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	<title>Ambient Archives - 어제와 내일의 나 그 사이의 이야기</title>
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	<item>
		<title>환경 조명, 환경광 (Ambient Light)</title>
		<link>https://lycos7560.com/etc/%ed%99%98%ea%b2%bd-%ec%a1%b0%eb%aa%85-%ed%99%98%ea%b2%bd%ea%b4%91-ambient-light/37974/</link>
					<comments>https://lycos7560.com/etc/%ed%99%98%ea%b2%bd-%ec%a1%b0%eb%aa%85-%ed%99%98%ea%b2%bd%ea%b4%91-ambient-light/37974/#respond</comments>
		
		<dc:creator><![CDATA[lycos7560]]></dc:creator>
		<pubDate>Sat, 17 Feb 2024 21:43:01 +0000</pubDate>
				<category><![CDATA[개인 공부 저장용]]></category>
		<category><![CDATA[기타]]></category>
		<category><![CDATA[Ambient]]></category>
		<category><![CDATA[Ambient Light]]></category>
		<category><![CDATA[light]]></category>
		<category><![CDATA[환경 조명]]></category>
		<category><![CDATA[환경광]]></category>
		<guid isPermaLink="false">https://lycos7560.com/?p=37974</guid>

					<description><![CDATA[<p>환경 조명, 환경광 (Ambient Light) 주변에서 발생하는 자연광이나 인공광 등으로, 특정 방향이나 원래 빛을 색출하지 않고 모든 방향으로 일정하게 퍼져나가는 빛을 의미합니다. 이는 주로 주변 환경에서 반사된 빛이나 다른 광원에서의 산란된 빛으로 구성됩니다. 주변광은 환경의 전반적인 밝기를 높이고 물체를 더 잘 보이게 만들어줍니다. 예를 들어, 방 안에 있는 전체적인 조명이나 창문을 통해 들어오는 자연광은 주변광의 [&#8230;]</p>
<p>The post <a href="https://lycos7560.com/etc/%ed%99%98%ea%b2%bd-%ec%a1%b0%eb%aa%85-%ed%99%98%ea%b2%bd%ea%b4%91-ambient-light/37974/">환경 조명, 환경광 (Ambient Light)</a> appeared first on <a href="https://lycos7560.com">어제와 내일의 나 그 사이의 이야기</a>.</p>
]]></description>
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<p class="has-medium-font-size wp-block-paragraph"><strong>환경 조명, 환경광 (Ambient Light)</strong></p>



<p class="wp-block-paragraph">주변에서 발생하는 <strong>자연광이나 인공광 등으로, 특정 방향이나 원래 빛을 색출하지 않고 모든 방향으로 일정하게 퍼져나가는 빛을 의미</strong>합니다. </p>



<p class="wp-block-paragraph">이는 주로<strong> 주변 환경에서 반사된 빛이나 다른 광원에서의 산란된 빛으로 구성됩니다.</strong></p>



<p class="wp-block-paragraph">주변광은 환경의 전반적인 밝기를 높이고 물체를 더 잘 보이게 만들어줍니다. </p>



<p class="wp-block-paragraph">예를 들어, 방 안에 있는 전체적인 조명이나 창문을 통해 들어오는 자연광은 주변광의 한 예입니다. </p>



<p class="wp-block-paragraph">이러한 주변광은 빛이 특정 방향에서 집중되는 것이 아니라 주변 공간을 채우는 형태로 존재합니다.</p>



<p class="wp-block-paragraph">주변광은 주로 조명 설계에서 중요한 역할을 합니다. </p>



<p class="wp-block-paragraph">물체에 직접적인 조명을 가하는 것 외에도 주변광을 적절히 활용함으로써 물체의 형태와 특징을 부각시키고 환경을 더 밝고 쾌적하게 만들 수 있습니다. </p>



<p class="wp-block-paragraph">또한 3D 그래픽 디자인이나 가상 현실(VR) 등의 분야에서는 주변광을 사용하여 현실적인 조명 효과를 시뮬레이션하거나 공간을 더 자연스럽게 표현할 수 있습니다.</p>



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<figure class="wp-block-image size-full"><img fetchpriority="high" decoding="async" width="1055" height="700" src="https://lycos7560.com/wp-content/uploads/2024/03/image-7.jpg" alt="" class="wp-image-37975" srcset="https://lycos7560.com/wp-content/uploads/2024/03/image-7.jpg 1055w, https://lycos7560.com/wp-content/uploads/2024/03/image-7-300x199.jpg 300w, https://lycos7560.com/wp-content/uploads/2024/03/image-7-768x510.jpg 768w" sizes="(max-width: 1055px) 100vw, 1055px" /><figcaption class="wp-element-caption"><a href="https://www.rothschildphotography.com/ambient-light" target="_blank" rel="noreferrer noopener">https://www.rothschildphotography.com/ambient-light</a></figcaption></figure>
</div>



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</div>
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<figure class="wp-block-image size-full"><img decoding="async" width="1053" height="698" src="https://lycos7560.com/wp-content/uploads/2024/03/image-7.png" alt="" class="wp-image-37977" srcset="https://lycos7560.com/wp-content/uploads/2024/03/image-7.png 1053w, https://lycos7560.com/wp-content/uploads/2024/03/image-7-300x199.png 300w, https://lycos7560.com/wp-content/uploads/2024/03/image-7-768x509.png 768w" sizes="(max-width: 1053px) 100vw, 1053px" /><figcaption class="wp-element-caption"><a href="https://www.rothschildphotography.com/ambient-light" target="_blank" rel="noreferrer noopener">https://www.rothschildphotography.com/ambient-light</a></figcaption></figure>
</div>



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<figure class="wp-block-image size-full"><img decoding="async" width="1055" height="704" src="https://lycos7560.com/wp-content/uploads/2024/03/image-8.jpg" alt="" class="wp-image-37978" srcset="https://lycos7560.com/wp-content/uploads/2024/03/image-8.jpg 1055w, https://lycos7560.com/wp-content/uploads/2024/03/image-8-300x200.jpg 300w, https://lycos7560.com/wp-content/uploads/2024/03/image-8-768x512.jpg 768w" sizes="(max-width: 1055px) 100vw, 1055px" /><figcaption class="wp-element-caption"><a href="https://www.rothschildphotography.com/ambient-light" target="_blank" rel="noreferrer noopener">https://www.rothschildphotography.com/ambient-light</a></figcaption></figure>
</div>
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<figure class="wp-block-image size-full"><img decoding="async" width="732" height="333" src="https://lycos7560.com/wp-content/uploads/2024/03/image-9.png" alt="" class="wp-image-37980" srcset="https://lycos7560.com/wp-content/uploads/2024/03/image-9.png 732w, https://lycos7560.com/wp-content/uploads/2024/03/image-9-300x136.png 300w" sizes="(max-width: 732px) 100vw, 732px" /><figcaption class="wp-element-caption"><a href="https://medium.com/@EightyLevel/7-tips-for-better-lighting-in-unity-686694892ece" target="_blank" rel="noreferrer noopener">https://medium.com/@EightyLevel/7-tips-for-better-lighting-in-unity-686694892ece</a></figcaption></figure>
</div>



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<figure class="wp-block-image size-full"><img decoding="async" width="835" height="412" src="https://lycos7560.com/wp-content/uploads/2024/03/image-10.jpg" alt="" class="wp-image-37981" srcset="https://lycos7560.com/wp-content/uploads/2024/03/image-10.jpg 835w, https://lycos7560.com/wp-content/uploads/2024/03/image-10-300x148.jpg 300w, https://lycos7560.com/wp-content/uploads/2024/03/image-10-768x379.jpg 768w" sizes="(max-width: 835px) 100vw, 835px" /><figcaption class="wp-element-caption"><a href="https://www.loxone.com/enen/products/lighting-products/ambient-lighting/" target="_blank" rel="noreferrer noopener">https://www.loxone.com/enen/products/lighting-products/ambient-lighting/</a></figcaption></figure>
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<p>The post <a href="https://lycos7560.com/etc/%ed%99%98%ea%b2%bd-%ec%a1%b0%eb%aa%85-%ed%99%98%ea%b2%bd%ea%b4%91-ambient-light/37974/">환경 조명, 환경광 (Ambient Light)</a> appeared first on <a href="https://lycos7560.com">어제와 내일의 나 그 사이의 이야기</a>.</p>
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			<slash:comments>0</slash:comments>
		
		
			</item>
		<item>
		<title>8 &#8211; 04 Occlusion (오클루젼) (Unity Shader)</title>
		<link>https://lycos7560.com/unity/unity_shader/unity_shader-ambient-occlusion/2820/</link>
					<comments>https://lycos7560.com/unity/unity_shader/unity_shader-ambient-occlusion/2820/#respond</comments>
		
		<dc:creator><![CDATA[lycos7560]]></dc:creator>
		<pubDate>Thu, 01 Dec 2022 01:54:04 +0000</pubDate>
				<category><![CDATA[Unity]]></category>
		<category><![CDATA[UnityShader]]></category>
		<category><![CDATA[Ambient]]></category>
		<category><![CDATA[Ambient Occlusion]]></category>
		<category><![CDATA[Occlusion]]></category>
		<category><![CDATA[Shader]]></category>
		<category><![CDATA[Standard Surface Shader]]></category>
		<category><![CDATA[struct]]></category>
		<category><![CDATA[Unity Shader]]></category>
		<category><![CDATA[쉐이더]]></category>
		<category><![CDATA[엠비언트 오클루젼]]></category>
		<category><![CDATA[오클루젼]]></category>
		<category><![CDATA[유니티]]></category>
		<category><![CDATA[환경광]]></category>
		<category><![CDATA[환경차폐]]></category>
		<guid isPermaLink="false">https://lycos7560.com/?p=2820</guid>

					<description><![CDATA[<p>UnityShader에서 Ambient Occlusion을 사용하는 방법을 간략하게 예제로 설명한 글입니다.</p>
<p>The post <a href="https://lycos7560.com/unity/unity_shader/unity_shader-ambient-occlusion/2820/">8 &#8211; 04 Occlusion (오클루젼) (Unity Shader)</a> appeared first on <a href="https://lycos7560.com">어제와 내일의 나 그 사이의 이야기</a>.</p>
]]></description>
										<content:encoded><![CDATA[
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<h2 class="wp-block-heading"><strong>8 &#8211; 04 Occlusion (오클루젼) (Unity Shader)</strong></h2>



<div style="height:22px" aria-hidden="true" class="wp-block-spacer"></div>



<p class="has-medium-font-size wp-block-paragraph">Occlusion (오클루젼)은 Ambient Occlusion (엠비언트 오클루젼) 이라고 부르며, 구석진 부분의 추가적인 음영을 표현하는 기능입니다.</p>



<p class="has-medium-font-size wp-block-paragraph">일반적으로 세상에서 그림자가 드리워진 부분도 사방에서 오는 환경광 정도를 받고 있는 것이 일반적입니다.</p>



<p class="has-medium-font-size wp-block-paragraph">하지만, 매우 구석져 있거나 복잡한 물체들로 가려져서 환경광도 닫지 못하는 부분은 더욱 더 어두워지는 데&nbsp;&nbsp;</p>



<p class="has-medium-font-size wp-block-paragraph">이 부분은&nbsp;Ambient&nbsp;Occlusion (엠비언트 오클루젼) 환경차폐라고 부릅니다.</p>



<div style="height:31px" aria-hidden="true" class="wp-block-spacer"></div>



<figure class="wp-block-image size-full"><img decoding="async" width="1045" height="597" src="https://lycos7560.com/wp-content/uploads/image-385.png" alt="" class="wp-image-2821" srcset="https://lycos7560.com/wp-content/uploads/image-385.png 1045w, https://lycos7560.com/wp-content/uploads/image-385-300x171.png 300w, https://lycos7560.com/wp-content/uploads/image-385-768x439.png 768w" sizes="(max-width: 1045px) 100vw, 1045px" /></figure>



<div style="height:56px" aria-hidden="true" class="wp-block-spacer"></div>



<p class="has-medium-font-size wp-block-paragraph"><a href="https://docs.unity3d.com/Manual/SL-SurfaceShaders.html" target="_blank" rel="noreferrer noopener">https://docs.unity3d.com/Manual/SL-SurfaceShaders.html</a></p>



<div style="height:21px" aria-hidden="true" class="wp-block-spacer"></div>



<figure class="wp-block-image size-full"><a href="https://docs.unity3d.com/Manual/SL-SurfaceShaders.html" target="_blank" rel="noreferrer noopener"><img decoding="async" width="1312" height="317" src="https://lycos7560.com/wp-content/uploads/image-386.png" alt="" class="wp-image-2822" srcset="https://lycos7560.com/wp-content/uploads/image-386.png 1312w, https://lycos7560.com/wp-content/uploads/image-386-300x72.png 300w, https://lycos7560.com/wp-content/uploads/image-386-768x186.png 768w" sizes="(max-width: 1312px) 100vw, 1312px" /></a></figure>



<div style="height:47px" aria-hidden="true" class="wp-block-spacer"></div>



<figure class="wp-block-image size-full"><img decoding="async" width="840" height="365" src="https://lycos7560.com/wp-content/uploads/image-387.png" alt="" class="wp-image-2823" srcset="https://lycos7560.com/wp-content/uploads/image-387.png 840w, https://lycos7560.com/wp-content/uploads/image-387-300x130.png 300w, https://lycos7560.com/wp-content/uploads/image-387-768x334.png 768w" sizes="(max-width: 840px) 100vw, 840px" /></figure>



<div style="height:72px" aria-hidden="true" class="wp-block-spacer"></div>



<p class="has-medium-font-size wp-block-paragraph">직접 확인해보기 위해서 아래 에셋을 사용했습니다. (무료)</p>



<p class="has-medium-font-size wp-block-paragraph"><a href="https://assetstore.unity.com/packages/3d/characters/humanoids/barbarian-warrior-75519" target="_blank" rel="noreferrer noopener">https://assetstore.unity.com/packages/3d/characters/humanoids/barbarian-warrior-75519</a>&nbsp;&lt;- TestAsset</p>



<div style="height:36px" aria-hidden="true" class="wp-block-spacer"></div>



<figure class="wp-block-image size-full"><img decoding="async" width="1304" height="317" src="https://lycos7560.com/wp-content/uploads/image-388.png" alt="" class="wp-image-2824" srcset="https://lycos7560.com/wp-content/uploads/image-388.png 1304w, https://lycos7560.com/wp-content/uploads/image-388-300x73.png 300w, https://lycos7560.com/wp-content/uploads/image-388-768x187.png 768w" sizes="(max-width: 1304px) 100vw, 1304px" /></figure>



<div style="height:51px" aria-hidden="true" class="wp-block-spacer"></div>



<p class="has-medium-font-size wp-block-paragraph">사용했던 바바리안 몸체는 잠시 비활성화 하고 도끼를 활성화 했습니다.</p>



<p class="has-medium-font-size wp-block-paragraph">쉐이더 코드는 바바리안 바디에 적용했던 코드를 사용했습니다.</p>



<div style="height:45px" aria-hidden="true" class="wp-block-spacer"></div>



<figure class="wp-block-image size-full"><img decoding="async" width="1298" height="900" src="https://lycos7560.com/wp-content/uploads/image-389.png" alt="" class="wp-image-2825" srcset="https://lycos7560.com/wp-content/uploads/image-389.png 1298w, https://lycos7560.com/wp-content/uploads/image-389-300x208.png 300w, https://lycos7560.com/wp-content/uploads/image-389-768x533.png 768w" sizes="(max-width: 1298px) 100vw, 1298px" /></figure>



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<pre class="EnlighterJSRAW" data-enlighter-language="csharp" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">Shader "Custom/AxeOC"
{
    Properties
    {
        _MainTex("Albedo (RGB)", 2D) = "white" {}
        _BumpMap("Normal Map", 2D) = "white" {} // NormalMap
        _Test("TestFloat",Range(0.5, 3)) = 1
    }
        SubShader
        {
            Tags { "RenderType" = "Opaque" }
            LOD 200

            CGPROGRAM
            #pragma surface surf Standard
            #pragma target 3.0

            sampler2D _MainTex;
            sampler2D _BumpMap; // NormalMap
            float _Test;

            struct Input
            {
                float2 uv_MainTex;
                float2 uv_BumpMap; // NormalMap
            };

            void surf(Input IN, inout SurfaceOutputStandard o)
            {
                float4 c = tex2D(_MainTex, IN.uv_MainTex);

                float3 d = UnpackNormal(tex2D(_BumpMap, IN.uv_BumpMap));
                o.Normal = float3(d.x * _Test, d.y * _Test, d.z);
                // _Test에 따라서 수치 변화  2  2배  0.5  0.5배 
                o.Albedo = c.rgb;
                o.Alpha = c.a;
            }
            ENDCG
        }
            FallBack "Diffuse"
}</pre>



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<p class="has-medium-font-size wp-block-paragraph">Occlusion 추가</p>



<div style="height:37px" aria-hidden="true" class="wp-block-spacer"></div>



<figure class="wp-block-image size-full"><img decoding="async" width="761" height="999" src="https://lycos7560.com/wp-content/uploads/image-390.png" alt="" class="wp-image-2826" srcset="https://lycos7560.com/wp-content/uploads/image-390.png 761w, https://lycos7560.com/wp-content/uploads/image-390-229x300.png 229w" sizes="(max-width: 761px) 100vw, 761px" /></figure>



<div style="height:55px" aria-hidden="true" class="wp-block-spacer"></div>



<pre class="EnlighterJSRAW" data-enlighter-language="csharp" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">Shader "Custom/AxeOC"
{
    Properties
    {
        _MainTex("Albedo (RGB)", 2D) = "white" {}
        _BumpMap("Normal Map", 2D) = "white" {}
        _Test("TestFloat",Range(0.5, 3)) = 1
        _Occlusion("Occlusion", 2D) = "white" {} // Occlusion
    }
        SubShader
    {
        Tags { "RenderType" = "Opaque" }
        LOD 200

        CGPROGRAM
        #pragma surface surf Standard
        #pragma target 3.0

        sampler2D _MainTex;
        sampler2D _BumpMap;
        sampler2D _Occlusion;

        float _Test;

        struct Input
        {
            float2 uv_MainTex;
            float2 uv_BumpMap;
            // 주의 uv_Occlusion 포함 X

        };

        void surf(Input IN, inout SurfaceOutputStandard o)
        {
            float4 c = tex2D(_MainTex, IN.uv_MainTex);
            o.Occlusion = tex2D(_Occlusion, IN.uv_MainTex); // Occlusion
            // _MainTex와 동일한 UV 값을 받습니다.

            float3 d = UnpackNormal(tex2D(_BumpMap, IN.uv_BumpMap));
            o.Normal = float3(d.x * _Test, d.y * _Test, d.z);
            o.Albedo = c.rgb;
            o.Alpha = c.a;
        }
        ENDCG
    }
        FallBack "Diffuse"
}</pre>



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<div style="height:86px" aria-hidden="true" class="wp-block-spacer"></div>



<p class="has-medium-font-size wp-block-paragraph">Occlusion 적용 전</p>



<div style="height:21px" aria-hidden="true" class="wp-block-spacer"></div>



<figure class="wp-block-image size-full"><img decoding="async" width="440" height="430" src="https://lycos7560.com/wp-content/uploads/image-391.png" alt="" class="wp-image-2827" srcset="https://lycos7560.com/wp-content/uploads/image-391.png 440w, https://lycos7560.com/wp-content/uploads/image-391-300x293.png 300w" sizes="(max-width: 440px) 100vw, 440px" /></figure>



<div style="height:52px" aria-hidden="true" class="wp-block-spacer"></div>



<figure class="wp-block-video"><video height="688" style="aspect-ratio: 1232 / 688;" width="1232" controls src="https://lycos7560.com/wp-content/uploads/녹화_2022_12_01_10_43_19_134.mp4"></video></figure>



<div style="height:93px" aria-hidden="true" class="wp-block-spacer"></div>



<p class="has-medium-font-size wp-block-paragraph">Occlusion 적용 후</p>



<div style="height:24px" aria-hidden="true" class="wp-block-spacer"></div>



<figure class="wp-block-image size-full"><img decoding="async" width="478" height="388" src="https://lycos7560.com/wp-content/uploads/image-392.png" alt="" class="wp-image-2829" srcset="https://lycos7560.com/wp-content/uploads/image-392.png 478w, https://lycos7560.com/wp-content/uploads/image-392-300x244.png 300w" sizes="(max-width: 478px) 100vw, 478px" /></figure>



<div style="height:32px" aria-hidden="true" class="wp-block-spacer"></div>



<figure class="wp-block-video"><video height="688" style="aspect-ratio: 1232 / 688;" width="1232" controls src="https://lycos7560.com/wp-content/uploads/녹화_2022_12_01_10_45_53_811.mp4"></video></figure>



<div style="height:67px" aria-hidden="true" class="wp-block-spacer"></div>



<figure class="wp-block-image size-full"><img decoding="async" width="1305" height="736" src="https://lycos7560.com/wp-content/uploads/image-393.png" alt="" class="wp-image-2831" srcset="https://lycos7560.com/wp-content/uploads/image-393.png 1305w, https://lycos7560.com/wp-content/uploads/image-393-300x169.png 300w, https://lycos7560.com/wp-content/uploads/image-393-768x433.png 768w" sizes="(max-width: 1305px) 100vw, 1305px" /></figure>



<div style="height:82px" aria-hidden="true" class="wp-block-spacer"></div>



<p class="has-medium-font-size wp-block-paragraph">Normal Map 의 강도를 조절하면 더 확실하게 알 수 있습니다.</p>



<div style="height:43px" aria-hidden="true" class="wp-block-spacer"></div>



<figure class="wp-block-video"><video height="612" style="aspect-ratio: 1480 / 612;" width="1480" controls src="https://lycos7560.com/wp-content/uploads/녹화_2022_12_01_10_48_01_712.mp4"></video></figure>



<div style="height:81px" aria-hidden="true" class="wp-block-spacer"></div>



<figure class="wp-block-image size-full"><img decoding="async" width="921" height="114" src="https://lycos7560.com/wp-content/uploads/image-394.png" alt="" class="wp-image-2833" srcset="https://lycos7560.com/wp-content/uploads/image-394.png 921w, https://lycos7560.com/wp-content/uploads/image-394-300x37.png 300w, https://lycos7560.com/wp-content/uploads/image-394-768x95.png 768w" sizes="(max-width: 921px) 100vw, 921px" /></figure>



<div style="height:40px" aria-hidden="true" class="wp-block-spacer"></div>



<p class="has-medium-font-size wp-block-paragraph">지금 사용한 코드에서는 Occlusion은 half (SurfaceOutput -float4)를 받습니다. (r 채널만 사용합니다.)</p>



<p class="has-medium-font-size wp-block-paragraph">Occlusion 기능을 위해서 rgb 채널을 사용하는 텍스쳐를 사용하는 것은 낭비입니다.</p>



<p class="has-medium-font-size wp-block-paragraph">_MainTex의 a 채널에 Occlusion 맵을 넣고 사용한다면 텍스쳐를 절약 할 수 있습니다.</p>



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<p class="wp-block-paragraph"></p>



<p class="wp-block-paragraph"></p>



<p class="wp-block-paragraph"></p>



<p class="wp-block-paragraph"></p>
<p>The post <a href="https://lycos7560.com/unity/unity_shader/unity_shader-ambient-occlusion/2820/">8 &#8211; 04 Occlusion (오클루젼) (Unity Shader)</a> appeared first on <a href="https://lycos7560.com">어제와 내일의 나 그 사이의 이야기</a>.</p>
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