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Re: [Openexr-devel] how to properly save with data window?


From: Peter Hillman
Subject: Re: [Openexr-devel] how to properly save with data window?
Date: Tue, 14 Feb 2012 14:20:32 +1300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:9.0) Gecko/20111222 Thunderbird/9.0.1


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;

?




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