2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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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) */
46 #define PROG_PARAM_BIT_CYL_WRAP 0x10 /**< XXX gallium debug */
50 * Actual data for constant values of parameters.
52 typedef union gl_constant_value
{
61 * Used by shaders/programs for uniforms, constants, varying vars, etc.
63 struct gl_program_parameter
65 const char *Name
; /**< Null-terminated string */
66 gl_register_file Type
; /**< PROGRAM_NAMED_PARAM, CONSTANT or STATE_VAR */
67 GLenum DataType
; /**< GL_FLOAT, GL_FLOAT_VEC2, etc */
69 * Number of components (1..4), or more.
70 * If the number of components is greater than 4,
71 * this parameter is part of a larger uniform like a GLSL matrix or array.
72 * The next program parameter's Size will be Size-4 of this parameter.
75 GLboolean Initialized
; /**< debug: Has the ParameterValue[] been set? */
76 GLbitfield Flags
; /**< Bitmask of PROG_PARAM_*_BIT */
78 * A sequence of STATE_* tokens and integers to identify GL state.
80 gl_state_index StateIndexes
[STATE_LENGTH
];
85 * List of gl_program_parameter instances.
87 struct gl_program_parameter_list
89 GLuint Size
; /**< allocated size of Parameters, ParameterValues */
90 GLuint NumParameters
; /**< number of parameters in arrays */
91 struct gl_program_parameter
*Parameters
; /**< Array [Size] */
92 gl_constant_value (*ParameterValues
)[4]; /**< Array [Size] of constant[4] */
93 GLbitfield StateFlags
; /**< _NEW_* flags indicating which state changes
94 might invalidate ParameterValues[] */
98 extern struct gl_program_parameter_list
*
99 _mesa_new_parameter_list(void);
101 extern struct gl_program_parameter_list
*
102 _mesa_new_parameter_list_sized(unsigned size
);
105 _mesa_free_parameter_list(struct gl_program_parameter_list
*paramList
);
107 extern struct gl_program_parameter_list
*
108 _mesa_clone_parameter_list(const struct gl_program_parameter_list
*list
);
110 extern struct gl_program_parameter_list
*
111 _mesa_combine_parameter_lists(const struct gl_program_parameter_list
*a
,
112 const struct gl_program_parameter_list
*b
);
115 _mesa_num_parameters(const struct gl_program_parameter_list
*list
)
117 return list
? list
->NumParameters
: 0;
121 _mesa_add_parameter(struct gl_program_parameter_list
*paramList
,
122 gl_register_file type
, const char *name
,
123 GLuint size
, GLenum datatype
,
124 const gl_constant_value
*values
,
125 const gl_state_index state
[STATE_LENGTH
],
129 _mesa_add_named_parameter(struct gl_program_parameter_list
*paramList
,
130 const char *name
, const gl_constant_value values
[4]);
133 _mesa_add_named_constant(struct gl_program_parameter_list
*paramList
,
134 const char *name
, const gl_constant_value values
[4],
138 _mesa_add_typed_unnamed_constant(struct gl_program_parameter_list
*paramList
,
139 const gl_constant_value values
[4], GLuint size
,
140 GLenum datatype
, GLuint
*swizzleOut
);
143 _mesa_add_unnamed_constant(struct gl_program_parameter_list
*paramList
,
144 const gl_constant_value values
[4], GLuint size
,
148 _mesa_add_varying(struct gl_program_parameter_list
*paramList
,
149 const char *name
, GLuint size
, GLenum datatype
,
153 _mesa_add_attribute(struct gl_program_parameter_list
*paramList
,
154 const char *name
, GLint size
, GLenum datatype
, GLint attrib
);
157 _mesa_add_state_reference(struct gl_program_parameter_list
*paramList
,
158 const gl_state_index stateTokens
[STATE_LENGTH
]);
160 extern gl_constant_value
*
161 _mesa_lookup_parameter_value(const struct gl_program_parameter_list
*paramList
,
162 GLsizei nameLen
, const char *name
);
165 _mesa_lookup_parameter_index(const struct gl_program_parameter_list
*paramList
,
166 GLsizei nameLen
, const char *name
);
169 _mesa_lookup_parameter_constant(const struct gl_program_parameter_list
*list
,
170 const gl_constant_value v
[], GLuint vSize
,
171 GLint
*posOut
, GLuint
*swizzleOut
);
174 _mesa_longest_parameter_name(const struct gl_program_parameter_list
*list
,
175 gl_register_file type
);
178 _mesa_num_parameters_of_type(const struct gl_program_parameter_list
*list
,
179 gl_register_file type
);
182 #endif /* PROG_PARAMETER_H */