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
;
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
:
436 case ir_binop_interpolate_at_offset
:
437 case ir_binop_interpolate_at_sample
:
438 this->type
= op0
->type
;
441 case ir_binop_vector_extract
:
442 this->type
= op0
->type
->get_scalar_type();
446 assert(!"not reached: missing automatic type setup for ir_expression");
447 this->type
= glsl_type::float_type
;
451 ir_expression::ir_expression(int op
, ir_rvalue
*op0
, ir_rvalue
*op1
,
453 : ir_rvalue(ir_type_expression
)
455 this->operation
= ir_expression_operation(op
);
456 this->operands
[0] = op0
;
457 this->operands
[1] = op1
;
458 this->operands
[2] = op2
;
459 this->operands
[3] = NULL
;
461 assert(op
> ir_last_binop
&& op
<= ir_last_triop
);
463 switch (this->operation
) {
466 case ir_triop_bitfield_extract
:
467 case ir_triop_vector_insert
:
468 this->type
= op0
->type
;
473 this->type
= op1
->type
;
477 assert(!"not reached: missing automatic type setup for ir_expression");
478 this->type
= glsl_type::float_type
;
483 ir_expression::get_num_operands(ir_expression_operation op
)
485 assert(op
<= ir_last_opcode
);
487 if (op
<= ir_last_unop
)
490 if (op
<= ir_last_binop
)
493 if (op
<= ir_last_triop
)
496 if (op
<= ir_last_quadop
)
503 static const char *const operator_strs
[] = {
560 "unpackHalf2x16_split_x",
561 "unpackHalf2x16_split_y",
573 "interpolate_at_centroid",
575 "ssbo_unsized_array_length",
604 "packHalf2x16_split",
609 "interpolate_at_offset",
610 "interpolate_at_sample",
621 const char *ir_expression::operator_string(ir_expression_operation op
)
623 assert((unsigned int) op
< ARRAY_SIZE(operator_strs
));
624 assert(ARRAY_SIZE(operator_strs
) == (ir_quadop_vector
+ 1));
625 return operator_strs
[op
];
628 const char *ir_expression::operator_string()
630 return operator_string(this->operation
);
634 depth_layout_string(ir_depth_layout layout
)
637 case ir_depth_layout_none
: return "";
638 case ir_depth_layout_any
: return "depth_any";
639 case ir_depth_layout_greater
: return "depth_greater";
640 case ir_depth_layout_less
: return "depth_less";
641 case ir_depth_layout_unchanged
: return "depth_unchanged";
649 ir_expression_operation
650 ir_expression::get_operator(const char *str
)
652 const int operator_count
= sizeof(operator_strs
) / sizeof(operator_strs
[0]);
653 for (int op
= 0; op
< operator_count
; op
++) {
654 if (strcmp(str
, operator_strs
[op
]) == 0)
655 return (ir_expression_operation
) op
;
657 return (ir_expression_operation
) -1;
661 ir_expression::variable_referenced() const
664 case ir_binop_vector_extract
:
665 case ir_triop_vector_insert
:
666 /* We get these for things like a[0] where a is a vector type. In these
667 * cases we want variable_referenced() to return the actual vector
668 * variable this is wrapping.
670 return operands
[0]->variable_referenced();
672 return ir_rvalue::variable_referenced();
676 ir_constant::ir_constant()
677 : ir_rvalue(ir_type_constant
)
681 ir_constant::ir_constant(const struct glsl_type
*type
,
682 const ir_constant_data
*data
)
683 : ir_rvalue(ir_type_constant
)
685 assert((type
->base_type
>= GLSL_TYPE_UINT
)
686 && (type
->base_type
<= GLSL_TYPE_BOOL
));
689 memcpy(& this->value
, data
, sizeof(this->value
));
692 ir_constant::ir_constant(float f
, unsigned vector_elements
)
693 : ir_rvalue(ir_type_constant
)
695 assert(vector_elements
<= 4);
696 this->type
= glsl_type::get_instance(GLSL_TYPE_FLOAT
, vector_elements
, 1);
697 for (unsigned i
= 0; i
< vector_elements
; i
++) {
698 this->value
.f
[i
] = f
;
700 for (unsigned i
= vector_elements
; i
< 16; i
++) {
701 this->value
.f
[i
] = 0;
705 ir_constant::ir_constant(double d
, unsigned vector_elements
)
706 : ir_rvalue(ir_type_constant
)
708 assert(vector_elements
<= 4);
709 this->type
= glsl_type::get_instance(GLSL_TYPE_DOUBLE
, vector_elements
, 1);
710 for (unsigned i
= 0; i
< vector_elements
; i
++) {
711 this->value
.d
[i
] = d
;
713 for (unsigned i
= vector_elements
; i
< 16; i
++) {
714 this->value
.d
[i
] = 0.0;
718 ir_constant::ir_constant(unsigned int u
, unsigned vector_elements
)
719 : ir_rvalue(ir_type_constant
)
721 assert(vector_elements
<= 4);
722 this->type
= glsl_type::get_instance(GLSL_TYPE_UINT
, vector_elements
, 1);
723 for (unsigned i
= 0; i
< vector_elements
; i
++) {
724 this->value
.u
[i
] = u
;
726 for (unsigned i
= vector_elements
; i
< 16; i
++) {
727 this->value
.u
[i
] = 0;
731 ir_constant::ir_constant(int integer
, unsigned vector_elements
)
732 : ir_rvalue(ir_type_constant
)
734 assert(vector_elements
<= 4);
735 this->type
= glsl_type::get_instance(GLSL_TYPE_INT
, vector_elements
, 1);
736 for (unsigned i
= 0; i
< vector_elements
; i
++) {
737 this->value
.i
[i
] = integer
;
739 for (unsigned i
= vector_elements
; i
< 16; i
++) {
740 this->value
.i
[i
] = 0;
744 ir_constant::ir_constant(bool b
, unsigned vector_elements
)
745 : ir_rvalue(ir_type_constant
)
747 assert(vector_elements
<= 4);
748 this->type
= glsl_type::get_instance(GLSL_TYPE_BOOL
, vector_elements
, 1);
749 for (unsigned i
= 0; i
< vector_elements
; i
++) {
750 this->value
.b
[i
] = b
;
752 for (unsigned i
= vector_elements
; i
< 16; i
++) {
753 this->value
.b
[i
] = false;
757 ir_constant::ir_constant(const ir_constant
*c
, unsigned i
)
758 : ir_rvalue(ir_type_constant
)
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
)
777 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
778 || type
->is_record() || type
->is_array());
780 if (type
->is_array()) {
781 this->array_elements
= ralloc_array(this, ir_constant
*, type
->length
);
783 foreach_in_list(ir_constant
, value
, value_list
) {
784 assert(value
->as_constant() != NULL
);
786 this->array_elements
[i
++] = value
;
791 /* If the constant is a record, the types of each of the entries in
792 * value_list must be a 1-for-1 match with the structure components. Each
793 * entry must also be a constant. Just move the nodes from the value_list
794 * to the list in the ir_constant.
796 /* FINISHME: Should there be some type checking and / or assertions here? */
797 /* FINISHME: Should the new constant take ownership of the nodes from
798 * FINISHME: value_list, or should it make copies?
800 if (type
->is_record()) {
801 value_list
->move_nodes_to(& this->components
);
805 for (unsigned i
= 0; i
< 16; i
++) {
806 this->value
.u
[i
] = 0;
809 ir_constant
*value
= (ir_constant
*) (value_list
->head
);
811 /* Constructors with exactly one scalar argument are special for vectors
812 * and matrices. For vectors, the scalar value is replicated to fill all
813 * the components. For matrices, the scalar fills the components of the
814 * diagonal while the rest is filled with 0.
816 if (value
->type
->is_scalar() && value
->next
->is_tail_sentinel()) {
817 if (type
->is_matrix()) {
818 /* Matrix - fill diagonal (rest is already set to 0) */
819 assert(type
->base_type
== GLSL_TYPE_FLOAT
||
820 type
->base_type
== GLSL_TYPE_DOUBLE
);
821 for (unsigned i
= 0; i
< type
->matrix_columns
; i
++) {
822 if (type
->base_type
== GLSL_TYPE_FLOAT
)
823 this->value
.f
[i
* type
->vector_elements
+ i
] =
826 this->value
.d
[i
* type
->vector_elements
+ i
] =
830 /* Vector or scalar - fill all components */
831 switch (type
->base_type
) {
834 for (unsigned i
= 0; i
< type
->components(); i
++)
835 this->value
.u
[i
] = value
->value
.u
[0];
837 case GLSL_TYPE_FLOAT
:
838 for (unsigned i
= 0; i
< type
->components(); i
++)
839 this->value
.f
[i
] = value
->value
.f
[0];
841 case GLSL_TYPE_DOUBLE
:
842 for (unsigned i
= 0; i
< type
->components(); i
++)
843 this->value
.d
[i
] = value
->value
.d
[0];
846 for (unsigned i
= 0; i
< type
->components(); i
++)
847 this->value
.b
[i
] = value
->value
.b
[0];
850 assert(!"Should not get here.");
857 if (type
->is_matrix() && value
->type
->is_matrix()) {
858 assert(value
->next
->is_tail_sentinel());
860 /* From section 5.4.2 of the GLSL 1.20 spec:
861 * "If a matrix is constructed from a matrix, then each component
862 * (column i, row j) in the result that has a corresponding component
863 * (column i, row j) in the argument will be initialized from there."
865 unsigned cols
= MIN2(type
->matrix_columns
, value
->type
->matrix_columns
);
866 unsigned rows
= MIN2(type
->vector_elements
, value
->type
->vector_elements
);
867 for (unsigned i
= 0; i
< cols
; i
++) {
868 for (unsigned j
= 0; j
< rows
; j
++) {
869 const unsigned src
= i
* value
->type
->vector_elements
+ j
;
870 const unsigned dst
= i
* type
->vector_elements
+ j
;
871 this->value
.f
[dst
] = value
->value
.f
[src
];
875 /* "All other components will be initialized to the identity matrix." */
876 for (unsigned i
= cols
; i
< type
->matrix_columns
; i
++)
877 this->value
.f
[i
* type
->vector_elements
+ i
] = 1.0;
882 /* Use each component from each entry in the value_list to initialize one
883 * component of the constant being constructed.
885 for (unsigned i
= 0; i
< type
->components(); /* empty */) {
886 assert(value
->as_constant() != NULL
);
887 assert(!value
->is_tail_sentinel());
889 for (unsigned j
= 0; j
< value
->type
->components(); j
++) {
890 switch (type
->base_type
) {
892 this->value
.u
[i
] = value
->get_uint_component(j
);
895 this->value
.i
[i
] = value
->get_int_component(j
);
897 case GLSL_TYPE_FLOAT
:
898 this->value
.f
[i
] = value
->get_float_component(j
);
901 this->value
.b
[i
] = value
->get_bool_component(j
);
903 case GLSL_TYPE_DOUBLE
:
904 this->value
.d
[i
] = value
->get_double_component(j
);
907 /* FINISHME: What to do? Exceptions are not the answer.
913 if (i
>= type
->components())
917 value
= (ir_constant
*) value
->next
;
922 ir_constant::zero(void *mem_ctx
, const glsl_type
*type
)
924 assert(type
->is_scalar() || type
->is_vector() || type
->is_matrix()
925 || type
->is_record() || type
->is_array());
927 ir_constant
*c
= new(mem_ctx
) ir_constant
;
929 memset(&c
->value
, 0, sizeof(c
->value
));
931 if (type
->is_array()) {
932 c
->array_elements
= ralloc_array(c
, ir_constant
*, type
->length
);
934 for (unsigned i
= 0; i
< type
->length
; i
++)
935 c
->array_elements
[i
] = ir_constant::zero(c
, type
->fields
.array
);
938 if (type
->is_record()) {
939 for (unsigned i
= 0; i
< type
->length
; i
++) {
940 ir_constant
*comp
= ir_constant::zero(mem_ctx
, type
->fields
.structure
[i
].type
);
941 c
->components
.push_tail(comp
);
949 ir_constant::get_bool_component(unsigned i
) const
951 switch (this->type
->base_type
) {
952 case GLSL_TYPE_UINT
: return this->value
.u
[i
] != 0;
953 case GLSL_TYPE_INT
: return this->value
.i
[i
] != 0;
954 case GLSL_TYPE_FLOAT
: return ((int)this->value
.f
[i
]) != 0;
955 case GLSL_TYPE_BOOL
: return this->value
.b
[i
];
956 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
] != 0.0;
957 default: assert(!"Should not get here."); break;
960 /* Must return something to make the compiler happy. This is clearly an
967 ir_constant::get_float_component(unsigned i
) const
969 switch (this->type
->base_type
) {
970 case GLSL_TYPE_UINT
: return (float) this->value
.u
[i
];
971 case GLSL_TYPE_INT
: return (float) this->value
.i
[i
];
972 case GLSL_TYPE_FLOAT
: return this->value
.f
[i
];
973 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0f
: 0.0f
;
974 case GLSL_TYPE_DOUBLE
: return (float) this->value
.d
[i
];
975 default: assert(!"Should not get here."); break;
978 /* Must return something to make the compiler happy. This is clearly an
985 ir_constant::get_double_component(unsigned i
) const
987 switch (this->type
->base_type
) {
988 case GLSL_TYPE_UINT
: return (double) this->value
.u
[i
];
989 case GLSL_TYPE_INT
: return (double) this->value
.i
[i
];
990 case GLSL_TYPE_FLOAT
: return (double) this->value
.f
[i
];
991 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1.0 : 0.0;
992 case GLSL_TYPE_DOUBLE
: return this->value
.d
[i
];
993 default: assert(!"Should not get here."); break;
996 /* Must return something to make the compiler happy. This is clearly an
1003 ir_constant::get_int_component(unsigned i
) const
1005 switch (this->type
->base_type
) {
1006 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1007 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1008 case GLSL_TYPE_FLOAT
: return (int) this->value
.f
[i
];
1009 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1010 case GLSL_TYPE_DOUBLE
: return (int) this->value
.d
[i
];
1011 default: assert(!"Should not get here."); break;
1014 /* Must return something to make the compiler happy. This is clearly an
1021 ir_constant::get_uint_component(unsigned i
) const
1023 switch (this->type
->base_type
) {
1024 case GLSL_TYPE_UINT
: return this->value
.u
[i
];
1025 case GLSL_TYPE_INT
: return this->value
.i
[i
];
1026 case GLSL_TYPE_FLOAT
: return (unsigned) this->value
.f
[i
];
1027 case GLSL_TYPE_BOOL
: return this->value
.b
[i
] ? 1 : 0;
1028 case GLSL_TYPE_DOUBLE
: return (unsigned) this->value
.d
[i
];
1029 default: assert(!"Should not get here."); break;
1032 /* Must return something to make the compiler happy. This is clearly an
1039 ir_constant::get_array_element(unsigned i
) const
1041 assert(this->type
->is_array());
1043 /* From page 35 (page 41 of the PDF) of the GLSL 1.20 spec:
1045 * "Behavior is undefined if a shader subscripts an array with an index
1046 * less than 0 or greater than or equal to the size the array was
1049 * Most out-of-bounds accesses are removed before things could get this far.
1050 * There are cases where non-constant array index values can get constant
1055 else if (i
>= this->type
->length
)
1056 i
= this->type
->length
- 1;
1058 return array_elements
[i
];
1062 ir_constant::get_record_field(const char *name
)
1064 int idx
= this->type
->field_index(name
);
1069 if (this->components
.is_empty())
1072 exec_node
*node
= this->components
.head
;
1073 for (int i
= 0; i
< idx
; i
++) {
1076 /* If the end of the list is encountered before the element matching the
1077 * requested field is found, return NULL.
1079 if (node
->is_tail_sentinel())
1083 return (ir_constant
*) node
;
1087 ir_constant::copy_offset(ir_constant
*src
, int offset
)
1089 switch (this->type
->base_type
) {
1090 case GLSL_TYPE_UINT
:
1092 case GLSL_TYPE_FLOAT
:
1093 case GLSL_TYPE_DOUBLE
:
1094 case GLSL_TYPE_BOOL
: {
1095 unsigned int size
= src
->type
->components();
1096 assert (size
<= this->type
->components() - offset
);
1097 for (unsigned int i
=0; i
<size
; i
++) {
1098 switch (this->type
->base_type
) {
1099 case GLSL_TYPE_UINT
:
1100 value
.u
[i
+offset
] = src
->get_uint_component(i
);
1103 value
.i
[i
+offset
] = src
->get_int_component(i
);
1105 case GLSL_TYPE_FLOAT
:
1106 value
.f
[i
+offset
] = src
->get_float_component(i
);
1108 case GLSL_TYPE_BOOL
:
1109 value
.b
[i
+offset
] = src
->get_bool_component(i
);
1111 case GLSL_TYPE_DOUBLE
:
1112 value
.d
[i
+offset
] = src
->get_double_component(i
);
1114 default: // Shut up the compiler
1121 case GLSL_TYPE_STRUCT
: {
1122 assert (src
->type
== this->type
);
1123 this->components
.make_empty();
1124 foreach_in_list(ir_constant
, orig
, &src
->components
) {
1125 this->components
.push_tail(orig
->clone(this, NULL
));
1130 case GLSL_TYPE_ARRAY
: {
1131 assert (src
->type
== this->type
);
1132 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1133 this->array_elements
[i
] = src
->array_elements
[i
]->clone(this, NULL
);
1139 assert(!"Should not get here.");
1145 ir_constant::copy_masked_offset(ir_constant
*src
, int offset
, unsigned int mask
)
1147 assert (!type
->is_array() && !type
->is_record());
1149 if (!type
->is_vector() && !type
->is_matrix()) {
1155 for (int i
=0; i
<4; i
++) {
1156 if (mask
& (1 << i
)) {
1157 switch (this->type
->base_type
) {
1158 case GLSL_TYPE_UINT
:
1159 value
.u
[i
+offset
] = src
->get_uint_component(id
++);
1162 value
.i
[i
+offset
] = src
->get_int_component(id
++);
1164 case GLSL_TYPE_FLOAT
:
1165 value
.f
[i
+offset
] = src
->get_float_component(id
++);
1167 case GLSL_TYPE_BOOL
:
1168 value
.b
[i
+offset
] = src
->get_bool_component(id
++);
1170 case GLSL_TYPE_DOUBLE
:
1171 value
.d
[i
+offset
] = src
->get_double_component(id
++);
1174 assert(!"Should not get here.");
1182 ir_constant::has_value(const ir_constant
*c
) const
1184 if (this->type
!= c
->type
)
1187 if (this->type
->is_array()) {
1188 for (unsigned i
= 0; i
< this->type
->length
; i
++) {
1189 if (!this->array_elements
[i
]->has_value(c
->array_elements
[i
]))
1195 if (this->type
->base_type
== GLSL_TYPE_STRUCT
) {
1196 const exec_node
*a_node
= this->components
.head
;
1197 const exec_node
*b_node
= c
->components
.head
;
1199 while (!a_node
->is_tail_sentinel()) {
1200 assert(!b_node
->is_tail_sentinel());
1202 const ir_constant
*const a_field
= (ir_constant
*) a_node
;
1203 const ir_constant
*const b_field
= (ir_constant
*) b_node
;
1205 if (!a_field
->has_value(b_field
))
1208 a_node
= a_node
->next
;
1209 b_node
= b_node
->next
;
1215 for (unsigned i
= 0; i
< this->type
->components(); i
++) {
1216 switch (this->type
->base_type
) {
1217 case GLSL_TYPE_UINT
:
1218 if (this->value
.u
[i
] != c
->value
.u
[i
])
1222 if (this->value
.i
[i
] != c
->value
.i
[i
])
1225 case GLSL_TYPE_FLOAT
:
1226 if (this->value
.f
[i
] != c
->value
.f
[i
])
1229 case GLSL_TYPE_BOOL
:
1230 if (this->value
.b
[i
] != c
->value
.b
[i
])
1233 case GLSL_TYPE_DOUBLE
:
1234 if (this->value
.d
[i
] != c
->value
.d
[i
])
1238 assert(!"Should not get here.");
1247 ir_constant::is_value(float f
, int i
) const
1249 if (!this->type
->is_scalar() && !this->type
->is_vector())
1252 /* Only accept boolean values for 0/1. */
1253 if (int(bool(i
)) != i
&& this->type
->is_boolean())
1256 for (unsigned c
= 0; c
< this->type
->vector_elements
; c
++) {
1257 switch (this->type
->base_type
) {
1258 case GLSL_TYPE_FLOAT
:
1259 if (this->value
.f
[c
] != f
)
1263 if (this->value
.i
[c
] != i
)
1266 case GLSL_TYPE_UINT
:
1267 if (this->value
.u
[c
] != unsigned(i
))
1270 case GLSL_TYPE_BOOL
:
1271 if (this->value
.b
[c
] != bool(i
))
1274 case GLSL_TYPE_DOUBLE
:
1275 if (this->value
.d
[c
] != double(f
))
1279 /* The only other base types are structures, arrays, and samplers.
1280 * Samplers cannot be constants, and the others should have been
1281 * filtered out above.
1283 assert(!"Should not get here.");
1292 ir_constant::is_zero() const
1294 return is_value(0.0, 0);
1298 ir_constant::is_one() const
1300 return is_value(1.0, 1);
1304 ir_constant::is_negative_one() const
1306 return is_value(-1.0, -1);
1310 ir_constant::is_uint16_constant() const
1312 if (!type
->is_integer())
1315 return value
.u
[0] < (1 << 16);
1319 : ir_instruction(ir_type_loop
)
1324 ir_dereference_variable::ir_dereference_variable(ir_variable
*var
)
1325 : ir_dereference(ir_type_dereference_variable
)
1327 assert(var
!= NULL
);
1330 this->type
= var
->type
;
1334 ir_dereference_array::ir_dereference_array(ir_rvalue
*value
,
1335 ir_rvalue
*array_index
)
1336 : ir_dereference(ir_type_dereference_array
)
1338 this->array_index
= array_index
;
1339 this->set_array(value
);
1343 ir_dereference_array::ir_dereference_array(ir_variable
*var
,
1344 ir_rvalue
*array_index
)
1345 : ir_dereference(ir_type_dereference_array
)
1347 void *ctx
= ralloc_parent(var
);
1349 this->array_index
= array_index
;
1350 this->set_array(new(ctx
) ir_dereference_variable(var
));
1355 ir_dereference_array::set_array(ir_rvalue
*value
)
1357 assert(value
!= NULL
);
1359 this->array
= value
;
1361 const glsl_type
*const vt
= this->array
->type
;
1363 if (vt
->is_array()) {
1364 type
= vt
->fields
.array
;
1365 } else if (vt
->is_matrix()) {
1366 type
= vt
->column_type();
1367 } else if (vt
->is_vector()) {
1368 type
= vt
->get_base_type();
1373 ir_dereference_record::ir_dereference_record(ir_rvalue
*value
,
1375 : ir_dereference(ir_type_dereference_record
)
1377 assert(value
!= NULL
);
1379 this->record
= value
;
1380 this->field
= ralloc_strdup(this, field
);
1381 this->type
= this->record
->type
->field_type(field
);
1385 ir_dereference_record::ir_dereference_record(ir_variable
*var
,
1387 : ir_dereference(ir_type_dereference_record
)
1389 void *ctx
= ralloc_parent(var
);
1391 this->record
= new(ctx
) ir_dereference_variable(var
);
1392 this->field
= ralloc_strdup(this, field
);
1393 this->type
= this->record
->type
->field_type(field
);
1397 ir_dereference::is_lvalue() const
1399 ir_variable
*var
= this->variable_referenced();
1401 /* Every l-value derference chain eventually ends in a variable.
1403 if ((var
== NULL
) || var
->data
.read_only
)
1406 /* From section 4.1.7 of the GLSL 4.40 spec:
1408 * "Opaque variables cannot be treated as l-values; hence cannot
1409 * be used as out or inout function parameters, nor can they be
1412 if (this->type
->contains_opaque())
1419 static const char * const tex_opcode_strs
[] = { "tex", "txb", "txl", "txd", "txf", "txf_ms", "txs", "lod", "tg4", "query_levels", "texture_samples", "samples_identical" };
1421 const char *ir_texture::opcode_string()
1423 assert((unsigned int) op
< ARRAY_SIZE(tex_opcode_strs
));
1424 return tex_opcode_strs
[op
];
1428 ir_texture::get_opcode(const char *str
)
1430 const int count
= sizeof(tex_opcode_strs
) / sizeof(tex_opcode_strs
[0]);
1431 for (int op
= 0; op
< count
; op
++) {
1432 if (strcmp(str
, tex_opcode_strs
[op
]) == 0)
1433 return (ir_texture_opcode
) op
;
1435 return (ir_texture_opcode
) -1;
1440 ir_texture::set_sampler(ir_dereference
*sampler
, const glsl_type
*type
)
1442 assert(sampler
!= NULL
);
1443 assert(type
!= NULL
);
1444 this->sampler
= sampler
;
1447 if (this->op
== ir_txs
|| this->op
== ir_query_levels
||
1448 this->op
== ir_texture_samples
) {
1449 assert(type
->base_type
== GLSL_TYPE_INT
);
1450 } else if (this->op
== ir_lod
) {
1451 assert(type
->vector_elements
== 2);
1452 assert(type
->base_type
== GLSL_TYPE_FLOAT
);
1453 } else if (this->op
== ir_samples_identical
) {
1454 assert(type
== glsl_type::bool_type
);
1455 assert(sampler
->type
->base_type
== GLSL_TYPE_SAMPLER
);
1456 assert(sampler
->type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
);
1458 assert(sampler
->type
->sampler_type
== (int) type
->base_type
);
1459 if (sampler
->type
->sampler_shadow
)
1460 assert(type
->vector_elements
== 4 || type
->vector_elements
== 1);
1462 assert(type
->vector_elements
== 4);
1468 ir_swizzle::init_mask(const unsigned *comp
, unsigned count
)
1470 assert((count
>= 1) && (count
<= 4));
1472 memset(&this->mask
, 0, sizeof(this->mask
));
1473 this->mask
.num_components
= count
;
1475 unsigned dup_mask
= 0;
1478 assert(comp
[3] <= 3);
1479 dup_mask
|= (1U << comp
[3])
1480 & ((1U << comp
[0]) | (1U << comp
[1]) | (1U << comp
[2]));
1481 this->mask
.w
= comp
[3];
1484 assert(comp
[2] <= 3);
1485 dup_mask
|= (1U << comp
[2])
1486 & ((1U << comp
[0]) | (1U << comp
[1]));
1487 this->mask
.z
= comp
[2];
1490 assert(comp
[1] <= 3);
1491 dup_mask
|= (1U << comp
[1])
1492 & ((1U << comp
[0]));
1493 this->mask
.y
= comp
[1];
1496 assert(comp
[0] <= 3);
1497 this->mask
.x
= comp
[0];
1500 this->mask
.has_duplicates
= dup_mask
!= 0;
1502 /* Based on the number of elements in the swizzle and the base type
1503 * (i.e., float, int, unsigned, or bool) of the vector being swizzled,
1504 * generate the type of the resulting value.
1506 type
= glsl_type::get_instance(val
->type
->base_type
, mask
.num_components
, 1);
1509 ir_swizzle::ir_swizzle(ir_rvalue
*val
, unsigned x
, unsigned y
, unsigned z
,
1510 unsigned w
, unsigned count
)
1511 : ir_rvalue(ir_type_swizzle
), val(val
)
1513 const unsigned components
[4] = { x
, y
, z
, w
};
1514 this->init_mask(components
, count
);
1517 ir_swizzle::ir_swizzle(ir_rvalue
*val
, const unsigned *comp
,
1519 : ir_rvalue(ir_type_swizzle
), val(val
)
1521 this->init_mask(comp
, count
);
1524 ir_swizzle::ir_swizzle(ir_rvalue
*val
, ir_swizzle_mask mask
)
1525 : ir_rvalue(ir_type_swizzle
)
1529 this->type
= glsl_type::get_instance(val
->type
->base_type
,
1530 mask
.num_components
, 1);
1539 ir_swizzle::create(ir_rvalue
*val
, const char *str
, unsigned vector_length
)
1541 void *ctx
= ralloc_parent(val
);
1543 /* For each possible swizzle character, this table encodes the value in
1544 * \c idx_map that represents the 0th element of the vector. For invalid
1545 * swizzle characters (e.g., 'k'), a special value is used that will allow
1546 * detection of errors.
1548 static const unsigned char base_idx
[26] = {
1549 /* a b c d e f g h i j k l m */
1550 R
, R
, I
, I
, I
, I
, R
, I
, I
, I
, I
, I
, I
,
1551 /* n o p q r s t u v w x y z */
1552 I
, I
, S
, S
, R
, S
, S
, I
, I
, X
, X
, X
, X
1555 /* Each valid swizzle character has an entry in the previous table. This
1556 * table encodes the base index encoded in the previous table plus the actual
1557 * index of the swizzle character. When processing swizzles, the first
1558 * character in the string is indexed in the previous table. Each character
1559 * in the string is indexed in this table, and the value found there has the
1560 * value form the first table subtracted. The result must be on the range
1563 * For example, the string "wzyx" will get X from the first table. Each of
1564 * the charcaters will get X+3, X+2, X+1, and X+0 from this table. After
1565 * subtraction, the swizzle values are { 3, 2, 1, 0 }.
1567 * The string "wzrg" will get X from the first table. Each of the characters
1568 * will get X+3, X+2, R+0, and R+1 from this table. After subtraction, the
1569 * swizzle values are { 3, 2, 4, 5 }. Since 4 and 5 are outside the range
1570 * [0,3], the error is detected.
1572 static const unsigned char idx_map
[26] = {
1573 /* a b c d e f g h i j k l m */
1574 R
+3, R
+2, 0, 0, 0, 0, R
+1, 0, 0, 0, 0, 0, 0,
1575 /* n o p q r s t u v w x y z */
1576 0, 0, S
+2, S
+3, R
+0, S
+0, S
+1, 0, 0, X
+3, X
+0, X
+1, X
+2
1579 int swiz_idx
[4] = { 0, 0, 0, 0 };
1583 /* Validate the first character in the swizzle string and look up the base
1584 * index value as described above.
1586 if ((str
[0] < 'a') || (str
[0] > 'z'))
1589 const unsigned base
= base_idx
[str
[0] - 'a'];
1592 for (i
= 0; (i
< 4) && (str
[i
] != '\0'); i
++) {
1593 /* Validate the next character, and, as described above, convert it to a
1596 if ((str
[i
] < 'a') || (str
[i
] > 'z'))
1599 swiz_idx
[i
] = idx_map
[str
[i
] - 'a'] - base
;
1600 if ((swiz_idx
[i
] < 0) || (swiz_idx
[i
] >= (int) vector_length
))
1607 return new(ctx
) ir_swizzle(val
, swiz_idx
[0], swiz_idx
[1], swiz_idx
[2],
1617 ir_swizzle::variable_referenced() const
1619 return this->val
->variable_referenced();
1623 bool ir_variable::temporaries_allocate_names
= false;
1625 const char ir_variable::tmp_name
[] = "compiler_temp";
1627 ir_variable::ir_variable(const struct glsl_type
*type
, const char *name
,
1628 ir_variable_mode mode
)
1629 : ir_instruction(ir_type_variable
)
1633 if (mode
== ir_var_temporary
&& !ir_variable::temporaries_allocate_names
)
1636 /* The ir_variable clone method may call this constructor with name set to
1640 || mode
== ir_var_temporary
1641 || mode
== ir_var_function_in
1642 || mode
== ir_var_function_out
1643 || mode
== ir_var_function_inout
);
1644 assert(name
!= ir_variable::tmp_name
1645 || mode
== ir_var_temporary
);
1646 if (mode
== ir_var_temporary
1647 && (name
== NULL
|| name
== ir_variable::tmp_name
)) {
1648 this->name
= ir_variable::tmp_name
;
1650 this->name
= ralloc_strdup(this, name
);
1653 this->u
.max_ifc_array_access
= NULL
;
1655 this->data
.explicit_location
= false;
1656 this->data
.has_initializer
= false;
1657 this->data
.location
= -1;
1658 this->data
.location_frac
= 0;
1659 this->data
.binding
= 0;
1660 this->data
.warn_extension_index
= 0;
1661 this->constant_value
= NULL
;
1662 this->constant_initializer
= NULL
;
1663 this->data
.origin_upper_left
= false;
1664 this->data
.pixel_center_integer
= false;
1665 this->data
.depth_layout
= ir_depth_layout_none
;
1666 this->data
.used
= false;
1667 this->data
.always_active_io
= false;
1668 this->data
.read_only
= false;
1669 this->data
.centroid
= false;
1670 this->data
.sample
= false;
1671 this->data
.patch
= false;
1672 this->data
.invariant
= false;
1673 this->data
.how_declared
= ir_var_declared_normally
;
1674 this->data
.mode
= mode
;
1675 this->data
.interpolation
= INTERP_QUALIFIER_NONE
;
1676 this->data
.max_array_access
= 0;
1677 this->data
.atomic
.offset
= 0;
1678 this->data
.precision
= GLSL_PRECISION_NONE
;
1679 this->data
.image_read_only
= false;
1680 this->data
.image_write_only
= false;
1681 this->data
.image_coherent
= false;
1682 this->data
.image_volatile
= false;
1683 this->data
.image_restrict
= false;
1684 this->data
.from_ssbo_unsized_array
= false;
1687 if (type
->base_type
== GLSL_TYPE_SAMPLER
)
1688 this->data
.read_only
= true;
1690 if (type
->is_interface())
1691 this->init_interface_type(type
);
1692 else if (type
->without_array()->is_interface())
1693 this->init_interface_type(type
->without_array());
1699 interpolation_string(unsigned interpolation
)
1701 switch (interpolation
) {
1702 case INTERP_QUALIFIER_NONE
: return "no";
1703 case INTERP_QUALIFIER_SMOOTH
: return "smooth";
1704 case INTERP_QUALIFIER_FLAT
: return "flat";
1705 case INTERP_QUALIFIER_NOPERSPECTIVE
: return "noperspective";
1708 assert(!"Should not get here.");
1713 glsl_interp_qualifier
1714 ir_variable::determine_interpolation_mode(bool flat_shade
)
1716 if (this->data
.interpolation
!= INTERP_QUALIFIER_NONE
)
1717 return (glsl_interp_qualifier
) this->data
.interpolation
;
1718 int location
= this->data
.location
;
1720 location
== VARYING_SLOT_COL0
|| location
== VARYING_SLOT_COL1
;
1721 if (flat_shade
&& is_gl_Color
)
1722 return INTERP_QUALIFIER_FLAT
;
1724 return INTERP_QUALIFIER_SMOOTH
;
1727 const char *const ir_variable::warn_extension_table
[] = {
1729 "GL_ARB_shader_stencil_export",
1730 "GL_AMD_shader_stencil_export",
1734 ir_variable::enable_extension_warning(const char *extension
)
1736 for (unsigned i
= 0; i
< ARRAY_SIZE(warn_extension_table
); i
++) {
1737 if (strcmp(warn_extension_table
[i
], extension
) == 0) {
1738 this->data
.warn_extension_index
= i
;
1743 assert(!"Should not get here.");
1744 this->data
.warn_extension_index
= 0;
1748 ir_variable::get_extension_warning() const
1750 return this->data
.warn_extension_index
== 0
1751 ? NULL
: warn_extension_table
[this->data
.warn_extension_index
];
1754 ir_function_signature::ir_function_signature(const glsl_type
*return_type
,
1755 builtin_available_predicate b
)
1756 : ir_instruction(ir_type_function_signature
),
1757 return_type(return_type
), is_defined(false), is_intrinsic(false),
1758 builtin_avail(b
), _function(NULL
)
1760 this->origin
= NULL
;
1765 ir_function_signature::is_builtin() const
1767 return builtin_avail
!= NULL
;
1772 ir_function_signature::is_builtin_available(const _mesa_glsl_parse_state
*state
) const
1774 /* We can't call the predicate without a state pointer, so just say that
1775 * the signature is available. At compile time, we need the filtering,
1776 * but also receive a valid state pointer. At link time, we're resolving
1777 * imported built-in prototypes to their definitions, which will always
1778 * be an exact match. So we can skip the filtering.
1783 assert(builtin_avail
!= NULL
);
1784 return builtin_avail(state
);
1789 modes_match(unsigned a
, unsigned b
)
1794 /* Accept "in" vs. "const in" */
1795 if ((a
== ir_var_const_in
&& b
== ir_var_function_in
) ||
1796 (b
== ir_var_const_in
&& a
== ir_var_function_in
))
1804 ir_function_signature::qualifiers_match(exec_list
*params
)
1806 /* check that the qualifiers match. */
1807 foreach_two_lists(a_node
, &this->parameters
, b_node
, params
) {
1808 ir_variable
*a
= (ir_variable
*) a_node
;
1809 ir_variable
*b
= (ir_variable
*) b_node
;
1811 if (a
->data
.read_only
!= b
->data
.read_only
||
1812 !modes_match(a
->data
.mode
, b
->data
.mode
) ||
1813 a
->data
.interpolation
!= b
->data
.interpolation
||
1814 a
->data
.centroid
!= b
->data
.centroid
||
1815 a
->data
.sample
!= b
->data
.sample
||
1816 a
->data
.patch
!= b
->data
.patch
||
1817 a
->data
.image_read_only
!= b
->data
.image_read_only
||
1818 a
->data
.image_write_only
!= b
->data
.image_write_only
||
1819 a
->data
.image_coherent
!= b
->data
.image_coherent
||
1820 a
->data
.image_volatile
!= b
->data
.image_volatile
||
1821 a
->data
.image_restrict
!= b
->data
.image_restrict
) {
1823 /* parameter a's qualifiers don't match */
1832 ir_function_signature::replace_parameters(exec_list
*new_params
)
1834 /* Destroy all of the previous parameter information. If the previous
1835 * parameter information comes from the function prototype, it may either
1836 * specify incorrect parameter names or not have names at all.
1838 new_params
->move_nodes_to(¶meters
);
1842 ir_function::ir_function(const char *name
)
1843 : ir_instruction(ir_type_function
)
1845 this->subroutine_index
= -1;
1846 this->name
= ralloc_strdup(this, name
);
1851 ir_function::has_user_signature()
1853 foreach_in_list(ir_function_signature
, sig
, &this->signatures
) {
1854 if (!sig
->is_builtin())
1862 ir_rvalue::error_value(void *mem_ctx
)
1864 ir_rvalue
*v
= new(mem_ctx
) ir_rvalue(ir_type_unset
);
1866 v
->type
= glsl_type::error_type
;
1872 visit_exec_list(exec_list
*list
, ir_visitor
*visitor
)
1874 foreach_in_list_safe(ir_instruction
, node
, list
) {
1875 node
->accept(visitor
);
1881 steal_memory(ir_instruction
*ir
, void *new_ctx
)
1883 ir_variable
*var
= ir
->as_variable();
1884 ir_function
*fn
= ir
->as_function();
1885 ir_constant
*constant
= ir
->as_constant();
1886 if (var
!= NULL
&& var
->constant_value
!= NULL
)
1887 steal_memory(var
->constant_value
, ir
);
1889 if (var
!= NULL
&& var
->constant_initializer
!= NULL
)
1890 steal_memory(var
->constant_initializer
, ir
);
1892 if (fn
!= NULL
&& fn
->subroutine_types
)
1893 ralloc_steal(new_ctx
, fn
->subroutine_types
);
1895 /* The components of aggregate constants are not visited by the normal
1896 * visitor, so steal their values by hand.
1898 if (constant
!= NULL
) {
1899 if (constant
->type
->is_record()) {
1900 foreach_in_list(ir_constant
, field
, &constant
->components
) {
1901 steal_memory(field
, ir
);
1903 } else if (constant
->type
->is_array()) {
1904 for (unsigned int i
= 0; i
< constant
->type
->length
; i
++) {
1905 steal_memory(constant
->array_elements
[i
], ir
);
1910 ralloc_steal(new_ctx
, ir
);
1915 reparent_ir(exec_list
*list
, void *mem_ctx
)
1917 foreach_in_list(ir_instruction
, node
, list
) {
1918 visit_tree(node
, steal_memory
, mem_ctx
);
1924 try_min_one(ir_rvalue
*ir
)
1926 ir_expression
*expr
= ir
->as_expression();
1928 if (!expr
|| expr
->operation
!= ir_binop_min
)
1931 if (expr
->operands
[0]->is_one())
1932 return expr
->operands
[1];
1934 if (expr
->operands
[1]->is_one())
1935 return expr
->operands
[0];
1941 try_max_zero(ir_rvalue
*ir
)
1943 ir_expression
*expr
= ir
->as_expression();
1945 if (!expr
|| expr
->operation
!= ir_binop_max
)
1948 if (expr
->operands
[0]->is_zero())
1949 return expr
->operands
[1];
1951 if (expr
->operands
[1]->is_zero())
1952 return expr
->operands
[0];
1958 ir_rvalue::as_rvalue_to_saturate()
1960 ir_expression
*expr
= this->as_expression();
1965 ir_rvalue
*max_zero
= try_max_zero(expr
);
1967 return try_min_one(max_zero
);
1969 ir_rvalue
*min_one
= try_min_one(expr
);
1971 return try_max_zero(min_one
);
1980 vertices_per_prim(GLenum prim
)
1989 case GL_LINES_ADJACENCY
:
1991 case GL_TRIANGLES_ADJACENCY
:
1994 assert(!"Bad primitive");
2000 * Generate a string describing the mode of a variable
2003 mode_string(const ir_variable
*var
)
2005 switch (var
->data
.mode
) {
2007 return (var
->data
.read_only
) ? "global constant" : "global variable";
2009 case ir_var_uniform
:
2012 case ir_var_shader_storage
:
2015 case ir_var_shader_in
:
2016 return "shader input";
2018 case ir_var_shader_out
:
2019 return "shader output";
2021 case ir_var_function_in
:
2022 case ir_var_const_in
:
2023 return "function input";
2025 case ir_var_function_out
:
2026 return "function output";
2028 case ir_var_function_inout
:
2029 return "function inout";
2031 case ir_var_system_value
:
2032 return "shader input";
2034 case ir_var_temporary
:
2035 return "compiler temporary";
2037 case ir_var_mode_count
:
2041 assert(!"Should not get here.");
2042 return "invalid variable";