765 lines
28 KiB
C++
765 lines
28 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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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
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSG_BUFFEROBJECT
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#define OSG_BUFFEROBJECT 1
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#include <osg/GL>
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#include <osg/Object>
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#include <osg/buffered_value>
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#include <osg/FrameStamp>
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#include <list>
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#include <map>
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#ifndef GL_ARB_vertex_buffer_object
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#define GL_ARB_vertex_buffer_object
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// for compatibility with gl.h headers that don't support VBO,
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#if defined(_WIN64)
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typedef __int64 GLintptrARB;
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typedef __int64 GLsizeiptrARB;
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#elif defined(__ia64__) || defined(__x86_64__)
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typedef long int GLintptrARB;
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typedef long int GLsizeiptrARB;
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#else
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typedef int GLintptrARB;
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typedef int GLsizeiptrARB;
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#endif
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#define GL_ARRAY_BUFFER_ARB 0x8892
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#define GL_ELEMENT_ARRAY_BUFFER_ARB 0x8893
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#define GL_ARRAY_BUFFER_BINDING_ARB 0x8894
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#define GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB 0x8895
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#define GL_VERTEX_ARRAY_BUFFER_BINDING_ARB 0x8896
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#define GL_NORMAL_ARRAY_BUFFER_BINDING_ARB 0x8897
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#define GL_COLOR_ARRAY_BUFFER_BINDING_ARB 0x8898
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#define GL_INDEX_ARRAY_BUFFER_BINDING_ARB 0x8899
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#define GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB 0x889A
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#define GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB 0x889B
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#define GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB 0x889C
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#define GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB 0x889D
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#define GL_WEIGHT_ARRAY_BUFFER_BINDING_ARB 0x889E
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#define GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB 0x889F
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#define GL_STREAM_DRAW_ARB 0x88E0
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#define GL_STREAM_READ_ARB 0x88E1
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#define GL_STREAM_COPY_ARB 0x88E2
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#define GL_STATIC_DRAW_ARB 0x88E4
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#define GL_STATIC_READ_ARB 0x88E5
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#define GL_STATIC_COPY_ARB 0x88E6
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#define GL_DYNAMIC_DRAW_ARB 0x88E8
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#define GL_DYNAMIC_READ_ARB 0x88E9
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#define GL_DYNAMIC_COPY_ARB 0x88EA
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#define GL_READ_ONLY_ARB 0x88B8
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#define GL_WRITE_ONLY_ARB 0x88B9
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#define GL_READ_WRITE_ARB 0x88BA
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#define GL_BUFFER_SIZE_ARB 0x8764
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#define GL_BUFFER_USAGE_ARB 0x8765
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#define GL_BUFFER_ACCESS_ARB 0x88BB
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#define GL_BUFFER_MAPPED_ARB 0x88BC
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#define GL_BUFFER_MAP_POINTER_ARB 0x88BD
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#endif
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#ifndef GL_VERSION_1_5
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#define GL_STREAM_DRAW 0x88E0
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#define GL_STREAM_READ 0x88E1
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#define GL_STREAM_COPY 0x88E2
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#define GL_STATIC_DRAW 0x88E4
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#define GL_STATIC_READ 0x88E5
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#define GL_STATIC_COPY 0x88E6
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#define GL_DYNAMIC_DRAW 0x88E8
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#define GL_DYNAMIC_READ 0x88E9
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#define GL_DYNAMIC_COPY 0x88EA
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#endif
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#ifndef GL_VERSION_2_1
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#define GL_PIXEL_PACK_BUFFER 0x88EB
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#define GL_PIXEL_UNPACK_BUFFER 0x88EC
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#define GL_PIXEL_PACK_BUFFER_BINDING 0x88ED
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#define GL_PIXEL_UNPACK_BUFFER_BINDING 0x88EF
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#endif
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#ifndef GL_ARB_pixel_buffer_object
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#define GL_PIXEL_PACK_BUFFER_ARB 0x88EB
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#define GL_PIXEL_UNPACK_BUFFER_ARB 0x88EC
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#define GL_PIXEL_PACK_BUFFER_BINDING_ARB 0x88ED
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#define GL_PIXEL_UNPACK_BUFFER_BINDING_ARB 0x88EF
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#endif
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namespace osg
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{
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class State;
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class BufferData;
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class BufferObject;
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class BufferObjectProfile
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{
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public:
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BufferObjectProfile():
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_target(0),
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_usage(0),
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_size(0) {}
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BufferObjectProfile(GLenum target, GLenum usage, unsigned int size):
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_target(target),
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_usage(usage),
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_size(size) {}
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BufferObjectProfile(const BufferObjectProfile& bpo):
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_target(bpo._target),
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_usage(bpo._usage),
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_size(bpo._size) {}
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bool operator < (const BufferObjectProfile& rhs) const
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{
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if (_target < rhs._target) return true;
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else if (_target > rhs._target) return false;
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if (_usage < rhs._usage) return true;
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else if (_usage > rhs._usage) return false;
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return _size < rhs._size;
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}
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bool operator == (const BufferObjectProfile& rhs) const
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{
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return (_target == rhs._target) &&
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(_usage == rhs._usage) &&
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(_size == rhs._size);
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}
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void setProfile(GLenum target, GLenum usage, unsigned int size)
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{
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_target = target;
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_usage = usage;
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_size = size;
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}
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BufferObjectProfile& operator = (const BufferObjectProfile& rhs)
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{
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_target = rhs._target;
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_usage = rhs._usage;
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_size = rhs._size;
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return *this;
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}
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GLenum _target;
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GLenum _usage;
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GLenum _size;
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};
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// forward declare
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class GLBufferObjectSet;
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class GLBufferObjectManager;
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class OSG_EXPORT GLBufferObject : public Referenced
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{
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public:
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GLBufferObject(unsigned int contextID, BufferObject* bufferObject, unsigned int glObjectID=0);
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void setProfile(const BufferObjectProfile& profile) { _profile = profile; }
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const BufferObjectProfile& getProfile() const { return _profile; }
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void setBufferObject(BufferObject* bufferObject);
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BufferObject* getBufferObject() { return _bufferObject; }
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struct BufferEntry
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{
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BufferEntry(): modifiedCount(0),dataSize(0),offset(0),dataSource(0) {}
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BufferEntry(const BufferEntry& rhs):
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modifiedCount(rhs.modifiedCount),
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dataSize(rhs.dataSize),
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offset(rhs.offset),
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dataSource(rhs.dataSource) {}
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BufferEntry& operator = (const BufferEntry& rhs)
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{
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if (&rhs==this) return *this;
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modifiedCount = rhs.modifiedCount;
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dataSize = rhs.dataSize;
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offset = rhs.offset;
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dataSource = rhs.dataSource;
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return *this;
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}
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unsigned int modifiedCount;
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unsigned int dataSize;
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unsigned int offset;
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BufferData* dataSource;
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};
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inline unsigned int getContextID() const { return _contextID; }
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inline GLuint& getGLObjectID() { return _glObjectID; }
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inline GLuint getGLObjectID() const { return _glObjectID; }
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inline GLsizeiptrARB getOffset(unsigned int i) const { return _bufferEntries[i].offset; }
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inline void bindBuffer();
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inline void unbindBuffer()
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{
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_extensions->glBindBuffer(_profile._target,0);
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}
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inline bool isDirty() const { return _dirty; }
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void dirty() { _dirty = true; }
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void clear();
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void compileBuffer();
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void deleteGLObject();
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void assign(BufferObject* bufferObject);
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bool isPBOSupported() const { return _extensions->isPBOSupported(); }
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static GLBufferObject* createGLBufferObject(unsigned int contextID, const BufferObject* bufferObject);
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static void deleteAllBufferObjects(unsigned int contextID);
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static void discardAllBufferObjects(unsigned int contextID);
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static void flushAllDeletedBufferObjects(unsigned int contextID);
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static void discardAllDeletedBufferObjects(unsigned int contextID);
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static void flushDeletedBufferObjects(unsigned int contextID,double currentTime, double& availbleTime);
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static void releaseGLBufferObject(unsigned int contextID, GLBufferObject* to);
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/** Extensions class which encapsulates the querying of extensions and
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* associated function pointers, and provide convenience wrappers to
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* check for the extensions or use the associated functions.*/
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class OSG_EXPORT Extensions : public osg::Referenced
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{
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public:
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Extensions(unsigned int contextID);
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Extensions(const Extensions& rhs);
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void lowestCommonDenominator(const Extensions& rhs);
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void setupGLExtensions(unsigned int contextID);
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bool isBufferObjectSupported() const { return _glGenBuffers!=0; }
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bool isPBOSupported() const { return _isPBOSupported; }
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void glGenBuffers (GLsizei n, GLuint *buffers) const;
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void glBindBuffer (GLenum target, GLuint buffer) const;
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void glBufferData (GLenum target, GLsizeiptrARB size, const GLvoid *data, GLenum usage) const;
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void glBufferSubData (GLenum target, GLintptrARB offset, GLsizeiptrARB size, const GLvoid *data) const;
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void glDeleteBuffers (GLsizei n, const GLuint *buffers) const;
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GLboolean glIsBuffer (GLuint buffer) const;
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void glGetBufferSubData (GLenum target, GLintptrARB offset, GLsizeiptrARB size, GLvoid *data) const;
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GLvoid* glMapBuffer (GLenum target, GLenum access) const;
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GLboolean glUnmapBuffer (GLenum target) const;
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void glGetBufferParameteriv (GLenum target, GLenum pname, GLint *params) const;
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void glGetBufferPointerv (GLenum target, GLenum pname, GLvoid* *params) const;
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protected:
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typedef void (GL_APIENTRY * GenBuffersProc) (GLsizei n, GLuint *buffers);
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typedef void (GL_APIENTRY * BindBufferProc) (GLenum target, GLuint buffer);
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typedef void (GL_APIENTRY * BufferDataProc) (GLenum target, GLsizeiptrARB size, const GLvoid *data, GLenum usage);
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typedef void (GL_APIENTRY * BufferSubDataProc) (GLenum target, GLintptrARB offset, GLsizeiptrARB size, const GLvoid *data);
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typedef void (GL_APIENTRY * DeleteBuffersProc) (GLsizei n, const GLuint *buffers);
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typedef GLboolean (GL_APIENTRY * IsBufferProc) (GLuint buffer);
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typedef void (GL_APIENTRY * GetBufferSubDataProc) (GLenum target, GLintptrARB offset, GLsizeiptrARB size, GLvoid *data);
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typedef GLvoid* (GL_APIENTRY * MapBufferProc) (GLenum target, GLenum access);
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typedef GLboolean (GL_APIENTRY * UnmapBufferProc) (GLenum target);
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typedef void (GL_APIENTRY * GetBufferParameterivProc) (GLenum target, GLenum pname, GLint *params);
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typedef void (GL_APIENTRY * GetBufferPointervProc) (GLenum target, GLenum pname, GLvoid* *params);
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GenBuffersProc _glGenBuffers;
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BindBufferProc _glBindBuffer;
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BufferDataProc _glBufferData;
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BufferSubDataProc _glBufferSubData;
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DeleteBuffersProc _glDeleteBuffers;
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IsBufferProc _glIsBuffer;
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GetBufferSubDataProc _glGetBufferSubData;
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MapBufferProc _glMapBuffer;
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UnmapBufferProc _glUnmapBuffer;
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GetBufferParameterivProc _glGetBufferParameteriv;
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GetBufferPointervProc _glGetBufferPointerv;
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bool _isPBOSupported;
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};
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/** Function to call to get the extension of a specified context.
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* If the Extension object for that context has not yet been created
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* and the 'createIfNotInitalized' flag been set to false then returns NULL.
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* If 'createIfNotInitalized' is true then the Extensions object is
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* automatically created. However, in this case the extension object is
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* only created with the graphics context associated with ContextID..*/
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static Extensions* getExtensions(unsigned int contextID,bool createIfNotInitalized);
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/** setExtensions allows users to override the extensions across graphics contexts.
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* typically used when you have different extensions supported across graphics pipes
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* but need to ensure that they all use the same low common denominator extensions.*/
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static void setExtensions(unsigned int contextID,Extensions* extensions);
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protected:
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virtual ~GLBufferObject();
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unsigned int _contextID;
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GLuint _glObjectID;
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BufferObjectProfile _profile;
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unsigned int _allocatedSize;
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bool _dirty;
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typedef std::vector<BufferEntry> BufferEntries;
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BufferEntries _bufferEntries;
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BufferObject* _bufferObject;
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public:
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GLBufferObjectSet* _set;
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GLBufferObject* _previous;
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GLBufferObject* _next;
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unsigned int _frameLastUsed;
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public:
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Extensions* _extensions;
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};
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typedef std::list< ref_ptr<GLBufferObject> > GLBufferObjectList;
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class OSG_EXPORT GLBufferObjectSet : public Referenced
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{
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public:
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GLBufferObjectSet(GLBufferObjectManager* parent, const BufferObjectProfile& profile);
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void handlePendingOrphandedGLBufferObjects();
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void deleteAllGLBufferObjects();
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void discardAllGLBufferObjects();
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void flushAllDeletedGLBufferObjects();
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void discardAllDeletedGLBufferObjects();
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void flushDeletedGLBufferObjects(double currentTime, double& availableTime);
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GLBufferObject* takeFromOrphans(BufferObject* bufferObject);
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GLBufferObject* takeOrGenerate(BufferObject* bufferObject);
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void moveToBack(GLBufferObject* to);
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void addToBack(GLBufferObject* to);
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void orphan(GLBufferObject* to);
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void remove(GLBufferObject* to);
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void moveToSet(GLBufferObject* to, GLBufferObjectSet* set);
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unsigned int size() const { return _profile._size * _numOfGLBufferObjects; }
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bool makeSpace(unsigned int& size);
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bool checkConsistency() const;
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GLBufferObjectManager* getParent() { return _parent; }
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protected:
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virtual ~GLBufferObjectSet();
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OpenThreads::Mutex _mutex;
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GLBufferObjectManager* _parent;
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unsigned int _contextID;
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BufferObjectProfile _profile;
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unsigned int _numOfGLBufferObjects;
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GLBufferObjectList _orphanedGLBufferObjects;
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GLBufferObjectList _pendingOrphanedGLBufferObjects;
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GLBufferObject* _head;
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GLBufferObject* _tail;
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};
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class OSG_EXPORT GLBufferObjectManager : public osg::Referenced
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{
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public:
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GLBufferObjectManager(unsigned int contextID);
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unsigned int getContextID() const { return _contextID; }
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void setNumberActiveGLBufferObjects(unsigned int size) { _numActiveGLBufferObjects = size; }
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unsigned int& getNumberActiveGLBufferObjects() { return _numActiveGLBufferObjects; }
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unsigned int getNumberActiveGLBufferObjects() const { return _numActiveGLBufferObjects; }
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void setNumberOrphanedGLBufferObjects(unsigned int size) { _numOrphanedGLBufferObjects = size; }
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unsigned int& getNumberOrphanedGLBufferObjects() { return _numOrphanedGLBufferObjects; }
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unsigned int getNumberOrphanedGLBufferObjects() const { return _numOrphanedGLBufferObjects; }
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void setCurrGLBufferObjectPoolSize(unsigned int size) { _currGLBufferObjectPoolSize = size; }
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unsigned int& getCurrGLBufferObjectPoolSize() { return _currGLBufferObjectPoolSize; }
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unsigned int getCurrGLBufferObjectPoolSize() const { return _currGLBufferObjectPoolSize; }
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void setMaxGLBufferObjectPoolSize(unsigned int size);
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unsigned int getMaxGLBufferObjectPoolSize() const { return _maxGLBufferObjectPoolSize; }
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bool hasSpace(unsigned int size) const { return (_currGLBufferObjectPoolSize+size)<=_maxGLBufferObjectPoolSize; }
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bool makeSpace(unsigned int size);
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GLBufferObject* generateGLBufferObject(const osg::BufferObject* bufferObject);
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void handlePendingOrphandedGLBufferObjects();
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void deleteAllGLBufferObjects();
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void discardAllGLBufferObjects();
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void flushAllDeletedGLBufferObjects();
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void discardAllDeletedGLBufferObjects();
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void flushDeletedGLBufferObjects(double currentTime, double& availableTime);
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void releaseGLBufferObject(GLBufferObject* to);
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GLBufferObjectSet* getGLBufferObjectSet(const BufferObjectProfile& profile);
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void newFrame(osg::FrameStamp* fs);
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void resetStats();
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void reportStats();
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unsigned int& getFrameNumber() { return _frameNumber; }
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unsigned int& getNumberFrames() { return _numFrames; }
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unsigned int& getNumberDeleted() { return _numDeleted; }
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double& getDeleteTime() { return _deleteTime; }
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unsigned int& getNumberGenerated() { return _numGenerated; }
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double& getGenerateTime() { return _generateTime; }
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unsigned int& getNumberApplied() { return _numApplied; }
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double& getApplyTime() { return _applyTime; }
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static osg::ref_ptr<GLBufferObjectManager>& getGLBufferObjectManager(unsigned int contextID);
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protected:
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typedef std::map< BufferObjectProfile, osg::ref_ptr<GLBufferObjectSet> > GLBufferObjectSetMap;
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unsigned int _contextID;
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unsigned int _numActiveGLBufferObjects;
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unsigned int _numOrphanedGLBufferObjects;
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unsigned int _currGLBufferObjectPoolSize;
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unsigned int _maxGLBufferObjectPoolSize;
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GLBufferObjectSetMap _glBufferObjectSetMap;
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unsigned int _frameNumber;
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unsigned int _numFrames;
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unsigned int _numDeleted;
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double _deleteTime;
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unsigned int _numGenerated;
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double _generateTime;
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unsigned int _numApplied;
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double _applyTime;
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};
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class OSG_EXPORT BufferObject : public Object
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{
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public:
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BufferObject();
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/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
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BufferObject(const BufferObject& bo,const CopyOp& copyop=CopyOp::SHALLOW_COPY);
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virtual bool isSameKindAs(const Object* obj) const { return dynamic_cast<const BufferObject*>(obj)!=NULL; }
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virtual const char* libraryName() const { return "osg"; }
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virtual const char* className() const { return "BufferObject"; }
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void setTarget(GLenum target) { _profile._target = target; }
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GLenum getTarget() const { return _profile._target; }
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/** Set what type of usage the buffer object will have. Options are:
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* GL_STREAM_DRAW, GL_STREAM_READ, GL_STREAM_COPY,
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* GL_STATIC_DRAW, GL_STATIC_READ, GL_STATIC_COPY,
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* GL_DYNAMIC_DRAW, GL_DYNAMIC_READ, or GL_DYNAMIC_COPY.
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*/
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void setUsage(GLenum usage) { _profile._usage = usage; }
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/** Get the type of usage the buffer object has been set up for.*/
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GLenum getUsage() const { return _profile._usage; }
|
|
|
|
BufferObjectProfile& getProfile() { return _profile; }
|
|
const BufferObjectProfile& getProfile() const { return _profile; }
|
|
|
|
void dirty();
|
|
|
|
/** Resize any per context GLObject buffers to specified size. */
|
|
virtual void resizeGLObjectBuffers(unsigned int maxSize);
|
|
|
|
/** If State is non-zero, this function releases OpenGL objects for
|
|
* the specified graphics context. Otherwise, releases OpenGL objects
|
|
* for all graphics contexts. */
|
|
void releaseGLObjects(State* state=0) const;
|
|
|
|
unsigned int addBufferData(BufferData* bd);
|
|
void removeBufferData(unsigned int index);
|
|
void removeBufferData(BufferData* bd);
|
|
|
|
void setBufferData(unsigned int index, BufferData* bd);
|
|
BufferData* getBufferData(unsigned int index) { return _bufferDataList[index]; }
|
|
const BufferData* getBufferData(unsigned int index) const { return _bufferDataList[index]; }
|
|
|
|
unsigned int getNumBufferData() const { return _bufferDataList.size(); }
|
|
|
|
void setGLBufferObject(unsigned int contextID, GLBufferObject* glbo) { _glBufferObjects[contextID] = glbo; }
|
|
|
|
GLBufferObject* getGLBufferObject(unsigned int contextID) const { return _glBufferObjects[contextID].get(); }
|
|
|
|
GLBufferObject* getOrCreateGLBufferObject(unsigned int contextID) const
|
|
{
|
|
if (!_glBufferObjects[contextID]) _glBufferObjects[contextID] = GLBufferObject::createGLBufferObject(contextID, this);
|
|
return _glBufferObjects[contextID].get();
|
|
}
|
|
|
|
unsigned int computeRequiredBufferSize() const;
|
|
|
|
/** deprecated, provided for backwards compatibility.*/
|
|
static void deleteBufferObject(unsigned int contextID,GLuint globj);
|
|
|
|
protected:
|
|
|
|
~BufferObject();
|
|
|
|
typedef std::vector< BufferData* > BufferDataList;
|
|
typedef osg::buffered_object< osg::ref_ptr<GLBufferObject> > GLBufferObjects;
|
|
|
|
BufferObjectProfile _profile;
|
|
|
|
BufferDataList _bufferDataList;
|
|
|
|
mutable GLBufferObjects _glBufferObjects;
|
|
};
|
|
|
|
class OSG_EXPORT BufferData : public Object
|
|
{
|
|
public:
|
|
|
|
BufferData():
|
|
Object(true),
|
|
_modifiedCount(0),
|
|
_bufferIndex(0) {}
|
|
|
|
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
|
|
BufferData(const BufferData& bd,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
|
|
osg::Object(bd,copyop),
|
|
_modifiedCount(0),
|
|
_bufferIndex(0),
|
|
_modifiedCallback(bd._modifiedCallback) {}
|
|
|
|
virtual bool isSameKindAs(const Object* obj) const { return dynamic_cast<const BufferData*>(obj)!=NULL; }
|
|
virtual const char* libraryName() const { return "osg"; }
|
|
virtual const char* className() const { return "BufferData"; }
|
|
|
|
virtual const GLvoid* getDataPointer() const = 0;
|
|
virtual unsigned int getTotalDataSize() const = 0;
|
|
|
|
void setBufferObject(BufferObject* bufferObject);
|
|
BufferObject* getBufferObject() { return _bufferObject.get(); }
|
|
const BufferObject* getBufferObject() const { return _bufferObject.get(); }
|
|
|
|
void setBufferIndex(unsigned int index) { _bufferIndex = index; }
|
|
unsigned int getBufferIndex() const { return _bufferIndex; }
|
|
|
|
GLBufferObject* getGLBufferObject(unsigned int contextID) const { return _bufferObject.valid() ? _bufferObject->getGLBufferObject(contextID) : 0; }
|
|
GLBufferObject* getOrCreateGLBufferObject(unsigned int contextID) const { return _bufferObject.valid() ? _bufferObject->getOrCreateGLBufferObject(contextID) : 0; }
|
|
|
|
struct ModifiedCallback : public virtual osg::Object
|
|
{
|
|
ModifiedCallback() {}
|
|
|
|
ModifiedCallback(const ModifiedCallback&,const CopyOp&) {}
|
|
|
|
META_Object(osg,ModifiedCallback);
|
|
|
|
virtual void modified(BufferData* /*bufferData*/) const {}
|
|
};
|
|
|
|
void setModifiedCallback(ModifiedCallback* md) { _modifiedCallback = md; }
|
|
ModifiedCallback* getModifiedCallback() { return _modifiedCallback.get(); }
|
|
const ModifiedCallback* getModifiedCallback() const { return _modifiedCallback.get(); }
|
|
|
|
/** Dirty the primitive, which increments the modified count, to force buffer objects to update.
|
|
* If a ModifiedCallback is attached to this BufferData then the callback is called prior to the bufferObject's dirty is called. */
|
|
inline void dirty()
|
|
{
|
|
++_modifiedCount;
|
|
if (_modifiedCallback.valid()) _modifiedCallback->modified(this);
|
|
if (_bufferObject.valid()) _bufferObject->dirty();
|
|
}
|
|
|
|
/** Set the modified count value.*/
|
|
inline void setModifiedCount(unsigned int value) { _modifiedCount=value; }
|
|
|
|
/** Get modified count value.*/
|
|
inline unsigned int getModifiedCount() const { return _modifiedCount; }
|
|
|
|
protected:
|
|
|
|
virtual ~BufferData();
|
|
|
|
unsigned int _modifiedCount;
|
|
|
|
unsigned int _bufferIndex;
|
|
osg::ref_ptr<BufferObject> _bufferObject;
|
|
osg::ref_ptr<ModifiedCallback> _modifiedCallback;
|
|
};
|
|
|
|
|
|
class Array;
|
|
class OSG_EXPORT VertexBufferObject : public BufferObject
|
|
{
|
|
public:
|
|
|
|
VertexBufferObject();
|
|
|
|
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
|
|
VertexBufferObject(const VertexBufferObject& vbo,const CopyOp& copyop=CopyOp::SHALLOW_COPY);
|
|
|
|
META_Object(osg,VertexBufferObject);
|
|
|
|
unsigned int addArray(osg::Array* array);
|
|
void removeArray(osg::Array* array);
|
|
|
|
void setArray(unsigned int i, Array* array);
|
|
Array* getArray(unsigned int i);
|
|
const Array* getArray(unsigned int i) const;
|
|
|
|
protected:
|
|
virtual ~VertexBufferObject();
|
|
};
|
|
|
|
class DrawElements;
|
|
class OSG_EXPORT ElementBufferObject : public BufferObject
|
|
{
|
|
public:
|
|
|
|
ElementBufferObject();
|
|
|
|
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
|
|
ElementBufferObject(const ElementBufferObject& pbo,const CopyOp& copyop=CopyOp::SHALLOW_COPY);
|
|
|
|
META_Object(osg,ElementBufferObject);
|
|
|
|
unsigned int addDrawElements(osg::DrawElements* PrimitiveSet);
|
|
void removeDrawElements(osg::DrawElements* PrimitiveSet);
|
|
|
|
void setDrawElements(unsigned int i, DrawElements* PrimitiveSet);
|
|
DrawElements* getDrawElements(unsigned int i);
|
|
const DrawElements* getDrawElements(unsigned int i) const;
|
|
|
|
protected:
|
|
|
|
virtual ~ElementBufferObject();
|
|
};
|
|
|
|
class Image;
|
|
class OSG_EXPORT PixelBufferObject : public BufferObject
|
|
{
|
|
public:
|
|
|
|
PixelBufferObject(osg::Image* image=0);
|
|
|
|
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
|
|
PixelBufferObject(const PixelBufferObject& pbo,const CopyOp& copyop=CopyOp::SHALLOW_COPY);
|
|
|
|
META_Object(osg,PixelBufferObject);
|
|
|
|
void setImage(osg::Image* image);
|
|
|
|
Image* getImage();
|
|
const Image* getImage() const;
|
|
|
|
bool isPBOSupported(unsigned int contextID) const { return _glBufferObjects[contextID]->isPBOSupported(); }
|
|
|
|
protected:
|
|
|
|
virtual ~PixelBufferObject();
|
|
};
|
|
|
|
/**
|
|
* This object represent a general class of pixel buffer objects,
|
|
* which are capable of allocating buffer object (memory)
|
|
* on the GPU. The memory can then be used either for CPU-GPU
|
|
* pixel transfer or directly for GPU-GPU transfer, without CPU intervention.
|
|
**/
|
|
class OSG_EXPORT PixelDataBufferObject : public BufferObject
|
|
{
|
|
public:
|
|
PixelDataBufferObject();
|
|
PixelDataBufferObject(const PixelDataBufferObject& pbo, const CopyOp& copyop=CopyOp::SHALLOW_COPY);
|
|
|
|
META_Object(osg, PixelDataBufferObject);
|
|
|
|
//! Set new size of the buffer object. This will reallocate the memory on the next compile
|
|
inline void setDataSize(unsigned int size) { _profile._size = size; dirty(); }
|
|
|
|
//! Get data size of the used buffer
|
|
inline unsigned int getDataSize() const { return _profile._size; }
|
|
|
|
//! Compile the buffer (reallocate the memory if buffer is dirty)
|
|
virtual void compileBuffer(State& state) const;
|
|
|
|
//! Bind the buffer in read mode, which means that data can be downloaded from the buffer (note: GL_PIXEL_UNPACK_BUFFER_ARB)
|
|
virtual void bindBufferInReadMode(State& state);
|
|
|
|
//! Bind the buffer in write mode, which means following OpenGL instructions will write data into the buffer (note: GL_PIXEL_PACK_BUFFER_ARB)
|
|
virtual void bindBufferInWriteMode(State& state);
|
|
|
|
//! Unbind the buffer
|
|
virtual void unbindBuffer(unsigned int contextID) const;
|
|
|
|
/** Resize any per context GLObject buffers to specified size. */
|
|
virtual void resizeGLObjectBuffers(unsigned int maxSize);
|
|
|
|
enum Mode
|
|
{
|
|
//! A normal mode of this data buffer
|
|
NONE = 0,
|
|
|
|
//! Buffer is in read mode (@see bindBufferInReadMode)
|
|
READ = 1,
|
|
|
|
//! Buffer is in write mode (@see bindBufferInWriteMode)
|
|
WRITE = 2
|
|
};
|
|
|
|
Mode getMode(unsigned int contextID) const { return (Mode)_mode[contextID]; }
|
|
|
|
protected:
|
|
|
|
virtual ~PixelDataBufferObject();
|
|
|
|
typedef osg::buffered_value<unsigned int> ModeList;
|
|
|
|
mutable ModeList _mode;
|
|
|
|
};
|
|
|
|
inline void GLBufferObject::bindBuffer()
|
|
{
|
|
_extensions->glBindBuffer(_profile._target,_glObjectID);
|
|
if (_set) _set->moveToBack(this);
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|