[Mesa-dev] [RFC] intel: add support for EGL_KHR_gl_image

[Eric Anholt]

Abdiel Janulgue <abdiel.janulgue at linux.intel.com> writes:

> This patch set adds support for KHR_gl_texture_2D_image,
> KHR_gl_texture_cubemap_image and KHR_gl_texture_3D_image for Gen 4 ->
> Gen7 HW. The extension enables us to be a bit more conformant to the
> spec in Android at least. I've tested it on SandyBridge and IvyBridge.
>
> The approach is to export a mipmap level to a DRIImage accounting for
> the level's offset from the surface base address including the x and y
> offsets on cubemap face or 3D texture slices.
>
> I've pushed it in git at gitorious.org/mesa3d/mesa.git KHR_gl_image
> branch. I'll submit a a separate piglit test to soon to piglit-dev.

Cool.  We really should have these extensions.

But we also really need some piglit tests to stress this.  The
intel_setup_image_from_mipmap_tree() code in this series can orphan
siblings the moment they're created.  intel_finalize_mipmap_tree() can
also do so currently.  We need to be able to track somehow where the
canonical miptree contents are and resolve our work back to it.
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