用于Unity的YUV着色器? [英] YUV shader for Unity?
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问题描述
我在Unity中有一些(适当的,平面的)YUV纹理,我只想看到它们供开发人员使用.
I have some (proper, planar) YUV textures in Unity, and I just want to see them for dev use.
实际上有一个适用于Unity的YUV着色器(其着色器语言变体)在起作用吗?
Is there actually a working YUV shader for Unity (their shader language variant) kicking around?
从概念上讲,它很简单,可以将YUV转换为RGB ..但有点儿麻烦.
It's simple enough conceptually to convert from YUV to RGB .. but a bit fiddly.
推荐答案
YUV到RGB转换着色器:
YUV to RGB conversion shader:
Shader "Hidden/YUVtoRGB"
{
Properties
{
_MainTex ("Texture", 2D) = "white" {}
}
SubShader
{
// No culling or depth
Cull Off ZWrite Off ZTest Always
Pass
{
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"
struct appdata
{
float4 vertex : POSITION;
float2 uv : TEXCOORD0;
};
struct v2f
{
float2 uv : TEXCOORD0;
float4 vertex : SV_POSITION;
};
v2f vert (appdata v)
{
v2f o;
o.vertex = UnityObjectToClipPos(v.vertex);
o.uv = v.uv;
return o;
}
sampler2D _MainTex;
fixed3 YUVtoRGB(fixed3 c)
{
fixed3 rgb;
rgb.r = c.x + c.z * 1.13983;
rgb.g = c.x + dot(fixed2(-0.39465, -0.58060), c.yz);
rgb.b = c.x + c.y * 2.03211;
return rgb;
}
fixed4 frag (v2f i) : SV_Target
{
fixed4 yuv = tex2D(_MainTex, i.uv);
fixed4 rgb = fixed4(YUVtoRGB(yuv.rgb), yuv.a);
return rgb;
}
ENDCG
}
}
}
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