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<a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - Nearest neighbor scaling?"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94820">bug 94820</a>
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<table border="1" cellspacing="0" cellpadding="8">
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>RESOLVED
</td>
<td>REOPENED
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<td style="text-align:right;">Resolution</td>
<td>DUPLICATE
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<td>---
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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - Nearest neighbor scaling?"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94820#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - Nearest neighbor scaling?"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94820">bug 94820</a>
from <span class="vcard"><a class="email" href="mailto:nw9165-3201@yahoo.com" title="nw9165-3201@yahoo.com">nw9165-3201@yahoo.com</a>
</span></b>
<pre>(In reply to Michel Dänzer from <a href="show_bug.cgi?id=94820#c3">comment #3</a>)
<span class="quote">> Grigori, see the patch and discussion on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Nearest neighbor scaling?"
href="show_bug.cgi?id=94816">bug 94816</a>.</span >
Why are you pointing him to the xrandr patch?
I think Grigori means something else.
With the xrandr patch, the scaling happens in software, right?
What Grigori most likely means is, that AMD GPUs/APUs most probably have a
dedicated hardware scaler in their GPU which could be used for image scaling
instead of xrandr?
I'm fairly sure the GPU must have a dedicated hardware scaler, otherwise it
could not scale up the image on POST.
AMD GPUs even default to underscan on POST (on a lot of displays), so there
must be a hardware scaler in use/available.
In his case this hardware scaler seems to be using a bicubic filter.
What he (and me) would like to know is how one could tell the hardware scaler
to use nearest neighbor filtering instead of bicubic/bilinear filtering.
Or does xrandr actually utilize the dedicated hardware scaler inside the GPU?
Can anyone comment on this please?
Regards</pre>
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