On Feb 13, 2012, at 1:16 PM, Paul Miller wrote:
> When I specify for example a data window such as (-70,-154)-(649,331) for a
> 720x486 image and then call writePixels(486), the library is crashing down in
> copyFromFrameBuffer().
>
> Perhaps this is the way I am adding Slices to my frame-buffer?
>
> for (int i = 0; i < channels; i++)
> {
> const half *pixels = pixPtr + i;
> frameBuffer.insert(chanName, Slice(HALF, (char *)(pixels), sizeof(half)
> * channels, sizeof(half) * width * channels));
> }
>
> I am basing this on "3.2 Writing a Cropped Image" in the reading/writing
> document. Though my RGBA pixels are packed into a single buffer.
>
> What am I doing wrong?
I think you probably need to offset the pixel pointer to point at where pixel
(0, 0) would be - section 2.2 explains the pixel pointer math a bit clearer.
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