声明：版权所有，禁止匿名转载；禁止商业使用。
UV各计算公式：
UV缩放：uv = uv * float2(X,Y)
UV偏移：uv = uv + float2(X,Y)
UV旋转：
X轴 = cos(旋转角度) * uv.x - sin(旋转角度) * uv.y
Y轴 = cos(旋转角度)* uv.y + sin(旋转角度) * uv.x
UV = float2(cos(旋转角度) * uv.x - sin(旋转角度) * uv.y , cos(旋转角度) * uv.y + sin(旋转角度) * uv.x)
UV缩放：
Shader "VinGe/TestUvTiling" {
Properties {
_Color ("Color", Color) = (1,1,1,1)
_MainTex ("Albedo (RGB)", 2D) = "white" {}
_Glossiness ("Smoothness", Range(0,1)) = 0.5
_Metallic ("Metallic", Range(0,1)) = 0.0
_TilingX ("TilingX",float) = 1 //X轴缩放
_TilingY ("TilingY",float) = 1 //Y轴缩放
}
SubShader {
Tags { "RenderType"="Opaque" }
LOD 200
CGPROGRAM
// 基于物理标准照明模型,使阴影所有光类型
#pragma surface surf Standard fullforwardshadows
// 用着色模型3.0的目标,获得更好的照明
#pragma target 3.0
sampler2D _MainTex;
float _TilingX;
float _TilingY;
struct Input {
float2 uv_MainTex;
};
half _Glossiness;
half _Metallic;
fixed4 _Color;
void surf (Input IN, inout SurfaceOutputStandard o) {
//定义UV
float2 uv = IN.uv_MainTex;
//缩放UV
uv = uv * float2(1/_TilingX,1/_TilingY);
// 贴图和颜色
fixed4 c = tex2D (_MainTex, uv) * _Color;
o.Albedo = c.rgb;
// 金属滑块和平滑的变量
o.Metallic = _Metallic;
o.Smoothness = _Glossiness;
o.Alpha = c.a;
}
ENDCG
}
FallBack Off
}
UV偏移：
Shader "VinGe/TestUvOffset" {
Properties {
_Color ("Color", Color) = (1,1,1,1)
_MainTex ("Albedo (RGB)", 2D) = "white" {}
_Glossiness ("Smoothness", Range(0,1)) = 0.5
_Metallic ("Metallic", Range(0,1)) = 0.0
//_OffsetX ("OffsetX",float) = 1
_OffsetY ("OffsetY",float) = 1
}
SubShader {
Tags { "RenderType"="Opaque" }
LOD 200
CGPROGRAM
// 基于物理标准照明模型,使阴影所有光类型
#pragma surface surf Standard fullforwardshadows
// 用着色模型3.0的目标,获得更好的照明
#pragma target 3.0
sampler2D _MainTex;
float _OffsetX;
float _OffsetY;
struct Input {
float2 uv_MainTex;
};
half _Glossiness;
half _Metallic;
fixed4 _Color;
void surf (Input IN, inout SurfaceOutputStandard o) {
//定义UV
float2 uv = IN.uv_MainTex;
//UV偏移
_OffsetX = _Time.x * 5; //X轴随着时间的加大
uv = uv + float2(_OffsetX,_OffsetY);
// 贴图和颜色
fixed4 c = tex2D (_MainTex, uv) * _Color;
o.Albedo = c.rgb;
// 金属滑块和平滑的变量
o.Metallic = _Metallic;
o.Smoothness = _Glossiness;
o.Alpha = c.a;
}
ENDCG
}
FallBack Off
}
UV旋转：
Shader "VinGe/TestUvRotation" {
Properties {
_Color ("Color", Color) = (1,1,1,1)
_MainTex ("Albedo (RGB)", 2D) = "white" {}
_Glossiness ("Smoothness", Range(0,1)) = 0.5
_Metallic ("Metallic", Range(0,1)) = 0.0
_Rotation ("Rotation",float) = 0
}
SubShader {
Tags { "RenderType"="Opaque" }
LOD 200
CGPROGRAM
// 基于物理标准照明模型,使阴影所有光类型
#pragma surface surf Standard fullforwardshadows
// 用着色模型3.0的目标,获得更好的照明
#pragma target 3.0
sampler2D _MainTex;
float _Rotation;
struct Input {
float2 uv_MainTex;
};
half _Glossiness;
half _Metallic;
fixed4 _Color;
void surf (Input IN, inout SurfaceOutputStandard o) {
//定义UV
float2 uv = IN.uv_MainTex;
//UV旋转
_Rotation = _Time.w; //随着时间_Rotation值加大
uv = float2(cos(_Rotation)*uv.x-sin(_Rotation)*uv.y,cos(_Rotation)*uv.y+sin(_Rotation)*uv.x);
// 贴图和颜色
fixed4 c = tex2D (_MainTex, uv) * _Color;
o.Albedo = c.rgb;
// 金属滑块和平滑的变量
o.Metallic = _Metallic;
o.Smoothness = _Glossiness;
o.Alpha = c.a;
}
ENDCG
}
FallBack Off
}