-// A simple, very stupid horizontal blur. Will be fixed soonish.
+// A simple unidirectional blur.
+
+#define NUM_TAPS 16
+
+uniform vec4 PREFIX(samples)[NUM_TAPS + 1];
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 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;
}