Code/CryEngine/RenderDll/XRenderD3D9/GraphicsPipeline/WaterRipples.h

   1 // Copyright 2001-2018 Crytek GmbH / Crytek Group. All rights reserved.
   2
   3 #pragma once
   4
   5 #include "Common/GraphicsPipelineStage.h"
   6 #include "Common/FullscreenPass.h"
   7 #include "Common/UtilityPasses.h"
   8
   9 class CWaterRipplesStage : public CGraphicsPipelineStage
  10 {
  11 public:
  12         CWaterRipplesStage();
  13         ~CWaterRipplesStage();
  14
  15         void Init() final;
  16         void Update() final;
  17
  18         void Execute();
  19
  20         Vec4 GetWaterRippleLookupParam() const
  21         {
  22                 return m_lookupParam;
  23         }
  24
  25         CTexture* GetWaterRippleTex() const;
  26
  27         bool IsVisible() const;
  28
  29 private:
  30         bool RefreshParameters();
  31         void ExecuteWaterRipples(CTexture* pTargetTex, const D3DViewPort& viewport);
  32         void UpdateAndDrawDebugInfo();
  33
  34 private:
  35         static const int32                         sVertexCount = 4;
  36         static const int32                         sTotalVertexCount = sVertexCount * SWaterRippleInfo::MaxWaterRipplesInScene;
  37         static const EDefaultInputLayouts::PreDefs sVertexFormat = EDefaultInputLayouts::P3F_C4B_T2F;
  38         static const size_t                        sVertexStride = sizeof(SVF_P3F_C4B_T2F);
  39
  40         typedef SVF_P3F_C4B_T2F SVertex;
  41
  42         struct SWaterRippleRecord
  43         {
  44                 SWaterRippleInfo info;
  45                 float            lifetime;
  46
  47                 SWaterRippleRecord(const SWaterRippleInfo& srcInfo, float srcLifetime)
  48                         : info(srcInfo)
  49                         , lifetime(srcLifetime)
  50                 {}
  51         };
  52
  53         struct SWaterRippleConstants
  54         {
  55                 Vec4 params;
  56         };
  57
  58 private:
  59         _smart_ptr<CTexture>          m_pTexWaterRipplesDDN; // xy: wave propagation normals, z: frame t-2, w: frame t-1
  60         _smart_ptr<CTexture>          m_pTempTexture;
  61
  62         CTypedConstantBuffer<SWaterRippleConstants, 256> m_constants;
  63
  64         CFullscreenPass               m_passSnapToCenter;
  65         CStretchRectPass              m_passCopy;
  66         CFullscreenPass               m_passWaterWavePropagation;
  67         CPrimitiveRenderPass          m_passAddWaterRipples;
  68         CMipmapGenPass                m_passMipmapGen;
  69
  70         CRenderPrimitive              m_ripplePrimitive[SWaterRippleInfo::MaxWaterRipplesInScene];
  71         buffer_handle_t               m_vertexBuffer; // stored all ripples' vertices.
  72
  73         SResourceRegionMapping        m_TempCopyParams;
  74
  75         ICVar*                        m_pCVarWaterRipplesDebug;
  76
  77         CCryNameTSCRC                 m_ripplesGenTechName;
  78         CCryNameTSCRC                 m_ripplesHitTechName;
  79
  80         int32                         m_frameID;
  81
  82         float                         m_lastSpawnTime;
  83         float                         m_lastUpdateTime;
  84
  85         float                         m_simGridSnapRange;
  86         Vec2                          m_simOrigin;
  87
  88         int32                         m_updateMask;
  89         Vec4                          m_shaderParam;
  90         Vec4                          m_lookupParam;
  91
  92         bool                          m_bInitializeSim;
  93         bool                          m_bSnapToCenter;
  94
  95         std::vector<SWaterRippleInfo> m_waterRipples;
  96         std::vector<SWaterRippleInfo> m_waterRipplesMGPU;
  97
  98 #if !defined(_RELEASE)
  99         std::vector<SWaterRippleRecord> m_debugRippleInfos;
 100 #endif
 101 };