mathematically calculate gaussian blur radius

2019-03-28 13:34:58 +11:00
parent 1adca7f2cc
commit c468d023b0
2 changed files with 4 additions and 4 deletions
@@ -4,7 +4,7 @@

 uniform sampler2D image;

-uniform float radius;
+//uniform float radius;
 uniform float sigma;
 uniform vec2 resolution;
 uniform bool horiz_blur;
@@ -22,7 +22,7 @@ float gaussian2(float x, float y, float sigma) {
 }

 void main(void) {
-	float rad = ceil(radius);
+	float rad = ceil(3.0 * sigma);

 	float sum = 0.0;

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <effect name="Gaussian Blur" category="Blur">
-	<row name="Radius">
+	<!-- <row name="Radius">
 		<field type="double" min="0" default="10" id="radius"/>
-	</row>
+	</row> -->
 	<row name="Sigma">
 		<field type="double" min="0" default="5.5" id="sigma"/>
 	</row>