2 * Copyright © 2010 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
21 * DEALINGS IN THE SOFTWARE.
24 #include "main/core.h" /* for MAX2 */
26 #include "compiler/glsl_types.h"
27 #include "glsl_parser_extras.h"
30 ir_rvalue::ir_rvalue(enum ir_node_type t
)
33 this->type
= glsl_type::error_type
;
36 bool ir_rvalue::is_zero() const
41 bool ir_rvalue::is_one() const
46 bool ir_rvalue::is_negative_one() const
52 * Modify the swizzle make to move one component to another
54 * \param m IR swizzle to be modified
55 * \param from Component in the RHS that is to be swizzled
56 * \param to Desired swizzle location of \c from
59 update_rhs_swizzle(ir_swizzle_mask
&m
, unsigned from
, unsigned to
)
62 case 0: m
.x
= from
; break;
63 case 1: m
.y
= from
; break;
64 case 2: m
.z
= from
; break;
65 case 3: m
.w
= from
; break;
66 default: assert(!"Should not get here.");
71 ir_assignment::set_lhs(ir_rvalue
*lhs
)
74 bool swizzled
= false;
77 ir_swizzle
*swiz
= lhs
->as_swizzle();
82 unsigned write_mask
= 0;
83 ir_swizzle_mask rhs_swiz
= { 0, 0, 0, 0, 0, 0 };
85 for (unsigned i
= 0; i
< swiz
->mask
.num_components
; i
++) {
89 case 0: c
= swiz
->mask
.x
; break;
90 case 1: c
= swiz
->mask
.y
; break;
91 case 2: c
= swiz
->mask
.z
; break;
92 case 3: c
= swiz
->mask
.w
; break;
93 default: assert(!"Should not get here.");
96 write_mask
|= (((this->write_mask
>> i
) & 1) << c
);
97 update_rhs_swizzle(rhs_swiz
, i
, c
);
98 rhs_swiz
.num_components
= swiz
->val
->type
->vector_elements
;
101 this->write_mask
= write_mask
;
104 this->rhs
= new(mem_ctx
) ir_swizzle(this->rhs
, rhs_swiz
);
109 /* Now, RHS channels line up with the LHS writemask. Collapse it
110 * to just the channels that will be written.
112 ir_swizzle_mask rhs_swiz
= { 0, 0, 0, 0, 0, 0 };
114 for (int i
= 0; i
< 4; i
++) {
115 if (write_mask
& (1 << i
))
116 update_rhs_swizzle(rhs_swiz
, i
, rhs_chan
++);
118 rhs_swiz
.num_components
= rhs_chan
;
119 this->rhs
= new(mem_ctx
) ir_swizzle(this->rhs
, rhs_swiz
);
122 assert((lhs
== NULL
) || lhs
->as_dereference());
124 this->lhs
= (ir_dereference
*) lhs
;
128 ir_assignment::whole_variable_written()
130 ir_variable
*v
= this->lhs
->whole_variable_referenced();
135 if (v
->type
->is_scalar())
138 if (v
->type
->is_vector()) {
139 const unsigned mask
= (1U << v
->type
->vector_elements
) - 1;
141 if (mask
!= this->write_mask
)
145 /* Either all the vector components are assigned or the variable is some
146 * composite type (and the whole thing is assigned.
151 ir_assignment::ir_assignment(ir_dereference
*lhs
, ir_rvalue
*rhs
,
152 ir_rvalue
*condition
, unsigned write_mask
)
153 : ir_instruction(ir_type_assignment
)
155 this->condition
= condition
;
158 this->write_mask
= write_mask
;
160 if (lhs
->type
->is_scalar() || lhs
->type
->is_vector()) {
161 int lhs_components
= 0;
162 for (int i
= 0; i
< 4; i
++) {
163 if (write_mask
& (1 << i
))
167 assert(lhs_components
== this->rhs
->type
->vector_elements
);
171 ir_assignment::ir_assignment(ir_rvalue
*lhs
, ir_rvalue
*rhs
,
172 ir_rvalue
*condition
)
173 : ir_instruction(ir_type_assignment
)
175 this->condition
= condition
;
178 /* If the RHS is a vector type, assume that all components of the vector
179 * type are being written to the LHS. The write mask comes from the RHS
180 * because we can have a case where the LHS is a vec4 and the RHS is a
181 * vec3. In that case, the assignment is:
183 * (assign (...) (xyz) (var_ref lhs) (var_ref rhs))
185 if (rhs
->type
->is_vector())
186 this->write_mask
= (1U << rhs
->type
->vector_elements
) - 1;
187 else if (rhs
->type
->is_scalar())
188 this->write_mask
= 1;
190 this->write_mask
= 0;
195 ir_expression::ir_expression(int op
, const struct glsl_type
*type
,
196 ir_rvalue
*op0
, ir_rvalue
*op1
,
197 ir_rvalue
*op2
, ir_rvalue
*op3
)
198 : ir_rvalue(ir_type_expression
)
201 this->operation
= ir_expression_operation(op
);
202 this->operands
[0] = op0
;
203 this->operands
[1] = op1
;
204 this->operands
[2] = op2
;
205 this->operands
[3] = op3
;
207 int num_operands
= get_num_operands(this->operation
);
208 for (int i
= num_operands
; i
< 4; i
++) {
209 assert(this->operands
[i
] == NULL
);
214 ir_expression::ir_expression(int op
, ir_rvalue
*op0
)
215 : ir_rvalue(ir_type_expression
)
217 this->operation
= ir_expression_operation(op
);
218 this->operands
[0] = op0
;
219 this->operands
[1] = NULL
;
220 this->operands
[2] = NULL
;
221 this->operands
[3] = NULL
;
223 assert(op
<= ir_last_unop
);
225 switch (this->operation
) {
226 case ir_unop_bit_not
:
227 case ir_unop_logic_not
:
242 case ir_unop_round_even
:
246 case ir_unop_dFdx_coarse
:
247 case ir_unop_dFdx_fine
:
249 case ir_unop_dFdy_coarse
:
250 case ir_unop_dFdy_fine
:
251 case ir_unop_bitfield_reverse
:
252 case ir_unop_interpolate_at_centroid
:
253 case ir_unop_saturate
:
254 this->type
= op0
->type
;
261 case ir_unop_bitcast_f2i
:
262 case ir_unop_bit_count
:
263 case ir_unop_find_msb
:
264 case ir_unop_find_lsb
:
265 case ir_unop_subroutine_to_int
:
268 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
,
269 op0
->type
->vector_elements
, 1);
276 case ir_unop_bitcast_i2f
:
277 case ir_unop_bitcast_u2f
:
280 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
,
281 op0
->type
->vector_elements
, 1);
288 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
,
289 op0
->type
->vector_elements
, 1);
297 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
,
298 op0
->type
->vector_elements
, 1);
304 case ir_unop_bitcast_f2u
:
307 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT
,
308 op0
->type
->vector_elements
, 1);
316 case ir_unop_u642i64
:
317 this->type
= glsl_type::get_instance(GLSL_TYPE_INT64
,
318 op0
->type
->vector_elements
, 1);
325 case ir_unop_i642u64
:
326 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT64
,
327 op0
->type
->vector_elements
, 1);
330 this->type
= glsl_type::float_type
;
333 case ir_unop_unpack_double_2x32
:
334 case ir_unop_unpack_uint_2x32
:
335 this->type
= glsl_type::uvec2_type
;
338 case ir_unop_unpack_int_2x32
:
339 this->type
= glsl_type::ivec2_type
;
342 case ir_unop_pack_snorm_2x16
:
343 case ir_unop_pack_snorm_4x8
:
344 case ir_unop_pack_unorm_2x16
:
345 case ir_unop_pack_unorm_4x8
:
346 case ir_unop_pack_half_2x16
:
347 this->type
= glsl_type::uint_type
;
350 case ir_unop_pack_double_2x32
:
351 this->type
= glsl_type::double_type
;
354 case ir_unop_pack_int_2x32
:
355 this->type
= glsl_type::int64_t_type
;
358 case ir_unop_pack_uint_2x32
:
359 this->type
= glsl_type::uint64_t_type
;
362 case ir_unop_unpack_snorm_2x16
:
363 case ir_unop_unpack_unorm_2x16
:
364 case ir_unop_unpack_half_2x16
:
365 this->type
= glsl_type::vec2_type
;
368 case ir_unop_unpack_snorm_4x8
:
369 case ir_unop_unpack_unorm_4x8
:
370 this->type
= glsl_type::vec4_type
;
373 case ir_unop_frexp_sig
:
374 this->type
= op0
->type
;
376 case ir_unop_frexp_exp
:
377 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
,
378 op0
->type
->vector_elements
, 1);
381 case ir_unop_get_buffer_size
:
382 case ir_unop_ssbo_unsized_array_length
:
383 this->type
= glsl_type::int_type
;
386 case ir_unop_bitcast_i642d
:
387 case ir_unop_bitcast_u642d
:
388 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
,
389 op0
->type
->vector_elements
, 1);
392 case ir_unop_bitcast_d2i64
:
393 this->type
= glsl_type::get_instance(GLSL_TYPE_INT64
,
394 op0
->type
->vector_elements
, 1);
396 case ir_unop_bitcast_d2u64
:
397 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT64
,
398 op0
->type
->vector_elements
, 1);
402 assert(!"not reached: missing automatic type setup for ir_expression");
403 this->type
= op0
->type
;
408 ir_expression::ir_expression(int op
, ir_rvalue
*op0
, ir_rvalue
*op1
)
409 : ir_rvalue(ir_type_expression
)
411 this->operation
= ir_expression_operation(op
);
412 this->operands
[0] = op0
;
413 this->operands
[1] = op1
;
414 this->operands
[2] = NULL
;
415 this->operands
[3] = NULL
;
417 assert(op
> ir_last_unop
);
419 switch (this->operation
) {
420 case ir_binop_all_equal
:
421 case ir_binop_any_nequal
:
422 this->type
= glsl_type::bool_type
;
433 if (op0
->type
->is_scalar()) {
434 this->type
= op1
->type
;
435 } else if (op1
->type
->is_scalar()) {
436 this->type
= op0
->type
;
438 if (this->operation
== ir_binop_mul
) {
439 this->type
= glsl_type::get_mul_type(op0
->type
, op1
->type
);
441 assert(op0
->type
== op1
->type
);
442 this->type
= op0
->type
;
447 case ir_binop_logic_and
:
448 case ir_binop_logic_xor
:
449 case ir_binop_logic_or
:
450 case ir_binop_bit_and
:
451 case ir_binop_bit_xor
:
452 case ir_binop_bit_or
:
453 assert(!op0
->type
->is_matrix());
454 assert(!op1
->type
->is_matrix());
455 if (op0
->type
->is_scalar()) {
456 this->type
= op1
->type
;
457 } else if (op1
->type
->is_scalar()) {
458 this->type
= op0
->type
;
460 assert(op0
->type
->vector_elements
== op1
->type
->vector_elements
);
461 this->type
= op0
->type
;
466 case ir_binop_nequal
:
467 case ir_binop_lequal
:
468 case ir_binop_gequal
:
470 case ir_binop_greater
:
471 assert(op0
->type
== op1
->type
);
472 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
,
473 op0
->type
->vector_elements
, 1);
477 this->type
= op0
->type
->get_base_type();
480 case ir_binop_imul_high
:
482 case ir_binop_borrow
:
483 case ir_binop_lshift
:
484 case ir_binop_rshift
:
486 case ir_binop_interpolate_at_offset
:
487 case ir_binop_interpolate_at_sample
:
488 this->type
= op0
->type
;
491 case ir_binop_vector_extract
:
492 this->type
= op0
->type
->get_scalar_type();
496 assert(!"not reached: missing automatic type setup for ir_expression");
497 this->type
= glsl_type::float_type
;
501 ir_expression::ir_expression(int op
, ir_rvalue
*op0
, ir_rvalue
*op1
,
503 : ir_rvalue(ir_type_expression
)
505 this->operation
= ir_expression_operation(op
);
506 this->operands
[0] = op0
;
507 this->operands
[1] = op1
;
508 this->operands
[2] = op2
;
509 this->operands
[3] = NULL
;
511 assert(op
> ir_last_binop
&& op
<= ir_last_triop
);
513 switch (this->operation
) {
516 case ir_triop_bitfield_extract
:
517 case ir_triop_vector_insert
:
518 this->type
= op0
->type
;
522 this->type
= op1
->type
;
526 assert(!"not reached: missing automatic type setup for ir_expression");
527 this->type
= glsl_type::float_type
;
532 ir_expression::get_num_operands(ir_expression_operation op
)
534 assert(op
<= ir_last_opcode
);
536 if (op
<= ir_last_unop
)
539 if (op
<= ir_last_binop
)
542 if (op
<= ir_last_triop
)
545 if (op
<= ir_last_quadop
)
552 #include "ir_expression_operation_strings.h"
555 depth_layout_string(ir_depth_layout layout
)
558 case ir_depth_layout_none
: return "";
559 case ir_depth_layout_any
: return "depth_any";
560 case ir_depth_layout_greater
: return "depth_greater";
561 case ir_depth_layout_less
: return "depth_less";
562 case ir_depth_layout_unchanged
: return "depth_unchanged";
570 ir_expression_operation
571 ir_expression::get_operator(const char *str
)
573 for (int op
= 0; op
<= int(ir_last_opcode
); op
++) {
574 if (strcmp(str
, ir_expression_operation_strings
[op
]) == 0)
575 return (ir_expression_operation
) op
;
577 return (ir_expression_operation
) -1;
581 ir_expression::variable_referenced() const
584 case ir_binop_vector_extract
:
585 case ir_triop_vector_insert
:
586 /* We get these for things like a[0] where a is a vector type. In these
587 * cases we want variable_referenced() to return the actual vector
588 * variable this is wrapping.
590 return operands
[0]->variable_referenced();
592 return ir_rvalue::variable_referenced();
596 ir_constant::ir_constant()
597 : ir_rvalue(ir_type_constant
)
599 this->array_elements
= NULL
;
602 ir_constant::ir_constant(const struct glsl_type
*type
,
603 const ir_constant_data
*data
)
604 : ir_rvalue(ir_type_constant
)
606 this->array_elements
= NULL
;
608 assert((type
->base_type
>= GLSL_TYPE_UINT
)
609 && (type
->base_type
<= GLSL_TYPE_BOOL
));
612 memcpy(& this->value
, data
, sizeof(this->value
));
615 ir_constant::ir_constant(float f
, unsigned vector_elements
)
616 : ir_rvalue(ir_type_constant
)
618 assert(vector_elements
<= 4);
619 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
, vector_elements
, 1);
620 for (unsigned i
= 0; i
< vector_elements
; i
++) {
621 this->value
.f
[i
] = f
;
623 for (unsigned i
= vector_elements
; i
< 16; i
++) {
624 this->value
.f
[i
] = 0;
628 ir_constant::ir_constant(double d
, unsigned vector_elements
)
629 : ir_rvalue(ir_type_constant
)
631 assert(vector_elements
<= 4);
632 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
, vector_elements
, 1);
633 for (unsigned i
= 0; i
< vector_elements
; i
++) {
634 this->value
.d
[i
] = d
;
636 for (unsigned i
= vector_elements
; i
< 16; i
++) {
637 this->value
.d
[i
] = 0.0;
641 ir_constant::ir_constant(unsigned int u
, unsigned vector_elements
)
642 : ir_rvalue(ir_type_constant
)
644 assert(vector_elements
<= 4);
645 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT
, vector_elements
, 1);
646 for (unsigned i
= 0; i
< vector_elements
; i
++) {
647 this->value
.u
[i
] = u
;
649 for (unsigned i
= vector_elements
; i
< 16; i
++) {
650 this->value
.u
[i
] = 0;
654 ir_constant::ir_constant(int integer
, unsigned vector_elements
)
655 : ir_rvalue(ir_type_constant
)
657 assert(vector_elements
<= 4);
658 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
, vector_elements
, 1);
659 for (unsigned i
= 0; i
< vector_elements
; i
++) {
660 this->value
.i
[i
] = integer
;
662 for (unsigned i
= vector_elements
; i
< 16; i
++) {
663 this->value
.i
[i
] = 0;
667 ir_constant::ir_constant(uint64_t u64
, unsigned vector_elements
)
668 : ir_rvalue(ir_type_constant
)
670 assert(vector_elements
<= 4);
671 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT64
, vector_elements
, 1);
672 for (unsigned i
= 0; i
< vector_elements
; i
++) {
673 this->value
.u64
[i
] = u64
;
675 for (unsigned i
= vector_elements
; i
< 16; i
++) {
676 this->value
.u64
[i
] = 0;
680 ir_constant::ir_constant(int64_t int64
, unsigned vector_elements
)
681 : ir_rvalue(ir_type_constant
)
683 assert(vector_elements
<= 4);
684 this->type
= glsl_type::get_instance(GLSL_TYPE_INT64
, vector_elements
, 1);
685 for (unsigned i
= 0; i
< vector_elements
; i
++) {
686 this->value
.i64
[i
] = int64
;
688 for (unsigned i
= vector_elements
; i
< 16; i
++) {
689 this->value
.i64
[i
] = 0;
693 ir_constant::ir_constant(bool b
, unsigned vector_elements
)
694 : ir_rvalue(ir_type_constant
)
696 assert(vector_elements
<= 4);
697 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
, vector_elements
, 1);
698 for (unsigned i
= 0; i
< vector_elements
; i
++) {
699 this->value
.b
[i
] = b
;
701 for (unsigned i
= vector_elements
; i
< 16; i
++) {
702 this->value
.b
[i
] = false;
706 ir_constant::ir_constant(const ir_constant
*c
, unsigned i
)
707 : ir_rvalue(ir_type_constant
)
709 this->array_elements
= NULL
;
710 this->type
= c
->type
->get_base_type();
712 switch (this->type
->base_type
) {
713 case GLSL_TYPE_UINT
: this->value
.u
[0] = c
->value
.u
[i
]; break;
714 case GLSL_TYPE_INT
: this->value
.i
[0] = c
->value
.i
[i
]; break;
715 case GLSL_TYPE_FLOAT
: this->value
.f
[0] = c
->value
.f
[i
]; break;
716 case GLSL_TYPE_BOOL
: this->value
.b
[0] = c
->value
.b
[i
]; break;
717 case GLSL_TYPE_DOUBLE
: this->value
.d
[0] = c
->value
.d
[i
]; break;
718 default: assert(!"Should not get here."); break;
722 ir_constant::ir_constant(const struct glsl_type
*type
, exec_list
*value_list
)
723 : ir_rvalue(ir_type_constant
)
725 this->array_elements
= NULL
;
728 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
729 || type
->is_record() || type
->is_array());
731 if (type
->is_array()) {
732 this->array_elements
= ralloc_array(this, ir_constant
*, type
->length
);
734 foreach_in_list(ir_constant
, value
, value_list
) {
735 assert(value
->as_constant() != NULL
);
737 this->array_elements
[i
++] = value
;
742 /* If the constant is a record, the types of each of the entries in
743 * value_list must be a 1-for-1 match with the structure components. Each
744 * entry must also be a constant. Just move the nodes from the value_list
745 * to the list in the ir_constant.
747 /* FINISHME: Should there be some type checking and / or assertions here? */
748 /* FINISHME: Should the new constant take ownership of the nodes from
749 * FINISHME: value_list, or should it make copies?
751 if (type
->is_record()) {
752 value_list
->move_nodes_to(& this->components
);
756 for (unsigned i
= 0; i
< 16; i
++) {
757 this->value
.u
[i
] = 0;
760 ir_constant
*value
= (ir_constant
*) (value_list
->get_head_raw());
762 /* Constructors with exactly one scalar argument are special for vectors
763 * and matrices. For vectors, the scalar value is replicated to fill all
764 * the components. For matrices, the scalar fills the components of the
765 * diagonal while the rest is filled with 0.
767 if (value
->type
->is_scalar() && value
->next
->is_tail_sentinel()) {
768 if (type
->is_matrix()) {
769 /* Matrix - fill diagonal (rest is already set to 0) */
770 assert(type
->is_float() || type
->is_double());
771 for (unsigned i
= 0; i
< type
->matrix_columns
; i
++) {
772 if (type
->is_float())
773 this->value
.f
[i
* type
->vector_elements
+ i
] =
776 this->value
.d
[i
* type
->vector_elements
+ i
] =
780 /* Vector or scalar - fill all components */
781 switch (type
->base_type
) {
784 for (unsigned i
= 0; i
< type
->components(); i
++)
785 this->value
.u
[i
] = value
->value
.u
[0];
787 case GLSL_TYPE_FLOAT
:
788 for (unsigned i
= 0; i
< type
->components(); i
++)
789 this->value
.f
[i
] = value
->value
.f
[0];
791 case GLSL_TYPE_DOUBLE
:
792 for (unsigned i
= 0; i
< type
->components(); i
++)
793 this->value
.d
[i
] = value
->value
.d
[0];
795 case GLSL_TYPE_UINT64
:
796 case GLSL_TYPE_INT64
:
797 for (unsigned i
= 0; i
< type
->components(); i
++)
798 this->value
.u64
[i
] = value
->value
.u64
[0];
801 for (unsigned i
= 0; i
< type
->components(); i
++)
802 this->value
.b
[i
] = value
->value
.b
[0];
805 assert(!"Should not get here.");
812 if (type
->is_matrix() && value
->type
->is_matrix()) {
813 assert(value
->next
->is_tail_sentinel());
815 /* From section 5.4.2 of the GLSL 1.20 spec:
816 * "If a matrix is constructed from a matrix, then each component
817 * (column i, row j) in the result that has a corresponding component
818 * (column i, row j) in the argument will be initialized from there."
820 unsigned cols
= MIN2(type
->matrix_columns
, value
->type
->matrix_columns
);
821 unsigned rows
= MIN2(type
->vector_elements
, value
->type
->vector_elements
);
822 for (unsigned i
= 0; i
< cols
; i
++) {
823 for (unsigned j
= 0; j
< rows
; j
++) {
824 const unsigned src
= i
* value
->type
->vector_elements
+ j
;
825 const unsigned dst
= i
* type
->vector_elements
+ j
;
826 this->value
.f
[dst
] = value
->value
.f
[src
];
830 /* "All other components will be initialized to the identity matrix." */
831 for (unsigned i
= cols
; i
< type
->matrix_columns
; i
++)
832 this->value
.f
[i
* type
->vector_elements
+ i
] = 1.0;
837 /* Use each component from each entry in the value_list to initialize one
838 * component of the constant being constructed.
842 assert(value
->as_constant() != NULL
);
843 assert(!value
->is_tail_sentinel());
845 for (unsigned j
= 0; j
< value
->type
->components(); j
++) {
846 switch (type
->base_type
) {
848 this->value
.u
[i
] = value
->get_uint_component(j
);
851 this->value
.i
[i
] = value
->get_int_component(j
);
853 case GLSL_TYPE_FLOAT
:
854 this->value
.f
[i
] = value
->get_float_component(j
);
857 this->value
.b
[i
] = value
->get_bool_component(j
);
859 case GLSL_TYPE_DOUBLE
:
860 this->value
.d
[i
] = value
->get_double_component(j
);
862 case GLSL_TYPE_UINT64
:
863 this->value
.u64
[i
] = value
->get_uint64_component(j
);
865 case GLSL_TYPE_INT64
:
866 this->value
.i64
[i
] = value
->get_int64_component(j
);
869 /* FINISHME: What to do? Exceptions are not the answer.
875 if (i
>= type
->components())
879 if (i
>= type
->components())
880 break; /* avoid downcasting a list sentinel */
881 value
= (ir_constant
*) value
->next
;
886 ir_constant::zero(void *mem_ctx
, const glsl_type
*type
)
888 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
889 || type
->is_record() || type
->is_array());
891 ir_constant
*c
= new(mem_ctx
) ir_constant
;
893 memset(&c
->value
, 0, sizeof(c
->value
));
895 if (type
->is_array()) {
896 c
->array_elements
= ralloc_array(c
, ir_constant
*, type
->length
);
898 for (unsigned i
= 0; i
< type
->length
; i
++)
899 c
->array_elements
[i
] = ir_constant::zero(c
, type
->fields
.array
);
902 if (type
->is_record()) {
903 for (unsigned i
= 0; i
< type
->length
; i
++) {
904 ir_constant
*comp
= ir_constant::zero(mem_ctx
, type
->fields
.structure
[i
].type
);
905 c
->components
.push_tail(comp
);
913 ir_constant::get_bool_component(unsigned i
) const
915 switch (this->type
->base_type
) {
916 case GLSL_TYPE_UINT
: return this->value
.u
[i
] != 0;
917 case GLSL_TYPE_INT
: return this->value
.i
[i
] != 0;
918 case GLSL_TYPE_FLOAT
: return ((int)this->value
.f
[i
]) != 0;
919 case GLSL_TYPE_BOOL
: return this->value
.b
[i
];
920 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
] != 0.0;
921 case GLSL_TYPE_UINT64
: return this->value
.u64
[i
] != 0;
922 case GLSL_TYPE_INT64
: return this->value
.i64
[i
] != 0;
923 default: assert(!"Should not get here."); break;
926 /* Must return something to make the compiler happy. This is clearly an
933 ir_constant::get_float_component(unsigned i
) const
935 switch (this->type
->base_type
) {
936 case GLSL_TYPE_UINT
: return (float) this->value
.u
[i
];
937 case GLSL_TYPE_INT
: return (float) this->value
.i
[i
];
938 case GLSL_TYPE_FLOAT
: return this->value
.f
[i
];
939 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0f
: 0.0f
;
940 case GLSL_TYPE_DOUBLE
: return (float) this->value
.d
[i
];
941 case GLSL_TYPE_UINT64
: return (float) this->value
.u64
[i
];
942 case GLSL_TYPE_INT64
: return (float) this->value
.i64
[i
];
943 default: assert(!"Should not get here."); break;
946 /* Must return something to make the compiler happy. This is clearly an
953 ir_constant::get_double_component(unsigned i
) const
955 switch (this->type
->base_type
) {
956 case GLSL_TYPE_UINT
: return (double) this->value
.u
[i
];
957 case GLSL_TYPE_INT
: return (double) this->value
.i
[i
];
958 case GLSL_TYPE_FLOAT
: return (double) this->value
.f
[i
];
959 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0 : 0.0;
960 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
];
961 case GLSL_TYPE_UINT64
: return (double) this->value
.u64
[i
];
962 case GLSL_TYPE_INT64
: return (double) this->value
.i64
[i
];
963 default: assert(!"Should not get here."); break;
966 /* Must return something to make the compiler happy. This is clearly an
973 ir_constant::get_int_component(unsigned i
) const
975 switch (this->type
->base_type
) {
976 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
977 case GLSL_TYPE_INT
: return this->value
.i
[i
];
978 case GLSL_TYPE_FLOAT
: return (int) this->value
.f
[i
];
979 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
980 case GLSL_TYPE_DOUBLE
: return (int) this->value
.d
[i
];
981 case GLSL_TYPE_UINT64
: return (int) this->value
.u64
[i
];
982 case GLSL_TYPE_INT64
: return (int) this->value
.i64
[i
];
983 default: assert(!"Should not get here."); break;
986 /* Must return something to make the compiler happy. This is clearly an
993 ir_constant::get_uint_component(unsigned i
) const
995 switch (this->type
->base_type
) {
996 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
997 case GLSL_TYPE_INT
: return this->value
.i
[i
];
998 case GLSL_TYPE_FLOAT
: return (unsigned) this->value
.f
[i
];
999 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1000 case GLSL_TYPE_DOUBLE
: return (unsigned) this->value
.d
[i
];
1001 case GLSL_TYPE_UINT64
: return (unsigned) this->value
.u64
[i
];
1002 case GLSL_TYPE_INT64
: return (unsigned) this->value
.i64
[i
];
1003 default: assert(!"Should not get here."); break;
1006 /* Must return something to make the compiler happy. This is clearly an
1013 ir_constant::get_int64_component(unsigned i
) const
1015 switch (this->type
->base_type
) {
1016 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1017 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1018 case GLSL_TYPE_FLOAT
: return (int64_t) this->value
.f
[i
];
1019 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1020 case GLSL_TYPE_DOUBLE
: return (int64_t) this->value
.d
[i
];
1021 case GLSL_TYPE_UINT64
: return (int64_t) this->value
.u64
[i
];
1022 case GLSL_TYPE_INT64
: return this->value
.i64
[i
];
1023 default: assert(!"Should not get here."); break;
1026 /* Must return something to make the compiler happy. This is clearly an
1033 ir_constant::get_uint64_component(unsigned i
) const
1035 switch (this->type
->base_type
) {
1036 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1037 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1038 case GLSL_TYPE_FLOAT
: return (uint64_t) this->value
.f
[i
];
1039 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1040 case GLSL_TYPE_DOUBLE
: return (uint64_t) this->value
.d
[i
];
1041 case GLSL_TYPE_UINT64
: return this->value
.u64
[i
];
1042 case GLSL_TYPE_INT64
: return (uint64_t) this->value
.i64
[i
];
1043 default: assert(!"Should not get here."); break;
1046 /* Must return something to make the compiler happy. This is clearly an
1053 ir_constant::get_array_element(unsigned i
) const
1055 assert(this->type
->is_array());
1057 /* From page 35 (page 41 of the PDF) of the GLSL 1.20 spec:
1059 * "Behavior is undefined if a shader subscripts an array with an index
1060 * less than 0 or greater than or equal to the size the array was
1063 * Most out-of-bounds accesses are removed before things could get this far.
1064 * There are cases where non-constant array index values can get constant
1069 else if (i
>= this->type
->length
)
1070 i
= this->type
->length
- 1;
1072 return array_elements
[i
];
1076 ir_constant::get_record_field(const char *name
)
1078 int idx
= this->type
->field_index(name
);
1083 if (this->components
.is_empty())
1086 exec_node
*node
= this->components
.get_head_raw();
1087 for (int i
= 0; i
< idx
; i
++) {
1090 /* If the end of the list is encountered before the element matching the
1091 * requested field is found, return NULL.
1093 if (node
->is_tail_sentinel())
1097 return (ir_constant
*) node
;
1101 ir_constant::copy_offset(ir_constant
*src
, int offset
)
1103 switch (this->type
->base_type
) {
1104 case GLSL_TYPE_UINT
:
1106 case GLSL_TYPE_FLOAT
:
1107 case GLSL_TYPE_DOUBLE
:
1108 case GLSL_TYPE_UINT64
:
1109 case GLSL_TYPE_INT64
:
1110 case GLSL_TYPE_BOOL
: {
1111 unsigned int size
= src
->type
->components();
1112 assert (size
<= this->type
->components() - offset
);
1113 for (unsigned int i
=0; i
<size
; i
++) {
1114 switch (this->type
->base_type
) {
1115 case GLSL_TYPE_UINT
:
1116 value
.u
[i
+offset
] = src
->get_uint_component(i
);
1119 value
.i
[i
+offset
] = src
->get_int_component(i
);
1121 case GLSL_TYPE_FLOAT
:
1122 value
.f
[i
+offset
] = src
->get_float_component(i
);
1124 case GLSL_TYPE_BOOL
:
1125 value
.b
[i
+offset
] = src
->get_bool_component(i
);
1127 case GLSL_TYPE_DOUBLE
:
1128 value
.d
[i
+offset
] = src
->get_double_component(i
);
1130 case GLSL_TYPE_UINT64
:
1131 value
.u64
[i
+offset
] = src
->get_uint64_component(i
);
1133 case GLSL_TYPE_INT64
:
1134 value
.i64
[i
+offset
] = src
->get_int64_component(i
);
1136 default: // Shut up the compiler
1143 case GLSL_TYPE_STRUCT
: {
1144 assert (src
->type
== this->type
);
1145 this->components
.make_empty();
1146 foreach_in_list(ir_constant
, orig
, &src
->components
) {
1147 this->components
.push_tail(orig
->clone(this, NULL
));
1152 case GLSL_TYPE_ARRAY
: {
1153 assert (src
->type
== this->type
);
1154 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1155 this->array_elements
[i
] = src
->array_elements
[i
]->clone(this, NULL
);
1161 assert(!"Should not get here.");
1167 ir_constant::copy_masked_offset(ir_constant
*src
, int offset
, unsigned int mask
)
1169 assert (!type
->is_array() && !type
->is_record());
1171 if (!type
->is_vector() && !type
->is_matrix()) {
1177 for (int i
=0; i
<4; i
++) {
1178 if (mask
& (1 << i
)) {
1179 switch (this->type
->base_type
) {
1180 case GLSL_TYPE_UINT
:
1181 value
.u
[i
+offset
] = src
->get_uint_component(id
++);
1184 value
.i
[i
+offset
] = src
->get_int_component(id
++);
1186 case GLSL_TYPE_FLOAT
:
1187 value
.f
[i
+offset
] = src
->get_float_component(id
++);
1189 case GLSL_TYPE_BOOL
:
1190 value
.b
[i
+offset
] = src
->get_bool_component(id
++);
1192 case GLSL_TYPE_DOUBLE
:
1193 value
.d
[i
+offset
] = src
->get_double_component(id
++);
1195 case GLSL_TYPE_UINT64
:
1196 value
.u64
[i
+offset
] = src
->get_uint64_component(id
++);
1198 case GLSL_TYPE_INT64
:
1199 value
.i64
[i
+offset
] = src
->get_int64_component(id
++);
1202 assert(!"Should not get here.");
1210 ir_constant::has_value(const ir_constant
*c
) const
1212 if (this->type
!= c
->type
)
1215 if (this->type
->is_array()) {
1216 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1217 if (!this->array_elements
[i
]->has_value(c
->array_elements
[i
]))
1223 if (this->type
->is_record()) {
1224 const exec_node
*a_node
= this->components
.get_head_raw();
1225 const exec_node
*b_node
= c
->components
.get_head_raw();
1227 while (!a_node
->is_tail_sentinel()) {
1228 assert(!b_node
->is_tail_sentinel());
1230 const ir_constant
*const a_field
= (ir_constant
*) a_node
;
1231 const ir_constant
*const b_field
= (ir_constant
*) b_node
;
1233 if (!a_field
->has_value(b_field
))
1236 a_node
= a_node
->next
;
1237 b_node
= b_node
->next
;
1243 for (unsigned i
= 0; i
< this->type
->components(); i
++) {
1244 switch (this->type
->base_type
) {
1245 case GLSL_TYPE_UINT
:
1246 if (this->value
.u
[i
] != c
->value
.u
[i
])
1250 if (this->value
.i
[i
] != c
->value
.i
[i
])
1253 case GLSL_TYPE_FLOAT
:
1254 if (this->value
.f
[i
] != c
->value
.f
[i
])
1257 case GLSL_TYPE_BOOL
:
1258 if (this->value
.b
[i
] != c
->value
.b
[i
])
1261 case GLSL_TYPE_DOUBLE
:
1262 if (this->value
.d
[i
] != c
->value
.d
[i
])
1265 case GLSL_TYPE_UINT64
:
1266 if (this->value
.u64
[i
] != c
->value
.u64
[i
])
1269 case GLSL_TYPE_INT64
:
1270 if (this->value
.i64
[i
] != c
->value
.i64
[i
])
1274 assert(!"Should not get here.");
1283 ir_constant::is_value(float f
, int i
) const
1285 if (!this->type
->is_scalar() && !this->type
->is_vector())
1288 /* Only accept boolean values for 0/1. */
1289 if (int(bool(i
)) != i
&& this->type
->is_boolean())
1292 for (unsigned c
= 0; c
< this->type
->vector_elements
; c
++) {
1293 switch (this->type
->base_type
) {
1294 case GLSL_TYPE_FLOAT
:
1295 if (this->value
.f
[c
] != f
)
1299 if (this->value
.i
[c
] != i
)
1302 case GLSL_TYPE_UINT
:
1303 if (this->value
.u
[c
] != unsigned(i
))
1306 case GLSL_TYPE_BOOL
:
1307 if (this->value
.b
[c
] != bool(i
))
1310 case GLSL_TYPE_DOUBLE
:
1311 if (this->value
.d
[c
] != double(f
))
1314 case GLSL_TYPE_UINT64
:
1315 if (this->value
.u64
[c
] != uint64_t(i
))
1318 case GLSL_TYPE_INT64
:
1319 if (this->value
.i64
[c
] != i
)
1323 /* The only other base types are structures, arrays, and samplers.
1324 * Samplers cannot be constants, and the others should have been
1325 * filtered out above.
1327 assert(!"Should not get here.");
1336 ir_constant::is_zero() const
1338 return is_value(0.0, 0);
1342 ir_constant::is_one() const
1344 return is_value(1.0, 1);
1348 ir_constant::is_negative_one() const
1350 return is_value(-1.0, -1);
1354 ir_constant::is_uint16_constant() const
1356 if (!type
->is_integer())
1359 return value
.u
[0] < (1 << 16);
1363 : ir_instruction(ir_type_loop
)
1368 ir_dereference_variable::ir_dereference_variable(ir_variable
*var
)
1369 : ir_dereference(ir_type_dereference_variable
)
1371 assert(var
!= NULL
);
1374 this->type
= var
->type
;
1378 ir_dereference_array::ir_dereference_array(ir_rvalue
*value
,
1379 ir_rvalue
*array_index
)
1380 : ir_dereference(ir_type_dereference_array
)
1382 this->array_index
= array_index
;
1383 this->set_array(value
);
1387 ir_dereference_array::ir_dereference_array(ir_variable
*var
,
1388 ir_rvalue
*array_index
)
1389 : ir_dereference(ir_type_dereference_array
)
1391 void *ctx
= ralloc_parent(var
);
1393 this->array_index
= array_index
;
1394 this->set_array(new(ctx
) ir_dereference_variable(var
));
1399 ir_dereference_array::set_array(ir_rvalue
*value
)
1401 assert(value
!= NULL
);
1403 this->array
= value
;
1405 const glsl_type
*const vt
= this->array
->type
;
1407 if (vt
->is_array()) {
1408 type
= vt
->fields
.array
;
1409 } else if (vt
->is_matrix()) {
1410 type
= vt
->column_type();
1411 } else if (vt
->is_vector()) {
1412 type
= vt
->get_base_type();
1417 ir_dereference_record::ir_dereference_record(ir_rvalue
*value
,
1419 : ir_dereference(ir_type_dereference_record
)
1421 assert(value
!= NULL
);
1423 this->record
= value
;
1424 this->field
= ralloc_strdup(this, field
);
1425 this->type
= this->record
->type
->field_type(field
);
1429 ir_dereference_record::ir_dereference_record(ir_variable
*var
,
1431 : ir_dereference(ir_type_dereference_record
)
1433 void *ctx
= ralloc_parent(var
);
1435 this->record
= new(ctx
) ir_dereference_variable(var
);
1436 this->field
= ralloc_strdup(this, field
);
1437 this->type
= this->record
->type
->field_type(field
);
1441 ir_dereference::is_lvalue(const struct _mesa_glsl_parse_state
*state
) const
1443 ir_variable
*var
= this->variable_referenced();
1445 /* Every l-value derference chain eventually ends in a variable.
1447 if ((var
== NULL
) || var
->data
.read_only
)
1450 /* From section 4.1.7 of the GLSL 4.40 spec:
1452 * "Opaque variables cannot be treated as l-values; hence cannot
1453 * be used as out or inout function parameters, nor can they be
1456 if (this->type
->contains_opaque())
1463 static const char * const tex_opcode_strs
[] = { "tex", "txb", "txl", "txd", "txf", "txf_ms", "txs", "lod", "tg4", "query_levels", "texture_samples", "samples_identical" };
1465 const char *ir_texture::opcode_string()
1467 assert((unsigned int) op
< ARRAY_SIZE(tex_opcode_strs
));
1468 return tex_opcode_strs
[op
];
1472 ir_texture::get_opcode(const char *str
)
1474 const int count
= sizeof(tex_opcode_strs
) / sizeof(tex_opcode_strs
[0]);
1475 for (int op
= 0; op
< count
; op
++) {
1476 if (strcmp(str
, tex_opcode_strs
[op
]) == 0)
1477 return (ir_texture_opcode
) op
;
1479 return (ir_texture_opcode
) -1;
1484 ir_texture::set_sampler(ir_dereference
*sampler
, const glsl_type
*type
)
1486 assert(sampler
!= NULL
);
1487 assert(type
!= NULL
);
1488 this->sampler
= sampler
;
1491 if (this->op
== ir_txs
|| this->op
== ir_query_levels
||
1492 this->op
== ir_texture_samples
) {
1493 assert(type
->base_type
== GLSL_TYPE_INT
);
1494 } else if (this->op
== ir_lod
) {
1495 assert(type
->vector_elements
== 2);
1496 assert(type
->is_float());
1497 } else if (this->op
== ir_samples_identical
) {
1498 assert(type
== glsl_type::bool_type
);
1499 assert(sampler
->type
->is_sampler());
1500 assert(sampler
->type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
);
1502 assert(sampler
->type
->sampled_type
== (int) type
->base_type
);
1503 if (sampler
->type
->sampler_shadow
)
1504 assert(type
->vector_elements
== 4 || type
->vector_elements
== 1);
1506 assert(type
->vector_elements
== 4);
1512 ir_swizzle::init_mask(const unsigned *comp
, unsigned count
)
1514 assert((count
>= 1) && (count
<= 4));
1516 memset(&this->mask
, 0, sizeof(this->mask
));
1517 this->mask
.num_components
= count
;
1519 unsigned dup_mask
= 0;
1522 assert(comp
[3] <= 3);
1523 dup_mask
|= (1U << comp
[3])
1524 & ((1U << comp
[0]) | (1U << comp
[1]) | (1U << comp
[2]));
1525 this->mask
.w
= comp
[3];
1528 assert(comp
[2] <= 3);
1529 dup_mask
|= (1U << comp
[2])
1530 & ((1U << comp
[0]) | (1U << comp
[1]));
1531 this->mask
.z
= comp
[2];
1534 assert(comp
[1] <= 3);
1535 dup_mask
|= (1U << comp
[1])
1536 & ((1U << comp
[0]));
1537 this->mask
.y
= comp
[1];
1540 assert(comp
[0] <= 3);
1541 this->mask
.x
= comp
[0];
1544 this->mask
.has_duplicates
= dup_mask
!= 0;
1546 /* Based on the number of elements in the swizzle and the base type
1547 * (i.e., float, int, unsigned, or bool) of the vector being swizzled,
1548 * generate the type of the resulting value.
1550 type
= glsl_type::get_instance(val
->type
->base_type
, mask
.num_components
, 1);
1553 ir_swizzle::ir_swizzle(ir_rvalue
*val
, unsigned x
, unsigned y
, unsigned z
,
1554 unsigned w
, unsigned count
)
1555 : ir_rvalue(ir_type_swizzle
), val(val
)
1557 const unsigned components
[4] = { x
, y
, z
, w
};
1558 this->init_mask(components
, count
);
1561 ir_swizzle::ir_swizzle(ir_rvalue
*val
, const unsigned *comp
,
1563 : ir_rvalue(ir_type_swizzle
), val(val
)
1565 this->init_mask(comp
, count
);
1568 ir_swizzle::ir_swizzle(ir_rvalue
*val
, ir_swizzle_mask mask
)
1569 : ir_rvalue(ir_type_swizzle
)
1573 this->type
= glsl_type::get_instance(val
->type
->base_type
,
1574 mask
.num_components
, 1);
1583 ir_swizzle::create(ir_rvalue
*val
, const char *str
, unsigned vector_length
)
1585 void *ctx
= ralloc_parent(val
);
1587 /* For each possible swizzle character, this table encodes the value in
1588 * \c idx_map that represents the 0th element of the vector. For invalid
1589 * swizzle characters (e.g., 'k'), a special value is used that will allow
1590 * detection of errors.
1592 static const unsigned char base_idx
[26] = {
1593 /* a b c d e f g h i j k l m */
1594 R
, R
, I
, I
, I
, I
, R
, I
, I
, I
, I
, I
, I
,
1595 /* n o p q r s t u v w x y z */
1596 I
, I
, S
, S
, R
, S
, S
, I
, I
, X
, X
, X
, X
1599 /* Each valid swizzle character has an entry in the previous table. This
1600 * table encodes the base index encoded in the previous table plus the actual
1601 * index of the swizzle character. When processing swizzles, the first
1602 * character in the string is indexed in the previous table. Each character
1603 * in the string is indexed in this table, and the value found there has the
1604 * value form the first table subtracted. The result must be on the range
1607 * For example, the string "wzyx" will get X from the first table. Each of
1608 * the charcaters will get X+3, X+2, X+1, and X+0 from this table. After
1609 * subtraction, the swizzle values are { 3, 2, 1, 0 }.
1611 * The string "wzrg" will get X from the first table. Each of the characters
1612 * will get X+3, X+2, R+0, and R+1 from this table. After subtraction, the
1613 * swizzle values are { 3, 2, 4, 5 }. Since 4 and 5 are outside the range
1614 * [0,3], the error is detected.
1616 static const unsigned char idx_map
[26] = {
1617 /* a b c d e f g h i j k l m */
1618 R
+3, R
+2, 0, 0, 0, 0, R
+1, 0, 0, 0, 0, 0, 0,
1619 /* n o p q r s t u v w x y z */
1620 0, 0, S
+2, S
+3, R
+0, S
+0, S
+1, 0, 0, X
+3, X
+0, X
+1, X
+2
1623 int swiz_idx
[4] = { 0, 0, 0, 0 };
1627 /* Validate the first character in the swizzle string and look up the base
1628 * index value as described above.
1630 if ((str
[0] < 'a') || (str
[0] > 'z'))
1633 const unsigned base
= base_idx
[str
[0] - 'a'];
1636 for (i
= 0; (i
< 4) && (str
[i
] != '\0'); i
++) {
1637 /* Validate the next character, and, as described above, convert it to a
1640 if ((str
[i
] < 'a') || (str
[i
] > 'z'))
1643 swiz_idx
[i
] = idx_map
[str
[i
] - 'a'] - base
;
1644 if ((swiz_idx
[i
] < 0) || (swiz_idx
[i
] >= (int) vector_length
))
1651 return new(ctx
) ir_swizzle(val
, swiz_idx
[0], swiz_idx
[1], swiz_idx
[2],
1661 ir_swizzle::variable_referenced() const
1663 return this->val
->variable_referenced();
1667 bool ir_variable::temporaries_allocate_names
= false;
1669 const char ir_variable::tmp_name
[] = "compiler_temp";
1671 ir_variable::ir_variable(const struct glsl_type
*type
, const char *name
,
1672 ir_variable_mode mode
)
1673 : ir_instruction(ir_type_variable
)
1677 if (mode
== ir_var_temporary
&& !ir_variable::temporaries_allocate_names
)
1680 /* The ir_variable clone method may call this constructor with name set to
1684 || mode
== ir_var_temporary
1685 || mode
== ir_var_function_in
1686 || mode
== ir_var_function_out
1687 || mode
== ir_var_function_inout
);
1688 assert(name
!= ir_variable::tmp_name
1689 || mode
== ir_var_temporary
);
1690 if (mode
== ir_var_temporary
1691 && (name
== NULL
|| name
== ir_variable::tmp_name
)) {
1692 this->name
= ir_variable::tmp_name
;
1693 } else if (name
== NULL
||
1694 strlen(name
) < ARRAY_SIZE(this->name_storage
)) {
1695 strcpy(this->name_storage
, name
? name
: "");
1696 this->name
= this->name_storage
;
1698 this->name
= ralloc_strdup(this, name
);
1701 this->u
.max_ifc_array_access
= NULL
;
1703 this->data
.explicit_location
= false;
1704 this->data
.has_initializer
= false;
1705 this->data
.location
= -1;
1706 this->data
.location_frac
= 0;
1707 this->data
.binding
= 0;
1708 this->data
.warn_extension_index
= 0;
1709 this->constant_value
= NULL
;
1710 this->constant_initializer
= NULL
;
1711 this->data
.origin_upper_left
= false;
1712 this->data
.pixel_center_integer
= false;
1713 this->data
.depth_layout
= ir_depth_layout_none
;
1714 this->data
.used
= false;
1715 this->data
.always_active_io
= false;
1716 this->data
.read_only
= false;
1717 this->data
.centroid
= false;
1718 this->data
.sample
= false;
1719 this->data
.patch
= false;
1720 this->data
.invariant
= false;
1721 this->data
.how_declared
= ir_var_declared_normally
;
1722 this->data
.mode
= mode
;
1723 this->data
.interpolation
= INTERP_MODE_NONE
;
1724 this->data
.max_array_access
= -1;
1725 this->data
.offset
= 0;
1726 this->data
.precision
= GLSL_PRECISION_NONE
;
1727 this->data
.memory_read_only
= false;
1728 this->data
.memory_write_only
= false;
1729 this->data
.memory_coherent
= false;
1730 this->data
.memory_volatile
= false;
1731 this->data
.memory_restrict
= false;
1732 this->data
.from_ssbo_unsized_array
= false;
1733 this->data
.fb_fetch_output
= false;
1734 this->data
.bindless
= false;
1735 this->data
.bound
= false;
1738 if (type
->is_interface())
1739 this->init_interface_type(type
);
1740 else if (type
->without_array()->is_interface())
1741 this->init_interface_type(type
->without_array());
1747 interpolation_string(unsigned interpolation
)
1749 switch (interpolation
) {
1750 case INTERP_MODE_NONE
: return "no";
1751 case INTERP_MODE_SMOOTH
: return "smooth";
1752 case INTERP_MODE_FLAT
: return "flat";
1753 case INTERP_MODE_NOPERSPECTIVE
: return "noperspective";
1756 assert(!"Should not get here.");
1760 const char *const ir_variable::warn_extension_table
[] = {
1762 "GL_ARB_shader_stencil_export",
1763 "GL_AMD_shader_stencil_export",
1767 ir_variable::enable_extension_warning(const char *extension
)
1769 for (unsigned i
= 0; i
< ARRAY_SIZE(warn_extension_table
); i
++) {
1770 if (strcmp(warn_extension_table
[i
], extension
) == 0) {
1771 this->data
.warn_extension_index
= i
;
1776 assert(!"Should not get here.");
1777 this->data
.warn_extension_index
= 0;
1781 ir_variable::get_extension_warning() const
1783 return this->data
.warn_extension_index
== 0
1784 ? NULL
: warn_extension_table
[this->data
.warn_extension_index
];
1787 ir_function_signature::ir_function_signature(const glsl_type
*return_type
,
1788 builtin_available_predicate b
)
1789 : ir_instruction(ir_type_function_signature
),
1790 return_type(return_type
), is_defined(false),
1791 intrinsic_id(ir_intrinsic_invalid
), builtin_avail(b
), _function(NULL
)
1793 this->origin
= NULL
;
1798 ir_function_signature::is_builtin() const
1800 return builtin_avail
!= NULL
;
1805 ir_function_signature::is_builtin_available(const _mesa_glsl_parse_state
*state
) const
1807 /* We can't call the predicate without a state pointer, so just say that
1808 * the signature is available. At compile time, we need the filtering,
1809 * but also receive a valid state pointer. At link time, we're resolving
1810 * imported built-in prototypes to their definitions, which will always
1811 * be an exact match. So we can skip the filtering.
1816 assert(builtin_avail
!= NULL
);
1817 return builtin_avail(state
);
1822 modes_match(unsigned a
, unsigned b
)
1827 /* Accept "in" vs. "const in" */
1828 if ((a
== ir_var_const_in
&& b
== ir_var_function_in
) ||
1829 (b
== ir_var_const_in
&& a
== ir_var_function_in
))
1837 ir_function_signature::qualifiers_match(exec_list
*params
)
1839 /* check that the qualifiers match. */
1840 foreach_two_lists(a_node
, &this->parameters
, b_node
, params
) {
1841 ir_variable
*a
= (ir_variable
*) a_node
;
1842 ir_variable
*b
= (ir_variable
*) b_node
;
1844 if (a
->data
.read_only
!= b
->data
.read_only
||
1845 !modes_match(a
->data
.mode
, b
->data
.mode
) ||
1846 a
->data
.interpolation
!= b
->data
.interpolation
||
1847 a
->data
.centroid
!= b
->data
.centroid
||
1848 a
->data
.sample
!= b
->data
.sample
||
1849 a
->data
.patch
!= b
->data
.patch
||
1850 a
->data
.memory_read_only
!= b
->data
.memory_read_only
||
1851 a
->data
.memory_write_only
!= b
->data
.memory_write_only
||
1852 a
->data
.memory_coherent
!= b
->data
.memory_coherent
||
1853 a
->data
.memory_volatile
!= b
->data
.memory_volatile
||
1854 a
->data
.memory_restrict
!= b
->data
.memory_restrict
) {
1856 /* parameter a's qualifiers don't match */
1865 ir_function_signature::replace_parameters(exec_list
*new_params
)
1867 /* Destroy all of the previous parameter information. If the previous
1868 * parameter information comes from the function prototype, it may either
1869 * specify incorrect parameter names or not have names at all.
1871 new_params
->move_nodes_to(¶meters
);
1875 ir_function::ir_function(const char *name
)
1876 : ir_instruction(ir_type_function
)
1878 this->subroutine_index
= -1;
1879 this->name
= ralloc_strdup(this, name
);
1884 ir_function::has_user_signature()
1886 foreach_in_list(ir_function_signature
, sig
, &this->signatures
) {
1887 if (!sig
->is_builtin())
1895 ir_rvalue::error_value(void *mem_ctx
)
1897 ir_rvalue
*v
= new(mem_ctx
) ir_rvalue(ir_type_unset
);
1899 v
->type
= glsl_type::error_type
;
1905 visit_exec_list(exec_list
*list
, ir_visitor
*visitor
)
1907 foreach_in_list_safe(ir_instruction
, node
, list
) {
1908 node
->accept(visitor
);
1914 steal_memory(ir_instruction
*ir
, void *new_ctx
)
1916 ir_variable
*var
= ir
->as_variable();
1917 ir_function
*fn
= ir
->as_function();
1918 ir_constant
*constant
= ir
->as_constant();
1919 if (var
!= NULL
&& var
->constant_value
!= NULL
)
1920 steal_memory(var
->constant_value
, ir
);
1922 if (var
!= NULL
&& var
->constant_initializer
!= NULL
)
1923 steal_memory(var
->constant_initializer
, ir
);
1925 if (fn
!= NULL
&& fn
->subroutine_types
)
1926 ralloc_steal(new_ctx
, fn
->subroutine_types
);
1928 /* The components of aggregate constants are not visited by the normal
1929 * visitor, so steal their values by hand.
1931 if (constant
!= NULL
) {
1932 if (constant
->type
->is_record()) {
1933 foreach_in_list(ir_constant
, field
, &constant
->components
) {
1934 steal_memory(field
, ir
);
1936 } else if (constant
->type
->is_array()) {
1937 for (unsigned int i
= 0; i
< constant
->type
->length
; i
++) {
1938 steal_memory(constant
->array_elements
[i
], ir
);
1943 ralloc_steal(new_ctx
, ir
);
1948 reparent_ir(exec_list
*list
, void *mem_ctx
)
1950 foreach_in_list(ir_instruction
, node
, list
) {
1951 visit_tree(node
, steal_memory
, mem_ctx
);
1957 try_min_one(ir_rvalue
*ir
)
1959 ir_expression
*expr
= ir
->as_expression();
1961 if (!expr
|| expr
->operation
!= ir_binop_min
)
1964 if (expr
->operands
[0]->is_one())
1965 return expr
->operands
[1];
1967 if (expr
->operands
[1]->is_one())
1968 return expr
->operands
[0];
1974 try_max_zero(ir_rvalue
*ir
)
1976 ir_expression
*expr
= ir
->as_expression();
1978 if (!expr
|| expr
->operation
!= ir_binop_max
)
1981 if (expr
->operands
[0]->is_zero())
1982 return expr
->operands
[1];
1984 if (expr
->operands
[1]->is_zero())
1985 return expr
->operands
[0];
1991 ir_rvalue::as_rvalue_to_saturate()
1993 ir_expression
*expr
= this->as_expression();
1998 ir_rvalue
*max_zero
= try_max_zero(expr
);
2000 return try_min_one(max_zero
);
2002 ir_rvalue
*min_one
= try_min_one(expr
);
2004 return try_max_zero(min_one
);
2013 vertices_per_prim(GLenum prim
)
2022 case GL_LINES_ADJACENCY
:
2024 case GL_TRIANGLES_ADJACENCY
:
2027 assert(!"Bad primitive");
2033 * Generate a string describing the mode of a variable
2036 mode_string(const ir_variable
*var
)
2038 switch (var
->data
.mode
) {
2040 return (var
->data
.read_only
) ? "global constant" : "global variable";
2042 case ir_var_uniform
:
2045 case ir_var_shader_storage
:
2048 case ir_var_shader_in
:
2049 return "shader input";
2051 case ir_var_shader_out
:
2052 return "shader output";
2054 case ir_var_function_in
:
2055 case ir_var_const_in
:
2056 return "function input";
2058 case ir_var_function_out
:
2059 return "function output";
2061 case ir_var_function_inout
:
2062 return "function inout";
2064 case ir_var_system_value
:
2065 return "shader input";
2067 case ir_var_temporary
:
2068 return "compiler temporary";
2070 case ir_var_mode_count
:
2074 assert(!"Should not get here.");
2075 return "invalid variable";