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
.patch
= ir
->data
.patch
;
307 var
->data
.invariant
= ir
->data
.invariant
;
308 var
->data
.location
= ir
->data
.location
;
310 switch(ir
->data
.mode
) {
312 case ir_var_temporary
:
314 var
->data
.mode
= nir_var_global
;
316 var
->data
.mode
= nir_var_local
;
319 case ir_var_function_in
:
320 case ir_var_function_out
:
321 case ir_var_function_inout
:
322 case ir_var_const_in
:
323 var
->data
.mode
= nir_var_local
;
326 case ir_var_shader_in
:
327 if (shader
->stage
== MESA_SHADER_FRAGMENT
&&
328 ir
->data
.location
== VARYING_SLOT_FACE
) {
329 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
330 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
331 var
->data
.mode
= nir_var_system_value
;
332 } else if (shader
->stage
== MESA_SHADER_GEOMETRY
&&
333 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
334 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
335 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
336 var
->data
.mode
= nir_var_system_value
;
338 var
->data
.mode
= nir_var_shader_in
;
342 case ir_var_shader_out
:
343 var
->data
.mode
= nir_var_shader_out
;
347 var
->data
.mode
= nir_var_uniform
;
350 case ir_var_shader_storage
:
351 var
->data
.mode
= nir_var_shader_storage
;
354 case ir_var_system_value
:
355 var
->data
.mode
= nir_var_system_value
;
359 unreachable("not reached");
362 var
->data
.interpolation
= ir
->data
.interpolation
;
363 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
364 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
365 var
->data
.explicit_location
= ir
->data
.explicit_location
;
366 var
->data
.explicit_index
= ir
->data
.explicit_index
;
367 var
->data
.explicit_binding
= ir
->data
.explicit_binding
;
368 var
->data
.has_initializer
= ir
->data
.has_initializer
;
369 var
->data
.is_unmatched_generic_inout
= ir
->data
.is_unmatched_generic_inout
;
370 var
->data
.location_frac
= ir
->data
.location_frac
;
371 var
->data
.from_named_ifc_block_array
= ir
->data
.from_named_ifc_block_array
;
372 var
->data
.from_named_ifc_block_nonarray
= ir
->data
.from_named_ifc_block_nonarray
;
374 switch (ir
->data
.depth_layout
) {
375 case ir_depth_layout_none
:
376 var
->data
.depth_layout
= nir_depth_layout_none
;
378 case ir_depth_layout_any
:
379 var
->data
.depth_layout
= nir_depth_layout_any
;
381 case ir_depth_layout_greater
:
382 var
->data
.depth_layout
= nir_depth_layout_greater
;
384 case ir_depth_layout_less
:
385 var
->data
.depth_layout
= nir_depth_layout_less
;
387 case ir_depth_layout_unchanged
:
388 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
391 unreachable("not reached");
394 var
->data
.index
= ir
->data
.index
;
395 var
->data
.binding
= ir
->data
.binding
;
396 var
->data
.atomic
.offset
= ir
->data
.atomic
.offset
;
397 var
->data
.image
.read_only
= ir
->data
.image_read_only
;
398 var
->data
.image
.write_only
= ir
->data
.image_write_only
;
399 var
->data
.image
.coherent
= ir
->data
.image_coherent
;
400 var
->data
.image
._volatile
= ir
->data
.image_volatile
;
401 var
->data
.image
.restrict_flag
= ir
->data
.image_restrict
;
402 var
->data
.image
.format
= ir
->data
.image_format
;
403 var
->data
.max_array_access
= ir
->data
.max_array_access
;
405 var
->num_state_slots
= ir
->get_num_state_slots();
406 if (var
->num_state_slots
> 0) {
407 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
408 var
->num_state_slots
);
410 ir_state_slot
*state_slots
= ir
->get_state_slots();
411 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
412 for (unsigned j
= 0; j
< 5; j
++)
413 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
414 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
417 var
->state_slots
= NULL
;
420 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
422 var
->interface_type
= ir
->get_interface_type();
424 if (var
->data
.mode
== nir_var_local
)
425 nir_function_impl_add_variable(impl
, var
);
427 nir_shader_add_variable(shader
, var
);
429 _mesa_hash_table_insert(var_table
, ir
, var
);
434 nir_function_visitor::visit_enter(ir_function
*ir
)
436 visitor
->create_function(ir
);
437 return visit_continue_with_parent
;
442 nir_visitor::create_function(ir_function
*ir
)
444 nir_function
*func
= nir_function_create(this->shader
, ir
->name
);
445 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
446 create_overload(sig
, func
);
453 nir_visitor::create_overload(ir_function_signature
*ir
, nir_function
*function
)
455 if (ir
->is_intrinsic
)
458 nir_function_overload
*overload
= nir_function_overload_create(function
);
460 unsigned num_params
= ir
->parameters
.length();
461 overload
->num_params
= num_params
;
462 overload
->params
= ralloc_array(shader
, nir_parameter
, num_params
);
465 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
466 switch (param
->data
.mode
) {
467 case ir_var_function_in
:
468 overload
->params
[i
].param_type
= nir_parameter_in
;
471 case ir_var_function_out
:
472 overload
->params
[i
].param_type
= nir_parameter_out
;
475 case ir_var_function_inout
:
476 overload
->params
[i
].param_type
= nir_parameter_inout
;
480 unreachable("not reached");
483 overload
->params
[i
].type
= param
->type
;
487 overload
->return_type
= ir
->return_type
;
489 _mesa_hash_table_insert(this->overload_table
, ir
, overload
);
493 nir_visitor::visit(ir_function
*ir
)
495 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
500 nir_visitor::visit(ir_function_signature
*ir
)
502 if (ir
->is_intrinsic
)
505 struct hash_entry
*entry
=
506 _mesa_hash_table_search(this->overload_table
, ir
);
509 nir_function_overload
*overload
= (nir_function_overload
*) entry
->data
;
511 if (ir
->is_defined
) {
512 nir_function_impl
*impl
= nir_function_impl_create(overload
);
515 unsigned num_params
= overload
->num_params
;
516 impl
->num_params
= num_params
;
517 impl
->params
= ralloc_array(this->shader
, nir_variable
*, num_params
);
519 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
521 impl
->params
[i
] = this->var
;
525 if (overload
->return_type
== glsl_type::void_type
) {
526 impl
->return_var
= NULL
;
528 impl
->return_var
= ralloc(this->shader
, nir_variable
);
529 impl
->return_var
->name
= ralloc_strdup(impl
->return_var
,
531 impl
->return_var
->type
= overload
->return_type
;
534 this->is_global
= false;
536 this->cf_node_list
= &impl
->body
;
537 visit_exec_list(&ir
->body
, this);
539 this->is_global
= true;
541 overload
->impl
= NULL
;
546 nir_visitor::visit(ir_loop
*ir
)
548 exec_list
*old_list
= this->cf_node_list
;
550 nir_loop
*loop
= nir_loop_create(this->shader
);
551 nir_cf_node_insert_end(old_list
, &loop
->cf_node
);
552 this->cf_node_list
= &loop
->body
;
553 visit_exec_list(&ir
->body_instructions
, this);
555 this->cf_node_list
= old_list
;
559 nir_visitor::visit(ir_if
*ir
)
561 nir_src condition
= evaluate_rvalue(ir
->condition
);
563 exec_list
*old_list
= this->cf_node_list
;
565 nir_if
*if_stmt
= nir_if_create(this->shader
);
566 if_stmt
->condition
= condition
;
567 nir_cf_node_insert_end(old_list
, &if_stmt
->cf_node
);
569 this->cf_node_list
= &if_stmt
->then_list
;
570 visit_exec_list(&ir
->then_instructions
, this);
572 this->cf_node_list
= &if_stmt
->else_list
;
573 visit_exec_list(&ir
->else_instructions
, this);
575 this->cf_node_list
= old_list
;
579 nir_visitor::visit(ir_discard
*ir
)
582 * discards aren't treated as control flow, because before we lower them
583 * they can appear anywhere in the shader and the stuff after them may still
584 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
585 * discards will be immediately followed by a return.
588 nir_intrinsic_instr
*discard
;
590 discard
= nir_intrinsic_instr_create(this->shader
,
591 nir_intrinsic_discard_if
);
592 discard
->src
[0] = evaluate_rvalue(ir
->condition
);
594 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
596 nir_instr_insert_after_cf_list(this->cf_node_list
, &discard
->instr
);
600 nir_visitor::visit(ir_emit_vertex
*ir
)
602 nir_intrinsic_instr
*instr
=
603 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
604 instr
->const_index
[0] = ir
->stream_id();
605 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
609 nir_visitor::visit(ir_end_primitive
*ir
)
611 nir_intrinsic_instr
*instr
=
612 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
613 instr
->const_index
[0] = ir
->stream_id();
614 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
618 nir_visitor::visit(ir_loop_jump
*ir
)
622 case ir_loop_jump::jump_break
:
623 type
= nir_jump_break
;
625 case ir_loop_jump::jump_continue
:
626 type
= nir_jump_continue
;
629 unreachable("not reached");
632 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
633 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
637 nir_visitor::visit(ir_return
*ir
)
639 if (ir
->value
!= NULL
) {
640 nir_intrinsic_instr
*copy
=
641 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
643 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
644 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
647 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
648 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
652 nir_visitor::visit(ir_call
*ir
)
654 if (ir
->callee
->is_intrinsic
) {
656 if (strcmp(ir
->callee_name(), "__intrinsic_atomic_read") == 0) {
657 op
= nir_intrinsic_atomic_counter_read_var
;
658 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_increment") == 0) {
659 op
= nir_intrinsic_atomic_counter_inc_var
;
660 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_predecrement") == 0) {
661 op
= nir_intrinsic_atomic_counter_dec_var
;
662 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_load") == 0) {
663 op
= nir_intrinsic_image_load
;
664 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_store") == 0) {
665 op
= nir_intrinsic_image_store
;
666 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_add") == 0) {
667 op
= nir_intrinsic_image_atomic_add
;
668 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_min") == 0) {
669 op
= nir_intrinsic_image_atomic_min
;
670 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_max") == 0) {
671 op
= nir_intrinsic_image_atomic_max
;
672 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_and") == 0) {
673 op
= nir_intrinsic_image_atomic_and
;
674 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_or") == 0) {
675 op
= nir_intrinsic_image_atomic_or
;
676 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_xor") == 0) {
677 op
= nir_intrinsic_image_atomic_xor
;
678 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_exchange") == 0) {
679 op
= nir_intrinsic_image_atomic_exchange
;
680 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_comp_swap") == 0) {
681 op
= nir_intrinsic_image_atomic_comp_swap
;
682 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier") == 0) {
683 op
= nir_intrinsic_memory_barrier
;
684 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_size") == 0) {
685 op
= nir_intrinsic_image_size
;
686 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_samples") == 0) {
687 op
= nir_intrinsic_image_samples
;
688 } else if (strcmp(ir
->callee_name(), "__intrinsic_store_ssbo") == 0) {
689 op
= nir_intrinsic_store_ssbo
;
690 } else if (strcmp(ir
->callee_name(), "__intrinsic_load_ssbo") == 0) {
691 op
= nir_intrinsic_load_ssbo
;
692 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_add_internal") == 0) {
693 op
= nir_intrinsic_ssbo_atomic_add
;
694 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_and_internal") == 0) {
695 op
= nir_intrinsic_ssbo_atomic_and
;
696 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_or_internal") == 0) {
697 op
= nir_intrinsic_ssbo_atomic_or
;
698 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_xor_internal") == 0) {
699 op
= nir_intrinsic_ssbo_atomic_xor
;
700 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_min_internal") == 0) {
701 assert(ir
->return_deref
);
702 if (ir
->return_deref
->type
== glsl_type::int_type
)
703 op
= nir_intrinsic_ssbo_atomic_imin
;
704 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
705 op
= nir_intrinsic_ssbo_atomic_umin
;
707 unreachable("Invalid type");
708 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_max_internal") == 0) {
709 assert(ir
->return_deref
);
710 if (ir
->return_deref
->type
== glsl_type::int_type
)
711 op
= nir_intrinsic_ssbo_atomic_imax
;
712 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
713 op
= nir_intrinsic_ssbo_atomic_umax
;
715 unreachable("Invalid type");
716 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_exchange_internal") == 0) {
717 op
= nir_intrinsic_ssbo_atomic_exchange
;
718 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_comp_swap_internal") == 0) {
719 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
720 } else if (strcmp(ir
->callee_name(), "__intrinsic_shader_clock") == 0) {
721 op
= nir_intrinsic_shader_clock
;
723 unreachable("not reached");
726 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
727 nir_dest
*dest
= &instr
->dest
;
730 case nir_intrinsic_atomic_counter_read_var
:
731 case nir_intrinsic_atomic_counter_inc_var
:
732 case nir_intrinsic_atomic_counter_dec_var
: {
733 ir_dereference
*param
=
734 (ir_dereference
*) ir
->actual_parameters
.get_head();
735 instr
->variables
[0] = evaluate_deref(&instr
->instr
, param
);
736 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, NULL
);
737 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
740 case nir_intrinsic_image_load
:
741 case nir_intrinsic_image_store
:
742 case nir_intrinsic_image_atomic_add
:
743 case nir_intrinsic_image_atomic_min
:
744 case nir_intrinsic_image_atomic_max
:
745 case nir_intrinsic_image_atomic_and
:
746 case nir_intrinsic_image_atomic_or
:
747 case nir_intrinsic_image_atomic_xor
:
748 case nir_intrinsic_image_atomic_exchange
:
749 case nir_intrinsic_image_atomic_comp_swap
:
750 case nir_intrinsic_image_samples
:
751 case nir_intrinsic_image_size
: {
752 nir_ssa_undef_instr
*instr_undef
=
753 nir_ssa_undef_instr_create(shader
, 1);
754 nir_instr_insert_after_cf_list(this->cf_node_list
,
755 &instr_undef
->instr
);
757 /* Set the image variable dereference. */
758 exec_node
*param
= ir
->actual_parameters
.get_head();
759 ir_dereference
*image
= (ir_dereference
*)param
;
760 const glsl_type
*type
=
761 image
->variable_referenced()->type
->without_array();
763 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
764 param
= param
->get_next();
766 /* Set the intrinsic destination. */
767 if (ir
->return_deref
) {
768 const nir_intrinsic_info
*info
=
769 &nir_intrinsic_infos
[instr
->intrinsic
];
770 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
771 info
->dest_components
, NULL
);
774 if (op
== nir_intrinsic_image_size
||
775 op
== nir_intrinsic_image_samples
) {
776 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
780 /* Set the address argument, extending the coordinate vector to four
783 const nir_src src_addr
= evaluate_rvalue((ir_dereference
*)param
);
784 nir_alu_instr
*instr_addr
= nir_alu_instr_create(shader
, nir_op_vec4
);
785 nir_ssa_dest_init(&instr_addr
->instr
, &instr_addr
->dest
.dest
, 4, NULL
);
787 for (int i
= 0; i
< 4; i
++) {
788 if (i
< type
->coordinate_components()) {
789 instr_addr
->src
[i
].src
= src_addr
;
790 instr_addr
->src
[i
].swizzle
[0] = i
;
792 instr_addr
->src
[i
].src
= nir_src_for_ssa(&instr_undef
->def
);
796 nir_instr_insert_after_cf_list(cf_node_list
, &instr_addr
->instr
);
797 instr
->src
[0] = nir_src_for_ssa(&instr_addr
->dest
.dest
.ssa
);
798 param
= param
->get_next();
800 /* Set the sample argument, which is undefined for single-sample
803 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
804 instr
->src
[1] = evaluate_rvalue((ir_dereference
*)param
);
805 param
= param
->get_next();
807 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
810 /* Set the intrinsic parameters. */
811 if (!param
->is_tail_sentinel()) {
812 instr
->src
[2] = evaluate_rvalue((ir_dereference
*)param
);
813 param
= param
->get_next();
816 if (!param
->is_tail_sentinel()) {
817 instr
->src
[3] = evaluate_rvalue((ir_dereference
*)param
);
818 param
= param
->get_next();
820 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
823 case nir_intrinsic_memory_barrier
:
824 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
826 case nir_intrinsic_shader_clock
:
827 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, NULL
);
828 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
830 case nir_intrinsic_store_ssbo
: {
831 exec_node
*param
= ir
->actual_parameters
.get_head();
832 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
834 param
= param
->get_next();
835 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
837 param
= param
->get_next();
838 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
840 param
= param
->get_next();
841 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
844 /* Check if we need the indirect version */
845 ir_constant
*const_offset
= offset
->as_constant();
847 op
= nir_intrinsic_store_ssbo_indirect
;
849 instr
= nir_intrinsic_instr_create(shader
, op
);
850 instr
->src
[2] = evaluate_rvalue(offset
);
851 instr
->const_index
[0] = 0;
853 instr
->const_index
[0] = const_offset
->value
.u
[0];
856 instr
->const_index
[1] = write_mask
->value
.u
[0];
858 instr
->src
[0] = evaluate_rvalue(val
);
859 instr
->num_components
= val
->type
->vector_elements
;
861 instr
->src
[1] = evaluate_rvalue(block
);
862 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
865 case nir_intrinsic_load_ssbo
: {
866 exec_node
*param
= ir
->actual_parameters
.get_head();
867 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
869 param
= param
->get_next();
870 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
872 /* Check if we need the indirect version */
873 ir_constant
*const_offset
= offset
->as_constant();
875 op
= nir_intrinsic_load_ssbo_indirect
;
877 instr
= nir_intrinsic_instr_create(shader
, op
);
878 instr
->src
[1] = evaluate_rvalue(offset
);
879 instr
->const_index
[0] = 0;
882 instr
->const_index
[0] = const_offset
->value
.u
[0];
885 instr
->src
[0] = evaluate_rvalue(block
);
887 const glsl_type
*type
= ir
->return_deref
->var
->type
;
888 instr
->num_components
= type
->vector_elements
;
890 /* Setup destination register */
891 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
892 type
->vector_elements
, NULL
);
894 /* Insert the created nir instruction now since in the case of boolean
895 * result we will need to emit another instruction after it
897 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
900 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
901 * consider a true boolean to be ~0. Fix this up with a != 0
904 if (type
->base_type
== GLSL_TYPE_BOOL
) {
905 nir_load_const_instr
*const_zero
=
906 nir_load_const_instr_create(shader
, 1);
907 const_zero
->value
.u
[0] = 0;
908 nir_instr_insert_after_cf_list(this->cf_node_list
,
911 nir_alu_instr
*load_ssbo_compare
=
912 nir_alu_instr_create(shader
, nir_op_ine
);
913 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
914 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
915 load_ssbo_compare
->src
[1].src
.is_ssa
= true;
916 load_ssbo_compare
->src
[1].src
.ssa
= &const_zero
->def
;
917 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
918 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
919 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
920 &load_ssbo_compare
->dest
.dest
,
921 type
->vector_elements
, NULL
);
922 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
923 nir_instr_insert_after_cf_list(this->cf_node_list
,
924 &load_ssbo_compare
->instr
);
925 dest
= &load_ssbo_compare
->dest
.dest
;
929 case nir_intrinsic_ssbo_atomic_add
:
930 case nir_intrinsic_ssbo_atomic_imin
:
931 case nir_intrinsic_ssbo_atomic_umin
:
932 case nir_intrinsic_ssbo_atomic_imax
:
933 case nir_intrinsic_ssbo_atomic_umax
:
934 case nir_intrinsic_ssbo_atomic_and
:
935 case nir_intrinsic_ssbo_atomic_or
:
936 case nir_intrinsic_ssbo_atomic_xor
:
937 case nir_intrinsic_ssbo_atomic_exchange
:
938 case nir_intrinsic_ssbo_atomic_comp_swap
: {
939 int param_count
= ir
->actual_parameters
.length();
940 assert(param_count
== 3 || param_count
== 4);
943 exec_node
*param
= ir
->actual_parameters
.get_head();
944 ir_instruction
*inst
= (ir_instruction
*) param
;
945 instr
->src
[0] = evaluate_rvalue(inst
->as_rvalue());
948 param
= param
->get_next();
949 inst
= (ir_instruction
*) param
;
950 instr
->src
[1] = evaluate_rvalue(inst
->as_rvalue());
952 /* data1 parameter (this is always present) */
953 param
= param
->get_next();
954 inst
= (ir_instruction
*) param
;
955 instr
->src
[2] = evaluate_rvalue(inst
->as_rvalue());
957 /* data2 parameter (only with atomic_comp_swap) */
958 if (param_count
== 4) {
959 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
960 param
= param
->get_next();
961 inst
= (ir_instruction
*) param
;
962 instr
->src
[3] = evaluate_rvalue(inst
->as_rvalue());
966 assert(ir
->return_deref
);
967 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
968 ir
->return_deref
->type
->vector_elements
, NULL
);
969 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
973 unreachable("not reached");
976 if (ir
->return_deref
) {
977 nir_intrinsic_instr
*store_instr
=
978 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
979 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
981 store_instr
->variables
[0] =
982 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
983 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
985 nir_instr_insert_after_cf_list(this->cf_node_list
,
986 &store_instr
->instr
);
992 struct hash_entry
*entry
=
993 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
995 nir_function_overload
*callee
= (nir_function_overload
*) entry
->data
;
997 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
1000 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
1001 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
1005 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
1006 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
1010 nir_visitor::visit(ir_assignment
*ir
)
1012 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1014 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1015 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1016 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1017 nir_intrinsic_instr
*copy
=
1018 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1020 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1021 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1023 if (ir
->condition
) {
1024 nir_if
*if_stmt
= nir_if_create(this->shader
);
1025 if_stmt
->condition
= evaluate_rvalue(ir
->condition
);
1026 nir_cf_node_insert_end(this->cf_node_list
, &if_stmt
->cf_node
);
1027 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, ©
->instr
);
1029 nir_instr_insert_after_cf_list(this->cf_node_list
, ©
->instr
);
1034 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1036 ir
->lhs
->accept(this);
1037 nir_deref_var
*lhs_deref
= this->deref_head
;
1038 nir_src src
= evaluate_rvalue(ir
->rhs
);
1040 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1042 * We have no good way to update only part of a variable, so just load
1043 * the LHS and do a vec operation to combine the old with the new, and
1045 * back into the LHS. Copy propagation should get rid of the mess.
1048 nir_intrinsic_instr
*load
=
1049 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1050 load
->num_components
= ir
->lhs
->type
->vector_elements
;
1051 nir_ssa_dest_init(&load
->instr
, &load
->dest
, num_components
, NULL
);
1052 load
->variables
[0] = lhs_deref
;
1053 ralloc_steal(load
, load
->variables
[0]);
1054 nir_instr_insert_after_cf_list(this->cf_node_list
, &load
->instr
);
1057 switch (ir
->lhs
->type
->vector_elements
) {
1058 case 1: vec_op
= nir_op_imov
; break;
1059 case 2: vec_op
= nir_op_vec2
; break;
1060 case 3: vec_op
= nir_op_vec3
; break;
1061 case 4: vec_op
= nir_op_vec4
; break;
1062 default: unreachable("Invalid number of components"); break;
1064 nir_alu_instr
*vec
= nir_alu_instr_create(this->shader
, vec_op
);
1065 nir_ssa_dest_init(&vec
->instr
, &vec
->dest
.dest
, num_components
, NULL
);
1066 vec
->dest
.write_mask
= (1 << num_components
) - 1;
1068 unsigned component
= 0;
1069 for (unsigned i
= 0; i
< ir
->lhs
->type
->vector_elements
; i
++) {
1070 if (ir
->write_mask
& (1 << i
)) {
1071 vec
->src
[i
].src
= src
;
1073 /* GLSL IR will give us the input to the write-masked assignment
1074 * in a single packed vector. So, for example, if the
1075 * writemask is xzw, then we have to swizzle x -> x, y -> z,
1076 * and z -> w and get the y component from the load.
1078 vec
->src
[i
].swizzle
[0] = component
++;
1080 vec
->src
[i
].src
.is_ssa
= true;
1081 vec
->src
[i
].src
.ssa
= &load
->dest
.ssa
;
1082 vec
->src
[i
].swizzle
[0] = i
;
1086 nir_instr_insert_after_cf_list(this->cf_node_list
, &vec
->instr
);
1089 src
.ssa
= &vec
->dest
.dest
.ssa
;
1092 nir_intrinsic_instr
*store
=
1093 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1094 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1095 nir_deref
*store_deref
= nir_copy_deref(store
, &lhs_deref
->deref
);
1096 store
->variables
[0] = nir_deref_as_var(store_deref
);
1097 store
->src
[0] = src
;
1099 if (ir
->condition
) {
1100 nir_if
*if_stmt
= nir_if_create(this->shader
);
1101 if_stmt
->condition
= evaluate_rvalue(ir
->condition
);
1102 nir_cf_node_insert_end(this->cf_node_list
, &if_stmt
->cf_node
);
1103 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, &store
->instr
);
1105 nir_instr_insert_after_cf_list(this->cf_node_list
, &store
->instr
);
1110 * Given an instruction, returns a pointer to its destination or NULL if there
1111 * is no destination.
1113 * Note that this only handles instructions we generate at this level.
1116 get_instr_dest(nir_instr
*instr
)
1118 nir_alu_instr
*alu_instr
;
1119 nir_intrinsic_instr
*intrinsic_instr
;
1120 nir_tex_instr
*tex_instr
;
1122 switch (instr
->type
) {
1123 case nir_instr_type_alu
:
1124 alu_instr
= nir_instr_as_alu(instr
);
1125 return &alu_instr
->dest
.dest
;
1127 case nir_instr_type_intrinsic
:
1128 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1129 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1130 return &intrinsic_instr
->dest
;
1134 case nir_instr_type_tex
:
1135 tex_instr
= nir_instr_as_tex(instr
);
1136 return &tex_instr
->dest
;
1139 unreachable("not reached");
1146 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
)
1148 nir_dest
*dest
= get_instr_dest(instr
);
1151 nir_ssa_dest_init(instr
, dest
, num_components
, NULL
);
1153 nir_instr_insert_after_cf_list(this->cf_node_list
, instr
);
1154 this->result
= instr
;
1158 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1161 if (ir
->as_dereference() || ir
->as_constant()) {
1163 * A dereference is being used on the right hand side, which means we
1164 * must emit a variable load.
1167 nir_intrinsic_instr
*load_instr
=
1168 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1169 load_instr
->num_components
= ir
->type
->vector_elements
;
1170 load_instr
->variables
[0] = this->deref_head
;
1171 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1172 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
);
1175 nir_dest
*dest
= get_instr_dest(this->result
);
1176 assert(dest
->is_ssa
);
1178 return nir_src_for_ssa(&dest
->ssa
);
1182 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src
*srcs
)
1184 nir_alu_instr
*instr
= nir_alu_instr_create(this->shader
, op
);
1185 for (unsigned i
= 0; i
< nir_op_infos
[op
].num_inputs
; i
++)
1186 instr
->src
[i
].src
= srcs
[i
];
1187 instr
->dest
.write_mask
= (1 << dest_size
) - 1;
1188 add_instr(&instr
->instr
, dest_size
);
1193 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src src1
)
1195 assert(nir_op_infos
[op
].num_inputs
== 1);
1196 return emit(op
, dest_size
, &src1
);
1200 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src src1
,
1203 assert(nir_op_infos
[op
].num_inputs
== 2);
1204 nir_src srcs
[] = { src1
, src2
};
1205 return emit(op
, dest_size
, srcs
);
1209 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src src1
,
1210 nir_src src2
, nir_src src3
)
1212 assert(nir_op_infos
[op
].num_inputs
== 3);
1213 nir_src srcs
[] = { src1
, src2
, src3
};
1214 return emit(op
, dest_size
, srcs
);
1218 nir_visitor::visit(ir_expression
*ir
)
1220 /* Some special cases */
1221 switch (ir
->operation
) {
1222 case ir_binop_ubo_load
: {
1223 ir_constant
*const_index
= ir
->operands
[1]->as_constant();
1225 nir_intrinsic_op op
;
1227 op
= nir_intrinsic_load_ubo
;
1229 op
= nir_intrinsic_load_ubo_indirect
;
1231 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(this->shader
, op
);
1232 load
->num_components
= ir
->type
->vector_elements
;
1233 load
->const_index
[0] = const_index
? const_index
->value
.u
[0] : 0; /* base offset */
1234 load
->src
[0] = evaluate_rvalue(ir
->operands
[0]);
1236 load
->src
[1] = evaluate_rvalue(ir
->operands
[1]);
1237 add_instr(&load
->instr
, ir
->type
->vector_elements
);
1240 * In UBO's, a true boolean value is any non-zero value, but we consider
1241 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1244 if (ir
->type
->base_type
== GLSL_TYPE_BOOL
) {
1245 nir_load_const_instr
*const_zero
= nir_load_const_instr_create(shader
, 1);
1246 const_zero
->value
.u
[0] = 0;
1247 nir_instr_insert_after_cf_list(this->cf_node_list
, &const_zero
->instr
);
1249 nir_alu_instr
*compare
= nir_alu_instr_create(shader
, nir_op_ine
);
1250 compare
->src
[0].src
.is_ssa
= true;
1251 compare
->src
[0].src
.ssa
= &load
->dest
.ssa
;
1252 compare
->src
[1].src
.is_ssa
= true;
1253 compare
->src
[1].src
.ssa
= &const_zero
->def
;
1254 for (unsigned i
= 0; i
< ir
->type
->vector_elements
; i
++)
1255 compare
->src
[1].swizzle
[i
] = 0;
1256 compare
->dest
.write_mask
= (1 << ir
->type
->vector_elements
) - 1;
1258 add_instr(&compare
->instr
, ir
->type
->vector_elements
);
1264 case ir_unop_interpolate_at_centroid
:
1265 case ir_binop_interpolate_at_offset
:
1266 case ir_binop_interpolate_at_sample
: {
1267 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1268 ir_swizzle
*swizzle
= NULL
;
1270 /* the api does not allow a swizzle here, but the varying packing code
1271 * may have pushed one into here.
1273 swizzle
= ir
->operands
[0]->as_swizzle();
1275 deref
= swizzle
->val
->as_dereference();
1279 deref
->accept(this);
1281 nir_intrinsic_op op
;
1282 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1283 switch (ir
->operation
) {
1284 case ir_unop_interpolate_at_centroid
:
1285 op
= nir_intrinsic_interp_var_at_centroid
;
1287 case ir_binop_interpolate_at_offset
:
1288 op
= nir_intrinsic_interp_var_at_offset
;
1290 case ir_binop_interpolate_at_sample
:
1291 op
= nir_intrinsic_interp_var_at_sample
;
1294 unreachable("Invalid interpolation intrinsic");
1297 /* This case can happen if the vertex shader does not write the
1298 * given varying. In this case, the linker will lower it to a
1299 * global variable. Since interpolating a variable makes no
1300 * sense, we'll just turn it into a load which will probably
1301 * eventually end up as an SSA definition.
1303 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1304 op
= nir_intrinsic_load_var
;
1307 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1308 intrin
->num_components
= deref
->type
->vector_elements
;
1309 intrin
->variables
[0] = this->deref_head
;
1310 ralloc_steal(intrin
, intrin
->variables
[0]);
1312 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1313 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1314 intrin
->src
[0] = evaluate_rvalue(ir
->operands
[1]);
1316 add_instr(&intrin
->instr
, deref
->type
->vector_elements
);
1319 nir_alu_instr
*mov
= nir_alu_instr_create(shader
, nir_op_imov
);
1320 mov
->dest
.write_mask
= (1 << swizzle
->type
->vector_elements
) - 1;
1321 mov
->src
[0].src
.is_ssa
= true;
1322 mov
->src
[0].src
.ssa
= &intrin
->dest
.ssa
;
1324 mov
->src
[0].swizzle
[0] = swizzle
->mask
.x
;
1325 mov
->src
[0].swizzle
[1] = swizzle
->mask
.y
;
1326 mov
->src
[0].swizzle
[2] = swizzle
->mask
.z
;
1327 mov
->src
[0].swizzle
[3] = swizzle
->mask
.w
;
1328 for (unsigned i
= deref
->type
->vector_elements
; i
< 4; i
++)
1329 mov
->src
[0].swizzle
[i
] = 0;
1331 add_instr(&mov
->instr
, swizzle
->type
->vector_elements
);
1342 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1343 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1345 glsl_base_type types
[4];
1346 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1348 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1350 types
[i
] = GLSL_TYPE_FLOAT
;
1352 glsl_base_type out_type
;
1354 out_type
= ir
->type
->base_type
;
1356 out_type
= GLSL_TYPE_FLOAT
;
1358 unsigned dest_size
= ir
->type
->vector_elements
;
1360 nir_alu_instr
*instr
;
1363 switch (ir
->operation
) {
1364 case ir_unop_bit_not
: emit(nir_op_inot
, dest_size
, srcs
); break;
1365 case ir_unop_logic_not
:
1366 emit(supports_ints
? nir_op_inot
: nir_op_fnot
, dest_size
, srcs
);
1369 instr
= emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fneg
: nir_op_ineg
,
1373 instr
= emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fabs
: nir_op_iabs
,
1376 case ir_unop_saturate
:
1377 assert(types
[0] == GLSL_TYPE_FLOAT
);
1378 instr
= emit(nir_op_fsat
, dest_size
, srcs
);
1381 emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fsign
: nir_op_isign
,
1384 case ir_unop_rcp
: emit(nir_op_frcp
, dest_size
, srcs
); break;
1385 case ir_unop_rsq
: emit(nir_op_frsq
, dest_size
, srcs
); break;
1386 case ir_unop_sqrt
: emit(nir_op_fsqrt
, dest_size
, srcs
); break;
1387 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1388 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1389 case ir_unop_exp2
: emit(nir_op_fexp2
, dest_size
, srcs
); break;
1390 case ir_unop_log2
: emit(nir_op_flog2
, dest_size
, srcs
); break;
1392 emit(supports_ints
? nir_op_i2f
: nir_op_fmov
, dest_size
, srcs
);
1395 emit(supports_ints
? nir_op_u2f
: nir_op_fmov
, dest_size
, srcs
);
1398 emit(supports_ints
? nir_op_b2f
: nir_op_fmov
, dest_size
, srcs
);
1400 case ir_unop_f2i
: emit(nir_op_f2i
, dest_size
, srcs
); break;
1401 case ir_unop_f2u
: emit(nir_op_f2u
, dest_size
, srcs
); break;
1402 case ir_unop_f2b
: emit(nir_op_f2b
, dest_size
, srcs
); break;
1403 case ir_unop_i2b
: emit(nir_op_i2b
, dest_size
, srcs
); break;
1404 case ir_unop_b2i
: emit(nir_op_b2i
, dest_size
, srcs
); break;
1407 case ir_unop_bitcast_i2f
:
1408 case ir_unop_bitcast_f2i
:
1409 case ir_unop_bitcast_u2f
:
1410 case ir_unop_bitcast_f2u
:
1411 case ir_unop_subroutine_to_int
:
1413 emit(nir_op_imov
, dest_size
, srcs
);
1416 switch (ir
->operands
[0]->type
->vector_elements
) {
1418 emit(supports_ints
? nir_op_bany2
: nir_op_fany2
,
1422 emit(supports_ints
? nir_op_bany3
: nir_op_fany3
,
1426 emit(supports_ints
? nir_op_bany4
: nir_op_fany4
,
1430 unreachable("not reached");
1433 case ir_unop_trunc
: emit(nir_op_ftrunc
, dest_size
, srcs
); break;
1434 case ir_unop_ceil
: emit(nir_op_fceil
, dest_size
, srcs
); break;
1435 case ir_unop_floor
: emit(nir_op_ffloor
, dest_size
, srcs
); break;
1436 case ir_unop_fract
: emit(nir_op_ffract
, dest_size
, srcs
); break;
1437 case ir_unop_round_even
: emit(nir_op_fround_even
, dest_size
, srcs
); break;
1438 case ir_unop_sin
: emit(nir_op_fsin
, dest_size
, srcs
); break;
1439 case ir_unop_cos
: emit(nir_op_fcos
, dest_size
, srcs
); break;
1440 case ir_unop_dFdx
: emit(nir_op_fddx
, dest_size
, srcs
); break;
1441 case ir_unop_dFdy
: emit(nir_op_fddy
, dest_size
, srcs
); break;
1442 case ir_unop_dFdx_fine
: emit(nir_op_fddx_fine
, dest_size
, srcs
); break;
1443 case ir_unop_dFdy_fine
: emit(nir_op_fddy_fine
, dest_size
, srcs
); break;
1444 case ir_unop_dFdx_coarse
: emit(nir_op_fddx_coarse
, dest_size
, srcs
); break;
1445 case ir_unop_dFdy_coarse
: emit(nir_op_fddy_coarse
, dest_size
, srcs
); break;
1446 case ir_unop_pack_snorm_2x16
:
1447 emit(nir_op_pack_snorm_2x16
, dest_size
, srcs
);
1449 case ir_unop_pack_snorm_4x8
:
1450 emit(nir_op_pack_snorm_4x8
, dest_size
, srcs
);
1452 case ir_unop_pack_unorm_2x16
:
1453 emit(nir_op_pack_unorm_2x16
, dest_size
, srcs
);
1455 case ir_unop_pack_unorm_4x8
:
1456 emit(nir_op_pack_unorm_4x8
, dest_size
, srcs
);
1458 case ir_unop_pack_half_2x16
:
1459 emit(nir_op_pack_half_2x16
, dest_size
, srcs
);
1461 case ir_unop_unpack_snorm_2x16
:
1462 emit(nir_op_unpack_snorm_2x16
, dest_size
, srcs
);
1464 case ir_unop_unpack_snorm_4x8
:
1465 emit(nir_op_unpack_snorm_4x8
, dest_size
, srcs
);
1467 case ir_unop_unpack_unorm_2x16
:
1468 emit(nir_op_unpack_unorm_2x16
, dest_size
, srcs
);
1470 case ir_unop_unpack_unorm_4x8
:
1471 emit(nir_op_unpack_unorm_4x8
, dest_size
, srcs
);
1473 case ir_unop_unpack_half_2x16
:
1474 emit(nir_op_unpack_half_2x16
, dest_size
, srcs
);
1476 case ir_unop_unpack_half_2x16_split_x
:
1477 emit(nir_op_unpack_half_2x16_split_x
, dest_size
, srcs
);
1479 case ir_unop_unpack_half_2x16_split_y
:
1480 emit(nir_op_unpack_half_2x16_split_y
, dest_size
, srcs
);
1482 case ir_unop_bitfield_reverse
:
1483 emit(nir_op_bitfield_reverse
, dest_size
, srcs
);
1485 case ir_unop_bit_count
:
1486 emit(nir_op_bit_count
, dest_size
, srcs
);
1488 case ir_unop_find_msb
:
1490 case GLSL_TYPE_UINT
:
1491 emit(nir_op_ufind_msb
, dest_size
, srcs
);
1494 emit(nir_op_ifind_msb
, dest_size
, srcs
);
1497 unreachable("Invalid type for findMSB()");
1500 case ir_unop_find_lsb
:
1501 emit(nir_op_find_lsb
, dest_size
, srcs
);
1505 switch (ir
->type
->vector_elements
) {
1507 switch (ir
->operands
[0]->type
->vector_elements
) {
1508 case 1: emit(nir_op_fnoise1_1
, dest_size
, srcs
); break;
1509 case 2: emit(nir_op_fnoise1_2
, dest_size
, srcs
); break;
1510 case 3: emit(nir_op_fnoise1_3
, dest_size
, srcs
); break;
1511 case 4: emit(nir_op_fnoise1_4
, dest_size
, srcs
); break;
1512 default: unreachable("not reached");
1516 switch (ir
->operands
[0]->type
->vector_elements
) {
1517 case 1: emit(nir_op_fnoise2_1
, dest_size
, srcs
); break;
1518 case 2: emit(nir_op_fnoise2_2
, dest_size
, srcs
); break;
1519 case 3: emit(nir_op_fnoise2_3
, dest_size
, srcs
); break;
1520 case 4: emit(nir_op_fnoise2_4
, dest_size
, srcs
); break;
1521 default: unreachable("not reached");
1525 switch (ir
->operands
[0]->type
->vector_elements
) {
1526 case 1: emit(nir_op_fnoise3_1
, dest_size
, srcs
); break;
1527 case 2: emit(nir_op_fnoise3_2
, dest_size
, srcs
); break;
1528 case 3: emit(nir_op_fnoise3_3
, dest_size
, srcs
); break;
1529 case 4: emit(nir_op_fnoise3_4
, dest_size
, srcs
); break;
1530 default: unreachable("not reached");
1534 switch (ir
->operands
[0]->type
->vector_elements
) {
1535 case 1: emit(nir_op_fnoise4_1
, dest_size
, srcs
); break;
1536 case 2: emit(nir_op_fnoise4_2
, dest_size
, srcs
); break;
1537 case 3: emit(nir_op_fnoise4_3
, dest_size
, srcs
); break;
1538 case 4: emit(nir_op_fnoise4_4
, dest_size
, srcs
); break;
1539 default: unreachable("not reached");
1543 unreachable("not reached");
1546 case ir_unop_get_buffer_size
: {
1547 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1549 nir_intrinsic_get_buffer_size
);
1550 load
->num_components
= ir
->type
->vector_elements
;
1551 load
->src
[0] = evaluate_rvalue(ir
->operands
[0]);
1552 add_instr(&load
->instr
, ir
->type
->vector_elements
);
1564 case ir_binop_bit_and
:
1565 case ir_binop_bit_or
:
1566 case ir_binop_bit_xor
:
1567 case ir_binop_logic_and
:
1568 case ir_binop_logic_or
:
1569 case ir_binop_logic_xor
:
1570 case ir_binop_lshift
:
1571 case ir_binop_rshift
:
1572 switch (ir
->operation
) {
1574 if (out_type
== GLSL_TYPE_FLOAT
)
1580 if (out_type
== GLSL_TYPE_FLOAT
)
1586 if (out_type
== GLSL_TYPE_FLOAT
)
1592 if (out_type
== GLSL_TYPE_FLOAT
)
1594 else if (out_type
== GLSL_TYPE_INT
)
1600 if (out_type
== GLSL_TYPE_FLOAT
)
1606 if (out_type
== GLSL_TYPE_FLOAT
)
1608 else if (out_type
== GLSL_TYPE_INT
)
1614 if (out_type
== GLSL_TYPE_FLOAT
)
1616 else if (out_type
== GLSL_TYPE_INT
)
1621 case ir_binop_bit_and
:
1624 case ir_binop_bit_or
:
1627 case ir_binop_bit_xor
:
1630 case ir_binop_logic_and
:
1636 case ir_binop_logic_or
:
1642 case ir_binop_logic_xor
:
1648 case ir_binop_lshift
:
1651 case ir_binop_rshift
:
1652 if (out_type
== GLSL_TYPE_INT
)
1662 unreachable("not reached");
1665 instr
= emit(op
, dest_size
, srcs
);
1667 if (ir
->operands
[0]->type
->vector_elements
!= 1 &&
1668 ir
->operands
[1]->type
->vector_elements
== 1) {
1669 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
;
1671 instr
->src
[1].swizzle
[i
] = 0;
1675 if (ir
->operands
[1]->type
->vector_elements
!= 1 &&
1676 ir
->operands
[0]->type
->vector_elements
== 1) {
1677 for (unsigned i
= 0; i
< ir
->operands
[1]->type
->vector_elements
;
1679 instr
->src
[0].swizzle
[i
] = 0;
1684 case ir_binop_imul_high
:
1685 emit(out_type
== GLSL_TYPE_UINT
? nir_op_umul_high
: nir_op_imul_high
,
1688 case ir_binop_carry
: emit(nir_op_uadd_carry
, dest_size
, srcs
); break;
1689 case ir_binop_borrow
: emit(nir_op_usub_borrow
, dest_size
, srcs
); break;
1691 if (supports_ints
) {
1692 if (types
[0] == GLSL_TYPE_FLOAT
)
1693 emit(nir_op_flt
, dest_size
, srcs
);
1694 else if (types
[0] == GLSL_TYPE_INT
)
1695 emit(nir_op_ilt
, dest_size
, srcs
);
1697 emit(nir_op_ult
, dest_size
, srcs
);
1699 emit(nir_op_slt
, dest_size
, srcs
);
1702 case ir_binop_greater
:
1703 if (supports_ints
) {
1704 if (types
[0] == GLSL_TYPE_FLOAT
)
1705 emit(nir_op_flt
, dest_size
, srcs
[1], srcs
[0]);
1706 else if (types
[0] == GLSL_TYPE_INT
)
1707 emit(nir_op_ilt
, dest_size
, srcs
[1], srcs
[0]);
1709 emit(nir_op_ult
, dest_size
, srcs
[1], srcs
[0]);
1711 emit(nir_op_slt
, dest_size
, srcs
[1], srcs
[0]);
1714 case ir_binop_lequal
:
1715 if (supports_ints
) {
1716 if (types
[0] == GLSL_TYPE_FLOAT
)
1717 emit(nir_op_fge
, dest_size
, srcs
[1], srcs
[0]);
1718 else if (types
[0] == GLSL_TYPE_INT
)
1719 emit(nir_op_ige
, dest_size
, srcs
[1], srcs
[0]);
1721 emit(nir_op_uge
, dest_size
, srcs
[1], srcs
[0]);
1723 emit(nir_op_slt
, dest_size
, srcs
[1], srcs
[0]);
1726 case ir_binop_gequal
:
1727 if (supports_ints
) {
1728 if (types
[0] == GLSL_TYPE_FLOAT
)
1729 emit(nir_op_fge
, dest_size
, srcs
);
1730 else if (types
[0] == GLSL_TYPE_INT
)
1731 emit(nir_op_ige
, dest_size
, srcs
);
1733 emit(nir_op_uge
, dest_size
, srcs
);
1735 emit(nir_op_slt
, dest_size
, srcs
);
1738 case ir_binop_equal
:
1739 if (supports_ints
) {
1740 if (types
[0] == GLSL_TYPE_FLOAT
)
1741 emit(nir_op_feq
, dest_size
, srcs
);
1743 emit(nir_op_ieq
, dest_size
, srcs
);
1745 emit(nir_op_seq
, dest_size
, srcs
);
1748 case ir_binop_nequal
:
1749 if (supports_ints
) {
1750 if (types
[0] == GLSL_TYPE_FLOAT
)
1751 emit(nir_op_fne
, dest_size
, srcs
);
1753 emit(nir_op_ine
, dest_size
, srcs
);
1755 emit(nir_op_sne
, dest_size
, srcs
);
1758 case ir_binop_all_equal
:
1759 if (supports_ints
) {
1760 if (types
[0] == GLSL_TYPE_FLOAT
) {
1761 switch (ir
->operands
[0]->type
->vector_elements
) {
1762 case 1: emit(nir_op_feq
, dest_size
, srcs
); break;
1763 case 2: emit(nir_op_ball_fequal2
, dest_size
, srcs
); break;
1764 case 3: emit(nir_op_ball_fequal3
, dest_size
, srcs
); break;
1765 case 4: emit(nir_op_ball_fequal4
, dest_size
, srcs
); break;
1767 unreachable("not reached");
1770 switch (ir
->operands
[0]->type
->vector_elements
) {
1771 case 1: emit(nir_op_ieq
, dest_size
, srcs
); break;
1772 case 2: emit(nir_op_ball_iequal2
, dest_size
, srcs
); break;
1773 case 3: emit(nir_op_ball_iequal3
, dest_size
, srcs
); break;
1774 case 4: emit(nir_op_ball_iequal4
, dest_size
, srcs
); break;
1776 unreachable("not reached");
1780 switch (ir
->operands
[0]->type
->vector_elements
) {
1781 case 1: emit(nir_op_seq
, dest_size
, srcs
); break;
1782 case 2: emit(nir_op_fall_equal2
, dest_size
, srcs
); break;
1783 case 3: emit(nir_op_fall_equal3
, dest_size
, srcs
); break;
1784 case 4: emit(nir_op_fall_equal4
, dest_size
, srcs
); break;
1786 unreachable("not reached");
1790 case ir_binop_any_nequal
:
1791 if (supports_ints
) {
1792 if (types
[0] == GLSL_TYPE_FLOAT
) {
1793 switch (ir
->operands
[0]->type
->vector_elements
) {
1794 case 1: emit(nir_op_fne
, dest_size
, srcs
); break;
1795 case 2: emit(nir_op_bany_fnequal2
, dest_size
, srcs
); break;
1796 case 3: emit(nir_op_bany_fnequal3
, dest_size
, srcs
); break;
1797 case 4: emit(nir_op_bany_fnequal4
, dest_size
, srcs
); break;
1799 unreachable("not reached");
1802 switch (ir
->operands
[0]->type
->vector_elements
) {
1803 case 1: emit(nir_op_ine
, dest_size
, srcs
); break;
1804 case 2: emit(nir_op_bany_inequal2
, dest_size
, srcs
); break;
1805 case 3: emit(nir_op_bany_inequal3
, dest_size
, srcs
); break;
1806 case 4: emit(nir_op_bany_inequal4
, dest_size
, srcs
); break;
1808 unreachable("not reached");
1812 switch (ir
->operands
[0]->type
->vector_elements
) {
1813 case 1: emit(nir_op_sne
, dest_size
, srcs
); break;
1814 case 2: emit(nir_op_fany_nequal2
, dest_size
, srcs
); break;
1815 case 3: emit(nir_op_fany_nequal3
, dest_size
, srcs
); break;
1816 case 4: emit(nir_op_fany_nequal4
, dest_size
, srcs
); break;
1818 unreachable("not reached");
1823 switch (ir
->operands
[0]->type
->vector_elements
) {
1824 case 2: emit(nir_op_fdot2
, dest_size
, srcs
); break;
1825 case 3: emit(nir_op_fdot3
, dest_size
, srcs
); break;
1826 case 4: emit(nir_op_fdot4
, dest_size
, srcs
); break;
1828 unreachable("not reached");
1832 case ir_binop_pack_half_2x16_split
:
1833 emit(nir_op_pack_half_2x16_split
, dest_size
, srcs
);
1835 case ir_binop_bfm
: emit(nir_op_bfm
, dest_size
, srcs
); break;
1836 case ir_binop_ldexp
: emit(nir_op_ldexp
, dest_size
, srcs
); break;
1837 case ir_triop_fma
: emit(nir_op_ffma
, dest_size
, srcs
); break;
1839 instr
= emit(nir_op_flrp
, dest_size
, srcs
);
1840 if (ir
->operands
[0]->type
->vector_elements
!= 1 &&
1841 ir
->operands
[2]->type
->vector_elements
== 1) {
1842 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
;
1844 instr
->src
[2].swizzle
[i
] = 0;
1850 emit(nir_op_bcsel
, dest_size
, srcs
);
1852 emit(nir_op_fcsel
, dest_size
, srcs
);
1855 instr
= emit(nir_op_bfi
, dest_size
, srcs
);
1856 for (unsigned i
= 0; i
< ir
->operands
[1]->type
->vector_elements
; i
++) {
1857 instr
->src
[0].swizzle
[i
] = 0;
1860 case ir_triop_bitfield_extract
:
1861 instr
= emit(out_type
== GLSL_TYPE_INT
? nir_op_ibitfield_extract
:
1862 nir_op_ubitfield_extract
, dest_size
, srcs
);
1863 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1864 instr
->src
[1].swizzle
[i
] = 0;
1865 instr
->src
[2].swizzle
[i
] = 0;
1868 case ir_quadop_bitfield_insert
:
1869 instr
= emit(nir_op_bitfield_insert
, dest_size
, srcs
);
1870 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1871 instr
->src
[2].swizzle
[i
] = 0;
1872 instr
->src
[3].swizzle
[i
] = 0;
1875 case ir_quadop_vector
:
1876 switch (ir
->type
->vector_elements
) {
1877 case 2: emit(nir_op_vec2
, dest_size
, srcs
); break;
1878 case 3: emit(nir_op_vec3
, dest_size
, srcs
); break;
1879 case 4: emit(nir_op_vec4
, dest_size
, srcs
); break;
1880 default: unreachable("not reached");
1885 unreachable("not reached");
1890 nir_visitor::visit(ir_swizzle
*ir
)
1892 nir_alu_instr
*instr
= emit(supports_ints
? nir_op_imov
: nir_op_fmov
,
1893 ir
->type
->vector_elements
,
1894 evaluate_rvalue(ir
->val
));
1896 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1897 for (unsigned i
= 0; i
< ir
->type
->vector_elements
; i
++)
1898 instr
->src
[0].swizzle
[i
] = swizzle
[i
];
1902 nir_visitor::visit(ir_texture
*ir
)
1909 num_srcs
= 1; /* coordinate */
1914 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1915 num_srcs
= 2; /* coordinate, bias/lod */
1919 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1925 if (ir
->lod_info
.lod
!= NULL
)
1926 num_srcs
= 2; /* coordinate, lod */
1928 num_srcs
= 1; /* coordinate */
1932 op
= nir_texop_txf_ms
;
1933 num_srcs
= 2; /* coordinate, sample_index */
1938 if (ir
->lod_info
.lod
!= NULL
)
1939 num_srcs
= 1; /* lod */
1946 num_srcs
= 1; /* coordinate */
1951 num_srcs
= 1; /* coordinate */
1954 case ir_query_levels
:
1955 op
= nir_texop_query_levels
;
1959 case ir_texture_samples
:
1960 op
= nir_texop_texture_samples
;
1965 unreachable("not reached");
1968 if (ir
->projector
!= NULL
)
1970 if (ir
->shadow_comparitor
!= NULL
)
1972 if (ir
->offset
!= NULL
&& ir
->offset
->as_constant() == NULL
)
1975 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
1978 instr
->sampler_dim
=
1979 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
1980 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
1981 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
1982 if (instr
->is_shadow
)
1983 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
1984 switch (ir
->type
->base_type
) {
1985 case GLSL_TYPE_FLOAT
:
1986 instr
->dest_type
= nir_type_float
;
1989 instr
->dest_type
= nir_type_int
;
1991 case GLSL_TYPE_UINT
:
1992 instr
->dest_type
= nir_type_unsigned
;
1995 unreachable("not reached");
1998 instr
->sampler
= evaluate_deref(&instr
->instr
, ir
->sampler
);
2000 unsigned src_number
= 0;
2002 if (ir
->coordinate
!= NULL
) {
2003 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
2004 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->coordinate
);
2005 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2009 if (ir
->projector
!= NULL
) {
2010 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->projector
);
2011 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2015 if (ir
->shadow_comparitor
!= NULL
) {
2016 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->shadow_comparitor
);
2017 instr
->src
[src_number
].src_type
= nir_tex_src_comparitor
;
2021 if (ir
->offset
!= NULL
) {
2022 /* we don't support multiple offsets yet */
2023 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2025 ir_constant
*const_offset
= ir
->offset
->as_constant();
2026 if (const_offset
!= NULL
) {
2027 for (unsigned i
= 0; i
< const_offset
->type
->vector_elements
; i
++)
2028 instr
->const_offset
[i
] = const_offset
->value
.i
[i
];
2030 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->offset
);
2031 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2038 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.bias
);
2039 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2046 if (ir
->lod_info
.lod
!= NULL
) {
2047 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.lod
);
2048 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2054 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.grad
.dPdx
);
2055 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2057 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.grad
.dPdy
);
2058 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2063 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.sample_index
);
2064 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2069 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2076 assert(src_number
== num_srcs
);
2078 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
));
2082 nir_visitor::visit(ir_constant
*ir
)
2085 * We don't know if this variable is an an array or struct that gets
2086 * dereferenced, so do the safe thing an make it a variable with a
2087 * constant initializer and return a dereference.
2091 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2092 var
->data
.read_only
= true;
2093 var
->constant_initializer
= constant_copy(ir
, var
);
2095 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2096 this->deref_tail
= &this->deref_head
->deref
;
2100 nir_visitor::visit(ir_dereference_variable
*ir
)
2102 struct hash_entry
*entry
=
2103 _mesa_hash_table_search(this->var_table
, ir
->var
);
2105 nir_variable
*var
= (nir_variable
*) entry
->data
;
2107 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2108 this->deref_head
= deref
;
2109 this->deref_tail
= &deref
->deref
;
2113 nir_visitor::visit(ir_dereference_record
*ir
)
2115 ir
->record
->accept(this);
2117 int field_index
= this->deref_tail
->type
->field_index(ir
->field
);
2118 assert(field_index
>= 0);
2120 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2121 deref
->deref
.type
= ir
->type
;
2122 this->deref_tail
->child
= &deref
->deref
;
2123 this->deref_tail
= &deref
->deref
;
2127 nir_visitor::visit(ir_dereference_array
*ir
)
2129 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2130 deref
->deref
.type
= ir
->type
;
2132 ir_constant
*const_index
= ir
->array_index
->as_constant();
2133 if (const_index
!= NULL
) {
2134 deref
->deref_array_type
= nir_deref_array_type_direct
;
2135 deref
->base_offset
= const_index
->value
.u
[0];
2137 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2138 deref
->indirect
= evaluate_rvalue(ir
->array_index
);
2141 ir
->array
->accept(this);
2143 this->deref_tail
->child
= &deref
->deref
;
2144 ralloc_steal(this->deref_tail
, deref
);
2145 this->deref_tail
= &deref
->deref
;
2149 nir_visitor::visit(ir_barrier
*ir
)
2151 nir_intrinsic_instr
*instr
=
2152 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2153 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);