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 "ir_visitor.h"
31 #include "ir_hierarchical_visitor.h"
35 * pass to lower GLSL IR to NIR
37 * This will lower variable dereferences to loads/stores of corresponding
38 * variables in NIR - the variables will be converted to registers in a later
44 class nir_visitor
: public ir_visitor
47 nir_visitor(nir_shader
*shader
);
50 virtual void visit(ir_variable
*);
51 virtual void visit(ir_function
*);
52 virtual void visit(ir_function_signature
*);
53 virtual void visit(ir_loop
*);
54 virtual void visit(ir_if
*);
55 virtual void visit(ir_discard
*);
56 virtual void visit(ir_loop_jump
*);
57 virtual void visit(ir_return
*);
58 virtual void visit(ir_call
*);
59 virtual void visit(ir_assignment
*);
60 virtual void visit(ir_emit_vertex
*);
61 virtual void visit(ir_end_primitive
*);
62 virtual void visit(ir_expression
*);
63 virtual void visit(ir_swizzle
*);
64 virtual void visit(ir_texture
*);
65 virtual void visit(ir_constant
*);
66 virtual void visit(ir_dereference_variable
*);
67 virtual void visit(ir_dereference_record
*);
68 virtual void visit(ir_dereference_array
*);
69 virtual void visit(ir_barrier
*);
71 void create_function(ir_function
*ir
);
74 void create_overload(ir_function_signature
*ir
, nir_function
*function
);
75 void add_instr(nir_instr
*instr
, unsigned num_components
);
76 nir_src
evaluate_rvalue(ir_rvalue
*ir
);
78 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_src
*srcs
);
79 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_src src1
);
80 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_src src1
,
82 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_src src1
,
83 nir_src src2
, nir_src src3
);
88 nir_function_impl
*impl
;
89 exec_list
*cf_node_list
;
90 nir_instr
*result
; /* result of the expression tree last visited */
92 nir_deref_var
*evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
);
94 /* the head of the dereference chain we're creating */
95 nir_deref_var
*deref_head
;
96 /* the tail of the dereference chain we're creating */
97 nir_deref
*deref_tail
;
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_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
138 nir_shader
*shader
= nir_shader_create(NULL
, stage
, options
);
140 nir_visitor
v1(shader
);
141 nir_function_visitor
v2(&v1
);
143 visit_exec_list(sh
->ir
, &v1
);
145 nir_lower_outputs_to_temporaries(shader
);
147 /* TODO: Use _mesa_fls instead */
148 unsigned num_textures
= 0;
149 for (unsigned i
= 0; i
< 8 * sizeof(sh
->Program
->SamplersUsed
); i
++)
150 if (sh
->Program
->SamplersUsed
& (1 << i
))
153 shader
->info
.name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
154 if (shader_prog
->Label
)
155 shader
->info
.label
= ralloc_strdup(shader
, shader_prog
->Label
);
156 shader
->info
.num_textures
= num_textures
;
157 shader
->info
.num_ubos
= sh
->NumUniformBlocks
;
158 shader
->info
.num_abos
= shader_prog
->NumAtomicBuffers
;
159 shader
->info
.num_ssbos
= sh
->NumShaderStorageBlocks
;
160 shader
->info
.num_images
= sh
->NumImages
;
161 shader
->info
.inputs_read
= sh
->Program
->InputsRead
;
162 shader
->info
.outputs_written
= sh
->Program
->OutputsWritten
;
163 shader
->info
.system_values_read
= sh
->Program
->SystemValuesRead
;
164 shader
->info
.uses_texture_gather
= sh
->Program
->UsesGather
;
165 shader
->info
.uses_clip_distance_out
=
166 sh
->Program
->ClipDistanceArraySize
!= 0;
167 shader
->info
.separate_shader
= shader_prog
->SeparateShader
;
168 shader
->info
.has_transform_feedback_varyings
=
169 shader_prog
->TransformFeedback
.NumVarying
> 0;
172 case MESA_SHADER_GEOMETRY
:
173 shader
->info
.gs
.vertices_in
= shader_prog
->Geom
.VerticesIn
;
174 shader
->info
.gs
.output_primitive
= sh
->Geom
.OutputType
;
175 shader
->info
.gs
.vertices_out
= sh
->Geom
.VerticesOut
;
176 shader
->info
.gs
.invocations
= sh
->Geom
.Invocations
;
177 shader
->info
.gs
.uses_end_primitive
= shader_prog
->Geom
.UsesEndPrimitive
;
178 shader
->info
.gs
.uses_streams
= shader_prog
->Geom
.UsesStreams
;
181 case MESA_SHADER_FRAGMENT
: {
182 struct gl_fragment_program
*fp
=
183 (struct gl_fragment_program
*)sh
->Program
;
185 shader
->info
.fs
.uses_discard
= fp
->UsesKill
;
186 shader
->info
.fs
.early_fragment_tests
= sh
->EarlyFragmentTests
;
187 shader
->info
.fs
.depth_layout
= fp
->FragDepthLayout
;
191 case MESA_SHADER_COMPUTE
: {
192 struct gl_compute_program
*cp
= (struct gl_compute_program
*)sh
->Program
;
193 shader
->info
.cs
.local_size
[0] = cp
->LocalSize
[0];
194 shader
->info
.cs
.local_size
[1] = cp
->LocalSize
[1];
195 shader
->info
.cs
.local_size
[2] = cp
->LocalSize
[2];
200 break; /* No stage-specific info */
206 nir_visitor::nir_visitor(nir_shader
*shader
)
208 this->supports_ints
= shader
->options
->native_integers
;
209 this->shader
= shader
;
210 this->is_global
= true;
211 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
212 _mesa_key_pointer_equal
);
213 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
214 _mesa_key_pointer_equal
);
217 nir_visitor::~nir_visitor()
219 _mesa_hash_table_destroy(this->var_table
, NULL
);
220 _mesa_hash_table_destroy(this->overload_table
, NULL
);
224 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
227 ralloc_steal(mem_ctx
, this->deref_head
);
228 return this->deref_head
;
231 static nir_constant
*
232 constant_copy(ir_constant
*ir
, void *mem_ctx
)
237 nir_constant
*ret
= ralloc(mem_ctx
, nir_constant
);
239 unsigned total_elems
= ir
->type
->components();
241 switch (ir
->type
->base_type
) {
243 for (i
= 0; i
< total_elems
; i
++)
244 ret
->value
.u
[i
] = ir
->value
.u
[i
];
248 for (i
= 0; i
< total_elems
; i
++)
249 ret
->value
.i
[i
] = ir
->value
.i
[i
];
252 case GLSL_TYPE_FLOAT
:
253 for (i
= 0; i
< total_elems
; i
++)
254 ret
->value
.f
[i
] = ir
->value
.f
[i
];
258 for (i
= 0; i
< total_elems
; i
++)
259 ret
->value
.b
[i
] = ir
->value
.b
[i
];
262 case GLSL_TYPE_STRUCT
:
263 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
266 foreach_in_list(ir_constant
, field
, &ir
->components
) {
267 ret
->elements
[i
] = constant_copy(field
, mem_ctx
);
272 case GLSL_TYPE_ARRAY
:
273 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
276 for (i
= 0; i
< ir
->type
->length
; i
++)
277 ret
->elements
[i
] = constant_copy(ir
->array_elements
[i
], mem_ctx
);
281 unreachable("not reached");
288 nir_visitor::visit(ir_variable
*ir
)
290 nir_variable
*var
= ralloc(shader
, nir_variable
);
291 var
->type
= ir
->type
;
292 var
->name
= ralloc_strdup(var
, ir
->name
);
294 if (ir
->is_interface_instance() && ir
->get_max_ifc_array_access() != NULL
) {
295 unsigned size
= ir
->get_interface_type()->length
;
296 var
->max_ifc_array_access
= ralloc_array(var
, unsigned, size
);
297 memcpy(var
->max_ifc_array_access
, ir
->get_max_ifc_array_access(),
298 size
* sizeof(unsigned));
300 var
->max_ifc_array_access
= NULL
;
303 var
->data
.read_only
= ir
->data
.read_only
;
304 var
->data
.centroid
= ir
->data
.centroid
;
305 var
->data
.sample
= ir
->data
.sample
;
306 var
->data
.invariant
= ir
->data
.invariant
;
307 var
->data
.location
= ir
->data
.location
;
309 switch(ir
->data
.mode
) {
311 case ir_var_temporary
:
313 var
->data
.mode
= nir_var_global
;
315 var
->data
.mode
= nir_var_local
;
318 case ir_var_function_in
:
319 case ir_var_function_out
:
320 case ir_var_function_inout
:
321 case ir_var_const_in
:
322 var
->data
.mode
= nir_var_local
;
325 case ir_var_shader_in
:
326 if (shader
->stage
== MESA_SHADER_FRAGMENT
&&
327 ir
->data
.location
== VARYING_SLOT_FACE
) {
328 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
329 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
330 var
->data
.mode
= nir_var_system_value
;
331 } else if (shader
->stage
== MESA_SHADER_GEOMETRY
&&
332 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
333 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
334 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
335 var
->data
.mode
= nir_var_system_value
;
337 var
->data
.mode
= nir_var_shader_in
;
341 case ir_var_shader_out
:
342 var
->data
.mode
= nir_var_shader_out
;
346 var
->data
.mode
= nir_var_uniform
;
349 case ir_var_shader_storage
:
350 var
->data
.mode
= nir_var_shader_storage
;
353 case ir_var_system_value
:
354 var
->data
.mode
= nir_var_system_value
;
358 unreachable("not reached");
361 var
->data
.interpolation
= ir
->data
.interpolation
;
362 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
363 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
364 var
->data
.explicit_location
= ir
->data
.explicit_location
;
365 var
->data
.explicit_index
= ir
->data
.explicit_index
;
366 var
->data
.explicit_binding
= ir
->data
.explicit_binding
;
367 var
->data
.has_initializer
= ir
->data
.has_initializer
;
368 var
->data
.is_unmatched_generic_inout
= ir
->data
.is_unmatched_generic_inout
;
369 var
->data
.location_frac
= ir
->data
.location_frac
;
370 var
->data
.from_named_ifc_block_array
= ir
->data
.from_named_ifc_block_array
;
371 var
->data
.from_named_ifc_block_nonarray
= ir
->data
.from_named_ifc_block_nonarray
;
373 switch (ir
->data
.depth_layout
) {
374 case ir_depth_layout_none
:
375 var
->data
.depth_layout
= nir_depth_layout_none
;
377 case ir_depth_layout_any
:
378 var
->data
.depth_layout
= nir_depth_layout_any
;
380 case ir_depth_layout_greater
:
381 var
->data
.depth_layout
= nir_depth_layout_greater
;
383 case ir_depth_layout_less
:
384 var
->data
.depth_layout
= nir_depth_layout_less
;
386 case ir_depth_layout_unchanged
:
387 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
390 unreachable("not reached");
393 var
->data
.index
= ir
->data
.index
;
394 var
->data
.binding
= ir
->data
.binding
;
395 var
->data
.atomic
.offset
= ir
->data
.atomic
.offset
;
396 var
->data
.image
.read_only
= ir
->data
.image_read_only
;
397 var
->data
.image
.write_only
= ir
->data
.image_write_only
;
398 var
->data
.image
.coherent
= ir
->data
.image_coherent
;
399 var
->data
.image
._volatile
= ir
->data
.image_volatile
;
400 var
->data
.image
.restrict_flag
= ir
->data
.image_restrict
;
401 var
->data
.image
.format
= ir
->data
.image_format
;
402 var
->data
.max_array_access
= ir
->data
.max_array_access
;
404 var
->num_state_slots
= ir
->get_num_state_slots();
405 if (var
->num_state_slots
> 0) {
406 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
407 var
->num_state_slots
);
409 ir_state_slot
*state_slots
= ir
->get_state_slots();
410 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
411 for (unsigned j
= 0; j
< 5; j
++)
412 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
413 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
416 var
->state_slots
= NULL
;
419 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
421 var
->interface_type
= ir
->get_interface_type();
423 if (var
->data
.mode
== nir_var_local
)
424 nir_function_impl_add_variable(impl
, var
);
426 nir_shader_add_variable(shader
, var
);
428 _mesa_hash_table_insert(var_table
, ir
, var
);
433 nir_function_visitor::visit_enter(ir_function
*ir
)
435 visitor
->create_function(ir
);
436 return visit_continue_with_parent
;
441 nir_visitor::create_function(ir_function
*ir
)
443 nir_function
*func
= nir_function_create(this->shader
, ir
->name
);
444 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
445 create_overload(sig
, func
);
452 nir_visitor::create_overload(ir_function_signature
*ir
, nir_function
*function
)
454 if (ir
->is_intrinsic
)
457 nir_function_overload
*overload
= nir_function_overload_create(function
);
459 unsigned num_params
= ir
->parameters
.length();
460 overload
->num_params
= num_params
;
461 overload
->params
= ralloc_array(shader
, nir_parameter
, num_params
);
464 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
465 switch (param
->data
.mode
) {
466 case ir_var_function_in
:
467 overload
->params
[i
].param_type
= nir_parameter_in
;
470 case ir_var_function_out
:
471 overload
->params
[i
].param_type
= nir_parameter_out
;
474 case ir_var_function_inout
:
475 overload
->params
[i
].param_type
= nir_parameter_inout
;
479 unreachable("not reached");
482 overload
->params
[i
].type
= param
->type
;
486 overload
->return_type
= ir
->return_type
;
488 _mesa_hash_table_insert(this->overload_table
, ir
, overload
);
492 nir_visitor::visit(ir_function
*ir
)
494 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
499 nir_visitor::visit(ir_function_signature
*ir
)
501 if (ir
->is_intrinsic
)
504 struct hash_entry
*entry
=
505 _mesa_hash_table_search(this->overload_table
, ir
);
508 nir_function_overload
*overload
= (nir_function_overload
*) entry
->data
;
510 if (ir
->is_defined
) {
511 nir_function_impl
*impl
= nir_function_impl_create(overload
);
514 unsigned num_params
= overload
->num_params
;
515 impl
->num_params
= num_params
;
516 impl
->params
= ralloc_array(this->shader
, nir_variable
*, num_params
);
518 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
520 impl
->params
[i
] = this->var
;
524 if (overload
->return_type
== glsl_type::void_type
) {
525 impl
->return_var
= NULL
;
527 impl
->return_var
= ralloc(this->shader
, nir_variable
);
528 impl
->return_var
->name
= ralloc_strdup(impl
->return_var
,
530 impl
->return_var
->type
= overload
->return_type
;
533 this->is_global
= false;
535 this->cf_node_list
= &impl
->body
;
536 visit_exec_list(&ir
->body
, this);
538 this->is_global
= true;
540 overload
->impl
= NULL
;
545 nir_visitor::visit(ir_loop
*ir
)
547 exec_list
*old_list
= this->cf_node_list
;
549 nir_loop
*loop
= nir_loop_create(this->shader
);
550 nir_cf_node_insert_end(old_list
, &loop
->cf_node
);
551 this->cf_node_list
= &loop
->body
;
552 visit_exec_list(&ir
->body_instructions
, this);
554 this->cf_node_list
= old_list
;
558 nir_visitor::visit(ir_if
*ir
)
560 nir_src condition
= evaluate_rvalue(ir
->condition
);
562 exec_list
*old_list
= this->cf_node_list
;
564 nir_if
*if_stmt
= nir_if_create(this->shader
);
565 if_stmt
->condition
= condition
;
566 nir_cf_node_insert_end(old_list
, &if_stmt
->cf_node
);
568 this->cf_node_list
= &if_stmt
->then_list
;
569 visit_exec_list(&ir
->then_instructions
, this);
571 this->cf_node_list
= &if_stmt
->else_list
;
572 visit_exec_list(&ir
->else_instructions
, this);
574 this->cf_node_list
= old_list
;
578 nir_visitor::visit(ir_discard
*ir
)
581 * discards aren't treated as control flow, because before we lower them
582 * they can appear anywhere in the shader and the stuff after them may still
583 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
584 * discards will be immediately followed by a return.
587 nir_intrinsic_instr
*discard
;
589 discard
= nir_intrinsic_instr_create(this->shader
,
590 nir_intrinsic_discard_if
);
591 discard
->src
[0] = evaluate_rvalue(ir
->condition
);
593 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
595 nir_instr_insert_after_cf_list(this->cf_node_list
, &discard
->instr
);
599 nir_visitor::visit(ir_emit_vertex
*ir
)
601 nir_intrinsic_instr
*instr
=
602 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
603 instr
->const_index
[0] = ir
->stream_id();
604 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
608 nir_visitor::visit(ir_end_primitive
*ir
)
610 nir_intrinsic_instr
*instr
=
611 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
612 instr
->const_index
[0] = ir
->stream_id();
613 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
617 nir_visitor::visit(ir_loop_jump
*ir
)
621 case ir_loop_jump::jump_break
:
622 type
= nir_jump_break
;
624 case ir_loop_jump::jump_continue
:
625 type
= nir_jump_continue
;
628 unreachable("not reached");
631 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
632 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
636 nir_visitor::visit(ir_return
*ir
)
638 if (ir
->value
!= NULL
) {
639 nir_intrinsic_instr
*copy
=
640 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
642 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
643 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
646 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
647 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
651 nir_visitor::visit(ir_call
*ir
)
653 if (ir
->callee
->is_intrinsic
) {
655 if (strcmp(ir
->callee_name(), "__intrinsic_atomic_read") == 0) {
656 op
= nir_intrinsic_atomic_counter_read_var
;
657 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_increment") == 0) {
658 op
= nir_intrinsic_atomic_counter_inc_var
;
659 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_predecrement") == 0) {
660 op
= nir_intrinsic_atomic_counter_dec_var
;
661 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_load") == 0) {
662 op
= nir_intrinsic_image_load
;
663 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_store") == 0) {
664 op
= nir_intrinsic_image_store
;
665 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_add") == 0) {
666 op
= nir_intrinsic_image_atomic_add
;
667 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_min") == 0) {
668 op
= nir_intrinsic_image_atomic_min
;
669 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_max") == 0) {
670 op
= nir_intrinsic_image_atomic_max
;
671 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_and") == 0) {
672 op
= nir_intrinsic_image_atomic_and
;
673 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_or") == 0) {
674 op
= nir_intrinsic_image_atomic_or
;
675 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_xor") == 0) {
676 op
= nir_intrinsic_image_atomic_xor
;
677 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_exchange") == 0) {
678 op
= nir_intrinsic_image_atomic_exchange
;
679 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_comp_swap") == 0) {
680 op
= nir_intrinsic_image_atomic_comp_swap
;
681 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier") == 0) {
682 op
= nir_intrinsic_memory_barrier
;
683 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_size") == 0) {
684 op
= nir_intrinsic_image_size
;
685 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_samples") == 0) {
686 op
= nir_intrinsic_image_samples
;
687 } else if (strcmp(ir
->callee_name(), "__intrinsic_store_ssbo") == 0) {
688 op
= nir_intrinsic_store_ssbo
;
689 } else if (strcmp(ir
->callee_name(), "__intrinsic_load_ssbo") == 0) {
690 op
= nir_intrinsic_load_ssbo
;
691 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_add_internal") == 0) {
692 op
= nir_intrinsic_ssbo_atomic_add
;
693 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_and_internal") == 0) {
694 op
= nir_intrinsic_ssbo_atomic_and
;
695 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_or_internal") == 0) {
696 op
= nir_intrinsic_ssbo_atomic_or
;
697 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_xor_internal") == 0) {
698 op
= nir_intrinsic_ssbo_atomic_xor
;
699 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_min_internal") == 0) {
700 assert(ir
->return_deref
);
701 if (ir
->return_deref
->type
== glsl_type::int_type
)
702 op
= nir_intrinsic_ssbo_atomic_imin
;
703 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
704 op
= nir_intrinsic_ssbo_atomic_umin
;
706 unreachable("Invalid type");
707 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_max_internal") == 0) {
708 assert(ir
->return_deref
);
709 if (ir
->return_deref
->type
== glsl_type::int_type
)
710 op
= nir_intrinsic_ssbo_atomic_imax
;
711 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
712 op
= nir_intrinsic_ssbo_atomic_umax
;
714 unreachable("Invalid type");
715 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_exchange_internal") == 0) {
716 op
= nir_intrinsic_ssbo_atomic_exchange
;
717 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_comp_swap_internal") == 0) {
718 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
720 unreachable("not reached");
723 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
724 nir_dest
*dest
= &instr
->dest
;
727 case nir_intrinsic_atomic_counter_read_var
:
728 case nir_intrinsic_atomic_counter_inc_var
:
729 case nir_intrinsic_atomic_counter_dec_var
: {
730 ir_dereference
*param
=
731 (ir_dereference
*) ir
->actual_parameters
.get_head();
732 instr
->variables
[0] = evaluate_deref(&instr
->instr
, param
);
733 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, NULL
);
734 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
737 case nir_intrinsic_image_load
:
738 case nir_intrinsic_image_store
:
739 case nir_intrinsic_image_atomic_add
:
740 case nir_intrinsic_image_atomic_min
:
741 case nir_intrinsic_image_atomic_max
:
742 case nir_intrinsic_image_atomic_and
:
743 case nir_intrinsic_image_atomic_or
:
744 case nir_intrinsic_image_atomic_xor
:
745 case nir_intrinsic_image_atomic_exchange
:
746 case nir_intrinsic_image_atomic_comp_swap
:
747 case nir_intrinsic_image_samples
:
748 case nir_intrinsic_image_size
: {
749 nir_ssa_undef_instr
*instr_undef
=
750 nir_ssa_undef_instr_create(shader
, 1);
751 nir_instr_insert_after_cf_list(this->cf_node_list
,
752 &instr_undef
->instr
);
754 /* Set the image variable dereference. */
755 exec_node
*param
= ir
->actual_parameters
.get_head();
756 ir_dereference
*image
= (ir_dereference
*)param
;
757 const glsl_type
*type
=
758 image
->variable_referenced()->type
->without_array();
760 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
761 param
= param
->get_next();
763 /* Set the intrinsic destination. */
764 if (ir
->return_deref
) {
765 const nir_intrinsic_info
*info
=
766 &nir_intrinsic_infos
[instr
->intrinsic
];
767 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
768 info
->dest_components
, NULL
);
771 if (op
== nir_intrinsic_image_size
||
772 op
== nir_intrinsic_image_samples
) {
773 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
777 /* Set the address argument, extending the coordinate vector to four
780 const nir_src src_addr
= evaluate_rvalue((ir_dereference
*)param
);
781 nir_alu_instr
*instr_addr
= nir_alu_instr_create(shader
, nir_op_vec4
);
782 nir_ssa_dest_init(&instr_addr
->instr
, &instr_addr
->dest
.dest
, 4, NULL
);
784 for (int i
= 0; i
< 4; i
++) {
785 if (i
< type
->coordinate_components()) {
786 instr_addr
->src
[i
].src
= src_addr
;
787 instr_addr
->src
[i
].swizzle
[0] = i
;
789 instr_addr
->src
[i
].src
= nir_src_for_ssa(&instr_undef
->def
);
793 nir_instr_insert_after_cf_list(cf_node_list
, &instr_addr
->instr
);
794 instr
->src
[0] = nir_src_for_ssa(&instr_addr
->dest
.dest
.ssa
);
795 param
= param
->get_next();
797 /* Set the sample argument, which is undefined for single-sample
800 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
801 instr
->src
[1] = evaluate_rvalue((ir_dereference
*)param
);
802 param
= param
->get_next();
804 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
807 /* Set the intrinsic parameters. */
808 if (!param
->is_tail_sentinel()) {
809 instr
->src
[2] = evaluate_rvalue((ir_dereference
*)param
);
810 param
= param
->get_next();
813 if (!param
->is_tail_sentinel()) {
814 instr
->src
[3] = evaluate_rvalue((ir_dereference
*)param
);
815 param
= param
->get_next();
817 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
820 case nir_intrinsic_memory_barrier
:
821 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
823 case nir_intrinsic_store_ssbo
: {
824 exec_node
*param
= ir
->actual_parameters
.get_head();
825 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
827 param
= param
->get_next();
828 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
830 param
= param
->get_next();
831 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
833 param
= param
->get_next();
834 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
837 /* Check if we need the indirect version */
838 ir_constant
*const_offset
= offset
->as_constant();
840 op
= nir_intrinsic_store_ssbo_indirect
;
842 instr
= nir_intrinsic_instr_create(shader
, op
);
843 instr
->src
[2] = evaluate_rvalue(offset
);
844 instr
->const_index
[0] = 0;
846 instr
->const_index
[0] = const_offset
->value
.u
[0];
849 instr
->const_index
[1] = write_mask
->value
.u
[0];
851 instr
->src
[0] = evaluate_rvalue(val
);
852 instr
->num_components
= val
->type
->vector_elements
;
854 instr
->src
[1] = evaluate_rvalue(block
);
855 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
858 case nir_intrinsic_load_ssbo
: {
859 exec_node
*param
= ir
->actual_parameters
.get_head();
860 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
862 param
= param
->get_next();
863 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
865 /* Check if we need the indirect version */
866 ir_constant
*const_offset
= offset
->as_constant();
868 op
= nir_intrinsic_load_ssbo_indirect
;
870 instr
= nir_intrinsic_instr_create(shader
, op
);
871 instr
->src
[1] = evaluate_rvalue(offset
);
872 instr
->const_index
[0] = 0;
875 instr
->const_index
[0] = const_offset
->value
.u
[0];
878 instr
->src
[0] = evaluate_rvalue(block
);
880 const glsl_type
*type
= ir
->return_deref
->var
->type
;
881 instr
->num_components
= type
->vector_elements
;
883 /* Setup destination register */
884 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
885 type
->vector_elements
, NULL
);
887 /* Insert the created nir instruction now since in the case of boolean
888 * result we will need to emit another instruction after it
890 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
893 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
894 * consider a true boolean to be ~0. Fix this up with a != 0
897 if (type
->base_type
== GLSL_TYPE_BOOL
) {
898 nir_load_const_instr
*const_zero
=
899 nir_load_const_instr_create(shader
, 1);
900 const_zero
->value
.u
[0] = 0;
901 nir_instr_insert_after_cf_list(this->cf_node_list
,
904 nir_alu_instr
*load_ssbo_compare
=
905 nir_alu_instr_create(shader
, nir_op_ine
);
906 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
907 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
908 load_ssbo_compare
->src
[1].src
.is_ssa
= true;
909 load_ssbo_compare
->src
[1].src
.ssa
= &const_zero
->def
;
910 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
911 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
912 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
913 &load_ssbo_compare
->dest
.dest
,
914 type
->vector_elements
, NULL
);
915 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
916 nir_instr_insert_after_cf_list(this->cf_node_list
,
917 &load_ssbo_compare
->instr
);
918 dest
= &load_ssbo_compare
->dest
.dest
;
922 case nir_intrinsic_ssbo_atomic_add
:
923 case nir_intrinsic_ssbo_atomic_imin
:
924 case nir_intrinsic_ssbo_atomic_umin
:
925 case nir_intrinsic_ssbo_atomic_imax
:
926 case nir_intrinsic_ssbo_atomic_umax
:
927 case nir_intrinsic_ssbo_atomic_and
:
928 case nir_intrinsic_ssbo_atomic_or
:
929 case nir_intrinsic_ssbo_atomic_xor
:
930 case nir_intrinsic_ssbo_atomic_exchange
:
931 case nir_intrinsic_ssbo_atomic_comp_swap
: {
932 int param_count
= ir
->actual_parameters
.length();
933 assert(param_count
== 3 || param_count
== 4);
936 exec_node
*param
= ir
->actual_parameters
.get_head();
937 ir_instruction
*inst
= (ir_instruction
*) param
;
938 instr
->src
[0] = evaluate_rvalue(inst
->as_rvalue());
941 param
= param
->get_next();
942 inst
= (ir_instruction
*) param
;
943 instr
->src
[1] = evaluate_rvalue(inst
->as_rvalue());
945 /* data1 parameter (this is always present) */
946 param
= param
->get_next();
947 inst
= (ir_instruction
*) param
;
948 instr
->src
[2] = evaluate_rvalue(inst
->as_rvalue());
950 /* data2 parameter (only with atomic_comp_swap) */
951 if (param_count
== 4) {
952 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
953 param
= param
->get_next();
954 inst
= (ir_instruction
*) param
;
955 instr
->src
[3] = evaluate_rvalue(inst
->as_rvalue());
959 assert(ir
->return_deref
);
960 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
961 ir
->return_deref
->type
->vector_elements
, NULL
);
962 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
966 unreachable("not reached");
969 if (ir
->return_deref
) {
970 nir_intrinsic_instr
*store_instr
=
971 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
972 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
974 store_instr
->variables
[0] =
975 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
976 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
978 nir_instr_insert_after_cf_list(this->cf_node_list
,
979 &store_instr
->instr
);
985 struct hash_entry
*entry
=
986 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
988 nir_function_overload
*callee
= (nir_function_overload
*) entry
->data
;
990 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
993 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
994 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
998 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
999 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
1003 nir_visitor::visit(ir_assignment
*ir
)
1005 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1007 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1008 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1009 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1010 nir_intrinsic_instr
*copy
=
1011 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1013 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1014 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1016 if (ir
->condition
) {
1017 nir_if
*if_stmt
= nir_if_create(this->shader
);
1018 if_stmt
->condition
= evaluate_rvalue(ir
->condition
);
1019 nir_cf_node_insert_end(this->cf_node_list
, &if_stmt
->cf_node
);
1020 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, ©
->instr
);
1022 nir_instr_insert_after_cf_list(this->cf_node_list
, ©
->instr
);
1027 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1029 ir
->lhs
->accept(this);
1030 nir_deref_var
*lhs_deref
= this->deref_head
;
1031 nir_src src
= evaluate_rvalue(ir
->rhs
);
1033 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1035 * We have no good way to update only part of a variable, so just load
1036 * the LHS and do a vec operation to combine the old with the new, and
1038 * back into the LHS. Copy propagation should get rid of the mess.
1041 nir_intrinsic_instr
*load
=
1042 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1043 load
->num_components
= ir
->lhs
->type
->vector_elements
;
1044 nir_ssa_dest_init(&load
->instr
, &load
->dest
, num_components
, NULL
);
1045 load
->variables
[0] = lhs_deref
;
1046 ralloc_steal(load
, load
->variables
[0]);
1047 nir_instr_insert_after_cf_list(this->cf_node_list
, &load
->instr
);
1050 switch (ir
->lhs
->type
->vector_elements
) {
1051 case 1: vec_op
= nir_op_imov
; break;
1052 case 2: vec_op
= nir_op_vec2
; break;
1053 case 3: vec_op
= nir_op_vec3
; break;
1054 case 4: vec_op
= nir_op_vec4
; break;
1055 default: unreachable("Invalid number of components"); break;
1057 nir_alu_instr
*vec
= nir_alu_instr_create(this->shader
, vec_op
);
1058 nir_ssa_dest_init(&vec
->instr
, &vec
->dest
.dest
, num_components
, NULL
);
1059 vec
->dest
.write_mask
= (1 << num_components
) - 1;
1061 unsigned component
= 0;
1062 for (unsigned i
= 0; i
< ir
->lhs
->type
->vector_elements
; i
++) {
1063 if (ir
->write_mask
& (1 << i
)) {
1064 vec
->src
[i
].src
= src
;
1066 /* GLSL IR will give us the input to the write-masked assignment
1067 * in a single packed vector. So, for example, if the
1068 * writemask is xzw, then we have to swizzle x -> x, y -> z,
1069 * and z -> w and get the y component from the load.
1071 vec
->src
[i
].swizzle
[0] = component
++;
1073 vec
->src
[i
].src
.is_ssa
= true;
1074 vec
->src
[i
].src
.ssa
= &load
->dest
.ssa
;
1075 vec
->src
[i
].swizzle
[0] = i
;
1079 nir_instr_insert_after_cf_list(this->cf_node_list
, &vec
->instr
);
1082 src
.ssa
= &vec
->dest
.dest
.ssa
;
1085 nir_intrinsic_instr
*store
=
1086 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1087 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1088 nir_deref
*store_deref
= nir_copy_deref(store
, &lhs_deref
->deref
);
1089 store
->variables
[0] = nir_deref_as_var(store_deref
);
1090 store
->src
[0] = src
;
1092 if (ir
->condition
) {
1093 nir_if
*if_stmt
= nir_if_create(this->shader
);
1094 if_stmt
->condition
= evaluate_rvalue(ir
->condition
);
1095 nir_cf_node_insert_end(this->cf_node_list
, &if_stmt
->cf_node
);
1096 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, &store
->instr
);
1098 nir_instr_insert_after_cf_list(this->cf_node_list
, &store
->instr
);
1103 * Given an instruction, returns a pointer to its destination or NULL if there
1104 * is no destination.
1106 * Note that this only handles instructions we generate at this level.
1109 get_instr_dest(nir_instr
*instr
)
1111 nir_alu_instr
*alu_instr
;
1112 nir_intrinsic_instr
*intrinsic_instr
;
1113 nir_tex_instr
*tex_instr
;
1115 switch (instr
->type
) {
1116 case nir_instr_type_alu
:
1117 alu_instr
= nir_instr_as_alu(instr
);
1118 return &alu_instr
->dest
.dest
;
1120 case nir_instr_type_intrinsic
:
1121 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1122 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1123 return &intrinsic_instr
->dest
;
1127 case nir_instr_type_tex
:
1128 tex_instr
= nir_instr_as_tex(instr
);
1129 return &tex_instr
->dest
;
1132 unreachable("not reached");
1139 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
)
1141 nir_dest
*dest
= get_instr_dest(instr
);
1144 nir_ssa_dest_init(instr
, dest
, num_components
, NULL
);
1146 nir_instr_insert_after_cf_list(this->cf_node_list
, instr
);
1147 this->result
= instr
;
1151 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1154 if (ir
->as_dereference() || ir
->as_constant()) {
1156 * A dereference is being used on the right hand side, which means we
1157 * must emit a variable load.
1160 nir_intrinsic_instr
*load_instr
=
1161 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1162 load_instr
->num_components
= ir
->type
->vector_elements
;
1163 load_instr
->variables
[0] = this->deref_head
;
1164 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1165 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
);
1168 nir_dest
*dest
= get_instr_dest(this->result
);
1169 assert(dest
->is_ssa
);
1171 return nir_src_for_ssa(&dest
->ssa
);
1175 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src
*srcs
)
1177 nir_alu_instr
*instr
= nir_alu_instr_create(this->shader
, op
);
1178 for (unsigned i
= 0; i
< nir_op_infos
[op
].num_inputs
; i
++)
1179 instr
->src
[i
].src
= srcs
[i
];
1180 instr
->dest
.write_mask
= (1 << dest_size
) - 1;
1181 add_instr(&instr
->instr
, dest_size
);
1186 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src src1
)
1188 assert(nir_op_infos
[op
].num_inputs
== 1);
1189 return emit(op
, dest_size
, &src1
);
1193 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src src1
,
1196 assert(nir_op_infos
[op
].num_inputs
== 2);
1197 nir_src srcs
[] = { src1
, src2
};
1198 return emit(op
, dest_size
, srcs
);
1202 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src src1
,
1203 nir_src src2
, nir_src src3
)
1205 assert(nir_op_infos
[op
].num_inputs
== 3);
1206 nir_src srcs
[] = { src1
, src2
, src3
};
1207 return emit(op
, dest_size
, srcs
);
1211 nir_visitor::visit(ir_expression
*ir
)
1213 /* Some special cases */
1214 switch (ir
->operation
) {
1215 case ir_binop_ubo_load
: {
1216 ir_constant
*const_index
= ir
->operands
[1]->as_constant();
1218 nir_intrinsic_op op
;
1220 op
= nir_intrinsic_load_ubo
;
1222 op
= nir_intrinsic_load_ubo_indirect
;
1224 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(this->shader
, op
);
1225 load
->num_components
= ir
->type
->vector_elements
;
1226 load
->const_index
[0] = const_index
? const_index
->value
.u
[0] : 0; /* base offset */
1227 load
->src
[0] = evaluate_rvalue(ir
->operands
[0]);
1229 load
->src
[1] = evaluate_rvalue(ir
->operands
[1]);
1230 add_instr(&load
->instr
, ir
->type
->vector_elements
);
1233 * In UBO's, a true boolean value is any non-zero value, but we consider
1234 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1237 if (ir
->type
->base_type
== GLSL_TYPE_BOOL
) {
1238 nir_load_const_instr
*const_zero
= nir_load_const_instr_create(shader
, 1);
1239 const_zero
->value
.u
[0] = 0;
1240 nir_instr_insert_after_cf_list(this->cf_node_list
, &const_zero
->instr
);
1242 nir_alu_instr
*compare
= nir_alu_instr_create(shader
, nir_op_ine
);
1243 compare
->src
[0].src
.is_ssa
= true;
1244 compare
->src
[0].src
.ssa
= &load
->dest
.ssa
;
1245 compare
->src
[1].src
.is_ssa
= true;
1246 compare
->src
[1].src
.ssa
= &const_zero
->def
;
1247 for (unsigned i
= 0; i
< ir
->type
->vector_elements
; i
++)
1248 compare
->src
[1].swizzle
[i
] = 0;
1249 compare
->dest
.write_mask
= (1 << ir
->type
->vector_elements
) - 1;
1251 add_instr(&compare
->instr
, ir
->type
->vector_elements
);
1257 case ir_unop_interpolate_at_centroid
:
1258 case ir_binop_interpolate_at_offset
:
1259 case ir_binop_interpolate_at_sample
: {
1260 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1261 ir_swizzle
*swizzle
= NULL
;
1263 /* the api does not allow a swizzle here, but the varying packing code
1264 * may have pushed one into here.
1266 swizzle
= ir
->operands
[0]->as_swizzle();
1268 deref
= swizzle
->val
->as_dereference();
1272 deref
->accept(this);
1274 nir_intrinsic_op op
;
1275 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1276 switch (ir
->operation
) {
1277 case ir_unop_interpolate_at_centroid
:
1278 op
= nir_intrinsic_interp_var_at_centroid
;
1280 case ir_binop_interpolate_at_offset
:
1281 op
= nir_intrinsic_interp_var_at_offset
;
1283 case ir_binop_interpolate_at_sample
:
1284 op
= nir_intrinsic_interp_var_at_sample
;
1287 unreachable("Invalid interpolation intrinsic");
1290 /* This case can happen if the vertex shader does not write the
1291 * given varying. In this case, the linker will lower it to a
1292 * global variable. Since interpolating a variable makes no
1293 * sense, we'll just turn it into a load which will probably
1294 * eventually end up as an SSA definition.
1296 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1297 op
= nir_intrinsic_load_var
;
1300 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1301 intrin
->num_components
= deref
->type
->vector_elements
;
1302 intrin
->variables
[0] = this->deref_head
;
1303 ralloc_steal(intrin
, intrin
->variables
[0]);
1305 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1306 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1307 intrin
->src
[0] = evaluate_rvalue(ir
->operands
[1]);
1309 add_instr(&intrin
->instr
, deref
->type
->vector_elements
);
1312 nir_alu_instr
*mov
= nir_alu_instr_create(shader
, nir_op_imov
);
1313 mov
->dest
.write_mask
= (1 << swizzle
->type
->vector_elements
) - 1;
1314 mov
->src
[0].src
.is_ssa
= true;
1315 mov
->src
[0].src
.ssa
= &intrin
->dest
.ssa
;
1317 mov
->src
[0].swizzle
[0] = swizzle
->mask
.x
;
1318 mov
->src
[0].swizzle
[1] = swizzle
->mask
.y
;
1319 mov
->src
[0].swizzle
[2] = swizzle
->mask
.z
;
1320 mov
->src
[0].swizzle
[3] = swizzle
->mask
.w
;
1321 for (unsigned i
= deref
->type
->vector_elements
; i
< 4; i
++)
1322 mov
->src
[0].swizzle
[i
] = 0;
1324 add_instr(&mov
->instr
, swizzle
->type
->vector_elements
);
1335 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1336 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1338 glsl_base_type types
[4];
1339 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1341 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1343 types
[i
] = GLSL_TYPE_FLOAT
;
1345 glsl_base_type out_type
;
1347 out_type
= ir
->type
->base_type
;
1349 out_type
= GLSL_TYPE_FLOAT
;
1351 unsigned dest_size
= ir
->type
->vector_elements
;
1353 nir_alu_instr
*instr
;
1356 switch (ir
->operation
) {
1357 case ir_unop_bit_not
: emit(nir_op_inot
, dest_size
, srcs
); break;
1358 case ir_unop_logic_not
:
1359 emit(supports_ints
? nir_op_inot
: nir_op_fnot
, dest_size
, srcs
);
1362 instr
= emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fneg
: nir_op_ineg
,
1366 instr
= emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fabs
: nir_op_iabs
,
1369 case ir_unop_saturate
:
1370 assert(types
[0] == GLSL_TYPE_FLOAT
);
1371 instr
= emit(nir_op_fsat
, dest_size
, srcs
);
1374 emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fsign
: nir_op_isign
,
1377 case ir_unop_rcp
: emit(nir_op_frcp
, dest_size
, srcs
); break;
1378 case ir_unop_rsq
: emit(nir_op_frsq
, dest_size
, srcs
); break;
1379 case ir_unop_sqrt
: emit(nir_op_fsqrt
, dest_size
, srcs
); break;
1380 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1381 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1382 case ir_unop_exp2
: emit(nir_op_fexp2
, dest_size
, srcs
); break;
1383 case ir_unop_log2
: emit(nir_op_flog2
, dest_size
, srcs
); break;
1385 emit(supports_ints
? nir_op_i2f
: nir_op_fmov
, dest_size
, srcs
);
1388 emit(supports_ints
? nir_op_u2f
: nir_op_fmov
, dest_size
, srcs
);
1391 emit(supports_ints
? nir_op_b2f
: nir_op_fmov
, dest_size
, srcs
);
1393 case ir_unop_f2i
: emit(nir_op_f2i
, dest_size
, srcs
); break;
1394 case ir_unop_f2u
: emit(nir_op_f2u
, dest_size
, srcs
); break;
1395 case ir_unop_f2b
: emit(nir_op_f2b
, dest_size
, srcs
); break;
1396 case ir_unop_i2b
: emit(nir_op_i2b
, dest_size
, srcs
); break;
1397 case ir_unop_b2i
: emit(nir_op_b2i
, dest_size
, srcs
); break;
1400 case ir_unop_bitcast_i2f
:
1401 case ir_unop_bitcast_f2i
:
1402 case ir_unop_bitcast_u2f
:
1403 case ir_unop_bitcast_f2u
:
1404 case ir_unop_subroutine_to_int
:
1406 emit(nir_op_imov
, dest_size
, srcs
);
1409 switch (ir
->operands
[0]->type
->vector_elements
) {
1411 emit(supports_ints
? nir_op_bany2
: nir_op_fany2
,
1415 emit(supports_ints
? nir_op_bany3
: nir_op_fany3
,
1419 emit(supports_ints
? nir_op_bany4
: nir_op_fany4
,
1423 unreachable("not reached");
1426 case ir_unop_trunc
: emit(nir_op_ftrunc
, dest_size
, srcs
); break;
1427 case ir_unop_ceil
: emit(nir_op_fceil
, dest_size
, srcs
); break;
1428 case ir_unop_floor
: emit(nir_op_ffloor
, dest_size
, srcs
); break;
1429 case ir_unop_fract
: emit(nir_op_ffract
, dest_size
, srcs
); break;
1430 case ir_unop_round_even
: emit(nir_op_fround_even
, dest_size
, srcs
); break;
1431 case ir_unop_sin
: emit(nir_op_fsin
, dest_size
, srcs
); break;
1432 case ir_unop_cos
: emit(nir_op_fcos
, dest_size
, srcs
); break;
1433 case ir_unop_dFdx
: emit(nir_op_fddx
, dest_size
, srcs
); break;
1434 case ir_unop_dFdy
: emit(nir_op_fddy
, dest_size
, srcs
); break;
1435 case ir_unop_dFdx_fine
: emit(nir_op_fddx_fine
, dest_size
, srcs
); break;
1436 case ir_unop_dFdy_fine
: emit(nir_op_fddy_fine
, dest_size
, srcs
); break;
1437 case ir_unop_dFdx_coarse
: emit(nir_op_fddx_coarse
, dest_size
, srcs
); break;
1438 case ir_unop_dFdy_coarse
: emit(nir_op_fddy_coarse
, dest_size
, srcs
); break;
1439 case ir_unop_pack_snorm_2x16
:
1440 emit(nir_op_pack_snorm_2x16
, dest_size
, srcs
);
1442 case ir_unop_pack_snorm_4x8
:
1443 emit(nir_op_pack_snorm_4x8
, dest_size
, srcs
);
1445 case ir_unop_pack_unorm_2x16
:
1446 emit(nir_op_pack_unorm_2x16
, dest_size
, srcs
);
1448 case ir_unop_pack_unorm_4x8
:
1449 emit(nir_op_pack_unorm_4x8
, dest_size
, srcs
);
1451 case ir_unop_pack_half_2x16
:
1452 emit(nir_op_pack_half_2x16
, dest_size
, srcs
);
1454 case ir_unop_unpack_snorm_2x16
:
1455 emit(nir_op_unpack_snorm_2x16
, dest_size
, srcs
);
1457 case ir_unop_unpack_snorm_4x8
:
1458 emit(nir_op_unpack_snorm_4x8
, dest_size
, srcs
);
1460 case ir_unop_unpack_unorm_2x16
:
1461 emit(nir_op_unpack_unorm_2x16
, dest_size
, srcs
);
1463 case ir_unop_unpack_unorm_4x8
:
1464 emit(nir_op_unpack_unorm_4x8
, dest_size
, srcs
);
1466 case ir_unop_unpack_half_2x16
:
1467 emit(nir_op_unpack_half_2x16
, dest_size
, srcs
);
1469 case ir_unop_unpack_half_2x16_split_x
:
1470 emit(nir_op_unpack_half_2x16_split_x
, dest_size
, srcs
);
1472 case ir_unop_unpack_half_2x16_split_y
:
1473 emit(nir_op_unpack_half_2x16_split_y
, dest_size
, srcs
);
1475 case ir_unop_bitfield_reverse
:
1476 emit(nir_op_bitfield_reverse
, dest_size
, srcs
);
1478 case ir_unop_bit_count
:
1479 emit(nir_op_bit_count
, dest_size
, srcs
);
1481 case ir_unop_find_msb
:
1483 case GLSL_TYPE_UINT
:
1484 emit(nir_op_ufind_msb
, dest_size
, srcs
);
1487 emit(nir_op_ifind_msb
, dest_size
, srcs
);
1490 unreachable("Invalid type for findMSB()");
1493 case ir_unop_find_lsb
:
1494 emit(nir_op_find_lsb
, dest_size
, srcs
);
1498 switch (ir
->type
->vector_elements
) {
1500 switch (ir
->operands
[0]->type
->vector_elements
) {
1501 case 1: emit(nir_op_fnoise1_1
, dest_size
, srcs
); break;
1502 case 2: emit(nir_op_fnoise1_2
, dest_size
, srcs
); break;
1503 case 3: emit(nir_op_fnoise1_3
, dest_size
, srcs
); break;
1504 case 4: emit(nir_op_fnoise1_4
, dest_size
, srcs
); break;
1505 default: unreachable("not reached");
1509 switch (ir
->operands
[0]->type
->vector_elements
) {
1510 case 1: emit(nir_op_fnoise2_1
, dest_size
, srcs
); break;
1511 case 2: emit(nir_op_fnoise2_2
, dest_size
, srcs
); break;
1512 case 3: emit(nir_op_fnoise2_3
, dest_size
, srcs
); break;
1513 case 4: emit(nir_op_fnoise2_4
, dest_size
, srcs
); break;
1514 default: unreachable("not reached");
1518 switch (ir
->operands
[0]->type
->vector_elements
) {
1519 case 1: emit(nir_op_fnoise3_1
, dest_size
, srcs
); break;
1520 case 2: emit(nir_op_fnoise3_2
, dest_size
, srcs
); break;
1521 case 3: emit(nir_op_fnoise3_3
, dest_size
, srcs
); break;
1522 case 4: emit(nir_op_fnoise3_4
, dest_size
, srcs
); break;
1523 default: unreachable("not reached");
1527 switch (ir
->operands
[0]->type
->vector_elements
) {
1528 case 1: emit(nir_op_fnoise4_1
, dest_size
, srcs
); break;
1529 case 2: emit(nir_op_fnoise4_2
, dest_size
, srcs
); break;
1530 case 3: emit(nir_op_fnoise4_3
, dest_size
, srcs
); break;
1531 case 4: emit(nir_op_fnoise4_4
, dest_size
, srcs
); break;
1532 default: unreachable("not reached");
1536 unreachable("not reached");
1539 case ir_unop_get_buffer_size
: {
1540 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1542 nir_intrinsic_get_buffer_size
);
1543 load
->num_components
= ir
->type
->vector_elements
;
1544 load
->src
[0] = evaluate_rvalue(ir
->operands
[0]);
1545 add_instr(&load
->instr
, ir
->type
->vector_elements
);
1557 case ir_binop_bit_and
:
1558 case ir_binop_bit_or
:
1559 case ir_binop_bit_xor
:
1560 case ir_binop_logic_and
:
1561 case ir_binop_logic_or
:
1562 case ir_binop_logic_xor
:
1563 case ir_binop_lshift
:
1564 case ir_binop_rshift
:
1565 switch (ir
->operation
) {
1567 if (out_type
== GLSL_TYPE_FLOAT
)
1573 if (out_type
== GLSL_TYPE_FLOAT
)
1579 if (out_type
== GLSL_TYPE_FLOAT
)
1585 if (out_type
== GLSL_TYPE_FLOAT
)
1587 else if (out_type
== GLSL_TYPE_INT
)
1593 if (out_type
== GLSL_TYPE_FLOAT
)
1599 if (out_type
== GLSL_TYPE_FLOAT
)
1601 else if (out_type
== GLSL_TYPE_INT
)
1607 if (out_type
== GLSL_TYPE_FLOAT
)
1609 else if (out_type
== GLSL_TYPE_INT
)
1614 case ir_binop_bit_and
:
1617 case ir_binop_bit_or
:
1620 case ir_binop_bit_xor
:
1623 case ir_binop_logic_and
:
1629 case ir_binop_logic_or
:
1635 case ir_binop_logic_xor
:
1641 case ir_binop_lshift
:
1644 case ir_binop_rshift
:
1645 if (out_type
== GLSL_TYPE_INT
)
1655 unreachable("not reached");
1658 instr
= emit(op
, dest_size
, srcs
);
1660 if (ir
->operands
[0]->type
->vector_elements
!= 1 &&
1661 ir
->operands
[1]->type
->vector_elements
== 1) {
1662 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
;
1664 instr
->src
[1].swizzle
[i
] = 0;
1668 if (ir
->operands
[1]->type
->vector_elements
!= 1 &&
1669 ir
->operands
[0]->type
->vector_elements
== 1) {
1670 for (unsigned i
= 0; i
< ir
->operands
[1]->type
->vector_elements
;
1672 instr
->src
[0].swizzle
[i
] = 0;
1677 case ir_binop_imul_high
:
1678 emit(out_type
== GLSL_TYPE_UINT
? nir_op_umul_high
: nir_op_imul_high
,
1681 case ir_binop_carry
: emit(nir_op_uadd_carry
, dest_size
, srcs
); break;
1682 case ir_binop_borrow
: emit(nir_op_usub_borrow
, dest_size
, srcs
); break;
1684 if (supports_ints
) {
1685 if (types
[0] == GLSL_TYPE_FLOAT
)
1686 emit(nir_op_flt
, dest_size
, srcs
);
1687 else if (types
[0] == GLSL_TYPE_INT
)
1688 emit(nir_op_ilt
, dest_size
, srcs
);
1690 emit(nir_op_ult
, dest_size
, srcs
);
1692 emit(nir_op_slt
, dest_size
, srcs
);
1695 case ir_binop_greater
:
1696 if (supports_ints
) {
1697 if (types
[0] == GLSL_TYPE_FLOAT
)
1698 emit(nir_op_flt
, dest_size
, srcs
[1], srcs
[0]);
1699 else if (types
[0] == GLSL_TYPE_INT
)
1700 emit(nir_op_ilt
, dest_size
, srcs
[1], srcs
[0]);
1702 emit(nir_op_ult
, dest_size
, srcs
[1], srcs
[0]);
1704 emit(nir_op_slt
, dest_size
, srcs
[1], srcs
[0]);
1707 case ir_binop_lequal
:
1708 if (supports_ints
) {
1709 if (types
[0] == GLSL_TYPE_FLOAT
)
1710 emit(nir_op_fge
, dest_size
, srcs
[1], srcs
[0]);
1711 else if (types
[0] == GLSL_TYPE_INT
)
1712 emit(nir_op_ige
, dest_size
, srcs
[1], srcs
[0]);
1714 emit(nir_op_uge
, dest_size
, srcs
[1], srcs
[0]);
1716 emit(nir_op_slt
, dest_size
, srcs
[1], srcs
[0]);
1719 case ir_binop_gequal
:
1720 if (supports_ints
) {
1721 if (types
[0] == GLSL_TYPE_FLOAT
)
1722 emit(nir_op_fge
, dest_size
, srcs
);
1723 else if (types
[0] == GLSL_TYPE_INT
)
1724 emit(nir_op_ige
, dest_size
, srcs
);
1726 emit(nir_op_uge
, dest_size
, srcs
);
1728 emit(nir_op_slt
, dest_size
, srcs
);
1731 case ir_binop_equal
:
1732 if (supports_ints
) {
1733 if (types
[0] == GLSL_TYPE_FLOAT
)
1734 emit(nir_op_feq
, dest_size
, srcs
);
1736 emit(nir_op_ieq
, dest_size
, srcs
);
1738 emit(nir_op_seq
, dest_size
, srcs
);
1741 case ir_binop_nequal
:
1742 if (supports_ints
) {
1743 if (types
[0] == GLSL_TYPE_FLOAT
)
1744 emit(nir_op_fne
, dest_size
, srcs
);
1746 emit(nir_op_ine
, dest_size
, srcs
);
1748 emit(nir_op_sne
, dest_size
, srcs
);
1751 case ir_binop_all_equal
:
1752 if (supports_ints
) {
1753 if (types
[0] == GLSL_TYPE_FLOAT
) {
1754 switch (ir
->operands
[0]->type
->vector_elements
) {
1755 case 1: emit(nir_op_feq
, dest_size
, srcs
); break;
1756 case 2: emit(nir_op_ball_fequal2
, dest_size
, srcs
); break;
1757 case 3: emit(nir_op_ball_fequal3
, dest_size
, srcs
); break;
1758 case 4: emit(nir_op_ball_fequal4
, dest_size
, srcs
); break;
1760 unreachable("not reached");
1763 switch (ir
->operands
[0]->type
->vector_elements
) {
1764 case 1: emit(nir_op_ieq
, dest_size
, srcs
); break;
1765 case 2: emit(nir_op_ball_iequal2
, dest_size
, srcs
); break;
1766 case 3: emit(nir_op_ball_iequal3
, dest_size
, srcs
); break;
1767 case 4: emit(nir_op_ball_iequal4
, dest_size
, srcs
); break;
1769 unreachable("not reached");
1773 switch (ir
->operands
[0]->type
->vector_elements
) {
1774 case 1: emit(nir_op_seq
, dest_size
, srcs
); break;
1775 case 2: emit(nir_op_fall_equal2
, dest_size
, srcs
); break;
1776 case 3: emit(nir_op_fall_equal3
, dest_size
, srcs
); break;
1777 case 4: emit(nir_op_fall_equal4
, dest_size
, srcs
); break;
1779 unreachable("not reached");
1783 case ir_binop_any_nequal
:
1784 if (supports_ints
) {
1785 if (types
[0] == GLSL_TYPE_FLOAT
) {
1786 switch (ir
->operands
[0]->type
->vector_elements
) {
1787 case 1: emit(nir_op_fne
, dest_size
, srcs
); break;
1788 case 2: emit(nir_op_bany_fnequal2
, dest_size
, srcs
); break;
1789 case 3: emit(nir_op_bany_fnequal3
, dest_size
, srcs
); break;
1790 case 4: emit(nir_op_bany_fnequal4
, dest_size
, srcs
); break;
1792 unreachable("not reached");
1795 switch (ir
->operands
[0]->type
->vector_elements
) {
1796 case 1: emit(nir_op_ine
, dest_size
, srcs
); break;
1797 case 2: emit(nir_op_bany_inequal2
, dest_size
, srcs
); break;
1798 case 3: emit(nir_op_bany_inequal3
, dest_size
, srcs
); break;
1799 case 4: emit(nir_op_bany_inequal4
, dest_size
, srcs
); break;
1801 unreachable("not reached");
1805 switch (ir
->operands
[0]->type
->vector_elements
) {
1806 case 1: emit(nir_op_sne
, dest_size
, srcs
); break;
1807 case 2: emit(nir_op_fany_nequal2
, dest_size
, srcs
); break;
1808 case 3: emit(nir_op_fany_nequal3
, dest_size
, srcs
); break;
1809 case 4: emit(nir_op_fany_nequal4
, dest_size
, srcs
); break;
1811 unreachable("not reached");
1816 switch (ir
->operands
[0]->type
->vector_elements
) {
1817 case 2: emit(nir_op_fdot2
, dest_size
, srcs
); break;
1818 case 3: emit(nir_op_fdot3
, dest_size
, srcs
); break;
1819 case 4: emit(nir_op_fdot4
, dest_size
, srcs
); break;
1821 unreachable("not reached");
1825 case ir_binop_pack_half_2x16_split
:
1826 emit(nir_op_pack_half_2x16_split
, dest_size
, srcs
);
1828 case ir_binop_bfm
: emit(nir_op_bfm
, dest_size
, srcs
); break;
1829 case ir_binop_ldexp
: emit(nir_op_ldexp
, dest_size
, srcs
); break;
1830 case ir_triop_fma
: emit(nir_op_ffma
, dest_size
, srcs
); break;
1832 instr
= emit(nir_op_flrp
, dest_size
, srcs
);
1833 if (ir
->operands
[0]->type
->vector_elements
!= 1 &&
1834 ir
->operands
[2]->type
->vector_elements
== 1) {
1835 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
;
1837 instr
->src
[2].swizzle
[i
] = 0;
1843 emit(nir_op_bcsel
, dest_size
, srcs
);
1845 emit(nir_op_fcsel
, dest_size
, srcs
);
1848 instr
= emit(nir_op_bfi
, dest_size
, srcs
);
1849 for (unsigned i
= 0; i
< ir
->operands
[1]->type
->vector_elements
; i
++) {
1850 instr
->src
[0].swizzle
[i
] = 0;
1853 case ir_triop_bitfield_extract
:
1854 instr
= emit(out_type
== GLSL_TYPE_INT
? nir_op_ibitfield_extract
:
1855 nir_op_ubitfield_extract
, dest_size
, srcs
);
1856 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1857 instr
->src
[1].swizzle
[i
] = 0;
1858 instr
->src
[2].swizzle
[i
] = 0;
1861 case ir_quadop_bitfield_insert
:
1862 instr
= emit(nir_op_bitfield_insert
, dest_size
, srcs
);
1863 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1864 instr
->src
[2].swizzle
[i
] = 0;
1865 instr
->src
[3].swizzle
[i
] = 0;
1868 case ir_quadop_vector
:
1869 switch (ir
->type
->vector_elements
) {
1870 case 2: emit(nir_op_vec2
, dest_size
, srcs
); break;
1871 case 3: emit(nir_op_vec3
, dest_size
, srcs
); break;
1872 case 4: emit(nir_op_vec4
, dest_size
, srcs
); break;
1873 default: unreachable("not reached");
1878 unreachable("not reached");
1883 nir_visitor::visit(ir_swizzle
*ir
)
1885 nir_alu_instr
*instr
= emit(supports_ints
? nir_op_imov
: nir_op_fmov
,
1886 ir
->type
->vector_elements
,
1887 evaluate_rvalue(ir
->val
));
1889 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1890 for (unsigned i
= 0; i
< ir
->type
->vector_elements
; i
++)
1891 instr
->src
[0].swizzle
[i
] = swizzle
[i
];
1895 nir_visitor::visit(ir_texture
*ir
)
1902 num_srcs
= 1; /* coordinate */
1907 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1908 num_srcs
= 2; /* coordinate, bias/lod */
1912 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1918 if (ir
->lod_info
.lod
!= NULL
)
1919 num_srcs
= 2; /* coordinate, lod */
1921 num_srcs
= 1; /* coordinate */
1925 op
= nir_texop_txf_ms
;
1926 num_srcs
= 2; /* coordinate, sample_index */
1931 if (ir
->lod_info
.lod
!= NULL
)
1932 num_srcs
= 1; /* lod */
1939 num_srcs
= 1; /* coordinate */
1944 num_srcs
= 1; /* coordinate */
1947 case ir_query_levels
:
1948 op
= nir_texop_query_levels
;
1952 case ir_texture_samples
:
1953 op
= nir_texop_texture_samples
;
1958 unreachable("not reached");
1961 if (ir
->projector
!= NULL
)
1963 if (ir
->shadow_comparitor
!= NULL
)
1965 if (ir
->offset
!= NULL
&& ir
->offset
->as_constant() == NULL
)
1968 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
1971 instr
->sampler_dim
=
1972 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
1973 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
1974 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
1975 if (instr
->is_shadow
)
1976 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
1977 switch (ir
->type
->base_type
) {
1978 case GLSL_TYPE_FLOAT
:
1979 instr
->dest_type
= nir_type_float
;
1982 instr
->dest_type
= nir_type_int
;
1984 case GLSL_TYPE_UINT
:
1985 instr
->dest_type
= nir_type_unsigned
;
1988 unreachable("not reached");
1991 instr
->sampler
= evaluate_deref(&instr
->instr
, ir
->sampler
);
1993 unsigned src_number
= 0;
1995 if (ir
->coordinate
!= NULL
) {
1996 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
1997 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->coordinate
);
1998 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2002 if (ir
->projector
!= NULL
) {
2003 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->projector
);
2004 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2008 if (ir
->shadow_comparitor
!= NULL
) {
2009 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->shadow_comparitor
);
2010 instr
->src
[src_number
].src_type
= nir_tex_src_comparitor
;
2014 if (ir
->offset
!= NULL
) {
2015 /* we don't support multiple offsets yet */
2016 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2018 ir_constant
*const_offset
= ir
->offset
->as_constant();
2019 if (const_offset
!= NULL
) {
2020 for (unsigned i
= 0; i
< const_offset
->type
->vector_elements
; i
++)
2021 instr
->const_offset
[i
] = const_offset
->value
.i
[i
];
2023 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->offset
);
2024 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2031 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.bias
);
2032 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2039 if (ir
->lod_info
.lod
!= NULL
) {
2040 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.lod
);
2041 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2047 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.grad
.dPdx
);
2048 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2050 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.grad
.dPdy
);
2051 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2056 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.sample_index
);
2057 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2062 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2069 assert(src_number
== num_srcs
);
2071 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
));
2075 nir_visitor::visit(ir_constant
*ir
)
2078 * We don't know if this variable is an an array or struct that gets
2079 * dereferenced, so do the safe thing an make it a variable with a
2080 * constant initializer and return a dereference.
2084 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2085 var
->data
.read_only
= true;
2086 var
->constant_initializer
= constant_copy(ir
, var
);
2088 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2089 this->deref_tail
= &this->deref_head
->deref
;
2093 nir_visitor::visit(ir_dereference_variable
*ir
)
2095 struct hash_entry
*entry
=
2096 _mesa_hash_table_search(this->var_table
, ir
->var
);
2098 nir_variable
*var
= (nir_variable
*) entry
->data
;
2100 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2101 this->deref_head
= deref
;
2102 this->deref_tail
= &deref
->deref
;
2106 nir_visitor::visit(ir_dereference_record
*ir
)
2108 ir
->record
->accept(this);
2110 int field_index
= this->deref_tail
->type
->field_index(ir
->field
);
2111 assert(field_index
>= 0);
2113 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2114 deref
->deref
.type
= ir
->type
;
2115 this->deref_tail
->child
= &deref
->deref
;
2116 this->deref_tail
= &deref
->deref
;
2120 nir_visitor::visit(ir_dereference_array
*ir
)
2122 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2123 deref
->deref
.type
= ir
->type
;
2125 ir_constant
*const_index
= ir
->array_index
->as_constant();
2126 if (const_index
!= NULL
) {
2127 deref
->deref_array_type
= nir_deref_array_type_direct
;
2128 deref
->base_offset
= const_index
->value
.u
[0];
2130 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2131 deref
->indirect
= evaluate_rvalue(ir
->array_index
);
2134 ir
->array
->accept(this);
2136 this->deref_tail
->child
= &deref
->deref
;
2137 ralloc_steal(this->deref_tail
, deref
);
2138 this->deref_tail
= &deref
->deref
;
2142 nir_visitor::visit(ir_barrier
*ir
)
2144 nir_intrinsic_instr
*instr
=
2145 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2146 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);