2 * Copyright © 2014 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 * Connor Abbott (cwabbott0@gmail.com)
28 #include "glsl_to_nir.h"
29 #include "ir_visitor.h"
30 #include "ir_hierarchical_visitor.h"
32 #include "compiler/nir/nir_control_flow.h"
33 #include "compiler/nir/nir_builder.h"
34 #include "main/imports.h"
37 * pass to lower GLSL IR to NIR
39 * This will lower variable dereferences to loads/stores of corresponding
40 * variables in NIR - the variables will be converted to registers in a later
46 class nir_visitor
: public ir_visitor
49 nir_visitor(nir_shader
*shader
);
52 virtual void visit(ir_variable
*);
53 virtual void visit(ir_function
*);
54 virtual void visit(ir_function_signature
*);
55 virtual void visit(ir_loop
*);
56 virtual void visit(ir_if
*);
57 virtual void visit(ir_discard
*);
58 virtual void visit(ir_loop_jump
*);
59 virtual void visit(ir_return
*);
60 virtual void visit(ir_call
*);
61 virtual void visit(ir_assignment
*);
62 virtual void visit(ir_emit_vertex
*);
63 virtual void visit(ir_end_primitive
*);
64 virtual void visit(ir_expression
*);
65 virtual void visit(ir_swizzle
*);
66 virtual void visit(ir_texture
*);
67 virtual void visit(ir_constant
*);
68 virtual void visit(ir_dereference_variable
*);
69 virtual void visit(ir_dereference_record
*);
70 virtual void visit(ir_dereference_array
*);
71 virtual void visit(ir_barrier
*);
73 void create_function(ir_function_signature
*ir
);
76 void add_instr(nir_instr
*instr
, unsigned num_components
, unsigned bit_size
);
77 nir_ssa_def
*evaluate_rvalue(ir_rvalue
*ir
);
79 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
**srcs
);
80 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
);
81 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
83 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
84 nir_ssa_def
*src2
, nir_ssa_def
*src3
);
89 nir_function_impl
*impl
;
91 nir_ssa_def
*result
; /* result of the expression tree last visited */
93 nir_deref_var
*evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
);
95 /* the head of the dereference chain we're creating */
96 nir_deref_var
*deref_head
;
97 /* the tail of the dereference chain we're creating */
98 nir_deref
*deref_tail
;
100 nir_variable
*var
; /* variable created by ir_variable visitor */
102 /* whether the IR we're operating on is per-function or global */
105 /* map of ir_variable -> nir_variable */
106 struct hash_table
*var_table
;
108 /* map of ir_function_signature -> nir_function_overload */
109 struct hash_table
*overload_table
;
113 * This visitor runs before the main visitor, calling create_function() for
114 * each function so that the main visitor can resolve forward references in
118 class nir_function_visitor
: public ir_hierarchical_visitor
121 nir_function_visitor(nir_visitor
*v
) : visitor(v
)
124 virtual ir_visitor_status
visit_enter(ir_function
*);
127 nir_visitor
*visitor
;
130 } /* end of anonymous namespace */
133 nir_remap_attributes(nir_shader
*shader
,
134 const nir_shader_compiler_options
*options
)
136 if (options
->vs_inputs_dual_locations
) {
137 nir_foreach_variable(var
, &shader
->inputs
) {
138 var
->data
.location
+=
139 _mesa_bitcount_64(shader
->info
.vs
.double_inputs
&
140 BITFIELD64_MASK(var
->data
.location
));
144 /* Once the remap is done, reset double_inputs_read, so later it will have
145 * which location/slots are doubles */
146 shader
->info
.vs
.double_inputs
= 0;
150 glsl_to_nir(const struct gl_shader_program
*shader_prog
,
151 gl_shader_stage stage
,
152 const nir_shader_compiler_options
*options
)
154 struct gl_linked_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
156 nir_shader
*shader
= nir_shader_create(NULL
, stage
, options
,
159 nir_visitor
v1(shader
);
160 nir_function_visitor
v2(&v1
);
162 visit_exec_list(sh
->ir
, &v1
);
164 nir_lower_constant_initializers(shader
, (nir_variable_mode
)~0);
166 /* Remap the locations to slots so those requiring two slots will occupy
167 * two locations. For instance, if we have in the IR code a dvec3 attr0 in
168 * location 0 and vec4 attr1 in location 1, in NIR attr0 will use
169 * locations/slots 0 and 1, and attr1 will use location/slot 2 */
170 if (shader
->info
.stage
== MESA_SHADER_VERTEX
)
171 nir_remap_attributes(shader
, options
);
173 shader
->info
.name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
174 if (shader_prog
->Label
)
175 shader
->info
.label
= ralloc_strdup(shader
, shader_prog
->Label
);
177 /* Check for transform feedback varyings specified via the API */
178 shader
->info
.has_transform_feedback_varyings
=
179 shader_prog
->TransformFeedback
.NumVarying
> 0;
181 /* Check for transform feedback varyings specified in the Shader */
182 if (shader_prog
->last_vert_prog
)
183 shader
->info
.has_transform_feedback_varyings
|=
184 shader_prog
->last_vert_prog
->sh
.LinkedTransformFeedback
->NumVarying
> 0;
189 nir_visitor::nir_visitor(nir_shader
*shader
)
191 this->supports_ints
= shader
->options
->native_integers
;
192 this->shader
= shader
;
193 this->is_global
= true;
194 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
195 _mesa_key_pointer_equal
);
196 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
197 _mesa_key_pointer_equal
);
201 this->deref_head
= NULL
;
202 this->deref_tail
= NULL
;
203 memset(&this->b
, 0, sizeof(this->b
));
206 nir_visitor::~nir_visitor()
208 _mesa_hash_table_destroy(this->var_table
, NULL
);
209 _mesa_hash_table_destroy(this->overload_table
, NULL
);
213 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
216 ralloc_steal(mem_ctx
, this->deref_head
);
217 return this->deref_head
;
220 static nir_constant
*
221 constant_copy(ir_constant
*ir
, void *mem_ctx
)
226 nir_constant
*ret
= rzalloc(mem_ctx
, nir_constant
);
228 const unsigned rows
= ir
->type
->vector_elements
;
229 const unsigned cols
= ir
->type
->matrix_columns
;
232 ret
->num_elements
= 0;
233 switch (ir
->type
->base_type
) {
235 /* Only float base types can be matrices. */
238 for (unsigned r
= 0; r
< rows
; r
++)
239 ret
->values
[0].u32
[r
] = ir
->value
.u
[r
];
244 /* Only float base types can be matrices. */
247 for (unsigned r
= 0; r
< rows
; r
++)
248 ret
->values
[0].i32
[r
] = ir
->value
.i
[r
];
252 case GLSL_TYPE_FLOAT
:
253 for (unsigned c
= 0; c
< cols
; c
++) {
254 for (unsigned r
= 0; r
< rows
; r
++)
255 ret
->values
[c
].f32
[r
] = ir
->value
.f
[c
* rows
+ r
];
259 case GLSL_TYPE_DOUBLE
:
260 for (unsigned c
= 0; c
< cols
; c
++) {
261 for (unsigned r
= 0; r
< rows
; r
++)
262 ret
->values
[c
].f64
[r
] = ir
->value
.d
[c
* rows
+ r
];
266 case GLSL_TYPE_UINT64
:
267 /* Only float base types can be matrices. */
270 for (unsigned r
= 0; r
< rows
; r
++)
271 ret
->values
[0].u64
[r
] = ir
->value
.u64
[r
];
274 case GLSL_TYPE_INT64
:
275 /* Only float base types can be matrices. */
278 for (unsigned r
= 0; r
< rows
; r
++)
279 ret
->values
[0].i64
[r
] = ir
->value
.i64
[r
];
283 /* Only float base types can be matrices. */
286 for (unsigned r
= 0; r
< rows
; r
++)
287 ret
->values
[0].u32
[r
] = ir
->value
.b
[r
] ? NIR_TRUE
: NIR_FALSE
;
291 case GLSL_TYPE_STRUCT
:
292 case GLSL_TYPE_ARRAY
:
293 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
295 ret
->num_elements
= ir
->type
->length
;
297 for (i
= 0; i
< ir
->type
->length
; i
++)
298 ret
->elements
[i
] = constant_copy(ir
->const_elements
[i
], mem_ctx
);
302 unreachable("not reached");
309 nir_visitor::visit(ir_variable
*ir
)
311 /* TODO: In future we should switch to using the NIR lowering pass but for
312 * now just ignore these variables as GLSL IR should have lowered them.
313 * Anything remaining are just dead vars that weren't cleaned up.
315 if (ir
->data
.mode
== ir_var_shader_shared
)
318 nir_variable
*var
= rzalloc(shader
, nir_variable
);
319 var
->type
= ir
->type
;
320 var
->name
= ralloc_strdup(var
, ir
->name
);
322 var
->data
.always_active_io
= ir
->data
.always_active_io
;
323 var
->data
.read_only
= ir
->data
.read_only
;
324 var
->data
.centroid
= ir
->data
.centroid
;
325 var
->data
.sample
= ir
->data
.sample
;
326 var
->data
.patch
= ir
->data
.patch
;
327 var
->data
.invariant
= ir
->data
.invariant
;
328 var
->data
.location
= ir
->data
.location
;
329 var
->data
.stream
= ir
->data
.stream
;
330 var
->data
.compact
= false;
332 switch(ir
->data
.mode
) {
334 case ir_var_temporary
:
336 var
->data
.mode
= nir_var_global
;
338 var
->data
.mode
= nir_var_local
;
341 case ir_var_function_in
:
342 case ir_var_function_out
:
343 case ir_var_function_inout
:
344 case ir_var_const_in
:
345 var
->data
.mode
= nir_var_local
;
348 case ir_var_shader_in
:
349 if (shader
->info
.stage
== MESA_SHADER_FRAGMENT
&&
350 ir
->data
.location
== VARYING_SLOT_FACE
) {
351 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
352 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
353 var
->data
.mode
= nir_var_system_value
;
354 } else if (shader
->info
.stage
== MESA_SHADER_GEOMETRY
&&
355 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
356 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
357 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
358 var
->data
.mode
= nir_var_system_value
;
360 var
->data
.mode
= nir_var_shader_in
;
362 if (shader
->info
.stage
== MESA_SHADER_TESS_EVAL
&&
363 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
364 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
365 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
369 /* Mark all the locations that require two slots */
370 if (shader
->info
.stage
== MESA_SHADER_VERTEX
&&
371 glsl_type_is_dual_slot(glsl_without_array(var
->type
))) {
372 for (uint i
= 0; i
< glsl_count_attribute_slots(var
->type
, true); i
++) {
373 uint64_t bitfield
= BITFIELD64_BIT(var
->data
.location
+ i
);
374 shader
->info
.vs
.double_inputs
|= bitfield
;
379 case ir_var_shader_out
:
380 var
->data
.mode
= nir_var_shader_out
;
381 if (shader
->info
.stage
== MESA_SHADER_TESS_CTRL
&&
382 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
383 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
384 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
389 var
->data
.mode
= nir_var_uniform
;
392 case ir_var_shader_storage
:
393 var
->data
.mode
= nir_var_shader_storage
;
396 case ir_var_system_value
:
397 var
->data
.mode
= nir_var_system_value
;
401 unreachable("not reached");
404 var
->data
.interpolation
= ir
->data
.interpolation
;
405 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
406 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
407 var
->data
.location_frac
= ir
->data
.location_frac
;
409 if (var
->data
.pixel_center_integer
) {
410 assert(shader
->info
.stage
== MESA_SHADER_FRAGMENT
);
411 shader
->info
.fs
.pixel_center_integer
= true;
414 switch (ir
->data
.depth_layout
) {
415 case ir_depth_layout_none
:
416 var
->data
.depth_layout
= nir_depth_layout_none
;
418 case ir_depth_layout_any
:
419 var
->data
.depth_layout
= nir_depth_layout_any
;
421 case ir_depth_layout_greater
:
422 var
->data
.depth_layout
= nir_depth_layout_greater
;
424 case ir_depth_layout_less
:
425 var
->data
.depth_layout
= nir_depth_layout_less
;
427 case ir_depth_layout_unchanged
:
428 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
431 unreachable("not reached");
434 var
->data
.index
= ir
->data
.index
;
435 var
->data
.descriptor_set
= 0;
436 var
->data
.binding
= ir
->data
.binding
;
437 var
->data
.offset
= ir
->data
.offset
;
438 var
->data
.image
.read_only
= ir
->data
.memory_read_only
;
439 var
->data
.image
.write_only
= ir
->data
.memory_write_only
;
440 var
->data
.image
.coherent
= ir
->data
.memory_coherent
;
441 var
->data
.image
._volatile
= ir
->data
.memory_volatile
;
442 var
->data
.image
.restrict_flag
= ir
->data
.memory_restrict
;
443 var
->data
.image
.format
= ir
->data
.image_format
;
444 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
446 var
->num_state_slots
= ir
->get_num_state_slots();
447 if (var
->num_state_slots
> 0) {
448 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
449 var
->num_state_slots
);
451 ir_state_slot
*state_slots
= ir
->get_state_slots();
452 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
453 for (unsigned j
= 0; j
< 5; j
++)
454 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
455 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
458 var
->state_slots
= NULL
;
461 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
463 var
->interface_type
= ir
->get_interface_type();
465 if (var
->data
.mode
== nir_var_local
)
466 nir_function_impl_add_variable(impl
, var
);
468 nir_shader_add_variable(shader
, var
);
470 _mesa_hash_table_insert(var_table
, ir
, var
);
475 nir_function_visitor::visit_enter(ir_function
*ir
)
477 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
478 visitor
->create_function(sig
);
480 return visit_continue_with_parent
;
484 nir_visitor::create_function(ir_function_signature
*ir
)
486 if (ir
->is_intrinsic())
489 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
491 assert(ir
->parameters
.is_empty());
492 assert(ir
->return_type
== glsl_type::void_type
);
494 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
498 nir_visitor::visit(ir_function
*ir
)
500 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
505 nir_visitor::visit(ir_function_signature
*ir
)
507 if (ir
->is_intrinsic())
510 struct hash_entry
*entry
=
511 _mesa_hash_table_search(this->overload_table
, ir
);
514 nir_function
*func
= (nir_function
*) entry
->data
;
516 if (ir
->is_defined
) {
517 nir_function_impl
*impl
= nir_function_impl_create(func
);
520 assert(strcmp(func
->name
, "main") == 0);
521 assert(ir
->parameters
.is_empty());
522 assert(func
->return_type
== glsl_type::void_type
);
524 this->is_global
= false;
526 nir_builder_init(&b
, impl
);
527 b
.cursor
= nir_after_cf_list(&impl
->body
);
528 visit_exec_list(&ir
->body
, this);
530 this->is_global
= true;
537 nir_visitor::visit(ir_loop
*ir
)
540 visit_exec_list(&ir
->body_instructions
, this);
541 nir_pop_loop(&b
, NULL
);
545 nir_visitor::visit(ir_if
*ir
)
547 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
548 visit_exec_list(&ir
->then_instructions
, this);
549 nir_push_else(&b
, NULL
);
550 visit_exec_list(&ir
->else_instructions
, this);
551 nir_pop_if(&b
, NULL
);
555 nir_visitor::visit(ir_discard
*ir
)
558 * discards aren't treated as control flow, because before we lower them
559 * they can appear anywhere in the shader and the stuff after them may still
560 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
561 * discards will be immediately followed by a return.
564 nir_intrinsic_instr
*discard
;
566 discard
= nir_intrinsic_instr_create(this->shader
,
567 nir_intrinsic_discard_if
);
569 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
571 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
574 nir_builder_instr_insert(&b
, &discard
->instr
);
578 nir_visitor::visit(ir_emit_vertex
*ir
)
580 nir_intrinsic_instr
*instr
=
581 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
582 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
583 nir_builder_instr_insert(&b
, &instr
->instr
);
587 nir_visitor::visit(ir_end_primitive
*ir
)
589 nir_intrinsic_instr
*instr
=
590 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
591 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
592 nir_builder_instr_insert(&b
, &instr
->instr
);
596 nir_visitor::visit(ir_loop_jump
*ir
)
600 case ir_loop_jump::jump_break
:
601 type
= nir_jump_break
;
603 case ir_loop_jump::jump_continue
:
604 type
= nir_jump_continue
;
607 unreachable("not reached");
610 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
611 nir_builder_instr_insert(&b
, &instr
->instr
);
615 nir_visitor::visit(ir_return
*ir
)
617 if (ir
->value
!= NULL
) {
618 nir_intrinsic_instr
*copy
=
619 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
621 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
622 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
625 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
626 nir_builder_instr_insert(&b
, &instr
->instr
);
630 nir_visitor::visit(ir_call
*ir
)
632 if (ir
->callee
->is_intrinsic()) {
635 switch (ir
->callee
->intrinsic_id
) {
636 case ir_intrinsic_atomic_counter_read
:
637 op
= nir_intrinsic_atomic_counter_read_var
;
639 case ir_intrinsic_atomic_counter_increment
:
640 op
= nir_intrinsic_atomic_counter_inc_var
;
642 case ir_intrinsic_atomic_counter_predecrement
:
643 op
= nir_intrinsic_atomic_counter_dec_var
;
645 case ir_intrinsic_atomic_counter_add
:
646 op
= nir_intrinsic_atomic_counter_add_var
;
648 case ir_intrinsic_atomic_counter_and
:
649 op
= nir_intrinsic_atomic_counter_and_var
;
651 case ir_intrinsic_atomic_counter_or
:
652 op
= nir_intrinsic_atomic_counter_or_var
;
654 case ir_intrinsic_atomic_counter_xor
:
655 op
= nir_intrinsic_atomic_counter_xor_var
;
657 case ir_intrinsic_atomic_counter_min
:
658 op
= nir_intrinsic_atomic_counter_min_var
;
660 case ir_intrinsic_atomic_counter_max
:
661 op
= nir_intrinsic_atomic_counter_max_var
;
663 case ir_intrinsic_atomic_counter_exchange
:
664 op
= nir_intrinsic_atomic_counter_exchange_var
;
666 case ir_intrinsic_atomic_counter_comp_swap
:
667 op
= nir_intrinsic_atomic_counter_comp_swap_var
;
669 case ir_intrinsic_image_load
:
670 op
= nir_intrinsic_image_load
;
672 case ir_intrinsic_image_store
:
673 op
= nir_intrinsic_image_store
;
675 case ir_intrinsic_image_atomic_add
:
676 op
= nir_intrinsic_image_atomic_add
;
678 case ir_intrinsic_image_atomic_min
:
679 op
= nir_intrinsic_image_atomic_min
;
681 case ir_intrinsic_image_atomic_max
:
682 op
= nir_intrinsic_image_atomic_max
;
684 case ir_intrinsic_image_atomic_and
:
685 op
= nir_intrinsic_image_atomic_and
;
687 case ir_intrinsic_image_atomic_or
:
688 op
= nir_intrinsic_image_atomic_or
;
690 case ir_intrinsic_image_atomic_xor
:
691 op
= nir_intrinsic_image_atomic_xor
;
693 case ir_intrinsic_image_atomic_exchange
:
694 op
= nir_intrinsic_image_atomic_exchange
;
696 case ir_intrinsic_image_atomic_comp_swap
:
697 op
= nir_intrinsic_image_atomic_comp_swap
;
699 case ir_intrinsic_memory_barrier
:
700 op
= nir_intrinsic_memory_barrier
;
702 case ir_intrinsic_image_size
:
703 op
= nir_intrinsic_image_size
;
705 case ir_intrinsic_image_samples
:
706 op
= nir_intrinsic_image_samples
;
708 case ir_intrinsic_ssbo_store
:
709 op
= nir_intrinsic_store_ssbo
;
711 case ir_intrinsic_ssbo_load
:
712 op
= nir_intrinsic_load_ssbo
;
714 case ir_intrinsic_ssbo_atomic_add
:
715 op
= nir_intrinsic_ssbo_atomic_add
;
717 case ir_intrinsic_ssbo_atomic_and
:
718 op
= nir_intrinsic_ssbo_atomic_and
;
720 case ir_intrinsic_ssbo_atomic_or
:
721 op
= nir_intrinsic_ssbo_atomic_or
;
723 case ir_intrinsic_ssbo_atomic_xor
:
724 op
= nir_intrinsic_ssbo_atomic_xor
;
726 case ir_intrinsic_ssbo_atomic_min
:
727 assert(ir
->return_deref
);
728 if (ir
->return_deref
->type
== glsl_type::int_type
)
729 op
= nir_intrinsic_ssbo_atomic_imin
;
730 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
731 op
= nir_intrinsic_ssbo_atomic_umin
;
733 unreachable("Invalid type");
735 case ir_intrinsic_ssbo_atomic_max
:
736 assert(ir
->return_deref
);
737 if (ir
->return_deref
->type
== glsl_type::int_type
)
738 op
= nir_intrinsic_ssbo_atomic_imax
;
739 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
740 op
= nir_intrinsic_ssbo_atomic_umax
;
742 unreachable("Invalid type");
744 case ir_intrinsic_ssbo_atomic_exchange
:
745 op
= nir_intrinsic_ssbo_atomic_exchange
;
747 case ir_intrinsic_ssbo_atomic_comp_swap
:
748 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
750 case ir_intrinsic_shader_clock
:
751 op
= nir_intrinsic_shader_clock
;
753 case ir_intrinsic_group_memory_barrier
:
754 op
= nir_intrinsic_group_memory_barrier
;
756 case ir_intrinsic_memory_barrier_atomic_counter
:
757 op
= nir_intrinsic_memory_barrier_atomic_counter
;
759 case ir_intrinsic_memory_barrier_buffer
:
760 op
= nir_intrinsic_memory_barrier_buffer
;
762 case ir_intrinsic_memory_barrier_image
:
763 op
= nir_intrinsic_memory_barrier_image
;
765 case ir_intrinsic_memory_barrier_shared
:
766 op
= nir_intrinsic_memory_barrier_shared
;
768 case ir_intrinsic_shared_load
:
769 op
= nir_intrinsic_load_shared
;
771 case ir_intrinsic_shared_store
:
772 op
= nir_intrinsic_store_shared
;
774 case ir_intrinsic_shared_atomic_add
:
775 op
= nir_intrinsic_shared_atomic_add
;
777 case ir_intrinsic_shared_atomic_and
:
778 op
= nir_intrinsic_shared_atomic_and
;
780 case ir_intrinsic_shared_atomic_or
:
781 op
= nir_intrinsic_shared_atomic_or
;
783 case ir_intrinsic_shared_atomic_xor
:
784 op
= nir_intrinsic_shared_atomic_xor
;
786 case ir_intrinsic_shared_atomic_min
:
787 assert(ir
->return_deref
);
788 if (ir
->return_deref
->type
== glsl_type::int_type
)
789 op
= nir_intrinsic_shared_atomic_imin
;
790 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
791 op
= nir_intrinsic_shared_atomic_umin
;
793 unreachable("Invalid type");
795 case ir_intrinsic_shared_atomic_max
:
796 assert(ir
->return_deref
);
797 if (ir
->return_deref
->type
== glsl_type::int_type
)
798 op
= nir_intrinsic_shared_atomic_imax
;
799 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
800 op
= nir_intrinsic_shared_atomic_umax
;
802 unreachable("Invalid type");
804 case ir_intrinsic_shared_atomic_exchange
:
805 op
= nir_intrinsic_shared_atomic_exchange
;
807 case ir_intrinsic_shared_atomic_comp_swap
:
808 op
= nir_intrinsic_shared_atomic_comp_swap
;
810 case ir_intrinsic_vote_any
:
811 op
= nir_intrinsic_vote_any
;
813 case ir_intrinsic_vote_all
:
814 op
= nir_intrinsic_vote_all
;
816 case ir_intrinsic_vote_eq
:
817 op
= nir_intrinsic_vote_ieq
;
819 case ir_intrinsic_ballot
:
820 op
= nir_intrinsic_ballot
;
822 case ir_intrinsic_read_invocation
:
823 op
= nir_intrinsic_read_invocation
;
825 case ir_intrinsic_read_first_invocation
:
826 op
= nir_intrinsic_read_first_invocation
;
829 unreachable("not reached");
832 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
833 nir_dest
*dest
= &instr
->dest
;
836 case nir_intrinsic_atomic_counter_read_var
:
837 case nir_intrinsic_atomic_counter_inc_var
:
838 case nir_intrinsic_atomic_counter_dec_var
:
839 case nir_intrinsic_atomic_counter_add_var
:
840 case nir_intrinsic_atomic_counter_min_var
:
841 case nir_intrinsic_atomic_counter_max_var
:
842 case nir_intrinsic_atomic_counter_and_var
:
843 case nir_intrinsic_atomic_counter_or_var
:
844 case nir_intrinsic_atomic_counter_xor_var
:
845 case nir_intrinsic_atomic_counter_exchange_var
:
846 case nir_intrinsic_atomic_counter_comp_swap_var
: {
847 /* Set the counter variable dereference. */
848 exec_node
*param
= ir
->actual_parameters
.get_head();
849 ir_dereference
*counter
= (ir_dereference
*)param
;
851 instr
->variables
[0] = evaluate_deref(&instr
->instr
, counter
);
852 param
= param
->get_next();
854 /* Set the intrinsic destination. */
855 if (ir
->return_deref
) {
856 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
859 /* Set the intrinsic parameters. */
860 if (!param
->is_tail_sentinel()) {
862 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
863 param
= param
->get_next();
866 if (!param
->is_tail_sentinel()) {
868 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
869 param
= param
->get_next();
872 nir_builder_instr_insert(&b
, &instr
->instr
);
875 case nir_intrinsic_image_load
:
876 case nir_intrinsic_image_store
:
877 case nir_intrinsic_image_atomic_add
:
878 case nir_intrinsic_image_atomic_min
:
879 case nir_intrinsic_image_atomic_max
:
880 case nir_intrinsic_image_atomic_and
:
881 case nir_intrinsic_image_atomic_or
:
882 case nir_intrinsic_image_atomic_xor
:
883 case nir_intrinsic_image_atomic_exchange
:
884 case nir_intrinsic_image_atomic_comp_swap
:
885 case nir_intrinsic_image_samples
:
886 case nir_intrinsic_image_size
: {
887 nir_ssa_undef_instr
*instr_undef
=
888 nir_ssa_undef_instr_create(shader
, 1, 32);
889 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
891 /* Set the image variable dereference. */
892 exec_node
*param
= ir
->actual_parameters
.get_head();
893 ir_dereference
*image
= (ir_dereference
*)param
;
894 const glsl_type
*type
=
895 image
->variable_referenced()->type
->without_array();
897 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
898 param
= param
->get_next();
900 /* Set the intrinsic destination. */
901 if (ir
->return_deref
) {
902 unsigned num_components
= ir
->return_deref
->type
->vector_elements
;
903 if (instr
->intrinsic
== nir_intrinsic_image_size
)
904 instr
->num_components
= num_components
;
905 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
906 num_components
, 32, NULL
);
909 if (op
== nir_intrinsic_image_size
||
910 op
== nir_intrinsic_image_samples
) {
911 nir_builder_instr_insert(&b
, &instr
->instr
);
915 /* Set the address argument, extending the coordinate vector to four
918 nir_ssa_def
*src_addr
=
919 evaluate_rvalue((ir_dereference
*)param
);
920 nir_ssa_def
*srcs
[4];
922 for (int i
= 0; i
< 4; i
++) {
923 if (i
< type
->coordinate_components())
924 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
926 srcs
[i
] = &instr_undef
->def
;
929 instr
->src
[0] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
930 param
= param
->get_next();
932 /* Set the sample argument, which is undefined for single-sample
935 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
937 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
938 param
= param
->get_next();
940 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
943 /* Set the intrinsic parameters. */
944 if (!param
->is_tail_sentinel()) {
946 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
947 param
= param
->get_next();
950 if (!param
->is_tail_sentinel()) {
952 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
953 param
= param
->get_next();
955 nir_builder_instr_insert(&b
, &instr
->instr
);
958 case nir_intrinsic_memory_barrier
:
959 case nir_intrinsic_group_memory_barrier
:
960 case nir_intrinsic_memory_barrier_atomic_counter
:
961 case nir_intrinsic_memory_barrier_buffer
:
962 case nir_intrinsic_memory_barrier_image
:
963 case nir_intrinsic_memory_barrier_shared
:
964 nir_builder_instr_insert(&b
, &instr
->instr
);
966 case nir_intrinsic_shader_clock
:
967 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 2, 32, NULL
);
968 instr
->num_components
= 2;
969 nir_builder_instr_insert(&b
, &instr
->instr
);
971 case nir_intrinsic_store_ssbo
: {
972 exec_node
*param
= ir
->actual_parameters
.get_head();
973 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
975 param
= param
->get_next();
976 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
978 param
= param
->get_next();
979 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
981 param
= param
->get_next();
982 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
985 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
986 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
987 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
988 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
989 instr
->num_components
= val
->type
->vector_elements
;
991 nir_builder_instr_insert(&b
, &instr
->instr
);
994 case nir_intrinsic_load_ssbo
: {
995 exec_node
*param
= ir
->actual_parameters
.get_head();
996 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
998 param
= param
->get_next();
999 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1001 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
1002 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1004 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1005 instr
->num_components
= type
->vector_elements
;
1007 /* Setup destination register */
1008 unsigned bit_size
= glsl_get_bit_size(type
);
1009 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1010 type
->vector_elements
, bit_size
, NULL
);
1012 /* Insert the created nir instruction now since in the case of boolean
1013 * result we will need to emit another instruction after it
1015 nir_builder_instr_insert(&b
, &instr
->instr
);
1018 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
1019 * consider a true boolean to be ~0. Fix this up with a != 0
1022 if (type
->is_boolean()) {
1023 nir_alu_instr
*load_ssbo_compare
=
1024 nir_alu_instr_create(shader
, nir_op_ine
);
1025 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
1026 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
1027 load_ssbo_compare
->src
[1].src
=
1028 nir_src_for_ssa(nir_imm_int(&b
, 0));
1029 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
1030 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
1031 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
1032 &load_ssbo_compare
->dest
.dest
,
1033 type
->vector_elements
, bit_size
, NULL
);
1034 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
1035 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
1036 dest
= &load_ssbo_compare
->dest
.dest
;
1040 case nir_intrinsic_ssbo_atomic_add
:
1041 case nir_intrinsic_ssbo_atomic_imin
:
1042 case nir_intrinsic_ssbo_atomic_umin
:
1043 case nir_intrinsic_ssbo_atomic_imax
:
1044 case nir_intrinsic_ssbo_atomic_umax
:
1045 case nir_intrinsic_ssbo_atomic_and
:
1046 case nir_intrinsic_ssbo_atomic_or
:
1047 case nir_intrinsic_ssbo_atomic_xor
:
1048 case nir_intrinsic_ssbo_atomic_exchange
:
1049 case nir_intrinsic_ssbo_atomic_comp_swap
: {
1050 int param_count
= ir
->actual_parameters
.length();
1051 assert(param_count
== 3 || param_count
== 4);
1054 exec_node
*param
= ir
->actual_parameters
.get_head();
1055 ir_instruction
*inst
= (ir_instruction
*) param
;
1056 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1059 param
= param
->get_next();
1060 inst
= (ir_instruction
*) param
;
1061 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1063 /* data1 parameter (this is always present) */
1064 param
= param
->get_next();
1065 inst
= (ir_instruction
*) param
;
1066 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1068 /* data2 parameter (only with atomic_comp_swap) */
1069 if (param_count
== 4) {
1070 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
1071 param
= param
->get_next();
1072 inst
= (ir_instruction
*) param
;
1073 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1077 assert(ir
->return_deref
);
1078 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1079 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1080 nir_builder_instr_insert(&b
, &instr
->instr
);
1083 case nir_intrinsic_load_shared
: {
1084 exec_node
*param
= ir
->actual_parameters
.get_head();
1085 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1087 nir_intrinsic_set_base(instr
, 0);
1088 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1090 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1091 instr
->num_components
= type
->vector_elements
;
1093 /* Setup destination register */
1094 unsigned bit_size
= glsl_get_bit_size(type
);
1095 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1096 type
->vector_elements
, bit_size
, NULL
);
1098 nir_builder_instr_insert(&b
, &instr
->instr
);
1101 case nir_intrinsic_store_shared
: {
1102 exec_node
*param
= ir
->actual_parameters
.get_head();
1103 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1105 param
= param
->get_next();
1106 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1108 param
= param
->get_next();
1109 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1112 nir_intrinsic_set_base(instr
, 0);
1113 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1115 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1117 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1118 instr
->num_components
= val
->type
->vector_elements
;
1120 nir_builder_instr_insert(&b
, &instr
->instr
);
1123 case nir_intrinsic_shared_atomic_add
:
1124 case nir_intrinsic_shared_atomic_imin
:
1125 case nir_intrinsic_shared_atomic_umin
:
1126 case nir_intrinsic_shared_atomic_imax
:
1127 case nir_intrinsic_shared_atomic_umax
:
1128 case nir_intrinsic_shared_atomic_and
:
1129 case nir_intrinsic_shared_atomic_or
:
1130 case nir_intrinsic_shared_atomic_xor
:
1131 case nir_intrinsic_shared_atomic_exchange
:
1132 case nir_intrinsic_shared_atomic_comp_swap
: {
1133 int param_count
= ir
->actual_parameters
.length();
1134 assert(param_count
== 2 || param_count
== 3);
1137 exec_node
*param
= ir
->actual_parameters
.get_head();
1138 ir_instruction
*inst
= (ir_instruction
*) param
;
1139 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1141 /* data1 parameter (this is always present) */
1142 param
= param
->get_next();
1143 inst
= (ir_instruction
*) param
;
1144 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1146 /* data2 parameter (only with atomic_comp_swap) */
1147 if (param_count
== 3) {
1148 assert(op
== nir_intrinsic_shared_atomic_comp_swap
);
1149 param
= param
->get_next();
1150 inst
= (ir_instruction
*) param
;
1152 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1156 assert(ir
->return_deref
);
1157 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1158 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1159 ir
->return_deref
->type
->vector_elements
,
1161 nir_builder_instr_insert(&b
, &instr
->instr
);
1164 case nir_intrinsic_vote_any
:
1165 case nir_intrinsic_vote_all
:
1166 case nir_intrinsic_vote_ieq
: {
1167 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
1168 instr
->num_components
= 1;
1170 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1171 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1173 nir_builder_instr_insert(&b
, &instr
->instr
);
1177 case nir_intrinsic_ballot
: {
1178 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1179 ir
->return_deref
->type
->vector_elements
, 64, NULL
);
1180 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1182 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1183 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1185 nir_builder_instr_insert(&b
, &instr
->instr
);
1188 case nir_intrinsic_read_invocation
: {
1189 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1190 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1191 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1193 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1194 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1196 ir_rvalue
*invocation
= (ir_rvalue
*) ir
->actual_parameters
.get_head()->next
;
1197 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(invocation
));
1199 nir_builder_instr_insert(&b
, &instr
->instr
);
1202 case nir_intrinsic_read_first_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 nir_builder_instr_insert(&b
, &instr
->instr
);
1214 unreachable("not reached");
1217 if (ir
->return_deref
) {
1218 nir_intrinsic_instr
*store_instr
=
1219 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
1220 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1221 nir_intrinsic_set_write_mask(store_instr
,
1222 (1 << store_instr
->num_components
) - 1);
1224 store_instr
->variables
[0] =
1225 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
1226 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
1228 nir_builder_instr_insert(&b
, &store_instr
->instr
);
1234 struct hash_entry
*entry
=
1235 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1237 nir_function
*callee
= (nir_function
*) entry
->data
;
1239 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
1242 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
1243 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
1247 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
1248 nir_builder_instr_insert(&b
, &instr
->instr
);
1252 nir_visitor::visit(ir_assignment
*ir
)
1254 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1256 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1257 ir
->lhs
->variable_referenced()->data
.precise
;
1259 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1260 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1261 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1262 nir_intrinsic_instr
*copy
=
1263 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1265 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1266 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1268 if (ir
->condition
) {
1269 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1270 nir_builder_instr_insert(&b
, ©
->instr
);
1271 nir_pop_if(&b
, NULL
);
1273 nir_builder_instr_insert(&b
, ©
->instr
);
1278 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1280 ir
->lhs
->accept(this);
1281 nir_deref_var
*lhs_deref
= this->deref_head
;
1282 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1284 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1285 /* GLSL IR will give us the input to the write-masked assignment in a
1286 * single packed vector. So, for example, if the writemask is xzw, then
1287 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1291 unsigned component
= 0;
1292 for (unsigned i
= 0; i
< 4; i
++) {
1293 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1295 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1298 nir_intrinsic_instr
*store
=
1299 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1300 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1301 nir_intrinsic_set_write_mask(store
, ir
->write_mask
);
1302 store
->variables
[0] = nir_deref_var_clone(lhs_deref
, store
);
1303 store
->src
[0] = nir_src_for_ssa(src
);
1305 if (ir
->condition
) {
1306 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1307 nir_builder_instr_insert(&b
, &store
->instr
);
1308 nir_pop_if(&b
, NULL
);
1310 nir_builder_instr_insert(&b
, &store
->instr
);
1315 * Given an instruction, returns a pointer to its destination or NULL if there
1316 * is no destination.
1318 * Note that this only handles instructions we generate at this level.
1321 get_instr_dest(nir_instr
*instr
)
1323 nir_alu_instr
*alu_instr
;
1324 nir_intrinsic_instr
*intrinsic_instr
;
1325 nir_tex_instr
*tex_instr
;
1327 switch (instr
->type
) {
1328 case nir_instr_type_alu
:
1329 alu_instr
= nir_instr_as_alu(instr
);
1330 return &alu_instr
->dest
.dest
;
1332 case nir_instr_type_intrinsic
:
1333 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1334 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1335 return &intrinsic_instr
->dest
;
1339 case nir_instr_type_tex
:
1340 tex_instr
= nir_instr_as_tex(instr
);
1341 return &tex_instr
->dest
;
1344 unreachable("not reached");
1351 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1354 nir_dest
*dest
= get_instr_dest(instr
);
1357 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1359 nir_builder_instr_insert(&b
, instr
);
1362 assert(dest
->is_ssa
);
1363 this->result
= &dest
->ssa
;
1368 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1371 if (ir
->as_dereference() || ir
->as_constant()) {
1373 * A dereference is being used on the right hand side, which means we
1374 * must emit a variable load.
1377 nir_intrinsic_instr
*load_instr
=
1378 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1379 load_instr
->num_components
= ir
->type
->vector_elements
;
1380 load_instr
->variables
[0] = this->deref_head
;
1381 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1382 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1383 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
, bit_size
);
1386 return this->result
;
1390 type_is_float(glsl_base_type type
)
1392 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
||
1393 type
== GLSL_TYPE_FLOAT16
;
1397 type_is_signed(glsl_base_type type
)
1399 return type
== GLSL_TYPE_INT
|| type
== GLSL_TYPE_INT64
||
1400 type
== GLSL_TYPE_INT16
;
1404 nir_visitor::visit(ir_expression
*ir
)
1406 /* Some special cases */
1407 switch (ir
->operation
) {
1408 case ir_binop_ubo_load
: {
1409 nir_intrinsic_instr
*load
=
1410 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1411 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1412 load
->num_components
= ir
->type
->vector_elements
;
1413 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1414 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1415 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1418 * In UBO's, a true boolean value is any non-zero value, but we consider
1419 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1422 if (ir
->type
->is_boolean())
1423 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1428 case ir_unop_interpolate_at_centroid
:
1429 case ir_binop_interpolate_at_offset
:
1430 case ir_binop_interpolate_at_sample
: {
1431 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1432 ir_swizzle
*swizzle
= NULL
;
1434 /* the api does not allow a swizzle here, but the varying packing code
1435 * may have pushed one into here.
1437 swizzle
= ir
->operands
[0]->as_swizzle();
1439 deref
= swizzle
->val
->as_dereference();
1443 deref
->accept(this);
1445 nir_intrinsic_op op
;
1446 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1447 switch (ir
->operation
) {
1448 case ir_unop_interpolate_at_centroid
:
1449 op
= nir_intrinsic_interp_var_at_centroid
;
1451 case ir_binop_interpolate_at_offset
:
1452 op
= nir_intrinsic_interp_var_at_offset
;
1454 case ir_binop_interpolate_at_sample
:
1455 op
= nir_intrinsic_interp_var_at_sample
;
1458 unreachable("Invalid interpolation intrinsic");
1461 /* This case can happen if the vertex shader does not write the
1462 * given varying. In this case, the linker will lower it to a
1463 * global variable. Since interpolating a variable makes no
1464 * sense, we'll just turn it into a load which will probably
1465 * eventually end up as an SSA definition.
1467 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1468 op
= nir_intrinsic_load_var
;
1471 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1472 intrin
->num_components
= deref
->type
->vector_elements
;
1473 intrin
->variables
[0] = this->deref_head
;
1474 ralloc_steal(intrin
, intrin
->variables
[0]);
1476 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1477 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1478 intrin
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1480 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1481 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1484 unsigned swiz
[4] = {
1485 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1488 result
= nir_swizzle(&b
, result
, swiz
,
1489 swizzle
->type
->vector_elements
, false);
1499 nir_ssa_def
*srcs
[4];
1500 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1501 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1503 glsl_base_type types
[4];
1504 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1506 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1508 types
[i
] = GLSL_TYPE_FLOAT
;
1510 glsl_base_type out_type
;
1512 out_type
= ir
->type
->base_type
;
1514 out_type
= GLSL_TYPE_FLOAT
;
1516 switch (ir
->operation
) {
1517 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1518 case ir_unop_logic_not
:
1519 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1522 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1523 : nir_ineg(&b
, srcs
[0]);
1526 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1527 : nir_iabs(&b
, srcs
[0]);
1529 case ir_unop_saturate
:
1530 assert(type_is_float(types
[0]));
1531 result
= nir_fsat(&b
, srcs
[0]);
1534 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1535 : nir_isign(&b
, srcs
[0]);
1537 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1538 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1539 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1540 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1541 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1542 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1543 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1545 result
= supports_ints
? nir_i2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1548 result
= supports_ints
? nir_u2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1551 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1585 case ir_unop_i642u64
:
1586 case ir_unop_u642i64
: {
1587 nir_alu_type src_type
= nir_get_nir_type_for_glsl_base_type(types
[0]);
1588 nir_alu_type dst_type
= nir_get_nir_type_for_glsl_base_type(out_type
);
1589 result
= nir_build_alu(&b
, nir_type_conversion_op(src_type
, dst_type
,
1590 nir_rounding_mode_undef
),
1591 srcs
[0], NULL
, NULL
, NULL
);
1592 /* b2i and b2f don't have fixed bit-size versions so the builder will
1593 * just assume 32 and we have to fix it up here.
1595 result
->bit_size
= nir_alu_type_get_type_size(dst_type
);
1599 case ir_unop_bitcast_i2f
:
1600 case ir_unop_bitcast_f2i
:
1601 case ir_unop_bitcast_u2f
:
1602 case ir_unop_bitcast_f2u
:
1603 case ir_unop_bitcast_i642d
:
1604 case ir_unop_bitcast_d2i64
:
1605 case ir_unop_bitcast_u642d
:
1606 case ir_unop_bitcast_d2u64
:
1607 case ir_unop_subroutine_to_int
:
1609 result
= nir_imov(&b
, srcs
[0]);
1611 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1612 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1613 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1614 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1615 case ir_unop_frexp_exp
: result
= nir_frexp_exp(&b
, srcs
[0]); break;
1616 case ir_unop_frexp_sig
: result
= nir_frexp_sig(&b
, srcs
[0]); break;
1617 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1618 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1619 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1620 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1621 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1622 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1623 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1624 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1625 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1626 case ir_unop_pack_snorm_2x16
:
1627 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1629 case ir_unop_pack_snorm_4x8
:
1630 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1632 case ir_unop_pack_unorm_2x16
:
1633 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1635 case ir_unop_pack_unorm_4x8
:
1636 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1638 case ir_unop_pack_half_2x16
:
1639 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1641 case ir_unop_unpack_snorm_2x16
:
1642 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1644 case ir_unop_unpack_snorm_4x8
:
1645 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1647 case ir_unop_unpack_unorm_2x16
:
1648 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1650 case ir_unop_unpack_unorm_4x8
:
1651 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1653 case ir_unop_unpack_half_2x16
:
1654 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1656 case ir_unop_pack_sampler_2x32
:
1657 case ir_unop_pack_image_2x32
:
1658 case ir_unop_pack_double_2x32
:
1659 case ir_unop_pack_int_2x32
:
1660 case ir_unop_pack_uint_2x32
:
1661 result
= nir_pack_64_2x32(&b
, srcs
[0]);
1663 case ir_unop_unpack_sampler_2x32
:
1664 case ir_unop_unpack_image_2x32
:
1665 case ir_unop_unpack_double_2x32
:
1666 case ir_unop_unpack_int_2x32
:
1667 case ir_unop_unpack_uint_2x32
:
1668 result
= nir_unpack_64_2x32(&b
, srcs
[0]);
1670 case ir_unop_bitfield_reverse
:
1671 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1673 case ir_unop_bit_count
:
1674 result
= nir_bit_count(&b
, srcs
[0]);
1676 case ir_unop_find_msb
:
1678 case GLSL_TYPE_UINT
:
1679 result
= nir_ufind_msb(&b
, srcs
[0]);
1682 result
= nir_ifind_msb(&b
, srcs
[0]);
1685 unreachable("Invalid type for findMSB()");
1688 case ir_unop_find_lsb
:
1689 result
= nir_find_lsb(&b
, srcs
[0]);
1693 switch (ir
->type
->vector_elements
) {
1695 switch (ir
->operands
[0]->type
->vector_elements
) {
1696 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1697 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1698 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1699 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1700 default: unreachable("not reached");
1704 switch (ir
->operands
[0]->type
->vector_elements
) {
1705 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1706 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1707 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1708 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1709 default: unreachable("not reached");
1713 switch (ir
->operands
[0]->type
->vector_elements
) {
1714 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1715 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1716 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1717 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1718 default: unreachable("not reached");
1722 switch (ir
->operands
[0]->type
->vector_elements
) {
1723 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1724 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1725 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1726 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1727 default: unreachable("not reached");
1731 unreachable("not reached");
1734 case ir_unop_get_buffer_size
: {
1735 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1737 nir_intrinsic_get_buffer_size
);
1738 load
->num_components
= ir
->type
->vector_elements
;
1739 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1740 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1741 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1746 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1747 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1750 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1751 : nir_isub(&b
, srcs
[0], srcs
[1]);
1754 result
= type_is_float(out_type
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1755 : nir_imul(&b
, srcs
[0], srcs
[1]);
1758 if (type_is_float(out_type
))
1759 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1760 else if (type_is_signed(out_type
))
1761 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1763 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1766 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1767 : nir_umod(&b
, srcs
[0], srcs
[1]);
1770 if (type_is_float(out_type
))
1771 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1772 else if (type_is_signed(out_type
))
1773 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1775 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1778 if (type_is_float(out_type
))
1779 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1780 else if (type_is_signed(out_type
))
1781 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1783 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1785 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1786 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1787 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1788 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1789 case ir_binop_logic_and
:
1790 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1791 : nir_fand(&b
, srcs
[0], srcs
[1]);
1793 case ir_binop_logic_or
:
1794 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1795 : nir_for(&b
, srcs
[0], srcs
[1]);
1797 case ir_binop_logic_xor
:
1798 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1799 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1801 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1802 case ir_binop_rshift
:
1803 result
= (type_is_signed(out_type
)) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1804 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1806 case ir_binop_imul_high
:
1807 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1808 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1810 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1811 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1813 if (supports_ints
) {
1814 if (type_is_float(types
[0]))
1815 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1816 else if (type_is_signed(types
[0]))
1817 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1819 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1821 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1824 case ir_binop_gequal
:
1825 if (supports_ints
) {
1826 if (type_is_float(types
[0]))
1827 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1828 else if (type_is_signed(types
[0]))
1829 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1831 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1833 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1836 case ir_binop_equal
:
1837 if (supports_ints
) {
1838 if (type_is_float(types
[0]))
1839 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1841 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1843 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1846 case ir_binop_nequal
:
1847 if (supports_ints
) {
1848 if (type_is_float(types
[0]))
1849 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1851 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1853 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1856 case ir_binop_all_equal
:
1857 if (supports_ints
) {
1858 if (type_is_float(types
[0])) {
1859 switch (ir
->operands
[0]->type
->vector_elements
) {
1860 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1861 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1862 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1863 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1865 unreachable("not reached");
1868 switch (ir
->operands
[0]->type
->vector_elements
) {
1869 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1870 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1871 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1872 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1874 unreachable("not reached");
1878 switch (ir
->operands
[0]->type
->vector_elements
) {
1879 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1880 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1881 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1882 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1884 unreachable("not reached");
1888 case ir_binop_any_nequal
:
1889 if (supports_ints
) {
1890 if (type_is_float(types
[0])) {
1891 switch (ir
->operands
[0]->type
->vector_elements
) {
1892 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1893 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1894 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1895 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1897 unreachable("not reached");
1900 switch (ir
->operands
[0]->type
->vector_elements
) {
1901 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1902 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1903 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1904 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1906 unreachable("not reached");
1910 switch (ir
->operands
[0]->type
->vector_elements
) {
1911 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1912 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1913 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1914 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1916 unreachable("not reached");
1921 switch (ir
->operands
[0]->type
->vector_elements
) {
1922 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1923 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1924 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1926 unreachable("not reached");
1930 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1932 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1935 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1939 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1941 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1943 case ir_triop_bitfield_extract
:
1944 result
= (out_type
== GLSL_TYPE_INT
) ?
1945 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1946 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1948 case ir_quadop_bitfield_insert
:
1949 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1951 case ir_quadop_vector
:
1952 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1956 unreachable("not reached");
1961 nir_visitor::visit(ir_swizzle
*ir
)
1963 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1964 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1965 ir
->type
->vector_elements
, !supports_ints
);
1969 nir_visitor::visit(ir_texture
*ir
)
1976 num_srcs
= 1; /* coordinate */
1981 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1982 num_srcs
= 2; /* coordinate, bias/lod */
1986 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1992 if (ir
->lod_info
.lod
!= NULL
)
1993 num_srcs
= 2; /* coordinate, lod */
1995 num_srcs
= 1; /* coordinate */
1999 op
= nir_texop_txf_ms
;
2000 num_srcs
= 2; /* coordinate, sample_index */
2005 if (ir
->lod_info
.lod
!= NULL
)
2006 num_srcs
= 1; /* lod */
2013 num_srcs
= 1; /* coordinate */
2018 num_srcs
= 1; /* coordinate */
2021 case ir_query_levels
:
2022 op
= nir_texop_query_levels
;
2026 case ir_texture_samples
:
2027 op
= nir_texop_texture_samples
;
2031 case ir_samples_identical
:
2032 op
= nir_texop_samples_identical
;
2033 num_srcs
= 1; /* coordinate */
2037 unreachable("not reached");
2040 if (ir
->projector
!= NULL
)
2042 if (ir
->shadow_comparator
!= NULL
)
2044 if (ir
->offset
!= NULL
)
2047 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
2050 instr
->sampler_dim
=
2051 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
2052 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
2053 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
2054 if (instr
->is_shadow
)
2055 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
2056 switch (ir
->type
->base_type
) {
2057 case GLSL_TYPE_FLOAT
:
2058 instr
->dest_type
= nir_type_float
;
2061 instr
->dest_type
= nir_type_int
;
2063 case GLSL_TYPE_BOOL
:
2064 case GLSL_TYPE_UINT
:
2065 instr
->dest_type
= nir_type_uint
;
2068 unreachable("not reached");
2071 instr
->texture
= evaluate_deref(&instr
->instr
, ir
->sampler
);
2073 unsigned src_number
= 0;
2075 if (ir
->coordinate
!= NULL
) {
2076 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
2077 instr
->src
[src_number
].src
=
2078 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
2079 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2083 if (ir
->projector
!= NULL
) {
2084 instr
->src
[src_number
].src
=
2085 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
2086 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2090 if (ir
->shadow_comparator
!= NULL
) {
2091 instr
->src
[src_number
].src
=
2092 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparator
));
2093 instr
->src
[src_number
].src_type
= nir_tex_src_comparator
;
2097 if (ir
->offset
!= NULL
) {
2098 /* we don't support multiple offsets yet */
2099 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2101 instr
->src
[src_number
].src
=
2102 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
2103 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2109 instr
->src
[src_number
].src
=
2110 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
2111 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2118 if (ir
->lod_info
.lod
!= NULL
) {
2119 instr
->src
[src_number
].src
=
2120 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
2121 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2127 instr
->src
[src_number
].src
=
2128 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
2129 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2131 instr
->src
[src_number
].src
=
2132 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
2133 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2138 instr
->src
[src_number
].src
=
2139 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
2140 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2145 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2152 assert(src_number
== num_srcs
);
2154 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2155 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2159 nir_visitor::visit(ir_constant
*ir
)
2162 * We don't know if this variable is an array or struct that gets
2163 * dereferenced, so do the safe thing an make it a variable with a
2164 * constant initializer and return a dereference.
2168 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2169 var
->data
.read_only
= true;
2170 var
->constant_initializer
= constant_copy(ir
, var
);
2172 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2173 this->deref_tail
= &this->deref_head
->deref
;
2177 nir_visitor::visit(ir_dereference_variable
*ir
)
2179 struct hash_entry
*entry
=
2180 _mesa_hash_table_search(this->var_table
, ir
->var
);
2182 nir_variable
*var
= (nir_variable
*) entry
->data
;
2184 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2185 this->deref_head
= deref
;
2186 this->deref_tail
= &deref
->deref
;
2190 nir_visitor::visit(ir_dereference_record
*ir
)
2192 ir
->record
->accept(this);
2194 int field_index
= ir
->field_idx
;
2195 assert(field_index
>= 0);
2197 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2198 deref
->deref
.type
= ir
->type
;
2199 this->deref_tail
->child
= &deref
->deref
;
2200 this->deref_tail
= &deref
->deref
;
2204 nir_visitor::visit(ir_dereference_array
*ir
)
2206 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2207 deref
->deref
.type
= ir
->type
;
2209 ir_constant
*const_index
= ir
->array_index
->as_constant();
2210 if (const_index
!= NULL
) {
2211 deref
->deref_array_type
= nir_deref_array_type_direct
;
2212 deref
->base_offset
= const_index
->value
.u
[0];
2214 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2216 nir_src_for_ssa(evaluate_rvalue(ir
->array_index
));
2219 ir
->array
->accept(this);
2221 this->deref_tail
->child
= &deref
->deref
;
2222 ralloc_steal(this->deref_tail
, deref
);
2223 this->deref_tail
= &deref
->deref
;
2227 nir_visitor::visit(ir_barrier
*)
2229 nir_intrinsic_instr
*instr
=
2230 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2231 nir_builder_instr_insert(&b
, &instr
->instr
);