Public API Reference

csgfx/lightsvcache.h

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/*
    Copyright (C) 2005 by Jorrit Tyberghein
              (C) 2005 by Frank Richter

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifndef __CS_CSGFX_SHADER_LIGHTSVCACHE_H__
#define __CS_CSGFX_SHADER_LIGHTSVCACHE_H__

#include "csextern.h"

#include "csutil/array.h"
#include "csutil/ref.h"
#include "iutil/strset.h"

class CS_CRYSTALSPACE_EXPORT csLightShaderVarCache
{
public:
  enum LightProperty
  {
    lightDiffuse = 0,
    lightSpecular,
    lightPosition,
    lightPositionCamera,
    lightPositionWorld,
    lightTransformCamera,
    lightTransformWorld,
    lightAttenuation,
    lightAttenuationTex,
    lightDirection,
    lightDirectionCamera,
    lightDirectionWorld,
    lightInnerFalloff,
    lightOuterFalloff,
    lightType,
    lightAttenuationMode,

    _lightCount
  };

  enum DefaultSV
  {
    varAmbient = 0,
    varLightCount,
    
    _varCount
  };
private:
  struct LightSvIdCacheEntry
  {
    csStringID ids[_lightCount];
  };
  csArray<LightSvIdCacheEntry> lightSVIdCache;
  csRef<iStringSet> strings;
  csStringID defaultVars[_varCount];
  
  void ClearDefVars ();
public:
  csLightShaderVarCache () { ClearDefVars(); }
  
  void SetStrings (iStringSet* strings);
  
  csStringID GetLightSVId (size_t num, LightProperty prop);
    
  csStringID GetDefaultSVId (DefaultSV var);
};

#endif // __CS_CSGFX_SHADER_LIGHTSVCACHE_H__

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