SurfaceTexture: enable RGB external textures

This change removes support for conditionally using the GL_TEXTURE_2D
target for SurfaceTexture textures with RGB buffers.  It also enables
and fixes the RGB-based SurfaceTexture tests.

Change-Id: I9a251a981cf66af6b048b2e4c3fe7231e4774f4d
3 files changed
tree: d9cbe360f67b810cbebdcf8e4c31995892cf4fcc
  1. cmds/
  2. include/
  3. libs/
  4. opengl/
  5. services/
  6. MODULE_LICENSE_APACHE2
  7. NOTICE