mirror of
https://github.com/muskit/H3VR-TNH-Quality-of-Life-Improvements.git
synced 2026-06-03 04:34:26 -07:00
95 lines
3.0 KiB
HLSL
95 lines
3.0 KiB
HLSL
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// Alloy Physical Shader Framework
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// Copyright 2013-2017 RUST LLC.
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// http://www.alloy.rustltd.com/
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/////////////////////////////////////////////////////////////////////////////////
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/// @file Light.cginc
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/// @brief Deferred light pass vertex & fragment shaders.
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/////////////////////////////////////////////////////////////////////////////////
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#ifndef ALLOY_SHADERS_DEFERRED_LIGHT_CGINC
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#define ALLOY_SHADERS_DEFERRED_LIGHT_CGINC
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#define A_DIRECT_LIGHTING_PASS
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#include "Assets/Alloy/Shaders/Framework/Deferred.cginc"
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unity_v2f_deferred aMainVertexShader(
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float4 vertex : POSITION,
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float3 normal : NORMAL)
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{
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return vert_deferred(vertex, normal);
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}
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#ifdef UNITY_HDR_ON
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half4
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#else
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fixed4
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#endif
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aMainFragmentShader(
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unity_v2f_deferred i) : SV_Target
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{
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ASurface s = aDeferredSurface(i);
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ADirect d = aNewDirect();
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float fadeDist = UnityComputeShadowFadeDistance(s.positionWorld, s.viewDepth);
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float4 lightCoord = 0.0f;
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float3 lightVector = 0.0f;
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half3 lightAxis = 0.0h;
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half range = 1.0h;
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half4 c = 0.0h;
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d.color = _LightColor.rgb;
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#ifndef DIRECTIONAL
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lightCoord = mul(unity_WorldToLight, float4(s.positionWorld, 1.0f));
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#endif
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#if defined(USING_DIRECTIONAL_LIGHT)
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lightVector = -_LightDir.xyz;
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d.shadow = UnityDeferredComputeShadow(s.positionWorld, fadeDist, s.screenUv);
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#if !defined(ALLOY_SUPPORT_REDLIGHTS) && defined(DIRECTIONAL_COOKIE)
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aLightCookie(d, tex2Dbias(_LightTexture0, float4(lightCoord.xy, 0, -8)));
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#endif
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#elif defined(POINT) || defined(POINT_COOKIE) || defined(SPOT)
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lightVector = _LightPos.xyz - s.positionWorld;
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lightAxis = normalize(unity_WorldToLight[1].xyz);
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range = rsqrt(_LightPos.w); // _LightPos.w = 1/r*r
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#if defined(SPOT)
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// negative bias because http://aras-p.info/blog/2010/01/07/screenspace-vs-mip-mapping/
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half4 cookie = tex2Dbias(_LightTexture0, float4(lightCoord.xy / lightCoord.w, 0, -8));
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cookie.a *= (lightCoord.w < 0.0f);
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aLightCookie(d, cookie);
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d.shadow = UnityDeferredComputeShadow(s.positionWorld, fadeDist, s.screenUv);
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#elif defined(POINT) || defined(POINT_COOKIE)
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d.shadow = UnityDeferredComputeShadow(-lightVector, fadeDist, s.screenUv);
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#if defined (POINT_COOKIE)
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aLightCookie(d, texCUBEbias(_LightTexture0, float4(lightCoord.xyz, -8)));
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#endif //POINT_COOKIE
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#endif //POINT || POINT_COOKIE
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A_UNITY_ATTENUATION(d, _LightTextureB0, lightVector, _LightPos.w)
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#endif
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#if !defined(ALLOY_SUPPORT_REDLIGHTS) || !defined(DIRECTIONAL_COOKIE)
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aAreaLight(d, s, _LightColor, lightAxis, lightVector, range);
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#else
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d.direction = lightVector;
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d.color *= redLightFunctionLegacy(_LightTexture0, s.positionWorld, s.normalWorld, s.viewDirWorld, d.direction);
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aDirectionalLight(d, s);
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#endif
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c.rgb = aHdrClamp(aDirectLighting(d, s));
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#ifdef UNITY_HDR_ON
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return c;
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#else
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return exp2(-c);
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#endif
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}
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#endif // ALLOY_SHADERS_DEFERRED_LIGHT_CGINC
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