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/imports.h"
26 #include "ir_visitor.h"
27 #include "glsl_types.h"
29 ir_assignment::ir_assignment(ir_rvalue
*lhs
, ir_rvalue
*rhs
,
34 this->condition
= condition
;
38 ir_expression::ir_expression(int op
, const struct glsl_type
*type
,
39 ir_rvalue
*op0
, ir_rvalue
*op1
)
42 this->operation
= ir_expression_operation(op
);
43 this->operands
[0] = op0
;
44 this->operands
[1] = op1
;
48 ir_expression::get_num_operands(ir_expression_operation op
)
50 /* Update ir_print_visitor.cpp when updating this list. */
51 const int num_operands
[] = {
52 1, /* ir_unop_bit_not */
53 1, /* ir_unop_logic_not */
72 1, /* ir_unop_trunc */
74 1, /* ir_unop_floor */
88 2, /* ir_binop_less */
89 2, /* ir_binop_greater */
90 2, /* ir_binop_lequal */
91 2, /* ir_binop_gequal */
92 2, /* ir_binop_equal */
93 2, /* ir_binop_nequal */
95 2, /* ir_binop_lshift */
96 2, /* ir_binop_rshift */
97 2, /* ir_binop_bit_and */
98 2, /* ir_binop_bit_xor */
99 2, /* ir_binop_bit_or */
101 2, /* ir_binop_logic_and */
102 2, /* ir_binop_logic_xor */
103 2, /* ir_binop_logic_or */
105 2, /* ir_binop_dot */
106 2, /* ir_binop_min */
107 2, /* ir_binop_max */
109 2, /* ir_binop_pow */
112 assert(sizeof(num_operands
) / sizeof(num_operands
[0]) == ir_binop_pow
+ 1);
114 return num_operands
[op
];
117 static const char *const operator_strs
[] = {
169 const char *ir_expression::operator_string()
171 assert((unsigned int) operation
<=
172 sizeof(operator_strs
) / sizeof(operator_strs
[0]));
173 return operator_strs
[operation
];
176 ir_expression_operation
177 ir_expression::get_operator(const char *str
)
179 const int operator_count
= sizeof(operator_strs
) / sizeof(operator_strs
[0]);
180 for (int op
= 0; op
< operator_count
; op
++) {
181 if (strcmp(str
, operator_strs
[op
]) == 0)
182 return (ir_expression_operation
) op
;
184 return (ir_expression_operation
) -1;
187 ir_constant::ir_constant()
192 ir_constant::ir_constant(const struct glsl_type
*type
,
193 const ir_constant_data
*data
)
195 assert((type
->base_type
>= GLSL_TYPE_UINT
)
196 && (type
->base_type
<= GLSL_TYPE_BOOL
));
199 memcpy(& this->value
, data
, sizeof(this->value
));
202 ir_constant::ir_constant(float f
)
204 this->type
= glsl_type::float_type
;
205 this->value
.f
[0] = f
;
208 ir_constant::ir_constant(unsigned int u
)
210 this->type
= glsl_type::uint_type
;
211 this->value
.u
[0] = u
;
214 ir_constant::ir_constant(int i
)
216 this->type
= glsl_type::int_type
;
217 this->value
.i
[0] = i
;
220 ir_constant::ir_constant(bool b
)
222 this->type
= glsl_type::bool_type
;
223 this->value
.b
[0] = b
;
226 ir_constant::ir_constant(const ir_constant
*c
, unsigned i
)
228 this->type
= c
->type
->get_base_type();
230 switch (this->type
->base_type
) {
231 case GLSL_TYPE_UINT
: this->value
.u
[0] = c
->value
.u
[i
]; break;
232 case GLSL_TYPE_INT
: this->value
.i
[0] = c
->value
.i
[i
]; break;
233 case GLSL_TYPE_FLOAT
: this->value
.f
[0] = c
->value
.f
[i
]; break;
234 case GLSL_TYPE_BOOL
: this->value
.b
[0] = c
->value
.b
[i
]; break;
235 default: assert(!"Should not get here."); break;
239 ir_constant::ir_constant(const struct glsl_type
*type
, exec_list
*value_list
)
243 /* FINISHME: Support array types. */
244 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
245 || type
->is_record());
247 /* If the constant is a record, the types of each of the entries in
248 * value_list must be a 1-for-1 match with the structure components. Each
249 * entry must also be a constant. Just move the nodes from the value_list
250 * to the list in the ir_constant.
252 /* FINISHME: Should there be some type checking and / or assertions here? */
253 /* FINISHME: Should the new constant take ownership of the nodes from
254 * FINISHME: value_list, or should it make copies?
256 if (type
->is_record()) {
257 value_list
->move_nodes_to(& this->components
);
262 ir_constant
*value
= (ir_constant
*) (value_list
->head
);
264 /* Use each component from each entry in the value_list to initialize one
265 * component of the constant being constructed.
267 for (unsigned i
= 0; i
< type
->components(); /* empty */) {
268 assert(value
->as_constant() != NULL
);
269 assert(!value
->is_tail_sentinal());
271 for (unsigned j
= 0; j
< value
->type
->components(); j
++) {
272 switch (type
->base_type
) {
274 this->value
.u
[i
] = value
->get_uint_component(j
);
277 this->value
.i
[i
] = value
->get_int_component(j
);
279 case GLSL_TYPE_FLOAT
:
280 this->value
.f
[i
] = value
->get_float_component(j
);
283 this->value
.b
[i
] = value
->get_bool_component(j
);
286 /* FINISHME: What to do? Exceptions are not the answer.
292 if (i
>= type
->components())
296 value
= (ir_constant
*) value
->next
;
301 ir_constant::get_bool_component(unsigned i
) const
303 switch (this->type
->base_type
) {
304 case GLSL_TYPE_UINT
: return this->value
.u
[i
] != 0;
305 case GLSL_TYPE_INT
: return this->value
.i
[i
] != 0;
306 case GLSL_TYPE_FLOAT
: return ((int)this->value
.f
[i
]) != 0;
307 case GLSL_TYPE_BOOL
: return this->value
.b
[i
];
308 default: assert(!"Should not get here."); break;
311 /* Must return something to make the compiler happy. This is clearly an
318 ir_constant::get_float_component(unsigned i
) const
320 switch (this->type
->base_type
) {
321 case GLSL_TYPE_UINT
: return (float) this->value
.u
[i
];
322 case GLSL_TYPE_INT
: return (float) this->value
.i
[i
];
323 case GLSL_TYPE_FLOAT
: return this->value
.f
[i
];
324 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0 : 0.0;
325 default: assert(!"Should not get here."); break;
328 /* Must return something to make the compiler happy. This is clearly an
335 ir_constant::get_int_component(unsigned i
) const
337 switch (this->type
->base_type
) {
338 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
339 case GLSL_TYPE_INT
: return this->value
.i
[i
];
340 case GLSL_TYPE_FLOAT
: return (int) this->value
.f
[i
];
341 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
342 default: assert(!"Should not get here."); break;
345 /* Must return something to make the compiler happy. This is clearly an
352 ir_constant::get_uint_component(unsigned i
) const
354 switch (this->type
->base_type
) {
355 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
356 case GLSL_TYPE_INT
: return this->value
.i
[i
];
357 case GLSL_TYPE_FLOAT
: return (unsigned) this->value
.f
[i
];
358 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
359 default: assert(!"Should not get here."); break;
362 /* Must return something to make the compiler happy. This is clearly an
370 ir_constant::get_record_field(const char *name
)
372 int idx
= this->type
->field_index(name
);
377 if (this->components
.is_empty())
380 exec_node
*node
= this->components
.head
;
381 for (int i
= 0; i
< idx
; i
++) {
384 /* If the end of the list is encountered before the element matching the
385 * requested field is found, return NULL.
387 if (node
->is_tail_sentinal())
391 return (ir_constant
*) node
;
396 ir_constant::has_value(const ir_constant
*c
) const
398 if (this->type
!= c
->type
)
401 /* FINISHME: This will probably also handle constant arrays as soon as those
402 * FINISHME: are supported.
404 if (this->type
->base_type
== GLSL_TYPE_STRUCT
) {
405 const exec_node
*a_node
= this->components
.head
;
406 const exec_node
*b_node
= c
->components
.head
;
408 while (!a_node
->is_tail_sentinal()) {
409 assert(!b_node
->is_tail_sentinal());
411 const ir_constant
*const a_field
= (ir_constant
*) a_node
;
412 const ir_constant
*const b_field
= (ir_constant
*) b_node
;
414 if (!a_field
->has_value(b_field
))
417 a_node
= a_node
->next
;
418 b_node
= b_node
->next
;
424 for (unsigned i
= 0; i
< this->type
->components(); i
++) {
425 switch (this->type
->base_type
) {
427 if (this->value
.u
[i
] != c
->value
.u
[i
])
431 if (this->value
.i
[i
] != c
->value
.i
[i
])
434 case GLSL_TYPE_FLOAT
:
435 if (this->value
.f
[i
] != c
->value
.f
[i
])
439 if (this->value
.b
[i
] != c
->value
.b
[i
])
443 assert(!"Should not get here.");
451 ir_dereference_variable::ir_dereference_variable(ir_variable
*var
)
454 this->type
= (var
!= NULL
) ? var
->type
: glsl_type::error_type
;
458 ir_dereference_array::ir_dereference_array(ir_rvalue
*value
,
459 ir_rvalue
*array_index
)
461 this->array_index
= array_index
;
462 this->set_array(value
);
466 ir_dereference_array::ir_dereference_array(ir_variable
*var
,
467 ir_rvalue
*array_index
)
469 void *ctx
= talloc_parent(var
);
471 this->array_index
= array_index
;
472 this->set_array(new(ctx
) ir_dereference_variable(var
));
477 ir_dereference_array::set_array(ir_rvalue
*value
)
480 this->type
= glsl_type::error_type
;
482 if (this->array
!= NULL
) {
483 const glsl_type
*const vt
= this->array
->type
;
485 if (vt
->is_array()) {
486 type
= vt
->element_type();
487 } else if (vt
->is_matrix()) {
488 type
= vt
->column_type();
489 } else if (vt
->is_vector()) {
490 type
= vt
->get_base_type();
496 ir_dereference_record::ir_dereference_record(ir_rvalue
*value
,
499 this->record
= value
;
501 this->type
= (this->record
!= NULL
)
502 ? this->record
->type
->field_type(field
) : glsl_type::error_type
;
506 ir_dereference_record::ir_dereference_record(ir_variable
*var
,
509 void *ctx
= talloc_parent(var
);
511 this->record
= new(ctx
) ir_dereference_variable(var
);
513 this->type
= (this->record
!= NULL
)
514 ? this->record
->type
->field_type(field
) : glsl_type::error_type
;
519 ir_dereference::is_lvalue()
521 ir_variable
*var
= this->variable_referenced();
523 /* Every l-value derference chain eventually ends in a variable.
525 if ((var
== NULL
) || var
->read_only
)
528 if (this->type
->is_array() && !var
->array_lvalue
)
535 const char *tex_opcode_strs
[] = { "tex", "txb", "txl", "txd", "txf" };
537 const char *ir_texture::opcode_string()
539 assert((unsigned int) op
<=
540 sizeof(tex_opcode_strs
) / sizeof(tex_opcode_strs
[0]));
541 return tex_opcode_strs
[op
];
545 ir_texture::get_opcode(const char *str
)
547 const int count
= sizeof(tex_opcode_strs
) / sizeof(tex_opcode_strs
[0]);
548 for (int op
= 0; op
< count
; op
++) {
549 if (strcmp(str
, tex_opcode_strs
[op
]) == 0)
550 return (ir_texture_opcode
) op
;
552 return (ir_texture_opcode
) -1;
557 ir_texture::set_sampler(ir_dereference
*sampler
)
559 assert(sampler
!= NULL
);
560 this->sampler
= sampler
;
562 switch (sampler
->type
->sampler_type
) {
563 case GLSL_TYPE_FLOAT
:
564 this->type
= glsl_type::vec4_type
;
567 this->type
= glsl_type::ivec4_type
;
570 this->type
= glsl_type::uvec4_type
;
576 ir_swizzle::ir_swizzle(ir_rvalue
*val
, unsigned x
, unsigned y
, unsigned z
,
577 unsigned w
, unsigned count
)
580 assert((count
>= 1) && (count
<= 4));
582 const unsigned dup_mask
= 0
583 | ((count
> 1) ? ((1U << y
) & ((1U << x
) )) : 0)
584 | ((count
> 2) ? ((1U << z
) & ((1U << x
) | (1U << y
) )) : 0)
585 | ((count
> 3) ? ((1U << w
) & ((1U << x
) | (1U << y
) | (1U << z
))) : 0);
596 mask
.num_components
= count
;
597 mask
.has_duplicates
= dup_mask
!= 0;
599 /* Based on the number of elements in the swizzle and the base type
600 * (i.e., float, int, unsigned, or bool) of the vector being swizzled,
601 * generate the type of the resulting value.
603 type
= glsl_type::get_instance(val
->type
->base_type
, mask
.num_components
, 1);
606 ir_swizzle::ir_swizzle(ir_rvalue
*val
, ir_swizzle_mask mask
)
610 this->type
= glsl_type::get_instance(val
->type
->base_type
,
611 mask
.num_components
, 1);
620 ir_swizzle::create(ir_rvalue
*val
, const char *str
, unsigned vector_length
)
622 void *ctx
= talloc_parent(val
);
624 /* For each possible swizzle character, this table encodes the value in
625 * \c idx_map that represents the 0th element of the vector. For invalid
626 * swizzle characters (e.g., 'k'), a special value is used that will allow
627 * detection of errors.
629 static const unsigned char base_idx
[26] = {
630 /* a b c d e f g h i j k l m */
631 R
, R
, I
, I
, I
, I
, R
, I
, I
, I
, I
, I
, I
,
632 /* n o p q r s t u v w x y z */
633 I
, I
, S
, S
, R
, S
, S
, I
, I
, X
, X
, X
, X
636 /* Each valid swizzle character has an entry in the previous table. This
637 * table encodes the base index encoded in the previous table plus the actual
638 * index of the swizzle character. When processing swizzles, the first
639 * character in the string is indexed in the previous table. Each character
640 * in the string is indexed in this table, and the value found there has the
641 * value form the first table subtracted. The result must be on the range
644 * For example, the string "wzyx" will get X from the first table. Each of
645 * the charcaters will get X+3, X+2, X+1, and X+0 from this table. After
646 * subtraction, the swizzle values are { 3, 2, 1, 0 }.
648 * The string "wzrg" will get X from the first table. Each of the characters
649 * will get X+3, X+2, R+0, and R+1 from this table. After subtraction, the
650 * swizzle values are { 3, 2, 4, 5 }. Since 4 and 5 are outside the range
651 * [0,3], the error is detected.
653 static const unsigned char idx_map
[26] = {
654 /* a b c d e f g h i j k l m */
655 R
+3, R
+2, 0, 0, 0, 0, R
+1, 0, 0, 0, 0, 0, 0,
656 /* n o p q r s t u v w x y z */
657 0, 0, S
+2, S
+3, R
+0, S
+0, S
+1, 0, 0, X
+3, X
+0, X
+1, X
+2
660 int swiz_idx
[4] = { 0, 0, 0, 0 };
664 /* Validate the first character in the swizzle string and look up the base
665 * index value as described above.
667 if ((str
[0] < 'a') || (str
[0] > 'z'))
670 const unsigned base
= base_idx
[str
[0] - 'a'];
673 for (i
= 0; (i
< 4) && (str
[i
] != '\0'); i
++) {
674 /* Validate the next character, and, as described above, convert it to a
677 if ((str
[i
] < 'a') || (str
[i
] > 'z'))
680 swiz_idx
[i
] = idx_map
[str
[i
] - 'a'] - base
;
681 if ((swiz_idx
[i
] < 0) || (swiz_idx
[i
] >= (int) vector_length
))
688 return new(ctx
) ir_swizzle(val
, swiz_idx
[0], swiz_idx
[1], swiz_idx
[2],
698 ir_swizzle::variable_referenced()
700 return this->val
->variable_referenced();
703 ir_variable::ir_variable(const struct glsl_type
*type
, const char *name
)
704 : max_array_access(0), read_only(false), centroid(false), invariant(false),
705 shader_in(false), shader_out(false),
706 mode(ir_var_auto
), interpolation(ir_var_smooth
), array_lvalue(false)
711 this->warn_extension
= NULL
;
712 this->constant_value
= NULL
;
714 if (type
&& type
->base_type
== GLSL_TYPE_SAMPLER
)
715 this->read_only
= true;
720 ir_variable::interpolation_string() const
722 if (!this->shader_in
&& !this->shader_out
)
725 switch (this->interpolation
) {
726 case ir_var_smooth
: return "smooth";
727 case ir_var_flat
: return "flat";
728 case ir_var_noperspective
: return "noperspective";
731 assert(!"Should not get here.");
737 ir_variable::component_slots() const
739 /* FINISHME: Sparsely accessed arrays require fewer slots. */
740 return this->type
->component_slots();
744 ir_function_signature::ir_function_signature(const glsl_type
*return_type
)
745 : return_type(return_type
), is_defined(false)
752 ir_function_signature::qualifiers_match(exec_list
*params
)
754 exec_list_iterator iter_a
= parameters
.iterator();
755 exec_list_iterator iter_b
= params
->iterator();
757 /* check that the qualifiers match. */
758 while (iter_a
.has_next()) {
759 ir_variable
*a
= (ir_variable
*)iter_a
.get();
760 ir_variable
*b
= (ir_variable
*)iter_b
.get();
762 if (a
->read_only
!= b
->read_only
||
763 a
->mode
!= b
->mode
||
764 a
->interpolation
!= b
->interpolation
||
765 a
->centroid
!= b
->centroid
) {
767 /* parameter a's qualifiers don't match */
779 ir_function_signature::replace_parameters(exec_list
*new_params
)
781 /* Destroy all of the previous parameter information. If the previous
782 * parameter information comes from the function prototype, it may either
783 * specify incorrect parameter names or not have names at all.
785 foreach_iter(exec_list_iterator
, iter
, parameters
) {
786 assert(((ir_instruction
*) iter
.get())->as_variable() != NULL
);
791 new_params
->move_nodes_to(¶meters
);
795 ir_function::ir_function(const char *name
)
803 ir_call::get_error_instruction(void *ctx
)
805 ir_call
*call
= new(ctx
) ir_call
;
807 call
->type
= glsl_type::error_type
;
812 visit_exec_list(exec_list
*list
, ir_visitor
*visitor
)
814 foreach_iter(exec_list_iterator
, iter
, *list
) {
815 ((ir_instruction
*)iter
.get())->accept(visitor
);