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/*
* 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
#define GLSL_TYPE_UINT 0
#define GLSL_TYPE_INT 1
#define GLSL_TYPE_FLOAT 2
#define GLSL_TYPE_BOOL 3
#define GLSL_TYPE_SAMPLER 4
#define GLSL_TYPE_STRUCT 5
#define GLSL_TYPE_ARRAY 6
#define GLSL_TYPE_FUNCTION 7
#define GLSL_TYPE_VOID 8
#define GLSL_TYPE_ERROR 9
#define is_numeric_base_type(b) \
(((b) >= GLSL_TYPE_UINT) && ((b) <= GLSL_TYPE_FLOAT))
#define is_integer_base_type(b) \
(((b) == GLSL_TYPE_UINT) || ((b) == GLSL_TYPE_INT))
#define is_error_type(t) ((t)->base_type == GLSL_TYPE_ERROR)
#define GLSL_SAMPLER_DIM_1D 0
#define GLSL_SAMPLER_DIM_2D 1
#define GLSL_SAMPLER_DIM_3D 2
#define GLSL_SAMPLER_DIM_CUBE 3
#define GLSL_SAMPLER_DIM_RECT 4
#define GLSL_SAMPLER_DIM_BUF 5
struct glsl_type {
unsigned base_type:4;
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.
*/
unsigned vector_elements:3; /**< 0, 2, 3, or 4 vector elements. */
unsigned matrix_rows:3; /**< 0, 2, 3, or 4 matrix rows. */
/**
* 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).
*
* For \c GLSL_TYPE_FUNCTION, it is the number of parameters to the
* function. The return value from a function is implicitly the first
* parameter. The types of the parameters are stored in
* \c fields.parameters (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. */
const struct glsl_struct_field *structure;/**< List of struct fields. */
} fields;
};
#define is_glsl_type_scalar(t) \
(((t)->vector_elements == 0) \
&& ((t)->base_type >= GLSL_TYPE_UINT) \
&& ((t)->base_type <= GLSL_TYPE_BOOL))
#define is_glsl_type_vector(t) \
(((t)->vector_elements > 0) \
&& ((t)->matrix_rows == 0) \
&& ((t)->base_type >= GLSL_TYPE_UINT) \
&& ((t)->base_type <= GLSL_TYPE_BOOL))
#define is_glsl_type_matrix(t) \
(((t)->matrix_rows > 0) \
&& ((t)->base_type == GLSL_TYPE_FLOAT)) /* GLSL only has float matrices. */
struct glsl_struct_field {
const struct glsl_type *type;
const char *name;
};
struct _mesa_glsl_parse_state;
#ifdef __cplusplus
extern "C" {
#endif
extern void
_mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state);
extern const struct glsl_type *
_mesa_glsl_get_vector_type(unsigned base_type, unsigned vector_length);
extern const struct glsl_type *const glsl_error_type;
extern const struct glsl_type *const glsl_int_type;
extern const struct glsl_type *const glsl_uint_type;
extern const struct glsl_type *const glsl_float_type;
extern const struct glsl_type *const glsl_bool_type;
#ifdef __cplusplus
}
#endif
#endif /* GLSL_TYPES_H */
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