1 /* $Id: alphabuf.h,v 1.1 1996/09/13 01:38:16 brianp Exp $ */ 2 3 /* 4 * Mesa 3-D graphics library 5 * Version: 2.0 6 * Copyright (C) 1995-1996 Brian Paul 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Library General Public 10 * License as published by the Free Software Foundation; either 11 * version 2 of the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Library General Public License for more details. 17 * 18 * You should have received a copy of the GNU Library General Public 19 * License along with this library; if not, write to the Free 20 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 21 */ 22 23 24 /* 25 * $Log: alphabuf.h,v $ 26 * Revision 1.1 1996/09/13 01:38:16 brianp 27 * Initial revision 28 * 29 */ 30 31 32 33 #ifndef ALPHABUF_H 34 #define ALPHABUF_H 35 36 37 #include "types.h" 38 39 40 extern void gl_alloc_alpha_buffers( GLcontext* ctx ); 41 42 43 extern void gl_clear_alpha_buffers( GLcontext* ctx ); 44 45 46 extern void gl_write_alpha_span( GLcontext* ctx, GLuint n, GLint x, GLint y, 47 GLubyte alpha[], GLubyte mask[] ); 48 49 50 extern void gl_write_mono_alpha_span( GLcontext* ctx, 51 GLuint n, GLint x, GLint y, 52 GLubyte alpha, GLubyte mask[] ); 53 54 55 56 extern void gl_write_alpha_pixels( GLcontext* ctx, 57 GLuint n, const GLint x[], const GLint y[], 58 const GLubyte alpha[], 59 const GLubyte mask[] ); 60 61 62 extern void gl_write_mono_alpha_pixels( GLcontext* ctx, 63 GLuint n, const GLint x[], 64 const GLint y[], GLubyte alpha, 65 const GLubyte mask[] ); 66 67 68 extern void gl_read_alpha_span( GLcontext* ctx, 69 GLuint n, GLint x, GLint y, GLubyte alpha[] ); 70 71 72 extern void gl_read_alpha_pixels( GLcontext* ctx, 73 GLuint n, const GLint x[], const GLint y[], 74 GLubyte alpha[], const GLubyte mask[] ); 75 76 77 #endif 78 79