shadowMapPass.h

Engine/source/lighting/shadowMap/shadowMapPass.h

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Detailed Description

  1
  2//-----------------------------------------------------------------------------
  3// Copyright (c) 2012 GarageGames, LLC
  4//
  5// Permission is hereby granted, free of charge, to any person obtaining a copy
  6// of this software and associated documentation files (the "Software"), to
  7// deal in the Software without restriction, including without limitation the
  8// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  9// sell copies of the Software, and to permit persons to whom the Software is
 10// furnished to do so, subject to the following conditions:
 11//
 12// The above copyright notice and this permission notice shall be included in
 13// all copies or substantial portions of the Software.
 14//
 15// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 16// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 17// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 18// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 19// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 20// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 21// IN THE SOFTWARE.
 22//-----------------------------------------------------------------------------
 23
 24#ifndef _SHADOWMAPPASS_H_
 25#define _SHADOWMAPPASS_H_
 26
 27#ifndef _RENDERPASSMANAGER_H_
 28#include "renderInstance/renderPassManager.h"
 29#endif
 30#ifndef _RENDERMESHMGR_H_
 31#include "renderInstance/renderMeshMgr.h"
 32#endif
 33#ifndef _LIGHTINFO_H_
 34#include "lighting/lightInfo.h"
 35#endif
 36#ifndef _SHADOW_COMMON_H_
 37#include "lighting/shadowMap/shadowCommon.h"
 38#endif
 39
 40class RenderMeshMgr;
 41class LightShadowMap;
 42class LightManager;
 43class ShadowMapManager;
 44class BaseMatInstance;
 45class RenderObjectMgr;
 46class RenderTerrainMgr;
 47class PlatformTimer;
 48class ShadowRenderPassManager;
 49
 50/// ShadowMapPass, this is plugged into the SceneManager to generate 
 51/// ShadowMaps for the scene.
 52class ShadowMapPass
 53{
 54public:
 55
 56   ShadowMapPass() : mTimer(NULL), mLightManager(NULL), mShadowManager(NULL), mActiveLights(0), mPrevCamFov(90.0f) {}   // Only called by ConsoleSystem
 57   ShadowMapPass(LightManager* LightManager, ShadowMapManager* ShadowManager);
 58   virtual ~ShadowMapPass();
 59
 60   //
 61   // SceneRenderPass interface
 62   //
 63
 64   /// Called to render a scene.
 65   void render(   SceneManager *sceneGraph, 
 66                  const SceneRenderState *diffuseState, 
 67                  U32 objectMask );
 68
 69   /// Return the type of pass this is
 70   virtual const String& getPassType() const { return PassTypeName; };
 71
 72   /// Return our sort value. (Go first in order to have shadow maps available for RIT_Objects)
 73   virtual F32 getSortValue() const { return 0.0f; }
 74
 75   virtual bool geometryOnly() const { return true; }
 76
 77   static const String PassTypeName;
 78
 79
 80   /// Used to for debugging performance by disabling
 81   /// shadow updates and rendering.
 82   static bool smDisableShadows;
 83
 84   static bool smDisableShadowsEditor;
 85   static bool smDisableShadowsPref;
 86
 87   /// distance moved per frame before forcing a shadow update
 88   static F32 smShadowsTeleportDist;
 89   /// angle turned per frame before forcing a shadow update
 90   static F32 smShadowsTurnRate;
 91
 92private:
 93
 94   static U32 smActiveShadowMaps;
 95   static U32 smUpdatedShadowMaps;
 96   static U32 smNearShadowMaps;
 97   static U32 smShadowMapsDrawCalls;
 98   static U32 smShadowMapPolyCount;
 99   static U32 smRenderTargetChanges;
100   static U32 smShadowPoolTexturesCount;
101   static F32 smShadowPoolMemory;
102
103   /// The milliseconds alotted for shadow map updates
104   /// on a per frame basis.
105   static U32 smRenderBudgetMs;
106
107   PlatformTimer *mTimer;
108
109   LightInfoList mLights;
110   U32 mActiveLights;
111   SimObjectPtr<ShadowRenderPassManager> mShadowRPM;
112   LightManager* mLightManager;
113   ShadowMapManager* mShadowManager;
114   Point3F mPrevCamPos;
115   Point3F mPrevCamRot;
116   F32 mPrevCamFov;
117};
118
119class ShadowRenderPassManager : public RenderPassManager
120{
121   typedef RenderPassManager Parent;
122public:
123   ShadowRenderPassManager() : Parent() {}
124
125   /// Add a RenderInstance to the list
126   virtual void addInst( RenderInst *inst );
127};
128
129#endif // _SHADOWMAPPASS_H_
130