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野性酷女 2023-06-22 13:47 79阅读 0赞

一、标题一\#\# 标题  
![abc][]

VertexCM(
            const Scene&  aScene,
            AlgorithmType aAlgorithm,
            const float   aRadiusFactor,
            const float   aRadiusAlpha,
            int           aSeed = 1234
        ) :
            AbstractRenderer(aScene),
            mRng(aSeed),
            mLightTraceOnly(false),
            mUseVC(false),
            mUseVM(false),
            mPpm(false)
        {
        
            switch(aAlgorithm)
            {
        
            case kLightTrace:
                mLightTraceOnly = true;
                break;
            case kPpm:
                mPpm   = true;
                mUseVM = true;
                break;
            case kBpm:
                mUseVM = true;
                break;
            case kBpt:
                mUseVC = true;
                break;
            case kVcm:
                mUseVC = true;
                mUseVM = true;
                break;
            default:
                printf("Unknown algorithm requested\n");
                break;
            }
    
            if(mPpm)
            {
        
                // We will check the scene to make sure it does not contain mixed
                // specular and non-specular materials
                for(int i = 0; i < mScene.GetMaterialCount(); ++i)
                {
        
                    const Material &mat = mScene.GetMaterial(i);
    
                    const bool hasNonSpecular =
                        (mat.mDiffuseReflectance.Max() > 0) ||
                        (mat.mPhongReflectance.Max() > 0);
    
                    const bool hasSpecular =
                        (mat.mMirrorReflectance.Max() > 0) ||
                        (mat.mIOR > 0);
    
                    if(hasNonSpecular && hasSpecular)
                    {
        
                        printf(
                            "*WARNING* Our PPM implementation cannot handle materials mixing\n"
                            "Specular and NonSpecular BSDFs. The extension would be\n"
                            "fairly straightforward. In SampleScattering for camera sub-paths\n"
                            "limit the considered events to Specular only.\n"
                            "Merging will use non-specular components, scattering will be specular.\n"
                            "If there is no specular component, the ray will terminate.\n\n");
    
                        printf("We are now switching from *PPM* to *BPM*, which can handle the scene\n\n");
    
                        mPpm = false;
                        break;
                    }
                }
            }
    
            mBaseRadius  = aRadiusFactor * mScene.mSceneSphere.mSceneRadius;
            mRadiusAlpha = aRadiusAlpha;
        }

二、标题二\#\# 标题

[abc]: https://img-blog.csdnimg.cn/20191216161442566.png?type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NoMTUyODUxMTg1ODY=,size_16,color_FFFFFF,t_70