[BUG] Double-buffering bug RADEON drivers (v15.7 - v19.3) on Windows 7

[radeonwin7bug]

Double-buffering bug RADEON drivers (v15.7 - v19.3, all versions) on Windows 7
Classic theme or Windows Basic theme (any no AERO themes)

This bug all new AMD cards 2014-2019 years:
- Radeon HD 7XXX;
- Radeon R5, R7, R9 series;
- Radeon RX 400, RX 500 series
with Radeon Driver - from Catalyst v15.7 to Radeon Adrenalin v19.3.1 (all versions)

NVidia and Intel video cards there are no problems!
Unfortunately, this problem is present on AMD drivers only.

Using "double-buffering patch" increase RADEON driver performance up 10-30 times!
Demonstration in the foobar2000 spectrum with FPS measurement using simpleGLUT.

No patch (WS_EX_COMPOSITED = OFF)
FPS = 25-60 (very big lags)

Used "double-buffering patch" (WS_EX_COMPOSITED = ON)
FPS = 850-920 (no lags)

Video demonstration -


Source code:

    #include <windows.h>
    #define WS_EX_COMPOSITED 0x02000000L
    static BOOL WINAPI EnumProc (HWND hwnd, LPARAM param)
    {
        DWORD style;
        style = (DWORD)GetWindowLong (hwnd, GWL_EXSTYLE);
        // ON
        SetWindowLong (hwnd, GWL_EXSTYLE, style | WS_EX_COMPOSITED);
        // OFF
        //SetWindowLong (hwnd, GWL_EXSTYLE, style & ~WS_EX_COMPOSITED);
        return TRUE;
    }

    void BoostWindows (void)
    {
        EnumWindows (EnumProc, 0l);
    }
    int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR szCmdLine, int nShowCmd)
    {
        BoostWindows ();
        return 0;
    }

 

[wither 2]

I just wanted to mention that a lot of the series you mention are now Legacy cards. The last driver for them is the Crimson 16.2.1 Beta. Not sure if that affects the problem you're referring to.