diff --git a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl index dc484317e9ecc8afd2f461a5cd03d53869dd7ec1..d3a05c34c0fe51184c63160848547d312a114ab8 100644 --- a/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/alphaF.glsl @@ -86,6 +86,14 @@ float getAmbientClamp(); vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 diffuse, vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight, float ambiance) { + // SL-14895 inverted attenuation work-around + // This routine is tweaked to match deferred lighting, but previously used an inverted la value. To reconstruct + // that previous value now that the inversion is corrected, we reverse the calculations in LLPipeline::setupHWLights() + // to recover the `adjusted_radius` value previously being sent as la. + float falloff_factor = (12.0 * fa) - 9.0; + float inverted_la = falloff_factor / la; + // Yes, it makes me want to cry as well. DJH + vec3 col = vec3(0); //get light vector @@ -95,7 +103,7 @@ vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 diffuse, vec3 v, vec3 n, vec float dist = length(lv); float da = 1.0; - /*if (dist > la) + /*if (dist > inverted_la) { return col; } @@ -113,9 +121,9 @@ vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 diffuse, vec3 v, vec3 n, vec return col; }*/ - if (dist > 0.0 && la > 0.0) + if (dist > 0.0 && inverted_la > 0.0) { - dist /= la; + dist /= inverted_la; //normalize light vector lv = normalize(lv); diff --git a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl index e1f7031af6ad587650665da70158588d8cf16da0..02d83925eaaf29ad4e8c15d8327e7612b71b6dc5 100644 --- a/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/materialF.glsl @@ -91,6 +91,14 @@ float getAmbientClamp(); vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 npos, vec3 diffuse, vec4 spec, vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float fa, float is_pointlight, inout float glare, float ambiance) { + // SL-14895 inverted attenuation work-around + // This routine is tweaked to match deferred lighting, but previously used an inverted la value. To reconstruct + // that previous value now that the inversion is corrected, we reverse the calculations in LLPipeline::setupHWLights() + // to recover the `adjusted_radius` value previously being sent as la. + float falloff_factor = (12.0 * fa) - 9.0; + float inverted_la = falloff_factor / la; + // Yes, it makes me want to cry as well. DJH + vec3 col = vec3(0); //get light vector @@ -100,9 +108,9 @@ vec3 calcPointLightOrSpotLight(vec3 light_col, vec3 npos, vec3 diffuse, vec4 spe float dist = length(lv); float da = 1.0; - dist /= la; + dist /= inverted_la; - if (dist > 0.0 && la > 0.0) + if (dist > 0.0 && inverted_la > 0.0) { //normalize light vector lv = normalize(lv);