diff options
| -rw-r--r-- | src/platformsupport/eglconvenience/qeglplatformcontext.cpp | 17 | ||||
| -rw-r--r-- | src/platformsupport/eglconvenience/qeglplatformcontext_p.h | 1 |
2 files changed, 16 insertions, 2 deletions
diff --git a/src/platformsupport/eglconvenience/qeglplatformcontext.cpp b/src/platformsupport/eglconvenience/qeglplatformcontext.cpp index 6d9f9e4ae0..8929a038e0 100644 --- a/src/platformsupport/eglconvenience/qeglplatformcontext.cpp +++ b/src/platformsupport/eglconvenience/qeglplatformcontext.cpp @@ -154,6 +154,7 @@ void QEGLPlatformContext::init(const QSurfaceFormat &format, QPlatformOpenGLCont } } contextAttrs.append(EGL_NONE); + m_contextAttrs = contextAttrs; switch (m_format.renderableType()) { case QSurfaceFormat::OpenVG: @@ -243,6 +244,8 @@ void QEGLPlatformContext::initialize() updateFormatFromGL(); } +// Base implementation for pbuffers. Subclasses will handle the specialized cases for +// platforms without pbuffers. EGLSurface QEGLPlatformContext::createTemporaryOffscreenSurface() { // Make the context current to ensure the GL version query works. This needs a surface too. @@ -282,10 +285,18 @@ void QEGLPlatformContext::updateFormatFromGL() // avoid creating an extra pbuffer surface which is apparently troublesome with some // drivers (Mesa) when certain attributes are present (multisampling). EGLSurface tempSurface = EGL_NO_SURFACE; + EGLContext tempContext = EGL_NO_CONTEXT; if (!q_hasEglExtension(m_eglDisplay, "EGL_KHR_surfaceless_context")) tempSurface = createTemporaryOffscreenSurface(); - if (eglMakeCurrent(m_eglDisplay, tempSurface, tempSurface, m_eglContext)) { + EGLBoolean ok = eglMakeCurrent(m_eglDisplay, tempSurface, tempSurface, m_eglContext); + if (!ok) { + EGLConfig config = q_configFromGLFormat(m_eglDisplay, m_format, false, EGL_PBUFFER_BIT); + tempContext = eglCreateContext(m_eglDisplay, config, 0, m_contextAttrs.constData()); + if (tempContext != EGL_NO_CONTEXT) + ok = eglMakeCurrent(m_eglDisplay, tempSurface, tempSurface, tempContext); + } + if (ok) { if (m_format.renderableType() == QSurfaceFormat::OpenGL || m_format.renderableType() == QSurfaceFormat::OpenGLES) { const GLubyte *s = glGetString(GL_VERSION); @@ -323,10 +334,12 @@ void QEGLPlatformContext::updateFormatFromGL() } eglMakeCurrent(prevDisplay, prevSurfaceDraw, prevSurfaceRead, prevContext); } else { - qWarning("QEGLPlatformContext: Failed to make temporary surface current, format not updated"); + qWarning("QEGLPlatformContext: Failed to make temporary surface current, format not updated (%x)", eglGetError()); } if (tempSurface != EGL_NO_SURFACE) destroyTemporaryOffscreenSurface(tempSurface); + if (tempContext != EGL_NO_CONTEXT) + eglDestroyContext(m_eglDisplay, tempContext); #endif // QT_NO_OPENGL } diff --git a/src/platformsupport/eglconvenience/qeglplatformcontext_p.h b/src/platformsupport/eglconvenience/qeglplatformcontext_p.h index 50c264e1dc..2ab7ad28d0 100644 --- a/src/platformsupport/eglconvenience/qeglplatformcontext_p.h +++ b/src/platformsupport/eglconvenience/qeglplatformcontext_p.h @@ -94,6 +94,7 @@ private: bool m_swapIntervalEnvChecked; int m_swapIntervalFromEnv; bool m_ownsContext; + QVector<EGLint> m_contextAttrs; }; QT_END_NAMESPACE |