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
);
173 /* Check for transform feedback varyings specified via the API */
174 shader
->info
.has_transform_feedback_varyings
=
175 shader_prog
->TransformFeedback
.NumVarying
> 0;
177 /* Check for transform feedback varyings specified in the Shader */
178 if (shader_prog
->last_vert_prog
)
179 shader
->info
.has_transform_feedback_varyings
|=
180 shader_prog
->last_vert_prog
->sh
.LinkedTransformFeedback
->NumVarying
> 0;
185 nir_visitor::nir_visitor(nir_shader
*shader
)
187 this->supports_ints
= shader
->options
->native_integers
;
188 this->shader
= shader
;
189 this->is_global
= true;
190 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
191 _mesa_key_pointer_equal
);
192 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
193 _mesa_key_pointer_equal
);
197 this->deref_head
= NULL
;
198 this->deref_tail
= NULL
;
199 memset(&this->b
, 0, sizeof(this->b
));
202 nir_visitor::~nir_visitor()
204 _mesa_hash_table_destroy(this->var_table
, NULL
);
205 _mesa_hash_table_destroy(this->overload_table
, NULL
);
209 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
212 ralloc_steal(mem_ctx
, this->deref_head
);
213 return this->deref_head
;
216 static nir_constant
*
217 constant_copy(ir_constant
*ir
, void *mem_ctx
)
222 nir_constant
*ret
= ralloc(mem_ctx
, nir_constant
);
224 const unsigned rows
= ir
->type
->vector_elements
;
225 const unsigned cols
= ir
->type
->matrix_columns
;
228 ret
->num_elements
= 0;
229 switch (ir
->type
->base_type
) {
231 /* Only float base types can be matrices. */
234 for (unsigned r
= 0; r
< rows
; r
++)
235 ret
->values
[0].u32
[r
] = ir
->value
.u
[r
];
240 /* Only float base types can be matrices. */
243 for (unsigned r
= 0; r
< rows
; r
++)
244 ret
->values
[0].i32
[r
] = ir
->value
.i
[r
];
248 case GLSL_TYPE_FLOAT
:
249 for (unsigned c
= 0; c
< cols
; c
++) {
250 for (unsigned r
= 0; r
< rows
; r
++)
251 ret
->values
[c
].f32
[r
] = ir
->value
.f
[c
* rows
+ r
];
255 case GLSL_TYPE_DOUBLE
:
256 for (unsigned c
= 0; c
< cols
; c
++) {
257 for (unsigned r
= 0; r
< rows
; r
++)
258 ret
->values
[c
].f64
[r
] = ir
->value
.d
[c
* rows
+ r
];
262 case GLSL_TYPE_UINT64
:
263 /* Only float base types can be matrices. */
266 for (unsigned r
= 0; r
< rows
; r
++)
267 ret
->values
[0].u64
[r
] = ir
->value
.u64
[r
];
270 case GLSL_TYPE_INT64
:
271 /* Only float base types can be matrices. */
274 for (unsigned r
= 0; r
< rows
; r
++)
275 ret
->values
[0].i64
[r
] = ir
->value
.i64
[r
];
279 /* Only float base types can be matrices. */
282 for (unsigned r
= 0; r
< rows
; r
++)
283 ret
->values
[0].u32
[r
] = ir
->value
.b
[r
] ? NIR_TRUE
: NIR_FALSE
;
287 case GLSL_TYPE_STRUCT
:
288 case GLSL_TYPE_ARRAY
:
289 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
291 ret
->num_elements
= ir
->type
->length
;
293 for (i
= 0; i
< ir
->type
->length
; i
++)
294 ret
->elements
[i
] = constant_copy(ir
->const_elements
[i
], mem_ctx
);
298 unreachable("not reached");
305 nir_visitor::visit(ir_variable
*ir
)
307 /* TODO: In future we should switch to using the NIR lowering pass but for
308 * now just ignore these variables as GLSL IR should have lowered them.
309 * Anything remaining are just dead vars that weren't cleaned up.
311 if (ir
->data
.mode
== ir_var_shader_shared
)
314 nir_variable
*var
= ralloc(shader
, nir_variable
);
315 var
->type
= ir
->type
;
316 var
->name
= ralloc_strdup(var
, ir
->name
);
318 var
->data
.read_only
= ir
->data
.read_only
;
319 var
->data
.centroid
= ir
->data
.centroid
;
320 var
->data
.sample
= ir
->data
.sample
;
321 var
->data
.patch
= ir
->data
.patch
;
322 var
->data
.invariant
= ir
->data
.invariant
;
323 var
->data
.location
= ir
->data
.location
;
324 var
->data
.compact
= false;
326 switch(ir
->data
.mode
) {
328 case ir_var_temporary
:
330 var
->data
.mode
= nir_var_global
;
332 var
->data
.mode
= nir_var_local
;
335 case ir_var_function_in
:
336 case ir_var_function_out
:
337 case ir_var_function_inout
:
338 case ir_var_const_in
:
339 var
->data
.mode
= nir_var_local
;
342 case ir_var_shader_in
:
343 if (shader
->stage
== MESA_SHADER_FRAGMENT
&&
344 ir
->data
.location
== VARYING_SLOT_FACE
) {
345 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
346 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
347 var
->data
.mode
= nir_var_system_value
;
348 } else if (shader
->stage
== MESA_SHADER_GEOMETRY
&&
349 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
350 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
351 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
352 var
->data
.mode
= nir_var_system_value
;
354 var
->data
.mode
= nir_var_shader_in
;
356 if (shader
->stage
== MESA_SHADER_TESS_EVAL
&&
357 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
358 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
359 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
363 /* Mark all the locations that require two slots */
364 if (glsl_type_is_dual_slot(glsl_without_array(var
->type
))) {
365 for (uint i
= 0; i
< glsl_count_attribute_slots(var
->type
, true); i
++) {
366 uint64_t bitfield
= BITFIELD64_BIT(var
->data
.location
+ i
);
367 shader
->info
.double_inputs_read
|= bitfield
;
372 case ir_var_shader_out
:
373 var
->data
.mode
= nir_var_shader_out
;
374 if (shader
->stage
== MESA_SHADER_TESS_CTRL
&&
375 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
376 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
377 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
382 var
->data
.mode
= nir_var_uniform
;
385 case ir_var_shader_storage
:
386 var
->data
.mode
= nir_var_shader_storage
;
389 case ir_var_system_value
:
390 var
->data
.mode
= nir_var_system_value
;
394 unreachable("not reached");
397 var
->data
.interpolation
= ir
->data
.interpolation
;
398 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
399 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
400 var
->data
.location_frac
= ir
->data
.location_frac
;
402 switch (ir
->data
.depth_layout
) {
403 case ir_depth_layout_none
:
404 var
->data
.depth_layout
= nir_depth_layout_none
;
406 case ir_depth_layout_any
:
407 var
->data
.depth_layout
= nir_depth_layout_any
;
409 case ir_depth_layout_greater
:
410 var
->data
.depth_layout
= nir_depth_layout_greater
;
412 case ir_depth_layout_less
:
413 var
->data
.depth_layout
= nir_depth_layout_less
;
415 case ir_depth_layout_unchanged
:
416 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
419 unreachable("not reached");
422 var
->data
.index
= ir
->data
.index
;
423 var
->data
.descriptor_set
= 0;
424 var
->data
.binding
= ir
->data
.binding
;
425 var
->data
.offset
= ir
->data
.offset
;
426 var
->data
.image
.read_only
= ir
->data
.memory_read_only
;
427 var
->data
.image
.write_only
= ir
->data
.memory_write_only
;
428 var
->data
.image
.coherent
= ir
->data
.memory_coherent
;
429 var
->data
.image
._volatile
= ir
->data
.memory_volatile
;
430 var
->data
.image
.restrict_flag
= ir
->data
.memory_restrict
;
431 var
->data
.image
.format
= ir
->data
.image_format
;
432 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
434 var
->num_state_slots
= ir
->get_num_state_slots();
435 if (var
->num_state_slots
> 0) {
436 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
437 var
->num_state_slots
);
439 ir_state_slot
*state_slots
= ir
->get_state_slots();
440 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
441 for (unsigned j
= 0; j
< 5; j
++)
442 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
443 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
446 var
->state_slots
= NULL
;
449 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
451 var
->interface_type
= ir
->get_interface_type();
453 if (var
->data
.mode
== nir_var_local
)
454 nir_function_impl_add_variable(impl
, var
);
456 nir_shader_add_variable(shader
, var
);
458 _mesa_hash_table_insert(var_table
, ir
, var
);
463 nir_function_visitor::visit_enter(ir_function
*ir
)
465 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
466 visitor
->create_function(sig
);
468 return visit_continue_with_parent
;
472 nir_visitor::create_function(ir_function_signature
*ir
)
474 if (ir
->is_intrinsic())
477 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
479 assert(ir
->parameters
.is_empty());
480 assert(ir
->return_type
== glsl_type::void_type
);
482 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
486 nir_visitor::visit(ir_function
*ir
)
488 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
493 nir_visitor::visit(ir_function_signature
*ir
)
495 if (ir
->is_intrinsic())
498 struct hash_entry
*entry
=
499 _mesa_hash_table_search(this->overload_table
, ir
);
502 nir_function
*func
= (nir_function
*) entry
->data
;
504 if (ir
->is_defined
) {
505 nir_function_impl
*impl
= nir_function_impl_create(func
);
508 assert(strcmp(func
->name
, "main") == 0);
509 assert(ir
->parameters
.is_empty());
510 assert(func
->return_type
== glsl_type::void_type
);
512 this->is_global
= false;
514 nir_builder_init(&b
, impl
);
515 b
.cursor
= nir_after_cf_list(&impl
->body
);
516 visit_exec_list(&ir
->body
, this);
518 this->is_global
= true;
525 nir_visitor::visit(ir_loop
*ir
)
528 visit_exec_list(&ir
->body_instructions
, this);
529 nir_pop_loop(&b
, NULL
);
533 nir_visitor::visit(ir_if
*ir
)
535 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
536 visit_exec_list(&ir
->then_instructions
, this);
537 nir_push_else(&b
, NULL
);
538 visit_exec_list(&ir
->else_instructions
, this);
539 nir_pop_if(&b
, NULL
);
543 nir_visitor::visit(ir_discard
*ir
)
546 * discards aren't treated as control flow, because before we lower them
547 * they can appear anywhere in the shader and the stuff after them may still
548 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
549 * discards will be immediately followed by a return.
552 nir_intrinsic_instr
*discard
;
554 discard
= nir_intrinsic_instr_create(this->shader
,
555 nir_intrinsic_discard_if
);
557 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
559 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
562 nir_builder_instr_insert(&b
, &discard
->instr
);
566 nir_visitor::visit(ir_emit_vertex
*ir
)
568 nir_intrinsic_instr
*instr
=
569 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
570 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
571 nir_builder_instr_insert(&b
, &instr
->instr
);
575 nir_visitor::visit(ir_end_primitive
*ir
)
577 nir_intrinsic_instr
*instr
=
578 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
579 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
580 nir_builder_instr_insert(&b
, &instr
->instr
);
584 nir_visitor::visit(ir_loop_jump
*ir
)
588 case ir_loop_jump::jump_break
:
589 type
= nir_jump_break
;
591 case ir_loop_jump::jump_continue
:
592 type
= nir_jump_continue
;
595 unreachable("not reached");
598 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
599 nir_builder_instr_insert(&b
, &instr
->instr
);
603 nir_visitor::visit(ir_return
*ir
)
605 if (ir
->value
!= NULL
) {
606 nir_intrinsic_instr
*copy
=
607 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
609 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
610 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
613 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
614 nir_builder_instr_insert(&b
, &instr
->instr
);
618 nir_visitor::visit(ir_call
*ir
)
620 if (ir
->callee
->is_intrinsic()) {
623 switch (ir
->callee
->intrinsic_id
) {
624 case ir_intrinsic_atomic_counter_read
:
625 op
= nir_intrinsic_atomic_counter_read_var
;
627 case ir_intrinsic_atomic_counter_increment
:
628 op
= nir_intrinsic_atomic_counter_inc_var
;
630 case ir_intrinsic_atomic_counter_predecrement
:
631 op
= nir_intrinsic_atomic_counter_dec_var
;
633 case ir_intrinsic_atomic_counter_add
:
634 op
= nir_intrinsic_atomic_counter_add_var
;
636 case ir_intrinsic_atomic_counter_and
:
637 op
= nir_intrinsic_atomic_counter_and_var
;
639 case ir_intrinsic_atomic_counter_or
:
640 op
= nir_intrinsic_atomic_counter_or_var
;
642 case ir_intrinsic_atomic_counter_xor
:
643 op
= nir_intrinsic_atomic_counter_xor_var
;
645 case ir_intrinsic_atomic_counter_min
:
646 op
= nir_intrinsic_atomic_counter_min_var
;
648 case ir_intrinsic_atomic_counter_max
:
649 op
= nir_intrinsic_atomic_counter_max_var
;
651 case ir_intrinsic_atomic_counter_exchange
:
652 op
= nir_intrinsic_atomic_counter_exchange_var
;
654 case ir_intrinsic_atomic_counter_comp_swap
:
655 op
= nir_intrinsic_atomic_counter_comp_swap_var
;
657 case ir_intrinsic_image_load
:
658 op
= nir_intrinsic_image_load
;
660 case ir_intrinsic_image_store
:
661 op
= nir_intrinsic_image_store
;
663 case ir_intrinsic_image_atomic_add
:
664 op
= nir_intrinsic_image_atomic_add
;
666 case ir_intrinsic_image_atomic_min
:
667 op
= nir_intrinsic_image_atomic_min
;
669 case ir_intrinsic_image_atomic_max
:
670 op
= nir_intrinsic_image_atomic_max
;
672 case ir_intrinsic_image_atomic_and
:
673 op
= nir_intrinsic_image_atomic_and
;
675 case ir_intrinsic_image_atomic_or
:
676 op
= nir_intrinsic_image_atomic_or
;
678 case ir_intrinsic_image_atomic_xor
:
679 op
= nir_intrinsic_image_atomic_xor
;
681 case ir_intrinsic_image_atomic_exchange
:
682 op
= nir_intrinsic_image_atomic_exchange
;
684 case ir_intrinsic_image_atomic_comp_swap
:
685 op
= nir_intrinsic_image_atomic_comp_swap
;
687 case ir_intrinsic_memory_barrier
:
688 op
= nir_intrinsic_memory_barrier
;
690 case ir_intrinsic_image_size
:
691 op
= nir_intrinsic_image_size
;
693 case ir_intrinsic_image_samples
:
694 op
= nir_intrinsic_image_samples
;
696 case ir_intrinsic_ssbo_store
:
697 op
= nir_intrinsic_store_ssbo
;
699 case ir_intrinsic_ssbo_load
:
700 op
= nir_intrinsic_load_ssbo
;
702 case ir_intrinsic_ssbo_atomic_add
:
703 op
= nir_intrinsic_ssbo_atomic_add
;
705 case ir_intrinsic_ssbo_atomic_and
:
706 op
= nir_intrinsic_ssbo_atomic_and
;
708 case ir_intrinsic_ssbo_atomic_or
:
709 op
= nir_intrinsic_ssbo_atomic_or
;
711 case ir_intrinsic_ssbo_atomic_xor
:
712 op
= nir_intrinsic_ssbo_atomic_xor
;
714 case ir_intrinsic_ssbo_atomic_min
:
715 assert(ir
->return_deref
);
716 if (ir
->return_deref
->type
== glsl_type::int_type
)
717 op
= nir_intrinsic_ssbo_atomic_imin
;
718 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
719 op
= nir_intrinsic_ssbo_atomic_umin
;
721 unreachable("Invalid type");
723 case ir_intrinsic_ssbo_atomic_max
:
724 assert(ir
->return_deref
);
725 if (ir
->return_deref
->type
== glsl_type::int_type
)
726 op
= nir_intrinsic_ssbo_atomic_imax
;
727 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
728 op
= nir_intrinsic_ssbo_atomic_umax
;
730 unreachable("Invalid type");
732 case ir_intrinsic_ssbo_atomic_exchange
:
733 op
= nir_intrinsic_ssbo_atomic_exchange
;
735 case ir_intrinsic_ssbo_atomic_comp_swap
:
736 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
738 case ir_intrinsic_shader_clock
:
739 op
= nir_intrinsic_shader_clock
;
741 case ir_intrinsic_group_memory_barrier
:
742 op
= nir_intrinsic_group_memory_barrier
;
744 case ir_intrinsic_memory_barrier_atomic_counter
:
745 op
= nir_intrinsic_memory_barrier_atomic_counter
;
747 case ir_intrinsic_memory_barrier_buffer
:
748 op
= nir_intrinsic_memory_barrier_buffer
;
750 case ir_intrinsic_memory_barrier_image
:
751 op
= nir_intrinsic_memory_barrier_image
;
753 case ir_intrinsic_memory_barrier_shared
:
754 op
= nir_intrinsic_memory_barrier_shared
;
756 case ir_intrinsic_shared_load
:
757 op
= nir_intrinsic_load_shared
;
759 case ir_intrinsic_shared_store
:
760 op
= nir_intrinsic_store_shared
;
762 case ir_intrinsic_shared_atomic_add
:
763 op
= nir_intrinsic_shared_atomic_add
;
765 case ir_intrinsic_shared_atomic_and
:
766 op
= nir_intrinsic_shared_atomic_and
;
768 case ir_intrinsic_shared_atomic_or
:
769 op
= nir_intrinsic_shared_atomic_or
;
771 case ir_intrinsic_shared_atomic_xor
:
772 op
= nir_intrinsic_shared_atomic_xor
;
774 case ir_intrinsic_shared_atomic_min
:
775 assert(ir
->return_deref
);
776 if (ir
->return_deref
->type
== glsl_type::int_type
)
777 op
= nir_intrinsic_shared_atomic_imin
;
778 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
779 op
= nir_intrinsic_shared_atomic_umin
;
781 unreachable("Invalid type");
783 case ir_intrinsic_shared_atomic_max
:
784 assert(ir
->return_deref
);
785 if (ir
->return_deref
->type
== glsl_type::int_type
)
786 op
= nir_intrinsic_shared_atomic_imax
;
787 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
788 op
= nir_intrinsic_shared_atomic_umax
;
790 unreachable("Invalid type");
792 case ir_intrinsic_shared_atomic_exchange
:
793 op
= nir_intrinsic_shared_atomic_exchange
;
795 case ir_intrinsic_shared_atomic_comp_swap
:
796 op
= nir_intrinsic_shared_atomic_comp_swap
;
798 case ir_intrinsic_vote_any
:
799 op
= nir_intrinsic_vote_any
;
801 case ir_intrinsic_vote_all
:
802 op
= nir_intrinsic_vote_all
;
804 case ir_intrinsic_vote_eq
:
805 op
= nir_intrinsic_vote_eq
;
807 case ir_intrinsic_ballot
:
808 op
= nir_intrinsic_ballot
;
810 case ir_intrinsic_read_invocation
:
811 op
= nir_intrinsic_read_invocation
;
813 case ir_intrinsic_read_first_invocation
:
814 op
= nir_intrinsic_read_first_invocation
;
817 unreachable("not reached");
820 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
821 nir_dest
*dest
= &instr
->dest
;
824 case nir_intrinsic_atomic_counter_read_var
:
825 case nir_intrinsic_atomic_counter_inc_var
:
826 case nir_intrinsic_atomic_counter_dec_var
:
827 case nir_intrinsic_atomic_counter_add_var
:
828 case nir_intrinsic_atomic_counter_min_var
:
829 case nir_intrinsic_atomic_counter_max_var
:
830 case nir_intrinsic_atomic_counter_and_var
:
831 case nir_intrinsic_atomic_counter_or_var
:
832 case nir_intrinsic_atomic_counter_xor_var
:
833 case nir_intrinsic_atomic_counter_exchange_var
:
834 case nir_intrinsic_atomic_counter_comp_swap_var
: {
835 /* Set the counter variable dereference. */
836 exec_node
*param
= ir
->actual_parameters
.get_head();
837 ir_dereference
*counter
= (ir_dereference
*)param
;
839 instr
->variables
[0] = evaluate_deref(&instr
->instr
, counter
);
840 param
= param
->get_next();
842 /* Set the intrinsic destination. */
843 if (ir
->return_deref
) {
844 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
847 /* Set the intrinsic parameters. */
848 if (!param
->is_tail_sentinel()) {
850 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
851 param
= param
->get_next();
854 if (!param
->is_tail_sentinel()) {
856 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
857 param
= param
->get_next();
860 nir_builder_instr_insert(&b
, &instr
->instr
);
863 case nir_intrinsic_image_load
:
864 case nir_intrinsic_image_store
:
865 case nir_intrinsic_image_atomic_add
:
866 case nir_intrinsic_image_atomic_min
:
867 case nir_intrinsic_image_atomic_max
:
868 case nir_intrinsic_image_atomic_and
:
869 case nir_intrinsic_image_atomic_or
:
870 case nir_intrinsic_image_atomic_xor
:
871 case nir_intrinsic_image_atomic_exchange
:
872 case nir_intrinsic_image_atomic_comp_swap
:
873 case nir_intrinsic_image_samples
:
874 case nir_intrinsic_image_size
: {
875 nir_ssa_undef_instr
*instr_undef
=
876 nir_ssa_undef_instr_create(shader
, 1, 32);
877 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
879 /* Set the image variable dereference. */
880 exec_node
*param
= ir
->actual_parameters
.get_head();
881 ir_dereference
*image
= (ir_dereference
*)param
;
882 const glsl_type
*type
=
883 image
->variable_referenced()->type
->without_array();
885 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
886 param
= param
->get_next();
888 /* Set the intrinsic destination. */
889 if (ir
->return_deref
) {
890 unsigned num_components
= ir
->return_deref
->type
->vector_elements
;
891 if (instr
->intrinsic
== nir_intrinsic_image_size
)
892 instr
->num_components
= num_components
;
893 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
894 num_components
, 32, NULL
);
897 if (op
== nir_intrinsic_image_size
||
898 op
== nir_intrinsic_image_samples
) {
899 nir_builder_instr_insert(&b
, &instr
->instr
);
903 /* Set the address argument, extending the coordinate vector to four
906 nir_ssa_def
*src_addr
=
907 evaluate_rvalue((ir_dereference
*)param
);
908 nir_ssa_def
*srcs
[4];
910 for (int i
= 0; i
< 4; i
++) {
911 if (i
< type
->coordinate_components())
912 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
914 srcs
[i
] = &instr_undef
->def
;
917 instr
->src
[0] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
918 param
= param
->get_next();
920 /* Set the sample argument, which is undefined for single-sample
923 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
925 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
926 param
= param
->get_next();
928 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
931 /* Set the intrinsic parameters. */
932 if (!param
->is_tail_sentinel()) {
934 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
935 param
= param
->get_next();
938 if (!param
->is_tail_sentinel()) {
940 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
941 param
= param
->get_next();
943 nir_builder_instr_insert(&b
, &instr
->instr
);
946 case nir_intrinsic_memory_barrier
:
947 case nir_intrinsic_group_memory_barrier
:
948 case nir_intrinsic_memory_barrier_atomic_counter
:
949 case nir_intrinsic_memory_barrier_buffer
:
950 case nir_intrinsic_memory_barrier_image
:
951 case nir_intrinsic_memory_barrier_shared
:
952 nir_builder_instr_insert(&b
, &instr
->instr
);
954 case nir_intrinsic_shader_clock
:
955 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 2, 32, NULL
);
956 instr
->num_components
= 2;
957 nir_builder_instr_insert(&b
, &instr
->instr
);
959 case nir_intrinsic_store_ssbo
: {
960 exec_node
*param
= ir
->actual_parameters
.get_head();
961 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
963 param
= param
->get_next();
964 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
966 param
= param
->get_next();
967 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
969 param
= param
->get_next();
970 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
973 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
974 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
975 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
976 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
977 instr
->num_components
= val
->type
->vector_elements
;
979 nir_builder_instr_insert(&b
, &instr
->instr
);
982 case nir_intrinsic_load_ssbo
: {
983 exec_node
*param
= ir
->actual_parameters
.get_head();
984 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
986 param
= param
->get_next();
987 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
989 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
990 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
992 const glsl_type
*type
= ir
->return_deref
->var
->type
;
993 instr
->num_components
= type
->vector_elements
;
995 /* Setup destination register */
996 unsigned bit_size
= glsl_get_bit_size(type
);
997 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
998 type
->vector_elements
, bit_size
, NULL
);
1000 /* Insert the created nir instruction now since in the case of boolean
1001 * result we will need to emit another instruction after it
1003 nir_builder_instr_insert(&b
, &instr
->instr
);
1006 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
1007 * consider a true boolean to be ~0. Fix this up with a != 0
1010 if (type
->is_boolean()) {
1011 nir_alu_instr
*load_ssbo_compare
=
1012 nir_alu_instr_create(shader
, nir_op_ine
);
1013 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
1014 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
1015 load_ssbo_compare
->src
[1].src
=
1016 nir_src_for_ssa(nir_imm_int(&b
, 0));
1017 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
1018 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
1019 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
1020 &load_ssbo_compare
->dest
.dest
,
1021 type
->vector_elements
, bit_size
, NULL
);
1022 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
1023 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
1024 dest
= &load_ssbo_compare
->dest
.dest
;
1028 case nir_intrinsic_ssbo_atomic_add
:
1029 case nir_intrinsic_ssbo_atomic_imin
:
1030 case nir_intrinsic_ssbo_atomic_umin
:
1031 case nir_intrinsic_ssbo_atomic_imax
:
1032 case nir_intrinsic_ssbo_atomic_umax
:
1033 case nir_intrinsic_ssbo_atomic_and
:
1034 case nir_intrinsic_ssbo_atomic_or
:
1035 case nir_intrinsic_ssbo_atomic_xor
:
1036 case nir_intrinsic_ssbo_atomic_exchange
:
1037 case nir_intrinsic_ssbo_atomic_comp_swap
: {
1038 int param_count
= ir
->actual_parameters
.length();
1039 assert(param_count
== 3 || param_count
== 4);
1042 exec_node
*param
= ir
->actual_parameters
.get_head();
1043 ir_instruction
*inst
= (ir_instruction
*) param
;
1044 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1047 param
= param
->get_next();
1048 inst
= (ir_instruction
*) param
;
1049 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1051 /* data1 parameter (this is always present) */
1052 param
= param
->get_next();
1053 inst
= (ir_instruction
*) param
;
1054 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1056 /* data2 parameter (only with atomic_comp_swap) */
1057 if (param_count
== 4) {
1058 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
1059 param
= param
->get_next();
1060 inst
= (ir_instruction
*) param
;
1061 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1065 assert(ir
->return_deref
);
1066 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1067 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1068 nir_builder_instr_insert(&b
, &instr
->instr
);
1071 case nir_intrinsic_load_shared
: {
1072 exec_node
*param
= ir
->actual_parameters
.get_head();
1073 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1075 nir_intrinsic_set_base(instr
, 0);
1076 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1078 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1079 instr
->num_components
= type
->vector_elements
;
1081 /* Setup destination register */
1082 unsigned bit_size
= glsl_get_bit_size(type
);
1083 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1084 type
->vector_elements
, bit_size
, NULL
);
1086 nir_builder_instr_insert(&b
, &instr
->instr
);
1089 case nir_intrinsic_store_shared
: {
1090 exec_node
*param
= ir
->actual_parameters
.get_head();
1091 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1093 param
= param
->get_next();
1094 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1096 param
= param
->get_next();
1097 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1100 nir_intrinsic_set_base(instr
, 0);
1101 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1103 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1105 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1106 instr
->num_components
= val
->type
->vector_elements
;
1108 nir_builder_instr_insert(&b
, &instr
->instr
);
1111 case nir_intrinsic_shared_atomic_add
:
1112 case nir_intrinsic_shared_atomic_imin
:
1113 case nir_intrinsic_shared_atomic_umin
:
1114 case nir_intrinsic_shared_atomic_imax
:
1115 case nir_intrinsic_shared_atomic_umax
:
1116 case nir_intrinsic_shared_atomic_and
:
1117 case nir_intrinsic_shared_atomic_or
:
1118 case nir_intrinsic_shared_atomic_xor
:
1119 case nir_intrinsic_shared_atomic_exchange
:
1120 case nir_intrinsic_shared_atomic_comp_swap
: {
1121 int param_count
= ir
->actual_parameters
.length();
1122 assert(param_count
== 2 || param_count
== 3);
1125 exec_node
*param
= ir
->actual_parameters
.get_head();
1126 ir_instruction
*inst
= (ir_instruction
*) param
;
1127 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1129 /* data1 parameter (this is always present) */
1130 param
= param
->get_next();
1131 inst
= (ir_instruction
*) param
;
1132 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1134 /* data2 parameter (only with atomic_comp_swap) */
1135 if (param_count
== 3) {
1136 assert(op
== nir_intrinsic_shared_atomic_comp_swap
);
1137 param
= param
->get_next();
1138 inst
= (ir_instruction
*) param
;
1140 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1144 assert(ir
->return_deref
);
1145 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1146 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1147 ir
->return_deref
->type
->vector_elements
,
1149 nir_builder_instr_insert(&b
, &instr
->instr
);
1152 case nir_intrinsic_vote_any
:
1153 case nir_intrinsic_vote_all
:
1154 case nir_intrinsic_vote_eq
: {
1155 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
1157 instr
->variables
[0] = evaluate_deref(&instr
->instr
, ir
->return_deref
);
1159 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1160 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1162 nir_builder_instr_insert(&b
, &instr
->instr
);
1166 case nir_intrinsic_ballot
: {
1167 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1168 ir
->return_deref
->type
->vector_elements
, 64, NULL
);
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
);
1176 case nir_intrinsic_read_invocation
: {
1177 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1178 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1179 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1181 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1182 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1184 ir_rvalue
*invocation
= (ir_rvalue
*) ir
->actual_parameters
.get_head()->next
;
1185 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(invocation
));
1187 nir_builder_instr_insert(&b
, &instr
->instr
);
1190 case nir_intrinsic_read_first_invocation
: {
1191 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1192 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1193 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1195 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1196 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1198 nir_builder_instr_insert(&b
, &instr
->instr
);
1202 unreachable("not reached");
1205 if (ir
->return_deref
) {
1206 nir_intrinsic_instr
*store_instr
=
1207 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
1208 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1209 nir_intrinsic_set_write_mask(store_instr
,
1210 (1 << store_instr
->num_components
) - 1);
1212 store_instr
->variables
[0] =
1213 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
1214 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
1216 nir_builder_instr_insert(&b
, &store_instr
->instr
);
1222 struct hash_entry
*entry
=
1223 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1225 nir_function
*callee
= (nir_function
*) entry
->data
;
1227 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
1230 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
1231 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
1235 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
1236 nir_builder_instr_insert(&b
, &instr
->instr
);
1240 nir_visitor::visit(ir_assignment
*ir
)
1242 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1244 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1245 ir
->lhs
->variable_referenced()->data
.precise
;
1247 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1248 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1249 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1250 nir_intrinsic_instr
*copy
=
1251 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1253 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1254 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1256 if (ir
->condition
) {
1257 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1258 nir_builder_instr_insert(&b
, ©
->instr
);
1259 nir_pop_if(&b
, NULL
);
1261 nir_builder_instr_insert(&b
, ©
->instr
);
1266 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1268 ir
->lhs
->accept(this);
1269 nir_deref_var
*lhs_deref
= this->deref_head
;
1270 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1272 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1273 /* GLSL IR will give us the input to the write-masked assignment in a
1274 * single packed vector. So, for example, if the writemask is xzw, then
1275 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1279 unsigned component
= 0;
1280 for (unsigned i
= 0; i
< 4; i
++) {
1281 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1283 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1286 nir_intrinsic_instr
*store
=
1287 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1288 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1289 nir_intrinsic_set_write_mask(store
, ir
->write_mask
);
1290 store
->variables
[0] = nir_deref_var_clone(lhs_deref
, store
);
1291 store
->src
[0] = nir_src_for_ssa(src
);
1293 if (ir
->condition
) {
1294 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1295 nir_builder_instr_insert(&b
, &store
->instr
);
1296 nir_pop_if(&b
, NULL
);
1298 nir_builder_instr_insert(&b
, &store
->instr
);
1303 * Given an instruction, returns a pointer to its destination or NULL if there
1304 * is no destination.
1306 * Note that this only handles instructions we generate at this level.
1309 get_instr_dest(nir_instr
*instr
)
1311 nir_alu_instr
*alu_instr
;
1312 nir_intrinsic_instr
*intrinsic_instr
;
1313 nir_tex_instr
*tex_instr
;
1315 switch (instr
->type
) {
1316 case nir_instr_type_alu
:
1317 alu_instr
= nir_instr_as_alu(instr
);
1318 return &alu_instr
->dest
.dest
;
1320 case nir_instr_type_intrinsic
:
1321 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1322 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1323 return &intrinsic_instr
->dest
;
1327 case nir_instr_type_tex
:
1328 tex_instr
= nir_instr_as_tex(instr
);
1329 return &tex_instr
->dest
;
1332 unreachable("not reached");
1339 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1342 nir_dest
*dest
= get_instr_dest(instr
);
1345 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1347 nir_builder_instr_insert(&b
, instr
);
1350 assert(dest
->is_ssa
);
1351 this->result
= &dest
->ssa
;
1356 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1359 if (ir
->as_dereference() || ir
->as_constant()) {
1361 * A dereference is being used on the right hand side, which means we
1362 * must emit a variable load.
1365 nir_intrinsic_instr
*load_instr
=
1366 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1367 load_instr
->num_components
= ir
->type
->vector_elements
;
1368 load_instr
->variables
[0] = this->deref_head
;
1369 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1370 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1371 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
, bit_size
);
1374 return this->result
;
1378 type_is_float(glsl_base_type type
)
1380 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
;
1384 type_is_signed(glsl_base_type type
)
1386 return type
== GLSL_TYPE_INT
|| type
== GLSL_TYPE_INT64
;
1390 nir_visitor::visit(ir_expression
*ir
)
1392 /* Some special cases */
1393 switch (ir
->operation
) {
1394 case ir_binop_ubo_load
: {
1395 nir_intrinsic_instr
*load
=
1396 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1397 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1398 load
->num_components
= ir
->type
->vector_elements
;
1399 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1400 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1401 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1404 * In UBO's, a true boolean value is any non-zero value, but we consider
1405 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1408 if (ir
->type
->is_boolean())
1409 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1414 case ir_unop_interpolate_at_centroid
:
1415 case ir_binop_interpolate_at_offset
:
1416 case ir_binop_interpolate_at_sample
: {
1417 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1418 ir_swizzle
*swizzle
= NULL
;
1420 /* the api does not allow a swizzle here, but the varying packing code
1421 * may have pushed one into here.
1423 swizzle
= ir
->operands
[0]->as_swizzle();
1425 deref
= swizzle
->val
->as_dereference();
1429 deref
->accept(this);
1431 nir_intrinsic_op op
;
1432 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1433 switch (ir
->operation
) {
1434 case ir_unop_interpolate_at_centroid
:
1435 op
= nir_intrinsic_interp_var_at_centroid
;
1437 case ir_binop_interpolate_at_offset
:
1438 op
= nir_intrinsic_interp_var_at_offset
;
1440 case ir_binop_interpolate_at_sample
:
1441 op
= nir_intrinsic_interp_var_at_sample
;
1444 unreachable("Invalid interpolation intrinsic");
1447 /* This case can happen if the vertex shader does not write the
1448 * given varying. In this case, the linker will lower it to a
1449 * global variable. Since interpolating a variable makes no
1450 * sense, we'll just turn it into a load which will probably
1451 * eventually end up as an SSA definition.
1453 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1454 op
= nir_intrinsic_load_var
;
1457 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1458 intrin
->num_components
= deref
->type
->vector_elements
;
1459 intrin
->variables
[0] = this->deref_head
;
1460 ralloc_steal(intrin
, intrin
->variables
[0]);
1462 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1463 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1464 intrin
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1466 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1467 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1470 unsigned swiz
[4] = {
1471 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1474 result
= nir_swizzle(&b
, result
, swiz
,
1475 swizzle
->type
->vector_elements
, false);
1485 nir_ssa_def
*srcs
[4];
1486 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1487 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1489 glsl_base_type types
[4];
1490 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1492 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1494 types
[i
] = GLSL_TYPE_FLOAT
;
1496 glsl_base_type out_type
;
1498 out_type
= ir
->type
->base_type
;
1500 out_type
= GLSL_TYPE_FLOAT
;
1502 switch (ir
->operation
) {
1503 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1504 case ir_unop_logic_not
:
1505 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1508 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1509 : nir_ineg(&b
, srcs
[0]);
1512 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1513 : nir_iabs(&b
, srcs
[0]);
1515 case ir_unop_saturate
:
1516 assert(type_is_float(types
[0]));
1517 result
= nir_fsat(&b
, srcs
[0]);
1520 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1521 : nir_isign(&b
, srcs
[0]);
1523 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1524 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1525 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1526 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1527 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1528 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1529 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1531 result
= supports_ints
? nir_i2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1534 result
= supports_ints
? nir_u2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1537 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1571 case ir_unop_i642u64
:
1572 case ir_unop_u642i64
: {
1573 nir_alu_type src_type
= nir_get_nir_type_for_glsl_base_type(types
[0]);
1574 nir_alu_type dst_type
= nir_get_nir_type_for_glsl_base_type(out_type
);
1575 result
= nir_build_alu(&b
, nir_type_conversion_op(src_type
, dst_type
),
1576 srcs
[0], NULL
, NULL
, NULL
);
1577 /* b2i and b2f don't have fixed bit-size versions so the builder will
1578 * just assume 32 and we have to fix it up here.
1580 result
->bit_size
= nir_alu_type_get_type_size(dst_type
);
1584 case ir_unop_bitcast_i2f
:
1585 case ir_unop_bitcast_f2i
:
1586 case ir_unop_bitcast_u2f
:
1587 case ir_unop_bitcast_f2u
:
1588 case ir_unop_bitcast_i642d
:
1589 case ir_unop_bitcast_d2i64
:
1590 case ir_unop_bitcast_u642d
:
1591 case ir_unop_bitcast_d2u64
:
1592 case ir_unop_subroutine_to_int
:
1594 result
= nir_imov(&b
, srcs
[0]);
1596 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1597 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1598 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1599 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1600 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1601 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1602 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1603 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1604 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1605 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1606 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1607 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1608 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1609 case ir_unop_pack_snorm_2x16
:
1610 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1612 case ir_unop_pack_snorm_4x8
:
1613 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1615 case ir_unop_pack_unorm_2x16
:
1616 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1618 case ir_unop_pack_unorm_4x8
:
1619 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1621 case ir_unop_pack_half_2x16
:
1622 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1624 case ir_unop_unpack_snorm_2x16
:
1625 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1627 case ir_unop_unpack_snorm_4x8
:
1628 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1630 case ir_unop_unpack_unorm_2x16
:
1631 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1633 case ir_unop_unpack_unorm_4x8
:
1634 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1636 case ir_unop_unpack_half_2x16
:
1637 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1639 case ir_unop_pack_double_2x32
:
1640 case ir_unop_pack_int_2x32
:
1641 case ir_unop_pack_uint_2x32
:
1642 result
= nir_pack_64_2x32(&b
, srcs
[0]);
1644 case ir_unop_unpack_double_2x32
:
1645 case ir_unop_unpack_int_2x32
:
1646 case ir_unop_unpack_uint_2x32
:
1647 result
= nir_unpack_64_2x32(&b
, srcs
[0]);
1649 case ir_unop_bitfield_reverse
:
1650 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1652 case ir_unop_bit_count
:
1653 result
= nir_bit_count(&b
, srcs
[0]);
1655 case ir_unop_find_msb
:
1657 case GLSL_TYPE_UINT
:
1658 result
= nir_ufind_msb(&b
, srcs
[0]);
1661 result
= nir_ifind_msb(&b
, srcs
[0]);
1664 unreachable("Invalid type for findMSB()");
1667 case ir_unop_find_lsb
:
1668 result
= nir_find_lsb(&b
, srcs
[0]);
1672 switch (ir
->type
->vector_elements
) {
1674 switch (ir
->operands
[0]->type
->vector_elements
) {
1675 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1676 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1677 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1678 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1679 default: unreachable("not reached");
1683 switch (ir
->operands
[0]->type
->vector_elements
) {
1684 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1685 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1686 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1687 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1688 default: unreachable("not reached");
1692 switch (ir
->operands
[0]->type
->vector_elements
) {
1693 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1694 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1695 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1696 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1697 default: unreachable("not reached");
1701 switch (ir
->operands
[0]->type
->vector_elements
) {
1702 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1703 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1704 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1705 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1706 default: unreachable("not reached");
1710 unreachable("not reached");
1713 case ir_unop_get_buffer_size
: {
1714 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1716 nir_intrinsic_get_buffer_size
);
1717 load
->num_components
= ir
->type
->vector_elements
;
1718 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1719 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1720 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1725 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1726 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1729 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1730 : nir_isub(&b
, srcs
[0], srcs
[1]);
1733 result
= type_is_float(out_type
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1734 : nir_imul(&b
, srcs
[0], srcs
[1]);
1737 if (type_is_float(out_type
))
1738 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1739 else if (type_is_signed(out_type
))
1740 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1742 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1745 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1746 : nir_umod(&b
, srcs
[0], srcs
[1]);
1749 if (type_is_float(out_type
))
1750 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1751 else if (type_is_signed(out_type
))
1752 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1754 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1757 if (type_is_float(out_type
))
1758 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1759 else if (type_is_signed(out_type
))
1760 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1762 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1764 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1765 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1766 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1767 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1768 case ir_binop_logic_and
:
1769 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1770 : nir_fand(&b
, srcs
[0], srcs
[1]);
1772 case ir_binop_logic_or
:
1773 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1774 : nir_for(&b
, srcs
[0], srcs
[1]);
1776 case ir_binop_logic_xor
:
1777 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1778 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1780 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1781 case ir_binop_rshift
:
1782 result
= (type_is_signed(out_type
)) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1783 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1785 case ir_binop_imul_high
:
1786 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1787 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1789 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1790 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1792 if (supports_ints
) {
1793 if (type_is_float(types
[0]))
1794 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1795 else if (type_is_signed(types
[0]))
1796 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1798 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1800 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1803 case ir_binop_greater
:
1804 if (supports_ints
) {
1805 if (type_is_float(types
[0]))
1806 result
= nir_flt(&b
, srcs
[1], srcs
[0]);
1807 else if (type_is_signed(types
[0]))
1808 result
= nir_ilt(&b
, srcs
[1], srcs
[0]);
1810 result
= nir_ult(&b
, srcs
[1], srcs
[0]);
1812 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1815 case ir_binop_lequal
:
1816 if (supports_ints
) {
1817 if (type_is_float(types
[0]))
1818 result
= nir_fge(&b
, srcs
[1], srcs
[0]);
1819 else if (type_is_signed(types
[0]))
1820 result
= nir_ige(&b
, srcs
[1], srcs
[0]);
1822 result
= nir_uge(&b
, srcs
[1], srcs
[0]);
1824 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1827 case ir_binop_gequal
:
1828 if (supports_ints
) {
1829 if (type_is_float(types
[0]))
1830 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1831 else if (type_is_signed(types
[0]))
1832 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1834 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1836 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1839 case ir_binop_equal
:
1840 if (supports_ints
) {
1841 if (type_is_float(types
[0]))
1842 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1844 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1846 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1849 case ir_binop_nequal
:
1850 if (supports_ints
) {
1851 if (type_is_float(types
[0]))
1852 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1854 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1856 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1859 case ir_binop_all_equal
:
1860 if (supports_ints
) {
1861 if (type_is_float(types
[0])) {
1862 switch (ir
->operands
[0]->type
->vector_elements
) {
1863 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1864 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1865 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1866 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1868 unreachable("not reached");
1871 switch (ir
->operands
[0]->type
->vector_elements
) {
1872 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1873 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1874 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1875 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1877 unreachable("not reached");
1881 switch (ir
->operands
[0]->type
->vector_elements
) {
1882 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1883 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1884 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1885 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1887 unreachable("not reached");
1891 case ir_binop_any_nequal
:
1892 if (supports_ints
) {
1893 if (type_is_float(types
[0])) {
1894 switch (ir
->operands
[0]->type
->vector_elements
) {
1895 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1896 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1897 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1898 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1900 unreachable("not reached");
1903 switch (ir
->operands
[0]->type
->vector_elements
) {
1904 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1905 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1906 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1907 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1909 unreachable("not reached");
1913 switch (ir
->operands
[0]->type
->vector_elements
) {
1914 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1915 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1916 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1917 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1919 unreachable("not reached");
1924 switch (ir
->operands
[0]->type
->vector_elements
) {
1925 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1926 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1927 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1929 unreachable("not reached");
1933 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1935 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1938 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1942 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1944 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1946 case ir_triop_bitfield_extract
:
1947 result
= (out_type
== GLSL_TYPE_INT
) ?
1948 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1949 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1951 case ir_quadop_bitfield_insert
:
1952 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1954 case ir_quadop_vector
:
1955 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1959 unreachable("not reached");
1964 nir_visitor::visit(ir_swizzle
*ir
)
1966 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1967 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1968 ir
->type
->vector_elements
, !supports_ints
);
1972 nir_visitor::visit(ir_texture
*ir
)
1979 num_srcs
= 1; /* coordinate */
1984 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1985 num_srcs
= 2; /* coordinate, bias/lod */
1989 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1995 if (ir
->lod_info
.lod
!= NULL
)
1996 num_srcs
= 2; /* coordinate, lod */
1998 num_srcs
= 1; /* coordinate */
2002 op
= nir_texop_txf_ms
;
2003 num_srcs
= 2; /* coordinate, sample_index */
2008 if (ir
->lod_info
.lod
!= NULL
)
2009 num_srcs
= 1; /* lod */
2016 num_srcs
= 1; /* coordinate */
2021 num_srcs
= 1; /* coordinate */
2024 case ir_query_levels
:
2025 op
= nir_texop_query_levels
;
2029 case ir_texture_samples
:
2030 op
= nir_texop_texture_samples
;
2034 case ir_samples_identical
:
2035 op
= nir_texop_samples_identical
;
2036 num_srcs
= 1; /* coordinate */
2040 unreachable("not reached");
2043 if (ir
->projector
!= NULL
)
2045 if (ir
->shadow_comparator
!= NULL
)
2047 if (ir
->offset
!= NULL
)
2050 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
2053 instr
->sampler_dim
=
2054 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
2055 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
2056 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
2057 if (instr
->is_shadow
)
2058 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
2059 switch (ir
->type
->base_type
) {
2060 case GLSL_TYPE_FLOAT
:
2061 instr
->dest_type
= nir_type_float
;
2064 instr
->dest_type
= nir_type_int
;
2066 case GLSL_TYPE_BOOL
:
2067 case GLSL_TYPE_UINT
:
2068 instr
->dest_type
= nir_type_uint
;
2071 unreachable("not reached");
2074 instr
->texture
= evaluate_deref(&instr
->instr
, ir
->sampler
);
2076 unsigned src_number
= 0;
2078 if (ir
->coordinate
!= NULL
) {
2079 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
2080 instr
->src
[src_number
].src
=
2081 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
2082 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2086 if (ir
->projector
!= NULL
) {
2087 instr
->src
[src_number
].src
=
2088 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
2089 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2093 if (ir
->shadow_comparator
!= NULL
) {
2094 instr
->src
[src_number
].src
=
2095 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparator
));
2096 instr
->src
[src_number
].src_type
= nir_tex_src_comparator
;
2100 if (ir
->offset
!= NULL
) {
2101 /* we don't support multiple offsets yet */
2102 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2104 instr
->src
[src_number
].src
=
2105 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
2106 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2112 instr
->src
[src_number
].src
=
2113 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
2114 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2121 if (ir
->lod_info
.lod
!= NULL
) {
2122 instr
->src
[src_number
].src
=
2123 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
2124 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2130 instr
->src
[src_number
].src
=
2131 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
2132 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2134 instr
->src
[src_number
].src
=
2135 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
2136 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2141 instr
->src
[src_number
].src
=
2142 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
2143 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2148 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2155 assert(src_number
== num_srcs
);
2157 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2158 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2162 nir_visitor::visit(ir_constant
*ir
)
2165 * We don't know if this variable is an array or struct that gets
2166 * dereferenced, so do the safe thing an make it a variable with a
2167 * constant initializer and return a dereference.
2171 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2172 var
->data
.read_only
= true;
2173 var
->constant_initializer
= constant_copy(ir
, var
);
2175 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2176 this->deref_tail
= &this->deref_head
->deref
;
2180 nir_visitor::visit(ir_dereference_variable
*ir
)
2182 struct hash_entry
*entry
=
2183 _mesa_hash_table_search(this->var_table
, ir
->var
);
2185 nir_variable
*var
= (nir_variable
*) entry
->data
;
2187 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2188 this->deref_head
= deref
;
2189 this->deref_tail
= &deref
->deref
;
2193 nir_visitor::visit(ir_dereference_record
*ir
)
2195 ir
->record
->accept(this);
2197 int field_index
= ir
->field_idx
;
2198 assert(field_index
>= 0);
2200 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2201 deref
->deref
.type
= ir
->type
;
2202 this->deref_tail
->child
= &deref
->deref
;
2203 this->deref_tail
= &deref
->deref
;
2207 nir_visitor::visit(ir_dereference_array
*ir
)
2209 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2210 deref
->deref
.type
= ir
->type
;
2212 ir_constant
*const_index
= ir
->array_index
->as_constant();
2213 if (const_index
!= NULL
) {
2214 deref
->deref_array_type
= nir_deref_array_type_direct
;
2215 deref
->base_offset
= const_index
->value
.u
[0];
2217 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2219 nir_src_for_ssa(evaluate_rvalue(ir
->array_index
));
2222 ir
->array
->accept(this);
2224 this->deref_tail
->child
= &deref
->deref
;
2225 ralloc_steal(this->deref_tail
, deref
);
2226 this->deref_tail
= &deref
->deref
;
2230 nir_visitor::visit(ir_barrier
*)
2232 nir_intrinsic_instr
*instr
=
2233 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2234 nir_builder_instr_insert(&b
, &instr
->instr
);