new shaders

shaders/017_blur/blur.gdshader

@@ -0,0 +1,15 @@
+shader_type spatial;
+render_mode unshaded;
+
+uniform sampler2D SCREEN_TEXTURE: hint_screen_texture, repeat_disable, filter_nearest;
+uniform float blur_power: hint_range(0.0, 0.2, 0.001) = 0.05;
+uniform sampler2D noise_texture;
+
+vec2 noise(vec2 uv) {
+	return texture(noise_texture, uv).xy - 0.5;
+}
+
+void fragment() {
+	vec2 uv = SCREEN_UV;
+	ALBEDO.rgb = texture(SCREEN_TEXTURE, uv + noise(uv)).rgb * blur_power;
+}