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_out
= sh
->Geom
.VerticesOut
;
174 shader
->info
.gs
.invocations
= sh
->Geom
.Invocations
;
177 case MESA_SHADER_FRAGMENT
: {
178 struct gl_fragment_program
*fp
=
179 (struct gl_fragment_program
*)sh
->Program
;
181 shader
->info
.fs
.uses_discard
= fp
->UsesKill
;
182 shader
->info
.fs
.early_fragment_tests
= sh
->EarlyFragmentTests
;
183 shader
->info
.fs
.depth_layout
= fp
->FragDepthLayout
;
187 case MESA_SHADER_COMPUTE
: {
188 struct gl_compute_program
*cp
= (struct gl_compute_program
*)sh
->Program
;
189 shader
->info
.cs
.local_size
[0] = cp
->LocalSize
[0];
190 shader
->info
.cs
.local_size
[1] = cp
->LocalSize
[1];
191 shader
->info
.cs
.local_size
[2] = cp
->LocalSize
[2];
196 break; /* No stage-specific info */
202 nir_visitor::nir_visitor(nir_shader
*shader
)
204 this->supports_ints
= shader
->options
->native_integers
;
205 this->shader
= shader
;
206 this->is_global
= true;
207 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
208 _mesa_key_pointer_equal
);
209 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
210 _mesa_key_pointer_equal
);
213 nir_visitor::~nir_visitor()
215 _mesa_hash_table_destroy(this->var_table
, NULL
);
216 _mesa_hash_table_destroy(this->overload_table
, NULL
);
220 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
223 ralloc_steal(mem_ctx
, this->deref_head
);
224 return this->deref_head
;
227 static nir_constant
*
228 constant_copy(ir_constant
*ir
, void *mem_ctx
)
233 nir_constant
*ret
= ralloc(mem_ctx
, nir_constant
);
235 unsigned total_elems
= ir
->type
->components();
237 switch (ir
->type
->base_type
) {
239 for (i
= 0; i
< total_elems
; i
++)
240 ret
->value
.u
[i
] = ir
->value
.u
[i
];
244 for (i
= 0; i
< total_elems
; i
++)
245 ret
->value
.i
[i
] = ir
->value
.i
[i
];
248 case GLSL_TYPE_FLOAT
:
249 for (i
= 0; i
< total_elems
; i
++)
250 ret
->value
.f
[i
] = ir
->value
.f
[i
];
254 for (i
= 0; i
< total_elems
; i
++)
255 ret
->value
.b
[i
] = ir
->value
.b
[i
];
258 case GLSL_TYPE_STRUCT
:
259 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
262 foreach_in_list(ir_constant
, field
, &ir
->components
) {
263 ret
->elements
[i
] = constant_copy(field
, mem_ctx
);
268 case GLSL_TYPE_ARRAY
:
269 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
272 for (i
= 0; i
< ir
->type
->length
; i
++)
273 ret
->elements
[i
] = constant_copy(ir
->array_elements
[i
], mem_ctx
);
277 unreachable("not reached");
284 nir_visitor::visit(ir_variable
*ir
)
286 nir_variable
*var
= ralloc(shader
, nir_variable
);
287 var
->type
= ir
->type
;
288 var
->name
= ralloc_strdup(var
, ir
->name
);
290 if (ir
->is_interface_instance() && ir
->get_max_ifc_array_access() != NULL
) {
291 unsigned size
= ir
->get_interface_type()->length
;
292 var
->max_ifc_array_access
= ralloc_array(var
, unsigned, size
);
293 memcpy(var
->max_ifc_array_access
, ir
->get_max_ifc_array_access(),
294 size
* sizeof(unsigned));
296 var
->max_ifc_array_access
= NULL
;
299 var
->data
.read_only
= ir
->data
.read_only
;
300 var
->data
.centroid
= ir
->data
.centroid
;
301 var
->data
.sample
= ir
->data
.sample
;
302 var
->data
.invariant
= ir
->data
.invariant
;
303 var
->data
.location
= ir
->data
.location
;
305 switch(ir
->data
.mode
) {
307 case ir_var_temporary
:
309 var
->data
.mode
= nir_var_global
;
311 var
->data
.mode
= nir_var_local
;
314 case ir_var_function_in
:
315 case ir_var_function_out
:
316 case ir_var_function_inout
:
317 case ir_var_const_in
:
318 var
->data
.mode
= nir_var_local
;
321 case ir_var_shader_in
:
322 if (shader
->stage
== MESA_SHADER_FRAGMENT
&&
323 ir
->data
.location
== VARYING_SLOT_FACE
) {
324 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
325 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
326 var
->data
.mode
= nir_var_system_value
;
327 } else if (shader
->stage
== MESA_SHADER_GEOMETRY
&&
328 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
329 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
330 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
331 var
->data
.mode
= nir_var_system_value
;
333 var
->data
.mode
= nir_var_shader_in
;
337 case ir_var_shader_out
:
338 var
->data
.mode
= nir_var_shader_out
;
342 var
->data
.mode
= nir_var_uniform
;
345 case ir_var_shader_storage
:
346 var
->data
.mode
= nir_var_shader_storage
;
349 case ir_var_system_value
:
350 var
->data
.mode
= nir_var_system_value
;
354 unreachable("not reached");
357 var
->data
.interpolation
= ir
->data
.interpolation
;
358 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
359 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
360 var
->data
.explicit_location
= ir
->data
.explicit_location
;
361 var
->data
.explicit_index
= ir
->data
.explicit_index
;
362 var
->data
.explicit_binding
= ir
->data
.explicit_binding
;
363 var
->data
.has_initializer
= ir
->data
.has_initializer
;
364 var
->data
.is_unmatched_generic_inout
= ir
->data
.is_unmatched_generic_inout
;
365 var
->data
.location_frac
= ir
->data
.location_frac
;
366 var
->data
.from_named_ifc_block_array
= ir
->data
.from_named_ifc_block_array
;
367 var
->data
.from_named_ifc_block_nonarray
= ir
->data
.from_named_ifc_block_nonarray
;
369 switch (ir
->data
.depth_layout
) {
370 case ir_depth_layout_none
:
371 var
->data
.depth_layout
= nir_depth_layout_none
;
373 case ir_depth_layout_any
:
374 var
->data
.depth_layout
= nir_depth_layout_any
;
376 case ir_depth_layout_greater
:
377 var
->data
.depth_layout
= nir_depth_layout_greater
;
379 case ir_depth_layout_less
:
380 var
->data
.depth_layout
= nir_depth_layout_less
;
382 case ir_depth_layout_unchanged
:
383 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
386 unreachable("not reached");
389 var
->data
.index
= ir
->data
.index
;
390 var
->data
.binding
= ir
->data
.binding
;
391 /* XXX Get rid of buffer_index */
392 var
->data
.atomic
.buffer_index
= ir
->data
.binding
;
393 var
->data
.atomic
.offset
= ir
->data
.atomic
.offset
;
394 var
->data
.image
.read_only
= ir
->data
.image_read_only
;
395 var
->data
.image
.write_only
= ir
->data
.image_write_only
;
396 var
->data
.image
.coherent
= ir
->data
.image_coherent
;
397 var
->data
.image
._volatile
= ir
->data
.image_volatile
;
398 var
->data
.image
.restrict_flag
= ir
->data
.image_restrict
;
399 var
->data
.image
.format
= ir
->data
.image_format
;
400 var
->data
.max_array_access
= ir
->data
.max_array_access
;
402 var
->num_state_slots
= ir
->get_num_state_slots();
403 if (var
->num_state_slots
> 0) {
404 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
405 var
->num_state_slots
);
407 ir_state_slot
*state_slots
= ir
->get_state_slots();
408 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
409 for (unsigned j
= 0; j
< 5; j
++)
410 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
411 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
414 var
->state_slots
= NULL
;
417 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
419 var
->interface_type
= ir
->get_interface_type();
421 if (var
->data
.mode
== nir_var_local
)
422 nir_function_impl_add_variable(impl
, var
);
424 nir_shader_add_variable(shader
, var
);
426 _mesa_hash_table_insert(var_table
, ir
, var
);
431 nir_function_visitor::visit_enter(ir_function
*ir
)
433 visitor
->create_function(ir
);
434 return visit_continue_with_parent
;
439 nir_visitor::create_function(ir_function
*ir
)
441 nir_function
*func
= nir_function_create(this->shader
, ir
->name
);
442 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
443 create_overload(sig
, func
);
450 nir_visitor::create_overload(ir_function_signature
*ir
, nir_function
*function
)
452 if (ir
->is_intrinsic
)
455 nir_function_overload
*overload
= nir_function_overload_create(function
);
457 unsigned num_params
= ir
->parameters
.length();
458 overload
->num_params
= num_params
;
459 overload
->params
= ralloc_array(shader
, nir_parameter
, num_params
);
462 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
463 switch (param
->data
.mode
) {
464 case ir_var_function_in
:
465 overload
->params
[i
].param_type
= nir_parameter_in
;
468 case ir_var_function_out
:
469 overload
->params
[i
].param_type
= nir_parameter_out
;
472 case ir_var_function_inout
:
473 overload
->params
[i
].param_type
= nir_parameter_inout
;
477 unreachable("not reached");
480 overload
->params
[i
].type
= param
->type
;
484 overload
->return_type
= ir
->return_type
;
486 _mesa_hash_table_insert(this->overload_table
, ir
, overload
);
490 nir_visitor::visit(ir_function
*ir
)
492 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
497 nir_visitor::visit(ir_function_signature
*ir
)
499 if (ir
->is_intrinsic
)
502 struct hash_entry
*entry
=
503 _mesa_hash_table_search(this->overload_table
, ir
);
506 nir_function_overload
*overload
= (nir_function_overload
*) entry
->data
;
508 if (ir
->is_defined
) {
509 nir_function_impl
*impl
= nir_function_impl_create(overload
);
512 unsigned num_params
= overload
->num_params
;
513 impl
->num_params
= num_params
;
514 impl
->params
= ralloc_array(this->shader
, nir_variable
*, num_params
);
516 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
518 impl
->params
[i
] = this->var
;
522 if (overload
->return_type
== glsl_type::void_type
) {
523 impl
->return_var
= NULL
;
525 impl
->return_var
= ralloc(this->shader
, nir_variable
);
526 impl
->return_var
->name
= ralloc_strdup(impl
->return_var
,
528 impl
->return_var
->type
= overload
->return_type
;
531 this->is_global
= false;
533 this->cf_node_list
= &impl
->body
;
534 visit_exec_list(&ir
->body
, this);
536 this->is_global
= true;
538 overload
->impl
= NULL
;
543 nir_visitor::visit(ir_loop
*ir
)
545 exec_list
*old_list
= this->cf_node_list
;
547 nir_loop
*loop
= nir_loop_create(this->shader
);
548 nir_cf_node_insert_end(old_list
, &loop
->cf_node
);
549 this->cf_node_list
= &loop
->body
;
550 visit_exec_list(&ir
->body_instructions
, this);
552 this->cf_node_list
= old_list
;
556 nir_visitor::visit(ir_if
*ir
)
558 nir_src condition
= evaluate_rvalue(ir
->condition
);
560 exec_list
*old_list
= this->cf_node_list
;
562 nir_if
*if_stmt
= nir_if_create(this->shader
);
563 if_stmt
->condition
= condition
;
564 nir_cf_node_insert_end(old_list
, &if_stmt
->cf_node
);
566 this->cf_node_list
= &if_stmt
->then_list
;
567 visit_exec_list(&ir
->then_instructions
, this);
569 this->cf_node_list
= &if_stmt
->else_list
;
570 visit_exec_list(&ir
->else_instructions
, this);
572 this->cf_node_list
= old_list
;
576 nir_visitor::visit(ir_discard
*ir
)
579 * discards aren't treated as control flow, because before we lower them
580 * they can appear anywhere in the shader and the stuff after them may still
581 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
582 * discards will be immediately followed by a return.
585 nir_intrinsic_instr
*discard
;
587 discard
= nir_intrinsic_instr_create(this->shader
,
588 nir_intrinsic_discard_if
);
589 discard
->src
[0] = evaluate_rvalue(ir
->condition
);
591 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
593 nir_instr_insert_after_cf_list(this->cf_node_list
, &discard
->instr
);
597 nir_visitor::visit(ir_emit_vertex
*ir
)
599 nir_intrinsic_instr
*instr
=
600 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
601 instr
->const_index
[0] = ir
->stream_id();
602 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
606 nir_visitor::visit(ir_end_primitive
*ir
)
608 nir_intrinsic_instr
*instr
=
609 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
610 instr
->const_index
[0] = ir
->stream_id();
611 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
615 nir_visitor::visit(ir_loop_jump
*ir
)
619 case ir_loop_jump::jump_break
:
620 type
= nir_jump_break
;
622 case ir_loop_jump::jump_continue
:
623 type
= nir_jump_continue
;
626 unreachable("not reached");
629 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
630 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
634 nir_visitor::visit(ir_return
*ir
)
636 if (ir
->value
!= NULL
) {
637 nir_intrinsic_instr
*copy
=
638 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
640 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
641 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
644 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
645 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
649 nir_visitor::visit(ir_call
*ir
)
651 if (ir
->callee
->is_intrinsic
) {
653 if (strcmp(ir
->callee_name(), "__intrinsic_atomic_read") == 0) {
654 op
= nir_intrinsic_atomic_counter_read_var
;
655 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_increment") == 0) {
656 op
= nir_intrinsic_atomic_counter_inc_var
;
657 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_predecrement") == 0) {
658 op
= nir_intrinsic_atomic_counter_dec_var
;
659 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_load") == 0) {
660 op
= nir_intrinsic_image_load
;
661 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_store") == 0) {
662 op
= nir_intrinsic_image_store
;
663 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_add") == 0) {
664 op
= nir_intrinsic_image_atomic_add
;
665 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_min") == 0) {
666 op
= nir_intrinsic_image_atomic_min
;
667 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_max") == 0) {
668 op
= nir_intrinsic_image_atomic_max
;
669 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_and") == 0) {
670 op
= nir_intrinsic_image_atomic_and
;
671 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_or") == 0) {
672 op
= nir_intrinsic_image_atomic_or
;
673 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_xor") == 0) {
674 op
= nir_intrinsic_image_atomic_xor
;
675 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_exchange") == 0) {
676 op
= nir_intrinsic_image_atomic_exchange
;
677 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_comp_swap") == 0) {
678 op
= nir_intrinsic_image_atomic_comp_swap
;
679 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier") == 0) {
680 op
= nir_intrinsic_memory_barrier
;
681 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_size") == 0) {
682 op
= nir_intrinsic_image_size
;
683 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_samples") == 0) {
684 op
= nir_intrinsic_image_samples
;
685 } else if (strcmp(ir
->callee_name(), "__intrinsic_store_ssbo") == 0) {
686 op
= nir_intrinsic_store_ssbo
;
687 } else if (strcmp(ir
->callee_name(), "__intrinsic_load_ssbo") == 0) {
688 op
= nir_intrinsic_load_ssbo
;
689 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_add_internal") == 0) {
690 op
= nir_intrinsic_ssbo_atomic_add
;
691 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_and_internal") == 0) {
692 op
= nir_intrinsic_ssbo_atomic_and
;
693 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_or_internal") == 0) {
694 op
= nir_intrinsic_ssbo_atomic_or
;
695 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_xor_internal") == 0) {
696 op
= nir_intrinsic_ssbo_atomic_xor
;
697 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_min_internal") == 0) {
698 assert(ir
->return_deref
);
699 if (ir
->return_deref
->type
== glsl_type::int_type
)
700 op
= nir_intrinsic_ssbo_atomic_imin
;
701 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
702 op
= nir_intrinsic_ssbo_atomic_umin
;
704 unreachable("Invalid type");
705 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_max_internal") == 0) {
706 assert(ir
->return_deref
);
707 if (ir
->return_deref
->type
== glsl_type::int_type
)
708 op
= nir_intrinsic_ssbo_atomic_imax
;
709 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
710 op
= nir_intrinsic_ssbo_atomic_umax
;
712 unreachable("Invalid type");
713 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_exchange_internal") == 0) {
714 op
= nir_intrinsic_ssbo_atomic_exchange
;
715 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_comp_swap_internal") == 0) {
716 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
718 unreachable("not reached");
721 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
722 nir_dest
*dest
= &instr
->dest
;
725 case nir_intrinsic_atomic_counter_read_var
:
726 case nir_intrinsic_atomic_counter_inc_var
:
727 case nir_intrinsic_atomic_counter_dec_var
: {
728 ir_dereference
*param
=
729 (ir_dereference
*) ir
->actual_parameters
.get_head();
730 instr
->variables
[0] = evaluate_deref(&instr
->instr
, param
);
731 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, NULL
);
732 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
735 case nir_intrinsic_image_load
:
736 case nir_intrinsic_image_store
:
737 case nir_intrinsic_image_atomic_add
:
738 case nir_intrinsic_image_atomic_min
:
739 case nir_intrinsic_image_atomic_max
:
740 case nir_intrinsic_image_atomic_and
:
741 case nir_intrinsic_image_atomic_or
:
742 case nir_intrinsic_image_atomic_xor
:
743 case nir_intrinsic_image_atomic_exchange
:
744 case nir_intrinsic_image_atomic_comp_swap
:
745 case nir_intrinsic_image_samples
:
746 case nir_intrinsic_image_size
: {
747 nir_ssa_undef_instr
*instr_undef
=
748 nir_ssa_undef_instr_create(shader
, 1);
749 nir_instr_insert_after_cf_list(this->cf_node_list
,
750 &instr_undef
->instr
);
752 /* Set the image variable dereference. */
753 exec_node
*param
= ir
->actual_parameters
.get_head();
754 ir_dereference
*image
= (ir_dereference
*)param
;
755 const glsl_type
*type
=
756 image
->variable_referenced()->type
->without_array();
758 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
759 param
= param
->get_next();
761 /* Set the intrinsic destination. */
762 if (ir
->return_deref
) {
763 const nir_intrinsic_info
*info
=
764 &nir_intrinsic_infos
[instr
->intrinsic
];
765 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
766 info
->dest_components
, NULL
);
769 if (op
== nir_intrinsic_image_size
||
770 op
== nir_intrinsic_image_samples
) {
771 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
775 /* Set the address argument, extending the coordinate vector to four
778 const nir_src src_addr
= evaluate_rvalue((ir_dereference
*)param
);
779 nir_alu_instr
*instr_addr
= nir_alu_instr_create(shader
, nir_op_vec4
);
780 nir_ssa_dest_init(&instr_addr
->instr
, &instr_addr
->dest
.dest
, 4, NULL
);
782 for (int i
= 0; i
< 4; i
++) {
783 if (i
< type
->coordinate_components()) {
784 instr_addr
->src
[i
].src
= src_addr
;
785 instr_addr
->src
[i
].swizzle
[0] = i
;
787 instr_addr
->src
[i
].src
= nir_src_for_ssa(&instr_undef
->def
);
791 nir_instr_insert_after_cf_list(cf_node_list
, &instr_addr
->instr
);
792 instr
->src
[0] = nir_src_for_ssa(&instr_addr
->dest
.dest
.ssa
);
793 param
= param
->get_next();
795 /* Set the sample argument, which is undefined for single-sample
798 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
799 instr
->src
[1] = evaluate_rvalue((ir_dereference
*)param
);
800 param
= param
->get_next();
802 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
805 /* Set the intrinsic parameters. */
806 if (!param
->is_tail_sentinel()) {
807 instr
->src
[2] = evaluate_rvalue((ir_dereference
*)param
);
808 param
= param
->get_next();
811 if (!param
->is_tail_sentinel()) {
812 instr
->src
[3] = evaluate_rvalue((ir_dereference
*)param
);
813 param
= param
->get_next();
815 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
818 case nir_intrinsic_memory_barrier
:
819 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
821 case nir_intrinsic_store_ssbo
: {
822 exec_node
*param
= ir
->actual_parameters
.get_head();
823 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
825 param
= param
->get_next();
826 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
828 param
= param
->get_next();
829 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
831 param
= param
->get_next();
832 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
835 /* Check if we need the indirect version */
836 ir_constant
*const_offset
= offset
->as_constant();
838 op
= nir_intrinsic_store_ssbo_indirect
;
840 instr
= nir_intrinsic_instr_create(shader
, op
);
841 instr
->src
[2] = evaluate_rvalue(offset
);
842 instr
->const_index
[0] = 0;
844 instr
->const_index
[0] = const_offset
->value
.u
[0];
847 instr
->const_index
[1] = write_mask
->value
.u
[0];
849 instr
->src
[0] = evaluate_rvalue(val
);
850 instr
->num_components
= val
->type
->vector_elements
;
852 instr
->src
[1] = evaluate_rvalue(block
);
853 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
856 case nir_intrinsic_load_ssbo
: {
857 exec_node
*param
= ir
->actual_parameters
.get_head();
858 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
860 param
= param
->get_next();
861 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
863 /* Check if we need the indirect version */
864 ir_constant
*const_offset
= offset
->as_constant();
866 op
= nir_intrinsic_load_ssbo_indirect
;
868 instr
= nir_intrinsic_instr_create(shader
, op
);
869 instr
->src
[1] = evaluate_rvalue(offset
);
870 instr
->const_index
[0] = 0;
873 instr
->const_index
[0] = const_offset
->value
.u
[0];
876 instr
->src
[0] = evaluate_rvalue(block
);
878 const glsl_type
*type
= ir
->return_deref
->var
->type
;
879 instr
->num_components
= type
->vector_elements
;
881 /* Setup destination register */
882 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
883 type
->vector_elements
, NULL
);
885 /* Insert the created nir instruction now since in the case of boolean
886 * result we will need to emit another instruction after it
888 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
891 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
892 * consider a true boolean to be ~0. Fix this up with a != 0
895 if (type
->base_type
== GLSL_TYPE_BOOL
) {
896 nir_load_const_instr
*const_zero
=
897 nir_load_const_instr_create(shader
, 1);
898 const_zero
->value
.u
[0] = 0;
899 nir_instr_insert_after_cf_list(this->cf_node_list
,
902 nir_alu_instr
*load_ssbo_compare
=
903 nir_alu_instr_create(shader
, nir_op_ine
);
904 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
905 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
906 load_ssbo_compare
->src
[1].src
.is_ssa
= true;
907 load_ssbo_compare
->src
[1].src
.ssa
= &const_zero
->def
;
908 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
909 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
910 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
911 &load_ssbo_compare
->dest
.dest
,
912 type
->vector_elements
, NULL
);
913 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
914 nir_instr_insert_after_cf_list(this->cf_node_list
,
915 &load_ssbo_compare
->instr
);
916 dest
= &load_ssbo_compare
->dest
.dest
;
920 case nir_intrinsic_ssbo_atomic_add
:
921 case nir_intrinsic_ssbo_atomic_imin
:
922 case nir_intrinsic_ssbo_atomic_umin
:
923 case nir_intrinsic_ssbo_atomic_imax
:
924 case nir_intrinsic_ssbo_atomic_umax
:
925 case nir_intrinsic_ssbo_atomic_and
:
926 case nir_intrinsic_ssbo_atomic_or
:
927 case nir_intrinsic_ssbo_atomic_xor
:
928 case nir_intrinsic_ssbo_atomic_exchange
:
929 case nir_intrinsic_ssbo_atomic_comp_swap
: {
930 int param_count
= ir
->actual_parameters
.length();
931 assert(param_count
== 3 || param_count
== 4);
934 exec_node
*param
= ir
->actual_parameters
.get_head();
935 ir_instruction
*inst
= (ir_instruction
*) param
;
936 instr
->src
[0] = evaluate_rvalue(inst
->as_rvalue());
939 param
= param
->get_next();
940 inst
= (ir_instruction
*) param
;
941 instr
->src
[1] = evaluate_rvalue(inst
->as_rvalue());
943 /* data1 parameter (this is always present) */
944 param
= param
->get_next();
945 inst
= (ir_instruction
*) param
;
946 instr
->src
[2] = evaluate_rvalue(inst
->as_rvalue());
948 /* data2 parameter (only with atomic_comp_swap) */
949 if (param_count
== 4) {
950 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
951 param
= param
->get_next();
952 inst
= (ir_instruction
*) param
;
953 instr
->src
[3] = evaluate_rvalue(inst
->as_rvalue());
957 assert(ir
->return_deref
);
958 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
959 ir
->return_deref
->type
->vector_elements
, NULL
);
960 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
964 unreachable("not reached");
967 if (ir
->return_deref
) {
968 nir_intrinsic_instr
*store_instr
=
969 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
970 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
972 store_instr
->variables
[0] =
973 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
974 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
976 nir_instr_insert_after_cf_list(this->cf_node_list
,
977 &store_instr
->instr
);
983 struct hash_entry
*entry
=
984 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
986 nir_function_overload
*callee
= (nir_function_overload
*) entry
->data
;
988 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
991 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
992 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
996 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
997 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
1001 nir_visitor::visit(ir_assignment
*ir
)
1003 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1005 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1006 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1007 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1008 nir_intrinsic_instr
*copy
=
1009 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1011 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1012 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1014 if (ir
->condition
) {
1015 nir_if
*if_stmt
= nir_if_create(this->shader
);
1016 if_stmt
->condition
= evaluate_rvalue(ir
->condition
);
1017 nir_cf_node_insert_end(this->cf_node_list
, &if_stmt
->cf_node
);
1018 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, ©
->instr
);
1020 nir_instr_insert_after_cf_list(this->cf_node_list
, ©
->instr
);
1025 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1027 ir
->lhs
->accept(this);
1028 nir_deref_var
*lhs_deref
= this->deref_head
;
1029 nir_src src
= evaluate_rvalue(ir
->rhs
);
1031 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1033 * We have no good way to update only part of a variable, so just load
1034 * the LHS and do a vec operation to combine the old with the new, and
1036 * back into the LHS. Copy propagation should get rid of the mess.
1039 nir_intrinsic_instr
*load
=
1040 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1041 load
->num_components
= ir
->lhs
->type
->vector_elements
;
1042 nir_ssa_dest_init(&load
->instr
, &load
->dest
, num_components
, NULL
);
1043 load
->variables
[0] = lhs_deref
;
1044 ralloc_steal(load
, load
->variables
[0]);
1045 nir_instr_insert_after_cf_list(this->cf_node_list
, &load
->instr
);
1048 switch (ir
->lhs
->type
->vector_elements
) {
1049 case 1: vec_op
= nir_op_imov
; break;
1050 case 2: vec_op
= nir_op_vec2
; break;
1051 case 3: vec_op
= nir_op_vec3
; break;
1052 case 4: vec_op
= nir_op_vec4
; break;
1053 default: unreachable("Invalid number of components"); break;
1055 nir_alu_instr
*vec
= nir_alu_instr_create(this->shader
, vec_op
);
1056 nir_ssa_dest_init(&vec
->instr
, &vec
->dest
.dest
, num_components
, NULL
);
1057 vec
->dest
.write_mask
= (1 << num_components
) - 1;
1059 unsigned component
= 0;
1060 for (unsigned i
= 0; i
< ir
->lhs
->type
->vector_elements
; i
++) {
1061 if (ir
->write_mask
& (1 << i
)) {
1062 vec
->src
[i
].src
= src
;
1064 /* GLSL IR will give us the input to the write-masked assignment
1065 * in a single packed vector. So, for example, if the
1066 * writemask is xzw, then we have to swizzle x -> x, y -> z,
1067 * and z -> w and get the y component from the load.
1069 vec
->src
[i
].swizzle
[0] = component
++;
1071 vec
->src
[i
].src
.is_ssa
= true;
1072 vec
->src
[i
].src
.ssa
= &load
->dest
.ssa
;
1073 vec
->src
[i
].swizzle
[0] = i
;
1077 nir_instr_insert_after_cf_list(this->cf_node_list
, &vec
->instr
);
1080 src
.ssa
= &vec
->dest
.dest
.ssa
;
1083 nir_intrinsic_instr
*store
=
1084 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1085 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1086 nir_deref
*store_deref
= nir_copy_deref(store
, &lhs_deref
->deref
);
1087 store
->variables
[0] = nir_deref_as_var(store_deref
);
1088 store
->src
[0] = src
;
1090 if (ir
->condition
) {
1091 nir_if
*if_stmt
= nir_if_create(this->shader
);
1092 if_stmt
->condition
= evaluate_rvalue(ir
->condition
);
1093 nir_cf_node_insert_end(this->cf_node_list
, &if_stmt
->cf_node
);
1094 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, &store
->instr
);
1096 nir_instr_insert_after_cf_list(this->cf_node_list
, &store
->instr
);
1101 * Given an instruction, returns a pointer to its destination or NULL if there
1102 * is no destination.
1104 * Note that this only handles instructions we generate at this level.
1107 get_instr_dest(nir_instr
*instr
)
1109 nir_alu_instr
*alu_instr
;
1110 nir_intrinsic_instr
*intrinsic_instr
;
1111 nir_tex_instr
*tex_instr
;
1113 switch (instr
->type
) {
1114 case nir_instr_type_alu
:
1115 alu_instr
= nir_instr_as_alu(instr
);
1116 return &alu_instr
->dest
.dest
;
1118 case nir_instr_type_intrinsic
:
1119 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1120 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1121 return &intrinsic_instr
->dest
;
1125 case nir_instr_type_tex
:
1126 tex_instr
= nir_instr_as_tex(instr
);
1127 return &tex_instr
->dest
;
1130 unreachable("not reached");
1137 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
)
1139 nir_dest
*dest
= get_instr_dest(instr
);
1142 nir_ssa_dest_init(instr
, dest
, num_components
, NULL
);
1144 nir_instr_insert_after_cf_list(this->cf_node_list
, instr
);
1145 this->result
= instr
;
1149 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1152 if (ir
->as_dereference() || ir
->as_constant()) {
1154 * A dereference is being used on the right hand side, which means we
1155 * must emit a variable load.
1158 nir_intrinsic_instr
*load_instr
=
1159 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1160 load_instr
->num_components
= ir
->type
->vector_elements
;
1161 load_instr
->variables
[0] = this->deref_head
;
1162 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1163 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
);
1166 nir_dest
*dest
= get_instr_dest(this->result
);
1167 assert(dest
->is_ssa
);
1169 return nir_src_for_ssa(&dest
->ssa
);
1173 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src
*srcs
)
1175 nir_alu_instr
*instr
= nir_alu_instr_create(this->shader
, op
);
1176 for (unsigned i
= 0; i
< nir_op_infos
[op
].num_inputs
; i
++)
1177 instr
->src
[i
].src
= srcs
[i
];
1178 instr
->dest
.write_mask
= (1 << dest_size
) - 1;
1179 add_instr(&instr
->instr
, dest_size
);
1184 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src src1
)
1186 assert(nir_op_infos
[op
].num_inputs
== 1);
1187 return emit(op
, dest_size
, &src1
);
1191 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src src1
,
1194 assert(nir_op_infos
[op
].num_inputs
== 2);
1195 nir_src srcs
[] = { src1
, src2
};
1196 return emit(op
, dest_size
, srcs
);
1200 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src src1
,
1201 nir_src src2
, nir_src src3
)
1203 assert(nir_op_infos
[op
].num_inputs
== 3);
1204 nir_src srcs
[] = { src1
, src2
, src3
};
1205 return emit(op
, dest_size
, srcs
);
1209 nir_visitor::visit(ir_expression
*ir
)
1211 /* Some special cases */
1212 switch (ir
->operation
) {
1213 case ir_binop_ubo_load
: {
1214 ir_constant
*const_index
= ir
->operands
[1]->as_constant();
1216 nir_intrinsic_op op
;
1218 op
= nir_intrinsic_load_ubo
;
1220 op
= nir_intrinsic_load_ubo_indirect
;
1222 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(this->shader
, op
);
1223 load
->num_components
= ir
->type
->vector_elements
;
1224 load
->const_index
[0] = const_index
? const_index
->value
.u
[0] : 0; /* base offset */
1225 load
->src
[0] = evaluate_rvalue(ir
->operands
[0]);
1227 load
->src
[1] = evaluate_rvalue(ir
->operands
[1]);
1228 add_instr(&load
->instr
, ir
->type
->vector_elements
);
1231 * In UBO's, a true boolean value is any non-zero value, but we consider
1232 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1235 if (ir
->type
->base_type
== GLSL_TYPE_BOOL
) {
1236 nir_load_const_instr
*const_zero
= nir_load_const_instr_create(shader
, 1);
1237 const_zero
->value
.u
[0] = 0;
1238 nir_instr_insert_after_cf_list(this->cf_node_list
, &const_zero
->instr
);
1240 nir_alu_instr
*compare
= nir_alu_instr_create(shader
, nir_op_ine
);
1241 compare
->src
[0].src
.is_ssa
= true;
1242 compare
->src
[0].src
.ssa
= &load
->dest
.ssa
;
1243 compare
->src
[1].src
.is_ssa
= true;
1244 compare
->src
[1].src
.ssa
= &const_zero
->def
;
1245 for (unsigned i
= 0; i
< ir
->type
->vector_elements
; i
++)
1246 compare
->src
[1].swizzle
[i
] = 0;
1247 compare
->dest
.write_mask
= (1 << ir
->type
->vector_elements
) - 1;
1249 add_instr(&compare
->instr
, ir
->type
->vector_elements
);
1255 case ir_unop_interpolate_at_centroid
:
1256 case ir_binop_interpolate_at_offset
:
1257 case ir_binop_interpolate_at_sample
: {
1258 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1259 ir_swizzle
*swizzle
= NULL
;
1261 /* the api does not allow a swizzle here, but the varying packing code
1262 * may have pushed one into here.
1264 swizzle
= ir
->operands
[0]->as_swizzle();
1266 deref
= swizzle
->val
->as_dereference();
1270 deref
->accept(this);
1272 nir_intrinsic_op op
;
1273 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1274 switch (ir
->operation
) {
1275 case ir_unop_interpolate_at_centroid
:
1276 op
= nir_intrinsic_interp_var_at_centroid
;
1278 case ir_binop_interpolate_at_offset
:
1279 op
= nir_intrinsic_interp_var_at_offset
;
1281 case ir_binop_interpolate_at_sample
:
1282 op
= nir_intrinsic_interp_var_at_sample
;
1285 unreachable("Invalid interpolation intrinsic");
1288 /* This case can happen if the vertex shader does not write the
1289 * given varying. In this case, the linker will lower it to a
1290 * global variable. Since interpolating a variable makes no
1291 * sense, we'll just turn it into a load which will probably
1292 * eventually end up as an SSA definition.
1294 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1295 op
= nir_intrinsic_load_var
;
1298 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1299 intrin
->num_components
= deref
->type
->vector_elements
;
1300 intrin
->variables
[0] = this->deref_head
;
1301 ralloc_steal(intrin
, intrin
->variables
[0]);
1303 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1304 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1305 intrin
->src
[0] = evaluate_rvalue(ir
->operands
[1]);
1307 add_instr(&intrin
->instr
, deref
->type
->vector_elements
);
1310 nir_alu_instr
*mov
= nir_alu_instr_create(shader
, nir_op_imov
);
1311 mov
->dest
.write_mask
= (1 << swizzle
->type
->vector_elements
) - 1;
1312 mov
->src
[0].src
.is_ssa
= true;
1313 mov
->src
[0].src
.ssa
= &intrin
->dest
.ssa
;
1315 mov
->src
[0].swizzle
[0] = swizzle
->mask
.x
;
1316 mov
->src
[0].swizzle
[1] = swizzle
->mask
.y
;
1317 mov
->src
[0].swizzle
[2] = swizzle
->mask
.z
;
1318 mov
->src
[0].swizzle
[3] = swizzle
->mask
.w
;
1319 for (unsigned i
= deref
->type
->vector_elements
; i
< 4; i
++)
1320 mov
->src
[0].swizzle
[i
] = 0;
1322 add_instr(&mov
->instr
, swizzle
->type
->vector_elements
);
1333 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1334 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1336 glsl_base_type types
[4];
1337 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1339 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1341 types
[i
] = GLSL_TYPE_FLOAT
;
1343 glsl_base_type out_type
;
1345 out_type
= ir
->type
->base_type
;
1347 out_type
= GLSL_TYPE_FLOAT
;
1349 unsigned dest_size
= ir
->type
->vector_elements
;
1351 nir_alu_instr
*instr
;
1354 switch (ir
->operation
) {
1355 case ir_unop_bit_not
: emit(nir_op_inot
, dest_size
, srcs
); break;
1356 case ir_unop_logic_not
:
1357 emit(supports_ints
? nir_op_inot
: nir_op_fnot
, dest_size
, srcs
);
1360 instr
= emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fneg
: nir_op_ineg
,
1364 instr
= emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fabs
: nir_op_iabs
,
1367 case ir_unop_saturate
:
1368 assert(types
[0] == GLSL_TYPE_FLOAT
);
1369 instr
= emit(nir_op_fsat
, dest_size
, srcs
);
1372 emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fsign
: nir_op_isign
,
1375 case ir_unop_rcp
: emit(nir_op_frcp
, dest_size
, srcs
); break;
1376 case ir_unop_rsq
: emit(nir_op_frsq
, dest_size
, srcs
); break;
1377 case ir_unop_sqrt
: emit(nir_op_fsqrt
, dest_size
, srcs
); break;
1378 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1379 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1380 case ir_unop_exp2
: emit(nir_op_fexp2
, dest_size
, srcs
); break;
1381 case ir_unop_log2
: emit(nir_op_flog2
, dest_size
, srcs
); break;
1383 emit(supports_ints
? nir_op_i2f
: nir_op_fmov
, dest_size
, srcs
);
1386 emit(supports_ints
? nir_op_u2f
: nir_op_fmov
, dest_size
, srcs
);
1389 emit(supports_ints
? nir_op_b2f
: nir_op_fmov
, dest_size
, srcs
);
1391 case ir_unop_f2i
: emit(nir_op_f2i
, dest_size
, srcs
); break;
1392 case ir_unop_f2u
: emit(nir_op_f2u
, dest_size
, srcs
); break;
1393 case ir_unop_f2b
: emit(nir_op_f2b
, dest_size
, srcs
); break;
1394 case ir_unop_i2b
: emit(nir_op_i2b
, dest_size
, srcs
); break;
1395 case ir_unop_b2i
: emit(nir_op_b2i
, dest_size
, srcs
); break;
1398 case ir_unop_bitcast_i2f
:
1399 case ir_unop_bitcast_f2i
:
1400 case ir_unop_bitcast_u2f
:
1401 case ir_unop_bitcast_f2u
:
1402 case ir_unop_subroutine_to_int
:
1404 emit(nir_op_imov
, dest_size
, srcs
);
1407 switch (ir
->operands
[0]->type
->vector_elements
) {
1409 emit(supports_ints
? nir_op_bany2
: nir_op_fany2
,
1413 emit(supports_ints
? nir_op_bany3
: nir_op_fany3
,
1417 emit(supports_ints
? nir_op_bany4
: nir_op_fany4
,
1421 unreachable("not reached");
1424 case ir_unop_trunc
: emit(nir_op_ftrunc
, dest_size
, srcs
); break;
1425 case ir_unop_ceil
: emit(nir_op_fceil
, dest_size
, srcs
); break;
1426 case ir_unop_floor
: emit(nir_op_ffloor
, dest_size
, srcs
); break;
1427 case ir_unop_fract
: emit(nir_op_ffract
, dest_size
, srcs
); break;
1428 case ir_unop_round_even
: emit(nir_op_fround_even
, dest_size
, srcs
); break;
1429 case ir_unop_sin
: emit(nir_op_fsin
, dest_size
, srcs
); break;
1430 case ir_unop_cos
: emit(nir_op_fcos
, dest_size
, srcs
); break;
1431 case ir_unop_dFdx
: emit(nir_op_fddx
, dest_size
, srcs
); break;
1432 case ir_unop_dFdy
: emit(nir_op_fddy
, dest_size
, srcs
); break;
1433 case ir_unop_dFdx_fine
: emit(nir_op_fddx_fine
, dest_size
, srcs
); break;
1434 case ir_unop_dFdy_fine
: emit(nir_op_fddy_fine
, dest_size
, srcs
); break;
1435 case ir_unop_dFdx_coarse
: emit(nir_op_fddx_coarse
, dest_size
, srcs
); break;
1436 case ir_unop_dFdy_coarse
: emit(nir_op_fddy_coarse
, dest_size
, srcs
); break;
1437 case ir_unop_pack_snorm_2x16
:
1438 emit(nir_op_pack_snorm_2x16
, dest_size
, srcs
);
1440 case ir_unop_pack_snorm_4x8
:
1441 emit(nir_op_pack_snorm_4x8
, dest_size
, srcs
);
1443 case ir_unop_pack_unorm_2x16
:
1444 emit(nir_op_pack_unorm_2x16
, dest_size
, srcs
);
1446 case ir_unop_pack_unorm_4x8
:
1447 emit(nir_op_pack_unorm_4x8
, dest_size
, srcs
);
1449 case ir_unop_pack_half_2x16
:
1450 emit(nir_op_pack_half_2x16
, dest_size
, srcs
);
1452 case ir_unop_unpack_snorm_2x16
:
1453 emit(nir_op_unpack_snorm_2x16
, dest_size
, srcs
);
1455 case ir_unop_unpack_snorm_4x8
:
1456 emit(nir_op_unpack_snorm_4x8
, dest_size
, srcs
);
1458 case ir_unop_unpack_unorm_2x16
:
1459 emit(nir_op_unpack_unorm_2x16
, dest_size
, srcs
);
1461 case ir_unop_unpack_unorm_4x8
:
1462 emit(nir_op_unpack_unorm_4x8
, dest_size
, srcs
);
1464 case ir_unop_unpack_half_2x16
:
1465 emit(nir_op_unpack_half_2x16
, dest_size
, srcs
);
1467 case ir_unop_unpack_half_2x16_split_x
:
1468 emit(nir_op_unpack_half_2x16_split_x
, dest_size
, srcs
);
1470 case ir_unop_unpack_half_2x16_split_y
:
1471 emit(nir_op_unpack_half_2x16_split_y
, dest_size
, srcs
);
1473 case ir_unop_bitfield_reverse
:
1474 emit(nir_op_bitfield_reverse
, dest_size
, srcs
);
1476 case ir_unop_bit_count
:
1477 emit(nir_op_bit_count
, dest_size
, srcs
);
1479 case ir_unop_find_msb
:
1481 case GLSL_TYPE_UINT
:
1482 emit(nir_op_ufind_msb
, dest_size
, srcs
);
1485 emit(nir_op_ifind_msb
, dest_size
, srcs
);
1488 unreachable("Invalid type for findMSB()");
1491 case ir_unop_find_lsb
:
1492 emit(nir_op_find_lsb
, dest_size
, srcs
);
1496 switch (ir
->type
->vector_elements
) {
1498 switch (ir
->operands
[0]->type
->vector_elements
) {
1499 case 1: emit(nir_op_fnoise1_1
, dest_size
, srcs
); break;
1500 case 2: emit(nir_op_fnoise1_2
, dest_size
, srcs
); break;
1501 case 3: emit(nir_op_fnoise1_3
, dest_size
, srcs
); break;
1502 case 4: emit(nir_op_fnoise1_4
, dest_size
, srcs
); break;
1503 default: unreachable("not reached");
1507 switch (ir
->operands
[0]->type
->vector_elements
) {
1508 case 1: emit(nir_op_fnoise2_1
, dest_size
, srcs
); break;
1509 case 2: emit(nir_op_fnoise2_2
, dest_size
, srcs
); break;
1510 case 3: emit(nir_op_fnoise2_3
, dest_size
, srcs
); break;
1511 case 4: emit(nir_op_fnoise2_4
, dest_size
, srcs
); break;
1512 default: unreachable("not reached");
1516 switch (ir
->operands
[0]->type
->vector_elements
) {
1517 case 1: emit(nir_op_fnoise3_1
, dest_size
, srcs
); break;
1518 case 2: emit(nir_op_fnoise3_2
, dest_size
, srcs
); break;
1519 case 3: emit(nir_op_fnoise3_3
, dest_size
, srcs
); break;
1520 case 4: emit(nir_op_fnoise3_4
, dest_size
, srcs
); break;
1521 default: unreachable("not reached");
1525 switch (ir
->operands
[0]->type
->vector_elements
) {
1526 case 1: emit(nir_op_fnoise4_1
, dest_size
, srcs
); break;
1527 case 2: emit(nir_op_fnoise4_2
, dest_size
, srcs
); break;
1528 case 3: emit(nir_op_fnoise4_3
, dest_size
, srcs
); break;
1529 case 4: emit(nir_op_fnoise4_4
, dest_size
, srcs
); break;
1530 default: unreachable("not reached");
1534 unreachable("not reached");
1537 case ir_unop_get_buffer_size
: {
1538 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1540 nir_intrinsic_get_buffer_size
);
1541 load
->num_components
= ir
->type
->vector_elements
;
1542 load
->src
[0] = evaluate_rvalue(ir
->operands
[0]);
1543 add_instr(&load
->instr
, ir
->type
->vector_elements
);
1555 case ir_binop_bit_and
:
1556 case ir_binop_bit_or
:
1557 case ir_binop_bit_xor
:
1558 case ir_binop_logic_and
:
1559 case ir_binop_logic_or
:
1560 case ir_binop_logic_xor
:
1561 case ir_binop_lshift
:
1562 case ir_binop_rshift
:
1563 switch (ir
->operation
) {
1565 if (out_type
== GLSL_TYPE_FLOAT
)
1571 if (out_type
== GLSL_TYPE_FLOAT
)
1577 if (out_type
== GLSL_TYPE_FLOAT
)
1583 if (out_type
== GLSL_TYPE_FLOAT
)
1585 else if (out_type
== GLSL_TYPE_INT
)
1591 if (out_type
== GLSL_TYPE_FLOAT
)
1597 if (out_type
== GLSL_TYPE_FLOAT
)
1599 else if (out_type
== GLSL_TYPE_INT
)
1605 if (out_type
== GLSL_TYPE_FLOAT
)
1607 else if (out_type
== GLSL_TYPE_INT
)
1612 case ir_binop_bit_and
:
1615 case ir_binop_bit_or
:
1618 case ir_binop_bit_xor
:
1621 case ir_binop_logic_and
:
1627 case ir_binop_logic_or
:
1633 case ir_binop_logic_xor
:
1639 case ir_binop_lshift
:
1642 case ir_binop_rshift
:
1643 if (out_type
== GLSL_TYPE_INT
)
1653 unreachable("not reached");
1656 instr
= emit(op
, dest_size
, srcs
);
1658 if (ir
->operands
[0]->type
->vector_elements
!= 1 &&
1659 ir
->operands
[1]->type
->vector_elements
== 1) {
1660 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
;
1662 instr
->src
[1].swizzle
[i
] = 0;
1666 if (ir
->operands
[1]->type
->vector_elements
!= 1 &&
1667 ir
->operands
[0]->type
->vector_elements
== 1) {
1668 for (unsigned i
= 0; i
< ir
->operands
[1]->type
->vector_elements
;
1670 instr
->src
[0].swizzle
[i
] = 0;
1675 case ir_binop_imul_high
:
1676 emit(out_type
== GLSL_TYPE_UINT
? nir_op_umul_high
: nir_op_imul_high
,
1679 case ir_binop_carry
: emit(nir_op_uadd_carry
, dest_size
, srcs
); break;
1680 case ir_binop_borrow
: emit(nir_op_usub_borrow
, dest_size
, srcs
); break;
1682 if (supports_ints
) {
1683 if (types
[0] == GLSL_TYPE_FLOAT
)
1684 emit(nir_op_flt
, dest_size
, srcs
);
1685 else if (types
[0] == GLSL_TYPE_INT
)
1686 emit(nir_op_ilt
, dest_size
, srcs
);
1688 emit(nir_op_ult
, dest_size
, srcs
);
1690 emit(nir_op_slt
, dest_size
, srcs
);
1693 case ir_binop_greater
:
1694 if (supports_ints
) {
1695 if (types
[0] == GLSL_TYPE_FLOAT
)
1696 emit(nir_op_flt
, dest_size
, srcs
[1], srcs
[0]);
1697 else if (types
[0] == GLSL_TYPE_INT
)
1698 emit(nir_op_ilt
, dest_size
, srcs
[1], srcs
[0]);
1700 emit(nir_op_ult
, dest_size
, srcs
[1], srcs
[0]);
1702 emit(nir_op_slt
, dest_size
, srcs
[1], srcs
[0]);
1705 case ir_binop_lequal
:
1706 if (supports_ints
) {
1707 if (types
[0] == GLSL_TYPE_FLOAT
)
1708 emit(nir_op_fge
, dest_size
, srcs
[1], srcs
[0]);
1709 else if (types
[0] == GLSL_TYPE_INT
)
1710 emit(nir_op_ige
, dest_size
, srcs
[1], srcs
[0]);
1712 emit(nir_op_uge
, dest_size
, srcs
[1], srcs
[0]);
1714 emit(nir_op_slt
, dest_size
, srcs
[1], srcs
[0]);
1717 case ir_binop_gequal
:
1718 if (supports_ints
) {
1719 if (types
[0] == GLSL_TYPE_FLOAT
)
1720 emit(nir_op_fge
, dest_size
, srcs
);
1721 else if (types
[0] == GLSL_TYPE_INT
)
1722 emit(nir_op_ige
, dest_size
, srcs
);
1724 emit(nir_op_uge
, dest_size
, srcs
);
1726 emit(nir_op_slt
, dest_size
, srcs
);
1729 case ir_binop_equal
:
1730 if (supports_ints
) {
1731 if (types
[0] == GLSL_TYPE_FLOAT
)
1732 emit(nir_op_feq
, dest_size
, srcs
);
1734 emit(nir_op_ieq
, dest_size
, srcs
);
1736 emit(nir_op_seq
, dest_size
, srcs
);
1739 case ir_binop_nequal
:
1740 if (supports_ints
) {
1741 if (types
[0] == GLSL_TYPE_FLOAT
)
1742 emit(nir_op_fne
, dest_size
, srcs
);
1744 emit(nir_op_ine
, dest_size
, srcs
);
1746 emit(nir_op_sne
, dest_size
, srcs
);
1749 case ir_binop_all_equal
:
1750 if (supports_ints
) {
1751 if (types
[0] == GLSL_TYPE_FLOAT
) {
1752 switch (ir
->operands
[0]->type
->vector_elements
) {
1753 case 1: emit(nir_op_feq
, dest_size
, srcs
); break;
1754 case 2: emit(nir_op_ball_fequal2
, dest_size
, srcs
); break;
1755 case 3: emit(nir_op_ball_fequal3
, dest_size
, srcs
); break;
1756 case 4: emit(nir_op_ball_fequal4
, dest_size
, srcs
); break;
1758 unreachable("not reached");
1761 switch (ir
->operands
[0]->type
->vector_elements
) {
1762 case 1: emit(nir_op_ieq
, dest_size
, srcs
); break;
1763 case 2: emit(nir_op_ball_iequal2
, dest_size
, srcs
); break;
1764 case 3: emit(nir_op_ball_iequal3
, dest_size
, srcs
); break;
1765 case 4: emit(nir_op_ball_iequal4
, dest_size
, srcs
); break;
1767 unreachable("not reached");
1771 switch (ir
->operands
[0]->type
->vector_elements
) {
1772 case 1: emit(nir_op_seq
, dest_size
, srcs
); break;
1773 case 2: emit(nir_op_fall_equal2
, dest_size
, srcs
); break;
1774 case 3: emit(nir_op_fall_equal3
, dest_size
, srcs
); break;
1775 case 4: emit(nir_op_fall_equal4
, dest_size
, srcs
); break;
1777 unreachable("not reached");
1781 case ir_binop_any_nequal
:
1782 if (supports_ints
) {
1783 if (types
[0] == GLSL_TYPE_FLOAT
) {
1784 switch (ir
->operands
[0]->type
->vector_elements
) {
1785 case 1: emit(nir_op_fne
, dest_size
, srcs
); break;
1786 case 2: emit(nir_op_bany_fnequal2
, dest_size
, srcs
); break;
1787 case 3: emit(nir_op_bany_fnequal3
, dest_size
, srcs
); break;
1788 case 4: emit(nir_op_bany_fnequal4
, dest_size
, srcs
); break;
1790 unreachable("not reached");
1793 switch (ir
->operands
[0]->type
->vector_elements
) {
1794 case 1: emit(nir_op_ine
, dest_size
, srcs
); break;
1795 case 2: emit(nir_op_bany_inequal2
, dest_size
, srcs
); break;
1796 case 3: emit(nir_op_bany_inequal3
, dest_size
, srcs
); break;
1797 case 4: emit(nir_op_bany_inequal4
, dest_size
, srcs
); break;
1799 unreachable("not reached");
1803 switch (ir
->operands
[0]->type
->vector_elements
) {
1804 case 1: emit(nir_op_sne
, dest_size
, srcs
); break;
1805 case 2: emit(nir_op_fany_nequal2
, dest_size
, srcs
); break;
1806 case 3: emit(nir_op_fany_nequal3
, dest_size
, srcs
); break;
1807 case 4: emit(nir_op_fany_nequal4
, dest_size
, srcs
); break;
1809 unreachable("not reached");
1814 switch (ir
->operands
[0]->type
->vector_elements
) {
1815 case 2: emit(nir_op_fdot2
, dest_size
, srcs
); break;
1816 case 3: emit(nir_op_fdot3
, dest_size
, srcs
); break;
1817 case 4: emit(nir_op_fdot4
, dest_size
, srcs
); break;
1819 unreachable("not reached");
1823 case ir_binop_pack_half_2x16_split
:
1824 emit(nir_op_pack_half_2x16_split
, dest_size
, srcs
);
1826 case ir_binop_bfm
: emit(nir_op_bfm
, dest_size
, srcs
); break;
1827 case ir_binop_ldexp
: emit(nir_op_ldexp
, dest_size
, srcs
); break;
1828 case ir_triop_fma
: emit(nir_op_ffma
, dest_size
, srcs
); break;
1830 instr
= emit(nir_op_flrp
, dest_size
, srcs
);
1831 if (ir
->operands
[0]->type
->vector_elements
!= 1 &&
1832 ir
->operands
[2]->type
->vector_elements
== 1) {
1833 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
;
1835 instr
->src
[2].swizzle
[i
] = 0;
1841 emit(nir_op_bcsel
, dest_size
, srcs
);
1843 emit(nir_op_fcsel
, dest_size
, srcs
);
1846 instr
= emit(nir_op_bfi
, dest_size
, srcs
);
1847 for (unsigned i
= 0; i
< ir
->operands
[1]->type
->vector_elements
; i
++) {
1848 instr
->src
[0].swizzle
[i
] = 0;
1851 case ir_triop_bitfield_extract
:
1852 instr
= emit(out_type
== GLSL_TYPE_INT
? nir_op_ibitfield_extract
:
1853 nir_op_ubitfield_extract
, dest_size
, srcs
);
1854 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1855 instr
->src
[1].swizzle
[i
] = 0;
1856 instr
->src
[2].swizzle
[i
] = 0;
1859 case ir_quadop_bitfield_insert
:
1860 instr
= emit(nir_op_bitfield_insert
, dest_size
, srcs
);
1861 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1862 instr
->src
[2].swizzle
[i
] = 0;
1863 instr
->src
[3].swizzle
[i
] = 0;
1866 case ir_quadop_vector
:
1867 switch (ir
->type
->vector_elements
) {
1868 case 2: emit(nir_op_vec2
, dest_size
, srcs
); break;
1869 case 3: emit(nir_op_vec3
, dest_size
, srcs
); break;
1870 case 4: emit(nir_op_vec4
, dest_size
, srcs
); break;
1871 default: unreachable("not reached");
1876 unreachable("not reached");
1881 nir_visitor::visit(ir_swizzle
*ir
)
1883 nir_alu_instr
*instr
= emit(supports_ints
? nir_op_imov
: nir_op_fmov
,
1884 ir
->type
->vector_elements
,
1885 evaluate_rvalue(ir
->val
));
1887 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1888 for (unsigned i
= 0; i
< ir
->type
->vector_elements
; i
++)
1889 instr
->src
[0].swizzle
[i
] = swizzle
[i
];
1893 nir_visitor::visit(ir_texture
*ir
)
1900 num_srcs
= 1; /* coordinate */
1905 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1906 num_srcs
= 2; /* coordinate, bias/lod */
1910 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1916 if (ir
->lod_info
.lod
!= NULL
)
1917 num_srcs
= 2; /* coordinate, lod */
1919 num_srcs
= 1; /* coordinate */
1923 op
= nir_texop_txf_ms
;
1924 num_srcs
= 2; /* coordinate, sample_index */
1929 if (ir
->lod_info
.lod
!= NULL
)
1930 num_srcs
= 1; /* lod */
1937 num_srcs
= 1; /* coordinate */
1942 num_srcs
= 1; /* coordinate */
1945 case ir_query_levels
:
1946 op
= nir_texop_query_levels
;
1950 case ir_texture_samples
:
1951 op
= nir_texop_texture_samples
;
1956 unreachable("not reached");
1959 if (ir
->projector
!= NULL
)
1961 if (ir
->shadow_comparitor
!= NULL
)
1963 if (ir
->offset
!= NULL
&& ir
->offset
->as_constant() == NULL
)
1966 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
1969 instr
->sampler_dim
=
1970 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
1971 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
1972 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
1973 if (instr
->is_shadow
)
1974 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
1975 switch (ir
->type
->base_type
) {
1976 case GLSL_TYPE_FLOAT
:
1977 instr
->dest_type
= nir_type_float
;
1980 instr
->dest_type
= nir_type_int
;
1982 case GLSL_TYPE_UINT
:
1983 instr
->dest_type
= nir_type_unsigned
;
1986 unreachable("not reached");
1989 instr
->sampler
= evaluate_deref(&instr
->instr
, ir
->sampler
);
1991 unsigned src_number
= 0;
1993 if (ir
->coordinate
!= NULL
) {
1994 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
1995 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->coordinate
);
1996 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2000 if (ir
->projector
!= NULL
) {
2001 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->projector
);
2002 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2006 if (ir
->shadow_comparitor
!= NULL
) {
2007 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->shadow_comparitor
);
2008 instr
->src
[src_number
].src_type
= nir_tex_src_comparitor
;
2012 if (ir
->offset
!= NULL
) {
2013 /* we don't support multiple offsets yet */
2014 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2016 ir_constant
*const_offset
= ir
->offset
->as_constant();
2017 if (const_offset
!= NULL
) {
2018 for (unsigned i
= 0; i
< const_offset
->type
->vector_elements
; i
++)
2019 instr
->const_offset
[i
] = const_offset
->value
.i
[i
];
2021 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->offset
);
2022 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2029 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.bias
);
2030 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2037 if (ir
->lod_info
.lod
!= NULL
) {
2038 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.lod
);
2039 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2045 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.grad
.dPdx
);
2046 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2048 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.grad
.dPdy
);
2049 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2054 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.sample_index
);
2055 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2060 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2067 assert(src_number
== num_srcs
);
2069 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
));
2073 nir_visitor::visit(ir_constant
*ir
)
2076 * We don't know if this variable is an an array or struct that gets
2077 * dereferenced, so do the safe thing an make it a variable with a
2078 * constant initializer and return a dereference.
2082 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2083 var
->data
.read_only
= true;
2084 var
->constant_initializer
= constant_copy(ir
, var
);
2086 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2087 this->deref_tail
= &this->deref_head
->deref
;
2091 nir_visitor::visit(ir_dereference_variable
*ir
)
2093 struct hash_entry
*entry
=
2094 _mesa_hash_table_search(this->var_table
, ir
->var
);
2096 nir_variable
*var
= (nir_variable
*) entry
->data
;
2098 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2099 this->deref_head
= deref
;
2100 this->deref_tail
= &deref
->deref
;
2104 nir_visitor::visit(ir_dereference_record
*ir
)
2106 ir
->record
->accept(this);
2108 int field_index
= this->deref_tail
->type
->field_index(ir
->field
);
2109 assert(field_index
>= 0);
2111 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2112 deref
->deref
.type
= ir
->type
;
2113 this->deref_tail
->child
= &deref
->deref
;
2114 this->deref_tail
= &deref
->deref
;
2118 nir_visitor::visit(ir_dereference_array
*ir
)
2120 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2121 deref
->deref
.type
= ir
->type
;
2123 ir_constant
*const_index
= ir
->array_index
->as_constant();
2124 if (const_index
!= NULL
) {
2125 deref
->deref_array_type
= nir_deref_array_type_direct
;
2126 deref
->base_offset
= const_index
->value
.u
[0];
2128 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2129 deref
->indirect
= evaluate_rvalue(ir
->array_index
);
2132 ir
->array
->accept(this);
2134 this->deref_tail
->child
= &deref
->deref
;
2135 ralloc_steal(this->deref_tail
, deref
);
2136 this->deref_tail
= &deref
->deref
;
2140 nir_visitor::visit(ir_barrier
*ir
)
2142 nir_intrinsic_instr
*instr
=
2143 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2144 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);