345 lines
14 KiB
C++
345 lines
14 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
|
|
*
|
|
* This library is open source and may be redistributed and/or modified under
|
|
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
|
|
* (at your option) any later version. The full license is in LICENSE file
|
|
* included with this distribution, and on the openscenegraph.org website.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* OpenSceneGraph Public License for more details.
|
|
*/
|
|
|
|
#ifndef OSG_BUFFEROBJECT
|
|
#define OSG_BUFFEROBJECT 1
|
|
|
|
#include <osg/GL>
|
|
#include <osg/Object>
|
|
#include <osg/buffered_value>
|
|
|
|
#ifndef GL_ARB_vertex_buffer_object
|
|
|
|
#define GL_ARB_vertex_buffer_object
|
|
|
|
// for compatibility with gl.h headers that don't support VBO,
|
|
#if defined(_WIN64)
|
|
typedef __int64 GLintptrARB;
|
|
typedef __int64 GLsizeiptrARB;
|
|
#elif defined(__ia64__) || defined(__x86_64__)
|
|
typedef long int GLintptrARB;
|
|
typedef long int GLsizeiptrARB;
|
|
#else
|
|
typedef int GLintptrARB;
|
|
typedef int GLsizeiptrARB;
|
|
#endif
|
|
|
|
#define GL_ARRAY_BUFFER_ARB 0x8892
|
|
#define GL_ELEMENT_ARRAY_BUFFER_ARB 0x8893
|
|
#define GL_ARRAY_BUFFER_BINDING_ARB 0x8894
|
|
#define GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB 0x8895
|
|
#define GL_VERTEX_ARRAY_BUFFER_BINDING_ARB 0x8896
|
|
#define GL_NORMAL_ARRAY_BUFFER_BINDING_ARB 0x8897
|
|
#define GL_COLOR_ARRAY_BUFFER_BINDING_ARB 0x8898
|
|
#define GL_INDEX_ARRAY_BUFFER_BINDING_ARB 0x8899
|
|
#define GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB 0x889A
|
|
#define GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB 0x889B
|
|
#define GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB 0x889C
|
|
#define GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB 0x889D
|
|
#define GL_WEIGHT_ARRAY_BUFFER_BINDING_ARB 0x889E
|
|
#define GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB 0x889F
|
|
#define GL_STREAM_DRAW_ARB 0x88E0
|
|
#define GL_STREAM_READ_ARB 0x88E1
|
|
#define GL_STREAM_COPY_ARB 0x88E2
|
|
#define GL_STATIC_DRAW_ARB 0x88E4
|
|
#define GL_STATIC_READ_ARB 0x88E5
|
|
#define GL_STATIC_COPY_ARB 0x88E6
|
|
#define GL_DYNAMIC_DRAW_ARB 0x88E8
|
|
#define GL_DYNAMIC_READ_ARB 0x88E9
|
|
#define GL_DYNAMIC_COPY_ARB 0x88EA
|
|
#define GL_READ_ONLY_ARB 0x88B8
|
|
#define GL_WRITE_ONLY_ARB 0x88B9
|
|
#define GL_READ_WRITE_ARB 0x88BA
|
|
#define GL_BUFFER_SIZE_ARB 0x8764
|
|
#define GL_BUFFER_USAGE_ARB 0x8765
|
|
#define GL_BUFFER_ACCESS_ARB 0x88BB
|
|
#define GL_BUFFER_MAPPED_ARB 0x88BC
|
|
#define GL_BUFFER_MAP_POINTER_ARB 0x88BD
|
|
|
|
#endif
|
|
|
|
#ifndef GL_ARB_pixel_buffer_object
|
|
#define GL_PIXEL_PACK_BUFFER_ARB 0x88EB
|
|
#define GL_PIXEL_UNPACK_BUFFER_ARB 0x88EC
|
|
#define GL_PIXEL_PACK_BUFFER_BINDING_ARB 0x88ED
|
|
#define GL_PIXEL_UNPACK_BUFFER_BINDING_ARB 0x88EF
|
|
#endif
|
|
|
|
namespace osg
|
|
{
|
|
|
|
class State;
|
|
|
|
class OSG_EXPORT BufferObject : public Object
|
|
{
|
|
public:
|
|
|
|
BufferObject();
|
|
|
|
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
|
|
BufferObject(const BufferObject& bo,const CopyOp& copyop=CopyOp::SHALLOW_COPY);
|
|
|
|
virtual bool isSameKindAs(const Object* obj) const { return dynamic_cast<const BufferObject*>(obj)!=NULL; }
|
|
virtual const char* libraryName() const { return "osg"; }
|
|
virtual const char* className() const { return "BufferObject"; }
|
|
|
|
struct BufferEntry
|
|
{
|
|
BufferEntry(): dataSize(0),offset(0) {}
|
|
BufferEntry(const BufferEntry& be): modifiedCount(be.modifiedCount),dataSize(be.dataSize),offset(be.offset) {}
|
|
|
|
BufferEntry& operator = (const BufferEntry& be) { modifiedCount=be.modifiedCount; dataSize=be.dataSize; offset=be.offset; return *this; }
|
|
|
|
mutable buffered_value<unsigned int> modifiedCount;
|
|
mutable unsigned int dataSize;
|
|
mutable unsigned int offset;
|
|
};
|
|
|
|
inline bool isBufferObjectSupported(unsigned int contextID) const { return getExtensions(contextID,true)->isBufferObjectSupported(); }
|
|
inline bool isPBOSupported(unsigned int contextID) const { return getExtensions(contextID,true)->isPBOSupported(); }
|
|
|
|
inline GLuint& buffer(unsigned int contextID) const { return _bufferObjectList[contextID]; }
|
|
|
|
inline void bindBuffer(unsigned int contextID) const
|
|
{
|
|
Extensions* extensions = getExtensions(contextID,true);
|
|
extensions->glBindBuffer(_target,_bufferObjectList[contextID]);
|
|
}
|
|
|
|
inline void unbindBuffer(unsigned int contextID) const
|
|
{
|
|
Extensions* extensions = getExtensions(contextID,true);
|
|
extensions->glBindBuffer(_target,0);
|
|
}
|
|
|
|
inline void dirty() { _compiledList.setAllElementsTo(0); }
|
|
|
|
bool isDirty(unsigned int contextID) const { return _compiledList[contextID]==0; }
|
|
|
|
virtual void compileBuffer(State& state) const = 0;
|
|
|
|
/** 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 objexts
|
|
* for all graphics contexts. */
|
|
void releaseGLObjects(State* state=0) const;
|
|
|
|
|
|
/** Use deleteVertexBufferObject instead of glDeleteBuffers to allow
|
|
* OpenGL buffer objects to be cached until they can be deleted
|
|
* by the OpenGL context in which they were created, specified
|
|
* by contextID.*/
|
|
static void deleteBufferObject(unsigned int contextID,GLuint globj);
|
|
|
|
/** flush all the cached display list which need to be deleted
|
|
* in the OpenGL context related to contextID.*/
|
|
static void flushDeletedBufferObjects(unsigned int contextID,double /*currentTime*/, double& availableTime);
|
|
|
|
/** Extensions class which encapsulates the querying of extensions and
|
|
* associated function pointers, and provide convenience wrappers to
|
|
* check for the extensions or use the associated functions.*/
|
|
class OSG_EXPORT Extensions : public osg::Referenced
|
|
{
|
|
public:
|
|
Extensions(unsigned int contextID);
|
|
|
|
Extensions(const Extensions& rhs);
|
|
|
|
void lowestCommonDenominator(const Extensions& rhs);
|
|
|
|
void setupGLExtenions(unsigned int contextID);
|
|
|
|
bool isBufferObjectSupported() const { return _glGenBuffers!=0; }
|
|
bool isPBOSupported() const { return _isPBOSupported; }
|
|
|
|
void glGenBuffers (GLsizei n, GLuint *buffers) const;
|
|
void glBindBuffer (GLenum target, GLuint buffer) const;
|
|
void glBufferData (GLenum target, GLsizeiptrARB size, const GLvoid *data, GLenum usage) const;
|
|
void glBufferSubData (GLenum target, GLintptrARB offset, GLsizeiptrARB size, const GLvoid *data) const;
|
|
void glDeleteBuffers (GLsizei n, const GLuint *buffers) const;
|
|
GLboolean glIsBuffer (GLuint buffer) const;
|
|
void glGetBufferSubData (GLenum target, GLintptrARB offset, GLsizeiptrARB size, GLvoid *data) const;
|
|
GLvoid* glMapBuffer (GLenum target, GLenum access) const;
|
|
GLboolean glUnmapBuffer (GLenum target) const;
|
|
void glGetBufferParameteriv (GLenum target, GLenum pname, GLint *params) const;
|
|
void glGetBufferPointerv (GLenum target, GLenum pname, GLvoid* *params) const;
|
|
|
|
protected:
|
|
|
|
typedef void (APIENTRY * GenBuffersProc) (GLsizei n, GLuint *buffers);
|
|
typedef void (APIENTRY * BindBufferProc) (GLenum target, GLuint buffer);
|
|
typedef void (APIENTRY * BufferDataProc) (GLenum target, GLsizeiptrARB size, const GLvoid *data, GLenum usage);
|
|
typedef void (APIENTRY * BufferSubDataProc) (GLenum target, GLintptrARB offset, GLsizeiptrARB size, const GLvoid *data);
|
|
typedef void (APIENTRY * DeleteBuffersProc) (GLsizei n, const GLuint *buffers);
|
|
typedef GLboolean (APIENTRY * IsBufferProc) (GLuint buffer);
|
|
typedef void (APIENTRY * GetBufferSubDataProc) (GLenum target, GLintptrARB offset, GLsizeiptrARB size, GLvoid *data);
|
|
typedef GLvoid* (APIENTRY * MapBufferProc) (GLenum target, GLenum access);
|
|
typedef GLboolean (APIENTRY * UnmapBufferProc) (GLenum target);
|
|
typedef void (APIENTRY * GetBufferParameterivProc) (GLenum target, GLenum pname, GLint *params);
|
|
typedef void (APIENTRY * GetBufferPointervProc) (GLenum target, GLenum pname, GLvoid* *params);
|
|
|
|
GenBuffersProc _glGenBuffers;
|
|
BindBufferProc _glBindBuffer;
|
|
BufferDataProc _glBufferData;
|
|
BufferSubDataProc _glBufferSubData;
|
|
DeleteBuffersProc _glDeleteBuffers;
|
|
IsBufferProc _glIsBuffer;
|
|
GetBufferSubDataProc _glGetBufferSubData;
|
|
MapBufferProc _glMapBuffer;
|
|
UnmapBufferProc _glUnmapBuffer;
|
|
GetBufferParameterivProc _glGetBufferParameteriv;
|
|
GetBufferPointervProc _glGetBufferPointerv;
|
|
|
|
bool _isPBOSupported;
|
|
};
|
|
|
|
/** Function to call to get the extension of a specified context.
|
|
* If the Exentsion object for that context has not yet been created
|
|
* and the 'createIfNotInitalized' flag been set to false then returns NULL.
|
|
* If 'createIfNotInitalized' is true then the Extensions object is
|
|
* automatically created. However, in this case the extension object is
|
|
* only created with the graphics context associated with ContextID..*/
|
|
static Extensions* getExtensions(unsigned int contextID,bool createIfNotInitalized);
|
|
|
|
/** setExtensions allows users to override the extensions across graphics contexts.
|
|
* typically used when you have different extensions supported across graphics pipes
|
|
* but need to ensure that they all use the same low common denominator extensions.*/
|
|
static void setExtensions(unsigned int contextID,Extensions* extensions);
|
|
|
|
protected:
|
|
|
|
virtual ~BufferObject();
|
|
|
|
typedef osg::buffered_value<GLuint> GLObjectList;
|
|
typedef osg::buffered_value<unsigned int> CompiledList;
|
|
|
|
mutable GLObjectList _bufferObjectList;
|
|
mutable CompiledList _compiledList;
|
|
|
|
GLenum _target;
|
|
GLenum _usage;
|
|
mutable unsigned int _totalSize;
|
|
};
|
|
|
|
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);
|
|
|
|
typedef std::pair< BufferEntry, Array* > BufferEntryArrayPair;
|
|
typedef std::vector< BufferEntryArrayPair > BufferEntryArrayPairs;
|
|
|
|
unsigned int addArray(osg::Array* array);
|
|
void removeArray(osg::Array* array);
|
|
|
|
void setArray(unsigned int i, Array* array);
|
|
Array* getArray(unsigned int i) { return _bufferEntryArrayPairs[i].second; }
|
|
const Array* getArray(unsigned int i) const { return _bufferEntryArrayPairs[i].second; }
|
|
|
|
const GLvoid* getOffset(unsigned int i) const { return (const GLvoid*)(((char *)0)+(_bufferEntryArrayPairs[i].first.offset)); }
|
|
|
|
virtual void compileBuffer(State& state) const;
|
|
|
|
/** Resize any per context GLObject buffers to specified size. */
|
|
virtual void resizeGLObjectBuffers(unsigned int maxSize);
|
|
|
|
protected:
|
|
|
|
virtual ~VertexBufferObject();
|
|
|
|
BufferEntryArrayPairs _bufferEntryArrayPairs;
|
|
};
|
|
|
|
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);
|
|
|
|
typedef std::pair< BufferEntry, DrawElements* > BufferEntryDrawElementstPair;
|
|
typedef std::vector< BufferEntryDrawElementstPair > BufferEntryDrawElementsPairs;
|
|
|
|
unsigned int addDrawElements(osg::DrawElements* PrimitiveSet);
|
|
void removeDrawElements(osg::DrawElements* PrimitiveSet);
|
|
|
|
void setDrawElements(unsigned int i, DrawElements* PrimitiveSet);
|
|
DrawElements* getDrawElements(unsigned int i) { return _bufferEntryDrawElementsPairs[i].second; }
|
|
const DrawElements* getDrawElements(unsigned int i) const { return _bufferEntryDrawElementsPairs[i].second; }
|
|
|
|
const GLvoid* getOffset(unsigned int i) const { return (const GLvoid*)(((char *)0)+(_bufferEntryDrawElementsPairs[i].first.offset)); }
|
|
|
|
virtual void compileBuffer(State& state) const;
|
|
|
|
/** Resize any per context GLObject buffers to specified size. */
|
|
virtual void resizeGLObjectBuffers(unsigned int maxSize);
|
|
|
|
protected:
|
|
|
|
virtual ~ElementBufferObject();
|
|
|
|
BufferEntryDrawElementsPairs _bufferEntryDrawElementsPairs;
|
|
};
|
|
|
|
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);
|
|
|
|
typedef std::pair< BufferEntry, Image* > BufferEntryImagePair;
|
|
|
|
void setImage(osg::Image* image);
|
|
|
|
Image* getImage() { return _bufferEntryImagePair.second; }
|
|
const Image* getImage() const { return _bufferEntryImagePair.second; }
|
|
|
|
unsigned int offset() const { return _bufferEntryImagePair.first.offset; }
|
|
|
|
virtual void compileBuffer(State& state) const;
|
|
|
|
/** Resize any per context GLObject buffers to specified size. */
|
|
virtual void resizeGLObjectBuffers(unsigned int maxSize);
|
|
|
|
protected:
|
|
|
|
virtual ~PixelBufferObject();
|
|
|
|
BufferEntryImagePair _bufferEntryImagePair;
|
|
};
|
|
|
|
|
|
}
|
|
|
|
#endif
|