Code/CryEngine/RenderDll/XRenderD3D9/GraphicsPipeline/ClipVolumes.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/PrimitiveRenderPass.h"
   7 #include "Common/FullscreenPass.h"
   8 //#include "Common/UtilityPasses.h"
   9
  10 #if !CRY_PLATFORM_ORBIS
  11         #define FEATURE_RENDER_CLIPVOLUME_GEOMETRY_SHADER
  12 #endif
  13
  14 class CClipVolumesStage : public CGraphicsPipelineStage
  15 {
  16 public:
  17         static const uint32 MaxDeferredClipVolumes = BIT_STENCIL_INSIDE_CLIPVOLUME - 1; // Keep in sync with MAX_CLIPVOLUMES in DeferredShading.cfx / ShadowBlur.cfx
  18
  19 public:
  20         CClipVolumesStage();
  21         virtual ~CClipVolumesStage();
  22
  23         CGpuBuffer* GetClipVolumeInfoBuffer          ()       { return &m_clipVolumeInfoBuf; }
  24         CTexture*   GetClipVolumeStencilVolumeTexture() const { return m_pClipVolumeStencilVolumeTex; }
  25
  26         bool        IsOutdoorVisible() const { CRY_ASSERT(m_bClipVolumesValid); return m_bOutdoorVisible; }
  27
  28         void Init();
  29         void Destroy();
  30         void Update() final;
  31         bool IsStageActive(EShaderRenderingFlags flags) const final
  32         {
  33                 if (flags & EShaderRenderingFlags::SHDF_FORWARD_MINIMAL)
  34                         return false;
  35
  36                 return true;
  37         }
  38
  39         void Prepare();
  40         void Execute();
  41
  42 public:
  43         struct SClipVolumeInfo
  44         {
  45                 float data;
  46         };
  47
  48         void GenerateClipVolumeInfo();
  49
  50 private:
  51         void PrepareVolumetricFog();
  52         void ExecuteVolumetricFog();
  53
  54 private:
  55         CPrimitiveRenderPass m_stencilPass;
  56         CPrimitiveRenderPass m_blendValuesPass;
  57         CFullscreenPass      m_stencilResolvePass;
  58
  59 #ifdef FEATURE_RENDER_CLIPVOLUME_GEOMETRY_SHADER
  60         CPrimitiveRenderPass m_volumetricStencilPass;
  61 #else
  62         std::vector<std::unique_ptr<CPrimitiveRenderPass>> m_volumetricStencilPassArray;
  63         std::vector<std::unique_ptr<CFullscreenPass>>      m_resolveVolumetricStencilPassArray;
  64 #endif
  65         std::vector<std::unique_ptr<CFullscreenPass>>      m_jitteredDepthPassArray;
  66
  67         CRenderPrimitive                m_stencilPrimitives[MaxDeferredClipVolumes * 2];
  68         CRenderPrimitive                m_blendPrimitives[MaxDeferredClipVolumes];
  69 #ifdef FEATURE_RENDER_CLIPVOLUME_GEOMETRY_SHADER
  70         CRenderPrimitive                m_stencilPrimitivesVolFog[MaxDeferredClipVolumes * 2];
  71 #endif
  72
  73         CRY_ALIGN(16) Vec4              m_clipVolumeShaderParams[MaxDeferredClipVolumes];
  74         uint32                          m_nShaderParamCount;
  75
  76         CGpuBuffer                      m_clipVolumeInfoBuf;
  77
  78         CTexture*                       m_pBlendValuesRT;
  79         CTexture*                       m_pDepthTarget;
  80
  81         CTexture*                       m_pClipVolumeStencilVolumeTex;
  82 #ifdef FEATURE_RENDER_CLIPVOLUME_GEOMETRY_SHADER
  83         CTexture*                       m_depthTargetVolFog;
  84 #else
  85         std::vector<CTexture*>          m_pClipVolumeStencilVolumeTexArray;
  86 #endif
  87         std::vector<ResourceViewHandle> m_depthTargetArrayVolFog;
  88
  89         int32                           m_cleared;
  90         float                           m_nearDepth;
  91         float                           m_raymarchDistance;
  92
  93         bool                            m_bClipVolumesValid;
  94         bool                            m_bBlendPassReady;
  95         bool                            m_bOutdoorVisible;
  96 };