tree 58320f058d90b300cb75d6b96f207f5d66ffe868
parent 740bbe32af648810633c92424283c699e732f62c
author Gert Wollny <gert.wollny@collabora.com> 1672476398 +0100
committer Marge Bot <emma+marge@anholt.net> 1672673015 +0000

format: add compressed formats directly by testing extensions

If a layout is usef for more texture formats than are defined in
just one extension, then this could lead to enabling compressed
formats that are actually not supported.

Do some cleanups too:

* Add the readback flag when on OpenGL because we have
  glGetCompressedTexImage,
* remove special handling for VIRGL_FORMAT_ETC1_RGB8 because it
  is actually not listed in the format tables,
* don't advertice ETC2 formats on OpenGL, because here
  CopyImageSubData doesn't support copying these formats, so
  let the guest handle these formats with the software fallback.

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/virgl/virglrenderer/-/merge_requests/1008>