* add support for AHardwareBuffer to the java bindings
Texture.setEXternalIamge() now can take a AHArdwreBuffer Java object
as a parameter.
* add an API to set the priority of the Skybox
by default the skybox is always drawn last (priority 7) in order to
reduce overdraw. however, when depth culling is not enabled, it
needs to be drawn first. The new Builder::priority() allows to set
an arbitrary priority for the skybox.
* add rendertarget support for external textures
This was in fact mostly already supported, we just were artificially
preventing that usage. It is supported by the EGL_external_image
extension.
It's the responsibility of the caller/user to not attempt to use an
incompatible format, which has undefined behavior.
FIXES=[466395306]
* add a new android sample to test the AHardwareBuffer as render target
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Co-authored-by: Powei Feng <powei@google.com>
a8ee48c4b7