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63 lines
1.4 KiB
63 lines
1.4 KiB
11 months ago
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//Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
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Shader "Conversion/CubemapToEquirectangularSqueeze" {
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Properties{
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_MainTex("Cubemap (RGB)", CUBE) = "" {}
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_EquiRotation("Value", Float) = 1.0
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_EquiRotationY("Value", Float) = 1.0
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_DivideY("Divide Y", Float) = 2
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_DivideX("Divide X", Float) = 4
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}
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Subshader{
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Pass {
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ZTest Always Cull Off ZWrite Off
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Fog { Mode off }
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#pragma fragmentoption ARB_precision_hint_fastest
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//#pragma fragmentoption ARB_precision_hint_nicest
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#include "UnityCG.cginc"
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#define PI 3.141592653589793
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#define TWOPI 6.283185307179587
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struct v2f {
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float4 pos : POSITION;
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float2 uv : TEXCOORD0;
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};
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samplerCUBE _MainTex;
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float _EquiRotation;
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float _EquiRotationY;
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float _DivideY;
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float _DivideX;
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v2f vert(appdata_img v)
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{
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v2f o;
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o.pos = UnityObjectToClipPos(v.vertex);
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o.uv = v.texcoord.xy * float2(TWOPI/_DivideX, PI/_DivideY);
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return o;
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}
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fixed4 frag(v2f i) : COLOR
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{
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float theta = i.uv.y + ((_EquiRotationY * PI/2));
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float phi = i.uv.x + ((_EquiRotation * TWOPI/4));
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float3 unit = float3(0,0,0);
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unit.x = sin(phi) * sin(theta) * -1;
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unit.y = cos(theta) * -1;
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unit.z = cos(phi) * sin(theta) * -1;
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return texCUBE(_MainTex, unit);
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}
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ENDCG
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}
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}
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Fallback Off
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}
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