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Diffstat (limited to 'src/declarative/scenegraph/coreapi/qsggeometry.cpp')
| -rw-r--r-- | src/declarative/scenegraph/coreapi/qsggeometry.cpp | 466 |
1 files changed, 0 insertions, 466 deletions
diff --git a/src/declarative/scenegraph/coreapi/qsggeometry.cpp b/src/declarative/scenegraph/coreapi/qsggeometry.cpp deleted file mode 100644 index 8661c9af93..0000000000 --- a/src/declarative/scenegraph/coreapi/qsggeometry.cpp +++ /dev/null @@ -1,466 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the Qt scene graph research project. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** 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. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qsggeometry.h" -#include "qsggeometry_p.h" - -#include <qopenglcontext.h> -#include <qopenglfunctions.h> -#include <private/qopenglextensions_p.h> - -QT_BEGIN_NAMESPACE - - -QSGGeometry::Attribute QSGGeometry::Attribute::create(int attributeIndex, int tupleSize, int primitiveType, bool isPrimitive) -{ - Attribute a = { attributeIndex, tupleSize, primitiveType, isPrimitive, 0 }; - return a; -} - - -/*! - Convenience function which returns attributes to be used for 2D solid - color drawing. - */ - -const QSGGeometry::AttributeSet &QSGGeometry::defaultAttributes_Point2D() -{ - static Attribute data[] = { - QSGGeometry::Attribute::create(0, 2, GL_FLOAT, true) - }; - 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[] = { - QSGGeometry::Attribute::create(0, 2, GL_FLOAT, true), - QSGGeometry::Attribute::create(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[] = { - QSGGeometry::Attribute::create(0, 2, GL_FLOAT, true), - QSGGeometry::Attribute::create(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_server_data(0) - , m_owns_data(false) - , m_index_usage_pattern(AlwaysUploadPattern) - , m_vertex_usage_pattern(AlwaysUploadPattern) -{ - Q_ASSERT(m_attributes.count > 0); - Q_ASSERT(m_attributes.stride > 0); - - Q_ASSERT_X(indexType != GL_UNSIGNED_INT - || static_cast<QOpenGLExtensions *>(QOpenGLContext::currentContext()->functions()) - ->hasOpenGLExtension(QOpenGLExtensions::ElementIndexUint), - "QSGGeometry::QSGGeometry", - "GL_UNSIGNED_INT is not supported, geometry will not render" - ); - - if (indexType != GL_UNSIGNED_BYTE - && indexType != GL_UNSIGNED_SHORT - && indexType != GL_UNSIGNED_INT) { - qFatal("QSGGeometry: Unsupported index type, %x.\n", indexType); - } - - - // Because allocate reads m_vertex_count, m_index_count and m_owns_data, these - // need to be set before calling allocate... - allocate(vertexCount, indexCount); -} - -/*! - \fn int QSGGeometry::sizeOfVertex() const - - Returns the size in bytes of one vertex. - - This value comes from the attributes. - */ - -/*! - \fn int QSGGeometry::sizeOfIndex() const - - Returns the byte size of the index type. - - This value is either 1 when index type is GL_UNSIGNED_BYTE or 2 when - index type is GL_UNSIGNED_SHORT. For Desktop OpenGL, GL_UNSIGNED_INT - with the value 4 is also supported. - */ - -QSGGeometry::~QSGGeometry() -{ - if (m_owns_data) - qFree(m_data); - - if (m_server_data) - delete m_server_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; - } - - // If we have associated vbo data we could potentially crash later if - // the old buffers are used with the new vertex and index count, so we force - // an update in the renderer in that case. This is really the users responsibility - // but it is cheap for us to enforce this, so why not... - if (m_server_data) { - markIndexDataDirty(); - markVertexDataDirty(); - } - -} - -/*! - 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.left(); - v[1].y = rect.bottom(); - - v[2].x = rect.right(); - v[2].y = rect.top(); - - 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.left(); - v[1].y = rect.bottom(); - v[1].tx = textureRect.left(); - v[1].ty = textureRect.bottom(); - - v[2].x = rect.right(); - v[2].y = rect.top(); - v[2].tx = textureRect.right(); - v[2].ty = textureRect.top(); - - v[3].x = rect.right(); - v[3].y = rect.bottom(); - v[3].tx = textureRect.right(); - v[3].ty = textureRect.bottom(); -} - - - -/*! - \enum QSGGeometry::DataPattern - - The DataPattern enum is used to specify the use pattern for the vertex - and index data in a geometry object. - - \value AlwaysUploadPattern The data is always uploaded. This means that - the user does not need to explicitly mark index and vertex data as - dirty after changing it. This is the default. - - \value DynamicPattern The data is modified repeatedly and drawn many times. - This is a hint that may provide better performance. When set - the user must make sure to mark the data as dirty after changing it. - - \value StaticPattern The data is modified once and drawn many times. This is - a hint that may provide better performance. When set the user must make sure - to mark the data as dirty after changing it. - */ - - -/*! - \fn QSGGeometry::DataPattern QSGGeometry::indexDataPattern() const - - Returns the usage pattern for indices in this geometry. The default - pattern is AlwaysUploadPattern. - */ - -/*! - Sets the usage pattern for indices to \a p. - - The default is AlwaysUploadPattern. When set to anything other than - the default, the user must call markIndexDataDirty() after changing - the index data. - */ - -void QSGGeometry::setIndexDataPattern(DataPattern p) -{ - m_index_usage_pattern = p; -} - - - - -/*! - \fn QSGGeometry::DataPattern QSGGeometry::vertexDataPattern() const - - Returns the usage pattern for vertices in this geometry. The default - pattern is AlwaysUploadPattern. - */ - -/*! - Sets the usage pattern for vertices to \a p. - - The default is AlwaysUploadPattern. When set to anything other than - the default, the user must call markVertexDataDirty() after changing - the vertex data. - */ - -void QSGGeometry::setVertexDataPattern(DataPattern p) -{ - m_vertex_usage_pattern = p; -} - - - - -/*! - Mark that the vertices in this geometry has changed and must be uploaded - again. - - This function only has an effect when the usage pattern for vertices is - StaticData and the renderer that renders this geometry uploads the geometry - into Vertex Buffer Objects (VBOs). - */ -void QSGGeometry::markIndexDataDirty() -{ - m_dirty_index_data = true; -} - - - -/*! - Mark that the vertices in this geometry has changed and must be uploaded - again. - - This function only has an effect when the usage pattern for vertices is - StaticData and the renderer that renders this geometry uploads the geometry - into Vertex Buffer Objects (VBOs). - */ -void QSGGeometry::markVertexDataDirty() -{ - m_dirty_vertex_data = true; -} - - -QT_END_NAMESPACE |