X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=vignette_effect.frag;h=e8d185f6165f912b325fd61e3caef7e4c8cd5b68;hp=54fafffca138342f8aa1f33993862a02eefe201f;hb=974b5c837c24179f9ab29f4ffdcdd1172288172b;hpb=24660d2111d0ee97228016a7072304ff657d297b

diff --git a/vignette_effect.frag b/vignette_effect.frag
index 54fafff..e8d185f 100644
--- a/vignette_effect.frag
+++ b/vignette_effect.frag
@@ -1,14 +1,17 @@
 // A simple, circular vignette, with a cos² falloff.
-	
-uniform float PREFIX(pihalf_div_radius);
-uniform vec2 PREFIX(aspect_correction);
+
+// Implicit uniforms:
+// uniform float PREFIX(pihalf_div_radius);
+//
+// uniform vec2 PREFIX(aspect_correction);
+// uniform vec2 PREFIX(flipped_center);
 
 vec4 FUNCNAME(vec2 tc) {
 	vec4 x = INPUT(tc);
 
 	const float pihalf = 0.5 * 3.14159265358979324;
 
-	vec2 normalized_pos = (tc - PREFIX(center)) * PREFIX(aspect_correction);
+	vec2 normalized_pos = (tc - PREFIX(flipped_center)) * PREFIX(aspect_correction);
 	float dist = (length(normalized_pos) - PREFIX(inner_radius)) * PREFIX(pihalf_div_radius);
 	float linear_falloff = clamp(dist, 0.0, pihalf);
 	float falloff = cos(linear_falloff) * cos(linear_falloff);