0,0 → 1,168 |
/* |
* 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. |
*/ |
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/** |
* \file prog_parameter.c |
* Program parameter lists and functions. |
* \author Brian Paul |
*/ |
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#ifndef PROG_PARAMETER_H |
#define PROG_PARAMETER_H |
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#include "main/mtypes.h" |
#include "prog_statevars.h" |
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/** |
* 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 */ |
/*@}*/ |
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/** |
* 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]; |
}; |
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/** |
* 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] */ |
GLfloat (*ParameterValues)[4]; /**< Array [Size] of GLfloat[4] */ |
GLbitfield StateFlags; /**< _NEW_* flags indicating which state changes |
might invalidate ParameterValues[] */ |
}; |
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extern struct gl_program_parameter_list * |
_mesa_new_parameter_list(void); |
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extern struct gl_program_parameter_list * |
_mesa_new_parameter_list_sized(unsigned size); |
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extern void |
_mesa_free_parameter_list(struct gl_program_parameter_list *paramList); |
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extern struct gl_program_parameter_list * |
_mesa_clone_parameter_list(const struct gl_program_parameter_list *list); |
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extern struct gl_program_parameter_list * |
_mesa_combine_parameter_lists(const struct gl_program_parameter_list *a, |
const struct gl_program_parameter_list *b); |
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static INLINE GLuint |
_mesa_num_parameters(const struct gl_program_parameter_list *list) |
{ |
return list ? list->NumParameters : 0; |
} |
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extern GLint |
_mesa_add_parameter(struct gl_program_parameter_list *paramList, |
gl_register_file type, const char *name, |
GLuint size, GLenum datatype, const GLfloat *values, |
const gl_state_index state[STATE_LENGTH], |
GLbitfield flags); |
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extern GLint |
_mesa_add_named_parameter(struct gl_program_parameter_list *paramList, |
const char *name, const GLfloat values[4]); |
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extern GLint |
_mesa_add_named_constant(struct gl_program_parameter_list *paramList, |
const char *name, const GLfloat values[4], |
GLuint size); |
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extern GLint |
_mesa_add_unnamed_constant(struct gl_program_parameter_list *paramList, |
const GLfloat values[4], GLuint size, |
GLuint *swizzleOut); |
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extern GLint |
_mesa_add_varying(struct gl_program_parameter_list *paramList, |
const char *name, GLuint size, GLenum datatype, |
GLbitfield flags); |
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extern GLint |
_mesa_add_attribute(struct gl_program_parameter_list *paramList, |
const char *name, GLint size, GLenum datatype, GLint attrib); |
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extern GLint |
_mesa_add_state_reference(struct gl_program_parameter_list *paramList, |
const gl_state_index stateTokens[STATE_LENGTH]); |
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extern GLfloat * |
_mesa_lookup_parameter_value(const struct gl_program_parameter_list *paramList, |
GLsizei nameLen, const char *name); |
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extern GLint |
_mesa_lookup_parameter_index(const struct gl_program_parameter_list *paramList, |
GLsizei nameLen, const char *name); |
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extern GLboolean |
_mesa_lookup_parameter_constant(const struct gl_program_parameter_list *list, |
const GLfloat v[], GLuint vSize, |
GLint *posOut, GLuint *swizzleOut); |
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extern GLuint |
_mesa_longest_parameter_name(const struct gl_program_parameter_list *list, |
gl_register_file type); |
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extern GLuint |
_mesa_num_parameters_of_type(const struct gl_program_parameter_list *list, |
gl_register_file type); |
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#endif /* PROG_PARAMETER_H */ |