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<div class="moz-cite-prefix">Hey Phi,<br>
<br>
I can confirm this extension isn't implemented in Mesa.<br>
I don't why it wasn't.<br>
<br>
Talking briefly with Jason, it seems that mapping texture makes
less sense on Skylake and above generations.<br>
There we maintain compressed version of the textures in memory to
further reduce memory bandwidth.<br>
This would make the memory mapped mechanism more costly because we
would need to decompress the texture when you want to access it
(probably close to a ReadPixels in terms of performance).<br>
<br>
-<br>
Lionel<br>
<br>
On 16/08/18 14:23, Phi Nguyen wrote:<br>
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<blockquote type="cite"
cite="mid:CAPssK5O1DNVcOciS3uYsqyHNcfUnVfbs=2g=D3i=hLpXwFAL9A@mail.gmail.com">
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<div dir="ltr">Hi,
<div><br>
</div>
<div>I hope to use the zero-memory copy on the Iris Pro 6200
(Broadwell/Skylake).</div>
<div><br>
</div>
<div>The <a
href="https://www.khronos.org/registry/OpenGL/extensions/INTEL/INTEL_map_texture.txt"
moz-do-not-send="true">extension</a> says only OpenGL 3.0 is
required yet it does not show up on Ubuntu 18.04. I saw a
post from <a
href="https://lists.freedesktop.org/archives/mesa-dev/2016-January/105850.html"
moz-do-not-send="true">2016</a> mentioning this feature, but
that didn't get any replies.</div>
<div><br>
</div>
<div>Does an implementation of this even exist? How would I go
about getting it?</div>
<div><br>
</div>
<div>Thank you,</div>
<div>Phi</div>
</div>
<br>
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