Engine directory for ticket #1

Engine/source/lighting/common/projectedShadow.h

@@ -0,0 +1,127 @@
+//-----------------------------------------------------------------------------
+// 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 _PROJECTEDSHADOW_H_
+#define _PROJECTEDSHADOW_H_
+
+#ifndef _DEPTHSORTLIST_H_
+#include "collision/depthSortList.h"
+#endif
+#ifndef _SCENEOBJECT_H_
+#include "scene/sceneObject.h"
+#endif
+#ifndef _TSSHAPEINSTANCE_H_
+#include "ts/tsShapeInstance.h"
+#endif
+#ifndef _LIGHTINGSYSTEM_SHADOWBASE_H_
+#include "lighting/common/shadowBase.h"
+#endif
+
+class ShapeBase;
+class LightInfo;
+class DecalData;
+class DecalInstance;
+class RenderPassManager;
+class PostEffect;
+class RenderMeshMgr;
+class CustomMaterial;
+class BaseMatInstance;
+class MaterialParameterHandle;
+
+
+GFX_DeclareTextureProfile( BLProjectedShadowProfile );
+GFX_DeclareTextureProfile( BLProjectedShadowZProfile );
+
+class ProjectedShadow : public ShadowBase
+{
+
+protected:
+
+
+   /// This parameter is used to
+   /// adjust the far plane out for our
+   /// orthographic render in order to 
+   /// force our object towards one end of the
+   /// the eye space depth range.
+   static F32 smDepthAdjust;
+
+   F32 mRadius;
+   MatrixF mWorldToLight;
+   U32 mLastRenderTime;
+
+   F32 mShadowLength;
+
+   F32 mScore;
+   bool mUpdateTexture;
+
+   Point3F mLastObjectScale;
+   Point3F mLastObjectPosition;
+   VectorF mLastLightDir;
+
+   DecalData *mDecalData;
+   DecalInstance *mDecalInstance;
+
+   SceneObject *mParentObject;
+   ShapeBase *mShapeBase;
+
+   MaterialParameterHandle *mCasterPositionSC;
+   MaterialParameterHandle *mShadowLengthSC;
+
+   static SimObjectPtr<RenderPassManager> smRenderPass;
+
+   static SimObjectPtr<PostEffect> smShadowFilter;
+
+   static RenderPassManager* _getRenderPass();
+
+   GFXTexHandle mShadowTexture;
+   GFXTextureTargetRef mRenderTarget;
+
+   GFXTextureObject* _getDepthTarget( U32 width, U32 height );
+   void _renderToTexture( F32 camDist, const TSRenderState &rdata );
+
+   bool _updateDecal( const SceneRenderState *sceneState );
+
+   void _calcScore( const SceneRenderState *state );
+ 
+   /// Returns a spotlight shadow material for use when
+   /// rendering meshes into the projected shadow.
+   static BaseMatInstance* _getShadowMaterial( BaseMatInstance *inMat );
+
+public:
+
+   /// @see DecalData
+   static float smFadeStartPixelSize;
+   static float smFadeEndPixelSize;
+
+   ProjectedShadow( SceneObject *object );
+   virtual ~ProjectedShadow();
+
+   bool shouldRender( const SceneRenderState *state );
+
+   void update( const SceneRenderState *state );
+   void render( F32 camDist, const TSRenderState &rdata );
+   U32 getLastRenderTime() const { return mLastRenderTime; }
+   const F32 getScore() const { return mScore; }
+
+};
+
+#endif // _PROJECTEDSHADOW_H_