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"
28 ir_rvalue::ir_rvalue(enum ir_node_type t
)
31 this->type
= glsl_type::error_type
;
34 bool ir_rvalue::is_zero() const
39 bool ir_rvalue::is_one() const
44 bool ir_rvalue::is_negative_one() const
50 * Modify the swizzle make to move one component to another
52 * \param m IR swizzle to be modified
53 * \param from Component in the RHS that is to be swizzled
54 * \param to Desired swizzle location of \c from
57 update_rhs_swizzle(ir_swizzle_mask
&m
, unsigned from
, unsigned to
)
60 case 0: m
.x
= from
; break;
61 case 1: m
.y
= from
; break;
62 case 2: m
.z
= from
; break;
63 case 3: m
.w
= from
; break;
64 default: assert(!"Should not get here.");
69 ir_assignment::set_lhs(ir_rvalue
*lhs
)
72 bool swizzled
= false;
75 ir_swizzle
*swiz
= lhs
->as_swizzle();
80 unsigned write_mask
= 0;
81 ir_swizzle_mask rhs_swiz
= { 0, 0, 0, 0, 0, 0 };
83 for (unsigned i
= 0; i
< swiz
->mask
.num_components
; i
++) {
87 case 0: c
= swiz
->mask
.x
; break;
88 case 1: c
= swiz
->mask
.y
; break;
89 case 2: c
= swiz
->mask
.z
; break;
90 case 3: c
= swiz
->mask
.w
; break;
91 default: assert(!"Should not get here.");
94 write_mask
|= (((this->write_mask
>> i
) & 1) << c
);
95 update_rhs_swizzle(rhs_swiz
, i
, c
);
96 rhs_swiz
.num_components
= swiz
->val
->type
->vector_elements
;
99 this->write_mask
= write_mask
;
102 this->rhs
= new(mem_ctx
) ir_swizzle(this->rhs
, rhs_swiz
);
107 /* Now, RHS channels line up with the LHS writemask. Collapse it
108 * to just the channels that will be written.
110 ir_swizzle_mask rhs_swiz
= { 0, 0, 0, 0, 0, 0 };
112 for (int i
= 0; i
< 4; i
++) {
113 if (write_mask
& (1 << i
))
114 update_rhs_swizzle(rhs_swiz
, i
, rhs_chan
++);
116 rhs_swiz
.num_components
= rhs_chan
;
117 this->rhs
= new(mem_ctx
) ir_swizzle(this->rhs
, rhs_swiz
);
120 assert((lhs
== NULL
) || lhs
->as_dereference());
122 this->lhs
= (ir_dereference
*) lhs
;
126 ir_assignment::whole_variable_written()
128 ir_variable
*v
= this->lhs
->whole_variable_referenced();
133 if (v
->type
->is_scalar())
136 if (v
->type
->is_vector()) {
137 const unsigned mask
= (1U << v
->type
->vector_elements
) - 1;
139 if (mask
!= this->write_mask
)
143 /* Either all the vector components are assigned or the variable is some
144 * composite type (and the whole thing is assigned.
149 ir_assignment::ir_assignment(ir_dereference
*lhs
, ir_rvalue
*rhs
,
150 ir_rvalue
*condition
, unsigned write_mask
)
151 : ir_instruction(ir_type_assignment
)
153 this->condition
= condition
;
156 this->write_mask
= write_mask
;
158 if (lhs
->type
->is_scalar() || lhs
->type
->is_vector()) {
159 int lhs_components
= 0;
160 for (int i
= 0; i
< 4; i
++) {
161 if (write_mask
& (1 << i
))
165 assert(lhs_components
== this->rhs
->type
->vector_elements
);
169 ir_assignment::ir_assignment(ir_rvalue
*lhs
, ir_rvalue
*rhs
,
170 ir_rvalue
*condition
)
171 : ir_instruction(ir_type_assignment
)
173 this->condition
= condition
;
176 /* If the RHS is a vector type, assume that all components of the vector
177 * type are being written to the LHS. The write mask comes from the RHS
178 * because we can have a case where the LHS is a vec4 and the RHS is a
179 * vec3. In that case, the assignment is:
181 * (assign (...) (xyz) (var_ref lhs) (var_ref rhs))
183 if (rhs
->type
->is_vector())
184 this->write_mask
= (1U << rhs
->type
->vector_elements
) - 1;
185 else if (rhs
->type
->is_scalar())
186 this->write_mask
= 1;
188 this->write_mask
= 0;
193 ir_expression::ir_expression(int op
, const struct glsl_type
*type
,
194 ir_rvalue
*op0
, ir_rvalue
*op1
,
195 ir_rvalue
*op2
, ir_rvalue
*op3
)
196 : ir_rvalue(ir_type_expression
)
199 this->operation
= ir_expression_operation(op
);
200 this->operands
[0] = op0
;
201 this->operands
[1] = op1
;
202 this->operands
[2] = op2
;
203 this->operands
[3] = op3
;
205 int num_operands
= get_num_operands(this->operation
);
206 for (int i
= num_operands
; i
< 4; i
++) {
207 assert(this->operands
[i
] == NULL
);
212 ir_expression::ir_expression(int op
, ir_rvalue
*op0
)
213 : ir_rvalue(ir_type_expression
)
215 this->operation
= ir_expression_operation(op
);
216 this->operands
[0] = op0
;
217 this->operands
[1] = NULL
;
218 this->operands
[2] = NULL
;
219 this->operands
[3] = NULL
;
221 assert(op
<= ir_last_unop
);
223 switch (this->operation
) {
224 case ir_unop_bit_not
:
225 case ir_unop_logic_not
:
240 case ir_unop_round_even
:
244 case ir_unop_dFdx_coarse
:
245 case ir_unop_dFdx_fine
:
247 case ir_unop_dFdy_coarse
:
248 case ir_unop_dFdy_fine
:
249 case ir_unop_bitfield_reverse
:
250 case ir_unop_interpolate_at_centroid
:
251 case ir_unop_saturate
:
252 this->type
= op0
->type
;
259 case ir_unop_bitcast_f2i
:
260 case ir_unop_bit_count
:
261 case ir_unop_find_msb
:
262 case ir_unop_find_lsb
:
263 case ir_unop_subroutine_to_int
:
264 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
,
265 op0
->type
->vector_elements
, 1);
272 case ir_unop_bitcast_i2f
:
273 case ir_unop_bitcast_u2f
:
274 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
,
275 op0
->type
->vector_elements
, 1);
281 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
,
282 op0
->type
->vector_elements
, 1);
288 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
,
289 op0
->type
->vector_elements
, 1);
295 case ir_unop_bitcast_f2u
:
296 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT
,
297 op0
->type
->vector_elements
, 1);
301 this->type
= glsl_type::float_type
;
304 case ir_unop_unpack_double_2x32
:
305 this->type
= glsl_type::uvec2_type
;
308 case ir_unop_pack_snorm_2x16
:
309 case ir_unop_pack_snorm_4x8
:
310 case ir_unop_pack_unorm_2x16
:
311 case ir_unop_pack_unorm_4x8
:
312 case ir_unop_pack_half_2x16
:
313 this->type
= glsl_type::uint_type
;
316 case ir_unop_pack_double_2x32
:
317 this->type
= glsl_type::double_type
;
320 case ir_unop_unpack_snorm_2x16
:
321 case ir_unop_unpack_unorm_2x16
:
322 case ir_unop_unpack_half_2x16
:
323 this->type
= glsl_type::vec2_type
;
326 case ir_unop_unpack_snorm_4x8
:
327 case ir_unop_unpack_unorm_4x8
:
328 this->type
= glsl_type::vec4_type
;
331 case ir_unop_frexp_sig
:
332 this->type
= op0
->type
;
334 case ir_unop_frexp_exp
:
335 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
,
336 op0
->type
->vector_elements
, 1);
339 case ir_unop_get_buffer_size
:
340 case ir_unop_ssbo_unsized_array_length
:
341 this->type
= glsl_type::int_type
;
344 case ir_unop_vote_any
:
345 case ir_unop_vote_all
:
346 case ir_unop_vote_eq
:
347 this->type
= glsl_type::bool_type
;
351 assert(!"not reached: missing automatic type setup for ir_expression");
352 this->type
= op0
->type
;
357 ir_expression::ir_expression(int op
, ir_rvalue
*op0
, ir_rvalue
*op1
)
358 : ir_rvalue(ir_type_expression
)
360 this->operation
= ir_expression_operation(op
);
361 this->operands
[0] = op0
;
362 this->operands
[1] = op1
;
363 this->operands
[2] = NULL
;
364 this->operands
[3] = NULL
;
366 assert(op
> ir_last_unop
);
368 switch (this->operation
) {
369 case ir_binop_all_equal
:
370 case ir_binop_any_nequal
:
371 this->type
= glsl_type::bool_type
;
382 if (op0
->type
->is_scalar()) {
383 this->type
= op1
->type
;
384 } else if (op1
->type
->is_scalar()) {
385 this->type
= op0
->type
;
387 if (this->operation
== ir_binop_mul
) {
388 this->type
= glsl_type::get_mul_type(op0
->type
, op1
->type
);
390 assert(op0
->type
== op1
->type
);
391 this->type
= op0
->type
;
396 case ir_binop_logic_and
:
397 case ir_binop_logic_xor
:
398 case ir_binop_logic_or
:
399 case ir_binop_bit_and
:
400 case ir_binop_bit_xor
:
401 case ir_binop_bit_or
:
402 assert(!op0
->type
->is_matrix());
403 assert(!op1
->type
->is_matrix());
404 if (op0
->type
->is_scalar()) {
405 this->type
= op1
->type
;
406 } else if (op1
->type
->is_scalar()) {
407 this->type
= op0
->type
;
409 assert(op0
->type
->vector_elements
== op1
->type
->vector_elements
);
410 this->type
= op0
->type
;
415 case ir_binop_nequal
:
416 case ir_binop_lequal
:
417 case ir_binop_gequal
:
419 case ir_binop_greater
:
420 assert(op0
->type
== op1
->type
);
421 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
,
422 op0
->type
->vector_elements
, 1);
426 this->type
= op0
->type
->get_base_type();
429 case ir_binop_imul_high
:
431 case ir_binop_borrow
:
432 case ir_binop_lshift
:
433 case ir_binop_rshift
:
435 case ir_binop_interpolate_at_offset
:
436 case ir_binop_interpolate_at_sample
:
437 this->type
= op0
->type
;
440 case ir_binop_vector_extract
:
441 this->type
= op0
->type
->get_scalar_type();
445 assert(!"not reached: missing automatic type setup for ir_expression");
446 this->type
= glsl_type::float_type
;
450 ir_expression::ir_expression(int op
, ir_rvalue
*op0
, ir_rvalue
*op1
,
452 : ir_rvalue(ir_type_expression
)
454 this->operation
= ir_expression_operation(op
);
455 this->operands
[0] = op0
;
456 this->operands
[1] = op1
;
457 this->operands
[2] = op2
;
458 this->operands
[3] = NULL
;
460 assert(op
> ir_last_binop
&& op
<= ir_last_triop
);
462 switch (this->operation
) {
465 case ir_triop_bitfield_extract
:
466 case ir_triop_vector_insert
:
467 this->type
= op0
->type
;
471 this->type
= op1
->type
;
475 assert(!"not reached: missing automatic type setup for ir_expression");
476 this->type
= glsl_type::float_type
;
481 ir_expression::get_num_operands(ir_expression_operation op
)
483 assert(op
<= ir_last_opcode
);
485 if (op
<= ir_last_unop
)
488 if (op
<= ir_last_binop
)
491 if (op
<= ir_last_triop
)
494 if (op
<= ir_last_quadop
)
501 #include "ir_expression_operation_strings.h"
504 depth_layout_string(ir_depth_layout layout
)
507 case ir_depth_layout_none
: return "";
508 case ir_depth_layout_any
: return "depth_any";
509 case ir_depth_layout_greater
: return "depth_greater";
510 case ir_depth_layout_less
: return "depth_less";
511 case ir_depth_layout_unchanged
: return "depth_unchanged";
519 ir_expression_operation
520 ir_expression::get_operator(const char *str
)
522 for (int op
= 0; op
<= int(ir_last_opcode
); op
++) {
523 if (strcmp(str
, ir_expression_operation_strings
[op
]) == 0)
524 return (ir_expression_operation
) op
;
526 return (ir_expression_operation
) -1;
530 ir_expression::variable_referenced() const
533 case ir_binop_vector_extract
:
534 case ir_triop_vector_insert
:
535 /* We get these for things like a[0] where a is a vector type. In these
536 * cases we want variable_referenced() to return the actual vector
537 * variable this is wrapping.
539 return operands
[0]->variable_referenced();
541 return ir_rvalue::variable_referenced();
545 ir_constant::ir_constant()
546 : ir_rvalue(ir_type_constant
)
548 this->array_elements
= NULL
;
551 ir_constant::ir_constant(const struct glsl_type
*type
,
552 const ir_constant_data
*data
)
553 : ir_rvalue(ir_type_constant
)
555 this->array_elements
= NULL
;
557 assert((type
->base_type
>= GLSL_TYPE_UINT
)
558 && (type
->base_type
<= GLSL_TYPE_BOOL
));
561 memcpy(& this->value
, data
, sizeof(this->value
));
564 ir_constant::ir_constant(float f
, unsigned vector_elements
)
565 : ir_rvalue(ir_type_constant
)
567 assert(vector_elements
<= 4);
568 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
, vector_elements
, 1);
569 for (unsigned i
= 0; i
< vector_elements
; i
++) {
570 this->value
.f
[i
] = f
;
572 for (unsigned i
= vector_elements
; i
< 16; i
++) {
573 this->value
.f
[i
] = 0;
577 ir_constant::ir_constant(double d
, unsigned vector_elements
)
578 : ir_rvalue(ir_type_constant
)
580 assert(vector_elements
<= 4);
581 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
, vector_elements
, 1);
582 for (unsigned i
= 0; i
< vector_elements
; i
++) {
583 this->value
.d
[i
] = d
;
585 for (unsigned i
= vector_elements
; i
< 16; i
++) {
586 this->value
.d
[i
] = 0.0;
590 ir_constant::ir_constant(unsigned int u
, unsigned vector_elements
)
591 : ir_rvalue(ir_type_constant
)
593 assert(vector_elements
<= 4);
594 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT
, vector_elements
, 1);
595 for (unsigned i
= 0; i
< vector_elements
; i
++) {
596 this->value
.u
[i
] = u
;
598 for (unsigned i
= vector_elements
; i
< 16; i
++) {
599 this->value
.u
[i
] = 0;
603 ir_constant::ir_constant(int integer
, unsigned vector_elements
)
604 : ir_rvalue(ir_type_constant
)
606 assert(vector_elements
<= 4);
607 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
, vector_elements
, 1);
608 for (unsigned i
= 0; i
< vector_elements
; i
++) {
609 this->value
.i
[i
] = integer
;
611 for (unsigned i
= vector_elements
; i
< 16; i
++) {
612 this->value
.i
[i
] = 0;
616 ir_constant::ir_constant(uint64_t u64
, unsigned vector_elements
)
617 : ir_rvalue(ir_type_constant
)
619 assert(vector_elements
<= 4);
620 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT64
, vector_elements
, 1);
621 for (unsigned i
= 0; i
< vector_elements
; i
++) {
622 this->value
.u64
[i
] = u64
;
624 for (unsigned i
= vector_elements
; i
< 16; i
++) {
625 this->value
.u64
[i
] = 0;
629 ir_constant::ir_constant(int64_t int64
, unsigned vector_elements
)
630 : ir_rvalue(ir_type_constant
)
632 assert(vector_elements
<= 4);
633 this->type
= glsl_type::get_instance(GLSL_TYPE_INT64
, vector_elements
, 1);
634 for (unsigned i
= 0; i
< vector_elements
; i
++) {
635 this->value
.i64
[i
] = int64
;
637 for (unsigned i
= vector_elements
; i
< 16; i
++) {
638 this->value
.i64
[i
] = 0;
642 ir_constant::ir_constant(bool b
, unsigned vector_elements
)
643 : ir_rvalue(ir_type_constant
)
645 assert(vector_elements
<= 4);
646 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
, vector_elements
, 1);
647 for (unsigned i
= 0; i
< vector_elements
; i
++) {
648 this->value
.b
[i
] = b
;
650 for (unsigned i
= vector_elements
; i
< 16; i
++) {
651 this->value
.b
[i
] = false;
655 ir_constant::ir_constant(const ir_constant
*c
, unsigned i
)
656 : ir_rvalue(ir_type_constant
)
658 this->array_elements
= NULL
;
659 this->type
= c
->type
->get_base_type();
661 switch (this->type
->base_type
) {
662 case GLSL_TYPE_UINT
: this->value
.u
[0] = c
->value
.u
[i
]; break;
663 case GLSL_TYPE_INT
: this->value
.i
[0] = c
->value
.i
[i
]; break;
664 case GLSL_TYPE_FLOAT
: this->value
.f
[0] = c
->value
.f
[i
]; break;
665 case GLSL_TYPE_BOOL
: this->value
.b
[0] = c
->value
.b
[i
]; break;
666 case GLSL_TYPE_DOUBLE
: this->value
.d
[0] = c
->value
.d
[i
]; break;
667 default: assert(!"Should not get here."); break;
671 ir_constant::ir_constant(const struct glsl_type
*type
, exec_list
*value_list
)
672 : ir_rvalue(ir_type_constant
)
674 this->array_elements
= NULL
;
677 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
678 || type
->is_record() || type
->is_array());
680 if (type
->is_array()) {
681 this->array_elements
= ralloc_array(this, ir_constant
*, type
->length
);
683 foreach_in_list(ir_constant
, value
, value_list
) {
684 assert(value
->as_constant() != NULL
);
686 this->array_elements
[i
++] = value
;
691 /* If the constant is a record, the types of each of the entries in
692 * value_list must be a 1-for-1 match with the structure components. Each
693 * entry must also be a constant. Just move the nodes from the value_list
694 * to the list in the ir_constant.
696 /* FINISHME: Should there be some type checking and / or assertions here? */
697 /* FINISHME: Should the new constant take ownership of the nodes from
698 * FINISHME: value_list, or should it make copies?
700 if (type
->is_record()) {
701 value_list
->move_nodes_to(& this->components
);
705 for (unsigned i
= 0; i
< 16; i
++) {
706 this->value
.u
[i
] = 0;
709 ir_constant
*value
= (ir_constant
*) (value_list
->get_head_raw());
711 /* Constructors with exactly one scalar argument are special for vectors
712 * and matrices. For vectors, the scalar value is replicated to fill all
713 * the components. For matrices, the scalar fills the components of the
714 * diagonal while the rest is filled with 0.
716 if (value
->type
->is_scalar() && value
->next
->is_tail_sentinel()) {
717 if (type
->is_matrix()) {
718 /* Matrix - fill diagonal (rest is already set to 0) */
719 assert(type
->base_type
== GLSL_TYPE_FLOAT
||
720 type
->base_type
== GLSL_TYPE_DOUBLE
);
721 for (unsigned i
= 0; i
< type
->matrix_columns
; i
++) {
722 if (type
->base_type
== GLSL_TYPE_FLOAT
)
723 this->value
.f
[i
* type
->vector_elements
+ i
] =
726 this->value
.d
[i
* type
->vector_elements
+ i
] =
730 /* Vector or scalar - fill all components */
731 switch (type
->base_type
) {
734 for (unsigned i
= 0; i
< type
->components(); i
++)
735 this->value
.u
[i
] = value
->value
.u
[0];
737 case GLSL_TYPE_FLOAT
:
738 for (unsigned i
= 0; i
< type
->components(); i
++)
739 this->value
.f
[i
] = value
->value
.f
[0];
741 case GLSL_TYPE_DOUBLE
:
742 for (unsigned i
= 0; i
< type
->components(); i
++)
743 this->value
.d
[i
] = value
->value
.d
[0];
745 case GLSL_TYPE_UINT64
:
746 case GLSL_TYPE_INT64
:
747 for (unsigned i
= 0; i
< type
->components(); i
++)
748 this->value
.u64
[i
] = value
->value
.u64
[0];
751 for (unsigned i
= 0; i
< type
->components(); i
++)
752 this->value
.b
[i
] = value
->value
.b
[0];
755 assert(!"Should not get here.");
762 if (type
->is_matrix() && value
->type
->is_matrix()) {
763 assert(value
->next
->is_tail_sentinel());
765 /* From section 5.4.2 of the GLSL 1.20 spec:
766 * "If a matrix is constructed from a matrix, then each component
767 * (column i, row j) in the result that has a corresponding component
768 * (column i, row j) in the argument will be initialized from there."
770 unsigned cols
= MIN2(type
->matrix_columns
, value
->type
->matrix_columns
);
771 unsigned rows
= MIN2(type
->vector_elements
, value
->type
->vector_elements
);
772 for (unsigned i
= 0; i
< cols
; i
++) {
773 for (unsigned j
= 0; j
< rows
; j
++) {
774 const unsigned src
= i
* value
->type
->vector_elements
+ j
;
775 const unsigned dst
= i
* type
->vector_elements
+ j
;
776 this->value
.f
[dst
] = value
->value
.f
[src
];
780 /* "All other components will be initialized to the identity matrix." */
781 for (unsigned i
= cols
; i
< type
->matrix_columns
; i
++)
782 this->value
.f
[i
* type
->vector_elements
+ i
] = 1.0;
787 /* Use each component from each entry in the value_list to initialize one
788 * component of the constant being constructed.
792 assert(value
->as_constant() != NULL
);
793 assert(!value
->is_tail_sentinel());
795 for (unsigned j
= 0; j
< value
->type
->components(); j
++) {
796 switch (type
->base_type
) {
798 this->value
.u
[i
] = value
->get_uint_component(j
);
801 this->value
.i
[i
] = value
->get_int_component(j
);
803 case GLSL_TYPE_FLOAT
:
804 this->value
.f
[i
] = value
->get_float_component(j
);
807 this->value
.b
[i
] = value
->get_bool_component(j
);
809 case GLSL_TYPE_DOUBLE
:
810 this->value
.d
[i
] = value
->get_double_component(j
);
812 case GLSL_TYPE_UINT64
:
813 this->value
.u64
[i
] = value
->get_uint64_component(j
);
815 case GLSL_TYPE_INT64
:
816 this->value
.i64
[i
] = value
->get_int64_component(j
);
819 /* FINISHME: What to do? Exceptions are not the answer.
825 if (i
>= type
->components())
829 if (i
>= type
->components())
830 break; /* avoid downcasting a list sentinel */
831 value
= (ir_constant
*) value
->next
;
836 ir_constant::zero(void *mem_ctx
, const glsl_type
*type
)
838 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
839 || type
->is_record() || type
->is_array());
841 ir_constant
*c
= new(mem_ctx
) ir_constant
;
843 memset(&c
->value
, 0, sizeof(c
->value
));
845 if (type
->is_array()) {
846 c
->array_elements
= ralloc_array(c
, ir_constant
*, type
->length
);
848 for (unsigned i
= 0; i
< type
->length
; i
++)
849 c
->array_elements
[i
] = ir_constant::zero(c
, type
->fields
.array
);
852 if (type
->is_record()) {
853 for (unsigned i
= 0; i
< type
->length
; i
++) {
854 ir_constant
*comp
= ir_constant::zero(mem_ctx
, type
->fields
.structure
[i
].type
);
855 c
->components
.push_tail(comp
);
863 ir_constant::get_bool_component(unsigned i
) const
865 switch (this->type
->base_type
) {
866 case GLSL_TYPE_UINT
: return this->value
.u
[i
] != 0;
867 case GLSL_TYPE_INT
: return this->value
.i
[i
] != 0;
868 case GLSL_TYPE_FLOAT
: return ((int)this->value
.f
[i
]) != 0;
869 case GLSL_TYPE_BOOL
: return this->value
.b
[i
];
870 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
] != 0.0;
871 case GLSL_TYPE_UINT64
: return this->value
.u64
[i
] != 0;
872 case GLSL_TYPE_INT64
: return this->value
.i64
[i
] != 0;
873 default: assert(!"Should not get here."); break;
876 /* Must return something to make the compiler happy. This is clearly an
883 ir_constant::get_float_component(unsigned i
) const
885 switch (this->type
->base_type
) {
886 case GLSL_TYPE_UINT
: return (float) this->value
.u
[i
];
887 case GLSL_TYPE_INT
: return (float) this->value
.i
[i
];
888 case GLSL_TYPE_FLOAT
: return this->value
.f
[i
];
889 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0f
: 0.0f
;
890 case GLSL_TYPE_DOUBLE
: return (float) this->value
.d
[i
];
891 case GLSL_TYPE_UINT64
: return (float) this->value
.u64
[i
];
892 case GLSL_TYPE_INT64
: return (float) this->value
.i64
[i
];
893 default: assert(!"Should not get here."); break;
896 /* Must return something to make the compiler happy. This is clearly an
903 ir_constant::get_double_component(unsigned i
) const
905 switch (this->type
->base_type
) {
906 case GLSL_TYPE_UINT
: return (double) this->value
.u
[i
];
907 case GLSL_TYPE_INT
: return (double) this->value
.i
[i
];
908 case GLSL_TYPE_FLOAT
: return (double) this->value
.f
[i
];
909 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0 : 0.0;
910 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
];
911 case GLSL_TYPE_UINT64
: return (double) this->value
.u64
[i
];
912 case GLSL_TYPE_INT64
: return (double) this->value
.i64
[i
];
913 default: assert(!"Should not get here."); break;
916 /* Must return something to make the compiler happy. This is clearly an
923 ir_constant::get_int_component(unsigned i
) const
925 switch (this->type
->base_type
) {
926 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
927 case GLSL_TYPE_INT
: return this->value
.i
[i
];
928 case GLSL_TYPE_FLOAT
: return (int) this->value
.f
[i
];
929 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
930 case GLSL_TYPE_DOUBLE
: return (int) this->value
.d
[i
];
931 case GLSL_TYPE_UINT64
: return (int) this->value
.u64
[i
];
932 case GLSL_TYPE_INT64
: return (int) this->value
.i64
[i
];
933 default: assert(!"Should not get here."); break;
936 /* Must return something to make the compiler happy. This is clearly an
943 ir_constant::get_uint_component(unsigned i
) const
945 switch (this->type
->base_type
) {
946 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
947 case GLSL_TYPE_INT
: return this->value
.i
[i
];
948 case GLSL_TYPE_FLOAT
: return (unsigned) this->value
.f
[i
];
949 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
950 case GLSL_TYPE_DOUBLE
: return (unsigned) this->value
.d
[i
];
951 case GLSL_TYPE_UINT64
: return (unsigned) this->value
.u64
[i
];
952 case GLSL_TYPE_INT64
: return (unsigned) this->value
.i64
[i
];
953 default: assert(!"Should not get here."); break;
956 /* Must return something to make the compiler happy. This is clearly an
963 ir_constant::get_int64_component(unsigned i
) const
965 switch (this->type
->base_type
) {
966 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
967 case GLSL_TYPE_INT
: return this->value
.i
[i
];
968 case GLSL_TYPE_FLOAT
: return (int64_t) this->value
.f
[i
];
969 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
970 case GLSL_TYPE_DOUBLE
: return (int64_t) this->value
.d
[i
];
971 case GLSL_TYPE_UINT64
: return (int64_t) this->value
.u64
[i
];
972 case GLSL_TYPE_INT64
: return this->value
.i64
[i
];
973 default: assert(!"Should not get here."); break;
976 /* Must return something to make the compiler happy. This is clearly an
983 ir_constant::get_uint64_component(unsigned i
) const
985 switch (this->type
->base_type
) {
986 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
987 case GLSL_TYPE_INT
: return this->value
.i
[i
];
988 case GLSL_TYPE_FLOAT
: return (uint64_t) this->value
.f
[i
];
989 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
990 case GLSL_TYPE_DOUBLE
: return (uint64_t) this->value
.d
[i
];
991 case GLSL_TYPE_UINT64
: return this->value
.u64
[i
];
992 case GLSL_TYPE_INT64
: return (uint64_t) this->value
.i64
[i
];
993 default: assert(!"Should not get here."); break;
996 /* Must return something to make the compiler happy. This is clearly an
1003 ir_constant::get_array_element(unsigned i
) const
1005 assert(this->type
->is_array());
1007 /* From page 35 (page 41 of the PDF) of the GLSL 1.20 spec:
1009 * "Behavior is undefined if a shader subscripts an array with an index
1010 * less than 0 or greater than or equal to the size the array was
1013 * Most out-of-bounds accesses are removed before things could get this far.
1014 * There are cases where non-constant array index values can get constant
1019 else if (i
>= this->type
->length
)
1020 i
= this->type
->length
- 1;
1022 return array_elements
[i
];
1026 ir_constant::get_record_field(const char *name
)
1028 int idx
= this->type
->field_index(name
);
1033 if (this->components
.is_empty())
1036 exec_node
*node
= this->components
.get_head_raw();
1037 for (int i
= 0; i
< idx
; i
++) {
1040 /* If the end of the list is encountered before the element matching the
1041 * requested field is found, return NULL.
1043 if (node
->is_tail_sentinel())
1047 return (ir_constant
*) node
;
1051 ir_constant::copy_offset(ir_constant
*src
, int offset
)
1053 switch (this->type
->base_type
) {
1054 case GLSL_TYPE_UINT
:
1056 case GLSL_TYPE_FLOAT
:
1057 case GLSL_TYPE_DOUBLE
:
1058 case GLSL_TYPE_UINT64
:
1059 case GLSL_TYPE_INT64
:
1060 case GLSL_TYPE_BOOL
: {
1061 unsigned int size
= src
->type
->components();
1062 assert (size
<= this->type
->components() - offset
);
1063 for (unsigned int i
=0; i
<size
; i
++) {
1064 switch (this->type
->base_type
) {
1065 case GLSL_TYPE_UINT
:
1066 value
.u
[i
+offset
] = src
->get_uint_component(i
);
1069 value
.i
[i
+offset
] = src
->get_int_component(i
);
1071 case GLSL_TYPE_FLOAT
:
1072 value
.f
[i
+offset
] = src
->get_float_component(i
);
1074 case GLSL_TYPE_BOOL
:
1075 value
.b
[i
+offset
] = src
->get_bool_component(i
);
1077 case GLSL_TYPE_DOUBLE
:
1078 value
.d
[i
+offset
] = src
->get_double_component(i
);
1080 case GLSL_TYPE_UINT64
:
1081 value
.u64
[i
+offset
] = src
->get_uint64_component(i
);
1083 case GLSL_TYPE_INT64
:
1084 value
.i64
[i
+offset
] = src
->get_int64_component(i
);
1086 default: // Shut up the compiler
1093 case GLSL_TYPE_STRUCT
: {
1094 assert (src
->type
== this->type
);
1095 this->components
.make_empty();
1096 foreach_in_list(ir_constant
, orig
, &src
->components
) {
1097 this->components
.push_tail(orig
->clone(this, NULL
));
1102 case GLSL_TYPE_ARRAY
: {
1103 assert (src
->type
== this->type
);
1104 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1105 this->array_elements
[i
] = src
->array_elements
[i
]->clone(this, NULL
);
1111 assert(!"Should not get here.");
1117 ir_constant::copy_masked_offset(ir_constant
*src
, int offset
, unsigned int mask
)
1119 assert (!type
->is_array() && !type
->is_record());
1121 if (!type
->is_vector() && !type
->is_matrix()) {
1127 for (int i
=0; i
<4; i
++) {
1128 if (mask
& (1 << i
)) {
1129 switch (this->type
->base_type
) {
1130 case GLSL_TYPE_UINT
:
1131 value
.u
[i
+offset
] = src
->get_uint_component(id
++);
1134 value
.i
[i
+offset
] = src
->get_int_component(id
++);
1136 case GLSL_TYPE_FLOAT
:
1137 value
.f
[i
+offset
] = src
->get_float_component(id
++);
1139 case GLSL_TYPE_BOOL
:
1140 value
.b
[i
+offset
] = src
->get_bool_component(id
++);
1142 case GLSL_TYPE_DOUBLE
:
1143 value
.d
[i
+offset
] = src
->get_double_component(id
++);
1145 case GLSL_TYPE_UINT64
:
1146 value
.u64
[i
+offset
] = src
->get_uint64_component(id
++);
1148 case GLSL_TYPE_INT64
:
1149 value
.i64
[i
+offset
] = src
->get_int64_component(id
++);
1152 assert(!"Should not get here.");
1160 ir_constant::has_value(const ir_constant
*c
) const
1162 if (this->type
!= c
->type
)
1165 if (this->type
->is_array()) {
1166 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1167 if (!this->array_elements
[i
]->has_value(c
->array_elements
[i
]))
1173 if (this->type
->base_type
== GLSL_TYPE_STRUCT
) {
1174 const exec_node
*a_node
= this->components
.get_head_raw();
1175 const exec_node
*b_node
= c
->components
.get_head_raw();
1177 while (!a_node
->is_tail_sentinel()) {
1178 assert(!b_node
->is_tail_sentinel());
1180 const ir_constant
*const a_field
= (ir_constant
*) a_node
;
1181 const ir_constant
*const b_field
= (ir_constant
*) b_node
;
1183 if (!a_field
->has_value(b_field
))
1186 a_node
= a_node
->next
;
1187 b_node
= b_node
->next
;
1193 for (unsigned i
= 0; i
< this->type
->components(); i
++) {
1194 switch (this->type
->base_type
) {
1195 case GLSL_TYPE_UINT
:
1196 if (this->value
.u
[i
] != c
->value
.u
[i
])
1200 if (this->value
.i
[i
] != c
->value
.i
[i
])
1203 case GLSL_TYPE_FLOAT
:
1204 if (this->value
.f
[i
] != c
->value
.f
[i
])
1207 case GLSL_TYPE_BOOL
:
1208 if (this->value
.b
[i
] != c
->value
.b
[i
])
1211 case GLSL_TYPE_DOUBLE
:
1212 if (this->value
.d
[i
] != c
->value
.d
[i
])
1215 case GLSL_TYPE_UINT64
:
1216 if (this->value
.u64
[i
] != c
->value
.u64
[i
])
1219 case GLSL_TYPE_INT64
:
1220 if (this->value
.i64
[i
] != c
->value
.i64
[i
])
1224 assert(!"Should not get here.");
1233 ir_constant::is_value(float f
, int i
) const
1235 if (!this->type
->is_scalar() && !this->type
->is_vector())
1238 /* Only accept boolean values for 0/1. */
1239 if (int(bool(i
)) != i
&& this->type
->is_boolean())
1242 for (unsigned c
= 0; c
< this->type
->vector_elements
; c
++) {
1243 switch (this->type
->base_type
) {
1244 case GLSL_TYPE_FLOAT
:
1245 if (this->value
.f
[c
] != f
)
1249 if (this->value
.i
[c
] != i
)
1252 case GLSL_TYPE_UINT
:
1253 if (this->value
.u
[c
] != unsigned(i
))
1256 case GLSL_TYPE_BOOL
:
1257 if (this->value
.b
[c
] != bool(i
))
1260 case GLSL_TYPE_DOUBLE
:
1261 if (this->value
.d
[c
] != double(f
))
1264 case GLSL_TYPE_UINT64
:
1265 if (this->value
.u64
[c
] != uint64_t(i
))
1268 case GLSL_TYPE_INT64
:
1269 if (this->value
.i64
[c
] != i
)
1273 /* The only other base types are structures, arrays, and samplers.
1274 * Samplers cannot be constants, and the others should have been
1275 * filtered out above.
1277 assert(!"Should not get here.");
1286 ir_constant::is_zero() const
1288 return is_value(0.0, 0);
1292 ir_constant::is_one() const
1294 return is_value(1.0, 1);
1298 ir_constant::is_negative_one() const
1300 return is_value(-1.0, -1);
1304 ir_constant::is_uint16_constant() const
1306 if (!type
->is_integer())
1309 return value
.u
[0] < (1 << 16);
1313 : ir_instruction(ir_type_loop
)
1318 ir_dereference_variable::ir_dereference_variable(ir_variable
*var
)
1319 : ir_dereference(ir_type_dereference_variable
)
1321 assert(var
!= NULL
);
1324 this->type
= var
->type
;
1328 ir_dereference_array::ir_dereference_array(ir_rvalue
*value
,
1329 ir_rvalue
*array_index
)
1330 : ir_dereference(ir_type_dereference_array
)
1332 this->array_index
= array_index
;
1333 this->set_array(value
);
1337 ir_dereference_array::ir_dereference_array(ir_variable
*var
,
1338 ir_rvalue
*array_index
)
1339 : ir_dereference(ir_type_dereference_array
)
1341 void *ctx
= ralloc_parent(var
);
1343 this->array_index
= array_index
;
1344 this->set_array(new(ctx
) ir_dereference_variable(var
));
1349 ir_dereference_array::set_array(ir_rvalue
*value
)
1351 assert(value
!= NULL
);
1353 this->array
= value
;
1355 const glsl_type
*const vt
= this->array
->type
;
1357 if (vt
->is_array()) {
1358 type
= vt
->fields
.array
;
1359 } else if (vt
->is_matrix()) {
1360 type
= vt
->column_type();
1361 } else if (vt
->is_vector()) {
1362 type
= vt
->get_base_type();
1367 ir_dereference_record::ir_dereference_record(ir_rvalue
*value
,
1369 : ir_dereference(ir_type_dereference_record
)
1371 assert(value
!= NULL
);
1373 this->record
= value
;
1374 this->field
= ralloc_strdup(this, field
);
1375 this->type
= this->record
->type
->field_type(field
);
1379 ir_dereference_record::ir_dereference_record(ir_variable
*var
,
1381 : ir_dereference(ir_type_dereference_record
)
1383 void *ctx
= ralloc_parent(var
);
1385 this->record
= new(ctx
) ir_dereference_variable(var
);
1386 this->field
= ralloc_strdup(this, field
);
1387 this->type
= this->record
->type
->field_type(field
);
1391 ir_dereference::is_lvalue() const
1393 ir_variable
*var
= this->variable_referenced();
1395 /* Every l-value derference chain eventually ends in a variable.
1397 if ((var
== NULL
) || var
->data
.read_only
)
1400 /* From section 4.1.7 of the GLSL 4.40 spec:
1402 * "Opaque variables cannot be treated as l-values; hence cannot
1403 * be used as out or inout function parameters, nor can they be
1406 if (this->type
->contains_opaque())
1413 static const char * const tex_opcode_strs
[] = { "tex", "txb", "txl", "txd", "txf", "txf_ms", "txs", "lod", "tg4", "query_levels", "texture_samples", "samples_identical" };
1415 const char *ir_texture::opcode_string()
1417 assert((unsigned int) op
< ARRAY_SIZE(tex_opcode_strs
));
1418 return tex_opcode_strs
[op
];
1422 ir_texture::get_opcode(const char *str
)
1424 const int count
= sizeof(tex_opcode_strs
) / sizeof(tex_opcode_strs
[0]);
1425 for (int op
= 0; op
< count
; op
++) {
1426 if (strcmp(str
, tex_opcode_strs
[op
]) == 0)
1427 return (ir_texture_opcode
) op
;
1429 return (ir_texture_opcode
) -1;
1434 ir_texture::set_sampler(ir_dereference
*sampler
, const glsl_type
*type
)
1436 assert(sampler
!= NULL
);
1437 assert(type
!= NULL
);
1438 this->sampler
= sampler
;
1441 if (this->op
== ir_txs
|| this->op
== ir_query_levels
||
1442 this->op
== ir_texture_samples
) {
1443 assert(type
->base_type
== GLSL_TYPE_INT
);
1444 } else if (this->op
== ir_lod
) {
1445 assert(type
->vector_elements
== 2);
1446 assert(type
->base_type
== GLSL_TYPE_FLOAT
);
1447 } else if (this->op
== ir_samples_identical
) {
1448 assert(type
== glsl_type::bool_type
);
1449 assert(sampler
->type
->base_type
== GLSL_TYPE_SAMPLER
);
1450 assert(sampler
->type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
);
1452 assert(sampler
->type
->sampled_type
== (int) type
->base_type
);
1453 if (sampler
->type
->sampler_shadow
)
1454 assert(type
->vector_elements
== 4 || type
->vector_elements
== 1);
1456 assert(type
->vector_elements
== 4);
1462 ir_swizzle::init_mask(const unsigned *comp
, unsigned count
)
1464 assert((count
>= 1) && (count
<= 4));
1466 memset(&this->mask
, 0, sizeof(this->mask
));
1467 this->mask
.num_components
= count
;
1469 unsigned dup_mask
= 0;
1472 assert(comp
[3] <= 3);
1473 dup_mask
|= (1U << comp
[3])
1474 & ((1U << comp
[0]) | (1U << comp
[1]) | (1U << comp
[2]));
1475 this->mask
.w
= comp
[3];
1478 assert(comp
[2] <= 3);
1479 dup_mask
|= (1U << comp
[2])
1480 & ((1U << comp
[0]) | (1U << comp
[1]));
1481 this->mask
.z
= comp
[2];
1484 assert(comp
[1] <= 3);
1485 dup_mask
|= (1U << comp
[1])
1486 & ((1U << comp
[0]));
1487 this->mask
.y
= comp
[1];
1490 assert(comp
[0] <= 3);
1491 this->mask
.x
= comp
[0];
1494 this->mask
.has_duplicates
= dup_mask
!= 0;
1496 /* Based on the number of elements in the swizzle and the base type
1497 * (i.e., float, int, unsigned, or bool) of the vector being swizzled,
1498 * generate the type of the resulting value.
1500 type
= glsl_type::get_instance(val
->type
->base_type
, mask
.num_components
, 1);
1503 ir_swizzle::ir_swizzle(ir_rvalue
*val
, unsigned x
, unsigned y
, unsigned z
,
1504 unsigned w
, unsigned count
)
1505 : ir_rvalue(ir_type_swizzle
), val(val
)
1507 const unsigned components
[4] = { x
, y
, z
, w
};
1508 this->init_mask(components
, count
);
1511 ir_swizzle::ir_swizzle(ir_rvalue
*val
, const unsigned *comp
,
1513 : ir_rvalue(ir_type_swizzle
), val(val
)
1515 this->init_mask(comp
, count
);
1518 ir_swizzle::ir_swizzle(ir_rvalue
*val
, ir_swizzle_mask mask
)
1519 : ir_rvalue(ir_type_swizzle
)
1523 this->type
= glsl_type::get_instance(val
->type
->base_type
,
1524 mask
.num_components
, 1);
1533 ir_swizzle::create(ir_rvalue
*val
, const char *str
, unsigned vector_length
)
1535 void *ctx
= ralloc_parent(val
);
1537 /* For each possible swizzle character, this table encodes the value in
1538 * \c idx_map that represents the 0th element of the vector. For invalid
1539 * swizzle characters (e.g., 'k'), a special value is used that will allow
1540 * detection of errors.
1542 static const unsigned char base_idx
[26] = {
1543 /* a b c d e f g h i j k l m */
1544 R
, R
, I
, I
, I
, I
, R
, I
, I
, I
, I
, I
, I
,
1545 /* n o p q r s t u v w x y z */
1546 I
, I
, S
, S
, R
, S
, S
, I
, I
, X
, X
, X
, X
1549 /* Each valid swizzle character has an entry in the previous table. This
1550 * table encodes the base index encoded in the previous table plus the actual
1551 * index of the swizzle character. When processing swizzles, the first
1552 * character in the string is indexed in the previous table. Each character
1553 * in the string is indexed in this table, and the value found there has the
1554 * value form the first table subtracted. The result must be on the range
1557 * For example, the string "wzyx" will get X from the first table. Each of
1558 * the charcaters will get X+3, X+2, X+1, and X+0 from this table. After
1559 * subtraction, the swizzle values are { 3, 2, 1, 0 }.
1561 * The string "wzrg" will get X from the first table. Each of the characters
1562 * will get X+3, X+2, R+0, and R+1 from this table. After subtraction, the
1563 * swizzle values are { 3, 2, 4, 5 }. Since 4 and 5 are outside the range
1564 * [0,3], the error is detected.
1566 static const unsigned char idx_map
[26] = {
1567 /* a b c d e f g h i j k l m */
1568 R
+3, R
+2, 0, 0, 0, 0, R
+1, 0, 0, 0, 0, 0, 0,
1569 /* n o p q r s t u v w x y z */
1570 0, 0, S
+2, S
+3, R
+0, S
+0, S
+1, 0, 0, X
+3, X
+0, X
+1, X
+2
1573 int swiz_idx
[4] = { 0, 0, 0, 0 };
1577 /* Validate the first character in the swizzle string and look up the base
1578 * index value as described above.
1580 if ((str
[0] < 'a') || (str
[0] > 'z'))
1583 const unsigned base
= base_idx
[str
[0] - 'a'];
1586 for (i
= 0; (i
< 4) && (str
[i
] != '\0'); i
++) {
1587 /* Validate the next character, and, as described above, convert it to a
1590 if ((str
[i
] < 'a') || (str
[i
] > 'z'))
1593 swiz_idx
[i
] = idx_map
[str
[i
] - 'a'] - base
;
1594 if ((swiz_idx
[i
] < 0) || (swiz_idx
[i
] >= (int) vector_length
))
1601 return new(ctx
) ir_swizzle(val
, swiz_idx
[0], swiz_idx
[1], swiz_idx
[2],
1611 ir_swizzle::variable_referenced() const
1613 return this->val
->variable_referenced();
1617 bool ir_variable::temporaries_allocate_names
= false;
1619 const char ir_variable::tmp_name
[] = "compiler_temp";
1621 ir_variable::ir_variable(const struct glsl_type
*type
, const char *name
,
1622 ir_variable_mode mode
)
1623 : ir_instruction(ir_type_variable
)
1627 if (mode
== ir_var_temporary
&& !ir_variable::temporaries_allocate_names
)
1630 /* The ir_variable clone method may call this constructor with name set to
1634 || mode
== ir_var_temporary
1635 || mode
== ir_var_function_in
1636 || mode
== ir_var_function_out
1637 || mode
== ir_var_function_inout
);
1638 assert(name
!= ir_variable::tmp_name
1639 || mode
== ir_var_temporary
);
1640 if (mode
== ir_var_temporary
1641 && (name
== NULL
|| name
== ir_variable::tmp_name
)) {
1642 this->name
= ir_variable::tmp_name
;
1643 } else if (name
== NULL
||
1644 strlen(name
) < ARRAY_SIZE(this->name_storage
)) {
1645 strcpy(this->name_storage
, name
? name
: "");
1646 this->name
= this->name_storage
;
1648 this->name
= ralloc_strdup(this, name
);
1651 this->u
.max_ifc_array_access
= NULL
;
1653 this->data
.explicit_location
= false;
1654 this->data
.has_initializer
= false;
1655 this->data
.location
= -1;
1656 this->data
.location_frac
= 0;
1657 this->data
.binding
= 0;
1658 this->data
.warn_extension_index
= 0;
1659 this->constant_value
= NULL
;
1660 this->constant_initializer
= NULL
;
1661 this->data
.origin_upper_left
= false;
1662 this->data
.pixel_center_integer
= false;
1663 this->data
.depth_layout
= ir_depth_layout_none
;
1664 this->data
.used
= false;
1665 this->data
.always_active_io
= false;
1666 this->data
.read_only
= false;
1667 this->data
.centroid
= false;
1668 this->data
.sample
= false;
1669 this->data
.patch
= false;
1670 this->data
.invariant
= false;
1671 this->data
.how_declared
= ir_var_declared_normally
;
1672 this->data
.mode
= mode
;
1673 this->data
.interpolation
= INTERP_MODE_NONE
;
1674 this->data
.max_array_access
= -1;
1675 this->data
.offset
= 0;
1676 this->data
.precision
= GLSL_PRECISION_NONE
;
1677 this->data
.image_read_only
= false;
1678 this->data
.image_write_only
= false;
1679 this->data
.image_coherent
= false;
1680 this->data
.image_volatile
= false;
1681 this->data
.image_restrict
= false;
1682 this->data
.from_ssbo_unsized_array
= false;
1683 this->data
.fb_fetch_output
= false;
1686 if (type
->base_type
== GLSL_TYPE_SAMPLER
)
1687 this->data
.read_only
= true;
1689 if (type
->is_interface())
1690 this->init_interface_type(type
);
1691 else if (type
->without_array()->is_interface())
1692 this->init_interface_type(type
->without_array());
1698 interpolation_string(unsigned interpolation
)
1700 switch (interpolation
) {
1701 case INTERP_MODE_NONE
: return "no";
1702 case INTERP_MODE_SMOOTH
: return "smooth";
1703 case INTERP_MODE_FLAT
: return "flat";
1704 case INTERP_MODE_NOPERSPECTIVE
: return "noperspective";
1707 assert(!"Should not get here.");
1711 const char *const ir_variable::warn_extension_table
[] = {
1713 "GL_ARB_shader_stencil_export",
1714 "GL_AMD_shader_stencil_export",
1718 ir_variable::enable_extension_warning(const char *extension
)
1720 for (unsigned i
= 0; i
< ARRAY_SIZE(warn_extension_table
); i
++) {
1721 if (strcmp(warn_extension_table
[i
], extension
) == 0) {
1722 this->data
.warn_extension_index
= i
;
1727 assert(!"Should not get here.");
1728 this->data
.warn_extension_index
= 0;
1732 ir_variable::get_extension_warning() const
1734 return this->data
.warn_extension_index
== 0
1735 ? NULL
: warn_extension_table
[this->data
.warn_extension_index
];
1738 ir_function_signature::ir_function_signature(const glsl_type
*return_type
,
1739 builtin_available_predicate b
)
1740 : ir_instruction(ir_type_function_signature
),
1741 return_type(return_type
), is_defined(false),
1742 intrinsic_id(ir_intrinsic_invalid
), builtin_avail(b
), _function(NULL
)
1744 this->origin
= NULL
;
1749 ir_function_signature::is_builtin() const
1751 return builtin_avail
!= NULL
;
1756 ir_function_signature::is_builtin_available(const _mesa_glsl_parse_state
*state
) const
1758 /* We can't call the predicate without a state pointer, so just say that
1759 * the signature is available. At compile time, we need the filtering,
1760 * but also receive a valid state pointer. At link time, we're resolving
1761 * imported built-in prototypes to their definitions, which will always
1762 * be an exact match. So we can skip the filtering.
1767 assert(builtin_avail
!= NULL
);
1768 return builtin_avail(state
);
1773 modes_match(unsigned a
, unsigned b
)
1778 /* Accept "in" vs. "const in" */
1779 if ((a
== ir_var_const_in
&& b
== ir_var_function_in
) ||
1780 (b
== ir_var_const_in
&& a
== ir_var_function_in
))
1788 ir_function_signature::qualifiers_match(exec_list
*params
)
1790 /* check that the qualifiers match. */
1791 foreach_two_lists(a_node
, &this->parameters
, b_node
, params
) {
1792 ir_variable
*a
= (ir_variable
*) a_node
;
1793 ir_variable
*b
= (ir_variable
*) b_node
;
1795 if (a
->data
.read_only
!= b
->data
.read_only
||
1796 !modes_match(a
->data
.mode
, b
->data
.mode
) ||
1797 a
->data
.interpolation
!= b
->data
.interpolation
||
1798 a
->data
.centroid
!= b
->data
.centroid
||
1799 a
->data
.sample
!= b
->data
.sample
||
1800 a
->data
.patch
!= b
->data
.patch
||
1801 a
->data
.image_read_only
!= b
->data
.image_read_only
||
1802 a
->data
.image_write_only
!= b
->data
.image_write_only
||
1803 a
->data
.image_coherent
!= b
->data
.image_coherent
||
1804 a
->data
.image_volatile
!= b
->data
.image_volatile
||
1805 a
->data
.image_restrict
!= b
->data
.image_restrict
) {
1807 /* parameter a's qualifiers don't match */
1816 ir_function_signature::replace_parameters(exec_list
*new_params
)
1818 /* Destroy all of the previous parameter information. If the previous
1819 * parameter information comes from the function prototype, it may either
1820 * specify incorrect parameter names or not have names at all.
1822 new_params
->move_nodes_to(¶meters
);
1826 ir_function::ir_function(const char *name
)
1827 : ir_instruction(ir_type_function
)
1829 this->subroutine_index
= -1;
1830 this->name
= ralloc_strdup(this, name
);
1835 ir_function::has_user_signature()
1837 foreach_in_list(ir_function_signature
, sig
, &this->signatures
) {
1838 if (!sig
->is_builtin())
1846 ir_rvalue::error_value(void *mem_ctx
)
1848 ir_rvalue
*v
= new(mem_ctx
) ir_rvalue(ir_type_unset
);
1850 v
->type
= glsl_type::error_type
;
1856 visit_exec_list(exec_list
*list
, ir_visitor
*visitor
)
1858 foreach_in_list_safe(ir_instruction
, node
, list
) {
1859 node
->accept(visitor
);
1865 steal_memory(ir_instruction
*ir
, void *new_ctx
)
1867 ir_variable
*var
= ir
->as_variable();
1868 ir_function
*fn
= ir
->as_function();
1869 ir_constant
*constant
= ir
->as_constant();
1870 if (var
!= NULL
&& var
->constant_value
!= NULL
)
1871 steal_memory(var
->constant_value
, ir
);
1873 if (var
!= NULL
&& var
->constant_initializer
!= NULL
)
1874 steal_memory(var
->constant_initializer
, ir
);
1876 if (fn
!= NULL
&& fn
->subroutine_types
)
1877 ralloc_steal(new_ctx
, fn
->subroutine_types
);
1879 /* The components of aggregate constants are not visited by the normal
1880 * visitor, so steal their values by hand.
1882 if (constant
!= NULL
) {
1883 if (constant
->type
->is_record()) {
1884 foreach_in_list(ir_constant
, field
, &constant
->components
) {
1885 steal_memory(field
, ir
);
1887 } else if (constant
->type
->is_array()) {
1888 for (unsigned int i
= 0; i
< constant
->type
->length
; i
++) {
1889 steal_memory(constant
->array_elements
[i
], ir
);
1894 ralloc_steal(new_ctx
, ir
);
1899 reparent_ir(exec_list
*list
, void *mem_ctx
)
1901 foreach_in_list(ir_instruction
, node
, list
) {
1902 visit_tree(node
, steal_memory
, mem_ctx
);
1908 try_min_one(ir_rvalue
*ir
)
1910 ir_expression
*expr
= ir
->as_expression();
1912 if (!expr
|| expr
->operation
!= ir_binop_min
)
1915 if (expr
->operands
[0]->is_one())
1916 return expr
->operands
[1];
1918 if (expr
->operands
[1]->is_one())
1919 return expr
->operands
[0];
1925 try_max_zero(ir_rvalue
*ir
)
1927 ir_expression
*expr
= ir
->as_expression();
1929 if (!expr
|| expr
->operation
!= ir_binop_max
)
1932 if (expr
->operands
[0]->is_zero())
1933 return expr
->operands
[1];
1935 if (expr
->operands
[1]->is_zero())
1936 return expr
->operands
[0];
1942 ir_rvalue::as_rvalue_to_saturate()
1944 ir_expression
*expr
= this->as_expression();
1949 ir_rvalue
*max_zero
= try_max_zero(expr
);
1951 return try_min_one(max_zero
);
1953 ir_rvalue
*min_one
= try_min_one(expr
);
1955 return try_max_zero(min_one
);
1964 vertices_per_prim(GLenum prim
)
1973 case GL_LINES_ADJACENCY
:
1975 case GL_TRIANGLES_ADJACENCY
:
1978 assert(!"Bad primitive");
1984 * Generate a string describing the mode of a variable
1987 mode_string(const ir_variable
*var
)
1989 switch (var
->data
.mode
) {
1991 return (var
->data
.read_only
) ? "global constant" : "global variable";
1993 case ir_var_uniform
:
1996 case ir_var_shader_storage
:
1999 case ir_var_shader_in
:
2000 return "shader input";
2002 case ir_var_shader_out
:
2003 return "shader output";
2005 case ir_var_function_in
:
2006 case ir_var_const_in
:
2007 return "function input";
2009 case ir_var_function_out
:
2010 return "function output";
2012 case ir_var_function_inout
:
2013 return "function inout";
2015 case ir_var_system_value
:
2016 return "shader input";
2018 case ir_var_temporary
:
2019 return "compiler temporary";
2021 case ir_var_mode_count
:
2025 assert(!"Should not get here.");
2026 return "invalid variable";