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97 lines
2.3 KiB
97 lines
2.3 KiB
2 years ago
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// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
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// Marmoset Skyshop
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// Copyright 2014 Marmoset LLC
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// http://marmoset.co
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Shader "Hidden/Marmoset/RGBM Cube" {
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Properties {
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_CubeHDR ("Cubemap", Cube) = "white" {}
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}
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SubShader {
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Pass {
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Tags {
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"Queue"="Background"
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"RenderType"="Background"
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}
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Cull Off ZWrite On 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_nicest
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#pragma glsl
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#pragma target 3.0
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#pragma multi_compile MARMO_BOX_PROJECTION_OFF MARMO_BOX_PROJECTION_ON
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#if MARMO_BOX_PROJECTION_ON
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#define MARMO_BOX_PROJECTION
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#endif
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#pragma multi_compile MARMO_SKY_BLEND_OFF MARMO_SKY_BLEND_ON
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#if MARMO_SKY_BLEND_ON
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#define MARMO_SKY_BLEND
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#endif
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#pragma multi_compile MARMO_RGBM_INPUT_ON MARMO_RGBM_INPUT_OFF
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#pragma multi_compile MARMO_RGBM_OUTPUT_ON MARMO_RGBM_OUTPUT_OFF
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samplerCUBE _CubeHDR;
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#include "UnityCG.cginc"
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#include "../MarmosetCore.cginc"
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struct appdata_t {
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float4 vertex : POSITION;
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float3 texcoord : TEXCOORD0;
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};
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struct v2f {
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float4 vertex : POSITION;
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float3 texcoord : TEXCOORD0;
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};
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v2f vert (appdata_t v) {
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v2f o;
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o.vertex = UnityObjectToClipPos(v.vertex);
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o.texcoord = v.vertex;
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//o.texcoord = v.texcoord;
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return o;
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}
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//Forces gamma-space rendering to still return linear values from sRGB textures.
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//Call on textures that do NOT bypass sRGB sampling.
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half4 forceLinear3(half4 c) {
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c.rgb = lerp(sRGBToLinear3(c.rgb), c.rgb, IS_LINEAR);
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return c;
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}
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half4 frag (v2f i) : COLOR {
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float3 dir = mulVec3(_SkyMatrix, i.texcoord);
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float4 col = texCUBE(_CubeHDR, dir);
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col = forceLinear3(col);
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#if (MARMO_RGBM_INPUT_ON && MARMO_RGBM_OUTPUT_ON) || (MARMO_RGBM_INPUT_OFF && MARMO_RGBM_OUTPUT_OFF)
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// return col;
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#endif
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#if MARMO_RGBM_INPUT_ON
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col.rgb = fromRGBM(col);
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#endif
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#if MARMO_RGBM_OUTPUT_ON
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col = HDRtoRGBM(col);
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//output gets converted to sRGB by gamma correction, premptively undo it
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col.rgb = lerp(col.rgb, sRGBToLinear3(col.rgb), IS_LINEAR);
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#else
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col.a = 1.0;
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#endif
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return col;
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}
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ENDCG
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}
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}
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}
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