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 */
53 * Used by shaders/programs for uniforms, constants, varying vars, etc.
55 struct gl_program_parameter
57 const char *Name; /**< Null-terminated string */
58 gl_register_file Type; /**< PROGRAM_NAMED_PARAM, CONSTANT or STATE_VAR */
59 GLenum DataType; /**< GL_FLOAT, GL_FLOAT_VEC2, etc */
61 * Number of components (1..4), or more.
62 * If the number of components is greater than 4,
63 * this parameter is part of a larger uniform like a GLSL matrix or array.
64 * The next program parameter's Size will be Size-4 of this parameter.
67 GLboolean Initialized; /**< debug: Has the ParameterValue[] been set? */
68 GLbitfield Flags; /**< Bitmask of PROG_PARAM_*_BIT */
70 * A sequence of STATE_* tokens and integers to identify GL state.
72 gl_state_index StateIndexes[STATE_LENGTH];
77 * List of gl_program_parameter instances.
79 struct gl_program_parameter_list
81 GLuint Size; /**< allocated size of Parameters, ParameterValues */
82 GLuint NumParameters; /**< number of parameters in arrays */
83 struct gl_program_parameter *Parameters; /**< Array [Size] */
84 GLfloat (*ParameterValues)[4]; /**< Array [Size] of GLfloat[4] */
85 GLbitfield StateFlags; /**< _NEW_* flags indicating which state changes
86 might invalidate ParameterValues[] */
90 extern struct gl_program_parameter_list *
91 _mesa_new_parameter_list(void);
93 extern struct gl_program_parameter_list *
94 _mesa_new_parameter_list_sized(unsigned size);
97 _mesa_free_parameter_list(struct gl_program_parameter_list *paramList);
99 extern struct gl_program_parameter_list *
100 _mesa_clone_parameter_list(const struct gl_program_parameter_list *list);
102 extern struct gl_program_parameter_list *
103 _mesa_combine_parameter_lists(const struct gl_program_parameter_list *a,
104 const struct gl_program_parameter_list *b);
107 _mesa_num_parameters(const struct gl_program_parameter_list *list)
109 return list ? list->NumParameters : 0;
113 _mesa_add_parameter(struct gl_program_parameter_list *paramList,
114 gl_register_file type, const char *name,
115 GLuint size, GLenum datatype, const GLfloat *values,
116 const gl_state_index state[STATE_LENGTH],
120 _mesa_add_named_parameter(struct gl_program_parameter_list *paramList,
121 const char *name, const GLfloat values[4]);
124 _mesa_add_named_constant(struct gl_program_parameter_list *paramList,
125 const char *name, const GLfloat values[4],
129 _mesa_add_unnamed_constant(struct gl_program_parameter_list *paramList,
130 const GLfloat values[4], GLuint size,
134 _mesa_add_varying(struct gl_program_parameter_list *paramList,
135 const char *name, GLuint size, GLenum datatype,
139 _mesa_add_attribute(struct gl_program_parameter_list *paramList,
140 const char *name, GLint size, GLenum datatype, GLint attrib);
143 _mesa_add_state_reference(struct gl_program_parameter_list *paramList,
144 const gl_state_index stateTokens[STATE_LENGTH]);
147 _mesa_lookup_parameter_value(const struct gl_program_parameter_list *paramList,
148 GLsizei nameLen, const char *name);
151 _mesa_lookup_parameter_index(const struct gl_program_parameter_list *paramList,
152 GLsizei nameLen, const char *name);
155 _mesa_lookup_parameter_constant(const struct gl_program_parameter_list *list,
156 const GLfloat v[], GLuint vSize,
157 GLint *posOut, GLuint *swizzleOut);
160 _mesa_longest_parameter_name(const struct gl_program_parameter_list *list,
161 gl_register_file type);
164 _mesa_num_parameters_of_type(const struct gl_program_parameter_list *list,
165 gl_register_file type);
168 #endif /* PROG_PARAMETER_H */