On 2/13/2012 7:20 PM, Peter Hillman wrote:
On 14/02/12 11:44, Paul Miller wrote:
On 2/13/2012 4:33 PM, Ciaran Wills wrote:
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.
I tried that as well:
const half *pixels = pixPtr + chan_index;
pixels = pixels - dataWindow.min.x - (dataWindow.min.y * width);
fb.insert(chanName, Slice(HALF, (char *)(pixels), sizeof(half) *
channels, sizeof(half) * width * channels));
Shouldn't that be:
pixels = pixels - ( dataWindow.min.x - (dataWindow.min.y * width) ) *
channels;
Close!! It *was* the missing channels scale. The calculation should be:
pixels -= (dw.min.x + (dw.min.y * width)) * channels;
Sorry for the false alarm (and help!) guys.
(Piotr - your test code you sent worked perfectly, as expected).
Cheers!
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