store_shared
;
782 case ir_intrinsic_shared_atomic_add
:
783 op
= nir_intrinsic_shared_atomic_add
;
785 case ir_intrinsic_shared_atomic_and
:
786 op
= nir_intrinsic_shared_atomic_and
;
788 case ir_intrinsic_shared_atomic_or
:
789 op
= nir_intrinsic_shared_atomic_or
;
791 case ir_intrinsic_shared_atomic_xor
:
792 op
= nir_intrinsic_shared_atomic_xor
;
794 case ir_intrinsic_shared_atomic_min
:
795 assert(ir
->return_deref
);
796 if (ir
->return_deref
->type
== glsl_type::int_type
)
797 op
= nir_intrinsic_shared_atomic_imin
;
798 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
799 op
= nir_intrinsic_shared_atomic_umin
;
801 unreachable("Invalid type");
803 case ir_intrinsic_shared_atomic_max
:
804 assert(ir
->return_deref
);
805 if (ir
->return_deref
->type
== glsl_type::int_type
)
806 op
= nir_intrinsic_shared_atomic_imax
;
807 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
808 op
= nir_intrinsic_shared_atomic_umax
;
810 unreachable("Invalid type");
812 case ir_intrinsic_shared_atomic_exchange
:
813 op
= nir_intrinsic_shared_atomic_exchange
;
815 case ir_intrinsic_shared_atomic_comp_swap
:
816 op
= nir_intrinsic_shared_atomic_comp_swap
;
818 case ir_intrinsic_vote_any
:
819 op
= nir_intrinsic_vote_any
;
821 case ir_intrinsic_vote_all
:
822 op
= nir_intrinsic_vote_all
;
824 case ir_intrinsic_vote_eq
:
825 op
= nir_intrinsic_vote_ieq
;
827 case ir_intrinsic_ballot
:
828 op
= nir_intrinsic_ballot
;
830 case ir_intrinsic_read_invocation
:
831 op
= nir_intrinsic_read_invocation
;
833 case ir_intrinsic_read_first_invocation
:
834 op
= nir_intrinsic_read_first_invocation
;
837 unreachable("not reached");
840 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
841 nir_dest
*dest
= &instr
->dest
;
844 case nir_intrinsic_atomic_counter_read_var
:
845 case nir_intrinsic_atomic_counter_inc_var
:
846 case nir_intrinsic_atomic_counter_dec_var
:
847 case nir_intrinsic_atomic_counter_add_var
:
848 case nir_intrinsic_atomic_counter_min_var
:
849 case nir_intrinsic_atomic_counter_max_var
:
850 case nir_intrinsic_atomic_counter_and_var
:
851 case nir_intrinsic_atomic_counter_or_var
:
852 case nir_intrinsic_atomic_counter_xor_var
:
853 case nir_intrinsic_atomic_counter_exchange_var
:
854 case nir_intrinsic_atomic_counter_comp_swap_var
: {
855 /* Set the counter variable dereference. */
856 exec_node
*param
= ir
->actual_parameters
.get_head();
857 ir_dereference
*counter
= (ir_dereference
*)param
;
859 instr
->variables
[0] = evaluate_deref(&instr
->instr
, counter
);
860 param
= param
->get_next();
862 /* Set the intrinsic destination. */
863 if (ir
->return_deref
) {
864 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
867 /* Set the intrinsic parameters. */
868 if (!param
->is_tail_sentinel()) {
870 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
871 param
= param
->get_next();
874 if (!param
->is_tail_sentinel()) {
876 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
877 param
= param
->get_next();
880 nir_builder_instr_insert(&b
, &instr
->instr
);
883 case nir_intrinsic_image_var_load
:
884 case nir_intrinsic_image_var_store
:
885 case nir_intrinsic_image_var_atomic_add
:
886 case nir_intrinsic_image_var_atomic_min
:
887 case nir_intrinsic_image_var_atomic_max
:
888 case nir_intrinsic_image_var_atomic_and
:
889 case nir_intrinsic_image_var_atomic_or
:
890 case nir_intrinsic_image_var_atomic_xor
:
891 case nir_intrinsic_image_var_atomic_exchange
:
892 case nir_intrinsic_image_var_atomic_comp_swap
:
893 case nir_intrinsic_image_var_samples
:
894 case nir_intrinsic_image_var_size
: {
895 nir_ssa_undef_instr
*instr_undef
=
896 nir_ssa_undef_instr_create(shader
, 1, 32);
897 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
899 /* Set the image variable dereference. */
900 exec_node
*param
= ir
->actual_parameters
.get_head();
901 ir_dereference
*image
= (ir_dereference
*)param
;
902 const glsl_type
*type
=
903 image
->variable_referenced()->type
->without_array();
905 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
906 param
= param
->get_next();
908 /* Set the intrinsic destination. */
909 if (ir
->return_deref
) {
910 unsigned num_components
= ir
->return_deref
->type
->vector_elements
;
911 if (instr
->intrinsic
== nir_intrinsic_image_var_size
)
912 instr
->num_components
= num_components
;
913 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
914 num_components
, 32, NULL
);
917 if (op
== nir_intrinsic_image_var_size
||
918 op
== nir_intrinsic_image_var_samples
) {
919 nir_builder_instr_insert(&b
, &instr
->instr
);
923 /* Set the address argument, extending the coordinate vector to four
926 nir_ssa_def
*src_addr
=
927 evaluate_rvalue((ir_dereference
*)param
);
928 nir_ssa_def
*srcs
[4];
930 for (int i
= 0; i
< 4; i
++) {
931 if (i
< type
->coordinate_components())
932 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
934 srcs
[i
] = &instr_undef
->def
;
937 instr
->src
[0] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
938 param
= param
->get_next();
940 /* Set the sample argument, which is undefined for single-sample
943 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
945 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
946 param
= param
->get_next();
948 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
951 /* Set the intrinsic parameters. */
952 if (!param
->is_tail_sentinel()) {
954 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
955 param
= param
->get_next();
958 if (!param
->is_tail_sentinel()) {
960 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
961 param
= param
->get_next();
963 nir_builder_instr_insert(&b
, &instr
->instr
);
966 case nir_intrinsic_memory_barrier
:
967 case nir_intrinsic_group_memory_barrier
:
968 case nir_intrinsic_memory_barrier_atomic_counter
:
969 case nir_intrinsic_memory_barrier_buffer
:
970 case nir_intrinsic_memory_barrier_image
:
971 case nir_intrinsic_memory_barrier_shared
:
972 nir_builder_instr_insert(&b
, &instr
->instr
);
974 case nir_intrinsic_shader_clock
:
975 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 2, 32, NULL
);
976 instr
->num_components
= 2;
977 nir_builder_instr_insert(&b
, &instr
->instr
);
979 case nir_intrinsic_begin_invocation_interlock
:
980 nir_builder_instr_insert(&b
, &instr
->instr
);
982 case nir_intrinsic_end_invocation_interlock
:
983 nir_builder_instr_insert(&b
, &instr
->instr
);
985 case nir_intrinsic_store_ssbo
: {
986 exec_node
*param
= ir
->actual_parameters
.get_head();
987 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
989 param
= param
->get_next();
990 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
992 param
= param
->get_next();
993 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
995 param
= param
->get_next();
996 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
999 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1000 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
1001 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
1002 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1003 instr
->num_components
= val
->type
->vector_elements
;
1005 nir_builder_instr_insert(&b
, &instr
->instr
);
1008 case nir_intrinsic_load_ssbo
: {
1009 exec_node
*param
= ir
->actual_parameters
.get_head();
1010 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
1012 param
= param
->get_next();
1013 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1015 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
1016 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1018 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1019 instr
->num_components
= type
->vector_elements
;
1021 /* Setup destination register */
1022 unsigned bit_size
= glsl_get_bit_size(type
);
1023 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1024 type
->vector_elements
, bit_size
, NULL
);
1026 /* Insert the created nir instruction now since in the case of boolean
1027 * result we will need to emit another instruction after it
1029 nir_builder_instr_insert(&b
, &instr
->instr
);
1032 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
1033 * consider a true boolean to be ~0. Fix this up with a != 0
1036 if (type
->is_boolean()) {
1037 nir_alu_instr
*load_ssbo_compare
=
1038 nir_alu_instr_create(shader
, nir_op_ine
);
1039 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
1040 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
1041 load_ssbo_compare
->src
[1].src
=
1042 nir_src_for_ssa(nir_imm_int(&b
, 0));
1043 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
1044 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
1045 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
1046 &load_ssbo_compare
->dest
.dest
,
1047 type
->vector_elements
, bit_size
, NULL
);
1048 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
1049 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
1050 dest
= &load_ssbo_compare
->dest
.dest
;
1054 case nir_intrinsic_ssbo_atomic_add
:
1055 case nir_intrinsic_ssbo_atomic_imin
:
1056 case nir_intrinsic_ssbo_atomic_umin
:
1057 case nir_intrinsic_ssbo_atomic_imax
:
1058 case nir_intrinsic_ssbo_atomic_umax
:
1059 case nir_intrinsic_ssbo_atomic_and
:
1060 case nir_intrinsic_ssbo_atomic_or
:
1061 case nir_intrinsic_ssbo_atomic_xor
:
1062 case nir_intrinsic_ssbo_atomic_exchange
:
1063 case nir_intrinsic_ssbo_atomic_comp_swap
: {
1064 int param_count
= ir
->actual_parameters
.length();
1065 assert(param_count
== 3 || param_count
== 4);
1068 exec_node
*param
= ir
->actual_parameters
.get_head();
1069 ir_instruction
*inst
= (ir_instruction
*) param
;
1070 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1073 param
= param
->get_next();
1074 inst
= (ir_instruction
*) param
;
1075 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1077 /* data1 parameter (this is always present) */
1078 param
= param
->get_next();
1079 inst
= (ir_instruction
*) param
;
1080 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1082 /* data2 parameter (only with atomic_comp_swap) */
1083 if (param_count
== 4) {
1084 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
1085 param
= param
->get_next();
1086 inst
= (ir_instruction
*) param
;
1087 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1091 assert(ir
->return_deref
);
1092 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1093 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1094 nir_builder_instr_insert(&b
, &instr
->instr
);
1097 case nir_intrinsic_load_shared
: {
1098 exec_node
*param
= ir
->actual_parameters
.get_head();
1099 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1101 nir_intrinsic_set_base(instr
, 0);
1102 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1104 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1105 instr
->num_components
= type
->vector_elements
;
1107 /* Setup destination register */
1108 unsigned bit_size
= glsl_get_bit_size(type
);
1109 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1110 type
->vector_elements
, bit_size
, NULL
);
1112 nir_builder_instr_insert(&b
, &instr
->instr
);
1115 case nir_intrinsic_store_shared
: {
1116 exec_node
*param
= ir
->actual_parameters
.get_head();
1117 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1119 param
= param
->get_next();
1120 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1122 param
= param
->get_next();
1123 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1126 nir_intrinsic_set_base(instr
, 0);
1127 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1129 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1131 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1132 instr
->num_components
= val
->type
->vector_elements
;
1134 nir_builder_instr_insert(&b
, &instr
->instr
);
1137 case nir_intrinsic_shared_atomic_add
:
1138 case nir_intrinsic_shared_atomic_imin
:
1139 case nir_intrinsic_shared_atomic_umin
:
1140 case nir_intrinsic_shared_atomic_imax
:
1141 case nir_intrinsic_shared_atomic_umax
:
1142 case nir_intrinsic_shared_atomic_and
:
1143 case nir_intrinsic_shared_atomic_or
:
1144 case nir_intrinsic_shared_atomic_xor
:
1145 case nir_intrinsic_shared_atomic_exchange
:
1146 case nir_intrinsic_shared_atomic_comp_swap
: {
1147 int param_count
= ir
->actual_parameters
.length();
1148 assert(param_count
== 2 || param_count
== 3);
1151 exec_node
*param
= ir
->actual_parameters
.get_head();
1152 ir_instruction
*inst
= (ir_instruction
*) param
;
1153 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1155 /* data1 parameter (this is always present) */
1156 param
= param
->get_next();
1157 inst
= (ir_instruction
*) param
;
1158 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1160 /* data2 parameter (only with atomic_comp_swap) */
1161 if (param_count
== 3) {
1162 assert(op
== nir_intrinsic_shared_atomic_comp_swap
);
1163 param
= param
->get_next();
1164 inst
= (ir_instruction
*) param
;
1166 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1170 assert(ir
->return_deref
);
1171 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1172 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1173 ir
->return_deref
->type
->vector_elements
,
1175 nir_builder_instr_insert(&b
, &instr
->instr
);
1178 case nir_intrinsic_vote_any
:
1179 case nir_intrinsic_vote_all
:
1180 case nir_intrinsic_vote_ieq
: {
1181 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
1182 instr
->num_components
= 1;
1184 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1185 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1187 nir_builder_instr_insert(&b
, &instr
->instr
);
1191 case nir_intrinsic_ballot
: {
1192 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1193 ir
->return_deref
->type
->vector_elements
, 64, 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
);
1202 case nir_intrinsic_read_invocation
: {
1203 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1204 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1205 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1207 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1208 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1210 ir_rvalue
*invocation
= (ir_rvalue
*) ir
->actual_parameters
.get_head()->next
;
1211 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(invocation
));
1213 nir_builder_instr_insert(&b
, &instr
->instr
);
1216 case nir_intrinsic_read_first_invocation
: {
1217 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1218 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1219 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1221 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1222 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1224 nir_builder_instr_insert(&b
, &instr
->instr
);
1228 unreachable("not reached");
1231 if (ir
->return_deref
) {
1232 nir_intrinsic_instr
*store_instr
=
1233 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
1234 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1235 nir_intrinsic_set_write_mask(store_instr
,
1236 (1 << store_instr
->num_components
) - 1);
1238 store_instr
->variables
[0] =
1239 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
1240 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
1242 nir_builder_instr_insert(&b
, &store_instr
->instr
);
1248 struct hash_entry
*entry
=
1249 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1251 nir_function
*callee
= (nir_function
*) entry
->data
;
1253 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
1256 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
1257 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
1261 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
1262 nir_builder_instr_insert(&b
, &instr
->instr
);
1266 nir_visitor::visit(ir_assignment
*ir
)
1268 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1270 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1271 ir
->lhs
->variable_referenced()->data
.precise
;
1273 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1274 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1275 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1276 nir_intrinsic_instr
*copy
=
1277 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1279 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1280 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1282 if (ir
->condition
) {
1283 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1284 nir_builder_instr_insert(&b
, ©
->instr
);
1285 nir_pop_if(&b
, NULL
);
1287 nir_builder_instr_insert(&b
, ©
->instr
);
1292 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1294 ir
->lhs
->accept(this);
1295 nir_deref_var
*lhs_deref
= this->deref_head
;
1296 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1298 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1299 /* GLSL IR will give us the input to the write-masked assignment in a
1300 * single packed vector. So, for example, if the writemask is xzw, then
1301 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1305 unsigned component
= 0;
1306 for (unsigned i
= 0; i
< 4; i
++) {
1307 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1309 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1312 nir_intrinsic_instr
*store
=
1313 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1314 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1315 nir_intrinsic_set_write_mask(store
, ir
->write_mask
);
1316 store
->variables
[0] = nir_deref_var_clone(lhs_deref
, store
);
1317 store
->src
[0] = nir_src_for_ssa(src
);
1319 if (ir
->condition
) {
1320 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1321 nir_builder_instr_insert(&b
, &store
->instr
);
1322 nir_pop_if(&b
, NULL
);
1324 nir_builder_instr_insert(&b
, &store
->instr
);
1329 * Given an instruction, returns a pointer to its destination or NULL if there
1330 * is no destination.
1332 * Note that this only handles instructions we generate at this level.
1335 get_instr_dest(nir_instr
*instr
)
1337 nir_alu_instr
*alu_instr
;
1338 nir_intrinsic_instr
*intrinsic_instr
;
1339 nir_tex_instr
*tex_instr
;
1341 switch (instr
->type
) {
1342 case nir_instr_type_alu
:
1343 alu_instr
= nir_instr_as_alu(instr
);
1344 return &alu_instr
->dest
.dest
;
1346 case nir_instr_type_intrinsic
:
1347 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1348 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1349 return &intrinsic_instr
->dest
;
1353 case nir_instr_type_tex
:
1354 tex_instr
= nir_instr_as_tex(instr
);
1355 return &tex_instr
->dest
;
1358 unreachable("not reached");
1365 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1368 nir_dest
*dest
= get_instr_dest(instr
);
1371 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1373 nir_builder_instr_insert(&b
, instr
);
1376 assert(dest
->is_ssa
);
1377 this->result
= &dest
->ssa
;
1382 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1385 if (ir
->as_dereference() || ir
->as_constant()) {
1387 * A dereference is being used on the right hand side, which means we
1388 * must emit a variable load.
1391 nir_intrinsic_instr
*load_instr
=
1392 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1393 load_instr
->num_components
= ir
->type
->vector_elements
;
1394 load_instr
->variables
[0] = this->deref_head
;
1395 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1396 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1397 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
, bit_size
);
1400 return this->result
;
1404 type_is_float(glsl_base_type type
)
1406 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
||
1407 type
== GLSL_TYPE_FLOAT16
;
1411 type_is_signed(glsl_base_type type
)
1413 return type
== GLSL_TYPE_INT
|| type
== GLSL_TYPE_INT64
||
1414 type
== GLSL_TYPE_INT16
;
1418 nir_visitor::visit(ir_expression
*ir
)
1420 /* Some special cases */
1421 switch (ir
->operation
) {
1422 case ir_binop_ubo_load
: {
1423 nir_intrinsic_instr
*load
=
1424 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1425 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1426 load
->num_components
= ir
->type
->vector_elements
;
1427 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1428 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1429 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1432 * In UBO's, a true boolean value is any non-zero value, but we consider
1433 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1436 if (ir
->type
->is_boolean())
1437 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1442 case ir_unop_interpolate_at_centroid
:
1443 case ir_binop_interpolate_at_offset
:
1444 case ir_binop_interpolate_at_sample
: {
1445 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1446 ir_swizzle
*swizzle
= NULL
;
1448 /* the api does not allow a swizzle here, but the varying packing code
1449 * may have pushed one into here.
1451 swizzle
= ir
->operands
[0]->as_swizzle();
1453 deref
= swizzle
->val
->as_dereference();
1457 deref
->accept(this);
1459 nir_intrinsic_op op
;
1460 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1461 switch (ir
->operation
) {
1462 case ir_unop_interpolate_at_centroid
:
1463 op
= nir_intrinsic_interp_var_at_centroid
;
1465 case ir_binop_interpolate_at_offset
:
1466 op
= nir_intrinsic_interp_var_at_offset
;
1468 case ir_binop_interpolate_at_sample
:
1469 op
= nir_intrinsic_interp_var_at_sample
;
1472 unreachable("Invalid interpolation intrinsic");
1475 /* This case can happen if the vertex shader does not write the
1476 * given varying. In this case, the linker will lower it to a
1477 * global variable. Since interpolating a variable makes no
1478 * sense, we'll just turn it into a load which will probably
1479 * eventually end up as an SSA definition.
1481 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1482 op
= nir_intrinsic_load_var
;
1485 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1486 intrin
->num_components
= deref
->type
->vector_elements
;
1487 intrin
->variables
[0] = this->deref_head
;
1488 ralloc_steal(intrin
, intrin
->variables
[0]);
1490 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1491 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1492 intrin
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1494 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1495 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1498 unsigned swiz
[4] = {
1499 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1502 result
= nir_swizzle(&b
, result
, swiz
,
1503 swizzle
->type
->vector_elements
, false);
1513 nir_ssa_def
*srcs
[4];
1514 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1515 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1517 glsl_base_type types
[4];
1518 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1520 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1522 types
[i
] = GLSL_TYPE_FLOAT
;
1524 glsl_base_type out_type
;
1526 out_type
= ir
->type
->base_type
;
1528 out_type
= GLSL_TYPE_FLOAT
;
1530 switch (ir
->operation
) {
1531 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1532 case ir_unop_logic_not
:
1533 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1536 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1537 : nir_ineg(&b
, srcs
[0]);
1540 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1541 : nir_iabs(&b
, srcs
[0]);
1543 case ir_unop_saturate
:
1544 assert(type_is_float(types
[0]));
1545 result
= nir_fsat(&b
, srcs
[0]);
1548 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1549 : nir_isign(&b
, srcs
[0]);
1551 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1552 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1553 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1554 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1555 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1556 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1557 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1559 result
= supports_ints
? nir_i2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1562 result
= supports_ints
? nir_u2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1565 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1599 case ir_unop_i642u64
:
1600 case ir_unop_u642i64
: {
1601 nir_alu_type src_type
= nir_get_nir_type_for_glsl_base_type(types
[0]);
1602 nir_alu_type dst_type
= nir_get_nir_type_for_glsl_base_type(out_type
);
1603 result
= nir_build_alu(&b
, nir_type_conversion_op(src_type
, dst_type
,
1604 nir_rounding_mode_undef
),
1605 srcs
[0], NULL
, NULL
, NULL
);
1606 /* b2i and b2f don't have fixed bit-size versions so the builder will
1607 * just assume 32 and we have to fix it up here.
1609 result
->bit_size
= nir_alu_type_get_type_size(dst_type
);
1613 case ir_unop_bitcast_i2f
:
1614 case ir_unop_bitcast_f2i
:
1615 case ir_unop_bitcast_u2f
:
1616 case ir_unop_bitcast_f2u
:
1617 case ir_unop_bitcast_i642d
:
1618 case ir_unop_bitcast_d2i64
:
1619 case ir_unop_bitcast_u642d
:
1620 case ir_unop_bitcast_d2u64
:
1621 case ir_unop_subroutine_to_int
:
1623 result
= nir_imov(&b
, srcs
[0]);
1625 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1626 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1627 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1628 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1629 case ir_unop_frexp_exp
: result
= nir_frexp_exp(&b
, srcs
[0]); break;
1630 case ir_unop_frexp_sig
: result
= nir_frexp_sig(&b
, srcs
[0]); break;
1631 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1632 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1633 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1634 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1635 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1636 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1637 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1638 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1639 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1640 case ir_unop_pack_snorm_2x16
:
1641 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1643 case ir_unop_pack_snorm_4x8
:
1644 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1646 case ir_unop_pack_unorm_2x16
:
1647 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1649 case ir_unop_pack_unorm_4x8
:
1650 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1652 case ir_unop_pack_half_2x16
:
1653 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1655 case ir_unop_unpack_snorm_2x16
:
1656 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1658 case ir_unop_unpack_snorm_4x8
:
1659 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1661 case ir_unop_unpack_unorm_2x16
:
1662 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1664 case ir_unop_unpack_unorm_4x8
:
1665 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1667 case ir_unop_unpack_half_2x16
:
1668 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1670 case ir_unop_pack_sampler_2x32
:
1671 case ir_unop_pack_image_2x32
:
1672 case ir_unop_pack_double_2x32
:
1673 case ir_unop_pack_int_2x32
:
1674 case ir_unop_pack_uint_2x32
:
1675 result
= nir_pack_64_2x32(&b
, srcs
[0]);
1677 case ir_unop_unpack_sampler_2x32
:
1678 case ir_unop_unpack_image_2x32
:
1679 case ir_unop_unpack_double_2x32
:
1680 case ir_unop_unpack_int_2x32
:
1681 case ir_unop_unpack_uint_2x32
:
1682 result
= nir_unpack_64_2x32(&b
, srcs
[0]);
1684 case ir_unop_bitfield_reverse
:
1685 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1687 case ir_unop_bit_count
:
1688 result
= nir_bit_count(&b
, srcs
[0]);
1690 case ir_unop_find_msb
:
1692 case GLSL_TYPE_UINT
:
1693 result
= nir_ufind_msb(&b
, srcs
[0]);
1696 result
= nir_ifind_msb(&b
, srcs
[0]);
1699 unreachable("Invalid type for findMSB()");
1702 case ir_unop_find_lsb
:
1703 result
= nir_find_lsb(&b
, srcs
[0]);
1707 switch (ir
->type
->vector_elements
) {
1709 switch (ir
->operands
[0]->type
->vector_elements
) {
1710 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1711 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1712 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1713 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1714 default: unreachable("not reached");
1718 switch (ir
->operands
[0]->type
->vector_elements
) {
1719 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1720 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1721 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1722 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1723 default: unreachable("not reached");
1727 switch (ir
->operands
[0]->type
->vector_elements
) {
1728 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1729 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1730 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1731 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1732 default: unreachable("not reached");
1736 switch (ir
->operands
[0]->type
->vector_elements
) {
1737 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1738 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1739 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1740 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1741 default: unreachable("not reached");
1745 unreachable("not reached");
1748 case ir_unop_get_buffer_size
: {
1749 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1751 nir_intrinsic_get_buffer_size
);
1752 load
->num_components
= ir
->type
->vector_elements
;
1753 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1754 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1755 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1760 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1761 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1764 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1765 : nir_isub(&b
, srcs
[0], srcs
[1]);
1768 result
= type_is_float(out_type
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1769 : nir_imul(&b
, srcs
[0], srcs
[1]);
1772 if (type_is_float(out_type
))
1773 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1774 else if (type_is_signed(out_type
))
1775 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1777 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1780 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1781 : nir_umod(&b
, srcs
[0], srcs
[1]);
1784 if (type_is_float(out_type
))
1785 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1786 else if (type_is_signed(out_type
))
1787 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1789 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1792 if (type_is_float(out_type
))
1793 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1794 else if (type_is_signed(out_type
))
1795 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1797 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1799 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1800 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1801 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1802 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1803 case ir_binop_logic_and
:
1804 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1805 : nir_fand(&b
, srcs
[0], srcs
[1]);
1807 case ir_binop_logic_or
:
1808 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1809 : nir_for(&b
, srcs
[0], srcs
[1]);
1811 case ir_binop_logic_xor
:
1812 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1813 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1815 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1816 case ir_binop_rshift
:
1817 result
= (type_is_signed(out_type
)) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1818 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1820 case ir_binop_imul_high
:
1821 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1822 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1824 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1825 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1827 if (supports_ints
) {
1828 if (type_is_float(types
[0]))
1829 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1830 else if (type_is_signed(types
[0]))
1831 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1833 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1835 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1838 case ir_binop_gequal
:
1839 if (supports_ints
) {
1840 if (type_is_float(types
[0]))
1841 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1842 else if (type_is_signed(types
[0]))
1843 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1845 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1847 result
= nir_sge(&b
, srcs
[0], srcs
[1]);
1850 case ir_binop_equal
:
1851 if (supports_ints
) {
1852 if (type_is_float(types
[0]))
1853 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1855 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1857 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1860 case ir_binop_nequal
:
1861 if (supports_ints
) {
1862 if (type_is_float(types
[0]))
1863 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1865 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1867 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1870 case ir_binop_all_equal
:
1871 if (supports_ints
) {
1872 if (type_is_float(types
[0])) {
1873 switch (ir
->operands
[0]->type
->vector_elements
) {
1874 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1875 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1876 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1877 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1879 unreachable("not reached");
1882 switch (ir
->operands
[0]->type
->vector_elements
) {
1883 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1884 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1885 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1886 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1888 unreachable("not reached");
1892 switch (ir
->operands
[0]->type
->vector_elements
) {
1893 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1894 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1895 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1896 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1898 unreachable("not reached");
1902 case ir_binop_any_nequal
:
1903 if (supports_ints
) {
1904 if (type_is_float(types
[0])) {
1905 switch (ir
->operands
[0]->type
->vector_elements
) {
1906 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1907 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1908 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1909 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1911 unreachable("not reached");
1914 switch (ir
->operands
[0]->type
->vector_elements
) {
1915 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1916 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1917 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1918 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1920 unreachable("not reached");
1924 switch (ir
->operands
[0]->type
->vector_elements
) {
1925 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1926 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1927 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1928 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1930 unreachable("not reached");
1935 switch (ir
->operands
[0]->type
->vector_elements
) {
1936 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1937 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1938 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1940 unreachable("not reached");
1944 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1946 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1949 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1953 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1955 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1957 case ir_triop_bitfield_extract
:
1958 result
= (out_type
== GLSL_TYPE_INT
) ?
1959 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1960 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1962 case ir_quadop_bitfield_insert
:
1963 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1965 case ir_quadop_vector
:
1966 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1970 unreachable("not reached");
1975 nir_visitor::visit(ir_swizzle
*ir
)
1977 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1978 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1979 ir
->type
->vector_elements
, !supports_ints
);
1983 nir_visitor::visit(ir_texture
*ir
)
1990 num_srcs
= 1; /* coordinate */
1995 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1996 num_srcs
= 2; /* coordinate, bias/lod */
2000 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
2006 if (ir
->lod_info
.lod
!= NULL
)
2007 num_srcs
= 2; /* coordinate, lod */
2009 num_srcs
= 1; /* coordinate */
2013 op
= nir_texop_txf_ms
;
2014 num_srcs
= 2; /* coordinate, sample_index */
2019 if (ir
->lod_info
.lod
!= NULL
)
2020 num_srcs
= 1; /* lod */
2027 num_srcs
= 1; /* coordinate */
2032 num_srcs
= 1; /* coordinate */
2035 case ir_query_levels
:
2036 op
= nir_texop_query_levels
;
2040 case ir_texture_samples
:
2041 op
= nir_texop_texture_samples
;
2045 case ir_samples_identical
:
2046 op
= nir_texop_samples_identical
;
2047 num_srcs
= 1; /* coordinate */
2051 unreachable("not reached");
2054 if (ir
->projector
!= NULL
)
2056 if (ir
->shadow_comparator
!= NULL
)
2058 if (ir
->offset
!= NULL
)
2061 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
2064 instr
->sampler_dim
=
2065 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
2066 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
2067 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
2068 if (instr
->is_shadow
)
2069 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
2070 switch (ir
->type
->base_type
) {
2071 case GLSL_TYPE_FLOAT
:
2072 instr
->dest_type
= nir_type_float
;
2075 instr
->dest_type
= nir_type_int
;
2077 case GLSL_TYPE_BOOL
:
2078 case GLSL_TYPE_UINT
:
2079 instr
->dest_type
= nir_type_uint
;
2082 unreachable("not reached");
2085 instr
->texture
= evaluate_deref(&instr
->instr
, ir
->sampler
);
2087 unsigned src_number
= 0;
2089 if (ir
->coordinate
!= NULL
) {
2090 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
2091 instr
->src
[src_number
].src
=
2092 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
2093 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2097 if (ir
->projector
!= NULL
) {
2098 instr
->src
[src_number
].src
=
2099 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
2100 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2104 if (ir
->shadow_comparator
!= NULL
) {
2105 instr
->src
[src_number
].src
=
2106 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparator
));
2107 instr
->src
[src_number
].src_type
= nir_tex_src_comparator
;
2111 if (ir
->offset
!= NULL
) {
2112 /* we don't support multiple offsets yet */
2113 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2115 instr
->src
[src_number
].src
=
2116 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
2117 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2123 instr
->src
[src_number
].src
=
2124 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
2125 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2132 if (ir
->lod_info
.lod
!= NULL
) {
2133 instr
->src
[src_number
].src
=
2134 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
2135 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2141 instr
->src
[src_number
].src
=
2142 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
2143 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2145 instr
->src
[src_number
].src
=
2146 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
2147 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2152 instr
->src
[src_number
].src
=
2153 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
2154 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2159 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2166 assert(src_number
== num_srcs
);
2168 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2169 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2173 nir_visitor::visit(ir_constant
*ir
)
2176 * We don't know if this variable is an array or struct that gets
2177 * dereferenced, so do the safe thing an make it a variable with a
2178 * constant initializer and return a dereference.
2182 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2183 var
->data
.read_only
= true;
2184 var
->constant_initializer
= constant_copy(ir
, var
);
2186 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2187 this->deref_tail
= &this->deref_head
->deref
;
2191 nir_visitor::visit(ir_dereference_variable
*ir
)
2193 struct hash_entry
*entry
=
2194 _mesa_hash_table_search(this->var_table
, ir
->var
);
2196 nir_variable
*var
= (nir_variable
*) entry
->data
;
2198 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2199 this->deref_head
= deref
;
2200 this->deref_tail
= &deref
->deref
;
2204 nir_visitor::visit(ir_dereference_record
*ir
)
2206 ir
->record
->accept(this);
2208 int field_index
= ir
->field_idx
;
2209 assert(field_index
>= 0);
2211 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2212 deref
->deref
.type
= ir
->type
;
2213 this->deref_tail
->child
= &deref
->deref
;
2214 this->deref_tail
= &deref
->deref
;
2218 nir_visitor::visit(ir_dereference_array
*ir
)
2220 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2221 deref
->deref
.type
= ir
->type
;
2223 ir_constant
*const_index
= ir
->array_index
->as_constant();
2224 if (const_index
!= NULL
) {
2225 deref
->deref_array_type
= nir_deref_array_type_direct
;
2226 deref
->base_offset
= const_index
->value
.u
[0];
2228 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2230 nir_src_for_ssa(evaluate_rvalue(ir
->array_index
));
2233 ir
->array
->accept(this);
2235 this->deref_tail
->child
= &deref
->deref
;
2236 ralloc_steal(this->deref_tail
, deref
);
2237 this->deref_tail
= &deref
->deref
;
2241 nir_visitor::visit(ir_barrier
*)
2243 nir_intrinsic_instr
*instr
=
2244 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2245 nir_builder_instr_insert(&b
, &instr
->instr
);