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| |
| #ifndef QSGDEPTHSTENCILBUFFER_P_H |
| #define QSGDEPTHSTENCILBUFFER_P_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/qsize.h> |
| #include <QtGui/private/qopenglcontext_p.h> |
| #include <QtGui/private/qopenglextensions_p.h> |
| #include <QtCore/qsharedpointer.h> |
| #include <QtCore/qhash.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QSGDepthStencilBufferManager; |
| |
| class QSGDepthStencilBuffer |
| { |
| public: |
| enum Attachment |
| { |
| NoAttachment = 0x00, |
| DepthAttachment = 0x01, |
| StencilAttachment = 0x02 |
| }; |
| Q_DECLARE_FLAGS(Attachments, Attachment) |
| |
| struct Format |
| { |
| QSize size; |
| int samples; |
| QSGDepthStencilBuffer::Attachments attachments; |
| bool operator == (const Format &other) const; |
| }; |
| |
| QSGDepthStencilBuffer(QOpenGLContext *context, const Format &format); |
| virtual ~QSGDepthStencilBuffer(); |
| |
| // Attaches this depth stencil buffer to the currently bound FBO. |
| void attach(); |
| // Detaches this depth stencil buffer from the currently bound FBO. |
| void detach(); |
| |
| QSize size() const { return m_format.size; } |
| int samples() const { return m_format.samples; } |
| Attachments attachments() const { return m_format.attachments; } |
| |
| protected: |
| virtual void free() = 0; |
| |
| QOpenGLExtensions m_functions; |
| QSGDepthStencilBufferManager *m_manager; |
| Format m_format; |
| GLuint m_depthBuffer; |
| GLuint m_stencilBuffer; |
| |
| friend class QSGDepthStencilBufferManager; |
| }; |
| |
| Q_DECLARE_OPERATORS_FOR_FLAGS(QSGDepthStencilBuffer::Attachments) |
| |
| inline bool QSGDepthStencilBuffer::Format::operator == (const Format &other) const |
| { |
| return size == other.size && samples == other.samples && attachments == other.attachments; |
| } |
| |
| |
| class QSGDefaultDepthStencilBuffer : public QSGDepthStencilBuffer |
| { |
| public: |
| QSGDefaultDepthStencilBuffer(QOpenGLContext *context, const Format &format); |
| virtual ~QSGDefaultDepthStencilBuffer(); |
| |
| protected: |
| void free() override; |
| }; |
| |
| |
| class QSGDepthStencilBufferManager |
| { |
| public: |
| QSGDepthStencilBufferManager(QOpenGLContext *ctx) : m_context(ctx) { } |
| ~QSGDepthStencilBufferManager(); |
| QOpenGLContext *context() const { return m_context; } |
| QSharedPointer<QSGDepthStencilBuffer> bufferForFormat(const QSGDepthStencilBuffer::Format &fmt); |
| void insertBuffer(const QSharedPointer<QSGDepthStencilBuffer> &buffer); |
| |
| private: |
| typedef QHash<QSGDepthStencilBuffer::Format, QWeakPointer<QSGDepthStencilBuffer> > Hash; |
| QOpenGLContext *m_context; |
| Hash m_buffers; |
| |
| friend class QSGDepthStencilBuffer; |
| }; |
| |
| extern uint qHash(const QSGDepthStencilBuffer::Format &format); |
| |
| QT_END_NAMESPACE |
| |
| #endif |