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(win32) WS_EX_LAYERED drastically decreases performance, so only set it

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when needed (when opacity < 100).
This commit is contained in:
aliaspider 2018-01-13 07:53:13 +01:00
parent 728f77b2bc
commit 9cb896a3d9
2 changed files with 21 additions and 6 deletions
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3
gfx/common/win32_common.c
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@ -813,11 +813,14 @@ bool win32_window_create(void *data, unsigned style,
#if defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0500 /* 2K */ #if defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0500 /* 2K */
/* Windows 2000 and above use layered windows to enable transparency */ /* Windows 2000 and above use layered windows to enable transparency */
if(settings->uints.video_window_opacity < 100)
{
SetWindowLongPtr(main_window.hwnd, SetWindowLongPtr(main_window.hwnd,
GWL_EXSTYLE, GWL_EXSTYLE,
GetWindowLongPtr(main_window.hwnd, GWL_EXSTYLE) | WS_EX_LAYERED); GetWindowLongPtr(main_window.hwnd, GWL_EXSTYLE) | WS_EX_LAYERED);
SetLayeredWindowAttributes(main_window.hwnd, 0, (255 * SetLayeredWindowAttributes(main_window.hwnd, 0, (255 *
settings->uints.video_window_opacity) / 100, LWA_ALPHA); settings->uints.video_window_opacity) / 100, LWA_ALPHA);
}
#endif #endif
#endif #endif
return true; return true;

14
gfx/display_servers/dispserv_win32.c
View File

@ -113,8 +113,20 @@ static bool win32_set_window_opacity(void *data, unsigned opacity)
#if defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0500 #if defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0500
/* Set window transparency on Windows 2000 and above */ /* Set window transparency on Windows 2000 and above */
if (SetLayeredWindowAttributes(hwnd, 0, (255 * opacity) / 100, LWA_ALPHA)) if(opacity < 100)
{
SetWindowLongPtr(hwnd,
GWL_EXSTYLE,
GetWindowLongPtr(hwnd, GWL_EXSTYLE) | WS_EX_LAYERED);
return SetLayeredWindowAttributes(hwnd, 0, (255 * opacity) / 100, LWA_ALPHA);
}
else
{
SetWindowLongPtr(hwnd,
GWL_EXSTYLE,
GetWindowLongPtr(hwnd, GWL_EXSTYLE) & ~WS_EX_LAYERED);
return true; return true;
}
#endif #endif
return false; return false;
} }