97 lines
3.3 KiB
C++
97 lines
3.3 KiB
C++
/******************************************************************************
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QtAV: Multimedia framework based on Qt and FFmpeg
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Copyright (C) 2012-2017 Wang Bin <wbsecg1@gmail.com>
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* This file is part of QtAV (from 2016)
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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******************************************************************************/
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#ifndef QTAV_GEOMETRYRENDERER_H
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#define QTAV_GEOMETRYRENDERER_H
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#define REMOVE_GEOMETRY_RENDERER 0
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#if !(REMOVE_GEOMETRY_RENDERER)
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#include "Geometry.h"
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#define QT_VAO (QT_VERSION >= QT_VERSION_CHECK(5, 1, 0))
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//#define QT_VAO 0
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#if QT_VAO
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#include <QtGui/QOpenGLVertexArrayObject>
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#endif //QT_VAO
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# if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
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#include <QtGui/QOpenGLBuffer>
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#else
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#include <QtOpenGL/QGLBuffer>
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typedef QGLBuffer QOpenGLBuffer;
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#endif
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QT_BEGIN_NAMESPACE
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class QOpenGLShaderProgram;
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QT_END_NAMESPACE
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#define DEBUG_QT_VAO 0
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namespace FAV {
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/*!
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* \brief The GeometryRenderer class
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* TODO: support multiple geometry with same primitive (glPrimitiveRestartIndex, glDrawArraysInstanced, glDrawArraysInstanced, glMultiDrawArrays...)
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*/
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class Q_AV_EXPORT GeometryRenderer
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{
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public:
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// rendering features. Use all possible features as the default.
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static const int kVBO = 0x01;
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static const int kIBO = 0x02;
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static const int kVAO = 0x04;
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static const int kMapBuffer = 1<<16;
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// TODO: VAB, VBUM etc.
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GeometryRenderer();
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virtual ~GeometryRenderer() {}
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// call updateBuffer internally in bindBuffer if feature is changed
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void setFeature(int f, bool on);
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void setFeatures(int value);
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int features() const;
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int actualFeatures() const;
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bool testFeatures(int value) const;
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/*!
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* \brief updateGeometry
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* Update geometry buffer. Rebind VBO, IBO to VAO if geometry attributes is changed.
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* Assume attributes are bound in the order 0, 1, 2,....
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* Make sure the old geometry is not destroyed before this call because it will be used to compare with the new \l geo
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* \param geo null: release vao/vbo
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*/
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void updateGeometry(Geometry* geo = NULL);
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virtual void render();
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protected:
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void bindBuffers();
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void unbindBuffers();
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private:
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Geometry *g;
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int features_;
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int vbo_size, ibo_size; // QOpenGLBuffer.size() may get error 0x501 (vertex buffer)
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QOpenGLBuffer vbo; //VertexBuffer
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#if QT_VAO
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QOpenGLVertexArrayObject vao;
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#endif //QT_VAO
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QOpenGLBuffer ibo; // index buffer
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// geometry characteristic
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int stride;
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QVector<Attribute> attrib;
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};
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} //namespace FAV
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#endif //QTAV_GEOMETRYRENDERER_H
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#endif // #if !(REMOVE_GEOMETRY_RENDERER)
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