| /* |
| * Mesa 3-D graphics library |
| * |
| * 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 |
| * 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. |
| */ |
| |
| /** |
| * \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" |
| |
| #include <string.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| |
| /** |
| * 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_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? */ |
| /** |
| * 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 void |
| _mesa_reserve_parameter_storage(struct gl_program_parameter_list *paramList, |
| unsigned reserve_slots); |
| |
| 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]); |
| |
| 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); |
| |
| static inline GLint |
| _mesa_add_unnamed_constant(struct gl_program_parameter_list *paramList, |
| const gl_constant_value values[4], GLuint size, |
| GLuint *swizzleOut) |
| { |
| return _mesa_add_typed_unnamed_constant(paramList, values, size, GL_NONE, |
| swizzleOut); |
| } |
| |
| extern GLint |
| _mesa_add_state_reference(struct gl_program_parameter_list *paramList, |
| const gl_state_index stateTokens[STATE_LENGTH]); |
| |
| |
| static inline GLint |
| _mesa_lookup_parameter_index(const struct gl_program_parameter_list *paramList, |
| const char *name) |
| { |
| if (!paramList) |
| return -1; |
| |
| /* name must be null-terminated */ |
| for (GLint i = 0; i < (GLint) paramList->NumParameters; i++) { |
| if (paramList->Parameters[i].Name && |
| strcmp(paramList->Parameters[i].Name, name) == 0) |
| return i; |
| } |
| |
| return -1; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* PROG_PARAMETER_H */ |