diff options
Diffstat (limited to 'source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Laplacian2DFilter.h')
-rw-r--r-- | source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Laplacian2DFilter.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Laplacian2DFilter.h b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Laplacian2DFilter.h new file mode 100644 index 00000000000..636ecdb68aa --- /dev/null +++ b/source/gameengine/Rasterizer/RAS_OpenGLFilters/RAS_Laplacian2DFilter.h @@ -0,0 +1,56 @@ +/** + * ***** BEGIN GPL/BL DUAL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. The Blender + * Foundation also sells licenses for use in proprietary software under + * the Blender License. See http://www.blender.org/BL/ for information + * about this. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): none yet. + * + * ***** END GPL/BL DUAL LICENSE BLOCK ***** + */ + +#ifndef __RAS_LAPLACION2DFILTER +#define __RAS_LAPLACION2DFILTER + +char * LaplacionFragmentShader=STRINGIFY( +uniform sampler2D bgl_RenderedTexture; +uniform vec2 bgl_TextureCoordinateOffset[9]; + +void main(void) +{ + vec4 sample[9]; + + for (int i = 0; i < 9; i++) + { + sample[i] = texture2D(bgl_RenderedTexture, + gl_TexCoord[0].st + bgl_TextureCoordinateOffset[i]); + } + + gl_FragColor = (sample[4] * 8.0) - + (sample[0] + sample[1] + sample[2] + + sample[3] + sample[5] + + sample[6] + sample[7] + sample[8]); + gl_FragColor = vec4(gl_FragColor.rgb, 1.0); +} +); +#endif + |