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Win32: Clean up DWM detection

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This commit is contained in:
Camilla Löwy 2018-08-12 13:58:30 +02:00
parent d4cbe451fc
commit a67d8afbd4
3 changed files with 37 additions and 26 deletions
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34
src/wgl_context.c
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@ -256,12 +256,20 @@ static void makeContextCurrentWGL(_GLFWwindow* window)
static void swapBuffersWGL(_GLFWwindow* window) static void swapBuffersWGL(_GLFWwindow* window)
{ {
// HACK: Use DwmFlush when desktop composition is enabled if (!window->monitor)
if (_glfwIsCompositionEnabledWin32() && !window->monitor)
{ {
int count = abs(window->context.wgl.interval); if (IsWindowsVistaOrGreater())
while (count--) {
DwmFlush(); BOOL enabled;
// HACK: Use DwmFlush when desktop composition is enabled
if (SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled)
{
int count = abs(window->context.wgl.interval);
while (count--)
DwmFlush();
}
}
} }
SwapBuffers(window->context.wgl.dc); SwapBuffers(window->context.wgl.dc);
@ -273,10 +281,18 @@ static void swapIntervalWGL(int interval)
window->context.wgl.interval = interval; window->context.wgl.interval = interval;
// HACK: Disable WGL swap interval when desktop composition is enabled to if (!window->monitor)
// avoid interfering with DWM vsync {
if (_glfwIsCompositionEnabledWin32() && !window->monitor) if (IsWindowsVistaOrGreater())
interval = 0; {
BOOL enabled;
// HACK: Disable WGL swap interval when desktop composition is enabled to
// avoid interfering with DWM vsync
if (SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled)
interval = 0;
}
}
if (_glfw.wgl.EXT_swap_control) if (_glfw.wgl.EXT_swap_control)
_glfw.wgl.SwapIntervalEXT(interval); _glfw.wgl.SwapIntervalEXT(interval);

1
src/win32_platform.h
View File

@ -396,7 +396,6 @@ typedef struct _GLFWmutexWin32
GLFWbool _glfwRegisterWindowClassWin32(void); GLFWbool _glfwRegisterWindowClassWin32(void);
void _glfwUnregisterWindowClassWin32(void); void _glfwUnregisterWindowClassWin32(void);
GLFWbool _glfwIsCompositionEnabledWin32(void);
WCHAR* _glfwCreateWideStringFromUTF8Win32(const char* source); WCHAR* _glfwCreateWideStringFromUTF8Win32(const char* source);
char* _glfwCreateUTF8FromWideStringWin32(const WCHAR* source); char* _glfwCreateUTF8FromWideStringWin32(const WCHAR* source);

28
src/win32_window.c
View File

@ -351,10 +351,12 @@ static void updateWindowStyles(const _GLFWwindow* window)
// //
static void updateFramebufferTransparency(const _GLFWwindow* window) static void updateFramebufferTransparency(const _GLFWwindow* window)
{ {
BOOL enabled;
if (!IsWindowsVistaOrGreater()) if (!IsWindowsVistaOrGreater())
return; return;
if (_glfwIsCompositionEnabledWin32()) if (SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled)
{ {
HRGN region = CreateRectRgn(0, 0, -1, -1); HRGN region = CreateRectRgn(0, 0, -1, -1);
DWM_BLURBEHIND bb = {0}; DWM_BLURBEHIND bb = {0};
@ -1221,20 +1223,6 @@ void _glfwUnregisterWindowClassWin32(void)
UnregisterClassW(_GLFW_WNDCLASSNAME, GetModuleHandleW(NULL)); UnregisterClassW(_GLFW_WNDCLASSNAME, GetModuleHandleW(NULL));
} }
// Returns whether desktop compositing is enabled
//
GLFWbool _glfwIsCompositionEnabledWin32(void)
{
if (IsWindowsVistaOrGreater())
{
BOOL enabled;
if (SUCCEEDED(DwmIsCompositionEnabled(&enabled)))
return enabled;
}
return FALSE;
}
////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////
////// GLFW platform API ////// ////// GLFW platform API //////
@ -1632,7 +1620,15 @@ int _glfwPlatformWindowHovered(_GLFWwindow* window)
int _glfwPlatformFramebufferTransparent(_GLFWwindow* window) int _glfwPlatformFramebufferTransparent(_GLFWwindow* window)
{ {
return window->win32.transparent && _glfwIsCompositionEnabledWin32(); BOOL enabled;
if (!window->win32.transparent)
return GLFW_FALSE;
if (!IsWindowsVistaOrGreater())
return GLFW_FALSE;
return SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled;
} }
void _glfwPlatformSetWindowResizable(_GLFWwindow* window, GLFWbool enabled) void _glfwPlatformSetWindowResizable(_GLFWwindow* window, GLFWbool enabled)