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_ssa_def
*evaluate_rvalue(ir_rvalue
*ir
);
78 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
**srcs
);
79 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
);
80 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
82 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
83 nir_ssa_def
*src2
, nir_ssa_def
*src3
);
88 nir_function_impl
*impl
;
89 exec_list
*cf_node_list
;
90 nir_ssa_def
*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
.patch_inputs_read
= sh
->Program
->PatchInputsRead
;
164 shader
->info
.patch_outputs_written
= sh
->Program
->PatchOutputsWritten
;
165 shader
->info
.system_values_read
= sh
->Program
->SystemValuesRead
;
166 shader
->info
.uses_texture_gather
= sh
->Program
->UsesGather
;
167 shader
->info
.uses_clip_distance_out
=
168 sh
->Program
->ClipDistanceArraySize
!= 0;
169 shader
->info
.separate_shader
= shader_prog
->SeparateShader
;
170 shader
->info
.has_transform_feedback_varyings
=
171 shader_prog
->TransformFeedback
.NumVarying
> 0;
174 case MESA_SHADER_GEOMETRY
:
175 shader
->info
.gs
.vertices_in
= shader_prog
->Geom
.VerticesIn
;
176 shader
->info
.gs
.output_primitive
= sh
->Geom
.OutputType
;
177 shader
->info
.gs
.vertices_out
= sh
->Geom
.VerticesOut
;
178 shader
->info
.gs
.invocations
= sh
->Geom
.Invocations
;
179 shader
->info
.gs
.uses_end_primitive
= shader_prog
->Geom
.UsesEndPrimitive
;
180 shader
->info
.gs
.uses_streams
= shader_prog
->Geom
.UsesStreams
;
183 case MESA_SHADER_FRAGMENT
: {
184 struct gl_fragment_program
*fp
=
185 (struct gl_fragment_program
*)sh
->Program
;
187 shader
->info
.fs
.uses_discard
= fp
->UsesKill
;
188 shader
->info
.fs
.early_fragment_tests
= sh
->EarlyFragmentTests
;
189 shader
->info
.fs
.depth_layout
= fp
->FragDepthLayout
;
193 case MESA_SHADER_COMPUTE
: {
194 struct gl_compute_program
*cp
= (struct gl_compute_program
*)sh
->Program
;
195 shader
->info
.cs
.local_size
[0] = cp
->LocalSize
[0];
196 shader
->info
.cs
.local_size
[1] = cp
->LocalSize
[1];
197 shader
->info
.cs
.local_size
[2] = cp
->LocalSize
[2];
202 break; /* No stage-specific info */
208 nir_visitor::nir_visitor(nir_shader
*shader
)
210 this->supports_ints
= shader
->options
->native_integers
;
211 this->shader
= shader
;
212 this->is_global
= true;
213 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
214 _mesa_key_pointer_equal
);
215 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
216 _mesa_key_pointer_equal
);
219 nir_visitor::~nir_visitor()
221 _mesa_hash_table_destroy(this->var_table
, NULL
);
222 _mesa_hash_table_destroy(this->overload_table
, NULL
);
226 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
229 ralloc_steal(mem_ctx
, this->deref_head
);
230 return this->deref_head
;
233 static nir_constant
*
234 constant_copy(ir_constant
*ir
, void *mem_ctx
)
239 nir_constant
*ret
= ralloc(mem_ctx
, nir_constant
);
241 unsigned total_elems
= ir
->type
->components();
243 switch (ir
->type
->base_type
) {
245 for (i
= 0; i
< total_elems
; i
++)
246 ret
->value
.u
[i
] = ir
->value
.u
[i
];
250 for (i
= 0; i
< total_elems
; i
++)
251 ret
->value
.i
[i
] = ir
->value
.i
[i
];
254 case GLSL_TYPE_FLOAT
:
255 for (i
= 0; i
< total_elems
; i
++)
256 ret
->value
.f
[i
] = ir
->value
.f
[i
];
260 for (i
= 0; i
< total_elems
; i
++)
261 ret
->value
.b
[i
] = ir
->value
.b
[i
];
264 case GLSL_TYPE_STRUCT
:
265 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
268 foreach_in_list(ir_constant
, field
, &ir
->components
) {
269 ret
->elements
[i
] = constant_copy(field
, mem_ctx
);
274 case GLSL_TYPE_ARRAY
:
275 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
278 for (i
= 0; i
< ir
->type
->length
; i
++)
279 ret
->elements
[i
] = constant_copy(ir
->array_elements
[i
], mem_ctx
);
283 unreachable("not reached");
290 nir_visitor::visit(ir_variable
*ir
)
292 nir_variable
*var
= ralloc(shader
, nir_variable
);
293 var
->type
= ir
->type
;
294 var
->name
= ralloc_strdup(var
, ir
->name
);
296 if (ir
->is_interface_instance() && ir
->get_max_ifc_array_access() != NULL
) {
297 unsigned size
= ir
->get_interface_type()->length
;
298 var
->max_ifc_array_access
= ralloc_array(var
, unsigned, size
);
299 memcpy(var
->max_ifc_array_access
, ir
->get_max_ifc_array_access(),
300 size
* sizeof(unsigned));
302 var
->max_ifc_array_access
= NULL
;
305 var
->data
.read_only
= ir
->data
.read_only
;
306 var
->data
.centroid
= ir
->data
.centroid
;
307 var
->data
.sample
= ir
->data
.sample
;
308 var
->data
.patch
= ir
->data
.patch
;
309 var
->data
.invariant
= ir
->data
.invariant
;
310 var
->data
.location
= ir
->data
.location
;
312 switch(ir
->data
.mode
) {
314 case ir_var_temporary
:
316 var
->data
.mode
= nir_var_global
;
318 var
->data
.mode
= nir_var_local
;
321 case ir_var_function_in
:
322 case ir_var_function_out
:
323 case ir_var_function_inout
:
324 case ir_var_const_in
:
325 var
->data
.mode
= nir_var_local
;
328 case ir_var_shader_in
:
329 if (shader
->stage
== MESA_SHADER_FRAGMENT
&&
330 ir
->data
.location
== VARYING_SLOT_FACE
) {
331 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
332 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
333 var
->data
.mode
= nir_var_system_value
;
334 } else if (shader
->stage
== MESA_SHADER_GEOMETRY
&&
335 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
336 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
337 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
338 var
->data
.mode
= nir_var_system_value
;
340 var
->data
.mode
= nir_var_shader_in
;
344 case ir_var_shader_out
:
345 var
->data
.mode
= nir_var_shader_out
;
349 var
->data
.mode
= nir_var_uniform
;
352 case ir_var_shader_storage
:
353 var
->data
.mode
= nir_var_shader_storage
;
356 case ir_var_system_value
:
357 var
->data
.mode
= nir_var_system_value
;
361 unreachable("not reached");
364 var
->data
.interpolation
= ir
->data
.interpolation
;
365 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
366 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
367 var
->data
.explicit_location
= ir
->data
.explicit_location
;
368 var
->data
.explicit_index
= ir
->data
.explicit_index
;
369 var
->data
.explicit_binding
= ir
->data
.explicit_binding
;
370 var
->data
.has_initializer
= ir
->data
.has_initializer
;
371 var
->data
.is_unmatched_generic_inout
= ir
->data
.is_unmatched_generic_inout
;
372 var
->data
.location_frac
= ir
->data
.location_frac
;
373 var
->data
.from_named_ifc_block_array
= ir
->data
.from_named_ifc_block_array
;
374 var
->data
.from_named_ifc_block_nonarray
= ir
->data
.from_named_ifc_block_nonarray
;
376 switch (ir
->data
.depth_layout
) {
377 case ir_depth_layout_none
:
378 var
->data
.depth_layout
= nir_depth_layout_none
;
380 case ir_depth_layout_any
:
381 var
->data
.depth_layout
= nir_depth_layout_any
;
383 case ir_depth_layout_greater
:
384 var
->data
.depth_layout
= nir_depth_layout_greater
;
386 case ir_depth_layout_less
:
387 var
->data
.depth_layout
= nir_depth_layout_less
;
389 case ir_depth_layout_unchanged
:
390 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
393 unreachable("not reached");
396 var
->data
.index
= ir
->data
.index
;
397 var
->data
.binding
= ir
->data
.binding
;
398 var
->data
.atomic
.offset
= ir
->data
.atomic
.offset
;
399 var
->data
.image
.read_only
= ir
->data
.image_read_only
;
400 var
->data
.image
.write_only
= ir
->data
.image_write_only
;
401 var
->data
.image
.coherent
= ir
->data
.image_coherent
;
402 var
->data
.image
._volatile
= ir
->data
.image_volatile
;
403 var
->data
.image
.restrict_flag
= ir
->data
.image_restrict
;
404 var
->data
.image
.format
= ir
->data
.image_format
;
405 var
->data
.max_array_access
= ir
->data
.max_array_access
;
407 var
->num_state_slots
= ir
->get_num_state_slots();
408 if (var
->num_state_slots
> 0) {
409 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
410 var
->num_state_slots
);
412 ir_state_slot
*state_slots
= ir
->get_state_slots();
413 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
414 for (unsigned j
= 0; j
< 5; j
++)
415 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
416 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
419 var
->state_slots
= NULL
;
422 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
424 var
->interface_type
= ir
->get_interface_type();
426 if (var
->data
.mode
== nir_var_local
)
427 nir_function_impl_add_variable(impl
, var
);
429 nir_shader_add_variable(shader
, var
);
431 _mesa_hash_table_insert(var_table
, ir
, var
);
436 nir_function_visitor::visit_enter(ir_function
*ir
)
438 visitor
->create_function(ir
);
439 return visit_continue_with_parent
;
444 nir_visitor::create_function(ir_function
*ir
)
446 nir_function
*func
= nir_function_create(this->shader
, ir
->name
);
447 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
448 create_overload(sig
, func
);
455 nir_visitor::create_overload(ir_function_signature
*ir
, nir_function
*function
)
457 if (ir
->is_intrinsic
)
460 nir_function_overload
*overload
= nir_function_overload_create(function
);
462 unsigned num_params
= ir
->parameters
.length();
463 overload
->num_params
= num_params
;
464 overload
->params
= ralloc_array(shader
, nir_parameter
, num_params
);
467 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
468 switch (param
->data
.mode
) {
469 case ir_var_function_in
:
470 overload
->params
[i
].param_type
= nir_parameter_in
;
473 case ir_var_function_out
:
474 overload
->params
[i
].param_type
= nir_parameter_out
;
477 case ir_var_function_inout
:
478 overload
->params
[i
].param_type
= nir_parameter_inout
;
482 unreachable("not reached");
485 overload
->params
[i
].type
= param
->type
;
489 overload
->return_type
= ir
->return_type
;
491 _mesa_hash_table_insert(this->overload_table
, ir
, overload
);
495 nir_visitor::visit(ir_function
*ir
)
497 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
502 nir_visitor::visit(ir_function_signature
*ir
)
504 if (ir
->is_intrinsic
)
507 struct hash_entry
*entry
=
508 _mesa_hash_table_search(this->overload_table
, ir
);
511 nir_function_overload
*overload
= (nir_function_overload
*) entry
->data
;
513 if (ir
->is_defined
) {
514 nir_function_impl
*impl
= nir_function_impl_create(overload
);
517 unsigned num_params
= overload
->num_params
;
518 impl
->num_params
= num_params
;
519 impl
->params
= ralloc_array(this->shader
, nir_variable
*, num_params
);
521 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
523 impl
->params
[i
] = this->var
;
527 if (overload
->return_type
== glsl_type::void_type
) {
528 impl
->return_var
= NULL
;
530 impl
->return_var
= ralloc(this->shader
, nir_variable
);
531 impl
->return_var
->name
= ralloc_strdup(impl
->return_var
,
533 impl
->return_var
->type
= overload
->return_type
;
536 this->is_global
= false;
538 this->cf_node_list
= &impl
->body
;
539 visit_exec_list(&ir
->body
, this);
541 this->is_global
= true;
543 overload
->impl
= NULL
;
548 nir_visitor::visit(ir_loop
*ir
)
550 exec_list
*old_list
= this->cf_node_list
;
552 nir_loop
*loop
= nir_loop_create(this->shader
);
553 nir_cf_node_insert_end(old_list
, &loop
->cf_node
);
554 this->cf_node_list
= &loop
->body
;
555 visit_exec_list(&ir
->body_instructions
, this);
557 this->cf_node_list
= old_list
;
561 nir_visitor::visit(ir_if
*ir
)
564 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
566 exec_list
*old_list
= this->cf_node_list
;
568 nir_if
*if_stmt
= nir_if_create(this->shader
);
569 if_stmt
->condition
= condition
;
570 nir_cf_node_insert_end(old_list
, &if_stmt
->cf_node
);
572 this->cf_node_list
= &if_stmt
->then_list
;
573 visit_exec_list(&ir
->then_instructions
, this);
575 this->cf_node_list
= &if_stmt
->else_list
;
576 visit_exec_list(&ir
->else_instructions
, this);
578 this->cf_node_list
= old_list
;
582 nir_visitor::visit(ir_discard
*ir
)
585 * discards aren't treated as control flow, because before we lower them
586 * they can appear anywhere in the shader and the stuff after them may still
587 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
588 * discards will be immediately followed by a return.
591 nir_intrinsic_instr
*discard
;
593 discard
= nir_intrinsic_instr_create(this->shader
,
594 nir_intrinsic_discard_if
);
596 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
598 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
600 nir_instr_insert_after_cf_list(this->cf_node_list
, &discard
->instr
);
604 nir_visitor::visit(ir_emit_vertex
*ir
)
606 nir_intrinsic_instr
*instr
=
607 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
608 instr
->const_index
[0] = ir
->stream_id();
609 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
613 nir_visitor::visit(ir_end_primitive
*ir
)
615 nir_intrinsic_instr
*instr
=
616 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
617 instr
->const_index
[0] = ir
->stream_id();
618 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
622 nir_visitor::visit(ir_loop_jump
*ir
)
626 case ir_loop_jump::jump_break
:
627 type
= nir_jump_break
;
629 case ir_loop_jump::jump_continue
:
630 type
= nir_jump_continue
;
633 unreachable("not reached");
636 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
637 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
641 nir_visitor::visit(ir_return
*ir
)
643 if (ir
->value
!= NULL
) {
644 nir_intrinsic_instr
*copy
=
645 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
647 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
648 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
651 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
652 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
656 nir_visitor::visit(ir_call
*ir
)
658 if (ir
->callee
->is_intrinsic
) {
660 if (strcmp(ir
->callee_name(), "__intrinsic_atomic_read") == 0) {
661 op
= nir_intrinsic_atomic_counter_read_var
;
662 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_increment") == 0) {
663 op
= nir_intrinsic_atomic_counter_inc_var
;
664 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_predecrement") == 0) {
665 op
= nir_intrinsic_atomic_counter_dec_var
;
666 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_load") == 0) {
667 op
= nir_intrinsic_image_load
;
668 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_store") == 0) {
669 op
= nir_intrinsic_image_store
;
670 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_add") == 0) {
671 op
= nir_intrinsic_image_atomic_add
;
672 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_min") == 0) {
673 op
= nir_intrinsic_image_atomic_min
;
674 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_max") == 0) {
675 op
= nir_intrinsic_image_atomic_max
;
676 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_and") == 0) {
677 op
= nir_intrinsic_image_atomic_and
;
678 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_or") == 0) {
679 op
= nir_intrinsic_image_atomic_or
;
680 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_xor") == 0) {
681 op
= nir_intrinsic_image_atomic_xor
;
682 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_exchange") == 0) {
683 op
= nir_intrinsic_image_atomic_exchange
;
684 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_comp_swap") == 0) {
685 op
= nir_intrinsic_image_atomic_comp_swap
;
686 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier") == 0) {
687 op
= nir_intrinsic_memory_barrier
;
688 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_size") == 0) {
689 op
= nir_intrinsic_image_size
;
690 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_samples") == 0) {
691 op
= nir_intrinsic_image_samples
;
692 } else if (strcmp(ir
->callee_name(), "__intrinsic_store_ssbo") == 0) {
693 op
= nir_intrinsic_store_ssbo
;
694 } else if (strcmp(ir
->callee_name(), "__intrinsic_load_ssbo") == 0) {
695 op
= nir_intrinsic_load_ssbo
;
696 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_add_internal") == 0) {
697 op
= nir_intrinsic_ssbo_atomic_add
;
698 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_and_internal") == 0) {
699 op
= nir_intrinsic_ssbo_atomic_and
;
700 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_or_internal") == 0) {
701 op
= nir_intrinsic_ssbo_atomic_or
;
702 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_xor_internal") == 0) {
703 op
= nir_intrinsic_ssbo_atomic_xor
;
704 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_min_internal") == 0) {
705 assert(ir
->return_deref
);
706 if (ir
->return_deref
->type
== glsl_type::int_type
)
707 op
= nir_intrinsic_ssbo_atomic_imin
;
708 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
709 op
= nir_intrinsic_ssbo_atomic_umin
;
711 unreachable("Invalid type");
712 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_max_internal") == 0) {
713 assert(ir
->return_deref
);
714 if (ir
->return_deref
->type
== glsl_type::int_type
)
715 op
= nir_intrinsic_ssbo_atomic_imax
;
716 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
717 op
= nir_intrinsic_ssbo_atomic_umax
;
719 unreachable("Invalid type");
720 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_exchange_internal") == 0) {
721 op
= nir_intrinsic_ssbo_atomic_exchange
;
722 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_comp_swap_internal") == 0) {
723 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
724 } else if (strcmp(ir
->callee_name(), "__intrinsic_shader_clock") == 0) {
725 op
= nir_intrinsic_shader_clock
;
726 } else if (strcmp(ir
->callee_name(), "__intrinsic_group_memory_barrier") == 0) {
727 op
= nir_intrinsic_group_memory_barrier
;
728 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier_atomic_counter") == 0) {
729 op
= nir_intrinsic_memory_barrier_atomic_counter
;
730 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier_buffer") == 0) {
731 op
= nir_intrinsic_memory_barrier_buffer
;
732 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier_image") == 0) {
733 op
= nir_intrinsic_memory_barrier_image
;
734 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier_shared") == 0) {
735 op
= nir_intrinsic_memory_barrier_shared
;
737 unreachable("not reached");
740 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
741 nir_dest
*dest
= &instr
->dest
;
744 case nir_intrinsic_atomic_counter_read_var
:
745 case nir_intrinsic_atomic_counter_inc_var
:
746 case nir_intrinsic_atomic_counter_dec_var
: {
747 ir_dereference
*param
=
748 (ir_dereference
*) ir
->actual_parameters
.get_head();
749 instr
->variables
[0] = evaluate_deref(&instr
->instr
, param
);
750 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, NULL
);
751 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
754 case nir_intrinsic_image_load
:
755 case nir_intrinsic_image_store
:
756 case nir_intrinsic_image_atomic_add
:
757 case nir_intrinsic_image_atomic_min
:
758 case nir_intrinsic_image_atomic_max
:
759 case nir_intrinsic_image_atomic_and
:
760 case nir_intrinsic_image_atomic_or
:
761 case nir_intrinsic_image_atomic_xor
:
762 case nir_intrinsic_image_atomic_exchange
:
763 case nir_intrinsic_image_atomic_comp_swap
:
764 case nir_intrinsic_image_samples
:
765 case nir_intrinsic_image_size
: {
766 nir_ssa_undef_instr
*instr_undef
=
767 nir_ssa_undef_instr_create(shader
, 1);
768 nir_instr_insert_after_cf_list(this->cf_node_list
,
769 &instr_undef
->instr
);
771 /* Set the image variable dereference. */
772 exec_node
*param
= ir
->actual_parameters
.get_head();
773 ir_dereference
*image
= (ir_dereference
*)param
;
774 const glsl_type
*type
=
775 image
->variable_referenced()->type
->without_array();
777 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
778 param
= param
->get_next();
780 /* Set the intrinsic destination. */
781 if (ir
->return_deref
) {
782 const nir_intrinsic_info
*info
=
783 &nir_intrinsic_infos
[instr
->intrinsic
];
784 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
785 info
->dest_components
, NULL
);
788 if (op
== nir_intrinsic_image_size
||
789 op
== nir_intrinsic_image_samples
) {
790 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
794 /* Set the address argument, extending the coordinate vector to four
797 const nir_src src_addr
=
798 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
799 nir_alu_instr
*instr_addr
= nir_alu_instr_create(shader
, nir_op_vec4
);
800 nir_ssa_dest_init(&instr_addr
->instr
, &instr_addr
->dest
.dest
, 4, NULL
);
802 for (int i
= 0; i
< 4; i
++) {
803 if (i
< type
->coordinate_components()) {
804 instr_addr
->src
[i
].src
= src_addr
;
805 instr_addr
->src
[i
].swizzle
[0] = i
;
807 instr_addr
->src
[i
].src
= nir_src_for_ssa(&instr_undef
->def
);
811 nir_instr_insert_after_cf_list(cf_node_list
, &instr_addr
->instr
);
812 instr
->src
[0] = nir_src_for_ssa(&instr_addr
->dest
.dest
.ssa
);
813 param
= param
->get_next();
815 /* Set the sample argument, which is undefined for single-sample
818 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
820 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
821 param
= param
->get_next();
823 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
826 /* Set the intrinsic parameters. */
827 if (!param
->is_tail_sentinel()) {
829 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
830 param
= param
->get_next();
833 if (!param
->is_tail_sentinel()) {
835 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
836 param
= param
->get_next();
838 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
841 case nir_intrinsic_memory_barrier
:
842 case nir_intrinsic_group_memory_barrier
:
843 case nir_intrinsic_memory_barrier_atomic_counter
:
844 case nir_intrinsic_memory_barrier_buffer
:
845 case nir_intrinsic_memory_barrier_image
:
846 case nir_intrinsic_memory_barrier_shared
:
847 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
849 case nir_intrinsic_shader_clock
:
850 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, NULL
);
851 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
853 case nir_intrinsic_store_ssbo
: {
854 exec_node
*param
= ir
->actual_parameters
.get_head();
855 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
857 param
= param
->get_next();
858 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
860 param
= param
->get_next();
861 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
863 param
= param
->get_next();
864 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
867 /* Check if we need the indirect version */
868 ir_constant
*const_offset
= offset
->as_constant();
870 op
= nir_intrinsic_store_ssbo_indirect
;
872 instr
= nir_intrinsic_instr_create(shader
, op
);
873 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
874 instr
->const_index
[0] = 0;
876 instr
->const_index
[0] = const_offset
->value
.u
[0];
879 instr
->const_index
[1] = write_mask
->value
.u
[0];
881 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
882 instr
->num_components
= val
->type
->vector_elements
;
884 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
885 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
888 case nir_intrinsic_load_ssbo
: {
889 exec_node
*param
= ir
->actual_parameters
.get_head();
890 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
892 param
= param
->get_next();
893 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
895 /* Check if we need the indirect version */
896 ir_constant
*const_offset
= offset
->as_constant();
898 op
= nir_intrinsic_load_ssbo_indirect
;
900 instr
= nir_intrinsic_instr_create(shader
, op
);
901 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
902 instr
->const_index
[0] = 0;
905 instr
->const_index
[0] = const_offset
->value
.u
[0];
908 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
910 const glsl_type
*type
= ir
->return_deref
->var
->type
;
911 instr
->num_components
= type
->vector_elements
;
913 /* Setup destination register */
914 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
915 type
->vector_elements
, NULL
);
917 /* Insert the created nir instruction now since in the case of boolean
918 * result we will need to emit another instruction after it
920 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
923 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
924 * consider a true boolean to be ~0. Fix this up with a != 0
927 if (type
->base_type
== GLSL_TYPE_BOOL
) {
928 nir_load_const_instr
*const_zero
=
929 nir_load_const_instr_create(shader
, 1);
930 const_zero
->value
.u
[0] = 0;
931 nir_instr_insert_after_cf_list(this->cf_node_list
,
934 nir_alu_instr
*load_ssbo_compare
=
935 nir_alu_instr_create(shader
, nir_op_ine
);
936 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
937 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
938 load_ssbo_compare
->src
[1].src
.is_ssa
= true;
939 load_ssbo_compare
->src
[1].src
.ssa
= &const_zero
->def
;
940 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
941 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
942 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
943 &load_ssbo_compare
->dest
.dest
,
944 type
->vector_elements
, NULL
);
945 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
946 nir_instr_insert_after_cf_list(this->cf_node_list
,
947 &load_ssbo_compare
->instr
);
948 dest
= &load_ssbo_compare
->dest
.dest
;
952 case nir_intrinsic_ssbo_atomic_add
:
953 case nir_intrinsic_ssbo_atomic_imin
:
954 case nir_intrinsic_ssbo_atomic_umin
:
955 case nir_intrinsic_ssbo_atomic_imax
:
956 case nir_intrinsic_ssbo_atomic_umax
:
957 case nir_intrinsic_ssbo_atomic_and
:
958 case nir_intrinsic_ssbo_atomic_or
:
959 case nir_intrinsic_ssbo_atomic_xor
:
960 case nir_intrinsic_ssbo_atomic_exchange
:
961 case nir_intrinsic_ssbo_atomic_comp_swap
: {
962 int param_count
= ir
->actual_parameters
.length();
963 assert(param_count
== 3 || param_count
== 4);
966 exec_node
*param
= ir
->actual_parameters
.get_head();
967 ir_instruction
*inst
= (ir_instruction
*) param
;
968 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
971 param
= param
->get_next();
972 inst
= (ir_instruction
*) param
;
973 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
975 /* data1 parameter (this is always present) */
976 param
= param
->get_next();
977 inst
= (ir_instruction
*) param
;
978 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
980 /* data2 parameter (only with atomic_comp_swap) */
981 if (param_count
== 4) {
982 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
983 param
= param
->get_next();
984 inst
= (ir_instruction
*) param
;
985 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
989 assert(ir
->return_deref
);
990 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
991 ir
->return_deref
->type
->vector_elements
, NULL
);
992 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
996 unreachable("not reached");
999 if (ir
->return_deref
) {
1000 nir_intrinsic_instr
*store_instr
=
1001 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
1002 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1004 store_instr
->variables
[0] =
1005 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
1006 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
1008 nir_instr_insert_after_cf_list(this->cf_node_list
,
1009 &store_instr
->instr
);
1015 struct hash_entry
*entry
=
1016 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1018 nir_function_overload
*callee
= (nir_function_overload
*) entry
->data
;
1020 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
1023 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
1024 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
1028 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
1029 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
1033 nir_visitor::visit(ir_assignment
*ir
)
1035 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1037 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1038 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1039 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1040 nir_intrinsic_instr
*copy
=
1041 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1043 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1044 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1046 if (ir
->condition
) {
1047 nir_if
*if_stmt
= nir_if_create(this->shader
);
1048 if_stmt
->condition
= nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
1049 nir_cf_node_insert_end(this->cf_node_list
, &if_stmt
->cf_node
);
1050 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, ©
->instr
);
1052 nir_instr_insert_after_cf_list(this->cf_node_list
, ©
->instr
);
1057 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1059 ir
->lhs
->accept(this);
1060 nir_deref_var
*lhs_deref
= this->deref_head
;
1061 nir_src src
= nir_src_for_ssa(evaluate_rvalue(ir
->rhs
));
1063 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1065 * We have no good way to update only part of a variable, so just load
1066 * the LHS and do a vec operation to combine the old with the new, and
1068 * back into the LHS. Copy propagation should get rid of the mess.
1071 nir_intrinsic_instr
*load
=
1072 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1073 load
->num_components
= ir
->lhs
->type
->vector_elements
;
1074 nir_ssa_dest_init(&load
->instr
, &load
->dest
, num_components
, NULL
);
1075 load
->variables
[0] = lhs_deref
;
1076 ralloc_steal(load
, load
->variables
[0]);
1077 nir_instr_insert_after_cf_list(this->cf_node_list
, &load
->instr
);
1080 switch (ir
->lhs
->type
->vector_elements
) {
1081 case 1: vec_op
= nir_op_imov
; break;
1082 case 2: vec_op
= nir_op_vec2
; break;
1083 case 3: vec_op
= nir_op_vec3
; break;
1084 case 4: vec_op
= nir_op_vec4
; break;
1085 default: unreachable("Invalid number of components"); break;
1087 nir_alu_instr
*vec
= nir_alu_instr_create(this->shader
, vec_op
);
1088 nir_ssa_dest_init(&vec
->instr
, &vec
->dest
.dest
, num_components
, NULL
);
1089 vec
->dest
.write_mask
= (1 << num_components
) - 1;
1091 unsigned component
= 0;
1092 for (unsigned i
= 0; i
< ir
->lhs
->type
->vector_elements
; i
++) {
1093 if (ir
->write_mask
& (1 << i
)) {
1094 vec
->src
[i
].src
= src
;
1096 /* GLSL IR will give us the input to the write-masked assignment
1097 * in a single packed vector. So, for example, if the
1098 * writemask is xzw, then we have to swizzle x -> x, y -> z,
1099 * and z -> w and get the y component from the load.
1101 vec
->src
[i
].swizzle
[0] = component
++;
1103 vec
->src
[i
].src
.is_ssa
= true;
1104 vec
->src
[i
].src
.ssa
= &load
->dest
.ssa
;
1105 vec
->src
[i
].swizzle
[0] = i
;
1109 nir_instr_insert_after_cf_list(this->cf_node_list
, &vec
->instr
);
1112 src
.ssa
= &vec
->dest
.dest
.ssa
;
1115 nir_intrinsic_instr
*store
=
1116 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1117 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1118 nir_deref
*store_deref
= nir_copy_deref(store
, &lhs_deref
->deref
);
1119 store
->variables
[0] = nir_deref_as_var(store_deref
);
1120 store
->src
[0] = src
;
1122 if (ir
->condition
) {
1123 nir_if
*if_stmt
= nir_if_create(this->shader
);
1124 if_stmt
->condition
= nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
1125 nir_cf_node_insert_end(this->cf_node_list
, &if_stmt
->cf_node
);
1126 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, &store
->instr
);
1128 nir_instr_insert_after_cf_list(this->cf_node_list
, &store
->instr
);
1133 * Given an instruction, returns a pointer to its destination or NULL if there
1134 * is no destination.
1136 * Note that this only handles instructions we generate at this level.
1139 get_instr_dest(nir_instr
*instr
)
1141 nir_alu_instr
*alu_instr
;
1142 nir_intrinsic_instr
*intrinsic_instr
;
1143 nir_tex_instr
*tex_instr
;
1145 switch (instr
->type
) {
1146 case nir_instr_type_alu
:
1147 alu_instr
= nir_instr_as_alu(instr
);
1148 return &alu_instr
->dest
.dest
;
1150 case nir_instr_type_intrinsic
:
1151 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1152 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1153 return &intrinsic_instr
->dest
;
1157 case nir_instr_type_tex
:
1158 tex_instr
= nir_instr_as_tex(instr
);
1159 return &tex_instr
->dest
;
1162 unreachable("not reached");
1169 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
)
1171 nir_dest
*dest
= get_instr_dest(instr
);
1174 nir_ssa_dest_init(instr
, dest
, num_components
, NULL
);
1176 nir_instr_insert_after_cf_list(this->cf_node_list
, instr
);
1179 assert(dest
->is_ssa
);
1180 this->result
= &dest
->ssa
;
1185 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1188 if (ir
->as_dereference() || ir
->as_constant()) {
1190 * A dereference is being used on the right hand side, which means we
1191 * must emit a variable load.
1194 nir_intrinsic_instr
*load_instr
=
1195 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1196 load_instr
->num_components
= ir
->type
->vector_elements
;
1197 load_instr
->variables
[0] = this->deref_head
;
1198 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1199 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
);
1202 return this->result
;
1206 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_ssa_def
**srcs
)
1208 nir_alu_instr
*instr
= nir_alu_instr_create(this->shader
, op
);
1209 for (unsigned i
= 0; i
< nir_op_infos
[op
].num_inputs
; i
++)
1210 instr
->src
[i
].src
= nir_src_for_ssa(srcs
[i
]);
1211 instr
->dest
.write_mask
= (1 << dest_size
) - 1;
1212 add_instr(&instr
->instr
, dest_size
);
1217 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
)
1219 assert(nir_op_infos
[op
].num_inputs
== 1);
1220 return emit(op
, dest_size
, &src1
);
1224 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
1227 assert(nir_op_infos
[op
].num_inputs
== 2);
1228 nir_ssa_def
*srcs
[] = { src1
, src2
};
1229 return emit(op
, dest_size
, srcs
);
1233 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
1234 nir_ssa_def
*src2
, nir_ssa_def
*src3
)
1236 assert(nir_op_infos
[op
].num_inputs
== 3);
1237 nir_ssa_def
*srcs
[] = { src1
, src2
, src3
};
1238 return emit(op
, dest_size
, srcs
);
1242 nir_visitor::visit(ir_expression
*ir
)
1244 /* Some special cases */
1245 switch (ir
->operation
) {
1246 case ir_binop_ubo_load
: {
1247 ir_constant
*const_index
= ir
->operands
[1]->as_constant();
1249 nir_intrinsic_op op
;
1251 op
= nir_intrinsic_load_ubo
;
1253 op
= nir_intrinsic_load_ubo_indirect
;
1255 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(this->shader
, op
);
1256 load
->num_components
= ir
->type
->vector_elements
;
1257 load
->const_index
[0] = const_index
? const_index
->value
.u
[0] : 0; /* base offset */
1258 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1260 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1261 add_instr(&load
->instr
, ir
->type
->vector_elements
);
1264 * In UBO's, a true boolean value is any non-zero value, but we consider
1265 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1268 if (ir
->type
->base_type
== GLSL_TYPE_BOOL
) {
1269 nir_load_const_instr
*const_zero
= nir_load_const_instr_create(shader
, 1);
1270 const_zero
->value
.u
[0] = 0;
1271 nir_instr_insert_after_cf_list(this->cf_node_list
, &const_zero
->instr
);
1273 nir_alu_instr
*compare
= nir_alu_instr_create(shader
, nir_op_ine
);
1274 compare
->src
[0].src
.is_ssa
= true;
1275 compare
->src
[0].src
.ssa
= &load
->dest
.ssa
;
1276 compare
->src
[1].src
.is_ssa
= true;
1277 compare
->src
[1].src
.ssa
= &const_zero
->def
;
1278 for (unsigned i
= 0; i
< ir
->type
->vector_elements
; i
++)
1279 compare
->src
[1].swizzle
[i
] = 0;
1280 compare
->dest
.write_mask
= (1 << ir
->type
->vector_elements
) - 1;
1282 add_instr(&compare
->instr
, ir
->type
->vector_elements
);
1288 case ir_unop_interpolate_at_centroid
:
1289 case ir_binop_interpolate_at_offset
:
1290 case ir_binop_interpolate_at_sample
: {
1291 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1292 ir_swizzle
*swizzle
= NULL
;
1294 /* the api does not allow a swizzle here, but the varying packing code
1295 * may have pushed one into here.
1297 swizzle
= ir
->operands
[0]->as_swizzle();
1299 deref
= swizzle
->val
->as_dereference();
1303 deref
->accept(this);
1305 nir_intrinsic_op op
;
1306 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1307 switch (ir
->operation
) {
1308 case ir_unop_interpolate_at_centroid
:
1309 op
= nir_intrinsic_interp_var_at_centroid
;
1311 case ir_binop_interpolate_at_offset
:
1312 op
= nir_intrinsic_interp_var_at_offset
;
1314 case ir_binop_interpolate_at_sample
:
1315 op
= nir_intrinsic_interp_var_at_sample
;
1318 unreachable("Invalid interpolation intrinsic");
1321 /* This case can happen if the vertex shader does not write the
1322 * given varying. In this case, the linker will lower it to a
1323 * global variable. Since interpolating a variable makes no
1324 * sense, we'll just turn it into a load which will probably
1325 * eventually end up as an SSA definition.
1327 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1328 op
= nir_intrinsic_load_var
;
1331 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1332 intrin
->num_components
= deref
->type
->vector_elements
;
1333 intrin
->variables
[0] = this->deref_head
;
1334 ralloc_steal(intrin
, intrin
->variables
[0]);
1336 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1337 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1338 intrin
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1340 add_instr(&intrin
->instr
, deref
->type
->vector_elements
);
1343 nir_alu_instr
*mov
= nir_alu_instr_create(shader
, nir_op_imov
);
1344 mov
->dest
.write_mask
= (1 << swizzle
->type
->vector_elements
) - 1;
1345 mov
->src
[0].src
.is_ssa
= true;
1346 mov
->src
[0].src
.ssa
= &intrin
->dest
.ssa
;
1348 mov
->src
[0].swizzle
[0] = swizzle
->mask
.x
;
1349 mov
->src
[0].swizzle
[1] = swizzle
->mask
.y
;
1350 mov
->src
[0].swizzle
[2] = swizzle
->mask
.z
;
1351 mov
->src
[0].swizzle
[3] = swizzle
->mask
.w
;
1352 for (unsigned i
= deref
->type
->vector_elements
; i
< 4; i
++)
1353 mov
->src
[0].swizzle
[i
] = 0;
1355 add_instr(&mov
->instr
, swizzle
->type
->vector_elements
);
1365 nir_ssa_def
*srcs
[4];
1366 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1367 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1369 glsl_base_type types
[4];
1370 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1372 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1374 types
[i
] = GLSL_TYPE_FLOAT
;
1376 glsl_base_type out_type
;
1378 out_type
= ir
->type
->base_type
;
1380 out_type
= GLSL_TYPE_FLOAT
;
1382 unsigned dest_size
= ir
->type
->vector_elements
;
1384 nir_alu_instr
*instr
;
1387 switch (ir
->operation
) {
1388 case ir_unop_bit_not
: emit(nir_op_inot
, dest_size
, srcs
); break;
1389 case ir_unop_logic_not
:
1390 emit(supports_ints
? nir_op_inot
: nir_op_fnot
, dest_size
, srcs
);
1393 instr
= emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fneg
: nir_op_ineg
,
1397 instr
= emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fabs
: nir_op_iabs
,
1400 case ir_unop_saturate
:
1401 assert(types
[0] == GLSL_TYPE_FLOAT
);
1402 instr
= emit(nir_op_fsat
, dest_size
, srcs
);
1405 emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fsign
: nir_op_isign
,
1408 case ir_unop_rcp
: emit(nir_op_frcp
, dest_size
, srcs
); break;
1409 case ir_unop_rsq
: emit(nir_op_frsq
, dest_size
, srcs
); break;
1410 case ir_unop_sqrt
: emit(nir_op_fsqrt
, dest_size
, srcs
); break;
1411 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1412 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1413 case ir_unop_exp2
: emit(nir_op_fexp2
, dest_size
, srcs
); break;
1414 case ir_unop_log2
: emit(nir_op_flog2
, dest_size
, srcs
); break;
1416 emit(supports_ints
? nir_op_i2f
: nir_op_fmov
, dest_size
, srcs
);
1419 emit(supports_ints
? nir_op_u2f
: nir_op_fmov
, dest_size
, srcs
);
1422 emit(supports_ints
? nir_op_b2f
: nir_op_fmov
, dest_size
, srcs
);
1424 case ir_unop_f2i
: emit(nir_op_f2i
, dest_size
, srcs
); break;
1425 case ir_unop_f2u
: emit(nir_op_f2u
, dest_size
, srcs
); break;
1426 case ir_unop_f2b
: emit(nir_op_f2b
, dest_size
, srcs
); break;
1427 case ir_unop_i2b
: emit(nir_op_i2b
, dest_size
, srcs
); break;
1428 case ir_unop_b2i
: emit(nir_op_b2i
, dest_size
, srcs
); break;
1431 case ir_unop_bitcast_i2f
:
1432 case ir_unop_bitcast_f2i
:
1433 case ir_unop_bitcast_u2f
:
1434 case ir_unop_bitcast_f2u
:
1435 case ir_unop_subroutine_to_int
:
1437 emit(nir_op_imov
, dest_size
, srcs
);
1440 switch (ir
->operands
[0]->type
->vector_elements
) {
1442 emit(supports_ints
? nir_op_bany2
: nir_op_fany2
,
1446 emit(supports_ints
? nir_op_bany3
: nir_op_fany3
,
1450 emit(supports_ints
? nir_op_bany4
: nir_op_fany4
,
1454 unreachable("not reached");
1457 case ir_unop_trunc
: emit(nir_op_ftrunc
, dest_size
, srcs
); break;
1458 case ir_unop_ceil
: emit(nir_op_fceil
, dest_size
, srcs
); break;
1459 case ir_unop_floor
: emit(nir_op_ffloor
, dest_size
, srcs
); break;
1460 case ir_unop_fract
: emit(nir_op_ffract
, dest_size
, srcs
); break;
1461 case ir_unop_round_even
: emit(nir_op_fround_even
, dest_size
, srcs
); break;
1462 case ir_unop_sin
: emit(nir_op_fsin
, dest_size
, srcs
); break;
1463 case ir_unop_cos
: emit(nir_op_fcos
, dest_size
, srcs
); break;
1464 case ir_unop_dFdx
: emit(nir_op_fddx
, dest_size
, srcs
); break;
1465 case ir_unop_dFdy
: emit(nir_op_fddy
, dest_size
, srcs
); break;
1466 case ir_unop_dFdx_fine
: emit(nir_op_fddx_fine
, dest_size
, srcs
); break;
1467 case ir_unop_dFdy_fine
: emit(nir_op_fddy_fine
, dest_size
, srcs
); break;
1468 case ir_unop_dFdx_coarse
: emit(nir_op_fddx_coarse
, dest_size
, srcs
); break;
1469 case ir_unop_dFdy_coarse
: emit(nir_op_fddy_coarse
, dest_size
, srcs
); break;
1470 case ir_unop_pack_snorm_2x16
:
1471 emit(nir_op_pack_snorm_2x16
, dest_size
, srcs
);
1473 case ir_unop_pack_snorm_4x8
:
1474 emit(nir_op_pack_snorm_4x8
, dest_size
, srcs
);
1476 case ir_unop_pack_unorm_2x16
:
1477 emit(nir_op_pack_unorm_2x16
, dest_size
, srcs
);
1479 case ir_unop_pack_unorm_4x8
:
1480 emit(nir_op_pack_unorm_4x8
, dest_size
, srcs
);
1482 case ir_unop_pack_half_2x16
:
1483 emit(nir_op_pack_half_2x16
, dest_size
, srcs
);
1485 case ir_unop_unpack_snorm_2x16
:
1486 emit(nir_op_unpack_snorm_2x16
, dest_size
, srcs
);
1488 case ir_unop_unpack_snorm_4x8
:
1489 emit(nir_op_unpack_snorm_4x8
, dest_size
, srcs
);
1491 case ir_unop_unpack_unorm_2x16
:
1492 emit(nir_op_unpack_unorm_2x16
, dest_size
, srcs
);
1494 case ir_unop_unpack_unorm_4x8
:
1495 emit(nir_op_unpack_unorm_4x8
, dest_size
, srcs
);
1497 case ir_unop_unpack_half_2x16
:
1498 emit(nir_op_unpack_half_2x16
, dest_size
, srcs
);
1500 case ir_unop_unpack_half_2x16_split_x
:
1501 emit(nir_op_unpack_half_2x16_split_x
, dest_size
, srcs
);
1503 case ir_unop_unpack_half_2x16_split_y
:
1504 emit(nir_op_unpack_half_2x16_split_y
, dest_size
, srcs
);
1506 case ir_unop_bitfield_reverse
:
1507 emit(nir_op_bitfield_reverse
, dest_size
, srcs
);
1509 case ir_unop_bit_count
:
1510 emit(nir_op_bit_count
, dest_size
, srcs
);
1512 case ir_unop_find_msb
:
1514 case GLSL_TYPE_UINT
:
1515 emit(nir_op_ufind_msb
, dest_size
, srcs
);
1518 emit(nir_op_ifind_msb
, dest_size
, srcs
);
1521 unreachable("Invalid type for findMSB()");
1524 case ir_unop_find_lsb
:
1525 emit(nir_op_find_lsb
, dest_size
, srcs
);
1529 switch (ir
->type
->vector_elements
) {
1531 switch (ir
->operands
[0]->type
->vector_elements
) {
1532 case 1: emit(nir_op_fnoise1_1
, dest_size
, srcs
); break;
1533 case 2: emit(nir_op_fnoise1_2
, dest_size
, srcs
); break;
1534 case 3: emit(nir_op_fnoise1_3
, dest_size
, srcs
); break;
1535 case 4: emit(nir_op_fnoise1_4
, dest_size
, srcs
); break;
1536 default: unreachable("not reached");
1540 switch (ir
->operands
[0]->type
->vector_elements
) {
1541 case 1: emit(nir_op_fnoise2_1
, dest_size
, srcs
); break;
1542 case 2: emit(nir_op_fnoise2_2
, dest_size
, srcs
); break;
1543 case 3: emit(nir_op_fnoise2_3
, dest_size
, srcs
); break;
1544 case 4: emit(nir_op_fnoise2_4
, dest_size
, srcs
); break;
1545 default: unreachable("not reached");
1549 switch (ir
->operands
[0]->type
->vector_elements
) {
1550 case 1: emit(nir_op_fnoise3_1
, dest_size
, srcs
); break;
1551 case 2: emit(nir_op_fnoise3_2
, dest_size
, srcs
); break;
1552 case 3: emit(nir_op_fnoise3_3
, dest_size
, srcs
); break;
1553 case 4: emit(nir_op_fnoise3_4
, dest_size
, srcs
); break;
1554 default: unreachable("not reached");
1558 switch (ir
->operands
[0]->type
->vector_elements
) {
1559 case 1: emit(nir_op_fnoise4_1
, dest_size
, srcs
); break;
1560 case 2: emit(nir_op_fnoise4_2
, dest_size
, srcs
); break;
1561 case 3: emit(nir_op_fnoise4_3
, dest_size
, srcs
); break;
1562 case 4: emit(nir_op_fnoise4_4
, dest_size
, srcs
); break;
1563 default: unreachable("not reached");
1567 unreachable("not reached");
1570 case ir_unop_get_buffer_size
: {
1571 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1573 nir_intrinsic_get_buffer_size
);
1574 load
->num_components
= ir
->type
->vector_elements
;
1575 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1576 add_instr(&load
->instr
, ir
->type
->vector_elements
);
1588 case ir_binop_bit_and
:
1589 case ir_binop_bit_or
:
1590 case ir_binop_bit_xor
:
1591 case ir_binop_logic_and
:
1592 case ir_binop_logic_or
:
1593 case ir_binop_logic_xor
:
1594 case ir_binop_lshift
:
1595 case ir_binop_rshift
:
1596 switch (ir
->operation
) {
1598 if (out_type
== GLSL_TYPE_FLOAT
)
1604 if (out_type
== GLSL_TYPE_FLOAT
)
1610 if (out_type
== GLSL_TYPE_FLOAT
)
1616 if (out_type
== GLSL_TYPE_FLOAT
)
1618 else if (out_type
== GLSL_TYPE_INT
)
1624 if (out_type
== GLSL_TYPE_FLOAT
)
1630 if (out_type
== GLSL_TYPE_FLOAT
)
1632 else if (out_type
== GLSL_TYPE_INT
)
1638 if (out_type
== GLSL_TYPE_FLOAT
)
1640 else if (out_type
== GLSL_TYPE_INT
)
1645 case ir_binop_bit_and
:
1648 case ir_binop_bit_or
:
1651 case ir_binop_bit_xor
:
1654 case ir_binop_logic_and
:
1660 case ir_binop_logic_or
:
1666 case ir_binop_logic_xor
:
1672 case ir_binop_lshift
:
1675 case ir_binop_rshift
:
1676 if (out_type
== GLSL_TYPE_INT
)
1686 unreachable("not reached");
1689 instr
= emit(op
, dest_size
, srcs
);
1691 if (ir
->operands
[0]->type
->vector_elements
!= 1 &&
1692 ir
->operands
[1]->type
->vector_elements
== 1) {
1693 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
;
1695 instr
->src
[1].swizzle
[i
] = 0;
1699 if (ir
->operands
[1]->type
->vector_elements
!= 1 &&
1700 ir
->operands
[0]->type
->vector_elements
== 1) {
1701 for (unsigned i
= 0; i
< ir
->operands
[1]->type
->vector_elements
;
1703 instr
->src
[0].swizzle
[i
] = 0;
1708 case ir_binop_imul_high
:
1709 emit(out_type
== GLSL_TYPE_UINT
? nir_op_umul_high
: nir_op_imul_high
,
1712 case ir_binop_carry
: emit(nir_op_uadd_carry
, dest_size
, srcs
); break;
1713 case ir_binop_borrow
: emit(nir_op_usub_borrow
, dest_size
, srcs
); break;
1715 if (supports_ints
) {
1716 if (types
[0] == GLSL_TYPE_FLOAT
)
1717 emit(nir_op_flt
, dest_size
, srcs
);
1718 else if (types
[0] == GLSL_TYPE_INT
)
1719 emit(nir_op_ilt
, dest_size
, srcs
);
1721 emit(nir_op_ult
, dest_size
, srcs
);
1723 emit(nir_op_slt
, dest_size
, srcs
);
1726 case ir_binop_greater
:
1727 if (supports_ints
) {
1728 if (types
[0] == GLSL_TYPE_FLOAT
)
1729 emit(nir_op_flt
, dest_size
, srcs
[1], srcs
[0]);
1730 else if (types
[0] == GLSL_TYPE_INT
)
1731 emit(nir_op_ilt
, dest_size
, srcs
[1], srcs
[0]);
1733 emit(nir_op_ult
, dest_size
, srcs
[1], srcs
[0]);
1735 emit(nir_op_slt
, dest_size
, srcs
[1], srcs
[0]);
1738 case ir_binop_lequal
:
1739 if (supports_ints
) {
1740 if (types
[0] == GLSL_TYPE_FLOAT
)
1741 emit(nir_op_fge
, dest_size
, srcs
[1], srcs
[0]);
1742 else if (types
[0] == GLSL_TYPE_INT
)
1743 emit(nir_op_ige
, dest_size
, srcs
[1], srcs
[0]);
1745 emit(nir_op_uge
, dest_size
, srcs
[1], srcs
[0]);
1747 emit(nir_op_slt
, dest_size
, srcs
[1], srcs
[0]);
1750 case ir_binop_gequal
:
1751 if (supports_ints
) {
1752 if (types
[0] == GLSL_TYPE_FLOAT
)
1753 emit(nir_op_fge
, dest_size
, srcs
);
1754 else if (types
[0] == GLSL_TYPE_INT
)
1755 emit(nir_op_ige
, dest_size
, srcs
);
1757 emit(nir_op_uge
, dest_size
, srcs
);
1759 emit(nir_op_slt
, dest_size
, srcs
);
1762 case ir_binop_equal
:
1763 if (supports_ints
) {
1764 if (types
[0] == GLSL_TYPE_FLOAT
)
1765 emit(nir_op_feq
, dest_size
, srcs
);
1767 emit(nir_op_ieq
, dest_size
, srcs
);
1769 emit(nir_op_seq
, dest_size
, srcs
);
1772 case ir_binop_nequal
:
1773 if (supports_ints
) {
1774 if (types
[0] == GLSL_TYPE_FLOAT
)
1775 emit(nir_op_fne
, dest_size
, srcs
);
1777 emit(nir_op_ine
, dest_size
, srcs
);
1779 emit(nir_op_sne
, dest_size
, srcs
);
1782 case ir_binop_all_equal
:
1783 if (supports_ints
) {
1784 if (types
[0] == GLSL_TYPE_FLOAT
) {
1785 switch (ir
->operands
[0]->type
->vector_elements
) {
1786 case 1: emit(nir_op_feq
, dest_size
, srcs
); break;
1787 case 2: emit(nir_op_ball_fequal2
, dest_size
, srcs
); break;
1788 case 3: emit(nir_op_ball_fequal3
, dest_size
, srcs
); break;
1789 case 4: emit(nir_op_ball_fequal4
, dest_size
, srcs
); break;
1791 unreachable("not reached");
1794 switch (ir
->operands
[0]->type
->vector_elements
) {
1795 case 1: emit(nir_op_ieq
, dest_size
, srcs
); break;
1796 case 2: emit(nir_op_ball_iequal2
, dest_size
, srcs
); break;
1797 case 3: emit(nir_op_ball_iequal3
, dest_size
, srcs
); break;
1798 case 4: emit(nir_op_ball_iequal4
, dest_size
, srcs
); break;
1800 unreachable("not reached");
1804 switch (ir
->operands
[0]->type
->vector_elements
) {
1805 case 1: emit(nir_op_seq
, dest_size
, srcs
); break;
1806 case 2: emit(nir_op_fall_equal2
, dest_size
, srcs
); break;
1807 case 3: emit(nir_op_fall_equal3
, dest_size
, srcs
); break;
1808 case 4: emit(nir_op_fall_equal4
, dest_size
, srcs
); break;
1810 unreachable("not reached");
1814 case ir_binop_any_nequal
:
1815 if (supports_ints
) {
1816 if (types
[0] == GLSL_TYPE_FLOAT
) {
1817 switch (ir
->operands
[0]->type
->vector_elements
) {
1818 case 1: emit(nir_op_fne
, dest_size
, srcs
); break;
1819 case 2: emit(nir_op_bany_fnequal2
, dest_size
, srcs
); break;
1820 case 3: emit(nir_op_bany_fnequal3
, dest_size
, srcs
); break;
1821 case 4: emit(nir_op_bany_fnequal4
, dest_size
, srcs
); break;
1823 unreachable("not reached");
1826 switch (ir
->operands
[0]->type
->vector_elements
) {
1827 case 1: emit(nir_op_ine
, dest_size
, srcs
); break;
1828 case 2: emit(nir_op_bany_inequal2
, dest_size
, srcs
); break;
1829 case 3: emit(nir_op_bany_inequal3
, dest_size
, srcs
); break;
1830 case 4: emit(nir_op_bany_inequal4
, dest_size
, srcs
); break;
1832 unreachable("not reached");
1836 switch (ir
->operands
[0]->type
->vector_elements
) {
1837 case 1: emit(nir_op_sne
, dest_size
, srcs
); break;
1838 case 2: emit(nir_op_fany_nequal2
, dest_size
, srcs
); break;
1839 case 3: emit(nir_op_fany_nequal3
, dest_size
, srcs
); break;
1840 case 4: emit(nir_op_fany_nequal4
, dest_size
, srcs
); break;
1842 unreachable("not reached");
1847 switch (ir
->operands
[0]->type
->vector_elements
) {
1848 case 2: emit(nir_op_fdot2
, dest_size
, srcs
); break;
1849 case 3: emit(nir_op_fdot3
, dest_size
, srcs
); break;
1850 case 4: emit(nir_op_fdot4
, dest_size
, srcs
); break;
1852 unreachable("not reached");
1856 case ir_binop_pack_half_2x16_split
:
1857 emit(nir_op_pack_half_2x16_split
, dest_size
, srcs
);
1859 case ir_binop_bfm
: emit(nir_op_bfm
, dest_size
, srcs
); break;
1860 case ir_binop_ldexp
: emit(nir_op_ldexp
, dest_size
, srcs
); break;
1861 case ir_triop_fma
: emit(nir_op_ffma
, dest_size
, srcs
); break;
1863 instr
= emit(nir_op_flrp
, dest_size
, srcs
);
1864 if (ir
->operands
[0]->type
->vector_elements
!= 1 &&
1865 ir
->operands
[2]->type
->vector_elements
== 1) {
1866 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
;
1868 instr
->src
[2].swizzle
[i
] = 0;
1874 emit(nir_op_bcsel
, dest_size
, srcs
);
1876 emit(nir_op_fcsel
, dest_size
, srcs
);
1879 instr
= emit(nir_op_bfi
, dest_size
, srcs
);
1880 for (unsigned i
= 0; i
< ir
->operands
[1]->type
->vector_elements
; i
++) {
1881 instr
->src
[0].swizzle
[i
] = 0;
1884 case ir_triop_bitfield_extract
:
1885 instr
= emit(out_type
== GLSL_TYPE_INT
? nir_op_ibitfield_extract
:
1886 nir_op_ubitfield_extract
, dest_size
, srcs
);
1887 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1888 instr
->src
[1].swizzle
[i
] = 0;
1889 instr
->src
[2].swizzle
[i
] = 0;
1892 case ir_quadop_bitfield_insert
:
1893 instr
= emit(nir_op_bitfield_insert
, dest_size
, srcs
);
1894 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1895 instr
->src
[2].swizzle
[i
] = 0;
1896 instr
->src
[3].swizzle
[i
] = 0;
1899 case ir_quadop_vector
:
1900 switch (ir
->type
->vector_elements
) {
1901 case 2: emit(nir_op_vec2
, dest_size
, srcs
); break;
1902 case 3: emit(nir_op_vec3
, dest_size
, srcs
); break;
1903 case 4: emit(nir_op_vec4
, dest_size
, srcs
); break;
1904 default: unreachable("not reached");
1909 unreachable("not reached");
1914 nir_visitor::visit(ir_swizzle
*ir
)
1916 nir_alu_instr
*instr
= emit(supports_ints
? nir_op_imov
: nir_op_fmov
,
1917 ir
->type
->vector_elements
,
1918 evaluate_rvalue(ir
->val
));
1920 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1921 for (unsigned i
= 0; i
< ir
->type
->vector_elements
; i
++)
1922 instr
->src
[0].swizzle
[i
] = swizzle
[i
];
1926 nir_visitor::visit(ir_texture
*ir
)
1933 num_srcs
= 1; /* coordinate */
1938 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1939 num_srcs
= 2; /* coordinate, bias/lod */
1943 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1949 if (ir
->lod_info
.lod
!= NULL
)
1950 num_srcs
= 2; /* coordinate, lod */
1952 num_srcs
= 1; /* coordinate */
1956 op
= nir_texop_txf_ms
;
1957 num_srcs
= 2; /* coordinate, sample_index */
1962 if (ir
->lod_info
.lod
!= NULL
)
1963 num_srcs
= 1; /* lod */
1970 num_srcs
= 1; /* coordinate */
1975 num_srcs
= 1; /* coordinate */
1978 case ir_query_levels
:
1979 op
= nir_texop_query_levels
;
1983 case ir_texture_samples
:
1984 op
= nir_texop_texture_samples
;
1989 unreachable("not reached");
1992 if (ir
->projector
!= NULL
)
1994 if (ir
->shadow_comparitor
!= NULL
)
1996 if (ir
->offset
!= NULL
&& ir
->offset
->as_constant() == NULL
)
1999 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
2002 instr
->sampler_dim
=
2003 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
2004 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
2005 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
2006 if (instr
->is_shadow
)
2007 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
2008 switch (ir
->type
->base_type
) {
2009 case GLSL_TYPE_FLOAT
:
2010 instr
->dest_type
= nir_type_float
;
2013 instr
->dest_type
= nir_type_int
;
2015 case GLSL_TYPE_UINT
:
2016 instr
->dest_type
= nir_type_unsigned
;
2019 unreachable("not reached");
2022 instr
->sampler
= evaluate_deref(&instr
->instr
, ir
->sampler
);
2024 unsigned src_number
= 0;
2026 if (ir
->coordinate
!= NULL
) {
2027 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
2028 instr
->src
[src_number
].src
=
2029 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
2030 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2034 if (ir
->projector
!= NULL
) {
2035 instr
->src
[src_number
].src
=
2036 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
2037 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2041 if (ir
->shadow_comparitor
!= NULL
) {
2042 instr
->src
[src_number
].src
=
2043 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparitor
));
2044 instr
->src
[src_number
].src_type
= nir_tex_src_comparitor
;
2048 if (ir
->offset
!= NULL
) {
2049 /* we don't support multiple offsets yet */
2050 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2052 ir_constant
*const_offset
= ir
->offset
->as_constant();
2053 if (const_offset
!= NULL
) {
2054 for (unsigned i
= 0; i
< const_offset
->type
->vector_elements
; i
++)
2055 instr
->const_offset
[i
] = const_offset
->value
.i
[i
];
2057 instr
->src
[src_number
].src
=
2058 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
2059 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2066 instr
->src
[src_number
].src
=
2067 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
2068 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2075 if (ir
->lod_info
.lod
!= NULL
) {
2076 instr
->src
[src_number
].src
=
2077 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
2078 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2084 instr
->src
[src_number
].src
=
2085 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
2086 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2088 instr
->src
[src_number
].src
=
2089 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
2090 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2095 instr
->src
[src_number
].src
=
2096 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
2097 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2102 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2109 assert(src_number
== num_srcs
);
2111 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
));
2115 nir_visitor::visit(ir_constant
*ir
)
2118 * We don't know if this variable is an an array or struct that gets
2119 * dereferenced, so do the safe thing an make it a variable with a
2120 * constant initializer and return a dereference.
2124 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2125 var
->data
.read_only
= true;
2126 var
->constant_initializer
= constant_copy(ir
, var
);
2128 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2129 this->deref_tail
= &this->deref_head
->deref
;
2133 nir_visitor::visit(ir_dereference_variable
*ir
)
2135 struct hash_entry
*entry
=
2136 _mesa_hash_table_search(this->var_table
, ir
->var
);
2138 nir_variable
*var
= (nir_variable
*) entry
->data
;
2140 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2141 this->deref_head
= deref
;
2142 this->deref_tail
= &deref
->deref
;
2146 nir_visitor::visit(ir_dereference_record
*ir
)
2148 ir
->record
->accept(this);
2150 int field_index
= this->deref_tail
->type
->field_index(ir
->field
);
2151 assert(field_index
>= 0);
2153 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2154 deref
->deref
.type
= ir
->type
;
2155 this->deref_tail
->child
= &deref
->deref
;
2156 this->deref_tail
= &deref
->deref
;
2160 nir_visitor::visit(ir_dereference_array
*ir
)
2162 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2163 deref
->deref
.type
= ir
->type
;
2165 ir_constant
*const_index
= ir
->array_index
->as_constant();
2166 if (const_index
!= NULL
) {
2167 deref
->deref_array_type
= nir_deref_array_type_direct
;
2168 deref
->base_offset
= const_index
->value
.u
[0];
2170 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2172 nir_src_for_ssa(evaluate_rvalue(ir
->array_index
));
2175 ir
->array
->accept(this);
2177 this->deref_tail
->child
= &deref
->deref
;
2178 ralloc_steal(this->deref_tail
, deref
);
2179 this->deref_tail
= &deref
->deref
;
2183 nir_visitor::visit(ir_barrier
*ir
)
2185 nir_intrinsic_instr
*instr
=
2186 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2187 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);