[Mesa-dev] [RFC PATCH 00/11] Add support for ARB_compressed_texture_pixel_storage

Ian Romanick idr at freedesktop.org
Mon Jun 2 15:36:18 PDT 2014

On 06/01/2014 11:29 PM, Chris Forbes wrote:
> This series adds support for ARB_compressed_texture_pixel_storage from GL4.2. This
> provides a convenient way to update a subrectangle of a compressed texture from client memory or a pixel buffer object, without having to rearrange the client copy.
> (Well, as convenient as GL pixel store state ever is to work with...)
> All the work is in the core mesa fallbacks (which are called eventually, even in
> the cases where a custom driver func is present for these cases), so this is enabled
> on all drivers.
> Patch 1 does some preliminary cleanup of PixelStorei. Once upon a time, this function
> had flushes etc in it, and so tried to avoid spurious updates. The flushes were
> removed, but the update-avoidance machinery (two copies of it in some cases) was all left in place. Just rip it out, merge some error paths, etc.
> Patch 2 tidies up some inconsistent error reporting in CompressedTex*Image.
> Patches 3-6 add extension plumbing and new pack/unpack state.
> Patches 7-10 make the new state actually work.
> Error generation for imageSize isn't quite right, when the user-provided block dimensions disagree with the actual format's block dimensions, but this is complete enough to be useful, so I figured I'd send it out with an RFC tag.

Which patch is that?  I can go back and look closer.

> No regressions in quick.py on Ivybridge.
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