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path: root/indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl
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Diffstat (limited to 'indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl')
-rw-r--r--indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl8
1 files changed, 4 insertions, 4 deletions
diff --git a/indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl b/indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl
index 9c7a332417..84c27edb26 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl
@@ -66,17 +66,17 @@ float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, floa
vec3 lv = lp.xyz-v;
//get distance
- float d = length(lv);
+ float d = dot(lv,lv);
float da = 0.0;
if (d > 0.0 && la > 0.0 && fa > 0.0)
{
//normalize light vector
- lv *= 1.0/d;
+ lv = normalize(lv);
//distance attenuation
- float dist2 = d*d/(la*la);
+ float dist2 = d/la;
da = clamp(1.0-(dist2-1.0*(1.0-fa))/fa, 0.0, 1.0);
// spotlight coefficient.
@@ -84,7 +84,7 @@ float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, floa
da *= spot*spot; // GL_SPOT_EXPONENT=2
//angular attenuation
- da *= calcDirectionalLight(n, lv);
+ da *= max(dot(n, lv), 0.0);
}
return da;