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GDK/Win32: Force GLES if running on ARM64

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If GLES support is enabled on Windows, force GLES mode if we are running
on a ARM64 version of Windows (i.e. Windows 10 for ARM).

This is required as ARM64 versions of Windows only provide a software
implementation of OpenGL 1.1/1.2, which is not enough for our purposes.
Thus, we could make instead use the GLES support provided via Google's
libANGLE (which emulates OpenGL/ES 3 with Direct3D 9/11), so that we
can run GtkGLArea programs under OpenGL/ES in ARM64 versions of Windows.

Note that eventually we could update the libepoxy build files for Windows
to not check nor enable WGL when building for ARM64 Windows, as the WGL
items do not work, although they do build.
This commit is contained in:
Chun-wei Fan
2019-05-07 00:09:03 -07:00
parent b8b966ef80
commit 98996aa60b
3 changed files with 53 additions and 1 deletions
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11
gdk/win32/gdkdisplay-win32.h
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@ -60,6 +60,13 @@ typedef struct _GdkWin32User32DPIFuncs
funcIsProcessDPIAware isDpiAwareFunc;
} GdkWin32User32DPIFuncs;
/* Detect running architecture */
typedef BOOL (WINAPI *funcIsWow64Process2) (HANDLE, USHORT *, USHORT *);
typedef struct _GdkWin32KernelCPUFuncs
{
funcIsWow64Process2 isWow64Process2;
} GdkWin32KernelCPUFuncs;
struct _GdkWin32Display
{
GdkDisplay display;
@ -109,6 +116,10 @@ struct _GdkWin32Display
GdkWin32ShcoreFuncs shcore_funcs;
GdkWin32User32DPIFuncs user32_dpi_funcs;
/* Running CPU items */
guint running_on_arm64 : 1;
GdkWin32KernelCPUFuncs cpu_funcs;
};
struct _GdkWin32DisplayClass