Unity中ShadowMap动态阴影的实现

最新推荐文章于 2025-04-05 00:54:16 发布

MonoBehaviour

最新推荐文章于 2025-04-05 00:54:16 发布

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分类专栏： Unity 文章标签： unity

本文链接：https://blog.youkuaiyun.com/MonoBehaviour/article/details/114897433

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具体的实现如下：

1，生成ShadowMap

2,根据ShadowmMap实现阴影的绘制

ShadowMap的生成：

v2f vert (appdata v)
            {
                v2f o;
                o.vertex = mul(unity_ObjectToWorld, v.vertex);
				float3 normal = normalize(mul(v.normal, unity_WorldToObject));
				//o.vertex.xyz -= normal * _gShadowNormalBias;
				o.vertex = UnityWorldToClipPos(o.vertex);
#if defined(SHADER_TARGET_GLEL)
				o.vertex.z += _gShadowBias * 2;
#elif defined(UNITY_REVERSED_Z)
				o.vertex.z -= _gShadowBias;
#else
				o.vertex.z += _gShadowBias;
#endif
				o.depth = o.vertex.zw;
                return o;
            }

            float4 frag (v2f i) : SV_Target
            {
				float depth = i.depth.x / i.depth.y;
#if defined(SHADER_TARGET_GLEL)
				depth = depth * 0.5 + 0.5;
#el