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25 * \file ir_constant_expression.cpp
26 * Evaluate and process constant valued expressions
28 * In GLSL, constant valued expressions are used in several places. These
29 * must be processed and evaluated very early in the compilation process.
32 * * Initializers for uniforms
33 * * Initializers for \c const variables
37 #include "main/macros.h"
39 #include "ir_visitor.h"
40 #include "glsl_types.h"
43 dot(ir_constant
*op0
, ir_constant
*op1
)
45 assert(op0
->type
->is_float() && op1
->type
->is_float());
48 for (unsigned c
= 0; c
< op0
->type
->components(); c
++)
49 result
+= op0
->value
.f
[c
] * op1
->value
.f
[c
];
55 ir_expression::constant_expression_value()
57 ir_constant
*op
[2] = { NULL
, NULL
};
58 ir_constant_data data
;
60 memset(&data
, 0, sizeof(data
));
62 for (unsigned operand
= 0; operand
< this->get_num_operands(); operand
++) {
63 op
[operand
] = this->operands
[operand
]->constant_expression_value();
69 assert(op
[0]->type
->base_type
== op
[1]->type
->base_type
);
71 bool op0_scalar
= op
[0]->type
->is_scalar();
72 bool op1_scalar
= op
[1] != NULL
&& op
[1]->type
->is_scalar();
74 /* When iterating over a vector or matrix's components, we want to increase
75 * the loop counter. However, for scalars, we want to stay at 0.
77 unsigned c0_inc
= op0_scalar
? 0 : 1;
78 unsigned c1_inc
= op1_scalar
? 0 : 1;
80 if (op1_scalar
|| !op
[1]) {
81 components
= op
[0]->type
->components();
83 components
= op
[1]->type
->components();
86 void *ctx
= talloc_parent(this);
88 /* Handle array operations here, rather than below. */
89 if (op
[0]->type
->is_array()) {
90 assert(op
[1] != NULL
&& op
[1]->type
->is_array());
91 switch (this->operation
) {
93 return new(ctx
) ir_constant(op
[0]->has_value(op
[1]));
95 return new(ctx
) ir_constant(!op
[0]->has_value(op
[1]));
102 switch (this->operation
) {
103 case ir_unop_logic_not
:
104 assert(op
[0]->type
->base_type
== GLSL_TYPE_BOOL
);
105 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++)
106 data
.b
[c
] = !op
[0]->value
.b
[c
];
110 assert(op
[0]->type
->base_type
== GLSL_TYPE_FLOAT
);
111 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
112 data
.i
[c
] = op
[0]->value
.f
[c
];
116 assert(op
[0]->type
->base_type
== GLSL_TYPE_INT
);
117 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
118 data
.f
[c
] = op
[0]->value
.i
[c
];
122 assert(op
[0]->type
->base_type
== GLSL_TYPE_UINT
);
123 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
124 data
.f
[c
] = op
[0]->value
.u
[c
];
128 assert(op
[0]->type
->base_type
== GLSL_TYPE_BOOL
);
129 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
130 data
.f
[c
] = op
[0]->value
.b
[c
] ? 1.0 : 0.0;
134 assert(op
[0]->type
->base_type
== GLSL_TYPE_FLOAT
);
135 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
136 data
.b
[c
] = bool(op
[0]->value
.f
[c
]);
140 assert(op
[0]->type
->base_type
== GLSL_TYPE_BOOL
);
141 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
142 data
.u
[c
] = op
[0]->value
.b
[c
] ? 1 : 0;
146 assert(op
[0]->type
->is_integer());
147 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
148 data
.b
[c
] = bool(op
[0]->value
.u
[c
]);
153 assert(op
[0]->type
->base_type
== GLSL_TYPE_FLOAT
);
154 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
155 data
.f
[c
] = truncf(op
[0]->value
.f
[c
]);
160 assert(op
[0]->type
->base_type
== GLSL_TYPE_FLOAT
);
161 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
162 data
.f
[c
] = ceilf(op
[0]->value
.f
[c
]);
167 assert(op
[0]->type
->base_type
== GLSL_TYPE_FLOAT
);
168 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
169 data
.f
[c
] = floorf(op
[0]->value
.f
[c
]);
174 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
175 switch (this->type
->base_type
) {
182 case GLSL_TYPE_FLOAT
:
183 data
.f
[c
] = op
[0]->value
.f
[c
] - floor(op
[0]->value
.f
[c
]);
192 assert(op
[0]->type
->base_type
== GLSL_TYPE_FLOAT
);
193 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
194 data
.f
[c
] = sinf(op
[0]->value
.f
[c
]);
199 assert(op
[0]->type
->base_type
== GLSL_TYPE_FLOAT
);
200 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
201 data
.f
[c
] = cosf(op
[0]->value
.f
[c
]);
206 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
207 switch (this->type
->base_type
) {
209 data
.u
[c
] = -op
[0]->value
.u
[c
];
212 data
.i
[c
] = -op
[0]->value
.i
[c
];
214 case GLSL_TYPE_FLOAT
:
215 data
.f
[c
] = -op
[0]->value
.f
[c
];
224 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
225 switch (this->type
->base_type
) {
227 data
.u
[c
] = op
[0]->value
.u
[c
];
230 data
.i
[c
] = op
[0]->value
.i
[c
];
232 data
.i
[c
] = -data
.i
[c
];
234 case GLSL_TYPE_FLOAT
:
235 data
.f
[c
] = fabs(op
[0]->value
.f
[c
]);
244 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
245 switch (this->type
->base_type
) {
247 data
.u
[c
] = op
[0]->value
.i
[c
] > 0;
250 data
.i
[c
] = (op
[0]->value
.i
[c
] > 0) - (op
[0]->value
.i
[c
] < 0);
252 case GLSL_TYPE_FLOAT
:
253 data
.f
[c
] = float((op
[0]->value
.f
[c
] > 0)-(op
[0]->value
.f
[c
] < 0));
262 assert(op
[0]->type
->base_type
== GLSL_TYPE_FLOAT
);
263 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
264 switch (this->type
->base_type
) {
266 if (op
[0]->value
.u
[c
] != 0.0)
267 data
.u
[c
] = 1 / op
[0]->value
.u
[c
];
270 if (op
[0]->value
.i
[c
] != 0.0)
271 data
.i
[c
] = 1 / op
[0]->value
.i
[c
];
273 case GLSL_TYPE_FLOAT
:
274 if (op
[0]->value
.f
[c
] != 0.0)
275 data
.f
[c
] = 1.0 / op
[0]->value
.f
[c
];
284 assert(op
[0]->type
->base_type
== GLSL_TYPE_FLOAT
);
285 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
286 data
.f
[c
] = 1.0 / sqrtf(op
[0]->value
.f
[c
]);
291 assert(op
[0]->type
->base_type
== GLSL_TYPE_FLOAT
);
292 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
293 data
.f
[c
] = sqrtf(op
[0]->value
.f
[c
]);
298 assert(op
[0]->type
->base_type
== GLSL_TYPE_FLOAT
);
299 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
300 data
.f
[c
] = expf(op
[0]->value
.f
[c
]);
305 assert(op
[0]->type
->base_type
== GLSL_TYPE_FLOAT
);
306 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
307 data
.f
[c
] = exp2f(op
[0]->value
.f
[c
]);
312 assert(op
[0]->type
->base_type
== GLSL_TYPE_FLOAT
);
313 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
314 data
.f
[c
] = logf(op
[0]->value
.f
[c
]);
319 assert(op
[0]->type
->base_type
== GLSL_TYPE_FLOAT
);
320 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
321 data
.f
[c
] = log2f(op
[0]->value
.f
[c
]);
327 assert(op
[0]->type
->base_type
== GLSL_TYPE_FLOAT
);
328 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
334 assert(op
[0]->type
->base_type
== GLSL_TYPE_FLOAT
);
335 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
336 data
.f
[c
] = powf(op
[0]->value
.f
[c
], op
[1]->value
.f
[c
]);
341 data
.f
[0] = dot(op
[0], op
[1]);
345 assert(op
[0]->type
== op
[1]->type
|| op0_scalar
|| op1_scalar
);
346 for (unsigned c
= 0, c0
= 0, c1
= 0;
348 c0
+= c0_inc
, c1
+= c1_inc
, c
++) {
350 switch (op
[0]->type
->base_type
) {
352 data
.u
[c
] = MIN2(op
[0]->value
.u
[c0
], op
[1]->value
.u
[c1
]);
355 data
.i
[c
] = MIN2(op
[0]->value
.i
[c0
], op
[1]->value
.i
[c1
]);
357 case GLSL_TYPE_FLOAT
:
358 data
.f
[c
] = MIN2(op
[0]->value
.f
[c0
], op
[1]->value
.f
[c1
]);
367 assert(op
[0]->type
== op
[1]->type
|| op0_scalar
|| op1_scalar
);
368 for (unsigned c
= 0, c0
= 0, c1
= 0;
370 c0
+= c0_inc
, c1
+= c1_inc
, c
++) {
372 switch (op
[0]->type
->base_type
) {
374 data
.u
[c
] = MAX2(op
[0]->value
.u
[c0
], op
[1]->value
.u
[c1
]);
377 data
.i
[c
] = MAX2(op
[0]->value
.i
[c0
], op
[1]->value
.i
[c1
]);
379 case GLSL_TYPE_FLOAT
:
380 data
.f
[c
] = MAX2(op
[0]->value
.f
[c0
], op
[1]->value
.f
[c1
]);
389 assert(op
[0]->type
== glsl_type::vec3_type
);
390 assert(op
[1]->type
== glsl_type::vec3_type
);
391 data
.f
[0] = (op
[0]->value
.f
[1] * op
[1]->value
.f
[2] -
392 op
[1]->value
.f
[1] * op
[0]->value
.f
[2]);
393 data
.f
[1] = (op
[0]->value
.f
[2] * op
[1]->value
.f
[0] -
394 op
[1]->value
.f
[2] * op
[0]->value
.f
[0]);
395 data
.f
[2] = (op
[0]->value
.f
[0] * op
[1]->value
.f
[1] -
396 op
[1]->value
.f
[0] * op
[0]->value
.f
[1]);
400 assert(op
[0]->type
== op
[1]->type
|| op0_scalar
|| op1_scalar
);
401 for (unsigned c
= 0, c0
= 0, c1
= 0;
403 c0
+= c0_inc
, c1
+= c1_inc
, c
++) {
405 switch (op
[0]->type
->base_type
) {
407 data
.u
[c
] = op
[0]->value
.u
[c0
] + op
[1]->value
.u
[c1
];
410 data
.i
[c
] = op
[0]->value
.i
[c0
] + op
[1]->value
.i
[c1
];
412 case GLSL_TYPE_FLOAT
:
413 data
.f
[c
] = op
[0]->value
.f
[c0
] + op
[1]->value
.f
[c1
];
422 assert(op
[0]->type
== op
[1]->type
|| op0_scalar
|| op1_scalar
);
423 for (unsigned c
= 0, c0
= 0, c1
= 0;
425 c0
+= c0_inc
, c1
+= c1_inc
, c
++) {
427 switch (op
[0]->type
->base_type
) {
429 data
.u
[c
] = op
[0]->value
.u
[c0
] - op
[1]->value
.u
[c1
];
432 data
.i
[c
] = op
[0]->value
.i
[c0
] - op
[1]->value
.i
[c1
];
434 case GLSL_TYPE_FLOAT
:
435 data
.f
[c
] = op
[0]->value
.f
[c0
] - op
[1]->value
.f
[c1
];
444 /* Check for equal types, or unequal types involving scalars */
445 if ((op
[0]->type
== op
[1]->type
&& !op
[0]->type
->is_matrix())
446 || op0_scalar
|| op1_scalar
) {
447 for (unsigned c
= 0, c0
= 0, c1
= 0;
449 c0
+= c0_inc
, c1
+= c1_inc
, c
++) {
451 switch (op
[0]->type
->base_type
) {
453 data
.u
[c
] = op
[0]->value
.u
[c0
] * op
[1]->value
.u
[c1
];
456 data
.i
[c
] = op
[0]->value
.i
[c0
] * op
[1]->value
.i
[c1
];
458 case GLSL_TYPE_FLOAT
:
459 data
.f
[c
] = op
[0]->value
.f
[c0
] * op
[1]->value
.f
[c1
];
466 assert(op
[0]->type
->is_matrix() || op
[1]->type
->is_matrix());
468 /* Multiply an N-by-M matrix with an M-by-P matrix. Since either
469 * matrix can be a GLSL vector, either N or P can be 1.
471 * For vec*mat, the vector is treated as a row vector. This
472 * means the vector is a 1-row x M-column matrix.
474 * For mat*vec, the vector is treated as a column vector. Since
475 * matrix_columns is 1 for vectors, this just works.
477 const unsigned n
= op
[0]->type
->is_vector()
478 ? 1 : op
[0]->type
->vector_elements
;
479 const unsigned m
= op
[1]->type
->vector_elements
;
480 const unsigned p
= op
[1]->type
->matrix_columns
;
481 for (unsigned j
= 0; j
< p
; j
++) {
482 for (unsigned i
= 0; i
< n
; i
++) {
483 for (unsigned k
= 0; k
< m
; k
++) {
484 data
.f
[i
+n
*j
] += op
[0]->value
.f
[i
+n
*k
]*op
[1]->value
.f
[k
+m
*j
];
492 assert(op
[0]->type
== op
[1]->type
|| op0_scalar
|| op1_scalar
);
493 for (unsigned c
= 0, c0
= 0, c1
= 0;
495 c0
+= c0_inc
, c1
+= c1_inc
, c
++) {
497 switch (op
[0]->type
->base_type
) {
499 data
.u
[c
] = op
[0]->value
.u
[c0
] / op
[1]->value
.u
[c1
];
502 data
.i
[c
] = op
[0]->value
.i
[c0
] / op
[1]->value
.i
[c1
];
504 case GLSL_TYPE_FLOAT
:
505 data
.f
[c
] = op
[0]->value
.f
[c0
] / op
[1]->value
.f
[c1
];
514 assert(op
[0]->type
== op
[1]->type
|| op0_scalar
|| op1_scalar
);
515 for (unsigned c
= 0, c0
= 0, c1
= 0;
517 c0
+= c0_inc
, c1
+= c1_inc
, c
++) {
519 switch (op
[0]->type
->base_type
) {
521 data
.u
[c
] = op
[0]->value
.u
[c0
] % op
[1]->value
.u
[c1
];
524 data
.i
[c
] = op
[0]->value
.i
[c0
] % op
[1]->value
.i
[c1
];
526 case GLSL_TYPE_FLOAT
:
527 /* We don't use fmod because it rounds toward zero; GLSL specifies
530 data
.f
[c
] = op
[0]->value
.f
[c0
] - op
[1]->value
.f
[c1
]
531 * floorf(op
[0]->value
.f
[c0
] / op
[1]->value
.f
[c1
]);
540 case ir_binop_logic_and
:
541 assert(op
[0]->type
->base_type
== GLSL_TYPE_BOOL
);
542 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++)
543 data
.b
[c
] = op
[0]->value
.b
[c
] && op
[1]->value
.b
[c
];
545 case ir_binop_logic_xor
:
546 assert(op
[0]->type
->base_type
== GLSL_TYPE_BOOL
);
547 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++)
548 data
.b
[c
] = op
[0]->value
.b
[c
] ^ op
[1]->value
.b
[c
];
550 case ir_binop_logic_or
:
551 assert(op
[0]->type
->base_type
== GLSL_TYPE_BOOL
);
552 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++)
553 data
.b
[c
] = op
[0]->value
.b
[c
] || op
[1]->value
.b
[c
];
557 switch (op
[0]->type
->base_type
) {
559 data
.b
[0] = op
[0]->value
.u
[0] < op
[1]->value
.u
[0];
562 data
.b
[0] = op
[0]->value
.i
[0] < op
[1]->value
.i
[0];
564 case GLSL_TYPE_FLOAT
:
565 data
.b
[0] = op
[0]->value
.f
[0] < op
[1]->value
.f
[0];
571 case ir_binop_greater
:
572 switch (op
[0]->type
->base_type
) {
574 data
.b
[0] = op
[0]->value
.u
[0] > op
[1]->value
.u
[0];
577 data
.b
[0] = op
[0]->value
.i
[0] > op
[1]->value
.i
[0];
579 case GLSL_TYPE_FLOAT
:
580 data
.b
[0] = op
[0]->value
.f
[0] > op
[1]->value
.f
[0];
586 case ir_binop_lequal
:
587 switch (op
[0]->type
->base_type
) {
589 data
.b
[0] = op
[0]->value
.u
[0] <= op
[1]->value
.u
[0];
592 data
.b
[0] = op
[0]->value
.i
[0] <= op
[1]->value
.i
[0];
594 case GLSL_TYPE_FLOAT
:
595 data
.b
[0] = op
[0]->value
.f
[0] <= op
[1]->value
.f
[0];
601 case ir_binop_gequal
:
602 switch (op
[0]->type
->base_type
) {
604 data
.b
[0] = op
[0]->value
.u
[0] >= op
[1]->value
.u
[0];
607 data
.b
[0] = op
[0]->value
.i
[0] >= op
[1]->value
.i
[0];
609 case GLSL_TYPE_FLOAT
:
610 data
.b
[0] = op
[0]->value
.f
[0] >= op
[1]->value
.f
[0];
618 data
.b
[0] = op
[0]->has_value(op
[1]);
620 case ir_binop_nequal
:
621 data
.b
[0] = !op
[0]->has_value(op
[1]);
625 /* FINISHME: Should handle all expression types. */
629 return new(ctx
) ir_constant(this->type
, &data
);
634 ir_texture::constant_expression_value()
636 /* texture lookups aren't constant expressions */
642 ir_swizzle::constant_expression_value()
644 ir_constant
*v
= this->val
->constant_expression_value();
647 ir_constant_data data
;
649 const unsigned swiz_idx
[4] = {
650 this->mask
.x
, this->mask
.y
, this->mask
.z
, this->mask
.w
653 for (unsigned i
= 0; i
< this->mask
.num_components
; i
++) {
654 switch (v
->type
->base_type
) {
656 case GLSL_TYPE_INT
: data
.u
[i
] = v
->value
.u
[swiz_idx
[i
]]; break;
657 case GLSL_TYPE_FLOAT
: data
.f
[i
] = v
->value
.f
[swiz_idx
[i
]]; break;
658 case GLSL_TYPE_BOOL
: data
.b
[i
] = v
->value
.b
[swiz_idx
[i
]]; break;
659 default: assert(!"Should not get here."); break;
663 void *ctx
= talloc_parent(this);
664 return new(ctx
) ir_constant(this->type
, &data
);
671 ir_dereference_variable::constant_expression_value()
673 /* This may occur during compile and var->type is glsl_type::error_type */
677 return var
->constant_value
? var
->constant_value
->clone(NULL
) : NULL
;
682 ir_dereference_array::constant_expression_value()
684 void *ctx
= talloc_parent(this);
685 ir_constant
*array
= this->array
->constant_expression_value();
686 ir_constant
*idx
= this->array_index
->constant_expression_value();
688 if ((array
!= NULL
) && (idx
!= NULL
)) {
689 if (array
->type
->is_matrix()) {
690 /* Array access of a matrix results in a vector.
692 const unsigned column
= idx
->value
.u
[0];
694 const glsl_type
*const column_type
= array
->type
->column_type();
696 /* Offset in the constant matrix to the first element of the column
699 const unsigned mat_idx
= column
* column_type
->vector_elements
;
701 ir_constant_data data
;
703 switch (column_type
->base_type
) {
706 for (unsigned i
= 0; i
< column_type
->vector_elements
; i
++)
707 data
.u
[i
] = array
->value
.u
[mat_idx
+ i
];
711 case GLSL_TYPE_FLOAT
:
712 for (unsigned i
= 0; i
< column_type
->vector_elements
; i
++)
713 data
.f
[i
] = array
->value
.f
[mat_idx
+ i
];
718 assert(!"Should not get here.");
722 return new(ctx
) ir_constant(column_type
, &data
);
723 } else if (array
->type
->is_vector()) {
724 const unsigned component
= idx
->value
.u
[0];
726 return new(ctx
) ir_constant(array
, component
);
728 const unsigned index
= idx
->value
.u
[0];
729 return array
->get_array_element(index
)->clone(NULL
);
737 ir_dereference_record::constant_expression_value()
739 ir_constant
*v
= this->record
->constant_expression_value();
741 return (v
!= NULL
) ? v
->get_record_field(this->field
) : NULL
;
746 ir_assignment::constant_expression_value()
748 /* FINISHME: Handle CEs involving assignment (return RHS) */
754 ir_constant::constant_expression_value()
761 ir_call::constant_expression_value()
763 if (this->type
== glsl_type::error_type
)
766 /* From the GLSL 1.20 spec, page 23:
767 * "Function calls to user-defined functions (non-built-in functions)
768 * cannot be used to form constant expressions."
770 if (!this->callee
->is_built_in
)
773 unsigned num_parameters
= 0;
775 /* Check if all parameters are constant */
777 foreach_list(n
, &this->actual_parameters
) {
778 ir_constant
*constant
= ((ir_rvalue
*) n
)->constant_expression_value();
779 if (constant
== NULL
)
782 op
[num_parameters
] = constant
;
784 assert(num_parameters
< 3);
788 /* Individual cases below can either:
789 * - Assign "expr" a new ir_expression to evaluate (for basic opcodes)
790 * - Fill "data" with appopriate constant data
791 * - Return an ir_constant directly.
793 void *mem_ctx
= talloc_parent(this);
794 ir_expression
*expr
= NULL
;
796 ir_constant_data data
;
797 memset(&data
, 0, sizeof(data
));
799 const char *callee
= this->callee_name();
800 if (strcmp(callee
, "abs") == 0) {
801 expr
= new(mem_ctx
) ir_expression(ir_unop_abs
, type
, op
[0], NULL
);
802 } else if (strcmp(callee
, "all") == 0) {
803 assert(op
[0]->type
->is_boolean());
804 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
805 if (!op
[0]->value
.b
[c
])
806 return new(mem_ctx
) ir_constant(false);
808 return new(mem_ctx
) ir_constant(true);
809 } else if (strcmp(callee
, "any") == 0) {
810 assert(op
[0]->type
->is_boolean());
811 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
812 if (op
[0]->value
.b
[c
])
813 return new(mem_ctx
) ir_constant(true);
815 return new(mem_ctx
) ir_constant(false);
816 } else if (strcmp(callee
, "acos") == 0) {
817 assert(op
[0]->type
->is_float());
818 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++)
819 data
.f
[c
] = acosf(op
[0]->value
.f
[c
]);
820 } else if (strcmp(callee
, "asin") == 0) {
821 assert(op
[0]->type
->is_float());
822 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++)
823 data
.f
[c
] = asinf(op
[0]->value
.f
[c
]);
824 } else if (strcmp(callee
, "atan") == 0) {
825 assert(op
[0]->type
->is_float());
826 if (num_parameters
== 2) {
827 assert(op
[1]->type
->is_float());
828 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++)
829 data
.f
[c
] = atan2f(op
[0]->value
.f
[c
], op
[1]->value
.f
[c
]);
831 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++)
832 data
.f
[c
] = atanf(op
[0]->value
.f
[c
]);
834 } else if (strcmp(callee
, "dFdx") == 0 || strcmp(callee
, "dFdy") == 0) {
835 return ir_constant::zero(mem_ctx
, this->type
);
836 } else if (strcmp(callee
, "ceil") == 0) {
837 expr
= new(mem_ctx
) ir_expression(ir_unop_ceil
, type
, op
[0], NULL
);
838 } else if (strcmp(callee
, "clamp") == 0) {
839 assert(num_parameters
== 3);
840 unsigned c1_inc
= op
[1]->type
->is_scalar() ? 0 : 1;
841 unsigned c2_inc
= op
[2]->type
->is_scalar() ? 0 : 1;
842 for (unsigned c
= 0, c1
= 0, c2
= 0;
843 c
< op
[0]->type
->components();
844 c1
+= c1_inc
, c2
+= c2_inc
, c
++) {
846 switch (op
[0]->type
->base_type
) {
848 data
.u
[c
] = CLAMP(op
[0]->value
.u
[c
], op
[1]->value
.u
[c1
],
852 data
.i
[c
] = CLAMP(op
[0]->value
.i
[c
], op
[1]->value
.i
[c1
],
855 case GLSL_TYPE_FLOAT
:
856 data
.f
[c
] = CLAMP(op
[0]->value
.f
[c
], op
[1]->value
.f
[c1
],
860 assert(!"Should not get here.");
863 } else if (strcmp(callee
, "cos") == 0) {
864 expr
= new(mem_ctx
) ir_expression(ir_unop_cos
, type
, op
[0], NULL
);
865 } else if (strcmp(callee
, "cosh") == 0) {
866 assert(op
[0]->type
->is_float());
867 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++)
868 data
.f
[c
] = coshf(op
[0]->value
.f
[c
]);
869 } else if (strcmp(callee
, "cross") == 0) {
870 expr
= new(mem_ctx
) ir_expression(ir_binop_cross
, type
, op
[0], op
[1]);
871 } else if (strcmp(callee
, "degrees") == 0) {
872 assert(op
[0]->type
->is_float());
873 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++)
874 data
.f
[c
] = 180.0/M_PI
* op
[0]->value
.f
[c
];
875 } else if (strcmp(callee
, "distance") == 0) {
876 assert(op
[0]->type
->is_float() && op
[1]->type
->is_float());
877 float length_squared
= 0.0;
878 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
879 float t
= op
[0]->value
.f
[c
] - op
[1]->value
.f
[c
];
880 length_squared
+= t
* t
;
882 return new(mem_ctx
) ir_constant(sqrtf(length_squared
));
883 } else if (strcmp(callee
, "dot") == 0) {
884 return new(mem_ctx
) ir_constant(dot(op
[0], op
[1]));
885 } else if (strcmp(callee
, "equal") == 0) {
886 assert(op
[0]->type
->is_vector() && op
[1] && op
[1]->type
->is_vector());
887 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
888 switch (op
[0]->type
->base_type
) {
890 data
.b
[c
] = op
[0]->value
.u
[c
] == op
[1]->value
.u
[c
];
893 data
.b
[c
] = op
[0]->value
.i
[c
] == op
[1]->value
.i
[c
];
895 case GLSL_TYPE_FLOAT
:
896 data
.b
[c
] = op
[0]->value
.f
[c
] == op
[1]->value
.f
[c
];
899 assert(!"Should not get here.");
902 } else if (strcmp(callee
, "exp") == 0) {
903 expr
= new(mem_ctx
) ir_expression(ir_unop_exp
, type
, op
[0], NULL
);
904 } else if (strcmp(callee
, "exp2") == 0) {
905 expr
= new(mem_ctx
) ir_expression(ir_unop_exp2
, type
, op
[0], NULL
);
906 } else if (strcmp(callee
, "faceforward") == 0) {
907 if (dot(op
[2], op
[1]) < 0)
909 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++)
910 data
.f
[c
] = -op
[0]->value
.f
[c
];
911 } else if (strcmp(callee
, "floor") == 0) {
912 expr
= new(mem_ctx
) ir_expression(ir_unop_floor
, type
, op
[0], NULL
);
913 } else if (strcmp(callee
, "fract") == 0) {
914 expr
= new(mem_ctx
) ir_expression(ir_unop_fract
, type
, op
[0], NULL
);
915 } else if (strcmp(callee
, "fwidth") == 0) {
916 return ir_constant::zero(mem_ctx
, this->type
);
917 } else if (strcmp(callee
, "greaterThan") == 0) {
918 assert(op
[0]->type
->is_vector() && op
[1] && op
[1]->type
->is_vector());
919 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
920 switch (op
[0]->type
->base_type
) {
922 data
.b
[c
] = op
[0]->value
.u
[c
] > op
[1]->value
.u
[c
];
925 data
.b
[c
] = op
[0]->value
.i
[c
] > op
[1]->value
.i
[c
];
927 case GLSL_TYPE_FLOAT
:
928 data
.b
[c
] = op
[0]->value
.f
[c
] > op
[1]->value
.f
[c
];
931 assert(!"Should not get here.");
934 } else if (strcmp(callee
, "greaterThanEqual") == 0) {
935 assert(op
[0]->type
->is_vector() && op
[1] && op
[1]->type
->is_vector());
936 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
937 switch (op
[0]->type
->base_type
) {
939 data
.b
[c
] = op
[0]->value
.u
[c
] >= op
[1]->value
.u
[c
];
942 data
.b
[c
] = op
[0]->value
.i
[c
] >= op
[1]->value
.i
[c
];
944 case GLSL_TYPE_FLOAT
:
945 data
.b
[c
] = op
[0]->value
.f
[c
] >= op
[1]->value
.f
[c
];
948 assert(!"Should not get here.");
951 } else if (strcmp(callee
, "inversesqrt") == 0) {
952 expr
= new(mem_ctx
) ir_expression(ir_unop_rsq
, type
, op
[0], NULL
);
953 } else if (strcmp(callee
, "length") == 0) {
954 return new(mem_ctx
) ir_constant(sqrtf(dot(op
[0], op
[0])));
955 } else if (strcmp(callee
, "lessThan") == 0) {
956 assert(op
[0]->type
->is_vector() && op
[1] && op
[1]->type
->is_vector());
957 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
958 switch (op
[0]->type
->base_type
) {
960 data
.b
[c
] = op
[0]->value
.u
[c
] < op
[1]->value
.u
[c
];
963 data
.b
[c
] = op
[0]->value
.i
[c
] < op
[1]->value
.i
[c
];
965 case GLSL_TYPE_FLOAT
:
966 data
.b
[c
] = op
[0]->value
.f
[c
] < op
[1]->value
.f
[c
];
969 assert(!"Should not get here.");
972 } else if (strcmp(callee
, "lessThanEqual") == 0) {
973 assert(op
[0]->type
->is_vector() && op
[1] && op
[1]->type
->is_vector());
974 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
975 switch (op
[0]->type
->base_type
) {
977 data
.b
[c
] = op
[0]->value
.u
[c
] <= op
[1]->value
.u
[c
];
980 data
.b
[c
] = op
[0]->value
.i
[c
] <= op
[1]->value
.i
[c
];
982 case GLSL_TYPE_FLOAT
:
983 data
.b
[c
] = op
[0]->value
.f
[c
] <= op
[1]->value
.f
[c
];
986 assert(!"Should not get here.");
989 } else if (strcmp(callee
, "log") == 0) {
990 expr
= new(mem_ctx
) ir_expression(ir_unop_log
, type
, op
[0], NULL
);
991 } else if (strcmp(callee
, "log2") == 0) {
992 expr
= new(mem_ctx
) ir_expression(ir_unop_log2
, type
, op
[0], NULL
);
993 } else if (strcmp(callee
, "matrixCompMult") == 0) {
994 assert(op
[0]->type
->is_float() && op
[1]->type
->is_float());
995 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++)
996 data
.f
[c
] = op
[0]->value
.f
[c
] * op
[1]->value
.f
[c
];
997 } else if (strcmp(callee
, "max") == 0) {
998 expr
= new(mem_ctx
) ir_expression(ir_binop_max
, type
, op
[0], op
[1]);
999 } else if (strcmp(callee
, "min") == 0) {
1000 expr
= new(mem_ctx
) ir_expression(ir_binop_min
, type
, op
[0], op
[1]);
1001 } else if (strcmp(callee
, "mix") == 0) {
1002 return NULL
; /* FINISHME: implement this */
1003 } else if (strcmp(callee
, "mod") == 0) {
1004 expr
= new(mem_ctx
) ir_expression(ir_binop_mod
, type
, op
[0], op
[1]);
1005 } else if (strcmp(callee
, "normalize") == 0) {
1006 assert(op
[0]->type
->is_float());
1007 float length
= sqrtf(dot(op
[0], op
[0]));
1010 return ir_constant::zero(mem_ctx
, this->type
);
1012 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++)
1013 data
.f
[c
] = op
[0]->value
.f
[c
] / length
;
1014 } else if (strcmp(callee
, "not") == 0) {
1015 expr
= new(mem_ctx
) ir_expression(ir_unop_logic_not
, type
, op
[0], NULL
);
1016 } else if (strcmp(callee
, "notEqual") == 0) {
1017 assert(op
[0]->type
->is_vector() && op
[1] && op
[1]->type
->is_vector());
1018 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++) {
1019 switch (op
[0]->type
->base_type
) {
1020 case GLSL_TYPE_UINT
:
1021 data
.b
[c
] = op
[0]->value
.u
[c
] != op
[1]->value
.u
[c
];
1024 data
.b
[c
] = op
[0]->value
.i
[c
] != op
[1]->value
.i
[c
];
1026 case GLSL_TYPE_FLOAT
:
1027 data
.b
[c
] = op
[0]->value
.f
[c
] != op
[1]->value
.f
[c
];
1030 assert(!"Should not get here.");
1033 } else if (strcmp(callee
, "outerProduct") == 0) {
1034 return NULL
; /* FINISHME: implement this */
1035 } else if (strcmp(callee
, "pow") == 0) {
1036 expr
= new(mem_ctx
) ir_expression(ir_binop_pow
, type
, op
[0], op
[1]);
1037 } else if (strcmp(callee
, "radians") == 0) {
1038 assert(op
[0]->type
->is_float());
1039 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++)
1040 data
.f
[c
] = M_PI
/180.0 * op
[0]->value
.f
[c
];
1041 } else if (strcmp(callee
, "reflect") == 0) {
1042 assert(op
[0]->type
->is_float());
1043 float dot_NI
= dot(op
[1], op
[0]);
1044 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++)
1045 data
.f
[c
] = op
[0]->value
.f
[c
] - 2 * dot_NI
* op
[1]->value
.f
[c
];
1046 } else if (strcmp(callee
, "refract") == 0) {
1047 const float eta
= op
[2]->value
.f
[0];
1048 const float dot_NI
= dot(op
[1], op
[0]);
1049 const float k
= 1.0 - eta
* eta
* (1.0 - dot_NI
* dot_NI
);
1051 return ir_constant::zero(mem_ctx
, this->type
);
1053 for (unsigned c
= 0; c
< type
->components(); c
++) {
1054 data
.f
[c
] = eta
* op
[0]->value
.f
[c
] - (eta
* dot_NI
+ sqrtf(k
))
1055 * op
[1]->value
.f
[c
];
1058 } else if (strcmp(callee
, "sign") == 0) {
1059 expr
= new(mem_ctx
) ir_expression(ir_unop_sign
, type
, op
[0], NULL
);
1060 } else if (strcmp(callee
, "sin") == 0) {
1061 expr
= new(mem_ctx
) ir_expression(ir_unop_sin
, type
, op
[0], NULL
);
1062 } else if (strcmp(callee
, "sinh") == 0) {
1063 assert(op
[0]->type
->is_float());
1064 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++)
1065 data
.f
[c
] = sinhf(op
[0]->value
.f
[c
]);
1066 } else if (strcmp(callee
, "smoothstep") == 0) {
1067 return NULL
; /* FINISHME: implement this */
1068 } else if (strcmp(callee
, "sqrt") == 0) {
1069 expr
= new(mem_ctx
) ir_expression(ir_unop_sqrt
, type
, op
[0], NULL
);
1070 } else if (strcmp(callee
, "step") == 0) {
1071 assert(op
[0]->type
->is_float() && op
[1]->type
->is_float());
1072 /* op[0] (edge) may be either a scalar or a vector */
1073 const unsigned c0_inc
= op
[0]->type
->is_scalar() ? 0 : 1;
1074 for (unsigned c
= 0, c0
= 0; c
< type
->components(); c0
+= c0_inc
, c
++)
1075 data
.f
[c
] = (op
[1]->value
.f
[c
] < op
[0]->value
.f
[c0
]) ? 0.0 : 1.0;
1076 } else if (strcmp(callee
, "tan") == 0) {
1077 assert(op
[0]->type
->is_float());
1078 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++)
1079 data
.f
[c
] = tanf(op
[0]->value
.f
[c
]);
1080 } else if (strcmp(callee
, "tanh") == 0) {
1081 assert(op
[0]->type
->is_float());
1082 for (unsigned c
= 0; c
< op
[0]->type
->components(); c
++)
1083 data
.f
[c
] = tanhf(op
[0]->value
.f
[c
]);
1084 } else if (strcmp(callee
, "transpose") == 0) {
1085 return NULL
; /* FINISHME: implement this */
1087 /* Unsupported builtin - some are not allowed in constant expressions. */
1092 return expr
->constant_expression_value();
1094 return new(mem_ctx
) ir_constant(this->type
, &data
);