diff options
| author | Laszlo Agocs <laszlo.agocs@theqtcompany.com> | 2016-01-20 15:50:55 +0100 |
|---|---|---|
| committer | Laszlo Agocs <laszlo.agocs@theqtcompany.com> | 2016-01-21 09:16:26 +0000 |
| commit | 7edd488a5f1d5ac2e21ce08177a0d733185e38df (patch) | |
| tree | a99b09bbb6436b3eb67e2fd3f902afe8b4c40716 /src/plugins/platforms | |
| parent | 205987750d51a446118f50b9ed583d40a565f445 (diff) | |
eglfs: Detect llvmpipe and show a warning
Do ourselves and our users a favor by pointing out why Qt (Quick)
apps perform horribly on commonly used distros on the RPi. Using
a software rasterizer on such boards is not going to cut it.
Task-number: QTBUG-50533
Change-Id: I087f502ddb9c6bdde84343e6abd85c87cdc474f0
Reviewed-by: Andy Nichols <andy.nichols@theqtcompany.com>
Diffstat (limited to 'src/plugins/platforms')
| -rw-r--r-- | src/plugins/platforms/eglfs/qeglfscontext.cpp | 10 | ||||
| -rw-r--r-- | src/plugins/platforms/eglfs/qeglfscontext.h | 1 |
2 files changed, 11 insertions, 0 deletions
diff --git a/src/plugins/platforms/eglfs/qeglfscontext.cpp b/src/plugins/platforms/eglfs/qeglfscontext.cpp index 6fcdae7ad2..db35338423 100644 --- a/src/plugins/platforms/eglfs/qeglfscontext.cpp +++ b/src/plugins/platforms/eglfs/qeglfscontext.cpp @@ -85,6 +85,16 @@ void QEglFSContext::destroyTemporaryOffscreenSurface(EGLSurface surface) } } +void QEglFSContext::runGLChecks() +{ + // Note that even though there is an EGL context current here, + // QOpenGLContext and QOpenGLFunctions are not yet usable at this stage. + const char *renderer = reinterpret_cast<const char *>(glGetString(GL_RENDERER)); + // Be nice and warn about a common source of confusion. + if (renderer && strstr(renderer, "llvmpipe")) + qWarning("Running on a software rasterizer (LLVMpipe), expect limited performance."); +} + void QEglFSContext::swapBuffers(QPlatformSurface *surface) { // draw the cursor diff --git a/src/plugins/platforms/eglfs/qeglfscontext.h b/src/plugins/platforms/eglfs/qeglfscontext.h index 612960dc24..906d11b3d1 100644 --- a/src/plugins/platforms/eglfs/qeglfscontext.h +++ b/src/plugins/platforms/eglfs/qeglfscontext.h @@ -48,6 +48,7 @@ public: EGLSurface eglSurfaceForPlatformSurface(QPlatformSurface *surface) Q_DECL_OVERRIDE; EGLSurface createTemporaryOffscreenSurface() Q_DECL_OVERRIDE; void destroyTemporaryOffscreenSurface(EGLSurface surface) Q_DECL_OVERRIDE; + void runGLChecks() Q_DECL_OVERRIDE; void swapBuffers(QPlatformSurface *surface) Q_DECL_OVERRIDE; private: |