Unity_쉐이더texture

<목차로 돌아가기>

 

텍스쳐 단순 입력

 구체에 이미지를 입힘.

Shader "Custom/CGTest_TextureChange"
{
    Properties{
        _MainTex("Albedo", 2D) = "white" {}
    }
        SubShader{
            Tags {
                "RenderType" = "Opaque"
            }
            Pass{
                CGPROGRAM
                #pragma vertex vert
                #pragma fragment frag
                #include "UnityCG.cginc"

                CBUFFER_START(UnityPerMaterial)
                    sampler2D _MainTex;
                CBUFFER_END

                struct appdata
                {
                    float4 vertex : POSITION;
                    float2 uv : TEXCOORD0;
                };

                struct v2f
                {
                    float4 vertex : SV_POSITION;
                    float2 uv : TEXCOORD0;
                };
                 
                v2f vert(appdata v) {
                    v2f o;
                    o.vertex = UnityObjectToClipPos(v.vertex);
                    o.uv = v.uv;
                    return o;
                }

                half4 frag(v2f i) : SV_Target{
                    half4 c;
                    c = tex2D(_MainTex, i.uv);
                    return c;
                }
                ENDCG
            }
    }
        FallBack "Diffuse"
}

 

텍스쳐를 회색으로 만들기

다음과 같이 색상값을 낮춰서 흑백으로 만들수도 있다.

 

half4 frag(v2f i) : SV_Target{
    half4 c;
    c = tex2D(_MainTex, i.uv);
    c = (c.x + c.y + c.z + c.w) / 10;
    return c;
}

 

 

Lerp 사용해보기

Shader "Custom/CGTest_TextureChange"
{
    Properties{
        _MainTex("Albedo", 2D) = "white" {}
        _SubTex("Albedo", 2D) = "white" {}
        _LerpValue("LerpValue", Range(0,1)) = 1
    }
        SubShader{
            Tags {
                "RenderType" = "Opaque"
            }
            Pass{
                CGPROGRAM
                #pragma vertex vert
                #pragma fragment frag
                #include "UnityCG.cginc"

                CBUFFER_START(UnityPerMaterial)
                    sampler2D _MainTex;
                    sampler2D _SubTex;
                    half _LerpValue;
                CBUFFER_END

                struct appdata
                {
                    float4 vertex : POSITION;
                    float2 uv : TEXCOORD0;
                };

                struct v2f
                {
                    float4 vertex : SV_POSITION;
                    float2 uv : TEXCOORD0;
                };
                 
                v2f vert(appdata v) {
                    v2f o;
                    o.vertex = UnityObjectToClipPos(v.vertex);
                    o.uv = v.uv;
                    return o;
                }

                half4 frag(v2f i) : SV_Target{
                    half4 c;
                    half4 a = tex2D(_MainTex, i.uv);
                    half4 b = tex2D(_SubTex, i.uv);
                    c = lerp(a.xyzw, b.xyzw, _LerpValue);
                    return c;
                }
                ENDCG
            }
    }
        FallBack "Diffuse"
}

 

이미지 합치기

모기는 태워야 꿀맛!

shaderTest.zip

0.04MB

Shader "Custom/CGTest_TextureChange"
{
    Properties{
        _MainTex("Albedo", 2D) = "white" {}
        _SubTex("Albedo", 2D) = "white" {}
        _LerpValue("LerpValue", Range(0,1)) = 1
    }
        SubShader{
            Tags {
                "RenderType" = "Opaque"
            }
            Pass{
                CGPROGRAM
                #pragma vertex vert
                #pragma fragment frag
                #include "UnityCG.cginc"

                CBUFFER_START(UnityPerMaterial)
                    sampler2D _MainTex;
                    sampler2D _SubTex;
                    half _LerpValue;
                CBUFFER_END

                struct appdata
                {
                    float4 vertex : POSITION;
                    float2 uv : TEXCOORD0;
                };

                struct v2f
                {
                    float4 vertex : SV_POSITION;
                    float2 uv : TEXCOORD0;
                };
                 
                v2f vert(appdata v) {
                    v2f o;
                    o.vertex = UnityObjectToClipPos(v.vertex);
                    o.uv = v.uv;
                    return o;
                }

                half4 frag(v2f i) : SV_Target{
                    half4 c;
                    half4 a = tex2D(_MainTex, i.uv);
                    half4 b = tex2D(_SubTex, i.uv);
                    c = lerp(a.xyzw, b.xyzw, b.x);
                    return c;
                }
                ENDCG
            }
    }
        FallBack "Diffuse"
}