Rift Display Mode 'Direct' causing crash.

Hi,


I am getting some weird behaviour when setting the Rift Display Mode to 'Direct'.
I create my GL context using SDL2, with these calls:

	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);
	SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
	glcontext = SDL_GL_CreateContext(window);

This works if the Rift Display Mode is set to 'Extended Desktop'.
When set to 'Direct' I get an access violation at addr 0 when executing the SDL_GL_CreateContext() call.

Why would context creation suddenly be different, if the Direct mode is used?
Is it not the same GL driver running on the same GPU?

Another thing I noticed is that in Extended Desktop, with a properly created context, calling ovrHmd_ConfigureRendering() will cause a GL_INVALID_ENUM.

	ovrGLConfig cfg;
	cfg.OGL.Header.API = ovrRenderAPI_OpenGL;
	cfg.OGL.Header.RTSize = OVR::Sizei(hmd->Resolution.w, hmd->Resolution.h);
	cfg.OGL.Header.Multisample = 1;
#ifdef _WIN32
	if (!(hmd->HmdCaps & ovrHmdCap_ExtendDesktop))
		ovrHmd_AttachToWindow(hmd, info.info.win.window, NULL, NULL);

	cfg.OGL.Window = info.info.win.window;
	cfg.OGL.DC = NULL;
#endif

	CHECK_OGL

	ovrHmd_ConfigureRendering(hmd, &cfg.Config, ovrDistortionCap_Chromatic | ovrDistortionCap_Vignette | ovrDistortionCap_TimeWarp | ovrDistortionCap_Overdrive, eyeFov, eyeRenderDesc);

Any suggestions what could be causing these problems?

Bram