From a831136347eebc92019c121c5834a7e0fe629eef Mon Sep 17 00:00:00 2001 From: Tofu Linden Date: Fri, 29 Jan 2010 00:22:13 -0800 Subject: spot-aware light func usage in ALL shaders. --- .../shaders/class1/deferred/alphaV.glsl | 14 +++++++------- .../shaders/class1/deferred/avatarAlphaV.glsl | 14 +++++++------- .../shaders/class1/lighting/lightFuncV.glsl | 22 +--------------------- .../shaders/class2/deferred/alphaV.glsl | 14 +++++++------- .../shaders/class2/deferred/avatarAlphaV.glsl | 14 +++++++------- .../shaders/class2/lighting/sumLightsV.glsl | 9 ++++----- .../shaders/class3/lighting/sumLightsV.glsl | 15 ++++++++------- 7 files changed, 41 insertions(+), 61 deletions(-) diff --git a/indra/newview/app_settings/shaders/class1/deferred/alphaV.glsl b/indra/newview/app_settings/shaders/class1/deferred/alphaV.glsl index 1a7d58b07b..91793a29d3 100644 --- a/indra/newview/app_settings/shaders/class1/deferred/alphaV.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/alphaV.glsl @@ -9,7 +9,7 @@ vec4 calcLighting(vec3 pos, vec3 norm, vec4 color, vec4 baseCol); void calcAtmospherics(vec3 inPositionEye); float calcDirectionalLight(vec3 n, vec3 l); -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); vec3 atmosAmbient(vec3 light); vec3 atmosAffectDirectionalLight(float lightIntensity); @@ -49,12 +49,12 @@ void main() col.rgb = scaleUpLight(col.rgb); // Collect normal lights (need to be divided by two, as we later multiply by 2) - col.rgb += gl_LightSource[2].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[2].position, gl_LightSource[2].linearAttenuation); - col.rgb += gl_LightSource[3].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[3].position, gl_LightSource[3].linearAttenuation); - col.rgb += gl_LightSource[4].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[4].position, gl_LightSource[4].linearAttenuation); - col.rgb += gl_LightSource[5].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[5].position, gl_LightSource[5].linearAttenuation); - col.rgb += gl_LightSource[6].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[6].position, gl_LightSource[6].linearAttenuation); - col.rgb += gl_LightSource[7].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[7].position, gl_LightSource[7].linearAttenuation); + col.rgb += gl_LightSource[2].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[2].position, gl_LightSource[2].spotDirection.xyz, gl_LightSource[2].linearAttenuation, gl_LightSource[2].specular.a); + col.rgb += gl_LightSource[3].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[3].position, gl_LightSource[3].spotDirection.xyz, gl_LightSource[3].linearAttenuation, gl_LightSource[3].specular.a); + col.rgb += gl_LightSource[4].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[4].position, gl_LightSource[4].spotDirection.xyz, gl_LightSource[4].linearAttenuation, gl_LightSource[4].specular.a); + col.rgb += gl_LightSource[5].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[5].position, gl_LightSource[5].spotDirection.xyz, gl_LightSource[5].linearAttenuation, gl_LightSource[5].specular.a); + col.rgb += gl_LightSource[6].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[6].position, gl_LightSource[6].spotDirection.xyz, gl_LightSource[6].linearAttenuation, gl_LightSource[6].specular.a); + col.rgb += gl_LightSource[7].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[7].position, gl_LightSource[7].spotDirection.xyz, gl_LightSource[7].linearAttenuation, gl_LightSource[7].specular.a); col.rgb += gl_LightSource[1].diffuse.rgb*calcDirectionalLight(norm, gl_LightSource[1].position.xyz); col.rgb = scaleDownLight(col.rgb); diff --git a/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaV.glsl b/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaV.glsl index c1988d3c78..e36564df10 100644 --- a/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaV.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaV.glsl @@ -10,7 +10,7 @@ mat4 getSkinnedTransform(); void calcAtmospherics(vec3 inPositionEye); float calcDirectionalLight(vec3 n, vec3 l); -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); vec3 atmosAmbient(vec3 light); vec3 atmosAffectDirectionalLight(float lightIntensity); @@ -55,12 +55,12 @@ void main() col.rgb = scaleUpLight(col.rgb); // Collect normal lights (need to be divided by two, as we later multiply by 2) - col.rgb += gl_LightSource[2].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[2].position, gl_LightSource[2].linearAttenuation); - col.rgb += gl_LightSource[3].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[3].position, gl_LightSource[3].linearAttenuation); - col.rgb += gl_LightSource[4].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[4].position, gl_LightSource[4].linearAttenuation); - col.rgb += gl_LightSource[5].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[5].position, gl_LightSource[5].linearAttenuation); - col.rgb += gl_LightSource[6].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[6].position, gl_LightSource[6].linearAttenuation); - col.rgb += gl_LightSource[7].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[7].position, gl_LightSource[7].linearAttenuation); + col.rgb += gl_LightSource[2].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[2].position, gl_LightSource[2].spotDirection.xyz, gl_LightSource[2].linearAttenuation, gl_LightSource[2].specular.a); + col.rgb += gl_LightSource[3].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[3].position, gl_LightSource[3].spotDirection.xyz, gl_LightSource[3].linearAttenuation, gl_LightSource[3].specular.a); + col.rgb += gl_LightSource[4].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[4].position, gl_LightSource[4].spotDirection.xyz, gl_LightSource[4].linearAttenuation, gl_LightSource[4].specular.a); + col.rgb += gl_LightSource[5].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[5].position, gl_LightSource[5].spotDirection.xyz, gl_LightSource[5].linearAttenuation, gl_LightSource[5].specular.a); + col.rgb += gl_LightSource[6].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[6].position, gl_LightSource[6].spotDirection.xyz, gl_LightSource[6].linearAttenuation, gl_LightSource[6].specular.a); + col.rgb += gl_LightSource[7].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[7].position, gl_LightSource[7].spotDirection.xyz, gl_LightSource[7].linearAttenuation, gl_LightSource[7].specular.a); col.rgb += gl_LightSource[1].diffuse.rgb*calcDirectionalLight(norm, gl_LightSource[1].position.xyz); col.rgb = scaleDownLight(col.rgb); diff --git a/indra/newview/app_settings/shaders/class1/lighting/lightFuncV.glsl b/indra/newview/app_settings/shaders/class1/lighting/lightFuncV.glsl index 2e41f24afe..d0f58cc1a4 100644 --- a/indra/newview/app_settings/shaders/class1/lighting/lightFuncV.glsl +++ b/indra/newview/app_settings/shaders/class1/lighting/lightFuncV.glsl @@ -12,28 +12,8 @@ float calcDirectionalLight(vec3 n, vec3 l) return a; } -float calcPointLight(vec3 v, vec3 n, vec4 lp, 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 *= calcDirectionalLight(n, lv); - - return da; -} - -float calcPointLight2(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float is_omnidirectional) +float calcPointlightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float is_pointlight) { //get light vector vec3 lv = lp.xyz-v; diff --git a/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl b/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl index 5991e1f3b5..eec655e3df 100644 --- a/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl +++ b/indra/newview/app_settings/shaders/class2/deferred/alphaV.glsl @@ -9,7 +9,7 @@ vec4 calcLighting(vec3 pos, vec3 norm, vec4 color, vec4 baseCol); void calcAtmospherics(vec3 inPositionEye); float calcDirectionalLight(vec3 n, vec3 l); -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); vec3 atmosAmbient(vec3 light); vec3 atmosAffectDirectionalLight(float lightIntensity); @@ -50,12 +50,12 @@ void main() col.rgb = scaleUpLight(col.rgb); // Collect normal lights (need to be divided by two, as we later multiply by 2) - col.rgb += gl_LightSource[2].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[2].position, gl_LightSource[2].linearAttenuation); - col.rgb += gl_LightSource[3].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[3].position, gl_LightSource[3].linearAttenuation); - col.rgb += gl_LightSource[4].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[4].position, gl_LightSource[4].linearAttenuation); - col.rgb += gl_LightSource[5].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[5].position, gl_LightSource[5].linearAttenuation); - col.rgb += gl_LightSource[6].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[6].position, gl_LightSource[6].linearAttenuation); - col.rgb += gl_LightSource[7].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[7].position, gl_LightSource[7].linearAttenuation); + col.rgb += gl_LightSource[2].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[2].position, gl_LightSource[2].spotDirection.xyz, gl_LightSource[2].linearAttenuation, gl_LightSource[2].specular.a); + col.rgb += gl_LightSource[3].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[3].position, gl_LightSource[3].spotDirection.xyz, gl_LightSource[3].linearAttenuation, gl_LightSource[3].specular.a); + col.rgb += gl_LightSource[4].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[4].position, gl_LightSource[4].spotDirection.xyz, gl_LightSource[4].linearAttenuation, gl_LightSource[4].specular.a); + col.rgb += gl_LightSource[5].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[5].position, gl_LightSource[5].spotDirection.xyz, gl_LightSource[5].linearAttenuation, gl_LightSource[5].specular.a); + col.rgb += gl_LightSource[6].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[6].position, gl_LightSource[6].spotDirection.xyz, gl_LightSource[6].linearAttenuation, gl_LightSource[6].specular.a); + col.rgb += gl_LightSource[7].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[7].position, gl_LightSource[7].spotDirection.xyz, gl_LightSource[7].linearAttenuation, gl_LightSource[7].specular.a); col.rgb += gl_LightSource[1].diffuse.rgb*calcDirectionalLight(norm, gl_LightSource[1].position.xyz); col.rgb = scaleDownLight(col.rgb); diff --git a/indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl b/indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl index a939499b17..488bd677e1 100644 --- a/indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl +++ b/indra/newview/app_settings/shaders/class2/deferred/avatarAlphaV.glsl @@ -10,7 +10,7 @@ mat4 getSkinnedTransform(); void calcAtmospherics(vec3 inPositionEye); float calcDirectionalLight(vec3 n, vec3 l); -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); vec3 atmosAmbient(vec3 light); vec3 atmosAffectDirectionalLight(float lightIntensity); @@ -61,12 +61,12 @@ void main() col.rgb = scaleUpLight(col.rgb); // Collect normal lights (need to be divided by two, as we later multiply by 2) - col.rgb += gl_LightSource[2].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[2].position, gl_LightSource[2].linearAttenuation); - col.rgb += gl_LightSource[3].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[3].position, gl_LightSource[3].linearAttenuation); - col.rgb += gl_LightSource[4].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[4].position, gl_LightSource[4].linearAttenuation); - col.rgb += gl_LightSource[5].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[5].position, gl_LightSource[5].linearAttenuation); - col.rgb += gl_LightSource[6].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[6].position, gl_LightSource[6].linearAttenuation); - col.rgb += gl_LightSource[7].diffuse.rgb*calcPointLight(pos.xyz, norm, gl_LightSource[7].position, gl_LightSource[7].linearAttenuation); + col.rgb += gl_LightSource[2].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[2].position, gl_LightSource[2].spotDirection.xyz, gl_LightSource[2].linearAttenuation, gl_LightSource[2].specular.a); + col.rgb += gl_LightSource[3].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[3].position, gl_LightSource[3].spotDirection.xyz, gl_LightSource[3].linearAttenuation, gl_LightSource[3].specular.a); + col.rgb += gl_LightSource[4].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[4].position, gl_LightSource[4].spotDirection.xyz, gl_LightSource[4].linearAttenuation, gl_LightSource[4].specular.a); + col.rgb += gl_LightSource[5].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[5].position, gl_LightSource[5].spotDirection.xyz, gl_LightSource[5].linearAttenuation, gl_LightSource[5].specular.a); + col.rgb += gl_LightSource[6].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[6].position, gl_LightSource[6].spotDirection.xyz, gl_LightSource[6].linearAttenuation, gl_LightSource[6].specular.a); + col.rgb += gl_LightSource[7].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[7].position, gl_LightSource[7].spotDirection.xyz, gl_LightSource[7].linearAttenuation, gl_LightSource[7].specular.a); col.rgb += gl_LightSource[1].diffuse.rgb*calcDirectionalLight(norm, gl_LightSource[1].position.xyz); col.rgb = scaleDownLight(col.rgb); diff --git a/indra/newview/app_settings/shaders/class2/lighting/sumLightsV.glsl b/indra/newview/app_settings/shaders/class2/lighting/sumLightsV.glsl index 4577b4be55..19800d96dc 100644 --- a/indra/newview/app_settings/shaders/class2/lighting/sumLightsV.glsl +++ b/indra/newview/app_settings/shaders/class2/lighting/sumLightsV.glsl @@ -6,8 +6,7 @@ */ float calcDirectionalLight(vec3 n, vec3 l); -float calcPointLight(vec3 v, vec3 n, vec4 lp, float la); -float calcPointLight2(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float is_omnidirectional); +float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float is_pointlight); vec3 atmosAmbient(vec3 light); vec3 atmosAffectDirectionalLight(float lightIntensity); @@ -20,9 +19,9 @@ vec4 sumLights(vec3 pos, vec3 norm, vec4 color, vec4 baseLight) // Collect normal lights (need to be divided by two, as we later multiply by 2) col.rgb += gl_LightSource[1].diffuse.rgb * calcDirectionalLight(norm, gl_LightSource[1].position.xyz); - col.rgb += gl_LightSource[2].diffuse.rgb * calcPointLight2(pos, norm, gl_LightSource[2].position, gl_LightSource[2].spotDirection.xyz, gl_LightSource[2].linearAttenuation, gl_LightSource[2].specular.a); - col.rgb += gl_LightSource[3].diffuse.rgb * calcPointLight2(pos, norm, gl_LightSource[3].position, gl_LightSource[3].spotDirection.xyz, gl_LightSource[3].linearAttenuation, gl_LightSource[3].specular.a); - //col.rgb += gl_LightSource[4].diffuse.rgb * calcPointLight2(pos, norm, gl_LightSource[4].position, gl_LightSource[4].spotDirection.xyz, gl_LightSource[4].linearAttenuation, gl_LightSource[4].specular.a); + col.rgb += gl_LightSource[2].diffuse.rgb * calcPointLightOrSpotLight(pos, norm, gl_LightSource[2].position, gl_LightSource[2].spotDirection.xyz, gl_LightSource[2].linearAttenuation, gl_LightSource[2].specular.a); + col.rgb += gl_LightSource[3].diffuse.rgb * calcPointLightOrSpotLight(pos, norm, gl_LightSource[3].position, gl_LightSource[3].spotDirection.xyz, gl_LightSource[3].linearAttenuation, gl_LightSource[3].specular.a); + //col.rgb += gl_LightSource[4].diffuse.rgb * calcPointLightOrSpotLight(pos, norm, gl_LightSource[4].position, gl_LightSource[4].spotDirection.xyz, gl_LightSource[4].linearAttenuation, gl_LightSource[4].specular.a); col.rgb = scaleDownLight(col.rgb); // Add windlight lights diff --git a/indra/newview/app_settings/shaders/class3/lighting/sumLightsV.glsl b/indra/newview/app_settings/shaders/class3/lighting/sumLightsV.glsl index 1c5234c450..0fdfdf2dde 100644 --- a/indra/newview/app_settings/shaders/class3/lighting/sumLightsV.glsl +++ b/indra/newview/app_settings/shaders/class3/lighting/sumLightsV.glsl @@ -6,7 +6,7 @@ */ float calcDirectionalLight(vec3 n, vec3 l); -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); vec3 atmosAmbient(vec3 light); vec3 atmosAffectDirectionalLight(float lightIntensity); @@ -24,12 +24,13 @@ vec4 sumLights(vec3 pos, vec3 norm, vec4 color, vec4 baseLight) col.rgb = scaleUpLight(col.rgb); // Collect normal lights (need to be divided by two, as we later multiply by 2) - col.rgb += gl_LightSource[2].diffuse.rgb*calcPointLight(pos, norm, gl_LightSource[2].position, gl_LightSource[2].linearAttenuation); - col.rgb += gl_LightSource[3].diffuse.rgb*calcPointLight(pos, norm, gl_LightSource[3].position, gl_LightSource[3].linearAttenuation); - col.rgb += gl_LightSource[4].diffuse.rgb*calcPointLight(pos, norm, gl_LightSource[4].position, gl_LightSource[4].linearAttenuation); - col.rgb += gl_LightSource[5].diffuse.rgb*calcPointLight(pos, norm, gl_LightSource[5].position, gl_LightSource[5].linearAttenuation); - col.rgb += gl_LightSource[6].diffuse.rgb*calcPointLight(pos, norm, gl_LightSource[6].position, gl_LightSource[6].linearAttenuation); - col.rgb += gl_LightSource[7].diffuse.rgb*calcPointLight(pos, norm, gl_LightSource[7].position, gl_LightSource[7].linearAttenuation); + + col.rgb += gl_LightSource[2].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[2].position, gl_LightSource[2].spotDirection.xyz, gl_LightSource[2].linearAttenuation, gl_LightSource[2].specular.a); + col.rgb += gl_LightSource[3].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[3].position, gl_LightSource[3].spotDirection.xyz, gl_LightSource[3].linearAttenuation, gl_LightSource[3].specular.a); + col.rgb += gl_LightSource[4].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[4].position, gl_LightSource[4].spotDirection.xyz, gl_LightSource[4].linearAttenuation, gl_LightSource[4].specular.a); + col.rgb += gl_LightSource[5].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[5].position, gl_LightSource[5].spotDirection.xyz, gl_LightSource[5].linearAttenuation, gl_LightSource[5].specular.a); + col.rgb += gl_LightSource[6].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[6].position, gl_LightSource[6].spotDirection.xyz, gl_LightSource[6].linearAttenuation, gl_LightSource[6].specular.a); + col.rgb += gl_LightSource[7].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[7].position, gl_LightSource[7].spotDirection.xyz, gl_LightSource[7].linearAttenuation, gl_LightSource[7].specular.a); col.rgb += gl_LightSource[1].diffuse.rgb*calcDirectionalLight(norm, gl_LightSource[1].position.xyz); col.rgb = scaleDownLight(col.rgb); -- cgit v1.2.3