[pixel shader] uniform float4 color; float4 main() : sv_target { float4 ret = color; ret.gb = ret.ra; ret.ra = float2(0.0101, 0.0404); return ret; } [test] uniform 0 float4 0.0303 0.08 0.07 0.0202 draw quad probe all rgba (0.0101, 0.0303, 0.0202, 0.0404)