X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=blur_effect.frag;h=c6e4cf5465e7cbf62178edd8e231d8c962b8c1d2;hp=8c0a01d6216c35bdb59836fbe6a8d831dc2e2fee;hb=b09a4cb8dec09bcd1e42026d5b229b57e620e47c;hpb=f25eed80a570ae049f03b098757a070188efbc39;ds=sidebyside

diff --git a/blur_effect.frag b/blur_effect.frag
index 8c0a01d..c6e4cf5 100644
--- a/blur_effect.frag
+++ b/blur_effect.frag
@@ -1,24 +1,14 @@
 // A simple unidirectional blur.
 
-uniform vec2 PREFIX(pixel_offset);
-uniform float PREFIX(weight)[15];
+#define NUM_TAPS 16
+
+uniform vec4 PREFIX(samples)[NUM_TAPS + 1];
 
 vec4 FUNCNAME(vec2 tc) {
-	vec4 x = LAST_INPUT(tc);
-	return
-		vec4(PREFIX(weight)[ 0]) * LAST_INPUT(tc - 7.0 * PREFIX(pixel_offset)) +
-		vec4(PREFIX(weight)[ 1]) * LAST_INPUT(tc - 6.0 * PREFIX(pixel_offset)) +
-		vec4(PREFIX(weight)[ 2]) * LAST_INPUT(tc - 5.0 * PREFIX(pixel_offset)) +
-		vec4(PREFIX(weight)[ 3]) * LAST_INPUT(tc - 4.0 * PREFIX(pixel_offset)) +
-		vec4(PREFIX(weight)[ 4]) * LAST_INPUT(tc - 3.0 * PREFIX(pixel_offset)) +
-		vec4(PREFIX(weight)[ 5]) * LAST_INPUT(tc - 2.0 * PREFIX(pixel_offset)) +
-		vec4(PREFIX(weight)[ 6]) * LAST_INPUT(tc -       PREFIX(pixel_offset)) +
-		vec4(PREFIX(weight)[ 7]) * LAST_INPUT(tc) +
-		vec4(PREFIX(weight)[ 8]) * LAST_INPUT(tc +       PREFIX(pixel_offset)) +
-		vec4(PREFIX(weight)[ 9]) * LAST_INPUT(tc + 2.0 * PREFIX(pixel_offset)) +
-		vec4(PREFIX(weight)[10]) * LAST_INPUT(tc + 3.0 * PREFIX(pixel_offset)) +
-		vec4(PREFIX(weight)[11]) * LAST_INPUT(tc + 4.0 * PREFIX(pixel_offset)) +
-		vec4(PREFIX(weight)[12]) * LAST_INPUT(tc + 5.0 * PREFIX(pixel_offset)) +
-		vec4(PREFIX(weight)[13]) * LAST_INPUT(tc + 6.0 * PREFIX(pixel_offset)) +
-		vec4(PREFIX(weight)[14]) * LAST_INPUT(tc + 7.0 * PREFIX(pixel_offset));
+	vec4 sum = vec4(PREFIX(samples)[0].z) * INPUT(tc);
+	for (int i = 1; i < NUM_TAPS + 1; ++i) {
+		vec4 sample = PREFIX(samples)[i];
+		sum += vec4(sample.z) * (INPUT(tc - sample.xy) + INPUT(tc + sample.xy));
+	}
+	return sum;
 }