cheap no-branch goodness for rendering both spotlights and pointlights with the same shader code.

kill already-nerfed quadratic attenuation which it seems we won't be supporting any decade soon.

1 files changed, 5 insertions, 1 deletions

diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFuncV.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFuncV.glsl
index 4525bf80b2..2e41f24afe 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFuncV.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightFuncV.glsl
@@ -47,8 +47,12 @@ float calcPointLight2(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float is_omnid
 	//distance attenuation
 	float da = clamp(1.0/(la * d), 0.0, 1.0);
 	
+	// spotlight coefficient.
+	float spot = max(dot(-ln, lv), is_omnidirectional);
+	da *= spot*spot; // GL_SPOT_EXPONENT=2
+
 	//angular attenuation
-	da *= max(dot(-ln, lv),is_omnidirectional) * calcDirectionalLight(n, lv);
+	da *= calcDirectionalLight(n, lv);
 
 	return da;	
 }