Shader-物体发光效果

Unity自发光与外发光技术

最新推荐文章于 2025-11-04 09:25:50 发布

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最新推荐文章于 2025-11-04 09:25:50 发布 · 3.1k 阅读

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内发光：
将物体边缘

            v2f vert (appdata v)
            {
                v2f o;
                o.vertex = UnityObjectToClipPos(v.vertex);
                o.uv = TRANSFORM_TEX(v.uv, _MainTex);
                o.worldNormal = mul(v.normal, (float3x3)unity_WorldToObject);
                o.worldPos = mul(unity_ObjectToWorld, v.vertex);
                return o;
            }
            
            fixed4 frag (v2f i) : SV_Target
            {
                // sample the texture
                fixed4 col = tex2D(_MainTex, i.uv);
                float3 worldNormal = normalize(i.worldNormal);
                float3 viewDir = normalize(_WorldSpaceCameraPos.xyz - i.worldPos.xyz);
                float cosValue = dot(worldNormal, viewDir);
                //cos值大于阈值时不实现自发光效果
                if (cosValue >= _Thres