eVolve/vertexShader_glsl.h

00001 //Generated file - Edit vertexShader.glsl!
00002 static const std::string vertexShader_glsl = "/* Copyright (c) 2007       Maxim Makhinya\n  *\n  * This library is free software; you can redistribute it and/or modify it under\n  * the terms of the GNU Lesser General Public License version 2.1 as published\n  * by the Free Software Foundation.\n  *  \n  * This library is distributed in the hope that it will be useful, but WITHOUT\n  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\n  * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more\n  * details.\n  * \n  * You should have received a copy of the GNU Lesser General Public License\n  * along with this library; if not, write to the Free Software Foundation, Inc.,\n  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.\n  */\n \n #version 110\n \n // updated per frame\n uniform float   sliceDistance;\n uniform float   perspProj;\n \n \n uniform float   W;   //scale for x\n uniform float   H;   //scale for y\n uniform float   D;   //scale for z\n uniform float   Do;  //shift of z\n uniform float   Db;  //z offset \n \n void main(void)\n {\n     gl_TexCoord[0] = 0.5 * gl_Vertex + 0.5;\n \n     vec4 vDir = normalize(gl_ModelViewMatrixInverse * vec4(0.,0.,-1.,1.));\n \n     //compute position of virtual back vertex\n     vec4 vPosition = gl_ModelViewMatrixInverse*vec4(0,0,0,1);\n \n     vec4 eyeToVert = normalize(gl_Vertex - vPosition);\n \n // perspective/parallel projection sellection\n     vec4 shift = eyeToVert * (sliceDistance / dot(vDir,eyeToVert)) * perspProj +\n                  vDir * sliceDistance * ( 1.0 - perspProj );\n \n     gl_TexCoord[1] = gl_Vertex + shift;\n \n     //compute texture coordinates for virtual back vertex\n     gl_TexCoord[1] = 0.5 * gl_TexCoord[1] + 0.5;\n \n \n //Scaling of texture coordinates\n     gl_TexCoord[0].x  *= W;\n     gl_TexCoord[0].y  *= H;\n     gl_TexCoord[0].z   = Db + (gl_TexCoord[0].z - Do) * D;\n \n     gl_TexCoord[1].x  *= W;\n     gl_TexCoord[1].y  *= H;\n     gl_TexCoord[1].z   = Db + (gl_TexCoord[1].z - Do) * D;\n \n     gl_Position = ftransform();\n }\n ";