44 lines
990 B
GLSL
44 lines
990 B
GLSL
/**
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* @file WLSkyF.glsl
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*
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* Copyright (c) 2005-$CurrentYear$, Linden Research, Inc.
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* $License$
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*/
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/////////////////////////////////////////////////////////////////////////
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// The fragment shader for the sky
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/////////////////////////////////////////////////////////////////////////
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varying vec4 vary_HazeColor;
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uniform sampler2D cloud_noise_texture;
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uniform vec4 gamma;
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/// Soft clips the light with a gamma correction
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vec3 scaleSoftClip(vec3 light) {
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//soft clip effect:
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light = 1. - clamp(light, vec3(0.), vec3(1.));
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light = 1. - pow(light, gamma.xxx);
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return light;
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}
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void main()
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{
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// Potential Fill-rate optimization. Add cloud calculation
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// back in and output alpha of 0 (so that alpha culling kills
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// the fragment) if the sky wouldn't show up because the clouds
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// are fully opaque.
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vec4 color;
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color = vary_HazeColor;
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color *= 2.;
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/// Gamma correct for WL (soft clip effect).
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gl_FragColor.rgb = scaleSoftClip(color.rgb);
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gl_FragColor.a = 1.0;
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}
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