VBO and heightmap

for(int x = 0; x < (width - 1); x++){ for(int y = 0; y < (height - 1); y++) {   //add index y * width + x   //add index y * width + (x + 1)   //add index (y + 1) * width + x   //add index (y + 1) * width + x   //add index y * width + (x + 1)   //add index (y + 1) * width + (x + 1) }}

for( nZ = 0; nZ < m_pTextureImage->sizeY; nZ += (int) flResolution )	{		for( nX = 0; nX < m_pTextureImage->sizeX; nX += (int) flResolution )		{			for( nTri = 0; nTri < 6; nTri++ )			{				// Using This Quick Hack, Figure The X,Z Position Of The Point				flX = (float) nX + ( ( nTri == 1 || nTri == 2 || nTri == 5 ) ? flResolution : 0.0f );				flZ = (float) nZ + ( ( nTri == 2 || nTri == 4 || nTri == 5 ) ? flResolution : 0.0f );				// Set The Data, Using PtHeight To Obtain The Y Value				m_pVertices[nIndex].x = flX - ( m_pTextureImage->sizeX / 2 );				m_pVertices[nIndex].y = PtHeight( (int) flX, (int) flZ ) *  flHeightScale;				m_pVertices[nIndex].z = flZ - ( m_pTextureImage->sizeY / 2 );				// Stretch The Texture Across The Entire Mesh				m_pTexCoords[nIndex].u = flX / m_pTextureImage->sizeX;				m_pTexCoords[nIndex].v = flZ / m_pTextureImage->sizeY;				// Increment Our Index				nIndex++;			}		}	}