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 "nir_control_flow.h"
30 #include "nir_builder.h"
31 #include "compiler/glsl/ir_visitor.h"
32 #include "compiler/glsl/ir_hierarchical_visitor.h"
33 #include "compiler/glsl/ir.h"
34 #include "main/imports.h"
37 * pass to lower GLSL IR to NIR
39 * This will lower variable dereferences to loads/stores of corresponding
40 * variables in NIR - the variables will be converted to registers in a later
46 class nir_visitor
: public ir_visitor
49 nir_visitor(nir_shader
*shader
);
52 virtual void visit(ir_variable
*);
53 virtual void visit(ir_function
*);
54 virtual void visit(ir_function_signature
*);
55 virtual void visit(ir_loop
*);
56 virtual void visit(ir_if
*);
57 virtual void visit(ir_discard
*);
58 virtual void visit(ir_loop_jump
*);
59 virtual void visit(ir_return
*);
60 virtual void visit(ir_call
*);
61 virtual void visit(ir_assignment
*);
62 virtual void visit(ir_emit_vertex
*);
63 virtual void visit(ir_end_primitive
*);
64 virtual void visit(ir_expression
*);
65 virtual void visit(ir_swizzle
*);
66 virtual void visit(ir_texture
*);
67 virtual void visit(ir_constant
*);
68 virtual void visit(ir_dereference_variable
*);
69 virtual void visit(ir_dereference_record
*);
70 virtual void visit(ir_dereference_array
*);
71 virtual void visit(ir_barrier
*);
73 void create_function(ir_function_signature
*ir
);
76 void add_instr(nir_instr
*instr
, unsigned num_components
);
77 nir_ssa_def
*evaluate_rvalue(ir_rvalue
*ir
);
79 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
**srcs
);
80 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
);
81 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
83 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
84 nir_ssa_def
*src2
, nir_ssa_def
*src3
);
89 nir_function_impl
*impl
;
91 nir_ssa_def
*result
; /* result of the expression tree last visited */
93 nir_deref_var
*evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
);
95 /* the head of the dereference chain we're creating */
96 nir_deref_var
*deref_head
;
97 /* the tail of the dereference chain we're creating */
98 nir_deref
*deref_tail
;
100 nir_variable
*var
; /* variable created by ir_variable visitor */
102 /* whether the IR we're operating on is per-function or global */
105 /* map of ir_variable -> nir_variable */
106 struct hash_table
*var_table
;
108 /* map of ir_function_signature -> nir_function_overload */
109 struct hash_table
*overload_table
;
113 * This visitor runs before the main visitor, calling create_function() for
114 * each function so that the main visitor can resolve forward references in
118 class nir_function_visitor
: public ir_hierarchical_visitor
121 nir_function_visitor(nir_visitor
*v
) : visitor(v
)
124 virtual ir_visitor_status
visit_enter(ir_function
*);
127 nir_visitor
*visitor
;
130 }; /* end of anonymous namespace */
133 glsl_to_nir(const struct gl_shader_program
*shader_prog
,
134 gl_shader_stage stage
,
135 const nir_shader_compiler_options
*options
)
137 struct gl_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
139 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_outputs_to_temporaries(shader
);
148 shader
->info
.name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
149 if (shader_prog
->Label
)
150 shader
->info
.label
= ralloc_strdup(shader
, shader_prog
->Label
);
151 shader
->info
.num_textures
= _mesa_fls(sh
->Program
->SamplersUsed
);
152 shader
->info
.num_ubos
= sh
->NumUniformBlocks
;
153 shader
->info
.num_abos
= shader_prog
->NumAtomicBuffers
;
154 shader
->info
.num_ssbos
= sh
->NumShaderStorageBlocks
;
155 shader
->info
.num_images
= sh
->NumImages
;
156 shader
->info
.inputs_read
= sh
->Program
->InputsRead
;
157 shader
->info
.outputs_written
= sh
->Program
->OutputsWritten
;
158 shader
->info
.patch_inputs_read
= sh
->Program
->PatchInputsRead
;
159 shader
->info
.patch_outputs_written
= sh
->Program
->PatchOutputsWritten
;
160 shader
->info
.system_values_read
= sh
->Program
->SystemValuesRead
;
161 shader
->info
.uses_texture_gather
= sh
->Program
->UsesGather
;
162 shader
->info
.uses_clip_distance_out
=
163 sh
->Program
->ClipDistanceArraySize
!= 0;
164 shader
->info
.separate_shader
= shader_prog
->SeparateShader
;
165 shader
->info
.has_transform_feedback_varyings
=
166 shader_prog
->TransformFeedback
.NumVarying
> 0;
169 case MESA_SHADER_TESS_CTRL
:
170 shader
->info
.tcs
.vertices_out
= shader_prog
->TessCtrl
.VerticesOut
;
173 case MESA_SHADER_GEOMETRY
:
174 shader
->info
.gs
.vertices_in
= shader_prog
->Geom
.VerticesIn
;
175 shader
->info
.gs
.output_primitive
= sh
->Geom
.OutputType
;
176 shader
->info
.gs
.vertices_out
= sh
->Geom
.VerticesOut
;
177 shader
->info
.gs
.invocations
= sh
->Geom
.Invocations
;
178 shader
->info
.gs
.uses_end_primitive
= shader_prog
->Geom
.UsesEndPrimitive
;
179 shader
->info
.gs
.uses_streams
= shader_prog
->Geom
.UsesStreams
;
182 case MESA_SHADER_FRAGMENT
: {
183 struct gl_fragment_program
*fp
=
184 (struct gl_fragment_program
*)sh
->Program
;
186 shader
->info
.fs
.uses_discard
= fp
->UsesKill
;
187 shader
->info
.fs
.early_fragment_tests
= sh
->EarlyFragmentTests
;
188 shader
->info
.fs
.depth_layout
= fp
->FragDepthLayout
;
192 case MESA_SHADER_COMPUTE
: {
193 struct gl_compute_program
*cp
= (struct gl_compute_program
*)sh
->Program
;
194 shader
->info
.cs
.local_size
[0] = cp
->LocalSize
[0];
195 shader
->info
.cs
.local_size
[1] = cp
->LocalSize
[1];
196 shader
->info
.cs
.local_size
[2] = cp
->LocalSize
[2];
201 break; /* No stage-specific info */
207 nir_visitor::nir_visitor(nir_shader
*shader
)
209 this->supports_ints
= shader
->options
->native_integers
;
210 this->shader
= shader
;
211 this->is_global
= true;
212 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
213 _mesa_key_pointer_equal
);
214 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
215 _mesa_key_pointer_equal
);
218 nir_visitor::~nir_visitor()
220 _mesa_hash_table_destroy(this->var_table
, NULL
);
221 _mesa_hash_table_destroy(this->overload_table
, NULL
);
225 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
228 ralloc_steal(mem_ctx
, this->deref_head
);
229 return this->deref_head
;
232 static nir_constant
*
233 constant_copy(ir_constant
*ir
, void *mem_ctx
)
238 nir_constant
*ret
= ralloc(mem_ctx
, nir_constant
);
240 unsigned total_elems
= ir
->type
->components();
243 ret
->num_elements
= 0;
244 switch (ir
->type
->base_type
) {
246 for (i
= 0; i
< total_elems
; i
++)
247 ret
->value
.u
[i
] = ir
->value
.u
[i
];
251 for (i
= 0; i
< total_elems
; i
++)
252 ret
->value
.i
[i
] = ir
->value
.i
[i
];
255 case GLSL_TYPE_FLOAT
:
256 for (i
= 0; i
< total_elems
; i
++)
257 ret
->value
.f
[i
] = ir
->value
.f
[i
];
261 for (i
= 0; i
< total_elems
; i
++)
262 ret
->value
.b
[i
] = ir
->value
.b
[i
];
265 case GLSL_TYPE_STRUCT
:
266 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
268 ret
->num_elements
= ir
->type
->length
;
271 foreach_in_list(ir_constant
, field
, &ir
->components
) {
272 ret
->elements
[i
] = constant_copy(field
, mem_ctx
);
277 case GLSL_TYPE_ARRAY
:
278 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
280 ret
->num_elements
= ir
->type
->length
;
282 for (i
= 0; i
< ir
->type
->length
; i
++)
283 ret
->elements
[i
] = constant_copy(ir
->array_elements
[i
], mem_ctx
);
287 unreachable("not reached");
294 nir_visitor::visit(ir_variable
*ir
)
296 nir_variable
*var
= ralloc(shader
, nir_variable
);
297 var
->type
= ir
->type
;
298 var
->name
= ralloc_strdup(var
, ir
->name
);
300 var
->data
.read_only
= ir
->data
.read_only
;
301 var
->data
.centroid
= ir
->data
.centroid
;
302 var
->data
.sample
= ir
->data
.sample
;
303 var
->data
.patch
= ir
->data
.patch
;
304 var
->data
.invariant
= ir
->data
.invariant
;
305 var
->data
.location
= ir
->data
.location
;
307 switch(ir
->data
.mode
) {
309 case ir_var_temporary
:
311 var
->data
.mode
= nir_var_global
;
313 var
->data
.mode
= nir_var_local
;
316 case ir_var_function_in
:
317 case ir_var_function_out
:
318 case ir_var_function_inout
:
319 case ir_var_const_in
:
320 var
->data
.mode
= nir_var_local
;
323 case ir_var_shader_in
:
324 if (shader
->stage
== MESA_SHADER_FRAGMENT
&&
325 ir
->data
.location
== VARYING_SLOT_FACE
) {
326 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
327 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
328 var
->data
.mode
= nir_var_system_value
;
329 } else if (shader
->stage
== MESA_SHADER_GEOMETRY
&&
330 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
331 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
332 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
333 var
->data
.mode
= nir_var_system_value
;
335 var
->data
.mode
= nir_var_shader_in
;
339 case ir_var_shader_out
:
340 var
->data
.mode
= nir_var_shader_out
;
344 var
->data
.mode
= nir_var_uniform
;
347 case ir_var_shader_storage
:
348 var
->data
.mode
= nir_var_shader_storage
;
351 case ir_var_system_value
:
352 var
->data
.mode
= nir_var_system_value
;
356 unreachable("not reached");
359 var
->data
.interpolation
= ir
->data
.interpolation
;
360 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
361 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
362 var
->data
.explicit_location
= ir
->data
.explicit_location
;
363 var
->data
.explicit_index
= ir
->data
.explicit_index
;
364 var
->data
.explicit_binding
= ir
->data
.explicit_binding
;
365 var
->data
.has_initializer
= ir
->data
.has_initializer
;
366 var
->data
.location_frac
= ir
->data
.location_frac
;
368 switch (ir
->data
.depth_layout
) {
369 case ir_depth_layout_none
:
370 var
->data
.depth_layout
= nir_depth_layout_none
;
372 case ir_depth_layout_any
:
373 var
->data
.depth_layout
= nir_depth_layout_any
;
375 case ir_depth_layout_greater
:
376 var
->data
.depth_layout
= nir_depth_layout_greater
;
378 case ir_depth_layout_less
:
379 var
->data
.depth_layout
= nir_depth_layout_less
;
381 case ir_depth_layout_unchanged
:
382 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
385 unreachable("not reached");
388 var
->data
.index
= ir
->data
.index
;
389 var
->data
.binding
= ir
->data
.binding
;
390 var
->data
.offset
= ir
->data
.offset
;
391 var
->data
.image
.read_only
= ir
->data
.image_read_only
;
392 var
->data
.image
.write_only
= ir
->data
.image_write_only
;
393 var
->data
.image
.coherent
= ir
->data
.image_coherent
;
394 var
->data
.image
._volatile
= ir
->data
.image_volatile
;
395 var
->data
.image
.restrict_flag
= ir
->data
.image_restrict
;
396 var
->data
.image
.format
= ir
->data
.image_format
;
397 var
->data
.max_array_access
= ir
->data
.max_array_access
;
399 var
->num_state_slots
= ir
->get_num_state_slots();
400 if (var
->num_state_slots
> 0) {
401 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
402 var
->num_state_slots
);
404 ir_state_slot
*state_slots
= ir
->get_state_slots();
405 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
406 for (unsigned j
= 0; j
< 5; j
++)
407 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
408 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
411 var
->state_slots
= NULL
;
414 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
416 var
->interface_type
= ir
->get_interface_type();
418 if (var
->data
.mode
== nir_var_local
)
419 nir_function_impl_add_variable(impl
, var
);
421 nir_shader_add_variable(shader
, var
);
423 _mesa_hash_table_insert(var_table
, ir
, var
);
428 nir_function_visitor::visit_enter(ir_function
*ir
)
430 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
431 visitor
->create_function(sig
);
433 return visit_continue_with_parent
;
437 nir_visitor::create_function(ir_function_signature
*ir
)
439 if (ir
->is_intrinsic
)
442 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
444 assert(ir
->parameters
.is_empty());
445 assert(ir
->return_type
== glsl_type::void_type
);
447 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
451 nir_visitor::visit(ir_function
*ir
)
453 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
458 nir_visitor::visit(ir_function_signature
*ir
)
460 if (ir
->is_intrinsic
)
463 struct hash_entry
*entry
=
464 _mesa_hash_table_search(this->overload_table
, ir
);
467 nir_function
*func
= (nir_function
*) entry
->data
;
469 if (ir
->is_defined
) {
470 nir_function_impl
*impl
= nir_function_impl_create(func
);
473 assert(strcmp(func
->name
, "main") == 0);
474 assert(ir
->parameters
.is_empty());
475 assert(func
->return_type
== glsl_type::void_type
);
477 this->is_global
= false;
479 nir_builder_init(&b
, impl
);
480 b
.cursor
= nir_after_cf_list(&impl
->body
);
481 visit_exec_list(&ir
->body
, this);
483 this->is_global
= true;
490 nir_visitor::visit(ir_loop
*ir
)
492 nir_loop
*loop
= nir_loop_create(this->shader
);
493 nir_builder_cf_insert(&b
, &loop
->cf_node
);
495 b
.cursor
= nir_after_cf_list(&loop
->body
);
496 visit_exec_list(&ir
->body_instructions
, this);
497 b
.cursor
= nir_after_cf_node(&loop
->cf_node
);
501 nir_visitor::visit(ir_if
*ir
)
504 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
506 nir_if
*if_stmt
= nir_if_create(this->shader
);
507 if_stmt
->condition
= condition
;
508 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
510 b
.cursor
= nir_after_cf_list(&if_stmt
->then_list
);
511 visit_exec_list(&ir
->then_instructions
, this);
513 b
.cursor
= nir_after_cf_list(&if_stmt
->else_list
);
514 visit_exec_list(&ir
->else_instructions
, this);
516 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
520 nir_visitor::visit(ir_discard
*ir
)
523 * discards aren't treated as control flow, because before we lower them
524 * they can appear anywhere in the shader and the stuff after them may still
525 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
526 * discards will be immediately followed by a return.
529 nir_intrinsic_instr
*discard
;
531 discard
= nir_intrinsic_instr_create(this->shader
,
532 nir_intrinsic_discard_if
);
534 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
536 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
539 nir_builder_instr_insert(&b
, &discard
->instr
);
543 nir_visitor::visit(ir_emit_vertex
*ir
)
545 nir_intrinsic_instr
*instr
=
546 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
547 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
548 nir_builder_instr_insert(&b
, &instr
->instr
);
552 nir_visitor::visit(ir_end_primitive
*ir
)
554 nir_intrinsic_instr
*instr
=
555 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
556 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
557 nir_builder_instr_insert(&b
, &instr
->instr
);
561 nir_visitor::visit(ir_loop_jump
*ir
)
565 case ir_loop_jump::jump_break
:
566 type
= nir_jump_break
;
568 case ir_loop_jump::jump_continue
:
569 type
= nir_jump_continue
;
572 unreachable("not reached");
575 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
576 nir_builder_instr_insert(&b
, &instr
->instr
);
580 nir_visitor::visit(ir_return
*ir
)
582 if (ir
->value
!= NULL
) {
583 nir_intrinsic_instr
*copy
=
584 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
586 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
587 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
590 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
591 nir_builder_instr_insert(&b
, &instr
->instr
);
595 nir_visitor::visit(ir_call
*ir
)
597 if (ir
->callee
->is_intrinsic
) {
599 if (strcmp(ir
->callee_name(), "__intrinsic_atomic_read") == 0) {
600 op
= nir_intrinsic_atomic_counter_read_var
;
601 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_increment") == 0) {
602 op
= nir_intrinsic_atomic_counter_inc_var
;
603 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_predecrement") == 0) {
604 op
= nir_intrinsic_atomic_counter_dec_var
;
605 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_load") == 0) {
606 op
= nir_intrinsic_image_load
;
607 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_store") == 0) {
608 op
= nir_intrinsic_image_store
;
609 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_add") == 0) {
610 op
= nir_intrinsic_image_atomic_add
;
611 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_min") == 0) {
612 op
= nir_intrinsic_image_atomic_min
;
613 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_max") == 0) {
614 op
= nir_intrinsic_image_atomic_max
;
615 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_and") == 0) {
616 op
= nir_intrinsic_image_atomic_and
;
617 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_or") == 0) {
618 op
= nir_intrinsic_image_atomic_or
;
619 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_xor") == 0) {
620 op
= nir_intrinsic_image_atomic_xor
;
621 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_exchange") == 0) {
622 op
= nir_intrinsic_image_atomic_exchange
;
623 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_comp_swap") == 0) {
624 op
= nir_intrinsic_image_atomic_comp_swap
;
625 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier") == 0) {
626 op
= nir_intrinsic_memory_barrier
;
627 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_size") == 0) {
628 op
= nir_intrinsic_image_size
;
629 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_samples") == 0) {
630 op
= nir_intrinsic_image_samples
;
631 } else if (strcmp(ir
->callee_name(), "__intrinsic_store_ssbo") == 0) {
632 op
= nir_intrinsic_store_ssbo
;
633 } else if (strcmp(ir
->callee_name(), "__intrinsic_load_ssbo") == 0) {
634 op
= nir_intrinsic_load_ssbo
;
635 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_add_ssbo") == 0) {
636 op
= nir_intrinsic_ssbo_atomic_add
;
637 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_and_ssbo") == 0) {
638 op
= nir_intrinsic_ssbo_atomic_and
;
639 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_or_ssbo") == 0) {
640 op
= nir_intrinsic_ssbo_atomic_or
;
641 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_xor_ssbo") == 0) {
642 op
= nir_intrinsic_ssbo_atomic_xor
;
643 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_min_ssbo") == 0) {
644 assert(ir
->return_deref
);
645 if (ir
->return_deref
->type
== glsl_type::int_type
)
646 op
= nir_intrinsic_ssbo_atomic_imin
;
647 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
648 op
= nir_intrinsic_ssbo_atomic_umin
;
650 unreachable("Invalid type");
651 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_max_ssbo") == 0) {
652 assert(ir
->return_deref
);
653 if (ir
->return_deref
->type
== glsl_type::int_type
)
654 op
= nir_intrinsic_ssbo_atomic_imax
;
655 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
656 op
= nir_intrinsic_ssbo_atomic_umax
;
658 unreachable("Invalid type");
659 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_exchange_ssbo") == 0) {
660 op
= nir_intrinsic_ssbo_atomic_exchange
;
661 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_comp_swap_ssbo") == 0) {
662 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
663 } else if (strcmp(ir
->callee_name(), "__intrinsic_shader_clock") == 0) {
664 op
= nir_intrinsic_shader_clock
;
665 } else if (strcmp(ir
->callee_name(), "__intrinsic_group_memory_barrier") == 0) {
666 op
= nir_intrinsic_group_memory_barrier
;
667 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier_atomic_counter") == 0) {
668 op
= nir_intrinsic_memory_barrier_atomic_counter
;
669 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier_buffer") == 0) {
670 op
= nir_intrinsic_memory_barrier_buffer
;
671 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier_image") == 0) {
672 op
= nir_intrinsic_memory_barrier_image
;
673 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier_shared") == 0) {
674 op
= nir_intrinsic_memory_barrier_shared
;
675 } else if (strcmp(ir
->callee_name(), "__intrinsic_load_shared") == 0) {
676 op
= nir_intrinsic_load_shared
;
677 } else if (strcmp(ir
->callee_name(), "__intrinsic_store_shared") == 0) {
678 op
= nir_intrinsic_store_shared
;
679 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_add_shared") == 0) {
680 op
= nir_intrinsic_shared_atomic_add
;
681 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_and_shared") == 0) {
682 op
= nir_intrinsic_shared_atomic_and
;
683 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_or_shared") == 0) {
684 op
= nir_intrinsic_shared_atomic_or
;
685 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_xor_shared") == 0) {
686 op
= nir_intrinsic_shared_atomic_xor
;
687 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_min_shared") == 0) {
688 assert(ir
->return_deref
);
689 if (ir
->return_deref
->type
== glsl_type::int_type
)
690 op
= nir_intrinsic_shared_atomic_imin
;
691 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
692 op
= nir_intrinsic_shared_atomic_umin
;
694 unreachable("Invalid type");
695 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_max_shared") == 0) {
696 assert(ir
->return_deref
);
697 if (ir
->return_deref
->type
== glsl_type::int_type
)
698 op
= nir_intrinsic_shared_atomic_imax
;
699 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
700 op
= nir_intrinsic_shared_atomic_umax
;
702 unreachable("Invalid type");
703 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_exchange_shared") == 0) {
704 op
= nir_intrinsic_shared_atomic_exchange
;
705 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_comp_swap_shared") == 0) {
706 op
= nir_intrinsic_shared_atomic_comp_swap
;
708 unreachable("not reached");
711 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
712 nir_dest
*dest
= &instr
->dest
;
715 case nir_intrinsic_atomic_counter_read_var
:
716 case nir_intrinsic_atomic_counter_inc_var
:
717 case nir_intrinsic_atomic_counter_dec_var
: {
718 ir_dereference
*param
=
719 (ir_dereference
*) ir
->actual_parameters
.get_head();
720 instr
->variables
[0] = evaluate_deref(&instr
->instr
, param
);
721 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
722 nir_builder_instr_insert(&b
, &instr
->instr
);
725 case nir_intrinsic_image_load
:
726 case nir_intrinsic_image_store
:
727 case nir_intrinsic_image_atomic_add
:
728 case nir_intrinsic_image_atomic_min
:
729 case nir_intrinsic_image_atomic_max
:
730 case nir_intrinsic_image_atomic_and
:
731 case nir_intrinsic_image_atomic_or
:
732 case nir_intrinsic_image_atomic_xor
:
733 case nir_intrinsic_image_atomic_exchange
:
734 case nir_intrinsic_image_atomic_comp_swap
:
735 case nir_intrinsic_image_samples
:
736 case nir_intrinsic_image_size
: {
737 nir_ssa_undef_instr
*instr_undef
=
738 nir_ssa_undef_instr_create(shader
, 1);
739 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
741 /* Set the image variable dereference. */
742 exec_node
*param
= ir
->actual_parameters
.get_head();
743 ir_dereference
*image
= (ir_dereference
*)param
;
744 const glsl_type
*type
=
745 image
->variable_referenced()->type
->without_array();
747 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
748 param
= param
->get_next();
750 /* Set the intrinsic destination. */
751 if (ir
->return_deref
) {
752 const nir_intrinsic_info
*info
=
753 &nir_intrinsic_infos
[instr
->intrinsic
];
754 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
755 info
->dest_components
, 32, NULL
);
758 if (op
== nir_intrinsic_image_size
||
759 op
== nir_intrinsic_image_samples
) {
760 nir_builder_instr_insert(&b
, &instr
->instr
);
764 /* Set the address argument, extending the coordinate vector to four
767 nir_ssa_def
*src_addr
=
768 evaluate_rvalue((ir_dereference
*)param
);
769 nir_ssa_def
*srcs
[4];
771 for (int i
= 0; i
< 4; i
++) {
772 if (i
< type
->coordinate_components())
773 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
775 srcs
[i
] = &instr_undef
->def
;
778 instr
->src
[0] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
779 param
= param
->get_next();
781 /* Set the sample argument, which is undefined for single-sample
784 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
786 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
787 param
= param
->get_next();
789 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
792 /* Set the intrinsic parameters. */
793 if (!param
->is_tail_sentinel()) {
795 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
796 param
= param
->get_next();
799 if (!param
->is_tail_sentinel()) {
801 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
802 param
= param
->get_next();
804 nir_builder_instr_insert(&b
, &instr
->instr
);
807 case nir_intrinsic_memory_barrier
:
808 case nir_intrinsic_group_memory_barrier
:
809 case nir_intrinsic_memory_barrier_atomic_counter
:
810 case nir_intrinsic_memory_barrier_buffer
:
811 case nir_intrinsic_memory_barrier_image
:
812 case nir_intrinsic_memory_barrier_shared
:
813 nir_builder_instr_insert(&b
, &instr
->instr
);
815 case nir_intrinsic_shader_clock
:
816 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
817 nir_builder_instr_insert(&b
, &instr
->instr
);
819 case nir_intrinsic_store_ssbo
: {
820 exec_node
*param
= ir
->actual_parameters
.get_head();
821 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
823 param
= param
->get_next();
824 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
826 param
= param
->get_next();
827 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
829 param
= param
->get_next();
830 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
833 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
834 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
835 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
836 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
837 instr
->num_components
= val
->type
->vector_elements
;
839 nir_builder_instr_insert(&b
, &instr
->instr
);
842 case nir_intrinsic_load_ssbo
: {
843 exec_node
*param
= ir
->actual_parameters
.get_head();
844 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
846 param
= param
->get_next();
847 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
849 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
850 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
852 const glsl_type
*type
= ir
->return_deref
->var
->type
;
853 instr
->num_components
= type
->vector_elements
;
855 /* Setup destination register */
856 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
857 type
->vector_elements
, 32, NULL
);
859 /* Insert the created nir instruction now since in the case of boolean
860 * result we will need to emit another instruction after it
862 nir_builder_instr_insert(&b
, &instr
->instr
);
865 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
866 * consider a true boolean to be ~0. Fix this up with a != 0
869 if (type
->base_type
== GLSL_TYPE_BOOL
) {
870 nir_alu_instr
*load_ssbo_compare
=
871 nir_alu_instr_create(shader
, nir_op_ine
);
872 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
873 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
874 load_ssbo_compare
->src
[1].src
=
875 nir_src_for_ssa(nir_imm_int(&b
, 0));
876 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
877 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
878 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
879 &load_ssbo_compare
->dest
.dest
,
880 type
->vector_elements
, 32, NULL
);
881 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
882 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
883 dest
= &load_ssbo_compare
->dest
.dest
;
887 case nir_intrinsic_ssbo_atomic_add
:
888 case nir_intrinsic_ssbo_atomic_imin
:
889 case nir_intrinsic_ssbo_atomic_umin
:
890 case nir_intrinsic_ssbo_atomic_imax
:
891 case nir_intrinsic_ssbo_atomic_umax
:
892 case nir_intrinsic_ssbo_atomic_and
:
893 case nir_intrinsic_ssbo_atomic_or
:
894 case nir_intrinsic_ssbo_atomic_xor
:
895 case nir_intrinsic_ssbo_atomic_exchange
:
896 case nir_intrinsic_ssbo_atomic_comp_swap
: {
897 int param_count
= ir
->actual_parameters
.length();
898 assert(param_count
== 3 || param_count
== 4);
901 exec_node
*param
= ir
->actual_parameters
.get_head();
902 ir_instruction
*inst
= (ir_instruction
*) param
;
903 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
906 param
= param
->get_next();
907 inst
= (ir_instruction
*) param
;
908 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
910 /* data1 parameter (this is always present) */
911 param
= param
->get_next();
912 inst
= (ir_instruction
*) param
;
913 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
915 /* data2 parameter (only with atomic_comp_swap) */
916 if (param_count
== 4) {
917 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
918 param
= param
->get_next();
919 inst
= (ir_instruction
*) param
;
920 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
924 assert(ir
->return_deref
);
925 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
926 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
927 nir_builder_instr_insert(&b
, &instr
->instr
);
930 case nir_intrinsic_load_shared
: {
931 exec_node
*param
= ir
->actual_parameters
.get_head();
932 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
934 nir_intrinsic_set_base(instr
, 0);
935 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
937 const glsl_type
*type
= ir
->return_deref
->var
->type
;
938 instr
->num_components
= type
->vector_elements
;
940 /* Setup destination register */
941 unsigned bit_size
= glsl_get_bit_size(type
->base_type
);
942 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
943 type
->vector_elements
, bit_size
, NULL
);
945 nir_builder_instr_insert(&b
, &instr
->instr
);
948 case nir_intrinsic_store_shared
: {
949 exec_node
*param
= ir
->actual_parameters
.get_head();
950 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
952 param
= param
->get_next();
953 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
955 param
= param
->get_next();
956 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
959 nir_intrinsic_set_base(instr
, 0);
960 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
962 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
964 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
965 instr
->num_components
= val
->type
->vector_elements
;
967 nir_builder_instr_insert(&b
, &instr
->instr
);
970 case nir_intrinsic_shared_atomic_add
:
971 case nir_intrinsic_shared_atomic_imin
:
972 case nir_intrinsic_shared_atomic_umin
:
973 case nir_intrinsic_shared_atomic_imax
:
974 case nir_intrinsic_shared_atomic_umax
:
975 case nir_intrinsic_shared_atomic_and
:
976 case nir_intrinsic_shared_atomic_or
:
977 case nir_intrinsic_shared_atomic_xor
:
978 case nir_intrinsic_shared_atomic_exchange
:
979 case nir_intrinsic_shared_atomic_comp_swap
: {
980 int param_count
= ir
->actual_parameters
.length();
981 assert(param_count
== 2 || param_count
== 3);
984 exec_node
*param
= ir
->actual_parameters
.get_head();
985 ir_instruction
*inst
= (ir_instruction
*) param
;
986 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
988 /* data1 parameter (this is always present) */
989 param
= param
->get_next();
990 inst
= (ir_instruction
*) param
;
991 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
993 /* data2 parameter (only with atomic_comp_swap) */
994 if (param_count
== 3) {
995 assert(op
== nir_intrinsic_shared_atomic_comp_swap
);
996 param
= param
->get_next();
997 inst
= (ir_instruction
*) param
;
999 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1003 assert(ir
->return_deref
);
1004 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
->base_type
);
1005 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1006 ir
->return_deref
->type
->vector_elements
,
1008 nir_builder_instr_insert(&b
, &instr
->instr
);
1012 unreachable("not reached");
1015 if (ir
->return_deref
) {
1016 nir_intrinsic_instr
*store_instr
=
1017 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
1018 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1019 nir_intrinsic_set_write_mask(store_instr
,
1020 (1 << store_instr
->num_components
) - 1);
1022 store_instr
->variables
[0] =
1023 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
1024 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
1026 nir_builder_instr_insert(&b
, &store_instr
->instr
);
1032 struct hash_entry
*entry
=
1033 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1035 nir_function
*callee
= (nir_function
*) entry
->data
;
1037 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
1040 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
1041 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
1045 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
1046 nir_builder_instr_insert(&b
, &instr
->instr
);
1050 nir_visitor::visit(ir_assignment
*ir
)
1052 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1054 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1055 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1056 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1057 nir_intrinsic_instr
*copy
=
1058 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1060 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1061 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1063 if (ir
->condition
) {
1064 nir_if
*if_stmt
= nir_if_create(this->shader
);
1065 if_stmt
->condition
= nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
1066 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
1067 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, ©
->instr
);
1068 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
1070 nir_builder_instr_insert(&b
, ©
->instr
);
1075 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1077 ir
->lhs
->accept(this);
1078 nir_deref_var
*lhs_deref
= this->deref_head
;
1079 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1081 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1082 /* GLSL IR will give us the input to the write-masked assignment in a
1083 * single packed vector. So, for example, if the writemask is xzw, then
1084 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1088 unsigned component
= 0;
1089 for (unsigned i
= 0; i
< 4; i
++) {
1090 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1092 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1095 nir_intrinsic_instr
*store
=
1096 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1097 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1098 nir_intrinsic_set_write_mask(store
, ir
->write_mask
);
1099 nir_deref
*store_deref
= nir_copy_deref(store
, &lhs_deref
->deref
);
1100 store
->variables
[0] = nir_deref_as_var(store_deref
);
1101 store
->src
[0] = nir_src_for_ssa(src
);
1103 if (ir
->condition
) {
1104 nir_if
*if_stmt
= nir_if_create(this->shader
);
1105 if_stmt
->condition
= nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
1106 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
1107 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, &store
->instr
);
1108 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
1110 nir_builder_instr_insert(&b
, &store
->instr
);
1115 * Given an instruction, returns a pointer to its destination or NULL if there
1116 * is no destination.
1118 * Note that this only handles instructions we generate at this level.
1121 get_instr_dest(nir_instr
*instr
)
1123 nir_alu_instr
*alu_instr
;
1124 nir_intrinsic_instr
*intrinsic_instr
;
1125 nir_tex_instr
*tex_instr
;
1127 switch (instr
->type
) {
1128 case nir_instr_type_alu
:
1129 alu_instr
= nir_instr_as_alu(instr
);
1130 return &alu_instr
->dest
.dest
;
1132 case nir_instr_type_intrinsic
:
1133 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1134 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1135 return &intrinsic_instr
->dest
;
1139 case nir_instr_type_tex
:
1140 tex_instr
= nir_instr_as_tex(instr
);
1141 return &tex_instr
->dest
;
1144 unreachable("not reached");
1151 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
)
1153 nir_dest
*dest
= get_instr_dest(instr
);
1156 nir_ssa_dest_init(instr
, dest
, num_components
, 32, NULL
);
1158 nir_builder_instr_insert(&b
, instr
);
1161 assert(dest
->is_ssa
);
1162 this->result
= &dest
->ssa
;
1167 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1170 if (ir
->as_dereference() || ir
->as_constant()) {
1172 * A dereference is being used on the right hand side, which means we
1173 * must emit a variable load.
1176 nir_intrinsic_instr
*load_instr
=
1177 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1178 load_instr
->num_components
= ir
->type
->vector_elements
;
1179 load_instr
->variables
[0] = this->deref_head
;
1180 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1181 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
);
1184 return this->result
;
1188 nir_visitor::visit(ir_expression
*ir
)
1190 /* Some special cases */
1191 switch (ir
->operation
) {
1192 case ir_binop_ubo_load
: {
1193 nir_intrinsic_instr
*load
=
1194 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1195 load
->num_components
= ir
->type
->vector_elements
;
1196 load
->dest
.ssa
.bit_size
= glsl_get_bit_size(ir
->type
->base_type
);
1197 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1198 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1199 add_instr(&load
->instr
, ir
->type
->vector_elements
);
1202 * In UBO's, a true boolean value is any non-zero value, but we consider
1203 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1206 if (ir
->type
->base_type
== GLSL_TYPE_BOOL
)
1207 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1212 case ir_unop_interpolate_at_centroid
:
1213 case ir_binop_interpolate_at_offset
:
1214 case ir_binop_interpolate_at_sample
: {
1215 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1216 ir_swizzle
*swizzle
= NULL
;
1218 /* the api does not allow a swizzle here, but the varying packing code
1219 * may have pushed one into here.
1221 swizzle
= ir
->operands
[0]->as_swizzle();
1223 deref
= swizzle
->val
->as_dereference();
1227 deref
->accept(this);
1229 nir_intrinsic_op op
;
1230 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1231 switch (ir
->operation
) {
1232 case ir_unop_interpolate_at_centroid
:
1233 op
= nir_intrinsic_interp_var_at_centroid
;
1235 case ir_binop_interpolate_at_offset
:
1236 op
= nir_intrinsic_interp_var_at_offset
;
1238 case ir_binop_interpolate_at_sample
:
1239 op
= nir_intrinsic_interp_var_at_sample
;
1242 unreachable("Invalid interpolation intrinsic");
1245 /* This case can happen if the vertex shader does not write the
1246 * given varying. In this case, the linker will lower it to a
1247 * global variable. Since interpolating a variable makes no
1248 * sense, we'll just turn it into a load which will probably
1249 * eventually end up as an SSA definition.
1251 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1252 op
= nir_intrinsic_load_var
;
1255 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1256 intrin
->num_components
= deref
->type
->vector_elements
;
1257 intrin
->variables
[0] = this->deref_head
;
1258 ralloc_steal(intrin
, intrin
->variables
[0]);
1260 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1261 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1262 intrin
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1264 add_instr(&intrin
->instr
, deref
->type
->vector_elements
);
1267 unsigned swiz
[4] = {
1268 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1271 result
= nir_swizzle(&b
, result
, swiz
,
1272 swizzle
->type
->vector_elements
, false);
1282 nir_ssa_def
*srcs
[4];
1283 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1284 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1286 glsl_base_type types
[4];
1287 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1289 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1291 types
[i
] = GLSL_TYPE_FLOAT
;
1293 glsl_base_type out_type
;
1295 out_type
= ir
->type
->base_type
;
1297 out_type
= GLSL_TYPE_FLOAT
;
1299 switch (ir
->operation
) {
1300 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1301 case ir_unop_logic_not
:
1302 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1305 result
= (types
[0] == GLSL_TYPE_FLOAT
) ? nir_fneg(&b
, srcs
[0])
1306 : nir_ineg(&b
, srcs
[0]);
1309 result
= (types
[0] == GLSL_TYPE_FLOAT
) ? nir_fabs(&b
, srcs
[0])
1310 : nir_iabs(&b
, srcs
[0]);
1312 case ir_unop_saturate
:
1313 assert(types
[0] == GLSL_TYPE_FLOAT
);
1314 result
= nir_fsat(&b
, srcs
[0]);
1317 result
= (types
[0] == GLSL_TYPE_FLOAT
) ? nir_fsign(&b
, srcs
[0])
1318 : nir_isign(&b
, srcs
[0]);
1320 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1321 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1322 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1323 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1324 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1325 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1326 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1328 result
= supports_ints
? nir_i2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1331 result
= supports_ints
? nir_u2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1334 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1336 case ir_unop_f2i
: result
= nir_f2i(&b
, srcs
[0]); break;
1337 case ir_unop_f2u
: result
= nir_f2u(&b
, srcs
[0]); break;
1338 case ir_unop_f2b
: result
= nir_f2b(&b
, srcs
[0]); break;
1339 case ir_unop_i2b
: result
= nir_i2b(&b
, srcs
[0]); break;
1340 case ir_unop_b2i
: result
= nir_b2i(&b
, srcs
[0]); break;
1343 case ir_unop_bitcast_i2f
:
1344 case ir_unop_bitcast_f2i
:
1345 case ir_unop_bitcast_u2f
:
1346 case ir_unop_bitcast_f2u
:
1347 case ir_unop_subroutine_to_int
:
1349 result
= nir_imov(&b
, srcs
[0]);
1351 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1352 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1353 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1354 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1355 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1356 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1357 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1358 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1359 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1360 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1361 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1362 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1363 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1364 case ir_unop_pack_snorm_2x16
:
1365 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1367 case ir_unop_pack_snorm_4x8
:
1368 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1370 case ir_unop_pack_unorm_2x16
:
1371 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1373 case ir_unop_pack_unorm_4x8
:
1374 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1376 case ir_unop_pack_half_2x16
:
1377 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1379 case ir_unop_unpack_snorm_2x16
:
1380 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1382 case ir_unop_unpack_snorm_4x8
:
1383 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1385 case ir_unop_unpack_unorm_2x16
:
1386 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1388 case ir_unop_unpack_unorm_4x8
:
1389 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1391 case ir_unop_unpack_half_2x16
:
1392 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1394 case ir_unop_bitfield_reverse
:
1395 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1397 case ir_unop_bit_count
:
1398 result
= nir_bit_count(&b
, srcs
[0]);
1400 case ir_unop_find_msb
:
1402 case GLSL_TYPE_UINT
:
1403 result
= nir_ufind_msb(&b
, srcs
[0]);
1406 result
= nir_ifind_msb(&b
, srcs
[0]);
1409 unreachable("Invalid type for findMSB()");
1412 case ir_unop_find_lsb
:
1413 result
= nir_find_lsb(&b
, srcs
[0]);
1417 switch (ir
->type
->vector_elements
) {
1419 switch (ir
->operands
[0]->type
->vector_elements
) {
1420 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1421 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1422 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1423 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1424 default: unreachable("not reached");
1428 switch (ir
->operands
[0]->type
->vector_elements
) {
1429 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1430 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1431 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1432 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1433 default: unreachable("not reached");
1437 switch (ir
->operands
[0]->type
->vector_elements
) {
1438 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1439 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1440 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1441 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1442 default: unreachable("not reached");
1446 switch (ir
->operands
[0]->type
->vector_elements
) {
1447 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1448 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1449 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1450 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1451 default: unreachable("not reached");
1455 unreachable("not reached");
1458 case ir_unop_get_buffer_size
: {
1459 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1461 nir_intrinsic_get_buffer_size
);
1462 load
->num_components
= ir
->type
->vector_elements
;
1463 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1464 add_instr(&load
->instr
, ir
->type
->vector_elements
);
1469 result
= (out_type
== GLSL_TYPE_FLOAT
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1470 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1473 result
= (out_type
== GLSL_TYPE_FLOAT
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1474 : nir_isub(&b
, srcs
[0], srcs
[1]);
1477 result
= (out_type
== GLSL_TYPE_FLOAT
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1478 : nir_imul(&b
, srcs
[0], srcs
[1]);
1481 if (out_type
== GLSL_TYPE_FLOAT
)
1482 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1483 else if (out_type
== GLSL_TYPE_INT
)
1484 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1486 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1489 result
= (out_type
== GLSL_TYPE_FLOAT
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1490 : nir_umod(&b
, srcs
[0], srcs
[1]);
1493 if (out_type
== GLSL_TYPE_FLOAT
)
1494 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1495 else if (out_type
== GLSL_TYPE_INT
)
1496 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1498 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1501 if (out_type
== GLSL_TYPE_FLOAT
)
1502 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1503 else if (out_type
== GLSL_TYPE_INT
)
1504 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1506 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1508 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1509 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1510 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1511 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1512 case ir_binop_logic_and
:
1513 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1514 : nir_fand(&b
, srcs
[0], srcs
[1]);
1516 case ir_binop_logic_or
:
1517 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1518 : nir_for(&b
, srcs
[0], srcs
[1]);
1520 case ir_binop_logic_xor
:
1521 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1522 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1524 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1525 case ir_binop_rshift
:
1526 result
= (out_type
== GLSL_TYPE_INT
) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1527 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1529 case ir_binop_imul_high
:
1530 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1531 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1533 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1534 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1536 if (supports_ints
) {
1537 if (types
[0] == GLSL_TYPE_FLOAT
)
1538 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1539 else if (types
[0] == GLSL_TYPE_INT
)
1540 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1542 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1544 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1547 case ir_binop_greater
:
1548 if (supports_ints
) {
1549 if (types
[0] == GLSL_TYPE_FLOAT
)
1550 result
= nir_flt(&b
, srcs
[1], srcs
[0]);
1551 else if (types
[0] == GLSL_TYPE_INT
)
1552 result
= nir_ilt(&b
, srcs
[1], srcs
[0]);
1554 result
= nir_ult(&b
, srcs
[1], srcs
[0]);
1556 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1559 case ir_binop_lequal
:
1560 if (supports_ints
) {
1561 if (types
[0] == GLSL_TYPE_FLOAT
)
1562 result
= nir_fge(&b
, srcs
[1], srcs
[0]);
1563 else if (types
[0] == GLSL_TYPE_INT
)
1564 result
= nir_ige(&b
, srcs
[1], srcs
[0]);
1566 result
= nir_uge(&b
, srcs
[1], srcs
[0]);
1568 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1571 case ir_binop_gequal
:
1572 if (supports_ints
) {
1573 if (types
[0] == GLSL_TYPE_FLOAT
)
1574 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1575 else if (types
[0] == GLSL_TYPE_INT
)
1576 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1578 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1580 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1583 case ir_binop_equal
:
1584 if (supports_ints
) {
1585 if (types
[0] == GLSL_TYPE_FLOAT
)
1586 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1588 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1590 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1593 case ir_binop_nequal
:
1594 if (supports_ints
) {
1595 if (types
[0] == GLSL_TYPE_FLOAT
)
1596 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1598 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1600 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1603 case ir_binop_all_equal
:
1604 if (supports_ints
) {
1605 if (types
[0] == GLSL_TYPE_FLOAT
) {
1606 switch (ir
->operands
[0]->type
->vector_elements
) {
1607 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1608 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1609 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1610 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1612 unreachable("not reached");
1615 switch (ir
->operands
[0]->type
->vector_elements
) {
1616 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1617 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1618 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1619 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1621 unreachable("not reached");
1625 switch (ir
->operands
[0]->type
->vector_elements
) {
1626 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1627 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1628 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1629 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1631 unreachable("not reached");
1635 case ir_binop_any_nequal
:
1636 if (supports_ints
) {
1637 if (types
[0] == GLSL_TYPE_FLOAT
) {
1638 switch (ir
->operands
[0]->type
->vector_elements
) {
1639 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1640 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1641 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1642 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1644 unreachable("not reached");
1647 switch (ir
->operands
[0]->type
->vector_elements
) {
1648 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1649 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1650 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1651 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1653 unreachable("not reached");
1657 switch (ir
->operands
[0]->type
->vector_elements
) {
1658 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1659 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1660 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1661 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1663 unreachable("not reached");
1668 switch (ir
->operands
[0]->type
->vector_elements
) {
1669 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1670 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1671 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1673 unreachable("not reached");
1677 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1679 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1682 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1686 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1688 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1690 case ir_triop_bitfield_extract
:
1691 result
= (out_type
== GLSL_TYPE_INT
) ?
1692 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1693 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1695 case ir_quadop_bitfield_insert
:
1696 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1698 case ir_quadop_vector
:
1699 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1703 unreachable("not reached");
1708 nir_visitor::visit(ir_swizzle
*ir
)
1710 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1711 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1712 ir
->type
->vector_elements
, !supports_ints
);
1716 nir_visitor::visit(ir_texture
*ir
)
1723 num_srcs
= 1; /* coordinate */
1728 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1729 num_srcs
= 2; /* coordinate, bias/lod */
1733 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1739 if (ir
->lod_info
.lod
!= NULL
)
1740 num_srcs
= 2; /* coordinate, lod */
1742 num_srcs
= 1; /* coordinate */
1746 op
= nir_texop_txf_ms
;
1747 num_srcs
= 2; /* coordinate, sample_index */
1752 if (ir
->lod_info
.lod
!= NULL
)
1753 num_srcs
= 1; /* lod */
1760 num_srcs
= 1; /* coordinate */
1765 num_srcs
= 1; /* coordinate */
1768 case ir_query_levels
:
1769 op
= nir_texop_query_levels
;
1773 case ir_texture_samples
:
1774 op
= nir_texop_texture_samples
;
1778 case ir_samples_identical
:
1779 op
= nir_texop_samples_identical
;
1780 num_srcs
= 1; /* coordinate */
1784 unreachable("not reached");
1787 if (ir
->projector
!= NULL
)
1789 if (ir
->shadow_comparitor
!= NULL
)
1791 if (ir
->offset
!= NULL
)
1794 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
1797 instr
->sampler_dim
=
1798 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
1799 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
1800 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
1801 if (instr
->is_shadow
)
1802 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
1803 switch (ir
->type
->base_type
) {
1804 case GLSL_TYPE_FLOAT
:
1805 instr
->dest_type
= nir_type_float
;
1808 instr
->dest_type
= nir_type_int
;
1810 case GLSL_TYPE_BOOL
:
1811 case GLSL_TYPE_UINT
:
1812 instr
->dest_type
= nir_type_uint
;
1815 unreachable("not reached");
1818 instr
->texture
= evaluate_deref(&instr
->instr
, ir
->sampler
);
1820 unsigned src_number
= 0;
1822 if (ir
->coordinate
!= NULL
) {
1823 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
1824 instr
->src
[src_number
].src
=
1825 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
1826 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
1830 if (ir
->projector
!= NULL
) {
1831 instr
->src
[src_number
].src
=
1832 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
1833 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
1837 if (ir
->shadow_comparitor
!= NULL
) {
1838 instr
->src
[src_number
].src
=
1839 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparitor
));
1840 instr
->src
[src_number
].src_type
= nir_tex_src_comparitor
;
1844 if (ir
->offset
!= NULL
) {
1845 /* we don't support multiple offsets yet */
1846 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
1848 instr
->src
[src_number
].src
=
1849 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
1850 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
1856 instr
->src
[src_number
].src
=
1857 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
1858 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
1865 if (ir
->lod_info
.lod
!= NULL
) {
1866 instr
->src
[src_number
].src
=
1867 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
1868 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
1874 instr
->src
[src_number
].src
=
1875 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
1876 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
1878 instr
->src
[src_number
].src
=
1879 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
1880 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
1885 instr
->src
[src_number
].src
=
1886 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
1887 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
1892 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
1899 assert(src_number
== num_srcs
);
1901 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
));
1905 nir_visitor::visit(ir_constant
*ir
)
1908 * We don't know if this variable is an an array or struct that gets
1909 * dereferenced, so do the safe thing an make it a variable with a
1910 * constant initializer and return a dereference.
1914 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
1915 var
->data
.read_only
= true;
1916 var
->constant_initializer
= constant_copy(ir
, var
);
1918 this->deref_head
= nir_deref_var_create(this->shader
, var
);
1919 this->deref_tail
= &this->deref_head
->deref
;
1923 nir_visitor::visit(ir_dereference_variable
*ir
)
1925 struct hash_entry
*entry
=
1926 _mesa_hash_table_search(this->var_table
, ir
->var
);
1928 nir_variable
*var
= (nir_variable
*) entry
->data
;
1930 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
1931 this->deref_head
= deref
;
1932 this->deref_tail
= &deref
->deref
;
1936 nir_visitor::visit(ir_dereference_record
*ir
)
1938 ir
->record
->accept(this);
1940 int field_index
= this->deref_tail
->type
->field_index(ir
->field
);
1941 assert(field_index
>= 0);
1943 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
1944 deref
->deref
.type
= ir
->type
;
1945 this->deref_tail
->child
= &deref
->deref
;
1946 this->deref_tail
= &deref
->deref
;
1950 nir_visitor::visit(ir_dereference_array
*ir
)
1952 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
1953 deref
->deref
.type
= ir
->type
;
1955 ir_constant
*const_index
= ir
->array_index
->as_constant();
1956 if (const_index
!= NULL
) {
1957 deref
->deref_array_type
= nir_deref_array_type_direct
;
1958 deref
->base_offset
= const_index
->value
.u
[0];
1960 deref
->deref_array_type
= nir_deref_array_type_indirect
;
1962 nir_src_for_ssa(evaluate_rvalue(ir
->array_index
));
1965 ir
->array
->accept(this);
1967 this->deref_tail
->child
= &deref
->deref
;
1968 ralloc_steal(this->deref_tail
, deref
);
1969 this->deref_tail
= &deref
->deref
;
1973 nir_visitor::visit(ir_barrier
*ir
)
1975 nir_intrinsic_instr
*instr
=
1976 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
1977 nir_builder_instr_insert(&b
, &instr
->instr
);