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/* $Id: s_alphabuf.h,v 1.1 2003-02-28 11:49:41 pj Exp $ */
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/*
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 * Mesa 3-D graphics library
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 * Version:  4.0.2
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 *
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 * Copyright (C) 1999-2002  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 S_ALPHABUF_H
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#define S_ALPHABUF_H
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#include "mtypes.h"
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#include "swrast.h"
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extern void
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_mesa_alloc_alpha_buffers( GLframebuffer *buffer );
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extern void
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_mesa_clear_alpha_buffers( GLcontext *ctx );
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extern void
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_mesa_write_alpha_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
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                        CONST GLchan rgba[][4], const GLubyte mask[] );
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extern void
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_mesa_write_mono_alpha_span( GLcontext *ctx,
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                             GLuint n, GLint x, GLint y,
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                             GLchan alpha, const GLubyte mask[] );
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extern void
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_mesa_write_alpha_pixels( GLcontext* ctx,
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                          GLuint n, const GLint x[], const GLint y[],
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                          CONST GLchan rgba[][4],
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                          const GLubyte mask[] );
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extern void
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_mesa_write_mono_alpha_pixels( GLcontext* ctx,
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                               GLuint n, const GLint x[],
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                               const GLint y[], GLchan alpha,
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                               const GLubyte mask[] );
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extern void
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_mesa_read_alpha_span( GLcontext* ctx,
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                       GLuint n, GLint x, GLint y, GLchan rgba[][4] );
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extern void
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_mesa_read_alpha_pixels( GLcontext* ctx,
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                         GLuint n, const GLint x[], const GLint y[],
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                         GLchan rgba[][4], const GLubyte mask[] );
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#endif