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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) 2000-2006 Torus Knot Software Ltd
Also see acknowledgements in Readme.html

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

This program 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt.

You may alternatively use this source under the terms of a specific version of
the OGRE Unrestricted License provided you have obtained such a license from
Torus Knot Software Ltd.
-----------------------------------------------------------------------------
*/
#ifndef __CompositionTargetPass_H__
#define __CompositionTargetPass_H__

#include "OgrePrerequisites.h"
#include "OgreIteratorWrappers.h"

namespace Ogre {
	/** Object representing one render to a RenderTarget or Viewport in the Ogre Composition
		framework.
	 */
    class _OgreExport CompositionTargetPass
    {
    public:
        CompositionTargetPass(CompositionTechnique *parent);
        ~CompositionTargetPass();
        
        /** Input mode of a TargetPass
        */
        enum InputMode
        {
            IM_NONE,        // No input
            IM_PREVIOUS     // Output of previous Composition in chain
        };
        typedef std::vector<CompositionPass *> Passes;
        typedef VectorIterator<Passes> PassIterator;
        
        /** Set input mode of this TargetPass
        */
        void setInputMode(InputMode mode);
        /** Get input mode */
        InputMode getInputMode() const;
        
        /** Set output local texture name */
        void setOutputName(const String &out);
        /** Get output local texture name */
        const String &getOutputName() const;
        
        /** Set "only initial" flag. This makes that this target pass is only executed initially 
            after the effect has been enabled.
        */
        void setOnlyInitial(bool value);
        /** Get "only initial" flag.
        */
        bool getOnlyInitial();
        
        /** Set the scene visiblity mask used by this pass 
        */
        void setVisibilityMask(uint32 mask);
        /** Get the scene visiblity mask used by this pass 
        */
        uint32 getVisibilityMask();

		/** Set the material scheme used by this target pass.
		@remarks
			Only applicable to targets that render the scene as
			one of their passes.
			@see Technique::setScheme.
		*/
		void setMaterialScheme(const String& schemeName);
		/** Get the material scheme used by this target pass.
		@remarks
			Only applicable to targets that render the scene as
			one of their passes.
			@see Technique::setScheme.
		*/
		const String& getMaterialScheme(void) const;
        
		/** Set whether shadows are enabled in this target pass.
		@remarks
			Only applicable to targets that render the scene as
			one of their passes.
		*/
		void setShadowsEnabled(bool enabled);
		/** Get whether shadows are enabled in this target pass.
		@remarks
			Only applicable to targets that render the scene as
			one of their passes.
		*/
		bool getShadowsEnabled(void) const;
        /** Set the scene LOD bias used by this pass. The default is 1.0,
            everything below that means lower quality, higher means higher quality.
        */
        void setLodBias(float bias);
        /** Get the scene LOD bias used by this pass 
        */
        float getLodBias();
        
        /** Create a new pass, and return a pointer to it.
        */
        CompositionPass *createPass();
        /** Remove a pass. It will also be destroyed.
        */
        void removePass(size_t idx);
        /** Get a pass.
        */
        CompositionPass *getPass(size_t idx);
        /** Get the number of passes.
        */
        size_t getNumPasses();
        
        /** Remove all passes
        */
        void removeAllPasses();
    
        /** Get an iterator over the Passes in this TargetPass. */
        PassIterator getPassIterator(void);
        
        /** Get parent object */
        CompositionTechnique *getParent();

        /** Determine if this target pass is supported on the current rendering device. 
         */
        bool _isSupported(void);

    private:
        /// Parent technique
        CompositionTechnique *mParent;
        /// Input name
        InputMode mInputMode;
        /// (local) output texture
        String mOutputName;
        /// Passes
        Passes mPasses;
        /// This target pass is only executed initially after the effect
        /// has been enabled.
        bool mOnlyInitial;
        /// Visibility mask for this render
        uint32 mVisibilityMask;
        /// LOD bias of this render
        float mLodBias;
		/// Material scheme name
		String mMaterialScheme;
		/// Shadows option
		bool mShadowsEnabled;
    };

}

#endif
OgreCompositionTargetPass.h
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