2 * Copyright © 2014 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 * Connor Abbott (cwabbott0@gmail.com)
28 #include "glsl_to_nir.h"
29 #include "nir_control_flow.h"
30 #include "ir_visitor.h"
31 #include "ir_hierarchical_visitor.h"
35 * pass to lower GLSL IR to NIR
37 * This will lower variable dereferences to loads/stores of corresponding
38 * variables in NIR - the variables will be converted to registers in a later
44 class nir_visitor
: public ir_visitor
47 nir_visitor(nir_shader
*shader
);
50 virtual void visit(ir_variable
*);
51 virtual void visit(ir_function
*);
52 virtual void visit(ir_function_signature
*);
53 virtual void visit(ir_loop
*);
54 virtual void visit(ir_if
*);
55 virtual void visit(ir_discard
*);
56 virtual void visit(ir_loop_jump
*);
57 virtual void visit(ir_return
*);
58 virtual void visit(ir_call
*);
59 virtual void visit(ir_assignment
*);
60 virtual void visit(ir_emit_vertex
*);
61 virtual void visit(ir_end_primitive
*);
62 virtual void visit(ir_expression
*);
63 virtual void visit(ir_swizzle
*);
64 virtual void visit(ir_texture
*);
65 virtual void visit(ir_constant
*);
66 virtual void visit(ir_dereference_variable
*);
67 virtual void visit(ir_dereference_record
*);
68 virtual void visit(ir_dereference_array
*);
69 virtual void visit(ir_barrier
*);
71 void create_function(ir_function
*ir
);
74 void create_overload(ir_function_signature
*ir
, nir_function
*function
);
75 void add_instr(nir_instr
*instr
, unsigned num_components
);
76 nir_src
evaluate_rvalue(ir_rvalue
*ir
);
78 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_src
*srcs
);
79 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_src src1
);
80 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_src src1
,
82 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_src src1
,
83 nir_src src2
, nir_src src3
);
88 nir_function_impl
*impl
;
89 exec_list
*cf_node_list
;
90 nir_instr
*result
; /* result of the expression tree last visited */
92 nir_deref_var
*evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
);
94 /* the head of the dereference chain we're creating */
95 nir_deref_var
*deref_head
;
96 /* the tail of the dereference chain we're creating */
97 nir_deref
*deref_tail
;
99 nir_variable
*var
; /* variable created by ir_variable visitor */
101 /* whether the IR we're operating on is per-function or global */
104 /* map of ir_variable -> nir_variable */
105 struct hash_table
*var_table
;
107 /* map of ir_function_signature -> nir_function_overload */
108 struct hash_table
*overload_table
;
112 * This visitor runs before the main visitor, calling create_function() for
113 * each function so that the main visitor can resolve forward references in
117 class nir_function_visitor
: public ir_hierarchical_visitor
120 nir_function_visitor(nir_visitor
*v
) : visitor(v
)
123 virtual ir_visitor_status
visit_enter(ir_function
*);
126 nir_visitor
*visitor
;
129 }; /* end of anonymous namespace */
132 glsl_to_nir(const struct gl_shader_program
*shader_prog
,
133 gl_shader_stage stage
,
134 const nir_shader_compiler_options
*options
)
136 struct gl_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
138 nir_shader
*shader
= nir_shader_create(NULL
, stage
, options
);
140 nir_visitor
v1(shader
);
141 nir_function_visitor
v2(&v1
);
143 visit_exec_list(sh
->ir
, &v1
);
145 nir_lower_outputs_to_temporaries(shader
);
147 /* TODO: Use _mesa_fls instead */
148 unsigned num_textures
= 0;
149 for (unsigned i
= 0; i
< 8 * sizeof(sh
->Program
->SamplersUsed
); i
++)
150 if (sh
->Program
->SamplersUsed
& (1 << i
))
153 shader
->info
.name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
154 if (shader_prog
->Label
)
155 shader
->info
.label
= ralloc_strdup(shader
, shader_prog
->Label
);
156 shader
->info
.num_textures
= num_textures
;
157 shader
->info
.num_ubos
= sh
->NumUniformBlocks
;
158 shader
->info
.num_abos
= shader_prog
->NumAtomicBuffers
;
159 shader
->info
.num_ssbos
= sh
->NumShaderStorageBlocks
;
160 shader
->info
.num_images
= sh
->NumImages
;
161 shader
->info
.inputs_read
= sh
->Program
->InputsRead
;
162 shader
->info
.outputs_written
= sh
->Program
->OutputsWritten
;
163 shader
->info
.system_values_read
= sh
->Program
->SystemValuesRead
;
164 shader
->info
.uses_texture_gather
= sh
->Program
->UsesGather
;
165 shader
->info
.uses_clip_distance_out
= sh
->Program
->UsesClipDistanceOut
;
166 shader
->info
.separate_shader
= shader_prog
->SeparateShader
;
167 shader
->info
.has_transform_feedback_varyings
=
168 shader_prog
->TransformFeedback
.NumVarying
> 0;
171 case MESA_SHADER_GEOMETRY
:
172 shader
->info
.gs
.vertices_out
= sh
->Geom
.VerticesOut
;
173 shader
->info
.gs
.invocations
= sh
->Geom
.Invocations
;
176 case MESA_SHADER_FRAGMENT
: {
177 struct gl_fragment_program
*fp
=
178 (struct gl_fragment_program
*)sh
->Program
;
180 shader
->info
.fs
.uses_discard
= fp
->UsesKill
;
181 shader
->info
.fs
.early_fragment_tests
= sh
->EarlyFragmentTests
;
182 shader
->info
.fs
.depth_layout
= fp
->FragDepthLayout
;
186 case MESA_SHADER_COMPUTE
: {
187 struct gl_compute_program
*cp
= (struct gl_compute_program
*)sh
->Program
;
188 shader
->info
.cs
.local_size
[0] = cp
->LocalSize
[0];
189 shader
->info
.cs
.local_size
[1] = cp
->LocalSize
[1];
190 shader
->info
.cs
.local_size
[2] = cp
->LocalSize
[2];
195 break; /* No stage-specific info */
201 nir_visitor::nir_visitor(nir_shader
*shader
)
203 this->supports_ints
= shader
->options
->native_integers
;
204 this->shader
= shader
;
205 this->is_global
= true;
206 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
207 _mesa_key_pointer_equal
);
208 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
209 _mesa_key_pointer_equal
);
212 nir_visitor::~nir_visitor()
214 _mesa_hash_table_destroy(this->var_table
, NULL
);
215 _mesa_hash_table_destroy(this->overload_table
, NULL
);
219 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
222 ralloc_steal(mem_ctx
, this->deref_head
);
223 return this->deref_head
;
226 static nir_constant
*
227 constant_copy(ir_constant
*ir
, void *mem_ctx
)
232 nir_constant
*ret
= ralloc(mem_ctx
, nir_constant
);
234 unsigned total_elems
= ir
->type
->components();
236 switch (ir
->type
->base_type
) {
238 for (i
= 0; i
< total_elems
; i
++)
239 ret
->value
.u
[i
] = ir
->value
.u
[i
];
243 for (i
= 0; i
< total_elems
; i
++)
244 ret
->value
.i
[i
] = ir
->value
.i
[i
];
247 case GLSL_TYPE_FLOAT
:
248 for (i
= 0; i
< total_elems
; i
++)
249 ret
->value
.f
[i
] = ir
->value
.f
[i
];
253 for (i
= 0; i
< total_elems
; i
++)
254 ret
->value
.b
[i
] = ir
->value
.b
[i
];
257 case GLSL_TYPE_STRUCT
:
258 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
261 foreach_in_list(ir_constant
, field
, &ir
->components
) {
262 ret
->elements
[i
] = constant_copy(field
, mem_ctx
);
267 case GLSL_TYPE_ARRAY
:
268 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
271 for (i
= 0; i
< ir
->type
->length
; i
++)
272 ret
->elements
[i
] = constant_copy(ir
->array_elements
[i
], mem_ctx
);
276 unreachable("not reached");
283 nir_visitor::visit(ir_variable
*ir
)
285 nir_variable
*var
= ralloc(shader
, nir_variable
);
286 var
->type
= ir
->type
;
287 var
->name
= ralloc_strdup(var
, ir
->name
);
289 if (ir
->is_interface_instance() && ir
->get_max_ifc_array_access() != NULL
) {
290 unsigned size
= ir
->get_interface_type()->length
;
291 var
->max_ifc_array_access
= ralloc_array(var
, unsigned, size
);
292 memcpy(var
->max_ifc_array_access
, ir
->get_max_ifc_array_access(),
293 size
* sizeof(unsigned));
295 var
->max_ifc_array_access
= NULL
;
298 var
->data
.read_only
= ir
->data
.read_only
;
299 var
->data
.centroid
= ir
->data
.centroid
;
300 var
->data
.sample
= ir
->data
.sample
;
301 var
->data
.invariant
= ir
->data
.invariant
;
302 var
->data
.location
= ir
->data
.location
;
304 switch(ir
->data
.mode
) {
306 case ir_var_temporary
:
308 var
->data
.mode
= nir_var_global
;
310 var
->data
.mode
= nir_var_local
;
313 case ir_var_function_in
:
314 case ir_var_function_out
:
315 case ir_var_function_inout
:
316 case ir_var_const_in
:
317 var
->data
.mode
= nir_var_local
;
320 case ir_var_shader_in
:
321 if (shader
->stage
== MESA_SHADER_FRAGMENT
&&
322 ir
->data
.location
== VARYING_SLOT_FACE
) {
323 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
324 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
325 var
->data
.mode
= nir_var_system_value
;
326 } else if (shader
->stage
== MESA_SHADER_GEOMETRY
&&
327 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
328 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
329 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
330 var
->data
.mode
= nir_var_system_value
;
332 var
->data
.mode
= nir_var_shader_in
;
336 case ir_var_shader_out
:
337 var
->data
.mode
= nir_var_shader_out
;
341 var
->data
.mode
= nir_var_uniform
;
344 case ir_var_shader_storage
:
345 var
->data
.mode
= nir_var_shader_storage
;
348 case ir_var_system_value
:
349 var
->data
.mode
= nir_var_system_value
;
353 unreachable("not reached");
356 var
->data
.interpolation
= ir
->data
.interpolation
;
357 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
358 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
359 var
->data
.explicit_location
= ir
->data
.explicit_location
;
360 var
->data
.explicit_index
= ir
->data
.explicit_index
;
361 var
->data
.explicit_binding
= ir
->data
.explicit_binding
;
362 var
->data
.has_initializer
= ir
->data
.has_initializer
;
363 var
->data
.is_unmatched_generic_inout
= ir
->data
.is_unmatched_generic_inout
;
364 var
->data
.location_frac
= ir
->data
.location_frac
;
365 var
->data
.from_named_ifc_block_array
= ir
->data
.from_named_ifc_block_array
;
366 var
->data
.from_named_ifc_block_nonarray
= ir
->data
.from_named_ifc_block_nonarray
;
368 switch (ir
->data
.depth_layout
) {
369 case ir_depth_layout_none
:
370 var
->data
.depth_layout
= nir_depth_layout_none
;
372 case ir_depth_layout_any
:
373 var
->data
.depth_layout
= nir_depth_layout_any
;
375 case ir_depth_layout_greater
:
376 var
->data
.depth_layout
= nir_depth_layout_greater
;
378 case ir_depth_layout_less
:
379 var
->data
.depth_layout
= nir_depth_layout_less
;
381 case ir_depth_layout_unchanged
:
382 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
385 unreachable("not reached");
388 var
->data
.index
= ir
->data
.index
;
389 var
->data
.binding
= ir
->data
.binding
;
390 /* XXX Get rid of buffer_index */
391 var
->data
.atomic
.buffer_index
= ir
->data
.binding
;
392 var
->data
.atomic
.offset
= ir
->data
.atomic
.offset
;
393 var
->data
.image
.read_only
= ir
->data
.image_read_only
;
394 var
->data
.image
.write_only
= ir
->data
.image_write_only
;
395 var
->data
.image
.coherent
= ir
->data
.image_coherent
;
396 var
->data
.image
._volatile
= ir
->data
.image_volatile
;
397 var
->data
.image
.restrict_flag
= ir
->data
.image_restrict
;
398 var
->data
.image
.format
= ir
->data
.image_format
;
399 var
->data
.max_array_access
= ir
->data
.max_array_access
;
401 var
->num_state_slots
= ir
->get_num_state_slots();
402 if (var
->num_state_slots
> 0) {
403 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
404 var
->num_state_slots
);
406 ir_state_slot
*state_slots
= ir
->get_state_slots();
407 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
408 for (unsigned j
= 0; j
< 5; j
++)
409 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
410 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
413 var
->state_slots
= NULL
;
416 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
418 var
->interface_type
= ir
->get_interface_type();
420 if (var
->data
.mode
== nir_var_local
)
421 nir_function_impl_add_variable(impl
, var
);
423 nir_shader_add_variable(shader
, var
);
425 _mesa_hash_table_insert(var_table
, ir
, var
);
430 nir_function_visitor::visit_enter(ir_function
*ir
)
432 visitor
->create_function(ir
);
433 return visit_continue_with_parent
;
438 nir_visitor::create_function(ir_function
*ir
)
440 nir_function
*func
= nir_function_create(this->shader
, ir
->name
);
441 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
442 create_overload(sig
, func
);
449 nir_visitor::create_overload(ir_function_signature
*ir
, nir_function
*function
)
451 if (ir
->is_intrinsic
)
454 nir_function_overload
*overload
= nir_function_overload_create(function
);
456 unsigned num_params
= ir
->parameters
.length();
457 overload
->num_params
= num_params
;
458 overload
->params
= ralloc_array(shader
, nir_parameter
, num_params
);
461 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
462 switch (param
->data
.mode
) {
463 case ir_var_function_in
:
464 overload
->params
[i
].param_type
= nir_parameter_in
;
467 case ir_var_function_out
:
468 overload
->params
[i
].param_type
= nir_parameter_out
;
471 case ir_var_function_inout
:
472 overload
->params
[i
].param_type
= nir_parameter_inout
;
476 unreachable("not reached");
479 overload
->params
[i
].type
= param
->type
;
483 overload
->return_type
= ir
->return_type
;
485 _mesa_hash_table_insert(this->overload_table
, ir
, overload
);
489 nir_visitor::visit(ir_function
*ir
)
491 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
496 nir_visitor::visit(ir_function_signature
*ir
)
498 if (ir
->is_intrinsic
)
501 struct hash_entry
*entry
=
502 _mesa_hash_table_search(this->overload_table
, ir
);
505 nir_function_overload
*overload
= (nir_function_overload
*) entry
->data
;
507 if (ir
->is_defined
) {
508 nir_function_impl
*impl
= nir_function_impl_create(overload
);
511 unsigned num_params
= overload
->num_params
;
512 impl
->num_params
= num_params
;
513 impl
->params
= ralloc_array(this->shader
, nir_variable
*, num_params
);
515 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
517 impl
->params
[i
] = this->var
;
521 if (overload
->return_type
== glsl_type::void_type
) {
522 impl
->return_var
= NULL
;
524 impl
->return_var
= ralloc(this->shader
, nir_variable
);
525 impl
->return_var
->name
= ralloc_strdup(impl
->return_var
,
527 impl
->return_var
->type
= overload
->return_type
;
530 this->is_global
= false;
532 this->cf_node_list
= &impl
->body
;
533 visit_exec_list(&ir
->body
, this);
535 this->is_global
= true;
537 overload
->impl
= NULL
;
542 nir_visitor::visit(ir_loop
*ir
)
544 exec_list
*old_list
= this->cf_node_list
;
546 nir_loop
*loop
= nir_loop_create(this->shader
);
547 nir_cf_node_insert_end(old_list
, &loop
->cf_node
);
548 this->cf_node_list
= &loop
->body
;
549 visit_exec_list(&ir
->body_instructions
, this);
551 this->cf_node_list
= old_list
;
555 nir_visitor::visit(ir_if
*ir
)
557 nir_src condition
= evaluate_rvalue(ir
->condition
);
559 exec_list
*old_list
= this->cf_node_list
;
561 nir_if
*if_stmt
= nir_if_create(this->shader
);
562 if_stmt
->condition
= condition
;
563 nir_cf_node_insert_end(old_list
, &if_stmt
->cf_node
);
565 this->cf_node_list
= &if_stmt
->then_list
;
566 visit_exec_list(&ir
->then_instructions
, this);
568 this->cf_node_list
= &if_stmt
->else_list
;
569 visit_exec_list(&ir
->else_instructions
, this);
571 this->cf_node_list
= old_list
;
575 nir_visitor::visit(ir_discard
*ir
)
578 * discards aren't treated as control flow, because before we lower them
579 * they can appear anywhere in the shader and the stuff after them may still
580 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
581 * discards will be immediately followed by a return.
584 nir_intrinsic_instr
*discard
;
586 discard
= nir_intrinsic_instr_create(this->shader
,
587 nir_intrinsic_discard_if
);
588 discard
->src
[0] = evaluate_rvalue(ir
->condition
);
590 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
592 nir_instr_insert_after_cf_list(this->cf_node_list
, &discard
->instr
);
596 nir_visitor::visit(ir_emit_vertex
*ir
)
598 nir_intrinsic_instr
*instr
=
599 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
600 instr
->const_index
[0] = ir
->stream_id();
601 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
605 nir_visitor::visit(ir_end_primitive
*ir
)
607 nir_intrinsic_instr
*instr
=
608 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
609 instr
->const_index
[0] = ir
->stream_id();
610 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
614 nir_visitor::visit(ir_loop_jump
*ir
)
618 case ir_loop_jump::jump_break
:
619 type
= nir_jump_break
;
621 case ir_loop_jump::jump_continue
:
622 type
= nir_jump_continue
;
625 unreachable("not reached");
628 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
629 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
633 nir_visitor::visit(ir_return
*ir
)
635 if (ir
->value
!= NULL
) {
636 nir_intrinsic_instr
*copy
=
637 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
639 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
640 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
643 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
644 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
648 nir_visitor::visit(ir_call
*ir
)
650 if (ir
->callee
->is_intrinsic
) {
652 if (strcmp(ir
->callee_name(), "__intrinsic_atomic_read") == 0) {
653 op
= nir_intrinsic_atomic_counter_read_var
;
654 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_increment") == 0) {
655 op
= nir_intrinsic_atomic_counter_inc_var
;
656 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_predecrement") == 0) {
657 op
= nir_intrinsic_atomic_counter_dec_var
;
658 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_load") == 0) {
659 op
= nir_intrinsic_image_load
;
660 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_store") == 0) {
661 op
= nir_intrinsic_image_store
;
662 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_add") == 0) {
663 op
= nir_intrinsic_image_atomic_add
;
664 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_min") == 0) {
665 op
= nir_intrinsic_image_atomic_min
;
666 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_max") == 0) {
667 op
= nir_intrinsic_image_atomic_max
;
668 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_and") == 0) {
669 op
= nir_intrinsic_image_atomic_and
;
670 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_or") == 0) {
671 op
= nir_intrinsic_image_atomic_or
;
672 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_xor") == 0) {
673 op
= nir_intrinsic_image_atomic_xor
;
674 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_exchange") == 0) {
675 op
= nir_intrinsic_image_atomic_exchange
;
676 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_comp_swap") == 0) {
677 op
= nir_intrinsic_image_atomic_comp_swap
;
678 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier") == 0) {
679 op
= nir_intrinsic_memory_barrier
;
680 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_size") == 0) {
681 op
= nir_intrinsic_image_size
;
682 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_samples") == 0) {
683 op
= nir_intrinsic_image_samples
;
684 } else if (strcmp(ir
->callee_name(), "__intrinsic_store_ssbo") == 0) {
685 op
= nir_intrinsic_store_ssbo
;
686 } else if (strcmp(ir
->callee_name(), "__intrinsic_load_ssbo") == 0) {
687 op
= nir_intrinsic_load_ssbo
;
688 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_add_internal") == 0) {
689 op
= nir_intrinsic_ssbo_atomic_add
;
690 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_and_internal") == 0) {
691 op
= nir_intrinsic_ssbo_atomic_and
;
692 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_or_internal") == 0) {
693 op
= nir_intrinsic_ssbo_atomic_or
;
694 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_xor_internal") == 0) {
695 op
= nir_intrinsic_ssbo_atomic_xor
;
696 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_min_internal") == 0) {
697 assert(ir
->return_deref
);
698 if (ir
->return_deref
->type
== glsl_type::int_type
)
699 op
= nir_intrinsic_ssbo_atomic_imin
;
700 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
701 op
= nir_intrinsic_ssbo_atomic_umin
;
703 unreachable("Invalid type");
704 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_max_internal") == 0) {
705 assert(ir
->return_deref
);
706 if (ir
->return_deref
->type
== glsl_type::int_type
)
707 op
= nir_intrinsic_ssbo_atomic_imax
;
708 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
709 op
= nir_intrinsic_ssbo_atomic_umax
;
711 unreachable("Invalid type");
712 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_exchange_internal") == 0) {
713 op
= nir_intrinsic_ssbo_atomic_exchange
;
714 } else if (strcmp(ir
->callee_name(), "__intrinsic_ssbo_atomic_comp_swap_internal") == 0) {
715 op
= nir_intrinsic_ssbo_atomic_comp_swap
;
717 unreachable("not reached");
720 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
721 nir_dest
*dest
= &instr
->dest
;
724 case nir_intrinsic_atomic_counter_read_var
:
725 case nir_intrinsic_atomic_counter_inc_var
:
726 case nir_intrinsic_atomic_counter_dec_var
: {
727 ir_dereference
*param
=
728 (ir_dereference
*) ir
->actual_parameters
.get_head();
729 instr
->variables
[0] = evaluate_deref(&instr
->instr
, param
);
730 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, NULL
);
731 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
734 case nir_intrinsic_image_load
:
735 case nir_intrinsic_image_store
:
736 case nir_intrinsic_image_atomic_add
:
737 case nir_intrinsic_image_atomic_min
:
738 case nir_intrinsic_image_atomic_max
:
739 case nir_intrinsic_image_atomic_and
:
740 case nir_intrinsic_image_atomic_or
:
741 case nir_intrinsic_image_atomic_xor
:
742 case nir_intrinsic_image_atomic_exchange
:
743 case nir_intrinsic_image_atomic_comp_swap
:
744 case nir_intrinsic_image_samples
:
745 case nir_intrinsic_image_size
: {
746 nir_ssa_undef_instr
*instr_undef
=
747 nir_ssa_undef_instr_create(shader
, 1);
748 nir_instr_insert_after_cf_list(this->cf_node_list
,
749 &instr_undef
->instr
);
751 /* Set the image variable dereference. */
752 exec_node
*param
= ir
->actual_parameters
.get_head();
753 ir_dereference
*image
= (ir_dereference
*)param
;
754 const glsl_type
*type
=
755 image
->variable_referenced()->type
->without_array();
757 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
758 param
= param
->get_next();
760 /* Set the intrinsic destination. */
761 if (ir
->return_deref
) {
762 const nir_intrinsic_info
*info
=
763 &nir_intrinsic_infos
[instr
->intrinsic
];
764 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
765 info
->dest_components
, NULL
);
768 if (op
== nir_intrinsic_image_size
||
769 op
== nir_intrinsic_image_samples
) {
770 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
774 /* Set the address argument, extending the coordinate vector to four
777 const nir_src src_addr
= evaluate_rvalue((ir_dereference
*)param
);
778 nir_alu_instr
*instr_addr
= nir_alu_instr_create(shader
, nir_op_vec4
);
779 nir_ssa_dest_init(&instr_addr
->instr
, &instr_addr
->dest
.dest
, 4, NULL
);
781 for (int i
= 0; i
< 4; i
++) {
782 if (i
< type
->coordinate_components()) {
783 instr_addr
->src
[i
].src
= src_addr
;
784 instr_addr
->src
[i
].swizzle
[0] = i
;
786 instr_addr
->src
[i
].src
= nir_src_for_ssa(&instr_undef
->def
);
790 nir_instr_insert_after_cf_list(cf_node_list
, &instr_addr
->instr
);
791 instr
->src
[0] = nir_src_for_ssa(&instr_addr
->dest
.dest
.ssa
);
792 param
= param
->get_next();
794 /* Set the sample argument, which is undefined for single-sample
797 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
798 instr
->src
[1] = evaluate_rvalue((ir_dereference
*)param
);
799 param
= param
->get_next();
801 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
804 /* Set the intrinsic parameters. */
805 if (!param
->is_tail_sentinel()) {
806 instr
->src
[2] = evaluate_rvalue((ir_dereference
*)param
);
807 param
= param
->get_next();
810 if (!param
->is_tail_sentinel()) {
811 instr
->src
[3] = evaluate_rvalue((ir_dereference
*)param
);
812 param
= param
->get_next();
814 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
817 case nir_intrinsic_memory_barrier
:
818 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
820 case nir_intrinsic_store_ssbo
: {
821 exec_node
*param
= ir
->actual_parameters
.get_head();
822 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
824 param
= param
->get_next();
825 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
827 param
= param
->get_next();
828 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
830 param
= param
->get_next();
831 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
834 /* Check if we need the indirect version */
835 ir_constant
*const_offset
= offset
->as_constant();
837 op
= nir_intrinsic_store_ssbo_indirect
;
839 instr
= nir_intrinsic_instr_create(shader
, op
);
840 instr
->src
[2] = evaluate_rvalue(offset
);
841 instr
->const_index
[0] = 0;
843 instr
->const_index
[0] = const_offset
->value
.u
[0];
846 instr
->const_index
[1] = write_mask
->value
.u
[0];
848 instr
->src
[0] = evaluate_rvalue(val
);
849 instr
->num_components
= val
->type
->vector_elements
;
851 instr
->src
[1] = evaluate_rvalue(block
);
852 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
855 case nir_intrinsic_load_ssbo
: {
856 exec_node
*param
= ir
->actual_parameters
.get_head();
857 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
859 param
= param
->get_next();
860 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
862 /* Check if we need the indirect version */
863 ir_constant
*const_offset
= offset
->as_constant();
865 op
= nir_intrinsic_load_ssbo_indirect
;
867 instr
= nir_intrinsic_instr_create(shader
, op
);
868 instr
->src
[1] = evaluate_rvalue(offset
);
869 instr
->const_index
[0] = 0;
872 instr
->const_index
[0] = const_offset
->value
.u
[0];
875 instr
->src
[0] = evaluate_rvalue(block
);
877 const glsl_type
*type
= ir
->return_deref
->var
->type
;
878 instr
->num_components
= type
->vector_elements
;
880 /* Setup destination register */
881 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
882 type
->vector_elements
, NULL
);
884 /* Insert the created nir instruction now since in the case of boolean
885 * result we will need to emit another instruction after it
887 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
890 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
891 * consider a true boolean to be ~0. Fix this up with a != 0
894 if (type
->base_type
== GLSL_TYPE_BOOL
) {
895 nir_load_const_instr
*const_zero
=
896 nir_load_const_instr_create(shader
, 1);
897 const_zero
->value
.u
[0] = 0;
898 nir_instr_insert_after_cf_list(this->cf_node_list
,
901 nir_alu_instr
*load_ssbo_compare
=
902 nir_alu_instr_create(shader
, nir_op_ine
);
903 load_ssbo_compare
->src
[0].src
.is_ssa
= true;
904 load_ssbo_compare
->src
[0].src
.ssa
= &instr
->dest
.ssa
;
905 load_ssbo_compare
->src
[1].src
.is_ssa
= true;
906 load_ssbo_compare
->src
[1].src
.ssa
= &const_zero
->def
;
907 for (unsigned i
= 0; i
< type
->vector_elements
; i
++)
908 load_ssbo_compare
->src
[1].swizzle
[i
] = 0;
909 nir_ssa_dest_init(&load_ssbo_compare
->instr
,
910 &load_ssbo_compare
->dest
.dest
,
911 type
->vector_elements
, NULL
);
912 load_ssbo_compare
->dest
.write_mask
= (1 << type
->vector_elements
) - 1;
913 nir_instr_insert_after_cf_list(this->cf_node_list
,
914 &load_ssbo_compare
->instr
);
915 dest
= &load_ssbo_compare
->dest
.dest
;
919 case nir_intrinsic_ssbo_atomic_add
:
920 case nir_intrinsic_ssbo_atomic_imin
:
921 case nir_intrinsic_ssbo_atomic_umin
:
922 case nir_intrinsic_ssbo_atomic_imax
:
923 case nir_intrinsic_ssbo_atomic_umax
:
924 case nir_intrinsic_ssbo_atomic_and
:
925 case nir_intrinsic_ssbo_atomic_or
:
926 case nir_intrinsic_ssbo_atomic_xor
:
927 case nir_intrinsic_ssbo_atomic_exchange
:
928 case nir_intrinsic_ssbo_atomic_comp_swap
: {
929 int param_count
= ir
->actual_parameters
.length();
930 assert(param_count
== 3 || param_count
== 4);
933 exec_node
*param
= ir
->actual_parameters
.get_head();
934 ir_instruction
*inst
= (ir_instruction
*) param
;
935 instr
->src
[0] = evaluate_rvalue(inst
->as_rvalue());
938 param
= param
->get_next();
939 inst
= (ir_instruction
*) param
;
940 instr
->src
[1] = evaluate_rvalue(inst
->as_rvalue());
942 /* data1 parameter (this is always present) */
943 param
= param
->get_next();
944 inst
= (ir_instruction
*) param
;
945 instr
->src
[2] = evaluate_rvalue(inst
->as_rvalue());
947 /* data2 parameter (only with atomic_comp_swap) */
948 if (param_count
== 4) {
949 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
);
950 param
= param
->get_next();
951 inst
= (ir_instruction
*) param
;
952 instr
->src
[3] = evaluate_rvalue(inst
->as_rvalue());
956 assert(ir
->return_deref
);
957 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
958 ir
->return_deref
->type
->vector_elements
, NULL
);
959 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
963 unreachable("not reached");
966 if (ir
->return_deref
) {
967 nir_intrinsic_instr
*store_instr
=
968 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
969 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
971 store_instr
->variables
[0] =
972 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
973 store_instr
->src
[0] = nir_src_for_ssa(&dest
->ssa
);
975 nir_instr_insert_after_cf_list(this->cf_node_list
,
976 &store_instr
->instr
);
982 struct hash_entry
*entry
=
983 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
985 nir_function_overload
*callee
= (nir_function_overload
*) entry
->data
;
987 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
990 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
991 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
995 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
996 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
1000 nir_visitor::visit(ir_assignment
*ir
)
1002 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1004 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1005 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1006 /* We're doing a plain-as-can-be copy, so emit a copy_var */
1007 nir_intrinsic_instr
*copy
=
1008 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
1010 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
1011 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
1013 if (ir
->condition
) {
1014 nir_if
*if_stmt
= nir_if_create(this->shader
);
1015 if_stmt
->condition
= evaluate_rvalue(ir
->condition
);
1016 nir_cf_node_insert_end(this->cf_node_list
, &if_stmt
->cf_node
);
1017 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, ©
->instr
);
1019 nir_instr_insert_after_cf_list(this->cf_node_list
, ©
->instr
);
1024 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1026 ir
->lhs
->accept(this);
1027 nir_deref_var
*lhs_deref
= this->deref_head
;
1028 nir_src src
= evaluate_rvalue(ir
->rhs
);
1030 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1032 * We have no good way to update only part of a variable, so just load
1033 * the LHS and do a vec operation to combine the old with the new, and
1035 * back into the LHS. Copy propagation should get rid of the mess.
1038 nir_intrinsic_instr
*load
=
1039 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1040 load
->num_components
= ir
->lhs
->type
->vector_elements
;
1041 nir_ssa_dest_init(&load
->instr
, &load
->dest
, num_components
, NULL
);
1042 load
->variables
[0] = lhs_deref
;
1043 ralloc_steal(load
, load
->variables
[0]);
1044 nir_instr_insert_after_cf_list(this->cf_node_list
, &load
->instr
);
1047 switch (ir
->lhs
->type
->vector_elements
) {
1048 case 1: vec_op
= nir_op_imov
; break;
1049 case 2: vec_op
= nir_op_vec2
; break;
1050 case 3: vec_op
= nir_op_vec3
; break;
1051 case 4: vec_op
= nir_op_vec4
; break;
1052 default: unreachable("Invalid number of components"); break;
1054 nir_alu_instr
*vec
= nir_alu_instr_create(this->shader
, vec_op
);
1055 nir_ssa_dest_init(&vec
->instr
, &vec
->dest
.dest
, num_components
, NULL
);
1056 vec
->dest
.write_mask
= (1 << num_components
) - 1;
1058 unsigned component
= 0;
1059 for (unsigned i
= 0; i
< ir
->lhs
->type
->vector_elements
; i
++) {
1060 if (ir
->write_mask
& (1 << i
)) {
1061 vec
->src
[i
].src
= src
;
1063 /* GLSL IR will give us the input to the write-masked assignment
1064 * in a single packed vector. So, for example, if the
1065 * writemask is xzw, then we have to swizzle x -> x, y -> z,
1066 * and z -> w and get the y component from the load.
1068 vec
->src
[i
].swizzle
[0] = component
++;
1070 vec
->src
[i
].src
.is_ssa
= true;
1071 vec
->src
[i
].src
.ssa
= &load
->dest
.ssa
;
1072 vec
->src
[i
].swizzle
[0] = i
;
1076 nir_instr_insert_after_cf_list(this->cf_node_list
, &vec
->instr
);
1079 src
.ssa
= &vec
->dest
.dest
.ssa
;
1082 nir_intrinsic_instr
*store
=
1083 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
1084 store
->num_components
= ir
->lhs
->type
->vector_elements
;
1085 nir_deref
*store_deref
= nir_copy_deref(store
, &lhs_deref
->deref
);
1086 store
->variables
[0] = nir_deref_as_var(store_deref
);
1087 store
->src
[0] = src
;
1089 if (ir
->condition
) {
1090 nir_if
*if_stmt
= nir_if_create(this->shader
);
1091 if_stmt
->condition
= evaluate_rvalue(ir
->condition
);
1092 nir_cf_node_insert_end(this->cf_node_list
, &if_stmt
->cf_node
);
1093 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, &store
->instr
);
1095 nir_instr_insert_after_cf_list(this->cf_node_list
, &store
->instr
);
1100 * Given an instruction, returns a pointer to its destination or NULL if there
1101 * is no destination.
1103 * Note that this only handles instructions we generate at this level.
1106 get_instr_dest(nir_instr
*instr
)
1108 nir_alu_instr
*alu_instr
;
1109 nir_intrinsic_instr
*intrinsic_instr
;
1110 nir_tex_instr
*tex_instr
;
1112 switch (instr
->type
) {
1113 case nir_instr_type_alu
:
1114 alu_instr
= nir_instr_as_alu(instr
);
1115 return &alu_instr
->dest
.dest
;
1117 case nir_instr_type_intrinsic
:
1118 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1119 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1120 return &intrinsic_instr
->dest
;
1124 case nir_instr_type_tex
:
1125 tex_instr
= nir_instr_as_tex(instr
);
1126 return &tex_instr
->dest
;
1129 unreachable("not reached");
1136 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
)
1138 nir_dest
*dest
= get_instr_dest(instr
);
1141 nir_ssa_dest_init(instr
, dest
, num_components
, NULL
);
1143 nir_instr_insert_after_cf_list(this->cf_node_list
, instr
);
1144 this->result
= instr
;
1148 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1151 if (ir
->as_dereference() || ir
->as_constant()) {
1153 * A dereference is being used on the right hand side, which means we
1154 * must emit a variable load.
1157 nir_intrinsic_instr
*load_instr
=
1158 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
1159 load_instr
->num_components
= ir
->type
->vector_elements
;
1160 load_instr
->variables
[0] = this->deref_head
;
1161 ralloc_steal(load_instr
, load_instr
->variables
[0]);
1162 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
);
1165 nir_dest
*dest
= get_instr_dest(this->result
);
1166 assert(dest
->is_ssa
);
1168 return nir_src_for_ssa(&dest
->ssa
);
1172 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src
*srcs
)
1174 nir_alu_instr
*instr
= nir_alu_instr_create(this->shader
, op
);
1175 for (unsigned i
= 0; i
< nir_op_infos
[op
].num_inputs
; i
++)
1176 instr
->src
[i
].src
= srcs
[i
];
1177 instr
->dest
.write_mask
= (1 << dest_size
) - 1;
1178 add_instr(&instr
->instr
, dest_size
);
1183 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src src1
)
1185 assert(nir_op_infos
[op
].num_inputs
== 1);
1186 return emit(op
, dest_size
, &src1
);
1190 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src src1
,
1193 assert(nir_op_infos
[op
].num_inputs
== 2);
1194 nir_src srcs
[] = { src1
, src2
};
1195 return emit(op
, dest_size
, srcs
);
1199 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src src1
,
1200 nir_src src2
, nir_src src3
)
1202 assert(nir_op_infos
[op
].num_inputs
== 3);
1203 nir_src srcs
[] = { src1
, src2
, src3
};
1204 return emit(op
, dest_size
, srcs
);
1208 nir_visitor::visit(ir_expression
*ir
)
1210 /* Some special cases */
1211 switch (ir
->operation
) {
1212 case ir_binop_ubo_load
: {
1213 ir_constant
*const_index
= ir
->operands
[1]->as_constant();
1215 nir_intrinsic_op op
;
1217 op
= nir_intrinsic_load_ubo
;
1219 op
= nir_intrinsic_load_ubo_indirect
;
1221 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(this->shader
, op
);
1222 load
->num_components
= ir
->type
->vector_elements
;
1223 load
->const_index
[0] = const_index
? const_index
->value
.u
[0] : 0; /* base offset */
1224 load
->src
[0] = evaluate_rvalue(ir
->operands
[0]);
1226 load
->src
[1] = evaluate_rvalue(ir
->operands
[1]);
1227 add_instr(&load
->instr
, ir
->type
->vector_elements
);
1230 * In UBO's, a true boolean value is any non-zero value, but we consider
1231 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1234 if (ir
->type
->base_type
== GLSL_TYPE_BOOL
) {
1235 nir_load_const_instr
*const_zero
= nir_load_const_instr_create(shader
, 1);
1236 const_zero
->value
.u
[0] = 0;
1237 nir_instr_insert_after_cf_list(this->cf_node_list
, &const_zero
->instr
);
1239 nir_alu_instr
*compare
= nir_alu_instr_create(shader
, nir_op_ine
);
1240 compare
->src
[0].src
.is_ssa
= true;
1241 compare
->src
[0].src
.ssa
= &load
->dest
.ssa
;
1242 compare
->src
[1].src
.is_ssa
= true;
1243 compare
->src
[1].src
.ssa
= &const_zero
->def
;
1244 for (unsigned i
= 0; i
< ir
->type
->vector_elements
; i
++)
1245 compare
->src
[1].swizzle
[i
] = 0;
1246 compare
->dest
.write_mask
= (1 << ir
->type
->vector_elements
) - 1;
1248 add_instr(&compare
->instr
, ir
->type
->vector_elements
);
1254 case ir_unop_interpolate_at_centroid
:
1255 case ir_binop_interpolate_at_offset
:
1256 case ir_binop_interpolate_at_sample
: {
1257 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1258 ir_swizzle
*swizzle
= NULL
;
1260 /* the api does not allow a swizzle here, but the varying packing code
1261 * may have pushed one into here.
1263 swizzle
= ir
->operands
[0]->as_swizzle();
1265 deref
= swizzle
->val
->as_dereference();
1269 deref
->accept(this);
1271 nir_intrinsic_op op
;
1272 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1273 switch (ir
->operation
) {
1274 case ir_unop_interpolate_at_centroid
:
1275 op
= nir_intrinsic_interp_var_at_centroid
;
1277 case ir_binop_interpolate_at_offset
:
1278 op
= nir_intrinsic_interp_var_at_offset
;
1280 case ir_binop_interpolate_at_sample
:
1281 op
= nir_intrinsic_interp_var_at_sample
;
1284 unreachable("Invalid interpolation intrinsic");
1287 /* This case can happen if the vertex shader does not write the
1288 * given varying. In this case, the linker will lower it to a
1289 * global variable. Since interpolating a variable makes no
1290 * sense, we'll just turn it into a load which will probably
1291 * eventually end up as an SSA definition.
1293 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1294 op
= nir_intrinsic_load_var
;
1297 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1298 intrin
->num_components
= deref
->type
->vector_elements
;
1299 intrin
->variables
[0] = this->deref_head
;
1300 ralloc_steal(intrin
, intrin
->variables
[0]);
1302 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1303 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1304 intrin
->src
[0] = evaluate_rvalue(ir
->operands
[1]);
1306 add_instr(&intrin
->instr
, deref
->type
->vector_elements
);
1309 nir_alu_instr
*mov
= nir_alu_instr_create(shader
, nir_op_imov
);
1310 mov
->dest
.write_mask
= (1 << swizzle
->type
->vector_elements
) - 1;
1311 mov
->src
[0].src
.is_ssa
= true;
1312 mov
->src
[0].src
.ssa
= &intrin
->dest
.ssa
;
1314 mov
->src
[0].swizzle
[0] = swizzle
->mask
.x
;
1315 mov
->src
[0].swizzle
[1] = swizzle
->mask
.y
;
1316 mov
->src
[0].swizzle
[2] = swizzle
->mask
.z
;
1317 mov
->src
[0].swizzle
[3] = swizzle
->mask
.w
;
1318 for (unsigned i
= deref
->type
->vector_elements
; i
< 4; i
++)
1319 mov
->src
[0].swizzle
[i
] = 0;
1321 add_instr(&mov
->instr
, swizzle
->type
->vector_elements
);
1332 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1333 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1335 glsl_base_type types
[4];
1336 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1338 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1340 types
[i
] = GLSL_TYPE_FLOAT
;
1342 glsl_base_type out_type
;
1344 out_type
= ir
->type
->base_type
;
1346 out_type
= GLSL_TYPE_FLOAT
;
1348 unsigned dest_size
= ir
->type
->vector_elements
;
1350 nir_alu_instr
*instr
;
1353 switch (ir
->operation
) {
1354 case ir_unop_bit_not
: emit(nir_op_inot
, dest_size
, srcs
); break;
1355 case ir_unop_logic_not
:
1356 emit(supports_ints
? nir_op_inot
: nir_op_fnot
, dest_size
, srcs
);
1359 instr
= emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fneg
: nir_op_ineg
,
1363 instr
= emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fabs
: nir_op_iabs
,
1366 case ir_unop_saturate
:
1367 assert(types
[0] == GLSL_TYPE_FLOAT
);
1368 instr
= emit(nir_op_fsat
, dest_size
, srcs
);
1371 emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fsign
: nir_op_isign
,
1374 case ir_unop_rcp
: emit(nir_op_frcp
, dest_size
, srcs
); break;
1375 case ir_unop_rsq
: emit(nir_op_frsq
, dest_size
, srcs
); break;
1376 case ir_unop_sqrt
: emit(nir_op_fsqrt
, dest_size
, srcs
); break;
1377 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1378 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1379 case ir_unop_exp2
: emit(nir_op_fexp2
, dest_size
, srcs
); break;
1380 case ir_unop_log2
: emit(nir_op_flog2
, dest_size
, srcs
); break;
1382 emit(supports_ints
? nir_op_i2f
: nir_op_fmov
, dest_size
, srcs
);
1385 emit(supports_ints
? nir_op_u2f
: nir_op_fmov
, dest_size
, srcs
);
1388 emit(supports_ints
? nir_op_b2f
: nir_op_fmov
, dest_size
, srcs
);
1390 case ir_unop_f2i
: emit(nir_op_f2i
, dest_size
, srcs
); break;
1391 case ir_unop_f2u
: emit(nir_op_f2u
, dest_size
, srcs
); break;
1392 case ir_unop_f2b
: emit(nir_op_f2b
, dest_size
, srcs
); break;
1393 case ir_unop_i2b
: emit(nir_op_i2b
, dest_size
, srcs
); break;
1394 case ir_unop_b2i
: emit(nir_op_b2i
, dest_size
, srcs
); break;
1397 case ir_unop_bitcast_i2f
:
1398 case ir_unop_bitcast_f2i
:
1399 case ir_unop_bitcast_u2f
:
1400 case ir_unop_bitcast_f2u
:
1401 case ir_unop_subroutine_to_int
:
1403 emit(nir_op_imov
, dest_size
, srcs
);
1406 switch (ir
->operands
[0]->type
->vector_elements
) {
1408 emit(supports_ints
? nir_op_bany2
: nir_op_fany2
,
1412 emit(supports_ints
? nir_op_bany3
: nir_op_fany3
,
1416 emit(supports_ints
? nir_op_bany4
: nir_op_fany4
,
1420 unreachable("not reached");
1423 case ir_unop_trunc
: emit(nir_op_ftrunc
, dest_size
, srcs
); break;
1424 case ir_unop_ceil
: emit(nir_op_fceil
, dest_size
, srcs
); break;
1425 case ir_unop_floor
: emit(nir_op_ffloor
, dest_size
, srcs
); break;
1426 case ir_unop_fract
: emit(nir_op_ffract
, dest_size
, srcs
); break;
1427 case ir_unop_round_even
: emit(nir_op_fround_even
, dest_size
, srcs
); break;
1428 case ir_unop_sin
: emit(nir_op_fsin
, dest_size
, srcs
); break;
1429 case ir_unop_cos
: emit(nir_op_fcos
, dest_size
, srcs
); break;
1430 case ir_unop_dFdx
: emit(nir_op_fddx
, dest_size
, srcs
); break;
1431 case ir_unop_dFdy
: emit(nir_op_fddy
, dest_size
, srcs
); break;
1432 case ir_unop_dFdx_fine
: emit(nir_op_fddx_fine
, dest_size
, srcs
); break;
1433 case ir_unop_dFdy_fine
: emit(nir_op_fddy_fine
, dest_size
, srcs
); break;
1434 case ir_unop_dFdx_coarse
: emit(nir_op_fddx_coarse
, dest_size
, srcs
); break;
1435 case ir_unop_dFdy_coarse
: emit(nir_op_fddy_coarse
, dest_size
, srcs
); break;
1436 case ir_unop_pack_snorm_2x16
:
1437 emit(nir_op_pack_snorm_2x16
, dest_size
, srcs
);
1439 case ir_unop_pack_snorm_4x8
:
1440 emit(nir_op_pack_snorm_4x8
, dest_size
, srcs
);
1442 case ir_unop_pack_unorm_2x16
:
1443 emit(nir_op_pack_unorm_2x16
, dest_size
, srcs
);
1445 case ir_unop_pack_unorm_4x8
:
1446 emit(nir_op_pack_unorm_4x8
, dest_size
, srcs
);
1448 case ir_unop_pack_half_2x16
:
1449 emit(nir_op_pack_half_2x16
, dest_size
, srcs
);
1451 case ir_unop_unpack_snorm_2x16
:
1452 emit(nir_op_unpack_snorm_2x16
, dest_size
, srcs
);
1454 case ir_unop_unpack_snorm_4x8
:
1455 emit(nir_op_unpack_snorm_4x8
, dest_size
, srcs
);
1457 case ir_unop_unpack_unorm_2x16
:
1458 emit(nir_op_unpack_unorm_2x16
, dest_size
, srcs
);
1460 case ir_unop_unpack_unorm_4x8
:
1461 emit(nir_op_unpack_unorm_4x8
, dest_size
, srcs
);
1463 case ir_unop_unpack_half_2x16
:
1464 emit(nir_op_unpack_half_2x16
, dest_size
, srcs
);
1466 case ir_unop_unpack_half_2x16_split_x
:
1467 emit(nir_op_unpack_half_2x16_split_x
, dest_size
, srcs
);
1469 case ir_unop_unpack_half_2x16_split_y
:
1470 emit(nir_op_unpack_half_2x16_split_y
, dest_size
, srcs
);
1472 case ir_unop_bitfield_reverse
:
1473 emit(nir_op_bitfield_reverse
, dest_size
, srcs
);
1475 case ir_unop_bit_count
:
1476 emit(nir_op_bit_count
, dest_size
, srcs
);
1478 case ir_unop_find_msb
:
1480 case GLSL_TYPE_UINT
:
1481 emit(nir_op_ufind_msb
, dest_size
, srcs
);
1484 emit(nir_op_ifind_msb
, dest_size
, srcs
);
1487 unreachable("Invalid type for findMSB()");
1490 case ir_unop_find_lsb
:
1491 emit(nir_op_find_lsb
, dest_size
, srcs
);
1495 switch (ir
->type
->vector_elements
) {
1497 switch (ir
->operands
[0]->type
->vector_elements
) {
1498 case 1: emit(nir_op_fnoise1_1
, dest_size
, srcs
); break;
1499 case 2: emit(nir_op_fnoise1_2
, dest_size
, srcs
); break;
1500 case 3: emit(nir_op_fnoise1_3
, dest_size
, srcs
); break;
1501 case 4: emit(nir_op_fnoise1_4
, dest_size
, srcs
); break;
1502 default: unreachable("not reached");
1506 switch (ir
->operands
[0]->type
->vector_elements
) {
1507 case 1: emit(nir_op_fnoise2_1
, dest_size
, srcs
); break;
1508 case 2: emit(nir_op_fnoise2_2
, dest_size
, srcs
); break;
1509 case 3: emit(nir_op_fnoise2_3
, dest_size
, srcs
); break;
1510 case 4: emit(nir_op_fnoise2_4
, dest_size
, srcs
); break;
1511 default: unreachable("not reached");
1515 switch (ir
->operands
[0]->type
->vector_elements
) {
1516 case 1: emit(nir_op_fnoise3_1
, dest_size
, srcs
); break;
1517 case 2: emit(nir_op_fnoise3_2
, dest_size
, srcs
); break;
1518 case 3: emit(nir_op_fnoise3_3
, dest_size
, srcs
); break;
1519 case 4: emit(nir_op_fnoise3_4
, dest_size
, srcs
); break;
1520 default: unreachable("not reached");
1524 switch (ir
->operands
[0]->type
->vector_elements
) {
1525 case 1: emit(nir_op_fnoise4_1
, dest_size
, srcs
); break;
1526 case 2: emit(nir_op_fnoise4_2
, dest_size
, srcs
); break;
1527 case 3: emit(nir_op_fnoise4_3
, dest_size
, srcs
); break;
1528 case 4: emit(nir_op_fnoise4_4
, dest_size
, srcs
); break;
1529 default: unreachable("not reached");
1533 unreachable("not reached");
1536 case ir_unop_get_buffer_size
: {
1537 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
1539 nir_intrinsic_get_buffer_size
);
1540 load
->num_components
= ir
->type
->vector_elements
;
1541 load
->src
[0] = evaluate_rvalue(ir
->operands
[0]);
1542 add_instr(&load
->instr
, ir
->type
->vector_elements
);
1554 case ir_binop_bit_and
:
1555 case ir_binop_bit_or
:
1556 case ir_binop_bit_xor
:
1557 case ir_binop_logic_and
:
1558 case ir_binop_logic_or
:
1559 case ir_binop_logic_xor
:
1560 case ir_binop_lshift
:
1561 case ir_binop_rshift
:
1562 switch (ir
->operation
) {
1564 if (out_type
== GLSL_TYPE_FLOAT
)
1570 if (out_type
== GLSL_TYPE_FLOAT
)
1576 if (out_type
== GLSL_TYPE_FLOAT
)
1582 if (out_type
== GLSL_TYPE_FLOAT
)
1584 else if (out_type
== GLSL_TYPE_INT
)
1590 if (out_type
== GLSL_TYPE_FLOAT
)
1596 if (out_type
== GLSL_TYPE_FLOAT
)
1598 else if (out_type
== GLSL_TYPE_INT
)
1604 if (out_type
== GLSL_TYPE_FLOAT
)
1606 else if (out_type
== GLSL_TYPE_INT
)
1611 case ir_binop_bit_and
:
1614 case ir_binop_bit_or
:
1617 case ir_binop_bit_xor
:
1620 case ir_binop_logic_and
:
1626 case ir_binop_logic_or
:
1632 case ir_binop_logic_xor
:
1638 case ir_binop_lshift
:
1641 case ir_binop_rshift
:
1642 if (out_type
== GLSL_TYPE_INT
)
1652 unreachable("not reached");
1655 instr
= emit(op
, dest_size
, srcs
);
1657 if (ir
->operands
[0]->type
->vector_elements
!= 1 &&
1658 ir
->operands
[1]->type
->vector_elements
== 1) {
1659 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
;
1661 instr
->src
[1].swizzle
[i
] = 0;
1665 if (ir
->operands
[1]->type
->vector_elements
!= 1 &&
1666 ir
->operands
[0]->type
->vector_elements
== 1) {
1667 for (unsigned i
= 0; i
< ir
->operands
[1]->type
->vector_elements
;
1669 instr
->src
[0].swizzle
[i
] = 0;
1674 case ir_binop_imul_high
:
1675 emit(out_type
== GLSL_TYPE_UINT
? nir_op_umul_high
: nir_op_imul_high
,
1678 case ir_binop_carry
: emit(nir_op_uadd_carry
, dest_size
, srcs
); break;
1679 case ir_binop_borrow
: emit(nir_op_usub_borrow
, dest_size
, srcs
); break;
1681 if (supports_ints
) {
1682 if (types
[0] == GLSL_TYPE_FLOAT
)
1683 emit(nir_op_flt
, dest_size
, srcs
);
1684 else if (types
[0] == GLSL_TYPE_INT
)
1685 emit(nir_op_ilt
, dest_size
, srcs
);
1687 emit(nir_op_ult
, dest_size
, srcs
);
1689 emit(nir_op_slt
, dest_size
, srcs
);
1692 case ir_binop_greater
:
1693 if (supports_ints
) {
1694 if (types
[0] == GLSL_TYPE_FLOAT
)
1695 emit(nir_op_flt
, dest_size
, srcs
[1], srcs
[0]);
1696 else if (types
[0] == GLSL_TYPE_INT
)
1697 emit(nir_op_ilt
, dest_size
, srcs
[1], srcs
[0]);
1699 emit(nir_op_ult
, dest_size
, srcs
[1], srcs
[0]);
1701 emit(nir_op_slt
, dest_size
, srcs
[1], srcs
[0]);
1704 case ir_binop_lequal
:
1705 if (supports_ints
) {
1706 if (types
[0] == GLSL_TYPE_FLOAT
)
1707 emit(nir_op_fge
, dest_size
, srcs
[1], srcs
[0]);
1708 else if (types
[0] == GLSL_TYPE_INT
)
1709 emit(nir_op_ige
, dest_size
, srcs
[1], srcs
[0]);
1711 emit(nir_op_uge
, dest_size
, srcs
[1], srcs
[0]);
1713 emit(nir_op_slt
, dest_size
, srcs
[1], srcs
[0]);
1716 case ir_binop_gequal
:
1717 if (supports_ints
) {
1718 if (types
[0] == GLSL_TYPE_FLOAT
)
1719 emit(nir_op_fge
, dest_size
, srcs
);
1720 else if (types
[0] == GLSL_TYPE_INT
)
1721 emit(nir_op_ige
, dest_size
, srcs
);
1723 emit(nir_op_uge
, dest_size
, srcs
);
1725 emit(nir_op_slt
, dest_size
, srcs
);
1728 case ir_binop_equal
:
1729 if (supports_ints
) {
1730 if (types
[0] == GLSL_TYPE_FLOAT
)
1731 emit(nir_op_feq
, dest_size
, srcs
);
1733 emit(nir_op_ieq
, dest_size
, srcs
);
1735 emit(nir_op_seq
, dest_size
, srcs
);
1738 case ir_binop_nequal
:
1739 if (supports_ints
) {
1740 if (types
[0] == GLSL_TYPE_FLOAT
)
1741 emit(nir_op_fne
, dest_size
, srcs
);
1743 emit(nir_op_ine
, dest_size
, srcs
);
1745 emit(nir_op_sne
, dest_size
, srcs
);
1748 case ir_binop_all_equal
:
1749 if (supports_ints
) {
1750 if (types
[0] == GLSL_TYPE_FLOAT
) {
1751 switch (ir
->operands
[0]->type
->vector_elements
) {
1752 case 1: emit(nir_op_feq
, dest_size
, srcs
); break;
1753 case 2: emit(nir_op_ball_fequal2
, dest_size
, srcs
); break;
1754 case 3: emit(nir_op_ball_fequal3
, dest_size
, srcs
); break;
1755 case 4: emit(nir_op_ball_fequal4
, dest_size
, srcs
); break;
1757 unreachable("not reached");
1760 switch (ir
->operands
[0]->type
->vector_elements
) {
1761 case 1: emit(nir_op_ieq
, dest_size
, srcs
); break;
1762 case 2: emit(nir_op_ball_iequal2
, dest_size
, srcs
); break;
1763 case 3: emit(nir_op_ball_iequal3
, dest_size
, srcs
); break;
1764 case 4: emit(nir_op_ball_iequal4
, dest_size
, srcs
); break;
1766 unreachable("not reached");
1770 switch (ir
->operands
[0]->type
->vector_elements
) {
1771 case 1: emit(nir_op_seq
, dest_size
, srcs
); break;
1772 case 2: emit(nir_op_fall_equal2
, dest_size
, srcs
); break;
1773 case 3: emit(nir_op_fall_equal3
, dest_size
, srcs
); break;
1774 case 4: emit(nir_op_fall_equal4
, dest_size
, srcs
); break;
1776 unreachable("not reached");
1780 case ir_binop_any_nequal
:
1781 if (supports_ints
) {
1782 if (types
[0] == GLSL_TYPE_FLOAT
) {
1783 switch (ir
->operands
[0]->type
->vector_elements
) {
1784 case 1: emit(nir_op_fne
, dest_size
, srcs
); break;
1785 case 2: emit(nir_op_bany_fnequal2
, dest_size
, srcs
); break;
1786 case 3: emit(nir_op_bany_fnequal3
, dest_size
, srcs
); break;
1787 case 4: emit(nir_op_bany_fnequal4
, dest_size
, srcs
); break;
1789 unreachable("not reached");
1792 switch (ir
->operands
[0]->type
->vector_elements
) {
1793 case 1: emit(nir_op_ine
, dest_size
, srcs
); break;
1794 case 2: emit(nir_op_bany_inequal2
, dest_size
, srcs
); break;
1795 case 3: emit(nir_op_bany_inequal3
, dest_size
, srcs
); break;
1796 case 4: emit(nir_op_bany_inequal4
, dest_size
, srcs
); break;
1798 unreachable("not reached");
1802 switch (ir
->operands
[0]->type
->vector_elements
) {
1803 case 1: emit(nir_op_sne
, dest_size
, srcs
); break;
1804 case 2: emit(nir_op_fany_nequal2
, dest_size
, srcs
); break;
1805 case 3: emit(nir_op_fany_nequal3
, dest_size
, srcs
); break;
1806 case 4: emit(nir_op_fany_nequal4
, dest_size
, srcs
); break;
1808 unreachable("not reached");
1813 switch (ir
->operands
[0]->type
->vector_elements
) {
1814 case 2: emit(nir_op_fdot2
, dest_size
, srcs
); break;
1815 case 3: emit(nir_op_fdot3
, dest_size
, srcs
); break;
1816 case 4: emit(nir_op_fdot4
, dest_size
, srcs
); break;
1818 unreachable("not reached");
1822 case ir_binop_pack_half_2x16_split
:
1823 emit(nir_op_pack_half_2x16_split
, dest_size
, srcs
);
1825 case ir_binop_bfm
: emit(nir_op_bfm
, dest_size
, srcs
); break;
1826 case ir_binop_ldexp
: emit(nir_op_ldexp
, dest_size
, srcs
); break;
1827 case ir_triop_fma
: emit(nir_op_ffma
, dest_size
, srcs
); break;
1829 instr
= emit(nir_op_flrp
, dest_size
, srcs
);
1830 if (ir
->operands
[0]->type
->vector_elements
!= 1 &&
1831 ir
->operands
[2]->type
->vector_elements
== 1) {
1832 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
;
1834 instr
->src
[2].swizzle
[i
] = 0;
1840 emit(nir_op_bcsel
, dest_size
, srcs
);
1842 emit(nir_op_fcsel
, dest_size
, srcs
);
1845 instr
= emit(nir_op_bfi
, dest_size
, srcs
);
1846 for (unsigned i
= 0; i
< ir
->operands
[1]->type
->vector_elements
; i
++) {
1847 instr
->src
[0].swizzle
[i
] = 0;
1850 case ir_triop_bitfield_extract
:
1851 instr
= emit(out_type
== GLSL_TYPE_INT
? nir_op_ibitfield_extract
:
1852 nir_op_ubitfield_extract
, dest_size
, srcs
);
1853 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1854 instr
->src
[1].swizzle
[i
] = 0;
1855 instr
->src
[2].swizzle
[i
] = 0;
1858 case ir_quadop_bitfield_insert
:
1859 instr
= emit(nir_op_bitfield_insert
, dest_size
, srcs
);
1860 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1861 instr
->src
[2].swizzle
[i
] = 0;
1862 instr
->src
[3].swizzle
[i
] = 0;
1865 case ir_quadop_vector
:
1866 switch (ir
->type
->vector_elements
) {
1867 case 2: emit(nir_op_vec2
, dest_size
, srcs
); break;
1868 case 3: emit(nir_op_vec3
, dest_size
, srcs
); break;
1869 case 4: emit(nir_op_vec4
, dest_size
, srcs
); break;
1870 default: unreachable("not reached");
1875 unreachable("not reached");
1880 nir_visitor::visit(ir_swizzle
*ir
)
1882 nir_alu_instr
*instr
= emit(supports_ints
? nir_op_imov
: nir_op_fmov
,
1883 ir
->type
->vector_elements
,
1884 evaluate_rvalue(ir
->val
));
1886 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1887 for (unsigned i
= 0; i
< ir
->type
->vector_elements
; i
++)
1888 instr
->src
[0].swizzle
[i
] = swizzle
[i
];
1892 nir_visitor::visit(ir_texture
*ir
)
1899 num_srcs
= 1; /* coordinate */
1904 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1905 num_srcs
= 2; /* coordinate, bias/lod */
1909 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1915 if (ir
->lod_info
.lod
!= NULL
)
1916 num_srcs
= 2; /* coordinate, lod */
1918 num_srcs
= 1; /* coordinate */
1922 op
= nir_texop_txf_ms
;
1923 num_srcs
= 2; /* coordinate, sample_index */
1928 if (ir
->lod_info
.lod
!= NULL
)
1929 num_srcs
= 1; /* lod */
1936 num_srcs
= 1; /* coordinate */
1941 num_srcs
= 1; /* coordinate */
1944 case ir_query_levels
:
1945 op
= nir_texop_query_levels
;
1949 case ir_texture_samples
:
1950 op
= nir_texop_texture_samples
;
1955 unreachable("not reached");
1958 if (ir
->projector
!= NULL
)
1960 if (ir
->shadow_comparitor
!= NULL
)
1962 if (ir
->offset
!= NULL
&& ir
->offset
->as_constant() == NULL
)
1965 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
1968 instr
->sampler_dim
=
1969 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
1970 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
1971 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
1972 if (instr
->is_shadow
)
1973 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
1974 switch (ir
->type
->base_type
) {
1975 case GLSL_TYPE_FLOAT
:
1976 instr
->dest_type
= nir_type_float
;
1979 instr
->dest_type
= nir_type_int
;
1981 case GLSL_TYPE_UINT
:
1982 instr
->dest_type
= nir_type_unsigned
;
1985 unreachable("not reached");
1988 instr
->sampler
= evaluate_deref(&instr
->instr
, ir
->sampler
);
1990 unsigned src_number
= 0;
1992 if (ir
->coordinate
!= NULL
) {
1993 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
1994 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->coordinate
);
1995 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
1999 if (ir
->projector
!= NULL
) {
2000 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->projector
);
2001 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2005 if (ir
->shadow_comparitor
!= NULL
) {
2006 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->shadow_comparitor
);
2007 instr
->src
[src_number
].src_type
= nir_tex_src_comparitor
;
2011 if (ir
->offset
!= NULL
) {
2012 /* we don't support multiple offsets yet */
2013 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2015 ir_constant
*const_offset
= ir
->offset
->as_constant();
2016 if (const_offset
!= NULL
) {
2017 for (unsigned i
= 0; i
< const_offset
->type
->vector_elements
; i
++)
2018 instr
->const_offset
[i
] = const_offset
->value
.i
[i
];
2020 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->offset
);
2021 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2028 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.bias
);
2029 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2036 if (ir
->lod_info
.lod
!= NULL
) {
2037 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.lod
);
2038 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2044 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.grad
.dPdx
);
2045 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2047 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.grad
.dPdy
);
2048 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2053 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.sample_index
);
2054 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2059 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2066 assert(src_number
== num_srcs
);
2068 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
));
2072 nir_visitor::visit(ir_constant
*ir
)
2075 * We don't know if this variable is an an array or struct that gets
2076 * dereferenced, so do the safe thing an make it a variable with a
2077 * constant initializer and return a dereference.
2081 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2082 var
->data
.read_only
= true;
2083 var
->constant_initializer
= constant_copy(ir
, var
);
2085 this->deref_head
= nir_deref_var_create(this->shader
, var
);
2086 this->deref_tail
= &this->deref_head
->deref
;
2090 nir_visitor::visit(ir_dereference_variable
*ir
)
2092 struct hash_entry
*entry
=
2093 _mesa_hash_table_search(this->var_table
, ir
->var
);
2095 nir_variable
*var
= (nir_variable
*) entry
->data
;
2097 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
2098 this->deref_head
= deref
;
2099 this->deref_tail
= &deref
->deref
;
2103 nir_visitor::visit(ir_dereference_record
*ir
)
2105 ir
->record
->accept(this);
2107 int field_index
= this->deref_tail
->type
->field_index(ir
->field
);
2108 assert(field_index
>= 0);
2110 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
2111 deref
->deref
.type
= ir
->type
;
2112 this->deref_tail
->child
= &deref
->deref
;
2113 this->deref_tail
= &deref
->deref
;
2117 nir_visitor::visit(ir_dereference_array
*ir
)
2119 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
2120 deref
->deref
.type
= ir
->type
;
2122 ir_constant
*const_index
= ir
->array_index
->as_constant();
2123 if (const_index
!= NULL
) {
2124 deref
->deref_array_type
= nir_deref_array_type_direct
;
2125 deref
->base_offset
= const_index
->value
.u
[0];
2127 deref
->deref_array_type
= nir_deref_array_type_indirect
;
2128 deref
->indirect
= evaluate_rvalue(ir
->array_index
);
2131 ir
->array
->accept(this);
2133 this->deref_tail
->child
= &deref
->deref
;
2134 ralloc_steal(this->deref_tail
, deref
);
2135 this->deref_tail
= &deref
->deref
;
2139 nir_visitor::visit(ir_barrier
*ir
)
2141 nir_intrinsic_instr
*instr
=
2142 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2143 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);