T2SharedRenderBuffer< RenderBuffer > Class Template Reference

#include <T2SharedRenderBuffer_GL.h>

Classes
struct	SubBuffer
struct	SubBufferSort

Public Member Functions
	T2SharedRenderBuffer ()
	~T2SharedRenderBuffer ()
void	Create (RenderBuffer &&a_rRenderBuffer, TINT a_iSize)
void	Destroy ()
SubBuffer *	Allocate (TINT a_iSize)
void	Deallocate (SubBuffer *a_pAllocation)
RenderBuffer &	GetRenderBuffer ()
TBOOL	IsCreated () const

Detailed Description

template<class RenderBuffer>
class T2SharedRenderBuffer< RenderBuffer >

Definition at line 10 of file T2SharedRenderBuffer_GL.h.

Constructor & Destructor Documentation

T2SharedRenderBuffer()

template<class RenderBuffer>

T2SharedRenderBuffer< RenderBuffer >::T2SharedRenderBuffer ( )

inline

Definition at line 37 of file T2SharedRenderBuffer_GL.h.

    {
        m_iTotalSize = 0;
        m_iFreeSize  = 0;
    }

~T2SharedRenderBuffer()

template<class RenderBuffer>

T2SharedRenderBuffer< RenderBuffer >::~T2SharedRenderBuffer ( )

inline

Definition at line 43 of file T2SharedRenderBuffer_GL.h.

    {
        if ( IsCreated() )
            Destroy();
    }

Member Function Documentation

Allocate()

template<class RenderBuffer>

SubBuffer * T2SharedRenderBuffer< RenderBuffer >::Allocate ( TINT a_iSize )

inline

Definition at line 74 of file T2SharedRenderBuffer_GL.h.

    {
        if ( m_iFreeSize < a_iSize )
            return TNULL;
 
        TINT iPrevOffset     = 0;
        TINT iNextOffset     = 0;
        TINT iHoleSize       = m_iFreeSize;
        TINT iPrevSize       = 0;
        TINT iNumAllocations = m_vecAllocations.Size();
 
        // Find a hole that can fit the allocation
        SubBuffer* pPrevAllocation = TNULL;
        for ( TINT i = 0; i < iNumAllocations; i++ )
        {
            SubBuffer* pAllocation = m_vecAllocations[ i ];
 
            iHoleSize       = pAllocation->offset - iPrevOffset - iPrevSize;
            iPrevOffset     = pAllocation->offset;
            iPrevSize       = pAllocation->size;
            pPrevAllocation = pAllocation;
 
            if ( iHoleSize >= a_iSize )
                break;
 
            iNextOffset = iPrevOffset + pAllocation->size;
        }
 
        // If reached the end of the list, check if the allocation can fit at the end of the buffer
        if ( pPrevAllocation && iHoleSize < a_iSize && pPrevAllocation == m_vecAllocations[ iNumAllocations - 1 ] )
        {
            iHoleSize = m_iTotalSize - ( pPrevAllocation->offset + pPrevAllocation->size );
 
            if ( iHoleSize < a_iSize )
                return TNULL;
        }
 
        TASSERT( iHoleSize >= a_iSize );
 
        // Fill allocation info and store in the sorted vector
        SubBuffer* pSubBuffer = new SubBuffer();
        pSubBuffer->owner     = this;
        pSubBuffer->offset    = iNextOffset;
        pSubBuffer->size      = a_iSize;
        m_vecAllocations.Push( pSubBuffer );
 
        // Update number of free vertices
        m_iFreeSize -= a_iSize;
 
        return pSubBuffer;
    }

Create()

template<class RenderBuffer>

void T2SharedRenderBuffer< RenderBuffer >::Create ( RenderBuffer && a_rRenderBuffer, TINT a_iSize )

inline

Definition at line 49 of file T2SharedRenderBuffer_GL.h.

    {
        TASSERT( !IsCreated() );
 
        m_oRenderBuffer = std::move( a_rRenderBuffer );
        m_oRenderBuffer.Bind();
        m_oRenderBuffer.SetData( TNULL, a_iSize, GL_DYNAMIC_DRAW );
        m_oRenderBuffer.Unbind();
 
        m_iTotalSize = a_iSize;
        m_iFreeSize  = a_iSize;
    }

Deallocate()

template<class RenderBuffer>

void T2SharedRenderBuffer< RenderBuffer >::Deallocate ( SubBuffer * a_pAllocation )

inline

Definition at line 126 of file T2SharedRenderBuffer_GL.h.

    {
        if ( a_pAllocation )
        {
            m_vecAllocations.FindAndErase( a_pAllocation );
            m_iFreeSize += a_pAllocation->size;
 
            delete a_pAllocation;
        }
    }

Destroy()

template<class RenderBuffer>

void T2SharedRenderBuffer< RenderBuffer >::Destroy ( )

inline

Definition at line 62 of file T2SharedRenderBuffer_GL.h.

    {
        TASSERT( IsCreated() );
 
        GLuint uiId = m_oRenderBuffer.GetId();
        glDeleteBuffers( 1, &uiId );
        m_iTotalSize = 0;
        m_iFreeSize  = 0;
 
        m_oRenderBuffer.Clear();
    }

GetRenderBuffer()

template<class RenderBuffer>

RenderBuffer & T2SharedRenderBuffer< RenderBuffer >::GetRenderBuffer ( )

inline

Definition at line 137 of file T2SharedRenderBuffer_GL.h.

{ return m_oRenderBuffer; }

IsCreated()

template<class RenderBuffer>

TBOOL T2SharedRenderBuffer< RenderBuffer >::IsCreated ( ) const

inline

Definition at line 138 of file T2SharedRenderBuffer_GL.h.

{ return m_oRenderBuffer; }

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The documentation for this class was generated from the following file:

• D:/_dev/OpenBarnyard/Source/Toshi/Source/Platform/GL/T2SharedRenderBuffer_GL.h