Make the blur into a simple, Gaussian horizontal blur. Still not very good.

[movit] / blur_effect.frag

diff --git a/blur_effect.frag b/blur_effect.frag
index bfa1d16de06386ffd57297e9996668abea40bd1f..51ff39a58c33d44b5a241a2f1a82864485c85383 100644 (file)
--- a/blur_effect.frag
+++ b/blur_effect.frag
@@ -1,17 +1,24 @@
 // A simple, very stupid horizontal blur. Will be fixed soonish.
 
+uniform float PREFIX(pixel_offset);
+uniform float PREFIX(weight)[15];
+
 vec4 FUNCNAME(vec2 tc) {
        vec4 x = LAST_INPUT(tc);
        return
-               vec4(0.1) * LAST_INPUT(tc + vec2(-0.010f, 0.0)) +
-               vec4(0.1) * LAST_INPUT(tc + vec2(-0.008f, 0.0)) +
-               vec4(0.1) * LAST_INPUT(tc + vec2(-0.006f, 0.0)) +
-               vec4(0.1) * LAST_INPUT(tc + vec2(-0.004f, 0.0)) +
-               vec4(0.2) * LAST_INPUT(tc + vec2(-0.002f, 0.0)) +
-               vec4(0.3) * LAST_INPUT(tc + vec2(-0.000f, 0.0)) +
-               vec4(0.2) * LAST_INPUT(tc + vec2( 0.002f, 0.0)) +
-               vec4(0.1) * LAST_INPUT(tc + vec2( 0.004f, 0.0)) +
-               vec4(0.1) * LAST_INPUT(tc + vec2( 0.006f, 0.0)) +
-               vec4(0.1) * LAST_INPUT(tc + vec2( 0.008f, 0.0)) +
-               vec4(0.1) * LAST_INPUT(tc + vec2( 0.010f, 0.0));
+               vec4(PREFIX(weight)[ 0]) * LAST_INPUT(vec2(tc.x - 7.0 * PREFIX(pixel_offset), tc.y)) +
+               vec4(PREFIX(weight)[ 1]) * LAST_INPUT(vec2(tc.x - 6.0 * PREFIX(pixel_offset), tc.y)) +
+               vec4(PREFIX(weight)[ 2]) * LAST_INPUT(vec2(tc.x - 5.0 * PREFIX(pixel_offset), tc.y)) +
+               vec4(PREFIX(weight)[ 3]) * LAST_INPUT(vec2(tc.x - 4.0 * PREFIX(pixel_offset), tc.y)) +
+               vec4(PREFIX(weight)[ 4]) * LAST_INPUT(vec2(tc.x - 3.0 * PREFIX(pixel_offset), tc.y)) +
+               vec4(PREFIX(weight)[ 5]) * LAST_INPUT(vec2(tc.x - 2.0 * PREFIX(pixel_offset), tc.y)) +
+               vec4(PREFIX(weight)[ 6]) * LAST_INPUT(vec2(tc.x -       PREFIX(pixel_offset), tc.y)) +
+               vec4(PREFIX(weight)[ 7]) * LAST_INPUT(tc) +
+               vec4(PREFIX(weight)[ 8]) * LAST_INPUT(vec2(tc.x +       PREFIX(pixel_offset), tc.y)) +
+               vec4(PREFIX(weight)[ 9]) * LAST_INPUT(vec2(tc.x + 2.0 * PREFIX(pixel_offset), tc.y)) +
+               vec4(PREFIX(weight)[10]) * LAST_INPUT(vec2(tc.x + 3.0 * PREFIX(pixel_offset), tc.y)) +
+               vec4(PREFIX(weight)[11]) * LAST_INPUT(vec2(tc.x + 4.0 * PREFIX(pixel_offset), tc.y)) +
+               vec4(PREFIX(weight)[12]) * LAST_INPUT(vec2(tc.x + 5.0 * PREFIX(pixel_offset), tc.y));
+               vec4(PREFIX(weight)[13]) * LAST_INPUT(vec2(tc.x + 6.0 * PREFIX(pixel_offset), tc.y));
+               vec4(PREFIX(weight)[14]) * LAST_INPUT(vec2(tc.x + 7.0 * PREFIX(pixel_offset), tc.y));
 }