1 files changed, 25 insertions, 0 deletions

diff --git a/linden/indra/newview/app_settings/shaders/class3/environment/scatterF.glsl b/linden/indra/newview/app_settings/shaders/class3/environment/scatterF.glsl
new file mode 100644
index 0000000..7a9245f
--- /dev/null
+++ b/linden/indra/newview/app_settings/shaders/class3/environment/scatterF.glsl
@@ -0,0 +1,25 @@
+uniform sampler2D scatterMap;
+
+//for per-pixel scatter
+vec4 getScatter(vec3 viewVec, vec3 lightDir)
+{
+   vec2 scatterCoord;
+   scatterCoord.x = length(viewVec);
+   vec3 normVec = viewVec / scatterCoord.x;
+   scatterCoord.y = dot(normVec, lightDir)*0.5 + 0.5;   
+   scatterCoord.x = scatterCoord.x / gl_Fog.end;
+   scatterCoord.x *= scatterCoord.x; // HACK!! Remove this when we can push the view distance farther out
+   return texture2D(scatterMap, scatterCoord) * vec4(gl_Fog.color.rgb, 1.0);
+}
+
+void applyScatter(inout vec3 color, vec4 haze)
+{
+        color.rgb = haze.rgb + haze.a * color.rgb;   
+}
+
+//for per-vertex scatter
+void applyScatter(inout vec3 color)
+{
+        vec4 haze = texture2D(scatterMap, gl_TexCoord[5].xy) * vec4(gl_Fog.color.rgb, 1.0);
+        color.rgb = haze.rgb + haze.a * color.rgb;
+}