From e416840f85dc4a367894036b9fe483f17d959c54 Mon Sep 17 00:00:00 2001 From: Tofu Linden Date: Tue, 24 Aug 2010 19:22:00 +0100 Subject: Backed out changeset c3d41f18ce2b back-out the back-out for this branch. yay. --- .../newview/app_settings/shaders/class1/lighting/lightFuncV.glsl | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'indra/newview/app_settings/shaders/class1/lighting') diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFuncV.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFuncV.glsl index 3e8fdfb3e4..da49e59b89 100644 --- a/indra/newview/app_settings/shaders/class1/lighting/lightFuncV.glsl +++ b/indra/newview/app_settings/shaders/class1/lighting/lightFuncV.glsl @@ -12,7 +12,8 @@ float calcDirectionalLight(vec3 n, vec3 l) return a; } -float calcPointLight(vec3 v, vec3 n, vec4 lp, float la) + +float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float is_pointlight) { //get light vector vec3 lv = lp.xyz-v; @@ -26,9 +27,13 @@ float calcPointLight(vec3 v, vec3 n, vec4 lp, float la) //distance attenuation float da = clamp(1.0/(la * d), 0.0, 1.0); + // spotlight coefficient. + float spot = max(dot(-ln, lv), is_pointlight); + da *= spot*spot; // GL_SPOT_EXPONENT=2 + //angular attenuation da *= calcDirectionalLight(n, lv); - + return da; } -- cgit v1.2.3