Implement GL_OES_EGL_image_external support.

BUG=14610416

Change-Id: I9ca6d1779c7b6f1b28d5d5665264815881ee01b5
Reviewed-on: https://swiftshader-review.googlesource.com/1071
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
22 files changed
tree: f3aee8ce53f107f0dd5cc179cb78ad71a602f213
  1. include/
  2. src/
  3. tests/
  4. Readme.txt