3 * Copyright © 2009 Intel Corporation
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
31 #include "shader_enums.h"
33 #include "c11/threads.h"
36 #include "main/config.h"
45 struct _mesa_glsl_parse_state
;
46 struct glsl_symbol_table
;
49 _mesa_glsl_initialize_types(struct _mesa_glsl_parse_state
*state
);
52 _mesa_glsl_release_types(void);
54 void encode_type_to_blob(struct blob
*blob
, const struct glsl_type
*type
);
56 const struct glsl_type
*decode_type_from_blob(struct blob_reader
*blob
);
63 /* Note: GLSL_TYPE_UINT, GLSL_TYPE_INT, and GLSL_TYPE_FLOAT must be 0, 1,
64 * and 2 so that they will fit in the 2 bits of glsl_type::sampled_type.
80 GLSL_TYPE_ATOMIC_UINT
,
90 static inline bool glsl_base_type_is_16bit(enum glsl_base_type type
)
92 return type
== GLSL_TYPE_FLOAT16
||
93 type
== GLSL_TYPE_UINT16
||
94 type
== GLSL_TYPE_INT16
;
97 static inline bool glsl_base_type_is_64bit(enum glsl_base_type type
)
99 return type
== GLSL_TYPE_DOUBLE
||
100 type
== GLSL_TYPE_UINT64
||
101 type
== GLSL_TYPE_INT64
||
102 type
== GLSL_TYPE_IMAGE
||
103 type
== GLSL_TYPE_SAMPLER
;
106 static inline bool glsl_base_type_is_integer(enum glsl_base_type type
)
108 return type
== GLSL_TYPE_UINT
||
109 type
== GLSL_TYPE_INT
||
110 type
== GLSL_TYPE_UINT64
||
111 type
== GLSL_TYPE_INT64
||
112 type
== GLSL_TYPE_BOOL
||
113 type
== GLSL_TYPE_SAMPLER
||
114 type
== GLSL_TYPE_IMAGE
;
117 enum glsl_sampler_dim
{
118 GLSL_SAMPLER_DIM_1D
= 0,
121 GLSL_SAMPLER_DIM_CUBE
,
122 GLSL_SAMPLER_DIM_RECT
,
123 GLSL_SAMPLER_DIM_BUF
,
124 GLSL_SAMPLER_DIM_EXTERNAL
,
126 GLSL_SAMPLER_DIM_SUBPASS
, /* for vulkan input attachments */
127 GLSL_SAMPLER_DIM_SUBPASS_MS
, /* for multisampled vulkan input attachments */
130 enum glsl_matrix_layout
{
132 * The layout of the matrix is inherited from the object containing the
133 * matrix (the top level structure or the uniform block).
135 GLSL_MATRIX_LAYOUT_INHERITED
,
138 * Explicit column-major layout
140 * If a uniform block doesn't have an explicit layout set, it will default
143 GLSL_MATRIX_LAYOUT_COLUMN_MAJOR
,
148 GLSL_MATRIX_LAYOUT_ROW_MAJOR
152 GLSL_PRECISION_NONE
= 0,
154 GLSL_PRECISION_MEDIUM
,
160 #include "util/ralloc.h"
161 #include "main/menums.h" /* for gl_texture_index, C++'s enum rules are broken */
165 glsl_base_type base_type
:8;
167 glsl_base_type sampled_type
:8; /**< Type of data returned using this
168 * sampler or image. Only \c
169 * GLSL_TYPE_FLOAT, \c GLSL_TYPE_INT,
170 * and \c GLSL_TYPE_UINT are valid.
173 unsigned sampler_dimensionality
:4; /**< \see glsl_sampler_dim */
174 unsigned sampler_shadow
:1;
175 unsigned sampler_array
:1;
176 unsigned interface_packing
:2;
177 unsigned interface_row_major
:1;
180 glsl_type() : mem_ctx(NULL
)
182 // Dummy constructor, just for the sake of ASSERT_BITFIELD_SIZE.
187 * \name Vector and matrix element counts
189 * For scalars, each of these values will be 1. For non-numeric types
193 uint8_t vector_elements
; /**< 1, 2, 3, or 4 vector elements. */
194 uint8_t matrix_columns
; /**< 1, 2, 3, or 4 matrix columns. */
198 * For \c GLSL_TYPE_ARRAY, this is the length of the array. For
199 * \c GLSL_TYPE_STRUCT or \c GLSL_TYPE_INTERFACE, it is the number of
200 * elements in the structure and the number of values pointed to by
201 * \c fields.structure (below).
206 * Name of the data type
208 * Will never be \c NULL.
213 * Explicit array, matrix, or vector stride. This is used to communicate
214 * explicit array layouts from SPIR-V. Should be 0 if the type has no
217 unsigned explicit_stride
;
220 * Subtype of composite data types.
223 const struct glsl_type
*array
; /**< Type of array elements. */
224 struct glsl_function_param
*parameters
; /**< Parameters to function. */
225 struct glsl_struct_field
*structure
; /**< List of struct fields. */
229 * \name Pointers to various public type singletons
233 #define DECL_TYPE(NAME, ...) \
234 static const glsl_type *const NAME##_type;
236 #define STRUCT_TYPE(NAME) \
237 static const glsl_type *const struct_##NAME##_type;
238 #include "compiler/builtin_type_macros.h"
242 * Convenience accessors for vector types (shorter than get_instance()).
245 static const glsl_type
*vec(unsigned components
, const glsl_type
*const ts
[]);
246 static const glsl_type
*vec(unsigned components
);
247 static const glsl_type
*f16vec(unsigned components
);
248 static const glsl_type
*dvec(unsigned components
);
249 static const glsl_type
*ivec(unsigned components
);
250 static const glsl_type
*uvec(unsigned components
);
251 static const glsl_type
*bvec(unsigned components
);
252 static const glsl_type
*i64vec(unsigned components
);
253 static const glsl_type
*u64vec(unsigned components
);
254 static const glsl_type
*i16vec(unsigned components
);
255 static const glsl_type
*u16vec(unsigned components
);
256 static const glsl_type
*i8vec(unsigned components
);
257 static const glsl_type
*u8vec(unsigned components
);
261 * For numeric and boolean derived types returns the basic scalar type
263 * If the type is a numeric or boolean scalar, vector, or matrix type,
264 * this function gets the scalar type of the individual components. For
265 * all other types, including arrays of numeric or boolean types, the
266 * error type is returned.
268 const glsl_type
*get_base_type() const;
271 * Get the basic scalar type which this type aggregates.
273 * If the type is a numeric or boolean scalar, vector, or matrix, or an
274 * array of any of those, this function gets the scalar type of the
275 * individual components. For structs and arrays of structs, this function
276 * returns the struct type. For samplers and arrays of samplers, this
277 * function returns the sampler type.
279 const glsl_type
*get_scalar_type() const;
282 * Gets the "bare" type without any decorations or layout information.
284 const glsl_type
*get_bare_type() const;
287 * Get the instance of a built-in scalar, vector, or matrix type
289 static const glsl_type
*get_instance(unsigned base_type
, unsigned rows
,
291 unsigned explicit_stride
= 0,
292 bool row_major
= false);
295 * Get the instance of a sampler type
297 static const glsl_type
*get_sampler_instance(enum glsl_sampler_dim dim
,
300 glsl_base_type type
);
302 static const glsl_type
*get_image_instance(enum glsl_sampler_dim dim
,
303 bool array
, glsl_base_type type
);
306 * Get the instance of an array type
308 static const glsl_type
*get_array_instance(const glsl_type
*base
,
310 unsigned explicit_stride
= 0);
313 * Get the instance of a record type
315 static const glsl_type
*get_record_instance(const glsl_struct_field
*fields
,
320 * Get the instance of an interface block type
322 static const glsl_type
*get_interface_instance(const glsl_struct_field
*fields
,
324 enum glsl_interface_packing packing
,
326 const char *block_name
);
329 * Get the instance of an subroutine type
331 static const glsl_type
*get_subroutine_instance(const char *subroutine_name
);
334 * Get the instance of a function type
336 static const glsl_type
*get_function_instance(const struct glsl_type
*return_type
,
337 const glsl_function_param
*parameters
,
338 unsigned num_params
);
341 * Get the type resulting from a multiplication of \p type_a * \p type_b
343 static const glsl_type
*get_mul_type(const glsl_type
*type_a
,
344 const glsl_type
*type_b
);
347 * Query the total number of scalars that make up a scalar, vector or matrix
349 unsigned components() const
351 return vector_elements
* matrix_columns
;
355 * Calculate the number of components slots required to hold this type
357 * This is used to determine how many uniform or varying locations a type
360 unsigned component_slots() const;
363 * Calculate offset between the base location of the struct in
364 * uniform storage and a struct member.
365 * For the initial call, length is the index of the member to find the
368 unsigned record_location_offset(unsigned length
) const;
371 * Calculate the number of unique values from glGetUniformLocation for the
372 * elements of the type.
374 * This is used to allocate slots in the UniformRemapTable, the amount of
375 * locations may not match with actual used storage space by the driver.
377 unsigned uniform_locations() const;
380 * Used to count the number of varyings contained in the type ignoring
381 * innermost array elements.
383 unsigned varying_count() const;
386 * Calculate the number of attribute slots required to hold this type
388 * This implements the language rules of GLSL 1.50 for counting the number
389 * of slots used by a vertex attribute. It also determines the number of
390 * varying slots the type will use up in the absence of varying packing
391 * (and thus, it can be used to measure the number of varying slots used by
392 * the varyings that are generated by lower_packed_varyings).
394 * For vertex shader attributes - doubles only take one slot.
395 * For inter-shader varyings - dvec3/dvec4 take two slots.
397 * Vulkan doesn’t make this distinction so the argument should always be
400 unsigned count_attribute_slots(bool is_gl_vertex_input
) const;
403 * Alignment in bytes of the start of this type in a std140 uniform
406 unsigned std140_base_alignment(bool row_major
) const;
408 /** Size in bytes of this type in a std140 uniform block.
410 * Note that this is not GL_UNIFORM_SIZE (which is the number of
411 * elements in the array)
413 unsigned std140_size(bool row_major
) const;
416 * Alignment in bytes of the start of this type in a std430 shader
419 unsigned std430_base_alignment(bool row_major
) const;
422 * Calculate array stride in bytes of this type in a std430 shader storage
425 unsigned std430_array_stride(bool row_major
) const;
428 * Size in bytes of this type in a std430 shader storage block.
430 * Note that this is not GL_BUFFER_SIZE
432 unsigned std430_size(bool row_major
) const;
435 * \brief Can this type be implicitly converted to another?
437 * \return True if the types are identical or if this type can be converted
438 * to \c desired according to Section 4.1.10 of the GLSL spec.
441 * From page 25 (31 of the pdf) of the GLSL 1.50 spec, Section 4.1.10
442 * Implicit Conversions:
444 * In some situations, an expression and its type will be implicitly
445 * converted to a different type. The following table shows all allowed
446 * implicit conversions:
448 * Type of expression | Can be implicitly converted to
449 * --------------------------------------------------
462 * There are no implicit array or structure conversions. For example,
463 * an array of int cannot be implicitly converted to an array of float.
464 * There are no implicit conversions between signed and unsigned
468 bool can_implicitly_convert_to(const glsl_type
*desired
,
469 _mesa_glsl_parse_state
*state
) const;
472 * Query whether or not a type is a scalar (non-vector and non-matrix).
474 bool is_scalar() const
476 return (vector_elements
== 1)
477 && (base_type
>= GLSL_TYPE_UINT
)
478 && (base_type
<= GLSL_TYPE_IMAGE
);
482 * Query whether or not a type is a vector
484 bool is_vector() const
486 return (vector_elements
> 1)
487 && (matrix_columns
== 1)
488 && (base_type
>= GLSL_TYPE_UINT
)
489 && (base_type
<= GLSL_TYPE_BOOL
);
493 * Query whether or not a type is a matrix
495 bool is_matrix() const
497 /* GLSL only has float matrices. */
498 return (matrix_columns
> 1) && (base_type
== GLSL_TYPE_FLOAT
||
499 base_type
== GLSL_TYPE_DOUBLE
||
500 base_type
== GLSL_TYPE_FLOAT16
);
504 * Query whether or not a type is a non-array numeric type
506 bool is_numeric() const
508 return (base_type
>= GLSL_TYPE_UINT
) && (base_type
<= GLSL_TYPE_INT64
);
512 * Query whether or not a type is an integral type
514 bool is_integer() const
516 return (base_type
== GLSL_TYPE_UINT
) || (base_type
== GLSL_TYPE_INT
);
520 * Query whether or not a type is a 64-bit integer.
522 bool is_integer_64() const
524 return base_type
== GLSL_TYPE_UINT64
|| base_type
== GLSL_TYPE_INT64
;
528 * Query whether or not a type is a 32-bit or 64-bit integer
530 bool is_integer_32_64() const
532 return is_integer() || is_integer_64();
536 * Query whether or not type is an integral type, or for struct and array
537 * types, contains an integral type.
539 bool contains_integer() const;
542 * Query whether or not type is a double type, or for struct, interface and
543 * array types, contains a double type.
545 bool contains_double() const;
548 * Query whether or not type is a 64-bit type, or for struct, interface and
549 * array types, contains a double type.
551 bool contains_64bit() const;
554 * Query whether or not a type is a float type
556 bool is_float() const
558 return base_type
== GLSL_TYPE_FLOAT
;
562 * Query whether or not a type is a double type
564 bool is_double() const
566 return base_type
== GLSL_TYPE_DOUBLE
;
570 * Query whether a 64-bit type takes two slots.
572 bool is_dual_slot() const
574 return is_64bit() && vector_elements
> 2;
578 * Query whether or not a type is 64-bit
580 bool is_64bit() const
582 return glsl_base_type_is_64bit(base_type
);
586 * Query whether or not a type is 16-bit
588 bool is_16bit() const
590 return glsl_base_type_is_16bit(base_type
);
594 * Query whether or not a type is 32-bit
596 bool is_32bit() const
598 return base_type
== GLSL_TYPE_UINT
||
599 base_type
== GLSL_TYPE_INT
||
600 base_type
== GLSL_TYPE_FLOAT
;
604 * Query whether or not a type is a non-array boolean type
606 bool is_boolean() const
608 return base_type
== GLSL_TYPE_BOOL
;
612 * Query whether or not a type is a sampler
614 bool is_sampler() const
616 return base_type
== GLSL_TYPE_SAMPLER
;
620 * Query whether or not type is a sampler, or for struct, interface and
621 * array types, contains a sampler.
623 bool contains_sampler() const;
626 * Query whether or not type is an array or for struct, interface and
627 * array types, contains an array.
629 bool contains_array() const;
632 * Get the Mesa texture target index for a sampler type.
634 gl_texture_index
sampler_index() const;
637 * Query whether or not type is an image, or for struct, interface and
638 * array types, contains an image.
640 bool contains_image() const;
643 * Query whether or not a type is an image
645 bool is_image() const
647 return base_type
== GLSL_TYPE_IMAGE
;
651 * Query whether or not a type is an array
653 bool is_array() const
655 return base_type
== GLSL_TYPE_ARRAY
;
658 bool is_array_of_arrays() const
660 return is_array() && fields
.array
->is_array();
664 * Query whether or not a type is a record
666 bool is_record() const
668 return base_type
== GLSL_TYPE_STRUCT
;
672 * Query whether or not a type is an interface
674 bool is_interface() const
676 return base_type
== GLSL_TYPE_INTERFACE
;
680 * Query whether or not a type is the void type singleton.
684 return base_type
== GLSL_TYPE_VOID
;
688 * Query whether or not a type is the error type singleton.
690 bool is_error() const
692 return base_type
== GLSL_TYPE_ERROR
;
696 * Query if a type is unnamed/anonymous (named by the parser)
699 bool is_subroutine() const
701 return base_type
== GLSL_TYPE_SUBROUTINE
;
703 bool contains_subroutine() const;
705 bool is_anonymous() const
707 return !strncmp(name
, "#anon", 5);
711 * Get the type stripped of any arrays
714 * Pointer to the type of elements of the first non-array type for array
715 * types, or pointer to itself for non-array types.
717 const glsl_type
*without_array() const
719 const glsl_type
*t
= this;
721 while (t
->is_array())
728 * Return the total number of elements in an array including the elements
729 * in arrays of arrays.
731 unsigned arrays_of_arrays_size() const
736 unsigned size
= length
;
737 const glsl_type
*base_type
= fields
.array
;
739 while (base_type
->is_array()) {
740 size
= size
* base_type
->length
;
741 base_type
= base_type
->fields
.array
;
747 * Query whether or not a type is an atomic_uint.
749 bool is_atomic_uint() const
751 return base_type
== GLSL_TYPE_ATOMIC_UINT
;
755 * Return the amount of atomic counter storage required for a type.
757 unsigned atomic_size() const
759 if (is_atomic_uint())
760 return ATOMIC_COUNTER_SIZE
;
762 return length
* fields
.array
->atomic_size();
768 * Return whether a type contains any atomic counters.
770 bool contains_atomic() const
772 return atomic_size() > 0;
776 * Return whether a type contains any opaque types.
778 bool contains_opaque() const;
781 * Query the full type of a matrix row
784 * If the type is not a matrix, \c glsl_type::error_type is returned.
785 * Otherwise a type matching the rows of the matrix is returned.
787 const glsl_type
*row_type() const
792 if (explicit_stride
&& !interface_row_major
)
793 return get_instance(base_type
, matrix_columns
, 1, explicit_stride
);
795 return get_instance(base_type
, matrix_columns
, 1);
799 * Query the full type of a matrix column
802 * If the type is not a matrix, \c glsl_type::error_type is returned.
803 * Otherwise a type matching the columns of the matrix is returned.
805 const glsl_type
*column_type() const
810 if (explicit_stride
&& interface_row_major
)
811 return get_instance(base_type
, vector_elements
, 1, explicit_stride
);
813 return get_instance(base_type
, vector_elements
, 1);
817 * Get the type of a structure field
820 * Pointer to the type of the named field. If the type is not a structure
821 * or the named field does not exist, \c glsl_type::error_type is returned.
823 const glsl_type
*field_type(const char *name
) const;
826 * Get the location of a field within a record type
828 int field_index(const char *name
) const;
831 * Query the number of elements in an array type
834 * The number of elements in the array for array types or -1 for non-array
835 * types. If the number of elements in the array has not yet been declared,
838 int array_size() const
840 return is_array() ? length
: -1;
844 * Query whether the array size for all dimensions has been declared.
846 bool is_unsized_array() const
848 return is_array() && length
== 0;
852 * Return the number of coordinate components needed for this
853 * sampler or image type.
855 * This is based purely on the sampler's dimensionality. For example, this
856 * returns 1 for sampler1D, and 3 for sampler2DArray.
858 * Note that this is often different than actual coordinate type used in
859 * a texturing built-in function, since those pack additional values (such
860 * as the shadow comparator or projector) into the coordinate type.
862 int coordinate_components() const;
865 * Compare a record type against another record type.
867 * This is useful for matching record types declared across shader stages.
868 * The option to not match locations is to deal with places where the
869 * same struct is defined in a block which has a location set on it.
871 bool record_compare(const glsl_type
*b
, bool match_locations
= true) const;
874 * Get the type interface packing.
876 enum glsl_interface_packing
get_interface_packing() const
878 return (enum glsl_interface_packing
)interface_packing
;
882 * Get the type interface packing used internally. For shared and packing
883 * layouts this is implementation defined.
885 enum glsl_interface_packing
get_internal_ifc_packing(bool std430_supported
) const
887 enum glsl_interface_packing packing
= this->get_interface_packing();
888 if (packing
== GLSL_INTERFACE_PACKING_STD140
||
889 (!std430_supported
&&
890 (packing
== GLSL_INTERFACE_PACKING_SHARED
||
891 packing
== GLSL_INTERFACE_PACKING_PACKED
))) {
892 return GLSL_INTERFACE_PACKING_STD140
;
894 assert(packing
== GLSL_INTERFACE_PACKING_STD430
||
896 (packing
== GLSL_INTERFACE_PACKING_SHARED
||
897 packing
== GLSL_INTERFACE_PACKING_PACKED
)));
898 return GLSL_INTERFACE_PACKING_STD430
;
903 * Check if the type interface is row major
905 bool get_interface_row_major() const
907 return (bool) interface_row_major
;
914 static mtx_t hash_mutex
;
917 * ralloc context for the type itself.
921 /** Constructor for vector and matrix types */
922 glsl_type(GLenum gl_type
,
923 glsl_base_type base_type
, unsigned vector_elements
,
924 unsigned matrix_columns
, const char *name
,
925 unsigned explicit_stride
= 0, bool row_major
= false);
927 /** Constructor for sampler or image types */
928 glsl_type(GLenum gl_type
, glsl_base_type base_type
,
929 enum glsl_sampler_dim dim
, bool shadow
, bool array
,
930 glsl_base_type type
, const char *name
);
932 /** Constructor for record types */
933 glsl_type(const glsl_struct_field
*fields
, unsigned num_fields
,
936 /** Constructor for interface types */
937 glsl_type(const glsl_struct_field
*fields
, unsigned num_fields
,
938 enum glsl_interface_packing packing
,
939 bool row_major
, const char *name
);
941 /** Constructor for interface types */
942 glsl_type(const glsl_type
*return_type
,
943 const glsl_function_param
*params
, unsigned num_params
);
945 /** Constructors for array types */
946 glsl_type(const glsl_type
*array
, unsigned length
, unsigned explicit_stride
);
948 /** Constructor for subroutine types */
949 glsl_type(const char *name
);
951 /** Hash table containing the known explicit matrix and vector types. */
952 static struct hash_table
*explicit_matrix_types
;
954 /** Hash table containing the known array types. */
955 static struct hash_table
*array_types
;
957 /** Hash table containing the known record types. */
958 static struct hash_table
*record_types
;
960 /** Hash table containing the known interface types. */
961 static struct hash_table
*interface_types
;
963 /** Hash table containing the known subroutine types. */
964 static struct hash_table
*subroutine_types
;
966 /** Hash table containing the known function types. */
967 static struct hash_table
*function_types
;
969 static bool record_key_compare(const void *a
, const void *b
);
970 static unsigned record_key_hash(const void *key
);
973 * \name Built-in type flyweights
977 #define DECL_TYPE(NAME, ...) static const glsl_type _##NAME##_type;
979 #define STRUCT_TYPE(NAME) static const glsl_type _struct_##NAME##_type;
980 #include "compiler/builtin_type_macros.h"
984 * \name Friend functions.
986 * These functions are friends because they must have C linkage and the
987 * need to call various private methods or access various private static
991 friend void _mesa_glsl_initialize_types(struct _mesa_glsl_parse_state
*);
992 friend void _mesa_glsl_release_types(void);
998 #endif /* __cplusplus */
1000 struct glsl_struct_field
{
1001 const struct glsl_type
*type
;
1005 * For interface blocks, gl_varying_slot corresponding to the input/output
1006 * if this is a built-in input/output (i.e. a member of the built-in
1007 * gl_PerVertex interface block); -1 otherwise.
1009 * Ignored for structs.
1014 * For interface blocks, members may have an explicit byte offset
1015 * specified; -1 otherwise. Also used for xfb_offset layout qualifier.
1017 * Unless used for xfb_offset this field is ignored for structs.
1022 * For interface blocks, members may define a transform feedback buffer;
1028 * For interface blocks, members may define a transform feedback stride;
1034 * For interface blocks, the interpolation mode (as in
1035 * ir_variable::interpolation). 0 otherwise.
1037 unsigned interpolation
:2;
1040 * For interface blocks, 1 if this variable uses centroid interpolation (as
1041 * in ir_variable::centroid). 0 otherwise.
1043 unsigned centroid
:1;
1046 * For interface blocks, 1 if this variable uses sample interpolation (as
1047 * in ir_variable::sample). 0 otherwise.
1052 * Layout of the matrix. Uses glsl_matrix_layout values.
1054 unsigned matrix_layout
:2;
1057 * For interface blocks, 1 if this variable is a per-patch input or output
1058 * (as in ir_variable::patch). 0 otherwise.
1063 * Precision qualifier
1065 unsigned precision
:2;
1068 * Memory qualifiers, applicable to buffer variables defined in shader
1069 * storage buffer objects (SSBOs)
1071 unsigned memory_read_only
:1;
1072 unsigned memory_write_only
:1;
1073 unsigned memory_coherent
:1;
1074 unsigned memory_volatile
:1;
1075 unsigned memory_restrict
:1;
1078 * Layout format, applicable to image variables only.
1080 unsigned image_format
:16;
1083 * Any of the xfb_* qualifiers trigger the shader to be in transform
1084 * feedback mode so we need to keep track of whether the buffer was
1085 * explicitly set or if its just been assigned the default global value.
1087 unsigned explicit_xfb_buffer
:1;
1089 unsigned implicit_sized_array
:1;
1091 glsl_struct_field(const struct glsl_type
*_type
, const char *_name
)
1092 : type(_type
), name(_name
), location(-1), offset(-1), xfb_buffer(0),
1093 xfb_stride(0), interpolation(0), centroid(0),
1094 sample(0), matrix_layout(GLSL_MATRIX_LAYOUT_INHERITED
), patch(0),
1095 precision(GLSL_PRECISION_NONE
), memory_read_only(0),
1096 memory_write_only(0), memory_coherent(0), memory_volatile(0),
1097 memory_restrict(0), image_format(0), explicit_xfb_buffer(0),
1098 implicit_sized_array(0)
1104 : type(NULL
), name(NULL
), location(-1), offset(-1), xfb_buffer(0),
1105 xfb_stride(0), interpolation(0), centroid(0),
1106 sample(0), matrix_layout(0), patch(0),
1107 precision(0), memory_read_only(0),
1108 memory_write_only(0), memory_coherent(0), memory_volatile(0),
1109 memory_restrict(0), image_format(0), explicit_xfb_buffer(0),
1110 implicit_sized_array(0)
1117 struct glsl_function_param
{
1118 const struct glsl_type
*type
;
1124 static inline unsigned int
1125 glsl_align(unsigned int a
, unsigned int align
)
1127 return (a
+ align
- 1) / align
* align
;
1130 #endif /* GLSL_TYPES_H */