diff options
Diffstat (limited to 'src/opengl/qgl_egl.cpp')
| -rw-r--r-- | src/opengl/qgl_egl.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/opengl/qgl_egl.cpp b/src/opengl/qgl_egl.cpp index 44e8ae9..0a19531 100644 --- a/src/opengl/qgl_egl.cpp +++ b/src/opengl/qgl_egl.cpp @@ -190,7 +190,7 @@ void QGLContext::makeCurrent() if (!d->workaroundsCached) { d->workaroundsCached = true; const char *renderer = reinterpret_cast<const char *>(glGetString(GL_RENDERER)); - if (strstr(renderer, "SGX") || strstr(renderer, "MBX")) { + if (renderer && (strstr(renderer, "SGX") || strstr(renderer, "MBX"))) { // PowerVR MBX/SGX chips needs to clear all buffers when starting to render // a new frame, otherwise there will be a performance penalty to pay for // each frame. @@ -200,7 +200,8 @@ void QGLContext::makeCurrent() // bug which prevents glCopyTexSubImage2D() to work with a POT // or GL_ALPHA texture bound to an FBO. The only way to // identify that driver is to check the EGL version number for it. - if (strstr(eglQueryString(d->eglContext->display(), EGL_VERSION), "1.3")) + const char *egl_version = eglQueryString(d->eglContext->display(), EGL_VERSION); + if (egl_version && strstr(egl_version, "1.3")) d->workaround_brokenFBOReadBack = true; } } |