Loading images with noise distortion.

content/imagine.gdshader

@@ -0,0 +1,22 @@
+shader_type canvas_item;
+
+uniform sampler2D ripples: repeat_enable;
+uniform float warp;
+uniform float time_scale = 0.1f;
+
+vec3 hmap_normal(sampler2D hmap, vec2 uv) {
+	float eps = 0.01f;
+	float z = texture(hmap, uv).z;
+	return normalize(vec3(
+		(texture(hmap, uv + vec2(eps, 0)).z - z) / eps,
+		(texture(hmap, uv + vec2(0, eps)).z - z) / eps,
+		-1
+	));
+}
+
+void fragment() {
+	//vec3 normal = texture(ripples, UV + vec2(TIME * time_scale, 0)).xyz;
+	vec3 normal = hmap_normal(ripples, UV + vec2(TIME * time_scale, 0));
+	vec4 col = texture(TEXTURE, UV + normal.xy * warp).rgba;
+	COLOR.rgb = col.rgb;
+}