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Unity的shader入门介绍

Posted on Edited on In ,

这是和TA相关的一块技术，有时间可以学学计算机图形学对这块有帮助。

自己的代码

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Shader "Siki/MyShader"
{
	Properties//属性
	{
		_Color("_Color",color)=(1,1,1,1)
		_Vector("_Vector",vector)=(1,2,3,4)
		_Int("_Int",int) = 2
		_Float("_Float",float)=3.0
		_Range("_Range",range(1,11)) =6
		//_2D("_2D",2D) = "red"() 
		//_Cube("Cube",Cube) = "white"()
		//_3D("3D",3D) = "black"()
	}

	SubShader//控制效果
	{
		pass
		{
			CGPROGRAM
			
			#include "UnityCG.cginc"



			fixed4 _Color;//float 2进制32位；half 2进制16位，正负6万；fixed 2进制 -2到+2
			float4 _Vector;
			float _Int;
			float _Float;
			float _Range;

			//顶点函数,这里只是声明函数名
			#pragma vertex vert
			//片元函数
			#pragma fragment frag

			float4 vert(float4 v:POSITION):SV_POSITION
			{
				//float4 pos = mul(UNITY_MATRIX_MVP,v);
				float4 pos = UnityObjectToClipPos(v);
				return pos;
				
			}
			
			float4 frag():SV_TARGET0
			{
				return float4(0.5,0.5,1,1);
			}
			
			
			ENDCG
		}
	}
	
	FallBack "VertexLit"		
}







//以下是标准shader
//Shader "Custom/Shader1"
//{
//    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
//    }
//    SubShader
//    {
//        Tags { "RenderType"="Opaque" }
//        LOD 200

//        CGPROGRAM
//        // Physically based Standard lighting model, and enable shadows on all light types
//        #pragma surface surf Standard fullforwardshadows

//        // Use shader model 3.0 target, to get nicer looking lighting
//        #pragma target 3.0

//        sampler2D _MainTex;

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

//        half _Glossiness;
//        half _Metallic;
//        fixed4 _Color;

//        // Add instancing support for this shader. You need to check 'Enable Instancing' on materials that use the shader.
//        // See https://docs.unity3d.com/Manual/GPUInstancing.html for more information about instancing.
//        // #pragma instancing_options assumeuniformscaling
//        UNITY_INSTANCING_BUFFER_START(Props)
//            // put more per-instance properties here
//        UNITY_INSTANCING_BUFFER_END(Props)

//        void surf (Input IN, inout SurfaceOutputStandard o)
//        {
//            // Albedo comes from a texture tinted by color
//            fixed4 c = tex2D (_MainTex, IN.uv_MainTex) * _Color;
//            o.Albedo = c.rgb;
//            // Metallic and smoothness come from slider variables
//            o.Metallic = _Metallic;
//            o.Smoothness = _Glossiness;
//            o.Alpha = c.a;
//        }
//        ENDCG
//    }
//    FallBack "Diffuse"
//}

siki案例截图

siki课程中的案例：
链接：
https://www.bilibili.com/video/BV1kk4y1R7Lc

siki01
siki02