diff options
Diffstat (limited to 'src/opengl/gl2paintengineex/qglcustomshaderstage.cpp')
-rw-r--r-- | src/opengl/gl2paintengineex/qglcustomshaderstage.cpp | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/src/opengl/gl2paintengineex/qglcustomshaderstage.cpp b/src/opengl/gl2paintengineex/qglcustomshaderstage.cpp new file mode 100644 index 0000000000..85f1ff257b --- /dev/null +++ b/src/opengl/gl2paintengineex/qglcustomshaderstage.cpp @@ -0,0 +1,138 @@ +/**************************************************************************** +** +** 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. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qglcustomshaderstage_p.h" +#include "qglengineshadermanager_p.h" +#include "qpaintengineex_opengl2_p.h" +#include <private/qpainter_p.h> + +QT_BEGIN_NAMESPACE + +class QGLCustomShaderStagePrivate +{ +public: + QGLCustomShaderStagePrivate() : + m_manager(0) {} + + QPointer<QGLEngineShaderManager> m_manager; + QByteArray m_source; +}; + + + + +QGLCustomShaderStage::QGLCustomShaderStage() + : d_ptr(new QGLCustomShaderStagePrivate) +{ +} + +QGLCustomShaderStage::~QGLCustomShaderStage() +{ + Q_D(QGLCustomShaderStage); + if (d->m_manager) { + d->m_manager->removeCustomStage(); + d->m_manager->sharedShaders->cleanupCustomStage(this); + } +} + +void QGLCustomShaderStage::setUniformsDirty() +{ + Q_D(QGLCustomShaderStage); + if (d->m_manager) + d->m_manager->setDirty(); // ### Probably a bit overkill! +} + +bool QGLCustomShaderStage::setOnPainter(QPainter* p) +{ + Q_D(QGLCustomShaderStage); + if (p->paintEngine()->type() != QPaintEngine::OpenGL2) { + qWarning("QGLCustomShaderStage::setOnPainter() - paint engine not OpenGL2"); + return false; + } + if (d->m_manager) + qWarning("Custom shader is already set on a painter"); + + QGL2PaintEngineEx *engine = static_cast<QGL2PaintEngineEx*>(p->paintEngine()); + d->m_manager = QGL2PaintEngineExPrivate::shaderManagerForEngine(engine); + Q_ASSERT(d->m_manager); + + d->m_manager->setCustomStage(this); + return true; +} + +void QGLCustomShaderStage::removeFromPainter(QPainter* p) +{ + Q_D(QGLCustomShaderStage); + if (p->paintEngine()->type() != QPaintEngine::OpenGL2) + return; + + QGL2PaintEngineEx *engine = static_cast<QGL2PaintEngineEx*>(p->paintEngine()); + d->m_manager = QGL2PaintEngineExPrivate::shaderManagerForEngine(engine); + Q_ASSERT(d->m_manager); + + // Just set the stage to null, don't call removeCustomStage(). + // This should leave the program in a compiled/linked state + // if the next custom shader stage is this one again. + d->m_manager->setCustomStage(0); + d->m_manager = 0; +} + +QByteArray QGLCustomShaderStage::source() const +{ + Q_D(const QGLCustomShaderStage); + return d->m_source; +} + +// Called by the shader manager if another custom shader is attached or +// the manager is deleted +void QGLCustomShaderStage::setInactive() +{ + Q_D(QGLCustomShaderStage); + d->m_manager = 0; +} + +void QGLCustomShaderStage::setSource(const QByteArray& s) +{ + Q_D(QGLCustomShaderStage); + d->m_source = s; +} + +QT_END_NAMESPACE |