extern "C"
__global__ void invert(uchar4* data, int w, int h)
{
int x = threadIdx.x+blockIdx.x*blockDim.x;
int y = threadIdx.y+blockIdx.y*blockDim.y;
if (x < w && y < h)
{
int index = y*w+x;
uchar4 pixel = data[index];
pixel.x = 255 - pixel.x;
pixel.y = 255 - pixel.y;
pixel.z = 255 - pixel.z;
pixel.w = 255 - pixel.w;
data[index] = pixel;
}
}
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Andrey Filippov authoreded43abc2