1 /* ResidualVM - A 3D game interpreter 2 * 3 * ResidualVM is the legal property of its developers, whose names 4 * are too numerous to list here. Please refer to the COPYRIGHT 5 * file distributed with this source distribution. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 2 10 * of the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 20 * 21 */ 22 23 #include "common/scummsys.h" 24 25 #if defined(USE_GLES2) || defined(USE_OPENGL_SHADERS) 26 27 namespace OpenGL { 28 namespace BuiltinShaders { 29 30 const char *compatVertex = 31 "#if defined(GL_ES)\n" 32 "mediump float round(in mediump float x) {\n" 33 "return sign(x) * floor(abs(x) + .5);\n" 34 "}\n" 35 "#define in attribute\n" 36 "#define out varying\n" 37 "#elif __VERSION__ < 130\n" 38 "float round(in float x) {\n" 39 "return sign(x) * floor(abs(x) + .5);\n" 40 "}\n" 41 "#define highp\n" 42 "#define in attribute\n" 43 "#define out varying\n" 44 "#endif\n"; 45 46 const char *compatFragment = 47 "#if defined(GL_ES)\n" 48 "#define in varying\n" 49 "#ifdef GL_FRAGMENT_PRECISION_HIGH\n" 50 "precision highp float;\n" 51 "#else\n" 52 "precision mediump float;\n" 53 "#endif\n" 54 "#define OUTPUT\n" 55 "#define outColor gl_FragColor\n" 56 "#define texture texture2D\n" 57 "#elif __VERSION__ < 130\n" 58 "#define in varying\n" 59 "#define OUTPUT\n" 60 "#define outColor gl_FragColor\n" 61 "#define texture texture2D\n" 62 "#else\n" 63 "#define OUTPUT out vec4 outColor;\n" 64 "#endif\n"; 65 66 } 67 } // End of namespace OpenGL 68 69 #endif 70