Torque3D/Engine/source/renderInstance/renderTexTargetBinManager.h

//-----------------------------------------------------------------------------
// Copyright (c) 2012 GarageGames, LLC
//
// 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 to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell 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 _TEXTARGETBIN_MGR_H_
#define _TEXTARGETBIN_MGR_H_

#ifndef _RENDERBINMANAGER_H_
#include "renderInstance/renderBinManager.h"
#endif
#ifndef _MATTEXTURETARGET_H_
#include "materials/matTextureTarget.h"
#endif

class ConditionerFeature;


class RenderTexTargetBinManager : public RenderBinManager
{
   typedef RenderBinManager Parent;

public:
   static const GFXFormat DefaultTargetFormat = GFXFormatR8G8B8A8;
   static const U32 DefaultTargetChainLength = 1;
   static const U32 DefaultTargetSize = 256;

   enum TargetSizeType
   {
      WindowSize = 0,
      WindowSizeScaled,
      FixedSize
   };

public:

   RenderTexTargetBinManager( const RenderInstType &ritype = RenderPassManager::RIT_Mesh,
                              F32 renderOrder = 1.0f,
                              F32 processAddOrder = 1.0f,
                              const GFXFormat targetFormat = DefaultTargetFormat, 
                              const Point2I &targetSize = Point2I(DefaultTargetSize, DefaultTargetSize),
                              const U32 targetChainLength = DefaultTargetChainLength);

   virtual ~RenderTexTargetBinManager();

   virtual bool setTargetSize(const Point2I &newTargetSize);

   virtual GFXTextureObject* getTargetTexture( U32 mrtIndex, S32 chainIndex = -1 ) const;

   /// Force a target update
   virtual bool updateTargets() { return _updateTargets(); }

   void setTargetFormatConsole(const S32 &fmt) { setTargetFormat(GFXFormat(fmt)); }
   virtual bool setTargetFormat(const GFXFormat &newTargetFormat);

   S32 getTargetFormatConsole() { return getTargetFormat(); }
   virtual const GFXFormat &getTargetFormat() const { return mTargetFormat; }

   virtual void setTargetChainLength(const U32 chainLength);
   virtual U32 getTargetChainLength() const { return mTargetChainLength; }

   DECLARE_CONOBJECT(RenderTexTargetBinManager);
   static void initPersistFields();
   virtual bool onAdd();

protected:

   NamedTexTarget mNamedTarget;

   GFXFormat mTargetFormat;
   Point2I mTargetSize;
   Point2F mTargetScale;
   
   //RectI mTargetViewport;
   TargetSizeType mTargetSizeType;

   U32 mTargetChainLength;
   U32 mTargetChainIdx;
   U32 mNumRenderTargets;
   GFXTextureTargetRef *mTargetChain;
   GFXTexHandle **mTargetChainTextures;

#ifndef TORQUE_SHIPPING
   bool m_NeedsOnPostRender;
#endif
   bool mPreserve;

   virtual bool _handleGFXEvent(GFXDevice::GFXDeviceEventType event);
   virtual GFXTextureTargetRef _getTextureTarget(const U32 idx = 0);

   /// Pushes the active render target, and sets itself as a render target. The
   /// target is then cleared using 'mTargetClearColor', viewport is set properly,
   /// and true is returned, and '_onPostRender' must be called after rendering
   /// is complete. If the return value is false, than '_onPostRender'
   /// should not be called. 
   ///
   /// @param preserve  If set to true, the contents of the current render target 
   //                   will be the same when _onPostRender is called. Otherwise
   //                   the contents are undefined on console platforms.
   virtual bool _onPreRender(SceneRenderState * state, bool preserve = false);

   /// Resolves the active render target, pops the render target from _onPreRender, and sets debug info. 
   virtual void _onPostRender();

   virtual bool _updateTargets();

   virtual bool _setupTargets();

   virtual void _teardownTargets();

   /// The callback used to get texture events.
   /// @see GFXTextureManager::addEventDelegate
   void _onTextureEvent( GFXTexCallbackCode code );
};

typedef RenderTexTargetBinManager::TargetSizeType RenderTexTargetSize;
DefineEnumType( RenderTexTargetSize );

#endif // _TEXTARGETBIN_MGR_H_