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 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
290 ret
->num_elements
= ir
->type
->length
;
293 foreach_in_list(ir_constant
, field
, &ir
->components
) {
294 ret
->elements
[i
] = constant_copy(field
, mem_ctx
);
299 case GLSL_TYPE_ARRAY
:
300 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
302 ret
->num_elements
= ir
->type
->length
;
304 for (i
= 0; i
< ir
->type
->length
; i
++)
305 ret
->elements
[i
] = constant_copy(ir
->array_elements
[i
], mem_ctx
);
309 unreachable("not reached");
316 nir_visitor::visit(ir_variable
*ir
)
318 /* TODO: In future we should switch to using the NIR lowering pass but for
319 * now just ignore these variables as GLSL IR should have lowered them.
320 * Anything remaining are just dead vars that weren't cleaned up.
322 if (ir
->data
.mode
== ir_var_shader_shared
)
325 nir_variable
*var
= ralloc(shader
, nir_variable
);
326 var
->type
= ir
->type
;
327 var
->name
= ralloc_strdup(var
, ir
->name
);
329 var
->data
.read_only
= ir
->data
.read_only
;
330 var
->data
.centroid
= ir
->data
.centroid
;
331 var
->data
.sample
= ir
->data
.sample
;
332 var
->data
.patch
= ir
->data
.patch
;
333 var
->data
.invariant
= ir
->data
.invariant
;
334 var
->data
.location
= ir
->data
.location
;
335 var
->data
.compact
= false;
337 switch(ir
->data
.mode
) {
339 case ir_var_temporary
:
341 var
->data
.mode
= nir_var_global
;
343 var
->data
.mode
= nir_var_local
;
346 case ir_var_function_in
:
347 case ir_var_function_out
:
348 case ir_var_function_inout
:
349 case ir_var_const_in
:
350 var
->data
.mode
= nir_var_local
;
353 case ir_var_shader_in
:
354 if (shader
->stage
== MESA_SHADER_FRAGMENT
&&
355 ir
->data
.location
== VARYING_SLOT_FACE
) {
356 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
357 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
358 var
->data
.mode
= nir_var_system_value
;
359 } else if (shader
->stage
== MESA_SHADER_GEOMETRY
&&
360 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
361 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
362 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
363 var
->data
.mode
= nir_var_system_value
;
365 var
->data
.mode
= nir_var_shader_in
;
367 if (shader
->stage
== MESA_SHADER_TESS_EVAL
&&
368 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
369 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
370 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
374 /* Mark all the locations that require two slots */
375 if (glsl_type_is_dual_slot(glsl_without_array(var
->type
))) {
376 for (uint i
= 0; i
< glsl_count_attribute_slots(var
->type
, true); i
++) {
377 uint64_t bitfield
= BITFIELD64_BIT(var
->data
.location
+ i
);
378 shader
->info
.double_inputs_read
|= bitfield
;
383 case ir_var_shader_out
:
384 var
->data
.mode
= nir_var_shader_out
;
385 if (shader
->stage
== MESA_SHADER_TESS_CTRL
&&
386 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
387 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
388 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
393 var
->data
.mode
= nir_var_uniform
;
396 case ir_var_shader_storage
:
397 var
->data
.mode
= nir_var_shader_storage
;
400 case ir_var_system_value
:
401 var
->data
.mode
= nir_var_system_value
;
405 unreachable("not reached");
408 var
->data
.interpolation
= ir
->data
.interpolation
;
409 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
410 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
411 var
->data
.location_frac
= ir
->data
.location_frac
;
413 switch (ir
->data
.depth_layout
) {
414 case ir_depth_layout_none
:
415 var
->data
.depth_layout
= nir_depth_layout_none
;
417 case ir_depth_layout_any
:
418 var
->data
.depth_layout
= nir_depth_layout_any
;
420 case ir_depth_layout_greater
:
421 var
->data
.depth_layout
= nir_depth_layout_greater
;
423 case ir_depth_layout_less
:
424 var
->data
.depth_layout
= nir_depth_layout_less
;
426 case ir_depth_layout_unchanged
:
427 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
430 unreachable("not reached");
433 var
->data
.index
= ir
->data
.index
;
434 var
->data
.descriptor_set
= 0;
435 var
->data
.binding
= ir
->data
.binding
;
436 var
->data
.offset
= ir
->data
.offset
;
437 var
->data
.image
.read_only
= ir
->data
.memory_read_only
;
438 var
->data
.image
.write_only
= ir
->data
.memory_write_only
;
439 var
->data
.image
.coherent
= ir
->data
.memory_coherent
;
440 var
->data
.image
._volatile
= ir
->data
.memory_volatile
;
441 var
->data
.image
.restrict_flag
= ir
->data
.memory_restrict
;
442 var
->data
.image
.format
= ir
->data
.image_format
;
443 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
445 var
->num_state_slots
= ir
->get_num_state_slots();
446 if (var
->num_state_slots
> 0) {
447 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
448 var
->num_state_slots
);
450 ir_state_slot
*state_slots
= ir
->get_state_slots();
451 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
452 for (unsigned j
= 0; j
< 5; j
++)
453 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
454 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
457 var
->state_slots
= NULL
;
460 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
462 var
->interface_type
= ir
->get_interface_type();
464 if (var
->data
.mode
== nir_var_local
)
465 nir_function_impl_add_variable(impl
, var
);
467 nir_shader_add_variable(shader
, var
);
469 _mesa_hash_table_insert(var_table
, ir
, var
);
474 nir_function_visitor::visit_enter(ir_function
*ir
)
476 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
477 visitor
->create_function(sig
);
479 return visit_continue_with_parent
;
483 nir_visitor::create_function(ir_function_signature
*ir
)
485 if (ir
->is_intrinsic())
488 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
490 assert(ir
->parameters
.is_empty());
491 assert(ir
->return_type
== glsl_type::void_type
);
493 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
497 nir_visitor::visit(ir_function
*ir
)
499 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
504 nir_visitor::visit(ir_function_signature
*ir
)
506 if (ir
->is_intrinsic())
509 struct hash_entry
*entry
=
510 _mesa_hash_table_search(this->overload_table
, ir
);
513 nir_function
*func
= (nir_function
*) entry
->data
;
515 if (ir
->is_defined
) {
516 nir_function_impl
*impl
= nir_function_impl_create(func
);
519 assert(strcmp(func
->name
, "main") == 0);
520 assert(ir
->parameters
.is_empty());
521 assert(func
->return_type
== glsl_type::void_type
);
523 this->is_global
= false;
525 nir_builder_init(&b
, impl
);
526 b
.cursor
= nir_after_cf_list(&impl
->body
);
527 visit_exec_list(&ir
->body
, this);
529 this->is_global
= true;
536 nir_visitor::visit(ir_loop
*ir
)
539 visit_exec_list(&ir
->body_instructions
, this);
540 nir_pop_loop(&b
, NULL
);
544 nir_visitor::visit(ir_if
*ir
)
546 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
547 visit_exec_list(&ir
->then_instructions
, this);
548 nir_push_else(&b
, NULL
);
549 visit_exec_list(&ir
->else_instructions
, this);
550 nir_pop_if(&b
, NULL
);
554 nir_visitor::visit(ir_discard
*ir
)
557 * discards aren't treated as control flow, because before we lower them
558 * they can appear anywhere in the shader and the stuff after them may still
559 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
560 * discards will be immediately followed by a return.
563 nir_intrinsic_instr
*discard
;
565 discard
= nir_intrinsic_instr_create(this->shader
,
566 nir_intrinsic_discard_if
);
568 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
570 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
573 nir_builder_instr_insert(&b
, &discard
->instr
);
577 nir_visitor::visit(ir_emit_vertex
*ir
)
579 nir_intrinsic_instr
*instr
=
580 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
581 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
582 nir_builder_instr_insert(&b
, &instr
->instr
);
586 nir_visitor::visit(ir_end_primitive
*ir
)
588 nir_intrinsic_instr
*instr
=
589 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
590 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
591 nir_builder_instr_insert(&b
, &instr
->instr
);
595 nir_visitor::visit(ir_loop_jump
*ir
)
599 case ir_loop_jump::jump_break
:
600 type
= nir_jump_break
;
602 case ir_loop_jump::jump_continue
:
603 type
= nir_jump_continue
;
606 unreachable("not reached");
609 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
610 nir_builder_instr_insert(&b
, &instr
->instr
);
614 nir_visitor::visit(ir_return
*ir
)
616 if (ir
->value
!= NULL
) {
617 nir_intrinsic_instr
*copy
=
618 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
620 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
621 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
624 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
625 nir_builder_instr_insert(&b
, &instr
->instr
);
629 nir_visitor::visit(ir_call
*ir
)
631 if (ir
->callee
->is_intrinsic()) {
634 switch (ir
->callee
->intrinsic_id
) {
635 case ir_intrinsic_atomic_counter_read
:
636 op
= nir_intrinsic_atomic_counter_read_var
;
638 case ir_intrinsic_atomic_counter_increment
:
639 op
= nir_intrinsic_atomic_counter_inc_var
;
641 case ir_intrinsic_atomic_counter_predecrement
:
642 op
= nir_intrinsic_atomic_counter_dec_var
;
644 case ir_intrinsic_atomic_counter_add
:
645 op
= nir_intrinsic_atomic_counter_add_var
;
647 case ir_intrinsic_atomic_counter_and
:
648 op
= nir_intrinsic_atomic_counter_and_var
;
650 case ir_intrinsic_atomic_counter_or
:
651 op
= nir_intrinsic_atomic_counter_or_var
;
653 case ir_intrinsic_atomic_counter_xor
:
654 op
= nir_intrinsic_atomic_counter_xor_var
;
656 case ir_intrinsic_atomic_counter_min
:
657 op
= nir_intrinsic_atomic_counter_min_var
;
659 case ir_intrinsic_atomic_counter_max
:
660 op
= nir_intrinsic_atomic_counter_max_var
;
662 case ir_intrinsic_atomic_counter_exchange
:
663 op
= nir_intrinsic_atomic_counter_exchange_var
;
665 case ir_intrinsic_atomic_counter_comp_swap
:
666 op
= nir_intrinsic_atomic_counter_comp_swap_var
;
668 case ir_intrinsic_image_load
:
669 op
= nir_intrinsic_image_load
;
671 case ir_intrinsic_image_store
:
672 op
= nir_intrinsic_image_store
;
674 case ir_intrinsic_image_atomic_add
:
675 op
= nir_intrinsic_image_atomic_add
;
677 case ir_intrinsic_image_atomic_min
:
678 op
= nir_intrinsic_image_atomic_min
;
680 case ir_intrinsic_image_atomic_max
:
681 op
= nir_intrinsic_image_atomic_max
;
683 case ir_intrinsic_image_atomic_and
:
684 op
= nir_intrinsic_image_atomic_and
;
686 case ir_intrinsic_image_atomic_or
:
687 op
= nir_intrinsic_image_atomic_or
;
689 case ir_intrinsic_image_atomic_xor
:
690 op
= nir_intrinsic_image_atomic_xor
;
692 case ir_intrinsic_image_atomic_exchange
:
693 op
= nir_intrinsic_image_atomic_exchange
;
695 case ir_intrinsic_image_atomic_comp_swap
:
696 op
= nir_intrinsic_image_atomic_comp_swap
;
698 case ir_intrinsic_memory_barrier
:
699 op
= nir_intrinsic_memory_barrier
;
701 case ir_intrinsic_image_size
:
702 op
= nir_intrinsic_image_size
;
704 case ir_intrinsic_image_samples
:
705 op
= nir_intrinsic_image_samples
;
707 case ir_intrinsic_ssbo_store
:
708 op
= nir_intrinsic_store_ssbo
;
710 case ir_intrinsic_ssbo_load
:
711 op
= nir_intrinsic_load_ssbo
;
713 case ir_intrinsic_ssbo_atomic_add
:
714 op
= nir_intrinsic_ssbo_atomic_add
;
716 case ir_intrinsic_ssbo_atomic_and
:
717 op
= nir_intrinsic_ssbo_atomic_and
;
719 case ir_intrinsic_ssbo_atomic_or
:
720 op
= nir_intrinsic_ssbo_atomic_or
;
722 case ir_intrinsic_ssbo_atomic_xor
:
723 op
= nir_intrinsic_ssbo_atomic_xor
;
725 case ir_intrinsic_ssbo_atomic_min
:
726 assert(ir
->return_deref
);
727 if (ir
->return_deref
->type
== glsl_type::int_type
)
728 op
= nir_intrinsic_ssbo_atomic_imin
;
729 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
730 op
= nir_intrinsic_ssbo_atomic_umin
;
732 unreachable("Invalid type");
734 case ir_intrinsic_ssbo_atomic_max
:
735 assert(ir
->return_deref
);
736 if (ir
->return_deref
->type
== glsl_type::int_type
)
737 op
= nir_intrinsic_ssbo_atomic_imax
;
738 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
739 op
= nir_intrinsic_ssbo_atomic_umax
;
741 unreachable("Invalid type");
743 case ir_intrinsic_ssbo_atomic_exchange
:
744 op
= nir_intrinsic_ssbo_atomic_exchange
;
746 case ir_intrinsic_ssbo_atomic_comp_swap
:
747 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
749 case ir_intrinsic_shader_clock
:
750 op
= nir_intrinsic_shader_clock
;
752 case ir_intrinsic_group_memory_barrier
:
753 op
= nir_intrinsic_group_memory_barrier
;
755 case ir_intrinsic_memory_barrier_atomic_counter
:
756 op
= nir_intrinsic_memory_barrier_atomic_counter
;
758 case ir_intrinsic_memory_barrier_buffer
:
759 op
= nir_intrinsic_memory_barrier_buffer
;
761 case ir_intrinsic_memory_barrier_image
:
762 op
= nir_intrinsic_memory_barrier_image
;
764 case ir_intrinsic_memory_barrier_shared
:
765 op
= nir_intrinsic_memory_barrier_shared
;
767 case ir_intrinsic_shared_load
:
768 op
= nir_intrinsic_load_shared
;
770 case ir_intrinsic_shared_store
:
771 op
= nir_intrinsic_store_shared
;
773 case ir_intrinsic_shared_atomic_add
:
774 op
= nir_intrinsic_shared_atomic_add
;
776 case ir_intrinsic_shared_atomic_and
:
777 op
= nir_intrinsic_shared_atomic_and
;
779 case ir_intrinsic_shared_atomic_or
:
780 op
= nir_intrinsic_shared_atomic_or
;
782 case ir_intrinsic_shared_atomic_xor
:
783 op
= nir_intrinsic_shared_atomic_xor
;
785 case ir_intrinsic_shared_atomic_min
:
786 assert(ir
->return_deref
);
787 if (ir
->return_deref
->type
== glsl_type::int_type
)
788 op
= nir_intrinsic_shared_atomic_imin
;
789 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
790 op
= nir_intrinsic_shared_atomic_umin
;
792 unreachable("Invalid type");
794 case ir_intrinsic_shared_atomic_max
:
795 assert(ir
->return_deref
);
796 if (ir
->return_deref
->type
== glsl_type::int_type
)
797 op
= nir_intrinsic_shared_atomic_imax
;
798 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
799 op
= nir_intrinsic_shared_atomic_umax
;
801 unreachable("Invalid type");
803 case ir_intrinsic_shared_atomic_exchange
:
804 op
= nir_intrinsic_shared_atomic_exchange
;
806 case ir_intrinsic_shared_atomic_comp_swap
:
807 op
= nir_intrinsic_shared_atomic_comp_swap
;
809 case ir_intrinsic_vote_any
:
810 op
= nir_intrinsic_vote_any
;
812 case ir_intrinsic_vote_all
:
813 op
= nir_intrinsic_vote_all
;
815 case ir_intrinsic_vote_eq
:
816 op
= nir_intrinsic_vote_eq
;
818 case ir_intrinsic_ballot
:
819 op
= nir_intrinsic_ballot
;
821 case ir_intrinsic_read_invocation
:
822 op
= nir_intrinsic_read_invocation
;
824 case ir_intrinsic_read_first_invocation
:
825 op
= nir_intrinsic_read_first_invocation
;
828 unreachable("not reached");
831 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
832 nir_dest
*dest
= &instr
->dest
;
835 case nir_intrinsic_atomic_counter_read_var
:
836 case nir_intrinsic_atomic_counter_inc_var
:
837 case nir_intrinsic_atomic_counter_dec_var
:
838 case nir_intrinsic_atomic_counter_add_var
:
839 case nir_intrinsic_atomic_counter_min_var
:
840 case nir_intrinsic_atomic_counter_max_var
:
841 case nir_intrinsic_atomic_counter_and_var
:
842 case nir_intrinsic_atomic_counter_or_var
:
843 case nir_intrinsic_atomic_counter_xor_var
:
844 case nir_intrinsic_atomic_counter_exchange_var
:
845 case nir_intrinsic_atomic_counter_comp_swap_var
: {
846 /* Set the counter variable dereference. */
847 exec_node
*param
= ir
->actual_parameters
.get_head();
848 ir_dereference
*counter
= (ir_dereference
*)param
;
850 instr
->variables
[0] = evaluate_deref(&instr
->instr
, counter
);
851 param
= param
->get_next();
853 /* Set the intrinsic destination. */
854 if (ir
->return_deref
) {
855 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
858 /* Set the intrinsic parameters. */
859 if (!param
->is_tail_sentinel()) {
861 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
862 param
= param
->get_next();
865 if (!param
->is_tail_sentinel()) {
867 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
868 param
= param
->get_next();
871 nir_builder_instr_insert(&b
, &instr
->instr
);
874 case nir_intrinsic_image_load
:
875 case nir_intrinsic_image_store
:
876 case nir_intrinsic_image_atomic_add
:
877 case nir_intrinsic_image_atomic_min
:
878 case nir_intrinsic_image_atomic_max
:
879 case nir_intrinsic_image_atomic_and
:
880 case nir_intrinsic_image_atomic_or
:
881 case nir_intrinsic_image_atomic_xor
:
882 case nir_intrinsic_image_atomic_exchange
:
883 case nir_intrinsic_image_atomic_comp_swap
:
884 case nir_intrinsic_image_samples
:
885 case nir_intrinsic_image_size
: {
886 nir_ssa_undef_instr
*instr_undef
=
887 nir_ssa_undef_instr_create(shader
, 1, 32);
888 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
890 /* Set the image variable dereference. */
891 exec_node
*param
= ir
->actual_parameters
.get_head();
892 ir_dereference
*image
= (ir_dereference
*)param
;
893 const glsl_type
*type
=
894 image
->variable_referenced()->type
->without_array();
896 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
897 param
= param
->get_next();
899 /* Set the intrinsic destination. */
900 if (ir
->return_deref
) {
901 unsigned num_components
= ir
->return_deref
->type
->vector_elements
;
902 if (instr
->intrinsic
== nir_intrinsic_image_size
)
903 instr
->num_components
= num_components
;
904 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
905 num_components
, 32, NULL
);
908 if (op
== nir_intrinsic_image_size
||
909 op
== nir_intrinsic_image_samples
) {
910 nir_builder_instr_insert(&b
, &instr
->instr
);
914 /* Set the address argument, extending the coordinate vector to four
917 nir_ssa_def
*src_addr
=
918 evaluate_rvalue((ir_dereference
*)param
);
919 nir_ssa_def
*srcs
[4];
921 for (int i
= 0; i
< 4; i
++) {
922 if (i
< type
->coordinate_components())
923 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
925 srcs
[i
] = &instr_undef
->def
;
928 instr
->src
[0] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
929 param
= param
->get_next();
931 /* Set the sample argument, which is undefined for single-sample
934 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
936 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
937 param
= param
->get_next();
939 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
942 /* Set the intrinsic parameters. */
943 if (!param
->is_tail_sentinel()) {
945 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
946 param
= param
->get_next();
949 if (!param
->is_tail_sentinel()) {
951 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
952 param
= param
->get_next();
954 nir_builder_instr_insert(&b
, &instr
->instr
);
957 case nir_intrinsic_memory_barrier
:
958 case nir_intrinsic_group_memory_barrier
:
959 case nir_intrinsic_memory_barrier_atomic_counter
:
960 case nir_intrinsic_memory_barrier_buffer
:
961 case nir_intrinsic_memory_barrier_image
:
962 case nir_intrinsic_memory_barrier_shared
:
963 nir_builder_instr_insert(&b
, &instr
->instr
);
965 case nir_intrinsic_shader_clock
:
966 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 2, 32, NULL
);
967 instr
->num_components
= 2;
968 nir_builder_instr_insert(&b
, &instr
->instr
);
970 case nir_intrinsic_store_ssbo
: {
971 exec_node
*param
= ir
->actual_parameters
.get_head();
972 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
974 param
= param
->get_next();
975 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
977 param
= param
->get_next();
978 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
980 param
= param
->get_next();
981 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
984 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
985 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
986 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
987 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
988 instr
->num_components
= val
->type
->vector_elements
;
990 nir_builder_instr_insert(&b
, &instr
->instr
);
993 case nir_intrinsic_load_ssbo
: {
994 exec_node
*param
= ir
->actual_parameters
.get_head();
995 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
997 param
= param
->get_next();
998 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1000 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
1001 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1003 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1004 instr
->num_components
= type
->vector_elements
;
1006 /* Setup destination register */
1007 unsigned bit_size
= glsl_get_bit_size(type
);
1008 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1009 type
->vector_elements
, bit_size
, NULL
);
1011 /* Insert the created nir instruction now since in the case of boolean
1012 * result we will need to emit another instruction after it
1014 nir_builder_instr_insert(&b
, &instr
->instr
);
1017 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
1018 * consider a true boolean to be ~0. Fix this up with a != 0
1021 if (type
->is_boolean()) {
1022 nir_alu_instr
*load_ssbo_compare
=
1023 nir_alu_instr_create(shader
, nir_op_ine
);
1024 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
1025 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
1026 load_ssbo_compare
->src
[1].src
=
1027 nir_src_for_ssa(nir_imm_int(&b
, 0));
1028 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
1029 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
1030 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
1031 &load_ssbo_compare
->dest
.dest
,
1032 type
->vector_elements
, bit_size
, NULL
);
1033 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
1034 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
1035 dest
= &load_ssbo_compare
->dest
.dest
;
1039 case nir_intrinsic_ssbo_atomic_add
:
1040 case nir_intrinsic_ssbo_atomic_imin
:
1041 case nir_intrinsic_ssbo_atomic_umin
:
1042 case nir_intrinsic_ssbo_atomic_imax
:
1043 case nir_intrinsic_ssbo_atomic_umax
:
1044 case nir_intrinsic_ssbo_atomic_and
:
1045 case nir_intrinsic_ssbo_atomic_or
:
1046 case nir_intrinsic_ssbo_atomic_xor
:
1047 case nir_intrinsic_ssbo_atomic_exchange
:
1048 case nir_intrinsic_ssbo_atomic_comp_swap
: {
1049 int param_count
= ir
->actual_parameters
.length();
1050 assert(param_count
== 3 || param_count
== 4);
1053 exec_node
*param
= ir
->actual_parameters
.get_head();
1054 ir_instruction
*inst
= (ir_instruction
*) param
;
1055 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1058 param
= param
->get_next();
1059 inst
= (ir_instruction
*) param
;
1060 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1062 /* data1 parameter (this is always present) */
1063 param
= param
->get_next();
1064 inst
= (ir_instruction
*) param
;
1065 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1067 /* data2 parameter (only with atomic_comp_swap) */
1068 if (param_count
== 4) {
1069 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
1070 param
= param
->get_next();
1071 inst
= (ir_instruction
*) param
;
1072 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1076 assert(ir
->return_deref
);
1077 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1078 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1079 nir_builder_instr_insert(&b
, &instr
->instr
);
1082 case nir_intrinsic_load_shared
: {
1083 exec_node
*param
= ir
->actual_parameters
.get_head();
1084 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1086 nir_intrinsic_set_base(instr
, 0);
1087 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1089 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1090 instr
->num_components
= type
->vector_elements
;
1092 /* Setup destination register */
1093 unsigned bit_size
= glsl_get_bit_size(type
);
1094 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1095 type
->vector_elements
, bit_size
, NULL
);
1097 nir_builder_instr_insert(&b
, &instr
->instr
);
1100 case nir_intrinsic_store_shared
: {
1101 exec_node
*param
= ir
->actual_parameters
.get_head();
1102 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1104 param
= param
->get_next();
1105 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1107 param
= param
->get_next();
1108 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1111 nir_intrinsic_set_base(instr
, 0);
1112 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1114 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1116 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1117 instr
->num_components
= val
->type
->vector_elements
;
1119 nir_builder_instr_insert(&b
, &instr
->instr
);
1122 case nir_intrinsic_shared_atomic_add
:
1123 case nir_intrinsic_shared_atomic_imin
:
1124 case nir_intrinsic_shared_atomic_umin
:
1125 case nir_intrinsic_shared_atomic_imax
:
1126 case nir_intrinsic_shared_atomic_umax
:
1127 case nir_intrinsic_shared_atomic_and
:
1128 case nir_intrinsic_shared_atomic_or
:
1129 case nir_intrinsic_shared_atomic_xor
:
1130 case nir_intrinsic_shared_atomic_exchange
:
1131 case nir_intrinsic_shared_atomic_comp_swap
: {
1132 int param_count
= ir
->actual_parameters
.length();
1133 assert(param_count
== 2 || param_count
== 3);
1136 exec_node
*param
= ir
->actual_parameters
.get_head();
1137 ir_instruction
*inst
= (ir_instruction
*) param
;
1138 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1140 /* data1 parameter (this is always present) */
1141 param
= param
->get_next();
1142 inst
= (ir_instruction
*) param
;
1143 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1145 /* data2 parameter (only with atomic_comp_swap) */
1146 if (param_count
== 3) {
1147 assert(op
== nir_intrinsic_shared_atomic_comp_swap
);
1148 param
= param
->get_next();
1149 inst
= (ir_instruction
*) param
;
1151 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1155 assert(ir
->return_deref
);
1156 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1157 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1158 ir
->return_deref
->type
->vector_elements
,
1160 nir_builder_instr_insert(&b
, &instr
->instr
);
1163 case nir_intrinsic_vote_any
:
1164 case nir_intrinsic_vote_all
:
1165 case nir_intrinsic_vote_eq
: {
1166 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
1168 instr
->variables
[0] = evaluate_deref(&instr
->instr
, ir
->return_deref
);
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
);
1181 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1182 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1184 nir_builder_instr_insert(&b
, &instr
->instr
);
1187 case nir_intrinsic_read_invocation
: {
1188 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1189 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1190 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1192 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1193 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1195 ir_rvalue
*invocation
= (ir_rvalue
*) ir
->actual_parameters
.get_head()->next
;
1196 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(invocation
));
1198 nir_builder_instr_insert(&b
, &instr
->instr
);
1201 case nir_intrinsic_read_first_invocation
: {
1202 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1203 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1204 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1206 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1207 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1209 nir_builder_instr_insert(&b
, &instr
->instr
);
1213 unreachable("not reached");
1216 if (ir
->return_deref
) {
1217 nir_intrinsic_instr
*store_instr
=
1218 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
1219 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1220 nir_intrinsic_set_write_mask(store_instr
,
1221 (1 << store_instr
->num_components
) - 1);
1223 store_instr
->variables
[0] =
1224 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
1225 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
1227 nir_builder_instr_insert(&b
, &store_instr
->instr
);
1233 struct hash_entry
*entry
=
1234 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1236 nir_function
*callee
= (nir_function
*) entry
->data
;
1238 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
1241 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
1242 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
1246 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
1247 nir_builder_instr_insert(&b
, &instr
->instr
);
1251 nir_visitor::visit(ir_assignment
*ir
)
1253 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1255 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1256 ir
->lhs
->variable_referenced()->data
.precise
;
1258 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1259 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1260 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1261 nir_intrinsic_instr
*copy
=
1262 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1264 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1265 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1267 if (ir
->condition
) {
1268 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1269 nir_builder_instr_insert(&b
, ©
->instr
);
1270 nir_pop_if(&b
, NULL
);
1272 nir_builder_instr_insert(&b
, ©
->instr
);
1277 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1279 ir
->lhs
->accept(this);
1280 nir_deref_var
*lhs_deref
= this->deref_head
;
1281 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1283 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1284 /* GLSL IR will give us the input to the write-masked assignment in a
1285 * single packed vector. So, for example, if the writemask is xzw, then
1286 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1290 unsigned component
= 0;
1291 for (unsigned i
= 0; i
< 4; i
++) {
1292 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1294 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1297 nir_intrinsic_instr
*store
=
1298 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1299 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1300 nir_intrinsic_set_write_mask(store
, ir
->write_mask
);
1301 store
->variables
[0] = nir_deref_var_clone(lhs_deref
, store
);
1302 store
->src
[0] = nir_src_for_ssa(src
);
1304 if (ir
->condition
) {
1305 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1306 nir_builder_instr_insert(&b
, &store
->instr
);
1307 nir_pop_if(&b
, NULL
);
1309 nir_builder_instr_insert(&b
, &store
->instr
);
1314 * Given an instruction, returns a pointer to its destination or NULL if there
1315 * is no destination.
1317 * Note that this only handles instructions we generate at this level.
1320 get_instr_dest(nir_instr
*instr
)
1322 nir_alu_instr
*alu_instr
;
1323 nir_intrinsic_instr
*intrinsic_instr
;
1324 nir_tex_instr
*tex_instr
;
1326 switch (instr
->type
) {
1327 case nir_instr_type_alu
:
1328 alu_instr
= nir_instr_as_alu(instr
);
1329 return &alu_instr
->dest
.dest
;
1331 case nir_instr_type_intrinsic
:
1332 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1333 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1334 return &intrinsic_instr
->dest
;
1338 case nir_instr_type_tex
:
1339 tex_instr
= nir_instr_as_tex(instr
);
1340 return &tex_instr
->dest
;
1343 unreachable("not reached");
1350 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1353 nir_dest
*dest
= get_instr_dest(instr
);
1356 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1358 nir_builder_instr_insert(&b
, instr
);
1361 assert(dest
->is_ssa
);
1362 this->result
= &dest
->ssa
;
1367 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1370 if (ir
->as_dereference() || ir
->as_constant()) {
1372 * A dereference is being used on the right hand side, which means we
1373 * must emit a variable load.
1376 nir_intrinsic_instr
*load_instr
=
1377 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1378 load_instr
->num_components
= ir
->type
->vector_elements
;
1379 load_instr
->variables
[0] = this->deref_head
;
1380 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1381 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1382 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
, bit_size
);
1385 return this->result
;
1389 type_is_float(glsl_base_type type
)
1391 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
;
1395 type_is_signed(glsl_base_type type
)
1397 return type
== GLSL_TYPE_INT
|| type
== GLSL_TYPE_INT64
;
1401 nir_visitor::visit(ir_expression
*ir
)
1403 /* Some special cases */
1404 switch (ir
->operation
) {
1405 case ir_binop_ubo_load
: {
1406 nir_intrinsic_instr
*load
=
1407 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1408 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1409 load
->num_components
= ir
->type
->vector_elements
;
1410 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1411 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1412 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1415 * In UBO's, a true boolean value is any non-zero value, but we consider
1416 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1419 if (ir
->type
->is_boolean())
1420 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1425 case ir_unop_interpolate_at_centroid
:
1426 case ir_binop_interpolate_at_offset
:
1427 case ir_binop_interpolate_at_sample
: {
1428 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1429 ir_swizzle
*swizzle
= NULL
;
1431 /* the api does not allow a swizzle here, but the varying packing code
1432 * may have pushed one into here.
1434 swizzle
= ir
->operands
[0]->as_swizzle();
1436 deref
= swizzle
->val
->as_dereference();
1440 deref
->accept(this);
1442 nir_intrinsic_op op
;
1443 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1444 switch (ir
->operation
) {
1445 case ir_unop_interpolate_at_centroid
:
1446 op
= nir_intrinsic_interp_var_at_centroid
;
1448 case ir_binop_interpolate_at_offset
:
1449 op
= nir_intrinsic_interp_var_at_offset
;
1451 case ir_binop_interpolate_at_sample
:
1452 op
= nir_intrinsic_interp_var_at_sample
;
1455 unreachable("Invalid interpolation intrinsic");
1458 /* This case can happen if the vertex shader does not write the
1459 * given varying. In this case, the linker will lower it to a
1460 * global variable. Since interpolating a variable makes no
1461 * sense, we'll just turn it into a load which will probably
1462 * eventually end up as an SSA definition.
1464 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1465 op
= nir_intrinsic_load_var
;
1468 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1469 intrin
->num_components
= deref
->type
->vector_elements
;
1470 intrin
->variables
[0] = this->deref_head
;
1471 ralloc_steal(intrin
, intrin
->variables
[0]);
1473 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1474 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1475 intrin
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1477 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1478 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1481 unsigned swiz
[4] = {
1482 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1485 result
= nir_swizzle(&b
, result
, swiz
,
1486 swizzle
->type
->vector_elements
, false);
1496 nir_ssa_def
*srcs
[4];
1497 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1498 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1500 glsl_base_type types
[4];
1501 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1503 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1505 types
[i
] = GLSL_TYPE_FLOAT
;
1507 glsl_base_type out_type
;
1509 out_type
= ir
->type
->base_type
;
1511 out_type
= GLSL_TYPE_FLOAT
;
1513 switch (ir
->operation
) {
1514 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1515 case ir_unop_logic_not
:
1516 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1519 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1520 : nir_ineg(&b
, srcs
[0]);
1523 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1524 : nir_iabs(&b
, srcs
[0]);
1526 case ir_unop_saturate
:
1527 assert(type_is_float(types
[0]));
1528 result
= nir_fsat(&b
, srcs
[0]);
1531 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1532 : nir_isign(&b
, srcs
[0]);
1534 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1535 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1536 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1537 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1538 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1539 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1540 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1542 result
= supports_ints
? nir_i2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1545 result
= supports_ints
? nir_u2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1548 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1582 case ir_unop_i642u64
:
1583 case ir_unop_u642i64
: {
1584 nir_alu_type src_type
= nir_get_nir_type_for_glsl_base_type(types
[0]);
1585 nir_alu_type dst_type
= nir_get_nir_type_for_glsl_base_type(out_type
);
1586 result
= nir_build_alu(&b
, nir_type_conversion_op(src_type
, dst_type
),
1587 srcs
[0], NULL
, NULL
, NULL
);
1588 /* b2i and b2f don't have fixed bit-size versions so the builder will
1589 * just assume 32 and we have to fix it up here.
1591 result
->bit_size
= nir_alu_type_get_type_size(dst_type
);
1595 case ir_unop_bitcast_i2f
:
1596 case ir_unop_bitcast_f2i
:
1597 case ir_unop_bitcast_u2f
:
1598 case ir_unop_bitcast_f2u
:
1599 case ir_unop_bitcast_i642d
:
1600 case ir_unop_bitcast_d2i64
:
1601 case ir_unop_bitcast_u642d
:
1602 case ir_unop_bitcast_d2u64
:
1603 case ir_unop_subroutine_to_int
:
1605 result
= nir_imov(&b
, srcs
[0]);
1607 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1608 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1609 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1610 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1611 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1612 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1613 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1614 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1615 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1616 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1617 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1618 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1619 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1620 case ir_unop_pack_snorm_2x16
:
1621 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1623 case ir_unop_pack_snorm_4x8
:
1624 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1626 case ir_unop_pack_unorm_2x16
:
1627 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1629 case ir_unop_pack_unorm_4x8
:
1630 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1632 case ir_unop_pack_half_2x16
:
1633 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1635 case ir_unop_unpack_snorm_2x16
:
1636 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1638 case ir_unop_unpack_snorm_4x8
:
1639 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1641 case ir_unop_unpack_unorm_2x16
:
1642 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1644 case ir_unop_unpack_unorm_4x8
:
1645 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1647 case ir_unop_unpack_half_2x16
:
1648 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1650 case ir_unop_pack_double_2x32
:
1651 case ir_unop_pack_int_2x32
:
1652 case ir_unop_pack_uint_2x32
:
1653 result
= nir_pack_64_2x32(&b
, srcs
[0]);
1655 case ir_unop_unpack_double_2x32
:
1656 case ir_unop_unpack_int_2x32
:
1657 case ir_unop_unpack_uint_2x32
:
1658 result
= nir_unpack_64_2x32(&b
, srcs
[0]);
1660 case ir_unop_bitfield_reverse
:
1661 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1663 case ir_unop_bit_count
:
1664 result
= nir_bit_count(&b
, srcs
[0]);
1666 case ir_unop_find_msb
:
1668 case GLSL_TYPE_UINT
:
1669 result
= nir_ufind_msb(&b
, srcs
[0]);
1672 result
= nir_ifind_msb(&b
, srcs
[0]);
1675 unreachable("Invalid type for findMSB()");
1678 case ir_unop_find_lsb
:
1679 result
= nir_find_lsb(&b
, srcs
[0]);
1683 switch (ir
->type
->vector_elements
) {
1685 switch (ir
->operands
[0]->type
->vector_elements
) {
1686 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1687 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1688 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1689 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1690 default: unreachable("not reached");
1694 switch (ir
->operands
[0]->type
->vector_elements
) {
1695 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1696 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1697 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1698 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1699 default: unreachable("not reached");
1703 switch (ir
->operands
[0]->type
->vector_elements
) {
1704 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1705 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1706 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1707 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1708 default: unreachable("not reached");
1712 switch (ir
->operands
[0]->type
->vector_elements
) {
1713 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1714 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1715 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1716 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1717 default: unreachable("not reached");
1721 unreachable("not reached");
1724 case ir_unop_get_buffer_size
: {
1725 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1727 nir_intrinsic_get_buffer_size
);
1728 load
->num_components
= ir
->type
->vector_elements
;
1729 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1730 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1731 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1736 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1737 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1740 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1741 : nir_isub(&b
, srcs
[0], srcs
[1]);
1744 result
= type_is_float(out_type
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1745 : nir_imul(&b
, srcs
[0], srcs
[1]);
1748 if (type_is_float(out_type
))
1749 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1750 else if (type_is_signed(out_type
))
1751 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1753 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1756 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1757 : nir_umod(&b
, srcs
[0], srcs
[1]);
1760 if (type_is_float(out_type
))
1761 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1762 else if (type_is_signed(out_type
))
1763 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1765 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1768 if (type_is_float(out_type
))
1769 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1770 else if (type_is_signed(out_type
))
1771 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1773 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1775 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1776 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1777 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1778 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1779 case ir_binop_logic_and
:
1780 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1781 : nir_fand(&b
, srcs
[0], srcs
[1]);
1783 case ir_binop_logic_or
:
1784 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1785 : nir_for(&b
, srcs
[0], srcs
[1]);
1787 case ir_binop_logic_xor
:
1788 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1789 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1791 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1792 case ir_binop_rshift
:
1793 result
= (type_is_signed(out_type
)) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1794 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1796 case ir_binop_imul_high
:
1797 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1798 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1800 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1801 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1803 if (supports_ints
) {
1804 if (type_is_float(types
[0]))
1805 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1806 else if (type_is_signed(types
[0]))
1807 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1809 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1811 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1814 case ir_binop_greater
:
1815 if (supports_ints
) {
1816 if (type_is_float(types
[0]))
1817 result
= nir_flt(&b
, srcs
[1], srcs
[0]);
1818 else if (type_is_signed(types
[0]))
1819 result
= nir_ilt(&b
, srcs
[1], srcs
[0]);
1821 result
= nir_ult(&b
, srcs
[1], srcs
[0]);
1823 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1826 case ir_binop_lequal
:
1827 if (supports_ints
) {
1828 if (type_is_float(types
[0]))
1829 result
= nir_fge(&b
, srcs
[1], srcs
[0]);
1830 else if (type_is_signed(types
[0]))
1831 result
= nir_ige(&b
, srcs
[1], srcs
[0]);
1833 result
= nir_uge(&b
, srcs
[1], srcs
[0]);
1835 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1838 case ir_binop_gequal
:
1839 if (supports_ints
) {
1840 if (type_is_float(types
[0]))
1841 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1842 else if (type_is_signed(types
[0]))
1843 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1845 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1847 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1850 case ir_binop_equal
:
1851 if (supports_ints
) {
1852 if (type_is_float(types
[0]))
1853 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1855 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1857 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1860 case ir_binop_nequal
:
1861 if (supports_ints
) {
1862 if (type_is_float(types
[0]))
1863 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1865 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1867 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1870 case ir_binop_all_equal
:
1871 if (supports_ints
) {
1872 if (type_is_float(types
[0])) {
1873 switch (ir
->operands
[0]->type
->vector_elements
) {
1874 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1875 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1876 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1877 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1879 unreachable("not reached");
1882 switch (ir
->operands
[0]->type
->vector_elements
) {
1883 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1884 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1885 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1886 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1888 unreachable("not reached");
1892 switch (ir
->operands
[0]->type
->vector_elements
) {
1893 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1894 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1895 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1896 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1898 unreachable("not reached");
1902 case ir_binop_any_nequal
:
1903 if (supports_ints
) {
1904 if (type_is_float(types
[0])) {
1905 switch (ir
->operands
[0]->type
->vector_elements
) {
1906 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1907 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1908 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1909 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1911 unreachable("not reached");
1914 switch (ir
->operands
[0]->type
->vector_elements
) {
1915 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1916 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1917 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1918 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1920 unreachable("not reached");
1924 switch (ir
->operands
[0]->type
->vector_elements
) {
1925 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1926 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1927 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1928 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1930 unreachable("not reached");
1935 switch (ir
->operands
[0]->type
->vector_elements
) {
1936 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1937 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1938 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1940 unreachable("not reached");
1944 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1946 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1949 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1953 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1955 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1957 case ir_triop_bitfield_extract
:
1958 result
= (out_type
== GLSL_TYPE_INT
) ?
1959 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1960 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1962 case ir_quadop_bitfield_insert
:
1963 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1965 case ir_quadop_vector
:
1966 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1970 unreachable("not reached");
1975 nir_visitor::visit(ir_swizzle
*ir
)
1977 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1978 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1979 ir
->type
->vector_elements
, !supports_ints
);
1983 nir_visitor::visit(ir_texture
*ir
)
1990 num_srcs
= 1; /* coordinate */
1995 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1996 num_srcs
= 2; /* coordinate, bias/lod */
2000 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
2006 if (ir
->lod_info
.lod
!= NULL
)
2007 num_srcs
= 2; /* coordinate, lod */
2009 num_srcs
= 1; /* coordinate */
2013 op
= nir_texop_txf_ms
;
2014 num_srcs
= 2; /* coordinate, sample_index */
2019 if (ir
->lod_info
.lod
!= NULL
)
2020 num_srcs
= 1; /* lod */
2027 num_srcs
= 1; /* coordinate */
2032 num_srcs
= 1; /* coordinate */
2035 case ir_query_levels
:
2036 op
= nir_texop_query_levels
;
2040 case ir_texture_samples
:
2041 op
= nir_texop_texture_samples
;
2045 case ir_samples_identical
:
2046 op
= nir_texop_samples_identical
;
2047 num_srcs
= 1; /* coordinate */
2051 unreachable("not reached");
2054 if (ir
->projector
!= NULL
)
2056 if (ir
->shadow_comparator
!= NULL
)
2058 if (ir
->offset
!= NULL
)
2061 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
2064 instr
->sampler_dim
=
2065 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
2066 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
2067 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
2068 if (instr
->is_shadow
)
2069 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
2070 switch (ir
->type
->base_type
) {
2071 case GLSL_TYPE_FLOAT
:
2072 instr
->dest_type
= nir_type_float
;
2075 instr
->dest_type
= nir_type_int
;
2077 case GLSL_TYPE_BOOL
:
2078 case GLSL_TYPE_UINT
:
2079 instr
->dest_type
= nir_type_uint
;
2082 unreachable("not reached");
2085 instr
->texture
= evaluate_deref(&instr
->instr
, ir
->sampler
);
2087 unsigned src_number
= 0;
2089 if (ir
->coordinate
!= NULL
) {
2090 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
2091 instr
->src
[src_number
].src
=
2092 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
2093 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2097 if (ir
->projector
!= NULL
) {
2098 instr
->src
[src_number
].src
=
2099 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
2100 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2104 if (ir
->shadow_comparator
!= NULL
) {
2105 instr
->src
[src_number
].src
=
2106 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparator
));
2107 instr
->src
[src_number
].src_type
= nir_tex_src_comparator
;
2111 if (ir
->offset
!= NULL
) {
2112 /* we don't support multiple offsets yet */
2113 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2115 instr
->src
[src_number
].src
=
2116 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
2117 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2123 instr
->src
[src_number
].src
=
2124 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
2125 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2132 if (ir
->lod_info
.lod
!= NULL
) {
2133 instr
->src
[src_number
].src
=
2134 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
2135 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2141 instr
->src
[src_number
].src
=
2142 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
2143 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2145 instr
->src
[src_number
].src
=
2146 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
2147 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2152 instr
->src
[src_number
].src
=
2153 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
2154 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2159 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2166 assert(src_number
== num_srcs
);
2168 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2169 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2173 nir_visitor::visit(ir_constant
*ir
)
2176 * We don't know if this variable is an array or struct that gets
2177 * dereferenced, so do the safe thing an make it a variable with a
2178 * constant initializer and return a dereference.
2182 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2183 var
->data
.read_only
= true;
2184 var
->constant_initializer
= constant_copy(ir
, var
);
2186 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2187 this->deref_tail
= &this->deref_head
->deref
;
2191 nir_visitor::visit(ir_dereference_variable
*ir
)
2193 struct hash_entry
*entry
=
2194 _mesa_hash_table_search(this->var_table
, ir
->var
);
2196 nir_variable
*var
= (nir_variable
*) entry
->data
;
2198 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2199 this->deref_head
= deref
;
2200 this->deref_tail
= &deref
->deref
;
2204 nir_visitor::visit(ir_dereference_record
*ir
)
2206 ir
->record
->accept(this);
2208 int field_index
= ir
->field_idx
;
2209 assert(field_index
>= 0);
2211 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2212 deref
->deref
.type
= ir
->type
;
2213 this->deref_tail
->child
= &deref
->deref
;
2214 this->deref_tail
= &deref
->deref
;
2218 nir_visitor::visit(ir_dereference_array
*ir
)
2220 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2221 deref
->deref
.type
= ir
->type
;
2223 ir_constant
*const_index
= ir
->array_index
->as_constant();
2224 if (const_index
!= NULL
) {
2225 deref
->deref_array_type
= nir_deref_array_type_direct
;
2226 deref
->base_offset
= const_index
->value
.u
[0];
2228 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2230 nir_src_for_ssa(evaluate_rvalue(ir
->array_index
));
2233 ir
->array
->accept(this);
2235 this->deref_tail
->child
= &deref
->deref
;
2236 ralloc_steal(this->deref_tail
, deref
);
2237 this->deref_tail
= &deref
->deref
;
2241 nir_visitor::visit(ir_barrier
*)
2243 nir_intrinsic_instr
*instr
=
2244 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2245 nir_builder_instr_insert(&b
, &instr
->instr
);