diff options
Diffstat (limited to 'indra/newview/app_settings/shaders/class2/deferred')
| -rw-r--r-- | indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl index 78e4c179d7..5769288a36 100644 --- a/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl +++ b/indra/newview/app_settings/shaders/class2/deferred/softenLightF.glsl @@ -290,6 +290,14 @@ void main() depth -= 0.5; // unbias depth // first figure out where we'll make our 2D guess from vec2 ref2d = tc.xy + (0.25 * screen_res.y) * (refnorm.xy) * abs(refnorm.z) / depth; + // Offset the guess source a little according to a trivial + // checkerboard dither function and spec.a. + // This is meant to be similar to sampling a blurred version + // of the diffuse map. LOD would be better in that regard. + // The goal of the blur is to soften reflections in surfaces + // with low shinyness, and also to disguise our lameness. + float checkerboard = floor(mod(tc.x+tc.y, 2.0)); // 0.0, 1.0 + ref2d += normalize(ref2d)*14.0*(1.0-spec.a)*(checkerboard-0.5); // get attributes from the 2D guess point float refdepth = texture2DRect(depthMap, ref2d).a; vec3 refpos = getPosition_d(ref2d, refdepth).xyz; |