2 * Copyright © 2014 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 * Connor Abbott (cwabbott0@gmail.com)
28 #include "glsl_to_nir.h"
29 #include "ir_visitor.h"
30 #include "ir_hierarchical_visitor.h"
32 #include "compiler/nir/nir_control_flow.h"
33 #include "compiler/nir/nir_builder.h"
34 #include "main/imports.h"
37 * pass to lower GLSL IR to NIR
39 * This will lower variable dereferences to loads/stores of corresponding
40 * variables in NIR - the variables will be converted to registers in a later
46 class nir_visitor
: public ir_visitor
49 nir_visitor(nir_shader
*shader
);
52 virtual void visit(ir_variable
*);
53 virtual void visit(ir_function
*);
54 virtual void visit(ir_function_signature
*);
55 virtual void visit(ir_loop
*);
56 virtual void visit(ir_if
*);
57 virtual void visit(ir_discard
*);
58 virtual void visit(ir_loop_jump
*);
59 virtual void visit(ir_return
*);
60 virtual void visit(ir_call
*);
61 virtual void visit(ir_assignment
*);
62 virtual void visit(ir_emit_vertex
*);
63 virtual void visit(ir_end_primitive
*);
64 virtual void visit(ir_expression
*);
65 virtual void visit(ir_swizzle
*);
66 virtual void visit(ir_texture
*);
67 virtual void visit(ir_constant
*);
68 virtual void visit(ir_dereference_variable
*);
69 virtual void visit(ir_dereference_record
*);
70 virtual void visit(ir_dereference_array
*);
71 virtual void visit(ir_barrier
*);
73 void create_function(ir_function_signature
*ir
);
76 void add_instr(nir_instr
*instr
, unsigned num_components
, unsigned bit_size
);
77 nir_ssa_def
*evaluate_rvalue(ir_rvalue
*ir
);
79 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
**srcs
);
80 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
);
81 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
83 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
84 nir_ssa_def
*src2
, nir_ssa_def
*src3
);
89 nir_function_impl
*impl
;
91 nir_ssa_def
*result
; /* result of the expression tree last visited */
93 nir_deref_var
*evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
);
95 /* the head of the dereference chain we're creating */
96 nir_deref_var
*deref_head
;
97 /* the tail of the dereference chain we're creating */
98 nir_deref
*deref_tail
;
100 nir_variable
*var
; /* variable created by ir_variable visitor */
102 /* whether the IR we're operating on is per-function or global */
105 /* map of ir_variable -> nir_variable */
106 struct hash_table
*var_table
;
108 /* map of ir_function_signature -> nir_function_overload */
109 struct hash_table
*overload_table
;
113 * This visitor runs before the main visitor, calling create_function() for
114 * each function so that the main visitor can resolve forward references in
118 class nir_function_visitor
: public ir_hierarchical_visitor
121 nir_function_visitor(nir_visitor
*v
) : visitor(v
)
124 virtual ir_visitor_status
visit_enter(ir_function
*);
127 nir_visitor
*visitor
;
130 } /* end of anonymous namespace */
133 nir_remap_attributes(nir_shader
*shader
)
135 nir_foreach_variable(var
, &shader
->inputs
) {
136 var
->data
.location
+= _mesa_bitcount_64(shader
->info
->double_inputs_read
&
137 BITFIELD64_MASK(var
->data
.location
));
140 /* Once the remap is done, reset double_inputs_read, so later it will have
141 * which location/slots are doubles */
142 shader
->info
->double_inputs_read
= 0;
146 glsl_to_nir(const struct gl_shader_program
*shader_prog
,
147 gl_shader_stage stage
,
148 const nir_shader_compiler_options
*options
)
150 struct gl_linked_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
152 nir_shader
*shader
= nir_shader_create(NULL
, stage
, options
,
155 nir_visitor
v1(shader
);
156 nir_function_visitor
v2(&v1
);
158 visit_exec_list(sh
->ir
, &v1
);
160 nir_lower_constant_initializers(shader
, (nir_variable_mode
)~0);
162 /* Remap the locations to slots so those requiring two slots will occupy
163 * two locations. For instance, if we have in the IR code a dvec3 attr0 in
164 * location 0 and vec4 attr1 in location 1, in NIR attr0 will use
165 * locations/slots 0 and 1, and attr1 will use location/slot 2 */
166 if (shader
->stage
== MESA_SHADER_VERTEX
)
167 nir_remap_attributes(shader
);
169 shader
->info
->name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
170 if (shader_prog
->Label
)
171 shader
->info
->label
= ralloc_strdup(shader
, shader_prog
->Label
);
172 shader
->info
->clip_distance_array_size
= sh
->Program
->ClipDistanceArraySize
;
173 shader
->info
->cull_distance_array_size
= sh
->Program
->CullDistanceArraySize
;
174 shader
->info
->has_transform_feedback_varyings
=
175 shader_prog
->TransformFeedback
.NumVarying
> 0;
180 nir_visitor::nir_visitor(nir_shader
*shader
)
182 this->supports_ints
= shader
->options
->native_integers
;
183 this->shader
= shader
;
184 this->is_global
= true;
185 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
186 _mesa_key_pointer_equal
);
187 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
188 _mesa_key_pointer_equal
);
192 this->deref_head
= NULL
;
193 this->deref_tail
= NULL
;
194 memset(&this->b
, 0, sizeof(this->b
));
197 nir_visitor::~nir_visitor()
199 _mesa_hash_table_destroy(this->var_table
, NULL
);
200 _mesa_hash_table_destroy(this->overload_table
, NULL
);
204 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
207 ralloc_steal(mem_ctx
, this->deref_head
);
208 return this->deref_head
;
211 static nir_constant
*
212 constant_copy(ir_constant
*ir
, void *mem_ctx
)
217 nir_constant
*ret
= ralloc(mem_ctx
, nir_constant
);
219 const unsigned rows
= ir
->type
->vector_elements
;
220 const unsigned cols
= ir
->type
->matrix_columns
;
223 ret
->num_elements
= 0;
224 switch (ir
->type
->base_type
) {
226 /* Only float base types can be matrices. */
229 for (unsigned r
= 0; r
< rows
; r
++)
230 ret
->values
[0].u32
[r
] = ir
->value
.u
[r
];
235 /* Only float base types can be matrices. */
238 for (unsigned r
= 0; r
< rows
; r
++)
239 ret
->values
[0].i32
[r
] = ir
->value
.i
[r
];
243 case GLSL_TYPE_FLOAT
:
244 for (unsigned c
= 0; c
< cols
; c
++) {
245 for (unsigned r
= 0; r
< rows
; r
++)
246 ret
->values
[c
].f32
[r
] = ir
->value
.f
[c
* rows
+ r
];
250 case GLSL_TYPE_DOUBLE
:
251 for (unsigned c
= 0; c
< cols
; c
++) {
252 for (unsigned r
= 0; r
< rows
; r
++)
253 ret
->values
[c
].f64
[r
] = ir
->value
.d
[c
* rows
+ r
];
258 /* Only float base types can be matrices. */
261 for (unsigned r
= 0; r
< rows
; r
++)
262 ret
->values
[0].u32
[r
] = ir
->value
.b
[r
] ? NIR_TRUE
: NIR_FALSE
;
266 case GLSL_TYPE_STRUCT
:
267 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
269 ret
->num_elements
= ir
->type
->length
;
272 foreach_in_list(ir_constant
, field
, &ir
->components
) {
273 ret
->elements
[i
] = constant_copy(field
, mem_ctx
);
278 case GLSL_TYPE_ARRAY
:
279 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
281 ret
->num_elements
= ir
->type
->length
;
283 for (i
= 0; i
< ir
->type
->length
; i
++)
284 ret
->elements
[i
] = constant_copy(ir
->array_elements
[i
], mem_ctx
);
288 unreachable("not reached");
295 nir_visitor::visit(ir_variable
*ir
)
297 nir_variable
*var
= ralloc(shader
, nir_variable
);
298 var
->type
= ir
->type
;
299 var
->name
= ralloc_strdup(var
, ir
->name
);
301 var
->data
.read_only
= ir
->data
.read_only
;
302 var
->data
.centroid
= ir
->data
.centroid
;
303 var
->data
.sample
= ir
->data
.sample
;
304 var
->data
.patch
= ir
->data
.patch
;
305 var
->data
.invariant
= ir
->data
.invariant
;
306 var
->data
.location
= ir
->data
.location
;
307 var
->data
.compact
= false;
309 switch(ir
->data
.mode
) {
311 case ir_var_temporary
:
313 var
->data
.mode
= nir_var_global
;
315 var
->data
.mode
= nir_var_local
;
318 case ir_var_function_in
:
319 case ir_var_function_out
:
320 case ir_var_function_inout
:
321 case ir_var_const_in
:
322 var
->data
.mode
= nir_var_local
;
325 case ir_var_shader_in
:
326 if (shader
->stage
== MESA_SHADER_FRAGMENT
&&
327 ir
->data
.location
== VARYING_SLOT_FACE
) {
328 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
329 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
330 var
->data
.mode
= nir_var_system_value
;
331 } else if (shader
->stage
== MESA_SHADER_GEOMETRY
&&
332 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
333 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
334 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
335 var
->data
.mode
= nir_var_system_value
;
337 var
->data
.mode
= nir_var_shader_in
;
339 if (shader
->stage
== MESA_SHADER_TESS_EVAL
&&
340 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
341 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
342 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
346 /* Mark all the locations that require two slots */
347 if (glsl_type_is_dual_slot(glsl_without_array(var
->type
))) {
348 for (uint i
= 0; i
< glsl_count_attribute_slots(var
->type
, true); i
++) {
349 uint64_t bitfield
= BITFIELD64_BIT(var
->data
.location
+ i
);
350 shader
->info
->double_inputs_read
|= bitfield
;
355 case ir_var_shader_out
:
356 var
->data
.mode
= nir_var_shader_out
;
357 if (shader
->stage
== MESA_SHADER_TESS_CTRL
&&
358 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
359 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
360 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
365 var
->data
.mode
= nir_var_uniform
;
368 case ir_var_shader_storage
:
369 var
->data
.mode
= nir_var_shader_storage
;
372 case ir_var_system_value
:
373 var
->data
.mode
= nir_var_system_value
;
377 unreachable("not reached");
380 var
->data
.interpolation
= ir
->data
.interpolation
;
381 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
382 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
383 var
->data
.location_frac
= ir
->data
.location_frac
;
385 switch (ir
->data
.depth_layout
) {
386 case ir_depth_layout_none
:
387 var
->data
.depth_layout
= nir_depth_layout_none
;
389 case ir_depth_layout_any
:
390 var
->data
.depth_layout
= nir_depth_layout_any
;
392 case ir_depth_layout_greater
:
393 var
->data
.depth_layout
= nir_depth_layout_greater
;
395 case ir_depth_layout_less
:
396 var
->data
.depth_layout
= nir_depth_layout_less
;
398 case ir_depth_layout_unchanged
:
399 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
402 unreachable("not reached");
405 var
->data
.index
= ir
->data
.index
;
406 var
->data
.binding
= ir
->data
.binding
;
407 var
->data
.offset
= ir
->data
.offset
;
408 var
->data
.image
.read_only
= ir
->data
.image_read_only
;
409 var
->data
.image
.write_only
= ir
->data
.image_write_only
;
410 var
->data
.image
.coherent
= ir
->data
.image_coherent
;
411 var
->data
.image
._volatile
= ir
->data
.image_volatile
;
412 var
->data
.image
.restrict_flag
= ir
->data
.image_restrict
;
413 var
->data
.image
.format
= ir
->data
.image_format
;
414 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
416 var
->num_state_slots
= ir
->get_num_state_slots();
417 if (var
->num_state_slots
> 0) {
418 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
419 var
->num_state_slots
);
421 ir_state_slot
*state_slots
= ir
->get_state_slots();
422 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
423 for (unsigned j
= 0; j
< 5; j
++)
424 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
425 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
428 var
->state_slots
= NULL
;
431 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
433 var
->interface_type
= ir
->get_interface_type();
435 if (var
->data
.mode
== nir_var_local
)
436 nir_function_impl_add_variable(impl
, var
);
438 nir_shader_add_variable(shader
, var
);
440 _mesa_hash_table_insert(var_table
, ir
, var
);
445 nir_function_visitor::visit_enter(ir_function
*ir
)
447 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
448 visitor
->create_function(sig
);
450 return visit_continue_with_parent
;
454 nir_visitor::create_function(ir_function_signature
*ir
)
456 if (ir
->is_intrinsic())
459 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
461 assert(ir
->parameters
.is_empty());
462 assert(ir
->return_type
== glsl_type::void_type
);
464 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
468 nir_visitor::visit(ir_function
*ir
)
470 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
475 nir_visitor::visit(ir_function_signature
*ir
)
477 if (ir
->is_intrinsic())
480 struct hash_entry
*entry
=
481 _mesa_hash_table_search(this->overload_table
, ir
);
484 nir_function
*func
= (nir_function
*) entry
->data
;
486 if (ir
->is_defined
) {
487 nir_function_impl
*impl
= nir_function_impl_create(func
);
490 assert(strcmp(func
->name
, "main") == 0);
491 assert(ir
->parameters
.is_empty());
492 assert(func
->return_type
== glsl_type::void_type
);
494 this->is_global
= false;
496 nir_builder_init(&b
, impl
);
497 b
.cursor
= nir_after_cf_list(&impl
->body
);
498 visit_exec_list(&ir
->body
, this);
500 this->is_global
= true;
507 nir_visitor::visit(ir_loop
*ir
)
509 nir_loop
*loop
= nir_loop_create(this->shader
);
510 nir_builder_cf_insert(&b
, &loop
->cf_node
);
512 b
.cursor
= nir_after_cf_list(&loop
->body
);
513 visit_exec_list(&ir
->body_instructions
, this);
514 b
.cursor
= nir_after_cf_node(&loop
->cf_node
);
518 nir_visitor::visit(ir_if
*ir
)
521 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
523 nir_if
*if_stmt
= nir_if_create(this->shader
);
524 if_stmt
->condition
= condition
;
525 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
527 b
.cursor
= nir_after_cf_list(&if_stmt
->then_list
);
528 visit_exec_list(&ir
->then_instructions
, this);
530 b
.cursor
= nir_after_cf_list(&if_stmt
->else_list
);
531 visit_exec_list(&ir
->else_instructions
, this);
533 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
537 nir_visitor::visit(ir_discard
*ir
)
540 * discards aren't treated as control flow, because before we lower them
541 * they can appear anywhere in the shader and the stuff after them may still
542 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
543 * discards will be immediately followed by a return.
546 nir_intrinsic_instr
*discard
;
548 discard
= nir_intrinsic_instr_create(this->shader
,
549 nir_intrinsic_discard_if
);
551 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
553 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
556 nir_builder_instr_insert(&b
, &discard
->instr
);
560 nir_visitor::visit(ir_emit_vertex
*ir
)
562 nir_intrinsic_instr
*instr
=
563 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
564 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
565 nir_builder_instr_insert(&b
, &instr
->instr
);
569 nir_visitor::visit(ir_end_primitive
*ir
)
571 nir_intrinsic_instr
*instr
=
572 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
573 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
574 nir_builder_instr_insert(&b
, &instr
->instr
);
578 nir_visitor::visit(ir_loop_jump
*ir
)
582 case ir_loop_jump::jump_break
:
583 type
= nir_jump_break
;
585 case ir_loop_jump::jump_continue
:
586 type
= nir_jump_continue
;
589 unreachable("not reached");
592 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
593 nir_builder_instr_insert(&b
, &instr
->instr
);
597 nir_visitor::visit(ir_return
*ir
)
599 if (ir
->value
!= NULL
) {
600 nir_intrinsic_instr
*copy
=
601 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
603 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
604 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
607 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
608 nir_builder_instr_insert(&b
, &instr
->instr
);
612 nir_visitor::visit(ir_call
*ir
)
614 if (ir
->callee
->is_intrinsic()) {
617 switch (ir
->callee
->intrinsic_id
) {
618 case ir_intrinsic_atomic_counter_read
:
619 op
= nir_intrinsic_atomic_counter_read_var
;
621 case ir_intrinsic_atomic_counter_increment
:
622 op
= nir_intrinsic_atomic_counter_inc_var
;
624 case ir_intrinsic_atomic_counter_predecrement
:
625 op
= nir_intrinsic_atomic_counter_dec_var
;
627 case ir_intrinsic_atomic_counter_add
:
628 op
= nir_intrinsic_atomic_counter_add_var
;
630 case ir_intrinsic_atomic_counter_and
:
631 op
= nir_intrinsic_atomic_counter_and_var
;
633 case ir_intrinsic_atomic_counter_or
:
634 op
= nir_intrinsic_atomic_counter_or_var
;
636 case ir_intrinsic_atomic_counter_xor
:
637 op
= nir_intrinsic_atomic_counter_xor_var
;
639 case ir_intrinsic_atomic_counter_min
:
640 op
= nir_intrinsic_atomic_counter_min_var
;
642 case ir_intrinsic_atomic_counter_max
:
643 op
= nir_intrinsic_atomic_counter_max_var
;
645 case ir_intrinsic_atomic_counter_exchange
:
646 op
= nir_intrinsic_atomic_counter_exchange_var
;
648 case ir_intrinsic_atomic_counter_comp_swap
:
649 op
= nir_intrinsic_atomic_counter_comp_swap_var
;
651 case ir_intrinsic_image_load
:
652 op
= nir_intrinsic_image_load
;
654 case ir_intrinsic_image_store
:
655 op
= nir_intrinsic_image_store
;
657 case ir_intrinsic_image_atomic_add
:
658 op
= nir_intrinsic_image_atomic_add
;
660 case ir_intrinsic_image_atomic_min
:
661 op
= nir_intrinsic_image_atomic_min
;
663 case ir_intrinsic_image_atomic_max
:
664 op
= nir_intrinsic_image_atomic_max
;
666 case ir_intrinsic_image_atomic_and
:
667 op
= nir_intrinsic_image_atomic_and
;
669 case ir_intrinsic_image_atomic_or
:
670 op
= nir_intrinsic_image_atomic_or
;
672 case ir_intrinsic_image_atomic_xor
:
673 op
= nir_intrinsic_image_atomic_xor
;
675 case ir_intrinsic_image_atomic_exchange
:
676 op
= nir_intrinsic_image_atomic_exchange
;
678 case ir_intrinsic_image_atomic_comp_swap
:
679 op
= nir_intrinsic_image_atomic_comp_swap
;
681 case ir_intrinsic_memory_barrier
:
682 op
= nir_intrinsic_memory_barrier
;
684 case ir_intrinsic_image_size
:
685 op
= nir_intrinsic_image_size
;
687 case ir_intrinsic_image_samples
:
688 op
= nir_intrinsic_image_samples
;
690 case ir_intrinsic_ssbo_store
:
691 op
= nir_intrinsic_store_ssbo
;
693 case ir_intrinsic_ssbo_load
:
694 op
= nir_intrinsic_load_ssbo
;
696 case ir_intrinsic_ssbo_atomic_add
:
697 op
= nir_intrinsic_ssbo_atomic_add
;
699 case ir_intrinsic_ssbo_atomic_and
:
700 op
= nir_intrinsic_ssbo_atomic_and
;
702 case ir_intrinsic_ssbo_atomic_or
:
703 op
= nir_intrinsic_ssbo_atomic_or
;
705 case ir_intrinsic_ssbo_atomic_xor
:
706 op
= nir_intrinsic_ssbo_atomic_xor
;
708 case ir_intrinsic_ssbo_atomic_min
:
709 assert(ir
->return_deref
);
710 if (ir
->return_deref
->type
== glsl_type::int_type
)
711 op
= nir_intrinsic_ssbo_atomic_imin
;
712 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
713 op
= nir_intrinsic_ssbo_atomic_umin
;
715 unreachable("Invalid type");
717 case ir_intrinsic_ssbo_atomic_max
:
718 assert(ir
->return_deref
);
719 if (ir
->return_deref
->type
== glsl_type::int_type
)
720 op
= nir_intrinsic_ssbo_atomic_imax
;
721 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
722 op
= nir_intrinsic_ssbo_atomic_umax
;
724 unreachable("Invalid type");
726 case ir_intrinsic_ssbo_atomic_exchange
:
727 op
= nir_intrinsic_ssbo_atomic_exchange
;
729 case ir_intrinsic_ssbo_atomic_comp_swap
:
730 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
732 case ir_intrinsic_shader_clock
:
733 op
= nir_intrinsic_shader_clock
;
735 case ir_intrinsic_group_memory_barrier
:
736 op
= nir_intrinsic_group_memory_barrier
;
738 case ir_intrinsic_memory_barrier_atomic_counter
:
739 op
= nir_intrinsic_memory_barrier_atomic_counter
;
741 case ir_intrinsic_memory_barrier_buffer
:
742 op
= nir_intrinsic_memory_barrier_buffer
;
744 case ir_intrinsic_memory_barrier_image
:
745 op
= nir_intrinsic_memory_barrier_image
;
747 case ir_intrinsic_memory_barrier_shared
:
748 op
= nir_intrinsic_memory_barrier_shared
;
750 case ir_intrinsic_shared_load
:
751 op
= nir_intrinsic_load_shared
;
753 case ir_intrinsic_shared_store
:
754 op
= nir_intrinsic_store_shared
;
756 case ir_intrinsic_shared_atomic_add
:
757 op
= nir_intrinsic_shared_atomic_add
;
759 case ir_intrinsic_shared_atomic_and
:
760 op
= nir_intrinsic_shared_atomic_and
;
762 case ir_intrinsic_shared_atomic_or
:
763 op
= nir_intrinsic_shared_atomic_or
;
765 case ir_intrinsic_shared_atomic_xor
:
766 op
= nir_intrinsic_shared_atomic_xor
;
768 case ir_intrinsic_shared_atomic_min
:
769 assert(ir
->return_deref
);
770 if (ir
->return_deref
->type
== glsl_type::int_type
)
771 op
= nir_intrinsic_shared_atomic_imin
;
772 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
773 op
= nir_intrinsic_shared_atomic_umin
;
775 unreachable("Invalid type");
777 case ir_intrinsic_shared_atomic_max
:
778 assert(ir
->return_deref
);
779 if (ir
->return_deref
->type
== glsl_type::int_type
)
780 op
= nir_intrinsic_shared_atomic_imax
;
781 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
782 op
= nir_intrinsic_shared_atomic_umax
;
784 unreachable("Invalid type");
786 case ir_intrinsic_shared_atomic_exchange
:
787 op
= nir_intrinsic_shared_atomic_exchange
;
789 case ir_intrinsic_shared_atomic_comp_swap
:
790 op
= nir_intrinsic_shared_atomic_comp_swap
;
793 unreachable("not reached");
796 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
797 nir_dest
*dest
= &instr
->dest
;
800 case nir_intrinsic_atomic_counter_read_var
:
801 case nir_intrinsic_atomic_counter_inc_var
:
802 case nir_intrinsic_atomic_counter_dec_var
:
803 case nir_intrinsic_atomic_counter_add_var
:
804 case nir_intrinsic_atomic_counter_min_var
:
805 case nir_intrinsic_atomic_counter_max_var
:
806 case nir_intrinsic_atomic_counter_and_var
:
807 case nir_intrinsic_atomic_counter_or_var
:
808 case nir_intrinsic_atomic_counter_xor_var
:
809 case nir_intrinsic_atomic_counter_exchange_var
:
810 case nir_intrinsic_atomic_counter_comp_swap_var
: {
811 /* Set the counter variable dereference. */
812 exec_node
*param
= ir
->actual_parameters
.get_head();
813 ir_dereference
*counter
= (ir_dereference
*)param
;
815 instr
->variables
[0] = evaluate_deref(&instr
->instr
, counter
);
816 param
= param
->get_next();
818 /* Set the intrinsic destination. */
819 if (ir
->return_deref
) {
820 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
823 /* Set the intrinsic parameters. */
824 if (!param
->is_tail_sentinel()) {
826 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
827 param
= param
->get_next();
830 if (!param
->is_tail_sentinel()) {
832 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
833 param
= param
->get_next();
836 nir_builder_instr_insert(&b
, &instr
->instr
);
839 case nir_intrinsic_image_load
:
840 case nir_intrinsic_image_store
:
841 case nir_intrinsic_image_atomic_add
:
842 case nir_intrinsic_image_atomic_min
:
843 case nir_intrinsic_image_atomic_max
:
844 case nir_intrinsic_image_atomic_and
:
845 case nir_intrinsic_image_atomic_or
:
846 case nir_intrinsic_image_atomic_xor
:
847 case nir_intrinsic_image_atomic_exchange
:
848 case nir_intrinsic_image_atomic_comp_swap
:
849 case nir_intrinsic_image_samples
:
850 case nir_intrinsic_image_size
: {
851 nir_ssa_undef_instr
*instr_undef
=
852 nir_ssa_undef_instr_create(shader
, 1, 32);
853 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
855 /* Set the image variable dereference. */
856 exec_node
*param
= ir
->actual_parameters
.get_head();
857 ir_dereference
*image
= (ir_dereference
*)param
;
858 const glsl_type
*type
=
859 image
->variable_referenced()->type
->without_array();
861 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
862 param
= param
->get_next();
864 /* Set the intrinsic destination. */
865 if (ir
->return_deref
) {
866 const nir_intrinsic_info
*info
=
867 &nir_intrinsic_infos
[instr
->intrinsic
];
868 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
869 info
->dest_components
, 32, NULL
);
872 if (op
== nir_intrinsic_image_size
||
873 op
== nir_intrinsic_image_samples
) {
874 nir_builder_instr_insert(&b
, &instr
->instr
);
878 /* Set the address argument, extending the coordinate vector to four
881 nir_ssa_def
*src_addr
=
882 evaluate_rvalue((ir_dereference
*)param
);
883 nir_ssa_def
*srcs
[4];
885 for (int i
= 0; i
< 4; i
++) {
886 if (i
< type
->coordinate_components())
887 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
889 srcs
[i
] = &instr_undef
->def
;
892 instr
->src
[0] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
893 param
= param
->get_next();
895 /* Set the sample argument, which is undefined for single-sample
898 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
900 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
901 param
= param
->get_next();
903 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
906 /* Set the intrinsic parameters. */
907 if (!param
->is_tail_sentinel()) {
909 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
910 param
= param
->get_next();
913 if (!param
->is_tail_sentinel()) {
915 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
916 param
= param
->get_next();
918 nir_builder_instr_insert(&b
, &instr
->instr
);
921 case nir_intrinsic_memory_barrier
:
922 case nir_intrinsic_group_memory_barrier
:
923 case nir_intrinsic_memory_barrier_atomic_counter
:
924 case nir_intrinsic_memory_barrier_buffer
:
925 case nir_intrinsic_memory_barrier_image
:
926 case nir_intrinsic_memory_barrier_shared
:
927 nir_builder_instr_insert(&b
, &instr
->instr
);
929 case nir_intrinsic_shader_clock
:
930 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
931 nir_builder_instr_insert(&b
, &instr
->instr
);
933 case nir_intrinsic_store_ssbo
: {
934 exec_node
*param
= ir
->actual_parameters
.get_head();
935 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
937 param
= param
->get_next();
938 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
940 param
= param
->get_next();
941 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
943 param
= param
->get_next();
944 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
947 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
948 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
949 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
950 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
951 instr
->num_components
= val
->type
->vector_elements
;
953 nir_builder_instr_insert(&b
, &instr
->instr
);
956 case nir_intrinsic_load_ssbo
: {
957 exec_node
*param
= ir
->actual_parameters
.get_head();
958 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
960 param
= param
->get_next();
961 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
963 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
964 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
966 const glsl_type
*type
= ir
->return_deref
->var
->type
;
967 instr
->num_components
= type
->vector_elements
;
969 /* Setup destination register */
970 unsigned bit_size
= glsl_get_bit_size(type
);
971 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
972 type
->vector_elements
, bit_size
, NULL
);
974 /* Insert the created nir instruction now since in the case of boolean
975 * result we will need to emit another instruction after it
977 nir_builder_instr_insert(&b
, &instr
->instr
);
980 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
981 * consider a true boolean to be ~0. Fix this up with a != 0
984 if (type
->base_type
== GLSL_TYPE_BOOL
) {
985 nir_alu_instr
*load_ssbo_compare
=
986 nir_alu_instr_create(shader
, nir_op_ine
);
987 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
988 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
989 load_ssbo_compare
->src
[1].src
=
990 nir_src_for_ssa(nir_imm_int(&b
, 0));
991 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
992 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
993 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
994 &load_ssbo_compare
->dest
.dest
,
995 type
->vector_elements
, bit_size
, NULL
);
996 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
997 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
998 dest
= &load_ssbo_compare
->dest
.dest
;
1002 case nir_intrinsic_ssbo_atomic_add
:
1003 case nir_intrinsic_ssbo_atomic_imin
:
1004 case nir_intrinsic_ssbo_atomic_umin
:
1005 case nir_intrinsic_ssbo_atomic_imax
:
1006 case nir_intrinsic_ssbo_atomic_umax
:
1007 case nir_intrinsic_ssbo_atomic_and
:
1008 case nir_intrinsic_ssbo_atomic_or
:
1009 case nir_intrinsic_ssbo_atomic_xor
:
1010 case nir_intrinsic_ssbo_atomic_exchange
:
1011 case nir_intrinsic_ssbo_atomic_comp_swap
: {
1012 int param_count
= ir
->actual_parameters
.length();
1013 assert(param_count
== 3 || param_count
== 4);
1016 exec_node
*param
= ir
->actual_parameters
.get_head();
1017 ir_instruction
*inst
= (ir_instruction
*) param
;
1018 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1021 param
= param
->get_next();
1022 inst
= (ir_instruction
*) param
;
1023 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1025 /* data1 parameter (this is always present) */
1026 param
= param
->get_next();
1027 inst
= (ir_instruction
*) param
;
1028 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1030 /* data2 parameter (only with atomic_comp_swap) */
1031 if (param_count
== 4) {
1032 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
1033 param
= param
->get_next();
1034 inst
= (ir_instruction
*) param
;
1035 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1039 assert(ir
->return_deref
);
1040 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1041 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1042 nir_builder_instr_insert(&b
, &instr
->instr
);
1045 case nir_intrinsic_load_shared
: {
1046 exec_node
*param
= ir
->actual_parameters
.get_head();
1047 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1049 nir_intrinsic_set_base(instr
, 0);
1050 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1052 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1053 instr
->num_components
= type
->vector_elements
;
1055 /* Setup destination register */
1056 unsigned bit_size
= glsl_get_bit_size(type
);
1057 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1058 type
->vector_elements
, bit_size
, NULL
);
1060 nir_builder_instr_insert(&b
, &instr
->instr
);
1063 case nir_intrinsic_store_shared
: {
1064 exec_node
*param
= ir
->actual_parameters
.get_head();
1065 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1067 param
= param
->get_next();
1068 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1070 param
= param
->get_next();
1071 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1074 nir_intrinsic_set_base(instr
, 0);
1075 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1077 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1079 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1080 instr
->num_components
= val
->type
->vector_elements
;
1082 nir_builder_instr_insert(&b
, &instr
->instr
);
1085 case nir_intrinsic_shared_atomic_add
:
1086 case nir_intrinsic_shared_atomic_imin
:
1087 case nir_intrinsic_shared_atomic_umin
:
1088 case nir_intrinsic_shared_atomic_imax
:
1089 case nir_intrinsic_shared_atomic_umax
:
1090 case nir_intrinsic_shared_atomic_and
:
1091 case nir_intrinsic_shared_atomic_or
:
1092 case nir_intrinsic_shared_atomic_xor
:
1093 case nir_intrinsic_shared_atomic_exchange
:
1094 case nir_intrinsic_shared_atomic_comp_swap
: {
1095 int param_count
= ir
->actual_parameters
.length();
1096 assert(param_count
== 2 || param_count
== 3);
1099 exec_node
*param
= ir
->actual_parameters
.get_head();
1100 ir_instruction
*inst
= (ir_instruction
*) param
;
1101 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1103 /* data1 parameter (this is always present) */
1104 param
= param
->get_next();
1105 inst
= (ir_instruction
*) param
;
1106 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1108 /* data2 parameter (only with atomic_comp_swap) */
1109 if (param_count
== 3) {
1110 assert(op
== nir_intrinsic_shared_atomic_comp_swap
);
1111 param
= param
->get_next();
1112 inst
= (ir_instruction
*) param
;
1114 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1118 assert(ir
->return_deref
);
1119 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1120 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1121 ir
->return_deref
->type
->vector_elements
,
1123 nir_builder_instr_insert(&b
, &instr
->instr
);
1127 unreachable("not reached");
1130 if (ir
->return_deref
) {
1131 nir_intrinsic_instr
*store_instr
=
1132 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
1133 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1134 nir_intrinsic_set_write_mask(store_instr
,
1135 (1 << store_instr
->num_components
) - 1);
1137 store_instr
->variables
[0] =
1138 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
1139 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
1141 nir_builder_instr_insert(&b
, &store_instr
->instr
);
1147 struct hash_entry
*entry
=
1148 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1150 nir_function
*callee
= (nir_function
*) entry
->data
;
1152 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
1155 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
1156 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
1160 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
1161 nir_builder_instr_insert(&b
, &instr
->instr
);
1165 nir_visitor::visit(ir_assignment
*ir
)
1167 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1169 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1170 ir
->lhs
->variable_referenced()->data
.precise
;
1172 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1173 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1174 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1175 nir_intrinsic_instr
*copy
=
1176 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1178 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1179 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1181 if (ir
->condition
) {
1182 nir_if
*if_stmt
= nir_if_create(this->shader
);
1183 if_stmt
->condition
= nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
1184 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
1185 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, ©
->instr
);
1186 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
1188 nir_builder_instr_insert(&b
, ©
->instr
);
1193 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1195 ir
->lhs
->accept(this);
1196 nir_deref_var
*lhs_deref
= this->deref_head
;
1197 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1199 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1200 /* GLSL IR will give us the input to the write-masked assignment in a
1201 * single packed vector. So, for example, if the writemask is xzw, then
1202 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1206 unsigned component
= 0;
1207 for (unsigned i
= 0; i
< 4; i
++) {
1208 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1210 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1213 nir_intrinsic_instr
*store
=
1214 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1215 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1216 nir_intrinsic_set_write_mask(store
, ir
->write_mask
);
1217 store
->variables
[0] = nir_deref_var_clone(lhs_deref
, store
);
1218 store
->src
[0] = nir_src_for_ssa(src
);
1220 if (ir
->condition
) {
1221 nir_if
*if_stmt
= nir_if_create(this->shader
);
1222 if_stmt
->condition
= nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
1223 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
1224 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, &store
->instr
);
1225 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
1227 nir_builder_instr_insert(&b
, &store
->instr
);
1232 * Given an instruction, returns a pointer to its destination or NULL if there
1233 * is no destination.
1235 * Note that this only handles instructions we generate at this level.
1238 get_instr_dest(nir_instr
*instr
)
1240 nir_alu_instr
*alu_instr
;
1241 nir_intrinsic_instr
*intrinsic_instr
;
1242 nir_tex_instr
*tex_instr
;
1244 switch (instr
->type
) {
1245 case nir_instr_type_alu
:
1246 alu_instr
= nir_instr_as_alu(instr
);
1247 return &alu_instr
->dest
.dest
;
1249 case nir_instr_type_intrinsic
:
1250 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1251 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1252 return &intrinsic_instr
->dest
;
1256 case nir_instr_type_tex
:
1257 tex_instr
= nir_instr_as_tex(instr
);
1258 return &tex_instr
->dest
;
1261 unreachable("not reached");
1268 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1271 nir_dest
*dest
= get_instr_dest(instr
);
1274 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1276 nir_builder_instr_insert(&b
, instr
);
1279 assert(dest
->is_ssa
);
1280 this->result
= &dest
->ssa
;
1285 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1288 if (ir
->as_dereference() || ir
->as_constant()) {
1290 * A dereference is being used on the right hand side, which means we
1291 * must emit a variable load.
1294 nir_intrinsic_instr
*load_instr
=
1295 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1296 load_instr
->num_components
= ir
->type
->vector_elements
;
1297 load_instr
->variables
[0] = this->deref_head
;
1298 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1299 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1300 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
, bit_size
);
1303 return this->result
;
1307 type_is_float(glsl_base_type type
)
1309 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
;
1313 nir_visitor::visit(ir_expression
*ir
)
1315 /* Some special cases */
1316 switch (ir
->operation
) {
1317 case ir_binop_ubo_load
: {
1318 nir_intrinsic_instr
*load
=
1319 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1320 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1321 load
->num_components
= ir
->type
->vector_elements
;
1322 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1323 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1324 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1327 * In UBO's, a true boolean value is any non-zero value, but we consider
1328 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1331 if (ir
->type
->base_type
== GLSL_TYPE_BOOL
)
1332 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1337 case ir_unop_interpolate_at_centroid
:
1338 case ir_binop_interpolate_at_offset
:
1339 case ir_binop_interpolate_at_sample
: {
1340 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1341 ir_swizzle
*swizzle
= NULL
;
1343 /* the api does not allow a swizzle here, but the varying packing code
1344 * may have pushed one into here.
1346 swizzle
= ir
->operands
[0]->as_swizzle();
1348 deref
= swizzle
->val
->as_dereference();
1352 deref
->accept(this);
1354 nir_intrinsic_op op
;
1355 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1356 switch (ir
->operation
) {
1357 case ir_unop_interpolate_at_centroid
:
1358 op
= nir_intrinsic_interp_var_at_centroid
;
1360 case ir_binop_interpolate_at_offset
:
1361 op
= nir_intrinsic_interp_var_at_offset
;
1363 case ir_binop_interpolate_at_sample
:
1364 op
= nir_intrinsic_interp_var_at_sample
;
1367 unreachable("Invalid interpolation intrinsic");
1370 /* This case can happen if the vertex shader does not write the
1371 * given varying. In this case, the linker will lower it to a
1372 * global variable. Since interpolating a variable makes no
1373 * sense, we'll just turn it into a load which will probably
1374 * eventually end up as an SSA definition.
1376 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1377 op
= nir_intrinsic_load_var
;
1380 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1381 intrin
->num_components
= deref
->type
->vector_elements
;
1382 intrin
->variables
[0] = this->deref_head
;
1383 ralloc_steal(intrin
, intrin
->variables
[0]);
1385 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1386 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1387 intrin
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1389 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1390 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1393 unsigned swiz
[4] = {
1394 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1397 result
= nir_swizzle(&b
, result
, swiz
,
1398 swizzle
->type
->vector_elements
, false);
1408 nir_ssa_def
*srcs
[4];
1409 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1410 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1412 glsl_base_type types
[4];
1413 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1415 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1417 types
[i
] = GLSL_TYPE_FLOAT
;
1419 glsl_base_type out_type
;
1421 out_type
= ir
->type
->base_type
;
1423 out_type
= GLSL_TYPE_FLOAT
;
1425 switch (ir
->operation
) {
1426 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1427 case ir_unop_logic_not
:
1428 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1431 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1432 : nir_ineg(&b
, srcs
[0]);
1435 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1436 : nir_iabs(&b
, srcs
[0]);
1438 case ir_unop_saturate
:
1439 assert(type_is_float(types
[0]));
1440 result
= nir_fsat(&b
, srcs
[0]);
1443 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1444 : nir_isign(&b
, srcs
[0]);
1446 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1447 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1448 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1449 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1450 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1451 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1452 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1454 result
= supports_ints
? nir_i2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1457 result
= supports_ints
? nir_u2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1460 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1462 case ir_unop_f2i
: result
= nir_f2i(&b
, srcs
[0]); break;
1463 case ir_unop_f2u
: result
= nir_f2u(&b
, srcs
[0]); break;
1464 case ir_unop_f2b
: result
= nir_f2b(&b
, srcs
[0]); break;
1465 case ir_unop_i2b
: result
= nir_i2b(&b
, srcs
[0]); break;
1466 case ir_unop_b2i
: result
= nir_b2i(&b
, srcs
[0]); break;
1467 case ir_unop_d2f
: result
= nir_d2f(&b
, srcs
[0]); break;
1468 case ir_unop_f2d
: result
= nir_f2d(&b
, srcs
[0]); break;
1469 case ir_unop_d2i
: result
= nir_d2i(&b
, srcs
[0]); break;
1470 case ir_unop_d2u
: result
= nir_d2u(&b
, srcs
[0]); break;
1471 case ir_unop_d2b
: result
= nir_d2b(&b
, srcs
[0]); break;
1473 assert(supports_ints
);
1474 result
= nir_i2d(&b
, srcs
[0]);
1477 assert(supports_ints
);
1478 result
= nir_u2d(&b
, srcs
[0]);
1482 case ir_unop_bitcast_i2f
:
1483 case ir_unop_bitcast_f2i
:
1484 case ir_unop_bitcast_u2f
:
1485 case ir_unop_bitcast_f2u
:
1486 case ir_unop_subroutine_to_int
:
1488 result
= nir_imov(&b
, srcs
[0]);
1490 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1491 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1492 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1493 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1494 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1495 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1496 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1497 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1498 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1499 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1500 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1501 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1502 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1503 case ir_unop_pack_snorm_2x16
:
1504 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1506 case ir_unop_pack_snorm_4x8
:
1507 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1509 case ir_unop_pack_unorm_2x16
:
1510 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1512 case ir_unop_pack_unorm_4x8
:
1513 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1515 case ir_unop_pack_half_2x16
:
1516 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1518 case ir_unop_unpack_snorm_2x16
:
1519 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1521 case ir_unop_unpack_snorm_4x8
:
1522 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1524 case ir_unop_unpack_unorm_2x16
:
1525 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1527 case ir_unop_unpack_unorm_4x8
:
1528 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1530 case ir_unop_unpack_half_2x16
:
1531 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1533 case ir_unop_pack_double_2x32
:
1534 result
= nir_pack_double_2x32(&b
, srcs
[0]);
1536 case ir_unop_unpack_double_2x32
:
1537 result
= nir_unpack_double_2x32(&b
, srcs
[0]);
1539 case ir_unop_bitfield_reverse
:
1540 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1542 case ir_unop_bit_count
:
1543 result
= nir_bit_count(&b
, srcs
[0]);
1545 case ir_unop_find_msb
:
1547 case GLSL_TYPE_UINT
:
1548 result
= nir_ufind_msb(&b
, srcs
[0]);
1551 result
= nir_ifind_msb(&b
, srcs
[0]);
1554 unreachable("Invalid type for findMSB()");
1557 case ir_unop_find_lsb
:
1558 result
= nir_find_lsb(&b
, srcs
[0]);
1562 switch (ir
->type
->vector_elements
) {
1564 switch (ir
->operands
[0]->type
->vector_elements
) {
1565 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1566 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1567 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1568 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1569 default: unreachable("not reached");
1573 switch (ir
->operands
[0]->type
->vector_elements
) {
1574 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1575 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1576 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1577 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1578 default: unreachable("not reached");
1582 switch (ir
->operands
[0]->type
->vector_elements
) {
1583 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1584 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1585 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1586 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1587 default: unreachable("not reached");
1591 switch (ir
->operands
[0]->type
->vector_elements
) {
1592 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1593 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1594 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1595 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1596 default: unreachable("not reached");
1600 unreachable("not reached");
1603 case ir_unop_get_buffer_size
: {
1604 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1606 nir_intrinsic_get_buffer_size
);
1607 load
->num_components
= ir
->type
->vector_elements
;
1608 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1609 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1610 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1615 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1616 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1619 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1620 : nir_isub(&b
, srcs
[0], srcs
[1]);
1623 result
= type_is_float(out_type
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1624 : nir_imul(&b
, srcs
[0], srcs
[1]);
1627 if (type_is_float(out_type
))
1628 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1629 else if (out_type
== GLSL_TYPE_INT
)
1630 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1632 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1635 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1636 : nir_umod(&b
, srcs
[0], srcs
[1]);
1639 if (type_is_float(out_type
))
1640 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1641 else if (out_type
== GLSL_TYPE_INT
)
1642 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1644 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1647 if (type_is_float(out_type
))
1648 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1649 else if (out_type
== GLSL_TYPE_INT
)
1650 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1652 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1654 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1655 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1656 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1657 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1658 case ir_binop_logic_and
:
1659 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1660 : nir_fand(&b
, srcs
[0], srcs
[1]);
1662 case ir_binop_logic_or
:
1663 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1664 : nir_for(&b
, srcs
[0], srcs
[1]);
1666 case ir_binop_logic_xor
:
1667 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1668 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1670 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1671 case ir_binop_rshift
:
1672 result
= (out_type
== GLSL_TYPE_INT
) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1673 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1675 case ir_binop_imul_high
:
1676 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1677 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1679 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1680 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1682 if (supports_ints
) {
1683 if (type_is_float(types
[0]))
1684 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1685 else if (types
[0] == GLSL_TYPE_INT
)
1686 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1688 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1690 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1693 case ir_binop_greater
:
1694 if (supports_ints
) {
1695 if (type_is_float(types
[0]))
1696 result
= nir_flt(&b
, srcs
[1], srcs
[0]);
1697 else if (types
[0] == GLSL_TYPE_INT
)
1698 result
= nir_ilt(&b
, srcs
[1], srcs
[0]);
1700 result
= nir_ult(&b
, srcs
[1], srcs
[0]);
1702 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1705 case ir_binop_lequal
:
1706 if (supports_ints
) {
1707 if (type_is_float(types
[0]))
1708 result
= nir_fge(&b
, srcs
[1], srcs
[0]);
1709 else if (types
[0] == GLSL_TYPE_INT
)
1710 result
= nir_ige(&b
, srcs
[1], srcs
[0]);
1712 result
= nir_uge(&b
, srcs
[1], srcs
[0]);
1714 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1717 case ir_binop_gequal
:
1718 if (supports_ints
) {
1719 if (type_is_float(types
[0]))
1720 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1721 else if (types
[0] == GLSL_TYPE_INT
)
1722 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1724 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1726 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1729 case ir_binop_equal
:
1730 if (supports_ints
) {
1731 if (type_is_float(types
[0]))
1732 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1734 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1736 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1739 case ir_binop_nequal
:
1740 if (supports_ints
) {
1741 if (type_is_float(types
[0]))
1742 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1744 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1746 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1749 case ir_binop_all_equal
:
1750 if (supports_ints
) {
1751 if (type_is_float(types
[0])) {
1752 switch (ir
->operands
[0]->type
->vector_elements
) {
1753 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1754 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1755 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1756 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1758 unreachable("not reached");
1761 switch (ir
->operands
[0]->type
->vector_elements
) {
1762 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1763 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1764 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1765 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1767 unreachable("not reached");
1771 switch (ir
->operands
[0]->type
->vector_elements
) {
1772 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1773 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1774 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1775 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1777 unreachable("not reached");
1781 case ir_binop_any_nequal
:
1782 if (supports_ints
) {
1783 if (type_is_float(types
[0])) {
1784 switch (ir
->operands
[0]->type
->vector_elements
) {
1785 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1786 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1787 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1788 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1790 unreachable("not reached");
1793 switch (ir
->operands
[0]->type
->vector_elements
) {
1794 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1795 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1796 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1797 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1799 unreachable("not reached");
1803 switch (ir
->operands
[0]->type
->vector_elements
) {
1804 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1805 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1806 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1807 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1809 unreachable("not reached");
1814 switch (ir
->operands
[0]->type
->vector_elements
) {
1815 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1816 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1817 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1819 unreachable("not reached");
1823 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1825 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1828 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1832 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1834 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1836 case ir_triop_bitfield_extract
:
1837 result
= (out_type
== GLSL_TYPE_INT
) ?
1838 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1839 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1841 case ir_quadop_bitfield_insert
:
1842 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1844 case ir_quadop_vector
:
1845 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1849 unreachable("not reached");
1854 nir_visitor::visit(ir_swizzle
*ir
)
1856 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1857 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1858 ir
->type
->vector_elements
, !supports_ints
);
1862 nir_visitor::visit(ir_texture
*ir
)
1869 num_srcs
= 1; /* coordinate */
1874 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1875 num_srcs
= 2; /* coordinate, bias/lod */
1879 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1885 if (ir
->lod_info
.lod
!= NULL
)
1886 num_srcs
= 2; /* coordinate, lod */
1888 num_srcs
= 1; /* coordinate */
1892 op
= nir_texop_txf_ms
;
1893 num_srcs
= 2; /* coordinate, sample_index */
1898 if (ir
->lod_info
.lod
!= NULL
)
1899 num_srcs
= 1; /* lod */
1906 num_srcs
= 1; /* coordinate */
1911 num_srcs
= 1; /* coordinate */
1914 case ir_query_levels
:
1915 op
= nir_texop_query_levels
;
1919 case ir_texture_samples
:
1920 op
= nir_texop_texture_samples
;
1924 case ir_samples_identical
:
1925 op
= nir_texop_samples_identical
;
1926 num_srcs
= 1; /* coordinate */
1930 unreachable("not reached");
1933 if (ir
->projector
!= NULL
)
1935 if (ir
->shadow_comparator
!= NULL
)
1937 if (ir
->offset
!= NULL
)
1940 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
1943 instr
->sampler_dim
=
1944 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
1945 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
1946 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
1947 if (instr
->is_shadow
)
1948 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
1949 switch (ir
->type
->base_type
) {
1950 case GLSL_TYPE_FLOAT
:
1951 instr
->dest_type
= nir_type_float
;
1954 instr
->dest_type
= nir_type_int
;
1956 case GLSL_TYPE_BOOL
:
1957 case GLSL_TYPE_UINT
:
1958 instr
->dest_type
= nir_type_uint
;
1961 unreachable("not reached");
1964 instr
->texture
= evaluate_deref(&instr
->instr
, ir
->sampler
);
1966 unsigned src_number
= 0;
1968 if (ir
->coordinate
!= NULL
) {
1969 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
1970 instr
->src
[src_number
].src
=
1971 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
1972 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
1976 if (ir
->projector
!= NULL
) {
1977 instr
->src
[src_number
].src
=
1978 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
1979 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
1983 if (ir
->shadow_comparator
!= NULL
) {
1984 instr
->src
[src_number
].src
=
1985 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparator
));
1986 instr
->src
[src_number
].src_type
= nir_tex_src_comparator
;
1990 if (ir
->offset
!= NULL
) {
1991 /* we don't support multiple offsets yet */
1992 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
1994 instr
->src
[src_number
].src
=
1995 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
1996 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2002 instr
->src
[src_number
].src
=
2003 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
2004 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2011 if (ir
->lod_info
.lod
!= NULL
) {
2012 instr
->src
[src_number
].src
=
2013 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
2014 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2020 instr
->src
[src_number
].src
=
2021 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
2022 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2024 instr
->src
[src_number
].src
=
2025 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
2026 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2031 instr
->src
[src_number
].src
=
2032 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
2033 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2038 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2045 assert(src_number
== num_srcs
);
2047 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2048 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2052 nir_visitor::visit(ir_constant
*ir
)
2055 * We don't know if this variable is an array or struct that gets
2056 * dereferenced, so do the safe thing an make it a variable with a
2057 * constant initializer and return a dereference.
2061 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2062 var
->data
.read_only
= true;
2063 var
->constant_initializer
= constant_copy(ir
, var
);
2065 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2066 this->deref_tail
= &this->deref_head
->deref
;
2070 nir_visitor::visit(ir_dereference_variable
*ir
)
2072 struct hash_entry
*entry
=
2073 _mesa_hash_table_search(this->var_table
, ir
->var
);
2075 nir_variable
*var
= (nir_variable
*) entry
->data
;
2077 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2078 this->deref_head
= deref
;
2079 this->deref_tail
= &deref
->deref
;
2083 nir_visitor::visit(ir_dereference_record
*ir
)
2085 ir
->record
->accept(this);
2087 int field_index
= this->deref_tail
->type
->field_index(ir
->field
);
2088 assert(field_index
>= 0);
2090 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2091 deref
->deref
.type
= ir
->type
;
2092 this->deref_tail
->child
= &deref
->deref
;
2093 this->deref_tail
= &deref
->deref
;
2097 nir_visitor::visit(ir_dereference_array
*ir
)
2099 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2100 deref
->deref
.type
= ir
->type
;
2102 ir_constant
*const_index
= ir
->array_index
->as_constant();
2103 if (const_index
!= NULL
) {
2104 deref
->deref_array_type
= nir_deref_array_type_direct
;
2105 deref
->base_offset
= const_index
->value
.u
[0];
2107 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2109 nir_src_for_ssa(evaluate_rvalue(ir
->array_index
));
2112 ir
->array
->accept(this);
2114 this->deref_tail
->child
= &deref
->deref
;
2115 ralloc_steal(this->deref_tail
, deref
);
2116 this->deref_tail
= &deref
->deref
;
2120 nir_visitor::visit(ir_barrier
*)
2122 nir_intrinsic_instr
*instr
=
2123 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2124 nir_builder_instr_insert(&b
, &instr
->instr
);