From 817d1d755b72b531b4107a259e618131fad94c50 Mon Sep 17 00:00:00 2001 From: Tofu Linden Date: Thu, 28 Jan 2010 23:58:50 -0800 Subject: 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. --- indra/newview/app_settings/shaders/class1/lighting/lightFuncV.glsl | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'indra/newview/app_settings/shaders/class1') 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; } -- cgit v1.2.3