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author | marha <marha@users.sourceforge.net> | 2011-02-01 10:46:14 +0000 |
---|---|---|
committer | marha <marha@users.sourceforge.net> | 2011-02-01 10:46:14 +0000 |
commit | d4a8565009962e162d86a9c4ae24062a3fa12025 (patch) | |
tree | bcd249c3c523b23a6350b1d6b5a2cff7518cdb0e /mesalib/src/glsl/glsl_types.h | |
parent | 6751d9898be671d253d6f7b0806cd4b10daaaf85 (diff) | |
parent | 0bf07d32cbd460220c67d726900772cf3692746d (diff) | |
download | vcxsrv-d4a8565009962e162d86a9c4ae24062a3fa12025.tar.gz vcxsrv-d4a8565009962e162d86a9c4ae24062a3fa12025.tar.bz2 vcxsrv-d4a8565009962e162d86a9c4ae24062a3fa12025.zip |
svn merge ^/branches/released .
Diffstat (limited to 'mesalib/src/glsl/glsl_types.h')
-rw-r--r-- | mesalib/src/glsl/glsl_types.h | 951 |
1 files changed, 476 insertions, 475 deletions
diff --git a/mesalib/src/glsl/glsl_types.h b/mesalib/src/glsl/glsl_types.h index 310747f57..ab6858faa 100644 --- a/mesalib/src/glsl/glsl_types.h +++ b/mesalib/src/glsl/glsl_types.h @@ -1,475 +1,476 @@ -/* -*- c++ -*- */
-/*
- * Copyright © 2009 Intel Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-
-#pragma once
-#ifndef GLSL_TYPES_H
-#define GLSL_TYPES_H
-
-#include <cstring>
-#include <cassert>
-
-extern "C" {
-#include "GL/gl.h"
-#include <talloc.h>
-}
-
-struct _mesa_glsl_parse_state;
-struct glsl_symbol_table;
-
-extern "C" void
-_mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state);
-
-extern "C" void
-_mesa_glsl_release_types(void);
-
-enum glsl_base_type {
- GLSL_TYPE_UINT = 0,
- GLSL_TYPE_INT,
- GLSL_TYPE_FLOAT,
- GLSL_TYPE_BOOL,
- GLSL_TYPE_SAMPLER,
- GLSL_TYPE_STRUCT,
- GLSL_TYPE_ARRAY,
- GLSL_TYPE_VOID,
- GLSL_TYPE_ERROR
-};
-
-enum glsl_sampler_dim {
- GLSL_SAMPLER_DIM_1D = 0,
- GLSL_SAMPLER_DIM_2D,
- GLSL_SAMPLER_DIM_3D,
- GLSL_SAMPLER_DIM_CUBE,
- GLSL_SAMPLER_DIM_RECT,
- GLSL_SAMPLER_DIM_BUF
-};
-
-
-struct glsl_type {
- GLenum gl_type;
- glsl_base_type base_type;
-
- unsigned sampler_dimensionality:3;
- unsigned sampler_shadow:1;
- unsigned sampler_array:1;
- unsigned sampler_type:2; /**< Type of data returned using this sampler.
- * only \c GLSL_TYPE_FLOAT, \c GLSL_TYPE_INT,
- * and \c GLSL_TYPE_UINT are valid.
- */
-
- /* Callers of this talloc-based new need not call delete. It's
- * easier to just talloc_free 'mem_ctx' (or any of its ancestors). */
- static void* operator new(size_t size)
- {
- if (glsl_type::mem_ctx == NULL) {
- glsl_type::mem_ctx = talloc_init("glsl_type");
- assert(glsl_type::mem_ctx != NULL);
- }
-
- void *type;
-
- type = talloc_size(glsl_type::mem_ctx, size);
- assert(type != NULL);
-
- return type;
- }
-
- /* If the user *does* call delete, that's OK, we will just
- * talloc_free in that case. */
- static void operator delete(void *type)
- {
- talloc_free(type);
- }
-
- /**
- * \name Vector and matrix element counts
- *
- * For scalars, each of these values will be 1. For non-numeric types
- * these will be 0.
- */
- /*@{*/
- unsigned vector_elements:3; /**< 1, 2, 3, or 4 vector elements. */
- unsigned matrix_columns:3; /**< 1, 2, 3, or 4 matrix columns. */
- /*@}*/
-
- /**
- * Name of the data type
- *
- * This may be \c NULL for anonymous structures, for arrays, or for
- * function types.
- */
- const char *name;
-
- /**
- * For \c GLSL_TYPE_ARRAY, this is the length of the array. For
- * \c GLSL_TYPE_STRUCT, it is the number of elements in the structure and
- * the number of values pointed to by \c fields.structure (below).
- */
- unsigned length;
-
- /**
- * Subtype of composite data types.
- */
- union {
- const struct glsl_type *array; /**< Type of array elements. */
- const struct glsl_type *parameters; /**< Parameters to function. */
- struct glsl_struct_field *structure; /**< List of struct fields. */
- } fields;
-
-
- /**
- * \name Pointers to various public type singletons
- */
- /*@{*/
- static const glsl_type *const error_type;
- static const glsl_type *const void_type;
- static const glsl_type *const int_type;
- static const glsl_type *const ivec4_type;
- static const glsl_type *const uint_type;
- static const glsl_type *const uvec2_type;
- static const glsl_type *const uvec3_type;
- static const glsl_type *const uvec4_type;
- static const glsl_type *const float_type;
- static const glsl_type *const vec2_type;
- static const glsl_type *const vec3_type;
- static const glsl_type *const vec4_type;
- static const glsl_type *const bool_type;
- static const glsl_type *const mat2_type;
- static const glsl_type *const mat2x3_type;
- static const glsl_type *const mat2x4_type;
- static const glsl_type *const mat3x2_type;
- static const glsl_type *const mat3_type;
- static const glsl_type *const mat3x4_type;
- static const glsl_type *const mat4x2_type;
- static const glsl_type *const mat4x3_type;
- static const glsl_type *const mat4_type;
- /*@}*/
-
-
- /**
- * For numeric and boolean derrived types returns the basic scalar type
- *
- * If the type is a numeric or boolean scalar, vector, or matrix type,
- * this function gets the scalar type of the individual components. For
- * all other types, including arrays of numeric or boolean types, the
- * error type is returned.
- */
- const glsl_type *get_base_type() const;
-
- /**
- * Query the type of elements in an array
- *
- * \return
- * Pointer to the type of elements in the array for array types, or \c NULL
- * for non-array types.
- */
- const glsl_type *element_type() const
- {
- return is_array() ? fields.array : NULL;
- }
-
- /**
- * Get the instance of a built-in scalar, vector, or matrix type
- */
- static const glsl_type *get_instance(unsigned base_type, unsigned rows,
- unsigned columns);
-
- /**
- * Get the instance of an array type
- */
- static const glsl_type *get_array_instance(const glsl_type *base,
- unsigned elements);
-
- /**
- * Get the instance of a record type
- */
- static const glsl_type *get_record_instance(const glsl_struct_field *fields,
- unsigned num_fields,
- const char *name);
-
- /**
- * Query the total number of scalars that make up a scalar, vector or matrix
- */
- unsigned components() const
- {
- return vector_elements * matrix_columns;
- }
-
- /**
- * Calculate the number of components slots required to hold this type
- *
- * This is used to determine how many uniform or varying locations a type
- * might occupy.
- */
- unsigned component_slots() const;
-
-
- /**
- * Query whether or not a type is a scalar (non-vector and non-matrix).
- */
- bool is_scalar() const
- {
- return (vector_elements == 1)
- && (base_type >= GLSL_TYPE_UINT)
- && (base_type <= GLSL_TYPE_BOOL);
- }
-
- /**
- * Query whether or not a type is a vector
- */
- bool is_vector() const
- {
- return (vector_elements > 1)
- && (matrix_columns == 1)
- && (base_type >= GLSL_TYPE_UINT)
- && (base_type <= GLSL_TYPE_BOOL);
- }
-
- /**
- * Query whether or not a type is a matrix
- */
- bool is_matrix() const
- {
- /* GLSL only has float matrices. */
- return (matrix_columns > 1) && (base_type == GLSL_TYPE_FLOAT);
- }
-
- /**
- * Query whether or not a type is a non-array numeric type
- */
- bool is_numeric() const
- {
- return (base_type >= GLSL_TYPE_UINT) && (base_type <= GLSL_TYPE_FLOAT);
- }
-
- /**
- * Query whether or not a type is an integral type
- */
- bool is_integer() const
- {
- return (base_type == GLSL_TYPE_UINT) || (base_type == GLSL_TYPE_INT);
- }
-
- /**
- * Query whether or not a type is a float type
- */
- bool is_float() const
- {
- return base_type == GLSL_TYPE_FLOAT;
- }
-
- /**
- * Query whether or not a type is a non-array boolean type
- */
- bool is_boolean() const
- {
- return base_type == GLSL_TYPE_BOOL;
- }
-
- /**
- * Query whether or not a type is a sampler
- */
- bool is_sampler() const
- {
- return base_type == GLSL_TYPE_SAMPLER;
- }
-
- /**
- * Query whether or not a type is an array
- */
- bool is_array() const
- {
- return base_type == GLSL_TYPE_ARRAY;
- }
-
- /**
- * Query whether or not a type is a record
- */
- bool is_record() const
- {
- return base_type == GLSL_TYPE_STRUCT;
- }
-
- /**
- * Query whether or not a type is the void type singleton.
- */
- bool is_void() const
- {
- return base_type == GLSL_TYPE_VOID;
- }
-
- /**
- * Query whether or not a type is the error type singleton.
- */
- bool is_error() const
- {
- return base_type == GLSL_TYPE_ERROR;
- }
-
- /**
- * Query the full type of a matrix row
- *
- * \return
- * If the type is not a matrix, \c glsl_type::error_type is returned.
- * Otherwise a type matching the rows of the matrix is returned.
- */
- const glsl_type *row_type() const
- {
- return is_matrix()
- ? get_instance(base_type, matrix_columns, 1)
- : error_type;
- }
-
- /**
- * Query the full type of a matrix column
- *
- * \return
- * If the type is not a matrix, \c glsl_type::error_type is returned.
- * Otherwise a type matching the columns of the matrix is returned.
- */
- const glsl_type *column_type() const
- {
- return is_matrix()
- ? get_instance(base_type, vector_elements, 1)
- : error_type;
- }
-
-
- /**
- * Get the type of a structure field
- *
- * \return
- * Pointer to the type of the named field. If the type is not a structure
- * or the named field does not exist, \c glsl_type::error_type is returned.
- */
- const glsl_type *field_type(const char *name) const;
-
-
- /**
- * Get the location of a filed within a record type
- */
- int field_index(const char *name) const;
-
-
- /**
- * Query the number of elements in an array type
- *
- * \return
- * The number of elements in the array for array types or -1 for non-array
- * types. If the number of elements in the array has not yet been declared,
- * zero is returned.
- */
- int array_size() const
- {
- return is_array() ? length : -1;
- }
-
-private:
- /**
- * talloc context for all glsl_type allocations
- *
- * Set on the first call to \c glsl_type::new.
- */
- static void *mem_ctx;
-
- void init_talloc_type_ctx(void);
-
- /** Constructor for vector and matrix types */
- glsl_type(GLenum gl_type,
- glsl_base_type base_type, unsigned vector_elements,
- unsigned matrix_columns, const char *name);
-
- /** Constructor for sampler types */
- glsl_type(GLenum gl_type,
- enum glsl_sampler_dim dim, bool shadow, bool array,
- unsigned type, const char *name);
-
- /** Constructor for record types */
- glsl_type(const glsl_struct_field *fields, unsigned num_fields,
- const char *name);
-
- /** Constructor for array types */
- glsl_type(const glsl_type *array, unsigned length);
-
- /** Hash table containing the known array types. */
- static struct hash_table *array_types;
-
- /** Hash table containing the known record types. */
- static struct hash_table *record_types;
-
- static int record_key_compare(const void *a, const void *b);
- static unsigned record_key_hash(const void *key);
-
- /**
- * \name Pointers to various type singletons
- */
- /*@{*/
- static const glsl_type _error_type;
- static const glsl_type _void_type;
- static const glsl_type builtin_core_types[];
- static const glsl_type builtin_structure_types[];
- static const glsl_type builtin_110_deprecated_structure_types[];
- static const glsl_type builtin_110_types[];
- static const glsl_type builtin_120_types[];
- static const glsl_type builtin_130_types[];
- static const glsl_type builtin_ARB_texture_rectangle_types[];
- static const glsl_type builtin_EXT_texture_array_types[];
- static const glsl_type builtin_EXT_texture_buffer_object_types[];
- /*@}*/
-
- /**
- * \name Methods to populate a symbol table with built-in types.
- *
- * \internal
- * This is one of the truely annoying things about C++. Methods that are
- * completely internal and private to a type still have to be advertised to
- * the world in a public header file.
- */
- /*@{*/
- static void generate_100ES_types(glsl_symbol_table *);
- static void generate_110_types(glsl_symbol_table *);
- static void generate_120_types(glsl_symbol_table *);
- static void generate_130_types(glsl_symbol_table *);
- static void generate_ARB_texture_rectangle_types(glsl_symbol_table *, bool);
- static void generate_EXT_texture_array_types(glsl_symbol_table *, bool);
- /*@}*/
-
- /**
- * \name Friend functions.
- *
- * These functions are friends because they must have C linkage and the
- * need to call various private methods or access various private static
- * data.
- */
- /*@{*/
- friend void _mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *);
- friend void _mesa_glsl_release_types(void);
- /*@}*/
-};
-
-struct glsl_struct_field {
- const struct glsl_type *type;
- const char *name;
-};
-
-#endif /* GLSL_TYPES_H */
+/* -*- c++ -*- */ +/* + * Copyright © 2009 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#pragma once +#ifndef GLSL_TYPES_H +#define GLSL_TYPES_H + +#include <cstring> +#include <cassert> + +extern "C" { +#include "GL/gl.h" +} + +#include "ralloc.h" + +struct _mesa_glsl_parse_state; +struct glsl_symbol_table; + +extern "C" void +_mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state); + +extern "C" void +_mesa_glsl_release_types(void); + +enum glsl_base_type { + GLSL_TYPE_UINT = 0, + GLSL_TYPE_INT, + GLSL_TYPE_FLOAT, + GLSL_TYPE_BOOL, + GLSL_TYPE_SAMPLER, + GLSL_TYPE_STRUCT, + GLSL_TYPE_ARRAY, + GLSL_TYPE_VOID, + GLSL_TYPE_ERROR +}; + +enum glsl_sampler_dim { + GLSL_SAMPLER_DIM_1D = 0, + GLSL_SAMPLER_DIM_2D, + GLSL_SAMPLER_DIM_3D, + GLSL_SAMPLER_DIM_CUBE, + GLSL_SAMPLER_DIM_RECT, + GLSL_SAMPLER_DIM_BUF +}; + + +struct glsl_type { + GLenum gl_type; + glsl_base_type base_type; + + unsigned sampler_dimensionality:3; + unsigned sampler_shadow:1; + unsigned sampler_array:1; + unsigned sampler_type:2; /**< Type of data returned using this sampler. + * only \c GLSL_TYPE_FLOAT, \c GLSL_TYPE_INT, + * and \c GLSL_TYPE_UINT are valid. + */ + + /* Callers of this ralloc-based new need not call delete. It's + * easier to just ralloc_free 'mem_ctx' (or any of its ancestors). */ + static void* operator new(size_t size) + { + if (glsl_type::mem_ctx == NULL) { + glsl_type::mem_ctx = ralloc_context(NULL); + assert(glsl_type::mem_ctx != NULL); + } + + void *type; + + type = ralloc_size(glsl_type::mem_ctx, size); + assert(type != NULL); + + return type; + } + + /* If the user *does* call delete, that's OK, we will just + * ralloc_free in that case. */ + static void operator delete(void *type) + { + ralloc_free(type); + } + + /** + * \name Vector and matrix element counts + * + * For scalars, each of these values will be 1. For non-numeric types + * these will be 0. + */ + /*@{*/ + unsigned vector_elements:3; /**< 1, 2, 3, or 4 vector elements. */ + unsigned matrix_columns:3; /**< 1, 2, 3, or 4 matrix columns. */ + /*@}*/ + + /** + * Name of the data type + * + * This may be \c NULL for anonymous structures, for arrays, or for + * function types. + */ + const char *name; + + /** + * For \c GLSL_TYPE_ARRAY, this is the length of the array. For + * \c GLSL_TYPE_STRUCT, it is the number of elements in the structure and + * the number of values pointed to by \c fields.structure (below). + */ + unsigned length; + + /** + * Subtype of composite data types. + */ + union { + const struct glsl_type *array; /**< Type of array elements. */ + const struct glsl_type *parameters; /**< Parameters to function. */ + struct glsl_struct_field *structure; /**< List of struct fields. */ + } fields; + + + /** + * \name Pointers to various public type singletons + */ + /*@{*/ + static const glsl_type *const error_type; + static const glsl_type *const void_type; + static const glsl_type *const int_type; + static const glsl_type *const ivec4_type; + static const glsl_type *const uint_type; + static const glsl_type *const uvec2_type; + static const glsl_type *const uvec3_type; + static const glsl_type *const uvec4_type; + static const glsl_type *const float_type; + static const glsl_type *const vec2_type; + static const glsl_type *const vec3_type; + static const glsl_type *const vec4_type; + static const glsl_type *const bool_type; + static const glsl_type *const mat2_type; + static const glsl_type *const mat2x3_type; + static const glsl_type *const mat2x4_type; + static const glsl_type *const mat3x2_type; + static const glsl_type *const mat3_type; + static const glsl_type *const mat3x4_type; + static const glsl_type *const mat4x2_type; + static const glsl_type *const mat4x3_type; + static const glsl_type *const mat4_type; + /*@}*/ + + + /** + * For numeric and boolean derrived types returns the basic scalar type + * + * If the type is a numeric or boolean scalar, vector, or matrix type, + * this function gets the scalar type of the individual components. For + * all other types, including arrays of numeric or boolean types, the + * error type is returned. + */ + const glsl_type *get_base_type() const; + + /** + * Query the type of elements in an array + * + * \return + * Pointer to the type of elements in the array for array types, or \c NULL + * for non-array types. + */ + const glsl_type *element_type() const + { + return is_array() ? fields.array : NULL; + } + + /** + * Get the instance of a built-in scalar, vector, or matrix type + */ + static const glsl_type *get_instance(unsigned base_type, unsigned rows, + unsigned columns); + + /** + * Get the instance of an array type + */ + static const glsl_type *get_array_instance(const glsl_type *base, + unsigned elements); + + /** + * Get the instance of a record type + */ + static const glsl_type *get_record_instance(const glsl_struct_field *fields, + unsigned num_fields, + const char *name); + + /** + * Query the total number of scalars that make up a scalar, vector or matrix + */ + unsigned components() const + { + return vector_elements * matrix_columns; + } + + /** + * Calculate the number of components slots required to hold this type + * + * This is used to determine how many uniform or varying locations a type + * might occupy. + */ + unsigned component_slots() const; + + + /** + * Query whether or not a type is a scalar (non-vector and non-matrix). + */ + bool is_scalar() const + { + return (vector_elements == 1) + && (base_type >= GLSL_TYPE_UINT) + && (base_type <= GLSL_TYPE_BOOL); + } + + /** + * Query whether or not a type is a vector + */ + bool is_vector() const + { + return (vector_elements > 1) + && (matrix_columns == 1) + && (base_type >= GLSL_TYPE_UINT) + && (base_type <= GLSL_TYPE_BOOL); + } + + /** + * Query whether or not a type is a matrix + */ + bool is_matrix() const + { + /* GLSL only has float matrices. */ + return (matrix_columns > 1) && (base_type == GLSL_TYPE_FLOAT); + } + + /** + * Query whether or not a type is a non-array numeric type + */ + bool is_numeric() const + { + return (base_type >= GLSL_TYPE_UINT) && (base_type <= GLSL_TYPE_FLOAT); + } + + /** + * Query whether or not a type is an integral type + */ + bool is_integer() const + { + return (base_type == GLSL_TYPE_UINT) || (base_type == GLSL_TYPE_INT); + } + + /** + * Query whether or not a type is a float type + */ + bool is_float() const + { + return base_type == GLSL_TYPE_FLOAT; + } + + /** + * Query whether or not a type is a non-array boolean type + */ + bool is_boolean() const + { + return base_type == GLSL_TYPE_BOOL; + } + + /** + * Query whether or not a type is a sampler + */ + bool is_sampler() const + { + return base_type == GLSL_TYPE_SAMPLER; + } + + /** + * Query whether or not a type is an array + */ + bool is_array() const + { + return base_type == GLSL_TYPE_ARRAY; + } + + /** + * Query whether or not a type is a record + */ + bool is_record() const + { + return base_type == GLSL_TYPE_STRUCT; + } + + /** + * Query whether or not a type is the void type singleton. + */ + bool is_void() const + { + return base_type == GLSL_TYPE_VOID; + } + + /** + * Query whether or not a type is the error type singleton. + */ + bool is_error() const + { + return base_type == GLSL_TYPE_ERROR; + } + + /** + * Query the full type of a matrix row + * + * \return + * If the type is not a matrix, \c glsl_type::error_type is returned. + * Otherwise a type matching the rows of the matrix is returned. + */ + const glsl_type *row_type() const + { + return is_matrix() + ? get_instance(base_type, matrix_columns, 1) + : error_type; + } + + /** + * Query the full type of a matrix column + * + * \return + * If the type is not a matrix, \c glsl_type::error_type is returned. + * Otherwise a type matching the columns of the matrix is returned. + */ + const glsl_type *column_type() const + { + return is_matrix() + ? get_instance(base_type, vector_elements, 1) + : error_type; + } + + + /** + * Get the type of a structure field + * + * \return + * Pointer to the type of the named field. If the type is not a structure + * or the named field does not exist, \c glsl_type::error_type is returned. + */ + const glsl_type *field_type(const char *name) const; + + + /** + * Get the location of a filed within a record type + */ + int field_index(const char *name) const; + + + /** + * Query the number of elements in an array type + * + * \return + * The number of elements in the array for array types or -1 for non-array + * types. If the number of elements in the array has not yet been declared, + * zero is returned. + */ + int array_size() const + { + return is_array() ? length : -1; + } + +private: + /** + * ralloc context for all glsl_type allocations + * + * Set on the first call to \c glsl_type::new. + */ + static void *mem_ctx; + + void init_ralloc_type_ctx(void); + + /** Constructor for vector and matrix types */ + glsl_type(GLenum gl_type, + glsl_base_type base_type, unsigned vector_elements, + unsigned matrix_columns, const char *name); + + /** Constructor for sampler types */ + glsl_type(GLenum gl_type, + enum glsl_sampler_dim dim, bool shadow, bool array, + unsigned type, const char *name); + + /** Constructor for record types */ + glsl_type(const glsl_struct_field *fields, unsigned num_fields, + const char *name); + + /** Constructor for array types */ + glsl_type(const glsl_type *array, unsigned length); + + /** Hash table containing the known array types. */ + static struct hash_table *array_types; + + /** Hash table containing the known record types. */ + static struct hash_table *record_types; + + static int record_key_compare(const void *a, const void *b); + static unsigned record_key_hash(const void *key); + + /** + * \name Pointers to various type singletons + */ + /*@{*/ + static const glsl_type _error_type; + static const glsl_type _void_type; + static const glsl_type builtin_core_types[]; + static const glsl_type builtin_structure_types[]; + static const glsl_type builtin_110_deprecated_structure_types[]; + static const glsl_type builtin_110_types[]; + static const glsl_type builtin_120_types[]; + static const glsl_type builtin_130_types[]; + static const glsl_type builtin_ARB_texture_rectangle_types[]; + static const glsl_type builtin_EXT_texture_array_types[]; + static const glsl_type builtin_EXT_texture_buffer_object_types[]; + /*@}*/ + + /** + * \name Methods to populate a symbol table with built-in types. + * + * \internal + * This is one of the truely annoying things about C++. Methods that are + * completely internal and private to a type still have to be advertised to + * the world in a public header file. + */ + /*@{*/ + static void generate_100ES_types(glsl_symbol_table *); + static void generate_110_types(glsl_symbol_table *); + static void generate_120_types(glsl_symbol_table *); + static void generate_130_types(glsl_symbol_table *); + static void generate_ARB_texture_rectangle_types(glsl_symbol_table *, bool); + static void generate_EXT_texture_array_types(glsl_symbol_table *, bool); + /*@}*/ + + /** + * \name Friend functions. + * + * These functions are friends because they must have C linkage and the + * need to call various private methods or access various private static + * data. + */ + /*@{*/ + friend void _mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *); + friend void _mesa_glsl_release_types(void); + /*@}*/ +}; + +struct glsl_struct_field { + const struct glsl_type *type; + const char *name; +}; + +#endif /* GLSL_TYPES_H */ |