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 "compiler/glsl_types.h"
26 #include "glsl_parser_extras.h"
29 ir_rvalue::ir_rvalue(enum ir_node_type t
)
32 this->type
= glsl_type::error_type
;
35 bool ir_rvalue::is_zero() const
40 bool ir_rvalue::is_one() const
45 bool ir_rvalue::is_negative_one() const
51 * Modify the swizzle make to move one component to another
53 * \param m IR swizzle to be modified
54 * \param from Component in the RHS that is to be swizzled
55 * \param to Desired swizzle location of \c from
58 update_rhs_swizzle(ir_swizzle_mask
&m
, unsigned from
, unsigned to
)
61 case 0: m
.x
= from
; break;
62 case 1: m
.y
= from
; break;
63 case 2: m
.z
= from
; break;
64 case 3: m
.w
= from
; break;
65 default: assert(!"Should not get here.");
70 ir_assignment::set_lhs(ir_rvalue
*lhs
)
73 bool swizzled
= false;
76 ir_swizzle
*swiz
= lhs
->as_swizzle();
81 unsigned write_mask
= 0;
82 ir_swizzle_mask rhs_swiz
= { 0, 0, 0, 0, 0, 0 };
84 for (unsigned i
= 0; i
< swiz
->mask
.num_components
; i
++) {
88 case 0: c
= swiz
->mask
.x
; break;
89 case 1: c
= swiz
->mask
.y
; break;
90 case 2: c
= swiz
->mask
.z
; break;
91 case 3: c
= swiz
->mask
.w
; break;
92 default: assert(!"Should not get here.");
95 write_mask
|= (((this->write_mask
>> i
) & 1) << c
);
96 update_rhs_swizzle(rhs_swiz
, i
, c
);
97 rhs_swiz
.num_components
= swiz
->val
->type
->vector_elements
;
100 this->write_mask
= write_mask
;
103 this->rhs
= new(mem_ctx
) ir_swizzle(this->rhs
, rhs_swiz
);
108 /* Now, RHS channels line up with the LHS writemask. Collapse it
109 * to just the channels that will be written.
111 ir_swizzle_mask rhs_swiz
= { 0, 0, 0, 0, 0, 0 };
113 for (int i
= 0; i
< 4; i
++) {
114 if (write_mask
& (1 << i
))
115 update_rhs_swizzle(rhs_swiz
, i
, rhs_chan
++);
117 rhs_swiz
.num_components
= rhs_chan
;
118 this->rhs
= new(mem_ctx
) ir_swizzle(this->rhs
, rhs_swiz
);
121 assert((lhs
== NULL
) || lhs
->as_dereference());
123 this->lhs
= (ir_dereference
*) lhs
;
127 ir_assignment::whole_variable_written()
129 ir_variable
*v
= this->lhs
->whole_variable_referenced();
134 if (v
->type
->is_scalar())
137 if (v
->type
->is_vector()) {
138 const unsigned mask
= (1U << v
->type
->vector_elements
) - 1;
140 if (mask
!= this->write_mask
)
144 /* Either all the vector components are assigned or the variable is some
145 * composite type (and the whole thing is assigned.
150 ir_assignment::ir_assignment(ir_dereference
*lhs
, ir_rvalue
*rhs
,
151 ir_rvalue
*condition
, unsigned write_mask
)
152 : ir_instruction(ir_type_assignment
)
154 this->condition
= condition
;
157 this->write_mask
= write_mask
;
159 if (lhs
->type
->is_scalar() || lhs
->type
->is_vector()) {
160 int lhs_components
= 0;
161 for (int i
= 0; i
< 4; i
++) {
162 if (write_mask
& (1 << i
))
166 assert(lhs_components
== this->rhs
->type
->vector_elements
);
170 ir_assignment::ir_assignment(ir_rvalue
*lhs
, ir_rvalue
*rhs
,
171 ir_rvalue
*condition
)
172 : ir_instruction(ir_type_assignment
)
174 this->condition
= condition
;
177 /* If the RHS is a vector type, assume that all components of the vector
178 * type are being written to the LHS. The write mask comes from the RHS
179 * because we can have a case where the LHS is a vec4 and the RHS is a
180 * vec3. In that case, the assignment is:
182 * (assign (...) (xyz) (var_ref lhs) (var_ref rhs))
184 if (rhs
->type
->is_vector())
185 this->write_mask
= (1U << rhs
->type
->vector_elements
) - 1;
186 else if (rhs
->type
->is_scalar())
187 this->write_mask
= 1;
189 this->write_mask
= 0;
194 ir_expression::ir_expression(int op
, const struct glsl_type
*type
,
195 ir_rvalue
*op0
, ir_rvalue
*op1
,
196 ir_rvalue
*op2
, ir_rvalue
*op3
)
197 : ir_rvalue(ir_type_expression
)
200 this->operation
= ir_expression_operation(op
);
201 this->operands
[0] = op0
;
202 this->operands
[1] = op1
;
203 this->operands
[2] = op2
;
204 this->operands
[3] = op3
;
208 for (unsigned i
= num_operands
; i
< 4; i
++) {
209 assert(this->operands
[i
] == NULL
);
212 for (unsigned i
= 0; i
< num_operands
; i
++) {
213 assert(this->operands
[i
] != NULL
);
218 ir_expression::ir_expression(int op
, ir_rvalue
*op0
)
219 : ir_rvalue(ir_type_expression
)
221 this->operation
= ir_expression_operation(op
);
222 this->operands
[0] = op0
;
223 this->operands
[1] = NULL
;
224 this->operands
[2] = NULL
;
225 this->operands
[3] = NULL
;
227 assert(op
<= ir_last_unop
);
229 assert(num_operands
== 1);
230 assert(this->operands
[0]);
232 switch (this->operation
) {
233 case ir_unop_bit_not
:
234 case ir_unop_logic_not
:
249 case ir_unop_round_even
:
253 case ir_unop_dFdx_coarse
:
254 case ir_unop_dFdx_fine
:
256 case ir_unop_dFdy_coarse
:
257 case ir_unop_dFdy_fine
:
258 case ir_unop_bitfield_reverse
:
259 case ir_unop_interpolate_at_centroid
:
260 case ir_unop_saturate
:
261 this->type
= op0
->type
;
268 case ir_unop_bitcast_f2i
:
269 case ir_unop_bit_count
:
270 case ir_unop_find_msb
:
271 case ir_unop_find_lsb
:
272 case ir_unop_subroutine_to_int
:
275 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
,
276 op0
->type
->vector_elements
, 1);
283 case ir_unop_bitcast_i2f
:
284 case ir_unop_bitcast_u2f
:
287 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
,
288 op0
->type
->vector_elements
, 1);
295 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
,
296 op0
->type
->vector_elements
, 1);
304 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
,
305 op0
->type
->vector_elements
, 1);
311 case ir_unop_bitcast_f2u
:
314 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT
,
315 op0
->type
->vector_elements
, 1);
323 case ir_unop_u642i64
:
324 this->type
= glsl_type::get_instance(GLSL_TYPE_INT64
,
325 op0
->type
->vector_elements
, 1);
332 case ir_unop_i642u64
:
333 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT64
,
334 op0
->type
->vector_elements
, 1);
337 this->type
= glsl_type::float_type
;
340 case ir_unop_unpack_double_2x32
:
341 case ir_unop_unpack_uint_2x32
:
342 this->type
= glsl_type::uvec2_type
;
345 case ir_unop_unpack_int_2x32
:
346 this->type
= glsl_type::ivec2_type
;
349 case ir_unop_pack_snorm_2x16
:
350 case ir_unop_pack_snorm_4x8
:
351 case ir_unop_pack_unorm_2x16
:
352 case ir_unop_pack_unorm_4x8
:
353 case ir_unop_pack_half_2x16
:
354 this->type
= glsl_type::uint_type
;
357 case ir_unop_pack_double_2x32
:
358 this->type
= glsl_type::double_type
;
361 case ir_unop_pack_int_2x32
:
362 this->type
= glsl_type::int64_t_type
;
365 case ir_unop_pack_uint_2x32
:
366 this->type
= glsl_type::uint64_t_type
;
369 case ir_unop_unpack_snorm_2x16
:
370 case ir_unop_unpack_unorm_2x16
:
371 case ir_unop_unpack_half_2x16
:
372 this->type
= glsl_type::vec2_type
;
375 case ir_unop_unpack_snorm_4x8
:
376 case ir_unop_unpack_unorm_4x8
:
377 this->type
= glsl_type::vec4_type
;
380 case ir_unop_unpack_sampler_2x32
:
381 case ir_unop_unpack_image_2x32
:
382 this->type
= glsl_type::uvec2_type
;
385 case ir_unop_pack_sampler_2x32
:
386 case ir_unop_pack_image_2x32
:
387 this->type
= op0
->type
;
390 case ir_unop_frexp_sig
:
391 this->type
= op0
->type
;
393 case ir_unop_frexp_exp
:
394 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
,
395 op0
->type
->vector_elements
, 1);
398 case ir_unop_get_buffer_size
:
399 case ir_unop_ssbo_unsized_array_length
:
400 this->type
= glsl_type::int_type
;
403 case ir_unop_bitcast_i642d
:
404 case ir_unop_bitcast_u642d
:
405 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
,
406 op0
->type
->vector_elements
, 1);
409 case ir_unop_bitcast_d2i64
:
410 this->type
= glsl_type::get_instance(GLSL_TYPE_INT64
,
411 op0
->type
->vector_elements
, 1);
413 case ir_unop_bitcast_d2u64
:
414 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT64
,
415 op0
->type
->vector_elements
, 1);
419 assert(!"not reached: missing automatic type setup for ir_expression");
420 this->type
= op0
->type
;
425 ir_expression::ir_expression(int op
, ir_rvalue
*op0
, ir_rvalue
*op1
)
426 : ir_rvalue(ir_type_expression
)
428 this->operation
= ir_expression_operation(op
);
429 this->operands
[0] = op0
;
430 this->operands
[1] = op1
;
431 this->operands
[2] = NULL
;
432 this->operands
[3] = NULL
;
434 assert(op
> ir_last_unop
);
436 assert(num_operands
== 2);
437 for (unsigned i
= 0; i
< num_operands
; i
++) {
438 assert(this->operands
[i
] != NULL
);
441 switch (this->operation
) {
442 case ir_binop_all_equal
:
443 case ir_binop_any_nequal
:
444 this->type
= glsl_type::bool_type
;
455 if (op0
->type
->is_scalar()) {
456 this->type
= op1
->type
;
457 } else if (op1
->type
->is_scalar()) {
458 this->type
= op0
->type
;
460 if (this->operation
== ir_binop_mul
) {
461 this->type
= glsl_type::get_mul_type(op0
->type
, op1
->type
);
463 assert(op0
->type
== op1
->type
);
464 this->type
= op0
->type
;
469 case ir_binop_logic_and
:
470 case ir_binop_logic_xor
:
471 case ir_binop_logic_or
:
472 case ir_binop_bit_and
:
473 case ir_binop_bit_xor
:
474 case ir_binop_bit_or
:
475 assert(!op0
->type
->is_matrix());
476 assert(!op1
->type
->is_matrix());
477 if (op0
->type
->is_scalar()) {
478 this->type
= op1
->type
;
479 } else if (op1
->type
->is_scalar()) {
480 this->type
= op0
->type
;
482 assert(op0
->type
->vector_elements
== op1
->type
->vector_elements
);
483 this->type
= op0
->type
;
488 case ir_binop_nequal
:
489 case ir_binop_gequal
:
491 assert(op0
->type
== op1
->type
);
492 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
,
493 op0
->type
->vector_elements
, 1);
497 this->type
= op0
->type
->get_base_type();
500 case ir_binop_imul_high
:
502 case ir_binop_borrow
:
503 case ir_binop_lshift
:
504 case ir_binop_rshift
:
506 case ir_binop_interpolate_at_offset
:
507 case ir_binop_interpolate_at_sample
:
508 this->type
= op0
->type
;
511 case ir_binop_vector_extract
:
512 this->type
= op0
->type
->get_scalar_type();
516 assert(!"not reached: missing automatic type setup for ir_expression");
517 this->type
= glsl_type::float_type
;
521 ir_expression::ir_expression(int op
, ir_rvalue
*op0
, ir_rvalue
*op1
,
523 : ir_rvalue(ir_type_expression
)
525 this->operation
= ir_expression_operation(op
);
526 this->operands
[0] = op0
;
527 this->operands
[1] = op1
;
528 this->operands
[2] = op2
;
529 this->operands
[3] = NULL
;
531 assert(op
> ir_last_binop
&& op
<= ir_last_triop
);
533 assert(num_operands
== 3);
534 for (unsigned i
= 0; i
< num_operands
; i
++) {
535 assert(this->operands
[i
] != NULL
);
538 switch (this->operation
) {
541 case ir_triop_bitfield_extract
:
542 case ir_triop_vector_insert
:
543 this->type
= op0
->type
;
547 this->type
= op1
->type
;
551 assert(!"not reached: missing automatic type setup for ir_expression");
552 this->type
= glsl_type::float_type
;
557 * This is only here for ir_reader to used for testing purposes. Please use
558 * the precomputed num_operands field if you need the number of operands.
561 ir_expression::get_num_operands(ir_expression_operation op
)
563 assert(op
<= ir_last_opcode
);
565 if (op
<= ir_last_unop
)
568 if (op
<= ir_last_binop
)
571 if (op
<= ir_last_triop
)
574 if (op
<= ir_last_quadop
)
577 unreachable("Could not calculate number of operands");
580 #include "ir_expression_operation_strings.h"
583 depth_layout_string(ir_depth_layout layout
)
586 case ir_depth_layout_none
: return "";
587 case ir_depth_layout_any
: return "depth_any";
588 case ir_depth_layout_greater
: return "depth_greater";
589 case ir_depth_layout_less
: return "depth_less";
590 case ir_depth_layout_unchanged
: return "depth_unchanged";
598 ir_expression_operation
599 ir_expression::get_operator(const char *str
)
601 for (int op
= 0; op
<= int(ir_last_opcode
); op
++) {
602 if (strcmp(str
, ir_expression_operation_strings
[op
]) == 0)
603 return (ir_expression_operation
) op
;
605 return (ir_expression_operation
) -1;
609 ir_expression::variable_referenced() const
612 case ir_binop_vector_extract
:
613 case ir_triop_vector_insert
:
614 /* We get these for things like a[0] where a is a vector type. In these
615 * cases we want variable_referenced() to return the actual vector
616 * variable this is wrapping.
618 return operands
[0]->variable_referenced();
620 return ir_rvalue::variable_referenced();
624 ir_constant::ir_constant()
625 : ir_rvalue(ir_type_constant
)
627 this->const_elements
= NULL
;
630 ir_constant::ir_constant(const struct glsl_type
*type
,
631 const ir_constant_data
*data
)
632 : ir_rvalue(ir_type_constant
)
634 this->const_elements
= NULL
;
636 assert((type
->base_type
>= GLSL_TYPE_UINT
)
637 && (type
->base_type
<= GLSL_TYPE_IMAGE
));
640 memcpy(& this->value
, data
, sizeof(this->value
));
643 ir_constant::ir_constant(float f
, unsigned vector_elements
)
644 : ir_rvalue(ir_type_constant
)
646 assert(vector_elements
<= 4);
647 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
, vector_elements
, 1);
648 for (unsigned i
= 0; i
< vector_elements
; i
++) {
649 this->value
.f
[i
] = f
;
651 for (unsigned i
= vector_elements
; i
< 16; i
++) {
652 this->value
.f
[i
] = 0;
656 ir_constant::ir_constant(double d
, unsigned vector_elements
)
657 : ir_rvalue(ir_type_constant
)
659 assert(vector_elements
<= 4);
660 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
, vector_elements
, 1);
661 for (unsigned i
= 0; i
< vector_elements
; i
++) {
662 this->value
.d
[i
] = d
;
664 for (unsigned i
= vector_elements
; i
< 16; i
++) {
665 this->value
.d
[i
] = 0.0;
669 ir_constant::ir_constant(unsigned int u
, unsigned vector_elements
)
670 : ir_rvalue(ir_type_constant
)
672 assert(vector_elements
<= 4);
673 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT
, vector_elements
, 1);
674 for (unsigned i
= 0; i
< vector_elements
; i
++) {
675 this->value
.u
[i
] = u
;
677 for (unsigned i
= vector_elements
; i
< 16; i
++) {
678 this->value
.u
[i
] = 0;
682 ir_constant::ir_constant(int integer
, unsigned vector_elements
)
683 : ir_rvalue(ir_type_constant
)
685 assert(vector_elements
<= 4);
686 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
, vector_elements
, 1);
687 for (unsigned i
= 0; i
< vector_elements
; i
++) {
688 this->value
.i
[i
] = integer
;
690 for (unsigned i
= vector_elements
; i
< 16; i
++) {
691 this->value
.i
[i
] = 0;
695 ir_constant::ir_constant(uint64_t u64
, unsigned vector_elements
)
696 : ir_rvalue(ir_type_constant
)
698 assert(vector_elements
<= 4);
699 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT64
, vector_elements
, 1);
700 for (unsigned i
= 0; i
< vector_elements
; i
++) {
701 this->value
.u64
[i
] = u64
;
703 for (unsigned i
= vector_elements
; i
< 16; i
++) {
704 this->value
.u64
[i
] = 0;
708 ir_constant::ir_constant(int64_t int64
, unsigned vector_elements
)
709 : ir_rvalue(ir_type_constant
)
711 assert(vector_elements
<= 4);
712 this->type
= glsl_type::get_instance(GLSL_TYPE_INT64
, vector_elements
, 1);
713 for (unsigned i
= 0; i
< vector_elements
; i
++) {
714 this->value
.i64
[i
] = int64
;
716 for (unsigned i
= vector_elements
; i
< 16; i
++) {
717 this->value
.i64
[i
] = 0;
721 ir_constant::ir_constant(bool b
, unsigned vector_elements
)
722 : ir_rvalue(ir_type_constant
)
724 assert(vector_elements
<= 4);
725 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
, vector_elements
, 1);
726 for (unsigned i
= 0; i
< vector_elements
; i
++) {
727 this->value
.b
[i
] = b
;
729 for (unsigned i
= vector_elements
; i
< 16; i
++) {
730 this->value
.b
[i
] = false;
734 ir_constant::ir_constant(const ir_constant
*c
, unsigned i
)
735 : ir_rvalue(ir_type_constant
)
737 this->const_elements
= NULL
;
738 this->type
= c
->type
->get_base_type();
740 switch (this->type
->base_type
) {
741 case GLSL_TYPE_UINT
: this->value
.u
[0] = c
->value
.u
[i
]; break;
742 case GLSL_TYPE_INT
: this->value
.i
[0] = c
->value
.i
[i
]; break;
743 case GLSL_TYPE_FLOAT
: this->value
.f
[0] = c
->value
.f
[i
]; break;
744 case GLSL_TYPE_BOOL
: this->value
.b
[0] = c
->value
.b
[i
]; break;
745 case GLSL_TYPE_DOUBLE
: this->value
.d
[0] = c
->value
.d
[i
]; break;
746 default: assert(!"Should not get here."); break;
750 ir_constant::ir_constant(const struct glsl_type
*type
, exec_list
*value_list
)
751 : ir_rvalue(ir_type_constant
)
753 this->const_elements
= NULL
;
756 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
757 || type
->is_struct() || type
->is_array());
759 /* If the constant is a record, the types of each of the entries in
760 * value_list must be a 1-for-1 match with the structure components. Each
761 * entry must also be a constant. Just move the nodes from the value_list
762 * to the list in the ir_constant.
764 if (type
->is_array() || type
->is_struct()) {
765 this->const_elements
= ralloc_array(this, ir_constant
*, type
->length
);
767 foreach_in_list(ir_constant
, value
, value_list
) {
768 assert(value
->as_constant() != NULL
);
770 this->const_elements
[i
++] = value
;
775 for (unsigned i
= 0; i
< 16; i
++) {
776 this->value
.u
[i
] = 0;
779 ir_constant
*value
= (ir_constant
*) (value_list
->get_head_raw());
781 /* Constructors with exactly one scalar argument are special for vectors
782 * and matrices. For vectors, the scalar value is replicated to fill all
783 * the components. For matrices, the scalar fills the components of the
784 * diagonal while the rest is filled with 0.
786 if (value
->type
->is_scalar() && value
->next
->is_tail_sentinel()) {
787 if (type
->is_matrix()) {
788 /* Matrix - fill diagonal (rest is already set to 0) */
789 assert(type
->is_float() || type
->is_double());
790 for (unsigned i
= 0; i
< type
->matrix_columns
; i
++) {
791 if (type
->is_float())
792 this->value
.f
[i
* type
->vector_elements
+ i
] =
795 this->value
.d
[i
* type
->vector_elements
+ i
] =
799 /* Vector or scalar - fill all components */
800 switch (type
->base_type
) {
803 for (unsigned i
= 0; i
< type
->components(); i
++)
804 this->value
.u
[i
] = value
->value
.u
[0];
806 case GLSL_TYPE_FLOAT
:
807 for (unsigned i
= 0; i
< type
->components(); i
++)
808 this->value
.f
[i
] = value
->value
.f
[0];
810 case GLSL_TYPE_DOUBLE
:
811 for (unsigned i
= 0; i
< type
->components(); i
++)
812 this->value
.d
[i
] = value
->value
.d
[0];
814 case GLSL_TYPE_UINT64
:
815 case GLSL_TYPE_INT64
:
816 for (unsigned i
= 0; i
< type
->components(); i
++)
817 this->value
.u64
[i
] = value
->value
.u64
[0];
820 for (unsigned i
= 0; i
< type
->components(); i
++)
821 this->value
.b
[i
] = value
->value
.b
[0];
823 case GLSL_TYPE_SAMPLER
:
824 case GLSL_TYPE_IMAGE
:
825 this->value
.u64
[0] = value
->value
.u64
[0];
828 assert(!"Should not get here.");
835 if (type
->is_matrix() && value
->type
->is_matrix()) {
836 assert(value
->next
->is_tail_sentinel());
838 /* From section 5.4.2 of the GLSL 1.20 spec:
839 * "If a matrix is constructed from a matrix, then each component
840 * (column i, row j) in the result that has a corresponding component
841 * (column i, row j) in the argument will be initialized from there."
843 unsigned cols
= MIN2(type
->matrix_columns
, value
->type
->matrix_columns
);
844 unsigned rows
= MIN2(type
->vector_elements
, value
->type
->vector_elements
);
845 for (unsigned i
= 0; i
< cols
; i
++) {
846 for (unsigned j
= 0; j
< rows
; j
++) {
847 const unsigned src
= i
* value
->type
->vector_elements
+ j
;
848 const unsigned dst
= i
* type
->vector_elements
+ j
;
849 this->value
.f
[dst
] = value
->value
.f
[src
];
853 /* "All other components will be initialized to the identity matrix." */
854 for (unsigned i
= cols
; i
< type
->matrix_columns
; i
++)
855 this->value
.f
[i
* type
->vector_elements
+ i
] = 1.0;
860 /* Use each component from each entry in the value_list to initialize one
861 * component of the constant being constructed.
865 assert(value
->as_constant() != NULL
);
866 assert(!value
->is_tail_sentinel());
868 for (unsigned j
= 0; j
< value
->type
->components(); j
++) {
869 switch (type
->base_type
) {
871 this->value
.u
[i
] = value
->get_uint_component(j
);
874 this->value
.i
[i
] = value
->get_int_component(j
);
876 case GLSL_TYPE_FLOAT
:
877 this->value
.f
[i
] = value
->get_float_component(j
);
880 this->value
.b
[i
] = value
->get_bool_component(j
);
882 case GLSL_TYPE_DOUBLE
:
883 this->value
.d
[i
] = value
->get_double_component(j
);
885 case GLSL_TYPE_UINT64
:
886 this->value
.u64
[i
] = value
->get_uint64_component(j
);
888 case GLSL_TYPE_INT64
:
889 this->value
.i64
[i
] = value
->get_int64_component(j
);
892 /* FINISHME: What to do? Exceptions are not the answer.
898 if (i
>= type
->components())
902 if (i
>= type
->components())
903 break; /* avoid downcasting a list sentinel */
904 value
= (ir_constant
*) value
->next
;
909 ir_constant::zero(void *mem_ctx
, const glsl_type
*type
)
911 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
912 || type
->is_struct() || type
->is_array());
914 ir_constant
*c
= new(mem_ctx
) ir_constant
;
916 memset(&c
->value
, 0, sizeof(c
->value
));
918 if (type
->is_array()) {
919 c
->const_elements
= ralloc_array(c
, ir_constant
*, type
->length
);
921 for (unsigned i
= 0; i
< type
->length
; i
++)
922 c
->const_elements
[i
] = ir_constant::zero(c
, type
->fields
.array
);
925 if (type
->is_struct()) {
926 c
->const_elements
= ralloc_array(c
, ir_constant
*, type
->length
);
928 for (unsigned i
= 0; i
< type
->length
; i
++) {
929 c
->const_elements
[i
] =
930 ir_constant::zero(mem_ctx
, type
->fields
.structure
[i
].type
);
938 ir_constant::get_bool_component(unsigned i
) const
940 switch (this->type
->base_type
) {
941 case GLSL_TYPE_UINT
: return this->value
.u
[i
] != 0;
942 case GLSL_TYPE_INT
: return this->value
.i
[i
] != 0;
943 case GLSL_TYPE_FLOAT
: return ((int)this->value
.f
[i
]) != 0;
944 case GLSL_TYPE_BOOL
: return this->value
.b
[i
];
945 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
] != 0.0;
946 case GLSL_TYPE_SAMPLER
:
947 case GLSL_TYPE_IMAGE
:
948 case GLSL_TYPE_UINT64
: return this->value
.u64
[i
] != 0;
949 case GLSL_TYPE_INT64
: return this->value
.i64
[i
] != 0;
950 default: assert(!"Should not get here."); break;
953 /* Must return something to make the compiler happy. This is clearly an
960 ir_constant::get_float_component(unsigned i
) const
962 switch (this->type
->base_type
) {
963 case GLSL_TYPE_UINT
: return (float) this->value
.u
[i
];
964 case GLSL_TYPE_INT
: return (float) this->value
.i
[i
];
965 case GLSL_TYPE_FLOAT
: return this->value
.f
[i
];
966 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0f
: 0.0f
;
967 case GLSL_TYPE_DOUBLE
: return (float) this->value
.d
[i
];
968 case GLSL_TYPE_SAMPLER
:
969 case GLSL_TYPE_IMAGE
:
970 case GLSL_TYPE_UINT64
: return (float) this->value
.u64
[i
];
971 case GLSL_TYPE_INT64
: return (float) this->value
.i64
[i
];
972 default: assert(!"Should not get here."); break;
975 /* Must return something to make the compiler happy. This is clearly an
982 ir_constant::get_double_component(unsigned i
) const
984 switch (this->type
->base_type
) {
985 case GLSL_TYPE_UINT
: return (double) this->value
.u
[i
];
986 case GLSL_TYPE_INT
: return (double) this->value
.i
[i
];
987 case GLSL_TYPE_FLOAT
: return (double) this->value
.f
[i
];
988 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0 : 0.0;
989 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
];
990 case GLSL_TYPE_SAMPLER
:
991 case GLSL_TYPE_IMAGE
:
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_SAMPLER
:
1013 case GLSL_TYPE_IMAGE
:
1014 case GLSL_TYPE_UINT64
: return (int) this->value
.u64
[i
];
1015 case GLSL_TYPE_INT64
: return (int) this->value
.i64
[i
];
1016 default: assert(!"Should not get here."); break;
1019 /* Must return something to make the compiler happy. This is clearly an
1026 ir_constant::get_uint_component(unsigned i
) const
1028 switch (this->type
->base_type
) {
1029 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1030 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1031 case GLSL_TYPE_FLOAT
: return (unsigned) this->value
.f
[i
];
1032 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1033 case GLSL_TYPE_DOUBLE
: return (unsigned) this->value
.d
[i
];
1034 case GLSL_TYPE_SAMPLER
:
1035 case GLSL_TYPE_IMAGE
:
1036 case GLSL_TYPE_UINT64
: return (unsigned) this->value
.u64
[i
];
1037 case GLSL_TYPE_INT64
: return (unsigned) this->value
.i64
[i
];
1038 default: assert(!"Should not get here."); break;
1041 /* Must return something to make the compiler happy. This is clearly an
1048 ir_constant::get_int64_component(unsigned i
) const
1050 switch (this->type
->base_type
) {
1051 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1052 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1053 case GLSL_TYPE_FLOAT
: return (int64_t) this->value
.f
[i
];
1054 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1055 case GLSL_TYPE_DOUBLE
: return (int64_t) this->value
.d
[i
];
1056 case GLSL_TYPE_SAMPLER
:
1057 case GLSL_TYPE_IMAGE
:
1058 case GLSL_TYPE_UINT64
: return (int64_t) this->value
.u64
[i
];
1059 case GLSL_TYPE_INT64
: return this->value
.i64
[i
];
1060 default: assert(!"Should not get here."); break;
1063 /* Must return something to make the compiler happy. This is clearly an
1070 ir_constant::get_uint64_component(unsigned i
) const
1072 switch (this->type
->base_type
) {
1073 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1074 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1075 case GLSL_TYPE_FLOAT
: return (uint64_t) this->value
.f
[i
];
1076 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1077 case GLSL_TYPE_DOUBLE
: return (uint64_t) this->value
.d
[i
];
1078 case GLSL_TYPE_SAMPLER
:
1079 case GLSL_TYPE_IMAGE
:
1080 case GLSL_TYPE_UINT64
: return this->value
.u64
[i
];
1081 case GLSL_TYPE_INT64
: return (uint64_t) this->value
.i64
[i
];
1082 default: assert(!"Should not get here."); break;
1085 /* Must return something to make the compiler happy. This is clearly an
1092 ir_constant::get_array_element(unsigned i
) const
1094 assert(this->type
->is_array());
1096 /* From page 35 (page 41 of the PDF) of the GLSL 1.20 spec:
1098 * "Behavior is undefined if a shader subscripts an array with an index
1099 * less than 0 or greater than or equal to the size the array was
1102 * Most out-of-bounds accesses are removed before things could get this far.
1103 * There are cases where non-constant array index values can get constant
1108 else if (i
>= this->type
->length
)
1109 i
= this->type
->length
- 1;
1111 return const_elements
[i
];
1115 ir_constant::get_record_field(int idx
)
1117 assert(this->type
->is_struct());
1118 assert(idx
>= 0 && (unsigned) idx
< this->type
->length
);
1120 return const_elements
[idx
];
1124 ir_constant::copy_offset(ir_constant
*src
, int offset
)
1126 switch (this->type
->base_type
) {
1127 case GLSL_TYPE_UINT
:
1129 case GLSL_TYPE_FLOAT
:
1130 case GLSL_TYPE_DOUBLE
:
1131 case GLSL_TYPE_SAMPLER
:
1132 case GLSL_TYPE_IMAGE
:
1133 case GLSL_TYPE_UINT64
:
1134 case GLSL_TYPE_INT64
:
1135 case GLSL_TYPE_BOOL
: {
1136 unsigned int size
= src
->type
->components();
1137 assert (size
<= this->type
->components() - offset
);
1138 for (unsigned int i
=0; i
<size
; i
++) {
1139 switch (this->type
->base_type
) {
1140 case GLSL_TYPE_UINT
:
1141 value
.u
[i
+offset
] = src
->get_uint_component(i
);
1144 value
.i
[i
+offset
] = src
->get_int_component(i
);
1146 case GLSL_TYPE_FLOAT
:
1147 value
.f
[i
+offset
] = src
->get_float_component(i
);
1149 case GLSL_TYPE_BOOL
:
1150 value
.b
[i
+offset
] = src
->get_bool_component(i
);
1152 case GLSL_TYPE_DOUBLE
:
1153 value
.d
[i
+offset
] = src
->get_double_component(i
);
1155 case GLSL_TYPE_SAMPLER
:
1156 case GLSL_TYPE_IMAGE
:
1157 case GLSL_TYPE_UINT64
:
1158 value
.u64
[i
+offset
] = src
->get_uint64_component(i
);
1160 case GLSL_TYPE_INT64
:
1161 value
.i64
[i
+offset
] = src
->get_int64_component(i
);
1163 default: // Shut up the compiler
1170 case GLSL_TYPE_STRUCT
:
1171 case GLSL_TYPE_ARRAY
: {
1172 assert (src
->type
== this->type
);
1173 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1174 this->const_elements
[i
] = src
->const_elements
[i
]->clone(this, NULL
);
1180 assert(!"Should not get here.");
1186 ir_constant::copy_masked_offset(ir_constant
*src
, int offset
, unsigned int mask
)
1188 assert (!type
->is_array() && !type
->is_struct());
1190 if (!type
->is_vector() && !type
->is_matrix()) {
1196 for (int i
=0; i
<4; i
++) {
1197 if (mask
& (1 << i
)) {
1198 switch (this->type
->base_type
) {
1199 case GLSL_TYPE_UINT
:
1200 value
.u
[i
+offset
] = src
->get_uint_component(id
++);
1203 value
.i
[i
+offset
] = src
->get_int_component(id
++);
1205 case GLSL_TYPE_FLOAT
:
1206 value
.f
[i
+offset
] = src
->get_float_component(id
++);
1208 case GLSL_TYPE_BOOL
:
1209 value
.b
[i
+offset
] = src
->get_bool_component(id
++);
1211 case GLSL_TYPE_DOUBLE
:
1212 value
.d
[i
+offset
] = src
->get_double_component(id
++);
1214 case GLSL_TYPE_SAMPLER
:
1215 case GLSL_TYPE_IMAGE
:
1216 case GLSL_TYPE_UINT64
:
1217 value
.u64
[i
+offset
] = src
->get_uint64_component(id
++);
1219 case GLSL_TYPE_INT64
:
1220 value
.i64
[i
+offset
] = src
->get_int64_component(id
++);
1223 assert(!"Should not get here.");
1231 ir_constant::has_value(const ir_constant
*c
) const
1233 if (this->type
!= c
->type
)
1236 if (this->type
->is_array() || this->type
->is_struct()) {
1237 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1238 if (!this->const_elements
[i
]->has_value(c
->const_elements
[i
]))
1244 for (unsigned i
= 0; i
< this->type
->components(); i
++) {
1245 switch (this->type
->base_type
) {
1246 case GLSL_TYPE_UINT
:
1247 if (this->value
.u
[i
] != c
->value
.u
[i
])
1251 if (this->value
.i
[i
] != c
->value
.i
[i
])
1254 case GLSL_TYPE_FLOAT
:
1255 if (this->value
.f
[i
] != c
->value
.f
[i
])
1258 case GLSL_TYPE_BOOL
:
1259 if (this->value
.b
[i
] != c
->value
.b
[i
])
1262 case GLSL_TYPE_DOUBLE
:
1263 if (this->value
.d
[i
] != c
->value
.d
[i
])
1266 case GLSL_TYPE_SAMPLER
:
1267 case GLSL_TYPE_IMAGE
:
1268 case GLSL_TYPE_UINT64
:
1269 if (this->value
.u64
[i
] != c
->value
.u64
[i
])
1272 case GLSL_TYPE_INT64
:
1273 if (this->value
.i64
[i
] != c
->value
.i64
[i
])
1277 assert(!"Should not get here.");
1286 ir_constant::is_value(float f
, int i
) const
1288 if (!this->type
->is_scalar() && !this->type
->is_vector())
1291 /* Only accept boolean values for 0/1. */
1292 if (int(bool(i
)) != i
&& this->type
->is_boolean())
1295 for (unsigned c
= 0; c
< this->type
->vector_elements
; c
++) {
1296 switch (this->type
->base_type
) {
1297 case GLSL_TYPE_FLOAT
:
1298 if (this->value
.f
[c
] != f
)
1302 if (this->value
.i
[c
] != i
)
1305 case GLSL_TYPE_UINT
:
1306 if (this->value
.u
[c
] != unsigned(i
))
1309 case GLSL_TYPE_BOOL
:
1310 if (this->value
.b
[c
] != bool(i
))
1313 case GLSL_TYPE_DOUBLE
:
1314 if (this->value
.d
[c
] != double(f
))
1317 case GLSL_TYPE_SAMPLER
:
1318 case GLSL_TYPE_IMAGE
:
1319 case GLSL_TYPE_UINT64
:
1320 if (this->value
.u64
[c
] != uint64_t(i
))
1323 case GLSL_TYPE_INT64
:
1324 if (this->value
.i64
[c
] != i
)
1328 /* The only other base types are structures, arrays, and samplers.
1329 * Samplers cannot be constants, and the others should have been
1330 * filtered out above.
1332 assert(!"Should not get here.");
1341 ir_constant::is_zero() const
1343 return is_value(0.0, 0);
1347 ir_constant::is_one() const
1349 return is_value(1.0, 1);
1353 ir_constant::is_negative_one() const
1355 return is_value(-1.0, -1);
1359 ir_constant::is_uint16_constant() const
1361 if (!type
->is_integer())
1364 return value
.u
[0] < (1 << 16);
1368 : ir_instruction(ir_type_loop
)
1373 ir_dereference_variable::ir_dereference_variable(ir_variable
*var
)
1374 : ir_dereference(ir_type_dereference_variable
)
1376 assert(var
!= NULL
);
1379 this->type
= var
->type
;
1383 ir_dereference_array::ir_dereference_array(ir_rvalue
*value
,
1384 ir_rvalue
*array_index
)
1385 : ir_dereference(ir_type_dereference_array
)
1387 this->array_index
= array_index
;
1388 this->set_array(value
);
1392 ir_dereference_array::ir_dereference_array(ir_variable
*var
,
1393 ir_rvalue
*array_index
)
1394 : ir_dereference(ir_type_dereference_array
)
1396 void *ctx
= ralloc_parent(var
);
1398 this->array_index
= array_index
;
1399 this->set_array(new(ctx
) ir_dereference_variable(var
));
1404 ir_dereference_array::set_array(ir_rvalue
*value
)
1406 assert(value
!= NULL
);
1408 this->array
= value
;
1410 const glsl_type
*const vt
= this->array
->type
;
1412 if (vt
->is_array()) {
1413 type
= vt
->fields
.array
;
1414 } else if (vt
->is_matrix()) {
1415 type
= vt
->column_type();
1416 } else if (vt
->is_vector()) {
1417 type
= vt
->get_base_type();
1422 ir_dereference_record::ir_dereference_record(ir_rvalue
*value
,
1424 : ir_dereference(ir_type_dereference_record
)
1426 assert(value
!= NULL
);
1428 this->record
= value
;
1429 this->type
= this->record
->type
->field_type(field
);
1430 this->field_idx
= this->record
->type
->field_index(field
);
1434 ir_dereference_record::ir_dereference_record(ir_variable
*var
,
1436 : ir_dereference(ir_type_dereference_record
)
1438 void *ctx
= ralloc_parent(var
);
1440 this->record
= new(ctx
) ir_dereference_variable(var
);
1441 this->type
= this->record
->type
->field_type(field
);
1442 this->field_idx
= this->record
->type
->field_index(field
);
1446 ir_dereference::is_lvalue(const struct _mesa_glsl_parse_state
*state
) const
1448 ir_variable
*var
= this->variable_referenced();
1450 /* Every l-value derference chain eventually ends in a variable.
1452 if ((var
== NULL
) || var
->data
.read_only
)
1455 /* From section 4.1.7 of the ARB_bindless_texture spec:
1457 * "Samplers can be used as l-values, so can be assigned into and used as
1458 * "out" and "inout" function parameters."
1460 * From section 4.1.X of the ARB_bindless_texture spec:
1462 * "Images can be used as l-values, so can be assigned into and used as
1463 * "out" and "inout" function parameters."
1465 if ((!state
|| state
->has_bindless()) &&
1466 (this->type
->contains_sampler() || this->type
->contains_image()))
1469 /* From section 4.1.7 of the GLSL 4.40 spec:
1471 * "Opaque variables cannot be treated as l-values; hence cannot
1472 * be used as out or inout function parameters, nor can they be
1475 if (this->type
->contains_opaque())
1482 static const char * const tex_opcode_strs
[] = { "tex", "txb", "txl", "txd", "txf", "txf_ms", "txs", "lod", "tg4", "query_levels", "texture_samples", "samples_identical" };
1484 const char *ir_texture::opcode_string()
1486 assert((unsigned int) op
< ARRAY_SIZE(tex_opcode_strs
));
1487 return tex_opcode_strs
[op
];
1491 ir_texture::get_opcode(const char *str
)
1493 const int count
= sizeof(tex_opcode_strs
) / sizeof(tex_opcode_strs
[0]);
1494 for (int op
= 0; op
< count
; op
++) {
1495 if (strcmp(str
, tex_opcode_strs
[op
]) == 0)
1496 return (ir_texture_opcode
) op
;
1498 return (ir_texture_opcode
) -1;
1503 ir_texture::set_sampler(ir_dereference
*sampler
, const glsl_type
*type
)
1505 assert(sampler
!= NULL
);
1506 assert(type
!= NULL
);
1507 this->sampler
= sampler
;
1510 if (this->op
== ir_txs
|| this->op
== ir_query_levels
||
1511 this->op
== ir_texture_samples
) {
1512 assert(type
->base_type
== GLSL_TYPE_INT
);
1513 } else if (this->op
== ir_lod
) {
1514 assert(type
->vector_elements
== 2);
1515 assert(type
->is_float());
1516 } else if (this->op
== ir_samples_identical
) {
1517 assert(type
== glsl_type::bool_type
);
1518 assert(sampler
->type
->is_sampler());
1519 assert(sampler
->type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
);
1521 assert(sampler
->type
->sampled_type
== (int) type
->base_type
);
1522 if (sampler
->type
->sampler_shadow
)
1523 assert(type
->vector_elements
== 4 || type
->vector_elements
== 1);
1525 assert(type
->vector_elements
== 4);
1531 ir_swizzle::init_mask(const unsigned *comp
, unsigned count
)
1533 assert((count
>= 1) && (count
<= 4));
1535 memset(&this->mask
, 0, sizeof(this->mask
));
1536 this->mask
.num_components
= count
;
1538 unsigned dup_mask
= 0;
1541 assert(comp
[3] <= 3);
1542 dup_mask
|= (1U << comp
[3])
1543 & ((1U << comp
[0]) | (1U << comp
[1]) | (1U << comp
[2]));
1544 this->mask
.w
= comp
[3];
1547 assert(comp
[2] <= 3);
1548 dup_mask
|= (1U << comp
[2])
1549 & ((1U << comp
[0]) | (1U << comp
[1]));
1550 this->mask
.z
= comp
[2];
1553 assert(comp
[1] <= 3);
1554 dup_mask
|= (1U << comp
[1])
1555 & ((1U << comp
[0]));
1556 this->mask
.y
= comp
[1];
1559 assert(comp
[0] <= 3);
1560 this->mask
.x
= comp
[0];
1563 this->mask
.has_duplicates
= dup_mask
!= 0;
1565 /* Based on the number of elements in the swizzle and the base type
1566 * (i.e., float, int, unsigned, or bool) of the vector being swizzled,
1567 * generate the type of the resulting value.
1569 type
= glsl_type::get_instance(val
->type
->base_type
, mask
.num_components
, 1);
1572 ir_swizzle::ir_swizzle(ir_rvalue
*val
, unsigned x
, unsigned y
, unsigned z
,
1573 unsigned w
, unsigned count
)
1574 : ir_rvalue(ir_type_swizzle
), val(val
)
1576 const unsigned components
[4] = { x
, y
, z
, w
};
1577 this->init_mask(components
, count
);
1580 ir_swizzle::ir_swizzle(ir_rvalue
*val
, const unsigned *comp
,
1582 : ir_rvalue(ir_type_swizzle
), val(val
)
1584 this->init_mask(comp
, count
);
1587 ir_swizzle::ir_swizzle(ir_rvalue
*val
, ir_swizzle_mask mask
)
1588 : ir_rvalue(ir_type_swizzle
), val(val
), mask(mask
)
1590 this->type
= glsl_type::get_instance(val
->type
->base_type
,
1591 mask
.num_components
, 1);
1600 ir_swizzle::create(ir_rvalue
*val
, const char *str
, unsigned vector_length
)
1602 void *ctx
= ralloc_parent(val
);
1604 /* For each possible swizzle character, this table encodes the value in
1605 * \c idx_map that represents the 0th element of the vector. For invalid
1606 * swizzle characters (e.g., 'k'), a special value is used that will allow
1607 * detection of errors.
1609 static const unsigned char base_idx
[26] = {
1610 /* a b c d e f g h i j k l m */
1611 R
, R
, I
, I
, I
, I
, R
, I
, I
, I
, I
, I
, I
,
1612 /* n o p q r s t u v w x y z */
1613 I
, I
, S
, S
, R
, S
, S
, I
, I
, X
, X
, X
, X
1616 /* Each valid swizzle character has an entry in the previous table. This
1617 * table encodes the base index encoded in the previous table plus the actual
1618 * index of the swizzle character. When processing swizzles, the first
1619 * character in the string is indexed in the previous table. Each character
1620 * in the string is indexed in this table, and the value found there has the
1621 * value form the first table subtracted. The result must be on the range
1624 * For example, the string "wzyx" will get X from the first table. Each of
1625 * the charcaters will get X+3, X+2, X+1, and X+0 from this table. After
1626 * subtraction, the swizzle values are { 3, 2, 1, 0 }.
1628 * The string "wzrg" will get X from the first table. Each of the characters
1629 * will get X+3, X+2, R+0, and R+1 from this table. After subtraction, the
1630 * swizzle values are { 3, 2, 4, 5 }. Since 4 and 5 are outside the range
1631 * [0,3], the error is detected.
1633 static const unsigned char idx_map
[26] = {
1634 /* a b c d e f g h i j k l m */
1635 R
+3, R
+2, 0, 0, 0, 0, R
+1, 0, 0, 0, 0, 0, 0,
1636 /* n o p q r s t u v w x y z */
1637 0, 0, S
+2, S
+3, R
+0, S
+0, S
+1, 0, 0, X
+3, X
+0, X
+1, X
+2
1640 int swiz_idx
[4] = { 0, 0, 0, 0 };
1644 /* Validate the first character in the swizzle string and look up the base
1645 * index value as described above.
1647 if ((str
[0] < 'a') || (str
[0] > 'z'))
1650 const unsigned base
= base_idx
[str
[0] - 'a'];
1653 for (i
= 0; (i
< 4) && (str
[i
] != '\0'); i
++) {
1654 /* Validate the next character, and, as described above, convert it to a
1657 if ((str
[i
] < 'a') || (str
[i
] > 'z'))
1660 swiz_idx
[i
] = idx_map
[str
[i
] - 'a'] - base
;
1661 if ((swiz_idx
[i
] < 0) || (swiz_idx
[i
] >= (int) vector_length
))
1668 return new(ctx
) ir_swizzle(val
, swiz_idx
[0], swiz_idx
[1], swiz_idx
[2],
1678 ir_swizzle::variable_referenced() const
1680 return this->val
->variable_referenced();
1684 bool ir_variable::temporaries_allocate_names
= false;
1686 const char ir_variable::tmp_name
[] = "compiler_temp";
1688 ir_variable::ir_variable(const struct glsl_type
*type
, const char *name
,
1689 ir_variable_mode mode
)
1690 : ir_instruction(ir_type_variable
)
1694 if (mode
== ir_var_temporary
&& !ir_variable::temporaries_allocate_names
)
1697 /* The ir_variable clone method may call this constructor with name set to
1701 || mode
== ir_var_temporary
1702 || mode
== ir_var_function_in
1703 || mode
== ir_var_function_out
1704 || mode
== ir_var_function_inout
);
1705 assert(name
!= ir_variable::tmp_name
1706 || mode
== ir_var_temporary
);
1707 if (mode
== ir_var_temporary
1708 && (name
== NULL
|| name
== ir_variable::tmp_name
)) {
1709 this->name
= ir_variable::tmp_name
;
1710 } else if (name
== NULL
||
1711 strlen(name
) < ARRAY_SIZE(this->name_storage
)) {
1712 strcpy(this->name_storage
, name
? name
: "");
1713 this->name
= this->name_storage
;
1715 this->name
= ralloc_strdup(this, name
);
1718 this->u
.max_ifc_array_access
= NULL
;
1720 this->data
.explicit_location
= false;
1721 this->data
.has_initializer
= false;
1722 this->data
.location
= -1;
1723 this->data
.location_frac
= 0;
1724 this->data
.binding
= 0;
1725 this->data
.warn_extension_index
= 0;
1726 this->constant_value
= NULL
;
1727 this->constant_initializer
= NULL
;
1728 this->data
.depth_layout
= ir_depth_layout_none
;
1729 this->data
.used
= false;
1730 this->data
.always_active_io
= false;
1731 this->data
.read_only
= false;
1732 this->data
.centroid
= false;
1733 this->data
.sample
= false;
1734 this->data
.patch
= false;
1735 this->data
.explicit_invariant
= false;
1736 this->data
.invariant
= false;
1737 this->data
.how_declared
= ir_var_declared_normally
;
1738 this->data
.mode
= mode
;
1739 this->data
.interpolation
= INTERP_MODE_NONE
;
1740 this->data
.max_array_access
= -1;
1741 this->data
.offset
= 0;
1742 this->data
.precision
= GLSL_PRECISION_NONE
;
1743 this->data
.memory_read_only
= false;
1744 this->data
.memory_write_only
= false;
1745 this->data
.memory_coherent
= false;
1746 this->data
.memory_volatile
= false;
1747 this->data
.memory_restrict
= false;
1748 this->data
.from_ssbo_unsized_array
= false;
1749 this->data
.fb_fetch_output
= false;
1750 this->data
.bindless
= false;
1751 this->data
.bound
= false;
1754 if (type
->is_interface())
1755 this->init_interface_type(type
);
1756 else if (type
->without_array()->is_interface())
1757 this->init_interface_type(type
->without_array());
1763 interpolation_string(unsigned interpolation
)
1765 switch (interpolation
) {
1766 case INTERP_MODE_NONE
: return "no";
1767 case INTERP_MODE_SMOOTH
: return "smooth";
1768 case INTERP_MODE_FLAT
: return "flat";
1769 case INTERP_MODE_NOPERSPECTIVE
: return "noperspective";
1772 assert(!"Should not get here.");
1776 const char *const ir_variable::warn_extension_table
[] = {
1778 "GL_ARB_shader_stencil_export",
1779 "GL_AMD_shader_stencil_export",
1783 ir_variable::enable_extension_warning(const char *extension
)
1785 for (unsigned i
= 0; i
< ARRAY_SIZE(warn_extension_table
); i
++) {
1786 if (strcmp(warn_extension_table
[i
], extension
) == 0) {
1787 this->data
.warn_extension_index
= i
;
1792 assert(!"Should not get here.");
1793 this->data
.warn_extension_index
= 0;
1797 ir_variable::get_extension_warning() const
1799 return this->data
.warn_extension_index
== 0
1800 ? NULL
: warn_extension_table
[this->data
.warn_extension_index
];
1803 ir_function_signature::ir_function_signature(const glsl_type
*return_type
,
1804 builtin_available_predicate b
)
1805 : ir_instruction(ir_type_function_signature
),
1806 return_type(return_type
), is_defined(false),
1807 intrinsic_id(ir_intrinsic_invalid
), builtin_avail(b
), _function(NULL
)
1809 this->origin
= NULL
;
1814 ir_function_signature::is_builtin() const
1816 return builtin_avail
!= NULL
;
1821 ir_function_signature::is_builtin_available(const _mesa_glsl_parse_state
*state
) const
1823 /* We can't call the predicate without a state pointer, so just say that
1824 * the signature is available. At compile time, we need the filtering,
1825 * but also receive a valid state pointer. At link time, we're resolving
1826 * imported built-in prototypes to their definitions, which will always
1827 * be an exact match. So we can skip the filtering.
1832 assert(builtin_avail
!= NULL
);
1833 return builtin_avail(state
);
1838 modes_match(unsigned a
, unsigned b
)
1843 /* Accept "in" vs. "const in" */
1844 if ((a
== ir_var_const_in
&& b
== ir_var_function_in
) ||
1845 (b
== ir_var_const_in
&& a
== ir_var_function_in
))
1853 ir_function_signature::qualifiers_match(exec_list
*params
)
1855 /* check that the qualifiers match. */
1856 foreach_two_lists(a_node
, &this->parameters
, b_node
, params
) {
1857 ir_variable
*a
= (ir_variable
*) a_node
;
1858 ir_variable
*b
= (ir_variable
*) b_node
;
1860 if (a
->data
.read_only
!= b
->data
.read_only
||
1861 !modes_match(a
->data
.mode
, b
->data
.mode
) ||
1862 a
->data
.interpolation
!= b
->data
.interpolation
||
1863 a
->data
.centroid
!= b
->data
.centroid
||
1864 a
->data
.sample
!= b
->data
.sample
||
1865 a
->data
.patch
!= b
->data
.patch
||
1866 a
->data
.memory_read_only
!= b
->data
.memory_read_only
||
1867 a
->data
.memory_write_only
!= b
->data
.memory_write_only
||
1868 a
->data
.memory_coherent
!= b
->data
.memory_coherent
||
1869 a
->data
.memory_volatile
!= b
->data
.memory_volatile
||
1870 a
->data
.memory_restrict
!= b
->data
.memory_restrict
) {
1872 /* parameter a's qualifiers don't match */
1881 ir_function_signature::replace_parameters(exec_list
*new_params
)
1883 /* Destroy all of the previous parameter information. If the previous
1884 * parameter information comes from the function prototype, it may either
1885 * specify incorrect parameter names or not have names at all.
1887 new_params
->move_nodes_to(¶meters
);
1891 ir_function::ir_function(const char *name
)
1892 : ir_instruction(ir_type_function
)
1894 this->subroutine_index
= -1;
1895 this->name
= ralloc_strdup(this, name
);
1900 ir_function::has_user_signature()
1902 foreach_in_list(ir_function_signature
, sig
, &this->signatures
) {
1903 if (!sig
->is_builtin())
1911 ir_rvalue::error_value(void *mem_ctx
)
1913 ir_rvalue
*v
= new(mem_ctx
) ir_rvalue(ir_type_unset
);
1915 v
->type
= glsl_type::error_type
;
1921 visit_exec_list(exec_list
*list
, ir_visitor
*visitor
)
1923 foreach_in_list_safe(ir_instruction
, node
, list
) {
1924 node
->accept(visitor
);
1930 steal_memory(ir_instruction
*ir
, void *new_ctx
)
1932 ir_variable
*var
= ir
->as_variable();
1933 ir_function
*fn
= ir
->as_function();
1934 ir_constant
*constant
= ir
->as_constant();
1935 if (var
!= NULL
&& var
->constant_value
!= NULL
)
1936 steal_memory(var
->constant_value
, ir
);
1938 if (var
!= NULL
&& var
->constant_initializer
!= NULL
)
1939 steal_memory(var
->constant_initializer
, ir
);
1941 if (fn
!= NULL
&& fn
->subroutine_types
)
1942 ralloc_steal(new_ctx
, fn
->subroutine_types
);
1944 /* The components of aggregate constants are not visited by the normal
1945 * visitor, so steal their values by hand.
1947 if (constant
!= NULL
&&
1948 (constant
->type
->is_array() || constant
->type
->is_struct())) {
1949 for (unsigned int i
= 0; i
< constant
->type
->length
; i
++) {
1950 steal_memory(constant
->const_elements
[i
], ir
);
1954 ralloc_steal(new_ctx
, ir
);
1959 reparent_ir(exec_list
*list
, void *mem_ctx
)
1961 foreach_in_list(ir_instruction
, node
, list
) {
1962 visit_tree(node
, steal_memory
, mem_ctx
);
1968 try_min_one(ir_rvalue
*ir
)
1970 ir_expression
*expr
= ir
->as_expression();
1972 if (!expr
|| expr
->operation
!= ir_binop_min
)
1975 if (expr
->operands
[0]->is_one())
1976 return expr
->operands
[1];
1978 if (expr
->operands
[1]->is_one())
1979 return expr
->operands
[0];
1985 try_max_zero(ir_rvalue
*ir
)
1987 ir_expression
*expr
= ir
->as_expression();
1989 if (!expr
|| expr
->operation
!= ir_binop_max
)
1992 if (expr
->operands
[0]->is_zero())
1993 return expr
->operands
[1];
1995 if (expr
->operands
[1]->is_zero())
1996 return expr
->operands
[0];
2002 ir_rvalue::as_rvalue_to_saturate()
2004 ir_expression
*expr
= this->as_expression();
2009 ir_rvalue
*max_zero
= try_max_zero(expr
);
2011 return try_min_one(max_zero
);
2013 ir_rvalue
*min_one
= try_min_one(expr
);
2015 return try_max_zero(min_one
);
2024 vertices_per_prim(GLenum prim
)
2033 case GL_LINES_ADJACENCY
:
2035 case GL_TRIANGLES_ADJACENCY
:
2038 assert(!"Bad primitive");
2044 * Generate a string describing the mode of a variable
2047 mode_string(const ir_variable
*var
)
2049 switch (var
->data
.mode
) {
2051 return (var
->data
.read_only
) ? "global constant" : "global variable";
2053 case ir_var_uniform
:
2056 case ir_var_shader_storage
:
2059 case ir_var_shader_in
:
2060 return "shader input";
2062 case ir_var_shader_out
:
2063 return "shader output";
2065 case ir_var_function_in
:
2066 case ir_var_const_in
:
2067 return "function input";
2069 case ir_var_function_out
:
2070 return "function output";
2072 case ir_var_function_inout
:
2073 return "function inout";
2075 case ir_var_system_value
:
2076 return "shader input";
2078 case ir_var_temporary
:
2079 return "compiler temporary";
2081 case ir_var_mode_count
:
2085 assert(!"Should not get here.");
2086 return "invalid variable";