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 "ir_visitor.h"
30 #include "ir_hierarchical_visitor.h"
34 * pass to lower GLSL IR to NIR
36 * This will lower variable dereferences to loads/stores of corresponding
37 * variables in NIR - the variables will be converted to registers in a later
43 class nir_visitor
: public ir_visitor
46 nir_visitor(nir_shader
*shader
, gl_shader_stage stage
);
49 virtual void visit(ir_variable
*);
50 virtual void visit(ir_function
*);
51 virtual void visit(ir_function_signature
*);
52 virtual void visit(ir_loop
*);
53 virtual void visit(ir_if
*);
54 virtual void visit(ir_discard
*);
55 virtual void visit(ir_loop_jump
*);
56 virtual void visit(ir_return
*);
57 virtual void visit(ir_call
*);
58 virtual void visit(ir_assignment
*);
59 virtual void visit(ir_emit_vertex
*);
60 virtual void visit(ir_end_primitive
*);
61 virtual void visit(ir_expression
*);
62 virtual void visit(ir_swizzle
*);
63 virtual void visit(ir_texture
*);
64 virtual void visit(ir_constant
*);
65 virtual void visit(ir_dereference_variable
*);
66 virtual void visit(ir_dereference_record
*);
67 virtual void visit(ir_dereference_array
*);
68 virtual void visit(ir_barrier
*);
70 void create_function(ir_function
*ir
);
73 void create_overload(ir_function_signature
*ir
, nir_function
*function
);
74 void add_instr(nir_instr
*instr
, unsigned num_components
);
75 nir_src
evaluate_rvalue(ir_rvalue
*ir
);
77 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_src
*srcs
);
78 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_src src1
);
79 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_src src1
,
81 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_src src1
,
82 nir_src src2
, nir_src src3
);
87 gl_shader_stage stage
;
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(struct gl_shader
*sh
, const nir_shader_compiler_options
*options
)
134 nir_shader
*shader
= nir_shader_create(NULL
, options
);
136 nir_visitor
v1(shader
, sh
->Stage
);
137 nir_function_visitor
v2(&v1
);
139 visit_exec_list(sh
->ir
, &v1
);
144 nir_visitor::nir_visitor(nir_shader
*shader
, gl_shader_stage stage
)
146 this->supports_ints
= shader
->options
->native_integers
;
147 this->shader
= shader
;
149 this->is_global
= true;
150 this->var_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
151 _mesa_key_pointer_equal
);
152 this->overload_table
= _mesa_hash_table_create(NULL
, _mesa_hash_pointer
,
153 _mesa_key_pointer_equal
);
156 nir_visitor::~nir_visitor()
158 _mesa_hash_table_destroy(this->var_table
, NULL
);
159 _mesa_hash_table_destroy(this->overload_table
, NULL
);
163 nir_visitor::evaluate_deref(nir_instr
*mem_ctx
, ir_instruction
*ir
)
166 ralloc_steal(mem_ctx
, this->deref_head
);
167 return this->deref_head
;
170 static nir_constant
*
171 constant_copy(ir_constant
*ir
, void *mem_ctx
)
176 nir_constant
*ret
= ralloc(mem_ctx
, nir_constant
);
178 unsigned total_elems
= ir
->type
->components();
180 switch (ir
->type
->base_type
) {
182 for (i
= 0; i
< total_elems
; i
++)
183 ret
->value
.u
[i
] = ir
->value
.u
[i
];
187 for (i
= 0; i
< total_elems
; i
++)
188 ret
->value
.i
[i
] = ir
->value
.i
[i
];
191 case GLSL_TYPE_FLOAT
:
192 for (i
= 0; i
< total_elems
; i
++)
193 ret
->value
.f
[i
] = ir
->value
.f
[i
];
197 for (i
= 0; i
< total_elems
; i
++)
198 ret
->value
.b
[i
] = ir
->value
.b
[i
];
201 case GLSL_TYPE_STRUCT
:
202 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
205 foreach_in_list(ir_constant
, field
, &ir
->components
) {
206 ret
->elements
[i
] = constant_copy(field
, mem_ctx
);
211 case GLSL_TYPE_ARRAY
:
212 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
215 for (i
= 0; i
< ir
->type
->length
; i
++)
216 ret
->elements
[i
] = constant_copy(ir
->array_elements
[i
], mem_ctx
);
220 unreachable("not reached");
227 nir_visitor::visit(ir_variable
*ir
)
229 nir_variable
*var
= ralloc(shader
, nir_variable
);
230 var
->type
= ir
->type
;
231 var
->name
= ralloc_strdup(var
, ir
->name
);
233 if (ir
->is_interface_instance() && ir
->get_max_ifc_array_access() != NULL
) {
234 unsigned size
= ir
->get_interface_type()->length
;
235 var
->max_ifc_array_access
= ralloc_array(var
, unsigned, size
);
236 memcpy(var
->max_ifc_array_access
, ir
->get_max_ifc_array_access(),
237 size
* sizeof(unsigned));
239 var
->max_ifc_array_access
= NULL
;
242 var
->data
.read_only
= ir
->data
.read_only
;
243 var
->data
.centroid
= ir
->data
.centroid
;
244 var
->data
.sample
= ir
->data
.sample
;
245 var
->data
.invariant
= ir
->data
.invariant
;
246 var
->data
.location
= ir
->data
.location
;
248 switch(ir
->data
.mode
) {
250 case ir_var_temporary
:
252 var
->data
.mode
= nir_var_global
;
254 var
->data
.mode
= nir_var_local
;
257 case ir_var_function_in
:
258 case ir_var_function_out
:
259 case ir_var_function_inout
:
260 case ir_var_const_in
:
261 var
->data
.mode
= nir_var_local
;
264 case ir_var_shader_in
:
265 if (stage
== MESA_SHADER_FRAGMENT
&&
266 ir
->data
.location
== VARYING_SLOT_FACE
) {
267 /* For whatever reason, GLSL IR makes gl_FrontFacing an input */
268 var
->data
.location
= SYSTEM_VALUE_FRONT_FACE
;
269 var
->data
.mode
= nir_var_system_value
;
271 var
->data
.mode
= nir_var_shader_in
;
275 case ir_var_shader_out
:
276 var
->data
.mode
= nir_var_shader_out
;
280 var
->data
.mode
= nir_var_uniform
;
283 case ir_var_shader_storage
:
284 var
->data
.mode
= nir_var_shader_storage
;
287 case ir_var_system_value
:
288 var
->data
.mode
= nir_var_system_value
;
292 unreachable("not reached");
295 var
->data
.interpolation
= ir
->data
.interpolation
;
296 var
->data
.origin_upper_left
= ir
->data
.origin_upper_left
;
297 var
->data
.pixel_center_integer
= ir
->data
.pixel_center_integer
;
298 var
->data
.explicit_location
= ir
->data
.explicit_location
;
299 var
->data
.explicit_index
= ir
->data
.explicit_index
;
300 var
->data
.explicit_binding
= ir
->data
.explicit_binding
;
301 var
->data
.has_initializer
= ir
->data
.has_initializer
;
302 var
->data
.is_unmatched_generic_inout
= ir
->data
.is_unmatched_generic_inout
;
303 var
->data
.location_frac
= ir
->data
.location_frac
;
304 var
->data
.from_named_ifc_block_array
= ir
->data
.from_named_ifc_block_array
;
305 var
->data
.from_named_ifc_block_nonarray
= ir
->data
.from_named_ifc_block_nonarray
;
307 switch (ir
->data
.depth_layout
) {
308 case ir_depth_layout_none
:
309 var
->data
.depth_layout
= nir_depth_layout_none
;
311 case ir_depth_layout_any
:
312 var
->data
.depth_layout
= nir_depth_layout_any
;
314 case ir_depth_layout_greater
:
315 var
->data
.depth_layout
= nir_depth_layout_greater
;
317 case ir_depth_layout_less
:
318 var
->data
.depth_layout
= nir_depth_layout_less
;
320 case ir_depth_layout_unchanged
:
321 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
324 unreachable("not reached");
327 var
->data
.index
= ir
->data
.index
;
328 var
->data
.binding
= ir
->data
.binding
;
329 /* XXX Get rid of buffer_index */
330 var
->data
.atomic
.buffer_index
= ir
->data
.binding
;
331 var
->data
.atomic
.offset
= ir
->data
.atomic
.offset
;
332 var
->data
.image
.read_only
= ir
->data
.image_read_only
;
333 var
->data
.image
.write_only
= ir
->data
.image_write_only
;
334 var
->data
.image
.coherent
= ir
->data
.image_coherent
;
335 var
->data
.image
._volatile
= ir
->data
.image_volatile
;
336 var
->data
.image
.restrict_flag
= ir
->data
.image_restrict
;
337 var
->data
.image
.format
= ir
->data
.image_format
;
338 var
->data
.max_array_access
= ir
->data
.max_array_access
;
340 var
->num_state_slots
= ir
->get_num_state_slots();
341 if (var
->num_state_slots
> 0) {
342 var
->state_slots
= ralloc_array(var
, nir_state_slot
,
343 var
->num_state_slots
);
345 ir_state_slot
*state_slots
= ir
->get_state_slots();
346 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
347 for (unsigned j
= 0; j
< 5; j
++)
348 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
349 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
352 var
->state_slots
= NULL
;
355 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
357 var
->interface_type
= ir
->get_interface_type();
359 switch (var
->data
.mode
) {
361 exec_list_push_tail(&impl
->locals
, &var
->node
);
365 exec_list_push_tail(&shader
->globals
, &var
->node
);
368 case nir_var_shader_in
:
369 exec_list_push_tail(&shader
->inputs
, &var
->node
);
372 case nir_var_shader_out
:
373 exec_list_push_tail(&shader
->outputs
, &var
->node
);
376 case nir_var_uniform
:
377 case nir_var_shader_storage
:
378 exec_list_push_tail(&shader
->uniforms
, &var
->node
);
381 case nir_var_system_value
:
382 exec_list_push_tail(&shader
->system_values
, &var
->node
);
386 unreachable("not reached");
389 _mesa_hash_table_insert(var_table
, ir
, var
);
394 nir_function_visitor::visit_enter(ir_function
*ir
)
396 visitor
->create_function(ir
);
397 return visit_continue_with_parent
;
402 nir_visitor::create_function(ir_function
*ir
)
404 nir_function
*func
= nir_function_create(this->shader
, ir
->name
);
405 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
406 create_overload(sig
, func
);
413 nir_visitor::create_overload(ir_function_signature
*ir
, nir_function
*function
)
415 if (ir
->is_intrinsic
)
418 nir_function_overload
*overload
= nir_function_overload_create(function
);
420 unsigned num_params
= ir
->parameters
.length();
421 overload
->num_params
= num_params
;
422 overload
->params
= ralloc_array(shader
, nir_parameter
, num_params
);
425 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
426 switch (param
->data
.mode
) {
427 case ir_var_function_in
:
428 overload
->params
[i
].param_type
= nir_parameter_in
;
431 case ir_var_function_out
:
432 overload
->params
[i
].param_type
= nir_parameter_out
;
435 case ir_var_function_inout
:
436 overload
->params
[i
].param_type
= nir_parameter_inout
;
440 unreachable("not reached");
443 overload
->params
[i
].type
= param
->type
;
447 overload
->return_type
= ir
->return_type
;
449 _mesa_hash_table_insert(this->overload_table
, ir
, overload
);
453 nir_visitor::visit(ir_function
*ir
)
455 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
460 nir_visitor::visit(ir_function_signature
*ir
)
462 if (ir
->is_intrinsic
)
465 struct hash_entry
*entry
=
466 _mesa_hash_table_search(this->overload_table
, ir
);
469 nir_function_overload
*overload
= (nir_function_overload
*) entry
->data
;
471 if (ir
->is_defined
) {
472 nir_function_impl
*impl
= nir_function_impl_create(overload
);
475 unsigned num_params
= overload
->num_params
;
476 impl
->num_params
= num_params
;
477 impl
->params
= ralloc_array(this->shader
, nir_variable
*, num_params
);
479 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
481 impl
->params
[i
] = this->var
;
485 if (overload
->return_type
== glsl_type::void_type
) {
486 impl
->return_var
= NULL
;
488 impl
->return_var
= ralloc(this->shader
, nir_variable
);
489 impl
->return_var
->name
= ralloc_strdup(impl
->return_var
,
491 impl
->return_var
->type
= overload
->return_type
;
494 this->is_global
= false;
496 this->cf_node_list
= &impl
->body
;
497 visit_exec_list(&ir
->body
, this);
499 this->is_global
= true;
501 overload
->impl
= NULL
;
506 nir_visitor::visit(ir_loop
*ir
)
508 exec_list
*old_list
= this->cf_node_list
;
510 nir_loop
*loop
= nir_loop_create(this->shader
);
511 nir_cf_node_insert_end(old_list
, &loop
->cf_node
);
512 this->cf_node_list
= &loop
->body
;
513 visit_exec_list(&ir
->body_instructions
, this);
515 this->cf_node_list
= old_list
;
519 nir_visitor::visit(ir_if
*ir
)
521 nir_src condition
= evaluate_rvalue(ir
->condition
);
523 exec_list
*old_list
= this->cf_node_list
;
525 nir_if
*if_stmt
= nir_if_create(this->shader
);
526 if_stmt
->condition
= condition
;
527 nir_cf_node_insert_end(old_list
, &if_stmt
->cf_node
);
529 this->cf_node_list
= &if_stmt
->then_list
;
530 visit_exec_list(&ir
->then_instructions
, this);
532 this->cf_node_list
= &if_stmt
->else_list
;
533 visit_exec_list(&ir
->else_instructions
, this);
535 this->cf_node_list
= old_list
;
539 nir_visitor::visit(ir_discard
*ir
)
542 * discards aren't treated as control flow, because before we lower them
543 * they can appear anywhere in the shader and the stuff after them may still
544 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
545 * discards will be immediately followed by a return.
548 nir_intrinsic_instr
*discard
;
550 discard
= nir_intrinsic_instr_create(this->shader
,
551 nir_intrinsic_discard_if
);
552 discard
->src
[0] = evaluate_rvalue(ir
->condition
);
554 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
556 nir_instr_insert_after_cf_list(this->cf_node_list
, &discard
->instr
);
560 nir_visitor::visit(ir_emit_vertex
*ir
)
562 nir_intrinsic_instr
*instr
=
563 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
564 instr
->const_index
[0] = ir
->stream_id();
565 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
569 nir_visitor::visit(ir_end_primitive
*ir
)
571 nir_intrinsic_instr
*instr
=
572 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
573 instr
->const_index
[0] = ir
->stream_id();
574 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
578 nir_visitor::visit(ir_loop_jump
*ir
)
582 case ir_loop_jump::jump_break
:
583 type
= nir_jump_break
;
585 case ir_loop_jump::jump_continue
:
586 type
= nir_jump_continue
;
589 unreachable("not reached");
592 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
593 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
597 nir_visitor::visit(ir_return
*ir
)
599 if (ir
->value
!= NULL
) {
600 nir_intrinsic_instr
*copy
=
601 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
603 copy
->variables
[0] = nir_deref_var_create(copy
, this->impl
->return_var
);
604 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->value
);
607 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
608 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
612 nir_visitor::visit(ir_call
*ir
)
614 if (ir
->callee
->is_intrinsic
) {
616 if (strcmp(ir
->callee_name(), "__intrinsic_atomic_read") == 0) {
617 op
= nir_intrinsic_atomic_counter_read_var
;
618 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_increment") == 0) {
619 op
= nir_intrinsic_atomic_counter_inc_var
;
620 } else if (strcmp(ir
->callee_name(), "__intrinsic_atomic_predecrement") == 0) {
621 op
= nir_intrinsic_atomic_counter_dec_var
;
622 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_load") == 0) {
623 op
= nir_intrinsic_image_load
;
624 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_store") == 0) {
625 op
= nir_intrinsic_image_store
;
626 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_add") == 0) {
627 op
= nir_intrinsic_image_atomic_add
;
628 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_min") == 0) {
629 op
= nir_intrinsic_image_atomic_min
;
630 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_max") == 0) {
631 op
= nir_intrinsic_image_atomic_max
;
632 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_and") == 0) {
633 op
= nir_intrinsic_image_atomic_and
;
634 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_or") == 0) {
635 op
= nir_intrinsic_image_atomic_or
;
636 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_xor") == 0) {
637 op
= nir_intrinsic_image_atomic_xor
;
638 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_exchange") == 0) {
639 op
= nir_intrinsic_image_atomic_exchange
;
640 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_atomic_comp_swap") == 0) {
641 op
= nir_intrinsic_image_atomic_comp_swap
;
642 } else if (strcmp(ir
->callee_name(), "__intrinsic_memory_barrier") == 0) {
643 op
= nir_intrinsic_memory_barrier
;
644 } else if (strcmp(ir
->callee_name(), "__intrinsic_image_size") == 0) {
645 op
= nir_intrinsic_image_size
;
647 unreachable("not reached");
650 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
653 case nir_intrinsic_atomic_counter_read_var
:
654 case nir_intrinsic_atomic_counter_inc_var
:
655 case nir_intrinsic_atomic_counter_dec_var
: {
656 ir_dereference
*param
=
657 (ir_dereference
*) ir
->actual_parameters
.get_head();
658 instr
->variables
[0] = evaluate_deref(&instr
->instr
, param
);
659 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, NULL
);
662 case nir_intrinsic_image_load
:
663 case nir_intrinsic_image_store
:
664 case nir_intrinsic_image_atomic_add
:
665 case nir_intrinsic_image_atomic_min
:
666 case nir_intrinsic_image_atomic_max
:
667 case nir_intrinsic_image_atomic_and
:
668 case nir_intrinsic_image_atomic_or
:
669 case nir_intrinsic_image_atomic_xor
:
670 case nir_intrinsic_image_atomic_exchange
:
671 case nir_intrinsic_image_atomic_comp_swap
:
672 case nir_intrinsic_image_size
: {
673 nir_ssa_undef_instr
*instr_undef
=
674 nir_ssa_undef_instr_create(shader
, 1);
675 nir_instr_insert_after_cf_list(this->cf_node_list
,
676 &instr_undef
->instr
);
678 /* Set the image variable dereference. */
679 exec_node
*param
= ir
->actual_parameters
.get_head();
680 ir_dereference
*image
= (ir_dereference
*)param
;
681 const glsl_type
*type
=
682 image
->variable_referenced()->type
->without_array();
684 instr
->variables
[0] = evaluate_deref(&instr
->instr
, image
);
685 param
= param
->get_next();
687 /* Set the intrinsic destination. */
688 if (ir
->return_deref
) {
689 const nir_intrinsic_info
*info
=
690 &nir_intrinsic_infos
[instr
->intrinsic
];
691 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
692 info
->dest_components
, NULL
);
695 if (op
== nir_intrinsic_image_size
)
698 /* Set the address argument, extending the coordinate vector to four
701 const nir_src src_addr
= evaluate_rvalue((ir_dereference
*)param
);
702 nir_alu_instr
*instr_addr
= nir_alu_instr_create(shader
, nir_op_vec4
);
703 nir_ssa_dest_init(&instr_addr
->instr
, &instr_addr
->dest
.dest
, 4, NULL
);
705 for (int i
= 0; i
< 4; i
++) {
706 if (i
< type
->coordinate_components()) {
707 instr_addr
->src
[i
].src
= src_addr
;
708 instr_addr
->src
[i
].swizzle
[0] = i
;
710 instr_addr
->src
[i
].src
= nir_src_for_ssa(&instr_undef
->def
);
714 nir_instr_insert_after_cf_list(cf_node_list
, &instr_addr
->instr
);
715 instr
->src
[0] = nir_src_for_ssa(&instr_addr
->dest
.dest
.ssa
);
716 param
= param
->get_next();
718 /* Set the sample argument, which is undefined for single-sample
721 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
722 instr
->src
[1] = evaluate_rvalue((ir_dereference
*)param
);
723 param
= param
->get_next();
725 instr
->src
[1] = nir_src_for_ssa(&instr_undef
->def
);
728 /* Set the intrinsic parameters. */
729 if (!param
->is_tail_sentinel()) {
730 instr
->src
[2] = evaluate_rvalue((ir_dereference
*)param
);
731 param
= param
->get_next();
734 if (!param
->is_tail_sentinel()) {
735 instr
->src
[3] = evaluate_rvalue((ir_dereference
*)param
);
736 param
= param
->get_next();
740 case nir_intrinsic_memory_barrier
:
743 unreachable("not reached");
746 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
748 if (ir
->return_deref
) {
749 nir_intrinsic_instr
*store_instr
=
750 nir_intrinsic_instr_create(shader
, nir_intrinsic_store_var
);
751 store_instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
753 store_instr
->variables
[0] =
754 evaluate_deref(&store_instr
->instr
, ir
->return_deref
);
755 store_instr
->src
[0] = nir_src_for_ssa(&instr
->dest
.ssa
);
757 nir_instr_insert_after_cf_list(this->cf_node_list
,
758 &store_instr
->instr
);
764 struct hash_entry
*entry
=
765 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
767 nir_function_overload
*callee
= (nir_function_overload
*) entry
->data
;
769 nir_call_instr
*instr
= nir_call_instr_create(this->shader
, callee
);
772 foreach_in_list(ir_dereference
, param
, &ir
->actual_parameters
) {
773 instr
->params
[i
] = evaluate_deref(&instr
->instr
, param
);
777 instr
->return_deref
= evaluate_deref(&instr
->instr
, ir
->return_deref
);
778 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);
782 nir_visitor::visit(ir_assignment
*ir
)
784 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
786 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
787 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
788 /* We're doing a plain-as-can-be copy, so emit a copy_var */
789 nir_intrinsic_instr
*copy
=
790 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_copy_var
);
792 copy
->variables
[0] = evaluate_deref(©
->instr
, ir
->lhs
);
793 copy
->variables
[1] = evaluate_deref(©
->instr
, ir
->rhs
);
796 nir_if
*if_stmt
= nir_if_create(this->shader
);
797 if_stmt
->condition
= evaluate_rvalue(ir
->condition
);
798 nir_cf_node_insert_end(this->cf_node_list
, &if_stmt
->cf_node
);
799 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, ©
->instr
);
801 nir_instr_insert_after_cf_list(this->cf_node_list
, ©
->instr
);
806 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
808 ir
->lhs
->accept(this);
809 nir_deref_var
*lhs_deref
= this->deref_head
;
810 nir_src src
= evaluate_rvalue(ir
->rhs
);
812 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
814 * We have no good way to update only part of a variable, so just load
815 * the LHS and do a vec operation to combine the old with the new, and
817 * back into the LHS. Copy propagation should get rid of the mess.
820 nir_intrinsic_instr
*load
=
821 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
822 load
->num_components
= ir
->lhs
->type
->vector_elements
;
823 nir_ssa_dest_init(&load
->instr
, &load
->dest
, num_components
, NULL
);
824 load
->variables
[0] = lhs_deref
;
825 ralloc_steal(load
, load
->variables
[0]);
826 nir_instr_insert_after_cf_list(this->cf_node_list
, &load
->instr
);
829 switch (ir
->lhs
->type
->vector_elements
) {
830 case 1: vec_op
= nir_op_imov
; break;
831 case 2: vec_op
= nir_op_vec2
; break;
832 case 3: vec_op
= nir_op_vec3
; break;
833 case 4: vec_op
= nir_op_vec4
; break;
834 default: unreachable("Invalid number of components"); break;
836 nir_alu_instr
*vec
= nir_alu_instr_create(this->shader
, vec_op
);
837 nir_ssa_dest_init(&vec
->instr
, &vec
->dest
.dest
, num_components
, NULL
);
838 vec
->dest
.write_mask
= (1 << num_components
) - 1;
840 unsigned component
= 0;
841 for (unsigned i
= 0; i
< ir
->lhs
->type
->vector_elements
; i
++) {
842 if (ir
->write_mask
& (1 << i
)) {
843 vec
->src
[i
].src
= src
;
845 /* GLSL IR will give us the input to the write-masked assignment
846 * in a single packed vector. So, for example, if the
847 * writemask is xzw, then we have to swizzle x -> x, y -> z,
848 * and z -> w and get the y component from the load.
850 vec
->src
[i
].swizzle
[0] = component
++;
852 vec
->src
[i
].src
.is_ssa
= true;
853 vec
->src
[i
].src
.ssa
= &load
->dest
.ssa
;
854 vec
->src
[i
].swizzle
[0] = i
;
858 nir_instr_insert_after_cf_list(this->cf_node_list
, &vec
->instr
);
861 src
.ssa
= &vec
->dest
.dest
.ssa
;
864 nir_intrinsic_instr
*store
=
865 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_store_var
);
866 store
->num_components
= ir
->lhs
->type
->vector_elements
;
867 nir_deref
*store_deref
= nir_copy_deref(store
, &lhs_deref
->deref
);
868 store
->variables
[0] = nir_deref_as_var(store_deref
);
872 nir_if
*if_stmt
= nir_if_create(this->shader
);
873 if_stmt
->condition
= evaluate_rvalue(ir
->condition
);
874 nir_cf_node_insert_end(this->cf_node_list
, &if_stmt
->cf_node
);
875 nir_instr_insert_after_cf_list(&if_stmt
->then_list
, &store
->instr
);
877 nir_instr_insert_after_cf_list(this->cf_node_list
, &store
->instr
);
882 * Given an instruction, returns a pointer to its destination or NULL if there
885 * Note that this only handles instructions we generate at this level.
888 get_instr_dest(nir_instr
*instr
)
890 nir_alu_instr
*alu_instr
;
891 nir_intrinsic_instr
*intrinsic_instr
;
892 nir_tex_instr
*tex_instr
;
894 switch (instr
->type
) {
895 case nir_instr_type_alu
:
896 alu_instr
= nir_instr_as_alu(instr
);
897 return &alu_instr
->dest
.dest
;
899 case nir_instr_type_intrinsic
:
900 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
901 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
902 return &intrinsic_instr
->dest
;
906 case nir_instr_type_tex
:
907 tex_instr
= nir_instr_as_tex(instr
);
908 return &tex_instr
->dest
;
911 unreachable("not reached");
918 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
)
920 nir_dest
*dest
= get_instr_dest(instr
);
922 nir_ssa_dest_init(instr
, dest
, num_components
, NULL
);
924 nir_instr_insert_after_cf_list(this->cf_node_list
, instr
);
925 this->result
= instr
;
929 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
932 if (ir
->as_dereference() || ir
->as_constant()) {
934 * A dereference is being used on the right hand side, which means we
935 * must emit a variable load.
938 nir_intrinsic_instr
*load_instr
=
939 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_var
);
940 load_instr
->num_components
= ir
->type
->vector_elements
;
941 load_instr
->variables
[0] = this->deref_head
;
942 ralloc_steal(load_instr
, load_instr
->variables
[0]);
943 add_instr(&load_instr
->instr
, ir
->type
->vector_elements
);
946 nir_dest
*dest
= get_instr_dest(this->result
);
947 assert(dest
->is_ssa
);
949 return nir_src_for_ssa(&dest
->ssa
);
953 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src
*srcs
)
955 nir_alu_instr
*instr
= nir_alu_instr_create(this->shader
, op
);
956 for (unsigned i
= 0; i
< nir_op_infos
[op
].num_inputs
; i
++)
957 instr
->src
[i
].src
= srcs
[i
];
958 instr
->dest
.write_mask
= (1 << dest_size
) - 1;
959 add_instr(&instr
->instr
, dest_size
);
964 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src src1
)
966 assert(nir_op_infos
[op
].num_inputs
== 1);
967 return emit(op
, dest_size
, &src1
);
971 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src src1
,
974 assert(nir_op_infos
[op
].num_inputs
== 2);
975 nir_src srcs
[] = { src1
, src2
};
976 return emit(op
, dest_size
, srcs
);
980 nir_visitor::emit(nir_op op
, unsigned dest_size
, nir_src src1
,
981 nir_src src2
, nir_src src3
)
983 assert(nir_op_infos
[op
].num_inputs
== 3);
984 nir_src srcs
[] = { src1
, src2
, src3
};
985 return emit(op
, dest_size
, srcs
);
989 nir_visitor::visit(ir_expression
*ir
)
991 /* Some special cases */
992 switch (ir
->operation
) {
993 case ir_binop_ubo_load
: {
994 ir_constant
*const_index
= ir
->operands
[1]->as_constant();
998 op
= nir_intrinsic_load_ubo
;
1000 op
= nir_intrinsic_load_ubo_indirect
;
1002 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(this->shader
, op
);
1003 load
->num_components
= ir
->type
->vector_elements
;
1004 load
->const_index
[0] = const_index
? const_index
->value
.u
[0] : 0; /* base offset */
1005 load
->const_index
[1] = 1; /* number of vec4's */
1006 load
->src
[0] = evaluate_rvalue(ir
->operands
[0]);
1008 load
->src
[1] = evaluate_rvalue(ir
->operands
[1]);
1009 add_instr(&load
->instr
, ir
->type
->vector_elements
);
1012 * In UBO's, a true boolean value is any non-zero value, but we consider
1013 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1016 if (ir
->type
->base_type
== GLSL_TYPE_BOOL
) {
1017 nir_load_const_instr
*const_zero
= nir_load_const_instr_create(shader
, 1);
1018 const_zero
->value
.u
[0] = 0;
1019 nir_instr_insert_after_cf_list(this->cf_node_list
, &const_zero
->instr
);
1021 nir_alu_instr
*compare
= nir_alu_instr_create(shader
, nir_op_ine
);
1022 compare
->src
[0].src
.is_ssa
= true;
1023 compare
->src
[0].src
.ssa
= &load
->dest
.ssa
;
1024 compare
->src
[1].src
.is_ssa
= true;
1025 compare
->src
[1].src
.ssa
= &const_zero
->def
;
1026 for (unsigned i
= 0; i
< ir
->type
->vector_elements
; i
++)
1027 compare
->src
[1].swizzle
[i
] = 0;
1028 compare
->dest
.write_mask
= (1 << ir
->type
->vector_elements
) - 1;
1030 add_instr(&compare
->instr
, ir
->type
->vector_elements
);
1036 case ir_unop_interpolate_at_centroid
:
1037 case ir_binop_interpolate_at_offset
:
1038 case ir_binop_interpolate_at_sample
: {
1039 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1040 ir_swizzle
*swizzle
= NULL
;
1042 /* the api does not allow a swizzle here, but the varying packing code
1043 * may have pushed one into here.
1045 swizzle
= ir
->operands
[0]->as_swizzle();
1047 deref
= swizzle
->val
->as_dereference();
1051 deref
->accept(this);
1053 nir_intrinsic_op op
;
1054 if (this->deref_head
->var
->data
.mode
== nir_var_shader_in
) {
1055 switch (ir
->operation
) {
1056 case ir_unop_interpolate_at_centroid
:
1057 op
= nir_intrinsic_interp_var_at_centroid
;
1059 case ir_binop_interpolate_at_offset
:
1060 op
= nir_intrinsic_interp_var_at_offset
;
1062 case ir_binop_interpolate_at_sample
:
1063 op
= nir_intrinsic_interp_var_at_sample
;
1066 unreachable("Invalid interpolation intrinsic");
1069 /* This case can happen if the vertex shader does not write the
1070 * given varying. In this case, the linker will lower it to a
1071 * global variable. Since interpolating a variable makes no
1072 * sense, we'll just turn it into a load which will probably
1073 * eventually end up as an SSA definition.
1075 assert(this->deref_head
->var
->data
.mode
== nir_var_global
);
1076 op
= nir_intrinsic_load_var
;
1079 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1080 intrin
->num_components
= deref
->type
->vector_elements
;
1081 intrin
->variables
[0] = this->deref_head
;
1082 ralloc_steal(intrin
, intrin
->variables
[0]);
1084 if (intrin
->intrinsic
== nir_intrinsic_interp_var_at_offset
||
1085 intrin
->intrinsic
== nir_intrinsic_interp_var_at_sample
)
1086 intrin
->src
[0] = evaluate_rvalue(ir
->operands
[1]);
1088 add_instr(&intrin
->instr
, deref
->type
->vector_elements
);
1091 nir_alu_instr
*mov
= nir_alu_instr_create(shader
, nir_op_imov
);
1092 mov
->dest
.write_mask
= (1 << swizzle
->type
->vector_elements
) - 1;
1093 mov
->src
[0].src
.is_ssa
= true;
1094 mov
->src
[0].src
.ssa
= &intrin
->dest
.ssa
;
1096 mov
->src
[0].swizzle
[0] = swizzle
->mask
.x
;
1097 mov
->src
[0].swizzle
[1] = swizzle
->mask
.y
;
1098 mov
->src
[0].swizzle
[2] = swizzle
->mask
.z
;
1099 mov
->src
[0].swizzle
[3] = swizzle
->mask
.w
;
1100 for (unsigned i
= deref
->type
->vector_elements
; i
< 4; i
++)
1101 mov
->src
[0].swizzle
[i
] = 0;
1103 add_instr(&mov
->instr
, swizzle
->type
->vector_elements
);
1114 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1115 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1117 glsl_base_type types
[4];
1118 for (unsigned i
= 0; i
< ir
->get_num_operands(); i
++)
1120 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1122 types
[i
] = GLSL_TYPE_FLOAT
;
1124 glsl_base_type out_type
;
1126 out_type
= ir
->type
->base_type
;
1128 out_type
= GLSL_TYPE_FLOAT
;
1130 unsigned dest_size
= ir
->type
->vector_elements
;
1132 nir_alu_instr
*instr
;
1135 switch (ir
->operation
) {
1136 case ir_unop_bit_not
: emit(nir_op_inot
, dest_size
, srcs
); break;
1137 case ir_unop_logic_not
:
1138 emit(supports_ints
? nir_op_inot
: nir_op_fnot
, dest_size
, srcs
);
1141 instr
= emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fneg
: nir_op_ineg
,
1145 instr
= emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fabs
: nir_op_iabs
,
1148 case ir_unop_saturate
:
1149 assert(types
[0] == GLSL_TYPE_FLOAT
);
1150 instr
= emit(nir_op_fsat
, dest_size
, srcs
);
1153 emit(types
[0] == GLSL_TYPE_FLOAT
? nir_op_fsign
: nir_op_isign
,
1156 case ir_unop_rcp
: emit(nir_op_frcp
, dest_size
, srcs
); break;
1157 case ir_unop_rsq
: emit(nir_op_frsq
, dest_size
, srcs
); break;
1158 case ir_unop_sqrt
: emit(nir_op_fsqrt
, dest_size
, srcs
); break;
1159 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1160 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1161 case ir_unop_exp2
: emit(nir_op_fexp2
, dest_size
, srcs
); break;
1162 case ir_unop_log2
: emit(nir_op_flog2
, dest_size
, srcs
); break;
1164 emit(supports_ints
? nir_op_i2f
: nir_op_fmov
, dest_size
, srcs
);
1167 emit(supports_ints
? nir_op_u2f
: nir_op_fmov
, dest_size
, srcs
);
1170 emit(supports_ints
? nir_op_b2f
: nir_op_fmov
, dest_size
, srcs
);
1172 case ir_unop_f2i
: emit(nir_op_f2i
, dest_size
, srcs
); break;
1173 case ir_unop_f2u
: emit(nir_op_f2u
, dest_size
, srcs
); break;
1174 case ir_unop_f2b
: emit(nir_op_f2b
, dest_size
, srcs
); break;
1175 case ir_unop_i2b
: emit(nir_op_i2b
, dest_size
, srcs
); break;
1176 case ir_unop_b2i
: emit(nir_op_b2i
, dest_size
, srcs
); break;
1179 case ir_unop_bitcast_i2f
:
1180 case ir_unop_bitcast_f2i
:
1181 case ir_unop_bitcast_u2f
:
1182 case ir_unop_bitcast_f2u
:
1183 case ir_unop_subroutine_to_int
:
1185 emit(nir_op_imov
, dest_size
, srcs
);
1188 switch (ir
->operands
[0]->type
->vector_elements
) {
1190 emit(supports_ints
? nir_op_bany2
: nir_op_fany2
,
1194 emit(supports_ints
? nir_op_bany3
: nir_op_fany3
,
1198 emit(supports_ints
? nir_op_bany4
: nir_op_fany4
,
1202 unreachable("not reached");
1205 case ir_unop_trunc
: emit(nir_op_ftrunc
, dest_size
, srcs
); break;
1206 case ir_unop_ceil
: emit(nir_op_fceil
, dest_size
, srcs
); break;
1207 case ir_unop_floor
: emit(nir_op_ffloor
, dest_size
, srcs
); break;
1208 case ir_unop_fract
: emit(nir_op_ffract
, dest_size
, srcs
); break;
1209 case ir_unop_round_even
: emit(nir_op_fround_even
, dest_size
, srcs
); break;
1210 case ir_unop_sin
: emit(nir_op_fsin
, dest_size
, srcs
); break;
1211 case ir_unop_cos
: emit(nir_op_fcos
, dest_size
, srcs
); break;
1212 case ir_unop_dFdx
: emit(nir_op_fddx
, dest_size
, srcs
); break;
1213 case ir_unop_dFdy
: emit(nir_op_fddy
, dest_size
, srcs
); break;
1214 case ir_unop_dFdx_fine
: emit(nir_op_fddx_fine
, dest_size
, srcs
); break;
1215 case ir_unop_dFdy_fine
: emit(nir_op_fddy_fine
, dest_size
, srcs
); break;
1216 case ir_unop_dFdx_coarse
: emit(nir_op_fddx_coarse
, dest_size
, srcs
); break;
1217 case ir_unop_dFdy_coarse
: emit(nir_op_fddy_coarse
, dest_size
, srcs
); break;
1218 case ir_unop_pack_snorm_2x16
:
1219 emit(nir_op_pack_snorm_2x16
, dest_size
, srcs
);
1221 case ir_unop_pack_snorm_4x8
:
1222 emit(nir_op_pack_snorm_4x8
, dest_size
, srcs
);
1224 case ir_unop_pack_unorm_2x16
:
1225 emit(nir_op_pack_unorm_2x16
, dest_size
, srcs
);
1227 case ir_unop_pack_unorm_4x8
:
1228 emit(nir_op_pack_unorm_4x8
, dest_size
, srcs
);
1230 case ir_unop_pack_half_2x16
:
1231 emit(nir_op_pack_half_2x16
, dest_size
, srcs
);
1233 case ir_unop_unpack_snorm_2x16
:
1234 emit(nir_op_unpack_snorm_2x16
, dest_size
, srcs
);
1236 case ir_unop_unpack_snorm_4x8
:
1237 emit(nir_op_unpack_snorm_4x8
, dest_size
, srcs
);
1239 case ir_unop_unpack_unorm_2x16
:
1240 emit(nir_op_unpack_unorm_2x16
, dest_size
, srcs
);
1242 case ir_unop_unpack_unorm_4x8
:
1243 emit(nir_op_unpack_unorm_4x8
, dest_size
, srcs
);
1245 case ir_unop_unpack_half_2x16
:
1246 emit(nir_op_unpack_half_2x16
, dest_size
, srcs
);
1248 case ir_unop_unpack_half_2x16_split_x
:
1249 emit(nir_op_unpack_half_2x16_split_x
, dest_size
, srcs
);
1251 case ir_unop_unpack_half_2x16_split_y
:
1252 emit(nir_op_unpack_half_2x16_split_y
, dest_size
, srcs
);
1254 case ir_unop_bitfield_reverse
:
1255 emit(nir_op_bitfield_reverse
, dest_size
, srcs
);
1257 case ir_unop_bit_count
:
1258 emit(nir_op_bit_count
, dest_size
, srcs
);
1260 case ir_unop_find_msb
:
1262 case GLSL_TYPE_UINT
:
1263 emit(nir_op_ufind_msb
, dest_size
, srcs
);
1266 emit(nir_op_ifind_msb
, dest_size
, srcs
);
1269 unreachable("Invalid type for findMSB()");
1272 case ir_unop_find_lsb
:
1273 emit(nir_op_find_lsb
, dest_size
, srcs
);
1277 switch (ir
->type
->vector_elements
) {
1279 switch (ir
->operands
[0]->type
->vector_elements
) {
1280 case 1: emit(nir_op_fnoise1_1
, dest_size
, srcs
); break;
1281 case 2: emit(nir_op_fnoise1_2
, dest_size
, srcs
); break;
1282 case 3: emit(nir_op_fnoise1_3
, dest_size
, srcs
); break;
1283 case 4: emit(nir_op_fnoise1_4
, dest_size
, srcs
); break;
1284 default: unreachable("not reached");
1288 switch (ir
->operands
[0]->type
->vector_elements
) {
1289 case 1: emit(nir_op_fnoise2_1
, dest_size
, srcs
); break;
1290 case 2: emit(nir_op_fnoise2_2
, dest_size
, srcs
); break;
1291 case 3: emit(nir_op_fnoise2_3
, dest_size
, srcs
); break;
1292 case 4: emit(nir_op_fnoise2_4
, dest_size
, srcs
); break;
1293 default: unreachable("not reached");
1297 switch (ir
->operands
[0]->type
->vector_elements
) {
1298 case 1: emit(nir_op_fnoise3_1
, dest_size
, srcs
); break;
1299 case 2: emit(nir_op_fnoise3_2
, dest_size
, srcs
); break;
1300 case 3: emit(nir_op_fnoise3_3
, dest_size
, srcs
); break;
1301 case 4: emit(nir_op_fnoise3_4
, dest_size
, srcs
); break;
1302 default: unreachable("not reached");
1306 switch (ir
->operands
[0]->type
->vector_elements
) {
1307 case 1: emit(nir_op_fnoise4_1
, dest_size
, srcs
); break;
1308 case 2: emit(nir_op_fnoise4_2
, dest_size
, srcs
); break;
1309 case 3: emit(nir_op_fnoise4_3
, dest_size
, srcs
); break;
1310 case 4: emit(nir_op_fnoise4_4
, dest_size
, srcs
); break;
1311 default: unreachable("not reached");
1315 unreachable("not reached");
1326 case ir_binop_bit_and
:
1327 case ir_binop_bit_or
:
1328 case ir_binop_bit_xor
:
1329 case ir_binop_logic_and
:
1330 case ir_binop_logic_or
:
1331 case ir_binop_logic_xor
:
1332 case ir_binop_lshift
:
1333 case ir_binop_rshift
:
1334 switch (ir
->operation
) {
1336 if (out_type
== GLSL_TYPE_FLOAT
)
1342 if (out_type
== GLSL_TYPE_FLOAT
)
1348 if (out_type
== GLSL_TYPE_FLOAT
)
1354 if (out_type
== GLSL_TYPE_FLOAT
)
1356 else if (out_type
== GLSL_TYPE_INT
)
1362 if (out_type
== GLSL_TYPE_FLOAT
)
1368 if (out_type
== GLSL_TYPE_FLOAT
)
1370 else if (out_type
== GLSL_TYPE_INT
)
1376 if (out_type
== GLSL_TYPE_FLOAT
)
1378 else if (out_type
== GLSL_TYPE_INT
)
1383 case ir_binop_bit_and
:
1386 case ir_binop_bit_or
:
1389 case ir_binop_bit_xor
:
1392 case ir_binop_logic_and
:
1398 case ir_binop_logic_or
:
1404 case ir_binop_logic_xor
:
1410 case ir_binop_lshift
:
1413 case ir_binop_rshift
:
1414 if (out_type
== GLSL_TYPE_INT
)
1424 unreachable("not reached");
1427 instr
= emit(op
, dest_size
, srcs
);
1429 if (ir
->operands
[0]->type
->vector_elements
!= 1 &&
1430 ir
->operands
[1]->type
->vector_elements
== 1) {
1431 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
;
1433 instr
->src
[1].swizzle
[i
] = 0;
1437 if (ir
->operands
[1]->type
->vector_elements
!= 1 &&
1438 ir
->operands
[0]->type
->vector_elements
== 1) {
1439 for (unsigned i
= 0; i
< ir
->operands
[1]->type
->vector_elements
;
1441 instr
->src
[0].swizzle
[i
] = 0;
1446 case ir_binop_imul_high
:
1447 emit(out_type
== GLSL_TYPE_UINT
? nir_op_umul_high
: nir_op_imul_high
,
1450 case ir_binop_carry
: emit(nir_op_uadd_carry
, dest_size
, srcs
); break;
1451 case ir_binop_borrow
: emit(nir_op_usub_borrow
, dest_size
, srcs
); break;
1453 if (supports_ints
) {
1454 if (types
[0] == GLSL_TYPE_FLOAT
)
1455 emit(nir_op_flt
, dest_size
, srcs
);
1456 else if (types
[0] == GLSL_TYPE_INT
)
1457 emit(nir_op_ilt
, dest_size
, srcs
);
1459 emit(nir_op_ult
, dest_size
, srcs
);
1461 emit(nir_op_slt
, dest_size
, srcs
);
1464 case ir_binop_greater
:
1465 if (supports_ints
) {
1466 if (types
[0] == GLSL_TYPE_FLOAT
)
1467 emit(nir_op_flt
, dest_size
, srcs
[1], srcs
[0]);
1468 else if (types
[0] == GLSL_TYPE_INT
)
1469 emit(nir_op_ilt
, dest_size
, srcs
[1], srcs
[0]);
1471 emit(nir_op_ult
, dest_size
, srcs
[1], srcs
[0]);
1473 emit(nir_op_slt
, dest_size
, srcs
[1], srcs
[0]);
1476 case ir_binop_lequal
:
1477 if (supports_ints
) {
1478 if (types
[0] == GLSL_TYPE_FLOAT
)
1479 emit(nir_op_fge
, dest_size
, srcs
[1], srcs
[0]);
1480 else if (types
[0] == GLSL_TYPE_INT
)
1481 emit(nir_op_ige
, dest_size
, srcs
[1], srcs
[0]);
1483 emit(nir_op_uge
, dest_size
, srcs
[1], srcs
[0]);
1485 emit(nir_op_slt
, dest_size
, srcs
[1], srcs
[0]);
1488 case ir_binop_gequal
:
1489 if (supports_ints
) {
1490 if (types
[0] == GLSL_TYPE_FLOAT
)
1491 emit(nir_op_fge
, dest_size
, srcs
);
1492 else if (types
[0] == GLSL_TYPE_INT
)
1493 emit(nir_op_ige
, dest_size
, srcs
);
1495 emit(nir_op_uge
, dest_size
, srcs
);
1497 emit(nir_op_slt
, dest_size
, srcs
);
1500 case ir_binop_equal
:
1501 if (supports_ints
) {
1502 if (types
[0] == GLSL_TYPE_FLOAT
)
1503 emit(nir_op_feq
, dest_size
, srcs
);
1505 emit(nir_op_ieq
, dest_size
, srcs
);
1507 emit(nir_op_seq
, dest_size
, srcs
);
1510 case ir_binop_nequal
:
1511 if (supports_ints
) {
1512 if (types
[0] == GLSL_TYPE_FLOAT
)
1513 emit(nir_op_fne
, dest_size
, srcs
);
1515 emit(nir_op_ine
, dest_size
, srcs
);
1517 emit(nir_op_sne
, dest_size
, srcs
);
1520 case ir_binop_all_equal
:
1521 if (supports_ints
) {
1522 if (types
[0] == GLSL_TYPE_FLOAT
) {
1523 switch (ir
->operands
[0]->type
->vector_elements
) {
1524 case 1: emit(nir_op_feq
, dest_size
, srcs
); break;
1525 case 2: emit(nir_op_ball_fequal2
, dest_size
, srcs
); break;
1526 case 3: emit(nir_op_ball_fequal3
, dest_size
, srcs
); break;
1527 case 4: emit(nir_op_ball_fequal4
, dest_size
, srcs
); break;
1529 unreachable("not reached");
1532 switch (ir
->operands
[0]->type
->vector_elements
) {
1533 case 1: emit(nir_op_ieq
, dest_size
, srcs
); break;
1534 case 2: emit(nir_op_ball_iequal2
, dest_size
, srcs
); break;
1535 case 3: emit(nir_op_ball_iequal3
, dest_size
, srcs
); break;
1536 case 4: emit(nir_op_ball_iequal4
, dest_size
, srcs
); break;
1538 unreachable("not reached");
1542 switch (ir
->operands
[0]->type
->vector_elements
) {
1543 case 1: emit(nir_op_seq
, dest_size
, srcs
); break;
1544 case 2: emit(nir_op_fall_equal2
, dest_size
, srcs
); break;
1545 case 3: emit(nir_op_fall_equal3
, dest_size
, srcs
); break;
1546 case 4: emit(nir_op_fall_equal4
, dest_size
, srcs
); break;
1548 unreachable("not reached");
1552 case ir_binop_any_nequal
:
1553 if (supports_ints
) {
1554 if (types
[0] == GLSL_TYPE_FLOAT
) {
1555 switch (ir
->operands
[0]->type
->vector_elements
) {
1556 case 1: emit(nir_op_fne
, dest_size
, srcs
); break;
1557 case 2: emit(nir_op_bany_fnequal2
, dest_size
, srcs
); break;
1558 case 3: emit(nir_op_bany_fnequal3
, dest_size
, srcs
); break;
1559 case 4: emit(nir_op_bany_fnequal4
, dest_size
, srcs
); break;
1561 unreachable("not reached");
1564 switch (ir
->operands
[0]->type
->vector_elements
) {
1565 case 1: emit(nir_op_ine
, dest_size
, srcs
); break;
1566 case 2: emit(nir_op_bany_inequal2
, dest_size
, srcs
); break;
1567 case 3: emit(nir_op_bany_inequal3
, dest_size
, srcs
); break;
1568 case 4: emit(nir_op_bany_inequal4
, dest_size
, srcs
); break;
1570 unreachable("not reached");
1574 switch (ir
->operands
[0]->type
->vector_elements
) {
1575 case 1: emit(nir_op_sne
, dest_size
, srcs
); break;
1576 case 2: emit(nir_op_fany_nequal2
, dest_size
, srcs
); break;
1577 case 3: emit(nir_op_fany_nequal3
, dest_size
, srcs
); break;
1578 case 4: emit(nir_op_fany_nequal4
, dest_size
, srcs
); break;
1580 unreachable("not reached");
1585 switch (ir
->operands
[0]->type
->vector_elements
) {
1586 case 2: emit(nir_op_fdot2
, dest_size
, srcs
); break;
1587 case 3: emit(nir_op_fdot3
, dest_size
, srcs
); break;
1588 case 4: emit(nir_op_fdot4
, dest_size
, srcs
); break;
1590 unreachable("not reached");
1594 case ir_binop_pack_half_2x16_split
:
1595 emit(nir_op_pack_half_2x16_split
, dest_size
, srcs
);
1597 case ir_binop_bfm
: emit(nir_op_bfm
, dest_size
, srcs
); break;
1598 case ir_binop_ldexp
: emit(nir_op_ldexp
, dest_size
, srcs
); break;
1599 case ir_triop_fma
: emit(nir_op_ffma
, dest_size
, srcs
); break;
1601 instr
= emit(nir_op_flrp
, dest_size
, srcs
);
1602 if (ir
->operands
[0]->type
->vector_elements
!= 1 &&
1603 ir
->operands
[2]->type
->vector_elements
== 1) {
1604 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
;
1606 instr
->src
[2].swizzle
[i
] = 0;
1612 emit(nir_op_bcsel
, dest_size
, srcs
);
1614 emit(nir_op_fcsel
, dest_size
, srcs
);
1617 instr
= emit(nir_op_bfi
, dest_size
, srcs
);
1618 for (unsigned i
= 0; i
< ir
->operands
[1]->type
->vector_elements
; i
++) {
1619 instr
->src
[0].swizzle
[i
] = 0;
1622 case ir_triop_bitfield_extract
:
1623 instr
= emit(out_type
== GLSL_TYPE_INT
? nir_op_ibitfield_extract
:
1624 nir_op_ubitfield_extract
, dest_size
, srcs
);
1625 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1626 instr
->src
[1].swizzle
[i
] = 0;
1627 instr
->src
[2].swizzle
[i
] = 0;
1630 case ir_quadop_bitfield_insert
:
1631 instr
= emit(nir_op_bitfield_insert
, dest_size
, srcs
);
1632 for (unsigned i
= 0; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
1633 instr
->src
[2].swizzle
[i
] = 0;
1634 instr
->src
[3].swizzle
[i
] = 0;
1637 case ir_quadop_vector
:
1638 switch (ir
->type
->vector_elements
) {
1639 case 2: emit(nir_op_vec2
, dest_size
, srcs
); break;
1640 case 3: emit(nir_op_vec3
, dest_size
, srcs
); break;
1641 case 4: emit(nir_op_vec4
, dest_size
, srcs
); break;
1642 default: unreachable("not reached");
1647 unreachable("not reached");
1652 nir_visitor::visit(ir_swizzle
*ir
)
1654 nir_alu_instr
*instr
= emit(supports_ints
? nir_op_imov
: nir_op_fmov
,
1655 ir
->type
->vector_elements
,
1656 evaluate_rvalue(ir
->val
));
1658 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
1659 for (unsigned i
= 0; i
< ir
->type
->vector_elements
; i
++)
1660 instr
->src
[0].swizzle
[i
] = swizzle
[i
];
1664 nir_visitor::visit(ir_texture
*ir
)
1671 num_srcs
= 1; /* coordinate */
1676 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
1677 num_srcs
= 2; /* coordinate, bias/lod */
1681 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
1687 if (ir
->lod_info
.lod
!= NULL
)
1688 num_srcs
= 2; /* coordinate, lod */
1690 num_srcs
= 1; /* coordinate */
1694 op
= nir_texop_txf_ms
;
1695 num_srcs
= 2; /* coordinate, sample_index */
1700 if (ir
->lod_info
.lod
!= NULL
)
1701 num_srcs
= 1; /* lod */
1708 num_srcs
= 1; /* coordinate */
1713 num_srcs
= 1; /* coordinate */
1716 case ir_query_levels
:
1717 op
= nir_texop_query_levels
;
1722 unreachable("not reached");
1725 if (ir
->projector
!= NULL
)
1727 if (ir
->shadow_comparitor
!= NULL
)
1729 if (ir
->offset
!= NULL
&& ir
->offset
->as_constant() == NULL
)
1732 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
1735 instr
->sampler_dim
=
1736 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
1737 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
1738 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
1739 if (instr
->is_shadow
)
1740 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
1741 switch (ir
->type
->base_type
) {
1742 case GLSL_TYPE_FLOAT
:
1743 instr
->dest_type
= nir_type_float
;
1746 instr
->dest_type
= nir_type_int
;
1748 case GLSL_TYPE_UINT
:
1749 instr
->dest_type
= nir_type_unsigned
;
1752 unreachable("not reached");
1755 instr
->sampler
= evaluate_deref(&instr
->instr
, ir
->sampler
);
1757 unsigned src_number
= 0;
1759 if (ir
->coordinate
!= NULL
) {
1760 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
1761 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->coordinate
);
1762 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
1766 if (ir
->projector
!= NULL
) {
1767 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->projector
);
1768 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
1772 if (ir
->shadow_comparitor
!= NULL
) {
1773 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->shadow_comparitor
);
1774 instr
->src
[src_number
].src_type
= nir_tex_src_comparitor
;
1778 if (ir
->offset
!= NULL
) {
1779 /* we don't support multiple offsets yet */
1780 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
1782 ir_constant
*const_offset
= ir
->offset
->as_constant();
1783 if (const_offset
!= NULL
) {
1784 for (unsigned i
= 0; i
< const_offset
->type
->vector_elements
; i
++)
1785 instr
->const_offset
[i
] = const_offset
->value
.i
[i
];
1787 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->offset
);
1788 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
1795 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.bias
);
1796 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
1803 if (ir
->lod_info
.lod
!= NULL
) {
1804 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.lod
);
1805 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
1811 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.grad
.dPdx
);
1812 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
1814 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.grad
.dPdy
);
1815 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
1820 instr
->src
[src_number
].src
= evaluate_rvalue(ir
->lod_info
.sample_index
);
1821 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
1826 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
1833 assert(src_number
== num_srcs
);
1835 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
));
1839 nir_visitor::visit(ir_constant
*ir
)
1842 * We don't know if this variable is an an array or struct that gets
1843 * dereferenced, so do the safe thing an make it a variable with a
1844 * constant initializer and return a dereference.
1847 nir_variable
*var
= ralloc(this->shader
, nir_variable
);
1848 var
->name
= ralloc_strdup(var
, "const_temp");
1849 var
->type
= ir
->type
;
1850 var
->data
.mode
= nir_var_local
;
1851 var
->data
.read_only
= true;
1852 var
->constant_initializer
= constant_copy(ir
, var
);
1853 exec_list_push_tail(&this->impl
->locals
, &var
->node
);
1855 this->deref_head
= nir_deref_var_create(this->shader
, var
);
1856 this->deref_tail
= &this->deref_head
->deref
;
1860 nir_visitor::visit(ir_dereference_variable
*ir
)
1862 struct hash_entry
*entry
=
1863 _mesa_hash_table_search(this->var_table
, ir
->var
);
1865 nir_variable
*var
= (nir_variable
*) entry
->data
;
1867 nir_deref_var
*deref
= nir_deref_var_create(this->shader
, var
);
1868 this->deref_head
= deref
;
1869 this->deref_tail
= &deref
->deref
;
1873 nir_visitor::visit(ir_dereference_record
*ir
)
1875 ir
->record
->accept(this);
1877 int field_index
= this->deref_tail
->type
->field_index(ir
->field
);
1878 assert(field_index
>= 0);
1880 nir_deref_struct
*deref
= nir_deref_struct_create(this->deref_tail
, field_index
);
1881 deref
->deref
.type
= ir
->type
;
1882 this->deref_tail
->child
= &deref
->deref
;
1883 this->deref_tail
= &deref
->deref
;
1887 nir_visitor::visit(ir_dereference_array
*ir
)
1889 nir_deref_array
*deref
= nir_deref_array_create(this->shader
);
1890 deref
->deref
.type
= ir
->type
;
1892 ir_constant
*const_index
= ir
->array_index
->as_constant();
1893 if (const_index
!= NULL
) {
1894 deref
->deref_array_type
= nir_deref_array_type_direct
;
1895 deref
->base_offset
= const_index
->value
.u
[0];
1897 deref
->deref_array_type
= nir_deref_array_type_indirect
;
1898 deref
->indirect
= evaluate_rvalue(ir
->array_index
);
1901 ir
->array
->accept(this);
1903 this->deref_tail
->child
= &deref
->deref
;
1904 ralloc_steal(this->deref_tail
, deref
);
1905 this->deref_tail
= &deref
->deref
;
1909 nir_visitor::visit(ir_barrier
*ir
)
1911 nir_intrinsic_instr
*instr
=
1912 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
1913 nir_instr_insert_after_cf_list(this->cf_node_list
, &instr
->instr
);