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 +1,5 @@
+vec4 effect() {
+    vec3 color = texture(u_screen, v_uv).rgb;
+    float m = (color.r + color.g + color.b) / 3.0;
+    return vec4(mix(color, vec3(m), u_intensity), 1.0);
+}