post-processing test

res/shaders/screen.glslv

@@ -0,0 +1,12 @@
+layout (location = 0) in vec2 v_position;
+
+out vec2 v_coord;
+
+uniform ivec2 u_screenSize;
+uniform float u_timer;
+
+void main(){
+	v_coord = v_position * 0.5 + 0.5;
+	gl_Position = vec4(v_position, 0.0, 1.0);
+}
+