122 lines
3.5 KiB
Plaintext
122 lines
3.5 KiB
Plaintext
Shader "LeviathanVideo/YUV420P_3D_Alpha_Bottom"
|
||
{
|
||
Properties
|
||
{
|
||
_MainTex ("YTexture", 2D) = "white" {}
|
||
_UTex("UTexture",2D)="white"{}
|
||
_VTex("VTexture",2D)="white"{}
|
||
[Toggle]_ReverseY("Reverse Y",Float)=1
|
||
|
||
_Color ("Tint", Color) = (1,1,1,1)
|
||
|
||
[Enum(UnityEngine.Rendering.CullMode)] _Cull ("Cull Mode", Float) = 2
|
||
[Enum(Off, 0, On, 1)] _ZWrite ("ZWrite", Float) = 1
|
||
[Enum(UnityEngine.Rendering.CompareFunction)] _ZTest ("ZTest", Float) = 4
|
||
}
|
||
|
||
SubShader
|
||
{
|
||
Tags
|
||
{
|
||
"Queue"="Transparent"
|
||
"IgnoreProjector"="True"
|
||
"RenderType"="Transparent"
|
||
}
|
||
|
||
Cull [_Cull]
|
||
Lighting Off
|
||
ZWrite [_ZWrite]
|
||
ZTest [_ZTest]
|
||
Blend SrcAlpha OneMinusSrcAlpha
|
||
|
||
Pass
|
||
{
|
||
Name "Default"
|
||
CGPROGRAM
|
||
#pragma vertex vert
|
||
#pragma fragment frag
|
||
#pragma target 2.0
|
||
|
||
#include "UnityCG.cginc"
|
||
|
||
//Rec.709
|
||
static const half3x3 YUV_TO_RGB = half3x3(
|
||
1.16438, 1.16438, 1.16438,
|
||
0.0, -0.21325, 2.11240,
|
||
1.79274, -0.53291, 0.0
|
||
);
|
||
static const float FLOAT_16_255 = 16.0 / 255.0;
|
||
static const float FLOAT_128_255 = 128.0 / 255.0;
|
||
|
||
struct appdata_t
|
||
{
|
||
float4 vertex : POSITION;
|
||
float4 color : COLOR;
|
||
float2 texcoord : TEXCOORD0;
|
||
UNITY_VERTEX_INPUT_INSTANCE_ID
|
||
};
|
||
|
||
struct v2f
|
||
{
|
||
float4 vertex : SV_POSITION;
|
||
fixed4 color : COLOR;
|
||
float2 texcoord : TEXCOORD0;
|
||
UNITY_VERTEX_OUTPUT_STEREO
|
||
};
|
||
|
||
sampler2D _MainTex,_UTex,_VTex;
|
||
fixed4 _Color;
|
||
float4 _MainTex_ST;
|
||
half _ReverseY;
|
||
|
||
v2f vert(appdata_t v)
|
||
{
|
||
v2f OUT;
|
||
UNITY_SETUP_INSTANCE_ID(v);
|
||
UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(OUT);
|
||
OUT.vertex = UnityObjectToClipPos(v.vertex);
|
||
OUT.texcoord = TRANSFORM_TEX(v.texcoord.xy, _MainTex);
|
||
if (_ReverseY > 0)
|
||
{
|
||
OUT.texcoord.y = 1 - OUT.texcoord.y;
|
||
}
|
||
OUT.color = v.color * _Color;
|
||
return OUT;
|
||
}
|
||
|
||
fixed4 frag(v2f IN) : SV_Target
|
||
{
|
||
half3 c = 0;
|
||
half2 uv = IN.texcoord;
|
||
// 上半部分是颜色，下半部分是Alpha
|
||
half2 uv1 = half2(uv.x, uv.y * 0.5);
|
||
half2 uv2 = half2(uv.x, uv.y * 0.5 + 0.5);
|
||
|
||
c.r = tex2D(_MainTex, uv1).a - FLOAT_16_255;
|
||
c.g = tex2D(_UTex, uv1).a - FLOAT_128_255;
|
||
c.b = tex2D(_VTex, uv1).a - FLOAT_128_255;
|
||
c = mul(c, YUV_TO_RGB);
|
||
|
||
half3 ca = 0;
|
||
ca.r = tex2D(_MainTex, uv2).a - FLOAT_16_255;
|
||
ca.g = tex2D(_UTex, uv2).a - FLOAT_128_255;
|
||
ca.b = 1;
|
||
ca = mul(ca, YUV_TO_RGB);
|
||
c /= clamp(ca.b, 0.01, 1);
|
||
c = saturate(c);
|
||
|
||
half4 color = half4(c, ca.b);
|
||
#ifdef UNITY_COLORSPACE_GAMMA
|
||
#else
|
||
color.rgb = pow(color.rgb, 2.2);
|
||
#endif
|
||
color.rgb = color.rgb * _Color.rgb;
|
||
|
||
return color * IN.color;
|
||
}
|
||
ENDCG
|
||
}
|
||
}
|
||
}
|
||
|