D3D11 interprets an index value of 0xFFFF in a 16-bit index buffer as a primitive restart marker. This behavior can't be toggled off. http://msdn.microsoft.com/en-us/library/windows/desktop/bb205124(v=vs.85).aspx We work around it by converting to 32-bit indices. BUG=angle:708 Change-Id: Ibc92d6ba98e5f11a98d76cae14f90ca050a19964 Reviewed-on: https://chromium-review.googlesource.com/211426Reviewed-by: Shannon Woods <shannonwoods@chromium.org> Tested-by: Nicolas Capens <capn@chromium.org>
