2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 * \file prog_parameter.c
27 * Program parameter lists and functions.
31 #ifndef PROG_PARAMETER_H
32 #define PROG_PARAMETER_H
34 #include "main/mtypes.h"
35 #include "prog_statevars.h"
39 * Program parameter flags
42 #define PROG_PARAM_BIT_CENTROID 0x1 /**< for varying vars (GLSL 1.20) */
43 #define PROG_PARAM_BIT_INVARIANT 0x2 /**< for varying vars (GLSL 1.20) */
44 #define PROG_PARAM_BIT_FLAT 0x4 /**< for varying vars (GLSL 1.30) */
45 #define PROG_PARAM_BIT_LINEAR 0x8 /**< for varying vars (GLSL 1.30) */
52 * Used by shaders/programs for uniforms, constants, varying vars, etc.
54 struct gl_program_parameter
56 const char *Name
; /**< Null-terminated string */
57 gl_register_file Type
; /**< PROGRAM_NAMED_PARAM, CONSTANT or STATE_VAR */
58 GLenum DataType
; /**< GL_FLOAT, GL_FLOAT_VEC2, etc */
59 GLuint Size
; /**< Number of components (1..4) */
60 GLboolean Used
; /**< Helper flag for GLSL uniform tracking */
61 GLboolean Initialized
; /**< Has the ParameterValue[] been set? */
62 GLbitfield Flags
; /**< Bitmask of PROG_PARAM_*_BIT */
64 * A sequence of STATE_* tokens and integers to identify GL state.
66 gl_state_index StateIndexes
[STATE_LENGTH
];
71 * List of gl_program_parameter instances.
73 struct gl_program_parameter_list
75 GLuint Size
; /**< allocated size of Parameters, ParameterValues */
76 GLuint NumParameters
; /**< number of parameters in arrays */
77 struct gl_program_parameter
*Parameters
; /**< Array [Size] */
78 GLfloat (*ParameterValues
)[4]; /**< Array [Size] of GLfloat[4] */
79 GLbitfield StateFlags
; /**< _NEW_* flags indicating which state changes
80 might invalidate ParameterValues[] */
84 extern struct gl_program_parameter_list
*
85 _mesa_new_parameter_list(void);
87 extern struct gl_program_parameter_list
*
88 _mesa_new_parameter_list_sized(unsigned size
);
91 _mesa_free_parameter_list(struct gl_program_parameter_list
*paramList
);
93 extern struct gl_program_parameter_list
*
94 _mesa_clone_parameter_list(const struct gl_program_parameter_list
*list
);
96 extern struct gl_program_parameter_list
*
97 _mesa_combine_parameter_lists(const struct gl_program_parameter_list
*a
,
98 const struct gl_program_parameter_list
*b
);
101 _mesa_num_parameters(const struct gl_program_parameter_list
*list
)
103 return list
? list
->NumParameters
: 0;
107 _mesa_add_parameter(struct gl_program_parameter_list
*paramList
,
108 gl_register_file type
, const char *name
,
109 GLuint size
, GLenum datatype
, const GLfloat
*values
,
110 const gl_state_index state
[STATE_LENGTH
],
114 _mesa_add_named_parameter(struct gl_program_parameter_list
*paramList
,
115 const char *name
, const GLfloat values
[4]);
118 _mesa_add_named_constant(struct gl_program_parameter_list
*paramList
,
119 const char *name
, const GLfloat values
[4],
123 _mesa_add_unnamed_constant(struct gl_program_parameter_list
*paramList
,
124 const GLfloat values
[4], GLuint size
,
128 _mesa_add_uniform(struct gl_program_parameter_list
*paramList
,
129 const char *name
, GLuint size
, GLenum datatype
,
130 const GLfloat
*values
);
133 _mesa_use_uniform(struct gl_program_parameter_list
*paramList
,
137 _mesa_add_sampler(struct gl_program_parameter_list
*paramList
,
138 const char *name
, GLenum datatype
);
141 _mesa_add_varying(struct gl_program_parameter_list
*paramList
,
142 const char *name
, GLuint size
, GLbitfield flags
);
145 _mesa_add_attribute(struct gl_program_parameter_list
*paramList
,
146 const char *name
, GLint size
, GLenum datatype
, GLint attrib
);
149 _mesa_add_state_reference(struct gl_program_parameter_list
*paramList
,
150 const gl_state_index stateTokens
[STATE_LENGTH
]);
153 _mesa_lookup_parameter_value(const struct gl_program_parameter_list
*paramList
,
154 GLsizei nameLen
, const char *name
);
157 _mesa_lookup_parameter_index(const struct gl_program_parameter_list
*paramList
,
158 GLsizei nameLen
, const char *name
);
161 _mesa_lookup_parameter_constant(const struct gl_program_parameter_list
*list
,
162 const GLfloat v
[], GLuint vSize
,
163 GLint
*posOut
, GLuint
*swizzleOut
);
166 _mesa_longest_parameter_name(const struct gl_program_parameter_list
*list
,
167 gl_register_file type
);
170 _mesa_num_parameters_of_type(const struct gl_program_parameter_list
*list
,
171 gl_register_file type
);
174 #endif /* PROG_PARAMETER_H */