Fix AdditiveColorGradient, Corona, and LightTable shaders

Those shaders broke after adding an alpha channel to the color type.

Task-number: QT3DS-3392
Change-Id: Icba8079e30a9a08398d80c197b397394e3491e89
Reviewed-by: Jari Karppinen <jari.karppinen@qt.io>
Reviewed-by: Antti Määttä <antti.maatta@qt.io>
Reviewed-by: Tomi Korpipää <tomi.korpipaa@qt.io>
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>

3 files changed, 3 insertions, 3 deletions

diff --git a/Studio/Content/Effect Library/AdditiveColorGradient.effect b/Studio/Content/Effect Library/AdditiveColorGradient.effect
index 45965a4c..71319635 100644
--- a/Studio/Content/Effect Library/AdditiveColorGradient.effect
+++ b/Studio/Content/Effect Library/AdditiveColorGradient.effect
@@ -17,7 +17,7 @@ void frag()
     vec4 origColor = texture2D_0(TexCoord);
     vec2 uv = TexCoord.xy;
 
-    vec4 gradient = vec4(mix(vec4(bottom_color, 1.0), vec4(top_color, 1.0), uv.y));
+    vec4 gradient = vec4(mix(vec4(bottom_color.rgb, 1.0), vec4(top_color.rgb, 1.0), uv.y));
 
     gl_FragColor = origColor + gradient;
 }
diff --git a/Studio/Content/Effect Library/Corona.effect b/Studio/Content/Effect Library/Corona.effect
index 1447c7e8..fb508120 100644
--- a/Studio/Content/Effect Library/Corona.effect
+++ b/Studio/Content/Effect Library/Corona.effect
@@ -61,7 +61,7 @@ void vert ()
 void frag() // PS_Blur_Vertical_9tap
 {   
     float OutCol = GaussianAlphaBlur( Texture0, Texture0Info.z );
-    gl_FragColor = OutCol * vec4(GlowCol, 1.0);
+    gl_FragColor = OutCol * vec4(GlowCol.rgb, 1.0);
 }
 			</FragmentShader>
 		</Shader>
diff --git a/Studio/Content/Effect Library/LightTable.effect b/Studio/Content/Effect Library/LightTable.effect
index 0c8b84f0..91f59131 100644
--- a/Studio/Content/Effect Library/LightTable.effect
+++ b/Studio/Content/Effect Library/LightTable.effect
@@ -181,7 +181,7 @@ void frag()
 	// We are basically acting as if the objects on the layer are occluders
 	// so the alpha as a result of blurring is like a transparency.
 	// The behavior is that the brighter the light is, the more of a "gap" there is
-	vec3 backlight = LightCol * LightBrt;
+	vec3 backlight = LightCol.rgb * LightBrt;
 	
 	// Assume that the color map I'm using already tells us what N.dot.L is (for now)
 	float translucency = exp2( -overTrn * OverlayTrans );