Index buffer is just a VBO with special target (GL_ELEMENT_ARRAY_BUFFER). More...
#include <OpenGl_IndexBuffer.hxx>
Inheritance diagram for OpenGl_IndexBuffer:
Public Member Functions | |
| OpenGl_IndexBuffer () | |
| Empty constructor. More... | |
| virtual unsigned int | GetTarget () const override |
| Return buffer object target (GL_ELEMENT_ARRAY_BUFFER). More... | |
| virtual void | DumpJson (Standard_OStream &theOStream, Standard_Integer theDepth=-1) const override |
| Dumps the content of me into the stream. More... | |
 Public Member Functions inherited from OpenGl_Buffer | |
| OpenGl_Buffer () | |
| Create uninitialized buffer. More... | |
| virtual | ~OpenGl_Buffer () |
| Destroy object. More... | |
| virtual bool | IsVirtual () const |
| Return TRUE if this is a virtual (for backward compatibility) VBO object. More... | |
| bool | IsValid () const |
| unsigned int | GetComponentsNb () const |
| Standard_Integer | GetElemsNb () const |
| void | SetElemsNb (Standard_Integer theNbElems) |
| Overrides the number of vertex attributes / number of vertexes. It is up to user specifying this number correct (e.g. below initial value)! More... | |
| unsigned int | GetDataType () const |
| Standard_Byte * | GetDataOffset () const |
| virtual bool | Create (const Handle< OpenGl_Context > &theGlCtx) |
| Creates buffer object name (id) if not yet generated. Data should be initialized by another method. More... | |
| virtual void | Release (OpenGl_Context *theGlCtx) override |
| Destroy object - will release GPU memory if any. More... | |
| virtual void | Bind (const Handle< OpenGl_Context > &theGlCtx) const |
| Bind this buffer object. More... | |
| virtual void | Unbind (const Handle< OpenGl_Context > &theGlCtx) const |
| Unbind this buffer object. More... | |
| bool | Init (const Handle< OpenGl_Context > &theGlCtx, const unsigned int theComponentsNb, const Standard_Integer theElemsNb, const float *theData) |
| Notice that buffer object will be unbound after this call. More... | |
| bool | Init (const Handle< OpenGl_Context > &theGlCtx, const unsigned int theComponentsNb, const Standard_Integer theElemsNb, const unsigned int *theData) |
| Notice that buffer object will be unbound after this call. More... | |
| bool | Init (const Handle< OpenGl_Context > &theGlCtx, const unsigned int theComponentsNb, const Standard_Integer theElemsNb, const unsigned short *theData) |
| Notice that buffer object will be unbound after this call. More... | |
| bool | Init (const Handle< OpenGl_Context > &theGlCtx, const unsigned int theComponentsNb, const Standard_Integer theElemsNb, const Standard_Byte *theData) |
| Notice that buffer object will be unbound after this call. More... | |
| bool | SubData (const Handle< OpenGl_Context > &theGlCtx, const Standard_Integer theElemFrom, const Standard_Integer theElemsNb, const float *theData) |
| Notice that buffer object will be unbound after this call. Function replaces portion of data within this buffer object using glBufferSubData(). The buffer object should be initialized before call. More... | |
| bool | GetSubData (const Handle< OpenGl_Context > &theGlCtx, const Standard_Integer theElemFrom, const Standard_Integer theElemsNb, float *theData) |
| Read back buffer sub-range. Notice that buffer object will be unbound after this call. Function reads portion of data from this buffer object using glGetBufferSubData(). More... | |
| bool | SubData (const Handle< OpenGl_Context > &theGlCtx, const Standard_Integer theElemFrom, const Standard_Integer theElemsNb, const unsigned int *theData) |
| Notice that buffer object will be unbound after this call. Function replaces portion of data within this buffer object using glBufferSubData(). The buffer object should be initialized before call. More... | |
| bool | GetSubData (const Handle< OpenGl_Context > &theGlCtx, const Standard_Integer theElemFrom, const Standard_Integer theElemsNb, unsigned int *theData) |
| Read back buffer sub-range. Notice that buffer object will be unbound after this call. Function reads portion of data from this buffer object using glGetBufferSubData(). More... | |
| bool | SubData (const Handle< OpenGl_Context > &theGlCtx, const Standard_Integer theElemFrom, const Standard_Integer theElemsNb, const unsigned short *theData) |
| Notice that buffer object will be unbound after this call. Function replaces portion of data within this buffer object using glBufferSubData(). The buffer object should be initialized before call. More... | |
| bool | GetSubData (const Handle< OpenGl_Context > &theGlCtx, const Standard_Integer theElemFrom, const Standard_Integer theElemsNb, unsigned short *theData) |
| Read back buffer sub-range. Notice that buffer object will be unbound after this call. Function reads portion of data from this buffer object using glGetBufferSubData(). More... | |
| bool | SubData (const Handle< OpenGl_Context > &theGlCtx, const Standard_Integer theElemFrom, const Standard_Integer theElemsNb, const Standard_Byte *theData) |
| Notice that buffer object will be unbound after this call. Function replaces portion of data within this buffer object using glBufferSubData(). The buffer object should be initialized before call. More... | |
| bool | GetSubData (const Handle< OpenGl_Context > &theGlCtx, const Standard_Integer theElemFrom, const Standard_Integer theElemsNb, Standard_Byte *theData) |
| Read back buffer sub-range. Notice that buffer object will be unbound after this call. Function reads portion of data from this buffer object using glGetBufferSubData(). More... | |
| virtual Standard_Size | EstimatedDataSize () const override |
| Returns estimated GPU memory usage for holding data without considering overheads and allocation alignment rules. More... | |
| virtual bool | init (const Handle< OpenGl_Context > &theGlCtx, const unsigned int theComponentsNb, const Standard_Integer theElemsNb, const void *theData, const unsigned int theDataType, const Standard_Integer theStride) |
| Initialize buffer with new data. More... | |
| bool | init (const Handle< OpenGl_Context > &theGlCtx, const unsigned int theComponentsNb, const Standard_Integer theElemsNb, const void *theData, const unsigned int theDataType) |
| Initialize buffer with new data. More... | |
| virtual bool | subData (const Handle< OpenGl_Context > &theGlCtx, const Standard_Integer theElemFrom, const Standard_Integer theElemsNb, const void *theData, const unsigned int theDataType) |
| Update part of the buffer with new data. More... | |
| virtual bool | getSubData (const Handle< OpenGl_Context > &theGlCtx, const Standard_Integer theElemFrom, const Standard_Integer theElemsNb, void *theData, const unsigned int theDataType) |
| Read back buffer sub-range. More... | |
| Public Member Functions inherited from OpenGl_Resource | |
| OpenGl_Resource () | |
| Empty constructor. More... | |
| virtual | ~OpenGl_Resource () |
| Destructor. Inheritors should call Clean (NULL) within it. More... | |
| Public Member Functions inherited from Standard_Transient | |
| Standard_Transient () | |
| Empty constructor. More... | |
| Standard_Transient (const Standard_Transient &) | |
| Copy constructor – does nothing. More... | |
| Standard_Transient & | operator= (const Standard_Transient &) |
| Assignment operator, needed to avoid copying reference counter. More... | |
| virtual | ~Standard_Transient () |
| Destructor must be virtual. More... | |
| virtual void | Delete () const |
| Memory deallocator for transient classes. More... | |
| virtual const opencascade::handle< Standard_Type > & | DynamicType () const |
| Returns a type descriptor about this object. More... | |
| Standard_Boolean | IsInstance (const opencascade::handle< Standard_Type > &theType) const |
| Returns a true value if this is an instance of Type. More... | |
| Standard_Boolean | IsInstance (const Standard_CString theTypeName) const |
| Returns a true value if this is an instance of TypeName. More... | |
| Standard_Boolean | IsKind (const opencascade::handle< Standard_Type > &theType) const |
| Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More... | |
| Standard_Boolean | IsKind (const Standard_CString theTypeName) const |
| Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More... | |
| Standard_Transient * | This () const |
| Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero. More... | |
| Standard_Integer | GetRefCount () const |
| Get the reference counter of this object. More... | |
| void | IncrementRefCounter () const |
| Increments the reference counter of this object. More... | |
| Standard_Integer | DecrementRefCounter () const |
| Decrements the reference counter of this object; returns the decremented value. More... | |
Additional Inherited Members | |
| Public Types inherited from Standard_Transient | |
| typedef void | base_type |
| Returns a type descriptor about this object. More... | |
| Static Public Member Functions inherited from OpenGl_Buffer | |
| static TCollection_AsciiString | FormatTarget (unsigned int theTarget) |
| Format VBO target enumeration value. More... | |
| static size_t | sizeOfGlType (unsigned int theType) |
| Static Public Member Functions inherited from Standard_Transient | |
| static const char * | get_type_name () |
| Returns a type descriptor about this object. More... | |
| static const opencascade::handle< Standard_Type > & | get_type_descriptor () |
| Returns type descriptor of Standard_Transient class. More... | |
| Static Public Attributes inherited from OpenGl_Buffer | |
| static const unsigned int | NO_BUFFER = 0 |
| Helpful constants. More... | |
| Protected Member Functions inherited from OpenGl_Buffer | |
| void | BindBufferBase (const Handle< OpenGl_Context > &theGlCtx, unsigned int theIndex) |
| Binds a buffer object to an indexed buffer target. Wrapper for glBindBufferBase(). More... | |
| void | UnbindBufferBase (const Handle< OpenGl_Context > &theGlCtx, unsigned int theIndex) |
| Unbinds a buffer object from an indexed buffer target. Wrapper for glBindBufferBase(). More... | |
| void | BindBufferRange (const Handle< OpenGl_Context > &theGlCtx, unsigned int theIndex, const intptr_t theOffset, const size_t theSize) |
| Binds a buffer object to an indexed buffer target with specified offset and size. Wrapper for glBindBufferRange(). More... | |
| Protected Attributes inherited from OpenGl_Buffer | |
| Standard_Byte * | myOffset |
| offset to data More... | |
| unsigned int | myBufferId |
| VBO name (index) More... | |
| unsigned int | myComponentsNb |
| Number of components per generic vertex attribute, must be 1, 2, 3, or 4. More... | |
| Standard_Integer | myElemsNb |
| Number of vertex attributes / number of vertices. More... | |
| unsigned int | myDataType |
| Data type (GL_FLOAT, GL_UNSIGNED_INT, GL_UNSIGNED_BYTE etc.) More... | |
Detailed Description
Index buffer is just a VBO with special target (GL_ELEMENT_ARRAY_BUFFER).
Constructor & Destructor Documentation
◆ OpenGl_IndexBuffer()
| OpenGl_IndexBuffer::OpenGl_IndexBuffer | ( | ) |
Empty constructor.
Member Function Documentation
◆ DumpJson()
|
overridevirtual |
Dumps the content of me into the stream.
Reimplemented from OpenGl_Buffer.
◆ GetTarget()
|
overridevirtual |
Return buffer object target (GL_ELEMENT_ARRAY_BUFFER).
Implements OpenGl_Buffer.
The documentation for this class was generated from the following file:
