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1901 serge 1 
/*
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 * Mesa 3-D graphics library
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 * Version:  6.5.1
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 *
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 * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the "Software"),
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 * to deal in the Software without restriction, including without limitation
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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 * and/or sell copies of the Software, and to permit persons to whom the
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 * Software is furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included
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 * in all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
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 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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 */
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#ifndef _M_TRANSLATE_H_
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#define _M_TRANSLATE_H_
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#include "main/compiler.h"
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#include "main/glheader.h"
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#include "main/mtypes.h"		/* hack for GLchan */
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/**
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 * Array translation.
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 * For example, convert array of GLushort[3] to GLfloat[4].
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 * The function name specifies the destination format/size.
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 * \param  to  the destination address
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 * \param  ptr  the source address
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 * \param  stride  the source stride (in bytes) between elements
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 * \param  type  the source datatype (GL_SHORT, GL_UNSIGNED_INT, etc)
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 * \param  size  number of values per element in source array (1,2,3 or 4)
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 * \param  start  first element in source array to convert
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 * \param  n  number of elements to convert
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 *
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 * Note: "element" means a tuple like GLfloat[3] or GLubyte[4].
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 */
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extern void _math_trans_1f(GLfloat *to,
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			   CONST void *ptr,
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			   GLuint stride,
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			   GLenum type,
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			   GLuint start,
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			   GLuint n );
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extern void _math_trans_1ui(GLuint *to,
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			    CONST void *ptr,
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			    GLuint stride,
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			    GLenum type,
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			    GLuint start,
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			    GLuint n );
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extern void _math_trans_1ub(GLubyte *to,
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			    CONST void *ptr,
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			    GLuint stride,
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			    GLenum type,
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			    GLuint start,
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			    GLuint n );
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extern void _math_trans_4ub(GLubyte (*to)[4],
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			    CONST void *ptr,
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			    GLuint stride,
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			    GLenum type,
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			    GLuint size,
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			    GLuint start,
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			    GLuint n );
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extern void _math_trans_4chan( GLchan (*to)[4],
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			       CONST void *ptr,
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			       GLuint stride,
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			       GLenum type,
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			       GLuint size,
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			       GLuint start,
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			       GLuint n );
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extern void _math_trans_4us(GLushort (*to)[4],
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			    CONST void *ptr,
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			    GLuint stride,
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			    GLenum type,
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			    GLuint size,
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			    GLuint start,
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			    GLuint n );
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/** Convert to floats w/out normalization (i.e. just cast) */
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extern void _math_trans_4f(GLfloat (*to)[4],
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			   CONST void *ptr,
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			   GLuint stride,
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			   GLenum type,
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			   GLuint size,
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			   GLuint start,
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			   GLuint n );
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/** Convert to normalized floats in [0,1] or [-1, 1] */
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extern void _math_trans_4fn(GLfloat (*to)[4],
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			    CONST void *ptr,
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			    GLuint stride,
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			    GLenum type,
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			    GLuint size,
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			    GLuint start,
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			    GLuint n );
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extern void _math_trans_3fn(GLfloat (*to)[3],
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			   CONST void *ptr,
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			   GLuint stride,
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			   GLenum type,
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			   GLuint start,
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			   GLuint n );
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extern void _math_init_translate( void );
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#endif