diff options
Diffstat (limited to 'src/gui/opengl/platform/egl/qeglplatformcontext_p.h')
-rw-r--r-- | src/gui/opengl/platform/egl/qeglplatformcontext_p.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/src/gui/opengl/platform/egl/qeglplatformcontext_p.h b/src/gui/opengl/platform/egl/qeglplatformcontext_p.h new file mode 100644 index 0000000000..b1e9c4b4c2 --- /dev/null +++ b/src/gui/opengl/platform/egl/qeglplatformcontext_p.h @@ -0,0 +1,115 @@ +// Copyright (C) 2020 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only + +#ifndef QEGLPLATFORMCONTEXT_H +#define QEGLPLATFORMCONTEXT_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <QtCore/qtextstream.h> +#include <qpa/qplatformwindow.h> +#include <qpa/qplatformopenglcontext.h> +#include <QtCore/qvariant.h> +#include <QtGui/private/qt_egl_p.h> +#include <QtGui/private/qopenglcontext_p.h> + +QT_BEGIN_NAMESPACE + +class Q_GUI_EXPORT QEGLPlatformContext : public QPlatformOpenGLContext, + public QNativeInterface::QEGLContext +{ +public: + enum Flag { + NoSurfaceless = 0x01 + }; + Q_DECLARE_FLAGS(Flags, Flag) + + QEGLPlatformContext(const QSurfaceFormat &format, QPlatformOpenGLContext *share, EGLDisplay display, + EGLConfig *config = nullptr, Flags flags = { }); + + template <typename T> + static QOpenGLContext *createFrom(EGLContext context, EGLDisplay contextDisplay, + EGLDisplay platformDisplay, QOpenGLContext *shareContext) + { + if (!context) + return nullptr; + + // A context belonging to a given EGLDisplay cannot be used with another one + if (contextDisplay != platformDisplay) { + qWarning("QEGLPlatformContext: Cannot adopt context from different display"); + return nullptr; + } + + QPlatformOpenGLContext *shareHandle = shareContext ? shareContext->handle() : nullptr; + + auto *resultingContext = new QOpenGLContext; + auto *contextPrivate = QOpenGLContextPrivate::get(resultingContext); + auto *platformContext = new T; + platformContext->adopt(context, contextDisplay, shareHandle); + contextPrivate->adopt(platformContext); + return resultingContext; + } + + ~QEGLPlatformContext(); + + void initialize() override; + bool makeCurrent(QPlatformSurface *surface) override; + void doneCurrent() override; + void swapBuffers(QPlatformSurface *surface) override; + QFunctionPointer getProcAddress(const char *procName) override; + + QSurfaceFormat format() const override; + bool isSharing() const override { return m_shareContext != EGL_NO_CONTEXT; } + bool isValid() const override { return m_eglContext != EGL_NO_CONTEXT && !m_markedInvalid; } + + EGLContext nativeContext() const override { return eglContext(); } + EGLConfig config() const override { return eglConfig(); } + EGLDisplay display() const override { return eglDisplay(); } + + virtual void invalidateContext() override { m_markedInvalid = true; } + + EGLContext eglContext() const; + EGLDisplay eglDisplay() const; + EGLConfig eglConfig() const; + +protected: + QEGLPlatformContext() {} // For adoption + virtual EGLSurface eglSurfaceForPlatformSurface(QPlatformSurface *surface) = 0; + virtual EGLSurface createTemporaryOffscreenSurface(); + virtual void destroyTemporaryOffscreenSurface(EGLSurface surface); + virtual void runGLChecks(); + +private: + void adopt(EGLContext context, EGLDisplay display, QPlatformOpenGLContext *shareContext); + void updateFormatFromGL(); + + EGLContext m_eglContext; + EGLContext m_shareContext; + EGLDisplay m_eglDisplay; + EGLConfig m_eglConfig; + QSurfaceFormat m_format; + EGLenum m_api; + int m_swapInterval = -1; + bool m_swapIntervalEnvChecked = false; + int m_swapIntervalFromEnv = -1; + Flags m_flags; + bool m_ownsContext = false; + QList<EGLint> m_contextAttrs; + + bool m_markedInvalid = false; +}; + +Q_DECLARE_OPERATORS_FOR_FLAGS(QEGLPlatformContext::Flags) + +QT_END_NAMESPACE + +#endif //QEGLPLATFORMCONTEXT_H |