int JRenderServer::ClearIB( int ibID )
{
if (ibID < 0 || ibID >= m_IBuffers.size()) return -1;
IDirect3DIndexBuffer8* pBuffer = m_IBuffers[ibID].m_pBuffer;
if (!pBuffer) return false;
BYTE* pData = NULL;
HRESULT hRes = pBuffer->Lock( 0, m_IBuffers[ibID].m_Size, &pData, D3DLOCK_DISCARD );
if (hRes != S_OK) return -1;
pBuffer->Unlock();
m_IBuffers[ibID].m_CurIteration++;
return m_IBuffers[ibID].m_CurIteration;
} // JRenderServer::ClearIB
BYTE* JRenderServer::LockIB( int ibID, int firstByte, int numBytes )
{
if (ibID < 0 || ibID >= m_IBuffers.size()) return NULL;
DWORD flags = 0;
if (m_IBuffers[ibID].m_bDynamic) flags |= D3DLOCK_NOOVERWRITE;
BYTE* pData = NULL;
IDirect3DIndexBuffer8* pBuffer = m_IBuffers[ibID].m_pBuffer;
if (!pBuffer) return NULL;
HRESULT hRes = pBuffer->Lock( firstByte, numBytes, &pData, flags );
if (hRes != S_OK) return NULL;
m_IBuffers[ibID].m_CurLastByte = firstByte + numBytes;
return (BYTE*)pData;
} // JRenderServer::LockIB
