* 习题6卡通化代码（已注释），调整wave项目的起始平行光源位置

Author: [email protected]

Chapter 8 Lighting/Core/Shaders/LightingUtil.hlsl

@@ -47,6 +47,12 @@ float3 BlinnPhong(float3 lightStrength, float3 lightVec, float3 normal, float3 t
     float3 halfVec = normalize(toEye + lightVec);
 
     float roughnessFactor = (m + 8.0f)*pow(max(dot(halfVec, normal), 0.0f), m) / 8.0f;
+
+    // ¿¨Í¨»¯
+//    if (roughnessFactor <= 0.1) roughnessFactor = 0.0;
+//    else if (roughnessFactor <= 0.8) roughnessFactor = 0.5;
+//    else roughnessFactor = 0.8;
+
     float3 fresnelFactor = SchlickFresnel(mat.FresnelR0, halfVec, lightVec);
 
     float3 specAlbedo = fresnelFactor*roughnessFactor;
@@ -68,6 +74,12 @@ float3 ComputeDirectionalLight(Light L, Material mat, float3 normal, float3 toEy
 
     // Scale light down by Lambert's cosine law.
     float ndotl = max(dot(lightVec, normal), 0.0f);
+
+    // ¿¨Í¨»¯
+//    if (ndotl <= 0.0) ndotl = 0.4;
+//    else if (ndotl <= 0.5) ndotl = 0.6;
+//    else ndotl = 1.0;
+
     float3 lightStrength = L.Strength * ndotl;
 
     return BlinnPhong(lightStrength, lightVec, normal, toEye, mat);

Chapter 8 Lighting/GameApp.h

@@ -78,7 +78,7 @@ class GameApp : public GameCore::IGameApp
     ByteAddressBuffer m_IndexBufferWaves;
     std::vector<Vertex> m_verticesWaves;
     Matrix4 m_waveWorld = Transpose(Matrix4(kIdentity));
-    float mSunTheta = 1.25f * XM_PI;
+    float mSunTheta = 0.25f * XM_PI;
     float mSunPhi = XM_PIDIV4;
 
     // 摄像机