2 * Copyright © 2010 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 #include "main/core.h" /* for MAX2 */
26 #include "compiler/glsl_types.h"
27 #include "glsl_parser_extras.h"
30 ir_rvalue::ir_rvalue(enum ir_node_type t
)
33 this->type
= glsl_type::error_type
;
36 bool ir_rvalue::is_zero() const
41 bool ir_rvalue::is_one() const
46 bool ir_rvalue::is_negative_one() const
52 * Modify the swizzle make to move one component to another
54 * \param m IR swizzle to be modified
55 * \param from Component in the RHS that is to be swizzled
56 * \param to Desired swizzle location of \c from
59 update_rhs_swizzle(ir_swizzle_mask
&m
, unsigned from
, unsigned to
)
62 case 0: m
.x
= from
; break;
63 case 1: m
.y
= from
; break;
64 case 2: m
.z
= from
; break;
65 case 3: m
.w
= from
; break;
66 default: assert(!"Should not get here.");
71 ir_assignment::set_lhs(ir_rvalue
*lhs
)
74 bool swizzled
= false;
77 ir_swizzle
*swiz
= lhs
->as_swizzle();
82 unsigned write_mask
= 0;
83 ir_swizzle_mask rhs_swiz
= { 0, 0, 0, 0, 0, 0 };
85 for (unsigned i
= 0; i
< swiz
->mask
.num_components
; i
++) {
89 case 0: c
= swiz
->mask
.x
; break;
90 case 1: c
= swiz
->mask
.y
; break;
91 case 2: c
= swiz
->mask
.z
; break;
92 case 3: c
= swiz
->mask
.w
; break;
93 default: assert(!"Should not get here.");
96 write_mask
|= (((this->write_mask
>> i
) & 1) << c
);
97 update_rhs_swizzle(rhs_swiz
, i
, c
);
98 rhs_swiz
.num_components
= swiz
->val
->type
->vector_elements
;
101 this->write_mask
= write_mask
;
104 this->rhs
= new(mem_ctx
) ir_swizzle(this->rhs
, rhs_swiz
);
109 /* Now, RHS channels line up with the LHS writemask. Collapse it
110 * to just the channels that will be written.
112 ir_swizzle_mask rhs_swiz
= { 0, 0, 0, 0, 0, 0 };
114 for (int i
= 0; i
< 4; i
++) {
115 if (write_mask
& (1 << i
))
116 update_rhs_swizzle(rhs_swiz
, i
, rhs_chan
++);
118 rhs_swiz
.num_components
= rhs_chan
;
119 this->rhs
= new(mem_ctx
) ir_swizzle(this->rhs
, rhs_swiz
);
122 assert((lhs
== NULL
) || lhs
->as_dereference());
124 this->lhs
= (ir_dereference
*) lhs
;
128 ir_assignment::whole_variable_written()
130 ir_variable
*v
= this->lhs
->whole_variable_referenced();
135 if (v
->type
->is_scalar())
138 if (v
->type
->is_vector()) {
139 const unsigned mask
= (1U << v
->type
->vector_elements
) - 1;
141 if (mask
!= this->write_mask
)
145 /* Either all the vector components are assigned or the variable is some
146 * composite type (and the whole thing is assigned.
151 ir_assignment::ir_assignment(ir_dereference
*lhs
, ir_rvalue
*rhs
,
152 ir_rvalue
*condition
, unsigned write_mask
)
153 : ir_instruction(ir_type_assignment
)
155 this->condition
= condition
;
158 this->write_mask
= write_mask
;
160 if (lhs
->type
->is_scalar() || lhs
->type
->is_vector()) {
161 int lhs_components
= 0;
162 for (int i
= 0; i
< 4; i
++) {
163 if (write_mask
& (1 << i
))
167 assert(lhs_components
== this->rhs
->type
->vector_elements
);
171 ir_assignment::ir_assignment(ir_rvalue
*lhs
, ir_rvalue
*rhs
,
172 ir_rvalue
*condition
)
173 : ir_instruction(ir_type_assignment
)
175 this->condition
= condition
;
178 /* If the RHS is a vector type, assume that all components of the vector
179 * type are being written to the LHS. The write mask comes from the RHS
180 * because we can have a case where the LHS is a vec4 and the RHS is a
181 * vec3. In that case, the assignment is:
183 * (assign (...) (xyz) (var_ref lhs) (var_ref rhs))
185 if (rhs
->type
->is_vector())
186 this->write_mask
= (1U << rhs
->type
->vector_elements
) - 1;
187 else if (rhs
->type
->is_scalar())
188 this->write_mask
= 1;
190 this->write_mask
= 0;
195 ir_expression::ir_expression(int op
, const struct glsl_type
*type
,
196 ir_rvalue
*op0
, ir_rvalue
*op1
,
197 ir_rvalue
*op2
, ir_rvalue
*op3
)
198 : ir_rvalue(ir_type_expression
)
201 this->operation
= ir_expression_operation(op
);
202 this->operands
[0] = op0
;
203 this->operands
[1] = op1
;
204 this->operands
[2] = op2
;
205 this->operands
[3] = op3
;
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
:
261 case ir_unop_saturate
:
262 this->type
= op0
->type
;
269 case ir_unop_bitcast_f2i
:
270 case ir_unop_bit_count
:
271 case ir_unop_find_msb
:
272 case ir_unop_find_lsb
:
273 case ir_unop_subroutine_to_int
:
276 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
,
277 op0
->type
->vector_elements
, 1);
284 case ir_unop_bitcast_i2f
:
285 case ir_unop_bitcast_u2f
:
288 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
,
289 op0
->type
->vector_elements
, 1);
296 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
,
297 op0
->type
->vector_elements
, 1);
305 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
,
306 op0
->type
->vector_elements
, 1);
312 case ir_unop_bitcast_f2u
:
315 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT
,
316 op0
->type
->vector_elements
, 1);
324 case ir_unop_u642i64
:
325 this->type
= glsl_type::get_instance(GLSL_TYPE_INT64
,
326 op0
->type
->vector_elements
, 1);
333 case ir_unop_i642u64
:
334 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT64
,
335 op0
->type
->vector_elements
, 1);
338 this->type
= glsl_type::float_type
;
341 case ir_unop_unpack_double_2x32
:
342 case ir_unop_unpack_uint_2x32
:
343 this->type
= glsl_type::uvec2_type
;
346 case ir_unop_unpack_int_2x32
:
347 this->type
= glsl_type::ivec2_type
;
350 case ir_unop_pack_snorm_2x16
:
351 case ir_unop_pack_snorm_4x8
:
352 case ir_unop_pack_unorm_2x16
:
353 case ir_unop_pack_unorm_4x8
:
354 case ir_unop_pack_half_2x16
:
355 this->type
= glsl_type::uint_type
;
358 case ir_unop_pack_double_2x32
:
359 this->type
= glsl_type::double_type
;
362 case ir_unop_pack_int_2x32
:
363 this->type
= glsl_type::int64_t_type
;
366 case ir_unop_pack_uint_2x32
:
367 this->type
= glsl_type::uint64_t_type
;
370 case ir_unop_unpack_snorm_2x16
:
371 case ir_unop_unpack_unorm_2x16
:
372 case ir_unop_unpack_half_2x16
:
373 this->type
= glsl_type::vec2_type
;
376 case ir_unop_unpack_snorm_4x8
:
377 case ir_unop_unpack_unorm_4x8
:
378 this->type
= glsl_type::vec4_type
;
381 case ir_unop_unpack_sampler_2x32
:
382 case ir_unop_unpack_image_2x32
:
383 this->type
= glsl_type::uvec2_type
;
386 case ir_unop_pack_sampler_2x32
:
387 case ir_unop_pack_image_2x32
:
388 this->type
= op0
->type
;
391 case ir_unop_frexp_sig
:
392 this->type
= op0
->type
;
394 case ir_unop_frexp_exp
:
395 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
,
396 op0
->type
->vector_elements
, 1);
399 case ir_unop_get_buffer_size
:
400 case ir_unop_ssbo_unsized_array_length
:
401 this->type
= glsl_type::int_type
;
404 case ir_unop_bitcast_i642d
:
405 case ir_unop_bitcast_u642d
:
406 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
,
407 op0
->type
->vector_elements
, 1);
410 case ir_unop_bitcast_d2i64
:
411 this->type
= glsl_type::get_instance(GLSL_TYPE_INT64
,
412 op0
->type
->vector_elements
, 1);
414 case ir_unop_bitcast_d2u64
:
415 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT64
,
416 op0
->type
->vector_elements
, 1);
420 assert(!"not reached: missing automatic type setup for ir_expression");
421 this->type
= op0
->type
;
426 ir_expression::ir_expression(int op
, ir_rvalue
*op0
, ir_rvalue
*op1
)
427 : ir_rvalue(ir_type_expression
)
429 this->operation
= ir_expression_operation(op
);
430 this->operands
[0] = op0
;
431 this->operands
[1] = op1
;
432 this->operands
[2] = NULL
;
433 this->operands
[3] = NULL
;
435 assert(op
> ir_last_unop
);
437 assert(num_operands
== 2);
438 for (unsigned i
= 0; i
< num_operands
; i
++) {
439 assert(this->operands
[i
] != NULL
);
442 switch (this->operation
) {
443 case ir_binop_all_equal
:
444 case ir_binop_any_nequal
:
445 this->type
= glsl_type::bool_type
;
456 if (op0
->type
->is_scalar()) {
457 this->type
= op1
->type
;
458 } else if (op1
->type
->is_scalar()) {
459 this->type
= op0
->type
;
461 if (this->operation
== ir_binop_mul
) {
462 this->type
= glsl_type::get_mul_type(op0
->type
, op1
->type
);
464 assert(op0
->type
== op1
->type
);
465 this->type
= op0
->type
;
470 case ir_binop_logic_and
:
471 case ir_binop_logic_xor
:
472 case ir_binop_logic_or
:
473 case ir_binop_bit_and
:
474 case ir_binop_bit_xor
:
475 case ir_binop_bit_or
:
476 assert(!op0
->type
->is_matrix());
477 assert(!op1
->type
->is_matrix());
478 if (op0
->type
->is_scalar()) {
479 this->type
= op1
->type
;
480 } else if (op1
->type
->is_scalar()) {
481 this->type
= op0
->type
;
483 assert(op0
->type
->vector_elements
== op1
->type
->vector_elements
);
484 this->type
= op0
->type
;
489 case ir_binop_nequal
:
490 case ir_binop_lequal
:
491 case ir_binop_gequal
:
493 case ir_binop_greater
:
494 assert(op0
->type
== op1
->type
);
495 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
,
496 op0
->type
->vector_elements
, 1);
500 this->type
= op0
->type
->get_base_type();
503 case ir_binop_imul_high
:
505 case ir_binop_borrow
:
506 case ir_binop_lshift
:
507 case ir_binop_rshift
:
509 case ir_binop_interpolate_at_offset
:
510 case ir_binop_interpolate_at_sample
:
511 this->type
= op0
->type
;
514 case ir_binop_vector_extract
:
515 this->type
= op0
->type
->get_scalar_type();
519 assert(!"not reached: missing automatic type setup for ir_expression");
520 this->type
= glsl_type::float_type
;
524 ir_expression::ir_expression(int op
, ir_rvalue
*op0
, ir_rvalue
*op1
,
526 : ir_rvalue(ir_type_expression
)
528 this->operation
= ir_expression_operation(op
);
529 this->operands
[0] = op0
;
530 this->operands
[1] = op1
;
531 this->operands
[2] = op2
;
532 this->operands
[3] = NULL
;
534 assert(op
> ir_last_binop
&& op
<= ir_last_triop
);
536 assert(num_operands
== 3);
537 for (unsigned i
= 0; i
< num_operands
; i
++) {
538 assert(this->operands
[i
] != NULL
);
541 switch (this->operation
) {
544 case ir_triop_bitfield_extract
:
545 case ir_triop_vector_insert
:
546 this->type
= op0
->type
;
550 this->type
= op1
->type
;
554 assert(!"not reached: missing automatic type setup for ir_expression");
555 this->type
= glsl_type::float_type
;
560 * This is only here for ir_reader to used for testing purposes. Please use
561 * the precomputed num_operands field if you need the number of operands.
564 ir_expression::get_num_operands(ir_expression_operation op
)
566 assert(op
<= ir_last_opcode
);
568 if (op
<= ir_last_unop
)
571 if (op
<= ir_last_binop
)
574 if (op
<= ir_last_triop
)
577 if (op
<= ir_last_quadop
)
580 unreachable("Could not calculate number of operands");
583 #include "ir_expression_operation_strings.h"
586 depth_layout_string(ir_depth_layout layout
)
589 case ir_depth_layout_none
: return "";
590 case ir_depth_layout_any
: return "depth_any";
591 case ir_depth_layout_greater
: return "depth_greater";
592 case ir_depth_layout_less
: return "depth_less";
593 case ir_depth_layout_unchanged
: return "depth_unchanged";
601 ir_expression_operation
602 ir_expression::get_operator(const char *str
)
604 for (int op
= 0; op
<= int(ir_last_opcode
); op
++) {
605 if (strcmp(str
, ir_expression_operation_strings
[op
]) == 0)
606 return (ir_expression_operation
) op
;
608 return (ir_expression_operation
) -1;
612 ir_expression::variable_referenced() const
615 case ir_binop_vector_extract
:
616 case ir_triop_vector_insert
:
617 /* We get these for things like a[0] where a is a vector type. In these
618 * cases we want variable_referenced() to return the actual vector
619 * variable this is wrapping.
621 return operands
[0]->variable_referenced();
623 return ir_rvalue::variable_referenced();
627 ir_constant::ir_constant()
628 : ir_rvalue(ir_type_constant
)
630 this->array_elements
= NULL
;
633 ir_constant::ir_constant(const struct glsl_type
*type
,
634 const ir_constant_data
*data
)
635 : ir_rvalue(ir_type_constant
)
637 this->array_elements
= NULL
;
639 assert((type
->base_type
>= GLSL_TYPE_UINT
)
640 && (type
->base_type
<= GLSL_TYPE_IMAGE
));
643 memcpy(& this->value
, data
, sizeof(this->value
));
646 ir_constant::ir_constant(float f
, unsigned vector_elements
)
647 : ir_rvalue(ir_type_constant
)
649 assert(vector_elements
<= 4);
650 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
, vector_elements
, 1);
651 for (unsigned i
= 0; i
< vector_elements
; i
++) {
652 this->value
.f
[i
] = f
;
654 for (unsigned i
= vector_elements
; i
< 16; i
++) {
655 this->value
.f
[i
] = 0;
659 ir_constant::ir_constant(double d
, unsigned vector_elements
)
660 : ir_rvalue(ir_type_constant
)
662 assert(vector_elements
<= 4);
663 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
, vector_elements
, 1);
664 for (unsigned i
= 0; i
< vector_elements
; i
++) {
665 this->value
.d
[i
] = d
;
667 for (unsigned i
= vector_elements
; i
< 16; i
++) {
668 this->value
.d
[i
] = 0.0;
672 ir_constant::ir_constant(unsigned int u
, unsigned vector_elements
)
673 : ir_rvalue(ir_type_constant
)
675 assert(vector_elements
<= 4);
676 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT
, vector_elements
, 1);
677 for (unsigned i
= 0; i
< vector_elements
; i
++) {
678 this->value
.u
[i
] = u
;
680 for (unsigned i
= vector_elements
; i
< 16; i
++) {
681 this->value
.u
[i
] = 0;
685 ir_constant::ir_constant(int integer
, unsigned vector_elements
)
686 : ir_rvalue(ir_type_constant
)
688 assert(vector_elements
<= 4);
689 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
, vector_elements
, 1);
690 for (unsigned i
= 0; i
< vector_elements
; i
++) {
691 this->value
.i
[i
] = integer
;
693 for (unsigned i
= vector_elements
; i
< 16; i
++) {
694 this->value
.i
[i
] = 0;
698 ir_constant::ir_constant(uint64_t u64
, unsigned vector_elements
)
699 : ir_rvalue(ir_type_constant
)
701 assert(vector_elements
<= 4);
702 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT64
, vector_elements
, 1);
703 for (unsigned i
= 0; i
< vector_elements
; i
++) {
704 this->value
.u64
[i
] = u64
;
706 for (unsigned i
= vector_elements
; i
< 16; i
++) {
707 this->value
.u64
[i
] = 0;
711 ir_constant::ir_constant(int64_t int64
, unsigned vector_elements
)
712 : ir_rvalue(ir_type_constant
)
714 assert(vector_elements
<= 4);
715 this->type
= glsl_type::get_instance(GLSL_TYPE_INT64
, vector_elements
, 1);
716 for (unsigned i
= 0; i
< vector_elements
; i
++) {
717 this->value
.i64
[i
] = int64
;
719 for (unsigned i
= vector_elements
; i
< 16; i
++) {
720 this->value
.i64
[i
] = 0;
724 ir_constant::ir_constant(bool b
, unsigned vector_elements
)
725 : ir_rvalue(ir_type_constant
)
727 assert(vector_elements
<= 4);
728 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
, vector_elements
, 1);
729 for (unsigned i
= 0; i
< vector_elements
; i
++) {
730 this->value
.b
[i
] = b
;
732 for (unsigned i
= vector_elements
; i
< 16; i
++) {
733 this->value
.b
[i
] = false;
737 ir_constant::ir_constant(const ir_constant
*c
, unsigned i
)
738 : ir_rvalue(ir_type_constant
)
740 this->array_elements
= NULL
;
741 this->type
= c
->type
->get_base_type();
743 switch (this->type
->base_type
) {
744 case GLSL_TYPE_UINT
: this->value
.u
[0] = c
->value
.u
[i
]; break;
745 case GLSL_TYPE_INT
: this->value
.i
[0] = c
->value
.i
[i
]; break;
746 case GLSL_TYPE_FLOAT
: this->value
.f
[0] = c
->value
.f
[i
]; break;
747 case GLSL_TYPE_BOOL
: this->value
.b
[0] = c
->value
.b
[i
]; break;
748 case GLSL_TYPE_DOUBLE
: this->value
.d
[0] = c
->value
.d
[i
]; break;
749 default: assert(!"Should not get here."); break;
753 ir_constant::ir_constant(const struct glsl_type
*type
, exec_list
*value_list
)
754 : ir_rvalue(ir_type_constant
)
756 this->array_elements
= NULL
;
759 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
760 || type
->is_record() || type
->is_array());
762 if (type
->is_array()) {
763 this->array_elements
= ralloc_array(this, ir_constant
*, type
->length
);
765 foreach_in_list(ir_constant
, value
, value_list
) {
766 assert(value
->as_constant() != NULL
);
768 this->array_elements
[i
++] = value
;
773 /* If the constant is a record, the types of each of the entries in
774 * value_list must be a 1-for-1 match with the structure components. Each
775 * entry must also be a constant. Just move the nodes from the value_list
776 * to the list in the ir_constant.
778 /* FINISHME: Should there be some type checking and / or assertions here? */
779 /* FINISHME: Should the new constant take ownership of the nodes from
780 * FINISHME: value_list, or should it make copies?
782 if (type
->is_record()) {
783 value_list
->move_nodes_to(& this->components
);
787 for (unsigned i
= 0; i
< 16; i
++) {
788 this->value
.u
[i
] = 0;
791 ir_constant
*value
= (ir_constant
*) (value_list
->get_head_raw());
793 /* Constructors with exactly one scalar argument are special for vectors
794 * and matrices. For vectors, the scalar value is replicated to fill all
795 * the components. For matrices, the scalar fills the components of the
796 * diagonal while the rest is filled with 0.
798 if (value
->type
->is_scalar() && value
->next
->is_tail_sentinel()) {
799 if (type
->is_matrix()) {
800 /* Matrix - fill diagonal (rest is already set to 0) */
801 assert(type
->is_float() || type
->is_double());
802 for (unsigned i
= 0; i
< type
->matrix_columns
; i
++) {
803 if (type
->is_float())
804 this->value
.f
[i
* type
->vector_elements
+ i
] =
807 this->value
.d
[i
* type
->vector_elements
+ i
] =
811 /* Vector or scalar - fill all components */
812 switch (type
->base_type
) {
815 for (unsigned i
= 0; i
< type
->components(); i
++)
816 this->value
.u
[i
] = value
->value
.u
[0];
818 case GLSL_TYPE_FLOAT
:
819 for (unsigned i
= 0; i
< type
->components(); i
++)
820 this->value
.f
[i
] = value
->value
.f
[0];
822 case GLSL_TYPE_DOUBLE
:
823 for (unsigned i
= 0; i
< type
->components(); i
++)
824 this->value
.d
[i
] = value
->value
.d
[0];
826 case GLSL_TYPE_UINT64
:
827 case GLSL_TYPE_INT64
:
828 for (unsigned i
= 0; i
< type
->components(); i
++)
829 this->value
.u64
[i
] = value
->value
.u64
[0];
832 for (unsigned i
= 0; i
< type
->components(); i
++)
833 this->value
.b
[i
] = value
->value
.b
[0];
836 assert(!"Should not get here.");
843 if (type
->is_matrix() && value
->type
->is_matrix()) {
844 assert(value
->next
->is_tail_sentinel());
846 /* From section 5.4.2 of the GLSL 1.20 spec:
847 * "If a matrix is constructed from a matrix, then each component
848 * (column i, row j) in the result that has a corresponding component
849 * (column i, row j) in the argument will be initialized from there."
851 unsigned cols
= MIN2(type
->matrix_columns
, value
->type
->matrix_columns
);
852 unsigned rows
= MIN2(type
->vector_elements
, value
->type
->vector_elements
);
853 for (unsigned i
= 0; i
< cols
; i
++) {
854 for (unsigned j
= 0; j
< rows
; j
++) {
855 const unsigned src
= i
* value
->type
->vector_elements
+ j
;
856 const unsigned dst
= i
* type
->vector_elements
+ j
;
857 this->value
.f
[dst
] = value
->value
.f
[src
];
861 /* "All other components will be initialized to the identity matrix." */
862 for (unsigned i
= cols
; i
< type
->matrix_columns
; i
++)
863 this->value
.f
[i
* type
->vector_elements
+ i
] = 1.0;
868 /* Use each component from each entry in the value_list to initialize one
869 * component of the constant being constructed.
873 assert(value
->as_constant() != NULL
);
874 assert(!value
->is_tail_sentinel());
876 for (unsigned j
= 0; j
< value
->type
->components(); j
++) {
877 switch (type
->base_type
) {
879 this->value
.u
[i
] = value
->get_uint_component(j
);
882 this->value
.i
[i
] = value
->get_int_component(j
);
884 case GLSL_TYPE_FLOAT
:
885 this->value
.f
[i
] = value
->get_float_component(j
);
888 this->value
.b
[i
] = value
->get_bool_component(j
);
890 case GLSL_TYPE_DOUBLE
:
891 this->value
.d
[i
] = value
->get_double_component(j
);
893 case GLSL_TYPE_UINT64
:
894 this->value
.u64
[i
] = value
->get_uint64_component(j
);
896 case GLSL_TYPE_INT64
:
897 this->value
.i64
[i
] = value
->get_int64_component(j
);
900 /* FINISHME: What to do? Exceptions are not the answer.
906 if (i
>= type
->components())
910 if (i
>= type
->components())
911 break; /* avoid downcasting a list sentinel */
912 value
= (ir_constant
*) value
->next
;
917 ir_constant::zero(void *mem_ctx
, const glsl_type
*type
)
919 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
920 || type
->is_record() || type
->is_array());
922 ir_constant
*c
= new(mem_ctx
) ir_constant
;
924 memset(&c
->value
, 0, sizeof(c
->value
));
926 if (type
->is_array()) {
927 c
->array_elements
= ralloc_array(c
, ir_constant
*, type
->length
);
929 for (unsigned i
= 0; i
< type
->length
; i
++)
930 c
->array_elements
[i
] = ir_constant::zero(c
, type
->fields
.array
);
933 if (type
->is_record()) {
934 for (unsigned i
= 0; i
< type
->length
; i
++) {
935 ir_constant
*comp
= ir_constant::zero(mem_ctx
, type
->fields
.structure
[i
].type
);
936 c
->components
.push_tail(comp
);
944 ir_constant::get_bool_component(unsigned i
) const
946 switch (this->type
->base_type
) {
947 case GLSL_TYPE_UINT
: return this->value
.u
[i
] != 0;
948 case GLSL_TYPE_INT
: return this->value
.i
[i
] != 0;
949 case GLSL_TYPE_FLOAT
: return ((int)this->value
.f
[i
]) != 0;
950 case GLSL_TYPE_BOOL
: return this->value
.b
[i
];
951 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
] != 0.0;
952 case GLSL_TYPE_UINT64
: return this->value
.u64
[i
] != 0;
953 case GLSL_TYPE_INT64
: return this->value
.i64
[i
] != 0;
954 default: assert(!"Should not get here."); break;
957 /* Must return something to make the compiler happy. This is clearly an
964 ir_constant::get_float_component(unsigned i
) const
966 switch (this->type
->base_type
) {
967 case GLSL_TYPE_UINT
: return (float) this->value
.u
[i
];
968 case GLSL_TYPE_INT
: return (float) this->value
.i
[i
];
969 case GLSL_TYPE_FLOAT
: return this->value
.f
[i
];
970 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0f
: 0.0f
;
971 case GLSL_TYPE_DOUBLE
: return (float) this->value
.d
[i
];
972 case GLSL_TYPE_UINT64
: return (float) this->value
.u64
[i
];
973 case GLSL_TYPE_INT64
: return (float) this->value
.i64
[i
];
974 default: assert(!"Should not get here."); break;
977 /* Must return something to make the compiler happy. This is clearly an
984 ir_constant::get_double_component(unsigned i
) const
986 switch (this->type
->base_type
) {
987 case GLSL_TYPE_UINT
: return (double) this->value
.u
[i
];
988 case GLSL_TYPE_INT
: return (double) this->value
.i
[i
];
989 case GLSL_TYPE_FLOAT
: return (double) this->value
.f
[i
];
990 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0 : 0.0;
991 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
];
992 case GLSL_TYPE_UINT64
: return (double) this->value
.u64
[i
];
993 case GLSL_TYPE_INT64
: return (double) this->value
.i64
[i
];
994 default: assert(!"Should not get here."); break;
997 /* Must return something to make the compiler happy. This is clearly an
1004 ir_constant::get_int_component(unsigned i
) const
1006 switch (this->type
->base_type
) {
1007 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1008 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1009 case GLSL_TYPE_FLOAT
: return (int) this->value
.f
[i
];
1010 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1011 case GLSL_TYPE_DOUBLE
: return (int) this->value
.d
[i
];
1012 case GLSL_TYPE_UINT64
: return (int) this->value
.u64
[i
];
1013 case GLSL_TYPE_INT64
: return (int) this->value
.i64
[i
];
1014 default: assert(!"Should not get here."); break;
1017 /* Must return something to make the compiler happy. This is clearly an
1024 ir_constant::get_uint_component(unsigned i
) const
1026 switch (this->type
->base_type
) {
1027 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1028 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1029 case GLSL_TYPE_FLOAT
: return (unsigned) this->value
.f
[i
];
1030 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1031 case GLSL_TYPE_DOUBLE
: return (unsigned) this->value
.d
[i
];
1032 case GLSL_TYPE_UINT64
: return (unsigned) this->value
.u64
[i
];
1033 case GLSL_TYPE_INT64
: return (unsigned) this->value
.i64
[i
];
1034 default: assert(!"Should not get here."); break;
1037 /* Must return something to make the compiler happy. This is clearly an
1044 ir_constant::get_int64_component(unsigned i
) const
1046 switch (this->type
->base_type
) {
1047 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1048 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1049 case GLSL_TYPE_FLOAT
: return (int64_t) this->value
.f
[i
];
1050 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1051 case GLSL_TYPE_DOUBLE
: return (int64_t) this->value
.d
[i
];
1052 case GLSL_TYPE_UINT64
: return (int64_t) this->value
.u64
[i
];
1053 case GLSL_TYPE_INT64
: return this->value
.i64
[i
];
1054 default: assert(!"Should not get here."); break;
1057 /* Must return something to make the compiler happy. This is clearly an
1064 ir_constant::get_uint64_component(unsigned i
) const
1066 switch (this->type
->base_type
) {
1067 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1068 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1069 case GLSL_TYPE_FLOAT
: return (uint64_t) this->value
.f
[i
];
1070 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1071 case GLSL_TYPE_DOUBLE
: return (uint64_t) this->value
.d
[i
];
1072 case GLSL_TYPE_UINT64
: return this->value
.u64
[i
];
1073 case GLSL_TYPE_INT64
: return (uint64_t) this->value
.i64
[i
];
1074 default: assert(!"Should not get here."); break;
1077 /* Must return something to make the compiler happy. This is clearly an
1084 ir_constant::get_array_element(unsigned i
) const
1086 assert(this->type
->is_array());
1088 /* From page 35 (page 41 of the PDF) of the GLSL 1.20 spec:
1090 * "Behavior is undefined if a shader subscripts an array with an index
1091 * less than 0 or greater than or equal to the size the array was
1094 * Most out-of-bounds accesses are removed before things could get this far.
1095 * There are cases where non-constant array index values can get constant
1100 else if (i
>= this->type
->length
)
1101 i
= this->type
->length
- 1;
1103 return array_elements
[i
];
1107 ir_constant::get_record_field(int idx
)
1112 if (this->components
.is_empty())
1115 exec_node
*node
= this->components
.get_head_raw();
1116 for (int i
= 0; i
< idx
; i
++) {
1119 /* If the end of the list is encountered before the element matching the
1120 * requested field is found, return NULL.
1122 if (node
->is_tail_sentinel())
1126 return (ir_constant
*) node
;
1130 ir_constant::copy_offset(ir_constant
*src
, int offset
)
1132 switch (this->type
->base_type
) {
1133 case GLSL_TYPE_UINT
:
1135 case GLSL_TYPE_FLOAT
:
1136 case GLSL_TYPE_DOUBLE
:
1137 case GLSL_TYPE_UINT64
:
1138 case GLSL_TYPE_INT64
:
1139 case GLSL_TYPE_BOOL
: {
1140 unsigned int size
= src
->type
->components();
1141 assert (size
<= this->type
->components() - offset
);
1142 for (unsigned int i
=0; i
<size
; i
++) {
1143 switch (this->type
->base_type
) {
1144 case GLSL_TYPE_UINT
:
1145 value
.u
[i
+offset
] = src
->get_uint_component(i
);
1148 value
.i
[i
+offset
] = src
->get_int_component(i
);
1150 case GLSL_TYPE_FLOAT
:
1151 value
.f
[i
+offset
] = src
->get_float_component(i
);
1153 case GLSL_TYPE_BOOL
:
1154 value
.b
[i
+offset
] = src
->get_bool_component(i
);
1156 case GLSL_TYPE_DOUBLE
:
1157 value
.d
[i
+offset
] = src
->get_double_component(i
);
1159 case GLSL_TYPE_UINT64
:
1160 value
.u64
[i
+offset
] = src
->get_uint64_component(i
);
1162 case GLSL_TYPE_INT64
:
1163 value
.i64
[i
+offset
] = src
->get_int64_component(i
);
1165 default: // Shut up the compiler
1172 case GLSL_TYPE_STRUCT
: {
1173 assert (src
->type
== this->type
);
1174 this->components
.make_empty();
1175 foreach_in_list(ir_constant
, orig
, &src
->components
) {
1176 this->components
.push_tail(orig
->clone(this, NULL
));
1181 case GLSL_TYPE_ARRAY
: {
1182 assert (src
->type
== this->type
);
1183 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1184 this->array_elements
[i
] = src
->array_elements
[i
]->clone(this, NULL
);
1190 assert(!"Should not get here.");
1196 ir_constant::copy_masked_offset(ir_constant
*src
, int offset
, unsigned int mask
)
1198 assert (!type
->is_array() && !type
->is_record());
1200 if (!type
->is_vector() && !type
->is_matrix()) {
1206 for (int i
=0; i
<4; i
++) {
1207 if (mask
& (1 << i
)) {
1208 switch (this->type
->base_type
) {
1209 case GLSL_TYPE_UINT
:
1210 value
.u
[i
+offset
] = src
->get_uint_component(id
++);
1213 value
.i
[i
+offset
] = src
->get_int_component(id
++);
1215 case GLSL_TYPE_FLOAT
:
1216 value
.f
[i
+offset
] = src
->get_float_component(id
++);
1218 case GLSL_TYPE_BOOL
:
1219 value
.b
[i
+offset
] = src
->get_bool_component(id
++);
1221 case GLSL_TYPE_DOUBLE
:
1222 value
.d
[i
+offset
] = src
->get_double_component(id
++);
1224 case GLSL_TYPE_UINT64
:
1225 value
.u64
[i
+offset
] = src
->get_uint64_component(id
++);
1227 case GLSL_TYPE_INT64
:
1228 value
.i64
[i
+offset
] = src
->get_int64_component(id
++);
1231 assert(!"Should not get here.");
1239 ir_constant::has_value(const ir_constant
*c
) const
1241 if (this->type
!= c
->type
)
1244 if (this->type
->is_array()) {
1245 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1246 if (!this->array_elements
[i
]->has_value(c
->array_elements
[i
]))
1252 if (this->type
->is_record()) {
1253 const exec_node
*a_node
= this->components
.get_head_raw();
1254 const exec_node
*b_node
= c
->components
.get_head_raw();
1256 while (!a_node
->is_tail_sentinel()) {
1257 assert(!b_node
->is_tail_sentinel());
1259 const ir_constant
*const a_field
= (ir_constant
*) a_node
;
1260 const ir_constant
*const b_field
= (ir_constant
*) b_node
;
1262 if (!a_field
->has_value(b_field
))
1265 a_node
= a_node
->next
;
1266 b_node
= b_node
->next
;
1272 for (unsigned i
= 0; i
< this->type
->components(); i
++) {
1273 switch (this->type
->base_type
) {
1274 case GLSL_TYPE_UINT
:
1275 if (this->value
.u
[i
] != c
->value
.u
[i
])
1279 if (this->value
.i
[i
] != c
->value
.i
[i
])
1282 case GLSL_TYPE_FLOAT
:
1283 if (this->value
.f
[i
] != c
->value
.f
[i
])
1286 case GLSL_TYPE_BOOL
:
1287 if (this->value
.b
[i
] != c
->value
.b
[i
])
1290 case GLSL_TYPE_DOUBLE
:
1291 if (this->value
.d
[i
] != c
->value
.d
[i
])
1294 case GLSL_TYPE_UINT64
:
1295 if (this->value
.u64
[i
] != c
->value
.u64
[i
])
1298 case GLSL_TYPE_INT64
:
1299 if (this->value
.i64
[i
] != c
->value
.i64
[i
])
1303 assert(!"Should not get here.");
1312 ir_constant::is_value(float f
, int i
) const
1314 if (!this->type
->is_scalar() && !this->type
->is_vector())
1317 /* Only accept boolean values for 0/1. */
1318 if (int(bool(i
)) != i
&& this->type
->is_boolean())
1321 for (unsigned c
= 0; c
< this->type
->vector_elements
; c
++) {
1322 switch (this->type
->base_type
) {
1323 case GLSL_TYPE_FLOAT
:
1324 if (this->value
.f
[c
] != f
)
1328 if (this->value
.i
[c
] != i
)
1331 case GLSL_TYPE_UINT
:
1332 if (this->value
.u
[c
] != unsigned(i
))
1335 case GLSL_TYPE_BOOL
:
1336 if (this->value
.b
[c
] != bool(i
))
1339 case GLSL_TYPE_DOUBLE
:
1340 if (this->value
.d
[c
] != double(f
))
1343 case GLSL_TYPE_UINT64
:
1344 if (this->value
.u64
[c
] != uint64_t(i
))
1347 case GLSL_TYPE_INT64
:
1348 if (this->value
.i64
[c
] != i
)
1352 /* The only other base types are structures, arrays, and samplers.
1353 * Samplers cannot be constants, and the others should have been
1354 * filtered out above.
1356 assert(!"Should not get here.");
1365 ir_constant::is_zero() const
1367 return is_value(0.0, 0);
1371 ir_constant::is_one() const
1373 return is_value(1.0, 1);
1377 ir_constant::is_negative_one() const
1379 return is_value(-1.0, -1);
1383 ir_constant::is_uint16_constant() const
1385 if (!type
->is_integer())
1388 return value
.u
[0] < (1 << 16);
1392 : ir_instruction(ir_type_loop
)
1397 ir_dereference_variable::ir_dereference_variable(ir_variable
*var
)
1398 : ir_dereference(ir_type_dereference_variable
)
1400 assert(var
!= NULL
);
1403 this->type
= var
->type
;
1407 ir_dereference_array::ir_dereference_array(ir_rvalue
*value
,
1408 ir_rvalue
*array_index
)
1409 : ir_dereference(ir_type_dereference_array
)
1411 this->array_index
= array_index
;
1412 this->set_array(value
);
1416 ir_dereference_array::ir_dereference_array(ir_variable
*var
,
1417 ir_rvalue
*array_index
)
1418 : ir_dereference(ir_type_dereference_array
)
1420 void *ctx
= ralloc_parent(var
);
1422 this->array_index
= array_index
;
1423 this->set_array(new(ctx
) ir_dereference_variable(var
));
1428 ir_dereference_array::set_array(ir_rvalue
*value
)
1430 assert(value
!= NULL
);
1432 this->array
= value
;
1434 const glsl_type
*const vt
= this->array
->type
;
1436 if (vt
->is_array()) {
1437 type
= vt
->fields
.array
;
1438 } else if (vt
->is_matrix()) {
1439 type
= vt
->column_type();
1440 } else if (vt
->is_vector()) {
1441 type
= vt
->get_base_type();
1446 ir_dereference_record::ir_dereference_record(ir_rvalue
*value
,
1448 : ir_dereference(ir_type_dereference_record
)
1450 assert(value
!= NULL
);
1452 this->record
= value
;
1453 this->type
= this->record
->type
->field_type(field
);
1454 this->field_idx
= this->record
->type
->field_index(field
);
1458 ir_dereference_record::ir_dereference_record(ir_variable
*var
,
1460 : ir_dereference(ir_type_dereference_record
)
1462 void *ctx
= ralloc_parent(var
);
1464 this->record
= new(ctx
) ir_dereference_variable(var
);
1465 this->type
= this->record
->type
->field_type(field
);
1466 this->field_idx
= this->record
->type
->field_index(field
);
1470 ir_dereference::is_lvalue(const struct _mesa_glsl_parse_state
*state
) const
1472 ir_variable
*var
= this->variable_referenced();
1474 /* Every l-value derference chain eventually ends in a variable.
1476 if ((var
== NULL
) || var
->data
.read_only
)
1479 /* From section 4.1.7 of the ARB_bindless_texture spec:
1481 * "Samplers can be used as l-values, so can be assigned into and used as
1482 * "out" and "inout" function parameters."
1484 * From section 4.1.X of the ARB_bindless_texture spec:
1486 * "Images can be used as l-values, so can be assigned into and used as
1487 * "out" and "inout" function parameters."
1489 if ((!state
|| state
->has_bindless()) &&
1490 (this->type
->contains_sampler() || this->type
->contains_image()))
1493 /* From section 4.1.7 of the GLSL 4.40 spec:
1495 * "Opaque variables cannot be treated as l-values; hence cannot
1496 * be used as out or inout function parameters, nor can they be
1499 if (this->type
->contains_opaque())
1506 static const char * const tex_opcode_strs
[] = { "tex", "txb", "txl", "txd", "txf", "txf_ms", "txs", "lod", "tg4", "query_levels", "texture_samples", "samples_identical" };
1508 const char *ir_texture::opcode_string()
1510 assert((unsigned int) op
< ARRAY_SIZE(tex_opcode_strs
));
1511 return tex_opcode_strs
[op
];
1515 ir_texture::get_opcode(const char *str
)
1517 const int count
= sizeof(tex_opcode_strs
) / sizeof(tex_opcode_strs
[0]);
1518 for (int op
= 0; op
< count
; op
++) {
1519 if (strcmp(str
, tex_opcode_strs
[op
]) == 0)
1520 return (ir_texture_opcode
) op
;
1522 return (ir_texture_opcode
) -1;
1527 ir_texture::set_sampler(ir_dereference
*sampler
, const glsl_type
*type
)
1529 assert(sampler
!= NULL
);
1530 assert(type
!= NULL
);
1531 this->sampler
= sampler
;
1534 if (this->op
== ir_txs
|| this->op
== ir_query_levels
||
1535 this->op
== ir_texture_samples
) {
1536 assert(type
->base_type
== GLSL_TYPE_INT
);
1537 } else if (this->op
== ir_lod
) {
1538 assert(type
->vector_elements
== 2);
1539 assert(type
->is_float());
1540 } else if (this->op
== ir_samples_identical
) {
1541 assert(type
== glsl_type::bool_type
);
1542 assert(sampler
->type
->is_sampler());
1543 assert(sampler
->type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
);
1545 assert(sampler
->type
->sampled_type
== (int) type
->base_type
);
1546 if (sampler
->type
->sampler_shadow
)
1547 assert(type
->vector_elements
== 4 || type
->vector_elements
== 1);
1549 assert(type
->vector_elements
== 4);
1555 ir_swizzle::init_mask(const unsigned *comp
, unsigned count
)
1557 assert((count
>= 1) && (count
<= 4));
1559 memset(&this->mask
, 0, sizeof(this->mask
));
1560 this->mask
.num_components
= count
;
1562 unsigned dup_mask
= 0;
1565 assert(comp
[3] <= 3);
1566 dup_mask
|= (1U << comp
[3])
1567 & ((1U << comp
[0]) | (1U << comp
[1]) | (1U << comp
[2]));
1568 this->mask
.w
= comp
[3];
1571 assert(comp
[2] <= 3);
1572 dup_mask
|= (1U << comp
[2])
1573 & ((1U << comp
[0]) | (1U << comp
[1]));
1574 this->mask
.z
= comp
[2];
1577 assert(comp
[1] <= 3);
1578 dup_mask
|= (1U << comp
[1])
1579 & ((1U << comp
[0]));
1580 this->mask
.y
= comp
[1];
1583 assert(comp
[0] <= 3);
1584 this->mask
.x
= comp
[0];
1587 this->mask
.has_duplicates
= dup_mask
!= 0;
1589 /* Based on the number of elements in the swizzle and the base type
1590 * (i.e., float, int, unsigned, or bool) of the vector being swizzled,
1591 * generate the type of the resulting value.
1593 type
= glsl_type::get_instance(val
->type
->base_type
, mask
.num_components
, 1);
1596 ir_swizzle::ir_swizzle(ir_rvalue
*val
, unsigned x
, unsigned y
, unsigned z
,
1597 unsigned w
, unsigned count
)
1598 : ir_rvalue(ir_type_swizzle
), val(val
)
1600 const unsigned components
[4] = { x
, y
, z
, w
};
1601 this->init_mask(components
, count
);
1604 ir_swizzle::ir_swizzle(ir_rvalue
*val
, const unsigned *comp
,
1606 : ir_rvalue(ir_type_swizzle
), val(val
)
1608 this->init_mask(comp
, count
);
1611 ir_swizzle::ir_swizzle(ir_rvalue
*val
, ir_swizzle_mask mask
)
1612 : ir_rvalue(ir_type_swizzle
), val(val
), mask(mask
)
1614 this->type
= glsl_type::get_instance(val
->type
->base_type
,
1615 mask
.num_components
, 1);
1624 ir_swizzle::create(ir_rvalue
*val
, const char *str
, unsigned vector_length
)
1626 void *ctx
= ralloc_parent(val
);
1628 /* For each possible swizzle character, this table encodes the value in
1629 * \c idx_map that represents the 0th element of the vector. For invalid
1630 * swizzle characters (e.g., 'k'), a special value is used that will allow
1631 * detection of errors.
1633 static const unsigned char base_idx
[26] = {
1634 /* a b c d e f g h i j k l m */
1635 R
, R
, I
, I
, I
, I
, R
, I
, I
, I
, I
, I
, I
,
1636 /* n o p q r s t u v w x y z */
1637 I
, I
, S
, S
, R
, S
, S
, I
, I
, X
, X
, X
, X
1640 /* Each valid swizzle character has an entry in the previous table. This
1641 * table encodes the base index encoded in the previous table plus the actual
1642 * index of the swizzle character. When processing swizzles, the first
1643 * character in the string is indexed in the previous table. Each character
1644 * in the string is indexed in this table, and the value found there has the
1645 * value form the first table subtracted. The result must be on the range
1648 * For example, the string "wzyx" will get X from the first table. Each of
1649 * the charcaters will get X+3, X+2, X+1, and X+0 from this table. After
1650 * subtraction, the swizzle values are { 3, 2, 1, 0 }.
1652 * The string "wzrg" will get X from the first table. Each of the characters
1653 * will get X+3, X+2, R+0, and R+1 from this table. After subtraction, the
1654 * swizzle values are { 3, 2, 4, 5 }. Since 4 and 5 are outside the range
1655 * [0,3], the error is detected.
1657 static const unsigned char idx_map
[26] = {
1658 /* a b c d e f g h i j k l m */
1659 R
+3, R
+2, 0, 0, 0, 0, R
+1, 0, 0, 0, 0, 0, 0,
1660 /* n o p q r s t u v w x y z */
1661 0, 0, S
+2, S
+3, R
+0, S
+0, S
+1, 0, 0, X
+3, X
+0, X
+1, X
+2
1664 int swiz_idx
[4] = { 0, 0, 0, 0 };
1668 /* Validate the first character in the swizzle string and look up the base
1669 * index value as described above.
1671 if ((str
[0] < 'a') || (str
[0] > 'z'))
1674 const unsigned base
= base_idx
[str
[0] - 'a'];
1677 for (i
= 0; (i
< 4) && (str
[i
] != '\0'); i
++) {
1678 /* Validate the next character, and, as described above, convert it to a
1681 if ((str
[i
] < 'a') || (str
[i
] > 'z'))
1684 swiz_idx
[i
] = idx_map
[str
[i
] - 'a'] - base
;
1685 if ((swiz_idx
[i
] < 0) || (swiz_idx
[i
] >= (int) vector_length
))
1692 return new(ctx
) ir_swizzle(val
, swiz_idx
[0], swiz_idx
[1], swiz_idx
[2],
1702 ir_swizzle::variable_referenced() const
1704 return this->val
->variable_referenced();
1708 bool ir_variable::temporaries_allocate_names
= false;
1710 const char ir_variable::tmp_name
[] = "compiler_temp";
1712 ir_variable::ir_variable(const struct glsl_type
*type
, const char *name
,
1713 ir_variable_mode mode
)
1714 : ir_instruction(ir_type_variable
)
1718 if (mode
== ir_var_temporary
&& !ir_variable::temporaries_allocate_names
)
1721 /* The ir_variable clone method may call this constructor with name set to
1725 || mode
== ir_var_temporary
1726 || mode
== ir_var_function_in
1727 || mode
== ir_var_function_out
1728 || mode
== ir_var_function_inout
);
1729 assert(name
!= ir_variable::tmp_name
1730 || mode
== ir_var_temporary
);
1731 if (mode
== ir_var_temporary
1732 && (name
== NULL
|| name
== ir_variable::tmp_name
)) {
1733 this->name
= ir_variable::tmp_name
;
1734 } else if (name
== NULL
||
1735 strlen(name
) < ARRAY_SIZE(this->name_storage
)) {
1736 strcpy(this->name_storage
, name
? name
: "");
1737 this->name
= this->name_storage
;
1739 this->name
= ralloc_strdup(this, name
);
1742 this->u
.max_ifc_array_access
= NULL
;
1744 this->data
.explicit_location
= false;
1745 this->data
.has_initializer
= false;
1746 this->data
.location
= -1;
1747 this->data
.location_frac
= 0;
1748 this->data
.binding
= 0;
1749 this->data
.warn_extension_index
= 0;
1750 this->constant_value
= NULL
;
1751 this->constant_initializer
= NULL
;
1752 this->data
.origin_upper_left
= false;
1753 this->data
.pixel_center_integer
= false;
1754 this->data
.depth_layout
= ir_depth_layout_none
;
1755 this->data
.used
= false;
1756 this->data
.always_active_io
= false;
1757 this->data
.read_only
= false;
1758 this->data
.centroid
= false;
1759 this->data
.sample
= false;
1760 this->data
.patch
= false;
1761 this->data
.invariant
= false;
1762 this->data
.how_declared
= ir_var_declared_normally
;
1763 this->data
.mode
= mode
;
1764 this->data
.interpolation
= INTERP_MODE_NONE
;
1765 this->data
.max_array_access
= -1;
1766 this->data
.offset
= 0;
1767 this->data
.precision
= GLSL_PRECISION_NONE
;
1768 this->data
.memory_read_only
= false;
1769 this->data
.memory_write_only
= false;
1770 this->data
.memory_coherent
= false;
1771 this->data
.memory_volatile
= false;
1772 this->data
.memory_restrict
= false;
1773 this->data
.from_ssbo_unsized_array
= false;
1774 this->data
.fb_fetch_output
= false;
1775 this->data
.bindless
= false;
1776 this->data
.bound
= false;
1779 if (type
->is_interface())
1780 this->init_interface_type(type
);
1781 else if (type
->without_array()->is_interface())
1782 this->init_interface_type(type
->without_array());
1788 interpolation_string(unsigned interpolation
)
1790 switch (interpolation
) {
1791 case INTERP_MODE_NONE
: return "no";
1792 case INTERP_MODE_SMOOTH
: return "smooth";
1793 case INTERP_MODE_FLAT
: return "flat";
1794 case INTERP_MODE_NOPERSPECTIVE
: return "noperspective";
1797 assert(!"Should not get here.");
1801 const char *const ir_variable::warn_extension_table
[] = {
1803 "GL_ARB_shader_stencil_export",
1804 "GL_AMD_shader_stencil_export",
1808 ir_variable::enable_extension_warning(const char *extension
)
1810 for (unsigned i
= 0; i
< ARRAY_SIZE(warn_extension_table
); i
++) {
1811 if (strcmp(warn_extension_table
[i
], extension
) == 0) {
1812 this->data
.warn_extension_index
= i
;
1817 assert(!"Should not get here.");
1818 this->data
.warn_extension_index
= 0;
1822 ir_variable::get_extension_warning() const
1824 return this->data
.warn_extension_index
== 0
1825 ? NULL
: warn_extension_table
[this->data
.warn_extension_index
];
1828 ir_function_signature::ir_function_signature(const glsl_type
*return_type
,
1829 builtin_available_predicate b
)
1830 : ir_instruction(ir_type_function_signature
),
1831 return_type(return_type
), is_defined(false),
1832 intrinsic_id(ir_intrinsic_invalid
), builtin_avail(b
), _function(NULL
)
1834 this->origin
= NULL
;
1839 ir_function_signature::is_builtin() const
1841 return builtin_avail
!= NULL
;
1846 ir_function_signature::is_builtin_available(const _mesa_glsl_parse_state
*state
) const
1848 /* We can't call the predicate without a state pointer, so just say that
1849 * the signature is available. At compile time, we need the filtering,
1850 * but also receive a valid state pointer. At link time, we're resolving
1851 * imported built-in prototypes to their definitions, which will always
1852 * be an exact match. So we can skip the filtering.
1857 assert(builtin_avail
!= NULL
);
1858 return builtin_avail(state
);
1863 modes_match(unsigned a
, unsigned b
)
1868 /* Accept "in" vs. "const in" */
1869 if ((a
== ir_var_const_in
&& b
== ir_var_function_in
) ||
1870 (b
== ir_var_const_in
&& a
== ir_var_function_in
))
1878 ir_function_signature::qualifiers_match(exec_list
*params
)
1880 /* check that the qualifiers match. */
1881 foreach_two_lists(a_node
, &this->parameters
, b_node
, params
) {
1882 ir_variable
*a
= (ir_variable
*) a_node
;
1883 ir_variable
*b
= (ir_variable
*) b_node
;
1885 if (a
->data
.read_only
!= b
->data
.read_only
||
1886 !modes_match(a
->data
.mode
, b
->data
.mode
) ||
1887 a
->data
.interpolation
!= b
->data
.interpolation
||
1888 a
->data
.centroid
!= b
->data
.centroid
||
1889 a
->data
.sample
!= b
->data
.sample
||
1890 a
->data
.patch
!= b
->data
.patch
||
1891 a
->data
.memory_read_only
!= b
->data
.memory_read_only
||
1892 a
->data
.memory_write_only
!= b
->data
.memory_write_only
||
1893 a
->data
.memory_coherent
!= b
->data
.memory_coherent
||
1894 a
->data
.memory_volatile
!= b
->data
.memory_volatile
||
1895 a
->data
.memory_restrict
!= b
->data
.memory_restrict
) {
1897 /* parameter a's qualifiers don't match */
1906 ir_function_signature::replace_parameters(exec_list
*new_params
)
1908 /* Destroy all of the previous parameter information. If the previous
1909 * parameter information comes from the function prototype, it may either
1910 * specify incorrect parameter names or not have names at all.
1912 new_params
->move_nodes_to(¶meters
);
1916 ir_function::ir_function(const char *name
)
1917 : ir_instruction(ir_type_function
)
1919 this->subroutine_index
= -1;
1920 this->name
= ralloc_strdup(this, name
);
1925 ir_function::has_user_signature()
1927 foreach_in_list(ir_function_signature
, sig
, &this->signatures
) {
1928 if (!sig
->is_builtin())
1936 ir_rvalue::error_value(void *mem_ctx
)
1938 ir_rvalue
*v
= new(mem_ctx
) ir_rvalue(ir_type_unset
);
1940 v
->type
= glsl_type::error_type
;
1946 visit_exec_list(exec_list
*list
, ir_visitor
*visitor
)
1948 foreach_in_list_safe(ir_instruction
, node
, list
) {
1949 node
->accept(visitor
);
1955 steal_memory(ir_instruction
*ir
, void *new_ctx
)
1957 ir_variable
*var
= ir
->as_variable();
1958 ir_function
*fn
= ir
->as_function();
1959 ir_constant
*constant
= ir
->as_constant();
1960 if (var
!= NULL
&& var
->constant_value
!= NULL
)
1961 steal_memory(var
->constant_value
, ir
);
1963 if (var
!= NULL
&& var
->constant_initializer
!= NULL
)
1964 steal_memory(var
->constant_initializer
, ir
);
1966 if (fn
!= NULL
&& fn
->subroutine_types
)
1967 ralloc_steal(new_ctx
, fn
->subroutine_types
);
1969 /* The components of aggregate constants are not visited by the normal
1970 * visitor, so steal their values by hand.
1972 if (constant
!= NULL
) {
1973 if (constant
->type
->is_record()) {
1974 foreach_in_list(ir_constant
, field
, &constant
->components
) {
1975 steal_memory(field
, ir
);
1977 } else if (constant
->type
->is_array()) {
1978 for (unsigned int i
= 0; i
< constant
->type
->length
; i
++) {
1979 steal_memory(constant
->array_elements
[i
], ir
);
1984 ralloc_steal(new_ctx
, ir
);
1989 reparent_ir(exec_list
*list
, void *mem_ctx
)
1991 foreach_in_list(ir_instruction
, node
, list
) {
1992 visit_tree(node
, steal_memory
, mem_ctx
);
1998 try_min_one(ir_rvalue
*ir
)
2000 ir_expression
*expr
= ir
->as_expression();
2002 if (!expr
|| expr
->operation
!= ir_binop_min
)
2005 if (expr
->operands
[0]->is_one())
2006 return expr
->operands
[1];
2008 if (expr
->operands
[1]->is_one())
2009 return expr
->operands
[0];
2015 try_max_zero(ir_rvalue
*ir
)
2017 ir_expression
*expr
= ir
->as_expression();
2019 if (!expr
|| expr
->operation
!= ir_binop_max
)
2022 if (expr
->operands
[0]->is_zero())
2023 return expr
->operands
[1];
2025 if (expr
->operands
[1]->is_zero())
2026 return expr
->operands
[0];
2032 ir_rvalue::as_rvalue_to_saturate()
2034 ir_expression
*expr
= this->as_expression();
2039 ir_rvalue
*max_zero
= try_max_zero(expr
);
2041 return try_min_one(max_zero
);
2043 ir_rvalue
*min_one
= try_min_one(expr
);
2045 return try_max_zero(min_one
);
2054 vertices_per_prim(GLenum prim
)
2063 case GL_LINES_ADJACENCY
:
2065 case GL_TRIANGLES_ADJACENCY
:
2068 assert(!"Bad primitive");
2074 * Generate a string describing the mode of a variable
2077 mode_string(const ir_variable
*var
)
2079 switch (var
->data
.mode
) {
2081 return (var
->data
.read_only
) ? "global constant" : "global variable";
2083 case ir_var_uniform
:
2086 case ir_var_shader_storage
:
2089 case ir_var_shader_in
:
2090 return "shader input";
2092 case ir_var_shader_out
:
2093 return "shader output";
2095 case ir_var_function_in
:
2096 case ir_var_const_in
:
2097 return "function input";
2099 case ir_var_function_out
:
2100 return "function output";
2102 case ir_var_function_inout
:
2103 return "function inout";
2105 case ir_var_system_value
:
2106 return "shader input";
2108 case ir_var_temporary
:
2109 return "compiler temporary";
2111 case ir_var_mode_count
:
2115 assert(!"Should not get here.");
2116 return "invalid variable";