tree 0c81084bea6fe5770562d2d79c9e67bdd65e7a40
parent 766e05b70c5d689d193fba3de7d1239a00eb82e4
author Yilong Li <liyl@google.com> 1601684636 -0700
committer Yilong Li <liyl@google.com> 1601684636 -0700

MVKImagePlane: Reset _mtlTexture after releasing.

For an MVKImage, when we call vkUseIOSurfaceMVK(),
the MTLTexture of each plane will be released but not
reset. And later when we destroy the MVKImage, the
destructor of MVKImagePlane calls releaseMTLTexture()
again, which will cause a crash because of double releasing
of an object.

To solve this we need to reset _mtlTexture to nil after
it is successfully released.