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 "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 case ir_unop_unpack_half_2x16_split_x
:
302 case ir_unop_unpack_half_2x16_split_y
:
303 this->type
= glsl_type::float_type
;
306 case ir_unop_unpack_double_2x32
:
307 this->type
= glsl_type::uvec2_type
;
311 this->type
= glsl_type::bool_type
;
314 case ir_unop_pack_snorm_2x16
:
315 case ir_unop_pack_snorm_4x8
:
316 case ir_unop_pack_unorm_2x16
:
317 case ir_unop_pack_unorm_4x8
:
318 case ir_unop_pack_half_2x16
:
319 this->type
= glsl_type::uint_type
;
322 case ir_unop_pack_double_2x32
:
323 this->type
= glsl_type::double_type
;
326 case ir_unop_unpack_snorm_2x16
:
327 case ir_unop_unpack_unorm_2x16
:
328 case ir_unop_unpack_half_2x16
:
329 this->type
= glsl_type::vec2_type
;
332 case ir_unop_unpack_snorm_4x8
:
333 case ir_unop_unpack_unorm_4x8
:
334 this->type
= glsl_type::vec4_type
;
337 case ir_unop_frexp_sig
:
338 this->type
= op0
->type
;
340 case ir_unop_frexp_exp
:
341 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
,
342 op0
->type
->vector_elements
, 1);
345 case ir_unop_get_buffer_size
:
346 case ir_unop_ssbo_unsized_array_length
:
347 this->type
= glsl_type::int_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_pack_half_2x16_split
:
430 this->type
= glsl_type::uint_type
;
433 case ir_binop_imul_high
:
435 case ir_binop_borrow
:
436 case ir_binop_lshift
:
437 case ir_binop_rshift
:
440 case ir_binop_interpolate_at_offset
:
441 case ir_binop_interpolate_at_sample
:
442 this->type
= op0
->type
;
445 case ir_binop_vector_extract
:
446 this->type
= op0
->type
->get_scalar_type();
450 assert(!"not reached: missing automatic type setup for ir_expression");
451 this->type
= glsl_type::float_type
;
455 ir_expression::ir_expression(int op
, ir_rvalue
*op0
, ir_rvalue
*op1
,
457 : ir_rvalue(ir_type_expression
)
459 this->operation
= ir_expression_operation(op
);
460 this->operands
[0] = op0
;
461 this->operands
[1] = op1
;
462 this->operands
[2] = op2
;
463 this->operands
[3] = NULL
;
465 assert(op
> ir_last_binop
&& op
<= ir_last_triop
);
467 switch (this->operation
) {
470 case ir_triop_bitfield_extract
:
471 case ir_triop_vector_insert
:
472 this->type
= op0
->type
;
477 this->type
= op1
->type
;
481 assert(!"not reached: missing automatic type setup for ir_expression");
482 this->type
= glsl_type::float_type
;
487 ir_expression::get_num_operands(ir_expression_operation op
)
489 assert(op
<= ir_last_opcode
);
491 if (op
<= ir_last_unop
)
494 if (op
<= ir_last_binop
)
497 if (op
<= ir_last_triop
)
500 if (op
<= ir_last_quadop
)
507 static const char *const operator_strs
[] = {
565 "unpackHalf2x16_split_x",
566 "unpackHalf2x16_split_y",
578 "interpolate_at_centroid",
580 "ssbo_unsized_array_length",
609 "packHalf2x16_split",
614 "interpolate_at_offset",
615 "interpolate_at_sample",
626 const char *ir_expression::operator_string(ir_expression_operation op
)
628 assert((unsigned int) op
< ARRAY_SIZE(operator_strs
));
629 assert(ARRAY_SIZE(operator_strs
) == (ir_quadop_vector
+ 1));
630 return operator_strs
[op
];
633 const char *ir_expression::operator_string()
635 return operator_string(this->operation
);
639 depth_layout_string(ir_depth_layout layout
)
642 case ir_depth_layout_none
: return "";
643 case ir_depth_layout_any
: return "depth_any";
644 case ir_depth_layout_greater
: return "depth_greater";
645 case ir_depth_layout_less
: return "depth_less";
646 case ir_depth_layout_unchanged
: return "depth_unchanged";
654 ir_expression_operation
655 ir_expression::get_operator(const char *str
)
657 const int operator_count
= sizeof(operator_strs
) / sizeof(operator_strs
[0]);
658 for (int op
= 0; op
< operator_count
; op
++) {
659 if (strcmp(str
, operator_strs
[op
]) == 0)
660 return (ir_expression_operation
) op
;
662 return (ir_expression_operation
) -1;
666 ir_expression::variable_referenced() const
669 case ir_binop_vector_extract
:
670 case ir_triop_vector_insert
:
671 /* We get these for things like a[0] where a is a vector type. In these
672 * cases we want variable_referenced() to return the actual vector
673 * variable this is wrapping.
675 return operands
[0]->variable_referenced();
677 return ir_rvalue::variable_referenced();
681 ir_constant::ir_constant()
682 : ir_rvalue(ir_type_constant
)
686 ir_constant::ir_constant(const struct glsl_type
*type
,
687 const ir_constant_data
*data
)
688 : ir_rvalue(ir_type_constant
)
690 assert((type
->base_type
>= GLSL_TYPE_UINT
)
691 && (type
->base_type
<= GLSL_TYPE_BOOL
));
694 memcpy(& this->value
, data
, sizeof(this->value
));
697 ir_constant::ir_constant(float f
, unsigned vector_elements
)
698 : ir_rvalue(ir_type_constant
)
700 assert(vector_elements
<= 4);
701 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
, vector_elements
, 1);
702 for (unsigned i
= 0; i
< vector_elements
; i
++) {
703 this->value
.f
[i
] = f
;
705 for (unsigned i
= vector_elements
; i
< 16; i
++) {
706 this->value
.f
[i
] = 0;
710 ir_constant::ir_constant(double d
, unsigned vector_elements
)
711 : ir_rvalue(ir_type_constant
)
713 assert(vector_elements
<= 4);
714 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
, vector_elements
, 1);
715 for (unsigned i
= 0; i
< vector_elements
; i
++) {
716 this->value
.d
[i
] = d
;
718 for (unsigned i
= vector_elements
; i
< 16; i
++) {
719 this->value
.d
[i
] = 0.0;
723 ir_constant::ir_constant(unsigned int u
, unsigned vector_elements
)
724 : ir_rvalue(ir_type_constant
)
726 assert(vector_elements
<= 4);
727 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT
, vector_elements
, 1);
728 for (unsigned i
= 0; i
< vector_elements
; i
++) {
729 this->value
.u
[i
] = u
;
731 for (unsigned i
= vector_elements
; i
< 16; i
++) {
732 this->value
.u
[i
] = 0;
736 ir_constant::ir_constant(int integer
, unsigned vector_elements
)
737 : ir_rvalue(ir_type_constant
)
739 assert(vector_elements
<= 4);
740 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
, vector_elements
, 1);
741 for (unsigned i
= 0; i
< vector_elements
; i
++) {
742 this->value
.i
[i
] = integer
;
744 for (unsigned i
= vector_elements
; i
< 16; i
++) {
745 this->value
.i
[i
] = 0;
749 ir_constant::ir_constant(bool b
, unsigned vector_elements
)
750 : ir_rvalue(ir_type_constant
)
752 assert(vector_elements
<= 4);
753 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
, vector_elements
, 1);
754 for (unsigned i
= 0; i
< vector_elements
; i
++) {
755 this->value
.b
[i
] = b
;
757 for (unsigned i
= vector_elements
; i
< 16; i
++) {
758 this->value
.b
[i
] = false;
762 ir_constant::ir_constant(const ir_constant
*c
, unsigned i
)
763 : ir_rvalue(ir_type_constant
)
765 this->type
= c
->type
->get_base_type();
767 switch (this->type
->base_type
) {
768 case GLSL_TYPE_UINT
: this->value
.u
[0] = c
->value
.u
[i
]; break;
769 case GLSL_TYPE_INT
: this->value
.i
[0] = c
->value
.i
[i
]; break;
770 case GLSL_TYPE_FLOAT
: this->value
.f
[0] = c
->value
.f
[i
]; break;
771 case GLSL_TYPE_BOOL
: this->value
.b
[0] = c
->value
.b
[i
]; break;
772 case GLSL_TYPE_DOUBLE
: this->value
.d
[0] = c
->value
.d
[i
]; break;
773 default: assert(!"Should not get here."); break;
777 ir_constant::ir_constant(const struct glsl_type
*type
, exec_list
*value_list
)
778 : ir_rvalue(ir_type_constant
)
782 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
783 || type
->is_record() || type
->is_array());
785 if (type
->is_array()) {
786 this->array_elements
= ralloc_array(this, ir_constant
*, type
->length
);
788 foreach_in_list(ir_constant
, value
, value_list
) {
789 assert(value
->as_constant() != NULL
);
791 this->array_elements
[i
++] = value
;
796 /* If the constant is a record, the types of each of the entries in
797 * value_list must be a 1-for-1 match with the structure components. Each
798 * entry must also be a constant. Just move the nodes from the value_list
799 * to the list in the ir_constant.
801 /* FINISHME: Should there be some type checking and / or assertions here? */
802 /* FINISHME: Should the new constant take ownership of the nodes from
803 * FINISHME: value_list, or should it make copies?
805 if (type
->is_record()) {
806 value_list
->move_nodes_to(& this->components
);
810 for (unsigned i
= 0; i
< 16; i
++) {
811 this->value
.u
[i
] = 0;
814 ir_constant
*value
= (ir_constant
*) (value_list
->head
);
816 /* Constructors with exactly one scalar argument are special for vectors
817 * and matrices. For vectors, the scalar value is replicated to fill all
818 * the components. For matrices, the scalar fills the components of the
819 * diagonal while the rest is filled with 0.
821 if (value
->type
->is_scalar() && value
->next
->is_tail_sentinel()) {
822 if (type
->is_matrix()) {
823 /* Matrix - fill diagonal (rest is already set to 0) */
824 assert(type
->base_type
== GLSL_TYPE_FLOAT
||
825 type
->base_type
== GLSL_TYPE_DOUBLE
);
826 for (unsigned i
= 0; i
< type
->matrix_columns
; i
++) {
827 if (type
->base_type
== GLSL_TYPE_FLOAT
)
828 this->value
.f
[i
* type
->vector_elements
+ i
] =
831 this->value
.d
[i
* type
->vector_elements
+ i
] =
835 /* Vector or scalar - fill all components */
836 switch (type
->base_type
) {
839 for (unsigned i
= 0; i
< type
->components(); i
++)
840 this->value
.u
[i
] = value
->value
.u
[0];
842 case GLSL_TYPE_FLOAT
:
843 for (unsigned i
= 0; i
< type
->components(); i
++)
844 this->value
.f
[i
] = value
->value
.f
[0];
846 case GLSL_TYPE_DOUBLE
:
847 for (unsigned i
= 0; i
< type
->components(); i
++)
848 this->value
.d
[i
] = value
->value
.d
[0];
851 for (unsigned i
= 0; i
< type
->components(); i
++)
852 this->value
.b
[i
] = value
->value
.b
[0];
855 assert(!"Should not get here.");
862 if (type
->is_matrix() && value
->type
->is_matrix()) {
863 assert(value
->next
->is_tail_sentinel());
865 /* From section 5.4.2 of the GLSL 1.20 spec:
866 * "If a matrix is constructed from a matrix, then each component
867 * (column i, row j) in the result that has a corresponding component
868 * (column i, row j) in the argument will be initialized from there."
870 unsigned cols
= MIN2(type
->matrix_columns
, value
->type
->matrix_columns
);
871 unsigned rows
= MIN2(type
->vector_elements
, value
->type
->vector_elements
);
872 for (unsigned i
= 0; i
< cols
; i
++) {
873 for (unsigned j
= 0; j
< rows
; j
++) {
874 const unsigned src
= i
* value
->type
->vector_elements
+ j
;
875 const unsigned dst
= i
* type
->vector_elements
+ j
;
876 this->value
.f
[dst
] = value
->value
.f
[src
];
880 /* "All other components will be initialized to the identity matrix." */
881 for (unsigned i
= cols
; i
< type
->matrix_columns
; i
++)
882 this->value
.f
[i
* type
->vector_elements
+ i
] = 1.0;
887 /* Use each component from each entry in the value_list to initialize one
888 * component of the constant being constructed.
890 for (unsigned i
= 0; i
< type
->components(); /* empty */) {
891 assert(value
->as_constant() != NULL
);
892 assert(!value
->is_tail_sentinel());
894 for (unsigned j
= 0; j
< value
->type
->components(); j
++) {
895 switch (type
->base_type
) {
897 this->value
.u
[i
] = value
->get_uint_component(j
);
900 this->value
.i
[i
] = value
->get_int_component(j
);
902 case GLSL_TYPE_FLOAT
:
903 this->value
.f
[i
] = value
->get_float_component(j
);
906 this->value
.b
[i
] = value
->get_bool_component(j
);
908 case GLSL_TYPE_DOUBLE
:
909 this->value
.d
[i
] = value
->get_double_component(j
);
912 /* FINISHME: What to do? Exceptions are not the answer.
918 if (i
>= type
->components())
922 value
= (ir_constant
*) value
->next
;
927 ir_constant::zero(void *mem_ctx
, const glsl_type
*type
)
929 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
930 || type
->is_record() || type
->is_array());
932 ir_constant
*c
= new(mem_ctx
) ir_constant
;
934 memset(&c
->value
, 0, sizeof(c
->value
));
936 if (type
->is_array()) {
937 c
->array_elements
= ralloc_array(c
, ir_constant
*, type
->length
);
939 for (unsigned i
= 0; i
< type
->length
; i
++)
940 c
->array_elements
[i
] = ir_constant::zero(c
, type
->fields
.array
);
943 if (type
->is_record()) {
944 for (unsigned i
= 0; i
< type
->length
; i
++) {
945 ir_constant
*comp
= ir_constant::zero(mem_ctx
, type
->fields
.structure
[i
].type
);
946 c
->components
.push_tail(comp
);
954 ir_constant::get_bool_component(unsigned i
) const
956 switch (this->type
->base_type
) {
957 case GLSL_TYPE_UINT
: return this->value
.u
[i
] != 0;
958 case GLSL_TYPE_INT
: return this->value
.i
[i
] != 0;
959 case GLSL_TYPE_FLOAT
: return ((int)this->value
.f
[i
]) != 0;
960 case GLSL_TYPE_BOOL
: return this->value
.b
[i
];
961 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
] != 0.0;
962 default: assert(!"Should not get here."); break;
965 /* Must return something to make the compiler happy. This is clearly an
972 ir_constant::get_float_component(unsigned i
) const
974 switch (this->type
->base_type
) {
975 case GLSL_TYPE_UINT
: return (float) this->value
.u
[i
];
976 case GLSL_TYPE_INT
: return (float) this->value
.i
[i
];
977 case GLSL_TYPE_FLOAT
: return this->value
.f
[i
];
978 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0f
: 0.0f
;
979 case GLSL_TYPE_DOUBLE
: return (float) this->value
.d
[i
];
980 default: assert(!"Should not get here."); break;
983 /* Must return something to make the compiler happy. This is clearly an
990 ir_constant::get_double_component(unsigned i
) const
992 switch (this->type
->base_type
) {
993 case GLSL_TYPE_UINT
: return (double) this->value
.u
[i
];
994 case GLSL_TYPE_INT
: return (double) this->value
.i
[i
];
995 case GLSL_TYPE_FLOAT
: return (double) this->value
.f
[i
];
996 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0 : 0.0;
997 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
];
998 default: assert(!"Should not get here."); break;
1001 /* Must return something to make the compiler happy. This is clearly an
1008 ir_constant::get_int_component(unsigned i
) const
1010 switch (this->type
->base_type
) {
1011 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1012 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1013 case GLSL_TYPE_FLOAT
: return (int) this->value
.f
[i
];
1014 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1015 case GLSL_TYPE_DOUBLE
: return (int) this->value
.d
[i
];
1016 default: assert(!"Should not get here."); break;
1019 /* Must return something to make the compiler happy. This is clearly an
1026 ir_constant::get_uint_component(unsigned i
) const
1028 switch (this->type
->base_type
) {
1029 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1030 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1031 case GLSL_TYPE_FLOAT
: return (unsigned) this->value
.f
[i
];
1032 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1033 case GLSL_TYPE_DOUBLE
: return (unsigned) this->value
.d
[i
];
1034 default: assert(!"Should not get here."); break;
1037 /* Must return something to make the compiler happy. This is clearly an
1044 ir_constant::get_array_element(unsigned i
) const
1046 assert(this->type
->is_array());
1048 /* From page 35 (page 41 of the PDF) of the GLSL 1.20 spec:
1050 * "Behavior is undefined if a shader subscripts an array with an index
1051 * less than 0 or greater than or equal to the size the array was
1054 * Most out-of-bounds accesses are removed before things could get this far.
1055 * There are cases where non-constant array index values can get constant
1060 else if (i
>= this->type
->length
)
1061 i
= this->type
->length
- 1;
1063 return array_elements
[i
];
1067 ir_constant::get_record_field(const char *name
)
1069 int idx
= this->type
->field_index(name
);
1074 if (this->components
.is_empty())
1077 exec_node
*node
= this->components
.head
;
1078 for (int i
= 0; i
< idx
; i
++) {
1081 /* If the end of the list is encountered before the element matching the
1082 * requested field is found, return NULL.
1084 if (node
->is_tail_sentinel())
1088 return (ir_constant
*) node
;
1092 ir_constant::copy_offset(ir_constant
*src
, int offset
)
1094 switch (this->type
->base_type
) {
1095 case GLSL_TYPE_UINT
:
1097 case GLSL_TYPE_FLOAT
:
1098 case GLSL_TYPE_DOUBLE
:
1099 case GLSL_TYPE_BOOL
: {
1100 unsigned int size
= src
->type
->components();
1101 assert (size
<= this->type
->components() - offset
);
1102 for (unsigned int i
=0; i
<size
; i
++) {
1103 switch (this->type
->base_type
) {
1104 case GLSL_TYPE_UINT
:
1105 value
.u
[i
+offset
] = src
->get_uint_component(i
);
1108 value
.i
[i
+offset
] = src
->get_int_component(i
);
1110 case GLSL_TYPE_FLOAT
:
1111 value
.f
[i
+offset
] = src
->get_float_component(i
);
1113 case GLSL_TYPE_BOOL
:
1114 value
.b
[i
+offset
] = src
->get_bool_component(i
);
1116 case GLSL_TYPE_DOUBLE
:
1117 value
.d
[i
+offset
] = src
->get_double_component(i
);
1119 default: // Shut up the compiler
1126 case GLSL_TYPE_STRUCT
: {
1127 assert (src
->type
== this->type
);
1128 this->components
.make_empty();
1129 foreach_in_list(ir_constant
, orig
, &src
->components
) {
1130 this->components
.push_tail(orig
->clone(this, NULL
));
1135 case GLSL_TYPE_ARRAY
: {
1136 assert (src
->type
== this->type
);
1137 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1138 this->array_elements
[i
] = src
->array_elements
[i
]->clone(this, NULL
);
1144 assert(!"Should not get here.");
1150 ir_constant::copy_masked_offset(ir_constant
*src
, int offset
, unsigned int mask
)
1152 assert (!type
->is_array() && !type
->is_record());
1154 if (!type
->is_vector() && !type
->is_matrix()) {
1160 for (int i
=0; i
<4; i
++) {
1161 if (mask
& (1 << i
)) {
1162 switch (this->type
->base_type
) {
1163 case GLSL_TYPE_UINT
:
1164 value
.u
[i
+offset
] = src
->get_uint_component(id
++);
1167 value
.i
[i
+offset
] = src
->get_int_component(id
++);
1169 case GLSL_TYPE_FLOAT
:
1170 value
.f
[i
+offset
] = src
->get_float_component(id
++);
1172 case GLSL_TYPE_BOOL
:
1173 value
.b
[i
+offset
] = src
->get_bool_component(id
++);
1175 case GLSL_TYPE_DOUBLE
:
1176 value
.d
[i
+offset
] = src
->get_double_component(id
++);
1179 assert(!"Should not get here.");
1187 ir_constant::has_value(const ir_constant
*c
) const
1189 if (this->type
!= c
->type
)
1192 if (this->type
->is_array()) {
1193 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1194 if (!this->array_elements
[i
]->has_value(c
->array_elements
[i
]))
1200 if (this->type
->base_type
== GLSL_TYPE_STRUCT
) {
1201 const exec_node
*a_node
= this->components
.head
;
1202 const exec_node
*b_node
= c
->components
.head
;
1204 while (!a_node
->is_tail_sentinel()) {
1205 assert(!b_node
->is_tail_sentinel());
1207 const ir_constant
*const a_field
= (ir_constant
*) a_node
;
1208 const ir_constant
*const b_field
= (ir_constant
*) b_node
;
1210 if (!a_field
->has_value(b_field
))
1213 a_node
= a_node
->next
;
1214 b_node
= b_node
->next
;
1220 for (unsigned i
= 0; i
< this->type
->components(); i
++) {
1221 switch (this->type
->base_type
) {
1222 case GLSL_TYPE_UINT
:
1223 if (this->value
.u
[i
] != c
->value
.u
[i
])
1227 if (this->value
.i
[i
] != c
->value
.i
[i
])
1230 case GLSL_TYPE_FLOAT
:
1231 if (this->value
.f
[i
] != c
->value
.f
[i
])
1234 case GLSL_TYPE_BOOL
:
1235 if (this->value
.b
[i
] != c
->value
.b
[i
])
1238 case GLSL_TYPE_DOUBLE
:
1239 if (this->value
.d
[i
] != c
->value
.d
[i
])
1243 assert(!"Should not get here.");
1252 ir_constant::is_value(float f
, int i
) const
1254 if (!this->type
->is_scalar() && !this->type
->is_vector())
1257 /* Only accept boolean values for 0/1. */
1258 if (int(bool(i
)) != i
&& this->type
->is_boolean())
1261 for (unsigned c
= 0; c
< this->type
->vector_elements
; c
++) {
1262 switch (this->type
->base_type
) {
1263 case GLSL_TYPE_FLOAT
:
1264 if (this->value
.f
[c
] != f
)
1268 if (this->value
.i
[c
] != i
)
1271 case GLSL_TYPE_UINT
:
1272 if (this->value
.u
[c
] != unsigned(i
))
1275 case GLSL_TYPE_BOOL
:
1276 if (this->value
.b
[c
] != bool(i
))
1279 case GLSL_TYPE_DOUBLE
:
1280 if (this->value
.d
[c
] != double(f
))
1284 /* The only other base types are structures, arrays, and samplers.
1285 * Samplers cannot be constants, and the others should have been
1286 * filtered out above.
1288 assert(!"Should not get here.");
1297 ir_constant::is_zero() const
1299 return is_value(0.0, 0);
1303 ir_constant::is_one() const
1305 return is_value(1.0, 1);
1309 ir_constant::is_negative_one() const
1311 return is_value(-1.0, -1);
1315 ir_constant::is_uint16_constant() const
1317 if (!type
->is_integer())
1320 return value
.u
[0] < (1 << 16);
1324 : ir_instruction(ir_type_loop
)
1329 ir_dereference_variable::ir_dereference_variable(ir_variable
*var
)
1330 : ir_dereference(ir_type_dereference_variable
)
1332 assert(var
!= NULL
);
1335 this->type
= var
->type
;
1339 ir_dereference_array::ir_dereference_array(ir_rvalue
*value
,
1340 ir_rvalue
*array_index
)
1341 : ir_dereference(ir_type_dereference_array
)
1343 this->array_index
= array_index
;
1344 this->set_array(value
);
1348 ir_dereference_array::ir_dereference_array(ir_variable
*var
,
1349 ir_rvalue
*array_index
)
1350 : ir_dereference(ir_type_dereference_array
)
1352 void *ctx
= ralloc_parent(var
);
1354 this->array_index
= array_index
;
1355 this->set_array(new(ctx
) ir_dereference_variable(var
));
1360 ir_dereference_array::set_array(ir_rvalue
*value
)
1362 assert(value
!= NULL
);
1364 this->array
= value
;
1366 const glsl_type
*const vt
= this->array
->type
;
1368 if (vt
->is_array()) {
1369 type
= vt
->fields
.array
;
1370 } else if (vt
->is_matrix()) {
1371 type
= vt
->column_type();
1372 } else if (vt
->is_vector()) {
1373 type
= vt
->get_base_type();
1378 ir_dereference_record::ir_dereference_record(ir_rvalue
*value
,
1380 : ir_dereference(ir_type_dereference_record
)
1382 assert(value
!= NULL
);
1384 this->record
= value
;
1385 this->field
= ralloc_strdup(this, field
);
1386 this->type
= this->record
->type
->field_type(field
);
1390 ir_dereference_record::ir_dereference_record(ir_variable
*var
,
1392 : ir_dereference(ir_type_dereference_record
)
1394 void *ctx
= ralloc_parent(var
);
1396 this->record
= new(ctx
) ir_dereference_variable(var
);
1397 this->field
= ralloc_strdup(this, field
);
1398 this->type
= this->record
->type
->field_type(field
);
1402 ir_dereference::is_lvalue() const
1404 ir_variable
*var
= this->variable_referenced();
1406 /* Every l-value derference chain eventually ends in a variable.
1408 if ((var
== NULL
) || var
->data
.read_only
)
1411 /* From section 4.1.7 of the GLSL 4.40 spec:
1413 * "Opaque variables cannot be treated as l-values; hence cannot
1414 * be used as out or inout function parameters, nor can they be
1417 if (this->type
->contains_opaque())
1424 static const char * const tex_opcode_strs
[] = { "tex", "txb", "txl", "txd", "txf", "txf_ms", "txs", "lod", "tg4", "query_levels", "texture_samples", "samples_identical" };
1426 const char *ir_texture::opcode_string()
1428 assert((unsigned int) op
< ARRAY_SIZE(tex_opcode_strs
));
1429 return tex_opcode_strs
[op
];
1433 ir_texture::get_opcode(const char *str
)
1435 const int count
= sizeof(tex_opcode_strs
) / sizeof(tex_opcode_strs
[0]);
1436 for (int op
= 0; op
< count
; op
++) {
1437 if (strcmp(str
, tex_opcode_strs
[op
]) == 0)
1438 return (ir_texture_opcode
) op
;
1440 return (ir_texture_opcode
) -1;
1445 ir_texture::set_sampler(ir_dereference
*sampler
, const glsl_type
*type
)
1447 assert(sampler
!= NULL
);
1448 assert(type
!= NULL
);
1449 this->sampler
= sampler
;
1452 if (this->op
== ir_txs
|| this->op
== ir_query_levels
||
1453 this->op
== ir_texture_samples
) {
1454 assert(type
->base_type
== GLSL_TYPE_INT
);
1455 } else if (this->op
== ir_lod
) {
1456 assert(type
->vector_elements
== 2);
1457 assert(type
->base_type
== GLSL_TYPE_FLOAT
);
1458 } else if (this->op
== ir_samples_identical
) {
1459 assert(type
== glsl_type::bool_type
);
1460 assert(sampler
->type
->base_type
== GLSL_TYPE_SAMPLER
);
1461 assert(sampler
->type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
);
1463 assert(sampler
->type
->sampler_type
== (int) type
->base_type
);
1464 if (sampler
->type
->sampler_shadow
)
1465 assert(type
->vector_elements
== 4 || type
->vector_elements
== 1);
1467 assert(type
->vector_elements
== 4);
1473 ir_swizzle::init_mask(const unsigned *comp
, unsigned count
)
1475 assert((count
>= 1) && (count
<= 4));
1477 memset(&this->mask
, 0, sizeof(this->mask
));
1478 this->mask
.num_components
= count
;
1480 unsigned dup_mask
= 0;
1483 assert(comp
[3] <= 3);
1484 dup_mask
|= (1U << comp
[3])
1485 & ((1U << comp
[0]) | (1U << comp
[1]) | (1U << comp
[2]));
1486 this->mask
.w
= comp
[3];
1489 assert(comp
[2] <= 3);
1490 dup_mask
|= (1U << comp
[2])
1491 & ((1U << comp
[0]) | (1U << comp
[1]));
1492 this->mask
.z
= comp
[2];
1495 assert(comp
[1] <= 3);
1496 dup_mask
|= (1U << comp
[1])
1497 & ((1U << comp
[0]));
1498 this->mask
.y
= comp
[1];
1501 assert(comp
[0] <= 3);
1502 this->mask
.x
= comp
[0];
1505 this->mask
.has_duplicates
= dup_mask
!= 0;
1507 /* Based on the number of elements in the swizzle and the base type
1508 * (i.e., float, int, unsigned, or bool) of the vector being swizzled,
1509 * generate the type of the resulting value.
1511 type
= glsl_type::get_instance(val
->type
->base_type
, mask
.num_components
, 1);
1514 ir_swizzle::ir_swizzle(ir_rvalue
*val
, unsigned x
, unsigned y
, unsigned z
,
1515 unsigned w
, unsigned count
)
1516 : ir_rvalue(ir_type_swizzle
), val(val
)
1518 const unsigned components
[4] = { x
, y
, z
, w
};
1519 this->init_mask(components
, count
);
1522 ir_swizzle::ir_swizzle(ir_rvalue
*val
, const unsigned *comp
,
1524 : ir_rvalue(ir_type_swizzle
), val(val
)
1526 this->init_mask(comp
, count
);
1529 ir_swizzle::ir_swizzle(ir_rvalue
*val
, ir_swizzle_mask mask
)
1530 : ir_rvalue(ir_type_swizzle
)
1534 this->type
= glsl_type::get_instance(val
->type
->base_type
,
1535 mask
.num_components
, 1);
1544 ir_swizzle::create(ir_rvalue
*val
, const char *str
, unsigned vector_length
)
1546 void *ctx
= ralloc_parent(val
);
1548 /* For each possible swizzle character, this table encodes the value in
1549 * \c idx_map that represents the 0th element of the vector. For invalid
1550 * swizzle characters (e.g., 'k'), a special value is used that will allow
1551 * detection of errors.
1553 static const unsigned char base_idx
[26] = {
1554 /* a b c d e f g h i j k l m */
1555 R
, R
, I
, I
, I
, I
, R
, I
, I
, I
, I
, I
, I
,
1556 /* n o p q r s t u v w x y z */
1557 I
, I
, S
, S
, R
, S
, S
, I
, I
, X
, X
, X
, X
1560 /* Each valid swizzle character has an entry in the previous table. This
1561 * table encodes the base index encoded in the previous table plus the actual
1562 * index of the swizzle character. When processing swizzles, the first
1563 * character in the string is indexed in the previous table. Each character
1564 * in the string is indexed in this table, and the value found there has the
1565 * value form the first table subtracted. The result must be on the range
1568 * For example, the string "wzyx" will get X from the first table. Each of
1569 * the charcaters will get X+3, X+2, X+1, and X+0 from this table. After
1570 * subtraction, the swizzle values are { 3, 2, 1, 0 }.
1572 * The string "wzrg" will get X from the first table. Each of the characters
1573 * will get X+3, X+2, R+0, and R+1 from this table. After subtraction, the
1574 * swizzle values are { 3, 2, 4, 5 }. Since 4 and 5 are outside the range
1575 * [0,3], the error is detected.
1577 static const unsigned char idx_map
[26] = {
1578 /* a b c d e f g h i j k l m */
1579 R
+3, R
+2, 0, 0, 0, 0, R
+1, 0, 0, 0, 0, 0, 0,
1580 /* n o p q r s t u v w x y z */
1581 0, 0, S
+2, S
+3, R
+0, S
+0, S
+1, 0, 0, X
+3, X
+0, X
+1, X
+2
1584 int swiz_idx
[4] = { 0, 0, 0, 0 };
1588 /* Validate the first character in the swizzle string and look up the base
1589 * index value as described above.
1591 if ((str
[0] < 'a') || (str
[0] > 'z'))
1594 const unsigned base
= base_idx
[str
[0] - 'a'];
1597 for (i
= 0; (i
< 4) && (str
[i
] != '\0'); i
++) {
1598 /* Validate the next character, and, as described above, convert it to a
1601 if ((str
[i
] < 'a') || (str
[i
] > 'z'))
1604 swiz_idx
[i
] = idx_map
[str
[i
] - 'a'] - base
;
1605 if ((swiz_idx
[i
] < 0) || (swiz_idx
[i
] >= (int) vector_length
))
1612 return new(ctx
) ir_swizzle(val
, swiz_idx
[0], swiz_idx
[1], swiz_idx
[2],
1622 ir_swizzle::variable_referenced() const
1624 return this->val
->variable_referenced();
1628 bool ir_variable::temporaries_allocate_names
= false;
1630 const char ir_variable::tmp_name
[] = "compiler_temp";
1632 ir_variable::ir_variable(const struct glsl_type
*type
, const char *name
,
1633 ir_variable_mode mode
)
1634 : ir_instruction(ir_type_variable
)
1638 if (mode
== ir_var_temporary
&& !ir_variable::temporaries_allocate_names
)
1641 /* The ir_variable clone method may call this constructor with name set to
1645 || mode
== ir_var_temporary
1646 || mode
== ir_var_function_in
1647 || mode
== ir_var_function_out
1648 || mode
== ir_var_function_inout
);
1649 assert(name
!= ir_variable::tmp_name
1650 || mode
== ir_var_temporary
);
1651 if (mode
== ir_var_temporary
1652 && (name
== NULL
|| name
== ir_variable::tmp_name
)) {
1653 this->name
= ir_variable::tmp_name
;
1655 this->name
= ralloc_strdup(this, name
);
1658 this->u
.max_ifc_array_access
= NULL
;
1660 this->data
.explicit_location
= false;
1661 this->data
.has_initializer
= false;
1662 this->data
.location
= -1;
1663 this->data
.location_frac
= 0;
1664 this->data
.binding
= 0;
1665 this->data
.warn_extension_index
= 0;
1666 this->constant_value
= NULL
;
1667 this->constant_initializer
= NULL
;
1668 this->data
.origin_upper_left
= false;
1669 this->data
.pixel_center_integer
= false;
1670 this->data
.depth_layout
= ir_depth_layout_none
;
1671 this->data
.used
= false;
1672 this->data
.always_active_io
= false;
1673 this->data
.read_only
= false;
1674 this->data
.centroid
= false;
1675 this->data
.sample
= false;
1676 this->data
.patch
= false;
1677 this->data
.invariant
= false;
1678 this->data
.how_declared
= ir_var_declared_normally
;
1679 this->data
.mode
= mode
;
1680 this->data
.interpolation
= INTERP_QUALIFIER_NONE
;
1681 this->data
.max_array_access
= 0;
1682 this->data
.atomic
.offset
= 0;
1683 this->data
.precision
= GLSL_PRECISION_NONE
;
1684 this->data
.image_read_only
= false;
1685 this->data
.image_write_only
= false;
1686 this->data
.image_coherent
= false;
1687 this->data
.image_volatile
= false;
1688 this->data
.image_restrict
= false;
1689 this->data
.from_ssbo_unsized_array
= false;
1692 if (type
->base_type
== GLSL_TYPE_SAMPLER
)
1693 this->data
.read_only
= true;
1695 if (type
->is_interface())
1696 this->init_interface_type(type
);
1697 else if (type
->without_array()->is_interface())
1698 this->init_interface_type(type
->without_array());
1704 interpolation_string(unsigned interpolation
)
1706 switch (interpolation
) {
1707 case INTERP_QUALIFIER_NONE
: return "no";
1708 case INTERP_QUALIFIER_SMOOTH
: return "smooth";
1709 case INTERP_QUALIFIER_FLAT
: return "flat";
1710 case INTERP_QUALIFIER_NOPERSPECTIVE
: return "noperspective";
1713 assert(!"Should not get here.");
1718 glsl_interp_qualifier
1719 ir_variable::determine_interpolation_mode(bool flat_shade
)
1721 if (this->data
.interpolation
!= INTERP_QUALIFIER_NONE
)
1722 return (glsl_interp_qualifier
) this->data
.interpolation
;
1723 int location
= this->data
.location
;
1725 location
== VARYING_SLOT_COL0
|| location
== VARYING_SLOT_COL1
;
1726 if (flat_shade
&& is_gl_Color
)
1727 return INTERP_QUALIFIER_FLAT
;
1729 return INTERP_QUALIFIER_SMOOTH
;
1732 const char *const ir_variable::warn_extension_table
[] = {
1734 "GL_ARB_shader_stencil_export",
1735 "GL_AMD_shader_stencil_export",
1739 ir_variable::enable_extension_warning(const char *extension
)
1741 for (unsigned i
= 0; i
< ARRAY_SIZE(warn_extension_table
); i
++) {
1742 if (strcmp(warn_extension_table
[i
], extension
) == 0) {
1743 this->data
.warn_extension_index
= i
;
1748 assert(!"Should not get here.");
1749 this->data
.warn_extension_index
= 0;
1753 ir_variable::get_extension_warning() const
1755 return this->data
.warn_extension_index
== 0
1756 ? NULL
: warn_extension_table
[this->data
.warn_extension_index
];
1759 ir_function_signature::ir_function_signature(const glsl_type
*return_type
,
1760 builtin_available_predicate b
)
1761 : ir_instruction(ir_type_function_signature
),
1762 return_type(return_type
), is_defined(false), is_intrinsic(false),
1763 builtin_avail(b
), _function(NULL
)
1765 this->origin
= NULL
;
1770 ir_function_signature::is_builtin() const
1772 return builtin_avail
!= NULL
;
1777 ir_function_signature::is_builtin_available(const _mesa_glsl_parse_state
*state
) const
1779 /* We can't call the predicate without a state pointer, so just say that
1780 * the signature is available. At compile time, we need the filtering,
1781 * but also receive a valid state pointer. At link time, we're resolving
1782 * imported built-in prototypes to their definitions, which will always
1783 * be an exact match. So we can skip the filtering.
1788 assert(builtin_avail
!= NULL
);
1789 return builtin_avail(state
);
1794 modes_match(unsigned a
, unsigned b
)
1799 /* Accept "in" vs. "const in" */
1800 if ((a
== ir_var_const_in
&& b
== ir_var_function_in
) ||
1801 (b
== ir_var_const_in
&& a
== ir_var_function_in
))
1809 ir_function_signature::qualifiers_match(exec_list
*params
)
1811 /* check that the qualifiers match. */
1812 foreach_two_lists(a_node
, &this->parameters
, b_node
, params
) {
1813 ir_variable
*a
= (ir_variable
*) a_node
;
1814 ir_variable
*b
= (ir_variable
*) b_node
;
1816 if (a
->data
.read_only
!= b
->data
.read_only
||
1817 !modes_match(a
->data
.mode
, b
->data
.mode
) ||
1818 a
->data
.interpolation
!= b
->data
.interpolation
||
1819 a
->data
.centroid
!= b
->data
.centroid
||
1820 a
->data
.sample
!= b
->data
.sample
||
1821 a
->data
.patch
!= b
->data
.patch
||
1822 a
->data
.image_read_only
!= b
->data
.image_read_only
||
1823 a
->data
.image_write_only
!= b
->data
.image_write_only
||
1824 a
->data
.image_coherent
!= b
->data
.image_coherent
||
1825 a
->data
.image_volatile
!= b
->data
.image_volatile
||
1826 a
->data
.image_restrict
!= b
->data
.image_restrict
) {
1828 /* parameter a's qualifiers don't match */
1837 ir_function_signature::replace_parameters(exec_list
*new_params
)
1839 /* Destroy all of the previous parameter information. If the previous
1840 * parameter information comes from the function prototype, it may either
1841 * specify incorrect parameter names or not have names at all.
1843 new_params
->move_nodes_to(¶meters
);
1847 ir_function::ir_function(const char *name
)
1848 : ir_instruction(ir_type_function
)
1850 this->subroutine_index
= -1;
1851 this->name
= ralloc_strdup(this, name
);
1856 ir_function::has_user_signature()
1858 foreach_in_list(ir_function_signature
, sig
, &this->signatures
) {
1859 if (!sig
->is_builtin())
1867 ir_rvalue::error_value(void *mem_ctx
)
1869 ir_rvalue
*v
= new(mem_ctx
) ir_rvalue(ir_type_unset
);
1871 v
->type
= glsl_type::error_type
;
1877 visit_exec_list(exec_list
*list
, ir_visitor
*visitor
)
1879 foreach_in_list_safe(ir_instruction
, node
, list
) {
1880 node
->accept(visitor
);
1886 steal_memory(ir_instruction
*ir
, void *new_ctx
)
1888 ir_variable
*var
= ir
->as_variable();
1889 ir_function
*fn
= ir
->as_function();
1890 ir_constant
*constant
= ir
->as_constant();
1891 if (var
!= NULL
&& var
->constant_value
!= NULL
)
1892 steal_memory(var
->constant_value
, ir
);
1894 if (var
!= NULL
&& var
->constant_initializer
!= NULL
)
1895 steal_memory(var
->constant_initializer
, ir
);
1897 if (fn
!= NULL
&& fn
->subroutine_types
)
1898 ralloc_steal(new_ctx
, fn
->subroutine_types
);
1900 /* The components of aggregate constants are not visited by the normal
1901 * visitor, so steal their values by hand.
1903 if (constant
!= NULL
) {
1904 if (constant
->type
->is_record()) {
1905 foreach_in_list(ir_constant
, field
, &constant
->components
) {
1906 steal_memory(field
, ir
);
1908 } else if (constant
->type
->is_array()) {
1909 for (unsigned int i
= 0; i
< constant
->type
->length
; i
++) {
1910 steal_memory(constant
->array_elements
[i
], ir
);
1915 ralloc_steal(new_ctx
, ir
);
1920 reparent_ir(exec_list
*list
, void *mem_ctx
)
1922 foreach_in_list(ir_instruction
, node
, list
) {
1923 visit_tree(node
, steal_memory
, mem_ctx
);
1929 try_min_one(ir_rvalue
*ir
)
1931 ir_expression
*expr
= ir
->as_expression();
1933 if (!expr
|| expr
->operation
!= ir_binop_min
)
1936 if (expr
->operands
[0]->is_one())
1937 return expr
->operands
[1];
1939 if (expr
->operands
[1]->is_one())
1940 return expr
->operands
[0];
1946 try_max_zero(ir_rvalue
*ir
)
1948 ir_expression
*expr
= ir
->as_expression();
1950 if (!expr
|| expr
->operation
!= ir_binop_max
)
1953 if (expr
->operands
[0]->is_zero())
1954 return expr
->operands
[1];
1956 if (expr
->operands
[1]->is_zero())
1957 return expr
->operands
[0];
1963 ir_rvalue::as_rvalue_to_saturate()
1965 ir_expression
*expr
= this->as_expression();
1970 ir_rvalue
*max_zero
= try_max_zero(expr
);
1972 return try_min_one(max_zero
);
1974 ir_rvalue
*min_one
= try_min_one(expr
);
1976 return try_max_zero(min_one
);
1985 vertices_per_prim(GLenum prim
)
1994 case GL_LINES_ADJACENCY
:
1996 case GL_TRIANGLES_ADJACENCY
:
1999 assert(!"Bad primitive");
2005 * Generate a string describing the mode of a variable
2008 mode_string(const ir_variable
*var
)
2010 switch (var
->data
.mode
) {
2012 return (var
->data
.read_only
) ? "global constant" : "global variable";
2014 case ir_var_uniform
:
2017 case ir_var_shader_storage
:
2020 case ir_var_shader_in
:
2021 return "shader input";
2023 case ir_var_shader_out
:
2024 return "shader output";
2026 case ir_var_function_in
:
2027 case ir_var_const_in
:
2028 return "function input";
2030 case ir_var_function_out
:
2031 return "function output";
2033 case ir_var_function_inout
:
2034 return "function inout";
2036 case ir_var_system_value
:
2037 return "shader input";
2039 case ir_var_temporary
:
2040 return "compiler temporary";
2042 case ir_var_mode_count
:
2046 assert(!"Should not get here.");
2047 return "invalid variable";