/* $Id: blend.h,v 3.0 1998/01/31 20:47:46 brianp Exp $ */

/*
 * Mesa 3-D graphics library
 * Version:  3.0
 * Copyright (C) 1995-1998  Brian Paul
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */


/*
 * $Log: blend.h,v $
 * Revision 3.0  1998/01/31 20:47:46  brianp
 * initial rev
 *
 */


#ifndef BLEND_H
#define BLEND_H


#include "types.h"



extern void gl_blend_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
			   GLubyte rgba[][4], const GLubyte mask[] );


extern void gl_blend_pixels( GLcontext *ctx,
                             GLuint n, const GLint x[], const GLint y[],
			     GLubyte rgba[][4], const GLubyte mask[] );


extern void gl_BlendFunc( GLcontext *ctx, GLenum sfactor, GLenum dfactor );


extern void gl_BlendEquation( GLcontext *ctx, GLenum mode );


extern void gl_BlendColor( GLcontext *ctx, GLclampf red, GLclampf green,
                           GLclampf blue, GLclampf alpha );

#endif