Commit 90a96efc84b7f0c8eb915bab05be4fb5ee114d3f
2016-01-27T14:53:36
Allow BufferGL to function without being able to map buffers for read. Reading back buffer data is required for index range validation but without glMapBufferRange it is not possible to read back buffer data on OpenGL ES. To work around this, keep a shadow copy of the buffer data when this function is not available. BUG=angleproject:1145 Change-Id: I8e9b3b174574316d3af0022bd29c7d9c96d168c3 Reviewed-on: https://chromium-review.googlesource.com/324092 Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>