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 glsl_to_nir(const struct gl_shader_program
*shader_prog
,
133 gl_shader_stage stage
,
134 const nir_shader_compiler_options
*options
)
136 struct gl_linked_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
138 nir_shader
*shader
= nir_shader_create(NULL
, stage
, options
,
141 nir_visitor
v1(shader
);
142 nir_function_visitor
v2(&v1
);
144 visit_exec_list(sh
->ir
, &v1
);
146 nir_lower_constant_initializers(shader
, (nir_variable_mode
)~0);
148 /* Remap the locations to slots so those requiring two slots will occupy
149 * two locations. For instance, if we have in the IR code a dvec3 attr0 in
150 * location 0 and vec4 attr1 in location 1, in NIR attr0 will use
151 * locations/slots 0 and 1, and attr1 will use location/slot 2 */
152 if (shader
->info
.stage
== MESA_SHADER_VERTEX
)
153 nir_remap_attributes(shader
, options
);
155 shader
->info
.name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
156 if (shader_prog
->Label
)
157 shader
->info
.label
= ralloc_strdup(shader
, shader_prog
->Label
);
159 /* Check for transform feedback varyings specified via the API */
160 shader
->info
.has_transform_feedback_varyings
=
161 shader_prog
->TransformFeedback
.NumVarying
> 0;
163 /* Check for transform feedback varyings specified in the Shader */
164 if (shader_prog
->last_vert_prog
)
165 shader
->info
.has_transform_feedback_varyings
|=
166 shader_prog
->last_vert_prog
->sh
.LinkedTransformFeedback
->NumVarying
> 0;
171 nir_visitor::nir_visitor(nir_shader
*shader
)
173 this->supports_ints
= shader
->options
->native_integers
;
174 this->shader
= shader
;
175 this->is_global
= true;
176 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
177 _mesa_key_pointer_equal
);
178 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
179 _mesa_key_pointer_equal
);
183 memset(&this->b
, 0, sizeof(this->b
));
186 nir_visitor::~nir_visitor()
188 _mesa_hash_table_destroy(this->var_table
, NULL
);
189 _mesa_hash_table_destroy(this->overload_table
, NULL
);
193 nir_visitor::evaluate_deref(ir_instruction
*ir
)
199 static nir_constant
*
200 constant_copy(ir_constant
*ir
, void *mem_ctx
)
205 nir_constant
*ret
= rzalloc(mem_ctx
, nir_constant
);
207 const unsigned rows
= ir
->type
->vector_elements
;
208 const unsigned cols
= ir
->type
->matrix_columns
;
211 ret
->num_elements
= 0;
212 switch (ir
->type
->base_type
) {
214 /* Only float base types can be matrices. */
217 for (unsigned r
= 0; r
< rows
; r
++)
218 ret
->values
[0].u32
[r
] = ir
->value
.u
[r
];
223 /* Only float base types can be matrices. */
226 for (unsigned r
= 0; r
< rows
; r
++)
227 ret
->values
[0].i32
[r
] = ir
->value
.i
[r
];
231 case GLSL_TYPE_FLOAT
:
232 for (unsigned c
= 0; c
< cols
; c
++) {
233 for (unsigned r
= 0; r
< rows
; r
++)
234 ret
->values
[c
].f32
[r
] = ir
->value
.f
[c
* rows
+ r
];
238 case GLSL_TYPE_DOUBLE
:
239 for (unsigned c
= 0; c
< cols
; c
++) {
240 for (unsigned r
= 0; r
< rows
; r
++)
241 ret
->values
[c
].f64
[r
] = ir
->value
.d
[c
* rows
+ r
];
245 case GLSL_TYPE_UINT64
:
246 /* Only float base types can be matrices. */
249 for (unsigned r
= 0; r
< rows
; r
++)
250 ret
->values
[0].u64
[r
] = ir
->value
.u64
[r
];
253 case GLSL_TYPE_INT64
:
254 /* Only float base types can be matrices. */
257 for (unsigned r
= 0; r
< rows
; r
++)
258 ret
->values
[0].i64
[r
] = ir
->value
.i64
[r
];
262 /* Only float base types can be matrices. */
265 for (unsigned r
= 0; r
< rows
; r
++)
266 ret
->values
[0].u32
[r
] = ir
->value
.b
[r
] ? NIR_TRUE
: NIR_FALSE
;
270 case GLSL_TYPE_STRUCT
:
271 case GLSL_TYPE_ARRAY
:
272 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
274 ret
->num_elements
= ir
->type
->length
;
276 for (i
= 0; i
< ir
->type
->length
; i
++)
277 ret
->elements
[i
] = constant_copy(ir
->const_elements
[i
], mem_ctx
);
281 unreachable("not reached");
288 nir_visitor::visit(ir_variable
*ir
)
290 /* TODO: In future we should switch to using the NIR lowering pass but for
291 * now just ignore these variables as GLSL IR should have lowered them.
292 * Anything remaining are just dead vars that weren't cleaned up.
294 if (ir
->data
.mode
== ir_var_shader_shared
)
297 nir_variable
*var
= rzalloc(shader
, nir_variable
);
298 var
->type
= ir
->type
;
299 var
->name
= ralloc_strdup(var
, ir
->name
);
301 var
->data
.always_active_io
= ir
->data
.always_active_io
;
302 var
->data
.read_only
= ir
->data
.read_only
;
303 var
->data
.centroid
= ir
->data
.centroid
;
304 var
->data
.sample
= ir
->data
.sample
;
305 var
->data
.patch
= ir
->data
.patch
;
306 var
->data
.invariant
= ir
->data
.invariant
;
307 var
->data
.location
= ir
->data
.location
;
308 var
->data
.stream
= ir
->data
.stream
;
309 var
->data
.compact
= false;
311 switch(ir
->data
.mode
) {
313 case ir_var_temporary
:
315 var
->data
.mode
= nir_var_global
;
317 var
->data
.mode
= nir_var_local
;
320 case ir_var_function_in
:
321 case ir_var_function_out
:
322 case ir_var_function_inout
:
323 case ir_var_const_in
:
324 var
->data
.mode
= nir_var_local
;
327 case ir_var_shader_in
:
328 if (shader
->info
.stage
== MESA_SHADER_FRAGMENT
&&
329 ir
->data
.location
== VARYING_SLOT_FACE
) {
330 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
331 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
332 var
->data
.mode
= nir_var_system_value
;
333 } else if (shader
->info
.stage
== MESA_SHADER_GEOMETRY
&&
334 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
335 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
336 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
337 var
->data
.mode
= nir_var_system_value
;
339 var
->data
.mode
= nir_var_shader_in
;
341 if (shader
->info
.stage
== MESA_SHADER_TESS_EVAL
&&
342 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
343 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
344 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
348 /* Mark all the locations that require two slots */
349 if (shader
->info
.stage
== MESA_SHADER_VERTEX
&&
350 glsl_type_is_dual_slot(glsl_without_array(var
->type
))) {
351 for (unsigned i
= 0; i
< glsl_count_attribute_slots(var
->type
, true); i
++) {
352 uint64_t bitfield
= BITFIELD64_BIT(var
->data
.location
+ i
);
353 shader
->info
.vs
.double_inputs
|= bitfield
;
358 case ir_var_shader_out
:
359 var
->data
.mode
= nir_var_shader_out
;
360 if (shader
->info
.stage
== MESA_SHADER_TESS_CTRL
&&
361 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
362 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
363 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
368 var
->data
.mode
= nir_var_uniform
;
371 case ir_var_shader_storage
:
372 var
->data
.mode
= nir_var_shader_storage
;
375 case ir_var_system_value
:
376 var
->data
.mode
= nir_var_system_value
;
380 unreachable("not reached");
383 var
->data
.interpolation
= ir
->data
.interpolation
;
384 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
385 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
386 var
->data
.location_frac
= ir
->data
.location_frac
;
388 if (var
->data
.pixel_center_integer
) {
389 assert(shader
->info
.stage
== MESA_SHADER_FRAGMENT
);
390 shader
->info
.fs
.pixel_center_integer
= true;
393 switch (ir
->data
.depth_layout
) {
394 case ir_depth_layout_none
:
395 var
->data
.depth_layout
= nir_depth_layout_none
;
397 case ir_depth_layout_any
:
398 var
->data
.depth_layout
= nir_depth_layout_any
;
400 case ir_depth_layout_greater
:
401 var
->data
.depth_layout
= nir_depth_layout_greater
;
403 case ir_depth_layout_less
:
404 var
->data
.depth_layout
= nir_depth_layout_less
;
406 case ir_depth_layout_unchanged
:
407 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
410 unreachable("not reached");
413 var
->data
.index
= ir
->data
.index
;
414 var
->data
.descriptor_set
= 0;
415 var
->data
.binding
= ir
->data
.binding
;
416 var
->data
.explicit_binding
= ir
->data
.explicit_binding
;
417 var
->data
.bindless
= ir
->data
.bindless
;
418 var
->data
.offset
= ir
->data
.offset
;
419 var
->data
.image
.read_only
= ir
->data
.memory_read_only
;
420 var
->data
.image
.write_only
= ir
->data
.memory_write_only
;
421 var
->data
.image
.coherent
= ir
->data
.memory_coherent
;
422 var
->data
.image
._volatile
= ir
->data
.memory_volatile
;
423 var
->data
.image
.restrict_flag
= ir
->data
.memory_restrict
;
424 var
->data
.image
.format
= ir
->data
.image_format
;
425 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
426 var
->data
.explicit_xfb_buffer
= ir
->data
.explicit_xfb_buffer
;
427 var
->data
.explicit_xfb_stride
= ir
->data
.explicit_xfb_stride
;
428 var
->data
.xfb_buffer
= ir
->data
.xfb_buffer
;
429 var
->data
.xfb_stride
= ir
->data
.xfb_stride
;
431 var
->num_state_slots
= ir
->get_num_state_slots();
432 if (var
->num_state_slots
> 0) {
433 var
->state_slots
= rzalloc_array(var
, nir_state_slot
,
434 var
->num_state_slots
);
436 ir_state_slot
*state_slots
= ir
->get_state_slots();
437 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
438 for (unsigned j
= 0; j
< 5; j
++)
439 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
440 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
443 var
->state_slots
= NULL
;
446 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
448 var
->interface_type
= ir
->get_interface_type();
450 if (var
->data
.mode
== nir_var_local
)
451 nir_function_impl_add_variable(impl
, var
);
453 nir_shader_add_variable(shader
, var
);
455 _mesa_hash_table_insert(var_table
, ir
, var
);
460 nir_function_visitor::visit_enter(ir_function
*ir
)
462 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
463 visitor
->create_function(sig
);
465 return visit_continue_with_parent
;
469 nir_visitor::create_function(ir_function_signature
*ir
)
471 if (ir
->is_intrinsic())
474 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
476 assert(ir
->parameters
.is_empty());
477 assert(ir
->return_type
== glsl_type::void_type
);
479 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
483 nir_visitor::visit(ir_function
*ir
)
485 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
490 nir_visitor::visit(ir_function_signature
*ir
)
492 if (ir
->is_intrinsic())
495 struct hash_entry
*entry
=
496 _mesa_hash_table_search(this->overload_table
, ir
);
499 nir_function
*func
= (nir_function
*) entry
->data
;
501 if (ir
->is_defined
) {
502 nir_function_impl
*impl
= nir_function_impl_create(func
);
505 assert(strcmp(func
->name
, "main") == 0);
506 assert(ir
->parameters
.is_empty());
508 this->is_global
= false;
510 nir_builder_init(&b
, impl
);
511 b
.cursor
= nir_after_cf_list(&impl
->body
);
512 visit_exec_list(&ir
->body
, this);
514 this->is_global
= true;
521 nir_visitor::visit(ir_loop
*ir
)
524 visit_exec_list(&ir
->body_instructions
, this);
525 nir_pop_loop(&b
, NULL
);
529 nir_visitor::visit(ir_if
*ir
)
531 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
532 visit_exec_list(&ir
->then_instructions
, this);
533 nir_push_else(&b
, NULL
);
534 visit_exec_list(&ir
->else_instructions
, this);
535 nir_pop_if(&b
, NULL
);
539 nir_visitor::visit(ir_discard
*ir
)
542 * discards aren't treated as control flow, because before we lower them
543 * they can appear anywhere in the shader and the stuff after them may still
544 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
545 * discards will be immediately followed by a return.
548 nir_intrinsic_instr
*discard
;
550 discard
= nir_intrinsic_instr_create(this->shader
,
551 nir_intrinsic_discard_if
);
553 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
555 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
558 nir_builder_instr_insert(&b
, &discard
->instr
);
562 nir_visitor::visit(ir_emit_vertex
*ir
)
564 nir_intrinsic_instr
*instr
=
565 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
566 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
567 nir_builder_instr_insert(&b
, &instr
->instr
);
571 nir_visitor::visit(ir_end_primitive
*ir
)
573 nir_intrinsic_instr
*instr
=
574 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
575 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
576 nir_builder_instr_insert(&b
, &instr
->instr
);
580 nir_visitor::visit(ir_loop_jump
*ir
)
584 case ir_loop_jump::jump_break
:
585 type
= nir_jump_break
;
587 case ir_loop_jump::jump_continue
:
588 type
= nir_jump_continue
;
591 unreachable("not reached");
594 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
595 nir_builder_instr_insert(&b
, &instr
->instr
);
599 nir_visitor::visit(ir_return
*ir
)
601 assert(ir
->value
== NULL
);
602 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
603 nir_builder_instr_insert(&b
, &instr
->instr
);
607 nir_visitor::visit(ir_call
*ir
)
609 if (ir
->callee
->is_intrinsic()) {
612 switch (ir
->callee
->intrinsic_id
) {
613 case ir_intrinsic_atomic_counter_read
:
614 op
= nir_intrinsic_atomic_counter_read_deref
;
616 case ir_intrinsic_atomic_counter_increment
:
617 op
= nir_intrinsic_atomic_counter_inc_deref
;
619 case ir_intrinsic_atomic_counter_predecrement
:
620 op
= nir_intrinsic_atomic_counter_pre_dec_deref
;
622 case ir_intrinsic_atomic_counter_add
:
623 op
= nir_intrinsic_atomic_counter_add_deref
;
625 case ir_intrinsic_atomic_counter_and
:
626 op
= nir_intrinsic_atomic_counter_and_deref
;
628 case ir_intrinsic_atomic_counter_or
:
629 op
= nir_intrinsic_atomic_counter_or_deref
;
631 case ir_intrinsic_atomic_counter_xor
:
632 op
= nir_intrinsic_atomic_counter_xor_deref
;
634 case ir_intrinsic_atomic_counter_min
:
635 op
= nir_intrinsic_atomic_counter_min_deref
;
637 case ir_intrinsic_atomic_counter_max
:
638 op
= nir_intrinsic_atomic_counter_max_deref
;
640 case ir_intrinsic_atomic_counter_exchange
:
641 op
= nir_intrinsic_atomic_counter_exchange_deref
;
643 case ir_intrinsic_atomic_counter_comp_swap
:
644 op
= nir_intrinsic_atomic_counter_comp_swap_deref
;
646 case ir_intrinsic_image_load
:
647 op
= nir_intrinsic_image_deref_load
;
649 case ir_intrinsic_image_store
:
650 op
= nir_intrinsic_image_deref_store
;
652 case ir_intrinsic_image_atomic_add
:
653 op
= ir
->return_deref
->type
->is_integer_32_64()
654 ? nir_intrinsic_image_deref_atomic_add
655 : nir_intrinsic_image_deref_atomic_fadd
;
657 case ir_intrinsic_image_atomic_min
:
658 op
= nir_intrinsic_image_deref_atomic_min
;
660 case ir_intrinsic_image_atomic_max
:
661 op
= nir_intrinsic_image_deref_atomic_max
;
663 case ir_intrinsic_image_atomic_and
:
664 op
= nir_intrinsic_image_deref_atomic_and
;
666 case ir_intrinsic_image_atomic_or
:
667 op
= nir_intrinsic_image_deref_atomic_or
;
669 case ir_intrinsic_image_atomic_xor
:
670 op
= nir_intrinsic_image_deref_atomic_xor
;
672 case ir_intrinsic_image_atomic_exchange
:
673 op
= nir_intrinsic_image_deref_atomic_exchange
;
675 case ir_intrinsic_image_atomic_comp_swap
:
676 op
= nir_intrinsic_image_deref_atomic_comp_swap
;
678 case ir_intrinsic_memory_barrier
:
679 op
= nir_intrinsic_memory_barrier
;
681 case ir_intrinsic_image_size
:
682 op
= nir_intrinsic_image_deref_size
;
684 case ir_intrinsic_image_samples
:
685 op
= nir_intrinsic_image_deref_samples
;
687 case ir_intrinsic_ssbo_store
:
688 op
= nir_intrinsic_store_ssbo
;
690 case ir_intrinsic_ssbo_load
:
691 op
= nir_intrinsic_load_ssbo
;
693 case ir_intrinsic_ssbo_atomic_add
:
694 op
= ir
->return_deref
->type
->is_integer_32_64()
695 ? nir_intrinsic_ssbo_atomic_add
: nir_intrinsic_ssbo_atomic_fadd
;
697 case ir_intrinsic_ssbo_atomic_and
:
698 op
= nir_intrinsic_ssbo_atomic_and
;
700 case ir_intrinsic_ssbo_atomic_or
:
701 op
= nir_intrinsic_ssbo_atomic_or
;
703 case ir_intrinsic_ssbo_atomic_xor
:
704 op
= nir_intrinsic_ssbo_atomic_xor
;
706 case ir_intrinsic_ssbo_atomic_min
:
707 assert(ir
->return_deref
);
708 if (ir
->return_deref
->type
== glsl_type::int_type
)
709 op
= nir_intrinsic_ssbo_atomic_imin
;
710 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
711 op
= nir_intrinsic_ssbo_atomic_umin
;
712 else if (ir
->return_deref
->type
== glsl_type::float_type
)
713 op
= nir_intrinsic_ssbo_atomic_fmin
;
715 unreachable("Invalid type");
717 case ir_intrinsic_ssbo_atomic_max
:
718 assert(ir
->return_deref
);
719 if (ir
->return_deref
->type
== glsl_type::int_type
)
720 op
= nir_intrinsic_ssbo_atomic_imax
;
721 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
722 op
= nir_intrinsic_ssbo_atomic_umax
;
723 else if (ir
->return_deref
->type
== glsl_type::float_type
)
724 op
= nir_intrinsic_ssbo_atomic_fmax
;
726 unreachable("Invalid type");
728 case ir_intrinsic_ssbo_atomic_exchange
:
729 op
= nir_intrinsic_ssbo_atomic_exchange
;
731 case ir_intrinsic_ssbo_atomic_comp_swap
:
732 op
= ir
->return_deref
->type
->is_integer_32_64()
733 ? nir_intrinsic_ssbo_atomic_comp_swap
734 : nir_intrinsic_ssbo_atomic_fcomp_swap
;
736 case ir_intrinsic_shader_clock
:
737 op
= nir_intrinsic_shader_clock
;
739 case ir_intrinsic_begin_invocation_interlock
:
740 op
= nir_intrinsic_begin_invocation_interlock
;
742 case ir_intrinsic_end_invocation_interlock
:
743 op
= nir_intrinsic_end_invocation_interlock
;
745 case ir_intrinsic_group_memory_barrier
:
746 op
= nir_intrinsic_group_memory_barrier
;
748 case ir_intrinsic_memory_barrier_atomic_counter
:
749 op
= nir_intrinsic_memory_barrier_atomic_counter
;
751 case ir_intrinsic_memory_barrier_buffer
:
752 op
= nir_intrinsic_memory_barrier_buffer
;
754 case ir_intrinsic_memory_barrier_image
:
755 op
= nir_intrinsic_memory_barrier_image
;
757 case ir_intrinsic_memory_barrier_shared
:
758 op
= nir_intrinsic_memory_barrier_shared
;
760 case ir_intrinsic_shared_load
:
761 op
= nir_intrinsic_load_shared
;
763 case ir_intrinsic_shared_store
:
764 op
= nir_intrinsic_store_shared
;
766 case ir_intrinsic_shared_atomic_add
:
767 op
= ir
->return_deref
->type
->is_integer_32_64()
768 ? nir_intrinsic_shared_atomic_add
769 : nir_intrinsic_shared_atomic_fadd
;
771 case ir_intrinsic_shared_atomic_and
:
772 op
= nir_intrinsic_shared_atomic_and
;
774 case ir_intrinsic_shared_atomic_or
:
775 op
= nir_intrinsic_shared_atomic_or
;
777 case ir_intrinsic_shared_atomic_xor
:
778 op
= nir_intrinsic_shared_atomic_xor
;
780 case ir_intrinsic_shared_atomic_min
:
781 assert(ir
->return_deref
);
782 if (ir
->return_deref
->type
== glsl_type::int_type
)
783 op
= nir_intrinsic_shared_atomic_imin
;
784 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
785 op
= nir_intrinsic_shared_atomic_umin
;
786 else if (ir
->return_deref
->type
== glsl_type::float_type
)
787 op
= nir_intrinsic_shared_atomic_fmin
;
789 unreachable("Invalid type");
791 case ir_intrinsic_shared_atomic_max
:
792 assert(ir
->return_deref
);
793 if (ir
->return_deref
->type
== glsl_type::int_type
)
794 op
= nir_intrinsic_shared_atomic_imax
;
795 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
796 op
= nir_intrinsic_shared_atomic_umax
;
797 else if (ir
->return_deref
->type
== glsl_type::float_type
)
798 op
= nir_intrinsic_shared_atomic_fmax
;
800 unreachable("Invalid type");
802 case ir_intrinsic_shared_atomic_exchange
:
803 op
= nir_intrinsic_shared_atomic_exchange
;
805 case ir_intrinsic_shared_atomic_comp_swap
:
806 op
= ir
->return_deref
->type
->is_integer_32_64()
807 ? nir_intrinsic_shared_atomic_comp_swap
808 : nir_intrinsic_shared_atomic_fcomp_swap
;
810 case ir_intrinsic_vote_any
:
811 op
= nir_intrinsic_vote_any
;
813 case ir_intrinsic_vote_all
:
814 op
= nir_intrinsic_vote_all
;
816 case ir_intrinsic_vote_eq
:
817 op
= nir_intrinsic_vote_ieq
;
819 case ir_intrinsic_ballot
:
820 op
= nir_intrinsic_ballot
;
822 case ir_intrinsic_read_invocation
:
823 op
= nir_intrinsic_read_invocation
;
825 case ir_intrinsic_read_first_invocation
:
826 op
= nir_intrinsic_read_first_invocation
;
829 unreachable("not reached");
832 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
833 nir_dest
*dest
= &instr
->dest
;
836 case nir_intrinsic_atomic_counter_read_deref
:
837 case nir_intrinsic_atomic_counter_inc_deref
:
838 case nir_intrinsic_atomic_counter_pre_dec_deref
:
839 case nir_intrinsic_atomic_counter_add_deref
:
840 case nir_intrinsic_atomic_counter_min_deref
:
841 case nir_intrinsic_atomic_counter_max_deref
:
842 case nir_intrinsic_atomic_counter_and_deref
:
843 case nir_intrinsic_atomic_counter_or_deref
:
844 case nir_intrinsic_atomic_counter_xor_deref
:
845 case nir_intrinsic_atomic_counter_exchange_deref
:
846 case nir_intrinsic_atomic_counter_comp_swap_deref
: {
847 /* Set the counter variable dereference. */
848 exec_node
*param
= ir
->actual_parameters
.get_head();
849 ir_dereference
*counter
= (ir_dereference
*)param
;
851 instr
->src
[0] = nir_src_for_ssa(&evaluate_deref(counter
)->dest
.ssa
);
852 param
= param
->get_next();
854 /* Set the intrinsic destination. */
855 if (ir
->return_deref
) {
856 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
859 /* Set the intrinsic parameters. */
860 if (!param
->is_tail_sentinel()) {
862 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
863 param
= param
->get_next();
866 if (!param
->is_tail_sentinel()) {
868 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
869 param
= param
->get_next();
872 nir_builder_instr_insert(&b
, &instr
->instr
);
875 case nir_intrinsic_image_deref_load
:
876 case nir_intrinsic_image_deref_store
:
877 case nir_intrinsic_image_deref_atomic_add
:
878 case nir_intrinsic_image_deref_atomic_min
:
879 case nir_intrinsic_image_deref_atomic_max
:
880 case nir_intrinsic_image_deref_atomic_and
:
881 case nir_intrinsic_image_deref_atomic_or
:
882 case nir_intrinsic_image_deref_atomic_xor
:
883 case nir_intrinsic_image_deref_atomic_exchange
:
884 case nir_intrinsic_image_deref_atomic_comp_swap
:
885 case nir_intrinsic_image_deref_atomic_fadd
:
886 case nir_intrinsic_image_deref_samples
:
887 case nir_intrinsic_image_deref_size
: {
888 nir_ssa_undef_instr
*instr_undef
=
889 nir_ssa_undef_instr_create(shader
, 1, 32);
890 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
892 /* Set the image variable dereference. */
893 exec_node
*param
= ir
->actual_parameters
.get_head();
894 ir_dereference
*image
= (ir_dereference
*)param
;
895 const glsl_type
*type
=
896 image
->variable_referenced()->type
->without_array();
898 instr
->src
[0] = nir_src_for_ssa(&evaluate_deref(image
)->dest
.ssa
);
899 param
= param
->get_next();
901 /* Set the intrinsic destination. */
902 if (ir
->return_deref
) {
903 unsigned num_components
= ir
->return_deref
->type
->vector_elements
;
904 if (instr
->intrinsic
== nir_intrinsic_image_deref_size
)
905 instr
->num_components
= num_components
;
906 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
907 num_components
, 32, NULL
);
910 if (op
== nir_intrinsic_image_deref_size
||
911 op
== nir_intrinsic_image_deref_samples
) {
912 nir_builder_instr_insert(&b
, &instr
->instr
);
916 /* Set the address argument, extending the coordinate vector to four
919 nir_ssa_def
*src_addr
=
920 evaluate_rvalue((ir_dereference
*)param
);
921 nir_ssa_def
*srcs
[4];
923 for (int i
= 0; i
< 4; i
++) {
924 if (i
< type
->coordinate_components())
925 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
927 srcs
[i
] = &instr_undef
->def
;
930 instr
->src
[1] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
931 param
= param
->get_next();
933 /* Set the sample argument, which is undefined for single-sample
936 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
938 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
939 param
= param
->get_next();
941 instr
->src
[2] = nir_src_for_ssa(&instr_undef
->def
);
944 /* Set the intrinsic parameters. */
945 if (!param
->is_tail_sentinel()) {
947 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
948 param
= param
->get_next();
951 if (!param
->is_tail_sentinel()) {
953 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
954 param
= param
->get_next();
956 nir_builder_instr_insert(&b
, &instr
->instr
);
959 case nir_intrinsic_memory_barrier
:
960 case nir_intrinsic_group_memory_barrier
:
961 case nir_intrinsic_memory_barrier_atomic_counter
:
962 case nir_intrinsic_memory_barrier_buffer
:
963 case nir_intrinsic_memory_barrier_image
:
964 case nir_intrinsic_memory_barrier_shared
:
965 nir_builder_instr_insert(&b
, &instr
->instr
);
967 case nir_intrinsic_shader_clock
:
968 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 2, 32, NULL
);
969 instr
->num_components
= 2;
970 nir_builder_instr_insert(&b
, &instr
->instr
);
972 case nir_intrinsic_begin_invocation_interlock
:
973 nir_builder_instr_insert(&b
, &instr
->instr
);
975 case nir_intrinsic_end_invocation_interlock
:
976 nir_builder_instr_insert(&b
, &instr
->instr
);
978 case nir_intrinsic_store_ssbo
: {
979 exec_node
*param
= ir
->actual_parameters
.get_head();
980 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
982 param
= param
->get_next();
983 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
985 param
= param
->get_next();
986 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
988 param
= param
->get_next();
989 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
992 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
993 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
994 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
995 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
996 instr
->num_components
= val
->type
->vector_elements
;
998 nir_builder_instr_insert(&b
, &instr
->instr
);
1001 case nir_intrinsic_load_ssbo
: {
1002 exec_node
*param
= ir
->actual_parameters
.get_head();
1003 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
1005 param
= param
->get_next();
1006 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1008 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
1009 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1011 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1012 instr
->num_components
= type
->vector_elements
;
1014 /* Setup destination register */
1015 unsigned bit_size
= glsl_get_bit_size(type
);
1016 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1017 type
->vector_elements
, bit_size
, NULL
);
1019 /* Insert the created nir instruction now since in the case of boolean
1020 * result we will need to emit another instruction after it
1022 nir_builder_instr_insert(&b
, &instr
->instr
);
1025 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
1026 * consider a true boolean to be ~0. Fix this up with a != 0
1029 if (type
->is_boolean()) {
1030 nir_alu_instr
*load_ssbo_compare
=
1031 nir_alu_instr_create(shader
, nir_op_ine
);
1032 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
1033 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
1034 load_ssbo_compare
->src
[1].src
=
1035 nir_src_for_ssa(nir_imm_int(&b
, 0));
1036 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
1037 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
1038 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
1039 &load_ssbo_compare
->dest
.dest
,
1040 type
->vector_elements
, bit_size
, NULL
);
1041 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
1042 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
1043 dest
= &load_ssbo_compare
->dest
.dest
;
1047 case nir_intrinsic_ssbo_atomic_add
:
1048 case nir_intrinsic_ssbo_atomic_imin
:
1049 case nir_intrinsic_ssbo_atomic_umin
:
1050 case nir_intrinsic_ssbo_atomic_imax
:
1051 case nir_intrinsic_ssbo_atomic_umax
:
1052 case nir_intrinsic_ssbo_atomic_and
:
1053 case nir_intrinsic_ssbo_atomic_or
:
1054 case nir_intrinsic_ssbo_atomic_xor
:
1055 case nir_intrinsic_ssbo_atomic_exchange
:
1056 case nir_intrinsic_ssbo_atomic_comp_swap
:
1057 case nir_intrinsic_ssbo_atomic_fadd
:
1058 case nir_intrinsic_ssbo_atomic_fmin
:
1059 case nir_intrinsic_ssbo_atomic_fmax
:
1060 case nir_intrinsic_ssbo_atomic_fcomp_swap
: {
1061 int param_count
= ir
->actual_parameters
.length();
1062 assert(param_count
== 3 || param_count
== 4);
1065 exec_node
*param
= ir
->actual_parameters
.get_head();
1066 ir_instruction
*inst
= (ir_instruction
*) param
;
1067 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1070 param
= param
->get_next();
1071 inst
= (ir_instruction
*) param
;
1072 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1074 /* data1 parameter (this is always present) */
1075 param
= param
->get_next();
1076 inst
= (ir_instruction
*) param
;
1077 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1079 /* data2 parameter (only with atomic_comp_swap) */
1080 if (param_count
== 4) {
1081 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
||
1082 op
== nir_intrinsic_ssbo_atomic_fcomp_swap
);
1083 param
= param
->get_next();
1084 inst
= (ir_instruction
*) param
;
1085 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1089 assert(ir
->return_deref
);
1090 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1091 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1092 nir_builder_instr_insert(&b
, &instr
->instr
);
1095 case nir_intrinsic_load_shared
: {
1096 exec_node
*param
= ir
->actual_parameters
.get_head();
1097 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1099 nir_intrinsic_set_base(instr
, 0);
1100 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1102 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1103 instr
->num_components
= type
->vector_elements
;
1105 /* Setup destination register */
1106 unsigned bit_size
= glsl_get_bit_size(type
);
1107 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1108 type
->vector_elements
, bit_size
, NULL
);
1110 nir_builder_instr_insert(&b
, &instr
->instr
);
1113 case nir_intrinsic_store_shared
: {
1114 exec_node
*param
= ir
->actual_parameters
.get_head();
1115 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1117 param
= param
->get_next();
1118 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1120 param
= param
->get_next();
1121 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1124 nir_intrinsic_set_base(instr
, 0);
1125 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1127 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1129 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1130 instr
->num_components
= val
->type
->vector_elements
;
1132 nir_builder_instr_insert(&b
, &instr
->instr
);
1135 case nir_intrinsic_shared_atomic_add
:
1136 case nir_intrinsic_shared_atomic_imin
:
1137 case nir_intrinsic_shared_atomic_umin
:
1138 case nir_intrinsic_shared_atomic_imax
:
1139 case nir_intrinsic_shared_atomic_umax
:
1140 case nir_intrinsic_shared_atomic_and
:
1141 case nir_intrinsic_shared_atomic_or
:
1142 case nir_intrinsic_shared_atomic_xor
:
1143 case nir_intrinsic_shared_atomic_exchange
:
1144 case nir_intrinsic_shared_atomic_comp_swap
:
1145 case nir_intrinsic_shared_atomic_fadd
:
1146 case nir_intrinsic_shared_atomic_fmin
:
1147 case nir_intrinsic_shared_atomic_fmax
:
1148 case nir_intrinsic_shared_atomic_fcomp_swap
: {
1149 int param_count
= ir
->actual_parameters
.length();
1150 assert(param_count
== 2 || param_count
== 3);
1153 exec_node
*param
= ir
->actual_parameters
.get_head();
1154 ir_instruction
*inst
= (ir_instruction
*) param
;
1155 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1157 /* data1 parameter (this is always present) */
1158 param
= param
->get_next();
1159 inst
= (ir_instruction
*) param
;
1160 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1162 /* data2 parameter (only with atomic_comp_swap) */
1163 if (param_count
== 3) {
1164 assert(op
== nir_intrinsic_shared_atomic_comp_swap
||
1165 op
== nir_intrinsic_shared_atomic_fcomp_swap
);
1166 param
= param
->get_next();
1167 inst
= (ir_instruction
*) param
;
1169 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1173 assert(ir
->return_deref
);
1174 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1175 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1176 ir
->return_deref
->type
->vector_elements
,
1178 nir_builder_instr_insert(&b
, &instr
->instr
);
1181 case nir_intrinsic_vote_any
:
1182 case nir_intrinsic_vote_all
:
1183 case nir_intrinsic_vote_ieq
: {
1184 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
1185 instr
->num_components
= 1;
1187 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1188 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1190 nir_builder_instr_insert(&b
, &instr
->instr
);
1194 case nir_intrinsic_ballot
: {
1195 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1196 ir
->return_deref
->type
->vector_elements
, 64, NULL
);
1197 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1199 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1200 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1202 nir_builder_instr_insert(&b
, &instr
->instr
);
1205 case nir_intrinsic_read_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 ir_rvalue
*invocation
= (ir_rvalue
*) ir
->actual_parameters
.get_head()->next
;
1214 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(invocation
));
1216 nir_builder_instr_insert(&b
, &instr
->instr
);
1219 case nir_intrinsic_read_first_invocation
: {
1220 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1221 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1222 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1224 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1225 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1227 nir_builder_instr_insert(&b
, &instr
->instr
);
1231 unreachable("not reached");
1234 if (ir
->return_deref
)
1235 nir_store_deref(&b
, evaluate_deref(ir
->return_deref
), &dest
->ssa
, ~0);
1240 unreachable("glsl_to_nir only handles function calls to intrinsics");
1244 nir_visitor::visit(ir_assignment
*ir
)
1246 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1248 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1249 ir
->lhs
->variable_referenced()->data
.precise
;
1251 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1252 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1253 if (ir
->condition
) {
1254 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1255 nir_copy_deref(&b
, evaluate_deref(ir
->lhs
), evaluate_deref(ir
->rhs
));
1256 nir_pop_if(&b
, NULL
);
1258 nir_copy_deref(&b
, evaluate_deref(ir
->lhs
), evaluate_deref(ir
->rhs
));
1263 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1265 ir
->lhs
->accept(this);
1266 nir_deref_instr
*lhs_deref
= this->deref
;
1267 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1269 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1270 /* GLSL IR will give us the input to the write-masked assignment in a
1271 * single packed vector. So, for example, if the writemask is xzw, then
1272 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1276 unsigned component
= 0;
1277 for (unsigned i
= 0; i
< 4; i
++) {
1278 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1280 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1283 if (ir
->condition
) {
1284 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1285 nir_store_deref(&b
, lhs_deref
, src
, ir
->write_mask
);
1286 nir_pop_if(&b
, NULL
);
1288 nir_store_deref(&b
, lhs_deref
, src
, ir
->write_mask
);
1293 * Given an instruction, returns a pointer to its destination or NULL if there
1294 * is no destination.
1296 * Note that this only handles instructions we generate at this level.
1299 get_instr_dest(nir_instr
*instr
)
1301 nir_alu_instr
*alu_instr
;
1302 nir_intrinsic_instr
*intrinsic_instr
;
1303 nir_tex_instr
*tex_instr
;
1305 switch (instr
->type
) {
1306 case nir_instr_type_alu
:
1307 alu_instr
= nir_instr_as_alu(instr
);
1308 return &alu_instr
->dest
.dest
;
1310 case nir_instr_type_intrinsic
:
1311 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1312 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1313 return &intrinsic_instr
->dest
;
1317 case nir_instr_type_tex
:
1318 tex_instr
= nir_instr_as_tex(instr
);
1319 return &tex_instr
->dest
;
1322 unreachable("not reached");
1329 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1332 nir_dest
*dest
= get_instr_dest(instr
);
1335 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1337 nir_builder_instr_insert(&b
, instr
);
1340 assert(dest
->is_ssa
);
1341 this->result
= &dest
->ssa
;
1346 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1349 if (ir
->as_dereference() || ir
->as_constant()) {
1351 * A dereference is being used on the right hand side, which means we
1352 * must emit a variable load.
1355 this->result
= nir_load_deref(&b
, this->deref
);
1358 return this->result
;
1362 type_is_float(glsl_base_type type
)
1364 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
||
1365 type
== GLSL_TYPE_FLOAT16
;
1369 type_is_signed(glsl_base_type type
)
1371 return type
== GLSL_TYPE_INT
|| type
== GLSL_TYPE_INT64
||
1372 type
== GLSL_TYPE_INT16
;
1376 nir_visitor::visit(ir_expression
*ir
)
1378 /* Some special cases */
1379 switch (ir
->operation
) {
1380 case ir_binop_ubo_load
: {
1381 nir_intrinsic_instr
*load
=
1382 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1383 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1384 load
->num_components
= ir
->type
->vector_elements
;
1385 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1386 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1387 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1390 * In UBO's, a true boolean value is any non-zero value, but we consider
1391 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1394 if (ir
->type
->is_boolean())
1395 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1400 case ir_unop_interpolate_at_centroid
:
1401 case ir_binop_interpolate_at_offset
:
1402 case ir_binop_interpolate_at_sample
: {
1403 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1404 ir_swizzle
*swizzle
= NULL
;
1406 /* the api does not allow a swizzle here, but the varying packing code
1407 * may have pushed one into here.
1409 swizzle
= ir
->operands
[0]->as_swizzle();
1411 deref
= swizzle
->val
->as_dereference();
1415 deref
->accept(this);
1417 nir_intrinsic_op op
;
1418 if (this->deref
->mode
== nir_var_shader_in
) {
1419 switch (ir
->operation
) {
1420 case ir_unop_interpolate_at_centroid
:
1421 op
= nir_intrinsic_interp_deref_at_centroid
;
1423 case ir_binop_interpolate_at_offset
:
1424 op
= nir_intrinsic_interp_deref_at_offset
;
1426 case ir_binop_interpolate_at_sample
:
1427 op
= nir_intrinsic_interp_deref_at_sample
;
1430 unreachable("Invalid interpolation intrinsic");
1433 /* This case can happen if the vertex shader does not write the
1434 * given varying. In this case, the linker will lower it to a
1435 * global variable. Since interpolating a variable makes no
1436 * sense, we'll just turn it into a load which will probably
1437 * eventually end up as an SSA definition.
1439 assert(this->deref
->mode
== nir_var_global
);
1440 op
= nir_intrinsic_load_deref
;
1443 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1444 intrin
->num_components
= deref
->type
->vector_elements
;
1445 intrin
->src
[0] = nir_src_for_ssa(&this->deref
->dest
.ssa
);
1447 if (intrin
->intrinsic
== nir_intrinsic_interp_deref_at_offset
||
1448 intrin
->intrinsic
== nir_intrinsic_interp_deref_at_sample
)
1449 intrin
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1451 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1452 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1455 unsigned swiz
[4] = {
1456 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1459 result
= nir_swizzle(&b
, result
, swiz
,
1460 swizzle
->type
->vector_elements
, false);
1470 nir_ssa_def
*srcs
[4];
1471 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1472 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1474 glsl_base_type types
[4];
1475 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1477 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1479 types
[i
] = GLSL_TYPE_FLOAT
;
1481 glsl_base_type out_type
;
1483 out_type
= ir
->type
->base_type
;
1485 out_type
= GLSL_TYPE_FLOAT
;
1487 switch (ir
->operation
) {
1488 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1489 case ir_unop_logic_not
:
1490 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1493 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1494 : nir_ineg(&b
, srcs
[0]);
1497 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1498 : nir_iabs(&b
, srcs
[0]);
1500 case ir_unop_saturate
:
1501 assert(type_is_float(types
[0]));
1502 result
= nir_fsat(&b
, srcs
[0]);
1505 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1506 : nir_isign(&b
, srcs
[0]);
1508 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1509 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1510 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1511 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1512 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1513 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1514 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1516 result
= supports_ints
? nir_i2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1519 result
= supports_ints
? nir_u2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1522 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1556 case ir_unop_i642u64
:
1557 case ir_unop_u642i64
: {
1558 nir_alu_type src_type
= nir_get_nir_type_for_glsl_base_type(types
[0]);
1559 nir_alu_type dst_type
= nir_get_nir_type_for_glsl_base_type(out_type
);
1560 result
= nir_build_alu(&b
, nir_type_conversion_op(src_type
, dst_type
,
1561 nir_rounding_mode_undef
),
1562 srcs
[0], NULL
, NULL
, NULL
);
1563 /* b2i and b2f don't have fixed bit-size versions so the builder will
1564 * just assume 32 and we have to fix it up here.
1566 result
->bit_size
= nir_alu_type_get_type_size(dst_type
);
1570 case ir_unop_bitcast_i2f
:
1571 case ir_unop_bitcast_f2i
:
1572 case ir_unop_bitcast_u2f
:
1573 case ir_unop_bitcast_f2u
:
1574 case ir_unop_bitcast_i642d
:
1575 case ir_unop_bitcast_d2i64
:
1576 case ir_unop_bitcast_u642d
:
1577 case ir_unop_bitcast_d2u64
:
1578 case ir_unop_subroutine_to_int
:
1580 result
= nir_imov(&b
, srcs
[0]);
1582 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1583 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1584 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1585 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1586 case ir_unop_frexp_exp
: result
= nir_frexp_exp(&b
, srcs
[0]); break;
1587 case ir_unop_frexp_sig
: result
= nir_frexp_sig(&b
, srcs
[0]); break;
1588 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1589 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1590 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1591 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1592 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1593 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1594 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1595 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1596 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1597 case ir_unop_pack_snorm_2x16
:
1598 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1600 case ir_unop_pack_snorm_4x8
:
1601 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1603 case ir_unop_pack_unorm_2x16
:
1604 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1606 case ir_unop_pack_unorm_4x8
:
1607 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1609 case ir_unop_pack_half_2x16
:
1610 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1612 case ir_unop_unpack_snorm_2x16
:
1613 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1615 case ir_unop_unpack_snorm_4x8
:
1616 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1618 case ir_unop_unpack_unorm_2x16
:
1619 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1621 case ir_unop_unpack_unorm_4x8
:
1622 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1624 case ir_unop_unpack_half_2x16
:
1625 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1627 case ir_unop_pack_sampler_2x32
:
1628 case ir_unop_pack_image_2x32
:
1629 case ir_unop_pack_double_2x32
:
1630 case ir_unop_pack_int_2x32
:
1631 case ir_unop_pack_uint_2x32
:
1632 result
= nir_pack_64_2x32(&b
, srcs
[0]);
1634 case ir_unop_unpack_sampler_2x32
:
1635 case ir_unop_unpack_image_2x32
:
1636 case ir_unop_unpack_double_2x32
:
1637 case ir_unop_unpack_int_2x32
:
1638 case ir_unop_unpack_uint_2x32
:
1639 result
= nir_unpack_64_2x32(&b
, srcs
[0]);
1641 case ir_unop_bitfield_reverse
:
1642 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1644 case ir_unop_bit_count
:
1645 result
= nir_bit_count(&b
, srcs
[0]);
1647 case ir_unop_find_msb
:
1649 case GLSL_TYPE_UINT
:
1650 result
= nir_ufind_msb(&b
, srcs
[0]);
1653 result
= nir_ifind_msb(&b
, srcs
[0]);
1656 unreachable("Invalid type for findMSB()");
1659 case ir_unop_find_lsb
:
1660 result
= nir_find_lsb(&b
, srcs
[0]);
1664 switch (ir
->type
->vector_elements
) {
1666 switch (ir
->operands
[0]->type
->vector_elements
) {
1667 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1668 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1669 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1670 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1671 default: unreachable("not reached");
1675 switch (ir
->operands
[0]->type
->vector_elements
) {
1676 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1677 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1678 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1679 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1680 default: unreachable("not reached");
1684 switch (ir
->operands
[0]->type
->vector_elements
) {
1685 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1686 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1687 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1688 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1689 default: unreachable("not reached");
1693 switch (ir
->operands
[0]->type
->vector_elements
) {
1694 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1695 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1696 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1697 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1698 default: unreachable("not reached");
1702 unreachable("not reached");
1705 case ir_unop_get_buffer_size
: {
1706 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1708 nir_intrinsic_get_buffer_size
);
1709 load
->num_components
= ir
->type
->vector_elements
;
1710 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1711 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1712 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1717 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1718 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1721 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1722 : nir_isub(&b
, srcs
[0], srcs
[1]);
1725 result
= type_is_float(out_type
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1726 : nir_imul(&b
, srcs
[0], srcs
[1]);
1729 if (type_is_float(out_type
))
1730 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1731 else if (type_is_signed(out_type
))
1732 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1734 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1737 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1738 : nir_umod(&b
, srcs
[0], srcs
[1]);
1741 if (type_is_float(out_type
))
1742 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1743 else if (type_is_signed(out_type
))
1744 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1746 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1749 if (type_is_float(out_type
))
1750 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1751 else if (type_is_signed(out_type
))
1752 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1754 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1756 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1757 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1758 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1759 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1760 case ir_binop_logic_and
:
1761 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1762 : nir_fand(&b
, srcs
[0], srcs
[1]);
1764 case ir_binop_logic_or
:
1765 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1766 : nir_for(&b
, srcs
[0], srcs
[1]);
1768 case ir_binop_logic_xor
:
1769 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1770 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1772 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1773 case ir_binop_rshift
:
1774 result
= (type_is_signed(out_type
)) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1775 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1777 case ir_binop_imul_high
:
1778 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1779 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1781 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1782 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1784 if (supports_ints
) {
1785 if (type_is_float(types
[0]))
1786 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1787 else if (type_is_signed(types
[0]))
1788 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1790 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1792 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1795 case ir_binop_gequal
:
1796 if (supports_ints
) {
1797 if (type_is_float(types
[0]))
1798 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1799 else if (type_is_signed(types
[0]))
1800 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1802 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1804 result
= nir_sge(&b
, srcs
[0], srcs
[1]);
1807 case ir_binop_equal
:
1808 if (supports_ints
) {
1809 if (type_is_float(types
[0]))
1810 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1812 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1814 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1817 case ir_binop_nequal
:
1818 if (supports_ints
) {
1819 if (type_is_float(types
[0]))
1820 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1822 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1824 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1827 case ir_binop_all_equal
:
1828 if (supports_ints
) {
1829 if (type_is_float(types
[0])) {
1830 switch (ir
->operands
[0]->type
->vector_elements
) {
1831 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1832 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1833 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1834 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1836 unreachable("not reached");
1839 switch (ir
->operands
[0]->type
->vector_elements
) {
1840 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1841 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1842 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1843 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1845 unreachable("not reached");
1849 switch (ir
->operands
[0]->type
->vector_elements
) {
1850 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1851 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1852 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1853 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1855 unreachable("not reached");
1859 case ir_binop_any_nequal
:
1860 if (supports_ints
) {
1861 if (type_is_float(types
[0])) {
1862 switch (ir
->operands
[0]->type
->vector_elements
) {
1863 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1864 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1865 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1866 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1868 unreachable("not reached");
1871 switch (ir
->operands
[0]->type
->vector_elements
) {
1872 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1873 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1874 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1875 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1877 unreachable("not reached");
1881 switch (ir
->operands
[0]->type
->vector_elements
) {
1882 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1883 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1884 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1885 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1887 unreachable("not reached");
1892 switch (ir
->operands
[0]->type
->vector_elements
) {
1893 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1894 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1895 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1897 unreachable("not reached");
1900 case ir_binop_vector_extract
: {
1901 result
= nir_channel(&b
, srcs
[0], 0);
1902 for (unsigned i
= 1; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1903 nir_ssa_def
*swizzled
= nir_channel(&b
, srcs
[0], i
);
1904 result
= nir_bcsel(&b
, nir_ieq(&b
, srcs
[1], nir_imm_int(&b
, i
)),
1910 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1912 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1915 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1919 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1921 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1923 case ir_triop_bitfield_extract
:
1924 result
= (out_type
== GLSL_TYPE_INT
) ?
1925 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1926 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1928 case ir_quadop_bitfield_insert
:
1929 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1931 case ir_quadop_vector
:
1932 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1936 unreachable("not reached");
1941 nir_visitor::visit(ir_swizzle
*ir
)
1943 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1944 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1945 ir
->type
->vector_elements
, !supports_ints
);
1949 nir_visitor::visit(ir_texture
*ir
)
1956 num_srcs
= 1; /* coordinate */
1961 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1962 num_srcs
= 2; /* coordinate, bias/lod */
1966 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1972 if (ir
->lod_info
.lod
!= NULL
)
1973 num_srcs
= 2; /* coordinate, lod */
1975 num_srcs
= 1; /* coordinate */
1979 op
= nir_texop_txf_ms
;
1980 num_srcs
= 2; /* coordinate, sample_index */
1985 if (ir
->lod_info
.lod
!= NULL
)
1986 num_srcs
= 1; /* lod */
1993 num_srcs
= 1; /* coordinate */
1998 num_srcs
= 1; /* coordinate */
2001 case ir_query_levels
:
2002 op
= nir_texop_query_levels
;
2006 case ir_texture_samples
:
2007 op
= nir_texop_texture_samples
;
2011 case ir_samples_identical
:
2012 op
= nir_texop_samples_identical
;
2013 num_srcs
= 1; /* coordinate */
2017 unreachable("not reached");
2020 if (ir
->projector
!= NULL
)
2022 if (ir
->shadow_comparator
!= NULL
)
2024 if (ir
->offset
!= NULL
)
2027 /* Add one for the texture deref */
2030 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
2033 instr
->sampler_dim
=
2034 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
2035 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
2036 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
2037 if (instr
->is_shadow
)
2038 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
2039 switch (ir
->type
->base_type
) {
2040 case GLSL_TYPE_FLOAT
:
2041 instr
->dest_type
= nir_type_float
;
2044 instr
->dest_type
= nir_type_int
;
2046 case GLSL_TYPE_BOOL
:
2047 case GLSL_TYPE_UINT
:
2048 instr
->dest_type
= nir_type_uint
;
2051 unreachable("not reached");
2054 nir_deref_instr
*sampler_deref
= evaluate_deref(ir
->sampler
);
2055 instr
->src
[0].src
= nir_src_for_ssa(&sampler_deref
->dest
.ssa
);
2056 instr
->src
[0].src_type
= nir_tex_src_texture_deref
;
2057 instr
->src
[1].src
= nir_src_for_ssa(&sampler_deref
->dest
.ssa
);
2058 instr
->src
[1].src_type
= nir_tex_src_sampler_deref
;
2060 unsigned src_number
= 2;
2062 if (ir
->coordinate
!= NULL
) {
2063 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
2064 instr
->src
[src_number
].src
=
2065 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
2066 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2070 if (ir
->projector
!= NULL
) {
2071 instr
->src
[src_number
].src
=
2072 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
2073 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2077 if (ir
->shadow_comparator
!= NULL
) {
2078 instr
->src
[src_number
].src
=
2079 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparator
));
2080 instr
->src
[src_number
].src_type
= nir_tex_src_comparator
;
2084 if (ir
->offset
!= NULL
) {
2085 /* we don't support multiple offsets yet */
2086 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2088 instr
->src
[src_number
].src
=
2089 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
2090 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2096 instr
->src
[src_number
].src
=
2097 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
2098 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2105 if (ir
->lod_info
.lod
!= NULL
) {
2106 instr
->src
[src_number
].src
=
2107 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
2108 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2114 instr
->src
[src_number
].src
=
2115 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
2116 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2118 instr
->src
[src_number
].src
=
2119 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
2120 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2125 instr
->src
[src_number
].src
=
2126 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
2127 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2132 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2139 assert(src_number
== num_srcs
);
2141 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2142 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2146 nir_visitor::visit(ir_constant
*ir
)
2149 * We don't know if this variable is an array or struct that gets
2150 * dereferenced, so do the safe thing an make it a variable with a
2151 * constant initializer and return a dereference.
2155 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2156 var
->data
.read_only
= true;
2157 var
->constant_initializer
= constant_copy(ir
, var
);
2159 this->deref
= nir_build_deref_var(&b
, var
);
2163 nir_visitor::visit(ir_dereference_variable
*ir
)
2165 struct hash_entry
*entry
=
2166 _mesa_hash_table_search(this->var_table
, ir
->var
);
2168 nir_variable
*var
= (nir_variable
*) entry
->data
;
2170 this->deref
= nir_build_deref_var(&b
, var
);
2174 nir_visitor::visit(ir_dereference_record
*ir
)
2176 ir
->record
->accept(this);
2178 int field_index
= ir
->field_idx
;
2179 assert(field_index
>= 0);
2181 this->deref
= nir_build_deref_struct(&b
, this->deref
, field_index
);
2185 nir_visitor::visit(ir_dereference_array
*ir
)
2187 nir_ssa_def
*index
= evaluate_rvalue(ir
->array_index
);
2189 ir
->array
->accept(this);
2191 this->deref
= nir_build_deref_array(&b
, this->deref
, index
);
2195 nir_visitor::visit(ir_barrier
*)
2197 nir_intrinsic_instr
*instr
=
2198 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2199 nir_builder_instr_insert(&b
, &instr
->instr
);