4f0399bcdf
This change adds support for custom background images. Usage: - Background images are stored in "backgrounds" folder as with jpg or png. - Both 360 degree (equirectangular) and 6-side cubemap images are supported. This is automatically detected based on aspect ratio (with cubemap having 4:3 aspect ratio). - Select the background from Settings. Changes: - The selected background image is persisted in config in this format: "background": "backgrounds/my_background.jpg", - Image is decoded in a background thread (via Android plugin), as Texture2D.LoadImage can cause multi-second freeze on the UI thread. We then compensate for unity (re-ordering coordinate origin and also alpha channel). - Made ground smaller & semi-transparent
97 lines
2.8 KiB
Plaintext
97 lines
2.8 KiB
Plaintext
Shader "skybox/cube" {
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Properties {
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_Tint ("Tint Color", Color) = (.5, .5, .5, .5)
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[Gamma] _Exposure ("Exposure", Range(0, 8)) = 1.0
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_RotationX ("RotationX", Range(0, 360)) = 0
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_RotationY ("RotationY", Range(0, 360)) = 0
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_RotationZ ("RotationZ", Range(0, 360)) = 0
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[NoScaleOffset] _Tex ("Cubemap (HDR)", Cube) = "grey" {}
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}
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SubShader {
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Tags { "Queue"="Background" "RenderType"="Background" "PreviewType"="Skybox" }
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Cull Off ZWrite Off
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Pass {
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#pragma target 2.0
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#include "UnityCG.cginc"
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samplerCUBE _Tex;
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half4 _Tex_HDR;
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half4 _Tint;
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half _Exposure;
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float _RotationX;
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float _RotationY;
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float _RotationZ;
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float3 RotateAroundXInDegrees (float3 vertex, float degrees)
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{
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float alpha = degrees * UNITY_PI / 180.0;
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float sina, cosa;
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sincos(alpha, sina, cosa);
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float2x2 m = float2x2(cosa, -sina, sina, cosa);
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return float3(vertex.x, mul(m, vertex.yz)).xyz; //yzx
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}
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float3 RotateAroundYInDegrees (float3 vertex, float degrees)
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{
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float alpha = degrees * UNITY_PI / 180.0;
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float sina, cosa;
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sincos(alpha, sina, cosa);
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float2x2 m = float2x2(cosa, -sina, sina, cosa);
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return float3(mul(m, vertex.xz), vertex.y).xzy;
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}
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float3 RotateAroundZInDegrees (float3 vertex, float degrees)
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{
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float alpha = degrees * UNITY_PI / 180.0;
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float sina, cosa;
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sincos(alpha, sina, cosa);
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float2x2 m = float2x2(cosa, -sina, sina, cosa);
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return float3(mul(m, vertex.xy), vertex.z).zxy;
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}
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struct appdata_t {
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float4 vertex : POSITION;
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UNITY_VERTEX_INPUT_INSTANCE_ID
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};
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struct v2f {
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float4 vertex : SV_POSITION;
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float3 texcoord : TEXCOORD0;
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UNITY_VERTEX_OUTPUT_STEREO
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};
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v2f vert (appdata_t v)
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{
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v2f o;
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UNITY_SETUP_INSTANCE_ID(v);
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UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
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// Only rotate on X-axis. Can add othere axes later if needed.
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float3 rotated = RotateAroundXInDegrees(v.vertex, _RotationX);
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o.vertex = UnityObjectToClipPos(rotated);
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o.texcoord = v.vertex.xyz;
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return o;
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}
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fixed4 frag (v2f i) : SV_Target
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{
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half4 tex = texCUBE (_Tex, i.texcoord);
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half3 c = DecodeHDR (tex, _Tex_HDR);
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c = c * _Tint.rgb * unity_ColorSpaceDouble.rgb;
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c *= _Exposure;
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return half4(c, 1);
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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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} |