OgreShadowVolumeExtrudeProgram.h

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/*
-----------------------------------------------------------------------------
This source file is part of OGRE
(Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2012 Torus Knot Software Ltd

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-----------------------------------------------------------------------------
*/

#ifndef __SHADOWVOLUMEEXTRUDEPROGRAM_H__
#define __SHADOWVOLUMEEXTRUDEPROGRAM_H__

#include "OgrePrerequisites.h"
#include "OgreLight.h"

namespace Ogre {
    class _OgreExport ShadowVolumeExtrudeProgram : public ShadowDataAlloc
    {
    private:
        static String mPointArbvp1;
        static String mPointVs_1_1;
        static String mPointVs_4_0;
        static String mPointVs_glsles;
        static String mDirArbvp1;
        static String mDirVs_1_1;
        static String mDirVs_4_0;
        static String mDirVs_glsles;
        // same as above, except the color is set to 1 to enable debug volumes to be seen
        static String mPointArbvp1Debug;
        static String mPointVs_1_1Debug;
        static String mPointVs_4_0Debug;
        static String mPointVs_glslesDebug;
        static String mDirArbvp1Debug;
        static String mDirVs_1_1Debug;
        static String mDirVs_4_0Debug;
        static String mDirVs_glslesDebug;
        
        static String mPointArbvp1Finite;
        static String mPointVs_1_1Finite;
        static String mPointVs_4_0Finite;
        static String mPointVs_glslesFinite;
        static String mDirArbvp1Finite;
        static String mDirVs_1_1Finite;
        static String mDirVs_4_0Finite;
        static String mDirVs_glslesFinite;
        // same as above, except the color is set to 1 to enable debug volumes to be seen
        static String mPointArbvp1FiniteDebug;
        static String mPointVs_1_1FiniteDebug;
        static String mPointVs_4_0FiniteDebug;
        static String mPointVs_glslesFiniteDebug;
        static String mDirArbvp1FiniteDebug;
        static String mDirVs_1_1FiniteDebug;
        static String mDirVs_4_0FiniteDebug;
        static String mDirVs_glslesFiniteDebug;

        static String mGeneralFs_4_0;
        static String mGeneralFs_glsles;

        static bool mInitialised;

    public:
#define OGRE_NUM_SHADOW_EXTRUDER_PROGRAMS 8
        enum Programs
        {
            // Point light extruder, infinite distance
            POINT_LIGHT = 0,
            // Point light extruder, infinite distance, debug mode
            POINT_LIGHT_DEBUG = 1,
            // Directional light extruder, infinite distance
            DIRECTIONAL_LIGHT = 2,
            // Directional light extruder, infinite distance, debug mode
            DIRECTIONAL_LIGHT_DEBUG = 3,
            // Point light extruder, finite distance
            POINT_LIGHT_FINITE = 4,
            // Point light extruder, finite distance, debug mode
            POINT_LIGHT_FINITE_DEBUG = 5,
            // Directional light extruder, finite distance
            DIRECTIONAL_LIGHT_FINITE = 6,
            // Directional light extruder, finite distance, debug mode
            DIRECTIONAL_LIGHT_FINITE_DEBUG = 7

        };
        static const String programNames[OGRE_NUM_SHADOW_EXTRUDER_PROGRAMS];
        static String frgProgramName;

        static void initialise(void);
        static void shutdown(void);
        static const String& getPointLightExtruderArbvp1(void) { return mPointArbvp1; }
        static const String& getPointLightExtruderVs_1_1(void) { return mPointVs_1_1; }
        static const String& getPointLightExtruderVs_4_0(void) { return mPointVs_4_0; }
        static const String& getPointLightExtruderVs_glsles(void) { return mPointVs_glsles; }
        static const String& getDirectionalLightExtruderArbvp1(void) { return mDirArbvp1; }
        static const String& getDirectionalLightExtruderVs_1_1(void) { return mDirVs_1_1; }
        static const String& getDirectionalLightExtruderVs_4_0(void) { return mDirVs_4_0; }
        static const String& getDirectionalLightExtruderVs_glsles(void) { return mDirVs_glsles; }

        static const String& getPointLightExtruderArbvp1Debug(void) { return mPointArbvp1Debug; }
        static const String& getPointLightExtruderVs_1_1Debug(void) { return mPointVs_1_1Debug; }
        static const String& getPointLightExtruderVs_4_0Debug(void) { return mPointVs_4_0Debug; }
        static const String& getPointLightExtruderVs_glslesDebug(void) { return mPointVs_glslesDebug; }
        static const String& getDirectionalLightExtruderArbvp1Debug(void) { return mDirArbvp1Debug; }
        static const String& getDirectionalLightExtruderVs_1_1Debug(void) { return mDirVs_1_1Debug; }
        static const String& getDirectionalLightExtruderVs_4_0Debug(void) { return mDirVs_4_0Debug; }
        static const String& getDirectionalLightExtruderVs_glslesDebug(void) { return mDirVs_glslesDebug; }
        static const String& getProgramSource(Light::LightTypes lightType, const String syntax, 
            bool finite, bool debug);

        static const String& getProgramName(Light::LightTypes lightType, bool finite, bool debug);


        static const String& getPointLightExtruderArbvp1Finite(void) { return mPointArbvp1Finite; }
        static const String& getPointLightExtruderVs_1_1Finite(void) { return mPointVs_1_1Finite; }
        static const String& getPointLightExtruderVs_4_0Finite(void) { return mPointVs_4_0Finite; }
        static const String& getPointLightExtruderVs_glslesFinite(void) { return mPointVs_glslesFinite; }
        static const String& getDirectionalLightExtruderArbvp1Finite(void) { return mDirArbvp1Finite; }
        static const String& getDirectionalLightExtruderVs_1_1Finite(void) { return mDirVs_1_1Finite; }
        static const String& getDirectionalLightExtruderVs_4_0Finite(void) { return mDirVs_4_0Finite; }
        static const String& getDirectionalLightExtruderVs_glslesFinite(void) { return mDirVs_glslesFinite; }

        static const String& getPointLightExtruderArbvp1FiniteDebug(void) { return mPointArbvp1FiniteDebug; }
        static const String& getPointLightExtruderVs_1_1FiniteDebug(void) { return mPointVs_1_1FiniteDebug; }
        static const String& getPointLightExtruderVs_4_0FiniteDebug(void) { return mPointVs_4_0FiniteDebug; }
        static const String& getPointLightExtruderVs_glslesFiniteDebug(void) { return mPointVs_glslesFiniteDebug; }
        static const String& getDirectionalLightExtruderArbvp1FiniteDebug(void) { return mDirArbvp1FiniteDebug; }
        static const String& getDirectionalLightExtruderVs_1_1FiniteDebug(void) { return mDirVs_1_1FiniteDebug; }
        static const String& getDirectionalLightExtruderVs_4_0FiniteDebug(void) { return mDirVs_4_0FiniteDebug; }
        static const String& getDirectionalLightExtruderVs_glslesFiniteDebug(void) { return mDirVs_glslesFiniteDebug; }

    };
}
#endif