[Mesa-dev] [PATCH] meta: rework dest image allocation in mipmap generation code

[Eric Anholt]

On Sat, 10 Dec 2011 12:00:27 -0700, Brian Paul <brianp at vmware.com> wrote:
> This fixes two things:
> 1. If the texture object was created with glTexStorage2D, the call
>    to _mesa_TexImage2D() would generate INVALID_OPERATION since the
>    texture is marked as immutable.
> 2. _mesa_TexImage2D() always frees any existing texture image memory
>    before allocating new memory.  That's inefficient since the existing
>    image is usually the right size already.

Reviewed-by: Eric Anholt <eric at anholt.net>
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