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/*
* Mesa 3-D graphics library
* Version: 5.1
*
* Copyright (C) 1999-2003 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 program.c
* Vertex and fragment program support functions.
* \author Brian Paul
*/
#ifndef PROGRAM_H
#define PROGRAM_H
#include "mtypes.h"
/* for GL_ARB_v_p and GL_ARB_f_p SWZ instruction */
#define SWIZZLE_ZERO 100
#define SWIZZLE_ONE 101
/*
* Internal functions
*/
extern void
_mesa_init_program(GLcontext *ctx);
extern void
_mesa_set_program_error(GLcontext *ctx, GLint pos, const char *string);
extern const GLubyte *
_mesa_find_line_column(const GLubyte *string, const GLubyte *pos,
GLint *line, GLint *col);
extern struct program *
_mesa_alloc_program(GLcontext *ctx, GLenum target, GLuint id);
extern void
_mesa_delete_program(GLcontext *ctx, struct program *prog);
/*
* Used for describing GL state referenced from inside ARB vertex and
* fragment programs.
* A string such as "state.light[0].ambient" gets translated into a
* sequence of tokens such as [ STATE_LIGHT, 0, STATE_AMBIENT ].
*/
enum state_index {
STATE_MATERIAL,
STATE_LIGHT,
STATE_LIGHTMODEL_AMBIENT,
STATE_LIGHTMODEL_SCENECOLOR,
STATE_LIGHTPROD,
STATE_TEXGEN,
STATE_FOG_COLOR,
STATE_FOG_PARAMS,
STATE_CLIPPLANE,
STATE_POINT_SIZE,
STATE_POINT_ATTENUATION,
STATE_MATRIX,
STATE_MODELVIEW,
STATE_PROJECTION,
STATE_MVP,
STATE_TEXTURE,
STATE_PROGRAM,
STATE_MATRIX_INVERSE,
STATE_MATRIX_TRANSPOSE,
STATE_MATRIX_INVTRANS,
STATE_AMBIENT,
STATE_DIFFUSE,
STATE_SPECULAR,
STATE_EMISSION,
STATE_SHININESS,
STATE_POSITION,
STATE_ATTENUATION,
STATE_SPOT_DIRECTION,
STATE_TEXGEN_EYE_S,
STATE_TEXGEN_EYE_T,
STATE_TEXGEN_EYE_R,
STATE_TEXGEN_EYE_Q,
STATE_TEXGEN_OBJECT_S,
STATE_TEXGEN_OBJECT_T,
STATE_TEXGEN_OBJECT_R,
STATE_TEXGEN_OBJECT_Q
};
/*
* Named program parameters
* Used for NV_fragment_program "DEFINE"d constants and "DECLARE"d parameters,
* and ARB_fragment_program global state references. For the later, Name
* might be "state.light[0].diffuse", for example.
*/
enum parameter_type
{
NAMED_PARAMETER,
CONSTANT,
STATE
};
struct program_parameter
{
const char *Name; /* Null-terminated */
enum parameter_type Type;
enum state_index StateIndexes[5]; /* Global state reference */
GLfloat Values[4];
};
struct program_parameter_list
{
GLuint NumParameters;
struct program_parameter *Parameters;
};
/*
* Program parameter functions
*/
extern struct program_parameter_list *
_mesa_new_parameter_list(void);
extern void
_mesa_free_parameter_list(struct program_parameter_list *paramList);
extern void
_mesa_free_parameters(struct program_parameter_list *paramList);
extern GLint
_mesa_add_named_parameter(struct program_parameter_list *paramList,
const char *name, const GLfloat values[4]);
extern GLint
_mesa_add_named_constant(struct program_parameter_list *paramList,
const char *name, const GLfloat values[4]);
extern GLint
_mesa_add_unnamed_constant(struct program_parameter_list *paramList,
const GLfloat values[4]);
extern GLint
_mesa_add_state_reference(struct program_parameter_list *paramList,
const char *stateString);
extern GLfloat *
_mesa_lookup_parameter_value(struct program_parameter_list *paramList,
GLsizei nameLen, const char *name);
extern GLint
_mesa_lookup_parameter_index(struct program_parameter_list *paramList,
GLsizei nameLen, const char *name);
extern void
_mesa_load_state_parameters(GLcontext *ctx,
struct program_parameter_list *paramList);
/*
* API functions
*/
extern void
_mesa_BindProgram(GLenum target, GLuint id);
extern void
_mesa_DeletePrograms(GLsizei n, const GLuint *ids);
extern void
_mesa_GenPrograms(GLsizei n, GLuint *ids);
extern GLboolean
_mesa_IsProgram(GLuint id);
#endif /* PROGRAM_H */
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