Closing Dolphin's main frame and clicking "no" does not clear
m_bClosing which means that pressing the "stop" button triggers
OnClosed which suddenly and unexpectedly closes the main frame.
VideoInterface::Preset was not initializing all registers, this is a problem
because it leaks register settings across games. Xenoblade Chronicles does
not like m_DisplayControlRegister having random bit patterns in it.
The D3D backend was always forcing Anisotropic filtering when that is enabled regardless of how the game chose to configure the texture filtering registers; this causes the same issues as "Force Filtering" without Anisotropy, such as causing game UI elements to no longer line up adjacent correctly. Historically, OpenGL's Anisotropy support has always worked "better" than D3D's due to seeming to not have this problem; unfortunately, OpenGL's Anisotropy specification only gives GL_LINEAR based filtering modes defined behavior, with only the mipmap setting being required to be considered. Some OpenGL implementations were implicitly disabling Anisotropy when the min/mag filters were set to GL_NEAREST, but this behavior is not required by the spec so cannot be relied on.
EmptyChaos