2 * Copyright © 2014 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 * Connor Abbott (cwabbott0@gmail.com)
28 #include "glsl_to_nir.h"
29 #include "nir_control_flow.h"
30 #include "ir_visitor.h"
31 #include "ir_hierarchical_visitor.h"
35 * pass to lower GLSL IR to NIR
37 * This will lower variable dereferences to loads/stores of corresponding
38 * variables in NIR - the variables will be converted to registers in a later
44 class nir_visitor
: public ir_visitor
47 nir_visitor(nir_shader
*shader
);
50 virtual void visit(ir_variable
*);
51 virtual void visit(ir_function
*);
52 virtual void visit(ir_function_signature
*);
53 virtual void visit(ir_loop
*);
54 virtual void visit(ir_if
*);
55 virtual void visit(ir_discard
*);
56 virtual void visit(ir_loop_jump
*);
57 virtual void visit(ir_return
*);
58 virtual void visit(ir_call
*);
59 virtual void visit(ir_assignment
*);
60 virtual void visit(ir_emit_vertex
*);
61 virtual void visit(ir_end_primitive
*);
62 virtual void visit(ir_expression
*);
63 virtual void visit(ir_swizzle
*);
64 virtual void visit(ir_texture
*);
65 virtual void visit(ir_constant
*);
66 virtual void visit(ir_dereference_variable
*);
67 virtual void visit(ir_dereference_record
*);
68 virtual void visit(ir_dereference_array
*);
69 virtual void visit(ir_barrier
*);
71 void create_function(ir_function
*ir
);
74 void create_overload(ir_function_signature
*ir
, nir_function
*function
);
75 void add_instr(nir_instr
*instr
, unsigned num_components
);
76 nir_src
evaluate_rvalue(ir_rvalue
*ir
);
78 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_src
*srcs
);
79 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_src src1
);
80 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_src src1
,
82 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_src src1
,
83 nir_src src2
, nir_src src3
);
88 nir_function_impl
*impl
;
89 exec_list
*cf_node_list
;
90 nir_instr
*result
; /* result of the expression tree last visited */
92 nir_deref_var
*evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
);
94 /* the head of the dereference chain we're creating */
95 nir_deref_var
*deref_head
;
96 /* the tail of the dereference chain we're creating */
97 nir_deref
*deref_tail
;
99 nir_variable
*var
; /* variable created by ir_variable visitor */
101 /* whether the IR we're operating on is per-function or global */
104 /* map of ir_variable -> nir_variable */
105 struct hash_table
*var_table
;
107 /* map of ir_function_signature -> nir_function_overload */
108 struct hash_table
*overload_table
;
112 * This visitor runs before the main visitor, calling create_function() for
113 * each function so that the main visitor can resolve forward references in
117 class nir_function_visitor
: public ir_hierarchical_visitor
120 nir_function_visitor(nir_visitor
*v
) : visitor(v
)
123 virtual ir_visitor_status
visit_enter(ir_function
*);
126 nir_visitor
*visitor
;
129 }; /* end of anonymous namespace */
132 glsl_to_nir(const struct gl_shader_program
*shader_prog
,
133 gl_shader_stage stage
,
134 const nir_shader_compiler_options
*options
)
136 struct gl_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
138 nir_shader
*shader
= nir_shader_create(NULL
, stage
, options
);
140 nir_visitor
v1(shader
);
141 nir_function_visitor
v2(&v1
);
143 visit_exec_list(sh
->ir
, &v1
);
145 nir_lower_outputs_to_temporaries(shader
);
147 /* TODO: Use _mesa_fls instead */
148 unsigned num_textures
= 0;
149 for (unsigned i
= 0; i
< 8 * sizeof(sh
->Program
->SamplersUsed
); i
++)
150 if (sh
->Program
->SamplersUsed
& (1 << i
))
153 shader
->info
.name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
154 if (shader_prog
->Label
)
155 shader
->info
.label
= ralloc_strdup(shader
, shader_prog
->Label
);
156 shader
->info
.num_textures
= num_textures
;
157 shader
->info
.num_ubos
= sh
->NumUniformBlocks
;
158 shader
->info
.num_abos
= shader_prog
->NumAtomicBuffers
;
159 shader
->info
.num_ssbos
= sh
->NumShaderStorageBlocks
;
160 shader
->info
.num_images
= sh
->NumImages
;
161 shader
->info
.inputs_read
= sh
->Program
->InputsRead
;
162 shader
->info
.outputs_written
= sh
->Program
->OutputsWritten
;
163 shader
->info
.system_values_read
= sh
->Program
->SystemValuesRead
;
164 shader
->info
.uses_texture_gather
= sh
->Program
->UsesGather
;
165 shader
->info
.uses_clip_distance_out
=
166 sh
->Program
->ClipDistanceArraySize
!= 0;
167 shader
->info
.separate_shader
= shader_prog
->SeparateShader
;
168 shader
->info
.has_transform_feedback_varyings
=
169 shader_prog
->TransformFeedback
.NumVarying
> 0;
172 case MESA_SHADER_GEOMETRY
:
173 shader
->info
.gs
.vertices_in
= shader_prog
->Geom
.VerticesIn
;
174 shader
->info
.gs
.output_primitive
= sh
->Geom
.OutputType
;
175 shader
->info
.gs
.vertices_out
= sh
->Geom
.VerticesOut
;
176 shader
->info
.gs
.invocations
= sh
->Geom
.Invocations
;
177 shader
->info
.gs
.uses_end_primitive
= shader_prog
->Geom
.UsesEndPrimitive
;
178 shader
->info
.gs
.uses_streams
= shader_prog
->Geom
.UsesStreams
;
181 case MESA_SHADER_FRAGMENT
: {
182 struct gl_fragment_program
*fp
=
183 (struct gl_fragment_program
*)sh
->Program
;
185 shader
->info
.fs
.uses_discard
= fp
->UsesKill
;
186 shader
->info
.fs
.early_fragment_tests
= sh
->EarlyFragmentTests
;
187 shader
->info
.fs
.depth_layout
= fp
->FragDepthLayout
;
191 case MESA_SHADER_COMPUTE
: {
192 struct gl_compute_program
*cp
= (struct gl_compute_program
*)sh
->Program
;
193 shader
->info
.cs
.local_size
[0] = cp
->LocalSize
[0];
194 shader
->info
.cs
.local_size
[1] = cp
->LocalSize
[1];
195 shader
->info
.cs
.local_size
[2] = cp
->LocalSize
[2];
200 break; /* No stage-specific info */
206 nir_visitor::nir_visitor(nir_shader
*shader
)
208 this->supports_ints
= shader
->options
->native_integers
;
209 this->shader
= shader
;
210 this->is_global
= true;
211 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
212 _mesa_key_pointer_equal
);
213 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
214 _mesa_key_pointer_equal
);
217 nir_visitor::~nir_visitor()
219 _mesa_hash_table_destroy(this->var_table
, NULL
);
220 _mesa_hash_table_destroy(this->overload_table
, NULL
);
224 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
227 ralloc_steal(mem_ctx
, this->deref_head
);
228 return this->deref_head
;
231 static nir_constant
*
232 constant_copy(ir_constant
*ir
, void *mem_ctx
)
237 nir_constant
*ret
= ralloc(mem_ctx
, nir_constant
);
239 unsigned total_elems
= ir
->type
->components();
241 switch (ir
->type
->base_type
) {
243 for (i
= 0; i
< total_elems
; i
++)
244 ret
->value
.u
[i
] = ir
->value
.u
[i
];
248 for (i
= 0; i
< total_elems
; i
++)
249 ret
->value
.i
[i
] = ir
->value
.i
[i
];
252 case GLSL_TYPE_FLOAT
:
253 for (i
= 0; i
< total_elems
; i
++)
254 ret
->value
.f
[i
] = ir
->value
.f
[i
];
258 for (i
= 0; i
< total_elems
; i
++)
259 ret
->value
.b
[i
] = ir
->value
.b
[i
];
262 case GLSL_TYPE_STRUCT
:
263 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
266 foreach_in_list(ir_constant
, field
, &ir
->components
) {
267 ret
->elements
[i
] = constant_copy(field
, mem_ctx
);
272 case GLSL_TYPE_ARRAY
:
273 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
276 for (i
= 0; i
< ir
->type
->length
; i
++)
277 ret
->elements
[i
] = constant_copy(ir
->array_elements
[i
], mem_ctx
);
281 unreachable("not reached");
288 nir_visitor::visit(ir_variable
*ir
)
290 nir_variable
*var
= ralloc(shader
, nir_variable
);
291 var
->type
= ir
->type
;
292 var
->name
= ralloc_strdup(var
, ir
->name
);
294 if (ir
->is_interface_instance() && ir
->get_max_ifc_array_access() != NULL
) {
295 unsigned size
= ir
->get_interface_type()->length
;
296 var
->max_ifc_array_access
= ralloc_array(var
, unsigned, size
);
297 memcpy(var
->max_ifc_array_access
, ir
->get_max_ifc_array_access(),
298 size
* sizeof(unsigned));
300 var
->max_ifc_array_access
= NULL
;
303 var
->data
.read_only
= ir
->data
.read_only
;
304 var
->data
.centroid
= ir
->data
.centroid
;
305 var
->data
.sample
= ir
->data
.sample
;
306 var
->data
.invariant
= ir
->data
.invariant
;
307 var
->data
.location
= ir
->data
.location
;
309 switch(ir
->data
.mode
) {
311 case ir_var_temporary
:
313 var
->data
.mode
= nir_var_global
;
315 var
->data
.mode
= nir_var_local
;
318 case ir_var_function_in
:
319 case ir_var_function_out
:
320 case ir_var_function_inout
:
321 case ir_var_const_in
:
322 var
->data
.mode
= nir_var_local
;
325 case ir_var_shader_in
:
326 if (shader
->stage
== MESA_SHADER_FRAGMENT
&&
327 ir
->data
.location
== VARYING_SLOT_FACE
) {
328 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
329 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
330 var
->data
.mode
= nir_var_system_value
;
331 } else if (shader
->stage
== MESA_SHADER_GEOMETRY
&&
332 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
333 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
334 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
335 var
->data
.mode
= nir_var_system_value
;
337 var
->data
.mode
= nir_var_shader_in
;
341 case ir_var_shader_out
:
342 var
->data
.mode
= nir_var_shader_out
;
346 var
->data
.mode
= nir_var_uniform
;
349 case ir_var_shader_storage
:
350 var
->data
.mode
= nir_var_shader_storage
;
353 case ir_var_system_value
:
354 var
->data
.mode
= nir_var_system_value
;
358 unreachable("not reached");
361 var
->data
.interpolation
= ir
->data
.interpolation
;
362 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
363 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
364 var
->data
.explicit_location
= ir
->data
.explicit_location
;
365 var
->data
.explicit_index
= ir
->data
.explicit_index
;
366 var
->data
.explicit_binding
= ir
->data
.explicit_binding
;
367 var
->data
.has_initializer
= ir
->data
.has_initializer
;
368 var
->data
.is_unmatched_generic_inout
= ir
->data
.is_unmatched_generic_inout
;
369 var
->data
.location_frac
= ir
->data
.location_frac
;
370 var
->data
.from_named_ifc_block_array
= ir
->data
.from_named_ifc_block_array
;
371 var
->data
.from_named_ifc_block_nonarray
= ir
->data
.from_named_ifc_block_nonarray
;
373 switch (ir
->data
.depth_layout
) {
374 case ir_depth_layout_none
:
375 var
->data
.depth_layout
= nir_depth_layout_none
;
377 case ir_depth_layout_any
:
378 var
->data
.depth_layout
= nir_depth_layout_any
;
380 case ir_depth_layout_greater
:
381 var
->data
.depth_layout
= nir_depth_layout_greater
;
383 case ir_depth_layout_less
:
384 var
->data
.depth_layout
= nir_depth_layout_less
;
386 case ir_depth_layout_unchanged
:
387 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
390 unreachable("not reached");
393 var
->data
.index
= ir
->data
.index
;
394 var
->data
.binding
= ir
->data
.binding
;
395 /* XXX Get rid of buffer_index */
396 var
->data
.atomic
.buffer_index
= ir
->data
.binding
;
397 var
->data
.atomic
.offset
= ir
->data
.atomic
.offset
;
398 var
->data
.image
.read_only
= ir
->data
.image_read_only
;
399 var
->data
.image
.write_only
= ir
->data
.image_write_only
;
400 var
->data
.image
.coherent
= ir
->data
.image_coherent
;
401 var
->data
.image
._volatile
= ir
->data
.image_volatile
;
402 var
->data
.image
.restrict_flag
= ir
->data
.image_restrict
;
403 var
->data
.image
.format
= ir
->data
.image_format
;
404 var
->data
.max_array_access
= ir
->data
.max_array_access
;
406 var
->num_state_slots
= ir
->get_num_state_slots();
407 if (var
->num_state_slots
> 0) {
408 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
409 var
->num_state_slots
);
411 ir_state_slot
*state_slots
= ir
->get_state_slots();
412 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
413 for (unsigned j
= 0; j
< 5; j
++)
414 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
415 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
418 var
->state_slots
= NULL
;
421 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
423 var
->interface_type
= ir
->get_interface_type();
425 if (var
->data
.mode
== nir_var_local
)
426 nir_function_impl_add_variable(impl
, var
);
428 nir_shader_add_variable(shader
, var
);
430 _mesa_hash_table_insert(var_table
, ir
, var
);
435 nir_function_visitor::visit_enter(ir_function
*ir
)
437 visitor
->create_function(ir
);
438 return visit_continue_with_parent
;
443 nir_visitor::create_function(ir_function
*ir
)
445 nir_function
*func
= nir_function_create(this->shader
, ir
->name
);
446 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
447 create_overload(sig
, func
);
454 nir_visitor::create_overload(ir_function_signature
*ir
, nir_function
*function
)
456 if (ir
->is_intrinsic
)
459 nir_function_overload
*overload
= nir_function_overload_create(function
);
461 unsigned num_params
= ir
->parameters
.length();
462 overload
->num_params
= num_params
;
463 overload
->params
= ralloc_array(shader
, nir_parameter
, num_params
);
466 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
467 switch (param
->data
.mode
) {
468 case ir_var_function_in
:
469 overload
->params
[i
].param_type
= nir_parameter_in
;
472 case ir_var_function_out
:
473 overload
->params
[i
].param_type
= nir_parameter_out
;
476 case ir_var_function_inout
:
477 overload
->params
[i
].param_type
= nir_parameter_inout
;
481 unreachable("not reached");
484 overload
->params
[i
].type
= param
->type
;
488 overload
->return_type
= ir
->return_type
;
490 _mesa_hash_table_insert(this->overload_table
, ir
, overload
);
494 nir_visitor::visit(ir_function
*ir
)
496 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
501 nir_visitor::visit(ir_function_signature
*ir
)
503 if (ir
->is_intrinsic
)
506 struct hash_entry
*entry
=
507 _mesa_hash_table_search(this->overload_table
, ir
);
510 nir_function_overload
*overload
= (nir_function_overload
*) entry
->data
;
512 if (ir
->is_defined
) {
513 nir_function_impl
*impl
= nir_function_impl_create(overload
);
516 unsigned num_params
= overload
->num_params
;
517 impl
->num_params
= num_params
;
518 impl
->params
= ralloc_array(this->shader
, nir_variable
*, num_params
);
520 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
522 impl
->params
[i
] = this->var
;
526 if (overload
->return_type
== glsl_type::void_type
) {
527 impl
->return_var
= NULL
;
529 impl
->return_var
= ralloc(this->shader
, nir_variable
);
530 impl
->return_var
->name
= ralloc_strdup(impl
->return_var
,
532 impl
->return_var
->type
= overload
->return_type
;
535 this->is_global
= false;
537 this->cf_node_list
= &impl
->body
;
538 visit_exec_list(&ir
->body
, this);
540 this->is_global
= true;
542 overload
->impl
= NULL
;
547 nir_visitor::visit(ir_loop
*ir
)
549 exec_list
*old_list
= this->cf_node_list
;
551 nir_loop
*loop
= nir_loop_create(this->shader
);
552 nir_cf_node_insert_end(old_list
, &loop
->cf_node
);
553 this->cf_node_list
= &loop
->body
;
554 visit_exec_list(&ir
->body_instructions
, this);
556 this->cf_node_list
= old_list
;
560 nir_visitor::visit(ir_if
*ir
)
562 nir_src condition
= evaluate_rvalue(ir
->condition
);
564 exec_list
*old_list
= this->cf_node_list
;
566 nir_if
*if_stmt
= nir_if_create(this->shader
);
567 if_stmt
->condition
= condition
;
568 nir_cf_node_insert_end(old_list
, &if_stmt
->cf_node
);
570 this->cf_node_list
= &if_stmt
->then_list
;
571 visit_exec_list(&ir
->then_instructions
, this);
573 this->cf_node_list
= &if_stmt
->else_list
;
574 visit_exec_list(&ir
->else_instructions
, this);
576 this->cf_node_list
= old_list
;
580 nir_visitor::visit(ir_discard
*ir
)
583 * discards aren't treated as control flow, because before we lower them
584 * they can appear anywhere in the shader and the stuff after them may still
585 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
586 * discards will be immediately followed by a return.
589 nir_intrinsic_instr
*discard
;
591 discard
= nir_intrinsic_instr_create(this->shader
,
592 nir_intrinsic_discard_if
);
593 discard
->src
[0] = evaluate_rvalue(ir
->condition
);
595 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
597 nir_instr_insert_after_cf_list(this->cf_node_list
, &discard
->instr
);
601 nir_visitor::visit(ir_emit_vertex
*ir
)
603 nir_intrinsic_instr
*instr
=
604 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
605 instr
->const_index
[0] = ir
->stream_id();
606 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
610 nir_visitor::visit(ir_end_primitive
*ir
)
612 nir_intrinsic_instr
*instr
=
613 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
614 instr
->const_index
[0] = ir
->stream_id();
615 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
619 nir_visitor::visit(ir_loop_jump
*ir
)
623 case ir_loop_jump::jump_break
:
624 type
= nir_jump_break
;
626 case ir_loop_jump::jump_continue
:
627 type
= nir_jump_continue
;
630 unreachable("not reached");
633 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
634 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
638 nir_visitor::visit(ir_return
*ir
)
640 if (ir
->value
!= NULL
) {
641 nir_intrinsic_instr
*copy
=
642 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
644 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
645 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
648 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
649 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
653 nir_visitor::visit(ir_call
*ir
)
655 if (ir
->callee
->is_intrinsic
) {
657 if (strcmp(ir
->callee_name(), "__intrinsic_atomic_read") == 0) {
658 op
= nir_intrinsic_atomic_counter_read_var
;
659 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_increment") == 0) {
660 op
= nir_intrinsic_atomic_counter_inc_var
;
661 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_predecrement") == 0) {
662 op
= nir_intrinsic_atomic_counter_dec_var
;
663 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_load") == 0) {
664 op
= nir_intrinsic_image_load
;
665 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_store") == 0) {
666 op
= nir_intrinsic_image_store
;
667 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_add") == 0) {
668 op
= nir_intrinsic_image_atomic_add
;
669 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_min") == 0) {
670 op
= nir_intrinsic_image_atomic_min
;
671 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_max") == 0) {
672 op
= nir_intrinsic_image_atomic_max
;
673 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_and") == 0) {
674 op
= nir_intrinsic_image_atomic_and
;
675 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_or") == 0) {
676 op
= nir_intrinsic_image_atomic_or
;
677 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_xor") == 0) {
678 op
= nir_intrinsic_image_atomic_xor
;
679 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_exchange") == 0) {
680 op
= nir_intrinsic_image_atomic_exchange
;
681 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_comp_swap") == 0) {
682 op
= nir_intrinsic_image_atomic_comp_swap
;
683 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier") == 0) {
684 op
= nir_intrinsic_memory_barrier
;
685 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_size") == 0) {
686 op
= nir_intrinsic_image_size
;
687 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_samples") == 0) {
688 op
= nir_intrinsic_image_samples
;
689 } else if (strcmp(ir
->callee_name(), "__intrinsic_store_ssbo") == 0) {
690 op
= nir_intrinsic_store_ssbo
;
691 } else if (strcmp(ir
->callee_name(), "__intrinsic_load_ssbo") == 0) {
692 op
= nir_intrinsic_load_ssbo
;
693 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_add_internal") == 0) {
694 op
= nir_intrinsic_ssbo_atomic_add
;
695 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_and_internal") == 0) {
696 op
= nir_intrinsic_ssbo_atomic_and
;
697 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_or_internal") == 0) {
698 op
= nir_intrinsic_ssbo_atomic_or
;
699 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_xor_internal") == 0) {
700 op
= nir_intrinsic_ssbo_atomic_xor
;
701 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_min_internal") == 0) {
702 assert(ir
->return_deref
);
703 if (ir
->return_deref
->type
== glsl_type::int_type
)
704 op
= nir_intrinsic_ssbo_atomic_imin
;
705 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
706 op
= nir_intrinsic_ssbo_atomic_umin
;
708 unreachable("Invalid type");
709 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_max_internal") == 0) {
710 assert(ir
->return_deref
);
711 if (ir
->return_deref
->type
== glsl_type::int_type
)
712 op
= nir_intrinsic_ssbo_atomic_imax
;
713 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
714 op
= nir_intrinsic_ssbo_atomic_umax
;
716 unreachable("Invalid type");
717 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_exchange_internal") == 0) {
718 op
= nir_intrinsic_ssbo_atomic_exchange
;
719 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_comp_swap_internal") == 0) {
720 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
722 unreachable("not reached");
725 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
726 nir_dest
*dest
= &instr
->dest
;
729 case nir_intrinsic_atomic_counter_read_var
:
730 case nir_intrinsic_atomic_counter_inc_var
:
731 case nir_intrinsic_atomic_counter_dec_var
: {
732 ir_dereference
*param
=
733 (ir_dereference
*) ir
->actual_parameters
.get_head();
734 instr
->variables
[0] = evaluate_deref(&instr
->instr
, param
);
735 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, NULL
);
736 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
739 case nir_intrinsic_image_load
:
740 case nir_intrinsic_image_store
:
741 case nir_intrinsic_image_atomic_add
:
742 case nir_intrinsic_image_atomic_min
:
743 case nir_intrinsic_image_atomic_max
:
744 case nir_intrinsic_image_atomic_and
:
745 case nir_intrinsic_image_atomic_or
:
746 case nir_intrinsic_image_atomic_xor
:
747 case nir_intrinsic_image_atomic_exchange
:
748 case nir_intrinsic_image_atomic_comp_swap
:
749 case nir_intrinsic_image_samples
:
750 case nir_intrinsic_image_size
: {
751 nir_ssa_undef_instr
*instr_undef
=
752 nir_ssa_undef_instr_create(shader
, 1);
753 nir_instr_insert_after_cf_list(this->cf_node_list
,
754 &instr_undef
->instr
);
756 /* Set the image variable dereference. */
757 exec_node
*param
= ir
->actual_parameters
.get_head();
758 ir_dereference
*image
= (ir_dereference
*)param
;
759 const glsl_type
*type
=
760 image
->variable_referenced()->type
->without_array();
762 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
763 param
= param
->get_next();
765 /* Set the intrinsic destination. */
766 if (ir
->return_deref
) {
767 const nir_intrinsic_info
*info
=
768 &nir_intrinsic_infos
[instr
->intrinsic
];
769 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
770 info
->dest_components
, NULL
);
773 if (op
== nir_intrinsic_image_size
||
774 op
== nir_intrinsic_image_samples
) {
775 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
779 /* Set the address argument, extending the coordinate vector to four
782 const nir_src src_addr
= evaluate_rvalue((ir_dereference
*)param
);
783 nir_alu_instr
*instr_addr
= nir_alu_instr_create(shader
, nir_op_vec4
);
784 nir_ssa_dest_init(&instr_addr
->instr
, &instr_addr
->dest
.dest
, 4, NULL
);
786 for (int i
= 0; i
< 4; i
++) {
787 if (i
< type
->coordinate_components()) {
788 instr_addr
->src
[i
].src
= src_addr
;
789 instr_addr
->src
[i
].swizzle
[0] = i
;
791 instr_addr
->src
[i
].src
= nir_src_for_ssa(&instr_undef
->def
);
795 nir_instr_insert_after_cf_list(cf_node_list
, &instr_addr
->instr
);
796 instr
->src
[0] = nir_src_for_ssa(&instr_addr
->dest
.dest
.ssa
);
797 param
= param
->get_next();
799 /* Set the sample argument, which is undefined for single-sample
802 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
803 instr
->src
[1] = evaluate_rvalue((ir_dereference
*)param
);
804 param
= param
->get_next();
806 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
809 /* Set the intrinsic parameters. */
810 if (!param
->is_tail_sentinel()) {
811 instr
->src
[2] = evaluate_rvalue((ir_dereference
*)param
);
812 param
= param
->get_next();
815 if (!param
->is_tail_sentinel()) {
816 instr
->src
[3] = evaluate_rvalue((ir_dereference
*)param
);
817 param
= param
->get_next();
819 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
822 case nir_intrinsic_memory_barrier
:
823 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
825 case nir_intrinsic_store_ssbo
: {
826 exec_node
*param
= ir
->actual_parameters
.get_head();
827 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
829 param
= param
->get_next();
830 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
832 param
= param
->get_next();
833 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
835 param
= param
->get_next();
836 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
839 /* Check if we need the indirect version */
840 ir_constant
*const_offset
= offset
->as_constant();
842 op
= nir_intrinsic_store_ssbo_indirect
;
844 instr
= nir_intrinsic_instr_create(shader
, op
);
845 instr
->src
[2] = evaluate_rvalue(offset
);
846 instr
->const_index
[0] = 0;
848 instr
->const_index
[0] = const_offset
->value
.u
[0];
851 instr
->const_index
[1] = write_mask
->value
.u
[0];
853 instr
->src
[0] = evaluate_rvalue(val
);
854 instr
->num_components
= val
->type
->vector_elements
;
856 instr
->src
[1] = evaluate_rvalue(block
);
857 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
860 case nir_intrinsic_load_ssbo
: {
861 exec_node
*param
= ir
->actual_parameters
.get_head();
862 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
864 param
= param
->get_next();
865 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
867 /* Check if we need the indirect version */
868 ir_constant
*const_offset
= offset
->as_constant();
870 op
= nir_intrinsic_load_ssbo_indirect
;
872 instr
= nir_intrinsic_instr_create(shader
, op
);
873 instr
->src
[1] = evaluate_rvalue(offset
);
874 instr
->const_index
[0] = 0;
877 instr
->const_index
[0] = const_offset
->value
.u
[0];
880 instr
->src
[0] = evaluate_rvalue(block
);
882 const glsl_type
*type
= ir
->return_deref
->var
->type
;
883 instr
->num_components
= type
->vector_elements
;
885 /* Setup destination register */
886 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
887 type
->vector_elements
, NULL
);
889 /* Insert the created nir instruction now since in the case of boolean
890 * result we will need to emit another instruction after it
892 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
895 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
896 * consider a true boolean to be ~0. Fix this up with a != 0
899 if (type
->base_type
== GLSL_TYPE_BOOL
) {
900 nir_load_const_instr
*const_zero
=
901 nir_load_const_instr_create(shader
, 1);
902 const_zero
->value
.u
[0] = 0;
903 nir_instr_insert_after_cf_list(this->cf_node_list
,
906 nir_alu_instr
*load_ssbo_compare
=
907 nir_alu_instr_create(shader
, nir_op_ine
);
908 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
909 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
910 load_ssbo_compare
->src
[1].src
.is_ssa
= true;
911 load_ssbo_compare
->src
[1].src
.ssa
= &const_zero
->def
;
912 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
913 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
914 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
915 &load_ssbo_compare
->dest
.dest
,
916 type
->vector_elements
, NULL
);
917 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
918 nir_instr_insert_after_cf_list(this->cf_node_list
,
919 &load_ssbo_compare
->instr
);
920 dest
= &load_ssbo_compare
->dest
.dest
;
924 case nir_intrinsic_ssbo_atomic_add
:
925 case nir_intrinsic_ssbo_atomic_imin
:
926 case nir_intrinsic_ssbo_atomic_umin
:
927 case nir_intrinsic_ssbo_atomic_imax
:
928 case nir_intrinsic_ssbo_atomic_umax
:
929 case nir_intrinsic_ssbo_atomic_and
:
930 case nir_intrinsic_ssbo_atomic_or
:
931 case nir_intrinsic_ssbo_atomic_xor
:
932 case nir_intrinsic_ssbo_atomic_exchange
:
933 case nir_intrinsic_ssbo_atomic_comp_swap
: {
934 int param_count
= ir
->actual_parameters
.length();
935 assert(param_count
== 3 || param_count
== 4);
938 exec_node
*param
= ir
->actual_parameters
.get_head();
939 ir_instruction
*inst
= (ir_instruction
*) param
;
940 instr
->src
[0] = evaluate_rvalue(inst
->as_rvalue());
943 param
= param
->get_next();
944 inst
= (ir_instruction
*) param
;
945 instr
->src
[1] = evaluate_rvalue(inst
->as_rvalue());
947 /* data1 parameter (this is always present) */
948 param
= param
->get_next();
949 inst
= (ir_instruction
*) param
;
950 instr
->src
[2] = evaluate_rvalue(inst
->as_rvalue());
952 /* data2 parameter (only with atomic_comp_swap) */
953 if (param_count
== 4) {
954 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
955 param
= param
->get_next();
956 inst
= (ir_instruction
*) param
;
957 instr
->src
[3] = evaluate_rvalue(inst
->as_rvalue());
961 assert(ir
->return_deref
);
962 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
963 ir
->return_deref
->type
->vector_elements
, NULL
);
964 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
968 unreachable("not reached");
971 if (ir
->return_deref
) {
972 nir_intrinsic_instr
*store_instr
=
973 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
974 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
976 store_instr
->variables
[0] =
977 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
978 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
980 nir_instr_insert_after_cf_list(this->cf_node_list
,
981 &store_instr
->instr
);
987 struct hash_entry
*entry
=
988 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
990 nir_function_overload
*callee
= (nir_function_overload
*) entry
->data
;
992 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
995 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
996 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
1000 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
1001 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
1005 nir_visitor::visit(ir_assignment
*ir
)
1007 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1009 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1010 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1011 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1012 nir_intrinsic_instr
*copy
=
1013 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1015 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1016 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1018 if (ir
->condition
) {
1019 nir_if
*if_stmt
= nir_if_create(this->shader
);
1020 if_stmt
->condition
= evaluate_rvalue(ir
->condition
);
1021 nir_cf_node_insert_end(this->cf_node_list
, &if_stmt
->cf_node
);
1022 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, ©
->instr
);
1024 nir_instr_insert_after_cf_list(this->cf_node_list
, ©
->instr
);
1029 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1031 ir
->lhs
->accept(this);
1032 nir_deref_var
*lhs_deref
= this->deref_head
;
1033 nir_src src
= evaluate_rvalue(ir
->rhs
);
1035 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1037 * We have no good way to update only part of a variable, so just load
1038 * the LHS and do a vec operation to combine the old with the new, and
1040 * back into the LHS. Copy propagation should get rid of the mess.
1043 nir_intrinsic_instr
*load
=
1044 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1045 load
->num_components
= ir
->lhs
->type
->vector_elements
;
1046 nir_ssa_dest_init(&load
->instr
, &load
->dest
, num_components
, NULL
);
1047 load
->variables
[0] = lhs_deref
;
1048 ralloc_steal(load
, load
->variables
[0]);
1049 nir_instr_insert_after_cf_list(this->cf_node_list
, &load
->instr
);
1052 switch (ir
->lhs
->type
->vector_elements
) {
1053 case 1: vec_op
= nir_op_imov
; break;
1054 case 2: vec_op
= nir_op_vec2
; break;
1055 case 3: vec_op
= nir_op_vec3
; break;
1056 case 4: vec_op
= nir_op_vec4
; break;
1057 default: unreachable("Invalid number of components"); break;
1059 nir_alu_instr
*vec
= nir_alu_instr_create(this->shader
, vec_op
);
1060 nir_ssa_dest_init(&vec
->instr
, &vec
->dest
.dest
, num_components
, NULL
);
1061 vec
->dest
.write_mask
= (1 << num_components
) - 1;
1063 unsigned component
= 0;
1064 for (unsigned i
= 0; i
< ir
->lhs
->type
->vector_elements
; i
++) {
1065 if (ir
->write_mask
& (1 << i
)) {
1066 vec
->src
[i
].src
= src
;
1068 /* GLSL IR will give us the input to the write-masked assignment
1069 * in a single packed vector. So, for example, if the
1070 * writemask is xzw, then we have to swizzle x -> x, y -> z,
1071 * and z -> w and get the y component from the load.
1073 vec
->src
[i
].swizzle
[0] = component
++;
1075 vec
->src
[i
].src
.is_ssa
= true;
1076 vec
->src
[i
].src
.ssa
= &load
->dest
.ssa
;
1077 vec
->src
[i
].swizzle
[0] = i
;
1081 nir_instr_insert_after_cf_list(this->cf_node_list
, &vec
->instr
);
1084 src
.ssa
= &vec
->dest
.dest
.ssa
;
1087 nir_intrinsic_instr
*store
=
1088 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1089 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1090 nir_deref
*store_deref
= nir_copy_deref(store
, &lhs_deref
->deref
);
1091 store
->variables
[0] = nir_deref_as_var(store_deref
);
1092 store
->src
[0] = src
;
1094 if (ir
->condition
) {
1095 nir_if
*if_stmt
= nir_if_create(this->shader
);
1096 if_stmt
->condition
= evaluate_rvalue(ir
->condition
);
1097 nir_cf_node_insert_end(this->cf_node_list
, &if_stmt
->cf_node
);
1098 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, &store
->instr
);
1100 nir_instr_insert_after_cf_list(this->cf_node_list
, &store
->instr
);
1105 * Given an instruction, returns a pointer to its destination or NULL if there
1106 * is no destination.
1108 * Note that this only handles instructions we generate at this level.
1111 get_instr_dest(nir_instr
*instr
)
1113 nir_alu_instr
*alu_instr
;
1114 nir_intrinsic_instr
*intrinsic_instr
;
1115 nir_tex_instr
*tex_instr
;
1117 switch (instr
->type
) {
1118 case nir_instr_type_alu
:
1119 alu_instr
= nir_instr_as_alu(instr
);
1120 return &alu_instr
->dest
.dest
;
1122 case nir_instr_type_intrinsic
:
1123 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1124 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1125 return &intrinsic_instr
->dest
;
1129 case nir_instr_type_tex
:
1130 tex_instr
= nir_instr_as_tex(instr
);
1131 return &tex_instr
->dest
;
1134 unreachable("not reached");
1141 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
)
1143 nir_dest
*dest
= get_instr_dest(instr
);
1146 nir_ssa_dest_init(instr
, dest
, num_components
, NULL
);
1148 nir_instr_insert_after_cf_list(this->cf_node_list
, instr
);
1149 this->result
= instr
;
1153 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1156 if (ir
->as_dereference() || ir
->as_constant()) {
1158 * A dereference is being used on the right hand side, which means we
1159 * must emit a variable load.
1162 nir_intrinsic_instr
*load_instr
=
1163 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1164 load_instr
->num_components
= ir
->type
->vector_elements
;
1165 load_instr
->variables
[0] = this->deref_head
;
1166 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1167 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
);
1170 nir_dest
*dest
= get_instr_dest(this->result
);
1171 assert(dest
->is_ssa
);
1173 return nir_src_for_ssa(&dest
->ssa
);
1177 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src
*srcs
)
1179 nir_alu_instr
*instr
= nir_alu_instr_create(this->shader
, op
);
1180 for (unsigned i
= 0; i
< nir_op_infos
[op
].num_inputs
; i
++)
1181 instr
->src
[i
].src
= srcs
[i
];
1182 instr
->dest
.write_mask
= (1 << dest_size
) - 1;
1183 add_instr(&instr
->instr
, dest_size
);
1188 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src src1
)
1190 assert(nir_op_infos
[op
].num_inputs
== 1);
1191 return emit(op
, dest_size
, &src1
);
1195 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src src1
,
1198 assert(nir_op_infos
[op
].num_inputs
== 2);
1199 nir_src srcs
[] = { src1
, src2
};
1200 return emit(op
, dest_size
, srcs
);
1204 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src src1
,
1205 nir_src src2
, nir_src src3
)
1207 assert(nir_op_infos
[op
].num_inputs
== 3);
1208 nir_src srcs
[] = { src1
, src2
, src3
};
1209 return emit(op
, dest_size
, srcs
);
1213 nir_visitor::visit(ir_expression
*ir
)
1215 /* Some special cases */
1216 switch (ir
->operation
) {
1217 case ir_binop_ubo_load
: {
1218 ir_constant
*const_index
= ir
->operands
[1]->as_constant();
1220 nir_intrinsic_op op
;
1222 op
= nir_intrinsic_load_ubo
;
1224 op
= nir_intrinsic_load_ubo_indirect
;
1226 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(this->shader
, op
);
1227 load
->num_components
= ir
->type
->vector_elements
;
1228 load
->const_index
[0] = const_index
? const_index
->value
.u
[0] : 0; /* base offset */
1229 load
->src
[0] = evaluate_rvalue(ir
->operands
[0]);
1231 load
->src
[1] = evaluate_rvalue(ir
->operands
[1]);
1232 add_instr(&load
->instr
, ir
->type
->vector_elements
);
1235 * In UBO's, a true boolean value is any non-zero value, but we consider
1236 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1239 if (ir
->type
->base_type
== GLSL_TYPE_BOOL
) {
1240 nir_load_const_instr
*const_zero
= nir_load_const_instr_create(shader
, 1);
1241 const_zero
->value
.u
[0] = 0;
1242 nir_instr_insert_after_cf_list(this->cf_node_list
, &const_zero
->instr
);
1244 nir_alu_instr
*compare
= nir_alu_instr_create(shader
, nir_op_ine
);
1245 compare
->src
[0].src
.is_ssa
= true;
1246 compare
->src
[0].src
.ssa
= &load
->dest
.ssa
;
1247 compare
->src
[1].src
.is_ssa
= true;
1248 compare
->src
[1].src
.ssa
= &const_zero
->def
;
1249 for (unsigned i
= 0; i
< ir
->type
->vector_elements
; i
++)
1250 compare
->src
[1].swizzle
[i
] = 0;
1251 compare
->dest
.write_mask
= (1 << ir
->type
->vector_elements
) - 1;
1253 add_instr(&compare
->instr
, ir
->type
->vector_elements
);
1259 case ir_unop_interpolate_at_centroid
:
1260 case ir_binop_interpolate_at_offset
:
1261 case ir_binop_interpolate_at_sample
: {
1262 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1263 ir_swizzle
*swizzle
= NULL
;
1265 /* the api does not allow a swizzle here, but the varying packing code
1266 * may have pushed one into here.
1268 swizzle
= ir
->operands
[0]->as_swizzle();
1270 deref
= swizzle
->val
->as_dereference();
1274 deref
->accept(this);
1276 nir_intrinsic_op op
;
1277 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1278 switch (ir
->operation
) {
1279 case ir_unop_interpolate_at_centroid
:
1280 op
= nir_intrinsic_interp_var_at_centroid
;
1282 case ir_binop_interpolate_at_offset
:
1283 op
= nir_intrinsic_interp_var_at_offset
;
1285 case ir_binop_interpolate_at_sample
:
1286 op
= nir_intrinsic_interp_var_at_sample
;
1289 unreachable("Invalid interpolation intrinsic");
1292 /* This case can happen if the vertex shader does not write the
1293 * given varying. In this case, the linker will lower it to a
1294 * global variable. Since interpolating a variable makes no
1295 * sense, we'll just turn it into a load which will probably
1296 * eventually end up as an SSA definition.
1298 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1299 op
= nir_intrinsic_load_var
;
1302 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1303 intrin
->num_components
= deref
->type
->vector_elements
;
1304 intrin
->variables
[0] = this->deref_head
;
1305 ralloc_steal(intrin
, intrin
->variables
[0]);
1307 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1308 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1309 intrin
->src
[0] = evaluate_rvalue(ir
->operands
[1]);
1311 add_instr(&intrin
->instr
, deref
->type
->vector_elements
);
1314 nir_alu_instr
*mov
= nir_alu_instr_create(shader
, nir_op_imov
);
1315 mov
->dest
.write_mask
= (1 << swizzle
->type
->vector_elements
) - 1;
1316 mov
->src
[0].src
.is_ssa
= true;
1317 mov
->src
[0].src
.ssa
= &intrin
->dest
.ssa
;
1319 mov
->src
[0].swizzle
[0] = swizzle
->mask
.x
;
1320 mov
->src
[0].swizzle
[1] = swizzle
->mask
.y
;
1321 mov
->src
[0].swizzle
[2] = swizzle
->mask
.z
;
1322 mov
->src
[0].swizzle
[3] = swizzle
->mask
.w
;
1323 for (unsigned i
= deref
->type
->vector_elements
; i
< 4; i
++)
1324 mov
->src
[0].swizzle
[i
] = 0;
1326 add_instr(&mov
->instr
, swizzle
->type
->vector_elements
);
1337 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1338 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1340 glsl_base_type types
[4];
1341 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1343 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1345 types
[i
] = GLSL_TYPE_FLOAT
;
1347 glsl_base_type out_type
;
1349 out_type
= ir
->type
->base_type
;
1351 out_type
= GLSL_TYPE_FLOAT
;
1353 unsigned dest_size
= ir
->type
->vector_elements
;
1355 nir_alu_instr
*instr
;
1358 switch (ir
->operation
) {
1359 case ir_unop_bit_not
: emit(nir_op_inot
, dest_size
, srcs
); break;
1360 case ir_unop_logic_not
:
1361 emit(supports_ints
? nir_op_inot
: nir_op_fnot
, dest_size
, srcs
);
1364 instr
= emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fneg
: nir_op_ineg
,
1368 instr
= emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fabs
: nir_op_iabs
,
1371 case ir_unop_saturate
:
1372 assert(types
[0] == GLSL_TYPE_FLOAT
);
1373 instr
= emit(nir_op_fsat
, dest_size
, srcs
);
1376 emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fsign
: nir_op_isign
,
1379 case ir_unop_rcp
: emit(nir_op_frcp
, dest_size
, srcs
); break;
1380 case ir_unop_rsq
: emit(nir_op_frsq
, dest_size
, srcs
); break;
1381 case ir_unop_sqrt
: emit(nir_op_fsqrt
, dest_size
, srcs
); break;
1382 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1383 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1384 case ir_unop_exp2
: emit(nir_op_fexp2
, dest_size
, srcs
); break;
1385 case ir_unop_log2
: emit(nir_op_flog2
, dest_size
, srcs
); break;
1387 emit(supports_ints
? nir_op_i2f
: nir_op_fmov
, dest_size
, srcs
);
1390 emit(supports_ints
? nir_op_u2f
: nir_op_fmov
, dest_size
, srcs
);
1393 emit(supports_ints
? nir_op_b2f
: nir_op_fmov
, dest_size
, srcs
);
1395 case ir_unop_f2i
: emit(nir_op_f2i
, dest_size
, srcs
); break;
1396 case ir_unop_f2u
: emit(nir_op_f2u
, dest_size
, srcs
); break;
1397 case ir_unop_f2b
: emit(nir_op_f2b
, dest_size
, srcs
); break;
1398 case ir_unop_i2b
: emit(nir_op_i2b
, dest_size
, srcs
); break;
1399 case ir_unop_b2i
: emit(nir_op_b2i
, dest_size
, srcs
); break;
1402 case ir_unop_bitcast_i2f
:
1403 case ir_unop_bitcast_f2i
:
1404 case ir_unop_bitcast_u2f
:
1405 case ir_unop_bitcast_f2u
:
1406 case ir_unop_subroutine_to_int
:
1408 emit(nir_op_imov
, dest_size
, srcs
);
1411 switch (ir
->operands
[0]->type
->vector_elements
) {
1413 emit(supports_ints
? nir_op_bany2
: nir_op_fany2
,
1417 emit(supports_ints
? nir_op_bany3
: nir_op_fany3
,
1421 emit(supports_ints
? nir_op_bany4
: nir_op_fany4
,
1425 unreachable("not reached");
1428 case ir_unop_trunc
: emit(nir_op_ftrunc
, dest_size
, srcs
); break;
1429 case ir_unop_ceil
: emit(nir_op_fceil
, dest_size
, srcs
); break;
1430 case ir_unop_floor
: emit(nir_op_ffloor
, dest_size
, srcs
); break;
1431 case ir_unop_fract
: emit(nir_op_ffract
, dest_size
, srcs
); break;
1432 case ir_unop_round_even
: emit(nir_op_fround_even
, dest_size
, srcs
); break;
1433 case ir_unop_sin
: emit(nir_op_fsin
, dest_size
, srcs
); break;
1434 case ir_unop_cos
: emit(nir_op_fcos
, dest_size
, srcs
); break;
1435 case ir_unop_dFdx
: emit(nir_op_fddx
, dest_size
, srcs
); break;
1436 case ir_unop_dFdy
: emit(nir_op_fddy
, dest_size
, srcs
); break;
1437 case ir_unop_dFdx_fine
: emit(nir_op_fddx_fine
, dest_size
, srcs
); break;
1438 case ir_unop_dFdy_fine
: emit(nir_op_fddy_fine
, dest_size
, srcs
); break;
1439 case ir_unop_dFdx_coarse
: emit(nir_op_fddx_coarse
, dest_size
, srcs
); break;
1440 case ir_unop_dFdy_coarse
: emit(nir_op_fddy_coarse
, dest_size
, srcs
); break;
1441 case ir_unop_pack_snorm_2x16
:
1442 emit(nir_op_pack_snorm_2x16
, dest_size
, srcs
);
1444 case ir_unop_pack_snorm_4x8
:
1445 emit(nir_op_pack_snorm_4x8
, dest_size
, srcs
);
1447 case ir_unop_pack_unorm_2x16
:
1448 emit(nir_op_pack_unorm_2x16
, dest_size
, srcs
);
1450 case ir_unop_pack_unorm_4x8
:
1451 emit(nir_op_pack_unorm_4x8
, dest_size
, srcs
);
1453 case ir_unop_pack_half_2x16
:
1454 emit(nir_op_pack_half_2x16
, dest_size
, srcs
);
1456 case ir_unop_unpack_snorm_2x16
:
1457 emit(nir_op_unpack_snorm_2x16
, dest_size
, srcs
);
1459 case ir_unop_unpack_snorm_4x8
:
1460 emit(nir_op_unpack_snorm_4x8
, dest_size
, srcs
);
1462 case ir_unop_unpack_unorm_2x16
:
1463 emit(nir_op_unpack_unorm_2x16
, dest_size
, srcs
);
1465 case ir_unop_unpack_unorm_4x8
:
1466 emit(nir_op_unpack_unorm_4x8
, dest_size
, srcs
);
1468 case ir_unop_unpack_half_2x16
:
1469 emit(nir_op_unpack_half_2x16
, dest_size
, srcs
);
1471 case ir_unop_unpack_half_2x16_split_x
:
1472 emit(nir_op_unpack_half_2x16_split_x
, dest_size
, srcs
);
1474 case ir_unop_unpack_half_2x16_split_y
:
1475 emit(nir_op_unpack_half_2x16_split_y
, dest_size
, srcs
);
1477 case ir_unop_bitfield_reverse
:
1478 emit(nir_op_bitfield_reverse
, dest_size
, srcs
);
1480 case ir_unop_bit_count
:
1481 emit(nir_op_bit_count
, dest_size
, srcs
);
1483 case ir_unop_find_msb
:
1485 case GLSL_TYPE_UINT
:
1486 emit(nir_op_ufind_msb
, dest_size
, srcs
);
1489 emit(nir_op_ifind_msb
, dest_size
, srcs
);
1492 unreachable("Invalid type for findMSB()");
1495 case ir_unop_find_lsb
:
1496 emit(nir_op_find_lsb
, dest_size
, srcs
);
1500 switch (ir
->type
->vector_elements
) {
1502 switch (ir
->operands
[0]->type
->vector_elements
) {
1503 case 1: emit(nir_op_fnoise1_1
, dest_size
, srcs
); break;
1504 case 2: emit(nir_op_fnoise1_2
, dest_size
, srcs
); break;
1505 case 3: emit(nir_op_fnoise1_3
, dest_size
, srcs
); break;
1506 case 4: emit(nir_op_fnoise1_4
, dest_size
, srcs
); break;
1507 default: unreachable("not reached");
1511 switch (ir
->operands
[0]->type
->vector_elements
) {
1512 case 1: emit(nir_op_fnoise2_1
, dest_size
, srcs
); break;
1513 case 2: emit(nir_op_fnoise2_2
, dest_size
, srcs
); break;
1514 case 3: emit(nir_op_fnoise2_3
, dest_size
, srcs
); break;
1515 case 4: emit(nir_op_fnoise2_4
, dest_size
, srcs
); break;
1516 default: unreachable("not reached");
1520 switch (ir
->operands
[0]->type
->vector_elements
) {
1521 case 1: emit(nir_op_fnoise3_1
, dest_size
, srcs
); break;
1522 case 2: emit(nir_op_fnoise3_2
, dest_size
, srcs
); break;
1523 case 3: emit(nir_op_fnoise3_3
, dest_size
, srcs
); break;
1524 case 4: emit(nir_op_fnoise3_4
, dest_size
, srcs
); break;
1525 default: unreachable("not reached");
1529 switch (ir
->operands
[0]->type
->vector_elements
) {
1530 case 1: emit(nir_op_fnoise4_1
, dest_size
, srcs
); break;
1531 case 2: emit(nir_op_fnoise4_2
, dest_size
, srcs
); break;
1532 case 3: emit(nir_op_fnoise4_3
, dest_size
, srcs
); break;
1533 case 4: emit(nir_op_fnoise4_4
, dest_size
, srcs
); break;
1534 default: unreachable("not reached");
1538 unreachable("not reached");
1541 case ir_unop_get_buffer_size
: {
1542 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1544 nir_intrinsic_get_buffer_size
);
1545 load
->num_components
= ir
->type
->vector_elements
;
1546 load
->src
[0] = evaluate_rvalue(ir
->operands
[0]);
1547 add_instr(&load
->instr
, ir
->type
->vector_elements
);
1559 case ir_binop_bit_and
:
1560 case ir_binop_bit_or
:
1561 case ir_binop_bit_xor
:
1562 case ir_binop_logic_and
:
1563 case ir_binop_logic_or
:
1564 case ir_binop_logic_xor
:
1565 case ir_binop_lshift
:
1566 case ir_binop_rshift
:
1567 switch (ir
->operation
) {
1569 if (out_type
== GLSL_TYPE_FLOAT
)
1575 if (out_type
== GLSL_TYPE_FLOAT
)
1581 if (out_type
== GLSL_TYPE_FLOAT
)
1587 if (out_type
== GLSL_TYPE_FLOAT
)
1589 else if (out_type
== GLSL_TYPE_INT
)
1595 if (out_type
== GLSL_TYPE_FLOAT
)
1601 if (out_type
== GLSL_TYPE_FLOAT
)
1603 else if (out_type
== GLSL_TYPE_INT
)
1609 if (out_type
== GLSL_TYPE_FLOAT
)
1611 else if (out_type
== GLSL_TYPE_INT
)
1616 case ir_binop_bit_and
:
1619 case ir_binop_bit_or
:
1622 case ir_binop_bit_xor
:
1625 case ir_binop_logic_and
:
1631 case ir_binop_logic_or
:
1637 case ir_binop_logic_xor
:
1643 case ir_binop_lshift
:
1646 case ir_binop_rshift
:
1647 if (out_type
== GLSL_TYPE_INT
)
1657 unreachable("not reached");
1660 instr
= emit(op
, dest_size
, srcs
);
1662 if (ir
->operands
[0]->type
->vector_elements
!= 1 &&
1663 ir
->operands
[1]->type
->vector_elements
== 1) {
1664 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
;
1666 instr
->src
[1].swizzle
[i
] = 0;
1670 if (ir
->operands
[1]->type
->vector_elements
!= 1 &&
1671 ir
->operands
[0]->type
->vector_elements
== 1) {
1672 for (unsigned i
= 0; i
< ir
->operands
[1]->type
->vector_elements
;
1674 instr
->src
[0].swizzle
[i
] = 0;
1679 case ir_binop_imul_high
:
1680 emit(out_type
== GLSL_TYPE_UINT
? nir_op_umul_high
: nir_op_imul_high
,
1683 case ir_binop_carry
: emit(nir_op_uadd_carry
, dest_size
, srcs
); break;
1684 case ir_binop_borrow
: emit(nir_op_usub_borrow
, dest_size
, srcs
); break;
1686 if (supports_ints
) {
1687 if (types
[0] == GLSL_TYPE_FLOAT
)
1688 emit(nir_op_flt
, dest_size
, srcs
);
1689 else if (types
[0] == GLSL_TYPE_INT
)
1690 emit(nir_op_ilt
, dest_size
, srcs
);
1692 emit(nir_op_ult
, dest_size
, srcs
);
1694 emit(nir_op_slt
, dest_size
, srcs
);
1697 case ir_binop_greater
:
1698 if (supports_ints
) {
1699 if (types
[0] == GLSL_TYPE_FLOAT
)
1700 emit(nir_op_flt
, dest_size
, srcs
[1], srcs
[0]);
1701 else if (types
[0] == GLSL_TYPE_INT
)
1702 emit(nir_op_ilt
, dest_size
, srcs
[1], srcs
[0]);
1704 emit(nir_op_ult
, dest_size
, srcs
[1], srcs
[0]);
1706 emit(nir_op_slt
, dest_size
, srcs
[1], srcs
[0]);
1709 case ir_binop_lequal
:
1710 if (supports_ints
) {
1711 if (types
[0] == GLSL_TYPE_FLOAT
)
1712 emit(nir_op_fge
, dest_size
, srcs
[1], srcs
[0]);
1713 else if (types
[0] == GLSL_TYPE_INT
)
1714 emit(nir_op_ige
, dest_size
, srcs
[1], srcs
[0]);
1716 emit(nir_op_uge
, dest_size
, srcs
[1], srcs
[0]);
1718 emit(nir_op_slt
, dest_size
, srcs
[1], srcs
[0]);
1721 case ir_binop_gequal
:
1722 if (supports_ints
) {
1723 if (types
[0] == GLSL_TYPE_FLOAT
)
1724 emit(nir_op_fge
, dest_size
, srcs
);
1725 else if (types
[0] == GLSL_TYPE_INT
)
1726 emit(nir_op_ige
, dest_size
, srcs
);
1728 emit(nir_op_uge
, dest_size
, srcs
);
1730 emit(nir_op_slt
, dest_size
, srcs
);
1733 case ir_binop_equal
:
1734 if (supports_ints
) {
1735 if (types
[0] == GLSL_TYPE_FLOAT
)
1736 emit(nir_op_feq
, dest_size
, srcs
);
1738 emit(nir_op_ieq
, dest_size
, srcs
);
1740 emit(nir_op_seq
, dest_size
, srcs
);
1743 case ir_binop_nequal
:
1744 if (supports_ints
) {
1745 if (types
[0] == GLSL_TYPE_FLOAT
)
1746 emit(nir_op_fne
, dest_size
, srcs
);
1748 emit(nir_op_ine
, dest_size
, srcs
);
1750 emit(nir_op_sne
, dest_size
, srcs
);
1753 case ir_binop_all_equal
:
1754 if (supports_ints
) {
1755 if (types
[0] == GLSL_TYPE_FLOAT
) {
1756 switch (ir
->operands
[0]->type
->vector_elements
) {
1757 case 1: emit(nir_op_feq
, dest_size
, srcs
); break;
1758 case 2: emit(nir_op_ball_fequal2
, dest_size
, srcs
); break;
1759 case 3: emit(nir_op_ball_fequal3
, dest_size
, srcs
); break;
1760 case 4: emit(nir_op_ball_fequal4
, dest_size
, srcs
); break;
1762 unreachable("not reached");
1765 switch (ir
->operands
[0]->type
->vector_elements
) {
1766 case 1: emit(nir_op_ieq
, dest_size
, srcs
); break;
1767 case 2: emit(nir_op_ball_iequal2
, dest_size
, srcs
); break;
1768 case 3: emit(nir_op_ball_iequal3
, dest_size
, srcs
); break;
1769 case 4: emit(nir_op_ball_iequal4
, dest_size
, srcs
); break;
1771 unreachable("not reached");
1775 switch (ir
->operands
[0]->type
->vector_elements
) {
1776 case 1: emit(nir_op_seq
, dest_size
, srcs
); break;
1777 case 2: emit(nir_op_fall_equal2
, dest_size
, srcs
); break;
1778 case 3: emit(nir_op_fall_equal3
, dest_size
, srcs
); break;
1779 case 4: emit(nir_op_fall_equal4
, dest_size
, srcs
); break;
1781 unreachable("not reached");
1785 case ir_binop_any_nequal
:
1786 if (supports_ints
) {
1787 if (types
[0] == GLSL_TYPE_FLOAT
) {
1788 switch (ir
->operands
[0]->type
->vector_elements
) {
1789 case 1: emit(nir_op_fne
, dest_size
, srcs
); break;
1790 case 2: emit(nir_op_bany_fnequal2
, dest_size
, srcs
); break;
1791 case 3: emit(nir_op_bany_fnequal3
, dest_size
, srcs
); break;
1792 case 4: emit(nir_op_bany_fnequal4
, dest_size
, srcs
); break;
1794 unreachable("not reached");
1797 switch (ir
->operands
[0]->type
->vector_elements
) {
1798 case 1: emit(nir_op_ine
, dest_size
, srcs
); break;
1799 case 2: emit(nir_op_bany_inequal2
, dest_size
, srcs
); break;
1800 case 3: emit(nir_op_bany_inequal3
, dest_size
, srcs
); break;
1801 case 4: emit(nir_op_bany_inequal4
, dest_size
, srcs
); break;
1803 unreachable("not reached");
1807 switch (ir
->operands
[0]->type
->vector_elements
) {
1808 case 1: emit(nir_op_sne
, dest_size
, srcs
); break;
1809 case 2: emit(nir_op_fany_nequal2
, dest_size
, srcs
); break;
1810 case 3: emit(nir_op_fany_nequal3
, dest_size
, srcs
); break;
1811 case 4: emit(nir_op_fany_nequal4
, dest_size
, srcs
); break;
1813 unreachable("not reached");
1818 switch (ir
->operands
[0]->type
->vector_elements
) {
1819 case 2: emit(nir_op_fdot2
, dest_size
, srcs
); break;
1820 case 3: emit(nir_op_fdot3
, dest_size
, srcs
); break;
1821 case 4: emit(nir_op_fdot4
, dest_size
, srcs
); break;
1823 unreachable("not reached");
1827 case ir_binop_pack_half_2x16_split
:
1828 emit(nir_op_pack_half_2x16_split
, dest_size
, srcs
);
1830 case ir_binop_bfm
: emit(nir_op_bfm
, dest_size
, srcs
); break;
1831 case ir_binop_ldexp
: emit(nir_op_ldexp
, dest_size
, srcs
); break;
1832 case ir_triop_fma
: emit(nir_op_ffma
, dest_size
, srcs
); break;
1834 instr
= emit(nir_op_flrp
, dest_size
, srcs
);
1835 if (ir
->operands
[0]->type
->vector_elements
!= 1 &&
1836 ir
->operands
[2]->type
->vector_elements
== 1) {
1837 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
;
1839 instr
->src
[2].swizzle
[i
] = 0;
1845 emit(nir_op_bcsel
, dest_size
, srcs
);
1847 emit(nir_op_fcsel
, dest_size
, srcs
);
1850 instr
= emit(nir_op_bfi
, dest_size
, srcs
);
1851 for (unsigned i
= 0; i
< ir
->operands
[1]->type
->vector_elements
; i
++) {
1852 instr
->src
[0].swizzle
[i
] = 0;
1855 case ir_triop_bitfield_extract
:
1856 instr
= emit(out_type
== GLSL_TYPE_INT
? nir_op_ibitfield_extract
:
1857 nir_op_ubitfield_extract
, dest_size
, srcs
);
1858 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1859 instr
->src
[1].swizzle
[i
] = 0;
1860 instr
->src
[2].swizzle
[i
] = 0;
1863 case ir_quadop_bitfield_insert
:
1864 instr
= emit(nir_op_bitfield_insert
, dest_size
, srcs
);
1865 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1866 instr
->src
[2].swizzle
[i
] = 0;
1867 instr
->src
[3].swizzle
[i
] = 0;
1870 case ir_quadop_vector
:
1871 switch (ir
->type
->vector_elements
) {
1872 case 2: emit(nir_op_vec2
, dest_size
, srcs
); break;
1873 case 3: emit(nir_op_vec3
, dest_size
, srcs
); break;
1874 case 4: emit(nir_op_vec4
, dest_size
, srcs
); break;
1875 default: unreachable("not reached");
1880 unreachable("not reached");
1885 nir_visitor::visit(ir_swizzle
*ir
)
1887 nir_alu_instr
*instr
= emit(supports_ints
? nir_op_imov
: nir_op_fmov
,
1888 ir
->type
->vector_elements
,
1889 evaluate_rvalue(ir
->val
));
1891 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1892 for (unsigned i
= 0; i
< ir
->type
->vector_elements
; i
++)
1893 instr
->src
[0].swizzle
[i
] = swizzle
[i
];
1897 nir_visitor::visit(ir_texture
*ir
)
1904 num_srcs
= 1; /* coordinate */
1909 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1910 num_srcs
= 2; /* coordinate, bias/lod */
1914 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1920 if (ir
->lod_info
.lod
!= NULL
)
1921 num_srcs
= 2; /* coordinate, lod */
1923 num_srcs
= 1; /* coordinate */
1927 op
= nir_texop_txf_ms
;
1928 num_srcs
= 2; /* coordinate, sample_index */
1933 if (ir
->lod_info
.lod
!= NULL
)
1934 num_srcs
= 1; /* lod */
1941 num_srcs
= 1; /* coordinate */
1946 num_srcs
= 1; /* coordinate */
1949 case ir_query_levels
:
1950 op
= nir_texop_query_levels
;
1954 case ir_texture_samples
:
1955 op
= nir_texop_texture_samples
;
1960 unreachable("not reached");
1963 if (ir
->projector
!= NULL
)
1965 if (ir
->shadow_comparitor
!= NULL
)
1967 if (ir
->offset
!= NULL
&& ir
->offset
->as_constant() == NULL
)
1970 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
1973 instr
->sampler_dim
=
1974 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
1975 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
1976 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
1977 if (instr
->is_shadow
)
1978 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
1979 switch (ir
->type
->base_type
) {
1980 case GLSL_TYPE_FLOAT
:
1981 instr
->dest_type
= nir_type_float
;
1984 instr
->dest_type
= nir_type_int
;
1986 case GLSL_TYPE_UINT
:
1987 instr
->dest_type
= nir_type_unsigned
;
1990 unreachable("not reached");
1993 instr
->sampler
= evaluate_deref(&instr
->instr
, ir
->sampler
);
1995 unsigned src_number
= 0;
1997 if (ir
->coordinate
!= NULL
) {
1998 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
1999 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->coordinate
);
2000 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2004 if (ir
->projector
!= NULL
) {
2005 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->projector
);
2006 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2010 if (ir
->shadow_comparitor
!= NULL
) {
2011 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->shadow_comparitor
);
2012 instr
->src
[src_number
].src_type
= nir_tex_src_comparitor
;
2016 if (ir
->offset
!= NULL
) {
2017 /* we don't support multiple offsets yet */
2018 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2020 ir_constant
*const_offset
= ir
->offset
->as_constant();
2021 if (const_offset
!= NULL
) {
2022 for (unsigned i
= 0; i
< const_offset
->type
->vector_elements
; i
++)
2023 instr
->const_offset
[i
] = const_offset
->value
.i
[i
];
2025 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->offset
);
2026 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2033 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.bias
);
2034 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2041 if (ir
->lod_info
.lod
!= NULL
) {
2042 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.lod
);
2043 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2049 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.grad
.dPdx
);
2050 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2052 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.grad
.dPdy
);
2053 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2058 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.sample_index
);
2059 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2064 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2071 assert(src_number
== num_srcs
);
2073 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
));
2077 nir_visitor::visit(ir_constant
*ir
)
2080 * We don't know if this variable is an an array or struct that gets
2081 * dereferenced, so do the safe thing an make it a variable with a
2082 * constant initializer and return a dereference.
2086 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2087 var
->data
.read_only
= true;
2088 var
->constant_initializer
= constant_copy(ir
, var
);
2090 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2091 this->deref_tail
= &this->deref_head
->deref
;
2095 nir_visitor::visit(ir_dereference_variable
*ir
)
2097 struct hash_entry
*entry
=
2098 _mesa_hash_table_search(this->var_table
, ir
->var
);
2100 nir_variable
*var
= (nir_variable
*) entry
->data
;
2102 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2103 this->deref_head
= deref
;
2104 this->deref_tail
= &deref
->deref
;
2108 nir_visitor::visit(ir_dereference_record
*ir
)
2110 ir
->record
->accept(this);
2112 int field_index
= this->deref_tail
->type
->field_index(ir
->field
);
2113 assert(field_index
>= 0);
2115 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2116 deref
->deref
.type
= ir
->type
;
2117 this->deref_tail
->child
= &deref
->deref
;
2118 this->deref_tail
= &deref
->deref
;
2122 nir_visitor::visit(ir_dereference_array
*ir
)
2124 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2125 deref
->deref
.type
= ir
->type
;
2127 ir_constant
*const_index
= ir
->array_index
->as_constant();
2128 if (const_index
!= NULL
) {
2129 deref
->deref_array_type
= nir_deref_array_type_direct
;
2130 deref
->base_offset
= const_index
->value
.u
[0];
2132 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2133 deref
->indirect
= evaluate_rvalue(ir
->array_index
);
2136 ir
->array
->accept(this);
2138 this->deref_tail
->child
= &deref
->deref
;
2139 ralloc_steal(this->deref_tail
, deref
);
2140 this->deref_tail
= &deref
->deref
;
2144 nir_visitor::visit(ir_barrier
*ir
)
2146 nir_intrinsic_instr
*instr
=
2147 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2148 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);