/indra/newview/app_settings/shaders/class1/deferred/skyF.glsl
Unknown | 64 lines | 54 code | 10 blank | 0 comment | 0 complexity | 5bcab4bd9894d28849b3ccadecf550d0 MD5 | raw file
Possible License(s): LGPL-2.1
- /**
- * @file WLSkyF.glsl
- *
- * $LicenseInfo:firstyear=2005&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2005, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
- * $/LicenseInfo$
- */
-
- #ifdef DEFINE_GL_FRAGCOLOR
- out vec4 gl_FragData[3];
- #endif
- /////////////////////////////////////////////////////////////////////////
- // The fragment shader for the sky
- /////////////////////////////////////////////////////////////////////////
- VARYING vec4 vary_HazeColor;
- uniform sampler2D cloud_noise_texture;
- uniform vec4 gamma;
- /// Soft clips the light with a gamma correction
- vec3 scaleSoftClip(vec3 light) {
- //soft clip effect:
- light = 1. - clamp(light, vec3(0.), vec3(1.));
- light = 1. - pow(light, gamma.xxx);
- return light;
- }
- void main()
- {
- // Potential Fill-rate optimization. Add cloud calculation
- // back in and output alpha of 0 (so that alpha culling kills
- // the fragment) if the sky wouldn't show up because the clouds
- // are fully opaque.
- vec4 color;
- color = vary_HazeColor;
- color *= 2.;
- /// Gamma correct for WL (soft clip effect).
- gl_FragData[0] = vec4(scaleSoftClip(color.rgb), 1.0);
- gl_FragData[1] = vec4(0.0,0.0,0.0,0.0);
- gl_FragData[2] = vec4(0,0,1,0);
- }