1 /* 2 * Mesa 3-D graphics library 3 * Version: 6.3 4 * 5 * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included 15 * in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 26 #ifndef S_STENCIL_H 27 #define S_STENCIL_H 28 29 30 #include "main/mtypes.h" 31 #include "s_span.h" 32 33 34 35 extern GLboolean 36 _swrast_stencil_and_ztest_span(struct gl_context *ctx, SWspan *span); 37 38 39 extern void 40 _swrast_read_stencil_span(struct gl_context *ctx, struct gl_renderbuffer *rb, 41 GLint n, GLint x, GLint y, GLubyte stencil[]); 42 43 44 extern void 45 _swrast_write_stencil_span( struct gl_context *ctx, GLint n, GLint x, GLint y, 46 const GLubyte stencil[] ); 47 48 49 extern void 50 _swrast_clear_stencil_buffer(struct gl_context *ctx); 51 52 53 #endif 54