correct ch17

[book_gpu.git] / BookGPU / Chapters / chapter3 / code / kernSkel.cu

texture<short, 2, cudaReadModeElementType> tex_img_in ;

__global__ void kernel_ident( short *output, int w)
{  
  int j = __mul24(blockIdx.x,blockDim.x) + threadIdx.x ; 
  int i = __mul24( blockIdx.y, blockDim.y) + threadIdx.y ;

  output[ __mul24(i, w) + j ] = tex2D(tex_img_in, j, i) ;

}