2 * Copyright © 2009 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.
26 #include "main/core.h" /* for Elements */
27 #include "glsl_symbol_table.h"
28 #include "glsl_parser_extras.h"
29 #include "glsl_types.h"
30 #include "builtin_types.h"
32 #include "program/hash_table.h"
35 hash_table
*glsl_type::array_types
= NULL
;
36 hash_table
*glsl_type::record_types
= NULL
;
37 void *glsl_type::mem_ctx
= NULL
;
40 glsl_type::init_ralloc_type_ctx(void)
42 if (glsl_type::mem_ctx
== NULL
) {
43 glsl_type::mem_ctx
= ralloc_autofree_context();
44 assert(glsl_type::mem_ctx
!= NULL
);
48 glsl_type::glsl_type(GLenum gl_type
,
49 glsl_base_type base_type
, unsigned vector_elements
,
50 unsigned matrix_columns
, const char *name
) :
53 sampler_dimensionality(0), sampler_shadow(0), sampler_array(0),
55 vector_elements(vector_elements
), matrix_columns(matrix_columns
),
58 init_ralloc_type_ctx();
59 this->name
= ralloc_strdup(this->mem_ctx
, name
);
60 /* Neither dimension is zero or both dimensions are zero.
62 assert((vector_elements
== 0) == (matrix_columns
== 0));
63 memset(& fields
, 0, sizeof(fields
));
66 glsl_type::glsl_type(GLenum gl_type
,
67 enum glsl_sampler_dim dim
, bool shadow
, bool array
,
68 unsigned type
, const char *name
) :
70 base_type(GLSL_TYPE_SAMPLER
),
71 sampler_dimensionality(dim
), sampler_shadow(shadow
),
72 sampler_array(array
), sampler_type(type
),
73 vector_elements(0), matrix_columns(0),
76 init_ralloc_type_ctx();
77 this->name
= ralloc_strdup(this->mem_ctx
, name
);
78 memset(& fields
, 0, sizeof(fields
));
81 glsl_type::glsl_type(const glsl_struct_field
*fields
, unsigned num_fields
,
83 base_type(GLSL_TYPE_STRUCT
),
84 sampler_dimensionality(0), sampler_shadow(0), sampler_array(0),
86 vector_elements(0), matrix_columns(0),
91 init_ralloc_type_ctx();
92 this->name
= ralloc_strdup(this->mem_ctx
, name
);
93 this->fields
.structure
= ralloc_array(this->mem_ctx
,
94 glsl_struct_field
, length
);
95 for (i
= 0; i
< length
; i
++) {
96 this->fields
.structure
[i
].type
= fields
[i
].type
;
97 this->fields
.structure
[i
].name
= ralloc_strdup(this->fields
.structure
,
103 add_types_to_symbol_table(glsl_symbol_table
*symtab
,
104 const struct glsl_type
*types
,
105 unsigned num_types
, bool warn
,
110 for (unsigned i
= 0; i
< num_types
; i
++) {
111 if (skip_1d
&& types
[i
].base_type
== GLSL_TYPE_SAMPLER
112 && types
[i
].sampler_dimensionality
== GLSL_SAMPLER_DIM_1D
)
115 symtab
->add_type(types
[i
].name
, & types
[i
]);
120 glsl_type::contains_sampler() const
122 if (this->is_array()) {
123 return this->fields
.array
->contains_sampler();
124 } else if (this->is_record()) {
125 for (unsigned int i
= 0; i
< this->length
; i
++) {
126 if (this->fields
.structure
[i
].type
->contains_sampler())
131 return this->is_sampler();
136 glsl_type::sampler_index() const
138 const glsl_type
*const t
= (this->is_array()) ? this->fields
.array
: this;
140 assert(t
->is_sampler());
142 switch (t
->sampler_dimensionality
) {
143 case GLSL_SAMPLER_DIM_1D
:
144 return (t
->sampler_array
) ? TEXTURE_1D_ARRAY_INDEX
: TEXTURE_1D_INDEX
;
145 case GLSL_SAMPLER_DIM_2D
:
146 return (t
->sampler_array
) ? TEXTURE_2D_ARRAY_INDEX
: TEXTURE_2D_INDEX
;
147 case GLSL_SAMPLER_DIM_3D
:
148 return TEXTURE_3D_INDEX
;
149 case GLSL_SAMPLER_DIM_CUBE
:
150 return (t
->sampler_array
) ? TEXTURE_CUBE_ARRAY_INDEX
: TEXTURE_CUBE_INDEX
;
151 case GLSL_SAMPLER_DIM_RECT
:
152 return TEXTURE_RECT_INDEX
;
153 case GLSL_SAMPLER_DIM_BUF
:
154 return TEXTURE_BUFFER_INDEX
;
155 case GLSL_SAMPLER_DIM_EXTERNAL
:
156 return TEXTURE_EXTERNAL_INDEX
;
158 assert(!"Should not get here.");
159 return TEXTURE_BUFFER_INDEX
;
164 glsl_type::generate_100ES_types(glsl_symbol_table
*symtab
)
166 bool skip_1d
= false;
167 add_types_to_symbol_table(symtab
, builtin_core_types
,
168 Elements(builtin_core_types
),
170 add_types_to_symbol_table(symtab
, builtin_structure_types
,
171 Elements(builtin_structure_types
),
173 add_types_to_symbol_table(symtab
, void_type
, 1, false, skip_1d
);
177 glsl_type::generate_300ES_types(glsl_symbol_table
*symtab
)
179 /* GLSL 3.00 ES types are the same as GLSL 1.30 types, except that 1D
180 * samplers are skipped, and samplerCubeShadow is added.
182 bool add_deprecated
= false;
185 generate_130_types(symtab
, add_deprecated
, skip_1d
);
187 add_types_to_symbol_table(symtab
, &_samplerCubeShadow_type
, 1, false,
192 glsl_type::generate_110_types(glsl_symbol_table
*symtab
, bool add_deprecated
,
195 generate_100ES_types(symtab
);
197 add_types_to_symbol_table(symtab
, builtin_110_types
,
198 Elements(builtin_110_types
),
200 add_types_to_symbol_table(symtab
, &_sampler3D_type
, 1, false, skip_1d
);
201 if (add_deprecated
) {
202 add_types_to_symbol_table(symtab
, builtin_110_deprecated_structure_types
,
203 Elements(builtin_110_deprecated_structure_types
),
210 glsl_type::generate_120_types(glsl_symbol_table
*symtab
, bool add_deprecated
,
213 generate_110_types(symtab
, add_deprecated
, skip_1d
);
215 add_types_to_symbol_table(symtab
, builtin_120_types
,
216 Elements(builtin_120_types
), false, skip_1d
);
221 glsl_type::generate_130_types(glsl_symbol_table
*symtab
, bool add_deprecated
,
224 generate_120_types(symtab
, add_deprecated
, skip_1d
);
226 add_types_to_symbol_table(symtab
, builtin_130_types
,
227 Elements(builtin_130_types
), false, skip_1d
);
228 generate_EXT_texture_array_types(symtab
, false);
233 glsl_type::generate_140_types(glsl_symbol_table
*symtab
)
235 bool skip_1d
= false;
237 generate_130_types(symtab
, false, skip_1d
);
239 add_types_to_symbol_table(symtab
, builtin_140_types
,
240 Elements(builtin_140_types
), false, skip_1d
);
242 add_types_to_symbol_table(symtab
, builtin_EXT_texture_buffer_object_types
,
243 Elements(builtin_EXT_texture_buffer_object_types
),
249 glsl_type::generate_ARB_texture_rectangle_types(glsl_symbol_table
*symtab
,
252 bool skip_1d
= false;
254 add_types_to_symbol_table(symtab
, builtin_ARB_texture_rectangle_types
,
255 Elements(builtin_ARB_texture_rectangle_types
),
261 glsl_type::generate_EXT_texture_array_types(glsl_symbol_table
*symtab
,
264 bool skip_1d
= false;
266 add_types_to_symbol_table(symtab
, builtin_EXT_texture_array_types
,
267 Elements(builtin_EXT_texture_array_types
),
273 glsl_type::generate_OES_texture_3D_types(glsl_symbol_table
*symtab
, bool warn
)
275 bool skip_1d
= false;
277 add_types_to_symbol_table(symtab
, &_sampler3D_type
, 1, warn
, skip_1d
);
282 glsl_type::generate_OES_EGL_image_external_types(glsl_symbol_table
*symtab
,
285 bool skip_1d
= false;
287 add_types_to_symbol_table(symtab
, builtin_OES_EGL_image_external_types
,
288 Elements(builtin_OES_EGL_image_external_types
),
293 glsl_type::generate_ARB_texture_cube_map_array_types(glsl_symbol_table
*symtab
,
296 bool skip_1d
= false;
298 add_types_to_symbol_table(symtab
, builtin_ARB_texture_cube_map_array_types
,
299 Elements(builtin_ARB_texture_cube_map_array_types
),
304 _mesa_glsl_initialize_types(struct _mesa_glsl_parse_state
*state
)
306 if (state
->es_shader
) {
307 switch (state
->language_version
) {
309 assert(state
->es_shader
);
310 glsl_type::generate_100ES_types(state
->symbols
);
313 glsl_type::generate_300ES_types(state
->symbols
);
316 assert(!"Unexpected language version");
320 bool skip_1d
= false;
321 switch (state
->language_version
) {
323 glsl_type::generate_110_types(state
->symbols
, true, skip_1d
);
326 glsl_type::generate_120_types(state
->symbols
, true, skip_1d
);
329 glsl_type::generate_130_types(state
->symbols
, true, skip_1d
);
332 glsl_type::generate_140_types(state
->symbols
);
335 assert(!"Unexpected language version");
340 if (state
->ARB_texture_rectangle_enable
||
341 state
->is_version(140, 0)) {
342 glsl_type::generate_ARB_texture_rectangle_types(state
->symbols
,
343 state
->ARB_texture_rectangle_warn
);
345 if (state
->OES_texture_3D_enable
346 && state
->is_version(0, 100)) {
347 glsl_type::generate_OES_texture_3D_types(state
->symbols
,
348 state
->OES_texture_3D_warn
);
351 if (state
->EXT_texture_array_enable
352 && !state
->is_version(130, 0)) {
353 // These are already included in 130; don't create twice.
354 glsl_type::generate_EXT_texture_array_types(state
->symbols
,
355 state
->EXT_texture_array_warn
);
358 /* We cannot check for language_version == 100 here because we need the
359 * types to support fixed-function program generation. But this is fine
360 * since the extension is never enabled for OpenGL contexts.
362 if (state
->OES_EGL_image_external_enable
) {
363 glsl_type::generate_OES_EGL_image_external_types(state
->symbols
,
364 state
->OES_EGL_image_external_warn
);
367 if (state
->ARB_texture_cube_map_array_enable
) {
368 glsl_type::generate_ARB_texture_cube_map_array_types(state
->symbols
,
369 state
->ARB_texture_cube_map_array_warn
);
374 const glsl_type
*glsl_type::get_base_type() const
381 case GLSL_TYPE_FLOAT
:
391 const glsl_type
*glsl_type::get_scalar_type() const
393 const glsl_type
*type
= this;
396 while (type
->base_type
== GLSL_TYPE_ARRAY
)
397 type
= type
->fields
.array
;
399 /* Handle vectors and matrices */
400 switch (type
->base_type
) {
405 case GLSL_TYPE_FLOAT
:
408 /* Handle everything else */
415 _mesa_glsl_release_types(void)
417 if (glsl_type::array_types
!= NULL
) {
418 hash_table_dtor(glsl_type::array_types
);
419 glsl_type::array_types
= NULL
;
422 if (glsl_type::record_types
!= NULL
) {
423 hash_table_dtor(glsl_type::record_types
);
424 glsl_type::record_types
= NULL
;
429 glsl_type::glsl_type(const glsl_type
*array
, unsigned length
) :
430 base_type(GLSL_TYPE_ARRAY
),
431 sampler_dimensionality(0), sampler_shadow(0), sampler_array(0),
433 vector_elements(0), matrix_columns(0),
434 name(NULL
), length(length
)
436 this->fields
.array
= array
;
437 /* Inherit the gl type of the base. The GL type is used for
438 * uniform/statevar handling in Mesa and the arrayness of the type
439 * is represented by the size rather than the type.
441 this->gl_type
= array
->gl_type
;
443 /* Allow a maximum of 10 characters for the array size. This is enough
444 * for 32-bits of ~0. The extra 3 are for the '[', ']', and terminating
447 const unsigned name_length
= strlen(array
->name
) + 10 + 3;
448 char *const n
= (char *) ralloc_size(this->mem_ctx
, name_length
);
451 snprintf(n
, name_length
, "%s[]", array
->name
);
453 snprintf(n
, name_length
, "%s[%u]", array
->name
, length
);
460 glsl_type::get_instance(unsigned base_type
, unsigned rows
, unsigned columns
)
462 if (base_type
== GLSL_TYPE_VOID
)
465 if ((rows
< 1) || (rows
> 4) || (columns
< 1) || (columns
> 4))
468 /* Treat GLSL vectors as Nx1 matrices.
473 return uint_type
+ (rows
- 1);
475 return int_type
+ (rows
- 1);
476 case GLSL_TYPE_FLOAT
:
477 return float_type
+ (rows
- 1);
479 return bool_type
+ (rows
- 1);
484 if ((base_type
!= GLSL_TYPE_FLOAT
) || (rows
== 1))
487 /* GLSL matrix types are named mat{COLUMNS}x{ROWS}. Only the following
488 * combinations are valid:
496 #define IDX(c,r) (((c-1)*3) + (r-1))
498 switch (IDX(columns
, rows
)) {
499 case IDX(2,2): return mat2_type
;
500 case IDX(2,3): return mat2x3_type
;
501 case IDX(2,4): return mat2x4_type
;
502 case IDX(3,2): return mat3x2_type
;
503 case IDX(3,3): return mat3_type
;
504 case IDX(3,4): return mat3x4_type
;
505 case IDX(4,2): return mat4x2_type
;
506 case IDX(4,3): return mat4x3_type
;
507 case IDX(4,4): return mat4_type
;
508 default: return error_type
;
512 assert(!"Should not get here.");
518 glsl_type::get_array_instance(const glsl_type
*base
, unsigned array_size
)
521 if (array_types
== NULL
) {
522 array_types
= hash_table_ctor(64, hash_table_string_hash
,
523 hash_table_string_compare
);
526 /* Generate a name using the base type pointer in the key. This is
527 * done because the name of the base type may not be unique across
528 * shaders. For example, two shaders may have different record types
532 snprintf(key
, sizeof(key
), "%p[%u]", (void *) base
, array_size
);
534 const glsl_type
*t
= (glsl_type
*) hash_table_find(array_types
, key
);
536 t
= new glsl_type(base
, array_size
);
538 hash_table_insert(array_types
, (void *) t
, ralloc_strdup(mem_ctx
, key
));
541 assert(t
->base_type
== GLSL_TYPE_ARRAY
);
542 assert(t
->length
== array_size
);
543 assert(t
->fields
.array
== base
);
550 glsl_type::record_key_compare(const void *a
, const void *b
)
552 const glsl_type
*const key1
= (glsl_type
*) a
;
553 const glsl_type
*const key2
= (glsl_type
*) b
;
555 /* Return zero is the types match (there is zero difference) or non-zero
558 if (strcmp(key1
->name
, key2
->name
) != 0)
561 if (key1
->length
!= key2
->length
)
564 for (unsigned i
= 0; i
< key1
->length
; i
++) {
565 if (key1
->fields
.structure
[i
].type
!= key2
->fields
.structure
[i
].type
)
567 if (strcmp(key1
->fields
.structure
[i
].name
,
568 key2
->fields
.structure
[i
].name
) != 0)
577 glsl_type::record_key_hash(const void *a
)
579 const glsl_type
*const key
= (glsl_type
*) a
;
583 size
= snprintf(hash_key
, sizeof(hash_key
), "%08x", key
->length
);
585 for (unsigned i
= 0; i
< key
->length
; i
++) {
586 if (size
>= sizeof(hash_key
))
589 size
+= snprintf(& hash_key
[size
], sizeof(hash_key
) - size
,
590 "%p", (void *) key
->fields
.structure
[i
].type
);
593 return hash_table_string_hash(& hash_key
);
598 glsl_type::get_record_instance(const glsl_struct_field
*fields
,
602 const glsl_type
key(fields
, num_fields
, name
);
604 if (record_types
== NULL
) {
605 record_types
= hash_table_ctor(64, record_key_hash
, record_key_compare
);
608 const glsl_type
*t
= (glsl_type
*) hash_table_find(record_types
, & key
);
610 t
= new glsl_type(fields
, num_fields
, name
);
612 hash_table_insert(record_types
, (void *) t
, t
);
615 assert(t
->base_type
== GLSL_TYPE_STRUCT
);
616 assert(t
->length
== num_fields
);
617 assert(strcmp(t
->name
, name
) == 0);
624 glsl_type::field_type(const char *name
) const
626 if (this->base_type
!= GLSL_TYPE_STRUCT
)
629 for (unsigned i
= 0; i
< this->length
; i
++) {
630 if (strcmp(name
, this->fields
.structure
[i
].name
) == 0)
631 return this->fields
.structure
[i
].type
;
639 glsl_type::field_index(const char *name
) const
641 if (this->base_type
!= GLSL_TYPE_STRUCT
)
644 for (unsigned i
= 0; i
< this->length
; i
++) {
645 if (strcmp(name
, this->fields
.structure
[i
].name
) == 0)
654 glsl_type::component_slots() const
656 switch (this->base_type
) {
659 case GLSL_TYPE_FLOAT
:
661 return this->components();
663 case GLSL_TYPE_STRUCT
: {
666 for (unsigned i
= 0; i
< this->length
; i
++)
667 size
+= this->fields
.structure
[i
].type
->component_slots();
672 case GLSL_TYPE_ARRAY
:
673 return this->length
* this->fields
.array
->component_slots();
681 glsl_type::can_implicitly_convert_to(const glsl_type
*desired
) const
686 /* There is no conversion among matrix types. */
687 if (this->matrix_columns
> 1 || desired
->matrix_columns
> 1)
690 /* int and uint can be converted to float. */
691 return desired
->is_float()
692 && this->is_integer()
693 && this->vector_elements
== desired
->vector_elements
;
697 glsl_type::std140_base_alignment(bool row_major
) const
699 /* (1) If the member is a scalar consuming <N> basic machine units, the
700 * base alignment is <N>.
702 * (2) If the member is a two- or four-component vector with components
703 * consuming <N> basic machine units, the base alignment is 2<N> or
704 * 4<N>, respectively.
706 * (3) If the member is a three-component vector with components consuming
707 * <N> basic machine units, the base alignment is 4<N>.
709 if (this->is_scalar() || this->is_vector()) {
710 switch (this->vector_elements
) {
721 /* (4) If the member is an array of scalars or vectors, the base alignment
722 * and array stride are set to match the base alignment of a single
723 * array element, according to rules (1), (2), and (3), and rounded up
724 * to the base alignment of a vec4. The array may have padding at the
725 * end; the base offset of the member following the array is rounded up
726 * to the next multiple of the base alignment.
728 * (6) If the member is an array of <S> column-major matrices with <C>
729 * columns and <R> rows, the matrix is stored identically to a row of
730 * <S>*<C> column vectors with <R> components each, according to rule
733 * (8) If the member is an array of <S> row-major matrices with <C> columns
734 * and <R> rows, the matrix is stored identically to a row of <S>*<R>
735 * row vectors with <C> components each, according to rule (4).
737 * (10) If the member is an array of <S> structures, the <S> elements of
738 * the array are laid out in order, according to rule (9).
740 if (this->is_array()) {
741 if (this->fields
.array
->is_scalar() ||
742 this->fields
.array
->is_vector() ||
743 this->fields
.array
->is_matrix()) {
744 return MAX2(this->fields
.array
->std140_base_alignment(row_major
), 16);
746 assert(this->fields
.array
->is_record());
747 return this->fields
.array
->std140_base_alignment(row_major
);
751 /* (5) If the member is a column-major matrix with <C> columns and
752 * <R> rows, the matrix is stored identically to an array of
753 * <C> column vectors with <R> components each, according to
756 * (7) If the member is a row-major matrix with <C> columns and <R>
757 * rows, the matrix is stored identically to an array of <R>
758 * row vectors with <C> components each, according to rule (4).
760 if (this->is_matrix()) {
761 const struct glsl_type
*vec_type
, *array_type
;
762 int c
= this->matrix_columns
;
763 int r
= this->vector_elements
;
766 vec_type
= get_instance(GLSL_TYPE_FLOAT
, c
, 1);
767 array_type
= glsl_type::get_array_instance(vec_type
, r
);
769 vec_type
= get_instance(GLSL_TYPE_FLOAT
, r
, 1);
770 array_type
= glsl_type::get_array_instance(vec_type
, c
);
773 return array_type
->std140_base_alignment(false);
776 /* (9) If the member is a structure, the base alignment of the
777 * structure is <N>, where <N> is the largest base alignment
778 * value of any of its members, and rounded up to the base
779 * alignment of a vec4. The individual members of this
780 * sub-structure are then assigned offsets by applying this set
781 * of rules recursively, where the base offset of the first
782 * member of the sub-structure is equal to the aligned offset
783 * of the structure. The structure may have padding at the end;
784 * the base offset of the member following the sub-structure is
785 * rounded up to the next multiple of the base alignment of the
788 if (this->is_record()) {
789 unsigned base_alignment
= 16;
790 for (unsigned i
= 0; i
< this->length
; i
++) {
791 const struct glsl_type
*field_type
= this->fields
.structure
[i
].type
;
792 base_alignment
= MAX2(base_alignment
,
793 field_type
->std140_base_alignment(row_major
));
795 return base_alignment
;
798 assert(!"not reached");
803 align(unsigned val
, unsigned align
)
805 return (val
+ align
- 1) / align
* align
;
809 glsl_type::std140_size(bool row_major
) const
811 /* (1) If the member is a scalar consuming <N> basic machine units, the
812 * base alignment is <N>.
814 * (2) If the member is a two- or four-component vector with components
815 * consuming <N> basic machine units, the base alignment is 2<N> or
816 * 4<N>, respectively.
818 * (3) If the member is a three-component vector with components consuming
819 * <N> basic machine units, the base alignment is 4<N>.
821 if (this->is_scalar() || this->is_vector()) {
822 return this->vector_elements
* 4;
825 /* (5) If the member is a column-major matrix with <C> columns and
826 * <R> rows, the matrix is stored identically to an array of
827 * <C> column vectors with <R> components each, according to
830 * (6) If the member is an array of <S> column-major matrices with <C>
831 * columns and <R> rows, the matrix is stored identically to a row of
832 * <S>*<C> column vectors with <R> components each, according to rule
835 * (7) If the member is a row-major matrix with <C> columns and <R>
836 * rows, the matrix is stored identically to an array of <R>
837 * row vectors with <C> components each, according to rule (4).
839 * (8) If the member is an array of <S> row-major matrices with <C> columns
840 * and <R> rows, the matrix is stored identically to a row of <S>*<R>
841 * row vectors with <C> components each, according to rule (4).
843 if (this->is_matrix() || (this->is_array() &&
844 this->fields
.array
->is_matrix())) {
845 const struct glsl_type
*element_type
;
846 const struct glsl_type
*vec_type
;
847 unsigned int array_len
;
849 if (this->is_array()) {
850 element_type
= this->fields
.array
;
851 array_len
= this->length
;
858 vec_type
= get_instance(GLSL_TYPE_FLOAT
,
859 element_type
->matrix_columns
, 1);
860 array_len
*= element_type
->vector_elements
;
862 vec_type
= get_instance(GLSL_TYPE_FLOAT
,
863 element_type
->vector_elements
, 1);
864 array_len
*= element_type
->matrix_columns
;
866 const glsl_type
*array_type
= glsl_type::get_array_instance(vec_type
,
869 return array_type
->std140_size(false);
872 /* (4) If the member is an array of scalars or vectors, the base alignment
873 * and array stride are set to match the base alignment of a single
874 * array element, according to rules (1), (2), and (3), and rounded up
875 * to the base alignment of a vec4. The array may have padding at the
876 * end; the base offset of the member following the array is rounded up
877 * to the next multiple of the base alignment.
879 * (10) If the member is an array of <S> structures, the <S> elements of
880 * the array are laid out in order, according to rule (9).
882 if (this->is_array()) {
883 if (this->fields
.array
->is_record()) {
884 return this->length
* this->fields
.array
->std140_size(row_major
);
886 unsigned element_base_align
=
887 this->fields
.array
->std140_base_alignment(row_major
);
888 return this->length
* MAX2(element_base_align
, 16);
892 /* (9) If the member is a structure, the base alignment of the
893 * structure is <N>, where <N> is the largest base alignment
894 * value of any of its members, and rounded up to the base
895 * alignment of a vec4. The individual members of this
896 * sub-structure are then assigned offsets by applying this set
897 * of rules recursively, where the base offset of the first
898 * member of the sub-structure is equal to the aligned offset
899 * of the structure. The structure may have padding at the end;
900 * the base offset of the member following the sub-structure is
901 * rounded up to the next multiple of the base alignment of the
904 if (this->is_record()) {
906 for (unsigned i
= 0; i
< this->length
; i
++) {
907 const struct glsl_type
*field_type
= this->fields
.structure
[i
].type
;
908 unsigned align
= field_type
->std140_base_alignment(row_major
);
909 size
= (size
+ align
- 1) / align
* align
;
910 size
+= field_type
->std140_size(row_major
);
913 this->fields
.structure
[0].type
->std140_base_alignment(row_major
));
917 assert(!"not reached");