2 * Copyright © 2010 Intel Corporation
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5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
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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
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21 * DEALINGS IN THE SOFTWARE.
24 #include "main/imports.h"
25 #include "main/macros.h"
27 #include "ir_visitor.h"
28 #include "glsl_types.h"
30 ir_rvalue::ir_rvalue()
32 this->type
= glsl_type::error_type
;
36 * Modify the swizzle make to move one component to another
38 * \param m IR swizzle to be modified
39 * \param from Component in the RHS that is to be swizzled
40 * \param to Desired swizzle location of \c from
43 update_rhs_swizzle(ir_swizzle_mask
&m
, unsigned from
, unsigned to
)
46 case 0: m
.x
= from
; break;
47 case 1: m
.y
= from
; break;
48 case 2: m
.z
= from
; break;
49 case 3: m
.w
= from
; break;
50 default: assert(!"Should not get here.");
53 m
.num_components
= MAX2(m
.num_components
, (to
+ 1));
57 ir_assignment::set_lhs(ir_rvalue
*lhs
)
60 ir_swizzle
*swiz
= lhs
->as_swizzle();
65 unsigned write_mask
= 0;
66 ir_swizzle_mask rhs_swiz
= { 0, 0, 0, 0, 0, 0 };
68 for (unsigned i
= 0; i
< swiz
->mask
.num_components
; i
++) {
72 case 0: c
= swiz
->mask
.x
; break;
73 case 1: c
= swiz
->mask
.y
; break;
74 case 2: c
= swiz
->mask
.z
; break;
75 case 3: c
= swiz
->mask
.w
; break;
76 default: assert(!"Should not get here.");
79 write_mask
|= (((this->write_mask
>> i
) & 1) << c
);
80 update_rhs_swizzle(rhs_swiz
, i
, c
);
83 this->write_mask
= write_mask
;
86 this->rhs
= new(this) ir_swizzle(this->rhs
, rhs_swiz
);
89 assert((lhs
== NULL
) || lhs
->as_dereference());
91 this->lhs
= (ir_dereference
*) lhs
;
95 ir_assignment::whole_variable_written()
97 ir_variable
*v
= this->lhs
->whole_variable_referenced();
102 if (v
->type
->is_scalar())
105 if (v
->type
->is_vector()) {
106 const unsigned mask
= (1U << v
->type
->vector_elements
) - 1;
108 if (mask
!= this->write_mask
)
112 /* Either all the vector components are assigned or the variable is some
113 * composite type (and the whole thing is assigned.
118 ir_assignment::ir_assignment(ir_dereference
*lhs
, ir_rvalue
*rhs
,
119 ir_rvalue
*condition
, unsigned write_mask
)
121 this->ir_type
= ir_type_assignment
;
122 this->condition
= condition
;
125 this->write_mask
= write_mask
;
128 ir_assignment::ir_assignment(ir_rvalue
*lhs
, ir_rvalue
*rhs
,
129 ir_rvalue
*condition
)
131 this->ir_type
= ir_type_assignment
;
132 this->condition
= condition
;
135 /* If the RHS is a vector type, assume that all components of the vector
136 * type are being written to the LHS. The write mask comes from the RHS
137 * because we can have a case where the LHS is a vec4 and the RHS is a
138 * vec3. In that case, the assignment is:
140 * (assign (...) (xyz) (var_ref lhs) (var_ref rhs))
142 if (rhs
->type
->is_vector())
143 this->write_mask
= (1U << rhs
->type
->vector_elements
) - 1;
144 else if (rhs
->type
->is_scalar())
145 this->write_mask
= 1;
147 this->write_mask
= 0;
153 ir_expression::ir_expression(int op
, const struct glsl_type
*type
,
154 ir_rvalue
*op0
, ir_rvalue
*op1
)
156 this->ir_type
= ir_type_expression
;
158 this->operation
= ir_expression_operation(op
);
159 this->operands
[0] = op0
;
160 this->operands
[1] = op1
;
164 ir_expression::get_num_operands(ir_expression_operation op
)
166 /* Update ir_print_visitor.cpp when updating this list. */
167 const int num_operands
[] = {
168 1, /* ir_unop_bit_not */
169 1, /* ir_unop_logic_not */
172 1, /* ir_unop_sign */
175 1, /* ir_unop_sqrt */
178 1, /* ir_unop_exp2 */
179 1, /* ir_unop_log2 */
188 1, /* ir_unop_trunc */
189 1, /* ir_unop_ceil */
190 1, /* ir_unop_floor */
191 1, /* ir_unop_fract */
196 1, /* ir_unop_dFdx */
197 1, /* ir_unop_dFdy */
199 2, /* ir_binop_add */
200 2, /* ir_binop_sub */
201 2, /* ir_binop_mul */
202 2, /* ir_binop_div */
203 2, /* ir_binop_mod */
205 2, /* ir_binop_less */
206 2, /* ir_binop_greater */
207 2, /* ir_binop_lequal */
208 2, /* ir_binop_gequal */
209 2, /* ir_binop_equal */
210 2, /* ir_binop_nequal */
212 2, /* ir_binop_lshift */
213 2, /* ir_binop_rshift */
214 2, /* ir_binop_bit_and */
215 2, /* ir_binop_bit_xor */
216 2, /* ir_binop_bit_or */
218 2, /* ir_binop_logic_and */
219 2, /* ir_binop_logic_xor */
220 2, /* ir_binop_logic_or */
222 2, /* ir_binop_dot */
223 2, /* ir_binop_cross */
224 2, /* ir_binop_min */
225 2, /* ir_binop_max */
227 2, /* ir_binop_pow */
230 assert(sizeof(num_operands
) / sizeof(num_operands
[0]) == ir_binop_pow
+ 1);
232 return num_operands
[op
];
235 static const char *const operator_strs
[] = {
289 const char *ir_expression::operator_string()
291 assert((unsigned int) operation
<=
292 sizeof(operator_strs
) / sizeof(operator_strs
[0]));
293 return operator_strs
[operation
];
296 ir_expression_operation
297 ir_expression::get_operator(const char *str
)
299 const int operator_count
= sizeof(operator_strs
) / sizeof(operator_strs
[0]);
300 for (int op
= 0; op
< operator_count
; op
++) {
301 if (strcmp(str
, operator_strs
[op
]) == 0)
302 return (ir_expression_operation
) op
;
304 return (ir_expression_operation
) -1;
307 ir_constant::ir_constant()
309 this->ir_type
= ir_type_constant
;
312 ir_constant::ir_constant(const struct glsl_type
*type
,
313 const ir_constant_data
*data
)
315 assert((type
->base_type
>= GLSL_TYPE_UINT
)
316 && (type
->base_type
<= GLSL_TYPE_BOOL
));
318 this->ir_type
= ir_type_constant
;
320 memcpy(& this->value
, data
, sizeof(this->value
));
323 ir_constant::ir_constant(float f
)
325 this->ir_type
= ir_type_constant
;
326 this->type
= glsl_type::float_type
;
327 this->value
.f
[0] = f
;
330 ir_constant::ir_constant(unsigned int u
)
332 this->ir_type
= ir_type_constant
;
333 this->type
= glsl_type::uint_type
;
334 this->value
.u
[0] = u
;
337 ir_constant::ir_constant(int i
)
339 this->ir_type
= ir_type_constant
;
340 this->type
= glsl_type::int_type
;
341 this->value
.i
[0] = i
;
344 ir_constant::ir_constant(bool b
)
346 this->ir_type
= ir_type_constant
;
347 this->type
= glsl_type::bool_type
;
348 this->value
.b
[0] = b
;
351 ir_constant::ir_constant(const ir_constant
*c
, unsigned i
)
353 this->ir_type
= ir_type_constant
;
354 this->type
= c
->type
->get_base_type();
356 switch (this->type
->base_type
) {
357 case GLSL_TYPE_UINT
: this->value
.u
[0] = c
->value
.u
[i
]; break;
358 case GLSL_TYPE_INT
: this->value
.i
[0] = c
->value
.i
[i
]; break;
359 case GLSL_TYPE_FLOAT
: this->value
.f
[0] = c
->value
.f
[i
]; break;
360 case GLSL_TYPE_BOOL
: this->value
.b
[0] = c
->value
.b
[i
]; break;
361 default: assert(!"Should not get here."); break;
365 ir_constant::ir_constant(const struct glsl_type
*type
, exec_list
*value_list
)
367 this->ir_type
= ir_type_constant
;
370 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
371 || type
->is_record() || type
->is_array());
373 if (type
->is_array()) {
374 this->array_elements
= talloc_array(this, ir_constant
*, type
->length
);
376 foreach_list(node
, value_list
) {
377 ir_constant
*value
= (ir_constant
*) node
;
378 assert(value
->as_constant() != NULL
);
380 this->array_elements
[i
++] = value
;
385 /* If the constant is a record, the types of each of the entries in
386 * value_list must be a 1-for-1 match with the structure components. Each
387 * entry must also be a constant. Just move the nodes from the value_list
388 * to the list in the ir_constant.
390 /* FINISHME: Should there be some type checking and / or assertions here? */
391 /* FINISHME: Should the new constant take ownership of the nodes from
392 * FINISHME: value_list, or should it make copies?
394 if (type
->is_record()) {
395 value_list
->move_nodes_to(& this->components
);
400 ir_constant
*value
= (ir_constant
*) (value_list
->head
);
402 /* Use each component from each entry in the value_list to initialize one
403 * component of the constant being constructed.
405 for (unsigned i
= 0; i
< type
->components(); /* empty */) {
406 assert(value
->as_constant() != NULL
);
407 assert(!value
->is_tail_sentinel());
409 for (unsigned j
= 0; j
< value
->type
->components(); j
++) {
410 switch (type
->base_type
) {
412 this->value
.u
[i
] = value
->get_uint_component(j
);
415 this->value
.i
[i
] = value
->get_int_component(j
);
417 case GLSL_TYPE_FLOAT
:
418 this->value
.f
[i
] = value
->get_float_component(j
);
421 this->value
.b
[i
] = value
->get_bool_component(j
);
424 /* FINISHME: What to do? Exceptions are not the answer.
430 if (i
>= type
->components())
434 value
= (ir_constant
*) value
->next
;
439 ir_constant::zero(void *mem_ctx
, const glsl_type
*type
)
441 assert(type
->is_numeric());
443 ir_constant
*c
= new(mem_ctx
) ir_constant
;
445 memset(&c
->value
, 0, sizeof(c
->value
));
451 ir_constant::get_bool_component(unsigned i
) const
453 switch (this->type
->base_type
) {
454 case GLSL_TYPE_UINT
: return this->value
.u
[i
] != 0;
455 case GLSL_TYPE_INT
: return this->value
.i
[i
] != 0;
456 case GLSL_TYPE_FLOAT
: return ((int)this->value
.f
[i
]) != 0;
457 case GLSL_TYPE_BOOL
: return this->value
.b
[i
];
458 default: assert(!"Should not get here."); break;
461 /* Must return something to make the compiler happy. This is clearly an
468 ir_constant::get_float_component(unsigned i
) const
470 switch (this->type
->base_type
) {
471 case GLSL_TYPE_UINT
: return (float) this->value
.u
[i
];
472 case GLSL_TYPE_INT
: return (float) this->value
.i
[i
];
473 case GLSL_TYPE_FLOAT
: return this->value
.f
[i
];
474 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0 : 0.0;
475 default: assert(!"Should not get here."); break;
478 /* Must return something to make the compiler happy. This is clearly an
485 ir_constant::get_int_component(unsigned i
) const
487 switch (this->type
->base_type
) {
488 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
489 case GLSL_TYPE_INT
: return this->value
.i
[i
];
490 case GLSL_TYPE_FLOAT
: return (int) this->value
.f
[i
];
491 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
492 default: assert(!"Should not get here."); break;
495 /* Must return something to make the compiler happy. This is clearly an
502 ir_constant::get_uint_component(unsigned i
) const
504 switch (this->type
->base_type
) {
505 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
506 case GLSL_TYPE_INT
: return this->value
.i
[i
];
507 case GLSL_TYPE_FLOAT
: return (unsigned) this->value
.f
[i
];
508 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
509 default: assert(!"Should not get here."); break;
512 /* Must return something to make the compiler happy. This is clearly an
519 ir_constant::get_array_element(unsigned i
) const
521 assert(this->type
->is_array());
522 assert(i
< this->type
->length
);
524 return array_elements
[i
];
528 ir_constant::get_record_field(const char *name
)
530 int idx
= this->type
->field_index(name
);
535 if (this->components
.is_empty())
538 exec_node
*node
= this->components
.head
;
539 for (int i
= 0; i
< idx
; i
++) {
542 /* If the end of the list is encountered before the element matching the
543 * requested field is found, return NULL.
545 if (node
->is_tail_sentinel())
549 return (ir_constant
*) node
;
554 ir_constant::has_value(const ir_constant
*c
) const
556 if (this->type
!= c
->type
)
559 if (this->type
->is_array()) {
560 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
561 if (this->array_elements
[i
]->has_value(c
->array_elements
[i
]))
567 if (this->type
->base_type
== GLSL_TYPE_STRUCT
) {
568 const exec_node
*a_node
= this->components
.head
;
569 const exec_node
*b_node
= c
->components
.head
;
571 while (!a_node
->is_tail_sentinel()) {
572 assert(!b_node
->is_tail_sentinel());
574 const ir_constant
*const a_field
= (ir_constant
*) a_node
;
575 const ir_constant
*const b_field
= (ir_constant
*) b_node
;
577 if (!a_field
->has_value(b_field
))
580 a_node
= a_node
->next
;
581 b_node
= b_node
->next
;
587 for (unsigned i
= 0; i
< this->type
->components(); i
++) {
588 switch (this->type
->base_type
) {
590 if (this->value
.u
[i
] != c
->value
.u
[i
])
594 if (this->value
.i
[i
] != c
->value
.i
[i
])
597 case GLSL_TYPE_FLOAT
:
598 if (this->value
.f
[i
] != c
->value
.f
[i
])
602 if (this->value
.b
[i
] != c
->value
.b
[i
])
606 assert(!"Should not get here.");
614 ir_dereference_variable::ir_dereference_variable(ir_variable
*var
)
616 this->ir_type
= ir_type_dereference_variable
;
618 this->type
= (var
!= NULL
) ? var
->type
: glsl_type::error_type
;
622 ir_dereference_array::ir_dereference_array(ir_rvalue
*value
,
623 ir_rvalue
*array_index
)
625 this->ir_type
= ir_type_dereference_array
;
626 this->array_index
= array_index
;
627 this->set_array(value
);
631 ir_dereference_array::ir_dereference_array(ir_variable
*var
,
632 ir_rvalue
*array_index
)
634 void *ctx
= talloc_parent(var
);
636 this->ir_type
= ir_type_dereference_array
;
637 this->array_index
= array_index
;
638 this->set_array(new(ctx
) ir_dereference_variable(var
));
643 ir_dereference_array::set_array(ir_rvalue
*value
)
646 this->type
= glsl_type::error_type
;
648 if (this->array
!= NULL
) {
649 const glsl_type
*const vt
= this->array
->type
;
651 if (vt
->is_array()) {
652 type
= vt
->element_type();
653 } else if (vt
->is_matrix()) {
654 type
= vt
->column_type();
655 } else if (vt
->is_vector()) {
656 type
= vt
->get_base_type();
662 ir_dereference_record::ir_dereference_record(ir_rvalue
*value
,
665 this->ir_type
= ir_type_dereference_record
;
666 this->record
= value
;
667 this->field
= talloc_strdup(this, field
);
668 this->type
= (this->record
!= NULL
)
669 ? this->record
->type
->field_type(field
) : glsl_type::error_type
;
673 ir_dereference_record::ir_dereference_record(ir_variable
*var
,
676 void *ctx
= talloc_parent(var
);
678 this->ir_type
= ir_type_dereference_record
;
679 this->record
= new(ctx
) ir_dereference_variable(var
);
680 this->field
= talloc_strdup(this, field
);
681 this->type
= (this->record
!= NULL
)
682 ? this->record
->type
->field_type(field
) : glsl_type::error_type
;
687 ir_dereference::is_lvalue()
689 ir_variable
*var
= this->variable_referenced();
691 /* Every l-value derference chain eventually ends in a variable.
693 if ((var
== NULL
) || var
->read_only
)
696 if (this->type
->is_array() && !var
->array_lvalue
)
703 const char *tex_opcode_strs
[] = { "tex", "txb", "txl", "txd", "txf" };
705 const char *ir_texture::opcode_string()
707 assert((unsigned int) op
<=
708 sizeof(tex_opcode_strs
) / sizeof(tex_opcode_strs
[0]));
709 return tex_opcode_strs
[op
];
713 ir_texture::get_opcode(const char *str
)
715 const int count
= sizeof(tex_opcode_strs
) / sizeof(tex_opcode_strs
[0]);
716 for (int op
= 0; op
< count
; op
++) {
717 if (strcmp(str
, tex_opcode_strs
[op
]) == 0)
718 return (ir_texture_opcode
) op
;
720 return (ir_texture_opcode
) -1;
725 ir_texture::set_sampler(ir_dereference
*sampler
)
727 assert(sampler
!= NULL
);
728 this->sampler
= sampler
;
730 switch (sampler
->type
->sampler_type
) {
731 case GLSL_TYPE_FLOAT
:
732 this->type
= glsl_type::vec4_type
;
735 this->type
= glsl_type::ivec4_type
;
738 this->type
= glsl_type::uvec4_type
;
745 ir_swizzle::init_mask(const unsigned *comp
, unsigned count
)
747 assert((count
>= 1) && (count
<= 4));
749 memset(&this->mask
, 0, sizeof(this->mask
));
750 this->mask
.num_components
= count
;
752 unsigned dup_mask
= 0;
755 assert(comp
[3] <= 3);
756 dup_mask
|= (1U << comp
[3])
757 & ((1U << comp
[0]) | (1U << comp
[1]) | (1U << comp
[2]));
758 this->mask
.w
= comp
[3];
761 assert(comp
[2] <= 3);
762 dup_mask
|= (1U << comp
[2])
763 & ((1U << comp
[0]) | (1U << comp
[1]));
764 this->mask
.z
= comp
[2];
767 assert(comp
[1] <= 3);
768 dup_mask
|= (1U << comp
[1])
770 this->mask
.y
= comp
[1];
773 assert(comp
[0] <= 3);
774 this->mask
.x
= comp
[0];
777 this->mask
.has_duplicates
= dup_mask
!= 0;
779 /* Based on the number of elements in the swizzle and the base type
780 * (i.e., float, int, unsigned, or bool) of the vector being swizzled,
781 * generate the type of the resulting value.
783 type
= glsl_type::get_instance(val
->type
->base_type
, mask
.num_components
, 1);
786 ir_swizzle::ir_swizzle(ir_rvalue
*val
, unsigned x
, unsigned y
, unsigned z
,
787 unsigned w
, unsigned count
)
790 const unsigned components
[4] = { x
, y
, z
, w
};
791 this->ir_type
= ir_type_swizzle
;
792 this->init_mask(components
, count
);
795 ir_swizzle::ir_swizzle(ir_rvalue
*val
, const unsigned *comp
,
799 this->ir_type
= ir_type_swizzle
;
800 this->init_mask(comp
, count
);
803 ir_swizzle::ir_swizzle(ir_rvalue
*val
, ir_swizzle_mask mask
)
805 this->ir_type
= ir_type_swizzle
;
808 this->type
= glsl_type::get_instance(val
->type
->base_type
,
809 mask
.num_components
, 1);
818 ir_swizzle::create(ir_rvalue
*val
, const char *str
, unsigned vector_length
)
820 void *ctx
= talloc_parent(val
);
822 /* For each possible swizzle character, this table encodes the value in
823 * \c idx_map that represents the 0th element of the vector. For invalid
824 * swizzle characters (e.g., 'k'), a special value is used that will allow
825 * detection of errors.
827 static const unsigned char base_idx
[26] = {
828 /* a b c d e f g h i j k l m */
829 R
, R
, I
, I
, I
, I
, R
, I
, I
, I
, I
, I
, I
,
830 /* n o p q r s t u v w x y z */
831 I
, I
, S
, S
, R
, S
, S
, I
, I
, X
, X
, X
, X
834 /* Each valid swizzle character has an entry in the previous table. This
835 * table encodes the base index encoded in the previous table plus the actual
836 * index of the swizzle character. When processing swizzles, the first
837 * character in the string is indexed in the previous table. Each character
838 * in the string is indexed in this table, and the value found there has the
839 * value form the first table subtracted. The result must be on the range
842 * For example, the string "wzyx" will get X from the first table. Each of
843 * the charcaters will get X+3, X+2, X+1, and X+0 from this table. After
844 * subtraction, the swizzle values are { 3, 2, 1, 0 }.
846 * The string "wzrg" will get X from the first table. Each of the characters
847 * will get X+3, X+2, R+0, and R+1 from this table. After subtraction, the
848 * swizzle values are { 3, 2, 4, 5 }. Since 4 and 5 are outside the range
849 * [0,3], the error is detected.
851 static const unsigned char idx_map
[26] = {
852 /* a b c d e f g h i j k l m */
853 R
+3, R
+2, 0, 0, 0, 0, R
+1, 0, 0, 0, 0, 0, 0,
854 /* n o p q r s t u v w x y z */
855 0, 0, S
+2, S
+3, R
+0, S
+0, S
+1, 0, 0, X
+3, X
+0, X
+1, X
+2
858 int swiz_idx
[4] = { 0, 0, 0, 0 };
862 /* Validate the first character in the swizzle string and look up the base
863 * index value as described above.
865 if ((str
[0] < 'a') || (str
[0] > 'z'))
868 const unsigned base
= base_idx
[str
[0] - 'a'];
871 for (i
= 0; (i
< 4) && (str
[i
] != '\0'); i
++) {
872 /* Validate the next character, and, as described above, convert it to a
875 if ((str
[i
] < 'a') || (str
[i
] > 'z'))
878 swiz_idx
[i
] = idx_map
[str
[i
] - 'a'] - base
;
879 if ((swiz_idx
[i
] < 0) || (swiz_idx
[i
] >= (int) vector_length
))
886 return new(ctx
) ir_swizzle(val
, swiz_idx
[0], swiz_idx
[1], swiz_idx
[2],
896 ir_swizzle::variable_referenced()
898 return this->val
->variable_referenced();
902 ir_variable::ir_variable(const struct glsl_type
*type
, const char *name
,
903 ir_variable_mode mode
)
904 : max_array_access(0), read_only(false), centroid(false), invariant(false),
905 mode(mode
), interpolation(ir_var_smooth
), array_lvalue(false)
907 this->ir_type
= ir_type_variable
;
909 this->name
= talloc_strdup(this, name
);
911 this->warn_extension
= NULL
;
912 this->constant_value
= NULL
;
913 this->origin_upper_left
= false;
914 this->pixel_center_integer
= false;
916 if (type
&& type
->base_type
== GLSL_TYPE_SAMPLER
)
917 this->read_only
= true;
922 ir_variable::interpolation_string() const
924 switch (this->interpolation
) {
925 case ir_var_smooth
: return "smooth";
926 case ir_var_flat
: return "flat";
927 case ir_var_noperspective
: return "noperspective";
930 assert(!"Should not get here.");
936 ir_variable::component_slots() const
938 /* FINISHME: Sparsely accessed arrays require fewer slots. */
939 return this->type
->component_slots();
943 ir_function_signature::ir_function_signature(const glsl_type
*return_type
)
944 : return_type(return_type
), is_defined(false), _function(NULL
)
946 this->ir_type
= ir_type_function_signature
;
947 this->is_built_in
= false;
952 ir_function_signature::qualifiers_match(exec_list
*params
)
954 exec_list_iterator iter_a
= parameters
.iterator();
955 exec_list_iterator iter_b
= params
->iterator();
957 /* check that the qualifiers match. */
958 while (iter_a
.has_next()) {
959 ir_variable
*a
= (ir_variable
*)iter_a
.get();
960 ir_variable
*b
= (ir_variable
*)iter_b
.get();
962 if (a
->read_only
!= b
->read_only
||
963 a
->mode
!= b
->mode
||
964 a
->interpolation
!= b
->interpolation
||
965 a
->centroid
!= b
->centroid
) {
967 /* parameter a's qualifiers don't match */
979 ir_function_signature::replace_parameters(exec_list
*new_params
)
981 /* Destroy all of the previous parameter information. If the previous
982 * parameter information comes from the function prototype, it may either
983 * specify incorrect parameter names or not have names at all.
985 foreach_iter(exec_list_iterator
, iter
, parameters
) {
986 assert(((ir_instruction
*) iter
.get())->as_variable() != NULL
);
991 new_params
->move_nodes_to(¶meters
);
995 ir_function::ir_function(const char *name
)
997 this->ir_type
= ir_type_function
;
998 this->name
= talloc_strdup(this, name
);
1003 ir_call::get_error_instruction(void *ctx
)
1005 ir_call
*call
= new(ctx
) ir_call
;
1007 call
->type
= glsl_type::error_type
;
1012 ir_call::set_callee(ir_function_signature
*sig
)
1014 assert((this->type
== NULL
) || (this->type
== sig
->return_type
));
1020 visit_exec_list(exec_list
*list
, ir_visitor
*visitor
)
1022 foreach_iter(exec_list_iterator
, iter
, *list
) {
1023 ((ir_instruction
*)iter
.get())->accept(visitor
);
1029 steal_memory(ir_instruction
*ir
, void *new_ctx
)
1031 ir_variable
*var
= ir
->as_variable();
1032 ir_constant
*constant
= ir
->as_constant();
1033 if (var
!= NULL
&& var
->constant_value
!= NULL
)
1034 steal_memory(var
->constant_value
, ir
);
1036 /* The components of aggregate constants are not visited by the normal
1037 * visitor, so steal their values by hand.
1039 if (constant
!= NULL
) {
1040 if (constant
->type
->is_record()) {
1041 foreach_iter(exec_list_iterator
, iter
, constant
->components
) {
1042 ir_constant
*field
= (ir_constant
*)iter
.get();
1043 steal_memory(field
, ir
);
1045 } else if (constant
->type
->is_array()) {
1046 for (unsigned int i
= 0; i
< constant
->type
->length
; i
++) {
1047 steal_memory(constant
->array_elements
[i
], ir
);
1052 talloc_steal(new_ctx
, ir
);
1057 reparent_ir(exec_list
*list
, void *mem_ctx
)
1059 foreach_list(node
, list
) {
1060 visit_tree((ir_instruction
*) node
, steal_memory
, mem_ctx
);