init

2026-03-27 07:06:16 +01:00
commit 1541961403
340 changed files with 151916 additions and 0 deletions
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+
+//!DESC unsharp-masking_sharpen
+//!HOOK MAIN
+//!BIND HOOKED
+
+#define SHARPEN 1.0   // terrible when over 3
+
+vec4 hook()
+{
+    const float st1 = 1.2;
+    vec4 p = HOOKED_tex(HOOKED_pos);
+    vec4 sum1 = HOOKED_texOff(st1 * vec2(+1, +1))
+              + HOOKED_texOff(st1 * vec2(+1, -1))
+              + HOOKED_texOff(st1 * vec2(-1, +1))
+              + HOOKED_texOff(st1 * vec2(-1, -1));
+    const float st2 = 1.5;
+    vec4 sum2 = HOOKED_texOff(st2 * vec2(+1,  0))
+              + HOOKED_texOff(st2 * vec2( 0, +1))
+              + HOOKED_texOff(st2 * vec2(-1,  0))
+              + HOOKED_texOff(st2 * vec2( 0, -1));
+    vec4 t = p * 0.859375 + sum2 * -0.1171875 + sum1 * -0.09765625;
+    return p + t * SHARPEN;
+}
+