2 * Copyright © 2010 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 #include "main/core.h" /* for MAX2 */
26 #include "compiler/glsl_types.h"
28 ir_rvalue::ir_rvalue(enum ir_node_type t
)
31 this->type
= glsl_type::error_type
;
34 bool ir_rvalue::is_zero() const
39 bool ir_rvalue::is_one() const
44 bool ir_rvalue::is_negative_one() const
50 * Modify the swizzle make to move one component to another
52 * \param m IR swizzle to be modified
53 * \param from Component in the RHS that is to be swizzled
54 * \param to Desired swizzle location of \c from
57 update_rhs_swizzle(ir_swizzle_mask
&m
, unsigned from
, unsigned to
)
60 case 0: m
.x
= from
; break;
61 case 1: m
.y
= from
; break;
62 case 2: m
.z
= from
; break;
63 case 3: m
.w
= from
; break;
64 default: assert(!"Should not get here.");
69 ir_assignment::set_lhs(ir_rvalue
*lhs
)
72 bool swizzled
= false;
75 ir_swizzle
*swiz
= lhs
->as_swizzle();
80 unsigned write_mask
= 0;
81 ir_swizzle_mask rhs_swiz
= { 0, 0, 0, 0, 0, 0 };
83 for (unsigned i
= 0; i
< swiz
->mask
.num_components
; i
++) {
87 case 0: c
= swiz
->mask
.x
; break;
88 case 1: c
= swiz
->mask
.y
; break;
89 case 2: c
= swiz
->mask
.z
; break;
90 case 3: c
= swiz
->mask
.w
; break;
91 default: assert(!"Should not get here.");
94 write_mask
|= (((this->write_mask
>> i
) & 1) << c
);
95 update_rhs_swizzle(rhs_swiz
, i
, c
);
96 rhs_swiz
.num_components
= swiz
->val
->type
->vector_elements
;
99 this->write_mask
= write_mask
;
102 this->rhs
= new(mem_ctx
) ir_swizzle(this->rhs
, rhs_swiz
);
107 /* Now, RHS channels line up with the LHS writemask. Collapse it
108 * to just the channels that will be written.
110 ir_swizzle_mask rhs_swiz
= { 0, 0, 0, 0, 0, 0 };
112 for (int i
= 0; i
< 4; i
++) {
113 if (write_mask
& (1 << i
))
114 update_rhs_swizzle(rhs_swiz
, i
, rhs_chan
++);
116 rhs_swiz
.num_components
= rhs_chan
;
117 this->rhs
= new(mem_ctx
) ir_swizzle(this->rhs
, rhs_swiz
);
120 assert((lhs
== NULL
) || lhs
->as_dereference());
122 this->lhs
= (ir_dereference
*) lhs
;
126 ir_assignment::whole_variable_written()
128 ir_variable
*v
= this->lhs
->whole_variable_referenced();
133 if (v
->type
->is_scalar())
136 if (v
->type
->is_vector()) {
137 const unsigned mask
= (1U << v
->type
->vector_elements
) - 1;
139 if (mask
!= this->write_mask
)
143 /* Either all the vector components are assigned or the variable is some
144 * composite type (and the whole thing is assigned.
149 ir_assignment::ir_assignment(ir_dereference
*lhs
, ir_rvalue
*rhs
,
150 ir_rvalue
*condition
, unsigned write_mask
)
151 : ir_instruction(ir_type_assignment
)
153 this->condition
= condition
;
156 this->write_mask
= write_mask
;
158 if (lhs
->type
->is_scalar() || lhs
->type
->is_vector()) {
159 int lhs_components
= 0;
160 for (int i
= 0; i
< 4; i
++) {
161 if (write_mask
& (1 << i
))
165 assert(lhs_components
== this->rhs
->type
->vector_elements
);
169 ir_assignment::ir_assignment(ir_rvalue
*lhs
, ir_rvalue
*rhs
,
170 ir_rvalue
*condition
)
171 : ir_instruction(ir_type_assignment
)
173 this->condition
= condition
;
176 /* If the RHS is a vector type, assume that all components of the vector
177 * type are being written to the LHS. The write mask comes from the RHS
178 * because we can have a case where the LHS is a vec4 and the RHS is a
179 * vec3. In that case, the assignment is:
181 * (assign (...) (xyz) (var_ref lhs) (var_ref rhs))
183 if (rhs
->type
->is_vector())
184 this->write_mask
= (1U << rhs
->type
->vector_elements
) - 1;
185 else if (rhs
->type
->is_scalar())
186 this->write_mask
= 1;
188 this->write_mask
= 0;
193 ir_expression::ir_expression(int op
, const struct glsl_type
*type
,
194 ir_rvalue
*op0
, ir_rvalue
*op1
,
195 ir_rvalue
*op2
, ir_rvalue
*op3
)
196 : ir_rvalue(ir_type_expression
)
199 this->operation
= ir_expression_operation(op
);
200 this->operands
[0] = op0
;
201 this->operands
[1] = op1
;
202 this->operands
[2] = op2
;
203 this->operands
[3] = op3
;
205 int num_operands
= get_num_operands(this->operation
);
206 for (int i
= num_operands
; i
< 4; i
++) {
207 assert(this->operands
[i
] == NULL
);
212 ir_expression::ir_expression(int op
, ir_rvalue
*op0
)
213 : ir_rvalue(ir_type_expression
)
215 this->operation
= ir_expression_operation(op
);
216 this->operands
[0] = op0
;
217 this->operands
[1] = NULL
;
218 this->operands
[2] = NULL
;
219 this->operands
[3] = NULL
;
221 assert(op
<= ir_last_unop
);
223 switch (this->operation
) {
224 case ir_unop_bit_not
:
225 case ir_unop_logic_not
:
240 case ir_unop_round_even
:
244 case ir_unop_dFdx_coarse
:
245 case ir_unop_dFdx_fine
:
247 case ir_unop_dFdy_coarse
:
248 case ir_unop_dFdy_fine
:
249 case ir_unop_bitfield_reverse
:
250 case ir_unop_interpolate_at_centroid
:
251 case ir_unop_saturate
:
252 this->type
= op0
->type
;
259 case ir_unop_bitcast_f2i
:
260 case ir_unop_bit_count
:
261 case ir_unop_find_msb
:
262 case ir_unop_find_lsb
:
263 case ir_unop_subroutine_to_int
:
264 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
,
265 op0
->type
->vector_elements
, 1);
272 case ir_unop_bitcast_i2f
:
273 case ir_unop_bitcast_u2f
:
274 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
,
275 op0
->type
->vector_elements
, 1);
281 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
,
282 op0
->type
->vector_elements
, 1);
288 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
,
289 op0
->type
->vector_elements
, 1);
295 case ir_unop_bitcast_f2u
:
296 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT
,
297 op0
->type
->vector_elements
, 1);
301 this->type
= glsl_type::float_type
;
304 case ir_unop_unpack_double_2x32
:
305 this->type
= glsl_type::uvec2_type
;
308 case ir_unop_pack_snorm_2x16
:
309 case ir_unop_pack_snorm_4x8
:
310 case ir_unop_pack_unorm_2x16
:
311 case ir_unop_pack_unorm_4x8
:
312 case ir_unop_pack_half_2x16
:
313 this->type
= glsl_type::uint_type
;
316 case ir_unop_pack_double_2x32
:
317 this->type
= glsl_type::double_type
;
320 case ir_unop_unpack_snorm_2x16
:
321 case ir_unop_unpack_unorm_2x16
:
322 case ir_unop_unpack_half_2x16
:
323 this->type
= glsl_type::vec2_type
;
326 case ir_unop_unpack_snorm_4x8
:
327 case ir_unop_unpack_unorm_4x8
:
328 this->type
= glsl_type::vec4_type
;
331 case ir_unop_frexp_sig
:
332 this->type
= op0
->type
;
334 case ir_unop_frexp_exp
:
335 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
,
336 op0
->type
->vector_elements
, 1);
339 case ir_unop_get_buffer_size
:
340 case ir_unop_ssbo_unsized_array_length
:
341 this->type
= glsl_type::int_type
;
344 case ir_unop_vote_any
:
345 case ir_unop_vote_all
:
346 case ir_unop_vote_eq
:
347 this->type
= glsl_type::bool_type
;
351 assert(!"not reached: missing automatic type setup for ir_expression");
352 this->type
= op0
->type
;
357 ir_expression::ir_expression(int op
, ir_rvalue
*op0
, ir_rvalue
*op1
)
358 : ir_rvalue(ir_type_expression
)
360 this->operation
= ir_expression_operation(op
);
361 this->operands
[0] = op0
;
362 this->operands
[1] = op1
;
363 this->operands
[2] = NULL
;
364 this->operands
[3] = NULL
;
366 assert(op
> ir_last_unop
);
368 switch (this->operation
) {
369 case ir_binop_all_equal
:
370 case ir_binop_any_nequal
:
371 this->type
= glsl_type::bool_type
;
382 if (op0
->type
->is_scalar()) {
383 this->type
= op1
->type
;
384 } else if (op1
->type
->is_scalar()) {
385 this->type
= op0
->type
;
387 if (this->operation
== ir_binop_mul
) {
388 this->type
= glsl_type::get_mul_type(op0
->type
, op1
->type
);
390 assert(op0
->type
== op1
->type
);
391 this->type
= op0
->type
;
396 case ir_binop_logic_and
:
397 case ir_binop_logic_xor
:
398 case ir_binop_logic_or
:
399 case ir_binop_bit_and
:
400 case ir_binop_bit_xor
:
401 case ir_binop_bit_or
:
402 assert(!op0
->type
->is_matrix());
403 assert(!op1
->type
->is_matrix());
404 if (op0
->type
->is_scalar()) {
405 this->type
= op1
->type
;
406 } else if (op1
->type
->is_scalar()) {
407 this->type
= op0
->type
;
409 assert(op0
->type
->vector_elements
== op1
->type
->vector_elements
);
410 this->type
= op0
->type
;
415 case ir_binop_nequal
:
416 case ir_binop_lequal
:
417 case ir_binop_gequal
:
419 case ir_binop_greater
:
420 assert(op0
->type
== op1
->type
);
421 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
,
422 op0
->type
->vector_elements
, 1);
426 this->type
= op0
->type
->get_base_type();
429 case ir_binop_imul_high
:
431 case ir_binop_borrow
:
432 case ir_binop_lshift
:
433 case ir_binop_rshift
:
435 case ir_binop_interpolate_at_offset
:
436 case ir_binop_interpolate_at_sample
:
437 this->type
= op0
->type
;
440 case ir_binop_vector_extract
:
441 this->type
= op0
->type
->get_scalar_type();
445 assert(!"not reached: missing automatic type setup for ir_expression");
446 this->type
= glsl_type::float_type
;
450 ir_expression::ir_expression(int op
, ir_rvalue
*op0
, ir_rvalue
*op1
,
452 : ir_rvalue(ir_type_expression
)
454 this->operation
= ir_expression_operation(op
);
455 this->operands
[0] = op0
;
456 this->operands
[1] = op1
;
457 this->operands
[2] = op2
;
458 this->operands
[3] = NULL
;
460 assert(op
> ir_last_binop
&& op
<= ir_last_triop
);
462 switch (this->operation
) {
465 case ir_triop_bitfield_extract
:
466 case ir_triop_vector_insert
:
467 this->type
= op0
->type
;
471 this->type
= op1
->type
;
475 assert(!"not reached: missing automatic type setup for ir_expression");
476 this->type
= glsl_type::float_type
;
481 ir_expression::get_num_operands(ir_expression_operation op
)
483 assert(op
<= ir_last_opcode
);
485 if (op
<= ir_last_unop
)
488 if (op
<= ir_last_binop
)
491 if (op
<= ir_last_triop
)
494 if (op
<= ir_last_quadop
)
501 #include "ir_expression_operation_strings.h"
504 depth_layout_string(ir_depth_layout layout
)
507 case ir_depth_layout_none
: return "";
508 case ir_depth_layout_any
: return "depth_any";
509 case ir_depth_layout_greater
: return "depth_greater";
510 case ir_depth_layout_less
: return "depth_less";
511 case ir_depth_layout_unchanged
: return "depth_unchanged";
519 ir_expression_operation
520 ir_expression::get_operator(const char *str
)
522 for (int op
= 0; op
<= int(ir_last_opcode
); op
++) {
523 if (strcmp(str
, ir_expression_operation_strings
[op
]) == 0)
524 return (ir_expression_operation
) op
;
526 return (ir_expression_operation
) -1;
530 ir_expression::variable_referenced() const
533 case ir_binop_vector_extract
:
534 case ir_triop_vector_insert
:
535 /* We get these for things like a[0] where a is a vector type. In these
536 * cases we want variable_referenced() to return the actual vector
537 * variable this is wrapping.
539 return operands
[0]->variable_referenced();
541 return ir_rvalue::variable_referenced();
545 ir_constant::ir_constant()
546 : ir_rvalue(ir_type_constant
)
548 this->array_elements
= NULL
;
551 ir_constant::ir_constant(const struct glsl_type
*type
,
552 const ir_constant_data
*data
)
553 : ir_rvalue(ir_type_constant
)
555 this->array_elements
= NULL
;
557 assert((type
->base_type
>= GLSL_TYPE_UINT
)
558 && (type
->base_type
<= GLSL_TYPE_BOOL
));
561 memcpy(& this->value
, data
, sizeof(this->value
));
564 ir_constant::ir_constant(float f
, unsigned vector_elements
)
565 : ir_rvalue(ir_type_constant
)
567 assert(vector_elements
<= 4);
568 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
, vector_elements
, 1);
569 for (unsigned i
= 0; i
< vector_elements
; i
++) {
570 this->value
.f
[i
] = f
;
572 for (unsigned i
= vector_elements
; i
< 16; i
++) {
573 this->value
.f
[i
] = 0;
577 ir_constant::ir_constant(double d
, unsigned vector_elements
)
578 : ir_rvalue(ir_type_constant
)
580 assert(vector_elements
<= 4);
581 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
, vector_elements
, 1);
582 for (unsigned i
= 0; i
< vector_elements
; i
++) {
583 this->value
.d
[i
] = d
;
585 for (unsigned i
= vector_elements
; i
< 16; i
++) {
586 this->value
.d
[i
] = 0.0;
590 ir_constant::ir_constant(unsigned int u
, unsigned vector_elements
)
591 : ir_rvalue(ir_type_constant
)
593 assert(vector_elements
<= 4);
594 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT
, vector_elements
, 1);
595 for (unsigned i
= 0; i
< vector_elements
; i
++) {
596 this->value
.u
[i
] = u
;
598 for (unsigned i
= vector_elements
; i
< 16; i
++) {
599 this->value
.u
[i
] = 0;
603 ir_constant::ir_constant(int integer
, unsigned vector_elements
)
604 : ir_rvalue(ir_type_constant
)
606 assert(vector_elements
<= 4);
607 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
, vector_elements
, 1);
608 for (unsigned i
= 0; i
< vector_elements
; i
++) {
609 this->value
.i
[i
] = integer
;
611 for (unsigned i
= vector_elements
; i
< 16; i
++) {
612 this->value
.i
[i
] = 0;
616 ir_constant::ir_constant(bool b
, unsigned vector_elements
)
617 : ir_rvalue(ir_type_constant
)
619 assert(vector_elements
<= 4);
620 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
, vector_elements
, 1);
621 for (unsigned i
= 0; i
< vector_elements
; i
++) {
622 this->value
.b
[i
] = b
;
624 for (unsigned i
= vector_elements
; i
< 16; i
++) {
625 this->value
.b
[i
] = false;
629 ir_constant::ir_constant(const ir_constant
*c
, unsigned i
)
630 : ir_rvalue(ir_type_constant
)
632 this->array_elements
= NULL
;
633 this->type
= c
->type
->get_base_type();
635 switch (this->type
->base_type
) {
636 case GLSL_TYPE_UINT
: this->value
.u
[0] = c
->value
.u
[i
]; break;
637 case GLSL_TYPE_INT
: this->value
.i
[0] = c
->value
.i
[i
]; break;
638 case GLSL_TYPE_FLOAT
: this->value
.f
[0] = c
->value
.f
[i
]; break;
639 case GLSL_TYPE_BOOL
: this->value
.b
[0] = c
->value
.b
[i
]; break;
640 case GLSL_TYPE_DOUBLE
: this->value
.d
[0] = c
->value
.d
[i
]; break;
641 default: assert(!"Should not get here."); break;
645 ir_constant::ir_constant(const struct glsl_type
*type
, exec_list
*value_list
)
646 : ir_rvalue(ir_type_constant
)
648 this->array_elements
= NULL
;
651 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
652 || type
->is_record() || type
->is_array());
654 if (type
->is_array()) {
655 this->array_elements
= ralloc_array(this, ir_constant
*, type
->length
);
657 foreach_in_list(ir_constant
, value
, value_list
) {
658 assert(value
->as_constant() != NULL
);
660 this->array_elements
[i
++] = value
;
665 /* If the constant is a record, the types of each of the entries in
666 * value_list must be a 1-for-1 match with the structure components. Each
667 * entry must also be a constant. Just move the nodes from the value_list
668 * to the list in the ir_constant.
670 /* FINISHME: Should there be some type checking and / or assertions here? */
671 /* FINISHME: Should the new constant take ownership of the nodes from
672 * FINISHME: value_list, or should it make copies?
674 if (type
->is_record()) {
675 value_list
->move_nodes_to(& this->components
);
679 for (unsigned i
= 0; i
< 16; i
++) {
680 this->value
.u
[i
] = 0;
683 ir_constant
*value
= (ir_constant
*) (value_list
->get_head_raw());
685 /* Constructors with exactly one scalar argument are special for vectors
686 * and matrices. For vectors, the scalar value is replicated to fill all
687 * the components. For matrices, the scalar fills the components of the
688 * diagonal while the rest is filled with 0.
690 if (value
->type
->is_scalar() && value
->next
->is_tail_sentinel()) {
691 if (type
->is_matrix()) {
692 /* Matrix - fill diagonal (rest is already set to 0) */
693 assert(type
->base_type
== GLSL_TYPE_FLOAT
||
694 type
->base_type
== GLSL_TYPE_DOUBLE
);
695 for (unsigned i
= 0; i
< type
->matrix_columns
; i
++) {
696 if (type
->base_type
== GLSL_TYPE_FLOAT
)
697 this->value
.f
[i
* type
->vector_elements
+ i
] =
700 this->value
.d
[i
* type
->vector_elements
+ i
] =
704 /* Vector or scalar - fill all components */
705 switch (type
->base_type
) {
708 for (unsigned i
= 0; i
< type
->components(); i
++)
709 this->value
.u
[i
] = value
->value
.u
[0];
711 case GLSL_TYPE_FLOAT
:
712 for (unsigned i
= 0; i
< type
->components(); i
++)
713 this->value
.f
[i
] = value
->value
.f
[0];
715 case GLSL_TYPE_DOUBLE
:
716 for (unsigned i
= 0; i
< type
->components(); i
++)
717 this->value
.d
[i
] = value
->value
.d
[0];
720 for (unsigned i
= 0; i
< type
->components(); i
++)
721 this->value
.b
[i
] = value
->value
.b
[0];
724 assert(!"Should not get here.");
731 if (type
->is_matrix() && value
->type
->is_matrix()) {
732 assert(value
->next
->is_tail_sentinel());
734 /* From section 5.4.2 of the GLSL 1.20 spec:
735 * "If a matrix is constructed from a matrix, then each component
736 * (column i, row j) in the result that has a corresponding component
737 * (column i, row j) in the argument will be initialized from there."
739 unsigned cols
= MIN2(type
->matrix_columns
, value
->type
->matrix_columns
);
740 unsigned rows
= MIN2(type
->vector_elements
, value
->type
->vector_elements
);
741 for (unsigned i
= 0; i
< cols
; i
++) {
742 for (unsigned j
= 0; j
< rows
; j
++) {
743 const unsigned src
= i
* value
->type
->vector_elements
+ j
;
744 const unsigned dst
= i
* type
->vector_elements
+ j
;
745 this->value
.f
[dst
] = value
->value
.f
[src
];
749 /* "All other components will be initialized to the identity matrix." */
750 for (unsigned i
= cols
; i
< type
->matrix_columns
; i
++)
751 this->value
.f
[i
* type
->vector_elements
+ i
] = 1.0;
756 /* Use each component from each entry in the value_list to initialize one
757 * component of the constant being constructed.
761 assert(value
->as_constant() != NULL
);
762 assert(!value
->is_tail_sentinel());
764 for (unsigned j
= 0; j
< value
->type
->components(); j
++) {
765 switch (type
->base_type
) {
767 this->value
.u
[i
] = value
->get_uint_component(j
);
770 this->value
.i
[i
] = value
->get_int_component(j
);
772 case GLSL_TYPE_FLOAT
:
773 this->value
.f
[i
] = value
->get_float_component(j
);
776 this->value
.b
[i
] = value
->get_bool_component(j
);
778 case GLSL_TYPE_DOUBLE
:
779 this->value
.d
[i
] = value
->get_double_component(j
);
782 /* FINISHME: What to do? Exceptions are not the answer.
788 if (i
>= type
->components())
792 if (i
>= type
->components())
793 break; /* avoid downcasting a list sentinel */
794 value
= (ir_constant
*) value
->next
;
799 ir_constant::zero(void *mem_ctx
, const glsl_type
*type
)
801 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
802 || type
->is_record() || type
->is_array());
804 ir_constant
*c
= new(mem_ctx
) ir_constant
;
806 memset(&c
->value
, 0, sizeof(c
->value
));
808 if (type
->is_array()) {
809 c
->array_elements
= ralloc_array(c
, ir_constant
*, type
->length
);
811 for (unsigned i
= 0; i
< type
->length
; i
++)
812 c
->array_elements
[i
] = ir_constant::zero(c
, type
->fields
.array
);
815 if (type
->is_record()) {
816 for (unsigned i
= 0; i
< type
->length
; i
++) {
817 ir_constant
*comp
= ir_constant::zero(mem_ctx
, type
->fields
.structure
[i
].type
);
818 c
->components
.push_tail(comp
);
826 ir_constant::get_bool_component(unsigned i
) const
828 switch (this->type
->base_type
) {
829 case GLSL_TYPE_UINT
: return this->value
.u
[i
] != 0;
830 case GLSL_TYPE_INT
: return this->value
.i
[i
] != 0;
831 case GLSL_TYPE_FLOAT
: return ((int)this->value
.f
[i
]) != 0;
832 case GLSL_TYPE_BOOL
: return this->value
.b
[i
];
833 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
] != 0.0;
834 default: assert(!"Should not get here."); break;
837 /* Must return something to make the compiler happy. This is clearly an
844 ir_constant::get_float_component(unsigned i
) const
846 switch (this->type
->base_type
) {
847 case GLSL_TYPE_UINT
: return (float) this->value
.u
[i
];
848 case GLSL_TYPE_INT
: return (float) this->value
.i
[i
];
849 case GLSL_TYPE_FLOAT
: return this->value
.f
[i
];
850 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0f
: 0.0f
;
851 case GLSL_TYPE_DOUBLE
: return (float) this->value
.d
[i
];
852 default: assert(!"Should not get here."); break;
855 /* Must return something to make the compiler happy. This is clearly an
862 ir_constant::get_double_component(unsigned i
) const
864 switch (this->type
->base_type
) {
865 case GLSL_TYPE_UINT
: return (double) this->value
.u
[i
];
866 case GLSL_TYPE_INT
: return (double) this->value
.i
[i
];
867 case GLSL_TYPE_FLOAT
: return (double) this->value
.f
[i
];
868 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0 : 0.0;
869 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
];
870 default: assert(!"Should not get here."); break;
873 /* Must return something to make the compiler happy. This is clearly an
880 ir_constant::get_int_component(unsigned i
) const
882 switch (this->type
->base_type
) {
883 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
884 case GLSL_TYPE_INT
: return this->value
.i
[i
];
885 case GLSL_TYPE_FLOAT
: return (int) this->value
.f
[i
];
886 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
887 case GLSL_TYPE_DOUBLE
: return (int) this->value
.d
[i
];
888 default: assert(!"Should not get here."); break;
891 /* Must return something to make the compiler happy. This is clearly an
898 ir_constant::get_uint_component(unsigned i
) const
900 switch (this->type
->base_type
) {
901 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
902 case GLSL_TYPE_INT
: return this->value
.i
[i
];
903 case GLSL_TYPE_FLOAT
: return (unsigned) this->value
.f
[i
];
904 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
905 case GLSL_TYPE_DOUBLE
: return (unsigned) this->value
.d
[i
];
906 default: assert(!"Should not get here."); break;
909 /* Must return something to make the compiler happy. This is clearly an
916 ir_constant::get_array_element(unsigned i
) const
918 assert(this->type
->is_array());
920 /* From page 35 (page 41 of the PDF) of the GLSL 1.20 spec:
922 * "Behavior is undefined if a shader subscripts an array with an index
923 * less than 0 or greater than or equal to the size the array was
926 * Most out-of-bounds accesses are removed before things could get this far.
927 * There are cases where non-constant array index values can get constant
932 else if (i
>= this->type
->length
)
933 i
= this->type
->length
- 1;
935 return array_elements
[i
];
939 ir_constant::get_record_field(const char *name
)
941 int idx
= this->type
->field_index(name
);
946 if (this->components
.is_empty())
949 exec_node
*node
= this->components
.get_head_raw();
950 for (int i
= 0; i
< idx
; i
++) {
953 /* If the end of the list is encountered before the element matching the
954 * requested field is found, return NULL.
956 if (node
->is_tail_sentinel())
960 return (ir_constant
*) node
;
964 ir_constant::copy_offset(ir_constant
*src
, int offset
)
966 switch (this->type
->base_type
) {
969 case GLSL_TYPE_FLOAT
:
970 case GLSL_TYPE_DOUBLE
:
971 case GLSL_TYPE_BOOL
: {
972 unsigned int size
= src
->type
->components();
973 assert (size
<= this->type
->components() - offset
);
974 for (unsigned int i
=0; i
<size
; i
++) {
975 switch (this->type
->base_type
) {
977 value
.u
[i
+offset
] = src
->get_uint_component(i
);
980 value
.i
[i
+offset
] = src
->get_int_component(i
);
982 case GLSL_TYPE_FLOAT
:
983 value
.f
[i
+offset
] = src
->get_float_component(i
);
986 value
.b
[i
+offset
] = src
->get_bool_component(i
);
988 case GLSL_TYPE_DOUBLE
:
989 value
.d
[i
+offset
] = src
->get_double_component(i
);
991 default: // Shut up the compiler
998 case GLSL_TYPE_STRUCT
: {
999 assert (src
->type
== this->type
);
1000 this->components
.make_empty();
1001 foreach_in_list(ir_constant
, orig
, &src
->components
) {
1002 this->components
.push_tail(orig
->clone(this, NULL
));
1007 case GLSL_TYPE_ARRAY
: {
1008 assert (src
->type
== this->type
);
1009 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1010 this->array_elements
[i
] = src
->array_elements
[i
]->clone(this, NULL
);
1016 assert(!"Should not get here.");
1022 ir_constant::copy_masked_offset(ir_constant
*src
, int offset
, unsigned int mask
)
1024 assert (!type
->is_array() && !type
->is_record());
1026 if (!type
->is_vector() && !type
->is_matrix()) {
1032 for (int i
=0; i
<4; i
++) {
1033 if (mask
& (1 << i
)) {
1034 switch (this->type
->base_type
) {
1035 case GLSL_TYPE_UINT
:
1036 value
.u
[i
+offset
] = src
->get_uint_component(id
++);
1039 value
.i
[i
+offset
] = src
->get_int_component(id
++);
1041 case GLSL_TYPE_FLOAT
:
1042 value
.f
[i
+offset
] = src
->get_float_component(id
++);
1044 case GLSL_TYPE_BOOL
:
1045 value
.b
[i
+offset
] = src
->get_bool_component(id
++);
1047 case GLSL_TYPE_DOUBLE
:
1048 value
.d
[i
+offset
] = src
->get_double_component(id
++);
1051 assert(!"Should not get here.");
1059 ir_constant::has_value(const ir_constant
*c
) const
1061 if (this->type
!= c
->type
)
1064 if (this->type
->is_array()) {
1065 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1066 if (!this->array_elements
[i
]->has_value(c
->array_elements
[i
]))
1072 if (this->type
->base_type
== GLSL_TYPE_STRUCT
) {
1073 const exec_node
*a_node
= this->components
.get_head_raw();
1074 const exec_node
*b_node
= c
->components
.get_head_raw();
1076 while (!a_node
->is_tail_sentinel()) {
1077 assert(!b_node
->is_tail_sentinel());
1079 const ir_constant
*const a_field
= (ir_constant
*) a_node
;
1080 const ir_constant
*const b_field
= (ir_constant
*) b_node
;
1082 if (!a_field
->has_value(b_field
))
1085 a_node
= a_node
->next
;
1086 b_node
= b_node
->next
;
1092 for (unsigned i
= 0; i
< this->type
->components(); i
++) {
1093 switch (this->type
->base_type
) {
1094 case GLSL_TYPE_UINT
:
1095 if (this->value
.u
[i
] != c
->value
.u
[i
])
1099 if (this->value
.i
[i
] != c
->value
.i
[i
])
1102 case GLSL_TYPE_FLOAT
:
1103 if (this->value
.f
[i
] != c
->value
.f
[i
])
1106 case GLSL_TYPE_BOOL
:
1107 if (this->value
.b
[i
] != c
->value
.b
[i
])
1110 case GLSL_TYPE_DOUBLE
:
1111 if (this->value
.d
[i
] != c
->value
.d
[i
])
1115 assert(!"Should not get here.");
1124 ir_constant::is_value(float f
, int i
) const
1126 if (!this->type
->is_scalar() && !this->type
->is_vector())
1129 /* Only accept boolean values for 0/1. */
1130 if (int(bool(i
)) != i
&& this->type
->is_boolean())
1133 for (unsigned c
= 0; c
< this->type
->vector_elements
; c
++) {
1134 switch (this->type
->base_type
) {
1135 case GLSL_TYPE_FLOAT
:
1136 if (this->value
.f
[c
] != f
)
1140 if (this->value
.i
[c
] != i
)
1143 case GLSL_TYPE_UINT
:
1144 if (this->value
.u
[c
] != unsigned(i
))
1147 case GLSL_TYPE_BOOL
:
1148 if (this->value
.b
[c
] != bool(i
))
1151 case GLSL_TYPE_DOUBLE
:
1152 if (this->value
.d
[c
] != double(f
))
1156 /* The only other base types are structures, arrays, and samplers.
1157 * Samplers cannot be constants, and the others should have been
1158 * filtered out above.
1160 assert(!"Should not get here.");
1169 ir_constant::is_zero() const
1171 return is_value(0.0, 0);
1175 ir_constant::is_one() const
1177 return is_value(1.0, 1);
1181 ir_constant::is_negative_one() const
1183 return is_value(-1.0, -1);
1187 ir_constant::is_uint16_constant() const
1189 if (!type
->is_integer())
1192 return value
.u
[0] < (1 << 16);
1196 : ir_instruction(ir_type_loop
)
1201 ir_dereference_variable::ir_dereference_variable(ir_variable
*var
)
1202 : ir_dereference(ir_type_dereference_variable
)
1204 assert(var
!= NULL
);
1207 this->type
= var
->type
;
1211 ir_dereference_array::ir_dereference_array(ir_rvalue
*value
,
1212 ir_rvalue
*array_index
)
1213 : ir_dereference(ir_type_dereference_array
)
1215 this->array_index
= array_index
;
1216 this->set_array(value
);
1220 ir_dereference_array::ir_dereference_array(ir_variable
*var
,
1221 ir_rvalue
*array_index
)
1222 : ir_dereference(ir_type_dereference_array
)
1224 void *ctx
= ralloc_parent(var
);
1226 this->array_index
= array_index
;
1227 this->set_array(new(ctx
) ir_dereference_variable(var
));
1232 ir_dereference_array::set_array(ir_rvalue
*value
)
1234 assert(value
!= NULL
);
1236 this->array
= value
;
1238 const glsl_type
*const vt
= this->array
->type
;
1240 if (vt
->is_array()) {
1241 type
= vt
->fields
.array
;
1242 } else if (vt
->is_matrix()) {
1243 type
= vt
->column_type();
1244 } else if (vt
->is_vector()) {
1245 type
= vt
->get_base_type();
1250 ir_dereference_record::ir_dereference_record(ir_rvalue
*value
,
1252 : ir_dereference(ir_type_dereference_record
)
1254 assert(value
!= NULL
);
1256 this->record
= value
;
1257 this->field
= ralloc_strdup(this, field
);
1258 this->type
= this->record
->type
->field_type(field
);
1262 ir_dereference_record::ir_dereference_record(ir_variable
*var
,
1264 : ir_dereference(ir_type_dereference_record
)
1266 void *ctx
= ralloc_parent(var
);
1268 this->record
= new(ctx
) ir_dereference_variable(var
);
1269 this->field
= ralloc_strdup(this, field
);
1270 this->type
= this->record
->type
->field_type(field
);
1274 ir_dereference::is_lvalue() const
1276 ir_variable
*var
= this->variable_referenced();
1278 /* Every l-value derference chain eventually ends in a variable.
1280 if ((var
== NULL
) || var
->data
.read_only
)
1283 /* From section 4.1.7 of the GLSL 4.40 spec:
1285 * "Opaque variables cannot be treated as l-values; hence cannot
1286 * be used as out or inout function parameters, nor can they be
1289 if (this->type
->contains_opaque())
1296 static const char * const tex_opcode_strs
[] = { "tex", "txb", "txl", "txd", "txf", "txf_ms", "txs", "lod", "tg4", "query_levels", "texture_samples", "samples_identical" };
1298 const char *ir_texture::opcode_string()
1300 assert((unsigned int) op
< ARRAY_SIZE(tex_opcode_strs
));
1301 return tex_opcode_strs
[op
];
1305 ir_texture::get_opcode(const char *str
)
1307 const int count
= sizeof(tex_opcode_strs
) / sizeof(tex_opcode_strs
[0]);
1308 for (int op
= 0; op
< count
; op
++) {
1309 if (strcmp(str
, tex_opcode_strs
[op
]) == 0)
1310 return (ir_texture_opcode
) op
;
1312 return (ir_texture_opcode
) -1;
1317 ir_texture::set_sampler(ir_dereference
*sampler
, const glsl_type
*type
)
1319 assert(sampler
!= NULL
);
1320 assert(type
!= NULL
);
1321 this->sampler
= sampler
;
1324 if (this->op
== ir_txs
|| this->op
== ir_query_levels
||
1325 this->op
== ir_texture_samples
) {
1326 assert(type
->base_type
== GLSL_TYPE_INT
);
1327 } else if (this->op
== ir_lod
) {
1328 assert(type
->vector_elements
== 2);
1329 assert(type
->base_type
== GLSL_TYPE_FLOAT
);
1330 } else if (this->op
== ir_samples_identical
) {
1331 assert(type
== glsl_type::bool_type
);
1332 assert(sampler
->type
->base_type
== GLSL_TYPE_SAMPLER
);
1333 assert(sampler
->type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
);
1335 assert(sampler
->type
->sampled_type
== (int) type
->base_type
);
1336 if (sampler
->type
->sampler_shadow
)
1337 assert(type
->vector_elements
== 4 || type
->vector_elements
== 1);
1339 assert(type
->vector_elements
== 4);
1345 ir_swizzle::init_mask(const unsigned *comp
, unsigned count
)
1347 assert((count
>= 1) && (count
<= 4));
1349 memset(&this->mask
, 0, sizeof(this->mask
));
1350 this->mask
.num_components
= count
;
1352 unsigned dup_mask
= 0;
1355 assert(comp
[3] <= 3);
1356 dup_mask
|= (1U << comp
[3])
1357 & ((1U << comp
[0]) | (1U << comp
[1]) | (1U << comp
[2]));
1358 this->mask
.w
= comp
[3];
1361 assert(comp
[2] <= 3);
1362 dup_mask
|= (1U << comp
[2])
1363 & ((1U << comp
[0]) | (1U << comp
[1]));
1364 this->mask
.z
= comp
[2];
1367 assert(comp
[1] <= 3);
1368 dup_mask
|= (1U << comp
[1])
1369 & ((1U << comp
[0]));
1370 this->mask
.y
= comp
[1];
1373 assert(comp
[0] <= 3);
1374 this->mask
.x
= comp
[0];
1377 this->mask
.has_duplicates
= dup_mask
!= 0;
1379 /* Based on the number of elements in the swizzle and the base type
1380 * (i.e., float, int, unsigned, or bool) of the vector being swizzled,
1381 * generate the type of the resulting value.
1383 type
= glsl_type::get_instance(val
->type
->base_type
, mask
.num_components
, 1);
1386 ir_swizzle::ir_swizzle(ir_rvalue
*val
, unsigned x
, unsigned y
, unsigned z
,
1387 unsigned w
, unsigned count
)
1388 : ir_rvalue(ir_type_swizzle
), val(val
)
1390 const unsigned components
[4] = { x
, y
, z
, w
};
1391 this->init_mask(components
, count
);
1394 ir_swizzle::ir_swizzle(ir_rvalue
*val
, const unsigned *comp
,
1396 : ir_rvalue(ir_type_swizzle
), val(val
)
1398 this->init_mask(comp
, count
);
1401 ir_swizzle::ir_swizzle(ir_rvalue
*val
, ir_swizzle_mask mask
)
1402 : ir_rvalue(ir_type_swizzle
)
1406 this->type
= glsl_type::get_instance(val
->type
->base_type
,
1407 mask
.num_components
, 1);
1416 ir_swizzle::create(ir_rvalue
*val
, const char *str
, unsigned vector_length
)
1418 void *ctx
= ralloc_parent(val
);
1420 /* For each possible swizzle character, this table encodes the value in
1421 * \c idx_map that represents the 0th element of the vector. For invalid
1422 * swizzle characters (e.g., 'k'), a special value is used that will allow
1423 * detection of errors.
1425 static const unsigned char base_idx
[26] = {
1426 /* a b c d e f g h i j k l m */
1427 R
, R
, I
, I
, I
, I
, R
, I
, I
, I
, I
, I
, I
,
1428 /* n o p q r s t u v w x y z */
1429 I
, I
, S
, S
, R
, S
, S
, I
, I
, X
, X
, X
, X
1432 /* Each valid swizzle character has an entry in the previous table. This
1433 * table encodes the base index encoded in the previous table plus the actual
1434 * index of the swizzle character. When processing swizzles, the first
1435 * character in the string is indexed in the previous table. Each character
1436 * in the string is indexed in this table, and the value found there has the
1437 * value form the first table subtracted. The result must be on the range
1440 * For example, the string "wzyx" will get X from the first table. Each of
1441 * the charcaters will get X+3, X+2, X+1, and X+0 from this table. After
1442 * subtraction, the swizzle values are { 3, 2, 1, 0 }.
1444 * The string "wzrg" will get X from the first table. Each of the characters
1445 * will get X+3, X+2, R+0, and R+1 from this table. After subtraction, the
1446 * swizzle values are { 3, 2, 4, 5 }. Since 4 and 5 are outside the range
1447 * [0,3], the error is detected.
1449 static const unsigned char idx_map
[26] = {
1450 /* a b c d e f g h i j k l m */
1451 R
+3, R
+2, 0, 0, 0, 0, R
+1, 0, 0, 0, 0, 0, 0,
1452 /* n o p q r s t u v w x y z */
1453 0, 0, S
+2, S
+3, R
+0, S
+0, S
+1, 0, 0, X
+3, X
+0, X
+1, X
+2
1456 int swiz_idx
[4] = { 0, 0, 0, 0 };
1460 /* Validate the first character in the swizzle string and look up the base
1461 * index value as described above.
1463 if ((str
[0] < 'a') || (str
[0] > 'z'))
1466 const unsigned base
= base_idx
[str
[0] - 'a'];
1469 for (i
= 0; (i
< 4) && (str
[i
] != '\0'); i
++) {
1470 /* Validate the next character, and, as described above, convert it to a
1473 if ((str
[i
] < 'a') || (str
[i
] > 'z'))
1476 swiz_idx
[i
] = idx_map
[str
[i
] - 'a'] - base
;
1477 if ((swiz_idx
[i
] < 0) || (swiz_idx
[i
] >= (int) vector_length
))
1484 return new(ctx
) ir_swizzle(val
, swiz_idx
[0], swiz_idx
[1], swiz_idx
[2],
1494 ir_swizzle::variable_referenced() const
1496 return this->val
->variable_referenced();
1500 bool ir_variable::temporaries_allocate_names
= false;
1502 const char ir_variable::tmp_name
[] = "compiler_temp";
1504 ir_variable::ir_variable(const struct glsl_type
*type
, const char *name
,
1505 ir_variable_mode mode
)
1506 : ir_instruction(ir_type_variable
)
1510 if (mode
== ir_var_temporary
&& !ir_variable::temporaries_allocate_names
)
1513 /* The ir_variable clone method may call this constructor with name set to
1517 || mode
== ir_var_temporary
1518 || mode
== ir_var_function_in
1519 || mode
== ir_var_function_out
1520 || mode
== ir_var_function_inout
);
1521 assert(name
!= ir_variable::tmp_name
1522 || mode
== ir_var_temporary
);
1523 if (mode
== ir_var_temporary
1524 && (name
== NULL
|| name
== ir_variable::tmp_name
)) {
1525 this->name
= ir_variable::tmp_name
;
1526 } else if (name
== NULL
||
1527 strlen(name
) < ARRAY_SIZE(this->name_storage
)) {
1528 strcpy(this->name_storage
, name
? name
: "");
1529 this->name
= this->name_storage
;
1531 this->name
= ralloc_strdup(this, name
);
1534 this->u
.max_ifc_array_access
= NULL
;
1536 this->data
.explicit_location
= false;
1537 this->data
.has_initializer
= false;
1538 this->data
.location
= -1;
1539 this->data
.location_frac
= 0;
1540 this->data
.binding
= 0;
1541 this->data
.warn_extension_index
= 0;
1542 this->constant_value
= NULL
;
1543 this->constant_initializer
= NULL
;
1544 this->data
.origin_upper_left
= false;
1545 this->data
.pixel_center_integer
= false;
1546 this->data
.depth_layout
= ir_depth_layout_none
;
1547 this->data
.used
= false;
1548 this->data
.always_active_io
= false;
1549 this->data
.read_only
= false;
1550 this->data
.centroid
= false;
1551 this->data
.sample
= false;
1552 this->data
.patch
= false;
1553 this->data
.invariant
= false;
1554 this->data
.how_declared
= ir_var_declared_normally
;
1555 this->data
.mode
= mode
;
1556 this->data
.interpolation
= INTERP_MODE_NONE
;
1557 this->data
.max_array_access
= -1;
1558 this->data
.offset
= 0;
1559 this->data
.precision
= GLSL_PRECISION_NONE
;
1560 this->data
.image_read_only
= false;
1561 this->data
.image_write_only
= false;
1562 this->data
.image_coherent
= false;
1563 this->data
.image_volatile
= false;
1564 this->data
.image_restrict
= false;
1565 this->data
.from_ssbo_unsized_array
= false;
1566 this->data
.fb_fetch_output
= false;
1569 if (type
->base_type
== GLSL_TYPE_SAMPLER
)
1570 this->data
.read_only
= true;
1572 if (type
->is_interface())
1573 this->init_interface_type(type
);
1574 else if (type
->without_array()->is_interface())
1575 this->init_interface_type(type
->without_array());
1581 interpolation_string(unsigned interpolation
)
1583 switch (interpolation
) {
1584 case INTERP_MODE_NONE
: return "no";
1585 case INTERP_MODE_SMOOTH
: return "smooth";
1586 case INTERP_MODE_FLAT
: return "flat";
1587 case INTERP_MODE_NOPERSPECTIVE
: return "noperspective";
1590 assert(!"Should not get here.");
1594 const char *const ir_variable::warn_extension_table
[] = {
1596 "GL_ARB_shader_stencil_export",
1597 "GL_AMD_shader_stencil_export",
1601 ir_variable::enable_extension_warning(const char *extension
)
1603 for (unsigned i
= 0; i
< ARRAY_SIZE(warn_extension_table
); i
++) {
1604 if (strcmp(warn_extension_table
[i
], extension
) == 0) {
1605 this->data
.warn_extension_index
= i
;
1610 assert(!"Should not get here.");
1611 this->data
.warn_extension_index
= 0;
1615 ir_variable::get_extension_warning() const
1617 return this->data
.warn_extension_index
== 0
1618 ? NULL
: warn_extension_table
[this->data
.warn_extension_index
];
1622 ir_variable::count_attribute_slots(bool is_vertex_stage
) const
1624 /* GLSL contains several built-in arrays that control fixed-function
1625 * hardware, and are somewhat special. Clip distances and tessellation
1626 * factors are exposed as float[] arrays, but typically are packed
1627 * tightly. We want to expose these as taking a single varying slot
1628 * and let drivers handle laying them out appropriately.
1630 * Skip this override if the arrays were lowered to vectors.
1632 if (type
->without_array()->is_scalar() &&
1633 (data
.mode
== ir_var_shader_in
|| data
.mode
== ir_var_shader_out
) &&
1634 (data
.location
== VARYING_SLOT_CLIP_DIST0
||
1635 data
.location
== VARYING_SLOT_CULL_DIST0
||
1636 data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
||
1637 data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
)) {
1638 return type
->length
/ 4;
1641 /* For normal variables, simply consult the type. */
1642 bool is_vs_input
= is_vertex_stage
&& this->data
.mode
== ir_var_shader_in
;
1643 return this->type
->count_attribute_slots(is_vs_input
);
1646 ir_function_signature::ir_function_signature(const glsl_type
*return_type
,
1647 builtin_available_predicate b
)
1648 : ir_instruction(ir_type_function_signature
),
1649 return_type(return_type
), is_defined(false),
1650 intrinsic_id(ir_intrinsic_invalid
), builtin_avail(b
), _function(NULL
)
1652 this->origin
= NULL
;
1657 ir_function_signature::is_builtin() const
1659 return builtin_avail
!= NULL
;
1664 ir_function_signature::is_builtin_available(const _mesa_glsl_parse_state
*state
) const
1666 /* We can't call the predicate without a state pointer, so just say that
1667 * the signature is available. At compile time, we need the filtering,
1668 * but also receive a valid state pointer. At link time, we're resolving
1669 * imported built-in prototypes to their definitions, which will always
1670 * be an exact match. So we can skip the filtering.
1675 assert(builtin_avail
!= NULL
);
1676 return builtin_avail(state
);
1681 modes_match(unsigned a
, unsigned b
)
1686 /* Accept "in" vs. "const in" */
1687 if ((a
== ir_var_const_in
&& b
== ir_var_function_in
) ||
1688 (b
== ir_var_const_in
&& a
== ir_var_function_in
))
1696 ir_function_signature::qualifiers_match(exec_list
*params
)
1698 /* check that the qualifiers match. */
1699 foreach_two_lists(a_node
, &this->parameters
, b_node
, params
) {
1700 ir_variable
*a
= (ir_variable
*) a_node
;
1701 ir_variable
*b
= (ir_variable
*) b_node
;
1703 if (a
->data
.read_only
!= b
->data
.read_only
||
1704 !modes_match(a
->data
.mode
, b
->data
.mode
) ||
1705 a
->data
.interpolation
!= b
->data
.interpolation
||
1706 a
->data
.centroid
!= b
->data
.centroid
||
1707 a
->data
.sample
!= b
->data
.sample
||
1708 a
->data
.patch
!= b
->data
.patch
||
1709 a
->data
.image_read_only
!= b
->data
.image_read_only
||
1710 a
->data
.image_write_only
!= b
->data
.image_write_only
||
1711 a
->data
.image_coherent
!= b
->data
.image_coherent
||
1712 a
->data
.image_volatile
!= b
->data
.image_volatile
||
1713 a
->data
.image_restrict
!= b
->data
.image_restrict
) {
1715 /* parameter a's qualifiers don't match */
1724 ir_function_signature::replace_parameters(exec_list
*new_params
)
1726 /* Destroy all of the previous parameter information. If the previous
1727 * parameter information comes from the function prototype, it may either
1728 * specify incorrect parameter names or not have names at all.
1730 new_params
->move_nodes_to(¶meters
);
1734 ir_function::ir_function(const char *name
)
1735 : ir_instruction(ir_type_function
)
1737 this->subroutine_index
= -1;
1738 this->name
= ralloc_strdup(this, name
);
1743 ir_function::has_user_signature()
1745 foreach_in_list(ir_function_signature
, sig
, &this->signatures
) {
1746 if (!sig
->is_builtin())
1754 ir_rvalue::error_value(void *mem_ctx
)
1756 ir_rvalue
*v
= new(mem_ctx
) ir_rvalue(ir_type_unset
);
1758 v
->type
= glsl_type::error_type
;
1764 visit_exec_list(exec_list
*list
, ir_visitor
*visitor
)
1766 foreach_in_list_safe(ir_instruction
, node
, list
) {
1767 node
->accept(visitor
);
1773 steal_memory(ir_instruction
*ir
, void *new_ctx
)
1775 ir_variable
*var
= ir
->as_variable();
1776 ir_function
*fn
= ir
->as_function();
1777 ir_constant
*constant
= ir
->as_constant();
1778 if (var
!= NULL
&& var
->constant_value
!= NULL
)
1779 steal_memory(var
->constant_value
, ir
);
1781 if (var
!= NULL
&& var
->constant_initializer
!= NULL
)
1782 steal_memory(var
->constant_initializer
, ir
);
1784 if (fn
!= NULL
&& fn
->subroutine_types
)
1785 ralloc_steal(new_ctx
, fn
->subroutine_types
);
1787 /* The components of aggregate constants are not visited by the normal
1788 * visitor, so steal their values by hand.
1790 if (constant
!= NULL
) {
1791 if (constant
->type
->is_record()) {
1792 foreach_in_list(ir_constant
, field
, &constant
->components
) {
1793 steal_memory(field
, ir
);
1795 } else if (constant
->type
->is_array()) {
1796 for (unsigned int i
= 0; i
< constant
->type
->length
; i
++) {
1797 steal_memory(constant
->array_elements
[i
], ir
);
1802 ralloc_steal(new_ctx
, ir
);
1807 reparent_ir(exec_list
*list
, void *mem_ctx
)
1809 foreach_in_list(ir_instruction
, node
, list
) {
1810 visit_tree(node
, steal_memory
, mem_ctx
);
1816 try_min_one(ir_rvalue
*ir
)
1818 ir_expression
*expr
= ir
->as_expression();
1820 if (!expr
|| expr
->operation
!= ir_binop_min
)
1823 if (expr
->operands
[0]->is_one())
1824 return expr
->operands
[1];
1826 if (expr
->operands
[1]->is_one())
1827 return expr
->operands
[0];
1833 try_max_zero(ir_rvalue
*ir
)
1835 ir_expression
*expr
= ir
->as_expression();
1837 if (!expr
|| expr
->operation
!= ir_binop_max
)
1840 if (expr
->operands
[0]->is_zero())
1841 return expr
->operands
[1];
1843 if (expr
->operands
[1]->is_zero())
1844 return expr
->operands
[0];
1850 ir_rvalue::as_rvalue_to_saturate()
1852 ir_expression
*expr
= this->as_expression();
1857 ir_rvalue
*max_zero
= try_max_zero(expr
);
1859 return try_min_one(max_zero
);
1861 ir_rvalue
*min_one
= try_min_one(expr
);
1863 return try_max_zero(min_one
);
1872 vertices_per_prim(GLenum prim
)
1881 case GL_LINES_ADJACENCY
:
1883 case GL_TRIANGLES_ADJACENCY
:
1886 assert(!"Bad primitive");
1892 * Generate a string describing the mode of a variable
1895 mode_string(const ir_variable
*var
)
1897 switch (var
->data
.mode
) {
1899 return (var
->data
.read_only
) ? "global constant" : "global variable";
1901 case ir_var_uniform
:
1904 case ir_var_shader_storage
:
1907 case ir_var_shader_in
:
1908 return "shader input";
1910 case ir_var_shader_out
:
1911 return "shader output";
1913 case ir_var_function_in
:
1914 case ir_var_const_in
:
1915 return "function input";
1917 case ir_var_function_out
:
1918 return "function output";
1920 case ir_var_function_inout
:
1921 return "function inout";
1923 case ir_var_system_value
:
1924 return "shader input";
1926 case ir_var_temporary
:
1927 return "compiler temporary";
1929 case ir_var_mode_count
:
1933 assert(!"Should not get here.");
1934 return "invalid variable";