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Diffstat (limited to 'src/opengl/qglframebufferobject_p.h')
| -rw-r--r-- | src/opengl/qglframebufferobject_p.h | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/src/opengl/qglframebufferobject_p.h b/src/opengl/qglframebufferobject_p.h new file mode 100644 index 0000000000..4d194693ea --- /dev/null +++ b/src/opengl/qglframebufferobject_p.h @@ -0,0 +1,161 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtOpenGL module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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 for the convenience +// of the QLibrary class. This header file may change from +// version to version without notice, or even be removed. +// +// We mean it. +// + +QT_BEGIN_NAMESPACE + +QT_BEGIN_INCLUDE_NAMESPACE + +#include <qglframebufferobject.h> +#include <private/qglpaintdevice_p.h> +#include <private/qgl_p.h> + +QT_END_INCLUDE_NAMESPACE + +#ifndef QT_OPENGL_ES +#define DEFAULT_FORMAT GL_RGBA8 +#else +#define DEFAULT_FORMAT GL_RGBA +#endif + +class QGLFramebufferObjectFormatPrivate +{ +public: + QGLFramebufferObjectFormatPrivate() + : ref(1), + samples(0), + attachment(QGLFramebufferObject::NoAttachment), + target(GL_TEXTURE_2D), + internal_format(DEFAULT_FORMAT), + mipmap(false) + { + } + 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 {return fbo->paintEngine();} + virtual QSize size() const {return fbo->size();} + virtual QGLContext* context() const; + virtual QGLFormat format() const {return fboFormat;} + virtual bool alphaRequested() const { return reqAlpha; } + + void setFBO(QGLFramebufferObject* f, + QGLFramebufferObject::Attachment attachment); + +private: + QGLFramebufferObject* fbo; + QGLFormat fboFormat; + bool wasBound; + bool reqAlpha; +}; + +class QGLFramebufferObjectPrivate +{ +public: + QGLFramebufferObjectPrivate() : fbo_guard(0), texture(0), depth_buffer(0), stencil_buffer(0) + , color_buffer(0), valid(false), engine(0) {} + ~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; + QGLSharedResourceGuard fbo_guard; + GLuint texture; + GLuint depth_buffer; + GLuint stencil_buffer; + GLuint color_buffer; + GLenum target; + QSize size; + QGLFramebufferObjectFormat format; + uint valid : 1; + QGLFramebufferObject::Attachment fbo_attachment; + mutable QPaintEngine *engine; + QGLFBOGLPaintDevice glDevice; + + inline GLuint fbo() const { return fbo_guard.id(); } +}; + + +QT_END_NAMESPACE + +#endif // QGLFRAMEBUFFEROBJECT_P_H |