add test effects: grayscale and negative

2025-04-05 00:41:58 +03:00
parent ba170035ef
commit 5678700826
2 changed files with 11 additions and 0 deletions
@@ -0,0 +1,6 @@
+vec4 effect() {
+    vec4 color = texture(u_screen, v_uv);
+    color = mix(color, 1.0 - color, u_intensity);
+    color.a = 1.0;
+    return color;
+}