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Handle transparency checks per platform, instead of in context.c

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This is needed because windows uses DWM for transparency, and that
happens at a different stage inside of win32_window.c.

This commit ensures framebuffer.transparent hint is updated once
a match is confirmed (or lack of a match).
This commit is contained in:
Bailey Cosier 2017-09-21 15:09:26 +07:00
parent 445e0c102d
commit 59fdba8057
4 changed files with 11 additions and 6 deletions
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6
src/context.c
View File

@ -318,12 +318,6 @@ const _GLFWfbconfig* _glfwChooseFBConfig(const _GLFWfbconfig* desired,
}
}
if (desired->transparent && closest->transparent != GLFW_TRUE)
{
// If we couldn't find a transparency match,
// update the fb hint for client checking.
_glfw.hints.framebuffer.transparent = GLFW_FALSE;
}
return closest;
}

3
src/egl_context.c
View File

@ -188,6 +188,9 @@ static GLFWbool chooseEGLConfig(const _GLFWctxconfig* ctxconfig,
if (closest)
*result = (EGLConfig) closest->handle;
if (desired->transparent && closest->transparent != GLFW_TRUE)
_glfw.hints.framebuffer.transparent = GLFW_FALSE;
free(nativeConfigs);
free(usableConfigs);

3
src/glx_context.c
View File

@ -141,6 +141,9 @@ static GLFWbool chooseGLXFBConfig(const _GLFWfbconfig* desired,
if (closest)
*result = (GLXFBConfig) closest->handle;
if (desired->transparent && closest->transparent != GLFW_TRUE)
_glfw.hints.framebuffer.transparent = GLFW_FALSE;
XFree(nativeConfigs);
free(usableConfigs);

5
src/win32_window.c
View File

@ -988,6 +988,7 @@ static int createNativeWindow(_GLFWwindow* window,
WCHAR* wideTitle;
DWORD style = getWindowStyle(window);
DWORD exStyle = getWindowExStyle(window);
GLFWbool transparent = GLFW_FALSE;
if (window->monitor)
{
@ -1061,6 +1062,7 @@ static int createNativeWindow(_GLFWwindow* window,
bb.dwFlags = DWM_BB_ENABLE | DWM_BB_BLURREGION;
bb.hRgnBlur = region;
bb.fEnable = TRUE;
transparent = GLFW_TRUE;
if (SUCCEEDED(DwmEnableBlurBehindWindow(window->win32.handle, &bb)))
{
@ -1090,6 +1092,9 @@ static int createNativeWindow(_GLFWwindow* window,
DeleteObject(region);
}
// Need to let the framebuffer hint aware of the composition results.
_glfw.hints.framebuffer.transparent = transparent;
return GLFW_TRUE;
}