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Fix build and require SDL 2.0.15 to hook

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This commit is contained in:
Cameron Gutman 2021-02-06 17:07:21 -06:00
parent a88a3c9ea3
commit 2c2a73e320
2 changed files with 11 additions and 0 deletions
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1
app/app.pro
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@ -254,6 +254,7 @@ libdrm {
linux { linux {
message(Master hooks enabled) message(Master hooks enabled)
SOURCES += masterhook.c SOURCES += masterhook.c
LIBS += -ldl
} }
} }
config_EGL { config_EGL {

10
app/masterhook.c
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@ -20,6 +20,14 @@
#include <xf86drm.h> #include <xf86drm.h>
#include <xf86drmMode.h> #include <xf86drmMode.h>
// We require SDL 2.0.15+ to hook because it supports sharing
// the DRM FD with our code. This avoids having multiple DRM FDs
// in flight at the same time which would significantly complicate
// the logic here because we'd need to figure out exactly which FD
// should be the master at any given time. With the position of our
// hooks, that is definitely not trivial.
#if SDL_VERSION_ATLEAST(2, 0, 15)
// Qt's DRM master FD grabbed by our hook // Qt's DRM master FD grabbed by our hook
int g_QtDrmMasterFd = -1; int g_QtDrmMasterFd = -1;
struct stat64 g_DrmMasterStat; struct stat64 g_DrmMasterStat;
@ -134,3 +142,5 @@ int close(int fd)
} }
return ret; return ret;
} }
#endif