csgfx/shadervarblockalloc.h Source File (Crystal Space 2.0 Public API Reference)

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csgfx/shadervarblockalloc.h
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    00001 /*
    00002     Copyright (C) 2005 by Jorrit Tyberghein
    00003               (C) 2005 by Frank Richter
    00004
    00005     This library is free software; you can redistribute it and/or
    00006     modify it under the terms of the GNU Library General Public
    00007     License as published by the Free Software Foundation; either
    00008     version 2 of the License, or (at your option) any later version.
    00009
    00010     This library is distributed in the hope that it will be useful,
    00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
    00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00013     Library General Public License for more details.
    00014
    00015     You should have received a copy of the GNU Library General Public
    00016     License along with this library; if not, write to the Free
    00017     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
    00018 */
    00019
    00020 #ifndef __CS_CSGFX_SHADERVARBLOCKALLOC_H__
    00021 #define __CS_CSGFX_SHADERVARBLOCKALLOC_H__
    00022
    00023 #include "csextern.h"
    00024
    00025 #include "csutil/blockallocator.h"
    00026 #include "csutil/ref.h"
    00027 #include "csgfx/shadervar.h"
    00028
    00038 template<class ObjectDispose = csBlockAllocatorDisposeDelete<csShaderVariable> >
    00039 class csShaderVarBlockAlloc
    00040 {
    00041   struct BlockAllocatedSV : public csShaderVariable
    00042   {
    00043     csShaderVarBlockAlloc* allocator;
    00044     virtual void Delete() { allocator->blockAlloc.Free (this); }
    00045   };
    00046   friend struct BlockAllocatedSV;
    00047   csBlockAllocator<BlockAllocatedSV,
    00048     CS::Memory::AllocatorMalloc,
    00049     ObjectDispose> blockAlloc;
    00050 public:
    00056   csShaderVarBlockAlloc (size_t nelem = 32) :
    00057     blockAlloc(nelem) {}
    00064   csRef<csShaderVariable> Alloc ()
    00065   {
    00066     BlockAllocatedSV* sv = blockAlloc.Alloc ();
    00067     sv->allocator = this;
    00068     return csPtr<csShaderVariable> (sv);
    00069   }
    00070 };
    00071
    00072 #endif // __CS_CSGFX_SHADERVARBLOCKALLOC_H__