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
;
713 unreachable("Invalid type");
715 case ir_intrinsic_ssbo_atomic_max
:
716 assert(ir
->return_deref
);
717 if (ir
->return_deref
->type
== glsl_type::int_type
)
718 op
= nir_intrinsic_ssbo_atomic_imax
;
719 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
720 op
= nir_intrinsic_ssbo_atomic_umax
;
722 unreachable("Invalid type");
724 case ir_intrinsic_ssbo_atomic_exchange
:
725 op
= nir_intrinsic_ssbo_atomic_exchange
;
727 case ir_intrinsic_ssbo_atomic_comp_swap
:
728 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
730 case ir_intrinsic_shader_clock
:
731 op
= nir_intrinsic_shader_clock
;
733 case ir_intrinsic_begin_invocation_interlock
:
734 op
= nir_intrinsic_begin_invocation_interlock
;
736 case ir_intrinsic_end_invocation_interlock
:
737 op
= nir_intrinsic_end_invocation_interlock
;
739 case ir_intrinsic_group_memory_barrier
:
740 op
= nir_intrinsic_group_memory_barrier
;
742 case ir_intrinsic_memory_barrier_atomic_counter
:
743 op
= nir_intrinsic_memory_barrier_atomic_counter
;
745 case ir_intrinsic_memory_barrier_buffer
:
746 op
= nir_intrinsic_memory_barrier_buffer
;
748 case ir_intrinsic_memory_barrier_image
:
749 op
= nir_intrinsic_memory_barrier_image
;
751 case ir_intrinsic_memory_barrier_shared
:
752 op
= nir_intrinsic_memory_barrier_shared
;
754 case ir_intrinsic_shared_load
:
755 op
= nir_intrinsic_load_shared
;
757 case ir_intrinsic_shared_store
:
758 op
= nir_intrinsic_store_shared
;
760 case ir_intrinsic_shared_atomic_add
:
761 op
= ir
->return_deref
->type
->is_integer_32_64()
762 ? nir_intrinsic_shared_atomic_add
763 : nir_intrinsic_shared_atomic_fadd
;
765 case ir_intrinsic_shared_atomic_and
:
766 op
= nir_intrinsic_shared_atomic_and
;
768 case ir_intrinsic_shared_atomic_or
:
769 op
= nir_intrinsic_shared_atomic_or
;
771 case ir_intrinsic_shared_atomic_xor
:
772 op
= nir_intrinsic_shared_atomic_xor
;
774 case ir_intrinsic_shared_atomic_min
:
775 assert(ir
->return_deref
);
776 if (ir
->return_deref
->type
== glsl_type::int_type
)
777 op
= nir_intrinsic_shared_atomic_imin
;
778 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
779 op
= nir_intrinsic_shared_atomic_umin
;
781 unreachable("Invalid type");
783 case ir_intrinsic_shared_atomic_max
:
784 assert(ir
->return_deref
);
785 if (ir
->return_deref
->type
== glsl_type::int_type
)
786 op
= nir_intrinsic_shared_atomic_imax
;
787 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
788 op
= nir_intrinsic_shared_atomic_umax
;
790 unreachable("Invalid type");
792 case ir_intrinsic_shared_atomic_exchange
:
793 op
= nir_intrinsic_shared_atomic_exchange
;
795 case ir_intrinsic_shared_atomic_comp_swap
:
796 op
= nir_intrinsic_shared_atomic_comp_swap
;
798 case ir_intrinsic_vote_any
:
799 op
= nir_intrinsic_vote_any
;
801 case ir_intrinsic_vote_all
:
802 op
= nir_intrinsic_vote_all
;
804 case ir_intrinsic_vote_eq
:
805 op
= nir_intrinsic_vote_ieq
;
807 case ir_intrinsic_ballot
:
808 op
= nir_intrinsic_ballot
;
810 case ir_intrinsic_read_invocation
:
811 op
= nir_intrinsic_read_invocation
;
813 case ir_intrinsic_read_first_invocation
:
814 op
= nir_intrinsic_read_first_invocation
;
817 unreachable("not reached");
820 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
821 nir_dest
*dest
= &instr
->dest
;
824 case nir_intrinsic_atomic_counter_read_deref
:
825 case nir_intrinsic_atomic_counter_inc_deref
:
826 case nir_intrinsic_atomic_counter_pre_dec_deref
:
827 case nir_intrinsic_atomic_counter_add_deref
:
828 case nir_intrinsic_atomic_counter_min_deref
:
829 case nir_intrinsic_atomic_counter_max_deref
:
830 case nir_intrinsic_atomic_counter_and_deref
:
831 case nir_intrinsic_atomic_counter_or_deref
:
832 case nir_intrinsic_atomic_counter_xor_deref
:
833 case nir_intrinsic_atomic_counter_exchange_deref
:
834 case nir_intrinsic_atomic_counter_comp_swap_deref
: {
835 /* Set the counter variable dereference. */
836 exec_node
*param
= ir
->actual_parameters
.get_head();
837 ir_dereference
*counter
= (ir_dereference
*)param
;
839 instr
->src
[0] = nir_src_for_ssa(&evaluate_deref(counter
)->dest
.ssa
);
840 param
= param
->get_next();
842 /* Set the intrinsic destination. */
843 if (ir
->return_deref
) {
844 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
847 /* Set the intrinsic parameters. */
848 if (!param
->is_tail_sentinel()) {
850 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
851 param
= param
->get_next();
854 if (!param
->is_tail_sentinel()) {
856 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
857 param
= param
->get_next();
860 nir_builder_instr_insert(&b
, &instr
->instr
);
863 case nir_intrinsic_image_deref_load
:
864 case nir_intrinsic_image_deref_store
:
865 case nir_intrinsic_image_deref_atomic_add
:
866 case nir_intrinsic_image_deref_atomic_min
:
867 case nir_intrinsic_image_deref_atomic_max
:
868 case nir_intrinsic_image_deref_atomic_and
:
869 case nir_intrinsic_image_deref_atomic_or
:
870 case nir_intrinsic_image_deref_atomic_xor
:
871 case nir_intrinsic_image_deref_atomic_exchange
:
872 case nir_intrinsic_image_deref_atomic_comp_swap
:
873 case nir_intrinsic_image_deref_atomic_fadd
:
874 case nir_intrinsic_image_deref_samples
:
875 case nir_intrinsic_image_deref_size
: {
876 nir_ssa_undef_instr
*instr_undef
=
877 nir_ssa_undef_instr_create(shader
, 1, 32);
878 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
880 /* Set the image variable dereference. */
881 exec_node
*param
= ir
->actual_parameters
.get_head();
882 ir_dereference
*image
= (ir_dereference
*)param
;
883 const glsl_type
*type
=
884 image
->variable_referenced()->type
->without_array();
886 instr
->src
[0] = nir_src_for_ssa(&evaluate_deref(image
)->dest
.ssa
);
887 param
= param
->get_next();
889 /* Set the intrinsic destination. */
890 if (ir
->return_deref
) {
891 unsigned num_components
= ir
->return_deref
->type
->vector_elements
;
892 if (instr
->intrinsic
== nir_intrinsic_image_deref_size
)
893 instr
->num_components
= num_components
;
894 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
895 num_components
, 32, NULL
);
898 if (op
== nir_intrinsic_image_deref_size
||
899 op
== nir_intrinsic_image_deref_samples
) {
900 nir_builder_instr_insert(&b
, &instr
->instr
);
904 /* Set the address argument, extending the coordinate vector to four
907 nir_ssa_def
*src_addr
=
908 evaluate_rvalue((ir_dereference
*)param
);
909 nir_ssa_def
*srcs
[4];
911 for (int i
= 0; i
< 4; i
++) {
912 if (i
< type
->coordinate_components())
913 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
915 srcs
[i
] = &instr_undef
->def
;
918 instr
->src
[1] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
919 param
= param
->get_next();
921 /* Set the sample argument, which is undefined for single-sample
924 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
926 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
927 param
= param
->get_next();
929 instr
->src
[2] = nir_src_for_ssa(&instr_undef
->def
);
932 /* Set the intrinsic parameters. */
933 if (!param
->is_tail_sentinel()) {
935 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
936 param
= param
->get_next();
939 if (!param
->is_tail_sentinel()) {
941 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
942 param
= param
->get_next();
944 nir_builder_instr_insert(&b
, &instr
->instr
);
947 case nir_intrinsic_memory_barrier
:
948 case nir_intrinsic_group_memory_barrier
:
949 case nir_intrinsic_memory_barrier_atomic_counter
:
950 case nir_intrinsic_memory_barrier_buffer
:
951 case nir_intrinsic_memory_barrier_image
:
952 case nir_intrinsic_memory_barrier_shared
:
953 nir_builder_instr_insert(&b
, &instr
->instr
);
955 case nir_intrinsic_shader_clock
:
956 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 2, 32, NULL
);
957 instr
->num_components
= 2;
958 nir_builder_instr_insert(&b
, &instr
->instr
);
960 case nir_intrinsic_begin_invocation_interlock
:
961 nir_builder_instr_insert(&b
, &instr
->instr
);
963 case nir_intrinsic_end_invocation_interlock
:
964 nir_builder_instr_insert(&b
, &instr
->instr
);
966 case nir_intrinsic_store_ssbo
: {
967 exec_node
*param
= ir
->actual_parameters
.get_head();
968 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
970 param
= param
->get_next();
971 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
973 param
= param
->get_next();
974 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
976 param
= param
->get_next();
977 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
980 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
981 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
982 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
983 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
984 instr
->num_components
= val
->type
->vector_elements
;
986 nir_builder_instr_insert(&b
, &instr
->instr
);
989 case nir_intrinsic_load_ssbo
: {
990 exec_node
*param
= ir
->actual_parameters
.get_head();
991 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
993 param
= param
->get_next();
994 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
996 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
997 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
999 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1000 instr
->num_components
= type
->vector_elements
;
1002 /* Setup destination register */
1003 unsigned bit_size
= glsl_get_bit_size(type
);
1004 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1005 type
->vector_elements
, bit_size
, NULL
);
1007 /* Insert the created nir instruction now since in the case of boolean
1008 * result we will need to emit another instruction after it
1010 nir_builder_instr_insert(&b
, &instr
->instr
);
1013 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
1014 * consider a true boolean to be ~0. Fix this up with a != 0
1017 if (type
->is_boolean()) {
1018 nir_alu_instr
*load_ssbo_compare
=
1019 nir_alu_instr_create(shader
, nir_op_ine
);
1020 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
1021 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
1022 load_ssbo_compare
->src
[1].src
=
1023 nir_src_for_ssa(nir_imm_int(&b
, 0));
1024 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
1025 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
1026 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
1027 &load_ssbo_compare
->dest
.dest
,
1028 type
->vector_elements
, bit_size
, NULL
);
1029 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
1030 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
1031 dest
= &load_ssbo_compare
->dest
.dest
;
1035 case nir_intrinsic_ssbo_atomic_add
:
1036 case nir_intrinsic_ssbo_atomic_imin
:
1037 case nir_intrinsic_ssbo_atomic_umin
:
1038 case nir_intrinsic_ssbo_atomic_imax
:
1039 case nir_intrinsic_ssbo_atomic_umax
:
1040 case nir_intrinsic_ssbo_atomic_and
:
1041 case nir_intrinsic_ssbo_atomic_or
:
1042 case nir_intrinsic_ssbo_atomic_xor
:
1043 case nir_intrinsic_ssbo_atomic_exchange
:
1044 case nir_intrinsic_ssbo_atomic_comp_swap
:
1045 case nir_intrinsic_ssbo_atomic_fadd
: {
1046 int param_count
= ir
->actual_parameters
.length();
1047 assert(param_count
== 3 || param_count
== 4);
1050 exec_node
*param
= ir
->actual_parameters
.get_head();
1051 ir_instruction
*inst
= (ir_instruction
*) param
;
1052 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1055 param
= param
->get_next();
1056 inst
= (ir_instruction
*) param
;
1057 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1059 /* data1 parameter (this is always present) */
1060 param
= param
->get_next();
1061 inst
= (ir_instruction
*) param
;
1062 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1064 /* data2 parameter (only with atomic_comp_swap) */
1065 if (param_count
== 4) {
1066 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
1067 param
= param
->get_next();
1068 inst
= (ir_instruction
*) param
;
1069 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1073 assert(ir
->return_deref
);
1074 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1075 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1076 nir_builder_instr_insert(&b
, &instr
->instr
);
1079 case nir_intrinsic_load_shared
: {
1080 exec_node
*param
= ir
->actual_parameters
.get_head();
1081 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1083 nir_intrinsic_set_base(instr
, 0);
1084 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1086 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1087 instr
->num_components
= type
->vector_elements
;
1089 /* Setup destination register */
1090 unsigned bit_size
= glsl_get_bit_size(type
);
1091 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1092 type
->vector_elements
, bit_size
, NULL
);
1094 nir_builder_instr_insert(&b
, &instr
->instr
);
1097 case nir_intrinsic_store_shared
: {
1098 exec_node
*param
= ir
->actual_parameters
.get_head();
1099 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1101 param
= param
->get_next();
1102 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1104 param
= param
->get_next();
1105 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1108 nir_intrinsic_set_base(instr
, 0);
1109 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1111 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1113 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1114 instr
->num_components
= val
->type
->vector_elements
;
1116 nir_builder_instr_insert(&b
, &instr
->instr
);
1119 case nir_intrinsic_shared_atomic_add
:
1120 case nir_intrinsic_shared_atomic_imin
:
1121 case nir_intrinsic_shared_atomic_umin
:
1122 case nir_intrinsic_shared_atomic_imax
:
1123 case nir_intrinsic_shared_atomic_umax
:
1124 case nir_intrinsic_shared_atomic_and
:
1125 case nir_intrinsic_shared_atomic_or
:
1126 case nir_intrinsic_shared_atomic_xor
:
1127 case nir_intrinsic_shared_atomic_exchange
:
1128 case nir_intrinsic_shared_atomic_comp_swap
:
1129 case nir_intrinsic_shared_atomic_fadd
: {
1130 int param_count
= ir
->actual_parameters
.length();
1131 assert(param_count
== 2 || param_count
== 3);
1134 exec_node
*param
= ir
->actual_parameters
.get_head();
1135 ir_instruction
*inst
= (ir_instruction
*) param
;
1136 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1138 /* data1 parameter (this is always present) */
1139 param
= param
->get_next();
1140 inst
= (ir_instruction
*) param
;
1141 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1143 /* data2 parameter (only with atomic_comp_swap) */
1144 if (param_count
== 3) {
1145 assert(op
== nir_intrinsic_shared_atomic_comp_swap
);
1146 param
= param
->get_next();
1147 inst
= (ir_instruction
*) param
;
1149 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1153 assert(ir
->return_deref
);
1154 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1155 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1156 ir
->return_deref
->type
->vector_elements
,
1158 nir_builder_instr_insert(&b
, &instr
->instr
);
1161 case nir_intrinsic_vote_any
:
1162 case nir_intrinsic_vote_all
:
1163 case nir_intrinsic_vote_ieq
: {
1164 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
1165 instr
->num_components
= 1;
1167 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1168 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1170 nir_builder_instr_insert(&b
, &instr
->instr
);
1174 case nir_intrinsic_ballot
: {
1175 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1176 ir
->return_deref
->type
->vector_elements
, 64, NULL
);
1177 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1179 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1180 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1182 nir_builder_instr_insert(&b
, &instr
->instr
);
1185 case nir_intrinsic_read_invocation
: {
1186 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1187 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1188 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1190 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1191 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1193 ir_rvalue
*invocation
= (ir_rvalue
*) ir
->actual_parameters
.get_head()->next
;
1194 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(invocation
));
1196 nir_builder_instr_insert(&b
, &instr
->instr
);
1199 case nir_intrinsic_read_first_invocation
: {
1200 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1201 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1202 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1204 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1205 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1207 nir_builder_instr_insert(&b
, &instr
->instr
);
1211 unreachable("not reached");
1214 if (ir
->return_deref
)
1215 nir_store_deref(&b
, evaluate_deref(ir
->return_deref
), &dest
->ssa
, ~0);
1220 unreachable("glsl_to_nir only handles function calls to intrinsics");
1224 nir_visitor::visit(ir_assignment
*ir
)
1226 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1228 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1229 ir
->lhs
->variable_referenced()->data
.precise
;
1231 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1232 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1233 if (ir
->condition
) {
1234 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1235 nir_copy_deref(&b
, evaluate_deref(ir
->lhs
), evaluate_deref(ir
->rhs
));
1236 nir_pop_if(&b
, NULL
);
1238 nir_copy_deref(&b
, evaluate_deref(ir
->lhs
), evaluate_deref(ir
->rhs
));
1243 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1245 ir
->lhs
->accept(this);
1246 nir_deref_instr
*lhs_deref
= this->deref
;
1247 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1249 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1250 /* GLSL IR will give us the input to the write-masked assignment in a
1251 * single packed vector. So, for example, if the writemask is xzw, then
1252 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1256 unsigned component
= 0;
1257 for (unsigned i
= 0; i
< 4; i
++) {
1258 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1260 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1263 if (ir
->condition
) {
1264 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1265 nir_store_deref(&b
, lhs_deref
, src
, ir
->write_mask
);
1266 nir_pop_if(&b
, NULL
);
1268 nir_store_deref(&b
, lhs_deref
, src
, ir
->write_mask
);
1273 * Given an instruction, returns a pointer to its destination or NULL if there
1274 * is no destination.
1276 * Note that this only handles instructions we generate at this level.
1279 get_instr_dest(nir_instr
*instr
)
1281 nir_alu_instr
*alu_instr
;
1282 nir_intrinsic_instr
*intrinsic_instr
;
1283 nir_tex_instr
*tex_instr
;
1285 switch (instr
->type
) {
1286 case nir_instr_type_alu
:
1287 alu_instr
= nir_instr_as_alu(instr
);
1288 return &alu_instr
->dest
.dest
;
1290 case nir_instr_type_intrinsic
:
1291 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1292 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1293 return &intrinsic_instr
->dest
;
1297 case nir_instr_type_tex
:
1298 tex_instr
= nir_instr_as_tex(instr
);
1299 return &tex_instr
->dest
;
1302 unreachable("not reached");
1309 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1312 nir_dest
*dest
= get_instr_dest(instr
);
1315 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1317 nir_builder_instr_insert(&b
, instr
);
1320 assert(dest
->is_ssa
);
1321 this->result
= &dest
->ssa
;
1326 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1329 if (ir
->as_dereference() || ir
->as_constant()) {
1331 * A dereference is being used on the right hand side, which means we
1332 * must emit a variable load.
1335 this->result
= nir_load_deref(&b
, this->deref
);
1338 return this->result
;
1342 type_is_float(glsl_base_type type
)
1344 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
||
1345 type
== GLSL_TYPE_FLOAT16
;
1349 type_is_signed(glsl_base_type type
)
1351 return type
== GLSL_TYPE_INT
|| type
== GLSL_TYPE_INT64
||
1352 type
== GLSL_TYPE_INT16
;
1356 nir_visitor::visit(ir_expression
*ir
)
1358 /* Some special cases */
1359 switch (ir
->operation
) {
1360 case ir_binop_ubo_load
: {
1361 nir_intrinsic_instr
*load
=
1362 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1363 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1364 load
->num_components
= ir
->type
->vector_elements
;
1365 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1366 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1367 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1370 * In UBO's, a true boolean value is any non-zero value, but we consider
1371 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1374 if (ir
->type
->is_boolean())
1375 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1380 case ir_unop_interpolate_at_centroid
:
1381 case ir_binop_interpolate_at_offset
:
1382 case ir_binop_interpolate_at_sample
: {
1383 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1384 ir_swizzle
*swizzle
= NULL
;
1386 /* the api does not allow a swizzle here, but the varying packing code
1387 * may have pushed one into here.
1389 swizzle
= ir
->operands
[0]->as_swizzle();
1391 deref
= swizzle
->val
->as_dereference();
1395 deref
->accept(this);
1397 nir_intrinsic_op op
;
1398 if (this->deref
->mode
== nir_var_shader_in
) {
1399 switch (ir
->operation
) {
1400 case ir_unop_interpolate_at_centroid
:
1401 op
= nir_intrinsic_interp_deref_at_centroid
;
1403 case ir_binop_interpolate_at_offset
:
1404 op
= nir_intrinsic_interp_deref_at_offset
;
1406 case ir_binop_interpolate_at_sample
:
1407 op
= nir_intrinsic_interp_deref_at_sample
;
1410 unreachable("Invalid interpolation intrinsic");
1413 /* This case can happen if the vertex shader does not write the
1414 * given varying. In this case, the linker will lower it to a
1415 * global variable. Since interpolating a variable makes no
1416 * sense, we'll just turn it into a load which will probably
1417 * eventually end up as an SSA definition.
1419 assert(this->deref
->mode
== nir_var_global
);
1420 op
= nir_intrinsic_load_deref
;
1423 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1424 intrin
->num_components
= deref
->type
->vector_elements
;
1425 intrin
->src
[0] = nir_src_for_ssa(&this->deref
->dest
.ssa
);
1427 if (intrin
->intrinsic
== nir_intrinsic_interp_deref_at_offset
||
1428 intrin
->intrinsic
== nir_intrinsic_interp_deref_at_sample
)
1429 intrin
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1431 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1432 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1435 unsigned swiz
[4] = {
1436 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1439 result
= nir_swizzle(&b
, result
, swiz
,
1440 swizzle
->type
->vector_elements
, false);
1450 nir_ssa_def
*srcs
[4];
1451 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1452 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1454 glsl_base_type types
[4];
1455 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1457 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1459 types
[i
] = GLSL_TYPE_FLOAT
;
1461 glsl_base_type out_type
;
1463 out_type
= ir
->type
->base_type
;
1465 out_type
= GLSL_TYPE_FLOAT
;
1467 switch (ir
->operation
) {
1468 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1469 case ir_unop_logic_not
:
1470 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1473 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1474 : nir_ineg(&b
, srcs
[0]);
1477 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1478 : nir_iabs(&b
, srcs
[0]);
1480 case ir_unop_saturate
:
1481 assert(type_is_float(types
[0]));
1482 result
= nir_fsat(&b
, srcs
[0]);
1485 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1486 : nir_isign(&b
, srcs
[0]);
1488 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1489 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1490 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1491 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1492 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1493 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1494 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1496 result
= supports_ints
? nir_i2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1499 result
= supports_ints
? nir_u2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1502 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1536 case ir_unop_i642u64
:
1537 case ir_unop_u642i64
: {
1538 nir_alu_type src_type
= nir_get_nir_type_for_glsl_base_type(types
[0]);
1539 nir_alu_type dst_type
= nir_get_nir_type_for_glsl_base_type(out_type
);
1540 result
= nir_build_alu(&b
, nir_type_conversion_op(src_type
, dst_type
,
1541 nir_rounding_mode_undef
),
1542 srcs
[0], NULL
, NULL
, NULL
);
1543 /* b2i and b2f don't have fixed bit-size versions so the builder will
1544 * just assume 32 and we have to fix it up here.
1546 result
->bit_size
= nir_alu_type_get_type_size(dst_type
);
1550 case ir_unop_bitcast_i2f
:
1551 case ir_unop_bitcast_f2i
:
1552 case ir_unop_bitcast_u2f
:
1553 case ir_unop_bitcast_f2u
:
1554 case ir_unop_bitcast_i642d
:
1555 case ir_unop_bitcast_d2i64
:
1556 case ir_unop_bitcast_u642d
:
1557 case ir_unop_bitcast_d2u64
:
1558 case ir_unop_subroutine_to_int
:
1560 result
= nir_imov(&b
, srcs
[0]);
1562 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1563 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1564 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1565 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1566 case ir_unop_frexp_exp
: result
= nir_frexp_exp(&b
, srcs
[0]); break;
1567 case ir_unop_frexp_sig
: result
= nir_frexp_sig(&b
, srcs
[0]); break;
1568 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1569 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1570 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1571 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1572 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1573 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1574 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1575 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1576 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1577 case ir_unop_pack_snorm_2x16
:
1578 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1580 case ir_unop_pack_snorm_4x8
:
1581 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1583 case ir_unop_pack_unorm_2x16
:
1584 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1586 case ir_unop_pack_unorm_4x8
:
1587 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1589 case ir_unop_pack_half_2x16
:
1590 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1592 case ir_unop_unpack_snorm_2x16
:
1593 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1595 case ir_unop_unpack_snorm_4x8
:
1596 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1598 case ir_unop_unpack_unorm_2x16
:
1599 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1601 case ir_unop_unpack_unorm_4x8
:
1602 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1604 case ir_unop_unpack_half_2x16
:
1605 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1607 case ir_unop_pack_sampler_2x32
:
1608 case ir_unop_pack_image_2x32
:
1609 case ir_unop_pack_double_2x32
:
1610 case ir_unop_pack_int_2x32
:
1611 case ir_unop_pack_uint_2x32
:
1612 result
= nir_pack_64_2x32(&b
, srcs
[0]);
1614 case ir_unop_unpack_sampler_2x32
:
1615 case ir_unop_unpack_image_2x32
:
1616 case ir_unop_unpack_double_2x32
:
1617 case ir_unop_unpack_int_2x32
:
1618 case ir_unop_unpack_uint_2x32
:
1619 result
= nir_unpack_64_2x32(&b
, srcs
[0]);
1621 case ir_unop_bitfield_reverse
:
1622 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1624 case ir_unop_bit_count
:
1625 result
= nir_bit_count(&b
, srcs
[0]);
1627 case ir_unop_find_msb
:
1629 case GLSL_TYPE_UINT
:
1630 result
= nir_ufind_msb(&b
, srcs
[0]);
1633 result
= nir_ifind_msb(&b
, srcs
[0]);
1636 unreachable("Invalid type for findMSB()");
1639 case ir_unop_find_lsb
:
1640 result
= nir_find_lsb(&b
, srcs
[0]);
1644 switch (ir
->type
->vector_elements
) {
1646 switch (ir
->operands
[0]->type
->vector_elements
) {
1647 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1648 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1649 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1650 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1651 default: unreachable("not reached");
1655 switch (ir
->operands
[0]->type
->vector_elements
) {
1656 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1657 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1658 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1659 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1660 default: unreachable("not reached");
1664 switch (ir
->operands
[0]->type
->vector_elements
) {
1665 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1666 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1667 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1668 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1669 default: unreachable("not reached");
1673 switch (ir
->operands
[0]->type
->vector_elements
) {
1674 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1675 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1676 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1677 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1678 default: unreachable("not reached");
1682 unreachable("not reached");
1685 case ir_unop_get_buffer_size
: {
1686 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1688 nir_intrinsic_get_buffer_size
);
1689 load
->num_components
= ir
->type
->vector_elements
;
1690 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1691 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1692 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1697 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1698 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1701 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1702 : nir_isub(&b
, srcs
[0], srcs
[1]);
1705 result
= type_is_float(out_type
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1706 : nir_imul(&b
, srcs
[0], srcs
[1]);
1709 if (type_is_float(out_type
))
1710 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1711 else if (type_is_signed(out_type
))
1712 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1714 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1717 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1718 : nir_umod(&b
, srcs
[0], srcs
[1]);
1721 if (type_is_float(out_type
))
1722 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1723 else if (type_is_signed(out_type
))
1724 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1726 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1729 if (type_is_float(out_type
))
1730 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1731 else if (type_is_signed(out_type
))
1732 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1734 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1736 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1737 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1738 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1739 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1740 case ir_binop_logic_and
:
1741 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1742 : nir_fand(&b
, srcs
[0], srcs
[1]);
1744 case ir_binop_logic_or
:
1745 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1746 : nir_for(&b
, srcs
[0], srcs
[1]);
1748 case ir_binop_logic_xor
:
1749 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1750 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1752 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1753 case ir_binop_rshift
:
1754 result
= (type_is_signed(out_type
)) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1755 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1757 case ir_binop_imul_high
:
1758 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1759 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1761 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1762 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1764 if (supports_ints
) {
1765 if (type_is_float(types
[0]))
1766 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1767 else if (type_is_signed(types
[0]))
1768 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1770 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1772 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1775 case ir_binop_gequal
:
1776 if (supports_ints
) {
1777 if (type_is_float(types
[0]))
1778 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1779 else if (type_is_signed(types
[0]))
1780 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1782 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1784 result
= nir_sge(&b
, srcs
[0], srcs
[1]);
1787 case ir_binop_equal
:
1788 if (supports_ints
) {
1789 if (type_is_float(types
[0]))
1790 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1792 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1794 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1797 case ir_binop_nequal
:
1798 if (supports_ints
) {
1799 if (type_is_float(types
[0]))
1800 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1802 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1804 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1807 case ir_binop_all_equal
:
1808 if (supports_ints
) {
1809 if (type_is_float(types
[0])) {
1810 switch (ir
->operands
[0]->type
->vector_elements
) {
1811 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1812 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1813 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1814 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1816 unreachable("not reached");
1819 switch (ir
->operands
[0]->type
->vector_elements
) {
1820 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1821 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1822 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1823 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1825 unreachable("not reached");
1829 switch (ir
->operands
[0]->type
->vector_elements
) {
1830 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1831 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1832 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1833 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1835 unreachable("not reached");
1839 case ir_binop_any_nequal
:
1840 if (supports_ints
) {
1841 if (type_is_float(types
[0])) {
1842 switch (ir
->operands
[0]->type
->vector_elements
) {
1843 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1844 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1845 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1846 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1848 unreachable("not reached");
1851 switch (ir
->operands
[0]->type
->vector_elements
) {
1852 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1853 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1854 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1855 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1857 unreachable("not reached");
1861 switch (ir
->operands
[0]->type
->vector_elements
) {
1862 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1863 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1864 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1865 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1867 unreachable("not reached");
1872 switch (ir
->operands
[0]->type
->vector_elements
) {
1873 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1874 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1875 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1877 unreachable("not reached");
1880 case ir_binop_vector_extract
: {
1881 result
= nir_channel(&b
, srcs
[0], 0);
1882 for (unsigned i
= 1; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1883 nir_ssa_def
*swizzled
= nir_channel(&b
, srcs
[0], i
);
1884 result
= nir_bcsel(&b
, nir_ieq(&b
, srcs
[1], nir_imm_int(&b
, i
)),
1890 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1892 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1895 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1899 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1901 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1903 case ir_triop_bitfield_extract
:
1904 result
= (out_type
== GLSL_TYPE_INT
) ?
1905 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1906 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1908 case ir_quadop_bitfield_insert
:
1909 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1911 case ir_quadop_vector
:
1912 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1916 unreachable("not reached");
1921 nir_visitor::visit(ir_swizzle
*ir
)
1923 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1924 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1925 ir
->type
->vector_elements
, !supports_ints
);
1929 nir_visitor::visit(ir_texture
*ir
)
1936 num_srcs
= 1; /* coordinate */
1941 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1942 num_srcs
= 2; /* coordinate, bias/lod */
1946 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1952 if (ir
->lod_info
.lod
!= NULL
)
1953 num_srcs
= 2; /* coordinate, lod */
1955 num_srcs
= 1; /* coordinate */
1959 op
= nir_texop_txf_ms
;
1960 num_srcs
= 2; /* coordinate, sample_index */
1965 if (ir
->lod_info
.lod
!= NULL
)
1966 num_srcs
= 1; /* lod */
1973 num_srcs
= 1; /* coordinate */
1978 num_srcs
= 1; /* coordinate */
1981 case ir_query_levels
:
1982 op
= nir_texop_query_levels
;
1986 case ir_texture_samples
:
1987 op
= nir_texop_texture_samples
;
1991 case ir_samples_identical
:
1992 op
= nir_texop_samples_identical
;
1993 num_srcs
= 1; /* coordinate */
1997 unreachable("not reached");
2000 if (ir
->projector
!= NULL
)
2002 if (ir
->shadow_comparator
!= NULL
)
2004 if (ir
->offset
!= NULL
)
2007 /* Add one for the texture deref */
2010 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
2013 instr
->sampler_dim
=
2014 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
2015 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
2016 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
2017 if (instr
->is_shadow
)
2018 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
2019 switch (ir
->type
->base_type
) {
2020 case GLSL_TYPE_FLOAT
:
2021 instr
->dest_type
= nir_type_float
;
2024 instr
->dest_type
= nir_type_int
;
2026 case GLSL_TYPE_BOOL
:
2027 case GLSL_TYPE_UINT
:
2028 instr
->dest_type
= nir_type_uint
;
2031 unreachable("not reached");
2034 nir_deref_instr
*sampler_deref
= evaluate_deref(ir
->sampler
);
2035 instr
->src
[0].src
= nir_src_for_ssa(&sampler_deref
->dest
.ssa
);
2036 instr
->src
[0].src_type
= nir_tex_src_texture_deref
;
2037 instr
->src
[1].src
= nir_src_for_ssa(&sampler_deref
->dest
.ssa
);
2038 instr
->src
[1].src_type
= nir_tex_src_sampler_deref
;
2040 unsigned src_number
= 2;
2042 if (ir
->coordinate
!= NULL
) {
2043 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
2044 instr
->src
[src_number
].src
=
2045 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
2046 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2050 if (ir
->projector
!= NULL
) {
2051 instr
->src
[src_number
].src
=
2052 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
2053 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2057 if (ir
->shadow_comparator
!= NULL
) {
2058 instr
->src
[src_number
].src
=
2059 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparator
));
2060 instr
->src
[src_number
].src_type
= nir_tex_src_comparator
;
2064 if (ir
->offset
!= NULL
) {
2065 /* we don't support multiple offsets yet */
2066 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2068 instr
->src
[src_number
].src
=
2069 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
2070 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2076 instr
->src
[src_number
].src
=
2077 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
2078 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2085 if (ir
->lod_info
.lod
!= NULL
) {
2086 instr
->src
[src_number
].src
=
2087 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
2088 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2094 instr
->src
[src_number
].src
=
2095 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
2096 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2098 instr
->src
[src_number
].src
=
2099 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
2100 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2105 instr
->src
[src_number
].src
=
2106 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
2107 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2112 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2119 assert(src_number
== num_srcs
);
2121 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2122 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2126 nir_visitor::visit(ir_constant
*ir
)
2129 * We don't know if this variable is an array or struct that gets
2130 * dereferenced, so do the safe thing an make it a variable with a
2131 * constant initializer and return a dereference.
2135 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2136 var
->data
.read_only
= true;
2137 var
->constant_initializer
= constant_copy(ir
, var
);
2139 this->deref
= nir_build_deref_var(&b
, var
);
2143 nir_visitor::visit(ir_dereference_variable
*ir
)
2145 struct hash_entry
*entry
=
2146 _mesa_hash_table_search(this->var_table
, ir
->var
);
2148 nir_variable
*var
= (nir_variable
*) entry
->data
;
2150 this->deref
= nir_build_deref_var(&b
, var
);
2154 nir_visitor::visit(ir_dereference_record
*ir
)
2156 ir
->record
->accept(this);
2158 int field_index
= ir
->field_idx
;
2159 assert(field_index
>= 0);
2161 this->deref
= nir_build_deref_struct(&b
, this->deref
, field_index
);
2165 nir_visitor::visit(ir_dereference_array
*ir
)
2167 nir_ssa_def
*index
= evaluate_rvalue(ir
->array_index
);
2169 ir
->array
->accept(this);
2171 this->deref
= nir_build_deref_array(&b
, this->deref
, index
);
2175 nir_visitor::visit(ir_barrier
*)
2177 nir_intrinsic_instr
*instr
=
2178 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2179 nir_builder_instr_insert(&b
, &instr
->instr
);