enable basic directional lighting for basic/atmospheric shaders - yay.

next, needs the non-shader GL lighting model to be equally dumb (it's too smart - kill the spot angle.

1 files changed, 21 insertions, 0 deletions

diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFuncV.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFuncV.glsl
index 3e8fdfb3e4..211de830fa 100644
--- a/indra/newview/app_settings/shaders/class1/lighting/lightFuncV.glsl
+++ b/indra/newview/app_settings/shaders/class1/lighting/lightFuncV.glsl
@@ -28,7 +28,28 @@ float calcPointLight(vec3 v, vec3 n, vec4 lp, float la)
 	
 	//angular attenuation
 	da *= calcDirectionalLight(n, lv);
+
+	return da;	
+}
+
+
+float calcPointLight2(vec3 v, vec3 n, vec4 lp, vec3 ln, float la)
+{
+	//get light vector
+	vec3 lv = lp.xyz-v;
 	
+	//get distance
+	float d = length(lv);
+	
+	//normalize light vector
+	lv *= 1.0/d;
+	
+	//distance attenuation
+	float da = clamp(1.0/(la * d), 0.0, 1.0);
+	
+	//angular attenuation
+	da *= dot(lv, -ln) * calcDirectionalLight(n, lv);
+
 	return da;	
 }