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.
25 #include "util/half_float.h"
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
;
209 for (unsigned i
= num_operands
; i
< 4; i
++) {
210 assert(this->operands
[i
] == NULL
);
213 for (unsigned i
= 0; i
< num_operands
; i
++) {
214 assert(this->operands
[i
] != NULL
);
219 ir_expression::ir_expression(int op
, ir_rvalue
*op0
)
220 : ir_rvalue(ir_type_expression
)
222 this->operation
= ir_expression_operation(op
);
223 this->operands
[0] = op0
;
224 this->operands
[1] = NULL
;
225 this->operands
[2] = NULL
;
226 this->operands
[3] = NULL
;
228 assert(op
<= ir_last_unop
);
230 assert(num_operands
== 1);
231 assert(this->operands
[0]);
233 switch (this->operation
) {
234 case ir_unop_bit_not
:
235 case ir_unop_logic_not
:
250 case ir_unop_round_even
:
254 case ir_unop_dFdx_coarse
:
255 case ir_unop_dFdx_fine
:
257 case ir_unop_dFdy_coarse
:
258 case ir_unop_dFdy_fine
:
259 case ir_unop_bitfield_reverse
:
260 case ir_unop_interpolate_at_centroid
:
262 case ir_unop_saturate
:
264 this->type
= op0
->type
;
271 case ir_unop_bitcast_f2i
:
272 case ir_unop_bit_count
:
273 case ir_unop_find_msb
:
274 case ir_unop_find_lsb
:
275 case ir_unop_subroutine_to_int
:
278 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
,
279 op0
->type
->vector_elements
, 1);
287 case ir_unop_bitcast_i2f
:
288 case ir_unop_bitcast_u2f
:
291 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
,
292 op0
->type
->vector_elements
, 1);
298 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT16
,
299 op0
->type
->vector_elements
, 1);
303 this->type
= glsl_type::get_instance(GLSL_TYPE_INT16
,
304 op0
->type
->vector_elements
, 1);
308 if (op0
->type
->base_type
== GLSL_TYPE_INT
) {
309 this->type
= glsl_type::get_instance(GLSL_TYPE_INT16
,
310 op0
->type
->vector_elements
, 1);
312 assert(op0
->type
->base_type
== GLSL_TYPE_INT16
);
313 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
,
314 op0
->type
->vector_elements
, 1);
319 if (op0
->type
->base_type
== GLSL_TYPE_UINT
) {
320 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT16
,
321 op0
->type
->vector_elements
, 1);
323 assert(op0
->type
->base_type
== GLSL_TYPE_UINT16
);
324 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT
,
325 op0
->type
->vector_elements
, 1);
330 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT16
,
331 op0
->type
->vector_elements
, 1);
339 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
,
340 op0
->type
->vector_elements
, 1);
348 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
,
349 op0
->type
->vector_elements
, 1);
355 case ir_unop_bitcast_f2u
:
358 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT
,
359 op0
->type
->vector_elements
, 1);
367 case ir_unop_u642i64
:
368 this->type
= glsl_type::get_instance(GLSL_TYPE_INT64
,
369 op0
->type
->vector_elements
, 1);
376 case ir_unop_i642u64
:
377 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT64
,
378 op0
->type
->vector_elements
, 1);
381 case ir_unop_unpack_double_2x32
:
382 case ir_unop_unpack_uint_2x32
:
383 this->type
= glsl_type::uvec2_type
;
386 case ir_unop_unpack_int_2x32
:
387 this->type
= glsl_type::ivec2_type
;
390 case ir_unop_pack_snorm_2x16
:
391 case ir_unop_pack_snorm_4x8
:
392 case ir_unop_pack_unorm_2x16
:
393 case ir_unop_pack_unorm_4x8
:
394 case ir_unop_pack_half_2x16
:
395 this->type
= glsl_type::uint_type
;
398 case ir_unop_pack_double_2x32
:
399 this->type
= glsl_type::double_type
;
402 case ir_unop_pack_int_2x32
:
403 this->type
= glsl_type::int64_t_type
;
406 case ir_unop_pack_uint_2x32
:
407 this->type
= glsl_type::uint64_t_type
;
410 case ir_unop_unpack_snorm_2x16
:
411 case ir_unop_unpack_unorm_2x16
:
412 case ir_unop_unpack_half_2x16
:
413 this->type
= glsl_type::vec2_type
;
416 case ir_unop_unpack_snorm_4x8
:
417 case ir_unop_unpack_unorm_4x8
:
418 this->type
= glsl_type::vec4_type
;
421 case ir_unop_unpack_sampler_2x32
:
422 case ir_unop_unpack_image_2x32
:
423 this->type
= glsl_type::uvec2_type
;
426 case ir_unop_pack_sampler_2x32
:
427 case ir_unop_pack_image_2x32
:
428 this->type
= op0
->type
;
431 case ir_unop_frexp_sig
:
432 this->type
= op0
->type
;
434 case ir_unop_frexp_exp
:
435 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
,
436 op0
->type
->vector_elements
, 1);
439 case ir_unop_get_buffer_size
:
440 case ir_unop_ssbo_unsized_array_length
:
441 this->type
= glsl_type::int_type
;
444 case ir_unop_bitcast_i642d
:
445 case ir_unop_bitcast_u642d
:
446 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
,
447 op0
->type
->vector_elements
, 1);
450 case ir_unop_bitcast_d2i64
:
451 this->type
= glsl_type::get_instance(GLSL_TYPE_INT64
,
452 op0
->type
->vector_elements
, 1);
454 case ir_unop_bitcast_d2u64
:
455 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT64
,
456 op0
->type
->vector_elements
, 1);
460 assert(!"not reached: missing automatic type setup for ir_expression");
461 this->type
= op0
->type
;
466 ir_expression::ir_expression(int op
, ir_rvalue
*op0
, ir_rvalue
*op1
)
467 : ir_rvalue(ir_type_expression
)
469 this->operation
= ir_expression_operation(op
);
470 this->operands
[0] = op0
;
471 this->operands
[1] = op1
;
472 this->operands
[2] = NULL
;
473 this->operands
[3] = NULL
;
475 assert(op
> ir_last_unop
);
477 assert(num_operands
== 2);
478 for (unsigned i
= 0; i
< num_operands
; i
++) {
479 assert(this->operands
[i
] != NULL
);
482 switch (this->operation
) {
483 case ir_binop_all_equal
:
484 case ir_binop_any_nequal
:
485 this->type
= glsl_type::bool_type
;
497 if (op0
->type
->is_scalar()) {
498 this->type
= op1
->type
;
499 } else if (op1
->type
->is_scalar()) {
500 this->type
= op0
->type
;
502 if (this->operation
== ir_binop_mul
) {
503 this->type
= glsl_type::get_mul_type(op0
->type
, op1
->type
);
505 assert(op0
->type
== op1
->type
);
506 this->type
= op0
->type
;
511 case ir_binop_logic_and
:
512 case ir_binop_logic_xor
:
513 case ir_binop_logic_or
:
514 case ir_binop_bit_and
:
515 case ir_binop_bit_xor
:
516 case ir_binop_bit_or
:
517 assert(!op0
->type
->is_matrix());
518 assert(!op1
->type
->is_matrix());
519 if (op0
->type
->is_scalar()) {
520 this->type
= op1
->type
;
521 } else if (op1
->type
->is_scalar()) {
522 this->type
= op0
->type
;
524 assert(op0
->type
->vector_elements
== op1
->type
->vector_elements
);
525 this->type
= op0
->type
;
530 case ir_binop_nequal
:
531 case ir_binop_gequal
:
533 assert(op0
->type
== op1
->type
);
534 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
,
535 op0
->type
->vector_elements
, 1);
539 this->type
= op0
->type
->get_base_type();
542 case ir_binop_imul_high
:
543 case ir_binop_mul_32x16
:
545 case ir_binop_borrow
:
546 case ir_binop_lshift
:
547 case ir_binop_rshift
:
549 case ir_binop_interpolate_at_offset
:
550 case ir_binop_interpolate_at_sample
:
551 this->type
= op0
->type
;
554 case ir_binop_add_sat
:
555 case ir_binop_sub_sat
:
557 case ir_binop_avg_round
:
558 assert(op0
->type
== op1
->type
);
559 this->type
= op0
->type
;
562 case ir_binop_abs_sub
: {
563 enum glsl_base_type base
;
565 assert(op0
->type
== op1
->type
);
567 switch (op0
->type
->base_type
) {
570 base
= GLSL_TYPE_UINT
;
572 case GLSL_TYPE_UINT8
:
574 base
= GLSL_TYPE_UINT8
;
576 case GLSL_TYPE_UINT16
:
577 case GLSL_TYPE_INT16
:
578 base
= GLSL_TYPE_UINT16
;
580 case GLSL_TYPE_UINT64
:
581 case GLSL_TYPE_INT64
:
582 base
= GLSL_TYPE_UINT64
;
585 unreachable(!"Invalid base type.");
588 this->type
= glsl_type::get_instance(base
, op0
->type
->vector_elements
, 1);
592 case ir_binop_vector_extract
:
593 this->type
= op0
->type
->get_scalar_type();
597 assert(!"not reached: missing automatic type setup for ir_expression");
598 this->type
= glsl_type::float_type
;
602 ir_expression::ir_expression(int op
, ir_rvalue
*op0
, ir_rvalue
*op1
,
604 : ir_rvalue(ir_type_expression
)
606 this->operation
= ir_expression_operation(op
);
607 this->operands
[0] = op0
;
608 this->operands
[1] = op1
;
609 this->operands
[2] = op2
;
610 this->operands
[3] = NULL
;
612 assert(op
> ir_last_binop
&& op
<= ir_last_triop
);
614 assert(num_operands
== 3);
615 for (unsigned i
= 0; i
< num_operands
; i
++) {
616 assert(this->operands
[i
] != NULL
);
619 switch (this->operation
) {
622 case ir_triop_bitfield_extract
:
623 case ir_triop_vector_insert
:
624 this->type
= op0
->type
;
628 this->type
= op1
->type
;
632 assert(!"not reached: missing automatic type setup for ir_expression");
633 this->type
= glsl_type::float_type
;
638 * This is only here for ir_reader to used for testing purposes. Please use
639 * the precomputed num_operands field if you need the number of operands.
642 ir_expression::get_num_operands(ir_expression_operation op
)
644 assert(op
<= ir_last_opcode
);
646 if (op
<= ir_last_unop
)
649 if (op
<= ir_last_binop
)
652 if (op
<= ir_last_triop
)
655 if (op
<= ir_last_quadop
)
658 unreachable("Could not calculate number of operands");
661 #include "ir_expression_operation_strings.h"
664 depth_layout_string(ir_depth_layout layout
)
667 case ir_depth_layout_none
: return "";
668 case ir_depth_layout_any
: return "depth_any";
669 case ir_depth_layout_greater
: return "depth_greater";
670 case ir_depth_layout_less
: return "depth_less";
671 case ir_depth_layout_unchanged
: return "depth_unchanged";
679 ir_expression_operation
680 ir_expression::get_operator(const char *str
)
682 for (int op
= 0; op
<= int(ir_last_opcode
); op
++) {
683 if (strcmp(str
, ir_expression_operation_strings
[op
]) == 0)
684 return (ir_expression_operation
) op
;
686 return (ir_expression_operation
) -1;
690 ir_expression::variable_referenced() const
693 case ir_binop_vector_extract
:
694 case ir_triop_vector_insert
:
695 /* We get these for things like a[0] where a is a vector type. In these
696 * cases we want variable_referenced() to return the actual vector
697 * variable this is wrapping.
699 return operands
[0]->variable_referenced();
701 return ir_rvalue::variable_referenced();
705 ir_constant::ir_constant()
706 : ir_rvalue(ir_type_constant
)
708 this->const_elements
= NULL
;
711 ir_constant::ir_constant(const struct glsl_type
*type
,
712 const ir_constant_data
*data
)
713 : ir_rvalue(ir_type_constant
)
715 this->const_elements
= NULL
;
717 assert((type
->base_type
>= GLSL_TYPE_UINT
)
718 && (type
->base_type
<= GLSL_TYPE_IMAGE
));
721 memcpy(& this->value
, data
, sizeof(this->value
));
724 ir_constant::ir_constant(float16_t f16
, unsigned vector_elements
)
725 : ir_rvalue(ir_type_constant
)
727 assert(vector_elements
<= 4);
728 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT16
, vector_elements
, 1);
729 for (unsigned i
= 0; i
< vector_elements
; i
++) {
730 this->value
.f16
[i
] = f16
.bits
;
732 for (unsigned i
= vector_elements
; i
< 16; i
++) {
733 this->value
.f
[i
] = 0;
737 ir_constant::ir_constant(float f
, unsigned vector_elements
)
738 : ir_rvalue(ir_type_constant
)
740 assert(vector_elements
<= 4);
741 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
, vector_elements
, 1);
742 for (unsigned i
= 0; i
< vector_elements
; i
++) {
743 this->value
.f
[i
] = f
;
745 for (unsigned i
= vector_elements
; i
< 16; i
++) {
746 this->value
.f
[i
] = 0;
750 ir_constant::ir_constant(double d
, unsigned vector_elements
)
751 : ir_rvalue(ir_type_constant
)
753 assert(vector_elements
<= 4);
754 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
, vector_elements
, 1);
755 for (unsigned i
= 0; i
< vector_elements
; i
++) {
756 this->value
.d
[i
] = d
;
758 for (unsigned i
= vector_elements
; i
< 16; i
++) {
759 this->value
.d
[i
] = 0.0;
763 ir_constant::ir_constant(int16_t i16
, unsigned vector_elements
)
764 : ir_rvalue(ir_type_constant
)
766 assert(vector_elements
<= 4);
767 this->type
= glsl_type::get_instance(GLSL_TYPE_INT16
, vector_elements
, 1);
768 for (unsigned i
= 0; i
< vector_elements
; i
++) {
769 this->value
.i16
[i
] = i16
;
771 for (unsigned i
= vector_elements
; i
< 16; i
++) {
772 this->value
.i16
[i
] = 0;
776 ir_constant::ir_constant(uint16_t u16
, unsigned vector_elements
)
777 : ir_rvalue(ir_type_constant
)
779 assert(vector_elements
<= 4);
780 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT16
, vector_elements
, 1);
781 for (unsigned i
= 0; i
< vector_elements
; i
++) {
782 this->value
.u16
[i
] = u16
;
784 for (unsigned i
= vector_elements
; i
< 16; i
++) {
785 this->value
.u16
[i
] = 0;
789 ir_constant::ir_constant(unsigned int u
, unsigned vector_elements
)
790 : ir_rvalue(ir_type_constant
)
792 assert(vector_elements
<= 4);
793 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT
, vector_elements
, 1);
794 for (unsigned i
= 0; i
< vector_elements
; i
++) {
795 this->value
.u
[i
] = u
;
797 for (unsigned i
= vector_elements
; i
< 16; i
++) {
798 this->value
.u
[i
] = 0;
802 ir_constant::ir_constant(int integer
, unsigned vector_elements
)
803 : ir_rvalue(ir_type_constant
)
805 assert(vector_elements
<= 4);
806 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
, vector_elements
, 1);
807 for (unsigned i
= 0; i
< vector_elements
; i
++) {
808 this->value
.i
[i
] = integer
;
810 for (unsigned i
= vector_elements
; i
< 16; i
++) {
811 this->value
.i
[i
] = 0;
815 ir_constant::ir_constant(uint64_t u64
, unsigned vector_elements
)
816 : ir_rvalue(ir_type_constant
)
818 assert(vector_elements
<= 4);
819 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT64
, vector_elements
, 1);
820 for (unsigned i
= 0; i
< vector_elements
; i
++) {
821 this->value
.u64
[i
] = u64
;
823 for (unsigned i
= vector_elements
; i
< 16; i
++) {
824 this->value
.u64
[i
] = 0;
828 ir_constant::ir_constant(int64_t int64
, unsigned vector_elements
)
829 : ir_rvalue(ir_type_constant
)
831 assert(vector_elements
<= 4);
832 this->type
= glsl_type::get_instance(GLSL_TYPE_INT64
, vector_elements
, 1);
833 for (unsigned i
= 0; i
< vector_elements
; i
++) {
834 this->value
.i64
[i
] = int64
;
836 for (unsigned i
= vector_elements
; i
< 16; i
++) {
837 this->value
.i64
[i
] = 0;
841 ir_constant::ir_constant(bool b
, unsigned vector_elements
)
842 : ir_rvalue(ir_type_constant
)
844 assert(vector_elements
<= 4);
845 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
, vector_elements
, 1);
846 for (unsigned i
= 0; i
< vector_elements
; i
++) {
847 this->value
.b
[i
] = b
;
849 for (unsigned i
= vector_elements
; i
< 16; i
++) {
850 this->value
.b
[i
] = false;
854 ir_constant::ir_constant(const ir_constant
*c
, unsigned i
)
855 : ir_rvalue(ir_type_constant
)
857 this->const_elements
= NULL
;
858 this->type
= c
->type
->get_base_type();
860 /* Section 5.11 (Out-of-Bounds Accesses) of the GLSL 4.60 spec says:
862 * In the subsections described above for array, vector, matrix and
863 * structure accesses, any out-of-bounds access produced undefined
864 * behavior....Out-of-bounds reads return undefined values, which
865 * include values from other variables of the active program or zero.
867 * GL_KHR_robustness and GL_ARB_robustness encourage us to return zero.
869 if (i
>= c
->type
->vector_elements
) {
870 this->value
= { { 0 } };
874 switch (this->type
->base_type
) {
875 case GLSL_TYPE_UINT16
: this->value
.u16
[0] = c
->value
.u16
[i
]; break;
876 case GLSL_TYPE_INT16
: this->value
.i16
[0] = c
->value
.i16
[i
]; break;
877 case GLSL_TYPE_UINT
: this->value
.u
[0] = c
->value
.u
[i
]; break;
878 case GLSL_TYPE_INT
: this->value
.i
[0] = c
->value
.i
[i
]; break;
879 case GLSL_TYPE_FLOAT
: this->value
.f
[0] = c
->value
.f
[i
]; break;
880 case GLSL_TYPE_FLOAT16
: this->value
.f16
[0] = c
->value
.f16
[i
]; break;
881 case GLSL_TYPE_BOOL
: this->value
.b
[0] = c
->value
.b
[i
]; break;
882 case GLSL_TYPE_DOUBLE
: this->value
.d
[0] = c
->value
.d
[i
]; break;
883 default: assert(!"Should not get here."); break;
887 ir_constant::ir_constant(const struct glsl_type
*type
, exec_list
*value_list
)
888 : ir_rvalue(ir_type_constant
)
890 this->const_elements
= NULL
;
893 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
894 || type
->is_struct() || type
->is_array());
896 /* If the constant is a record, the types of each of the entries in
897 * value_list must be a 1-for-1 match with the structure components. Each
898 * entry must also be a constant. Just move the nodes from the value_list
899 * to the list in the ir_constant.
901 if (type
->is_array() || type
->is_struct()) {
902 this->const_elements
= ralloc_array(this, ir_constant
*, type
->length
);
904 foreach_in_list(ir_constant
, value
, value_list
) {
905 assert(value
->as_constant() != NULL
);
907 this->const_elements
[i
++] = value
;
912 for (unsigned i
= 0; i
< 16; i
++) {
913 this->value
.u
[i
] = 0;
916 ir_constant
*value
= (ir_constant
*) (value_list
->get_head_raw());
918 /* Constructors with exactly one scalar argument are special for vectors
919 * and matrices. For vectors, the scalar value is replicated to fill all
920 * the components. For matrices, the scalar fills the components of the
921 * diagonal while the rest is filled with 0.
923 if (value
->type
->is_scalar() && value
->next
->is_tail_sentinel()) {
924 if (type
->is_matrix()) {
925 /* Matrix - fill diagonal (rest is already set to 0) */
926 for (unsigned i
= 0; i
< type
->matrix_columns
; i
++) {
927 switch (type
->base_type
) {
928 case GLSL_TYPE_FLOAT
:
929 this->value
.f
[i
* type
->vector_elements
+ i
] =
932 case GLSL_TYPE_DOUBLE
:
933 this->value
.d
[i
* type
->vector_elements
+ i
] =
936 case GLSL_TYPE_FLOAT16
:
937 this->value
.f16
[i
* type
->vector_elements
+ i
] =
941 assert(!"unexpected matrix base type");
945 /* Vector or scalar - fill all components */
946 switch (type
->base_type
) {
947 case GLSL_TYPE_UINT16
:
948 case GLSL_TYPE_INT16
:
949 for (unsigned i
= 0; i
< type
->components(); i
++)
950 this->value
.u16
[i
] = value
->value
.u16
[0];
954 for (unsigned i
= 0; i
< type
->components(); i
++)
955 this->value
.u
[i
] = value
->value
.u
[0];
957 case GLSL_TYPE_FLOAT
:
958 for (unsigned i
= 0; i
< type
->components(); i
++)
959 this->value
.f
[i
] = value
->value
.f
[0];
961 case GLSL_TYPE_FLOAT16
:
962 for (unsigned i
= 0; i
< type
->components(); i
++)
963 this->value
.f16
[i
] = value
->value
.f16
[0];
965 case GLSL_TYPE_DOUBLE
:
966 for (unsigned i
= 0; i
< type
->components(); i
++)
967 this->value
.d
[i
] = value
->value
.d
[0];
969 case GLSL_TYPE_UINT64
:
970 case GLSL_TYPE_INT64
:
971 for (unsigned i
= 0; i
< type
->components(); i
++)
972 this->value
.u64
[i
] = value
->value
.u64
[0];
975 for (unsigned i
= 0; i
< type
->components(); i
++)
976 this->value
.b
[i
] = value
->value
.b
[0];
978 case GLSL_TYPE_SAMPLER
:
979 case GLSL_TYPE_IMAGE
:
980 this->value
.u64
[0] = value
->value
.u64
[0];
983 assert(!"Should not get here.");
990 if (type
->is_matrix() && value
->type
->is_matrix()) {
991 assert(value
->next
->is_tail_sentinel());
993 /* From section 5.4.2 of the GLSL 1.20 spec:
994 * "If a matrix is constructed from a matrix, then each component
995 * (column i, row j) in the result that has a corresponding component
996 * (column i, row j) in the argument will be initialized from there."
998 unsigned cols
= MIN2(type
->matrix_columns
, value
->type
->matrix_columns
);
999 unsigned rows
= MIN2(type
->vector_elements
, value
->type
->vector_elements
);
1000 for (unsigned i
= 0; i
< cols
; i
++) {
1001 for (unsigned j
= 0; j
< rows
; j
++) {
1002 const unsigned src
= i
* value
->type
->vector_elements
+ j
;
1003 const unsigned dst
= i
* type
->vector_elements
+ j
;
1004 this->value
.f
[dst
] = value
->value
.f
[src
];
1008 /* "All other components will be initialized to the identity matrix." */
1009 for (unsigned i
= cols
; i
< type
->matrix_columns
; i
++)
1010 this->value
.f
[i
* type
->vector_elements
+ i
] = 1.0;
1015 /* Use each component from each entry in the value_list to initialize one
1016 * component of the constant being constructed.
1020 assert(value
->as_constant() != NULL
);
1021 assert(!value
->is_tail_sentinel());
1023 for (unsigned j
= 0; j
< value
->type
->components(); j
++) {
1024 switch (type
->base_type
) {
1025 case GLSL_TYPE_UINT16
:
1026 this->value
.u16
[i
] = value
->get_uint16_component(j
);
1028 case GLSL_TYPE_INT16
:
1029 this->value
.i16
[i
] = value
->get_int16_component(j
);
1031 case GLSL_TYPE_UINT
:
1032 this->value
.u
[i
] = value
->get_uint_component(j
);
1035 this->value
.i
[i
] = value
->get_int_component(j
);
1037 case GLSL_TYPE_FLOAT
:
1038 this->value
.f
[i
] = value
->get_float_component(j
);
1040 case GLSL_TYPE_FLOAT16
:
1041 this->value
.f16
[i
] = value
->get_float16_component(j
);
1043 case GLSL_TYPE_BOOL
:
1044 this->value
.b
[i
] = value
->get_bool_component(j
);
1046 case GLSL_TYPE_DOUBLE
:
1047 this->value
.d
[i
] = value
->get_double_component(j
);
1049 case GLSL_TYPE_UINT64
:
1050 this->value
.u64
[i
] = value
->get_uint64_component(j
);
1052 case GLSL_TYPE_INT64
:
1053 this->value
.i64
[i
] = value
->get_int64_component(j
);
1056 /* FINISHME: What to do? Exceptions are not the answer.
1062 if (i
>= type
->components())
1066 if (i
>= type
->components())
1067 break; /* avoid downcasting a list sentinel */
1068 value
= (ir_constant
*) value
->next
;
1073 ir_constant::zero(void *mem_ctx
, const glsl_type
*type
)
1075 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
1076 || type
->is_struct() || type
->is_array());
1078 ir_constant
*c
= new(mem_ctx
) ir_constant
;
1080 memset(&c
->value
, 0, sizeof(c
->value
));
1082 if (type
->is_array()) {
1083 c
->const_elements
= ralloc_array(c
, ir_constant
*, type
->length
);
1085 for (unsigned i
= 0; i
< type
->length
; i
++)
1086 c
->const_elements
[i
] = ir_constant::zero(c
, type
->fields
.array
);
1089 if (type
->is_struct()) {
1090 c
->const_elements
= ralloc_array(c
, ir_constant
*, type
->length
);
1092 for (unsigned i
= 0; i
< type
->length
; i
++) {
1093 c
->const_elements
[i
] =
1094 ir_constant::zero(mem_ctx
, type
->fields
.structure
[i
].type
);
1102 ir_constant::get_bool_component(unsigned i
) const
1104 switch (this->type
->base_type
) {
1105 case GLSL_TYPE_UINT16
:return this->value
.u16
[i
] != 0;
1106 case GLSL_TYPE_INT16
: return this->value
.i16
[i
] != 0;
1107 case GLSL_TYPE_UINT
: return this->value
.u
[i
] != 0;
1108 case GLSL_TYPE_INT
: return this->value
.i
[i
] != 0;
1109 case GLSL_TYPE_FLOAT
: return ((int)this->value
.f
[i
]) != 0;
1110 case GLSL_TYPE_FLOAT16
: return ((int)_mesa_half_to_float(this->value
.f16
[i
])) != 0;
1111 case GLSL_TYPE_BOOL
: return this->value
.b
[i
];
1112 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
] != 0.0;
1113 case GLSL_TYPE_SAMPLER
:
1114 case GLSL_TYPE_IMAGE
:
1115 case GLSL_TYPE_UINT64
: return this->value
.u64
[i
] != 0;
1116 case GLSL_TYPE_INT64
: return this->value
.i64
[i
] != 0;
1117 default: assert(!"Should not get here."); break;
1120 /* Must return something to make the compiler happy. This is clearly an
1127 ir_constant::get_float_component(unsigned i
) const
1129 switch (this->type
->base_type
) {
1130 case GLSL_TYPE_UINT16
:return (float) this->value
.u16
[i
];
1131 case GLSL_TYPE_INT16
: return (float) this->value
.i16
[i
];
1132 case GLSL_TYPE_UINT
: return (float) this->value
.u
[i
];
1133 case GLSL_TYPE_INT
: return (float) this->value
.i
[i
];
1134 case GLSL_TYPE_FLOAT
: return this->value
.f
[i
];
1135 case GLSL_TYPE_FLOAT16
: return _mesa_half_to_float(this->value
.f16
[i
]);
1136 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0f
: 0.0f
;
1137 case GLSL_TYPE_DOUBLE
: return (float) this->value
.d
[i
];
1138 case GLSL_TYPE_SAMPLER
:
1139 case GLSL_TYPE_IMAGE
:
1140 case GLSL_TYPE_UINT64
: return (float) this->value
.u64
[i
];
1141 case GLSL_TYPE_INT64
: return (float) this->value
.i64
[i
];
1142 default: assert(!"Should not get here."); break;
1145 /* Must return something to make the compiler happy. This is clearly an
1152 ir_constant::get_float16_component(unsigned i
) const
1154 if (this->type
->base_type
== GLSL_TYPE_FLOAT16
)
1155 return this->value
.f16
[i
];
1157 return _mesa_float_to_half(get_float_component(i
));
1161 ir_constant::get_double_component(unsigned i
) const
1163 switch (this->type
->base_type
) {
1164 case GLSL_TYPE_UINT16
:return (double) this->value
.u16
[i
];
1165 case GLSL_TYPE_INT16
: return (double) this->value
.i16
[i
];
1166 case GLSL_TYPE_UINT
: return (double) this->value
.u
[i
];
1167 case GLSL_TYPE_INT
: return (double) this->value
.i
[i
];
1168 case GLSL_TYPE_FLOAT
: return (double) this->value
.f
[i
];
1169 case GLSL_TYPE_FLOAT16
: return (double) _mesa_half_to_float(this->value
.f16
[i
]);
1170 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0 : 0.0;
1171 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
];
1172 case GLSL_TYPE_SAMPLER
:
1173 case GLSL_TYPE_IMAGE
:
1174 case GLSL_TYPE_UINT64
: return (double) this->value
.u64
[i
];
1175 case GLSL_TYPE_INT64
: return (double) this->value
.i64
[i
];
1176 default: assert(!"Should not get here."); break;
1179 /* Must return something to make the compiler happy. This is clearly an
1186 ir_constant::get_int16_component(unsigned i
) const
1188 switch (this->type
->base_type
) {
1189 case GLSL_TYPE_UINT16
:return this->value
.u16
[i
];
1190 case GLSL_TYPE_INT16
: return this->value
.i16
[i
];
1191 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1192 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1193 case GLSL_TYPE_FLOAT
: return (int16_t) this->value
.f
[i
];
1194 case GLSL_TYPE_FLOAT16
: return (int16_t) _mesa_half_to_float(this->value
.f16
[i
]);
1195 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1196 case GLSL_TYPE_DOUBLE
: return (int16_t) this->value
.d
[i
];
1197 case GLSL_TYPE_SAMPLER
:
1198 case GLSL_TYPE_IMAGE
:
1199 case GLSL_TYPE_UINT64
: return (int16_t) this->value
.u64
[i
];
1200 case GLSL_TYPE_INT64
: return (int16_t) this->value
.i64
[i
];
1201 default: assert(!"Should not get here."); break;
1204 /* Must return something to make the compiler happy. This is clearly an
1211 ir_constant::get_uint16_component(unsigned i
) const
1213 switch (this->type
->base_type
) {
1214 case GLSL_TYPE_UINT16
:return this->value
.u16
[i
];
1215 case GLSL_TYPE_INT16
: return this->value
.i16
[i
];
1216 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1217 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1218 case GLSL_TYPE_FLOAT
: return (uint16_t) this->value
.f
[i
];
1219 case GLSL_TYPE_FLOAT16
: return (uint16_t) _mesa_half_to_float(this->value
.f16
[i
]);
1220 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1221 case GLSL_TYPE_DOUBLE
: return (uint16_t) this->value
.d
[i
];
1222 case GLSL_TYPE_SAMPLER
:
1223 case GLSL_TYPE_IMAGE
:
1224 case GLSL_TYPE_UINT64
: return (uint16_t) this->value
.u64
[i
];
1225 case GLSL_TYPE_INT64
: return (uint16_t) this->value
.i64
[i
];
1226 default: assert(!"Should not get here."); break;
1229 /* Must return something to make the compiler happy. This is clearly an
1236 ir_constant::get_int_component(unsigned i
) const
1238 switch (this->type
->base_type
) {
1239 case GLSL_TYPE_UINT16
:return this->value
.u16
[i
];
1240 case GLSL_TYPE_INT16
: return this->value
.i16
[i
];
1241 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1242 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1243 case GLSL_TYPE_FLOAT
: return (int) this->value
.f
[i
];
1244 case GLSL_TYPE_FLOAT16
: return (int) _mesa_half_to_float(this->value
.f16
[i
]);
1245 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1246 case GLSL_TYPE_DOUBLE
: return (int) this->value
.d
[i
];
1247 case GLSL_TYPE_SAMPLER
:
1248 case GLSL_TYPE_IMAGE
:
1249 case GLSL_TYPE_UINT64
: return (int) this->value
.u64
[i
];
1250 case GLSL_TYPE_INT64
: return (int) this->value
.i64
[i
];
1251 default: assert(!"Should not get here."); break;
1254 /* Must return something to make the compiler happy. This is clearly an
1261 ir_constant::get_uint_component(unsigned i
) const
1263 switch (this->type
->base_type
) {
1264 case GLSL_TYPE_UINT16
:return this->value
.u16
[i
];
1265 case GLSL_TYPE_INT16
: return this->value
.i16
[i
];
1266 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1267 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1268 case GLSL_TYPE_FLOAT
: return (unsigned) this->value
.f
[i
];
1269 case GLSL_TYPE_FLOAT16
: return (unsigned) _mesa_half_to_float(this->value
.f16
[i
]);
1270 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1271 case GLSL_TYPE_DOUBLE
: return (unsigned) this->value
.d
[i
];
1272 case GLSL_TYPE_SAMPLER
:
1273 case GLSL_TYPE_IMAGE
:
1274 case GLSL_TYPE_UINT64
: return (unsigned) this->value
.u64
[i
];
1275 case GLSL_TYPE_INT64
: return (unsigned) this->value
.i64
[i
];
1276 default: assert(!"Should not get here."); break;
1279 /* Must return something to make the compiler happy. This is clearly an
1286 ir_constant::get_int64_component(unsigned i
) const
1288 switch (this->type
->base_type
) {
1289 case GLSL_TYPE_UINT16
:return this->value
.u16
[i
];
1290 case GLSL_TYPE_INT16
: return this->value
.i16
[i
];
1291 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1292 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1293 case GLSL_TYPE_FLOAT
: return (int64_t) this->value
.f
[i
];
1294 case GLSL_TYPE_FLOAT16
: return (int64_t) _mesa_half_to_float(this->value
.f16
[i
]);
1295 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1296 case GLSL_TYPE_DOUBLE
: return (int64_t) this->value
.d
[i
];
1297 case GLSL_TYPE_SAMPLER
:
1298 case GLSL_TYPE_IMAGE
:
1299 case GLSL_TYPE_UINT64
: return (int64_t) this->value
.u64
[i
];
1300 case GLSL_TYPE_INT64
: return this->value
.i64
[i
];
1301 default: assert(!"Should not get here."); break;
1304 /* Must return something to make the compiler happy. This is clearly an
1311 ir_constant::get_uint64_component(unsigned i
) const
1313 switch (this->type
->base_type
) {
1314 case GLSL_TYPE_UINT16
:return this->value
.u16
[i
];
1315 case GLSL_TYPE_INT16
: return this->value
.i16
[i
];
1316 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1317 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1318 case GLSL_TYPE_FLOAT
: return (uint64_t) this->value
.f
[i
];
1319 case GLSL_TYPE_FLOAT16
: return (uint64_t) _mesa_half_to_float(this->value
.f16
[i
]);
1320 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1321 case GLSL_TYPE_DOUBLE
: return (uint64_t) this->value
.d
[i
];
1322 case GLSL_TYPE_SAMPLER
:
1323 case GLSL_TYPE_IMAGE
:
1324 case GLSL_TYPE_UINT64
: return this->value
.u64
[i
];
1325 case GLSL_TYPE_INT64
: return (uint64_t) this->value
.i64
[i
];
1326 default: assert(!"Should not get here."); break;
1329 /* Must return something to make the compiler happy. This is clearly an
1336 ir_constant::get_array_element(unsigned i
) const
1338 assert(this->type
->is_array());
1340 /* From page 35 (page 41 of the PDF) of the GLSL 1.20 spec:
1342 * "Behavior is undefined if a shader subscripts an array with an index
1343 * less than 0 or greater than or equal to the size the array was
1346 * Most out-of-bounds accesses are removed before things could get this far.
1347 * There are cases where non-constant array index values can get constant
1352 else if (i
>= this->type
->length
)
1353 i
= this->type
->length
- 1;
1355 return const_elements
[i
];
1359 ir_constant::get_record_field(int idx
)
1361 assert(this->type
->is_struct());
1362 assert(idx
>= 0 && (unsigned) idx
< this->type
->length
);
1364 return const_elements
[idx
];
1368 ir_constant::copy_offset(ir_constant
*src
, int offset
)
1370 switch (this->type
->base_type
) {
1371 case GLSL_TYPE_UINT16
:
1372 case GLSL_TYPE_INT16
:
1373 case GLSL_TYPE_UINT
:
1375 case GLSL_TYPE_FLOAT
:
1376 case GLSL_TYPE_FLOAT16
:
1377 case GLSL_TYPE_DOUBLE
:
1378 case GLSL_TYPE_SAMPLER
:
1379 case GLSL_TYPE_IMAGE
:
1380 case GLSL_TYPE_UINT64
:
1381 case GLSL_TYPE_INT64
:
1382 case GLSL_TYPE_BOOL
: {
1383 unsigned int size
= src
->type
->components();
1384 assert (size
<= this->type
->components() - offset
);
1385 for (unsigned int i
=0; i
<size
; i
++) {
1386 switch (this->type
->base_type
) {
1387 case GLSL_TYPE_UINT16
:
1388 value
.u16
[i
+offset
] = src
->get_uint16_component(i
);
1390 case GLSL_TYPE_INT16
:
1391 value
.i16
[i
+offset
] = src
->get_int16_component(i
);
1393 case GLSL_TYPE_UINT
:
1394 value
.u
[i
+offset
] = src
->get_uint_component(i
);
1397 value
.i
[i
+offset
] = src
->get_int_component(i
);
1399 case GLSL_TYPE_FLOAT
:
1400 value
.f
[i
+offset
] = src
->get_float_component(i
);
1402 case GLSL_TYPE_FLOAT16
:
1403 value
.f16
[i
+offset
] = src
->get_float16_component(i
);
1405 case GLSL_TYPE_BOOL
:
1406 value
.b
[i
+offset
] = src
->get_bool_component(i
);
1408 case GLSL_TYPE_DOUBLE
:
1409 value
.d
[i
+offset
] = src
->get_double_component(i
);
1411 case GLSL_TYPE_SAMPLER
:
1412 case GLSL_TYPE_IMAGE
:
1413 case GLSL_TYPE_UINT64
:
1414 value
.u64
[i
+offset
] = src
->get_uint64_component(i
);
1416 case GLSL_TYPE_INT64
:
1417 value
.i64
[i
+offset
] = src
->get_int64_component(i
);
1419 default: // Shut up the compiler
1426 case GLSL_TYPE_STRUCT
:
1427 case GLSL_TYPE_ARRAY
: {
1428 assert (src
->type
== this->type
);
1429 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1430 this->const_elements
[i
] = src
->const_elements
[i
]->clone(this, NULL
);
1436 assert(!"Should not get here.");
1442 ir_constant::copy_masked_offset(ir_constant
*src
, int offset
, unsigned int mask
)
1444 assert (!type
->is_array() && !type
->is_struct());
1446 if (!type
->is_vector() && !type
->is_matrix()) {
1452 for (int i
=0; i
<4; i
++) {
1453 if (mask
& (1 << i
)) {
1454 switch (this->type
->base_type
) {
1455 case GLSL_TYPE_UINT16
:
1456 value
.u16
[i
+offset
] = src
->get_uint16_component(id
++);
1458 case GLSL_TYPE_INT16
:
1459 value
.i16
[i
+offset
] = src
->get_int16_component(id
++);
1461 case GLSL_TYPE_UINT
:
1462 value
.u
[i
+offset
] = src
->get_uint_component(id
++);
1465 value
.i
[i
+offset
] = src
->get_int_component(id
++);
1467 case GLSL_TYPE_FLOAT
:
1468 value
.f
[i
+offset
] = src
->get_float_component(id
++);
1470 case GLSL_TYPE_FLOAT16
:
1471 value
.f16
[i
+offset
] = src
->get_float16_component(id
++);
1473 case GLSL_TYPE_BOOL
:
1474 value
.b
[i
+offset
] = src
->get_bool_component(id
++);
1476 case GLSL_TYPE_DOUBLE
:
1477 value
.d
[i
+offset
] = src
->get_double_component(id
++);
1479 case GLSL_TYPE_SAMPLER
:
1480 case GLSL_TYPE_IMAGE
:
1481 case GLSL_TYPE_UINT64
:
1482 value
.u64
[i
+offset
] = src
->get_uint64_component(id
++);
1484 case GLSL_TYPE_INT64
:
1485 value
.i64
[i
+offset
] = src
->get_int64_component(id
++);
1488 assert(!"Should not get here.");
1496 ir_constant::has_value(const ir_constant
*c
) const
1498 if (this->type
!= c
->type
)
1501 if (this->type
->is_array() || this->type
->is_struct()) {
1502 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1503 if (!this->const_elements
[i
]->has_value(c
->const_elements
[i
]))
1509 for (unsigned i
= 0; i
< this->type
->components(); i
++) {
1510 switch (this->type
->base_type
) {
1511 case GLSL_TYPE_UINT16
:
1512 if (this->value
.u16
[i
] != c
->value
.u16
[i
])
1515 case GLSL_TYPE_INT16
:
1516 if (this->value
.i16
[i
] != c
->value
.i16
[i
])
1519 case GLSL_TYPE_UINT
:
1520 if (this->value
.u
[i
] != c
->value
.u
[i
])
1524 if (this->value
.i
[i
] != c
->value
.i
[i
])
1527 case GLSL_TYPE_FLOAT
:
1528 if (this->value
.f
[i
] != c
->value
.f
[i
])
1531 case GLSL_TYPE_FLOAT16
:
1532 /* Convert to float to make sure NaN and ±0.0 compares correctly */
1533 if (_mesa_half_to_float(this->value
.f16
[i
]) !=
1534 _mesa_half_to_float(c
->value
.f16
[i
]))
1537 case GLSL_TYPE_BOOL
:
1538 if (this->value
.b
[i
] != c
->value
.b
[i
])
1541 case GLSL_TYPE_DOUBLE
:
1542 if (this->value
.d
[i
] != c
->value
.d
[i
])
1545 case GLSL_TYPE_SAMPLER
:
1546 case GLSL_TYPE_IMAGE
:
1547 case GLSL_TYPE_UINT64
:
1548 if (this->value
.u64
[i
] != c
->value
.u64
[i
])
1551 case GLSL_TYPE_INT64
:
1552 if (this->value
.i64
[i
] != c
->value
.i64
[i
])
1556 assert(!"Should not get here.");
1565 ir_constant::is_value(float f
, int i
) const
1567 if (!this->type
->is_scalar() && !this->type
->is_vector())
1570 /* Only accept boolean values for 0/1. */
1571 if (int(bool(i
)) != i
&& this->type
->is_boolean())
1574 for (unsigned c
= 0; c
< this->type
->vector_elements
; c
++) {
1575 switch (this->type
->base_type
) {
1576 case GLSL_TYPE_FLOAT
:
1577 if (this->value
.f
[c
] != f
)
1580 case GLSL_TYPE_FLOAT16
:
1581 if (_mesa_half_to_float(this->value
.f16
[c
]) != f
)
1584 case GLSL_TYPE_INT16
:
1585 if (this->value
.i16
[c
] != int16_t(i
))
1588 case GLSL_TYPE_UINT16
:
1589 if (this->value
.u16
[c
] != uint16_t(i
))
1593 if (this->value
.i
[c
] != i
)
1596 case GLSL_TYPE_UINT
:
1597 if (this->value
.u
[c
] != unsigned(i
))
1600 case GLSL_TYPE_BOOL
:
1601 if (this->value
.b
[c
] != bool(i
))
1604 case GLSL_TYPE_DOUBLE
:
1605 if (this->value
.d
[c
] != double(f
))
1608 case GLSL_TYPE_SAMPLER
:
1609 case GLSL_TYPE_IMAGE
:
1610 case GLSL_TYPE_UINT64
:
1611 if (this->value
.u64
[c
] != uint64_t(i
))
1614 case GLSL_TYPE_INT64
:
1615 if (this->value
.i64
[c
] != i
)
1619 /* The only other base types are structures, arrays, and samplers.
1620 * Samplers cannot be constants, and the others should have been
1621 * filtered out above.
1623 assert(!"Should not get here.");
1632 ir_constant::is_zero() const
1634 return is_value(0.0, 0);
1638 ir_constant::is_one() const
1640 return is_value(1.0, 1);
1644 ir_constant::is_negative_one() const
1646 return is_value(-1.0, -1);
1650 ir_constant::is_uint16_constant() const
1652 if (!type
->is_integer_32())
1655 return value
.u
[0] < (1 << 16);
1659 : ir_instruction(ir_type_loop
)
1664 ir_dereference_variable::ir_dereference_variable(ir_variable
*var
)
1665 : ir_dereference(ir_type_dereference_variable
)
1667 assert(var
!= NULL
);
1670 this->type
= var
->type
;
1674 ir_dereference_array::ir_dereference_array(ir_rvalue
*value
,
1675 ir_rvalue
*array_index
)
1676 : ir_dereference(ir_type_dereference_array
)
1678 this->array_index
= array_index
;
1679 this->set_array(value
);
1683 ir_dereference_array::ir_dereference_array(ir_variable
*var
,
1684 ir_rvalue
*array_index
)
1685 : ir_dereference(ir_type_dereference_array
)
1687 void *ctx
= ralloc_parent(var
);
1689 this->array_index
= array_index
;
1690 this->set_array(new(ctx
) ir_dereference_variable(var
));
1695 ir_dereference_array::set_array(ir_rvalue
*value
)
1697 assert(value
!= NULL
);
1699 this->array
= value
;
1701 const glsl_type
*const vt
= this->array
->type
;
1703 if (vt
->is_array()) {
1704 type
= vt
->fields
.array
;
1705 } else if (vt
->is_matrix()) {
1706 type
= vt
->column_type();
1707 } else if (vt
->is_vector()) {
1708 type
= vt
->get_base_type();
1713 ir_dereference_record::ir_dereference_record(ir_rvalue
*value
,
1715 : ir_dereference(ir_type_dereference_record
)
1717 assert(value
!= NULL
);
1719 this->record
= value
;
1720 this->type
= this->record
->type
->field_type(field
);
1721 this->field_idx
= this->record
->type
->field_index(field
);
1725 ir_dereference_record::ir_dereference_record(ir_variable
*var
,
1727 : ir_dereference(ir_type_dereference_record
)
1729 void *ctx
= ralloc_parent(var
);
1731 this->record
= new(ctx
) ir_dereference_variable(var
);
1732 this->type
= this->record
->type
->field_type(field
);
1733 this->field_idx
= this->record
->type
->field_index(field
);
1737 ir_dereference::is_lvalue(const struct _mesa_glsl_parse_state
*state
) const
1739 ir_variable
*var
= this->variable_referenced();
1741 /* Every l-value derference chain eventually ends in a variable.
1743 if ((var
== NULL
) || var
->data
.read_only
)
1746 /* From section 4.1.7 of the ARB_bindless_texture spec:
1748 * "Samplers can be used as l-values, so can be assigned into and used as
1749 * "out" and "inout" function parameters."
1751 * From section 4.1.X of the ARB_bindless_texture spec:
1753 * "Images can be used as l-values, so can be assigned into and used as
1754 * "out" and "inout" function parameters."
1756 if ((!state
|| state
->has_bindless()) &&
1757 (this->type
->contains_sampler() || this->type
->contains_image()))
1760 /* From section 4.1.7 of the GLSL 4.40 spec:
1762 * "Opaque variables cannot be treated as l-values; hence cannot
1763 * be used as out or inout function parameters, nor can they be
1766 if (this->type
->contains_opaque())
1773 static const char * const tex_opcode_strs
[] = { "tex", "txb", "txl", "txd", "txf", "txf_ms", "txs", "lod", "tg4", "query_levels", "texture_samples", "samples_identical" };
1775 const char *ir_texture::opcode_string()
1777 assert((unsigned int) op
< ARRAY_SIZE(tex_opcode_strs
));
1778 return tex_opcode_strs
[op
];
1782 ir_texture::get_opcode(const char *str
)
1784 const int count
= sizeof(tex_opcode_strs
) / sizeof(tex_opcode_strs
[0]);
1785 for (int op
= 0; op
< count
; op
++) {
1786 if (strcmp(str
, tex_opcode_strs
[op
]) == 0)
1787 return (ir_texture_opcode
) op
;
1789 return (ir_texture_opcode
) -1;
1794 ir_texture::set_sampler(ir_dereference
*sampler
, const glsl_type
*type
)
1796 assert(sampler
!= NULL
);
1797 assert(type
!= NULL
);
1798 this->sampler
= sampler
;
1801 if (this->op
== ir_txs
|| this->op
== ir_query_levels
||
1802 this->op
== ir_texture_samples
) {
1803 assert(type
->base_type
== GLSL_TYPE_INT
);
1804 } else if (this->op
== ir_lod
) {
1805 assert(type
->vector_elements
== 2);
1806 assert(type
->is_float());
1807 } else if (this->op
== ir_samples_identical
) {
1808 assert(type
== glsl_type::bool_type
);
1809 assert(sampler
->type
->is_sampler());
1810 assert(sampler
->type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
);
1812 assert(sampler
->type
->sampled_type
== (int) type
->base_type
);
1813 if (sampler
->type
->sampler_shadow
)
1814 assert(type
->vector_elements
== 4 || type
->vector_elements
== 1);
1816 assert(type
->vector_elements
== 4);
1822 ir_swizzle::init_mask(const unsigned *comp
, unsigned count
)
1824 assert((count
>= 1) && (count
<= 4));
1826 memset(&this->mask
, 0, sizeof(this->mask
));
1827 this->mask
.num_components
= count
;
1829 unsigned dup_mask
= 0;
1832 assert(comp
[3] <= 3);
1833 dup_mask
|= (1U << comp
[3])
1834 & ((1U << comp
[0]) | (1U << comp
[1]) | (1U << comp
[2]));
1835 this->mask
.w
= comp
[3];
1838 assert(comp
[2] <= 3);
1839 dup_mask
|= (1U << comp
[2])
1840 & ((1U << comp
[0]) | (1U << comp
[1]));
1841 this->mask
.z
= comp
[2];
1844 assert(comp
[1] <= 3);
1845 dup_mask
|= (1U << comp
[1])
1846 & ((1U << comp
[0]));
1847 this->mask
.y
= comp
[1];
1850 assert(comp
[0] <= 3);
1851 this->mask
.x
= comp
[0];
1854 this->mask
.has_duplicates
= dup_mask
!= 0;
1856 /* Based on the number of elements in the swizzle and the base type
1857 * (i.e., float, int, unsigned, or bool) of the vector being swizzled,
1858 * generate the type of the resulting value.
1860 type
= glsl_type::get_instance(val
->type
->base_type
, mask
.num_components
, 1);
1863 ir_swizzle::ir_swizzle(ir_rvalue
*val
, unsigned x
, unsigned y
, unsigned z
,
1864 unsigned w
, unsigned count
)
1865 : ir_rvalue(ir_type_swizzle
), val(val
)
1867 const unsigned components
[4] = { x
, y
, z
, w
};
1868 this->init_mask(components
, count
);
1871 ir_swizzle::ir_swizzle(ir_rvalue
*val
, const unsigned *comp
,
1873 : ir_rvalue(ir_type_swizzle
), val(val
)
1875 this->init_mask(comp
, count
);
1878 ir_swizzle::ir_swizzle(ir_rvalue
*val
, ir_swizzle_mask mask
)
1879 : ir_rvalue(ir_type_swizzle
), val(val
), mask(mask
)
1881 this->type
= glsl_type::get_instance(val
->type
->base_type
,
1882 mask
.num_components
, 1);
1891 ir_swizzle::create(ir_rvalue
*val
, const char *str
, unsigned vector_length
)
1893 void *ctx
= ralloc_parent(val
);
1895 /* For each possible swizzle character, this table encodes the value in
1896 * \c idx_map that represents the 0th element of the vector. For invalid
1897 * swizzle characters (e.g., 'k'), a special value is used that will allow
1898 * detection of errors.
1900 static const unsigned char base_idx
[26] = {
1901 /* a b c d e f g h i j k l m */
1902 R
, R
, I
, I
, I
, I
, R
, I
, I
, I
, I
, I
, I
,
1903 /* n o p q r s t u v w x y z */
1904 I
, I
, S
, S
, R
, S
, S
, I
, I
, X
, X
, X
, X
1907 /* Each valid swizzle character has an entry in the previous table. This
1908 * table encodes the base index encoded in the previous table plus the actual
1909 * index of the swizzle character. When processing swizzles, the first
1910 * character in the string is indexed in the previous table. Each character
1911 * in the string is indexed in this table, and the value found there has the
1912 * value form the first table subtracted. The result must be on the range
1915 * For example, the string "wzyx" will get X from the first table. Each of
1916 * the charcaters will get X+3, X+2, X+1, and X+0 from this table. After
1917 * subtraction, the swizzle values are { 3, 2, 1, 0 }.
1919 * The string "wzrg" will get X from the first table. Each of the characters
1920 * will get X+3, X+2, R+0, and R+1 from this table. After subtraction, the
1921 * swizzle values are { 3, 2, 4, 5 }. Since 4 and 5 are outside the range
1922 * [0,3], the error is detected.
1924 static const unsigned char idx_map
[26] = {
1925 /* a b c d e f g h i j k l m */
1926 R
+3, R
+2, 0, 0, 0, 0, R
+1, 0, 0, 0, 0, 0, 0,
1927 /* n o p q r s t u v w x y z */
1928 0, 0, S
+2, S
+3, R
+0, S
+0, S
+1, 0, 0, X
+3, X
+0, X
+1, X
+2
1931 int swiz_idx
[4] = { 0, 0, 0, 0 };
1935 /* Validate the first character in the swizzle string and look up the base
1936 * index value as described above.
1938 if ((str
[0] < 'a') || (str
[0] > 'z'))
1941 const unsigned base
= base_idx
[str
[0] - 'a'];
1944 for (i
= 0; (i
< 4) && (str
[i
] != '\0'); i
++) {
1945 /* Validate the next character, and, as described above, convert it to a
1948 if ((str
[i
] < 'a') || (str
[i
] > 'z'))
1951 swiz_idx
[i
] = idx_map
[str
[i
] - 'a'] - base
;
1952 if ((swiz_idx
[i
] < 0) || (swiz_idx
[i
] >= (int) vector_length
))
1959 return new(ctx
) ir_swizzle(val
, swiz_idx
[0], swiz_idx
[1], swiz_idx
[2],
1969 ir_swizzle::variable_referenced() const
1971 return this->val
->variable_referenced();
1975 bool ir_variable::temporaries_allocate_names
= false;
1977 const char ir_variable::tmp_name
[] = "compiler_temp";
1979 ir_variable::ir_variable(const struct glsl_type
*type
, const char *name
,
1980 ir_variable_mode mode
)
1981 : ir_instruction(ir_type_variable
)
1985 if (mode
== ir_var_temporary
&& !ir_variable::temporaries_allocate_names
)
1988 /* The ir_variable clone method may call this constructor with name set to
1992 || mode
== ir_var_temporary
1993 || mode
== ir_var_function_in
1994 || mode
== ir_var_function_out
1995 || mode
== ir_var_function_inout
);
1996 assert(name
!= ir_variable::tmp_name
1997 || mode
== ir_var_temporary
);
1998 if (mode
== ir_var_temporary
1999 && (name
== NULL
|| name
== ir_variable::tmp_name
)) {
2000 this->name
= ir_variable::tmp_name
;
2001 } else if (name
== NULL
||
2002 strlen(name
) < ARRAY_SIZE(this->name_storage
)) {
2003 strcpy(this->name_storage
, name
? name
: "");
2004 this->name
= this->name_storage
;
2006 this->name
= ralloc_strdup(this, name
);
2009 this->u
.max_ifc_array_access
= NULL
;
2011 this->data
.explicit_location
= false;
2012 this->data
.explicit_index
= false;
2013 this->data
.explicit_binding
= false;
2014 this->data
.explicit_component
= false;
2015 this->data
.has_initializer
= false;
2016 this->data
.is_implicit_initializer
= false;
2017 this->data
.is_unmatched_generic_inout
= false;
2018 this->data
.is_xfb_only
= false;
2019 this->data
.explicit_xfb_buffer
= false;
2020 this->data
.explicit_xfb_offset
= false;
2021 this->data
.explicit_xfb_stride
= false;
2022 this->data
.location
= -1;
2023 this->data
.location_frac
= 0;
2024 this->data
.matrix_layout
= GLSL_MATRIX_LAYOUT_INHERITED
;
2025 this->data
.from_named_ifc_block
= false;
2026 this->data
.must_be_shader_input
= false;
2027 this->data
.index
= 0;
2028 this->data
.binding
= 0;
2029 this->data
.warn_extension_index
= 0;
2030 this->constant_value
= NULL
;
2031 this->constant_initializer
= NULL
;
2032 this->data
.depth_layout
= ir_depth_layout_none
;
2033 this->data
.used
= false;
2034 this->data
.assigned
= false;
2035 this->data
.always_active_io
= false;
2036 this->data
.read_only
= false;
2037 this->data
.centroid
= false;
2038 this->data
.sample
= false;
2039 this->data
.patch
= false;
2040 this->data
.explicit_invariant
= false;
2041 this->data
.invariant
= false;
2042 this->data
.precise
= false;
2043 this->data
.how_declared
= ir_var_declared_normally
;
2044 this->data
.mode
= mode
;
2045 this->data
.interpolation
= INTERP_MODE_NONE
;
2046 this->data
.max_array_access
= -1;
2047 this->data
.offset
= 0;
2048 this->data
.precision
= GLSL_PRECISION_NONE
;
2049 this->data
.memory_read_only
= false;
2050 this->data
.memory_write_only
= false;
2051 this->data
.memory_coherent
= false;
2052 this->data
.memory_volatile
= false;
2053 this->data
.memory_restrict
= false;
2054 this->data
.from_ssbo_unsized_array
= false;
2055 this->data
.implicit_sized_array
= false;
2056 this->data
.fb_fetch_output
= false;
2057 this->data
.bindless
= false;
2058 this->data
.bound
= false;
2059 this->data
.image_format
= PIPE_FORMAT_NONE
;
2060 this->data
._num_state_slots
= 0;
2061 this->data
.param_index
= 0;
2062 this->data
.stream
= 0;
2063 this->data
.xfb_buffer
= -1;
2064 this->data
.xfb_stride
= -1;
2066 this->interface_type
= NULL
;
2069 if (type
->is_interface())
2070 this->init_interface_type(type
);
2071 else if (type
->without_array()->is_interface())
2072 this->init_interface_type(type
->without_array());
2078 interpolation_string(unsigned interpolation
)
2080 switch (interpolation
) {
2081 case INTERP_MODE_NONE
: return "no";
2082 case INTERP_MODE_SMOOTH
: return "smooth";
2083 case INTERP_MODE_FLAT
: return "flat";
2084 case INTERP_MODE_NOPERSPECTIVE
: return "noperspective";
2087 assert(!"Should not get here.");
2091 const char *const ir_variable::warn_extension_table
[] = {
2093 "GL_ARB_shader_stencil_export",
2094 "GL_AMD_shader_stencil_export",
2098 ir_variable::enable_extension_warning(const char *extension
)
2100 for (unsigned i
= 0; i
< ARRAY_SIZE(warn_extension_table
); i
++) {
2101 if (strcmp(warn_extension_table
[i
], extension
) == 0) {
2102 this->data
.warn_extension_index
= i
;
2107 assert(!"Should not get here.");
2108 this->data
.warn_extension_index
= 0;
2112 ir_variable::get_extension_warning() const
2114 return this->data
.warn_extension_index
== 0
2115 ? NULL
: warn_extension_table
[this->data
.warn_extension_index
];
2118 ir_function_signature::ir_function_signature(const glsl_type
*return_type
,
2119 builtin_available_predicate b
)
2120 : ir_instruction(ir_type_function_signature
),
2121 return_type(return_type
), is_defined(false),
2122 return_precision(GLSL_PRECISION_NONE
),
2123 intrinsic_id(ir_intrinsic_invalid
), builtin_avail(b
), _function(NULL
)
2125 this->origin
= NULL
;
2130 ir_function_signature::is_builtin() const
2132 return builtin_avail
!= NULL
;
2137 ir_function_signature::is_builtin_available(const _mesa_glsl_parse_state
*state
) const
2139 /* We can't call the predicate without a state pointer, so just say that
2140 * the signature is available. At compile time, we need the filtering,
2141 * but also receive a valid state pointer. At link time, we're resolving
2142 * imported built-in prototypes to their definitions, which will always
2143 * be an exact match. So we can skip the filtering.
2148 assert(builtin_avail
!= NULL
);
2149 return builtin_avail(state
);
2154 modes_match(unsigned a
, unsigned b
)
2159 /* Accept "in" vs. "const in" */
2160 if ((a
== ir_var_const_in
&& b
== ir_var_function_in
) ||
2161 (b
== ir_var_const_in
&& a
== ir_var_function_in
))
2169 ir_function_signature::qualifiers_match(exec_list
*params
)
2171 /* check that the qualifiers match. */
2172 foreach_two_lists(a_node
, &this->parameters
, b_node
, params
) {
2173 ir_variable
*a
= (ir_variable
*) a_node
;
2174 ir_variable
*b
= (ir_variable
*) b_node
;
2176 if (a
->data
.read_only
!= b
->data
.read_only
||
2177 !modes_match(a
->data
.mode
, b
->data
.mode
) ||
2178 a
->data
.interpolation
!= b
->data
.interpolation
||
2179 a
->data
.centroid
!= b
->data
.centroid
||
2180 a
->data
.sample
!= b
->data
.sample
||
2181 a
->data
.patch
!= b
->data
.patch
||
2182 a
->data
.memory_read_only
!= b
->data
.memory_read_only
||
2183 a
->data
.memory_write_only
!= b
->data
.memory_write_only
||
2184 a
->data
.memory_coherent
!= b
->data
.memory_coherent
||
2185 a
->data
.memory_volatile
!= b
->data
.memory_volatile
||
2186 a
->data
.memory_restrict
!= b
->data
.memory_restrict
) {
2188 /* parameter a's qualifiers don't match */
2197 ir_function_signature::replace_parameters(exec_list
*new_params
)
2199 /* Destroy all of the previous parameter information. If the previous
2200 * parameter information comes from the function prototype, it may either
2201 * specify incorrect parameter names or not have names at all.
2203 new_params
->move_nodes_to(¶meters
);
2207 ir_function::ir_function(const char *name
)
2208 : ir_instruction(ir_type_function
)
2210 this->subroutine_index
= -1;
2211 this->name
= ralloc_strdup(this, name
);
2216 ir_function::has_user_signature()
2218 foreach_in_list(ir_function_signature
, sig
, &this->signatures
) {
2219 if (!sig
->is_builtin())
2227 ir_rvalue::error_value(void *mem_ctx
)
2229 ir_rvalue
*v
= new(mem_ctx
) ir_rvalue(ir_type_unset
);
2231 v
->type
= glsl_type::error_type
;
2237 visit_exec_list(exec_list
*list
, ir_visitor
*visitor
)
2239 foreach_in_list_safe(ir_instruction
, node
, list
) {
2240 node
->accept(visitor
);
2246 steal_memory(ir_instruction
*ir
, void *new_ctx
)
2248 ir_variable
*var
= ir
->as_variable();
2249 ir_function
*fn
= ir
->as_function();
2250 ir_constant
*constant
= ir
->as_constant();
2251 if (var
!= NULL
&& var
->constant_value
!= NULL
)
2252 steal_memory(var
->constant_value
, ir
);
2254 if (var
!= NULL
&& var
->constant_initializer
!= NULL
)
2255 steal_memory(var
->constant_initializer
, ir
);
2257 if (fn
!= NULL
&& fn
->subroutine_types
)
2258 ralloc_steal(new_ctx
, fn
->subroutine_types
);
2260 /* The components of aggregate constants are not visited by the normal
2261 * visitor, so steal their values by hand.
2263 if (constant
!= NULL
&&
2264 (constant
->type
->is_array() || constant
->type
->is_struct())) {
2265 for (unsigned int i
= 0; i
< constant
->type
->length
; i
++) {
2266 steal_memory(constant
->const_elements
[i
], ir
);
2270 ralloc_steal(new_ctx
, ir
);
2275 reparent_ir(exec_list
*list
, void *mem_ctx
)
2277 foreach_in_list(ir_instruction
, node
, list
) {
2278 visit_tree(node
, steal_memory
, mem_ctx
);
2284 try_min_one(ir_rvalue
*ir
)
2286 ir_expression
*expr
= ir
->as_expression();
2288 if (!expr
|| expr
->operation
!= ir_binop_min
)
2291 if (expr
->operands
[0]->is_one())
2292 return expr
->operands
[1];
2294 if (expr
->operands
[1]->is_one())
2295 return expr
->operands
[0];
2301 try_max_zero(ir_rvalue
*ir
)
2303 ir_expression
*expr
= ir
->as_expression();
2305 if (!expr
|| expr
->operation
!= ir_binop_max
)
2308 if (expr
->operands
[0]->is_zero())
2309 return expr
->operands
[1];
2311 if (expr
->operands
[1]->is_zero())
2312 return expr
->operands
[0];
2318 ir_rvalue::as_rvalue_to_saturate()
2320 ir_expression
*expr
= this->as_expression();
2325 ir_rvalue
*max_zero
= try_max_zero(expr
);
2327 return try_min_one(max_zero
);
2329 ir_rvalue
*min_one
= try_min_one(expr
);
2331 return try_max_zero(min_one
);
2340 vertices_per_prim(GLenum prim
)
2349 case GL_LINES_ADJACENCY
:
2351 case GL_TRIANGLES_ADJACENCY
:
2354 assert(!"Bad primitive");
2360 * Generate a string describing the mode of a variable
2363 mode_string(const ir_variable
*var
)
2365 switch (var
->data
.mode
) {
2367 return (var
->data
.read_only
) ? "global constant" : "global variable";
2369 case ir_var_uniform
:
2372 case ir_var_shader_storage
:
2375 case ir_var_shader_in
:
2376 return "shader input";
2378 case ir_var_shader_out
:
2379 return "shader output";
2381 case ir_var_function_in
:
2382 case ir_var_const_in
:
2383 return "function input";
2385 case ir_var_function_out
:
2386 return "function output";
2388 case ir_var_function_inout
:
2389 return "function inout";
2391 case ir_var_system_value
:
2392 return "shader input";
2394 case ir_var_temporary
:
2395 return "compiler temporary";
2397 case ir_var_mode_count
:
2401 assert(!"Should not get here.");
2402 return "invalid variable";