s_alpha.c revision fc80ad6e62fb2b53d53756593099330477a44c52
1fc80ad6e62fb2b53d53756593099330477a44c52Brian Paul/* $Id: s_alpha.c,v 1.12 2002/10/04 19:10:12 brianp Exp $ */ 2e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 3e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell/* 4e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Mesa 3-D graphics library 52ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul * Version: 4.1 622144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes * 72ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul * Copyright (C) 1999-2002 Brian Paul All Rights Reserved. 822144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes * 9e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Permission is hereby granted, free of charge, to any person obtaining a 10e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * copy of this software and associated documentation files (the "Software"), 11e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * to deal in the Software without restriction, including without limitation 12e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * the rights to use, copy, modify, merge, publish, distribute, sublicense, 13e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * and/or sell copies of the Software, and to permit persons to whom the 14e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * Software is furnished to do so, subject to the following conditions: 1522144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes * 16e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * The above copyright notice and this permission notice shall be included 17e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * in all copies or substantial portions of the Software. 1822144ab7552f0799bcfca506bf4ffa7f70a06649Gareth Hughes * 19e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 20e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 21e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 22e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 23e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 24e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell */ 26e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 27bf80e1ed620836e2ca0dd3f7d2d4cb187d17563dBrian Paul/** 28bf80e1ed620836e2ca0dd3f7d2d4cb187d17563dBrian Paul * \file swrast/s_alpha.c 29bf80e1ed620836e2ca0dd3f7d2d4cb187d17563dBrian Paul * \brief Functions to apply alpha test. 30bf80e1ed620836e2ca0dd3f7d2d4cb187d17563dBrian Paul */ 31e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 32e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "glheader.h" 33e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "context.h" 34e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "colormac.h" 35e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "macros.h" 36e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "mmath.h" 37e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 38e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell#include "s_alpha.h" 39ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul#include "s_context.h" 40e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 41e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 42bf80e1ed620836e2ca0dd3f7d2d4cb187d17563dBrian Paul/** 43bf80e1ed620836e2ca0dd3f7d2d4cb187d17563dBrian Paul * \fn GLint _mesa_alpha_test( const GLcontext *ctx, struct sw_span *span ) 44bf80e1ed620836e2ca0dd3f7d2d4cb187d17563dBrian Paul * \brief Apply the alpha test to a span of pixels. 45bf80e1ed620836e2ca0dd3f7d2d4cb187d17563dBrian Paul * \return 46bf80e1ed620836e2ca0dd3f7d2d4cb187d17563dBrian Paul * - "0" = all pixels in the span failed the alpha test. 47bf80e1ed620836e2ca0dd3f7d2d4cb187d17563dBrian Paul * - "1" = one or more pixels passed the alpha test. 482ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul */ 492ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian PaulGLint 50ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul_mesa_alpha_test( const GLcontext *ctx, struct sw_span *span ) 512ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul{ 5277df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul const GLchan (*rgba)[4] = (const GLchan (*)[4]) span->array->rgba; 53fc80ad6e62fb2b53d53756593099330477a44c52Brian Paul GLchan ref; 54ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul const GLuint n = span->end; 5577df88727cb0a423dd5cb41498c2302d9df4fce7Brian Paul GLubyte *mask = span->array->mask; 56ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul GLuint i; 572ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul 58fc80ad6e62fb2b53d53756593099330477a44c52Brian Paul CLAMPED_FLOAT_TO_CHAN(ref, ctx->Color.AlphaRef); 59fc80ad6e62fb2b53d53756593099330477a44c52Brian Paul 60ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul if (span->arrayMask & SPAN_RGBA) { 61ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul /* Use the array values */ 62ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul switch (ctx->Color.AlphaFunc) { 63ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_LESS: 64ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul for (i = 0; i < n; i++) 65ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul mask[i] &= (rgba[i][ACOMP] < ref); 66ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul break; 67ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_LEQUAL: 68ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul for (i = 0; i < n; i++) 69ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul mask[i] &= (rgba[i][ACOMP] <= ref); 70ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul break; 71ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_GEQUAL: 72ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul for (i = 0; i < n; i++) 73ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul mask[i] &= (rgba[i][ACOMP] >= ref); 74ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul break; 75ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_GREATER: 76ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul for (i = 0; i < n; i++) 77ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul mask[i] &= (rgba[i][ACOMP] > ref); 78ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul break; 79ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_NOTEQUAL: 80ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul for (i = 0; i < n; i++) 81ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul mask[i] &= (rgba[i][ACOMP] != ref); 82ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul break; 83ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_EQUAL: 84ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul for (i = 0; i < n; i++) 85ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul mask[i] &= (rgba[i][ACOMP] == ref); 86ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul break; 87ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_ALWAYS: 88ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul /* do nothing */ 89ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul return 1; 90ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_NEVER: 91ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul /* caller should check for zero! */ 92ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul span->writeAll = GL_FALSE; 93ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul return 0; 94ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul default: 95ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul _mesa_problem( ctx, "Invalid alpha test in _mesa_alpha_test" ); 96ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul return 0; 97ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul } 98ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul } 99ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul else { 100ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul /* Use the interpolation values */ 101ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul#if CHAN_TYPE == GL_FLOAT 102ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul const GLfloat alphaStep = span->alphaStep; 103ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul GLfloat alpha = span->alpha; 104ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul ASSERT(span->interpMask & SPAN_RGBA); 105ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul switch (ctx->Color.AlphaFunc) { 106ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_LESS: 107ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul for (i = 0; i < n; i++) { 108ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul mask[i] &= (alpha < ref); 109ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul alpha += alphaStep; 110ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul } 111ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul break; 112ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_LEQUAL: 113ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul for (i = 0; i < n; i++) { 114ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul mask[i] &= (alpha <= ref); 115ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul alpha += alphaStep; 116ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul } 117ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul break; 118ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_GEQUAL: 119ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul for (i = 0; i < n; i++) { 120ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul mask[i] &= (alpha >= ref); 121ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul alpha += alphaStep; 122ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul } 123ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul break; 124ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_GREATER: 125ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul for (i = 0; i < n; i++) { 126ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul mask[i] &= (alpha > ref); 127ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul alpha += alphaStep; 128ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul } 129ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul break; 130ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_NOTEQUAL: 131ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul for (i = 0; i < n; i++) { 132ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul mask[i] &= (alpha != ref); 133ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul alpha += alphaStep; 134ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul } 135ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul break; 136ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_EQUAL: 137ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul for (i = 0; i < n; i++) { 138ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul mask[i] &= (alpha == ref); 139ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul alpha += alphaStep; 140ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul } 141ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul break; 142ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_ALWAYS: 143ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul /* do nothing */ 144ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul return 1; 145ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_NEVER: 146ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul /* caller should check for zero! */ 147ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul span->writeAll = GL_FALSE; 148ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul return 0; 149ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul default: 150ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul _mesa_problem( ctx, "Invalid alpha test in gl_alpha_test" ); 151ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul return 0; 152ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul } 153ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul#else 154ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul /* 8 or 16-bit channel interpolation */ 155ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul const GLfixed alphaStep = span->alphaStep; 156ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul GLfixed alpha = span->alpha; 157ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul ASSERT(span->interpMask & SPAN_RGBA); 158ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul switch (ctx->Color.AlphaFunc) { 159ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_LESS: 160ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul for (i = 0; i < n; i++) { 161ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul mask[i] &= (FixedToChan(alpha) < ref); 162ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul alpha += alphaStep; 163ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul } 164ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul break; 165ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_LEQUAL: 166ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul for (i = 0; i < n; i++) { 167ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul mask[i] &= (FixedToChan(alpha) <= ref); 168ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul alpha += alphaStep; 169ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul } 170ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul break; 171ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_GEQUAL: 172ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul for (i = 0; i < n; i++) { 173ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul mask[i] &= (FixedToChan(alpha) >= ref); 174ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul alpha += alphaStep; 175ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul } 176ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul break; 177ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_GREATER: 178ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul for (i = 0; i < n; i++) { 179ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul mask[i] &= (FixedToChan(alpha) > ref); 180ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul alpha += alphaStep; 181ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul } 182ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul break; 183ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_NOTEQUAL: 184ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul for (i = 0; i < n; i++) { 185ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul mask[i] &= (FixedToChan(alpha) != ref); 186ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul alpha += alphaStep; 187ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul } 188ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul break; 189ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_EQUAL: 190ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul for (i = 0; i < n; i++) { 191ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul mask[i] &= (FixedToChan(alpha) == ref); 192ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul alpha += alphaStep; 193ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul } 194ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul break; 195ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_ALWAYS: 196ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul /* do nothing */ 197ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul return 1; 198ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul case GL_NEVER: 199ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul /* caller should check for zero! */ 200ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul span->writeAll = GL_FALSE; 201ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul return 0; 202ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul default: 203ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul _mesa_problem( ctx, "Invalid alpha test in gl_alpha_test" ); 204ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul return 0; 205ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul } 206ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul#endif /* CHAN_TYPE */ 2072ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul } 2082ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul 2092a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul#if 0 2102a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul /* XXXX This causes conformance failures!!!! */ 2112ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul while ((span->start <= span->end) && 212ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul (mask[span->start] == 0)) 2132ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul span->start ++; 2142ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul 2152ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul while ((span->end >= span->start) && 216ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul (mask[span->end] == 0)) 2172ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul span->end --; 2182a182a98973edc9ecf2936b1288485bb2b3fa722Brian Paul#endif 219ceb39f4f8dc4863fde17d668c752533a2184476eBrian Paul 2202ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul span->writeAll = GL_FALSE; 221e3a051e0538a605551f4d58294c94f5eb00ed07fKeith Whitwell 2222ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul if (span->start >= span->end) 2232ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul return 0; 2242ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul else 2252ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul return 1; 2262ef866d1fc0a5cc5ef8543d65744dfd4da4dbbafBrian Paul} 227