* D3D11 you query for interface with UUID of
{A7AA6116-9C8D-4BBA-9083-B4D816B71B78}. It's just IUnknown*
* GL implements GL_EXT_debug_tool with spec here:
https://renderdoc.org/debug_tool.txt
with DEBUG_TOOL_EXT #define'd to 0x6789, DEBUG_TOOL_NAME_EXT to 0x678A
and DEBUG_TOOL_PURPOSE_EXT to 0x678B. For now, reporting this ext is
enough to identify RenderDoc.
* Also in many places OpenGL is now advertised as full support, since it
is pretty close by now and needs people to jump on it full-time and
use it in anger.
baldurk