Post Game jam commit

shaders/pixelate_screen.gdshader

@@ -0,0 +1,22 @@
+shader_type canvas_item;
+
+// SUPER IMPORTANT, ELSE WE APPLY LIGHTNING TWICE!!
+render_mode unshaded;
+
+uniform sampler2D screen_texture : hint_screen_texture, repeat_disable, filter_nearest;
+uniform vec2 cam_pos;// move by a "sub_pixel" which is actually a full res pixel
+uniform vec2 scaling;
+
+void fragment() {
+	// move by a "sub_pixel" which is actually a full res pixel
+	vec2 sub_uv = SCREEN_UV + (cam_pos * SCREEN_PIXEL_SIZE);
+
+	// number of downscaled pixles in UV coords
+	vec2 pixels = SCREEN_PIXEL_SIZE * scaling;
+
+	// round down and read in the center of the pixel
+	vec2 pixel_uv = floor(sub_uv / pixels) + 0.5;
+
+	COLOR = texture(screen_texture, pixel_uv * pixels) ;
+}
+