Shader "GUI/Text Shader" {
Properties {
_MainTex ("Font Texture", 2D) = "white" {}
_Color ("Text Color", Color) = (1,1,1,1)
}
SubShader {
Tags {
"Queue"="Transparent"
"IgnoreProjector"="True"
"RenderType"="Transparent"
"PreviewType"="Plane"
}
Lighting Off Cull Off ZTest Always ZWrite Off Fog { Mode Off }
Blend SrcAlpha OneMinusSrcAlpha
Pass {
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"
struct appdata_t {
float4 vertex : POSITION;
fixed4 color : COLOR;
float2 texcoord : TEXCOORD0;
};
struct v2f {
float4 vertex : POSITION;
fixed4 color : COLOR;
float2 texcoord : TEXCOORD0;
};
sampler2D _MainTex;
uniform float4 _MainTex_ST;
uniform fixed4 _Color;
v2f vert (appdata_t v)
{
v2f o;
o.vertex = mul(UNITY_MATRIX_MVP, v.vertex);
o.color = v.color * _Color;
o.texcoord = TRANSFORM_TEX(v.texcoord,_MainTex);
return o;
}
fixed4 frag (v2f i) : COLOR
{
fixed4 col = i.color;
col.a *= tex2D(_MainTex, i.texcoord).a;
return col;
}
ENDCG
}
}
Properties {
_MainTex ("Font Texture", 2D) = "white" {}
_Color ("Text Color", Color) = (1,1,1,1)
}
SubShader {
Tags {
"Queue"="Transparent"
"IgnoreProjector"="True"
"RenderType"="Transparent"
"PreviewType"="Plane"
}
Lighting Off Cull Off ZTest Always ZWrite Off Fog { Mode Off }
Blend SrcAlpha OneMinusSrcAlpha
Pass {
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"
struct appdata_t {
float4 vertex : POSITION;
fixed4 color : COLOR;
float2 texcoord : TEXCOORD0;
};
struct v2f {
float4 vertex : POSITION;
fixed4 color : COLOR;
float2 texcoord : TEXCOORD0;
};
sampler2D _MainTex;
uniform float4 _MainTex_ST;
uniform fixed4 _Color;
v2f vert (appdata_t v)
{
v2f o;
o.vertex = mul(UNITY_MATRIX_MVP, v.vertex);
o.color = v.color * _Color;
o.texcoord = TRANSFORM_TEX(v.texcoord,_MainTex);
return o;
}
fixed4 frag (v2f i) : COLOR
{
fixed4 col = i.color;
col.a *= tex2D(_MainTex, i.texcoord).a;
return col;
}
ENDCG
}
}
}
Unity 文本 Shader 实现
本文介绍了一个用于 Unity 引擎中的 GUI 文本 Shader 的实现细节。该 Shader 通过自定义着色器来渲染文本,支持透明队列渲染,并且能够进行颜色调整。通过 CGPROGRAM 定义了顶点和片段着色器,实现了纹理坐标转换和颜色混合等功能。

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