CUDA float texture

Hi, I am trying to use float4 textures. I use cuda array created with cudaCreateChannelDesc() and pitch=width4sizeof(float). Both cudaMallocArray and cudaMemcpy2DToArray were executed without errors; however, I get an error on cudaCreateTextureObject: “read as normalized float not supported for 32-bit non float type”. I think I’m missing something.

Thanks