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 "nir_builder.h"
31 #include "compiler/glsl/ir_visitor.h"
32 #include "compiler/glsl/ir_hierarchical_visitor.h"
33 #include "compiler/glsl/ir.h"
34 #include "main/imports.h"
37 * pass to lower GLSL IR to NIR
39 * This will lower variable dereferences to loads/stores of corresponding
40 * variables in NIR - the variables will be converted to registers in a later
46 class nir_visitor
: public ir_visitor
49 nir_visitor(nir_shader
*shader
, gl_shader
*sh
);
52 virtual void visit(ir_variable
*);
53 virtual void visit(ir_function
*);
54 virtual void visit(ir_function_signature
*);
55 virtual void visit(ir_loop
*);
56 virtual void visit(ir_if
*);
57 virtual void visit(ir_discard
*);
58 virtual void visit(ir_loop_jump
*);
59 virtual void visit(ir_return
*);
60 virtual void visit(ir_call
*);
61 virtual void visit(ir_assignment
*);
62 virtual void visit(ir_emit_vertex
*);
63 virtual void visit(ir_end_primitive
*);
64 virtual void visit(ir_expression
*);
65 virtual void visit(ir_swizzle
*);
66 virtual void visit(ir_texture
*);
67 virtual void visit(ir_constant
*);
68 virtual void visit(ir_dereference_variable
*);
69 virtual void visit(ir_dereference_record
*);
70 virtual void visit(ir_dereference_array
*);
71 virtual void visit(ir_barrier
*);
73 void create_function(ir_function_signature
*ir
);
76 void add_instr(nir_instr
*instr
, unsigned num_components
);
77 nir_ssa_def
*evaluate_rvalue(ir_rvalue
*ir
);
79 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
**srcs
);
80 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
);
81 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
83 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
84 nir_ssa_def
*src2
, nir_ssa_def
*src3
);
91 nir_function_impl
*impl
;
93 nir_ssa_def
*result
; /* result of the expression tree last visited */
95 nir_deref_var
*evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
);
97 /* the head of the dereference chain we're creating */
98 nir_deref_var
*deref_head
;
99 /* the tail of the dereference chain we're creating */
100 nir_deref
*deref_tail
;
102 nir_variable
*var
; /* variable created by ir_variable visitor */
104 /* whether the IR we're operating on is per-function or global */
107 /* map of ir_variable -> nir_variable */
108 struct hash_table
*var_table
;
110 /* map of ir_function_signature -> nir_function_overload */
111 struct hash_table
*overload_table
;
115 * This visitor runs before the main visitor, calling create_function() for
116 * each function so that the main visitor can resolve forward references in
120 class nir_function_visitor
: public ir_hierarchical_visitor
123 nir_function_visitor(nir_visitor
*v
) : visitor(v
)
126 virtual ir_visitor_status
visit_enter(ir_function
*);
129 nir_visitor
*visitor
;
132 }; /* end of anonymous namespace */
135 glsl_to_nir(const struct gl_shader_program
*shader_prog
,
136 gl_shader_stage stage
,
137 const nir_shader_compiler_options
*options
)
139 struct gl_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
141 nir_shader
*shader
= nir_shader_create(NULL
, stage
, options
);
143 nir_visitor
v1(shader
, sh
);
144 nir_function_visitor
v2(&v1
);
146 visit_exec_list(sh
->ir
, &v1
);
148 nir_function
*main
= NULL
;
149 nir_foreach_function(shader
, func
) {
150 if (strcmp(func
->name
, "main") == 0) {
157 nir_lower_outputs_to_temporaries(shader
, main
);
159 shader
->info
.name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
160 if (shader_prog
->Label
)
161 shader
->info
.label
= ralloc_strdup(shader
, shader_prog
->Label
);
162 shader
->info
.num_textures
= _mesa_fls(sh
->Program
->SamplersUsed
);
163 shader
->info
.num_ubos
= sh
->NumUniformBlocks
;
164 shader
->info
.num_abos
= shader_prog
->NumAtomicBuffers
;
165 shader
->info
.num_ssbos
= sh
->NumShaderStorageBlocks
;
166 shader
->info
.num_images
= sh
->NumImages
;
167 shader
->info
.inputs_read
= sh
->Program
->InputsRead
;
168 shader
->info
.outputs_written
= sh
->Program
->OutputsWritten
;
169 shader
->info
.patch_inputs_read
= sh
->Program
->PatchInputsRead
;
170 shader
->info
.patch_outputs_written
= sh
->Program
->PatchOutputsWritten
;
171 shader
->info
.system_values_read
= sh
->Program
->SystemValuesRead
;
172 shader
->info
.uses_texture_gather
= sh
->Program
->UsesGather
;
173 shader
->info
.uses_clip_distance_out
=
174 sh
->Program
->ClipDistanceArraySize
!= 0;
175 shader
->info
.separate_shader
= shader_prog
->SeparateShader
;
176 shader
->info
.has_transform_feedback_varyings
=
177 shader_prog
->TransformFeedback
.NumVarying
> 0;
180 case MESA_SHADER_TESS_CTRL
:
181 shader
->info
.tcs
.vertices_out
= shader_prog
->TessCtrl
.VerticesOut
;
184 case MESA_SHADER_GEOMETRY
:
185 shader
->info
.gs
.vertices_in
= shader_prog
->Geom
.VerticesIn
;
186 shader
->info
.gs
.output_primitive
= sh
->Geom
.OutputType
;
187 shader
->info
.gs
.vertices_out
= sh
->Geom
.VerticesOut
;
188 shader
->info
.gs
.invocations
= sh
->Geom
.Invocations
;
189 shader
->info
.gs
.uses_end_primitive
= shader_prog
->Geom
.UsesEndPrimitive
;
190 shader
->info
.gs
.uses_streams
= shader_prog
->Geom
.UsesStreams
;
193 case MESA_SHADER_FRAGMENT
: {
194 struct gl_fragment_program
*fp
=
195 (struct gl_fragment_program
*)sh
->Program
;
197 shader
->info
.fs
.uses_discard
= fp
->UsesKill
;
198 shader
->info
.fs
.early_fragment_tests
= sh
->EarlyFragmentTests
;
199 shader
->info
.fs
.depth_layout
= fp
->FragDepthLayout
;
203 case MESA_SHADER_COMPUTE
: {
204 struct gl_compute_program
*cp
= (struct gl_compute_program
*)sh
->Program
;
205 shader
->info
.cs
.local_size
[0] = cp
->LocalSize
[0];
206 shader
->info
.cs
.local_size
[1] = cp
->LocalSize
[1];
207 shader
->info
.cs
.local_size
[2] = cp
->LocalSize
[2];
212 break; /* No stage-specific info */
218 nir_visitor::nir_visitor(nir_shader
*shader
, gl_shader
*sh
)
220 this->supports_ints
= shader
->options
->native_integers
;
221 this->shader
= shader
;
223 this->is_global
= true;
224 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
225 _mesa_key_pointer_equal
);
226 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
227 _mesa_key_pointer_equal
);
230 nir_visitor::~nir_visitor()
232 _mesa_hash_table_destroy(this->var_table
, NULL
);
233 _mesa_hash_table_destroy(this->overload_table
, NULL
);
237 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
240 ralloc_steal(mem_ctx
, this->deref_head
);
241 return this->deref_head
;
244 static nir_constant
*
245 constant_copy(ir_constant
*ir
, void *mem_ctx
)
250 nir_constant
*ret
= ralloc(mem_ctx
, nir_constant
);
252 unsigned total_elems
= ir
->type
->components();
255 ret
->num_elements
= 0;
256 switch (ir
->type
->base_type
) {
258 for (i
= 0; i
< total_elems
; i
++)
259 ret
->value
.u
[i
] = ir
->value
.u
[i
];
263 for (i
= 0; i
< total_elems
; i
++)
264 ret
->value
.i
[i
] = ir
->value
.i
[i
];
267 case GLSL_TYPE_FLOAT
:
268 for (i
= 0; i
< total_elems
; i
++)
269 ret
->value
.f
[i
] = ir
->value
.f
[i
];
273 for (i
= 0; i
< total_elems
; i
++)
274 ret
->value
.b
[i
] = ir
->value
.b
[i
];
277 case GLSL_TYPE_STRUCT
:
278 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
280 ret
->num_elements
= ir
->type
->length
;
283 foreach_in_list(ir_constant
, field
, &ir
->components
) {
284 ret
->elements
[i
] = constant_copy(field
, mem_ctx
);
289 case GLSL_TYPE_ARRAY
:
290 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
292 ret
->num_elements
= ir
->type
->length
;
294 for (i
= 0; i
< ir
->type
->length
; i
++)
295 ret
->elements
[i
] = constant_copy(ir
->array_elements
[i
], mem_ctx
);
299 unreachable("not reached");
306 nir_visitor::visit(ir_variable
*ir
)
308 nir_variable
*var
= ralloc(shader
, nir_variable
);
309 var
->type
= ir
->type
;
310 var
->name
= ralloc_strdup(var
, ir
->name
);
312 var
->data
.read_only
= ir
->data
.read_only
;
313 var
->data
.centroid
= ir
->data
.centroid
;
314 var
->data
.sample
= ir
->data
.sample
;
315 var
->data
.patch
= ir
->data
.patch
;
316 var
->data
.invariant
= ir
->data
.invariant
;
317 var
->data
.location
= ir
->data
.location
;
319 switch(ir
->data
.mode
) {
321 case ir_var_temporary
:
323 var
->data
.mode
= nir_var_global
;
325 var
->data
.mode
= nir_var_local
;
328 case ir_var_function_in
:
329 case ir_var_function_out
:
330 case ir_var_function_inout
:
331 case ir_var_const_in
:
332 var
->data
.mode
= nir_var_local
;
335 case ir_var_shader_in
:
336 if (shader
->stage
== MESA_SHADER_FRAGMENT
&&
337 ir
->data
.location
== VARYING_SLOT_FACE
) {
338 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
339 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
340 var
->data
.mode
= nir_var_system_value
;
341 } else if (shader
->stage
== MESA_SHADER_GEOMETRY
&&
342 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
343 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
344 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
345 var
->data
.mode
= nir_var_system_value
;
347 var
->data
.mode
= nir_var_shader_in
;
351 case ir_var_shader_out
:
352 var
->data
.mode
= nir_var_shader_out
;
356 var
->data
.mode
= nir_var_uniform
;
359 case ir_var_shader_storage
:
360 var
->data
.mode
= nir_var_shader_storage
;
363 case ir_var_system_value
:
364 var
->data
.mode
= nir_var_system_value
;
368 unreachable("not reached");
371 var
->data
.interpolation
= ir
->data
.interpolation
;
372 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
373 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
374 var
->data
.explicit_location
= ir
->data
.explicit_location
;
375 var
->data
.explicit_index
= ir
->data
.explicit_index
;
376 var
->data
.explicit_binding
= ir
->data
.explicit_binding
;
377 var
->data
.has_initializer
= ir
->data
.has_initializer
;
378 var
->data
.location_frac
= ir
->data
.location_frac
;
379 var
->data
.from_named_ifc_block_array
= ir
->data
.from_named_ifc_block_array
;
380 var
->data
.from_named_ifc_block_nonarray
= ir
->data
.from_named_ifc_block_nonarray
;
382 switch (ir
->data
.depth_layout
) {
383 case ir_depth_layout_none
:
384 var
->data
.depth_layout
= nir_depth_layout_none
;
386 case ir_depth_layout_any
:
387 var
->data
.depth_layout
= nir_depth_layout_any
;
389 case ir_depth_layout_greater
:
390 var
->data
.depth_layout
= nir_depth_layout_greater
;
392 case ir_depth_layout_less
:
393 var
->data
.depth_layout
= nir_depth_layout_less
;
395 case ir_depth_layout_unchanged
:
396 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
399 unreachable("not reached");
402 var
->data
.index
= ir
->data
.index
;
403 var
->data
.descriptor_set
= 0;
404 var
->data
.binding
= ir
->data
.binding
;
405 var
->data
.offset
= ir
->data
.offset
;
406 var
->data
.image
.read_only
= ir
->data
.image_read_only
;
407 var
->data
.image
.write_only
= ir
->data
.image_write_only
;
408 var
->data
.image
.coherent
= ir
->data
.image_coherent
;
409 var
->data
.image
._volatile
= ir
->data
.image_volatile
;
410 var
->data
.image
.restrict_flag
= ir
->data
.image_restrict
;
411 var
->data
.image
.format
= ir
->data
.image_format
;
412 var
->data
.max_array_access
= ir
->data
.max_array_access
;
414 var
->num_state_slots
= ir
->get_num_state_slots();
415 if (var
->num_state_slots
> 0) {
416 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
417 var
->num_state_slots
);
419 ir_state_slot
*state_slots
= ir
->get_state_slots();
420 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
421 for (unsigned j
= 0; j
< 5; j
++)
422 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
423 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
426 var
->state_slots
= NULL
;
429 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
431 var
->interface_type
= ir
->get_interface_type();
433 if (var
->data
.mode
== nir_var_local
)
434 nir_function_impl_add_variable(impl
, var
);
436 nir_shader_add_variable(shader
, var
);
438 _mesa_hash_table_insert(var_table
, ir
, var
);
443 nir_function_visitor::visit_enter(ir_function
*ir
)
445 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
446 visitor
->create_function(sig
);
448 return visit_continue_with_parent
;
452 nir_visitor::create_function(ir_function_signature
*ir
)
454 if (ir
->is_intrinsic
)
457 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
459 unsigned num_params
= ir
->parameters
.length();
460 func
->num_params
= num_params
;
461 func
->params
= ralloc_array(shader
, nir_parameter
, num_params
);
464 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
465 switch (param
->data
.mode
) {
466 case ir_var_function_in
:
467 func
->params
[i
].param_type
= nir_parameter_in
;
470 case ir_var_function_out
:
471 func
->params
[i
].param_type
= nir_parameter_out
;
474 case ir_var_function_inout
:
475 func
->params
[i
].param_type
= nir_parameter_inout
;
479 unreachable("not reached");
482 func
->params
[i
].type
= param
->type
;
486 func
->return_type
= ir
->return_type
;
488 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
492 nir_visitor::visit(ir_function
*ir
)
494 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
499 nir_visitor::visit(ir_function_signature
*ir
)
501 if (ir
->is_intrinsic
)
504 struct hash_entry
*entry
=
505 _mesa_hash_table_search(this->overload_table
, ir
);
508 nir_function
*func
= (nir_function
*) entry
->data
;
510 if (ir
->is_defined
) {
511 nir_function_impl
*impl
= nir_function_impl_create(func
);
514 unsigned num_params
= func
->num_params
;
515 impl
->num_params
= num_params
;
516 impl
->params
= ralloc_array(this->shader
, nir_variable
*, num_params
);
518 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
520 impl
->params
[i
] = this->var
;
524 if (func
->return_type
== glsl_type::void_type
) {
525 impl
->return_var
= NULL
;
527 impl
->return_var
= ralloc(this->shader
, nir_variable
);
528 impl
->return_var
->name
= ralloc_strdup(impl
->return_var
,
530 impl
->return_var
->type
= func
->return_type
;
533 this->is_global
= false;
535 nir_builder_init(&b
, impl
);
536 b
.cursor
= nir_after_cf_list(&impl
->body
);
537 visit_exec_list(&ir
->body
, this);
539 this->is_global
= true;
546 nir_visitor::visit(ir_loop
*ir
)
548 nir_loop
*loop
= nir_loop_create(this->shader
);
549 nir_builder_cf_insert(&b
, &loop
->cf_node
);
551 b
.cursor
= nir_after_cf_list(&loop
->body
);
552 visit_exec_list(&ir
->body_instructions
, this);
553 b
.cursor
= nir_after_cf_node(&loop
->cf_node
);
557 nir_visitor::visit(ir_if
*ir
)
560 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
562 nir_if
*if_stmt
= nir_if_create(this->shader
);
563 if_stmt
->condition
= condition
;
564 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
566 b
.cursor
= nir_after_cf_list(&if_stmt
->then_list
);
567 visit_exec_list(&ir
->then_instructions
, this);
569 b
.cursor
= nir_after_cf_list(&if_stmt
->else_list
);
570 visit_exec_list(&ir
->else_instructions
, this);
572 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
576 nir_visitor::visit(ir_discard
*ir
)
579 * discards aren't treated as control flow, because before we lower them
580 * they can appear anywhere in the shader and the stuff after them may still
581 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
582 * discards will be immediately followed by a return.
585 nir_intrinsic_instr
*discard
;
587 discard
= nir_intrinsic_instr_create(this->shader
,
588 nir_intrinsic_discard_if
);
590 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
592 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
595 nir_builder_instr_insert(&b
, &discard
->instr
);
599 nir_visitor::visit(ir_emit_vertex
*ir
)
601 nir_intrinsic_instr
*instr
=
602 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
603 instr
->const_index
[0] = ir
->stream_id();
604 nir_builder_instr_insert(&b
, &instr
->instr
);
608 nir_visitor::visit(ir_end_primitive
*ir
)
610 nir_intrinsic_instr
*instr
=
611 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
612 instr
->const_index
[0] = ir
->stream_id();
613 nir_builder_instr_insert(&b
, &instr
->instr
);
617 nir_visitor::visit(ir_loop_jump
*ir
)
621 case ir_loop_jump::jump_break
:
622 type
= nir_jump_break
;
624 case ir_loop_jump::jump_continue
:
625 type
= nir_jump_continue
;
628 unreachable("not reached");
631 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
632 nir_builder_instr_insert(&b
, &instr
->instr
);
636 nir_visitor::visit(ir_return
*ir
)
638 if (ir
->value
!= NULL
) {
639 nir_intrinsic_instr
*copy
=
640 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
642 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
643 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
646 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
647 nir_builder_instr_insert(&b
, &instr
->instr
);
651 nir_visitor::visit(ir_call
*ir
)
653 if (ir
->callee
->is_intrinsic
) {
655 if (strcmp(ir
->callee_name(), "__intrinsic_atomic_read") == 0) {
656 op
= nir_intrinsic_atomic_counter_read_var
;
657 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_increment") == 0) {
658 op
= nir_intrinsic_atomic_counter_inc_var
;
659 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_predecrement") == 0) {
660 op
= nir_intrinsic_atomic_counter_dec_var
;
661 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_load") == 0) {
662 op
= nir_intrinsic_image_load
;
663 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_store") == 0) {
664 op
= nir_intrinsic_image_store
;
665 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_add") == 0) {
666 op
= nir_intrinsic_image_atomic_add
;
667 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_min") == 0) {
668 op
= nir_intrinsic_image_atomic_min
;
669 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_max") == 0) {
670 op
= nir_intrinsic_image_atomic_max
;
671 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_and") == 0) {
672 op
= nir_intrinsic_image_atomic_and
;
673 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_or") == 0) {
674 op
= nir_intrinsic_image_atomic_or
;
675 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_xor") == 0) {
676 op
= nir_intrinsic_image_atomic_xor
;
677 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_exchange") == 0) {
678 op
= nir_intrinsic_image_atomic_exchange
;
679 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_comp_swap") == 0) {
680 op
= nir_intrinsic_image_atomic_comp_swap
;
681 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier") == 0) {
682 op
= nir_intrinsic_memory_barrier
;
683 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_size") == 0) {
684 op
= nir_intrinsic_image_size
;
685 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_samples") == 0) {
686 op
= nir_intrinsic_image_samples
;
687 } else if (strcmp(ir
->callee_name(), "__intrinsic_store_ssbo") == 0) {
688 op
= nir_intrinsic_store_ssbo
;
689 } else if (strcmp(ir
->callee_name(), "__intrinsic_load_ssbo") == 0) {
690 op
= nir_intrinsic_load_ssbo
;
691 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_add_ssbo") == 0) {
692 op
= nir_intrinsic_ssbo_atomic_add
;
693 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_and_ssbo") == 0) {
694 op
= nir_intrinsic_ssbo_atomic_and
;
695 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_or_ssbo") == 0) {
696 op
= nir_intrinsic_ssbo_atomic_or
;
697 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_xor_ssbo") == 0) {
698 op
= nir_intrinsic_ssbo_atomic_xor
;
699 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_min_ssbo") == 0) {
700 assert(ir
->return_deref
);
701 if (ir
->return_deref
->type
== glsl_type::int_type
)
702 op
= nir_intrinsic_ssbo_atomic_imin
;
703 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
704 op
= nir_intrinsic_ssbo_atomic_umin
;
706 unreachable("Invalid type");
707 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_max_ssbo") == 0) {
708 assert(ir
->return_deref
);
709 if (ir
->return_deref
->type
== glsl_type::int_type
)
710 op
= nir_intrinsic_ssbo_atomic_imax
;
711 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
712 op
= nir_intrinsic_ssbo_atomic_umax
;
714 unreachable("Invalid type");
715 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_exchange_ssbo") == 0) {
716 op
= nir_intrinsic_ssbo_atomic_exchange
;
717 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_comp_swap_ssbo") == 0) {
718 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
719 } else if (strcmp(ir
->callee_name(), "__intrinsic_shader_clock") == 0) {
720 op
= nir_intrinsic_shader_clock
;
721 } else if (strcmp(ir
->callee_name(), "__intrinsic_group_memory_barrier") == 0) {
722 op
= nir_intrinsic_group_memory_barrier
;
723 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier_atomic_counter") == 0) {
724 op
= nir_intrinsic_memory_barrier_atomic_counter
;
725 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier_buffer") == 0) {
726 op
= nir_intrinsic_memory_barrier_buffer
;
727 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier_image") == 0) {
728 op
= nir_intrinsic_memory_barrier_image
;
729 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier_shared") == 0) {
730 op
= nir_intrinsic_memory_barrier_shared
;
731 } else if (strcmp(ir
->callee_name(), "__intrinsic_load_shared") == 0) {
732 op
= nir_intrinsic_load_shared
;
733 } else if (strcmp(ir
->callee_name(), "__intrinsic_store_shared") == 0) {
734 op
= nir_intrinsic_store_shared
;
735 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_add_shared") == 0) {
736 op
= nir_intrinsic_shared_atomic_add
;
737 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_and_shared") == 0) {
738 op
= nir_intrinsic_shared_atomic_and
;
739 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_or_shared") == 0) {
740 op
= nir_intrinsic_shared_atomic_or
;
741 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_xor_shared") == 0) {
742 op
= nir_intrinsic_shared_atomic_xor
;
743 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_min_shared") == 0) {
744 assert(ir
->return_deref
);
745 if (ir
->return_deref
->type
== glsl_type::int_type
)
746 op
= nir_intrinsic_shared_atomic_imin
;
747 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
748 op
= nir_intrinsic_shared_atomic_umin
;
750 unreachable("Invalid type");
751 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_max_shared") == 0) {
752 assert(ir
->return_deref
);
753 if (ir
->return_deref
->type
== glsl_type::int_type
)
754 op
= nir_intrinsic_shared_atomic_imax
;
755 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
756 op
= nir_intrinsic_shared_atomic_umax
;
758 unreachable("Invalid type");
759 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_exchange_shared") == 0) {
760 op
= nir_intrinsic_shared_atomic_exchange
;
761 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_comp_swap_shared") == 0) {
762 op
= nir_intrinsic_shared_atomic_comp_swap
;
764 unreachable("not reached");
767 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
768 nir_dest
*dest
= &instr
->dest
;
771 case nir_intrinsic_atomic_counter_read_var
:
772 case nir_intrinsic_atomic_counter_inc_var
:
773 case nir_intrinsic_atomic_counter_dec_var
: {
774 ir_dereference
*param
=
775 (ir_dereference
*) ir
->actual_parameters
.get_head();
776 instr
->variables
[0] = evaluate_deref(&instr
->instr
, param
);
777 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, NULL
);
778 nir_builder_instr_insert(&b
, &instr
->instr
);
781 case nir_intrinsic_image_load
:
782 case nir_intrinsic_image_store
:
783 case nir_intrinsic_image_atomic_add
:
784 case nir_intrinsic_image_atomic_min
:
785 case nir_intrinsic_image_atomic_max
:
786 case nir_intrinsic_image_atomic_and
:
787 case nir_intrinsic_image_atomic_or
:
788 case nir_intrinsic_image_atomic_xor
:
789 case nir_intrinsic_image_atomic_exchange
:
790 case nir_intrinsic_image_atomic_comp_swap
:
791 case nir_intrinsic_image_samples
:
792 case nir_intrinsic_image_size
: {
793 nir_ssa_undef_instr
*instr_undef
=
794 nir_ssa_undef_instr_create(shader
, 1);
795 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
797 /* Set the image variable dereference. */
798 exec_node
*param
= ir
->actual_parameters
.get_head();
799 ir_dereference
*image
= (ir_dereference
*)param
;
800 const glsl_type
*type
=
801 image
->variable_referenced()->type
->without_array();
803 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
804 param
= param
->get_next();
806 /* Set the intrinsic destination. */
807 if (ir
->return_deref
) {
808 const nir_intrinsic_info
*info
=
809 &nir_intrinsic_infos
[instr
->intrinsic
];
810 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
811 info
->dest_components
, NULL
);
814 if (op
== nir_intrinsic_image_size
||
815 op
== nir_intrinsic_image_samples
) {
816 nir_builder_instr_insert(&b
, &instr
->instr
);
820 /* Set the address argument, extending the coordinate vector to four
823 nir_ssa_def
*src_addr
=
824 evaluate_rvalue((ir_dereference
*)param
);
825 nir_ssa_def
*srcs
[4];
827 for (int i
= 0; i
< 4; i
++) {
828 if (i
< type
->coordinate_components())
829 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
831 srcs
[i
] = &instr_undef
->def
;
834 instr
->src
[0] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
835 param
= param
->get_next();
837 /* Set the sample argument, which is undefined for single-sample
840 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
842 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
843 param
= param
->get_next();
845 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
848 /* Set the intrinsic parameters. */
849 if (!param
->is_tail_sentinel()) {
851 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
852 param
= param
->get_next();
855 if (!param
->is_tail_sentinel()) {
857 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
858 param
= param
->get_next();
860 nir_builder_instr_insert(&b
, &instr
->instr
);
863 case nir_intrinsic_memory_barrier
:
864 case nir_intrinsic_group_memory_barrier
:
865 case nir_intrinsic_memory_barrier_atomic_counter
:
866 case nir_intrinsic_memory_barrier_buffer
:
867 case nir_intrinsic_memory_barrier_image
:
868 case nir_intrinsic_memory_barrier_shared
:
869 nir_builder_instr_insert(&b
, &instr
->instr
);
871 case nir_intrinsic_shader_clock
:
872 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, NULL
);
873 nir_builder_instr_insert(&b
, &instr
->instr
);
875 case nir_intrinsic_store_ssbo
: {
876 exec_node
*param
= ir
->actual_parameters
.get_head();
877 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
879 param
= param
->get_next();
880 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
882 param
= param
->get_next();
883 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
885 param
= param
->get_next();
886 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
889 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
890 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
891 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
892 instr
->const_index
[0] = write_mask
->value
.u
[0];
893 instr
->num_components
= val
->type
->vector_elements
;
895 nir_builder_instr_insert(&b
, &instr
->instr
);
898 case nir_intrinsic_load_ssbo
: {
899 exec_node
*param
= ir
->actual_parameters
.get_head();
900 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
902 param
= param
->get_next();
903 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
905 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
906 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
908 const glsl_type
*type
= ir
->return_deref
->var
->type
;
909 instr
->num_components
= type
->vector_elements
;
911 /* Setup destination register */
912 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
913 type
->vector_elements
, NULL
);
915 /* Insert the created nir instruction now since in the case of boolean
916 * result we will need to emit another instruction after it
918 nir_builder_instr_insert(&b
, &instr
->instr
);
921 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
922 * consider a true boolean to be ~0. Fix this up with a != 0
925 if (type
->base_type
== GLSL_TYPE_BOOL
) {
926 nir_alu_instr
*load_ssbo_compare
=
927 nir_alu_instr_create(shader
, nir_op_ine
);
928 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
929 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
930 load_ssbo_compare
->src
[1].src
=
931 nir_src_for_ssa(nir_imm_int(&b
, 0));
932 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
933 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
934 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
935 &load_ssbo_compare
->dest
.dest
,
936 type
->vector_elements
, NULL
);
937 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
938 nir_builder_instr_insert(&b
, &load_ssbo_compare
->instr
);
939 dest
= &load_ssbo_compare
->dest
.dest
;
943 case nir_intrinsic_ssbo_atomic_add
:
944 case nir_intrinsic_ssbo_atomic_imin
:
945 case nir_intrinsic_ssbo_atomic_umin
:
946 case nir_intrinsic_ssbo_atomic_imax
:
947 case nir_intrinsic_ssbo_atomic_umax
:
948 case nir_intrinsic_ssbo_atomic_and
:
949 case nir_intrinsic_ssbo_atomic_or
:
950 case nir_intrinsic_ssbo_atomic_xor
:
951 case nir_intrinsic_ssbo_atomic_exchange
:
952 case nir_intrinsic_ssbo_atomic_comp_swap
: {
953 int param_count
= ir
->actual_parameters
.length();
954 assert(param_count
== 3 || param_count
== 4);
957 exec_node
*param
= ir
->actual_parameters
.get_head();
958 ir_instruction
*inst
= (ir_instruction
*) param
;
959 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
962 param
= param
->get_next();
963 inst
= (ir_instruction
*) param
;
964 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
966 /* data1 parameter (this is always present) */
967 param
= param
->get_next();
968 inst
= (ir_instruction
*) param
;
969 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
971 /* data2 parameter (only with atomic_comp_swap) */
972 if (param_count
== 4) {
973 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
974 param
= param
->get_next();
975 inst
= (ir_instruction
*) param
;
976 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
980 assert(ir
->return_deref
);
981 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
982 ir
->return_deref
->type
->vector_elements
, NULL
);
983 nir_builder_instr_insert(&b
, &instr
->instr
);
986 case nir_intrinsic_load_shared
: {
987 exec_node
*param
= ir
->actual_parameters
.get_head();
988 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
990 instr
->const_index
[0] = 0;
991 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
993 const glsl_type
*type
= ir
->return_deref
->var
->type
;
994 instr
->num_components
= type
->vector_elements
;
996 /* Setup destination register */
997 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
998 type
->vector_elements
, NULL
);
1000 nir_builder_instr_insert(&b
, &instr
->instr
);
1003 case nir_intrinsic_store_shared
: {
1004 exec_node
*param
= ir
->actual_parameters
.get_head();
1005 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1007 param
= param
->get_next();
1008 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1010 param
= param
->get_next();
1011 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1014 instr
->const_index
[0] = 0;
1015 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1017 instr
->const_index
[1] = write_mask
->value
.u
[0];
1019 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(val
));
1020 instr
->num_components
= val
->type
->vector_elements
;
1022 nir_builder_instr_insert(&b
, &instr
->instr
);
1025 case nir_intrinsic_shared_atomic_add
:
1026 case nir_intrinsic_shared_atomic_imin
:
1027 case nir_intrinsic_shared_atomic_umin
:
1028 case nir_intrinsic_shared_atomic_imax
:
1029 case nir_intrinsic_shared_atomic_umax
:
1030 case nir_intrinsic_shared_atomic_and
:
1031 case nir_intrinsic_shared_atomic_or
:
1032 case nir_intrinsic_shared_atomic_xor
:
1033 case nir_intrinsic_shared_atomic_exchange
:
1034 case nir_intrinsic_shared_atomic_comp_swap
: {
1035 int param_count
= ir
->actual_parameters
.length();
1036 assert(param_count
== 2 || param_count
== 3);
1039 exec_node
*param
= ir
->actual_parameters
.get_head();
1040 ir_instruction
*inst
= (ir_instruction
*) param
;
1041 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1043 /* data1 parameter (this is always present) */
1044 param
= param
->get_next();
1045 inst
= (ir_instruction
*) param
;
1046 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1048 /* data2 parameter (only with atomic_comp_swap) */
1049 if (param_count
== 3) {
1050 assert(op
== nir_intrinsic_shared_atomic_comp_swap
);
1051 param
= param
->get_next();
1052 inst
= (ir_instruction
*) param
;
1054 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1058 assert(ir
->return_deref
);
1059 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1060 ir
->return_deref
->type
->vector_elements
, NULL
);
1061 nir_builder_instr_insert(&b
, &instr
->instr
);
1065 unreachable("not reached");
1068 if (ir
->return_deref
) {
1069 nir_intrinsic_instr
*store_instr
=
1070 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
1071 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1072 store_instr
->const_index
[0] = (1 << store_instr
->num_components
) - 1;
1074 store_instr
->variables
[0] =
1075 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
1076 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
1078 nir_builder_instr_insert(&b
, &store_instr
->instr
);
1084 struct hash_entry
*entry
=
1085 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1087 nir_function
*callee
= (nir_function
*) entry
->data
;
1089 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
1092 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
1093 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
1097 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
1098 nir_builder_instr_insert(&b
, &instr
->instr
);
1102 nir_visitor::visit(ir_assignment
*ir
)
1104 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1106 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1107 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1108 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1109 nir_intrinsic_instr
*copy
=
1110 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1112 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1113 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1115 if (ir
->condition
) {
1116 nir_if
*if_stmt
= nir_if_create(this->shader
);
1117 if_stmt
->condition
= nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
1118 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
1119 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, ©
->instr
);
1120 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
1122 nir_builder_instr_insert(&b
, ©
->instr
);
1127 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1129 ir
->lhs
->accept(this);
1130 nir_deref_var
*lhs_deref
= this->deref_head
;
1131 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1133 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1134 /* GLSL IR will give us the input to the write-masked assignment in a
1135 * single packed vector. So, for example, if the writemask is xzw, then
1136 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1140 unsigned component
= 0;
1141 for (unsigned i
= 0; i
< 4; i
++) {
1142 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1144 src
= nir_swizzle(&b
, src
, swiz
, num_components
, !supports_ints
);
1147 nir_intrinsic_instr
*store
=
1148 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1149 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1150 store
->const_index
[0] = ir
->write_mask
;
1151 nir_deref
*store_deref
= nir_copy_deref(store
, &lhs_deref
->deref
);
1152 store
->variables
[0] = nir_deref_as_var(store_deref
);
1153 store
->src
[0] = nir_src_for_ssa(src
);
1155 if (ir
->condition
) {
1156 nir_if
*if_stmt
= nir_if_create(this->shader
);
1157 if_stmt
->condition
= nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
1158 nir_builder_cf_insert(&b
, &if_stmt
->cf_node
);
1159 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, &store
->instr
);
1160 b
.cursor
= nir_after_cf_node(&if_stmt
->cf_node
);
1162 nir_builder_instr_insert(&b
, &store
->instr
);
1167 * Given an instruction, returns a pointer to its destination or NULL if there
1168 * is no destination.
1170 * Note that this only handles instructions we generate at this level.
1173 get_instr_dest(nir_instr
*instr
)
1175 nir_alu_instr
*alu_instr
;
1176 nir_intrinsic_instr
*intrinsic_instr
;
1177 nir_tex_instr
*tex_instr
;
1179 switch (instr
->type
) {
1180 case nir_instr_type_alu
:
1181 alu_instr
= nir_instr_as_alu(instr
);
1182 return &alu_instr
->dest
.dest
;
1184 case nir_instr_type_intrinsic
:
1185 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1186 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1187 return &intrinsic_instr
->dest
;
1191 case nir_instr_type_tex
:
1192 tex_instr
= nir_instr_as_tex(instr
);
1193 return &tex_instr
->dest
;
1196 unreachable("not reached");
1203 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
)
1205 nir_dest
*dest
= get_instr_dest(instr
);
1208 nir_ssa_dest_init(instr
, dest
, num_components
, NULL
);
1210 nir_builder_instr_insert(&b
, instr
);
1213 assert(dest
->is_ssa
);
1214 this->result
= &dest
->ssa
;
1219 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1222 if (ir
->as_dereference() || ir
->as_constant()) {
1224 * A dereference is being used on the right hand side, which means we
1225 * must emit a variable load.
1228 nir_intrinsic_instr
*load_instr
=
1229 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1230 load_instr
->num_components
= ir
->type
->vector_elements
;
1231 load_instr
->variables
[0] = this->deref_head
;
1232 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1233 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
);
1236 return this->result
;
1240 nir_visitor::visit(ir_expression
*ir
)
1242 /* Some special cases */
1243 switch (ir
->operation
) {
1244 case ir_binop_ubo_load
: {
1245 nir_intrinsic_instr
*load
=
1246 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1247 load
->num_components
= ir
->type
->vector_elements
;
1248 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1249 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1250 add_instr(&load
->instr
, ir
->type
->vector_elements
);
1253 * In UBO's, a true boolean value is any non-zero value, but we consider
1254 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1257 if (ir
->type
->base_type
== GLSL_TYPE_BOOL
)
1258 this->result
= nir_ine(&b
, &load
->dest
.ssa
, nir_imm_int(&b
, 0));
1263 case ir_unop_interpolate_at_centroid
:
1264 case ir_binop_interpolate_at_offset
:
1265 case ir_binop_interpolate_at_sample
: {
1266 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1267 ir_swizzle
*swizzle
= NULL
;
1269 /* the api does not allow a swizzle here, but the varying packing code
1270 * may have pushed one into here.
1272 swizzle
= ir
->operands
[0]->as_swizzle();
1274 deref
= swizzle
->val
->as_dereference();
1278 deref
->accept(this);
1280 nir_intrinsic_op op
;
1281 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1282 switch (ir
->operation
) {
1283 case ir_unop_interpolate_at_centroid
:
1284 op
= nir_intrinsic_interp_var_at_centroid
;
1286 case ir_binop_interpolate_at_offset
:
1287 op
= nir_intrinsic_interp_var_at_offset
;
1289 case ir_binop_interpolate_at_sample
:
1290 op
= nir_intrinsic_interp_var_at_sample
;
1293 unreachable("Invalid interpolation intrinsic");
1296 /* This case can happen if the vertex shader does not write the
1297 * given varying. In this case, the linker will lower it to a
1298 * global variable. Since interpolating a variable makes no
1299 * sense, we'll just turn it into a load which will probably
1300 * eventually end up as an SSA definition.
1302 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1303 op
= nir_intrinsic_load_var
;
1306 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1307 intrin
->num_components
= deref
->type
->vector_elements
;
1308 intrin
->variables
[0] = this->deref_head
;
1309 ralloc_steal(intrin
, intrin
->variables
[0]);
1311 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1312 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1313 intrin
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1315 add_instr(&intrin
->instr
, deref
->type
->vector_elements
);
1318 unsigned swiz
[4] = {
1319 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1322 result
= nir_swizzle(&b
, result
, swiz
,
1323 swizzle
->type
->vector_elements
, false);
1333 nir_ssa_def
*srcs
[4];
1334 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1335 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1337 glsl_base_type types
[4];
1338 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1340 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1342 types
[i
] = GLSL_TYPE_FLOAT
;
1344 glsl_base_type out_type
;
1346 out_type
= ir
->type
->base_type
;
1348 out_type
= GLSL_TYPE_FLOAT
;
1350 switch (ir
->operation
) {
1351 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1352 case ir_unop_logic_not
:
1353 result
= supports_ints
? nir_inot(&b
, srcs
[0]) : nir_fnot(&b
, srcs
[0]);
1356 result
= (types
[0] == GLSL_TYPE_FLOAT
) ? nir_fneg(&b
, srcs
[0])
1357 : nir_ineg(&b
, srcs
[0]);
1360 result
= (types
[0] == GLSL_TYPE_FLOAT
) ? nir_fabs(&b
, srcs
[0])
1361 : nir_iabs(&b
, srcs
[0]);
1363 case ir_unop_saturate
:
1364 assert(types
[0] == GLSL_TYPE_FLOAT
);
1365 result
= nir_fsat(&b
, srcs
[0]);
1368 result
= (types
[0] == GLSL_TYPE_FLOAT
) ? nir_fsign(&b
, srcs
[0])
1369 : nir_isign(&b
, srcs
[0]);
1371 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1372 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1373 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1374 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1375 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1376 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1377 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
1379 result
= supports_ints
? nir_i2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1382 result
= supports_ints
? nir_u2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1385 result
= supports_ints
? nir_b2f(&b
, srcs
[0]) : nir_fmov(&b
, srcs
[0]);
1387 case ir_unop_f2i
: result
= nir_f2i(&b
, srcs
[0]); break;
1388 case ir_unop_f2u
: result
= nir_f2u(&b
, srcs
[0]); break;
1389 case ir_unop_f2b
: result
= nir_f2b(&b
, srcs
[0]); break;
1390 case ir_unop_i2b
: result
= nir_i2b(&b
, srcs
[0]); break;
1391 case ir_unop_b2i
: result
= nir_b2i(&b
, srcs
[0]); break;
1394 case ir_unop_bitcast_i2f
:
1395 case ir_unop_bitcast_f2i
:
1396 case ir_unop_bitcast_u2f
:
1397 case ir_unop_bitcast_f2u
:
1398 case ir_unop_subroutine_to_int
:
1400 result
= nir_imov(&b
, srcs
[0]);
1402 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
1403 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
1404 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
1405 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
1406 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
1407 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
1408 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
1409 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
1410 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
1411 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
1412 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
1413 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
1414 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
1415 case ir_unop_pack_snorm_2x16
:
1416 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
1418 case ir_unop_pack_snorm_4x8
:
1419 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
1421 case ir_unop_pack_unorm_2x16
:
1422 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
1424 case ir_unop_pack_unorm_4x8
:
1425 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
1427 case ir_unop_pack_half_2x16
:
1428 result
= nir_pack_half_2x16(&b
, srcs
[0]);
1430 case ir_unop_unpack_snorm_2x16
:
1431 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
1433 case ir_unop_unpack_snorm_4x8
:
1434 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
1436 case ir_unop_unpack_unorm_2x16
:
1437 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
1439 case ir_unop_unpack_unorm_4x8
:
1440 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
1442 case ir_unop_unpack_half_2x16
:
1443 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
1445 case ir_unop_bitfield_reverse
:
1446 result
= nir_bitfield_reverse(&b
, srcs
[0]);
1448 case ir_unop_bit_count
:
1449 result
= nir_bit_count(&b
, srcs
[0]);
1451 case ir_unop_find_msb
:
1453 case GLSL_TYPE_UINT
:
1454 result
= nir_ufind_msb(&b
, srcs
[0]);
1457 result
= nir_ifind_msb(&b
, srcs
[0]);
1460 unreachable("Invalid type for findMSB()");
1463 case ir_unop_find_lsb
:
1464 result
= nir_find_lsb(&b
, srcs
[0]);
1468 switch (ir
->type
->vector_elements
) {
1470 switch (ir
->operands
[0]->type
->vector_elements
) {
1471 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
1472 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
1473 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
1474 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
1475 default: unreachable("not reached");
1479 switch (ir
->operands
[0]->type
->vector_elements
) {
1480 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
1481 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
1482 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
1483 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
1484 default: unreachable("not reached");
1488 switch (ir
->operands
[0]->type
->vector_elements
) {
1489 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
1490 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
1491 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
1492 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
1493 default: unreachable("not reached");
1497 switch (ir
->operands
[0]->type
->vector_elements
) {
1498 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
1499 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
1500 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
1501 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
1502 default: unreachable("not reached");
1506 unreachable("not reached");
1509 case ir_unop_get_buffer_size
: {
1510 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1512 nir_intrinsic_get_buffer_size
);
1513 load
->num_components
= ir
->type
->vector_elements
;
1514 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1515 add_instr(&load
->instr
, ir
->type
->vector_elements
);
1520 result
= (out_type
== GLSL_TYPE_FLOAT
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
1521 : nir_iadd(&b
, srcs
[0], srcs
[1]);
1524 result
= (out_type
== GLSL_TYPE_FLOAT
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
1525 : nir_isub(&b
, srcs
[0], srcs
[1]);
1528 result
= (out_type
== GLSL_TYPE_FLOAT
) ? nir_fmul(&b
, srcs
[0], srcs
[1])
1529 : nir_imul(&b
, srcs
[0], srcs
[1]);
1532 if (out_type
== GLSL_TYPE_FLOAT
)
1533 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
1534 else if (out_type
== GLSL_TYPE_INT
)
1535 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
1537 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
1540 result
= (out_type
== GLSL_TYPE_FLOAT
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
1541 : nir_umod(&b
, srcs
[0], srcs
[1]);
1544 if (out_type
== GLSL_TYPE_FLOAT
)
1545 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
1546 else if (out_type
== GLSL_TYPE_INT
)
1547 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
1549 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
1552 if (out_type
== GLSL_TYPE_FLOAT
)
1553 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
1554 else if (out_type
== GLSL_TYPE_INT
)
1555 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
1557 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
1559 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
1560 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
1561 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
1562 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
1563 case ir_binop_logic_and
:
1564 result
= supports_ints
? nir_iand(&b
, srcs
[0], srcs
[1])
1565 : nir_fand(&b
, srcs
[0], srcs
[1]);
1567 case ir_binop_logic_or
:
1568 result
= supports_ints
? nir_ior(&b
, srcs
[0], srcs
[1])
1569 : nir_for(&b
, srcs
[0], srcs
[1]);
1571 case ir_binop_logic_xor
:
1572 result
= supports_ints
? nir_ixor(&b
, srcs
[0], srcs
[1])
1573 : nir_fxor(&b
, srcs
[0], srcs
[1]);
1575 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
1576 case ir_binop_rshift
:
1577 result
= (out_type
== GLSL_TYPE_INT
) ? nir_ishr(&b
, srcs
[0], srcs
[1])
1578 : nir_ushr(&b
, srcs
[0], srcs
[1]);
1580 case ir_binop_imul_high
:
1581 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
1582 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
1584 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
1585 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
1587 if (supports_ints
) {
1588 if (types
[0] == GLSL_TYPE_FLOAT
)
1589 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
1590 else if (types
[0] == GLSL_TYPE_INT
)
1591 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
1593 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
1595 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1598 case ir_binop_greater
:
1599 if (supports_ints
) {
1600 if (types
[0] == GLSL_TYPE_FLOAT
)
1601 result
= nir_flt(&b
, srcs
[1], srcs
[0]);
1602 else if (types
[0] == GLSL_TYPE_INT
)
1603 result
= nir_ilt(&b
, srcs
[1], srcs
[0]);
1605 result
= nir_ult(&b
, srcs
[1], srcs
[0]);
1607 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1610 case ir_binop_lequal
:
1611 if (supports_ints
) {
1612 if (types
[0] == GLSL_TYPE_FLOAT
)
1613 result
= nir_fge(&b
, srcs
[1], srcs
[0]);
1614 else if (types
[0] == GLSL_TYPE_INT
)
1615 result
= nir_ige(&b
, srcs
[1], srcs
[0]);
1617 result
= nir_uge(&b
, srcs
[1], srcs
[0]);
1619 result
= nir_slt(&b
, srcs
[1], srcs
[0]);
1622 case ir_binop_gequal
:
1623 if (supports_ints
) {
1624 if (types
[0] == GLSL_TYPE_FLOAT
)
1625 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
1626 else if (types
[0] == GLSL_TYPE_INT
)
1627 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
1629 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
1631 result
= nir_slt(&b
, srcs
[0], srcs
[1]);
1634 case ir_binop_equal
:
1635 if (supports_ints
) {
1636 if (types
[0] == GLSL_TYPE_FLOAT
)
1637 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
1639 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
1641 result
= nir_seq(&b
, srcs
[0], srcs
[1]);
1644 case ir_binop_nequal
:
1645 if (supports_ints
) {
1646 if (types
[0] == GLSL_TYPE_FLOAT
)
1647 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
1649 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
1651 result
= nir_sne(&b
, srcs
[0], srcs
[1]);
1654 case ir_binop_all_equal
:
1655 if (supports_ints
) {
1656 if (types
[0] == GLSL_TYPE_FLOAT
) {
1657 switch (ir
->operands
[0]->type
->vector_elements
) {
1658 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
1659 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
1660 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
1661 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
1663 unreachable("not reached");
1666 switch (ir
->operands
[0]->type
->vector_elements
) {
1667 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
1668 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
1669 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
1670 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
1672 unreachable("not reached");
1676 switch (ir
->operands
[0]->type
->vector_elements
) {
1677 case 1: result
= nir_seq(&b
, srcs
[0], srcs
[1]); break;
1678 case 2: result
= nir_fall_equal2(&b
, srcs
[0], srcs
[1]); break;
1679 case 3: result
= nir_fall_equal3(&b
, srcs
[0], srcs
[1]); break;
1680 case 4: result
= nir_fall_equal4(&b
, srcs
[0], srcs
[1]); break;
1682 unreachable("not reached");
1686 case ir_binop_any_nequal
:
1687 if (supports_ints
) {
1688 if (types
[0] == GLSL_TYPE_FLOAT
) {
1689 switch (ir
->operands
[0]->type
->vector_elements
) {
1690 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
1691 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
1692 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
1693 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
1695 unreachable("not reached");
1698 switch (ir
->operands
[0]->type
->vector_elements
) {
1699 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
1700 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
1701 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
1702 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
1704 unreachable("not reached");
1708 switch (ir
->operands
[0]->type
->vector_elements
) {
1709 case 1: result
= nir_sne(&b
, srcs
[0], srcs
[1]); break;
1710 case 2: result
= nir_fany_nequal2(&b
, srcs
[0], srcs
[1]); break;
1711 case 3: result
= nir_fany_nequal3(&b
, srcs
[0], srcs
[1]); break;
1712 case 4: result
= nir_fany_nequal4(&b
, srcs
[0], srcs
[1]); break;
1714 unreachable("not reached");
1719 switch (ir
->operands
[0]->type
->vector_elements
) {
1720 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
1721 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
1722 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
1724 unreachable("not reached");
1728 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
1730 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
1733 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
1737 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1739 result
= nir_fcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
1741 case ir_triop_bitfield_extract
:
1742 result
= (out_type
== GLSL_TYPE_INT
) ?
1743 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
1744 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
1746 case ir_quadop_bitfield_insert
:
1747 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
1749 case ir_quadop_vector
:
1750 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
1754 unreachable("not reached");
1759 nir_visitor::visit(ir_swizzle
*ir
)
1761 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1762 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
1763 ir
->type
->vector_elements
, !supports_ints
);
1767 nir_visitor::visit(ir_texture
*ir
)
1774 num_srcs
= 1; /* coordinate */
1779 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1780 num_srcs
= 2; /* coordinate, bias/lod */
1784 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1790 if (ir
->lod_info
.lod
!= NULL
)
1791 num_srcs
= 2; /* coordinate, lod */
1793 num_srcs
= 1; /* coordinate */
1797 op
= nir_texop_txf_ms
;
1798 num_srcs
= 2; /* coordinate, sample_index */
1803 if (ir
->lod_info
.lod
!= NULL
)
1804 num_srcs
= 1; /* lod */
1811 num_srcs
= 1; /* coordinate */
1816 num_srcs
= 1; /* coordinate */
1819 case ir_query_levels
:
1820 op
= nir_texop_query_levels
;
1824 case ir_texture_samples
:
1825 op
= nir_texop_texture_samples
;
1829 case ir_samples_identical
:
1830 op
= nir_texop_samples_identical
;
1831 num_srcs
= 1; /* coordinate */
1835 unreachable("not reached");
1838 if (ir
->projector
!= NULL
)
1840 if (ir
->shadow_comparitor
!= NULL
)
1842 if (ir
->offset
!= NULL
&& ir
->offset
->as_constant() == NULL
)
1845 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
1848 instr
->sampler_dim
=
1849 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
1850 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
1851 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
1852 if (instr
->is_shadow
)
1853 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
1854 switch (ir
->type
->base_type
) {
1855 case GLSL_TYPE_FLOAT
:
1856 instr
->dest_type
= nir_type_float
;
1859 instr
->dest_type
= nir_type_int
;
1861 case GLSL_TYPE_BOOL
:
1862 case GLSL_TYPE_UINT
:
1863 instr
->dest_type
= nir_type_uint
;
1866 unreachable("not reached");
1869 instr
->sampler
= evaluate_deref(&instr
->instr
, ir
->sampler
);
1871 unsigned src_number
= 0;
1873 if (ir
->coordinate
!= NULL
) {
1874 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
1875 instr
->src
[src_number
].src
=
1876 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
1877 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
1881 if (ir
->projector
!= NULL
) {
1882 instr
->src
[src_number
].src
=
1883 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
1884 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
1888 if (ir
->shadow_comparitor
!= NULL
) {
1889 instr
->src
[src_number
].src
=
1890 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparitor
));
1891 instr
->src
[src_number
].src_type
= nir_tex_src_comparitor
;
1895 if (ir
->offset
!= NULL
) {
1896 /* we don't support multiple offsets yet */
1897 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
1899 ir_constant
*const_offset
= ir
->offset
->as_constant();
1900 if (const_offset
!= NULL
) {
1901 for (unsigned i
= 0; i
< const_offset
->type
->vector_elements
; i
++)
1902 instr
->const_offset
[i
] = const_offset
->value
.i
[i
];
1904 instr
->src
[src_number
].src
=
1905 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
1906 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
1913 instr
->src
[src_number
].src
=
1914 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
1915 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
1922 if (ir
->lod_info
.lod
!= NULL
) {
1923 instr
->src
[src_number
].src
=
1924 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
1925 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
1931 instr
->src
[src_number
].src
=
1932 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
1933 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
1935 instr
->src
[src_number
].src
=
1936 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
1937 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
1942 instr
->src
[src_number
].src
=
1943 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
1944 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
1949 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
1956 assert(src_number
== num_srcs
);
1958 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
));
1962 nir_visitor::visit(ir_constant
*ir
)
1965 * We don't know if this variable is an an array or struct that gets
1966 * dereferenced, so do the safe thing an make it a variable with a
1967 * constant initializer and return a dereference.
1971 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
1972 var
->data
.read_only
= true;
1973 var
->constant_initializer
= constant_copy(ir
, var
);
1975 this->deref_head
= nir_deref_var_create(this->shader
, var
);
1976 this->deref_tail
= &this->deref_head
->deref
;
1980 nir_visitor::visit(ir_dereference_variable
*ir
)
1982 struct hash_entry
*entry
=
1983 _mesa_hash_table_search(this->var_table
, ir
->var
);
1985 nir_variable
*var
= (nir_variable
*) entry
->data
;
1987 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
1988 this->deref_head
= deref
;
1989 this->deref_tail
= &deref
->deref
;
1993 nir_visitor::visit(ir_dereference_record
*ir
)
1995 ir
->record
->accept(this);
1997 int field_index
= this->deref_tail
->type
->field_index(ir
->field
);
1998 assert(field_index
>= 0);
2000 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2001 deref
->deref
.type
= ir
->type
;
2002 this->deref_tail
->child
= &deref
->deref
;
2003 this->deref_tail
= &deref
->deref
;
2007 nir_visitor::visit(ir_dereference_array
*ir
)
2009 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2010 deref
->deref
.type
= ir
->type
;
2012 ir_constant
*const_index
= ir
->array_index
->as_constant();
2013 if (const_index
!= NULL
) {
2014 deref
->deref_array_type
= nir_deref_array_type_direct
;
2015 deref
->base_offset
= const_index
->value
.u
[0];
2017 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2019 nir_src_for_ssa(evaluate_rvalue(ir
->array_index
));
2022 ir
->array
->accept(this);
2024 this->deref_tail
->child
= &deref
->deref
;
2025 ralloc_steal(this->deref_tail
, deref
);
2026 this->deref_tail
= &deref
->deref
;
2030 nir_visitor::visit(ir_barrier
*ir
)
2032 nir_intrinsic_instr
*instr
=
2033 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2034 nir_builder_instr_insert(&b
, &instr
->instr
);