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// This code contains NVIDIA Confidential Information and is disclosed
// under the Mutual Non-Disclosure Agreement.
//
// Notice
// ALL NVIDIA DESIGN SPECIFICATIONS AND CODE ("MATERIALS") ARE PROVIDED "AS IS" NVIDIA MAKES
// NO REPRESENTATIONS, WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
// THE MATERIALS, AND EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF NONINFRINGEMENT,
// MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
//
// NVIDIA Corporation assumes no responsibility for the consequences of use of such
// information or for any infringement of patents or other rights of third parties that may
// result from its use. No license is granted by implication or otherwise under any patent
// or patent rights of NVIDIA Corporation. No third party distribution is allowed unless
// expressly authorized by NVIDIA. Details are subject to change without notice.
// This code supersedes and replaces all information previously supplied.
// NVIDIA Corporation products are not authorized for use as critical
// components in life support devices or systems without express written approval of
// NVIDIA Corporation.
//
// Copyright (c) 2003 - 2016 NVIDIA Corporation. All rights reserved.
//
// NVIDIA Corporation and its licensors retain all intellectual property and proprietary
// rights in and to this software and related documentation and any modifications thereto.
// Any use, reproduction, disclosure or distribution of this software and related
// documentation without an express license agreement from NVIDIA Corporation is
// strictly prohibited.
//
#ifndef CONTEXT_COMMON_H
#define CONTEXT_COMMON_H
////////////////////////////////////////////////////////////////////////////////
#include <Nv/VolumetricLighting/NvVolumetricLighting.h>
#include "common.h"
/*==============================================================================
Forward Declarations
==============================================================================*/
#pragma warning(disable: 4100)
////////////////////////////////////////////////////////////////////////////////
namespace Nv { namespace VolumetricLighting {
////////////////////////////////////////////////////////////////////////////////
/*==============================================================================
Constants
==============================================================================*/
const uint32_t MAX_JITTER_STEPS = 8;
// These need to match the values in ComputeLightLUT_CS.hlsl
const uint32_t LIGHT_LUT_DEPTH_RESOLUTION = 128;
const uint32_t LIGHT_LUT_WDOTV_RESOLUTION = 512;
/*==============================================================================
Base Context Implementation
==============================================================================*/
class ContextImp_Common
{
public:
// Clean up common resources
virtual ~ContextImp_Common() {};
//--------------------------------------------------------------------------
// API Hooks
Status BeginAccumulation(PlatformRenderCtx renderCtx, PlatformShaderResource sceneDepth, ViewerDesc const* pViewerDesc, MediumDesc const* pMediumDesc, DebugFlags debugFlags);
Status RenderVolume(PlatformRenderCtx renderCtx, PlatformShaderResource shadowMap, ShadowMapDesc const* pShadowMapDesc, LightDesc const* pLightDesc, VolumeDesc const* pVolumeDesc);
Status EndAccumulation(PlatformRenderCtx renderCtx);
Status ApplyLighting(PlatformRenderCtx renderCtx, PlatformRenderTarget sceneTarget, PlatformShaderResource sceneDepth, PostprocessDesc const* pPostprocessDesc);
protected:
//--------------------------------------------------------------------------
// Implementation Stubs
// BeginAccumulation
virtual Status BeginAccumulation_Start(PlatformRenderCtx renderCtx, PlatformShaderResource sceneDepth, ViewerDesc const* pViewerDesc, MediumDesc const* pMediumDesc) = 0;
virtual Status BeginAccumulation_UpdateMediumLUT(PlatformRenderCtx renderCtx) = 0;
virtual Status BeginAccumulation_CopyDepth(PlatformRenderCtx renderCtx, PlatformShaderResource sceneDepth) = 0;
virtual Status BeginAccumulation_End(PlatformRenderCtx renderCtx, PlatformShaderResource sceneDepth, ViewerDesc const* pViewerDesc, MediumDesc const* pMediumDesc) = 0;
// RenderVolume
virtual Status RenderVolume_Start(PlatformRenderCtx renderCtx, PlatformShaderResource shadowMap, ShadowMapDesc const* pShadowMapDesc, LightDesc const* pLightDesc, VolumeDesc const* pVolumeDesc) = 0;
virtual Status RenderVolume_DoVolume_Directional(PlatformRenderCtx renderCtx, PlatformShaderResource shadowMap, ShadowMapDesc const* pShadowMapDesc, LightDesc const* pLightDesc, VolumeDesc const* pVolumeDesc) = 0;
virtual Status RenderVolume_DoVolume_Spotlight(PlatformRenderCtx renderCtx, PlatformShaderResource shadowMap, ShadowMapDesc const* pShadowMapDesc, LightDesc const* pLightDesc, VolumeDesc const* pVolumeDesc) = 0;
virtual Status RenderVolume_DoVolume_Omni(PlatformRenderCtx renderCtx, PlatformShaderResource shadowMap, ShadowMapDesc const* pShadowMapDesc, LightDesc const* pLightDesc, VolumeDesc const* pVolumeDesc) = 0;
virtual Status RenderVolume_End(PlatformRenderCtx renderCtx, PlatformShaderResource shadowMap, ShadowMapDesc const* pShadowMapDesc, LightDesc const* pLightDesc, VolumeDesc const* pVolumeDesc) = 0;
// EndAccumulation
virtual Status EndAccumulation_Imp(PlatformRenderCtx renderCtx) = 0;
// ApplyLighting
virtual Status ApplyLighting_Start(PlatformRenderCtx renderCtx, PlatformRenderTarget sceneTarget, PlatformShaderResource sceneDepth, PostprocessDesc const* pPostprocessDesc) = 0;
virtual Status ApplyLighting_Resolve(PlatformRenderCtx renderCtx, PostprocessDesc const* pPostprocessDesc) = 0;
virtual Status ApplyLighting_TemporalFilter(PlatformRenderCtx renderCtx, PlatformShaderResource sceneDepth, PostprocessDesc const* pPostprocessDesc) = 0;
virtual Status ApplyLighting_Composite(PlatformRenderCtx renderCtx, PlatformRenderTarget sceneTarget, PlatformShaderResource sceneDepth, PostprocessDesc const* pPostprocessDesc) = 0;
virtual Status ApplyLighting_End(PlatformRenderCtx renderCtx, PlatformRenderTarget sceneTarget, PlatformShaderResource sceneDepth, PostprocessDesc const* pPostprocessDesc) = 0;
//--------------------------------------------------------------------------
// Constructors
// Protected constructor - Should only ever instantiate children
ContextImp_Common() {};
// Call this from base-class for actual initialization
ContextImp_Common(const ContextDesc * pContextDesc);
//--------------------------------------------------------------------------
// Helper functions
NvVec2 getJitter() const;
uint32_t getOutputBufferWidth() const;
uint32_t getOutputBufferHeight() const;
uint32_t getOutputViewportWidth() const;
uint32_t getOutputViewportHeight() const;
uint32_t getOutputSampleCount() const;
float getInternalScale() const;
uint32_t getInternalBufferWidth() const;
uint32_t getInternalBufferHeight() const;
uint32_t getInternalViewportWidth() const;
uint32_t getInternalViewportHeight() const;
uint32_t getInternalSampleCount() const;
bool isOutputMSAA() const;
bool isInternalMSAA() const;
FilterMode getFilterMode() const;
uint32_t getCoarseResolution(const VolumeDesc * pVolumeDesc) const;
//--------------------------------------------------------------------------
// Constant Buffers
struct PerContextCB
{
// c0
NvVec2 vOutputSize;
NvVec2 vOutputSize_Inv;
// c1
NvVec2 vBufferSize;
NvVec2 vBufferSize_Inv;
// c2
float fResMultiplier;
uint32_t uSampleCount;
float pad1[2];
};
void SetupCB_PerContext(PerContextCB * cb);
struct PerFrameCB
{
// c0+4
NvMat44 mProj;
// c4+4
NvMat44 mViewProj;
// c8+4
NvMat44 mViewProj_Inv;
// c12
NvVec2 vOutputViewportSize;
NvVec2 vOutputViewportSize_Inv;
// c13
NvVec2 vViewportSize;
NvVec2 vViewportSize_Inv;
// c14
NvVec3 vEyePosition;
float pad1[1];
// c15
NvVec2 vJitterOffset;
float fZNear;
float fZFar;
// c16
NvVec3 vScatterPower;
uint32_t uNumPhaseTerms;
// c17
NvVec3 vSigmaExtinction;
float pad2[1];
// c18+MAX_PHASE_TERMS (4)
uint32_t uPhaseFunc[MAX_PHASE_TERMS][4];
// c22
NvVec4 vPhaseParams[MAX_PHASE_TERMS];
};
void SetupCB_PerFrame(ViewerDesc const* pViewerDesc, MediumDesc const* pMediumDesc, PerFrameCB * cb);
struct PerVolumeCB
{
// c0+4
NvMat44 mLightToWorld;
// c4
float fLightFalloffAngle;
float fLightFalloffPower;
float fGridSectionSize;
float fLightToEyeDepth;
// c5
float fLightZNear;
float fLightZFar;
float pad[2];
// c6
NvVec4 vAttenuationFactors;
// c7+16
NvMat44 mLightProj[4];
// c23+16
NvMat44 mLightProj_Inv[4];
// c39
NvVec3 vLightDir;
float fDepthBias;
// c40
NvVec3 vLightPos;
uint32_t uMeshResolution;
// c41
NvVec3 vLightIntensity;
float fTargetRaySize;
// c42+4
NvVec4 vElementOffsetAndScale[4];
// c46
NvVec4 vShadowMapDim;
// c47+4
// Only first index of each "row" is used.
// (Need to do this because HLSL can only stride arrays by full offset)
uint32_t uElementIndex[4][4];
};
void SetupCB_PerVolume(ShadowMapDesc const* pShadowMapDesc, LightDesc const* pLightDesc, VolumeDesc const* pVolumeDesc, PerVolumeCB * cb);
struct PerApplyCB
{
// c0
NvMat44 mHistoryXform;
// c4
float fFilterThreshold;
float fHistoryFactor;
float pad1[2];
// c5
NvVec3 vFogLight;
float fMultiScattering;
};
void SetupCB_PerApply(PostprocessDesc const* pPostprocessDesc, PerApplyCB * cb);
//--------------------------------------------------------------------------
// Miscellaneous internal state
bool isInitialized_;
uint32_t debugFlags_;
ContextDesc contextDesc_;
ViewerDesc viewerDesc_;
uint32_t jitterIndex_;
int32_t lastFrameIndex_;
int32_t nextFrameIndex_;
NvMat44 lastViewProj_;
NvMat44 nextViewProj_;
};
////////////////////////////////////////////////////////////////////////////////
}; /*namespace VolumetricLighting*/ }; /*namespace Nv*/
////////////////////////////////////////////////////////////////////////////////
#endif // CONTEXT_COMMON_H
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