Second Life viewer sources 1.19.1.0

1 files changed, 41 insertions, 0 deletions

diff --git a/linden/indra/newview/app_settings/shaders/class2/windlight/skyF.glsl b/linden/indra/newview/app_settings/shaders/class2/windlight/skyF.glsl
new file mode 100644
index 0000000..bc6d6d3
--- /dev/null
+++ b/linden/indra/newview/app_settings/shaders/class2/windlight/skyF.glsl
@@ -0,0 +1,41 @@
+/** 
+ * @file WLSkyF.glsl
+ *
+ * Copyright (c) 2005-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+/////////////////////////////////////////////////////////////////////////
+// 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_FragColor.rgb = scaleSoftClip(color.rgb);
+        gl_FragColor.a = 1.0;
+}
+