nevrax.org : docs

00001 
00007 /* Copyright, 2001 Nevrax Ltd.
00008  *
00009  * This file is part of NEVRAX NEL.
00010  * NEVRAX NEL is free software; you can redistribute it and/or modify
00011  * it under the terms of the GNU General Public License as published by
00012  * the Free Software Foundation; either version 2, or (at your option)
00013  * any later version.
00014 
00015  * NEVRAX NEL is distributed in the hope that it will be useful, but
00016  * WITHOUT ANY WARRANTY; without even the implied warranty of
00017  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
00018  * General Public License for more details.
00019 
00020  * You should have received a copy of the GNU General Public License
00021  * along with NEVRAX NEL; see the file COPYING. If not, write to the
00022  * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
00023  * MA 02111-1307, USA.
00024  */
00025 
00026 #include "std3d.h"
00027 
00028 #include "3d/vertex_buffer_hard.h"
00029 
00030 
00031 namespace NL3D 
00032 {
00033 
00034 // ***************************************************************************
00035 
00036 void    IVertexBufferHard::initFormat (uint16 vertexFormat, const uint8 *typeArray, uint32 numVertices)
00037 {
00038         // _NbVerts.
00039         _NbVerts= numVertices;
00040 
00041         // Compute format: flags / offsets, for each component.
00042         _VertexSize=0;
00043         _Flags=0;
00044 
00045         // For each values
00046         for (uint value=0; value<CVertexBuffer::NumValue; value++)
00047         {
00048                 // Flag for this value
00049                 uint flag=1<<value;
00050 
00051                 // Value used ?
00052                 if (vertexFormat & flag)
00053                 {
00054                         // Use it
00055                         _Flags|=flag;
00056 
00057                         // Value offset
00058                         _Offset[value]=_VertexSize;
00059 
00060                         // New vertex size
00061                         _VertexSize+=CVertexBuffer::SizeType[typeArray[value]];
00062 
00063                         // Setup the type
00064                         _Type[value]=typeArray[value];
00065                 }
00066         }
00067 }
00068 
00069 // ***************************************************************************
00070 
00071 uint8           IVertexBufferHard::getNumWeight () const
00072 {
00073         // Num weight
00074         switch (_Type[CVertexBuffer::Weight])
00075         {
00076         case CVertexBuffer::Float1:
00077                 return 1;
00078         case CVertexBuffer::Float2:
00079                 return 2;
00080         case CVertexBuffer::Float3:
00081                 return 3;
00082         case CVertexBuffer::Float4:
00083                 return 4;
00084         }
00085 
00086         // No weight
00087         return 0;
00088 }
00089 
00090 // ***************************************************************************
00091 
00092 } // NL3D
vertex_buffer_hard.cpp
