SHADER_radialblurGPU "programs/radialblurGPU.frag" "Source" SHADER_radialblurGPU_ports "programs/radialblurGPU_ports.vert" SHADER_radialblurGPU_bbox "programs/radialblurGPU_bbox.vert" isotropic vec2 center point_ui Center float radius length 3 0 10000 float blur percent 0.3 0 10000 radius_ui Radius radius center compass_ui Center center