diff options
Diffstat (limited to 'src/imports')
| -rw-r--r-- | src/imports/imports.pro | 1 | ||||
| -rwxr-xr-x | src/imports/shaders/glfunctions.h | 75 | ||||
| -rw-r--r-- | src/imports/shaders/qmldir | 2 | ||||
| -rw-r--r-- | src/imports/shaders/qmlshadersplugin_plugin.cpp | 55 | ||||
| -rw-r--r-- | src/imports/shaders/qmlshadersplugin_plugin.h | 56 | ||||
| -rw-r--r-- | src/imports/shaders/scenegraph/qsggeometry.cpp | 310 | ||||
| -rw-r--r-- | src/imports/shaders/scenegraph/qsggeometry.h | 234 | ||||
| -rw-r--r-- | src/imports/shaders/shadereffect.cpp | 192 | ||||
| -rw-r--r-- | src/imports/shaders/shadereffect.h | 81 | ||||
| -rw-r--r-- | src/imports/shaders/shadereffectbuffer.cpp | 52 | ||||
| -rw-r--r-- | src/imports/shaders/shadereffectbuffer.h | 62 | ||||
| -rw-r--r-- | src/imports/shaders/shadereffectitem.cpp | 915 | ||||
| -rw-r--r-- | src/imports/shaders/shadereffectitem.h | 152 | ||||
| -rw-r--r-- | src/imports/shaders/shadereffectsource.cpp | 472 | ||||
| -rw-r--r-- | src/imports/shaders/shadereffectsource.h | 158 | ||||
| -rw-r--r-- | src/imports/shaders/shaders.pro | 38 |
16 files changed, 2855 insertions, 0 deletions
diff --git a/src/imports/imports.pro b/src/imports/imports.pro index 5e50b08..c1298e2 100644 --- a/src/imports/imports.pro +++ b/src/imports/imports.pro @@ -1,4 +1,5 @@ TEMPLATE = subdirs SUBDIRS += folderlistmodel particles gestures +contains(QT_CONFIG, opengl): SUBDIRS += shaders diff --git a/src/imports/shaders/glfunctions.h b/src/imports/shaders/glfunctions.h new file mode 100755 index 0000000..8529519 --- /dev/null +++ b/src/imports/shaders/glfunctions.h @@ -0,0 +1,75 @@ +/**************************************************************************** +** +** 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 QML Shaders plugin 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 GLFUNCTIONS_H +#define GLFUNCTIONS_H + +#ifndef QT_OPENGL_ES + +#ifndef Q_WS_MAC +# ifndef APIENTRYP +# ifdef APIENTRY +# define APIENTRYP APIENTRY * +# else +# define APIENTRY +# define APIENTRYP * +# endif +# endif +#else +# define APIENTRY +# define APIENTRYP * +#endif + +#define GL_TEXTURE0 0x84C0 +#define GL_CLAMP_TO_EDGE 0x812F +#define GL_BGRA 0x80E1 + +typedef void (APIENTRYP type_glActiveTexture)(GLenum texture); +typedef void (APIENTRYP type_glGenerateMipmap)(GLenum target); +typedef void (APIENTRYP type_glVertexAttribPointer)(GLuint, GLint, GLenum, GLboolean, GLsizei, const GLvoid *); + +#define glActiveTexture ((type_glActiveTexture)QGLContext::currentContext()->getProcAddress(QLatin1String("glActiveTexture"))) +#define glGenerateMipmap ((type_glGenerateMipmap)QGLContext::currentContext()->getProcAddress(QLatin1String("glGenerateMipmap"))) +#define glVertexAttribPointer ((type_glVertexAttribPointer)QGLContext::currentContext()->getProcAddress(QLatin1String("glVertexAttribPointer"))) + +#endif + +#endif // GLFUNCTIONS_H diff --git a/src/imports/shaders/qmldir b/src/imports/shaders/qmldir new file mode 100644 index 0000000..b2a9de21 --- /dev/null +++ b/src/imports/shaders/qmldir @@ -0,0 +1,2 @@ +plugin qmlshadersplugin + diff --git a/src/imports/shaders/qmlshadersplugin_plugin.cpp b/src/imports/shaders/qmlshadersplugin_plugin.cpp new file mode 100644 index 0000000..c03ef2c --- /dev/null +++ b/src/imports/shaders/qmlshadersplugin_plugin.cpp @@ -0,0 +1,55 @@ +/**************************************************************************** +** +** 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 QML Shaders plugin 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 "qmlshadersplugin_plugin.h" +#include "shadereffectitem.h" +#include "shadereffectsource.h" + +#include <QtDeclarative/qdeclarative.h> + +void qmlshaderspluginPlugin::registerTypes(const char *uri) +{ + qmlRegisterType<ShaderEffectItem>(uri, 1, 0, "ShaderEffectItem"); + qmlRegisterType<ShaderEffectSource>(uri, 1, 0, "ShaderEffectSource"); +} + +Q_EXPORT_PLUGIN2(qmlshadersplugin, qmlshaderspluginPlugin) + diff --git a/src/imports/shaders/qmlshadersplugin_plugin.h b/src/imports/shaders/qmlshadersplugin_plugin.h new file mode 100644 index 0000000..2614a44 --- /dev/null +++ b/src/imports/shaders/qmlshadersplugin_plugin.h @@ -0,0 +1,56 @@ +/**************************************************************************** +** +** 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 QML Shaders plugin 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 QMLSHADERSPLUGIN_PLUGIN_H +#define QMLSHADERSPLUGIN_PLUGIN_H + +#include <QtDeclarative/QDeclarativeExtensionPlugin> + +class qmlshaderspluginPlugin : public QDeclarativeExtensionPlugin +{ + Q_OBJECT + +public: + void registerTypes(const char *uri); +}; + +#endif // QMLSHADERSPLUGIN_PLUGIN_H + diff --git a/src/imports/shaders/scenegraph/qsggeometry.cpp b/src/imports/shaders/scenegraph/qsggeometry.cpp new file mode 100644 index 0000000..05c111a --- /dev/null +++ b/src/imports/shaders/scenegraph/qsggeometry.cpp @@ -0,0 +1,310 @@ +/**************************************************************************** +** +** 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 QML Shaders plugin 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 "qsggeometry.h" + +QT_BEGIN_NAMESPACE + + +/*! + Convenience function which returns attributes to be used for 2D solid + color drawing. + */ + +const QSGGeometry::AttributeSet &QSGGeometry::defaultAttributes_Point2D() +{ + static Attribute data[] = { + { 0, 2, GL_FLOAT } + }; + static AttributeSet attrs = { 1, sizeof(float) * 2, data }; + return attrs; +} + +/*! + Convenience function which returns attributes to be used for textured 2D drawing. + */ + +const QSGGeometry::AttributeSet &QSGGeometry::defaultAttributes_TexturedPoint2D() +{ + static Attribute data[] = { + { 0, 2, GL_FLOAT }, + { 1, 2, GL_FLOAT } + }; + static AttributeSet attrs = { 2, sizeof(float) * 4, data }; + return attrs; +} + +/*! + Convenience function which returns attributes to be used for per vertex colored 2D drawing. + */ + +const QSGGeometry::AttributeSet &QSGGeometry::defaultAttributes_ColoredPoint2D() +{ + static Attribute data[] = { + { 0, 2, GL_FLOAT }, + { 1, 4, GL_UNSIGNED_BYTE } + }; + static AttributeSet attrs = { 2, 2 * sizeof(float) + 4 * sizeof(char), data }; + return attrs; +} + + +/*! + \class QSGGeometry + \brief The QSGGeometry class provides low-level storage for graphics primitives + in the QML Scene Graph. + + The QSGGeometry class provides a few convenience attributes and attribute accessors + by default. The defaultAttributes_Point2D() function returns attributes to be used + in normal solid color rectangles, while the defaultAttributes_TexturedPoint2D function + returns attributes to be used for the common pixmap usecase. + */ + + +/*! + Constructs a geometry object based on \a attributes. + + The object allocate space for \a vertexCount vertices based on the accumulated + size in \a attributes and for \a indexCount. + + Geometry objects are constructed with GL_TRIANGLE_STRIP as default drawing mode. + + The attribute structure is assumed to be POD and the geometry object + assumes this will not go away. There is no memory management involved. + */ + +QSGGeometry::QSGGeometry(const QSGGeometry::AttributeSet &attributes, + int vertexCount, + int indexCount, + int indexType) + : m_drawing_mode(GL_TRIANGLE_STRIP) + , m_vertex_count(0) + , m_index_count(0) + , m_index_type(indexType) + , m_attributes(attributes) + , m_data(0) + , m_index_data_offset(-1) + , m_owns_data(false) +{ + Q_ASSERT(m_attributes.count > 0); + Q_ASSERT(m_attributes.stride > 0); + + // Because allocate reads m_vertex_count, m_index_count and m_owns_data, these + // need to be set before calling allocate... + allocate(vertexCount, indexCount); +} + +QSGGeometry::~QSGGeometry() +{ + if (m_owns_data) + qFree(m_data); +} + +/*! + \fn int QSGGeometry::vertexCount() const + + Returns the number of vertices in this geometry object. + */ + +/*! + \fn int QSGGeometry::indexCount() const + + Returns the number of indices in this geometry object. + */ + + + +/*! + \fn void *QSGGeometry::vertexData() + + Returns a pointer to the raw vertex data of this geometry object. + + \sa vertexDataAsPoint2D(), vertexDataAsTexturedPoint2D + */ + +/*! + \fn const void *QSGGeometry::vertexData() const + + Returns a pointer to the raw vertex data of this geometry object. + + \sa vertexDataAsPoint2D(), vertexDataAsTexturedPoint2D + */ + +/*! + Returns a pointer to the raw index data of this geometry object. + + \sa indexDataAsUShort(), indexDataAsUInt() + */ +void *QSGGeometry::indexData() +{ + return m_index_data_offset < 0 + ? 0 + : ((char *) m_data + m_index_data_offset); +} + +/*! + Returns a pointer to the raw index data of this geometry object. + + \sa indexDataAsUShort(), indexDataAsUInt() + */ +const void *QSGGeometry::indexData() const +{ + return m_index_data_offset < 0 + ? 0 + : ((char *) m_data + m_index_data_offset); +} + +/*! + Sets the drawing mode to be used for this geometry. + + The default value is GL_TRIANGLE_STRIP. + */ +void QSGGeometry::setDrawingMode(GLenum mode) +{ + m_drawing_mode = mode; +} + +/*! + \fn int QSGGeometry::drawingMode() const + + Returns the drawing mode of this geometry. + + The default value is GL_TRIANGLE_STRIP. + */ + +/*! + \fn int QSGGeometry::indexType() const + + Returns the primitive type used for indices in this + geometry object. + */ + + +/*! + Resizes the vertex and index data of this geometry object to fit \a vertexCount + vertices and \a indexCount indices. + + Vertex and index data will be invalidated after this call and the caller must + */ +void QSGGeometry::allocate(int vertexCount, int indexCount) +{ + if (vertexCount == m_vertex_count && indexCount == m_index_count) + return; + + m_vertex_count = vertexCount; + m_index_count = indexCount; + + bool canUsePrealloc = m_index_count <= 0; + int vertexByteSize = m_attributes.stride * m_vertex_count; + + if (m_owns_data) + qFree(m_data); + + if (canUsePrealloc && vertexByteSize <= (int) sizeof(m_prealloc)) { + m_data = (void *) &m_prealloc[0]; + m_index_data_offset = -1; + m_owns_data = false; + } else { + Q_ASSERT(m_index_type == GL_UNSIGNED_INT || m_index_type == GL_UNSIGNED_SHORT); + int indexByteSize = indexCount * (m_index_type == GL_UNSIGNED_SHORT ? sizeof(quint16) : sizeof(quint32)); + m_data = (void *) qMalloc(vertexByteSize + indexByteSize); + m_index_data_offset = vertexByteSize; + m_owns_data = true; + } + +} + +/*! + Updates the geometry \a g with the coordinates in \a rect. + + The function assumes the geometry object contains a single triangle strip + of QSGGeometry::Point2D vertices + */ +void QSGGeometry::updateRectGeometry(QSGGeometry *g, const QRectF &rect) +{ + Point2D *v = g->vertexDataAsPoint2D(); + v[0].x = rect.left(); + v[0].y = rect.top(); + + v[1].x = rect.right(); + v[1].y = rect.top(); + + v[2].x = rect.left(); + v[2].y = rect.bottom(); + + v[3].x = rect.right(); + v[3].y = rect.bottom(); +} + +/*! + Updates the geometry \a g with the coordinates in \a rect and texture + coordinates from \a textureRect. + + \a textureRect should be in normalized coordinates. + + \a g is assumed to be a triangle strip of four vertices of type + QSGGeometry::TexturedPoint2D. + */ +void QSGGeometry::updateTexturedRectGeometry(QSGGeometry *g, const QRectF &rect, const QRectF &textureRect) +{ + TexturedPoint2D *v = g->vertexDataAsTexturedPoint2D(); + v[0].x = rect.left(); + v[0].y = rect.top(); + v[0].tx = textureRect.left(); + v[0].ty = textureRect.top(); + + v[1].x = rect.right(); + v[1].y = rect.top(); + v[1].tx = textureRect.right(); + v[1].ty = textureRect.top(); + + v[2].x = rect.left(); + v[2].y = rect.bottom(); + v[2].tx = textureRect.left(); + v[2].ty = textureRect.bottom(); + + v[3].x = rect.right(); + v[3].y = rect.bottom(); + v[3].tx = textureRect.right(); + v[3].ty = textureRect.bottom(); +} + +QT_END_NAMESPACE diff --git a/src/imports/shaders/scenegraph/qsggeometry.h b/src/imports/shaders/scenegraph/qsggeometry.h new file mode 100644 index 0000000..b6663f8 --- /dev/null +++ b/src/imports/shaders/scenegraph/qsggeometry.h @@ -0,0 +1,234 @@ +/**************************************************************************** +** +** 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 QML Shaders plugin 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 QSGGEOMETRY_H +#define QSGGEOMETRY_H + +#include <QtOpenGL/qgl.h> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +class QSGGeometry +{ +public: + struct Attribute + { + int position; + int tupleSize; + int type; + }; + + struct AttributeSet { + int count; + int stride; + const Attribute *attributes; + }; + + struct Point2D { float x, y; }; + struct TexturedPoint2D { float x, y; float tx, ty; }; + struct ColoredPoint2D { float x, y; unsigned char r, g, b, a; }; + + static const AttributeSet &defaultAttributes_Point2D(); + static const AttributeSet &defaultAttributes_TexturedPoint2D(); + static const AttributeSet &defaultAttributes_ColoredPoint2D(); + + QSGGeometry(const QSGGeometry::AttributeSet &attribs, + int vertexCount, + int indexCount = 0, + int indexType = GL_UNSIGNED_SHORT); + ~QSGGeometry(); + + void setDrawingMode(GLenum mode); + inline GLenum drawingMode() const { return m_drawing_mode; } + + void allocate(int vertexCount, int indexCount = 0); + + int vertexCount() const { return m_vertex_count; } + + void *vertexData() { return m_data; } + inline Point2D *vertexDataAsPoint2D(); + inline TexturedPoint2D *vertexDataAsTexturedPoint2D(); + inline ColoredPoint2D *vertexDataAsColoredPoint2D(); + + inline const void *vertexData() const { return m_data; } + inline const Point2D *vertexDataAsPoint2D() const; + inline const TexturedPoint2D *vertexDataAsTexturedPoint2D() const; + inline const ColoredPoint2D *vertexDataAsColoredPoint2D() const; + + inline int indexType() const { return m_index_type; } + + int indexCount() const { return m_index_count; } + + void *indexData(); + inline uint *indexDataAsUInt(); + inline quint16 *indexDataAsUShort(); + + const void *indexData() const; + inline const uint *indexDataAsUInt() const; + inline const quint16 *indexDataAsUShort() const; + + inline int attributeCount() const { return m_attributes.count; } + inline const Attribute *attributes() const { return m_attributes.attributes; } + inline int stride() const { return m_attributes.stride; } + + static void updateRectGeometry(QSGGeometry *g, const QRectF &rect); + static void updateTexturedRectGeometry(QSGGeometry *g, const QRectF &rect, const QRectF &sourceRect); + +private: + int m_drawing_mode; + int m_vertex_count; + int m_index_count; + int m_index_type; + const AttributeSet &m_attributes; + void *m_data; + int m_index_data_offset; + + void *m_reserved_pointer; + + uint m_owns_data : 1; + uint m_reserved_bits : 31; + + float m_prealloc[16]; +}; + +inline uint *QSGGeometry::indexDataAsUInt() +{ + Q_ASSERT(m_index_type == GL_UNSIGNED_INT); + return (uint *) indexData(); +} + +inline quint16 *QSGGeometry::indexDataAsUShort() +{ + Q_ASSERT(m_index_type == GL_UNSIGNED_SHORT); + return (quint16 *) indexData(); +} + +inline const uint *QSGGeometry::indexDataAsUInt() const +{ + Q_ASSERT(m_index_type == GL_UNSIGNED_INT); + return (uint *) indexData(); +} + +inline const quint16 *QSGGeometry::indexDataAsUShort() const +{ + Q_ASSERT(m_index_type == GL_UNSIGNED_SHORT); + return (quint16 *) indexData(); +} + +inline QSGGeometry::Point2D *QSGGeometry::vertexDataAsPoint2D() +{ + Q_ASSERT(m_attributes.count == 1); + Q_ASSERT(m_attributes.stride == 2 * sizeof(float)); + Q_ASSERT(m_attributes.attributes[0].tupleSize == 2); + Q_ASSERT(m_attributes.attributes[0].type == GL_FLOAT); + Q_ASSERT(m_attributes.attributes[0].position == 0); + return (Point2D *) m_data; +} + +inline QSGGeometry::TexturedPoint2D *QSGGeometry::vertexDataAsTexturedPoint2D() +{ + Q_ASSERT(m_attributes.count == 2); + Q_ASSERT(m_attributes.stride == 4 * sizeof(float)); + Q_ASSERT(m_attributes.attributes[0].position == 0); + Q_ASSERT(m_attributes.attributes[0].tupleSize == 2); + Q_ASSERT(m_attributes.attributes[0].type == GL_FLOAT); + Q_ASSERT(m_attributes.attributes[1].position == 1); + Q_ASSERT(m_attributes.attributes[1].tupleSize == 2); + Q_ASSERT(m_attributes.attributes[1].type == GL_FLOAT); + return (TexturedPoint2D *) m_data; +} + +inline QSGGeometry::ColoredPoint2D *QSGGeometry::vertexDataAsColoredPoint2D() +{ + Q_ASSERT(m_attributes.count == 2); + Q_ASSERT(m_attributes.stride == 2 * sizeof(float) + 4 * sizeof(char)); + Q_ASSERT(m_attributes.attributes[0].position == 0); + Q_ASSERT(m_attributes.attributes[0].tupleSize == 2); + Q_ASSERT(m_attributes.attributes[0].type == GL_FLOAT); + Q_ASSERT(m_attributes.attributes[1].position == 1); + Q_ASSERT(m_attributes.attributes[1].tupleSize == 4); + Q_ASSERT(m_attributes.attributes[1].type == GL_UNSIGNED_BYTE); + return (ColoredPoint2D *) m_data; +} + +inline const QSGGeometry::Point2D *QSGGeometry::vertexDataAsPoint2D() const +{ + Q_ASSERT(m_attributes.count == 1); + Q_ASSERT(m_attributes.stride == 2 * sizeof(float)); + Q_ASSERT(m_attributes.attributes[0].tupleSize == 2); + Q_ASSERT(m_attributes.attributes[0].type == GL_FLOAT); + Q_ASSERT(m_attributes.attributes[0].position == 0); + return (const Point2D *) m_data; +} + +inline const QSGGeometry::TexturedPoint2D *QSGGeometry::vertexDataAsTexturedPoint2D() const +{ + Q_ASSERT(m_attributes.count == 2); + Q_ASSERT(m_attributes.stride == 4 * sizeof(float)); + Q_ASSERT(m_attributes.attributes[0].position == 0); + Q_ASSERT(m_attributes.attributes[0].tupleSize == 2); + Q_ASSERT(m_attributes.attributes[0].type == GL_FLOAT); + Q_ASSERT(m_attributes.attributes[1].position == 1); + Q_ASSERT(m_attributes.attributes[1].tupleSize == 2); + Q_ASSERT(m_attributes.attributes[1].type == GL_FLOAT); + return (const TexturedPoint2D *) m_data; +} + +inline const QSGGeometry::ColoredPoint2D *QSGGeometry::vertexDataAsColoredPoint2D() const +{ + Q_ASSERT(m_attributes.count == 2); + Q_ASSERT(m_attributes.stride == 2 * sizeof(float) + 4 * sizeof(char)); + Q_ASSERT(m_attributes.attributes[0].position == 0); + Q_ASSERT(m_attributes.attributes[0].tupleSize == 2); + Q_ASSERT(m_attributes.attributes[0].type == GL_FLOAT); + Q_ASSERT(m_attributes.attributes[1].position == 1); + Q_ASSERT(m_attributes.attributes[1].tupleSize == 4); + Q_ASSERT(m_attributes.attributes[1].type == GL_UNSIGNED_BYTE); + return (const ColoredPoint2D *) m_data; +} + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif // QSGGEOMETRY_H diff --git a/src/imports/shaders/shadereffect.cpp b/src/imports/shaders/shadereffect.cpp new file mode 100644 index 0000000..bbea43c --- /dev/null +++ b/src/imports/shaders/shadereffect.cpp @@ -0,0 +1,192 @@ +/**************************************************************************** +** +** 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 QML Shaders plugin 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 "shadereffect.h" +#include "shadereffectbuffer.h" +#include "shadereffectsource.h" + +#include <QDeclarativeItem> +#include <QPainter> +#include <QtOpenGL> + +static QTransform savedWorldTransform; + +ShaderEffect::ShaderEffect(QObject *parent) + : QGraphicsEffect(parent) + , m_changed(true) +{ +} + +ShaderEffect::~ShaderEffect() +{ +} + +void ShaderEffect::prepareBufferedDraw(QPainter *painter) +{ + // This workaround needed because QGraphicsEffect seems to always utilize default painters worldtransform + // instead of the active painters worldtransform. + const ShaderEffectBuffer *effectBuffer = dynamic_cast<ShaderEffectBuffer*> (painter->device()); + if (effectBuffer) { + savedWorldTransform = painter->worldTransform() * savedWorldTransform; + painter->setWorldTransform(savedWorldTransform); + } else { + savedWorldTransform = painter->worldTransform(); + } +} + +void ShaderEffect::draw (QPainter *painter) +{ + const QGLContext *context = QGLContext::currentContext(); + + prepareBufferedDraw(painter); + + if (context) { + updateRenderTargets(); + } + + if (!context || m_renderTargets.count() == 0 || !hideOriginal()) + drawSource(painter); +} + +void ShaderEffect::updateRenderTargets() +{ + if (!m_changed) + return; + + m_changed = false; + + int count = m_renderTargets.count(); + for (int i = 0; i < count; i++) { + if (m_renderTargets[i]->isLive() || m_renderTargets[i]->isDirtyTexture()) { + m_renderTargets[i]->updateBackbuffer(); + ShaderEffectBuffer* target = m_renderTargets[i]->fbo(); + if (target && target->isValid() && target->width() > 0 && target->height() > 0) { + QPainter p(target); + p.setCompositionMode(QPainter::CompositionMode_Clear); + p.fillRect(QRect(QPoint(0, 0), target->size()), Qt::transparent); + p.setCompositionMode(QPainter::CompositionMode_SourceOver); + + QRectF sourceRect = m_renderTargets[i]->sourceRect(); + QSize textureSize = m_renderTargets[i]->textureSize(); + + qreal yflip = m_renderTargets[i]->isMirrored() ? -1.0 : 1.0; // flip y to match scenegraph, it also flips texturecoordinates + qreal xscale = 1.0; + qreal yscale = 1.0 * yflip; + + qreal leftMargin = 0.0; + qreal rightMargin = 0.0; + qreal topMargin = 0.0; + qreal bottomMargin = 0.0; + + qreal width = m_renderTargets[i]->sourceItem()->width(); + qreal height = m_renderTargets[i]->sourceItem()->height(); + + if (!sourceRect.isEmpty()) { + leftMargin = -sourceRect.left(); + rightMargin = sourceRect.right() - width; + topMargin = -sourceRect.top(); + bottomMargin = sourceRect.bottom() - height; + } + + if ((width + leftMargin + rightMargin) > 0 && (height + topMargin + bottomMargin) > 0) { + if (!textureSize.isEmpty()) { + qreal textureWidth = textureSize.width(); + qreal textureHeight = textureSize.height(); + + xscale = width / (width + leftMargin + rightMargin); + yscale = height / (height + topMargin + bottomMargin); + + p.translate(textureWidth / 2, textureHeight / 2); + p.scale(xscale, yscale * yflip); + p.translate(-textureWidth / 2, -textureHeight / 2); + p.scale(textureWidth / width, textureHeight / height); + } else { + xscale = width / (width + leftMargin + rightMargin); + yscale = height / (height + topMargin + bottomMargin); + + p.translate(width / 2, height / 2); + p.scale(xscale, yscale * yflip); + p.translate(-width / 2, -height / 2); + } + } + + drawSource(&p); + p.end(); + m_renderTargets[i]->markSceneGraphDirty(); + } + } + } +} + +void ShaderEffect::sourceChanged (ChangeFlags flags) +{ + Q_UNUSED(flags); + m_changed = true; +} + +void ShaderEffect::addRenderTarget(ShaderEffectSource *target) +{ + if (!m_renderTargets.contains(target)) + m_renderTargets.append(target); +} + +void ShaderEffect::removeRenderTarget(ShaderEffectSource *target) +{ + int index = m_renderTargets.indexOf(target); + if (index >= 0) + m_renderTargets.remove(index); + else + qWarning() << "ShaderEffect::removeRenderTarget - did not find target."; +} + +bool ShaderEffect::hideOriginal() const +{ + if (m_renderTargets.count() == 0) + return false; + + // Just like scenegraph version, if there is even one source that says "hide original" we hide it. + int count = m_renderTargets.count(); + for (int i = 0; i < count; i++) { + if (m_renderTargets[i]->hideSource()) + return true; + } + return false; +} diff --git a/src/imports/shaders/shadereffect.h b/src/imports/shaders/shadereffect.h new file mode 100644 index 0000000..35a697b --- /dev/null +++ b/src/imports/shaders/shadereffect.h @@ -0,0 +1,81 @@ +/**************************************************************************** +** +** 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 QML Shaders plugin 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 SHADEREFFECT_H +#define SHADEREFFECT_H + +#include <QGraphicsEffect> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +class ShaderEffectSource; + +class ShaderEffect : public QGraphicsEffect +{ + Q_OBJECT + +public: + ShaderEffect(QObject *parent = 0); + ~ShaderEffect(); + void addRenderTarget(ShaderEffectSource *target); + void removeRenderTarget(ShaderEffectSource *target); + +protected: + virtual void draw (QPainter *painter); + virtual void sourceChanged (ChangeFlags flags); + +private: + void prepareBufferedDraw(QPainter *painter); + void updateRenderTargets(); + bool hideOriginal() const; + +public: + QVector<ShaderEffectSource*> m_renderTargets; + bool m_changed : 1; +}; + +QT_END_HEADER + +QT_END_NAMESPACE + +#endif // SHADEREFFECT_H diff --git a/src/imports/shaders/shadereffectbuffer.cpp b/src/imports/shaders/shadereffectbuffer.cpp new file mode 100644 index 0000000..4c76ada --- /dev/null +++ b/src/imports/shaders/shadereffectbuffer.cpp @@ -0,0 +1,52 @@ +/**************************************************************************** +** +** 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 QML Shaders plugin 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 "shadereffectbuffer.h" + +ShaderEffectBuffer::ShaderEffectBuffer(const QSize & size, const QGLFramebufferObjectFormat & format) + : QGLFramebufferObject(size, format) +{ +} + +ShaderEffectBuffer::~ShaderEffectBuffer() +{ +} + diff --git a/src/imports/shaders/shadereffectbuffer.h b/src/imports/shaders/shadereffectbuffer.h new file mode 100644 index 0000000..dcab6ec --- /dev/null +++ b/src/imports/shaders/shadereffectbuffer.h @@ -0,0 +1,62 @@ +/**************************************************************************** +** +** 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 QML Shaders plugin 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 SHADEREFFECTBUFFER_H +#define SHADEREFFECTBUFFER_H + +#include <QtOpenGL> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +class ShaderEffectBuffer : public QGLFramebufferObject +{ +public: + ShaderEffectBuffer(const QSize &size, const QGLFramebufferObjectFormat &format); + ~ShaderEffectBuffer(); +}; + +QT_END_HEADER + +QT_END_NAMESPACE + +#endif // SHADEREFFECTBUFFER_H diff --git a/src/imports/shaders/shadereffectitem.cpp b/src/imports/shaders/shadereffectitem.cpp new file mode 100644 index 0000000..5bb906c --- /dev/null +++ b/src/imports/shaders/shadereffectitem.cpp @@ -0,0 +1,915 @@ +/**************************************************************************** +** +** 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 QML Shaders plugin 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 "shadereffectitem.h" +#include "shadereffect.h" +#include "glfunctions.h" + +#include <QPainter> +#include <QtOpenGL> + +static const char qt_default_vertex_code[] = + "uniform highp mat4 qt_ModelViewProjectionMatrix;\n" + "attribute highp vec4 qt_Vertex;\n" + "attribute highp vec2 qt_MultiTexCoord0;\n" + "varying highp vec2 qt_TexCoord0;\n" + "void main(void)\n" + "{\n" + "qt_TexCoord0 = qt_MultiTexCoord0;\n" + "gl_Position = qt_ModelViewProjectionMatrix * qt_Vertex;\n" + "}\n"; + +static const char qt_default_fragment_code[] = + "varying highp vec2 qt_TexCoord0;\n" + "uniform lowp sampler2D source;\n" + "void main(void)\n" + "{\n" + "gl_FragColor = texture2D(source, qt_TexCoord0.st);\n" + "}\n"; + +static const char qt_postion_attribute_name[] = "qt_Vertex"; +static const char qt_texcoord_attribute_name[] = "qt_MultiTexCoord0"; +static const char qt_emptyAttributeName[] = ""; + + +/*! + \qmlclass ShaderEffectItem ShaderEffectItem + \ingroup qmlshadersplugin + \brief The ShaderEffectItem object alters the output of given item with OpenGL shaders. + \inherits Item + + ShaderEffectItem is available in the \bold{Qt.labs.shaders 1.0} module. + \e {Elements in the Qt.labs module are not guaranteed to remain compatible + in future versions.} + + This element provides preliminary support for embedding OpenGL shader code into QML, + and may be heavily changed or removed in later versions. + + Requirement for the use of shaders is that the application is either using + Qt OpenGL graphicssystem or is forced to use OpenGL by setting QGLWidget as the viewport to QDeclarativeView (recommened way). + + ShaderEffectItem internal behaviour is such that during the paint event it first renders its + ShaderEffectSource items into a OpenGL framebuffer object which can be used as a texture. If the ShaderEffectSource is defined to be an image, + it is directly uploaded as a texture. The texture(s) containing the source pixelcontent are then bound to graphics + pipeline texture units. Finally a textured mesh is passed to the vertex- and fragmentshaders which + then produce the final output for the ShaderEffectItem. It is possible to alter the mesh structure by defining + the amount vertices it contains, but currently it is not possible to import complex 3D-models to be used as the mesh. + + It is possible to define one or more ShaderEffectItems to be a ShaderEffectSource for other ShaderEffectItems, but ShaderEffectItem + should never be declared as a child element of its source item(s) because it would cause circular loop in the painting. + + A standard set of vertex attributes are provided for the shaders: + + \list + \o qt_Vertex - The primary position of the vertex. + \o qt_MultiTexCoord0 - The texture co-ordinate at each vertex for texture unit 0. + \endlist + + Additionally following uniforms are available for shaders: + + \list + \o qt_Opacity - Effective opacity of the item. + \o qt_ModelViewProjectionMatrix - current 4x4 transformation matrix of the item. + \endlist + + Furthermore, it is possible to utilize automatic QML propertybinding into vertex- and fragment shader + uniforms. Conversions are done according to the table below: + + \table + \header + \o QML property + \o GLSL uniform + \row + \o property double foo: 1.0 + \o uniform highp float foo + \row + \o property real foo: 1.0 + \o uniform highp float foo + \row + \o property bool foo: true + \o uniform bool foo + \row + \o property int foo: 1 + \o uniform int foo + \row + \o property variant foo: Qt.point(1,1) + \o uniform highp vec2 foo + \row + \o property variant foo: Qt.size(1, 1) + \o uniform highp vec2 foo + \row + \o property variant foo: Qt.rect(1, 1, 2, 2) + \o uniform highp vec4 foo + \row + \o property color foo: "#00000000" + \o uniform lowp vec4 foo + \row + \o property variant foo: Qt.vector3d(1.0, 2.0, 0.0) + \o uniform highp vec3 foo + \row + \o property variant foo: ShaderEffectSource { SourceItem: bar } + \o uniform lowp sampler2D foo + \endtable + \note + The uniform precision definitions in the above table are not strict, it is possible to choose the uniform + precision based on what is the most suitable for the shader code for that particular uniform. + + + The below example uses fragment shader to create simple wiggly effect to a text label. + Automatic property binding takes care of binding the properties to the uniforms if their + names are identical. ShaderEffectSource referring to textLabel is bound to sampler2D uniform inside the fragment + shader code. + + \qml +import QtQuick 1.0 +import Qt.labs.shaders 1.0 + +Rectangle { + width: 300 + height: 300 + color: "black" + + Text { + id: textLabel + text: "Hello World" + anchors.centerIn: parent + font.pixelSize: 32 + color: "white" + + } + + ShaderEffectItem { + property variant source: ShaderEffectSource { sourceItem: textLabel; hideSource: true } + property real wiggleAmount: 0.005 + anchors.fill: textLabel + + fragmentShader: " + varying highp vec2 qt_TexCoord0; + uniform sampler2D source; + uniform highp float wiggleAmount; + void main(void) + { + highp vec2 wiggledTexCoord = qt_TexCoord0; + wiggledTexCoord.s += sin(4.0 * 3.141592653589 * wiggledTexCoord.t) * wiggleAmount; + gl_FragColor = texture2D(source, wiggledTexCoord.st); + } + " + } +} + \endqml + \image Example1.png + +*/ + +ShaderEffectItem::ShaderEffectItem(QDeclarativeItem *parent) + : QDeclarativeItem(parent) + , m_meshResolution(1, 1) + , m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4) + , m_blending(true) + , m_program_dirty(true) + , m_active(true) + , m_respectsMatrix(false) + , m_respectsOpacity(false) + , m_checkedViewportUpdateMode(false) + , m_checkedOpenGL(false) + , m_checkedShaderPrograms(false) + , m_hasShaderPrograms(false) + , m_mirrored(false) + , m_defaultVertexShader(true) +{ + setFlag(QGraphicsItem::ItemHasNoContents, false); + connect(this, SIGNAL(visibleChanged()), this, SLOT(handleVisibilityChange())); + m_active = isVisible(); +} + +ShaderEffectItem::~ShaderEffectItem() +{ + reset(); +} + + +/*! + \qmlproperty string ShaderEffectItem::fragmentShader + This property holds the OpenGL fragment shader code. + + The default fragment shader is following: + + \code + varying highp vec2 qt_TexCoord0; + uniform sampler2D source; + void main(void) + { + gl_FragColor = texture2D(source, qt_TexCoord0.st); + } + \endcode + +*/ + +/*! + \property ShaderEffectItem::fragmentShader + \brief the OpenGL fragment shader code. +*/ + +void ShaderEffectItem::setFragmentShader(const QString &code) +{ + if (m_fragment_code.constData() == code.constData()) + return; + + m_fragment_code = code; + if (isComponentComplete()) { + reset(); + updateProperties(); + } + emit fragmentShaderChanged(); +} + +/*! + \qmlproperty string ShaderEffectItem::vertexShader + This property holds the OpenGL vertex shader code. + + The default vertex shader is following: + + \code + uniform highp mat4 qt_ModelViewProjectionMatrix; + attribute highp vec4 qt_Vertex; + attribute highp vec2 qt_MultiTexCoord0; + varying highp vec2 qt_TexCoord0; + void main(void) + { + qt_TexCoord0 = qt_MultiTexCoord0; + gl_Position = qt_ModelViewProjectionMatrix * qt_Vertex; + } + \endcode + +*/ + +/*! + \property ShaderEffectItem::vertexShader + \brief the OpenGL vertex shader code. +*/ + +void ShaderEffectItem::setVertexShader(const QString &code) +{ + if (m_vertex_code.constData() == code.constData()) + return; + + m_vertex_code = code; + m_defaultVertexShader = false; + if (isComponentComplete()) { + reset(); + updateProperties(); + } + emit vertexShaderChanged(); +} + +/*! + \qmlproperty bool ShaderEffectItem::blending + This property defines whether item is drawn using blending. + + If true, the RGBA pixel output from the fragment shader is blended with + the pixel RGBA-values already in the framebuffer. + + If false, fragment shader output is written to framebuffer as such. + + Usually drawing without blending is slightly faster, thus disabling blending + might be a good choice when item is used as a background element. + + \note + By default the pixel data in textures is stored in 32-bit premultiplied alpha format. + This should be taken into account when blending or reading the pixel values + in the fragment shader code. + + The default value is true. +*/ + +/*! + \property ShaderEffectItem::blending + \brief the drawing is done using blending. +*/ + +void ShaderEffectItem::setBlending(bool enable) +{ + if (m_blending == enable) + return; + + m_blending = enable; + m_changed = true; + emit blendingChanged(); +} + + +/*! + \qmlproperty QSize ShaderEffectItem::meshResolution + This property defines to how many triangles the item is divided into before its + vertices are passed to the vertex shader. + + Triangles are defined as triangle strips and the amount of triangles can be controlled + separately for x and y-axis. + + The default value is QSize(1,1). +*/ + +/*! + \property ShaderEffectItem::meshResolution + \brief the amount of triangles in the mesh for both x and y-axis. +*/ + +void ShaderEffectItem::setMeshResolution(const QSize &size) +{ + if (size == m_meshResolution) + return; + + m_meshResolution = size; + emit meshResolutionChanged(); + updateGeometry(); +} + +void ShaderEffectItem::componentComplete() +{ + updateProperties(); + QDeclarativeItem::componentComplete(); +} + +void ShaderEffectItem::checkViewportUpdateMode() +{ + if (!m_checkedViewportUpdateMode) { + QGraphicsScene *s = scene(); + if (s){ + QList<QGraphicsView*> views = s->views(); + for (int i = 0; i < views.count(); i++) { + if (views[i]->viewportUpdateMode() != QGraphicsView::FullViewportUpdate) { + qWarning() << "ShaderEffectItem::checkViewportUpdateMode - consider setting QGraphicsView::FullViewportUpdate mode with OpenGL!"; + } + } + } + m_checkedViewportUpdateMode = true; + } +} + +void ShaderEffectItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *) +{ + if (!m_active) return; + + const QGLContext *context = QGLContext::currentContext(); + + if (context) { + if (!m_checkedShaderPrograms) { + m_hasShaderPrograms = QGLShaderProgram::hasOpenGLShaderPrograms(context); + m_checkedShaderPrograms = true; + + if (!m_hasShaderPrograms) + qWarning() << "ShaderEffectItem::paint - Shader programs are not supported"; + } + + if ( !m_hasShaderPrograms ) + return; + + checkViewportUpdateMode(); + painter->save(); + painter->beginNativePainting(); + QMatrix4x4 combinedMatrix = QMatrix4x4(painter->transform()); + renderEffect(painter, combinedMatrix); + painter->endNativePainting(); + painter->restore(); + } else { + if (!m_checkedOpenGL) { + qWarning() << "ShaderEffectItem::paint - OpenGL not available"; + m_checkedOpenGL = true; + } + } +} + +void ShaderEffectItem::renderEffect(QPainter *painter, const QMatrix4x4 &matrix) +{ + if (!painter || !painter->device()) + return; + + if (!m_program.isLinked() || m_program_dirty) + updateShaderProgram(); + + m_program.bind(); + + QMatrix4x4 combinedMatrix; + combinedMatrix.scale(2.0 / painter->device()->width(), -2.0 / painter->device()->height(), 1.0); + combinedMatrix.translate(-painter->device()->width() / 2.0, -painter->device()->height() / 2.0 ); + combinedMatrix *= matrix; + updateEffectState(combinedMatrix); + + for (int i = 0; i < m_attributeNames.size(); ++i) { + m_program.enableAttributeArray(m_geometry.attributes()[i].position); + } + + bindGeometry(); + + // Optimization, disable depth test when we know we don't need it. + if (m_defaultVertexShader) { + glDepthMask(false); + glDisable(GL_DEPTH_TEST); + } else { + glEnable(GL_DEPTH_TEST); + glDepthFunc(GL_GREATER); + glDepthMask(true); +#if defined(QT_OPENGL_ES) + glClearDepthf(0); +#else + glClearDepth(0); +#endif + glClearColor(0, 0, 0, 0); + glClear(GL_DEPTH_BUFFER_BIT); + } + + if (m_blending){ + glEnable(GL_BLEND); + glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_ALPHA); + } else { + glDisable(GL_BLEND); + } + + if (m_geometry.indexCount()) + glDrawElements(m_geometry.drawingMode(), m_geometry.indexCount(), m_geometry.indexType(), m_geometry.indexData()); + else + glDrawArrays(m_geometry.drawingMode(), 0, m_geometry.vertexCount()); + + glDepthMask(false); + glDisable(GL_DEPTH_TEST); + + for (int i = 0; i < m_attributeNames.size(); ++i) + m_program.disableAttributeArray(m_geometry.attributes()[i].position); +} + +void ShaderEffectItem::updateEffectState(const QMatrix4x4 &matrix) +{ + for (int i = m_sources.size() - 1; i >= 0; --i) { + const ShaderEffectItem::SourceData &source = m_sources.at(i); + if (!source.source) + continue; + + glActiveTexture(GL_TEXTURE0 + i); + source.source->bind(); + } + + if (m_respectsOpacity) + m_program.setUniformValue("qt_Opacity", static_cast<float> (effectiveOpacity())); + + if (m_respectsMatrix){ + m_program.setUniformValue("qt_ModelViewProjectionMatrix", matrix); + } + + QSet<QByteArray>::const_iterator it; + for (it = m_uniformNames.begin(); it != m_uniformNames.end(); ++it) { + const QByteArray &name = *it; + QVariant v = property(name.constData()); + + switch (v.type()) { + case QVariant::Color: + m_program.setUniformValue(name.constData(), qvariant_cast<QColor>(v)); + break; + case QVariant::Double: + m_program.setUniformValue(name.constData(), (float) qvariant_cast<double>(v)); + break; + case QVariant::Transform: + m_program.setUniformValue(name.constData(), qvariant_cast<QTransform>(v)); + break; + case QVariant::Int: + m_program.setUniformValue(name.constData(), v.toInt()); + break; + case QVariant::Bool: + m_program.setUniformValue(name.constData(), GLint(v.toBool())); + break; + case QVariant::Size: + case QVariant::SizeF: + m_program.setUniformValue(name.constData(), v.toSizeF()); + break; + case QVariant::Point: + case QVariant::PointF: + m_program.setUniformValue(name.constData(), v.toPointF()); + break; + case QVariant::Rect: + case QVariant::RectF: + { + QRectF r = v.toRectF(); + m_program.setUniformValue(name.constData(), r.x(), r.y(), r.width(), r.height()); + } + break; + case QVariant::Vector3D: + m_program.setUniformValue(name.constData(), qvariant_cast<QVector3D>(v)); + break; + default: + break; + } + } +} + +static inline int size_of_type(GLenum type) +{ + static int sizes[] = { + sizeof(char), + sizeof(unsigned char), + sizeof(short), + sizeof(unsigned short), + sizeof(int), + sizeof(unsigned int), + sizeof(float), + 2, + 3, + 4, + sizeof(double) + }; + return sizes[type - GL_BYTE]; +} + +void ShaderEffectItem::bindGeometry() +{ + char const *const *attrNames = m_attributeNames.constData(); + int offset = 0; + for (int j = 0; j < m_attributeNames.size(); ++j) { + if (!*attrNames[j]) + continue; + Q_ASSERT_X(j < m_geometry.attributeCount(), "ShaderEffectItem::bindGeometry()", "Geometry lacks attribute required by material"); + const QSGGeometry::Attribute &a = m_geometry.attributes()[j]; + Q_ASSERT_X(j == a.position, "ShaderEffectItem::bindGeometry()", "Geometry does not have continuous attribute positions"); +#if defined(QT_OPENGL_ES_2) + GLboolean normalize = a.type != GL_FLOAT; +#else + GLboolean normalize = a.type != GL_FLOAT && a.type != GL_DOUBLE; +#endif + if (normalize) + qWarning() << "ShaderEffectItem::bindGeometry() - non supported attribute type!"; + + m_program.setAttributeArray(a.position, (GLfloat*) (((char*) m_geometry.vertexData()) + offset), a.tupleSize, m_geometry.stride()); + //glVertexAttribPointer(a.position, a.tupleSize, a.type, normalize, m_geometry.stride(), (char *) m_geometry.vertexData() + offset); + offset += a.tupleSize * size_of_type(a.type); + } +} + +void ShaderEffectItem::updateGeometry() +{ + QRectF srcRect(0, 1, 1, -1); + + if (m_mirrored) + srcRect = QRectF(0, 0, 1, 1); + + QRectF dstRect = QRectF(0,0, width(), height()); + + int vmesh = m_meshResolution.height(); + int hmesh = m_meshResolution.width(); + + QSGGeometry *g = &m_geometry; + if (vmesh == 1 && hmesh == 1) { + if (g->vertexCount() != 4) + g->allocate(4); + QSGGeometry::updateTexturedRectGeometry(g, dstRect, srcRect); + return; + } + + g->allocate((vmesh + 1) * (hmesh + 1), vmesh * 2 * (hmesh + 2)); + + QSGGeometry::TexturedPoint2D *vdata = g->vertexDataAsTexturedPoint2D(); + + for (int iy = 0; iy <= vmesh; ++iy) { + float fy = iy / float(vmesh); + float y = float(dstRect.top()) + fy * float(dstRect.height()); + float ty = float(srcRect.top()) + fy * float(srcRect.height()); + for (int ix = 0; ix <= hmesh; ++ix) { + float fx = ix / float(hmesh); + vdata->x = float(dstRect.left()) + fx * float(dstRect.width()); + vdata->y = y; + vdata->tx = float(srcRect.left()) + fx * float(srcRect.width()); + vdata->ty = ty; + ++vdata; + } + } + + quint16 *indices = (quint16 *)g->indexDataAsUShort(); + int i = 0; + for (int iy = 0; iy < vmesh; ++iy) { + *(indices++) = i + hmesh + 1; + for (int ix = 0; ix <= hmesh; ++ix, ++i) { + *(indices++) = i + hmesh + 1; + *(indices++) = i; + } + *(indices++) = i - 1; + } +} + +void ShaderEffectItem::setActive(bool enable) +{ + if (m_active == enable) + return; + + if (m_active) { + for (int i = 0; i < m_sources.size(); ++i) { + ShaderEffectSource *source = m_sources.at(i).source; + if (!source) + continue; + disconnect(source, SIGNAL(repaintRequired()), this, SLOT(markDirty())); + source->derefFromEffectItem(); + } + } + + m_active = enable; + + if (m_active) { + for (int i = 0; i < m_sources.size(); ++i) { + ShaderEffectSource *source = m_sources.at(i).source; + if (!source) + continue; + source->refFromEffectItem(); + connect(source, SIGNAL(repaintRequired()), this, SLOT(markDirty())); + } + } + + emit activeChanged(); + markDirty(); +} + +void ShaderEffectItem::preprocess() +{ + for (int i = 0; i < m_sources.size(); ++i) { + ShaderEffectSource *source = m_sources.at(i).source; + if (source) + source->updateBackbuffer(); + } +} + +void ShaderEffectItem::geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry) +{ + if (newGeometry.size() != oldGeometry.size()) + updateGeometry(); + QDeclarativeItem::geometryChanged(newGeometry, oldGeometry); +} + +void ShaderEffectItem::changeSource(int index) +{ + Q_ASSERT(index >= 0 && index < m_sources.size()); + QVariant v = property(m_sources.at(index).name.constData()); + setSource(v, index); +} + +void ShaderEffectItem::markDirty() { + update(); +} + +void ShaderEffectItem::setSource(const QVariant &var, int index) +{ + Q_ASSERT(index >= 0 && index < m_sources.size()); + + SourceData &source = m_sources[index]; + + source.source = 0; + source.item = 0; + if (var.isNull()) { + return; + } else if (!qVariantCanConvert<QObject *>(var)) { + qWarning("Could not assign source of type '%s' to property '%s'.", var.typeName(), source.name.constData()); + return; + } + + QObject *obj = qVariantValue<QObject *>(var); + + source.source = qobject_cast<ShaderEffectSource *>(obj); + source.item = qobject_cast<QDeclarativeItem *>(obj); + + if (!source.item) + qWarning("Could not assign property '%s', did not implement QDeclarativeItem.", source.name.constData()); + + if (!source.source) + qWarning("Could not assign property '%s', did not implement ShaderEffectSource.", source.name.constData()); + + // TODO: Find better solution. + // 'source.item' needs a canvas to get a scenegraph node. + // The easiest way to make sure it gets a canvas is to + // make it a part of the same item tree as 'this'. + if (source.item && source.item->parentItem() == 0) { + source.item->setParentItem(this); + // Unlike in scenegraph, we cannot set item invisible here because qgraphicsview would optimize it away. + } + + // Unlike in scenegraph, ref counting is used to optimize memory consumption. Sources themself may free fbos when not referenced. + if (m_active && source.source) { + source.source->refFromEffectItem(); + connect(source.source, SIGNAL(repaintRequired()), this, SLOT(markDirty())); + } +} + +void ShaderEffectItem::disconnectPropertySignals() +{ + disconnect(this, 0, this, SLOT(markDirty())); + for (int i = 0; i < m_sources.size(); ++i) { + SourceData &source = m_sources[i]; + disconnect(this, 0, source.mapper, 0); + disconnect(source.mapper, 0, this, 0); + } +} + +void ShaderEffectItem::connectPropertySignals() +{ + QSet<QByteArray>::const_iterator it; + for (it = m_uniformNames.begin(); it != m_uniformNames.end(); ++it) { + int pi = metaObject()->indexOfProperty(it->constData()); + if (pi >= 0) { + QMetaProperty mp = metaObject()->property(pi); + if (!mp.hasNotifySignal()) + qWarning("ShaderEffectItem: property '%s' does not have notification method!", it->constData()); + QByteArray signalName("2"); + signalName.append(mp.notifySignal().signature()); + connect(this, signalName, this, SLOT(markDirty())); + } else { + qWarning("ShaderEffectItem: '%s' does not have a matching property!", it->constData()); + } + } + for (int i = 0; i < m_sources.size(); ++i) { + SourceData &source = m_sources[i]; + int pi = metaObject()->indexOfProperty(source.name.constData()); + if (pi >= 0) { + QMetaProperty mp = metaObject()->property(pi); + QByteArray signalName("2"); + signalName.append(mp.notifySignal().signature()); + connect(this, signalName, source.mapper, SLOT(map())); + source.mapper->setMapping(this, i); + connect(source.mapper, SIGNAL(mapped(int)), this, SLOT(changeSource(int))); + } else { + qWarning("ShaderEffectItem: '%s' does not have a matching source!", source.name.constData()); + } + } +} + +void ShaderEffectItem::reset() +{ + disconnectPropertySignals(); + + m_program.removeAllShaders(); + m_attributeNames.clear(); + m_uniformNames.clear(); + for (int i = 0; i < m_sources.size(); ++i) { + const SourceData &source = m_sources.at(i); + if (m_active && source.source) + source.source->derefFromEffectItem(); + delete source.mapper; + } + + m_sources.clear(); + m_program_dirty = true; +} + +void ShaderEffectItem::updateProperties() +{ + QString vertexCode = m_vertex_code; + QString fragmentCode = m_fragment_code; + + if (vertexCode.isEmpty()) + vertexCode = qt_default_vertex_code; + + if (fragmentCode.isEmpty()) + fragmentCode = qt_default_fragment_code; + + lookThroughShaderCode(vertexCode); + lookThroughShaderCode(fragmentCode); + + if (!m_attributeNames.contains(qt_postion_attribute_name)) + qWarning("ShaderEffectItem: Missing reference to \'%s\'.", qt_postion_attribute_name); + if (!m_attributeNames.contains(qt_texcoord_attribute_name)) + qWarning("ShaderEffectItem: Missing reference to \'%s\'.", qt_texcoord_attribute_name); + if (!m_respectsMatrix) + qWarning("ShaderEffectItem: Missing reference to \'qt_ModelViewProjectionMatrix\'."); + + for (int i = 0; i < m_sources.size(); ++i) { + QVariant v = property(m_sources.at(i).name); + setSource(v, i); // Property exists. + } + + connectPropertySignals(); +} + +void ShaderEffectItem::updateShaderProgram() +{ + QString vertexCode = m_vertex_code; + QString fragmentCode = m_fragment_code; + + if (vertexCode.isEmpty()) + vertexCode = QString::fromLatin1(qt_default_vertex_code); + + if (fragmentCode.isEmpty()) + fragmentCode = QString::fromLatin1(qt_default_fragment_code); + + m_program.addShaderFromSourceCode(QGLShader::Vertex, vertexCode); + m_program.addShaderFromSourceCode(QGLShader::Fragment, fragmentCode); + + for (int i = 0; i < m_attributeNames.size(); ++i) { + m_program.bindAttributeLocation(m_attributeNames.at(i), m_geometry.attributes()[i].position); + } + + if (!m_program.link()) { + qWarning("ShaderEffectItem: Shader compilation failed:"); + qWarning() << m_program.log(); + } + + if (!m_attributeNames.contains(qt_postion_attribute_name)) + qWarning("ShaderEffectItem: Missing reference to \'qt_Vertex\'."); + if (!m_attributeNames.contains(qt_texcoord_attribute_name)) + qWarning("ShaderEffectItem: Missing reference to \'qt_MultiTexCoord0\'."); + if (!m_respectsMatrix) + qWarning("ShaderEffectItem: Missing reference to \'qt_ModelViewProjectionMatrix\'."); + + if (m_program.isLinked()) { + m_program.bind(); + for (int i = 0; i < m_sources.size(); ++i) + m_program.setUniformValue(m_sources.at(i).name.constData(), i); + } + + m_program_dirty = false; +} + +void ShaderEffectItem::lookThroughShaderCode(const QString &code) +{ + // Regexp for matching attributes and uniforms. + // In human readable form: attribute|uniform [lowp|mediump|highp] <type> <name> + static QRegExp re(QLatin1String("\\b(attribute|uniform)\\b\\s*\\b(?:lowp|mediump|highp)?\\b\\s*\\b(\\w+)\\b\\s*\\b(\\w+)")); + Q_ASSERT(re.isValid()); + + int pos = -1; + + //QString wideCode = QString::fromLatin1(code.constData(), code.size()); + QString wideCode = code; + + while ((pos = re.indexIn(wideCode, pos + 1)) != -1) { + QByteArray decl = re.cap(1).toLatin1(); // uniform or attribute + QByteArray type = re.cap(2).toLatin1(); // type + QByteArray name = re.cap(3).toLatin1(); // variable name + + if (decl == "attribute") { + if (name == qt_postion_attribute_name) { + m_attributeNames.insert(0, qt_postion_attribute_name); + } else if (name == "qt_MultiTexCoord0") { + if (m_attributeNames.at(0) == 0) { + m_attributeNames.insert(0, qt_emptyAttributeName); + } + m_attributeNames.insert(1, qt_texcoord_attribute_name); + } else { + // TODO: Support user defined attributes. + qWarning("ShaderEffectItem: Attribute \'%s\' not recognized.", name.constData()); + } + } else { + Q_ASSERT(decl == "uniform"); + + if (name == "qt_ModelViewProjectionMatrix") { + m_respectsMatrix = true; + } else if (name == "qt_Opacity") { + m_respectsOpacity = true; + } else { + m_uniformNames.insert(name); + if (type == "sampler2D") { + SourceData d; + d.mapper = new QSignalMapper; + d.source = 0; + d.name = name; + d.item = 0; + m_sources.append(d); + } + } + } + } +} + +void ShaderEffectItem::handleVisibilityChange() +{ + setActive(isVisible()); +} diff --git a/src/imports/shaders/shadereffectitem.h b/src/imports/shaders/shadereffectitem.h new file mode 100644 index 0000000..1d27543 --- /dev/null +++ b/src/imports/shaders/shadereffectitem.h @@ -0,0 +1,152 @@ +/**************************************************************************** +** +** 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 QML Shaders plugin 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 SHADEREFFECTITEM_H +#define SHADEREFFECTITEM_H + +#include <QDeclarativeItem> +#include <QtOpenGL> +#include "shadereffectsource.h" +#include "scenegraph/qsggeometry.h" + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +class ShaderEffectItem : public QDeclarativeItem +{ + Q_OBJECT + Q_INTERFACES(QDeclarativeParserStatus) + Q_PROPERTY(QString fragmentShader READ fragmentShader WRITE setFragmentShader NOTIFY fragmentShaderChanged) + Q_PROPERTY(QString vertexShader READ vertexShader WRITE setVertexShader NOTIFY vertexShaderChanged) + Q_PROPERTY(bool blending READ blending WRITE setBlending NOTIFY blendingChanged) + Q_PROPERTY(QSize meshResolution READ meshResolution WRITE setMeshResolution NOTIFY meshResolutionChanged) + +public: + ShaderEffectItem(QDeclarativeItem* parent = 0); + ~ShaderEffectItem(); + + virtual void componentComplete(); + void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0); + + QString fragmentShader() const { return m_fragment_code; } + void setFragmentShader(const QString &code); + + QString vertexShader() const { return m_vertex_code; } + void setVertexShader(const QString &code); + + bool blending() const { return m_blending; } + void setBlending(bool enable); + + QSize meshResolution() const { return m_meshResolution; } + void setMeshResolution(const QSize &size); + + void preprocess(); + +Q_SIGNALS: + void fragmentShaderChanged(); + void vertexShaderChanged(); + void blendingChanged(); + void activeChanged(); + void meshResolutionChanged(); + +protected: + virtual void geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry); + +private Q_SLOTS: + void changeSource(int index); + void handleVisibilityChange(); + void markDirty(); + +private: + void checkViewportUpdateMode(); + void renderEffect(QPainter *painter, const QMatrix4x4 &matrix); + void updateEffectState(const QMatrix4x4 &matrix); + void updateGeometry(); + void bindGeometry(); + void setSource(const QVariant &var, int index); + void disconnectPropertySignals(); + void connectPropertySignals(); + void reset(); + void updateProperties(); + void updateShaderProgram(); + void lookThroughShaderCode(const QString &code); + bool active() const { return m_active; } + void setActive(bool enable); + +private: + QString m_fragment_code; + QString m_vertex_code; + QGLShaderProgram m_program; + QVector<const char *> m_attributeNames; + QSet<QByteArray> m_uniformNames; + QSize m_meshResolution; + QSGGeometry m_geometry; + + struct SourceData + { + QSignalMapper *mapper; + QPointer<ShaderEffectSource> source; + QPointer<QDeclarativeItem> item; + QByteArray name; + }; + + QVector<SourceData> m_sources; + + bool m_changed : 1; + bool m_blending : 1; + bool m_program_dirty : 1; + bool m_active : 1; + bool m_respectsMatrix : 1; + bool m_respectsOpacity : 1; + bool m_checkedViewportUpdateMode : 1; + bool m_checkedOpenGL : 1; + bool m_checkedShaderPrograms : 1; + bool m_hasShaderPrograms : 1; + bool m_mirrored : 1; + bool m_defaultVertexShader : 1; +}; + +QT_END_HEADER + +QT_END_NAMESPACE + +#endif // SHADEREFFECTITEM_H diff --git a/src/imports/shaders/shadereffectsource.cpp b/src/imports/shaders/shadereffectsource.cpp new file mode 100644 index 0000000..dec3bb0 --- /dev/null +++ b/src/imports/shaders/shadereffectsource.cpp @@ -0,0 +1,472 @@ +/**************************************************************************** +** +** 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 QML Shaders plugin 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 "shadereffectsource.h" +#include "shadereffectbuffer.h" +#include "shadereffect.h" +#include "glfunctions.h" + +#include <QtOpenGL> + +/*! + \qmlclass ShaderEffectSource ShaderEffectSource + \ingroup qmlshadersplugin + \brief The ShaderEffectSource object encapsulates the source content for the ShaderEffectItem. + + ShaderEffectSource is available in the \bold{Qt.labs.shaders 1.0} module. + \e {Elements in the Qt.labs module are not guaranteed to remain compatible + in future versions.} + + This element provides preliminary support for OpenGL shaders in QML, + and may be heavily changed or removed in later versions. + + Requirement for the ability to use of shaders is that the application is either using + opengl graphicssystem or has set QGLWidget as the viewport to QDeclarativeView (recommended way). + + ShaderEffectSource object encapsulates the source content so that it can be utilized in ShaderEffectItem. + Source content can be a live QML object tree, or a snapshot of QML object tree. + +*/ + +ShaderEffectSource::ShaderEffectSource(QDeclarativeItem *parent) + : QDeclarativeItem(parent) + , m_sourceItem(0) + , m_wrapMode(ClampToEdge) + , m_sourceRect(0, 0, 0, 0) + , m_textureSize(0, 0) + , m_format(RGBA) + , m_size(0, 0) + , m_fbo(0) + , m_multisampledFbo(0) + , m_refs(0) + , m_dirtyTexture(true) + , m_dirtySceneGraph(true) + , m_multisamplingSupported(false) + , m_checkedForMultisamplingSupport(false) + , m_live(true) + , m_hideSource(false) + , m_mirrored(false) +{ +} + +ShaderEffectSource::~ShaderEffectSource() +{ + if (m_refs && m_sourceItem) + detachSourceItem(); + + delete m_fbo; + delete m_multisampledFbo; +} + +/*! + \qmlproperty Item ShaderEffectSource::sourceItem + This property holds the Item which is used as the source for the shader effect. + If the item has children, those are included as well. + + \note When source item content is passed to the ShaderEffectItem(s), it is always clipped to the boundingrect of the + sourceItem regardless of its clipping property. +*/ + +/*! + \property ShaderEffectSource::sourceItem + \brief the Item which is the source for the effect. +*/ + +void ShaderEffectSource::setSourceItem(QDeclarativeItem *item) +{ + if (item == m_sourceItem) + return; + + if (m_sourceItem) { + disconnect(m_sourceItem, SIGNAL(widthChanged()), this, SLOT(markSourceSizeDirty())); + disconnect(m_sourceItem, SIGNAL(heightChanged()), this, SLOT(markSourceSizeDirty())); + + if (m_refs) + detachSourceItem(); + } + + m_sourceItem = item; + + if (m_sourceItem) { + + // Must have some item as parent + if (m_sourceItem->parentItem() == 0) + m_sourceItem->setParentItem(this); + + if (m_refs) + attachSourceItem(); + + connect(m_sourceItem, SIGNAL(widthChanged()), this, SLOT(markSourceSizeDirty())); + connect(m_sourceItem, SIGNAL(heightChanged()), this, SLOT(markSourceSizeDirty())); + } + + updateSizeAndTexture(); + emit sourceItemChanged(); + emit repaintRequired(); +} + +/*! + \qmlproperty QRectF ShaderEffectSource::sourceRect + This property can be used to specify margins for the source content. + + If other value than Qt.rect(0,0,0,0) is assigned to this property, it is interpreted as + specifying a relative source rectangle for the source content. + + For example, setting Qt.rect(-10.0, -10.0, 120.0, 120.0) for a source that has width and height + of 100 pixels would produce 10 pixels margins to each side of the source. + + Margins are useful when the original content is wanted to be spread outside the original source area, + like when creating a dropshadow with the shader or in other similar effects. + + The default value is Qt.rect(0,0,0,0). +*/ + +/*! + \property ShaderEffectSource::sourceRect + \brief the relative sourceRect for the source. +*/ + +void ShaderEffectSource::setSourceRect(const QRectF &rect) +{ + if (rect == m_sourceRect) + return; + m_sourceRect = rect; + updateSizeAndTexture(); + updateBackbuffer(); + emit sourceRectChanged(); + emit repaintRequired(); + + if (m_sourceItem) { + ShaderEffect* effect = qobject_cast<ShaderEffect*> (m_sourceItem->graphicsEffect()); + if (effect) + effect->m_changed = true; + } +} + +/*! + \qmlproperty QSize ShaderEffectSource::textureSize + This property holds the size for the texture containing the source content. + + If value QSize(0,0) is assigned to this property, texture is resized + according to the source size. Otherwise source content is scaled to + the given size. + + The default value is QSize(0,0). +*/ + +/*! + \property ShaderEffectSource::textureSize + \brief the texture size for the source. +*/ + +void ShaderEffectSource::setTextureSize(const QSize &size) +{ + if (size == m_textureSize) + return; + + m_textureSize = size; + updateSizeAndTexture(); + emit textureSizeChanged(); + emit repaintRequired(); + + if (m_sourceItem) { + ShaderEffect* effect = qobject_cast<ShaderEffect*> (m_sourceItem->graphicsEffect()); + if (effect) + effect->m_changed = true; + } +} + +/*! + \qmlproperty bool ShaderEffectSource::live + This property holds the optimization flag to define whether the source item content is changing or + static. + + If value true is assigned to this property, source item content is re-rendered into a + texture for every frame. Setting the value to false improves the performance as it skips + rendering the source item (and its chidleren) and instead immediately passes the previously + rendered and cached texture to the shaders. + + The default value is true. +*/ + +/*! + \property ShaderEffectSource::live + \brief the flag tells whether source item content is changing between frames. +*/ + +void ShaderEffectSource::setLive(bool s) +{ + if (s == m_live) + return; + + m_live = s; + + emit liveChanged(); + emit repaintRequired(); +} + +/*! + \qmlproperty bool ShaderEffectSource::hideSource + This property holds the flag to define whether the original source item is + hidden when the effect item is drawn. + + The default value is false. +*/ + +/*! + \property ShaderEffectSource::hideSource + \brief the flag tells whether original source item content should be hidden. +*/ + +void ShaderEffectSource::setHideSource(bool hide) +{ + if (hide == m_hideSource) + return; + + m_hideSource = hide; + + emit hideSourceChanged(); + emit repaintRequired(); +} + +/*! + \qmlproperty enumeration ShaderEffectSource::wrapMode + + This property defines the wrap parameter for the source after it has been mapped as a texture. + + \list + \o WrapMode.ClampToEdge - Causes texturecoordinates to be clamped to the range [ 1/2*N , 1 - 1/2*N ], where N is the texture width. + \o WrapMode.RepeatHorizontally - Causes the integer part of the horizontal texturecoordinate to be ignored; the GL uses only the fractional part, thereby creating a horizontal repeating pattern. + \o WrapMode.RepeatVertically - Causes the integer part of the vertical texturecoordinate to be ignored; the GL uses only the fractional part, thereby creating a vertical repeating pattern. + \o WrapMode.Repeat - Causes the integer part of both the horizontal and vertical texturecoordinates to be ignored; the GL uses only the fractional part, thereby creating a repeating pattern. + \endlist + + The default value is ClampToEdge. + +*/ + +/*! + \property ShaderEffectSource::wrapMode + \brief the wrap parameter for the source after it has been mapped as a texture. +*/ + +void ShaderEffectSource::setWrapMode(WrapMode mode) +{ + if (mode == m_wrapMode) + return; + + m_wrapMode = mode; + updateBackbuffer(); + emit wrapModeChanged(); +} + +/*! + \qmlmethod ShaderEffectSource::grab() + + Repaints the source item content into the texture. + + This method is useful when ShaderEffectSource::live has been set to false and + the changes in the source item content is desired to be made visible for the shaders. + +*/ + +void ShaderEffectSource::grab() +{ + m_dirtyTexture = true; + emit repaintRequired(); +} + +void ShaderEffectSource::bind() const +{ + GLint filtering = smooth() ? GL_LINEAR : GL_NEAREST; + GLuint hwrap = (m_wrapMode == Repeat || m_wrapMode == RepeatHorizontally) ? GL_REPEAT : GL_CLAMP_TO_EDGE; + GLuint vwrap = (m_wrapMode == Repeat || m_wrapMode == RepeatVertically) ? GL_REPEAT : GL_CLAMP_TO_EDGE; + +#if !defined(QT_OPENGL_ES_2) + glEnable(GL_TEXTURE_2D); +#endif + if (m_fbo) { + glBindTexture(GL_TEXTURE_2D, m_fbo->texture()); + } else { + glBindTexture(GL_TEXTURE_2D, 0); + } + + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filtering); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, smooth() ? GL_LINEAR : GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, hwrap); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, vwrap); +} + +void ShaderEffectSource::refFromEffectItem() +{ + if (m_refs++ == 0) { + attachSourceItem(); + emit activeChanged(); + } +} + +void ShaderEffectSource::derefFromEffectItem() +{ + if (--m_refs == 0) { + detachSourceItem(); + emit activeChanged(); + } + Q_ASSERT(m_refs >= 0); +} + +void ShaderEffectSource::updateBackbuffer() +{ + if (!m_sourceItem) + return; + + // Multisampling is not (for now) supported. + QSize size = QSize(m_sourceItem->width(), m_sourceItem->height()); + if (!m_textureSize.isEmpty()) + size = m_textureSize; + + if (size.height() > 0 && size.width() > 0) { + QGLFramebufferObjectFormat format; + format.setAttachment(QGLFramebufferObject::CombinedDepthStencil); + format.setInternalTextureFormat(m_format); + + if (!m_fbo) { + m_fbo = new ShaderEffectBuffer(size, format); + } else { + if (m_fbo->size() != size || m_fbo->format().internalTextureFormat() != GLenum(m_format)) { + delete m_fbo; + m_fbo = 0; + m_fbo = new ShaderEffectBuffer(size, format); + } + } + } + + // Note that real update for the source content happens in shadereffect.cpp + m_dirtyTexture = false; +} + +void ShaderEffectSource::markSceneGraphDirty() +{ + m_dirtySceneGraph = true; + emit repaintRequired(); +} + +void ShaderEffectSource::markSourceSizeDirty() +{ + Q_ASSERT(m_sourceItem); + if (m_textureSize.isEmpty()) + updateSizeAndTexture(); + if (m_refs) + emit repaintRequired(); +} + +void ShaderEffectSource::updateSizeAndTexture() +{ + if (m_sourceItem) { + QSize size = m_textureSize; + if (size.isEmpty()) + size = QSize(m_sourceItem->width(), m_sourceItem->height()); + if (size.width() < 1) + size.setWidth(1); + if (size.height() < 1) + size.setHeight(1); + if (m_fbo && m_fbo->size() != size) { + delete m_fbo; + m_fbo = 0; + delete m_multisampledFbo; + m_fbo = m_multisampledFbo = 0; + } + if (m_size.width() != size.width()) { + m_size.setWidth(size.width()); + emit widthChanged(); + } + if (m_size.height() != size.height()) { + m_size.setHeight(size.height()); + emit heightChanged(); + } + m_dirtyTexture = true; + } else { + if (m_size.width() != 0) { + m_size.setWidth(0); + emit widthChanged(); + } + if (m_size.height() != 0) { + m_size.setHeight(0); + emit heightChanged(); + } + } +} + +void ShaderEffectSource::attachSourceItem() +{ + if (!m_sourceItem) + return; + + ShaderEffect *effect = qobject_cast<ShaderEffect*> (m_sourceItem->graphicsEffect()); + + if (!effect) { + effect = new ShaderEffect(); + m_sourceItem->setGraphicsEffect(effect); + } + + if (effect) + effect->addRenderTarget(this); + + m_sourceItem->update(); +} + +void ShaderEffectSource::detachSourceItem() +{ + if (!m_sourceItem) + return; + + ShaderEffect* effect = qobject_cast<ShaderEffect*> (m_sourceItem->graphicsEffect()); + + if (effect) + effect->removeRenderTarget(this); + + delete m_fbo; + m_fbo = 0; + + delete m_multisampledFbo; + m_multisampledFbo = 0; + + m_dirtyTexture = true; +} diff --git a/src/imports/shaders/shadereffectsource.h b/src/imports/shaders/shadereffectsource.h new file mode 100644 index 0000000..275e5b2 --- /dev/null +++ b/src/imports/shaders/shadereffectsource.h @@ -0,0 +1,158 @@ +/**************************************************************************** +** +** 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 QML Shaders plugin 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 SHADEREFFECTSOURCE_H +#define SHADEREFFECTSOURCE_H + +#include <QDeclarativeItem> +#include <QtOpenGL> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +class ShaderEffectBuffer; + +class ShaderEffectSource : public QDeclarativeItem +{ + Q_OBJECT + Q_PROPERTY(QDeclarativeItem *sourceItem READ sourceItem WRITE setSourceItem NOTIFY sourceItemChanged) + Q_PROPERTY(QRectF sourceRect READ sourceRect WRITE setSourceRect NOTIFY sourceRectChanged) + Q_PROPERTY(QSize textureSize READ textureSize WRITE setTextureSize NOTIFY textureSizeChanged) + Q_PROPERTY(bool live READ isLive WRITE setLive NOTIFY liveChanged) + Q_PROPERTY(bool hideSource READ hideSource WRITE setHideSource NOTIFY hideSourceChanged) + Q_PROPERTY(WrapMode wrapMode READ wrapMode WRITE setWrapMode NOTIFY wrapModeChanged) + Q_ENUMS(WrapMode) + Q_ENUMS(Format) + +public: + enum WrapMode { + ClampToEdge, + RepeatHorizontally, + RepeatVertically, + Repeat + }; + + enum Format { + Alpha = GL_ALPHA, + RGB = GL_RGB, + RGBA = GL_RGBA + }; + + ShaderEffectSource(QDeclarativeItem *parent = 0); + virtual ~ShaderEffectSource(); + + QDeclarativeItem *sourceItem() const { return m_sourceItem.data(); } + void setSourceItem(QDeclarativeItem *item); + + QRectF sourceRect() const { return m_sourceRect; }; + void setSourceRect(const QRectF &rect); + + QSize textureSize() const { return m_textureSize; } + void setTextureSize(const QSize &size); + + bool isLive() const { return m_live; } + void setLive(bool s); + + bool hideSource() const { return m_hideSource; } + void setHideSource(bool hide); + + WrapMode wrapMode() const { return m_wrapMode; }; + void setWrapMode(WrapMode mode); + + bool isActive() const { return m_refs; } + void bind() const; + void refFromEffectItem(); + void derefFromEffectItem(); + void updateBackbuffer(); + + ShaderEffectBuffer* fbo() { return m_fbo; } + bool isDirtyTexture() { return m_dirtyTexture; } + bool isMirrored() { return m_mirrored; } + + Q_INVOKABLE void grab(); + +Q_SIGNALS: + void sourceItemChanged(); + void sourceRectChanged(); + void textureSizeChanged(); + void formatChanged(); + void liveChanged(); + void hideSourceChanged(); + void activeChanged(); + void repaintRequired(); + void wrapModeChanged(); + +public Q_SLOTS: + void markSceneGraphDirty(); + void markSourceSizeDirty(); + +private: + void updateSizeAndTexture(); + void attachSourceItem(); + void detachSourceItem(); + +private: + QPointer<QDeclarativeItem> m_sourceItem; + WrapMode m_wrapMode; + QRectF m_sourceRect; + QSize m_textureSize; + Format m_format; + QSize m_size; + + ShaderEffectBuffer *m_fbo; + ShaderEffectBuffer *m_multisampledFbo; + int m_refs; + bool m_dirtyTexture : 1; + bool m_dirtySceneGraph : 1; + bool m_multisamplingSupported : 1; + bool m_checkedForMultisamplingSupport : 1; + bool m_live : 1; + bool m_hideSource : 1; + bool m_mirrored : 1; +}; + +QT_END_HEADER + +QT_END_NAMESPACE + + +#endif // SHADEREFFECTSOURCE_H diff --git a/src/imports/shaders/shaders.pro b/src/imports/shaders/shaders.pro new file mode 100644 index 0000000..d7a6275 --- /dev/null +++ b/src/imports/shaders/shaders.pro @@ -0,0 +1,38 @@ +TARGET = qmlshadersplugin +TARGETPATH = Qt/labs/shaders +include(../qimportbase.pri) + +QT += declarative opengl + +SOURCES += \ + qmlshadersplugin_plugin.cpp \ + shadereffect.cpp \ + shadereffectitem.cpp \ + shadereffectsource.cpp \ + scenegraph/qsggeometry.cpp \ + shadereffectbuffer.cpp + +HEADERS += \ + qmlshadersplugin_plugin.h \ + glfunctions.h \ + shadereffect.h \ + shadereffectitem.h \ + shadereffectsource.h \ + scenegraph/qsggeometry.h \ + shadereffectbuffer.h + +QTDIR_build:DESTDIR = $$QT_BUILD_TREE/imports/$$TARGETPATH +target.path = $$[QT_INSTALL_IMPORTS]/$$TARGETPATH + +qmldir.files += $$PWD/qmldir +qmldir.path += $$[QT_INSTALL_IMPORTS]/$$TARGETPATH + +symbian:{ + TARGET.UID3 = 0x20034907 + isEmpty(DESTDIR):importFiles.sources = qmlparticlesplugin$${QT_LIBINFIX}.dll qmldir + else:importFiles.sources = $$DESTDIR/qmlparticlesplugin$${QT_LIBINFIX}.dll qmldir + importFiles.path = $$QT_IMPORTS_BASE_DIR/$$TARGETPATH + DEPLOYMENT = importFiles +} + +INSTALLS += target qmldir |