/* * Mesa 3-D graphics library * Version: 7.3 * * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. * * 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 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 * BRIAN PAUL 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. */ /** * \file prog_parameter.c * Program parameter lists and functions. * \author Brian Paul */ #ifndef PROG_PARAMETER_H #define PROG_PARAMETER_H #include "main/mtypes.h" #include "prog_statevars.h" /** * Program parameter flags */ /*@{*/ #define PROG_PARAM_BIT_CENTROID 0x1 /**< for varying vars (GLSL 1.20) */ #define PROG_PARAM_BIT_INVARIANT 0x2 /**< for varying vars (GLSL 1.20) */ #define PROG_PARAM_BIT_FLAT 0x4 /**< for varying vars (GLSL 1.30) */ #define PROG_PARAM_BIT_LINEAR 0x8 /**< for varying vars (GLSL 1.30) */ #define PROG_PARAM_BIT_CYL_WRAP 0x10 /**< XXX gallium debug */ /*@}*/ /** * Actual data for constant values of parameters. */ typedef union gl_constant_value { GLfloat f; GLint b; GLint i; GLuint u; } gl_constant_value; /** * Program parameter. * Used by shaders/programs for uniforms, constants, varying vars, etc. */ struct gl_program_parameter { const char *Name; /**< Null-terminated string */ gl_register_file Type; /**< PROGRAM_NAMED_PARAM, CONSTANT or STATE_VAR */ GLenum DataType; /**< GL_FLOAT, GL_FLOAT_VEC2, etc */ /** * Number of components (1..4), or more. * If the number of components is greater than 4, * this parameter is part of a larger uniform like a GLSL matrix or array. * The next program parameter's Size will be Size-4 of this parameter. */ GLuint Size; GLboolean Initialized; /**< debug: Has the ParameterValue[] been set? */ GLbitfield Flags; /**< Bitmask of PROG_PARAM_*_BIT */ /** * A sequence of STATE_* tokens and integers to identify GL state. */ gl_state_index StateIndexes[STATE_LENGTH]; }; /** * List of gl_program_parameter instances. */ struct gl_program_parameter_list { GLuint Size; /**< allocated size of Parameters, ParameterValues */ GLuint NumParameters; /**< number of parameters in arrays */ struct gl_program_parameter *Parameters; /**< Array [Size] */ gl_constant_value (*ParameterValues)[4]; /**< Array [Size] of constant[4] */ GLbitfield StateFlags; /**< _NEW_* flags indicating which state changes might invalidate ParameterValues[] */ }; extern struct gl_program_parameter_list * _mesa_new_parameter_list(void); extern struct gl_program_parameter_list * _mesa_new_parameter_list_sized(unsigned size); extern void _mesa_free_parameter_list(struct gl_program_parameter_list *paramList); extern struct gl_program_parameter_list * _mesa_clone_parameter_list(const struct gl_program_parameter_list *list); extern struct gl_program_parameter_list * _mesa_combine_parameter_lists(const struct gl_program_parameter_list *a, const struct gl_program_parameter_list *b); static inline GLuint _mesa_num_parameters(const struct gl_program_parameter_list *list) { return list ? list->NumParameters : 0; } extern GLint _mesa_add_parameter(struct gl_program_parameter_list *paramList, gl_register_file type, const char *name, GLuint size, GLenum datatype, const gl_constant_value *values, const gl_state_index state[STATE_LENGTH], GLbitfield flags); extern GLint _mesa_add_named_parameter(struct gl_program_parameter_list *paramList, const char *name, const gl_constant_value values[4]); extern GLint _mesa_add_named_constant(struct gl_program_parameter_list *paramList, const char *name, const gl_constant_value values[4], GLuint size); extern GLint _mesa_add_typed_unnamed_constant(struct gl_program_parameter_list *paramList, const gl_constant_value values[4], GLuint size, GLenum datatype, GLuint *swizzleOut); extern GLint _mesa_add_unnamed_constant(struct gl_program_parameter_list *paramList, const gl_constant_value values[4], GLuint size, GLuint *swizzleOut); extern GLint _mesa_add_varying(struct gl_program_parameter_list *paramList, const char *name, GLuint size, GLenum datatype, GLbitfield flags); extern GLint _mesa_add_attribute(struct gl_program_parameter_list *paramList, const char *name, GLint size, GLenum datatype, GLint attrib); extern GLint _mesa_add_state_reference(struct gl_program_parameter_list *paramList, const gl_state_index stateTokens[STATE_LENGTH]); extern gl_constant_value * _mesa_lookup_parameter_value(const struct gl_program_parameter_list *paramList, GLsizei nameLen, const char *name); extern GLint _mesa_lookup_parameter_index(const struct gl_program_parameter_list *paramList, GLsizei nameLen, const char *name); extern GLboolean _mesa_lookup_parameter_constant(const struct gl_program_parameter_list *list, const gl_constant_value v[], GLuint vSize, GLint *posOut, GLuint *swizzleOut); extern GLuint _mesa_longest_parameter_name(const struct gl_program_parameter_list *list, gl_register_file type); extern GLuint _mesa_num_parameters_of_type(const struct gl_program_parameter_list *list, gl_register_file type); #endif /* PROG_PARAMETER_H */