texture_binder.hpp

/*
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 *  Author: Anatoly Baskeheev, Itseez Ltd, (myname.mysurname@mycompany.com)
 */
 
#ifndef PCL_GPU_UTILS_TEXTURE_BINDER_HPP_
#define PCL_GPU_UTILS_TEXTURE_BINDER_HPP_
 
#include <pcl/gpu/utils/safe_call.hpp>
#include <pcl/gpu/containers/device_array.h>
 
namespace pcl
{
  namespace gpu
  {
    class TextureBinder
    {
    public:        
      template<class T, enum cudaTextureReadMode readMode>
      TextureBinder(const DeviceArray2D<T>& arr, const struct texture<T, 2, readMode>& tex) : texref(&tex)
      {
        cudaChannelFormatDesc desc = cudaCreateChannelDesc<T>();  
        cudaSafeCall( cudaBindTexture2D(0, tex, arr.ptr(), desc, arr.cols(), arr.rows(), arr.step()) );        
      }
 
      template<class T, enum cudaTextureReadMode readMode>
      TextureBinder(const DeviceArray<T>& arr, const struct texture<T, 1, readMode> &tex) : texref(&tex)
      {
        cudaChannelFormatDesc desc = cudaCreateChannelDesc<T>();  
        cudaSafeCall( cudaBindTexture(0, tex, arr.ptr(), desc, arr.sizeBytes()) );
      }
 
      template<class T, enum cudaTextureReadMode readMode>
      TextureBinder(const PtrStepSz<T>& arr, const struct texture<T, 2, readMode>& tex) : texref(&tex)
      {
        cudaChannelFormatDesc desc = cudaCreateChannelDesc<T>();  
        cudaSafeCall( cudaBindTexture2D(0, tex, arr.data, desc, arr.cols, arr.rows, arr.step) );        
      }
 
      template<class T, enum cudaTextureReadMode readMode>
      TextureBinder(const PtrSz<T>& arr, const struct texture<T, 1, readMode> &tex) : texref(&tex)
      {
        cudaChannelFormatDesc desc = cudaCreateChannelDesc<T>();  
        cudaSafeCall( cudaBindTexture(0, tex, arr.data, desc, arr.size * arr.elemSize()) );
      }
 
      ~TextureBinder()
      {
        cudaSafeCall( cudaUnbindTexture(texref) );
      }
    private:
      const struct textureReference *texref;    
    };
  }
 
  namespace device
  {
      using pcl::gpu::TextureBinder;
  }
}
 
#endif /* PCL_GPU_UTILS_TEXTURE_BINDER_HPP_*/