/indra/newview/app_settings/shaders/class2/effects/nightVisionF.glsl
https://bitbucket.org/lindenlab/viewer-beta/ · GLSL · 62 lines · 18 code · 11 blank · 33 comment · 0 complexity · 38d158967e100df3b793ff3ad42f2840 MD5 · raw file
- /**
- * @file nightVisionF.glsl
- *
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2007, 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
- * $/LicenseInfo$
- */
-
- uniform sampler2DRect RenderTexture;
- uniform sampler2D NoiseTexture;
- uniform float brightMult;
- uniform float noiseStrength;
- float luminance(vec3 color)
- {
- /// CALCULATING LUMINANCE (Using NTSC lum weights)
- /// http://en.wikipedia.org/wiki/Luma_%28video%29
- return dot(color, vec3(0.299, 0.587, 0.114));
- }
- void main(void)
- {
- /// Get scene color
- vec3 color = vec3(texture2DRect(RenderTexture, gl_TexCoord[0].st));
-
- /// Extract luminance and scale up by night vision brightness
- float lum = luminance(color) * brightMult;
- /// Convert into night vision color space
- /// Newer NVG colors (crisper and more saturated)
- vec3 outColor = (lum * vec3(0.91, 1.21, 0.9)) + vec3(-0.07, 0.1, -0.12);
- /// Add noise
- float noiseValue = texture2D(NoiseTexture, gl_TexCoord[1].st).r;
- noiseValue = (noiseValue - 0.5) * noiseStrength;
- /// Older NVG colors (more muted)
- // vec3 outColor = (lum * vec3(0.82, 0.75, 0.83)) + vec3(0.05, 0.32, -0.11);
-
- outColor += noiseValue;
- gl_FragColor = vec4(outColor, 1.0);
- }