[Mesa-dev] INTEL_map_texture on i915/i965
pnguyen at bostondynamics.com
Thu Aug 16 16:53:01 UTC 2018
Cool. Thanks Lionel!
On Thu, Aug 16, 2018 at 12:03 PM Lionel Landwerlin <
lionel.g.landwerlin at intel.com> wrote:
> Hey Phi,
> I can confirm this extension isn't implemented in Mesa.
> I don't why it wasn't.
> Talking briefly with Jason, it seems that mapping texture makes less sense
> on Skylake and above generations.
> There we maintain compressed version of the textures in memory to further
> reduce memory bandwidth.
> 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).
> On 16/08/18 14:23, Phi Nguyen wrote:
> I hope to use the zero-memory copy on the Iris Pro 6200
> The extension
> <https://www.khronos.org/registry/OpenGL/extensions/INTEL/INTEL_map_texture.txt> says
> only OpenGL 3.0 is required yet it does not show up on Ubuntu 18.04. I saw
> a post from 2016
> <https://lists.freedesktop.org/archives/mesa-dev/2016-January/105850.html> mentioning
> this feature, but that didn't get any replies.
> Does an implementation of this even exist? How would I go about getting
> Thank you,
> mesa-dev mailing listmesa-dev at lists.freedesktop.orghttps://lists.freedesktop.org/mailman/listinfo/mesa-dev
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