Render frame.
Attention: bgfx::renderFrame is blocking call. It waits for
bgfx::frame to be called from API thread to process frame.
If timeout value is passed call will timeout and return even
if bgfx::frame is not called.
Warning: This call should be only used on platforms that don't
allow creating separate rendering thread. If it is called before
to bgfx::init, render thread won't be created by bgfx::init call.
Render frame. Attention: bgfx::renderFrame is blocking call. It waits for bgfx::frame to be called from API thread to process frame. If timeout value is passed call will timeout and return even if bgfx::frame is not called. Warning: This call should be only used on platforms that don't allow creating separate rendering thread. If it is called before to bgfx::init, render thread won't be created by bgfx::init call.