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 this->type
= glsl_type::float_type
;
304 case ir_unop_unpack_double_2x32
:
305 this->type
= glsl_type::uvec2_type
;
308 case ir_unop_pack_snorm_2x16
:
309 case ir_unop_pack_snorm_4x8
:
310 case ir_unop_pack_unorm_2x16
:
311 case ir_unop_pack_unorm_4x8
:
312 case ir_unop_pack_half_2x16
:
313 this->type
= glsl_type::uint_type
;
316 case ir_unop_pack_double_2x32
:
317 this->type
= glsl_type::double_type
;
320 case ir_unop_unpack_snorm_2x16
:
321 case ir_unop_unpack_unorm_2x16
:
322 case ir_unop_unpack_half_2x16
:
323 this->type
= glsl_type::vec2_type
;
326 case ir_unop_unpack_snorm_4x8
:
327 case ir_unop_unpack_unorm_4x8
:
328 this->type
= glsl_type::vec4_type
;
331 case ir_unop_frexp_sig
:
332 this->type
= op0
->type
;
334 case ir_unop_frexp_exp
:
335 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
,
336 op0
->type
->vector_elements
, 1);
339 case ir_unop_get_buffer_size
:
340 case ir_unop_ssbo_unsized_array_length
:
341 this->type
= glsl_type::int_type
;
344 case ir_unop_vote_any
:
345 case ir_unop_vote_all
:
346 case ir_unop_vote_eq
:
347 this->type
= glsl_type::bool_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_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
[] = {
569 "interpolate_at_centroid",
571 "ssbo_unsized_array_length",
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
)
675 this->array_elements
= NULL
;
678 ir_constant::ir_constant(const struct glsl_type
*type
,
679 const ir_constant_data
*data
)
680 : ir_rvalue(ir_type_constant
)
682 this->array_elements
= NULL
;
684 assert((type
->base_type
>= GLSL_TYPE_UINT
)
685 && (type
->base_type
<= GLSL_TYPE_BOOL
));
688 memcpy(& this->value
, data
, sizeof(this->value
));
691 ir_constant::ir_constant(float f
, unsigned vector_elements
)
692 : ir_rvalue(ir_type_constant
)
694 assert(vector_elements
<= 4);
695 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
, vector_elements
, 1);
696 for (unsigned i
= 0; i
< vector_elements
; i
++) {
697 this->value
.f
[i
] = f
;
699 for (unsigned i
= vector_elements
; i
< 16; i
++) {
700 this->value
.f
[i
] = 0;
704 ir_constant::ir_constant(double d
, unsigned vector_elements
)
705 : ir_rvalue(ir_type_constant
)
707 assert(vector_elements
<= 4);
708 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
, vector_elements
, 1);
709 for (unsigned i
= 0; i
< vector_elements
; i
++) {
710 this->value
.d
[i
] = d
;
712 for (unsigned i
= vector_elements
; i
< 16; i
++) {
713 this->value
.d
[i
] = 0.0;
717 ir_constant::ir_constant(unsigned int u
, unsigned vector_elements
)
718 : ir_rvalue(ir_type_constant
)
720 assert(vector_elements
<= 4);
721 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT
, vector_elements
, 1);
722 for (unsigned i
= 0; i
< vector_elements
; i
++) {
723 this->value
.u
[i
] = u
;
725 for (unsigned i
= vector_elements
; i
< 16; i
++) {
726 this->value
.u
[i
] = 0;
730 ir_constant::ir_constant(int integer
, unsigned vector_elements
)
731 : ir_rvalue(ir_type_constant
)
733 assert(vector_elements
<= 4);
734 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
, vector_elements
, 1);
735 for (unsigned i
= 0; i
< vector_elements
; i
++) {
736 this->value
.i
[i
] = integer
;
738 for (unsigned i
= vector_elements
; i
< 16; i
++) {
739 this->value
.i
[i
] = 0;
743 ir_constant::ir_constant(bool b
, unsigned vector_elements
)
744 : ir_rvalue(ir_type_constant
)
746 assert(vector_elements
<= 4);
747 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
, vector_elements
, 1);
748 for (unsigned i
= 0; i
< vector_elements
; i
++) {
749 this->value
.b
[i
] = b
;
751 for (unsigned i
= vector_elements
; i
< 16; i
++) {
752 this->value
.b
[i
] = false;
756 ir_constant::ir_constant(const ir_constant
*c
, unsigned i
)
757 : ir_rvalue(ir_type_constant
)
759 this->array_elements
= NULL
;
760 this->type
= c
->type
->get_base_type();
762 switch (this->type
->base_type
) {
763 case GLSL_TYPE_UINT
: this->value
.u
[0] = c
->value
.u
[i
]; break;
764 case GLSL_TYPE_INT
: this->value
.i
[0] = c
->value
.i
[i
]; break;
765 case GLSL_TYPE_FLOAT
: this->value
.f
[0] = c
->value
.f
[i
]; break;
766 case GLSL_TYPE_BOOL
: this->value
.b
[0] = c
->value
.b
[i
]; break;
767 case GLSL_TYPE_DOUBLE
: this->value
.d
[0] = c
->value
.d
[i
]; break;
768 default: assert(!"Should not get here."); break;
772 ir_constant::ir_constant(const struct glsl_type
*type
, exec_list
*value_list
)
773 : ir_rvalue(ir_type_constant
)
775 this->array_elements
= NULL
;
778 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
779 || type
->is_record() || type
->is_array());
781 if (type
->is_array()) {
782 this->array_elements
= ralloc_array(this, ir_constant
*, type
->length
);
784 foreach_in_list(ir_constant
, value
, value_list
) {
785 assert(value
->as_constant() != NULL
);
787 this->array_elements
[i
++] = value
;
792 /* If the constant is a record, the types of each of the entries in
793 * value_list must be a 1-for-1 match with the structure components. Each
794 * entry must also be a constant. Just move the nodes from the value_list
795 * to the list in the ir_constant.
797 /* FINISHME: Should there be some type checking and / or assertions here? */
798 /* FINISHME: Should the new constant take ownership of the nodes from
799 * FINISHME: value_list, or should it make copies?
801 if (type
->is_record()) {
802 value_list
->move_nodes_to(& this->components
);
806 for (unsigned i
= 0; i
< 16; i
++) {
807 this->value
.u
[i
] = 0;
810 ir_constant
*value
= (ir_constant
*) (value_list
->get_head_raw());
812 /* Constructors with exactly one scalar argument are special for vectors
813 * and matrices. For vectors, the scalar value is replicated to fill all
814 * the components. For matrices, the scalar fills the components of the
815 * diagonal while the rest is filled with 0.
817 if (value
->type
->is_scalar() && value
->next
->is_tail_sentinel()) {
818 if (type
->is_matrix()) {
819 /* Matrix - fill diagonal (rest is already set to 0) */
820 assert(type
->base_type
== GLSL_TYPE_FLOAT
||
821 type
->base_type
== GLSL_TYPE_DOUBLE
);
822 for (unsigned i
= 0; i
< type
->matrix_columns
; i
++) {
823 if (type
->base_type
== GLSL_TYPE_FLOAT
)
824 this->value
.f
[i
* type
->vector_elements
+ i
] =
827 this->value
.d
[i
* type
->vector_elements
+ i
] =
831 /* Vector or scalar - fill all components */
832 switch (type
->base_type
) {
835 for (unsigned i
= 0; i
< type
->components(); i
++)
836 this->value
.u
[i
] = value
->value
.u
[0];
838 case GLSL_TYPE_FLOAT
:
839 for (unsigned i
= 0; i
< type
->components(); i
++)
840 this->value
.f
[i
] = value
->value
.f
[0];
842 case GLSL_TYPE_DOUBLE
:
843 for (unsigned i
= 0; i
< type
->components(); i
++)
844 this->value
.d
[i
] = value
->value
.d
[0];
847 for (unsigned i
= 0; i
< type
->components(); i
++)
848 this->value
.b
[i
] = value
->value
.b
[0];
851 assert(!"Should not get here.");
858 if (type
->is_matrix() && value
->type
->is_matrix()) {
859 assert(value
->next
->is_tail_sentinel());
861 /* From section 5.4.2 of the GLSL 1.20 spec:
862 * "If a matrix is constructed from a matrix, then each component
863 * (column i, row j) in the result that has a corresponding component
864 * (column i, row j) in the argument will be initialized from there."
866 unsigned cols
= MIN2(type
->matrix_columns
, value
->type
->matrix_columns
);
867 unsigned rows
= MIN2(type
->vector_elements
, value
->type
->vector_elements
);
868 for (unsigned i
= 0; i
< cols
; i
++) {
869 for (unsigned j
= 0; j
< rows
; j
++) {
870 const unsigned src
= i
* value
->type
->vector_elements
+ j
;
871 const unsigned dst
= i
* type
->vector_elements
+ j
;
872 this->value
.f
[dst
] = value
->value
.f
[src
];
876 /* "All other components will be initialized to the identity matrix." */
877 for (unsigned i
= cols
; i
< type
->matrix_columns
; i
++)
878 this->value
.f
[i
* type
->vector_elements
+ i
] = 1.0;
883 /* Use each component from each entry in the value_list to initialize one
884 * component of the constant being constructed.
888 assert(value
->as_constant() != NULL
);
889 assert(!value
->is_tail_sentinel());
891 for (unsigned j
= 0; j
< value
->type
->components(); j
++) {
892 switch (type
->base_type
) {
894 this->value
.u
[i
] = value
->get_uint_component(j
);
897 this->value
.i
[i
] = value
->get_int_component(j
);
899 case GLSL_TYPE_FLOAT
:
900 this->value
.f
[i
] = value
->get_float_component(j
);
903 this->value
.b
[i
] = value
->get_bool_component(j
);
905 case GLSL_TYPE_DOUBLE
:
906 this->value
.d
[i
] = value
->get_double_component(j
);
909 /* FINISHME: What to do? Exceptions are not the answer.
915 if (i
>= type
->components())
919 if (i
>= type
->components())
920 break; /* avoid downcasting a list sentinel */
921 value
= (ir_constant
*) value
->next
;
926 ir_constant::zero(void *mem_ctx
, const glsl_type
*type
)
928 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
929 || type
->is_record() || type
->is_array());
931 ir_constant
*c
= new(mem_ctx
) ir_constant
;
933 memset(&c
->value
, 0, sizeof(c
->value
));
935 if (type
->is_array()) {
936 c
->array_elements
= ralloc_array(c
, ir_constant
*, type
->length
);
938 for (unsigned i
= 0; i
< type
->length
; i
++)
939 c
->array_elements
[i
] = ir_constant::zero(c
, type
->fields
.array
);
942 if (type
->is_record()) {
943 for (unsigned i
= 0; i
< type
->length
; i
++) {
944 ir_constant
*comp
= ir_constant::zero(mem_ctx
, type
->fields
.structure
[i
].type
);
945 c
->components
.push_tail(comp
);
953 ir_constant::get_bool_component(unsigned i
) const
955 switch (this->type
->base_type
) {
956 case GLSL_TYPE_UINT
: return this->value
.u
[i
] != 0;
957 case GLSL_TYPE_INT
: return this->value
.i
[i
] != 0;
958 case GLSL_TYPE_FLOAT
: return ((int)this->value
.f
[i
]) != 0;
959 case GLSL_TYPE_BOOL
: return this->value
.b
[i
];
960 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
] != 0.0;
961 default: assert(!"Should not get here."); break;
964 /* Must return something to make the compiler happy. This is clearly an
971 ir_constant::get_float_component(unsigned i
) const
973 switch (this->type
->base_type
) {
974 case GLSL_TYPE_UINT
: return (float) this->value
.u
[i
];
975 case GLSL_TYPE_INT
: return (float) this->value
.i
[i
];
976 case GLSL_TYPE_FLOAT
: return this->value
.f
[i
];
977 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0f
: 0.0f
;
978 case GLSL_TYPE_DOUBLE
: return (float) this->value
.d
[i
];
979 default: assert(!"Should not get here."); break;
982 /* Must return something to make the compiler happy. This is clearly an
989 ir_constant::get_double_component(unsigned i
) const
991 switch (this->type
->base_type
) {
992 case GLSL_TYPE_UINT
: return (double) this->value
.u
[i
];
993 case GLSL_TYPE_INT
: return (double) this->value
.i
[i
];
994 case GLSL_TYPE_FLOAT
: return (double) this->value
.f
[i
];
995 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0 : 0.0;
996 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
];
997 default: assert(!"Should not get here."); break;
1000 /* Must return something to make the compiler happy. This is clearly an
1007 ir_constant::get_int_component(unsigned i
) const
1009 switch (this->type
->base_type
) {
1010 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1011 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1012 case GLSL_TYPE_FLOAT
: return (int) this->value
.f
[i
];
1013 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1014 case GLSL_TYPE_DOUBLE
: return (int) this->value
.d
[i
];
1015 default: assert(!"Should not get here."); break;
1018 /* Must return something to make the compiler happy. This is clearly an
1025 ir_constant::get_uint_component(unsigned i
) const
1027 switch (this->type
->base_type
) {
1028 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1029 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1030 case GLSL_TYPE_FLOAT
: return (unsigned) this->value
.f
[i
];
1031 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1032 case GLSL_TYPE_DOUBLE
: return (unsigned) this->value
.d
[i
];
1033 default: assert(!"Should not get here."); break;
1036 /* Must return something to make the compiler happy. This is clearly an
1043 ir_constant::get_array_element(unsigned i
) const
1045 assert(this->type
->is_array());
1047 /* From page 35 (page 41 of the PDF) of the GLSL 1.20 spec:
1049 * "Behavior is undefined if a shader subscripts an array with an index
1050 * less than 0 or greater than or equal to the size the array was
1053 * Most out-of-bounds accesses are removed before things could get this far.
1054 * There are cases where non-constant array index values can get constant
1059 else if (i
>= this->type
->length
)
1060 i
= this->type
->length
- 1;
1062 return array_elements
[i
];
1066 ir_constant::get_record_field(const char *name
)
1068 int idx
= this->type
->field_index(name
);
1073 if (this->components
.is_empty())
1076 exec_node
*node
= this->components
.get_head_raw();
1077 for (int i
= 0; i
< idx
; i
++) {
1080 /* If the end of the list is encountered before the element matching the
1081 * requested field is found, return NULL.
1083 if (node
->is_tail_sentinel())
1087 return (ir_constant
*) node
;
1091 ir_constant::copy_offset(ir_constant
*src
, int offset
)
1093 switch (this->type
->base_type
) {
1094 case GLSL_TYPE_UINT
:
1096 case GLSL_TYPE_FLOAT
:
1097 case GLSL_TYPE_DOUBLE
:
1098 case GLSL_TYPE_BOOL
: {
1099 unsigned int size
= src
->type
->components();
1100 assert (size
<= this->type
->components() - offset
);
1101 for (unsigned int i
=0; i
<size
; i
++) {
1102 switch (this->type
->base_type
) {
1103 case GLSL_TYPE_UINT
:
1104 value
.u
[i
+offset
] = src
->get_uint_component(i
);
1107 value
.i
[i
+offset
] = src
->get_int_component(i
);
1109 case GLSL_TYPE_FLOAT
:
1110 value
.f
[i
+offset
] = src
->get_float_component(i
);
1112 case GLSL_TYPE_BOOL
:
1113 value
.b
[i
+offset
] = src
->get_bool_component(i
);
1115 case GLSL_TYPE_DOUBLE
:
1116 value
.d
[i
+offset
] = src
->get_double_component(i
);
1118 default: // Shut up the compiler
1125 case GLSL_TYPE_STRUCT
: {
1126 assert (src
->type
== this->type
);
1127 this->components
.make_empty();
1128 foreach_in_list(ir_constant
, orig
, &src
->components
) {
1129 this->components
.push_tail(orig
->clone(this, NULL
));
1134 case GLSL_TYPE_ARRAY
: {
1135 assert (src
->type
== this->type
);
1136 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1137 this->array_elements
[i
] = src
->array_elements
[i
]->clone(this, NULL
);
1143 assert(!"Should not get here.");
1149 ir_constant::copy_masked_offset(ir_constant
*src
, int offset
, unsigned int mask
)
1151 assert (!type
->is_array() && !type
->is_record());
1153 if (!type
->is_vector() && !type
->is_matrix()) {
1159 for (int i
=0; i
<4; i
++) {
1160 if (mask
& (1 << i
)) {
1161 switch (this->type
->base_type
) {
1162 case GLSL_TYPE_UINT
:
1163 value
.u
[i
+offset
] = src
->get_uint_component(id
++);
1166 value
.i
[i
+offset
] = src
->get_int_component(id
++);
1168 case GLSL_TYPE_FLOAT
:
1169 value
.f
[i
+offset
] = src
->get_float_component(id
++);
1171 case GLSL_TYPE_BOOL
:
1172 value
.b
[i
+offset
] = src
->get_bool_component(id
++);
1174 case GLSL_TYPE_DOUBLE
:
1175 value
.d
[i
+offset
] = src
->get_double_component(id
++);
1178 assert(!"Should not get here.");
1186 ir_constant::has_value(const ir_constant
*c
) const
1188 if (this->type
!= c
->type
)
1191 if (this->type
->is_array()) {
1192 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1193 if (!this->array_elements
[i
]->has_value(c
->array_elements
[i
]))
1199 if (this->type
->base_type
== GLSL_TYPE_STRUCT
) {
1200 const exec_node
*a_node
= this->components
.get_head_raw();
1201 const exec_node
*b_node
= c
->components
.get_head_raw();
1203 while (!a_node
->is_tail_sentinel()) {
1204 assert(!b_node
->is_tail_sentinel());
1206 const ir_constant
*const a_field
= (ir_constant
*) a_node
;
1207 const ir_constant
*const b_field
= (ir_constant
*) b_node
;
1209 if (!a_field
->has_value(b_field
))
1212 a_node
= a_node
->next
;
1213 b_node
= b_node
->next
;
1219 for (unsigned i
= 0; i
< this->type
->components(); i
++) {
1220 switch (this->type
->base_type
) {
1221 case GLSL_TYPE_UINT
:
1222 if (this->value
.u
[i
] != c
->value
.u
[i
])
1226 if (this->value
.i
[i
] != c
->value
.i
[i
])
1229 case GLSL_TYPE_FLOAT
:
1230 if (this->value
.f
[i
] != c
->value
.f
[i
])
1233 case GLSL_TYPE_BOOL
:
1234 if (this->value
.b
[i
] != c
->value
.b
[i
])
1237 case GLSL_TYPE_DOUBLE
:
1238 if (this->value
.d
[i
] != c
->value
.d
[i
])
1242 assert(!"Should not get here.");
1251 ir_constant::is_value(float f
, int i
) const
1253 if (!this->type
->is_scalar() && !this->type
->is_vector())
1256 /* Only accept boolean values for 0/1. */
1257 if (int(bool(i
)) != i
&& this->type
->is_boolean())
1260 for (unsigned c
= 0; c
< this->type
->vector_elements
; c
++) {
1261 switch (this->type
->base_type
) {
1262 case GLSL_TYPE_FLOAT
:
1263 if (this->value
.f
[c
] != f
)
1267 if (this->value
.i
[c
] != i
)
1270 case GLSL_TYPE_UINT
:
1271 if (this->value
.u
[c
] != unsigned(i
))
1274 case GLSL_TYPE_BOOL
:
1275 if (this->value
.b
[c
] != bool(i
))
1278 case GLSL_TYPE_DOUBLE
:
1279 if (this->value
.d
[c
] != double(f
))
1283 /* The only other base types are structures, arrays, and samplers.
1284 * Samplers cannot be constants, and the others should have been
1285 * filtered out above.
1287 assert(!"Should not get here.");
1296 ir_constant::is_zero() const
1298 return is_value(0.0, 0);
1302 ir_constant::is_one() const
1304 return is_value(1.0, 1);
1308 ir_constant::is_negative_one() const
1310 return is_value(-1.0, -1);
1314 ir_constant::is_uint16_constant() const
1316 if (!type
->is_integer())
1319 return value
.u
[0] < (1 << 16);
1323 : ir_instruction(ir_type_loop
)
1328 ir_dereference_variable::ir_dereference_variable(ir_variable
*var
)
1329 : ir_dereference(ir_type_dereference_variable
)
1331 assert(var
!= NULL
);
1334 this->type
= var
->type
;
1338 ir_dereference_array::ir_dereference_array(ir_rvalue
*value
,
1339 ir_rvalue
*array_index
)
1340 : ir_dereference(ir_type_dereference_array
)
1342 this->array_index
= array_index
;
1343 this->set_array(value
);
1347 ir_dereference_array::ir_dereference_array(ir_variable
*var
,
1348 ir_rvalue
*array_index
)
1349 : ir_dereference(ir_type_dereference_array
)
1351 void *ctx
= ralloc_parent(var
);
1353 this->array_index
= array_index
;
1354 this->set_array(new(ctx
) ir_dereference_variable(var
));
1359 ir_dereference_array::set_array(ir_rvalue
*value
)
1361 assert(value
!= NULL
);
1363 this->array
= value
;
1365 const glsl_type
*const vt
= this->array
->type
;
1367 if (vt
->is_array()) {
1368 type
= vt
->fields
.array
;
1369 } else if (vt
->is_matrix()) {
1370 type
= vt
->column_type();
1371 } else if (vt
->is_vector()) {
1372 type
= vt
->get_base_type();
1377 ir_dereference_record::ir_dereference_record(ir_rvalue
*value
,
1379 : ir_dereference(ir_type_dereference_record
)
1381 assert(value
!= NULL
);
1383 this->record
= value
;
1384 this->field
= ralloc_strdup(this, field
);
1385 this->type
= this->record
->type
->field_type(field
);
1389 ir_dereference_record::ir_dereference_record(ir_variable
*var
,
1391 : ir_dereference(ir_type_dereference_record
)
1393 void *ctx
= ralloc_parent(var
);
1395 this->record
= new(ctx
) ir_dereference_variable(var
);
1396 this->field
= ralloc_strdup(this, field
);
1397 this->type
= this->record
->type
->field_type(field
);
1401 ir_dereference::is_lvalue() const
1403 ir_variable
*var
= this->variable_referenced();
1405 /* Every l-value derference chain eventually ends in a variable.
1407 if ((var
== NULL
) || var
->data
.read_only
)
1410 /* From section 4.1.7 of the GLSL 4.40 spec:
1412 * "Opaque variables cannot be treated as l-values; hence cannot
1413 * be used as out or inout function parameters, nor can they be
1416 if (this->type
->contains_opaque())
1423 static const char * const tex_opcode_strs
[] = { "tex", "txb", "txl", "txd", "txf", "txf_ms", "txs", "lod", "tg4", "query_levels", "texture_samples", "samples_identical" };
1425 const char *ir_texture::opcode_string()
1427 assert((unsigned int) op
< ARRAY_SIZE(tex_opcode_strs
));
1428 return tex_opcode_strs
[op
];
1432 ir_texture::get_opcode(const char *str
)
1434 const int count
= sizeof(tex_opcode_strs
) / sizeof(tex_opcode_strs
[0]);
1435 for (int op
= 0; op
< count
; op
++) {
1436 if (strcmp(str
, tex_opcode_strs
[op
]) == 0)
1437 return (ir_texture_opcode
) op
;
1439 return (ir_texture_opcode
) -1;
1444 ir_texture::set_sampler(ir_dereference
*sampler
, const glsl_type
*type
)
1446 assert(sampler
!= NULL
);
1447 assert(type
!= NULL
);
1448 this->sampler
= sampler
;
1451 if (this->op
== ir_txs
|| this->op
== ir_query_levels
||
1452 this->op
== ir_texture_samples
) {
1453 assert(type
->base_type
== GLSL_TYPE_INT
);
1454 } else if (this->op
== ir_lod
) {
1455 assert(type
->vector_elements
== 2);
1456 assert(type
->base_type
== GLSL_TYPE_FLOAT
);
1457 } else if (this->op
== ir_samples_identical
) {
1458 assert(type
== glsl_type::bool_type
);
1459 assert(sampler
->type
->base_type
== GLSL_TYPE_SAMPLER
);
1460 assert(sampler
->type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
);
1462 assert(sampler
->type
->sampled_type
== (int) type
->base_type
);
1463 if (sampler
->type
->sampler_shadow
)
1464 assert(type
->vector_elements
== 4 || type
->vector_elements
== 1);
1466 assert(type
->vector_elements
== 4);
1472 ir_swizzle::init_mask(const unsigned *comp
, unsigned count
)
1474 assert((count
>= 1) && (count
<= 4));
1476 memset(&this->mask
, 0, sizeof(this->mask
));
1477 this->mask
.num_components
= count
;
1479 unsigned dup_mask
= 0;
1482 assert(comp
[3] <= 3);
1483 dup_mask
|= (1U << comp
[3])
1484 & ((1U << comp
[0]) | (1U << comp
[1]) | (1U << comp
[2]));
1485 this->mask
.w
= comp
[3];
1488 assert(comp
[2] <= 3);
1489 dup_mask
|= (1U << comp
[2])
1490 & ((1U << comp
[0]) | (1U << comp
[1]));
1491 this->mask
.z
= comp
[2];
1494 assert(comp
[1] <= 3);
1495 dup_mask
|= (1U << comp
[1])
1496 & ((1U << comp
[0]));
1497 this->mask
.y
= comp
[1];
1500 assert(comp
[0] <= 3);
1501 this->mask
.x
= comp
[0];
1504 this->mask
.has_duplicates
= dup_mask
!= 0;
1506 /* Based on the number of elements in the swizzle and the base type
1507 * (i.e., float, int, unsigned, or bool) of the vector being swizzled,
1508 * generate the type of the resulting value.
1510 type
= glsl_type::get_instance(val
->type
->base_type
, mask
.num_components
, 1);
1513 ir_swizzle::ir_swizzle(ir_rvalue
*val
, unsigned x
, unsigned y
, unsigned z
,
1514 unsigned w
, unsigned count
)
1515 : ir_rvalue(ir_type_swizzle
), val(val
)
1517 const unsigned components
[4] = { x
, y
, z
, w
};
1518 this->init_mask(components
, count
);
1521 ir_swizzle::ir_swizzle(ir_rvalue
*val
, const unsigned *comp
,
1523 : ir_rvalue(ir_type_swizzle
), val(val
)
1525 this->init_mask(comp
, count
);
1528 ir_swizzle::ir_swizzle(ir_rvalue
*val
, ir_swizzle_mask mask
)
1529 : ir_rvalue(ir_type_swizzle
)
1533 this->type
= glsl_type::get_instance(val
->type
->base_type
,
1534 mask
.num_components
, 1);
1543 ir_swizzle::create(ir_rvalue
*val
, const char *str
, unsigned vector_length
)
1545 void *ctx
= ralloc_parent(val
);
1547 /* For each possible swizzle character, this table encodes the value in
1548 * \c idx_map that represents the 0th element of the vector. For invalid
1549 * swizzle characters (e.g., 'k'), a special value is used that will allow
1550 * detection of errors.
1552 static const unsigned char base_idx
[26] = {
1553 /* a b c d e f g h i j k l m */
1554 R
, R
, I
, I
, I
, I
, R
, I
, I
, I
, I
, I
, I
,
1555 /* n o p q r s t u v w x y z */
1556 I
, I
, S
, S
, R
, S
, S
, I
, I
, X
, X
, X
, X
1559 /* Each valid swizzle character has an entry in the previous table. This
1560 * table encodes the base index encoded in the previous table plus the actual
1561 * index of the swizzle character. When processing swizzles, the first
1562 * character in the string is indexed in the previous table. Each character
1563 * in the string is indexed in this table, and the value found there has the
1564 * value form the first table subtracted. The result must be on the range
1567 * For example, the string "wzyx" will get X from the first table. Each of
1568 * the charcaters will get X+3, X+2, X+1, and X+0 from this table. After
1569 * subtraction, the swizzle values are { 3, 2, 1, 0 }.
1571 * The string "wzrg" will get X from the first table. Each of the characters
1572 * will get X+3, X+2, R+0, and R+1 from this table. After subtraction, the
1573 * swizzle values are { 3, 2, 4, 5 }. Since 4 and 5 are outside the range
1574 * [0,3], the error is detected.
1576 static const unsigned char idx_map
[26] = {
1577 /* a b c d e f g h i j k l m */
1578 R
+3, R
+2, 0, 0, 0, 0, R
+1, 0, 0, 0, 0, 0, 0,
1579 /* n o p q r s t u v w x y z */
1580 0, 0, S
+2, S
+3, R
+0, S
+0, S
+1, 0, 0, X
+3, X
+0, X
+1, X
+2
1583 int swiz_idx
[4] = { 0, 0, 0, 0 };
1587 /* Validate the first character in the swizzle string and look up the base
1588 * index value as described above.
1590 if ((str
[0] < 'a') || (str
[0] > 'z'))
1593 const unsigned base
= base_idx
[str
[0] - 'a'];
1596 for (i
= 0; (i
< 4) && (str
[i
] != '\0'); i
++) {
1597 /* Validate the next character, and, as described above, convert it to a
1600 if ((str
[i
] < 'a') || (str
[i
] > 'z'))
1603 swiz_idx
[i
] = idx_map
[str
[i
] - 'a'] - base
;
1604 if ((swiz_idx
[i
] < 0) || (swiz_idx
[i
] >= (int) vector_length
))
1611 return new(ctx
) ir_swizzle(val
, swiz_idx
[0], swiz_idx
[1], swiz_idx
[2],
1621 ir_swizzle::variable_referenced() const
1623 return this->val
->variable_referenced();
1627 bool ir_variable::temporaries_allocate_names
= false;
1629 const char ir_variable::tmp_name
[] = "compiler_temp";
1631 ir_variable::ir_variable(const struct glsl_type
*type
, const char *name
,
1632 ir_variable_mode mode
)
1633 : ir_instruction(ir_type_variable
)
1637 if (mode
== ir_var_temporary
&& !ir_variable::temporaries_allocate_names
)
1640 /* The ir_variable clone method may call this constructor with name set to
1644 || mode
== ir_var_temporary
1645 || mode
== ir_var_function_in
1646 || mode
== ir_var_function_out
1647 || mode
== ir_var_function_inout
);
1648 assert(name
!= ir_variable::tmp_name
1649 || mode
== ir_var_temporary
);
1650 if (mode
== ir_var_temporary
1651 && (name
== NULL
|| name
== ir_variable::tmp_name
)) {
1652 this->name
= ir_variable::tmp_name
;
1654 this->name
= ralloc_strdup(this, name
);
1657 this->u
.max_ifc_array_access
= NULL
;
1659 this->data
.explicit_location
= false;
1660 this->data
.has_initializer
= false;
1661 this->data
.location
= -1;
1662 this->data
.location_frac
= 0;
1663 this->data
.binding
= 0;
1664 this->data
.warn_extension_index
= 0;
1665 this->constant_value
= NULL
;
1666 this->constant_initializer
= NULL
;
1667 this->data
.origin_upper_left
= false;
1668 this->data
.pixel_center_integer
= false;
1669 this->data
.depth_layout
= ir_depth_layout_none
;
1670 this->data
.used
= false;
1671 this->data
.always_active_io
= false;
1672 this->data
.read_only
= false;
1673 this->data
.centroid
= false;
1674 this->data
.sample
= false;
1675 this->data
.patch
= false;
1676 this->data
.invariant
= false;
1677 this->data
.how_declared
= ir_var_declared_normally
;
1678 this->data
.mode
= mode
;
1679 this->data
.interpolation
= INTERP_MODE_NONE
;
1680 this->data
.max_array_access
= -1;
1681 this->data
.offset
= 0;
1682 this->data
.precision
= GLSL_PRECISION_NONE
;
1683 this->data
.image_read_only
= false;
1684 this->data
.image_write_only
= false;
1685 this->data
.image_coherent
= false;
1686 this->data
.image_volatile
= false;
1687 this->data
.image_restrict
= false;
1688 this->data
.from_ssbo_unsized_array
= false;
1689 this->data
.fb_fetch_output
= 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_MODE_NONE
: return "no";
1708 case INTERP_MODE_SMOOTH
: return "smooth";
1709 case INTERP_MODE_FLAT
: return "flat";
1710 case INTERP_MODE_NOPERSPECTIVE
: return "noperspective";
1713 assert(!"Should not get here.");
1717 const char *const ir_variable::warn_extension_table
[] = {
1719 "GL_ARB_shader_stencil_export",
1720 "GL_AMD_shader_stencil_export",
1724 ir_variable::enable_extension_warning(const char *extension
)
1726 for (unsigned i
= 0; i
< ARRAY_SIZE(warn_extension_table
); i
++) {
1727 if (strcmp(warn_extension_table
[i
], extension
) == 0) {
1728 this->data
.warn_extension_index
= i
;
1733 assert(!"Should not get here.");
1734 this->data
.warn_extension_index
= 0;
1738 ir_variable::get_extension_warning() const
1740 return this->data
.warn_extension_index
== 0
1741 ? NULL
: warn_extension_table
[this->data
.warn_extension_index
];
1744 ir_function_signature::ir_function_signature(const glsl_type
*return_type
,
1745 builtin_available_predicate b
)
1746 : ir_instruction(ir_type_function_signature
),
1747 return_type(return_type
), is_defined(false), is_intrinsic(false),
1748 builtin_avail(b
), _function(NULL
)
1750 this->origin
= NULL
;
1755 ir_function_signature::is_builtin() const
1757 return builtin_avail
!= NULL
;
1762 ir_function_signature::is_builtin_available(const _mesa_glsl_parse_state
*state
) const
1764 /* We can't call the predicate without a state pointer, so just say that
1765 * the signature is available. At compile time, we need the filtering,
1766 * but also receive a valid state pointer. At link time, we're resolving
1767 * imported built-in prototypes to their definitions, which will always
1768 * be an exact match. So we can skip the filtering.
1773 assert(builtin_avail
!= NULL
);
1774 return builtin_avail(state
);
1779 modes_match(unsigned a
, unsigned b
)
1784 /* Accept "in" vs. "const in" */
1785 if ((a
== ir_var_const_in
&& b
== ir_var_function_in
) ||
1786 (b
== ir_var_const_in
&& a
== ir_var_function_in
))
1794 ir_function_signature::qualifiers_match(exec_list
*params
)
1796 /* check that the qualifiers match. */
1797 foreach_two_lists(a_node
, &this->parameters
, b_node
, params
) {
1798 ir_variable
*a
= (ir_variable
*) a_node
;
1799 ir_variable
*b
= (ir_variable
*) b_node
;
1801 if (a
->data
.read_only
!= b
->data
.read_only
||
1802 !modes_match(a
->data
.mode
, b
->data
.mode
) ||
1803 a
->data
.interpolation
!= b
->data
.interpolation
||
1804 a
->data
.centroid
!= b
->data
.centroid
||
1805 a
->data
.sample
!= b
->data
.sample
||
1806 a
->data
.patch
!= b
->data
.patch
||
1807 a
->data
.image_read_only
!= b
->data
.image_read_only
||
1808 a
->data
.image_write_only
!= b
->data
.image_write_only
||
1809 a
->data
.image_coherent
!= b
->data
.image_coherent
||
1810 a
->data
.image_volatile
!= b
->data
.image_volatile
||
1811 a
->data
.image_restrict
!= b
->data
.image_restrict
) {
1813 /* parameter a's qualifiers don't match */
1822 ir_function_signature::replace_parameters(exec_list
*new_params
)
1824 /* Destroy all of the previous parameter information. If the previous
1825 * parameter information comes from the function prototype, it may either
1826 * specify incorrect parameter names or not have names at all.
1828 new_params
->move_nodes_to(¶meters
);
1832 ir_function::ir_function(const char *name
)
1833 : ir_instruction(ir_type_function
)
1835 this->subroutine_index
= -1;
1836 this->name
= ralloc_strdup(this, name
);
1841 ir_function::has_user_signature()
1843 foreach_in_list(ir_function_signature
, sig
, &this->signatures
) {
1844 if (!sig
->is_builtin())
1852 ir_rvalue::error_value(void *mem_ctx
)
1854 ir_rvalue
*v
= new(mem_ctx
) ir_rvalue(ir_type_unset
);
1856 v
->type
= glsl_type::error_type
;
1862 visit_exec_list(exec_list
*list
, ir_visitor
*visitor
)
1864 foreach_in_list_safe(ir_instruction
, node
, list
) {
1865 node
->accept(visitor
);
1871 steal_memory(ir_instruction
*ir
, void *new_ctx
)
1873 ir_variable
*var
= ir
->as_variable();
1874 ir_function
*fn
= ir
->as_function();
1875 ir_constant
*constant
= ir
->as_constant();
1876 if (var
!= NULL
&& var
->constant_value
!= NULL
)
1877 steal_memory(var
->constant_value
, ir
);
1879 if (var
!= NULL
&& var
->constant_initializer
!= NULL
)
1880 steal_memory(var
->constant_initializer
, ir
);
1882 if (fn
!= NULL
&& fn
->subroutine_types
)
1883 ralloc_steal(new_ctx
, fn
->subroutine_types
);
1885 /* The components of aggregate constants are not visited by the normal
1886 * visitor, so steal their values by hand.
1888 if (constant
!= NULL
) {
1889 if (constant
->type
->is_record()) {
1890 foreach_in_list(ir_constant
, field
, &constant
->components
) {
1891 steal_memory(field
, ir
);
1893 } else if (constant
->type
->is_array()) {
1894 for (unsigned int i
= 0; i
< constant
->type
->length
; i
++) {
1895 steal_memory(constant
->array_elements
[i
], ir
);
1900 ralloc_steal(new_ctx
, ir
);
1905 reparent_ir(exec_list
*list
, void *mem_ctx
)
1907 foreach_in_list(ir_instruction
, node
, list
) {
1908 visit_tree(node
, steal_memory
, mem_ctx
);
1914 try_min_one(ir_rvalue
*ir
)
1916 ir_expression
*expr
= ir
->as_expression();
1918 if (!expr
|| expr
->operation
!= ir_binop_min
)
1921 if (expr
->operands
[0]->is_one())
1922 return expr
->operands
[1];
1924 if (expr
->operands
[1]->is_one())
1925 return expr
->operands
[0];
1931 try_max_zero(ir_rvalue
*ir
)
1933 ir_expression
*expr
= ir
->as_expression();
1935 if (!expr
|| expr
->operation
!= ir_binop_max
)
1938 if (expr
->operands
[0]->is_zero())
1939 return expr
->operands
[1];
1941 if (expr
->operands
[1]->is_zero())
1942 return expr
->operands
[0];
1948 ir_rvalue::as_rvalue_to_saturate()
1950 ir_expression
*expr
= this->as_expression();
1955 ir_rvalue
*max_zero
= try_max_zero(expr
);
1957 return try_min_one(max_zero
);
1959 ir_rvalue
*min_one
= try_min_one(expr
);
1961 return try_max_zero(min_one
);
1970 vertices_per_prim(GLenum prim
)
1979 case GL_LINES_ADJACENCY
:
1981 case GL_TRIANGLES_ADJACENCY
:
1984 assert(!"Bad primitive");
1990 * Generate a string describing the mode of a variable
1993 mode_string(const ir_variable
*var
)
1995 switch (var
->data
.mode
) {
1997 return (var
->data
.read_only
) ? "global constant" : "global variable";
1999 case ir_var_uniform
:
2002 case ir_var_shader_storage
:
2005 case ir_var_shader_in
:
2006 return "shader input";
2008 case ir_var_shader_out
:
2009 return "shader output";
2011 case ir_var_function_in
:
2012 case ir_var_const_in
:
2013 return "function input";
2015 case ir_var_function_out
:
2016 return "function output";
2018 case ir_var_function_inout
:
2019 return "function inout";
2021 case ir_var_system_value
:
2022 return "shader input";
2024 case ir_var_temporary
:
2025 return "compiler temporary";
2027 case ir_var_mode_count
:
2031 assert(!"Should not get here.");
2032 return "invalid variable";