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| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
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| ** |
| ** This file is part of the QtOpenGL module of the Qt Toolkit. |
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| ****************************************************************************/ |
| |
| #ifndef QGLFRAMEBUFFEROBJECT_P_H |
| #define QGLFRAMEBUFFEROBJECT_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 <qglframebufferobject.h> |
| #include <private/qglpaintdevice_p.h> |
| #include <private/qgl_p.h> |
| #include <private/qopenglextensions_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QGLFramebufferObjectFormatPrivate |
| { |
| public: |
| QGLFramebufferObjectFormatPrivate() |
| : ref(1), |
| samples(0), |
| attachment(QGLFramebufferObject::NoAttachment), |
| target(GL_TEXTURE_2D), |
| mipmap(false) |
| { |
| #ifndef QT_OPENGL_ES_2 |
| QOpenGLContext *ctx = QOpenGLContext::currentContext(); |
| const bool isES = ctx ? ctx->isOpenGLES() : QOpenGLContext::openGLModuleType() != QOpenGLContext::LibGL; |
| internal_format = isES ? GL_RGBA : GL_RGBA8; |
| #else |
| internal_format = GL_RGBA; |
| #endif |
| } |
| QGLFramebufferObjectFormatPrivate |
| (const QGLFramebufferObjectFormatPrivate *other) |
| : ref(1), |
| samples(other->samples), |
| attachment(other->attachment), |
| target(other->target), |
| internal_format(other->internal_format), |
| mipmap(other->mipmap) |
| { |
| } |
| bool equals(const QGLFramebufferObjectFormatPrivate *other) |
| { |
| return samples == other->samples && |
| attachment == other->attachment && |
| target == other->target && |
| internal_format == other->internal_format && |
| mipmap == other->mipmap; |
| } |
| |
| QAtomicInt ref; |
| int samples; |
| QGLFramebufferObject::Attachment attachment; |
| GLenum target; |
| GLenum internal_format; |
| uint mipmap : 1; |
| }; |
| |
| class QGLFBOGLPaintDevice : public QGLPaintDevice |
| { |
| public: |
| virtual QPaintEngine* paintEngine() const override {return fbo->paintEngine();} |
| virtual QSize size() const override {return fbo->size();} |
| virtual QGLContext* context() const override; |
| virtual QGLFormat format() const override {return fboFormat;} |
| virtual bool alphaRequested() const override { return reqAlpha; } |
| |
| void setFBO(QGLFramebufferObject* f, |
| QGLFramebufferObject::Attachment attachment); |
| |
| private: |
| QGLFramebufferObject* fbo; |
| QGLFormat fboFormat; |
| bool reqAlpha; |
| }; |
| |
| class QGLFramebufferObjectPrivate |
| { |
| public: |
| QGLFramebufferObjectPrivate() : fbo_guard(nullptr), texture_guard(nullptr), depth_buffer_guard(nullptr) |
| , stencil_buffer_guard(nullptr), color_buffer_guard(nullptr) |
| , valid(false), engine(nullptr) {} |
| ~QGLFramebufferObjectPrivate() {} |
| |
| void init(QGLFramebufferObject *q, const QSize& sz, |
| QGLFramebufferObject::Attachment attachment, |
| GLenum internal_format, GLenum texture_target, |
| GLint samples = 0, bool mipmap = false); |
| bool checkFramebufferStatus() const; |
| QGLSharedResourceGuardBase *fbo_guard; |
| QGLSharedResourceGuardBase *texture_guard; |
| QGLSharedResourceGuardBase *depth_buffer_guard; |
| QGLSharedResourceGuardBase *stencil_buffer_guard; |
| QGLSharedResourceGuardBase *color_buffer_guard; |
| GLenum target; |
| QSize size; |
| QGLFramebufferObjectFormat format; |
| uint valid : 1; |
| QGLFramebufferObject::Attachment fbo_attachment; |
| mutable QPaintEngine *engine; |
| QGLFBOGLPaintDevice glDevice; |
| QOpenGLExtensions funcs; |
| |
| inline GLuint fbo() const { return fbo_guard ? fbo_guard->id() : 0; } |
| }; |
| |
| |
| QT_END_NAMESPACE |
| |
| #endif // QGLFRAMEBUFFEROBJECT_P_H |