X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=accelerator%2Fogl%2Fimage%2Fblending_glsl.h;h=326e6f7153044b4afaaf84e67882ea2a89592107;hb=0eab6d7ef8ee618924b4aac7c86f6f1b78d19fc5;hp=7d82f7c6d383aca7aa7e1f90035f6cb103065b0a;hpb=91d1217ae51579f9a2cd298d4395ae49bbe911d3;p=casparcg

diff --git a/accelerator/ogl/image/blending_glsl.h b/accelerator/ogl/image/blending_glsl.h
index 7d82f7c6d..326e6f715 100644
--- a/accelerator/ogl/image/blending_glsl.h
+++ b/accelerator/ogl/image/blending_glsl.h
@@ -30,7 +30,7 @@ static std::string get_adjustement_glsl()
 			** http://irrlicht.sourceforge.net/phpBB2/viewtopic.php?t=21057
 			*/
 
-			vec3 ContrastSaturationBrightness(vec3 color, float brt, float sat, float con)
+			vec3 ContrastSaturationBrightness(vec4 color, float brt, float sat, float con)
 			{
 				const float AvgLumR = 0.5;
 				const float AvgLumG = 0.5;
@@ -40,11 +40,17 @@ static std::string get_adjustement_glsl()
 						? vec3(0.0722, 0.7152, 0.2126)
 						: vec3(0.114, 0.587, 0.299);
 
+				if (color.a > 0.0)
+					color.rgb /= color.a;
+
 				vec3 AvgLumin = vec3(AvgLumR, AvgLumG, AvgLumB);
-				vec3 brtColor = color * brt;
+				vec3 brtColor = color.rgb * brt;
 				vec3 intensity = vec3(dot(brtColor, LumCoeff));
 				vec3 satColor = mix(intensity, brtColor, sat);
 				vec3 conColor = mix(AvgLumin, satColor, con);
+
+				conColor.rgb *= color.a;
+
 				return conColor;
 			}