2 * Copyright © 2010 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 #include "main/core.h" /* for MAX2 */
26 #include "compiler/glsl_types.h"
28 ir_rvalue::ir_rvalue(enum ir_node_type t
)
31 this->type
= glsl_type::error_type
;
34 bool ir_rvalue::is_zero() const
39 bool ir_rvalue::is_one() const
44 bool ir_rvalue::is_negative_one() const
50 * Modify the swizzle make to move one component to another
52 * \param m IR swizzle to be modified
53 * \param from Component in the RHS that is to be swizzled
54 * \param to Desired swizzle location of \c from
57 update_rhs_swizzle(ir_swizzle_mask
&m
, unsigned from
, unsigned to
)
60 case 0: m
.x
= from
; break;
61 case 1: m
.y
= from
; break;
62 case 2: m
.z
= from
; break;
63 case 3: m
.w
= from
; break;
64 default: assert(!"Should not get here.");
69 ir_assignment::set_lhs(ir_rvalue
*lhs
)
72 bool swizzled
= false;
75 ir_swizzle
*swiz
= lhs
->as_swizzle();
80 unsigned write_mask
= 0;
81 ir_swizzle_mask rhs_swiz
= { 0, 0, 0, 0, 0, 0 };
83 for (unsigned i
= 0; i
< swiz
->mask
.num_components
; i
++) {
87 case 0: c
= swiz
->mask
.x
; break;
88 case 1: c
= swiz
->mask
.y
; break;
89 case 2: c
= swiz
->mask
.z
; break;
90 case 3: c
= swiz
->mask
.w
; break;
91 default: assert(!"Should not get here.");
94 write_mask
|= (((this->write_mask
>> i
) & 1) << c
);
95 update_rhs_swizzle(rhs_swiz
, i
, c
);
96 rhs_swiz
.num_components
= swiz
->val
->type
->vector_elements
;
99 this->write_mask
= write_mask
;
102 this->rhs
= new(mem_ctx
) ir_swizzle(this->rhs
, rhs_swiz
);
107 /* Now, RHS channels line up with the LHS writemask. Collapse it
108 * to just the channels that will be written.
110 ir_swizzle_mask rhs_swiz
= { 0, 0, 0, 0, 0, 0 };
112 for (int i
= 0; i
< 4; i
++) {
113 if (write_mask
& (1 << i
))
114 update_rhs_swizzle(rhs_swiz
, i
, rhs_chan
++);
116 rhs_swiz
.num_components
= rhs_chan
;
117 this->rhs
= new(mem_ctx
) ir_swizzle(this->rhs
, rhs_swiz
);
120 assert((lhs
== NULL
) || lhs
->as_dereference());
122 this->lhs
= (ir_dereference
*) lhs
;
126 ir_assignment::whole_variable_written()
128 ir_variable
*v
= this->lhs
->whole_variable_referenced();
133 if (v
->type
->is_scalar())
136 if (v
->type
->is_vector()) {
137 const unsigned mask
= (1U << v
->type
->vector_elements
) - 1;
139 if (mask
!= this->write_mask
)
143 /* Either all the vector components are assigned or the variable is some
144 * composite type (and the whole thing is assigned.
149 ir_assignment::ir_assignment(ir_dereference
*lhs
, ir_rvalue
*rhs
,
150 ir_rvalue
*condition
, unsigned write_mask
)
151 : ir_instruction(ir_type_assignment
)
153 this->condition
= condition
;
156 this->write_mask
= write_mask
;
158 if (lhs
->type
->is_scalar() || lhs
->type
->is_vector()) {
159 int lhs_components
= 0;
160 for (int i
= 0; i
< 4; i
++) {
161 if (write_mask
& (1 << i
))
165 assert(lhs_components
== this->rhs
->type
->vector_elements
);
169 ir_assignment::ir_assignment(ir_rvalue
*lhs
, ir_rvalue
*rhs
,
170 ir_rvalue
*condition
)
171 : ir_instruction(ir_type_assignment
)
173 this->condition
= condition
;
176 /* If the RHS is a vector type, assume that all components of the vector
177 * type are being written to the LHS. The write mask comes from the RHS
178 * because we can have a case where the LHS is a vec4 and the RHS is a
179 * vec3. In that case, the assignment is:
181 * (assign (...) (xyz) (var_ref lhs) (var_ref rhs))
183 if (rhs
->type
->is_vector())
184 this->write_mask
= (1U << rhs
->type
->vector_elements
) - 1;
185 else if (rhs
->type
->is_scalar())
186 this->write_mask
= 1;
188 this->write_mask
= 0;
193 ir_expression::ir_expression(int op
, const struct glsl_type
*type
,
194 ir_rvalue
*op0
, ir_rvalue
*op1
,
195 ir_rvalue
*op2
, ir_rvalue
*op3
)
196 : ir_rvalue(ir_type_expression
)
199 this->operation
= ir_expression_operation(op
);
200 this->operands
[0] = op0
;
201 this->operands
[1] = op1
;
202 this->operands
[2] = op2
;
203 this->operands
[3] = op3
;
205 int num_operands
= get_num_operands(this->operation
);
206 for (int i
= num_operands
; i
< 4; i
++) {
207 assert(this->operands
[i
] == NULL
);
212 ir_expression::ir_expression(int op
, ir_rvalue
*op0
)
213 : ir_rvalue(ir_type_expression
)
215 this->operation
= ir_expression_operation(op
);
216 this->operands
[0] = op0
;
217 this->operands
[1] = NULL
;
218 this->operands
[2] = NULL
;
219 this->operands
[3] = NULL
;
221 assert(op
<= ir_last_unop
);
223 switch (this->operation
) {
224 case ir_unop_bit_not
:
225 case ir_unop_logic_not
:
240 case ir_unop_round_even
:
244 case ir_unop_dFdx_coarse
:
245 case ir_unop_dFdx_fine
:
247 case ir_unop_dFdy_coarse
:
248 case ir_unop_dFdy_fine
:
249 case ir_unop_bitfield_reverse
:
250 case ir_unop_interpolate_at_centroid
:
251 case ir_unop_saturate
:
252 this->type
= op0
->type
;
259 case ir_unop_bitcast_f2i
:
260 case ir_unop_bit_count
:
261 case ir_unop_find_msb
:
262 case ir_unop_find_lsb
:
263 case ir_unop_subroutine_to_int
:
264 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
,
265 op0
->type
->vector_elements
, 1);
272 case ir_unop_bitcast_i2f
:
273 case ir_unop_bitcast_u2f
:
274 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
,
275 op0
->type
->vector_elements
, 1);
281 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
,
282 op0
->type
->vector_elements
, 1);
288 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
,
289 op0
->type
->vector_elements
, 1);
295 case ir_unop_bitcast_f2u
:
296 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT
,
297 op0
->type
->vector_elements
, 1);
301 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
;
310 case ir_unop_pack_snorm_2x16
:
311 case ir_unop_pack_snorm_4x8
:
312 case ir_unop_pack_unorm_2x16
:
313 case ir_unop_pack_unorm_4x8
:
314 case ir_unop_pack_half_2x16
:
315 this->type
= glsl_type::uint_type
;
318 case ir_unop_pack_double_2x32
:
319 this->type
= glsl_type::double_type
;
322 case ir_unop_unpack_snorm_2x16
:
323 case ir_unop_unpack_unorm_2x16
:
324 case ir_unop_unpack_half_2x16
:
325 this->type
= glsl_type::vec2_type
;
328 case ir_unop_unpack_snorm_4x8
:
329 case ir_unop_unpack_unorm_4x8
:
330 this->type
= glsl_type::vec4_type
;
333 case ir_unop_frexp_sig
:
334 this->type
= op0
->type
;
336 case ir_unop_frexp_exp
:
337 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
,
338 op0
->type
->vector_elements
, 1);
341 case ir_unop_get_buffer_size
:
342 case ir_unop_ssbo_unsized_array_length
:
343 this->type
= glsl_type::int_type
;
347 assert(!"not reached: missing automatic type setup for ir_expression");
348 this->type
= op0
->type
;
353 ir_expression::ir_expression(int op
, ir_rvalue
*op0
, ir_rvalue
*op1
)
354 : ir_rvalue(ir_type_expression
)
356 this->operation
= ir_expression_operation(op
);
357 this->operands
[0] = op0
;
358 this->operands
[1] = op1
;
359 this->operands
[2] = NULL
;
360 this->operands
[3] = NULL
;
362 assert(op
> ir_last_unop
);
364 switch (this->operation
) {
365 case ir_binop_all_equal
:
366 case ir_binop_any_nequal
:
367 this->type
= glsl_type::bool_type
;
378 if (op0
->type
->is_scalar()) {
379 this->type
= op1
->type
;
380 } else if (op1
->type
->is_scalar()) {
381 this->type
= op0
->type
;
383 if (this->operation
== ir_binop_mul
) {
384 this->type
= glsl_type::get_mul_type(op0
->type
, op1
->type
);
386 assert(op0
->type
== op1
->type
);
387 this->type
= op0
->type
;
392 case ir_binop_logic_and
:
393 case ir_binop_logic_xor
:
394 case ir_binop_logic_or
:
395 case ir_binop_bit_and
:
396 case ir_binop_bit_xor
:
397 case ir_binop_bit_or
:
398 assert(!op0
->type
->is_matrix());
399 assert(!op1
->type
->is_matrix());
400 if (op0
->type
->is_scalar()) {
401 this->type
= op1
->type
;
402 } else if (op1
->type
->is_scalar()) {
403 this->type
= op0
->type
;
405 assert(op0
->type
->vector_elements
== op1
->type
->vector_elements
);
406 this->type
= op0
->type
;
411 case ir_binop_nequal
:
412 case ir_binop_lequal
:
413 case ir_binop_gequal
:
415 case ir_binop_greater
:
416 assert(op0
->type
== op1
->type
);
417 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
,
418 op0
->type
->vector_elements
, 1);
422 this->type
= op0
->type
->get_base_type();
425 case ir_binop_pack_half_2x16_split
:
426 this->type
= glsl_type::uint_type
;
429 case ir_binop_imul_high
:
431 case ir_binop_borrow
:
432 case ir_binop_lshift
:
433 case ir_binop_rshift
:
435 case ir_binop_interpolate_at_offset
:
436 case ir_binop_interpolate_at_sample
:
437 this->type
= op0
->type
;
440 case ir_binop_vector_extract
:
441 this->type
= op0
->type
->get_scalar_type();
445 assert(!"not reached: missing automatic type setup for ir_expression");
446 this->type
= glsl_type::float_type
;
450 ir_expression::ir_expression(int op
, ir_rvalue
*op0
, ir_rvalue
*op1
,
452 : ir_rvalue(ir_type_expression
)
454 this->operation
= ir_expression_operation(op
);
455 this->operands
[0] = op0
;
456 this->operands
[1] = op1
;
457 this->operands
[2] = op2
;
458 this->operands
[3] = NULL
;
460 assert(op
> ir_last_binop
&& op
<= ir_last_triop
);
462 switch (this->operation
) {
465 case ir_triop_bitfield_extract
:
466 case ir_triop_vector_insert
:
467 this->type
= op0
->type
;
471 this->type
= op1
->type
;
475 assert(!"not reached: missing automatic type setup for ir_expression");
476 this->type
= glsl_type::float_type
;
481 ir_expression::get_num_operands(ir_expression_operation op
)
483 assert(op
<= ir_last_opcode
);
485 if (op
<= ir_last_unop
)
488 if (op
<= ir_last_binop
)
491 if (op
<= ir_last_triop
)
494 if (op
<= ir_last_quadop
)
501 static const char *const operator_strs
[] = {
558 "unpackHalf2x16_split_x",
559 "unpackHalf2x16_split_y",
571 "interpolate_at_centroid",
573 "ssbo_unsized_array_length",
602 "packHalf2x16_split",
606 "interpolate_at_offset",
607 "interpolate_at_sample",
617 const char *ir_expression::operator_string(ir_expression_operation op
)
619 assert((unsigned int) op
< ARRAY_SIZE(operator_strs
));
620 assert(ARRAY_SIZE(operator_strs
) == (ir_quadop_vector
+ 1));
621 return operator_strs
[op
];
624 const char *ir_expression::operator_string()
626 return operator_string(this->operation
);
630 depth_layout_string(ir_depth_layout layout
)
633 case ir_depth_layout_none
: return "";
634 case ir_depth_layout_any
: return "depth_any";
635 case ir_depth_layout_greater
: return "depth_greater";
636 case ir_depth_layout_less
: return "depth_less";
637 case ir_depth_layout_unchanged
: return "depth_unchanged";
645 ir_expression_operation
646 ir_expression::get_operator(const char *str
)
648 const int operator_count
= sizeof(operator_strs
) / sizeof(operator_strs
[0]);
649 for (int op
= 0; op
< operator_count
; op
++) {
650 if (strcmp(str
, operator_strs
[op
]) == 0)
651 return (ir_expression_operation
) op
;
653 return (ir_expression_operation
) -1;
657 ir_expression::variable_referenced() const
660 case ir_binop_vector_extract
:
661 case ir_triop_vector_insert
:
662 /* We get these for things like a[0] where a is a vector type. In these
663 * cases we want variable_referenced() to return the actual vector
664 * variable this is wrapping.
666 return operands
[0]->variable_referenced();
668 return ir_rvalue::variable_referenced();
672 ir_constant::ir_constant()
673 : ir_rvalue(ir_type_constant
)
677 ir_constant::ir_constant(const struct glsl_type
*type
,
678 const ir_constant_data
*data
)
679 : ir_rvalue(ir_type_constant
)
681 assert((type
->base_type
>= GLSL_TYPE_UINT
)
682 && (type
->base_type
<= GLSL_TYPE_BOOL
));
685 memcpy(& this->value
, data
, sizeof(this->value
));
688 ir_constant::ir_constant(float f
, unsigned vector_elements
)
689 : ir_rvalue(ir_type_constant
)
691 assert(vector_elements
<= 4);
692 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
, vector_elements
, 1);
693 for (unsigned i
= 0; i
< vector_elements
; i
++) {
694 this->value
.f
[i
] = f
;
696 for (unsigned i
= vector_elements
; i
< 16; i
++) {
697 this->value
.f
[i
] = 0;
701 ir_constant::ir_constant(double d
, unsigned vector_elements
)
702 : ir_rvalue(ir_type_constant
)
704 assert(vector_elements
<= 4);
705 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
, vector_elements
, 1);
706 for (unsigned i
= 0; i
< vector_elements
; i
++) {
707 this->value
.d
[i
] = d
;
709 for (unsigned i
= vector_elements
; i
< 16; i
++) {
710 this->value
.d
[i
] = 0.0;
714 ir_constant::ir_constant(unsigned int u
, unsigned vector_elements
)
715 : ir_rvalue(ir_type_constant
)
717 assert(vector_elements
<= 4);
718 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT
, vector_elements
, 1);
719 for (unsigned i
= 0; i
< vector_elements
; i
++) {
720 this->value
.u
[i
] = u
;
722 for (unsigned i
= vector_elements
; i
< 16; i
++) {
723 this->value
.u
[i
] = 0;
727 ir_constant::ir_constant(int integer
, unsigned vector_elements
)
728 : ir_rvalue(ir_type_constant
)
730 assert(vector_elements
<= 4);
731 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
, vector_elements
, 1);
732 for (unsigned i
= 0; i
< vector_elements
; i
++) {
733 this->value
.i
[i
] = integer
;
735 for (unsigned i
= vector_elements
; i
< 16; i
++) {
736 this->value
.i
[i
] = 0;
740 ir_constant::ir_constant(bool b
, unsigned vector_elements
)
741 : ir_rvalue(ir_type_constant
)
743 assert(vector_elements
<= 4);
744 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
, vector_elements
, 1);
745 for (unsigned i
= 0; i
< vector_elements
; i
++) {
746 this->value
.b
[i
] = b
;
748 for (unsigned i
= vector_elements
; i
< 16; i
++) {
749 this->value
.b
[i
] = false;
753 ir_constant::ir_constant(const ir_constant
*c
, unsigned i
)
754 : ir_rvalue(ir_type_constant
)
756 this->type
= c
->type
->get_base_type();
758 switch (this->type
->base_type
) {
759 case GLSL_TYPE_UINT
: this->value
.u
[0] = c
->value
.u
[i
]; break;
760 case GLSL_TYPE_INT
: this->value
.i
[0] = c
->value
.i
[i
]; break;
761 case GLSL_TYPE_FLOAT
: this->value
.f
[0] = c
->value
.f
[i
]; break;
762 case GLSL_TYPE_BOOL
: this->value
.b
[0] = c
->value
.b
[i
]; break;
763 case GLSL_TYPE_DOUBLE
: this->value
.d
[0] = c
->value
.d
[i
]; break;
764 default: assert(!"Should not get here."); break;
768 ir_constant::ir_constant(const struct glsl_type
*type
, exec_list
*value_list
)
769 : ir_rvalue(ir_type_constant
)
773 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
774 || type
->is_record() || type
->is_array());
776 if (type
->is_array()) {
777 this->array_elements
= ralloc_array(this, ir_constant
*, type
->length
);
779 foreach_in_list(ir_constant
, value
, value_list
) {
780 assert(value
->as_constant() != NULL
);
782 this->array_elements
[i
++] = value
;
787 /* If the constant is a record, the types of each of the entries in
788 * value_list must be a 1-for-1 match with the structure components. Each
789 * entry must also be a constant. Just move the nodes from the value_list
790 * to the list in the ir_constant.
792 /* FINISHME: Should there be some type checking and / or assertions here? */
793 /* FINISHME: Should the new constant take ownership of the nodes from
794 * FINISHME: value_list, or should it make copies?
796 if (type
->is_record()) {
797 value_list
->move_nodes_to(& this->components
);
801 for (unsigned i
= 0; i
< 16; i
++) {
802 this->value
.u
[i
] = 0;
805 ir_constant
*value
= (ir_constant
*) (value_list
->head
);
807 /* Constructors with exactly one scalar argument are special for vectors
808 * and matrices. For vectors, the scalar value is replicated to fill all
809 * the components. For matrices, the scalar fills the components of the
810 * diagonal while the rest is filled with 0.
812 if (value
->type
->is_scalar() && value
->next
->is_tail_sentinel()) {
813 if (type
->is_matrix()) {
814 /* Matrix - fill diagonal (rest is already set to 0) */
815 assert(type
->base_type
== GLSL_TYPE_FLOAT
||
816 type
->base_type
== GLSL_TYPE_DOUBLE
);
817 for (unsigned i
= 0; i
< type
->matrix_columns
; i
++) {
818 if (type
->base_type
== GLSL_TYPE_FLOAT
)
819 this->value
.f
[i
* type
->vector_elements
+ i
] =
822 this->value
.d
[i
* type
->vector_elements
+ i
] =
826 /* Vector or scalar - fill all components */
827 switch (type
->base_type
) {
830 for (unsigned i
= 0; i
< type
->components(); i
++)
831 this->value
.u
[i
] = value
->value
.u
[0];
833 case GLSL_TYPE_FLOAT
:
834 for (unsigned i
= 0; i
< type
->components(); i
++)
835 this->value
.f
[i
] = value
->value
.f
[0];
837 case GLSL_TYPE_DOUBLE
:
838 for (unsigned i
= 0; i
< type
->components(); i
++)
839 this->value
.d
[i
] = value
->value
.d
[0];
842 for (unsigned i
= 0; i
< type
->components(); i
++)
843 this->value
.b
[i
] = value
->value
.b
[0];
846 assert(!"Should not get here.");
853 if (type
->is_matrix() && value
->type
->is_matrix()) {
854 assert(value
->next
->is_tail_sentinel());
856 /* From section 5.4.2 of the GLSL 1.20 spec:
857 * "If a matrix is constructed from a matrix, then each component
858 * (column i, row j) in the result that has a corresponding component
859 * (column i, row j) in the argument will be initialized from there."
861 unsigned cols
= MIN2(type
->matrix_columns
, value
->type
->matrix_columns
);
862 unsigned rows
= MIN2(type
->vector_elements
, value
->type
->vector_elements
);
863 for (unsigned i
= 0; i
< cols
; i
++) {
864 for (unsigned j
= 0; j
< rows
; j
++) {
865 const unsigned src
= i
* value
->type
->vector_elements
+ j
;
866 const unsigned dst
= i
* type
->vector_elements
+ j
;
867 this->value
.f
[dst
] = value
->value
.f
[src
];
871 /* "All other components will be initialized to the identity matrix." */
872 for (unsigned i
= cols
; i
< type
->matrix_columns
; i
++)
873 this->value
.f
[i
* type
->vector_elements
+ i
] = 1.0;
878 /* Use each component from each entry in the value_list to initialize one
879 * component of the constant being constructed.
881 for (unsigned i
= 0; i
< type
->components(); /* empty */) {
882 assert(value
->as_constant() != NULL
);
883 assert(!value
->is_tail_sentinel());
885 for (unsigned j
= 0; j
< value
->type
->components(); j
++) {
886 switch (type
->base_type
) {
888 this->value
.u
[i
] = value
->get_uint_component(j
);
891 this->value
.i
[i
] = value
->get_int_component(j
);
893 case GLSL_TYPE_FLOAT
:
894 this->value
.f
[i
] = value
->get_float_component(j
);
897 this->value
.b
[i
] = value
->get_bool_component(j
);
899 case GLSL_TYPE_DOUBLE
:
900 this->value
.d
[i
] = value
->get_double_component(j
);
903 /* FINISHME: What to do? Exceptions are not the answer.
909 if (i
>= type
->components())
913 value
= (ir_constant
*) value
->next
;
918 ir_constant::zero(void *mem_ctx
, const glsl_type
*type
)
920 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
921 || type
->is_record() || type
->is_array());
923 ir_constant
*c
= new(mem_ctx
) ir_constant
;
925 memset(&c
->value
, 0, sizeof(c
->value
));
927 if (type
->is_array()) {
928 c
->array_elements
= ralloc_array(c
, ir_constant
*, type
->length
);
930 for (unsigned i
= 0; i
< type
->length
; i
++)
931 c
->array_elements
[i
] = ir_constant::zero(c
, type
->fields
.array
);
934 if (type
->is_record()) {
935 for (unsigned i
= 0; i
< type
->length
; i
++) {
936 ir_constant
*comp
= ir_constant::zero(mem_ctx
, type
->fields
.structure
[i
].type
);
937 c
->components
.push_tail(comp
);
945 ir_constant::get_bool_component(unsigned i
) const
947 switch (this->type
->base_type
) {
948 case GLSL_TYPE_UINT
: return this->value
.u
[i
] != 0;
949 case GLSL_TYPE_INT
: return this->value
.i
[i
] != 0;
950 case GLSL_TYPE_FLOAT
: return ((int)this->value
.f
[i
]) != 0;
951 case GLSL_TYPE_BOOL
: return this->value
.b
[i
];
952 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
] != 0.0;
953 default: assert(!"Should not get here."); break;
956 /* Must return something to make the compiler happy. This is clearly an
963 ir_constant::get_float_component(unsigned i
) const
965 switch (this->type
->base_type
) {
966 case GLSL_TYPE_UINT
: return (float) this->value
.u
[i
];
967 case GLSL_TYPE_INT
: return (float) this->value
.i
[i
];
968 case GLSL_TYPE_FLOAT
: return this->value
.f
[i
];
969 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0f
: 0.0f
;
970 case GLSL_TYPE_DOUBLE
: return (float) this->value
.d
[i
];
971 default: assert(!"Should not get here."); break;
974 /* Must return something to make the compiler happy. This is clearly an
981 ir_constant::get_double_component(unsigned i
) const
983 switch (this->type
->base_type
) {
984 case GLSL_TYPE_UINT
: return (double) this->value
.u
[i
];
985 case GLSL_TYPE_INT
: return (double) this->value
.i
[i
];
986 case GLSL_TYPE_FLOAT
: return (double) this->value
.f
[i
];
987 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0 : 0.0;
988 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
];
989 default: assert(!"Should not get here."); break;
992 /* Must return something to make the compiler happy. This is clearly an
999 ir_constant::get_int_component(unsigned i
) const
1001 switch (this->type
->base_type
) {
1002 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1003 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1004 case GLSL_TYPE_FLOAT
: return (int) this->value
.f
[i
];
1005 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1006 case GLSL_TYPE_DOUBLE
: return (int) this->value
.d
[i
];
1007 default: assert(!"Should not get here."); break;
1010 /* Must return something to make the compiler happy. This is clearly an
1017 ir_constant::get_uint_component(unsigned i
) const
1019 switch (this->type
->base_type
) {
1020 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1021 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1022 case GLSL_TYPE_FLOAT
: return (unsigned) this->value
.f
[i
];
1023 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1024 case GLSL_TYPE_DOUBLE
: return (unsigned) this->value
.d
[i
];
1025 default: assert(!"Should not get here."); break;
1028 /* Must return something to make the compiler happy. This is clearly an
1035 ir_constant::get_array_element(unsigned i
) const
1037 assert(this->type
->is_array());
1039 /* From page 35 (page 41 of the PDF) of the GLSL 1.20 spec:
1041 * "Behavior is undefined if a shader subscripts an array with an index
1042 * less than 0 or greater than or equal to the size the array was
1045 * Most out-of-bounds accesses are removed before things could get this far.
1046 * There are cases where non-constant array index values can get constant
1051 else if (i
>= this->type
->length
)
1052 i
= this->type
->length
- 1;
1054 return array_elements
[i
];
1058 ir_constant::get_record_field(const char *name
)
1060 int idx
= this->type
->field_index(name
);
1065 if (this->components
.is_empty())
1068 exec_node
*node
= this->components
.head
;
1069 for (int i
= 0; i
< idx
; i
++) {
1072 /* If the end of the list is encountered before the element matching the
1073 * requested field is found, return NULL.
1075 if (node
->is_tail_sentinel())
1079 return (ir_constant
*) node
;
1083 ir_constant::copy_offset(ir_constant
*src
, int offset
)
1085 switch (this->type
->base_type
) {
1086 case GLSL_TYPE_UINT
:
1088 case GLSL_TYPE_FLOAT
:
1089 case GLSL_TYPE_DOUBLE
:
1090 case GLSL_TYPE_BOOL
: {
1091 unsigned int size
= src
->type
->components();
1092 assert (size
<= this->type
->components() - offset
);
1093 for (unsigned int i
=0; i
<size
; i
++) {
1094 switch (this->type
->base_type
) {
1095 case GLSL_TYPE_UINT
:
1096 value
.u
[i
+offset
] = src
->get_uint_component(i
);
1099 value
.i
[i
+offset
] = src
->get_int_component(i
);
1101 case GLSL_TYPE_FLOAT
:
1102 value
.f
[i
+offset
] = src
->get_float_component(i
);
1104 case GLSL_TYPE_BOOL
:
1105 value
.b
[i
+offset
] = src
->get_bool_component(i
);
1107 case GLSL_TYPE_DOUBLE
:
1108 value
.d
[i
+offset
] = src
->get_double_component(i
);
1110 default: // Shut up the compiler
1117 case GLSL_TYPE_STRUCT
: {
1118 assert (src
->type
== this->type
);
1119 this->components
.make_empty();
1120 foreach_in_list(ir_constant
, orig
, &src
->components
) {
1121 this->components
.push_tail(orig
->clone(this, NULL
));
1126 case GLSL_TYPE_ARRAY
: {
1127 assert (src
->type
== this->type
);
1128 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1129 this->array_elements
[i
] = src
->array_elements
[i
]->clone(this, NULL
);
1135 assert(!"Should not get here.");
1141 ir_constant::copy_masked_offset(ir_constant
*src
, int offset
, unsigned int mask
)
1143 assert (!type
->is_array() && !type
->is_record());
1145 if (!type
->is_vector() && !type
->is_matrix()) {
1151 for (int i
=0; i
<4; i
++) {
1152 if (mask
& (1 << i
)) {
1153 switch (this->type
->base_type
) {
1154 case GLSL_TYPE_UINT
:
1155 value
.u
[i
+offset
] = src
->get_uint_component(id
++);
1158 value
.i
[i
+offset
] = src
->get_int_component(id
++);
1160 case GLSL_TYPE_FLOAT
:
1161 value
.f
[i
+offset
] = src
->get_float_component(id
++);
1163 case GLSL_TYPE_BOOL
:
1164 value
.b
[i
+offset
] = src
->get_bool_component(id
++);
1166 case GLSL_TYPE_DOUBLE
:
1167 value
.d
[i
+offset
] = src
->get_double_component(id
++);
1170 assert(!"Should not get here.");
1178 ir_constant::has_value(const ir_constant
*c
) const
1180 if (this->type
!= c
->type
)
1183 if (this->type
->is_array()) {
1184 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1185 if (!this->array_elements
[i
]->has_value(c
->array_elements
[i
]))
1191 if (this->type
->base_type
== GLSL_TYPE_STRUCT
) {
1192 const exec_node
*a_node
= this->components
.head
;
1193 const exec_node
*b_node
= c
->components
.head
;
1195 while (!a_node
->is_tail_sentinel()) {
1196 assert(!b_node
->is_tail_sentinel());
1198 const ir_constant
*const a_field
= (ir_constant
*) a_node
;
1199 const ir_constant
*const b_field
= (ir_constant
*) b_node
;
1201 if (!a_field
->has_value(b_field
))
1204 a_node
= a_node
->next
;
1205 b_node
= b_node
->next
;
1211 for (unsigned i
= 0; i
< this->type
->components(); i
++) {
1212 switch (this->type
->base_type
) {
1213 case GLSL_TYPE_UINT
:
1214 if (this->value
.u
[i
] != c
->value
.u
[i
])
1218 if (this->value
.i
[i
] != c
->value
.i
[i
])
1221 case GLSL_TYPE_FLOAT
:
1222 if (this->value
.f
[i
] != c
->value
.f
[i
])
1225 case GLSL_TYPE_BOOL
:
1226 if (this->value
.b
[i
] != c
->value
.b
[i
])
1229 case GLSL_TYPE_DOUBLE
:
1230 if (this->value
.d
[i
] != c
->value
.d
[i
])
1234 assert(!"Should not get here.");
1243 ir_constant::is_value(float f
, int i
) const
1245 if (!this->type
->is_scalar() && !this->type
->is_vector())
1248 /* Only accept boolean values for 0/1. */
1249 if (int(bool(i
)) != i
&& this->type
->is_boolean())
1252 for (unsigned c
= 0; c
< this->type
->vector_elements
; c
++) {
1253 switch (this->type
->base_type
) {
1254 case GLSL_TYPE_FLOAT
:
1255 if (this->value
.f
[c
] != f
)
1259 if (this->value
.i
[c
] != i
)
1262 case GLSL_TYPE_UINT
:
1263 if (this->value
.u
[c
] != unsigned(i
))
1266 case GLSL_TYPE_BOOL
:
1267 if (this->value
.b
[c
] != bool(i
))
1270 case GLSL_TYPE_DOUBLE
:
1271 if (this->value
.d
[c
] != double(f
))
1275 /* The only other base types are structures, arrays, and samplers.
1276 * Samplers cannot be constants, and the others should have been
1277 * filtered out above.
1279 assert(!"Should not get here.");
1288 ir_constant::is_zero() const
1290 return is_value(0.0, 0);
1294 ir_constant::is_one() const
1296 return is_value(1.0, 1);
1300 ir_constant::is_negative_one() const
1302 return is_value(-1.0, -1);
1306 ir_constant::is_uint16_constant() const
1308 if (!type
->is_integer())
1311 return value
.u
[0] < (1 << 16);
1315 : ir_instruction(ir_type_loop
)
1320 ir_dereference_variable::ir_dereference_variable(ir_variable
*var
)
1321 : ir_dereference(ir_type_dereference_variable
)
1323 assert(var
!= NULL
);
1326 this->type
= var
->type
;
1330 ir_dereference_array::ir_dereference_array(ir_rvalue
*value
,
1331 ir_rvalue
*array_index
)
1332 : ir_dereference(ir_type_dereference_array
)
1334 this->array_index
= array_index
;
1335 this->set_array(value
);
1339 ir_dereference_array::ir_dereference_array(ir_variable
*var
,
1340 ir_rvalue
*array_index
)
1341 : ir_dereference(ir_type_dereference_array
)
1343 void *ctx
= ralloc_parent(var
);
1345 this->array_index
= array_index
;
1346 this->set_array(new(ctx
) ir_dereference_variable(var
));
1351 ir_dereference_array::set_array(ir_rvalue
*value
)
1353 assert(value
!= NULL
);
1355 this->array
= value
;
1357 const glsl_type
*const vt
= this->array
->type
;
1359 if (vt
->is_array()) {
1360 type
= vt
->fields
.array
;
1361 } else if (vt
->is_matrix()) {
1362 type
= vt
->column_type();
1363 } else if (vt
->is_vector()) {
1364 type
= vt
->get_base_type();
1369 ir_dereference_record::ir_dereference_record(ir_rvalue
*value
,
1371 : ir_dereference(ir_type_dereference_record
)
1373 assert(value
!= NULL
);
1375 this->record
= value
;
1376 this->field
= ralloc_strdup(this, field
);
1377 this->type
= this->record
->type
->field_type(field
);
1381 ir_dereference_record::ir_dereference_record(ir_variable
*var
,
1383 : ir_dereference(ir_type_dereference_record
)
1385 void *ctx
= ralloc_parent(var
);
1387 this->record
= new(ctx
) ir_dereference_variable(var
);
1388 this->field
= ralloc_strdup(this, field
);
1389 this->type
= this->record
->type
->field_type(field
);
1393 ir_dereference::is_lvalue() const
1395 ir_variable
*var
= this->variable_referenced();
1397 /* Every l-value derference chain eventually ends in a variable.
1399 if ((var
== NULL
) || var
->data
.read_only
)
1402 /* From section 4.1.7 of the GLSL 4.40 spec:
1404 * "Opaque variables cannot be treated as l-values; hence cannot
1405 * be used as out or inout function parameters, nor can they be
1408 if (this->type
->contains_opaque())
1415 static const char * const tex_opcode_strs
[] = { "tex", "txb", "txl", "txd", "txf", "txf_ms", "txs", "lod", "tg4", "query_levels", "texture_samples", "samples_identical" };
1417 const char *ir_texture::opcode_string()
1419 assert((unsigned int) op
< ARRAY_SIZE(tex_opcode_strs
));
1420 return tex_opcode_strs
[op
];
1424 ir_texture::get_opcode(const char *str
)
1426 const int count
= sizeof(tex_opcode_strs
) / sizeof(tex_opcode_strs
[0]);
1427 for (int op
= 0; op
< count
; op
++) {
1428 if (strcmp(str
, tex_opcode_strs
[op
]) == 0)
1429 return (ir_texture_opcode
) op
;
1431 return (ir_texture_opcode
) -1;
1436 ir_texture::set_sampler(ir_dereference
*sampler
, const glsl_type
*type
)
1438 assert(sampler
!= NULL
);
1439 assert(type
!= NULL
);
1440 this->sampler
= sampler
;
1443 if (this->op
== ir_txs
|| this->op
== ir_query_levels
||
1444 this->op
== ir_texture_samples
) {
1445 assert(type
->base_type
== GLSL_TYPE_INT
);
1446 } else if (this->op
== ir_lod
) {
1447 assert(type
->vector_elements
== 2);
1448 assert(type
->base_type
== GLSL_TYPE_FLOAT
);
1449 } else if (this->op
== ir_samples_identical
) {
1450 assert(type
== glsl_type::bool_type
);
1451 assert(sampler
->type
->base_type
== GLSL_TYPE_SAMPLER
);
1452 assert(sampler
->type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
);
1454 assert(sampler
->type
->sampler_type
== (int) type
->base_type
);
1455 if (sampler
->type
->sampler_shadow
)
1456 assert(type
->vector_elements
== 4 || type
->vector_elements
== 1);
1458 assert(type
->vector_elements
== 4);
1464 ir_swizzle::init_mask(const unsigned *comp
, unsigned count
)
1466 assert((count
>= 1) && (count
<= 4));
1468 memset(&this->mask
, 0, sizeof(this->mask
));
1469 this->mask
.num_components
= count
;
1471 unsigned dup_mask
= 0;
1474 assert(comp
[3] <= 3);
1475 dup_mask
|= (1U << comp
[3])
1476 & ((1U << comp
[0]) | (1U << comp
[1]) | (1U << comp
[2]));
1477 this->mask
.w
= comp
[3];
1480 assert(comp
[2] <= 3);
1481 dup_mask
|= (1U << comp
[2])
1482 & ((1U << comp
[0]) | (1U << comp
[1]));
1483 this->mask
.z
= comp
[2];
1486 assert(comp
[1] <= 3);
1487 dup_mask
|= (1U << comp
[1])
1488 & ((1U << comp
[0]));
1489 this->mask
.y
= comp
[1];
1492 assert(comp
[0] <= 3);
1493 this->mask
.x
= comp
[0];
1496 this->mask
.has_duplicates
= dup_mask
!= 0;
1498 /* Based on the number of elements in the swizzle and the base type
1499 * (i.e., float, int, unsigned, or bool) of the vector being swizzled,
1500 * generate the type of the resulting value.
1502 type
= glsl_type::get_instance(val
->type
->base_type
, mask
.num_components
, 1);
1505 ir_swizzle::ir_swizzle(ir_rvalue
*val
, unsigned x
, unsigned y
, unsigned z
,
1506 unsigned w
, unsigned count
)
1507 : ir_rvalue(ir_type_swizzle
), val(val
)
1509 const unsigned components
[4] = { x
, y
, z
, w
};
1510 this->init_mask(components
, count
);
1513 ir_swizzle::ir_swizzle(ir_rvalue
*val
, const unsigned *comp
,
1515 : ir_rvalue(ir_type_swizzle
), val(val
)
1517 this->init_mask(comp
, count
);
1520 ir_swizzle::ir_swizzle(ir_rvalue
*val
, ir_swizzle_mask mask
)
1521 : ir_rvalue(ir_type_swizzle
)
1525 this->type
= glsl_type::get_instance(val
->type
->base_type
,
1526 mask
.num_components
, 1);
1535 ir_swizzle::create(ir_rvalue
*val
, const char *str
, unsigned vector_length
)
1537 void *ctx
= ralloc_parent(val
);
1539 /* For each possible swizzle character, this table encodes the value in
1540 * \c idx_map that represents the 0th element of the vector. For invalid
1541 * swizzle characters (e.g., 'k'), a special value is used that will allow
1542 * detection of errors.
1544 static const unsigned char base_idx
[26] = {
1545 /* a b c d e f g h i j k l m */
1546 R
, R
, I
, I
, I
, I
, R
, I
, I
, I
, I
, I
, I
,
1547 /* n o p q r s t u v w x y z */
1548 I
, I
, S
, S
, R
, S
, S
, I
, I
, X
, X
, X
, X
1551 /* Each valid swizzle character has an entry in the previous table. This
1552 * table encodes the base index encoded in the previous table plus the actual
1553 * index of the swizzle character. When processing swizzles, the first
1554 * character in the string is indexed in the previous table. Each character
1555 * in the string is indexed in this table, and the value found there has the
1556 * value form the first table subtracted. The result must be on the range
1559 * For example, the string "wzyx" will get X from the first table. Each of
1560 * the charcaters will get X+3, X+2, X+1, and X+0 from this table. After
1561 * subtraction, the swizzle values are { 3, 2, 1, 0 }.
1563 * The string "wzrg" will get X from the first table. Each of the characters
1564 * will get X+3, X+2, R+0, and R+1 from this table. After subtraction, the
1565 * swizzle values are { 3, 2, 4, 5 }. Since 4 and 5 are outside the range
1566 * [0,3], the error is detected.
1568 static const unsigned char idx_map
[26] = {
1569 /* a b c d e f g h i j k l m */
1570 R
+3, R
+2, 0, 0, 0, 0, R
+1, 0, 0, 0, 0, 0, 0,
1571 /* n o p q r s t u v w x y z */
1572 0, 0, S
+2, S
+3, R
+0, S
+0, S
+1, 0, 0, X
+3, X
+0, X
+1, X
+2
1575 int swiz_idx
[4] = { 0, 0, 0, 0 };
1579 /* Validate the first character in the swizzle string and look up the base
1580 * index value as described above.
1582 if ((str
[0] < 'a') || (str
[0] > 'z'))
1585 const unsigned base
= base_idx
[str
[0] - 'a'];
1588 for (i
= 0; (i
< 4) && (str
[i
] != '\0'); i
++) {
1589 /* Validate the next character, and, as described above, convert it to a
1592 if ((str
[i
] < 'a') || (str
[i
] > 'z'))
1595 swiz_idx
[i
] = idx_map
[str
[i
] - 'a'] - base
;
1596 if ((swiz_idx
[i
] < 0) || (swiz_idx
[i
] >= (int) vector_length
))
1603 return new(ctx
) ir_swizzle(val
, swiz_idx
[0], swiz_idx
[1], swiz_idx
[2],
1613 ir_swizzle::variable_referenced() const
1615 return this->val
->variable_referenced();
1619 bool ir_variable::temporaries_allocate_names
= false;
1621 const char ir_variable::tmp_name
[] = "compiler_temp";
1623 ir_variable::ir_variable(const struct glsl_type
*type
, const char *name
,
1624 ir_variable_mode mode
)
1625 : ir_instruction(ir_type_variable
)
1629 if (mode
== ir_var_temporary
&& !ir_variable::temporaries_allocate_names
)
1632 /* The ir_variable clone method may call this constructor with name set to
1636 || mode
== ir_var_temporary
1637 || mode
== ir_var_function_in
1638 || mode
== ir_var_function_out
1639 || mode
== ir_var_function_inout
);
1640 assert(name
!= ir_variable::tmp_name
1641 || mode
== ir_var_temporary
);
1642 if (mode
== ir_var_temporary
1643 && (name
== NULL
|| name
== ir_variable::tmp_name
)) {
1644 this->name
= ir_variable::tmp_name
;
1646 this->name
= ralloc_strdup(this, name
);
1649 this->u
.max_ifc_array_access
= NULL
;
1651 this->data
.explicit_location
= false;
1652 this->data
.has_initializer
= false;
1653 this->data
.location
= -1;
1654 this->data
.location_frac
= 0;
1655 this->data
.binding
= 0;
1656 this->data
.warn_extension_index
= 0;
1657 this->constant_value
= NULL
;
1658 this->constant_initializer
= NULL
;
1659 this->data
.origin_upper_left
= false;
1660 this->data
.pixel_center_integer
= false;
1661 this->data
.depth_layout
= ir_depth_layout_none
;
1662 this->data
.used
= false;
1663 this->data
.always_active_io
= false;
1664 this->data
.read_only
= false;
1665 this->data
.centroid
= false;
1666 this->data
.sample
= false;
1667 this->data
.patch
= false;
1668 this->data
.invariant
= false;
1669 this->data
.how_declared
= ir_var_declared_normally
;
1670 this->data
.mode
= mode
;
1671 this->data
.interpolation
= INTERP_QUALIFIER_NONE
;
1672 this->data
.max_array_access
= 0;
1673 this->data
.offset
= 0;
1674 this->data
.precision
= GLSL_PRECISION_NONE
;
1675 this->data
.image_read_only
= false;
1676 this->data
.image_write_only
= false;
1677 this->data
.image_coherent
= false;
1678 this->data
.image_volatile
= false;
1679 this->data
.image_restrict
= false;
1680 this->data
.from_ssbo_unsized_array
= false;
1683 if (type
->base_type
== GLSL_TYPE_SAMPLER
)
1684 this->data
.read_only
= true;
1686 if (type
->is_interface())
1687 this->init_interface_type(type
);
1688 else if (type
->without_array()->is_interface())
1689 this->init_interface_type(type
->without_array());
1695 interpolation_string(unsigned interpolation
)
1697 switch (interpolation
) {
1698 case INTERP_QUALIFIER_NONE
: return "no";
1699 case INTERP_QUALIFIER_SMOOTH
: return "smooth";
1700 case INTERP_QUALIFIER_FLAT
: return "flat";
1701 case INTERP_QUALIFIER_NOPERSPECTIVE
: return "noperspective";
1704 assert(!"Should not get here.");
1709 glsl_interp_qualifier
1710 ir_variable::determine_interpolation_mode(bool flat_shade
)
1712 if (this->data
.interpolation
!= INTERP_QUALIFIER_NONE
)
1713 return (glsl_interp_qualifier
) this->data
.interpolation
;
1714 int location
= this->data
.location
;
1716 location
== VARYING_SLOT_COL0
|| location
== VARYING_SLOT_COL1
;
1717 if (flat_shade
&& is_gl_Color
)
1718 return INTERP_QUALIFIER_FLAT
;
1720 return INTERP_QUALIFIER_SMOOTH
;
1723 const char *const ir_variable::warn_extension_table
[] = {
1725 "GL_ARB_shader_stencil_export",
1726 "GL_AMD_shader_stencil_export",
1730 ir_variable::enable_extension_warning(const char *extension
)
1732 for (unsigned i
= 0; i
< ARRAY_SIZE(warn_extension_table
); i
++) {
1733 if (strcmp(warn_extension_table
[i
], extension
) == 0) {
1734 this->data
.warn_extension_index
= i
;
1739 assert(!"Should not get here.");
1740 this->data
.warn_extension_index
= 0;
1744 ir_variable::get_extension_warning() const
1746 return this->data
.warn_extension_index
== 0
1747 ? NULL
: warn_extension_table
[this->data
.warn_extension_index
];
1750 ir_function_signature::ir_function_signature(const glsl_type
*return_type
,
1751 builtin_available_predicate b
)
1752 : ir_instruction(ir_type_function_signature
),
1753 return_type(return_type
), is_defined(false), is_intrinsic(false),
1754 builtin_avail(b
), _function(NULL
)
1756 this->origin
= NULL
;
1761 ir_function_signature::is_builtin() const
1763 return builtin_avail
!= NULL
;
1768 ir_function_signature::is_builtin_available(const _mesa_glsl_parse_state
*state
) const
1770 /* We can't call the predicate without a state pointer, so just say that
1771 * the signature is available. At compile time, we need the filtering,
1772 * but also receive a valid state pointer. At link time, we're resolving
1773 * imported built-in prototypes to their definitions, which will always
1774 * be an exact match. So we can skip the filtering.
1779 assert(builtin_avail
!= NULL
);
1780 return builtin_avail(state
);
1785 modes_match(unsigned a
, unsigned b
)
1790 /* Accept "in" vs. "const in" */
1791 if ((a
== ir_var_const_in
&& b
== ir_var_function_in
) ||
1792 (b
== ir_var_const_in
&& a
== ir_var_function_in
))
1800 ir_function_signature::qualifiers_match(exec_list
*params
)
1802 /* check that the qualifiers match. */
1803 foreach_two_lists(a_node
, &this->parameters
, b_node
, params
) {
1804 ir_variable
*a
= (ir_variable
*) a_node
;
1805 ir_variable
*b
= (ir_variable
*) b_node
;
1807 if (a
->data
.read_only
!= b
->data
.read_only
||
1808 !modes_match(a
->data
.mode
, b
->data
.mode
) ||
1809 a
->data
.interpolation
!= b
->data
.interpolation
||
1810 a
->data
.centroid
!= b
->data
.centroid
||
1811 a
->data
.sample
!= b
->data
.sample
||
1812 a
->data
.patch
!= b
->data
.patch
||
1813 a
->data
.image_read_only
!= b
->data
.image_read_only
||
1814 a
->data
.image_write_only
!= b
->data
.image_write_only
||
1815 a
->data
.image_coherent
!= b
->data
.image_coherent
||
1816 a
->data
.image_volatile
!= b
->data
.image_volatile
||
1817 a
->data
.image_restrict
!= b
->data
.image_restrict
) {
1819 /* parameter a's qualifiers don't match */
1828 ir_function_signature::replace_parameters(exec_list
*new_params
)
1830 /* Destroy all of the previous parameter information. If the previous
1831 * parameter information comes from the function prototype, it may either
1832 * specify incorrect parameter names or not have names at all.
1834 new_params
->move_nodes_to(¶meters
);
1838 ir_function::ir_function(const char *name
)
1839 : ir_instruction(ir_type_function
)
1841 this->subroutine_index
= -1;
1842 this->name
= ralloc_strdup(this, name
);
1847 ir_function::has_user_signature()
1849 foreach_in_list(ir_function_signature
, sig
, &this->signatures
) {
1850 if (!sig
->is_builtin())
1858 ir_rvalue::error_value(void *mem_ctx
)
1860 ir_rvalue
*v
= new(mem_ctx
) ir_rvalue(ir_type_unset
);
1862 v
->type
= glsl_type::error_type
;
1868 visit_exec_list(exec_list
*list
, ir_visitor
*visitor
)
1870 foreach_in_list_safe(ir_instruction
, node
, list
) {
1871 node
->accept(visitor
);
1877 steal_memory(ir_instruction
*ir
, void *new_ctx
)
1879 ir_variable
*var
= ir
->as_variable();
1880 ir_function
*fn
= ir
->as_function();
1881 ir_constant
*constant
= ir
->as_constant();
1882 if (var
!= NULL
&& var
->constant_value
!= NULL
)
1883 steal_memory(var
->constant_value
, ir
);
1885 if (var
!= NULL
&& var
->constant_initializer
!= NULL
)
1886 steal_memory(var
->constant_initializer
, ir
);
1888 if (fn
!= NULL
&& fn
->subroutine_types
)
1889 ralloc_steal(new_ctx
, fn
->subroutine_types
);
1891 /* The components of aggregate constants are not visited by the normal
1892 * visitor, so steal their values by hand.
1894 if (constant
!= NULL
) {
1895 if (constant
->type
->is_record()) {
1896 foreach_in_list(ir_constant
, field
, &constant
->components
) {
1897 steal_memory(field
, ir
);
1899 } else if (constant
->type
->is_array()) {
1900 for (unsigned int i
= 0; i
< constant
->type
->length
; i
++) {
1901 steal_memory(constant
->array_elements
[i
], ir
);
1906 ralloc_steal(new_ctx
, ir
);
1911 reparent_ir(exec_list
*list
, void *mem_ctx
)
1913 foreach_in_list(ir_instruction
, node
, list
) {
1914 visit_tree(node
, steal_memory
, mem_ctx
);
1920 try_min_one(ir_rvalue
*ir
)
1922 ir_expression
*expr
= ir
->as_expression();
1924 if (!expr
|| expr
->operation
!= ir_binop_min
)
1927 if (expr
->operands
[0]->is_one())
1928 return expr
->operands
[1];
1930 if (expr
->operands
[1]->is_one())
1931 return expr
->operands
[0];
1937 try_max_zero(ir_rvalue
*ir
)
1939 ir_expression
*expr
= ir
->as_expression();
1941 if (!expr
|| expr
->operation
!= ir_binop_max
)
1944 if (expr
->operands
[0]->is_zero())
1945 return expr
->operands
[1];
1947 if (expr
->operands
[1]->is_zero())
1948 return expr
->operands
[0];
1954 ir_rvalue::as_rvalue_to_saturate()
1956 ir_expression
*expr
= this->as_expression();
1961 ir_rvalue
*max_zero
= try_max_zero(expr
);
1963 return try_min_one(max_zero
);
1965 ir_rvalue
*min_one
= try_min_one(expr
);
1967 return try_max_zero(min_one
);
1976 vertices_per_prim(GLenum prim
)
1985 case GL_LINES_ADJACENCY
:
1987 case GL_TRIANGLES_ADJACENCY
:
1990 assert(!"Bad primitive");
1996 * Generate a string describing the mode of a variable
1999 mode_string(const ir_variable
*var
)
2001 switch (var
->data
.mode
) {
2003 return (var
->data
.read_only
) ? "global constant" : "global variable";
2005 case ir_var_uniform
:
2008 case ir_var_shader_storage
:
2011 case ir_var_shader_in
:
2012 return "shader input";
2014 case ir_var_shader_out
:
2015 return "shader output";
2017 case ir_var_function_in
:
2018 case ir_var_const_in
:
2019 return "function input";
2021 case ir_var_function_out
:
2022 return "function output";
2024 case ir_var_function_inout
:
2025 return "function inout";
2027 case ir_var_system_value
:
2028 return "shader input";
2030 case ir_var_temporary
:
2031 return "compiler temporary";
2033 case ir_var_mode_count
:
2037 assert(!"Should not get here.");
2038 return "invalid variable";