globals.h

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#ifndef __GLOBALS_H
#define __GLOBALS_H

//extern "C" void launch_kernel(uchar4*, unsigned int, unsigned int, int);
extern "C" void init_cuda(void *h_volume, cudaExtent volumeSize, int dataset_nr);
extern "C" void freeCudaBuffers();
extern "C" void launch_volren(dim3 gridSize, dim3 blockSize, dim3 volumeSize, uint *d_output, uint imageW, uint imageH, 
                                   float density, float brightness, float transferOffset, float transferScale);
extern "C" void copyInvViewMatrix(float *invViewMatrix, size_t sizeofMatrix);
extern "C" void launch_DepthOfField(dim3 gridSize, dim3 blockSize, dim3 volumeSize, uint *d_output, uint imageW, uint imageH, 
                                   float density, float brightness, float transferOffset, float transferScale, float alpha, bool viewChanged, 
                                   float4 focusPoint, float4 camPos, float tstep);
extern "C" void init_Cuda_DoF(int image_width, int image_height);
extern "C" void freeCudaDofBuffers();

typedef unsigned char VolumeType;
typedef unsigned int  uint;
typedef unsigned char uchar;



// --------------------------------------------------------------------------
static void HandleError( cudaError_t err,
                         const char *file,
                         int line ) {
    if (err != cudaSuccess) {
        printf( "%s (%d) in %s at line %d\n", cudaGetErrorString( err ), err, 
                file, line );
        exit( EXIT_FAILURE );
    }
}

// macro for error handling cuda functions
#define HANDLE_ERROR( err ) (HandleError( err, __FILE__, __LINE__ ))

#endif