Shader-數據類型

變量除了在 代碼段中申明外 還 必須在Properties中 聲明後才能正確使用（和能在inspector視圖顯示）

Properties中格式爲：變量名字（inspector中顯示的名字，類型）=默認值

其中類型有（類型=舉例---------------對應CG語言中類型）

Range(min,max)=0---------------float ,half , fixed

Float=0.0 ------------------------------float,half,fixed

Int=1--------------------------------------int

Color=(1,1,1,1) 或(1,1,1)-----------float4 ,float3,half4 ,fixed4

vector=(1,1,1,1) 或 (1,1,1)----------float4 ,float3,half4 ,fixed4

2D="white"{} ------------------------sampler2D

3D="white"{} ------------------------sampler3D

Cube=="white"{} ------------------------samplerCUBE

數據類型說明：

float是32位浮點數

half是16位浮點數

fixed是12位定點數

float

s23e8 ("fp32") IEEE single precision floating point

half

s10e5 ("fp16") floating point w/ IEEE semantics

fixed

S1.10 fixed point, clamping to [-2, 2)

double

s52e11 ("fp64") IEEE double precision floating point 

 

常量後綴：

• d for double
• f for float
• h for half
• i for int
• l for long
• s for short
• t for char
• u for unsigned, which may also be followed by s, t, i, or l
• x for fixed

 

Shader "Custom/NewShader" {
	Properties {
		_MainTex ("Base (RGB)", 2D) = "white" {}
        _color("color",Color)=(1,1,1)       
	}
	SubShader {
		Tags { "RenderType"="Opaque" }
		LOD 200
		
		CGPROGRAM
		#pragma surface surf Lambert

		sampler2D _MainTex;
		float3 _color;

		struct Input {
			float2 uv_MainTex;
		};

		void surf (Input IN, inout SurfaceOutput o) {
			half4 c = tex2D (_MainTex, IN.uv_MainTex);
            
   
          c.rgb=_color;
            
			o.Albedo = c.rgb;
			o.Alpha = c.a;
		}
		ENDCG
	} 
	FallBack "Diffuse"
}