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_begin_fragment_shader_ordering
:
746 op
= nir_intrinsic_begin_fragment_shader_ordering
;
748 case ir_intrinsic_group_memory_barrier
:
749 op
= nir_intrinsic_group_memory_barrier
;
751 case ir_intrinsic_memory_barrier_atomic_counter
:
752 op
= nir_intrinsic_memory_barrier_atomic_counter
;
754 case ir_intrinsic_memory_barrier_buffer
:
755 op
= nir_intrinsic_memory_barrier_buffer
;
757 case ir_intrinsic_memory_barrier_image
:
758 op
= nir_intrinsic_memory_barrier_image
;
760 case ir_intrinsic_memory_barrier_shared
:
761 op
= nir_intrinsic_memory_barrier_shared
;
763 case ir_intrinsic_shared_load
:
764 op
= nir_intrinsic_load_shared
;
766 case ir_intrinsic_shared_store
:
767 op
= nir_intrinsic_store_shared
;
769 case ir_intrinsic_shared_atomic_add
:
770 op
= ir
->return_deref
->type
->is_integer_32_64()
771 ? nir_intrinsic_shared_atomic_add
772 : nir_intrinsic_shared_atomic_fadd
;
774 case ir_intrinsic_shared_atomic_and
:
775 op
= nir_intrinsic_shared_atomic_and
;
777 case ir_intrinsic_shared_atomic_or
:
778 op
= nir_intrinsic_shared_atomic_or
;
780 case ir_intrinsic_shared_atomic_xor
:
781 op
= nir_intrinsic_shared_atomic_xor
;
783 case ir_intrinsic_shared_atomic_min
:
784 assert(ir
->return_deref
);
785 if (ir
->return_deref
->type
== glsl_type::int_type
)
786 op
= nir_intrinsic_shared_atomic_imin
;
787 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
788 op
= nir_intrinsic_shared_atomic_umin
;
789 else if (ir
->return_deref
->type
== glsl_type::float_type
)
790 op
= nir_intrinsic_shared_atomic_fmin
;
792 unreachable("Invalid type");
794 case ir_intrinsic_shared_atomic_max
:
795 assert(ir
->return_deref
);
796 if (ir
->return_deref
->type
== glsl_type::int_type
)
797 op
= nir_intrinsic_shared_atomic_imax
;
798 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
799 op
= nir_intrinsic_shared_atomic_umax
;
800 else if (ir
->return_deref
->type
== glsl_type::float_type
)
801 op
= nir_intrinsic_shared_atomic_fmax
;
803 unreachable("Invalid type");
805 case ir_intrinsic_shared_atomic_exchange
:
806 op
= nir_intrinsic_shared_atomic_exchange
;
808 case ir_intrinsic_shared_atomic_comp_swap
:
809 op
= ir
->return_deref
->type
->is_integer_32_64()
810 ? nir_intrinsic_shared_atomic_comp_swap
811 : nir_intrinsic_shared_atomic_fcomp_swap
;
813 case ir_intrinsic_vote_any
:
814 op
= nir_intrinsic_vote_any
;
816 case ir_intrinsic_vote_all
:
817 op
= nir_intrinsic_vote_all
;
819 case ir_intrinsic_vote_eq
:
820 op
= nir_intrinsic_vote_ieq
;
822 case ir_intrinsic_ballot
:
823 op
= nir_intrinsic_ballot
;
825 case ir_intrinsic_read_invocation
:
826 op
= nir_intrinsic_read_invocation
;
828 case ir_intrinsic_read_first_invocation
:
829 op
= nir_intrinsic_read_first_invocation
;
832 unreachable("not reached");
835 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
836 nir_dest
*dest
= &instr
->dest
;
839 case nir_intrinsic_atomic_counter_read_deref
:
840 case nir_intrinsic_atomic_counter_inc_deref
:
841 case nir_intrinsic_atomic_counter_pre_dec_deref
:
842 case nir_intrinsic_atomic_counter_add_deref
:
843 case nir_intrinsic_atomic_counter_min_deref
:
844 case nir_intrinsic_atomic_counter_max_deref
:
845 case nir_intrinsic_atomic_counter_and_deref
:
846 case nir_intrinsic_atomic_counter_or_deref
:
847 case nir_intrinsic_atomic_counter_xor_deref
:
848 case nir_intrinsic_atomic_counter_exchange_deref
:
849 case nir_intrinsic_atomic_counter_comp_swap_deref
: {
850 /* Set the counter variable dereference. */
851 exec_node
*param
= ir
->actual_parameters
.get_head();
852 ir_dereference
*counter
= (ir_dereference
*)param
;
854 instr
->src
[0] = nir_src_for_ssa(&evaluate_deref(counter
)->dest
.ssa
);
855 param
= param
->get_next();
857 /* Set the intrinsic destination. */
858 if (ir
->return_deref
) {
859 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
862 /* Set the intrinsic parameters. */
863 if (!param
->is_tail_sentinel()) {
865 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
866 param
= param
->get_next();
869 if (!param
->is_tail_sentinel()) {
871 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
872 param
= param
->get_next();
875 nir_builder_instr_insert(&b
, &instr
->instr
);
878 case nir_intrinsic_image_deref_load
:
879 case nir_intrinsic_image_deref_store
:
880 case nir_intrinsic_image_deref_atomic_add
:
881 case nir_intrinsic_image_deref_atomic_min
:
882 case nir_intrinsic_image_deref_atomic_max
:
883 case nir_intrinsic_image_deref_atomic_and
:
884 case nir_intrinsic_image_deref_atomic_or
:
885 case nir_intrinsic_image_deref_atomic_xor
:
886 case nir_intrinsic_image_deref_atomic_exchange
:
887 case nir_intrinsic_image_deref_atomic_comp_swap
:
888 case nir_intrinsic_image_deref_atomic_fadd
:
889 case nir_intrinsic_image_deref_samples
:
890 case nir_intrinsic_image_deref_size
: {
891 nir_ssa_undef_instr
*instr_undef
=
892 nir_ssa_undef_instr_create(shader
, 1, 32);
893 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
895 /* Set the image variable dereference. */
896 exec_node
*param
= ir
->actual_parameters
.get_head();
897 ir_dereference
*image
= (ir_dereference
*)param
;
898 const glsl_type
*type
=
899 image
->variable_referenced()->type
->without_array();
901 instr
->src
[0] = nir_src_for_ssa(&evaluate_deref(image
)->dest
.ssa
);
902 param
= param
->get_next();
904 /* Set the intrinsic destination. */
905 if (ir
->return_deref
) {
906 unsigned num_components
= ir
->return_deref
->type
->vector_elements
;
907 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
908 num_components
, 32, NULL
);
911 if (op
== nir_intrinsic_image_deref_size
) {
912 instr
->num_components
= instr
->dest
.ssa
.num_components
;
913 } else if (op
== nir_intrinsic_image_deref_load
||
914 op
== nir_intrinsic_image_deref_store
) {
915 instr
->num_components
= 4;
918 if (op
== nir_intrinsic_image_deref_size
||
919 op
== nir_intrinsic_image_deref_samples
) {
920 nir_builder_instr_insert(&b
, &instr
->instr
);
924 /* Set the address argument, extending the coordinate vector to four
927 nir_ssa_def
*src_addr
=
928 evaluate_rvalue((ir_dereference
*)param
);
929 nir_ssa_def
*srcs
[4];
931 for (int i
= 0; i
< 4; i
++) {
932 if (i
< type
->coordinate_components())
933 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
935 srcs
[i
] = &instr_undef
->def
;
938 instr
->src
[1] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
939 param
= param
->get_next();
941 /* Set the sample argument, which is undefined for single-sample
944 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
946 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
947 param
= param
->get_next();
949 instr
->src
[2] = nir_src_for_ssa(&instr_undef
->def
);
952 /* Set the intrinsic parameters. */
953 if (!param
->is_tail_sentinel()) {
955 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
956 param
= param
->get_next();
959 if (!param
->is_tail_sentinel()) {
961 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
962 param
= param
->get_next();
964 nir_builder_instr_insert(&b
, &instr
->instr
);
967 case nir_intrinsic_memory_barrier
:
968 case nir_intrinsic_group_memory_barrier
:
969 case nir_intrinsic_memory_barrier_atomic_counter
:
970 case nir_intrinsic_memory_barrier_buffer
:
971 case nir_intrinsic_memory_barrier_image
:
972 case nir_intrinsic_memory_barrier_shared
:
973 nir_builder_instr_insert(&b
, &instr
->instr
);
975 case nir_intrinsic_shader_clock
:
976 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 2, 32, NULL
);
977 instr
->num_components
= 2;
978 nir_builder_instr_insert(&b
, &instr
->instr
);
980 case nir_intrinsic_begin_invocation_interlock
:
981 nir_builder_instr_insert(&b
, &instr
->instr
);
983 case nir_intrinsic_end_invocation_interlock
:
984 nir_builder_instr_insert(&b
, &instr
->instr
);
986 case nir_intrinsic_begin_fragment_shader_ordering
:
987 nir_builder_instr_insert(&b
, &instr
->instr
);
989 case nir_intrinsic_store_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 param
= param
->get_next();
997 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
999 param
= param
->get_next();
1000 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1003 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1004 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
1005 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
1006 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1007 instr
->num_components
= val
->type
->vector_elements
;
1009 nir_builder_instr_insert(&b
, &instr
->instr
);
1012 case nir_intrinsic_load_ssbo
: {
1013 exec_node
*param
= ir
->actual_parameters
.get_head();
1014 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
1016 param
= param
->get_next();
1017 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1019 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
1020 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1022 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1023 instr
->num_components
= type
->vector_elements
;
1025 /* Setup destination register */
1026 unsigned bit_size
= glsl_get_bit_size(type
);
1027 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1028 type
->vector_elements
, bit_size
, NULL
);
1030 /* Insert the created nir instruction now since in the case of boolean
1031 * result we will need to emit another instruction after it
1033 nir_builder_instr_insert(&b
, &instr
->instr
);
1036 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
1037 * consider a true boolean to be ~0. Fix this up with a != 0
1040 if (type
->is_boolean()) {
1041 nir_alu_instr
*load_ssbo_compare
=
1042 nir_alu_instr_create(shader
, nir_op_ine
);
1043 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
1044 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
1045 load_ssbo_compare
->src
[1].src
=
1046 nir_src_for_ssa(nir_imm_int(&b
, 0));
1047 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
1048 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
1049 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
1050 &load_ssbo_compare
->dest
.dest
,
1051 type
->vector_elements
, bit_size
, NULL
);
1052 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
1053 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
1054 dest
= &load_ssbo_compare
->dest
.dest
;
1058 case nir_intrinsic_ssbo_atomic_add
:
1059 case nir_intrinsic_ssbo_atomic_imin
:
1060 case nir_intrinsic_ssbo_atomic_umin
:
1061 case nir_intrinsic_ssbo_atomic_imax
:
1062 case nir_intrinsic_ssbo_atomic_umax
:
1063 case nir_intrinsic_ssbo_atomic_and
:
1064 case nir_intrinsic_ssbo_atomic_or
:
1065 case nir_intrinsic_ssbo_atomic_xor
:
1066 case nir_intrinsic_ssbo_atomic_exchange
:
1067 case nir_intrinsic_ssbo_atomic_comp_swap
:
1068 case nir_intrinsic_ssbo_atomic_fadd
:
1069 case nir_intrinsic_ssbo_atomic_fmin
:
1070 case nir_intrinsic_ssbo_atomic_fmax
:
1071 case nir_intrinsic_ssbo_atomic_fcomp_swap
: {
1072 int param_count
= ir
->actual_parameters
.length();
1073 assert(param_count
== 3 || param_count
== 4);
1076 exec_node
*param
= ir
->actual_parameters
.get_head();
1077 ir_instruction
*inst
= (ir_instruction
*) param
;
1078 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1081 param
= param
->get_next();
1082 inst
= (ir_instruction
*) param
;
1083 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1085 /* data1 parameter (this is always present) */
1086 param
= param
->get_next();
1087 inst
= (ir_instruction
*) param
;
1088 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1090 /* data2 parameter (only with atomic_comp_swap) */
1091 if (param_count
== 4) {
1092 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
||
1093 op
== nir_intrinsic_ssbo_atomic_fcomp_swap
);
1094 param
= param
->get_next();
1095 inst
= (ir_instruction
*) param
;
1096 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1100 assert(ir
->return_deref
);
1101 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1102 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1103 nir_builder_instr_insert(&b
, &instr
->instr
);
1106 case nir_intrinsic_load_shared
: {
1107 exec_node
*param
= ir
->actual_parameters
.get_head();
1108 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1110 nir_intrinsic_set_base(instr
, 0);
1111 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1113 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1114 instr
->num_components
= type
->vector_elements
;
1116 /* Setup destination register */
1117 unsigned bit_size
= glsl_get_bit_size(type
);
1118 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1119 type
->vector_elements
, bit_size
, NULL
);
1121 nir_builder_instr_insert(&b
, &instr
->instr
);
1124 case nir_intrinsic_store_shared
: {
1125 exec_node
*param
= ir
->actual_parameters
.get_head();
1126 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1128 param
= param
->get_next();
1129 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1131 param
= param
->get_next();
1132 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1135 nir_intrinsic_set_base(instr
, 0);
1136 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1138 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1140 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1141 instr
->num_components
= val
->type
->vector_elements
;
1143 nir_builder_instr_insert(&b
, &instr
->instr
);
1146 case nir_intrinsic_shared_atomic_add
:
1147 case nir_intrinsic_shared_atomic_imin
:
1148 case nir_intrinsic_shared_atomic_umin
:
1149 case nir_intrinsic_shared_atomic_imax
:
1150 case nir_intrinsic_shared_atomic_umax
:
1151 case nir_intrinsic_shared_atomic_and
:
1152 case nir_intrinsic_shared_atomic_or
:
1153 case nir_intrinsic_shared_atomic_xor
:
1154 case nir_intrinsic_shared_atomic_exchange
:
1155 case nir_intrinsic_shared_atomic_comp_swap
:
1156 case nir_intrinsic_shared_atomic_fadd
:
1157 case nir_intrinsic_shared_atomic_fmin
:
1158 case nir_intrinsic_shared_atomic_fmax
:
1159 case nir_intrinsic_shared_atomic_fcomp_swap
: {
1160 int param_count
= ir
->actual_parameters
.length();
1161 assert(param_count
== 2 || param_count
== 3);
1164 exec_node
*param
= ir
->actual_parameters
.get_head();
1165 ir_instruction
*inst
= (ir_instruction
*) param
;
1166 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1168 /* data1 parameter (this is always present) */
1169 param
= param
->get_next();
1170 inst
= (ir_instruction
*) param
;
1171 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1173 /* data2 parameter (only with atomic_comp_swap) */
1174 if (param_count
== 3) {
1175 assert(op
== nir_intrinsic_shared_atomic_comp_swap
||
1176 op
== nir_intrinsic_shared_atomic_fcomp_swap
);
1177 param
= param
->get_next();
1178 inst
= (ir_instruction
*) param
;
1180 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1184 assert(ir
->return_deref
);
1185 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1186 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1187 ir
->return_deref
->type
->vector_elements
,
1189 nir_builder_instr_insert(&b
, &instr
->instr
);
1192 case nir_intrinsic_vote_any
:
1193 case nir_intrinsic_vote_all
:
1194 case nir_intrinsic_vote_ieq
: {
1195 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
1196 instr
->num_components
= 1;
1198 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1199 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1201 nir_builder_instr_insert(&b
, &instr
->instr
);
1205 case nir_intrinsic_ballot
: {
1206 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1207 ir
->return_deref
->type
->vector_elements
, 64, NULL
);
1208 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1210 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1211 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1213 nir_builder_instr_insert(&b
, &instr
->instr
);
1216 case nir_intrinsic_read_invocation
: {
1217 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1218 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1219 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1221 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1222 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1224 ir_rvalue
*invocation
= (ir_rvalue
*) ir
->actual_parameters
.get_head()->next
;
1225 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(invocation
));
1227 nir_builder_instr_insert(&b
, &instr
->instr
);
1230 case nir_intrinsic_read_first_invocation
: {
1231 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1232 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1233 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1235 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1236 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1238 nir_builder_instr_insert(&b
, &instr
->instr
);
1242 unreachable("not reached");
1245 if (ir
->return_deref
)
1246 nir_store_deref(&b
, evaluate_deref(ir
->return_deref
), &dest
->ssa
, ~0);
1251 unreachable("glsl_to_nir only handles function calls to intrinsics");
1255 nir_visitor::visit(ir_assignment
*ir
)
1257 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1259 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1260 ir
->lhs
->variable_referenced()->data
.precise
;
1262 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1263 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1264 if (ir
->condition
) {
1265 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1266 nir_copy_deref(&b
, evaluate_deref(ir
->lhs
), evaluate_deref(ir
->rhs
));
1267 nir_pop_if(&b
, NULL
);
1269 nir_copy_deref(&b
, evaluate_deref(ir
->lhs
), evaluate_deref(ir
->rhs
));
1274 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1276 ir
->lhs
->accept(this);
1277 nir_deref_instr
*lhs_deref
= this->deref
;
1278 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1280 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1281 /* GLSL IR will give us the input to the write-masked assignment in a
1282 * single packed vector. So, for example, if the writemask is xzw, then
1283 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1287 unsigned component
= 0;
1288 for (unsigned i
= 0; i
< 4; i
++) {
1289 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1291 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1294 if (ir
->condition
) {
1295 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1296 nir_store_deref(&b
, lhs_deref
, src
, ir
->write_mask
);
1297 nir_pop_if(&b
, NULL
);
1299 nir_store_deref(&b
, lhs_deref
, src
, ir
->write_mask
);
1304 * Given an instruction, returns a pointer to its destination or NULL if there
1305 * is no destination.
1307 * Note that this only handles instructions we generate at this level.
1310 get_instr_dest(nir_instr
*instr
)
1312 nir_alu_instr
*alu_instr
;
1313 nir_intrinsic_instr
*intrinsic_instr
;
1314 nir_tex_instr
*tex_instr
;
1316 switch (instr
->type
) {
1317 case nir_instr_type_alu
:
1318 alu_instr
= nir_instr_as_alu(instr
);
1319 return &alu_instr
->dest
.dest
;
1321 case nir_instr_type_intrinsic
:
1322 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1323 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1324 return &intrinsic_instr
->dest
;
1328 case nir_instr_type_tex
:
1329 tex_instr
= nir_instr_as_tex(instr
);
1330 return &tex_instr
->dest
;
1333 unreachable("not reached");
1340 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1343 nir_dest
*dest
= get_instr_dest(instr
);
1346 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1348 nir_builder_instr_insert(&b
, instr
);
1351 assert(dest
->is_ssa
);
1352 this->result
= &dest
->ssa
;
1357 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1360 if (ir
->as_dereference() || ir
->as_constant()) {
1362 * A dereference is being used on the right hand side, which means we
1363 * must emit a variable load.
1366 this->result
= nir_load_deref(&b
, this->deref
);
1369 return this->result
;
1373 type_is_float(glsl_base_type type
)
1375 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
||
1376 type
== GLSL_TYPE_FLOAT16
;
1380 type_is_signed(glsl_base_type type
)
1382 return type
== GLSL_TYPE_INT
|| type
== GLSL_TYPE_INT64
||
1383 type
== GLSL_TYPE_INT16
;
1387 nir_visitor::visit(ir_expression
*ir
)
1389 /* Some special cases */
1390 switch (ir
->operation
) {
1391 case ir_binop_ubo_load
: {
1392 nir_intrinsic_instr
*load
=
1393 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1394 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1395 load
->num_components
= ir
->type
->vector_elements
;
1396 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1397 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1398 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1401 * In UBO's, a true boolean value is any non-zero value, but we consider
1402 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1405 if (ir
->type
->is_boolean())
1406 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1411 case ir_unop_interpolate_at_centroid
:
1412 case ir_binop_interpolate_at_offset
:
1413 case ir_binop_interpolate_at_sample
: {
1414 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1415 ir_swizzle
*swizzle
= NULL
;
1417 /* the api does not allow a swizzle here, but the varying packing code
1418 * may have pushed one into here.
1420 swizzle
= ir
->operands
[0]->as_swizzle();
1422 deref
= swizzle
->val
->as_dereference();
1426 deref
->accept(this);
1428 nir_intrinsic_op op
;
1429 if (this->deref
->mode
== nir_var_shader_in
) {
1430 switch (ir
->operation
) {
1431 case ir_unop_interpolate_at_centroid
:
1432 op
= nir_intrinsic_interp_deref_at_centroid
;
1434 case ir_binop_interpolate_at_offset
:
1435 op
= nir_intrinsic_interp_deref_at_offset
;
1437 case ir_binop_interpolate_at_sample
:
1438 op
= nir_intrinsic_interp_deref_at_sample
;
1441 unreachable("Invalid interpolation intrinsic");
1444 /* This case can happen if the vertex shader does not write the
1445 * given varying. In this case, the linker will lower it to a
1446 * global variable. Since interpolating a variable makes no
1447 * sense, we'll just turn it into a load which will probably
1448 * eventually end up as an SSA definition.
1450 assert(this->deref
->mode
== nir_var_global
);
1451 op
= nir_intrinsic_load_deref
;
1454 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1455 intrin
->num_components
= deref
->type
->vector_elements
;
1456 intrin
->src
[0] = nir_src_for_ssa(&this->deref
->dest
.ssa
);
1458 if (intrin
->intrinsic
== nir_intrinsic_interp_deref_at_offset
||
1459 intrin
->intrinsic
== nir_intrinsic_interp_deref_at_sample
)
1460 intrin
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1462 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1463 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1466 unsigned swiz
[4] = {
1467 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1470 result
= nir_swizzle(&b
, result
, swiz
,
1471 swizzle
->type
->vector_elements
, false);
1481 nir_ssa_def
*srcs
[4];
1482 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1483 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1485 glsl_base_type types
[4];
1486 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1488 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1490 types
[i
] = GLSL_TYPE_FLOAT
;
1492 glsl_base_type out_type
;
1494 out_type
= ir
->type
->base_type
;
1496 out_type
= GLSL_TYPE_FLOAT
;
1498 switch (ir
->operation
) {
1499 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1500 case ir_unop_logic_not
:
1501 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1504 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1505 : nir_ineg(&b
, srcs
[0]);
1508 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1509 : nir_iabs(&b
, srcs
[0]);
1511 case ir_unop_saturate
:
1512 assert(type_is_float(types
[0]));
1513 result
= nir_fsat(&b
, srcs
[0]);
1516 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1517 : nir_isign(&b
, srcs
[0]);
1519 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1520 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1521 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1522 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1523 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1524 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1525 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1527 result
= supports_ints
? nir_i2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1530 result
= supports_ints
? nir_u2f32(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1533 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1567 case ir_unop_i642u64
:
1568 case ir_unop_u642i64
: {
1569 nir_alu_type src_type
= nir_get_nir_type_for_glsl_base_type(types
[0]);
1570 nir_alu_type dst_type
= nir_get_nir_type_for_glsl_base_type(out_type
);
1571 result
= nir_build_alu(&b
, nir_type_conversion_op(src_type
, dst_type
,
1572 nir_rounding_mode_undef
),
1573 srcs
[0], NULL
, NULL
, NULL
);
1574 /* b2i and b2f don't have fixed bit-size versions so the builder will
1575 * just assume 32 and we have to fix it up here.
1577 result
->bit_size
= nir_alu_type_get_type_size(dst_type
);
1581 case ir_unop_bitcast_i2f
:
1582 case ir_unop_bitcast_f2i
:
1583 case ir_unop_bitcast_u2f
:
1584 case ir_unop_bitcast_f2u
:
1585 case ir_unop_bitcast_i642d
:
1586 case ir_unop_bitcast_d2i64
:
1587 case ir_unop_bitcast_u642d
:
1588 case ir_unop_bitcast_d2u64
:
1589 case ir_unop_subroutine_to_int
:
1591 result
= nir_imov(&b
, srcs
[0]);
1593 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1594 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1595 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1596 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1597 case ir_unop_frexp_exp
: result
= nir_frexp_exp(&b
, srcs
[0]); break;
1598 case ir_unop_frexp_sig
: result
= nir_frexp_sig(&b
, srcs
[0]); break;
1599 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1600 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1601 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1602 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1603 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1604 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1605 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1606 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1607 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1608 case ir_unop_pack_snorm_2x16
:
1609 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1611 case ir_unop_pack_snorm_4x8
:
1612 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1614 case ir_unop_pack_unorm_2x16
:
1615 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1617 case ir_unop_pack_unorm_4x8
:
1618 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1620 case ir_unop_pack_half_2x16
:
1621 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1623 case ir_unop_unpack_snorm_2x16
:
1624 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1626 case ir_unop_unpack_snorm_4x8
:
1627 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1629 case ir_unop_unpack_unorm_2x16
:
1630 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1632 case ir_unop_unpack_unorm_4x8
:
1633 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1635 case ir_unop_unpack_half_2x16
:
1636 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1638 case ir_unop_pack_sampler_2x32
:
1639 case ir_unop_pack_image_2x32
:
1640 case ir_unop_pack_double_2x32
:
1641 case ir_unop_pack_int_2x32
:
1642 case ir_unop_pack_uint_2x32
:
1643 result
= nir_pack_64_2x32(&b
, srcs
[0]);
1645 case ir_unop_unpack_sampler_2x32
:
1646 case ir_unop_unpack_image_2x32
:
1647 case ir_unop_unpack_double_2x32
:
1648 case ir_unop_unpack_int_2x32
:
1649 case ir_unop_unpack_uint_2x32
:
1650 result
= nir_unpack_64_2x32(&b
, srcs
[0]);
1652 case ir_unop_bitfield_reverse
:
1653 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1655 case ir_unop_bit_count
:
1656 result
= nir_bit_count(&b
, srcs
[0]);
1658 case ir_unop_find_msb
:
1660 case GLSL_TYPE_UINT
:
1661 result
= nir_ufind_msb(&b
, srcs
[0]);
1664 result
= nir_ifind_msb(&b
, srcs
[0]);
1667 unreachable("Invalid type for findMSB()");
1670 case ir_unop_find_lsb
:
1671 result
= nir_find_lsb(&b
, srcs
[0]);
1675 switch (ir
->type
->vector_elements
) {
1677 switch (ir
->operands
[0]->type
->vector_elements
) {
1678 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1679 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1680 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1681 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1682 default: unreachable("not reached");
1686 switch (ir
->operands
[0]->type
->vector_elements
) {
1687 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1688 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1689 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1690 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1691 default: unreachable("not reached");
1695 switch (ir
->operands
[0]->type
->vector_elements
) {
1696 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1697 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1698 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1699 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1700 default: unreachable("not reached");
1704 switch (ir
->operands
[0]->type
->vector_elements
) {
1705 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1706 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1707 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1708 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1709 default: unreachable("not reached");
1713 unreachable("not reached");
1716 case ir_unop_get_buffer_size
: {
1717 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1719 nir_intrinsic_get_buffer_size
);
1720 load
->num_components
= ir
->type
->vector_elements
;
1721 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1722 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
1723 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1728 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1729 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1732 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1733 : nir_isub(&b
, srcs
[0], srcs
[1]);
1736 result
= type_is_float(out_type
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1737 : nir_imul(&b
, srcs
[0], srcs
[1]);
1740 if (type_is_float(out_type
))
1741 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1742 else if (type_is_signed(out_type
))
1743 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1745 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1748 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1749 : nir_umod(&b
, srcs
[0], srcs
[1]);
1752 if (type_is_float(out_type
))
1753 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1754 else if (type_is_signed(out_type
))
1755 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1757 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1760 if (type_is_float(out_type
))
1761 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1762 else if (type_is_signed(out_type
))
1763 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1765 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1767 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1768 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1769 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1770 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1771 case ir_binop_logic_and
:
1772 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1773 : nir_fand(&b
, srcs
[0], srcs
[1]);
1775 case ir_binop_logic_or
:
1776 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1777 : nir_for(&b
, srcs
[0], srcs
[1]);
1779 case ir_binop_logic_xor
:
1780 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1781 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1783 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1784 case ir_binop_rshift
:
1785 result
= (type_is_signed(out_type
)) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1786 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1788 case ir_binop_imul_high
:
1789 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1790 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1792 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1793 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1795 if (supports_ints
) {
1796 if (type_is_float(types
[0]))
1797 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1798 else if (type_is_signed(types
[0]))
1799 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1801 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1803 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1806 case ir_binop_gequal
:
1807 if (supports_ints
) {
1808 if (type_is_float(types
[0]))
1809 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1810 else if (type_is_signed(types
[0]))
1811 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1813 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1815 result
= nir_sge(&b
, srcs
[0], srcs
[1]);
1818 case ir_binop_equal
:
1819 if (supports_ints
) {
1820 if (type_is_float(types
[0]))
1821 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1823 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1825 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1828 case ir_binop_nequal
:
1829 if (supports_ints
) {
1830 if (type_is_float(types
[0]))
1831 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1833 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1835 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1838 case ir_binop_all_equal
:
1839 if (supports_ints
) {
1840 if (type_is_float(types
[0])) {
1841 switch (ir
->operands
[0]->type
->vector_elements
) {
1842 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1843 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1844 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1845 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1847 unreachable("not reached");
1850 switch (ir
->operands
[0]->type
->vector_elements
) {
1851 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1852 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1853 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1854 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1856 unreachable("not reached");
1860 switch (ir
->operands
[0]->type
->vector_elements
) {
1861 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1862 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1863 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1864 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1866 unreachable("not reached");
1870 case ir_binop_any_nequal
:
1871 if (supports_ints
) {
1872 if (type_is_float(types
[0])) {
1873 switch (ir
->operands
[0]->type
->vector_elements
) {
1874 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1875 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1876 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1877 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1879 unreachable("not reached");
1882 switch (ir
->operands
[0]->type
->vector_elements
) {
1883 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1884 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1885 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1886 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1888 unreachable("not reached");
1892 switch (ir
->operands
[0]->type
->vector_elements
) {
1893 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1894 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1895 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1896 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1898 unreachable("not reached");
1903 switch (ir
->operands
[0]->type
->vector_elements
) {
1904 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1905 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1906 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1908 unreachable("not reached");
1911 case ir_binop_vector_extract
: {
1912 result
= nir_channel(&b
, srcs
[0], 0);
1913 for (unsigned i
= 1; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1914 nir_ssa_def
*swizzled
= nir_channel(&b
, srcs
[0], i
);
1915 result
= nir_bcsel(&b
, nir_ieq(&b
, srcs
[1], nir_imm_int(&b
, i
)),
1921 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1923 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1926 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1930 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1932 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1934 case ir_triop_bitfield_extract
:
1935 result
= (out_type
== GLSL_TYPE_INT
) ?
1936 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1937 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1939 case ir_quadop_bitfield_insert
:
1940 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1942 case ir_quadop_vector
:
1943 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1947 unreachable("not reached");
1952 nir_visitor::visit(ir_swizzle
*ir
)
1954 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1955 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1956 ir
->type
->vector_elements
, !supports_ints
);
1960 nir_visitor::visit(ir_texture
*ir
)
1967 num_srcs
= 1; /* coordinate */
1972 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1973 num_srcs
= 2; /* coordinate, bias/lod */
1977 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1983 if (ir
->lod_info
.lod
!= NULL
)
1984 num_srcs
= 2; /* coordinate, lod */
1986 num_srcs
= 1; /* coordinate */
1990 op
= nir_texop_txf_ms
;
1991 num_srcs
= 2; /* coordinate, sample_index */
1996 if (ir
->lod_info
.lod
!= NULL
)
1997 num_srcs
= 1; /* lod */
2004 num_srcs
= 1; /* coordinate */
2009 num_srcs
= 1; /* coordinate */
2012 case ir_query_levels
:
2013 op
= nir_texop_query_levels
;
2017 case ir_texture_samples
:
2018 op
= nir_texop_texture_samples
;
2022 case ir_samples_identical
:
2023 op
= nir_texop_samples_identical
;
2024 num_srcs
= 1; /* coordinate */
2028 unreachable("not reached");
2031 if (ir
->projector
!= NULL
)
2033 if (ir
->shadow_comparator
!= NULL
)
2035 if (ir
->offset
!= NULL
)
2038 /* Add one for the texture deref */
2041 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
2044 instr
->sampler_dim
=
2045 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
2046 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
2047 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
2048 if (instr
->is_shadow
)
2049 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
2050 switch (ir
->type
->base_type
) {
2051 case GLSL_TYPE_FLOAT
:
2052 instr
->dest_type
= nir_type_float
;
2055 instr
->dest_type
= nir_type_int
;
2057 case GLSL_TYPE_BOOL
:
2058 case GLSL_TYPE_UINT
:
2059 instr
->dest_type
= nir_type_uint
;
2062 unreachable("not reached");
2065 nir_deref_instr
*sampler_deref
= evaluate_deref(ir
->sampler
);
2066 instr
->src
[0].src
= nir_src_for_ssa(&sampler_deref
->dest
.ssa
);
2067 instr
->src
[0].src_type
= nir_tex_src_texture_deref
;
2068 instr
->src
[1].src
= nir_src_for_ssa(&sampler_deref
->dest
.ssa
);
2069 instr
->src
[1].src_type
= nir_tex_src_sampler_deref
;
2071 unsigned src_number
= 2;
2073 if (ir
->coordinate
!= NULL
) {
2074 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
2075 instr
->src
[src_number
].src
=
2076 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
2077 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2081 if (ir
->projector
!= NULL
) {
2082 instr
->src
[src_number
].src
=
2083 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
2084 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2088 if (ir
->shadow_comparator
!= NULL
) {
2089 instr
->src
[src_number
].src
=
2090 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparator
));
2091 instr
->src
[src_number
].src_type
= nir_tex_src_comparator
;
2095 if (ir
->offset
!= NULL
) {
2096 /* we don't support multiple offsets yet */
2097 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2099 instr
->src
[src_number
].src
=
2100 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
2101 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2107 instr
->src
[src_number
].src
=
2108 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
2109 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2116 if (ir
->lod_info
.lod
!= NULL
) {
2117 instr
->src
[src_number
].src
=
2118 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
2119 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2125 instr
->src
[src_number
].src
=
2126 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
2127 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2129 instr
->src
[src_number
].src
=
2130 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
2131 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2136 instr
->src
[src_number
].src
=
2137 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
2138 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2143 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2150 assert(src_number
== num_srcs
);
2152 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2153 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2157 nir_visitor::visit(ir_constant
*ir
)
2160 * We don't know if this variable is an array or struct that gets
2161 * dereferenced, so do the safe thing an make it a variable with a
2162 * constant initializer and return a dereference.
2166 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2167 var
->data
.read_only
= true;
2168 var
->constant_initializer
= constant_copy(ir
, var
);
2170 this->deref
= nir_build_deref_var(&b
, var
);
2174 nir_visitor::visit(ir_dereference_variable
*ir
)
2176 struct hash_entry
*entry
=
2177 _mesa_hash_table_search(this->var_table
, ir
->var
);
2179 nir_variable
*var
= (nir_variable
*) entry
->data
;
2181 this->deref
= nir_build_deref_var(&b
, var
);
2185 nir_visitor::visit(ir_dereference_record
*ir
)
2187 ir
->record
->accept(this);
2189 int field_index
= ir
->field_idx
;
2190 assert(field_index
>= 0);
2192 this->deref
= nir_build_deref_struct(&b
, this->deref
, field_index
);
2196 nir_visitor::visit(ir_dereference_array
*ir
)
2198 nir_ssa_def
*index
= evaluate_rvalue(ir
->array_index
);
2200 ir
->array
->accept(this);
2202 this->deref
= nir_build_deref_array(&b
, this->deref
, index
);
2206 nir_visitor::visit(ir_barrier
*)
2208 nir_intrinsic_instr
*instr
=
2209 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2210 nir_builder_instr_insert(&b
, &instr
->instr
);