return [[// extern vec2 redStrength = vec2(4.0, 3.0); extern vec2 greenStrength = vec2(-2.0, -1.0); extern vec2 blueStrength = vec2(1.0, -3.0); vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 pixel_coords) { vec2 pSize = vec2(1.0 / love_ScreenSize.x, 1.0 / love_ScreenSize.y); float colRed = Texel(texture, vec2(texture_coords.x + pSize.x * redStrength.x, texture_coords.y - pSize.y * redStrength.y)).r; float colGreen = Texel(texture, vec2(texture_coords.x + pSize.x * greenStrength.x, texture_coords.y - pSize.y * greenStrength.y)).g; float colBlue = Texel(texture, vec2(texture_coords.x + pSize.x * blueStrength.x, texture_coords.y - pSize.y * blueStrength.y)).b; return vec4(colRed, colGreen, colBlue, 1.0); } ]]