2 * Copyright © 2014 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 * Connor Abbott (cwabbott0@gmail.com)
28 #include "glsl_to_nir.h"
29 #include "ir_visitor.h"
30 #include "ir_hierarchical_visitor.h"
32 #include "compiler/nir/nir_control_flow.h"
33 #include "compiler/nir/nir_builder.h"
34 #include "main/imports.h"
35 #include "main/mtypes.h"
38 * pass to lower GLSL IR to NIR
40 * This will lower variable dereferences to loads/stores of corresponding
41 * variables in NIR - the variables will be converted to registers in a later
47 class nir_visitor
: public ir_visitor
50 nir_visitor(nir_shader
*shader
);
53 virtual void visit(ir_variable
*);
54 virtual void visit(ir_function
*);
55 virtual void visit(ir_function_signature
*);
56 virtual void visit(ir_loop
*);
57 virtual void visit(ir_if
*);
58 virtual void visit(ir_discard
*);
59 virtual void visit(ir_loop_jump
*);
60 virtual void visit(ir_return
*);
61 virtual void visit(ir_call
*);
62 virtual void visit(ir_assignment
*);
63 virtual void visit(ir_emit_vertex
*);
64 virtual void visit(ir_end_primitive
*);
65 virtual void visit(ir_expression
*);
66 virtual void visit(ir_swizzle
*);
67 virtual void visit(ir_texture
*);
68 virtual void visit(ir_constant
*);
69 virtual void visit(ir_dereference_variable
*);
70 virtual void visit(ir_dereference_record
*);
71 virtual void visit(ir_dereference_array
*);
72 virtual void visit(ir_barrier
*);
74 void create_function(ir_function_signature
*ir
);
77 void add_instr(nir_instr
*instr
, unsigned num_components
, unsigned bit_size
);
78 nir_ssa_def
*evaluate_rvalue(ir_rvalue
*ir
);
80 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
**srcs
);
81 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
);
82 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
84 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
85 nir_ssa_def
*src2
, nir_ssa_def
*src3
);
90 nir_function_impl
*impl
;
92 nir_ssa_def
*result
; /* result of the expression tree last visited */
94 nir_deref_instr
*evaluate_deref(ir_instruction
*ir
);
96 /* most recent deref instruction created */
97 nir_deref_instr
*deref
;
99 nir_variable
*var
; /* variable created by ir_variable visitor */
101 /* whether the IR we're operating on is per-function or global */
104 /* map of ir_variable -> nir_variable */
105 struct hash_table
*var_table
;
107 /* map of ir_function_signature -> nir_function_overload */
108 struct hash_table
*overload_table
;
112 * This visitor runs before the main visitor, calling create_function() for
113 * each function so that the main visitor can resolve forward references in
117 class nir_function_visitor
: public ir_hierarchical_visitor
120 nir_function_visitor(nir_visitor
*v
) : visitor(v
)
123 virtual ir_visitor_status
visit_enter(ir_function
*);
126 nir_visitor
*visitor
;
129 } /* end of anonymous namespace */
132 nir_remap_attributes(nir_shader
*shader
,
133 const nir_shader_compiler_options
*options
)
135 if (options
->vs_inputs_dual_locations
) {
136 nir_foreach_variable(var
, &shader
->inputs
) {
137 var
->data
.location
+=
138 _mesa_bitcount_64(shader
->info
.vs
.double_inputs
&
139 BITFIELD64_MASK(var
->data
.location
));
143 /* Once the remap is done, reset double_inputs_read, so later it will have
144 * which location/slots are doubles */
145 shader
->info
.vs
.double_inputs
= 0;
149 glsl_to_nir(const struct gl_shader_program
*shader_prog
,
150 gl_shader_stage stage
,
151 const nir_shader_compiler_options
*options
)
153 struct gl_linked_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
155 nir_shader
*shader
= nir_shader_create(NULL
, stage
, options
,
158 nir_visitor
v1(shader
);
159 nir_function_visitor
v2(&v1
);
161 visit_exec_list(sh
->ir
, &v1
);
163 nir_lower_constant_initializers(shader
, (nir_variable_mode
)~0);
165 /* Remap the locations to slots so those requiring two slots will occupy
166 * two locations. For instance, if we have in the IR code a dvec3 attr0 in
167 * location 0 and vec4 attr1 in location 1, in NIR attr0 will use
168 * locations/slots 0 and 1, and attr1 will use location/slot 2 */
169 if (shader
->info
.stage
== MESA_SHADER_VERTEX
)
170 nir_remap_attributes(shader
, options
);
172 shader
->info
.name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
173 if (shader_prog
->Label
)
174 shader
->info
.label
= ralloc_strdup(shader
, shader_prog
->Label
);
176 /* Check for transform feedback varyings specified via the API */
177 shader
->info
.has_transform_feedback_varyings
=
178 shader_prog
->TransformFeedback
.NumVarying
> 0;
180 /* Check for transform feedback varyings specified in the Shader */
181 if (shader_prog
->last_vert_prog
)
182 shader
->info
.has_transform_feedback_varyings
|=
183 shader_prog
->last_vert_prog
->sh
.LinkedTransformFeedback
->NumVarying
> 0;
188 nir_visitor::nir_visitor(nir_shader
*shader
)
190 this->supports_ints
= shader
->options
->native_integers
;
191 this->shader
= shader
;
192 this->is_global
= true;
193 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
194 _mesa_key_pointer_equal
);
195 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
196 _mesa_key_pointer_equal
);
200 memset(&this->b
, 0, sizeof(this->b
));
203 nir_visitor::~nir_visitor()
205 _mesa_hash_table_destroy(this->var_table
, NULL
);
206 _mesa_hash_table_destroy(this->overload_table
, NULL
);
210 nir_visitor::evaluate_deref(ir_instruction
*ir
)
216 static nir_constant
*
217 constant_copy(ir_constant
*ir
, void *mem_ctx
)
222 nir_constant
*ret
= rzalloc(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
= rzalloc(shader
, nir_variable
);
315 var
->type
= ir
->type
;
316 var
->name
= ralloc_strdup(var
, ir
->name
);
318 var
->data
.always_active_io
= ir
->data
.always_active_io
;
319 var
->data
.read_only
= ir
->data
.read_only
;
320 var
->data
.centroid
= ir
->data
.centroid
;
321 var
->data
.sample
= ir
->data
.sample
;
322 var
->data
.patch
= ir
->data
.patch
;
323 var
->data
.invariant
= ir
->data
.invariant
;
324 var
->data
.location
= ir
->data
.location
;
325 var
->data
.stream
= ir
->data
.stream
;
326 var
->data
.compact
= false;
328 switch(ir
->data
.mode
) {
330 case ir_var_temporary
:
332 var
->data
.mode
= nir_var_global
;
334 var
->data
.mode
= nir_var_local
;
337 case ir_var_function_in
:
338 case ir_var_function_out
:
339 case ir_var_function_inout
:
340 case ir_var_const_in
:
341 var
->data
.mode
= nir_var_local
;
344 case ir_var_shader_in
:
345 if (shader
->info
.stage
== MESA_SHADER_FRAGMENT
&&
346 ir
->data
.location
== VARYING_SLOT_FACE
) {
347 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
348 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
349 var
->data
.mode
= nir_var_system_value
;
350 } else if (shader
->info
.stage
== MESA_SHADER_GEOMETRY
&&
351 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
352 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
353 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
354 var
->data
.mode
= nir_var_system_value
;
356 var
->data
.mode
= nir_var_shader_in
;
358 if (shader
->info
.stage
== MESA_SHADER_TESS_EVAL
&&
359 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
360 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
361 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
365 /* Mark all the locations that require two slots */
366 if (shader
->info
.stage
== MESA_SHADER_VERTEX
&&
367 glsl_type_is_dual_slot(glsl_without_array(var
->type
))) {
368 for (unsigned i
= 0; i
< glsl_count_attribute_slots(var
->type
, true); i
++) {
369 uint64_t bitfield
= BITFIELD64_BIT(var
->data
.location
+ i
);
370 shader
->info
.vs
.double_inputs
|= bitfield
;
375 case ir_var_shader_out
:
376 var
->data
.mode
= nir_var_shader_out
;
377 if (shader
->info
.stage
== MESA_SHADER_TESS_CTRL
&&
378 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
379 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
380 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
385 var
->data
.mode
= nir_var_uniform
;
388 case ir_var_shader_storage
:
389 var
->data
.mode
= nir_var_shader_storage
;
392 case ir_var_system_value
:
393 var
->data
.mode
= nir_var_system_value
;
397 unreachable("not reached");
400 var
->data
.interpolation
= ir
->data
.interpolation
;
401 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
402 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
403 var
->data
.location_frac
= ir
->data
.location_frac
;
405 if (var
->data
.pixel_center_integer
) {
406 assert(shader
->info
.stage
== MESA_SHADER_FRAGMENT
);
407 shader
->info
.fs
.pixel_center_integer
= true;
410 switch (ir
->data
.depth_layout
) {
411 case ir_depth_layout_none
:
412 var
->data
.depth_layout
= nir_depth_layout_none
;
414 case ir_depth_layout_any
:
415 var
->data
.depth_layout
= nir_depth_layout_any
;
417 case ir_depth_layout_greater
:
418 var
->data
.depth_layout
= nir_depth_layout_greater
;
420 case ir_depth_layout_less
:
421 var
->data
.depth_layout
= nir_depth_layout_less
;
423 case ir_depth_layout_unchanged
:
424 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
427 unreachable("not reached");
430 var
->data
.index
= ir
->data
.index
;
431 var
->data
.descriptor_set
= 0;
432 var
->data
.binding
= ir
->data
.binding
;
433 var
->data
.explicit_binding
= ir
->data
.explicit_binding
;
434 var
->data
.bindless
= ir
->data
.bindless
;
435 var
->data
.offset
= ir
->data
.offset
;
436 var
->data
.image
.read_only
= ir
->data
.memory_read_only
;
437 var
->data
.image
.write_only
= ir
->data
.memory_write_only
;
438 var
->data
.image
.coherent
= ir
->data
.memory_coherent
;
439 var
->data
.image
._volatile
= ir
->data
.memory_volatile
;
440 var
->data
.image
.restrict_flag
= ir
->data
.memory_restrict
;
441 var
->data
.image
.format
= ir
->data
.image_format
;
442 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
444 var
->num_state_slots
= ir
->get_num_state_slots();
445 if (var
->num_state_slots
> 0) {
446 var
->state_slots
= rzalloc_array(var
, nir_state_slot
,
447 var
->num_state_slots
);
449 ir_state_slot
*state_slots
= ir
->get_state_slots();
450 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
451 for (unsigned j
= 0; j
< 5; j
++)
452 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
453 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
456 var
->state_slots
= NULL
;
459 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
461 var
->interface_type
= ir
->get_interface_type();
463 if (var
->data
.mode
== nir_var_local
)
464 nir_function_impl_add_variable(impl
, var
);
466 nir_shader_add_variable(shader
, var
);
468 _mesa_hash_table_insert(var_table
, ir
, var
);
473 nir_function_visitor::visit_enter(ir_function
*ir
)
475 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
476 visitor
->create_function(sig
);
478 return visit_continue_with_parent
;
482 nir_visitor::create_function(ir_function_signature
*ir
)
484 if (ir
->is_intrinsic())
487 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
489 assert(ir
->parameters
.is_empty());
490 assert(ir
->return_type
== glsl_type::void_type
);
492 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
496 nir_visitor::visit(ir_function
*ir
)
498 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
503 nir_visitor::visit(ir_function_signature
*ir
)
505 if (ir
->is_intrinsic())
508 struct hash_entry
*entry
=
509 _mesa_hash_table_search(this->overload_table
, ir
);
512 nir_function
*func
= (nir_function
*) entry
->data
;
514 if (ir
->is_defined
) {
515 nir_function_impl
*impl
= nir_function_impl_create(func
);
518 assert(strcmp(func
->name
, "main") == 0);
519 assert(ir
->parameters
.is_empty());
520 assert(func
->return_type
== glsl_type::void_type
);
522 this->is_global
= false;
524 nir_builder_init(&b
, impl
);
525 b
.cursor
= nir_after_cf_list(&impl
->body
);
526 visit_exec_list(&ir
->body
, this);
528 this->is_global
= true;
535 nir_visitor::visit(ir_loop
*ir
)
538 visit_exec_list(&ir
->body_instructions
, this);
539 nir_pop_loop(&b
, NULL
);
543 nir_visitor::visit(ir_if
*ir
)
545 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
546 visit_exec_list(&ir
->then_instructions
, this);
547 nir_push_else(&b
, NULL
);
548 visit_exec_list(&ir
->else_instructions
, this);
549 nir_pop_if(&b
, NULL
);
553 nir_visitor::visit(ir_discard
*ir
)
556 * discards aren't treated as control flow, because before we lower them
557 * they can appear anywhere in the shader and the stuff after them may still
558 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
559 * discards will be immediately followed by a return.
562 nir_intrinsic_instr
*discard
;
564 discard
= nir_intrinsic_instr_create(this->shader
,
565 nir_intrinsic_discard_if
);
567 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
569 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
572 nir_builder_instr_insert(&b
, &discard
->instr
);
576 nir_visitor::visit(ir_emit_vertex
*ir
)
578 nir_intrinsic_instr
*instr
=
579 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
580 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
581 nir_builder_instr_insert(&b
, &instr
->instr
);
585 nir_visitor::visit(ir_end_primitive
*ir
)
587 nir_intrinsic_instr
*instr
=
588 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
589 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
590 nir_builder_instr_insert(&b
, &instr
->instr
);
594 nir_visitor::visit(ir_loop_jump
*ir
)
598 case ir_loop_jump::jump_break
:
599 type
= nir_jump_break
;
601 case ir_loop_jump::jump_continue
:
602 type
= nir_jump_continue
;
605 unreachable("not reached");
608 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
609 nir_builder_instr_insert(&b
, &instr
->instr
);
613 nir_visitor::visit(ir_return
*ir
)
615 assert(ir
->value
== NULL
);
616 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
617 nir_builder_instr_insert(&b
, &instr
->instr
);
621 nir_visitor::visit(ir_call
*ir
)
623 if (ir
->callee
->is_intrinsic()) {
626 switch (ir
->callee
->intrinsic_id
) {
627 case ir_intrinsic_atomic_counter_read
:
628 op
= nir_intrinsic_atomic_counter_read_deref
;
630 case ir_intrinsic_atomic_counter_increment
:
631 op
= nir_intrinsic_atomic_counter_inc_deref
;
633 case ir_intrinsic_atomic_counter_predecrement
:
634 op
= nir_intrinsic_atomic_counter_dec_deref
;
636 case ir_intrinsic_atomic_counter_add
:
637 op
= nir_intrinsic_atomic_counter_add_deref
;
639 case ir_intrinsic_atomic_counter_and
:
640 op
= nir_intrinsic_atomic_counter_and_deref
;
642 case ir_intrinsic_atomic_counter_or
:
643 op
= nir_intrinsic_atomic_counter_or_deref
;
645 case ir_intrinsic_atomic_counter_xor
:
646 op
= nir_intrinsic_atomic_counter_xor_deref
;
648 case ir_intrinsic_atomic_counter_min
:
649 op
= nir_intrinsic_atomic_counter_min_deref
;
651 case ir_intrinsic_atomic_counter_max
:
652 op
= nir_intrinsic_atomic_counter_max_deref
;
654 case ir_intrinsic_atomic_counter_exchange
:
655 op
= nir_intrinsic_atomic_counter_exchange_deref
;
657 case ir_intrinsic_atomic_counter_comp_swap
:
658 op
= nir_intrinsic_atomic_counter_comp_swap_deref
;
660 case ir_intrinsic_image_load
:
661 op
= nir_intrinsic_image_deref_load
;
663 case ir_intrinsic_image_store
:
664 op
= nir_intrinsic_image_deref_store
;
666 case ir_intrinsic_image_atomic_add
:
667 op
= nir_intrinsic_image_deref_atomic_add
;
669 case ir_intrinsic_image_atomic_min
:
670 op
= nir_intrinsic_image_deref_atomic_min
;
672 case ir_intrinsic_image_atomic_max
:
673 op
= nir_intrinsic_image_deref_atomic_max
;
675 case ir_intrinsic_image_atomic_and
:
676 op
= nir_intrinsic_image_deref_atomic_and
;
678 case ir_intrinsic_image_atomic_or
:
679 op
= nir_intrinsic_image_deref_atomic_or
;
681 case ir_intrinsic_image_atomic_xor
:
682 op
= nir_intrinsic_image_deref_atomic_xor
;
684 case ir_intrinsic_image_atomic_exchange
:
685 op
= nir_intrinsic_image_deref_atomic_exchange
;
687 case ir_intrinsic_image_atomic_comp_swap
:
688 op
= nir_intrinsic_image_deref_atomic_comp_swap
;
690 case ir_intrinsic_memory_barrier
:
691 op
= nir_intrinsic_memory_barrier
;
693 case ir_intrinsic_image_size
:
694 op
= nir_intrinsic_image_deref_size
;
696 case ir_intrinsic_image_samples
:
697 op
= nir_intrinsic_image_deref_samples
;
699 case ir_intrinsic_ssbo_store
:
700 op
= nir_intrinsic_store_ssbo
;
702 case ir_intrinsic_ssbo_load
:
703 op
= nir_intrinsic_load_ssbo
;
705 case ir_intrinsic_ssbo_atomic_add
:
706 op
= nir_intrinsic_ssbo_atomic_add
;
708 case ir_intrinsic_ssbo_atomic_and
:
709 op
= nir_intrinsic_ssbo_atomic_and
;
711 case ir_intrinsic_ssbo_atomic_or
:
712 op
= nir_intrinsic_ssbo_atomic_or
;
714 case ir_intrinsic_ssbo_atomic_xor
:
715 op
= nir_intrinsic_ssbo_atomic_xor
;
717 case ir_intrinsic_ssbo_atomic_min
:
718 assert(ir
->return_deref
);
719 if (ir
->return_deref
->type
== glsl_type::int_type
)
720 op
= nir_intrinsic_ssbo_atomic_imin
;
721 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
722 op
= nir_intrinsic_ssbo_atomic_umin
;
724 unreachable("Invalid type");
726 case ir_intrinsic_ssbo_atomic_max
:
727 assert(ir
->return_deref
);
728 if (ir
->return_deref
->type
== glsl_type::int_type
)
729 op
= nir_intrinsic_ssbo_atomic_imax
;
730 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
731 op
= nir_intrinsic_ssbo_atomic_umax
;
733 unreachable("Invalid type");
735 case ir_intrinsic_ssbo_atomic_exchange
:
736 op
= nir_intrinsic_ssbo_atomic_exchange
;
738 case ir_intrinsic_ssbo_atomic_comp_swap
:
739 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
741 case ir_intrinsic_shader_clock
:
742 op
= nir_intrinsic_shader_clock
;
744 case ir_intrinsic_begin_invocation_interlock
:
745 op
= nir_intrinsic_begin_invocation_interlock
;
747 case ir_intrinsic_end_invocation_interlock
:
748 op
= nir_intrinsic_end_invocation_interlock
;
750 case ir_intrinsic_group_memory_barrier
:
751 op
= nir_intrinsic_group_memory_barrier
;
753 case ir_intrinsic_memory_barrier_atomic_counter
:
754 op
= nir_intrinsic_memory_barrier_atomic_counter
;
756 case ir_intrinsic_memory_barrier_buffer
:
757 op
= nir_intrinsic_memory_barrier_buffer
;
759 case ir_intrinsic_memory_barrier_image
:
760 op
= nir_intrinsic_memory_barrier_image
;
762 case ir_intrinsic_memory_barrier_shared
:
763 op
= nir_intrinsic_memory_barrier_shared
;
765 case ir_intrinsic_shared_load
:
766 op
= nir_intrinsic_load_shared
;
768 case ir_intrinsic_shared_store
:
769 op
= nir_intrinsic_store_shared
;
771 case ir_intrinsic_shared_atomic_add
:
772 op
= nir_intrinsic_shared_atomic_add
;
774 case ir_intrinsic_shared_atomic_and
:
775 op
= nir_intrinsic_shared_atomic_and
;
777 case ir_intrinsic_shared_atomic_or
:
778 op
= nir_intrinsic_shared_atomic_or
;
780 case ir_intrinsic_shared_atomic_xor
:
781 op
= nir_intrinsic_shared_atomic_xor
;
783 case ir_intrinsic_shared_atomic_min
:
784 assert(ir
->return_deref
);
785 if (ir
->return_deref
->type
== glsl_type::int_type
)
786 op
= nir_intrinsic_shared_atomic_imin
;
787 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
788 op
= nir_intrinsic_shared_atomic_umin
;
790 unreachable("Invalid type");
792 case ir_intrinsic_shared_atomic_max
:
793 assert(ir
->return_deref
);
794 if (ir
->return_deref
->type
== glsl_type::int_type
)
795 op
= nir_intrinsic_shared_atomic_imax
;
796 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
797 op
= nir_intrinsic_shared_atomic_umax
;
799 unreachable("Invalid type");
801 case ir_intrinsic_shared_atomic_exchange
:
802 op
= nir_intrinsic_shared_atomic_exchange
;
804 case ir_intrinsic_shared_atomic_comp_swap
:
805 op
= nir_intrinsic_shared_atomic_comp_swap
;
807 case ir_intrinsic_vote_any
:
808 op
= nir_intrinsic_vote_any
;
810 case ir_intrinsic_vote_all
:
811 op
= nir_intrinsic_vote_all
;
813 case ir_intrinsic_vote_eq
:
814 op
= nir_intrinsic_vote_ieq
;
816 case ir_intrinsic_ballot
:
817 op
= nir_intrinsic_ballot
;
819 case ir_intrinsic_read_invocation
:
820 op
= nir_intrinsic_read_invocation
;
822 case ir_intrinsic_read_first_invocation
:
823 op
= nir_intrinsic_read_first_invocation
;
826 unreachable("not reached");
829 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
830 nir_dest
*dest
= &instr
->dest
;
833 case nir_intrinsic_atomic_counter_read_deref
:
834 case nir_intrinsic_atomic_counter_inc_deref
:
835 case nir_intrinsic_atomic_counter_dec_deref
:
836 case nir_intrinsic_atomic_counter_add_deref
:
837 case nir_intrinsic_atomic_counter_min_deref
:
838 case nir_intrinsic_atomic_counter_max_deref
:
839 case nir_intrinsic_atomic_counter_and_deref
:
840 case nir_intrinsic_atomic_counter_or_deref
:
841 case nir_intrinsic_atomic_counter_xor_deref
:
842 case nir_intrinsic_atomic_counter_exchange_deref
:
843 case nir_intrinsic_atomic_counter_comp_swap_deref
: {
844 /* Set the counter variable dereference. */
845 exec_node
*param
= ir
->actual_parameters
.get_head();
846 ir_dereference
*counter
= (ir_dereference
*)param
;
848 instr
->src
[0] = nir_src_for_ssa(&evaluate_deref(counter
)->dest
.ssa
);
849 param
= param
->get_next();
851 /* Set the intrinsic destination. */
852 if (ir
->return_deref
) {
853 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
856 /* Set the intrinsic parameters. */
857 if (!param
->is_tail_sentinel()) {
859 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
860 param
= param
->get_next();
863 if (!param
->is_tail_sentinel()) {
865 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
866 param
= param
->get_next();
869 nir_builder_instr_insert(&b
, &instr
->instr
);
872 case nir_intrinsic_image_deref_load
:
873 case nir_intrinsic_image_deref_store
:
874 case nir_intrinsic_image_deref_atomic_add
:
875 case nir_intrinsic_image_deref_atomic_min
:
876 case nir_intrinsic_image_deref_atomic_max
:
877 case nir_intrinsic_image_deref_atomic_and
:
878 case nir_intrinsic_image_deref_atomic_or
:
879 case nir_intrinsic_image_deref_atomic_xor
:
880 case nir_intrinsic_image_deref_atomic_exchange
:
881 case nir_intrinsic_image_deref_atomic_comp_swap
:
882 case nir_intrinsic_image_deref_samples
:
883 case nir_intrinsic_image_deref_size
: {
884 nir_ssa_undef_instr
*instr_undef
=
885 nir_ssa_undef_instr_create(shader
, 1, 32);
886 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
888 /* Set the image variable dereference. */
889 exec_node
*param
= ir
->actual_parameters
.get_head();
890 ir_dereference
*image
= (ir_dereference
*)param
;
891 const glsl_type
*type
=
892 image
->variable_referenced()->type
->without_array();
894 instr
->src
[0] = nir_src_for_ssa(&evaluate_deref(image
)->dest
.ssa
);
895 param
= param
->get_next();
897 /* Set the intrinsic destination. */
898 if (ir
->return_deref
) {
899 unsigned num_components
= ir
->return_deref
->type
->vector_elements
;
900 if (instr
->intrinsic
== nir_intrinsic_image_deref_size
)
901 instr
->num_components
= num_components
;
902 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
903 num_components
, 32, NULL
);
906 if (op
== nir_intrinsic_image_deref_size
||
907 op
== nir_intrinsic_image_deref_samples
) {
908 nir_builder_instr_insert(&b
, &instr
->instr
);
912 /* Set the address argument, extending the coordinate vector to four
915 nir_ssa_def
*src_addr
=
916 evaluate_rvalue((ir_dereference
*)param
);
917 nir_ssa_def
*srcs
[4];
919 for (int i
= 0; i
< 4; i
++) {
920 if (i
< type
->coordinate_components())
921 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
923 srcs
[i
] = &instr_undef
->def
;
926 instr
->src
[1] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
927 param
= param
->get_next();
929 /* Set the sample argument, which is undefined for single-sample
932 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
934 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
935 param
= param
->get_next();
937 instr
->src
[2] = nir_src_for_ssa(&instr_undef
->def
);
940 /* Set the intrinsic parameters. */
941 if (!param
->is_tail_sentinel()) {
943 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
944 param
= param
->get_next();
947 if (!param
->is_tail_sentinel()) {
949 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
950 param
= param
->get_next();
952 nir_builder_instr_insert(&b
, &instr
->instr
);
955 case nir_intrinsic_memory_barrier
:
956 case nir_intrinsic_group_memory_barrier
:
957 case nir_intrinsic_memory_barrier_atomic_counter
:
958 case nir_intrinsic_memory_barrier_buffer
:
959 case nir_intrinsic_memory_barrier_image
:
960 case nir_intrinsic_memory_barrier_shared
:
961 nir_builder_instr_insert(&b
, &instr
->instr
);
963 case nir_intrinsic_shader_clock
:
964 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 2, 32, NULL
);
965 instr
->num_components
= 2;
966 nir_builder_instr_insert(&b
, &instr
->instr
);
968 case nir_intrinsic_begin_invocation_interlock
:
969 nir_builder_instr_insert(&b
, &instr
->instr
);
971 case nir_intrinsic_end_invocation_interlock
:
972 nir_builder_instr_insert(&b
, &instr
->instr
);
974 case nir_intrinsic_store_ssbo
: {
975 exec_node
*param
= ir
->actual_parameters
.get_head();
976 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
978 param
= param
->get_next();
979 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
981 param
= param
->get_next();
982 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
984 param
= param
->get_next();
985 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
988 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
989 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
990 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
991 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
992 instr
->num_components
= val
->type
->vector_elements
;
994 nir_builder_instr_insert(&b
, &instr
->instr
);
997 case nir_intrinsic_load_ssbo
: {
998 exec_node
*param
= ir
->actual_parameters
.get_head();
999 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
1001 param
= param
->get_next();
1002 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1004 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
1005 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1007 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1008 instr
->num_components
= type
->vector_elements
;
1010 /* Setup destination register */
1011 unsigned bit_size
= glsl_get_bit_size(type
);
1012 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1013 type
->vector_elements
, bit_size
, NULL
);
1015 /* Insert the created nir instruction now since in the case of boolean
1016 * result we will need to emit another instruction after it
1018 nir_builder_instr_insert(&b
, &instr
->instr
);
1021 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
1022 * consider a true boolean to be ~0. Fix this up with a != 0
1025 if (type
->is_boolean()) {
1026 nir_alu_instr
*load_ssbo_compare
=
1027 nir_alu_instr_create(shader
, nir_op_ine
);
1028 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
1029 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
1030 load_ssbo_compare
->src
[1].src
=
1031 nir_src_for_ssa(nir_imm_int(&b
, 0));
1032 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
1033 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
1034 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
1035 &load_ssbo_compare
->dest
.dest
,
1036 type
->vector_elements
, bit_size
, NULL
);
1037 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
1038 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
1039 dest
= &load_ssbo_compare
->dest
.dest
;
1043 case nir_intrinsic_ssbo_atomic_add
:
1044 case nir_intrinsic_ssbo_atomic_imin
:
1045 case nir_intrinsic_ssbo_atomic_umin
:
1046 case nir_intrinsic_ssbo_atomic_imax
:
1047 case nir_intrinsic_ssbo_atomic_umax
:
1048 case nir_intrinsic_ssbo_atomic_and
:
1049 case nir_intrinsic_ssbo_atomic_or
:
1050 case nir_intrinsic_ssbo_atomic_xor
:
1051 case nir_intrinsic_ssbo_atomic_exchange
:
1052 case nir_intrinsic_ssbo_atomic_comp_swap
: {
1053 int param_count
= ir
->actual_parameters
.length();
1054 assert(param_count
== 3 || param_count
== 4);
1057 exec_node
*param
= ir
->actual_parameters
.get_head();
1058 ir_instruction
*inst
= (ir_instruction
*) param
;
1059 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1062 param
= param
->get_next();
1063 inst
= (ir_instruction
*) param
;
1064 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1066 /* data1 parameter (this is always present) */
1067 param
= param
->get_next();
1068 inst
= (ir_instruction
*) param
;
1069 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1071 /* data2 parameter (only with atomic_comp_swap) */
1072 if (param_count
== 4) {
1073 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
1074 param
= param
->get_next();
1075 inst
= (ir_instruction
*) param
;
1076 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1080 assert(ir
->return_deref
);
1081 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1082 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1083 nir_builder_instr_insert(&b
, &instr
->instr
);
1086 case nir_intrinsic_load_shared
: {
1087 exec_node
*param
= ir
->actual_parameters
.get_head();
1088 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1090 nir_intrinsic_set_base(instr
, 0);
1091 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1093 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1094 instr
->num_components
= type
->vector_elements
;
1096 /* Setup destination register */
1097 unsigned bit_size
= glsl_get_bit_size(type
);
1098 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1099 type
->vector_elements
, bit_size
, NULL
);
1101 nir_builder_instr_insert(&b
, &instr
->instr
);
1104 case nir_intrinsic_store_shared
: {
1105 exec_node
*param
= ir
->actual_parameters
.get_head();
1106 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1108 param
= param
->get_next();
1109 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1111 param
= param
->get_next();
1112 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1115 nir_intrinsic_set_base(instr
, 0);
1116 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1118 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1120 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1121 instr
->num_components
= val
->type
->vector_elements
;
1123 nir_builder_instr_insert(&b
, &instr
->instr
);
1126 case nir_intrinsic_shared_atomic_add
:
1127 case nir_intrinsic_shared_atomic_imin
:
1128 case nir_intrinsic_shared_atomic_umin
:
1129 case nir_intrinsic_shared_atomic_imax
:
1130 case nir_intrinsic_shared_atomic_umax
:
1131 case nir_intrinsic_shared_atomic_and
:
1132 case nir_intrinsic_shared_atomic_or
:
1133 case nir_intrinsic_shared_atomic_xor
:
1134 case nir_intrinsic_shared_atomic_exchange
:
1135 case nir_intrinsic_shared_atomic_comp_swap
: {
1136 int param_count
= ir
->actual_parameters
.length();
1137 assert(param_count
== 2 || param_count
== 3);
1140 exec_node
*param
= ir
->actual_parameters
.get_head();
1141 ir_instruction
*inst
= (ir_instruction
*) param
;
1142 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1144 /* data1 parameter (this is always present) */
1145 param
= param
->get_next();
1146 inst
= (ir_instruction
*) param
;
1147 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1149 /* data2 parameter (only with atomic_comp_swap) */
1150 if (param_count
== 3) {
1151 assert(op
== nir_intrinsic_shared_atomic_comp_swap
);
1152 param
= param
->get_next();
1153 inst
= (ir_instruction
*) param
;
1155 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1159 assert(ir
->return_deref
);
1160 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1161 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1162 ir
->return_deref
->type
->vector_elements
,
1164 nir_builder_instr_insert(&b
, &instr
->instr
);
1167 case nir_intrinsic_vote_any
:
1168 case nir_intrinsic_vote_all
:
1169 case nir_intrinsic_vote_ieq
: {
1170 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
1171 instr
->num_components
= 1;
1173 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1174 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1176 nir_builder_instr_insert(&b
, &instr
->instr
);
1180 case nir_intrinsic_ballot
: {
1181 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1182 ir
->return_deref
->type
->vector_elements
, 64, NULL
);
1183 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1185 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1186 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1188 nir_builder_instr_insert(&b
, &instr
->instr
);
1191 case nir_intrinsic_read_invocation
: {
1192 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1193 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1194 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1196 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1197 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1199 ir_rvalue
*invocation
= (ir_rvalue
*) ir
->actual_parameters
.get_head()->next
;
1200 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(invocation
));
1202 nir_builder_instr_insert(&b
, &instr
->instr
);
1205 case nir_intrinsic_read_first_invocation
: {
1206 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1207 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1208 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1210 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1211 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1213 nir_builder_instr_insert(&b
, &instr
->instr
);
1217 unreachable("not reached");
1220 if (ir
->return_deref
)
1221 nir_store_deref(&b
, evaluate_deref(ir
->return_deref
), &dest
->ssa
, ~0);
1226 unreachable("glsl_to_nir only handles function calls to intrinsics");
1230 nir_visitor::visit(ir_assignment
*ir
)
1232 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1234 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1235 ir
->lhs
->variable_referenced()->data
.precise
;
1237 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1238 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1239 if (ir
->condition
) {
1240 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1241 nir_copy_deref(&b
, evaluate_deref(ir
->lhs
), evaluate_deref(ir
->rhs
));
1242 nir_pop_if(&b
, NULL
);
1244 nir_copy_deref(&b
, evaluate_deref(ir
->lhs
), evaluate_deref(ir
->rhs
));
1249 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1251 ir
->lhs
->accept(this);
1252 nir_deref_instr
*lhs_deref
= this->deref
;
1253 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1255 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1256 /* GLSL IR will give us the input to the write-masked assignment in a
1257 * single packed vector. So, for example, if the writemask is xzw, then
1258 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1262 unsigned component
= 0;
1263 for (unsigned i
= 0; i
< 4; i
++) {
1264 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1266 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1269 if (ir
->condition
) {
1270 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1271 nir_store_deref(&b
, lhs_deref
, src
, ir
->write_mask
);
1272 nir_pop_if(&b
, NULL
);
1274 nir_store_deref(&b
, lhs_deref
, src
, ir
->write_mask
);
1279 * Given an instruction, returns a pointer to its destination or NULL if there
1280 * is no destination.
1282 * Note that this only handles instructions we generate at this level.
1285 get_instr_dest(nir_instr
*instr
)
1287 nir_alu_instr
*alu_instr
;
1288 nir_intrinsic_instr
*intrinsic_instr
;
1289 nir_tex_instr
*tex_instr
;
1291 switch (instr
->type
) {
1292 case nir_instr_type_alu
:
1293 alu_instr
= nir_instr_as_alu(instr
);
1294 return &alu_instr
->dest
.dest
;
1296 case nir_instr_type_intrinsic
:
1297 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1298 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1299 return &intrinsic_instr
->dest
;
1303 case nir_instr_type_tex
:
1304 tex_instr
= nir_instr_as_tex(instr
);
1305 return &tex_instr
->dest
;
1308 unreachable("not reached");
1315 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1318 nir_dest
*dest
= get_instr_dest(instr
);
1321 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1323 nir_builder_instr_insert(&b
, instr
);
1326 assert(dest
->is_ssa
);
1327 this->result
= &dest
->ssa
;
1332 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1335 if (ir
->as_dereference() || ir
->as_constant()) {
1337 * A dereference is being used on the right hand side, which means we
1338 * must emit a variable load.
1341 this->result
= nir_load_deref(&b
, this->deref
);
1344 return this->result
;
1348 type_is_float(glsl_base_type type
)
1350 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
||
1351 type
== GLSL_TYPE_FLOAT16
;
1355 type_is_signed(glsl_base_type type
)
1357 return type
== GLSL_TYPE_INT
|| type
== GLSL_TYPE_INT64
||
1358 type
== GLSL_TYPE_INT16
;
1362 nir_visitor::visit(ir_expression
*ir
)
1364 /* Some special cases */
1365 switch (ir
->operation
) {
1366 case ir_binop_ubo_load
: {
1367 nir_intrinsic_instr
*load
=
1368 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1369 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1370 load
->num_components
= ir
->type
->vector_elements
;
1371 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1372 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1373 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1376 * In UBO's, a true boolean value is any non-zero value, but we consider
1377 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1380 if (ir
->type
->is_boolean())
1381 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1386 case ir_unop_interpolate_at_centroid
:
1387 case ir_binop_interpolate_at_offset
:
1388 case ir_binop_interpolate_at_sample
: {
1389 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1390 ir_swizzle
*swizzle
= NULL
;
1392 /* the api does not allow a swizzle here, but the varying packing code
1393 * may have pushed one into here.
1395 swizzle
= ir
->operands
[0]->as_swizzle();
1397 deref
= swizzle
->val
->as_dereference();
1401 deref
->accept(this);
1403 nir_intrinsic_op op
;
1404 if (this->deref
->mode
== nir_var_shader_in
) {
1405 switch (ir
->operation
) {
1406 case ir_unop_interpolate_at_centroid
:
1407 op
= nir_intrinsic_interp_deref_at_centroid
;
1409 case ir_binop_interpolate_at_offset
:
1410 op
= nir_intrinsic_interp_deref_at_offset
;
1412 case ir_binop_interpolate_at_sample
:
1413 op
= nir_intrinsic_interp_deref_at_sample
;
1416 unreachable("Invalid interpolation intrinsic");
1419 /* This case can happen if the vertex shader does not write the
1420 * given varying. In this case, the linker will lower it to a
1421 * global variable. Since interpolating a variable makes no
1422 * sense, we'll just turn it into a load which will probably
1423 * eventually end up as an SSA definition.
1425 assert(this->deref
->mode
== nir_var_global
);
1426 op
= nir_intrinsic_load_deref
;
1429 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1430 intrin
->num_components
= deref
->type
->vector_elements
;
1431 intrin
->src
[0] = nir_src_for_ssa(&this->deref
->dest
.ssa
);
1433 if (intrin
->intrinsic
== nir_intrinsic_interp_deref_at_offset
||
1434 intrin
->intrinsic
== nir_intrinsic_interp_deref_at_sample
)
1435 intrin
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1437 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1438 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1441 unsigned swiz
[4] = {
1442 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1445 result
= nir_swizzle(&b
, result
, swiz
,
1446 swizzle
->type
->vector_elements
, false);
1456 nir_ssa_def
*srcs
[4];
1457 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1458 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1460 glsl_base_type types
[4];
1461 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1463 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1465 types
[i
] = GLSL_TYPE_FLOAT
;
1467 glsl_base_type out_type
;
1469 out_type
= ir
->type
->base_type
;
1471 out_type
= GLSL_TYPE_FLOAT
;
1473 switch (ir
->operation
) {
1474 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1475 case ir_unop_logic_not
:
1476 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1479 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1480 : nir_ineg(&b
, srcs
[0]);
1483 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1484 : nir_iabs(&b
, srcs
[0]);
1486 case ir_unop_saturate
:
1487 assert(type_is_float(types
[0]));
1488 result
= nir_fsat(&b
, srcs
[0]);
1491 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1492 : nir_isign(&b
, srcs
[0]);
1494 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1495 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1496 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1497 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1498 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1499 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1500 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1502 result
= supports_ints
? nir_i2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1505 result
= supports_ints
? nir_u2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1508 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1542 case ir_unop_i642u64
:
1543 case ir_unop_u642i64
: {
1544 nir_alu_type src_type
= nir_get_nir_type_for_glsl_base_type(types
[0]);
1545 nir_alu_type dst_type
= nir_get_nir_type_for_glsl_base_type(out_type
);
1546 result
= nir_build_alu(&b
, nir_type_conversion_op(src_type
, dst_type
,
1547 nir_rounding_mode_undef
),
1548 srcs
[0], NULL
, NULL
, NULL
);
1549 /* b2i and b2f don't have fixed bit-size versions so the builder will
1550 * just assume 32 and we have to fix it up here.
1552 result
->bit_size
= nir_alu_type_get_type_size(dst_type
);
1556 case ir_unop_bitcast_i2f
:
1557 case ir_unop_bitcast_f2i
:
1558 case ir_unop_bitcast_u2f
:
1559 case ir_unop_bitcast_f2u
:
1560 case ir_unop_bitcast_i642d
:
1561 case ir_unop_bitcast_d2i64
:
1562 case ir_unop_bitcast_u642d
:
1563 case ir_unop_bitcast_d2u64
:
1564 case ir_unop_subroutine_to_int
:
1566 result
= nir_imov(&b
, srcs
[0]);
1568 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1569 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1570 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1571 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1572 case ir_unop_frexp_exp
: result
= nir_frexp_exp(&b
, srcs
[0]); break;
1573 case ir_unop_frexp_sig
: result
= nir_frexp_sig(&b
, srcs
[0]); break;
1574 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1575 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1576 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1577 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1578 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1579 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1580 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1581 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1582 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1583 case ir_unop_pack_snorm_2x16
:
1584 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1586 case ir_unop_pack_snorm_4x8
:
1587 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1589 case ir_unop_pack_unorm_2x16
:
1590 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1592 case ir_unop_pack_unorm_4x8
:
1593 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1595 case ir_unop_pack_half_2x16
:
1596 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1598 case ir_unop_unpack_snorm_2x16
:
1599 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1601 case ir_unop_unpack_snorm_4x8
:
1602 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1604 case ir_unop_unpack_unorm_2x16
:
1605 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1607 case ir_unop_unpack_unorm_4x8
:
1608 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1610 case ir_unop_unpack_half_2x16
:
1611 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1613 case ir_unop_pack_sampler_2x32
:
1614 case ir_unop_pack_image_2x32
:
1615 case ir_unop_pack_double_2x32
:
1616 case ir_unop_pack_int_2x32
:
1617 case ir_unop_pack_uint_2x32
:
1618 result
= nir_pack_64_2x32(&b
, srcs
[0]);
1620 case ir_unop_unpack_sampler_2x32
:
1621 case ir_unop_unpack_image_2x32
:
1622 case ir_unop_unpack_double_2x32
:
1623 case ir_unop_unpack_int_2x32
:
1624 case ir_unop_unpack_uint_2x32
:
1625 result
= nir_unpack_64_2x32(&b
, srcs
[0]);
1627 case ir_unop_bitfield_reverse
:
1628 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1630 case ir_unop_bit_count
:
1631 result
= nir_bit_count(&b
, srcs
[0]);
1633 case ir_unop_find_msb
:
1635 case GLSL_TYPE_UINT
:
1636 result
= nir_ufind_msb(&b
, srcs
[0]);
1639 result
= nir_ifind_msb(&b
, srcs
[0]);
1642 unreachable("Invalid type for findMSB()");
1645 case ir_unop_find_lsb
:
1646 result
= nir_find_lsb(&b
, srcs
[0]);
1650 switch (ir
->type
->vector_elements
) {
1652 switch (ir
->operands
[0]->type
->vector_elements
) {
1653 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1654 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1655 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1656 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1657 default: unreachable("not reached");
1661 switch (ir
->operands
[0]->type
->vector_elements
) {
1662 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1663 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1664 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1665 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1666 default: unreachable("not reached");
1670 switch (ir
->operands
[0]->type
->vector_elements
) {
1671 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1672 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1673 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1674 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1675 default: unreachable("not reached");
1679 switch (ir
->operands
[0]->type
->vector_elements
) {
1680 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1681 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1682 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1683 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1684 default: unreachable("not reached");
1688 unreachable("not reached");
1691 case ir_unop_get_buffer_size
: {
1692 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1694 nir_intrinsic_get_buffer_size
);
1695 load
->num_components
= ir
->type
->vector_elements
;
1696 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1697 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1698 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1703 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1704 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1707 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1708 : nir_isub(&b
, srcs
[0], srcs
[1]);
1711 result
= type_is_float(out_type
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1712 : nir_imul(&b
, srcs
[0], srcs
[1]);
1715 if (type_is_float(out_type
))
1716 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1717 else if (type_is_signed(out_type
))
1718 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1720 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1723 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1724 : nir_umod(&b
, srcs
[0], srcs
[1]);
1727 if (type_is_float(out_type
))
1728 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1729 else if (type_is_signed(out_type
))
1730 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1732 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1735 if (type_is_float(out_type
))
1736 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1737 else if (type_is_signed(out_type
))
1738 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1740 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1742 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1743 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1744 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1745 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1746 case ir_binop_logic_and
:
1747 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1748 : nir_fand(&b
, srcs
[0], srcs
[1]);
1750 case ir_binop_logic_or
:
1751 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1752 : nir_for(&b
, srcs
[0], srcs
[1]);
1754 case ir_binop_logic_xor
:
1755 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1756 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1758 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1759 case ir_binop_rshift
:
1760 result
= (type_is_signed(out_type
)) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1761 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1763 case ir_binop_imul_high
:
1764 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1765 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1767 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1768 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1770 if (supports_ints
) {
1771 if (type_is_float(types
[0]))
1772 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1773 else if (type_is_signed(types
[0]))
1774 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1776 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1778 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1781 case ir_binop_gequal
:
1782 if (supports_ints
) {
1783 if (type_is_float(types
[0]))
1784 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1785 else if (type_is_signed(types
[0]))
1786 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1788 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1790 result
= nir_sge(&b
, srcs
[0], srcs
[1]);
1793 case ir_binop_equal
:
1794 if (supports_ints
) {
1795 if (type_is_float(types
[0]))
1796 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1798 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1800 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1803 case ir_binop_nequal
:
1804 if (supports_ints
) {
1805 if (type_is_float(types
[0]))
1806 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1808 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1810 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1813 case ir_binop_all_equal
:
1814 if (supports_ints
) {
1815 if (type_is_float(types
[0])) {
1816 switch (ir
->operands
[0]->type
->vector_elements
) {
1817 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1818 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1819 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1820 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1822 unreachable("not reached");
1825 switch (ir
->operands
[0]->type
->vector_elements
) {
1826 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1827 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1828 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1829 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1831 unreachable("not reached");
1835 switch (ir
->operands
[0]->type
->vector_elements
) {
1836 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1837 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1838 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1839 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1841 unreachable("not reached");
1845 case ir_binop_any_nequal
:
1846 if (supports_ints
) {
1847 if (type_is_float(types
[0])) {
1848 switch (ir
->operands
[0]->type
->vector_elements
) {
1849 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1850 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1851 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1852 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1854 unreachable("not reached");
1857 switch (ir
->operands
[0]->type
->vector_elements
) {
1858 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1859 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1860 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1861 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1863 unreachable("not reached");
1867 switch (ir
->operands
[0]->type
->vector_elements
) {
1868 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1869 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1870 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1871 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1873 unreachable("not reached");
1878 switch (ir
->operands
[0]->type
->vector_elements
) {
1879 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1880 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1881 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1883 unreachable("not reached");
1886 case ir_binop_vector_extract
: {
1887 result
= nir_channel(&b
, srcs
[0], 0);
1888 for (unsigned i
= 1; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1889 nir_ssa_def
*swizzled
= nir_channel(&b
, srcs
[0], i
);
1890 result
= nir_bcsel(&b
, nir_ieq(&b
, srcs
[1], nir_imm_int(&b
, i
)),
1896 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1898 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1901 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1905 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1907 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1909 case ir_triop_bitfield_extract
:
1910 result
= (out_type
== GLSL_TYPE_INT
) ?
1911 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1912 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1914 case ir_quadop_bitfield_insert
:
1915 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1917 case ir_quadop_vector
:
1918 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1922 unreachable("not reached");
1927 nir_visitor::visit(ir_swizzle
*ir
)
1929 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1930 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1931 ir
->type
->vector_elements
, !supports_ints
);
1935 nir_visitor::visit(ir_texture
*ir
)
1942 num_srcs
= 1; /* coordinate */
1947 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1948 num_srcs
= 2; /* coordinate, bias/lod */
1952 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1958 if (ir
->lod_info
.lod
!= NULL
)
1959 num_srcs
= 2; /* coordinate, lod */
1961 num_srcs
= 1; /* coordinate */
1965 op
= nir_texop_txf_ms
;
1966 num_srcs
= 2; /* coordinate, sample_index */
1971 if (ir
->lod_info
.lod
!= NULL
)
1972 num_srcs
= 1; /* lod */
1979 num_srcs
= 1; /* coordinate */
1984 num_srcs
= 1; /* coordinate */
1987 case ir_query_levels
:
1988 op
= nir_texop_query_levels
;
1992 case ir_texture_samples
:
1993 op
= nir_texop_texture_samples
;
1997 case ir_samples_identical
:
1998 op
= nir_texop_samples_identical
;
1999 num_srcs
= 1; /* coordinate */
2003 unreachable("not reached");
2006 if (ir
->projector
!= NULL
)
2008 if (ir
->shadow_comparator
!= NULL
)
2010 if (ir
->offset
!= NULL
)
2013 /* Add one for the texture deref */
2016 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
2019 instr
->sampler_dim
=
2020 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
2021 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
2022 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
2023 if (instr
->is_shadow
)
2024 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
2025 switch (ir
->type
->base_type
) {
2026 case GLSL_TYPE_FLOAT
:
2027 instr
->dest_type
= nir_type_float
;
2030 instr
->dest_type
= nir_type_int
;
2032 case GLSL_TYPE_BOOL
:
2033 case GLSL_TYPE_UINT
:
2034 instr
->dest_type
= nir_type_uint
;
2037 unreachable("not reached");
2040 nir_deref_instr
*sampler_deref
= evaluate_deref(ir
->sampler
);
2041 instr
->src
[0].src
= nir_src_for_ssa(&sampler_deref
->dest
.ssa
);
2042 instr
->src
[0].src_type
= nir_tex_src_texture_deref
;
2044 unsigned src_number
= 1;
2046 if (ir
->coordinate
!= NULL
) {
2047 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
2048 instr
->src
[src_number
].src
=
2049 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
2050 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2054 if (ir
->projector
!= NULL
) {
2055 instr
->src
[src_number
].src
=
2056 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
2057 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2061 if (ir
->shadow_comparator
!= NULL
) {
2062 instr
->src
[src_number
].src
=
2063 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparator
));
2064 instr
->src
[src_number
].src_type
= nir_tex_src_comparator
;
2068 if (ir
->offset
!= NULL
) {
2069 /* we don't support multiple offsets yet */
2070 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2072 instr
->src
[src_number
].src
=
2073 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
2074 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2080 instr
->src
[src_number
].src
=
2081 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
2082 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2089 if (ir
->lod_info
.lod
!= NULL
) {
2090 instr
->src
[src_number
].src
=
2091 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
2092 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2098 instr
->src
[src_number
].src
=
2099 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
2100 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2102 instr
->src
[src_number
].src
=
2103 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
2104 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2109 instr
->src
[src_number
].src
=
2110 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
2111 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2116 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2123 assert(src_number
== num_srcs
);
2125 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2126 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2130 nir_visitor::visit(ir_constant
*ir
)
2133 * We don't know if this variable is an array or struct that gets
2134 * dereferenced, so do the safe thing an make it a variable with a
2135 * constant initializer and return a dereference.
2139 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2140 var
->data
.read_only
= true;
2141 var
->constant_initializer
= constant_copy(ir
, var
);
2143 this->deref
= nir_build_deref_var(&b
, var
);
2147 nir_visitor::visit(ir_dereference_variable
*ir
)
2149 struct hash_entry
*entry
=
2150 _mesa_hash_table_search(this->var_table
, ir
->var
);
2152 nir_variable
*var
= (nir_variable
*) entry
->data
;
2154 this->deref
= nir_build_deref_var(&b
, var
);
2158 nir_visitor::visit(ir_dereference_record
*ir
)
2160 ir
->record
->accept(this);
2162 int field_index
= ir
->field_idx
;
2163 assert(field_index
>= 0);
2165 this->deref
= nir_build_deref_struct(&b
, this->deref
, field_index
);
2169 nir_visitor::visit(ir_dereference_array
*ir
)
2171 nir_ssa_def
*index
= evaluate_rvalue(ir
->array_index
);
2173 ir
->array
->accept(this);
2175 this->deref
= nir_build_deref_array(&b
, this->deref
, index
);
2179 nir_visitor::visit(ir_barrier
*)
2181 nir_intrinsic_instr
*instr
=
2182 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2183 nir_builder_instr_insert(&b
, &instr
->instr
);