koobas.hobune.stream
Get camera's background color in SHADER ?
Hello,
The following shader adds a gradient to objects, which looks like fog IF the camera background color is the same as the shader's fog variable color.
BUT, if i change the background color, I want the fog color to change as well dynamically.
Is this possible?
Shader "Custom/Fog"
{
Properties
{
_Color("Color", Color) = (1,1,1,1)
_MainTex("Texture", 2D) = "white" {}
_FogColor("Fog Color", Color) = (0.3, 0.4, 0.7, 1.0)
_FogStart("Fog Start", float) = 0
_FogEnd("Fog End", float) = 0
}
SubShader
{
Tags{ "RenderType" = "Opaque" }
CGPROGRAM
#pragma surface surf Lambert finalcolor:mycolor vertex:myvert
struct Input
{
float2 uv_MainTex;
half fog;
};
fixed4 _Color;
fixed4 _FogColor;
half _FogStart;
half _FogEnd;
sampler2D _MainTex;
void myvert(inout appdata_full v, out Input data)
{
UNITY_INITIALIZE_OUTPUT(Input,data);
float4 pos = mul(unity_ObjectToWorld, v.vertex).xyzw;
data.fog = saturate((_FogStart - pos.y) / (_FogStart - _FogEnd));
}
void mycolor(Input IN, SurfaceOutput o, inout fixed4 color)
{
fixed3 fogColor = _FogColor.rgb;
fixed3 tintColor = _Color.rgb;
#ifdef UNITY_PASS_FORWARDADD
fogColor = 0;
#endif
color.rgb = lerp(color.rgb * tintColor, fogColor, IN.fog);
}
void surf(Input IN, inout SurfaceOutput o)
{
o.Albedo = tex2D(_MainTex, IN.uv_MainTex).rgb;
}
ENDCG
}
Fallback "Diffuse"
}
uhm... so its not possible?
