409 lines
17 KiB
HLSL
409 lines
17 KiB
HLSL
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#ifndef POI_LIGHTING
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#define POI_LIGHTING
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int _LightingType;
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float _ForceLightDirection;
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float _ShadowStrength;
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float _OutlineShadowStrength;
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float _ShadowOffset;
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float3 _LightDirection;
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float _ForceShadowStrength;
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float _CastedShadowSmoothing;
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float _LightingIndirectContribution;
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float _AttenuationMultiplier;
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float _EnableLighting;
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float _LightingControlledUseLightColor;
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fixed _LightingStandardSmoothness;
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fixed _LightingStandardControlsToon;
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fixed _LightingMinLightBrightness;
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float _LightingUseShadowRamp;
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UNITY_DECLARE_TEX2D(_ToonRamp);
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fixed _LightingMonochromatic;
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uint _LightingNumRamps;
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UNITY_DECLARE_TEX2D_NOSAMPLER(_ToonRamp1);
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UNITY_DECLARE_TEX2D_NOSAMPLER(_ToonRamp2);
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half _LightingShadowStrength1;
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half _LightingShadowStrength2;
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half _ShadowOffset1;
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half _ShadowOffset2;
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fixed _LightingGradientStart;
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fixed _LightingGradientEnd;
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float3 _LightingStartColor;
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float3 _LightingEndColor;
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float _AOStrength;
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fixed _LightingDetailStrength;
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fixed _LightingAdditiveDetailStrength;
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fixed _LightingNoIndirectMultiplier;
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fixed _LightingNoIndirectThreshold;
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uint _LightingAdditiveType;
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fixed _LightingAdditiveGradientStart;
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fixed _LightingAdditiveGradientEnd;
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fixed _LightingAdditivePassthrough;
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/*
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UNITY_DECLARE_TEX2D_NOSAMPLER(_ToonRamp3);
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half _LightingShadowStrength3;
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half _ShadowOffset3;
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*/
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POI_TEXTURE_NOSAMPLER(_LightingDetailShadows);
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POI_TEXTURE_NOSAMPLER(_LightingAOTex);
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POI_TEXTURE_NOSAMPLER(_LightingShadowMask);
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/*
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* Standard stuff Start
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*/
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UnityLight CreateLight(float3 normal)
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{
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UnityLight light;
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light.dir = poiLight.direction;
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light.color = saturate(_LightColor0.rgb * lerp(1, poiLight.attenuation, _AttenuationMultiplier));
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light.ndotl = DotClamped(normal, poiLight.direction);
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return light;
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}
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float FadeShadows(float attenuation)
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{
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#if HANDLE_SHADOWS_BLENDING_IN_GI || ADDITIONAL_MASKED_DIRECTIONAL_SHADOWS
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// UNITY_LIGHT_ATTENUATION doesn't fade shadows for us.
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#if ADDITIONAL_MASKED_DIRECTIONAL_SHADOWS
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attenuation = lerp(1, poiLight.attenuation, _AttenuationMultiplier);
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#endif
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float viewZ = dot(_WorldSpaceCameraPos - poiMesh.worldPos, UNITY_MATRIX_V[2].xyz);
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float shadowFadeDistance = UnityComputeShadowFadeDistance(poiMesh.worldPos, viewZ);
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float shadowFade = UnityComputeShadowFade(shadowFadeDistance);
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float bakedAttenuation = UnitySampleBakedOcclusion(poiMesh.lightmapUV.xy, poiMesh.worldPos);
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attenuation = UnityMixRealtimeAndBakedShadows(
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attenuation, bakedAttenuation, shadowFade
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);
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#endif
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return attenuation;
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}
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void ApplySubtractiveLighting(inout UnityIndirect indirectLight)
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{
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#if SUBTRACTIVE_LIGHTING
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poiLight.attenuation = FadeShadows(lerp(1, poiLight.attenuation, _AttenuationMultiplier));
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float ndotl = saturate(dot(i.normal, _WorldSpaceLightPos0.xyz));
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float3 shadowedLightEstimate = ndotl * (1 - poiLight.attenuation) * _LightColor0.rgb;
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float3 subtractedLight = indirectLight.diffuse - shadowedLightEstimate;
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subtractedLight = max(subtractedLight, unity_ShadowColor.rgb);
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subtractedLight = lerp(subtractedLight, indirectLight.diffuse, _LightShadowData.x);
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indirectLight.diffuse = min(subtractedLight, indirectLight.diffuse);
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#endif
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}
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UnityIndirect CreateIndirectLight(float3 normal)
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{
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UnityIndirect indirectLight;
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indirectLight.diffuse = 0;
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indirectLight.specular = 0;
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#if defined(FORWARD_BASE_PASS)
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#if defined(LIGHTMAP_ON)
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indirectLight.diffuse = DecodeLightmap(UNITY_SAMPLE_TEX2D(unity_Lightmap, poiMesh.lightmapUV.xy));
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#if defined(DIRLIGHTMAP_COMBINED)
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float4 lightmapDirection = UNITY_SAMPLE_TEX2D_SAMPLER(
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unity_LightmapInd, unity_Lightmap, poiMesh.lightmapUV.xy
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);
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indirectLight.diffuse = DecodeDirectionalLightmap(
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indirectLight.diffuse, lightmapDirection, normal
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);
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#endif
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ApplySubtractiveLighting(indirectLight);
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#endif
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#if defined(DYNAMICLIGHTMAP_ON)
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float3 dynamicLightDiffuse = DecodeRealtimeLightmap(
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UNITY_SAMPLE_TEX2D(unity_DynamicLightmap, poiMesh.lightmapUV.zw)
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);
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#if defined(DIRLIGHTMAP_COMBINED)
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float4 dynamicLightmapDirection = UNITY_SAMPLE_TEX2D_SAMPLER(
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unity_DynamicDirectionality, unity_DynamicLightmap,
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poiMesh.lightmapUV.zw
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);
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indirectLight.diffuse += DecodeDirectionalLightmap(
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dynamicLightDiffuse, dynamicLightmapDirection, normal
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);
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#else
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indirectLight.diffuse += dynamicLightDiffuse;
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#endif
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#endif
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#if !defined(LIGHTMAP_ON) && !defined(DYNAMICLIGHTMAP_ON)
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#if UNITY_LIGHT_PROBE_PROXY_VOLUME
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if (unity_ProbeVolumeParams.x == 1)
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{
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indirectLight.diffuse = SHEvalLinearL0L1_SampleProbeVolume(
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float4(normal, 1), poiMesh.worldPos
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);
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indirectLight.diffuse = max(0, indirectLight.diffuse);
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#if defined(UNITY_COLORSPACE_GAMMA)
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indirectLight.diffuse = LinearToGammaSpace(indirectLight.diffuse);
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#endif
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}
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else
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{
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indirectLight.diffuse += max(0, ShadeSH9(float4(normal, 1)));
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}
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#else
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indirectLight.diffuse += max(0, ShadeSH9(float4(normal, 1)));
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#endif
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#endif
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float3 reflectionDir = reflect(-poiCam.viewDir, normal);
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Unity_GlossyEnvironmentData envData;
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envData.roughness = 1 - _LightingStandardSmoothness;
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envData.reflUVW = BoxProjection(
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reflectionDir, poiMesh.worldPos.xyz,
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unity_SpecCube0_ProbePosition,
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unity_SpecCube0_BoxMin, unity_SpecCube0_BoxMax
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);
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float3 probe0 = Unity_GlossyEnvironment(
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UNITY_PASS_TEXCUBE(unity_SpecCube0), unity_SpecCube0_HDR, envData
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);
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envData.reflUVW = BoxProjection(
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reflectionDir, poiMesh.worldPos.xyz,
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unity_SpecCube1_ProbePosition,
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unity_SpecCube1_BoxMin, unity_SpecCube1_BoxMax
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);
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#if UNITY_SPECCUBE_BLENDING
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float interpolator = unity_SpecCube0_BoxMin.w;
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UNITY_BRANCH
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if(interpolator < 0.99999)
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{
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float3 probe1 = Unity_GlossyEnvironment(
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UNITY_PASS_TEXCUBE_SAMPLER(unity_SpecCube1, unity_SpecCube0),
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unity_SpecCube0_HDR, envData
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);
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indirectLight.specular = lerp(probe1, probe0, interpolator);
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}
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else
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{
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indirectLight.specular = probe0;
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}
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#else
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indirectLight.specular = probe0;
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#endif
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float occlusion = lerp(1, POI2D_SAMPLER_PAN(_LightingAOTex, _MainTex, poiMesh.uv[_LightingAOTexUV], _LightingAOTexPan), _AOStrength);
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indirectLight.diffuse *= occlusion;
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indirectLight.diffuse = max(indirectLight.diffuse, _LightingMinLightBrightness);
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indirectLight.specular *= occlusion;
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#endif
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return indirectLight;
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}
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/*
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* Standard stuff End
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*/
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half PoiDiffuse(half NdotV, half NdotL, half LdotH)
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{
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half fd90 = 0.5 + 2 * LdotH * LdotH * SmoothnessToPerceptualRoughness(.5);
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// Two schlick fresnel term
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half lightScatter = (1 + (fd90 - 1) * Pow5(1 - NdotL));
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half viewScatter = (1 + (fd90 - 1) * Pow5(1 - NdotV));
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return lightScatter * viewScatter;
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}
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float3 ShadeSH9Indirect()
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{
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return ShadeSH9(half4(0.0, -1.0, 0.0, 1.0));
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}
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float3 ShadeSH9Direct()
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{
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return ShadeSH9(half4(0.0, 1.0, 0.0, 1.0));
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}
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float3 ShadeSH9Normal(float3 normalDirection)
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{
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return ShadeSH9(half4(normalDirection, 1.0));
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}
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half3 GetSHLength()
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{
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half3 x, x1;
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x.r = length(unity_SHAr);
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x.g = length(unity_SHAg);
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x.b = length(unity_SHAb);
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x1.r = length(unity_SHBr);
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x1.g = length(unity_SHBg);
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x1.b = length(unity_SHBb);
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return x + x1;
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}
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float3 calculateRealisticLighting(float4 colorToLight)
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{
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return UNITY_BRDF_PBS(1, 0, 0, _LightingStandardSmoothness,
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poiMesh.normals[1], poiCam.viewDir, CreateLight(poiMesh.normals[1]), CreateIndirectLight(poiMesh.normals[1]));
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}
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void calculateBasePassLighting()
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{
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#ifdef SIMPLE
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_LightingType = 1;
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_LightingIndirectContribution = 0.2;
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#endif
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float AOMap = 1;
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float3 lightColor = poiLight.color;
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#ifndef OUTLINE
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AOMap = POI2D_SAMPLER_PAN(_LightingAOTex, _MainTex, poiMesh.uv[_LightingAOTexUV], _LightingAOTexPan);
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#ifdef FORWARD_BASE_PASS
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//poiLight.color = saturate(_LightColor0.rgb) + saturate(ShadeSH9(normalize(unity_SHAr + unity_SHAg + unity_SHAb)));
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float3 magic = saturate(ShadeSH9(normalize(unity_SHAr + unity_SHAg + unity_SHAb)));
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float3 normalLight = saturate(_LightColor0.rgb);
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lightColor = saturate(magic * lerp(1, AOMap, _AOStrength) + normalLight);
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#endif
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#endif
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float3 grayscale_vector = float3(.33333, .33333, .33333);
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float3 ShadeSH9Plus = GetSHLength();
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float3 ShadeSH9Minus = ShadeSH9(float4(0, 0, 0, 1));
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poiLight.directLighting = saturate(lerp(ShadeSH9Plus, lightColor, 1 - _LightingIndirectContribution));
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poiLight.indirectLighting = saturate(ShadeSH9Minus);
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float3 directLighting = lerp(poiLight.directLighting, dot(poiLight.directLighting, float3(0.299, 0.587, 0.114)), _LightingMonochromatic);
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float3 indirectLighting = lerp(poiLight.indirectLighting, dot(poiLight.indirectLighting, float3(0.299, 0.587, 0.114)), _LightingMonochromatic);
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if (max(max(indirectLighting.x, indirectLighting.y), indirectLighting.z) <= _LightingNoIndirectThreshold && max(max(directLighting.x, directLighting.y), directLighting.z) >= 0)
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{
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indirectLighting = directLighting * _LightingNoIndirectMultiplier;
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}
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half4 shadowStrength = 1;
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#ifndef OUTLINE
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#ifndef SIMPLE
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shadowStrength = POI2D_SAMPLER_PAN(_LightingShadowMask, _MainTex, poiMesh.uv[_LightingShadowMaskUV], _LightingShadowMaskPan);
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#endif
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shadowStrength *= half4(_ShadowStrength, _LightingShadowStrength1, _LightingShadowStrength2, 0);
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#else
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shadowStrength = _OutlineShadowStrength;
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#endif
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float bw_lightColor = dot(lightColor, grayscale_vector);
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float bw_directLighting = (((poiLight.nDotL * 0.5 + 0.5) * bw_lightColor * lerp(1, poiLight.attenuation, _AttenuationMultiplier)) + dot(ShadeSH9Normal(poiMesh.normals[1]), grayscale_vector));
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float bw_bottomIndirectLighting = dot(ShadeSH9Minus, grayscale_vector);
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float bw_topIndirectLighting = dot(ShadeSH9Plus, grayscale_vector);
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float lightDifference = ((bw_topIndirectLighting + bw_lightColor) - bw_bottomIndirectLighting);
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fixed detailShadow = lerp(1, POI2D_SAMPLER_PAN(_LightingDetailShadows, _MainTex, poiMesh.uv[_LightingDetailShadowsUV], _LightingDetailShadowsPan), _LightingDetailStrength).r;
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poiLight.lightMap = smoothstep(0, lightDifference, bw_directLighting - bw_bottomIndirectLighting);
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poiLight.lightMap *= detailShadow;
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poiLight.rampedLightMap = lerp(1, UNITY_SAMPLE_TEX2D(_ToonRamp, poiLight.lightMap + _ShadowOffset), shadowStrength.r);
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UNITY_BRANCH
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if(_LightingNumRamps >= 2)
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{
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poiLight.rampedLightMap *= lerp(1, UNITY_SAMPLE_TEX2D_SAMPLER(_ToonRamp1, _ToonRamp, poiLight.lightMap + _ShadowOffset1), shadowStrength.g);
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}
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UNITY_BRANCH
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if(_LightingNumRamps >= 3)
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{
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poiLight.rampedLightMap *= lerp(1, UNITY_SAMPLE_TEX2D_SAMPLER(_ToonRamp2, _ToonRamp, poiLight.lightMap + _ShadowOffset2), shadowStrength.b);
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}
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UNITY_BRANCH
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if(_LightingStandardControlsToon)
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{
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float3 realisticLighting = calculateRealisticLighting(1);
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poiLight.rampedLightMap = UNITY_SAMPLE_TEX2D(_ToonRamp, (.5 + dot(realisticLighting, float3(.33333, .33333, .33333)) * .5) + _ShadowOffset);
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return;
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}
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UNITY_BRANCH
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if(_LightingType == 0)
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{
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poiLight.finalLighting = lerp(indirectLighting * lerp(1, AOMap, _AOStrength), directLighting, poiLight.rampedLightMap);
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}
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|
|
UNITY_BRANCH
|
||
|
|
if(_LightingType == 1)
|
||
|
|
{
|
||
|
|
poiLight.finalLighting = lerp(poiLight.rampedLightMap * directLighting * lerp(1, AOMap, _AOStrength), directLighting, poiLight.rampedLightMap);
|
||
|
|
}
|
||
|
|
UNITY_BRANCH
|
||
|
|
if(_LightingType == 3)
|
||
|
|
{
|
||
|
|
poiLight.finalLighting = lerp(saturate(directLighting * _LightingStartColor), saturate(indirectLighting * _LightingEndColor * lerp(1, AOMap, _AOStrength)), smoothstep(_LightingGradientStart, _LightingGradientEnd, 1 - poiLight.lightMap));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
float3 calculateNonImportantLighting(float attenuation, float attenuationDotNL, float3 albedo, float3 lightColor, half dotNL)
|
||
|
|
{
|
||
|
|
UNITY_BRANCH
|
||
|
|
if(_LightingAdditiveType == 0)
|
||
|
|
{
|
||
|
|
return lightColor * attenuationDotNL;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
fixed detailShadow = lerp(1, POI2D_SAMPLER_PAN(_LightingDetailShadows, _MainTex, poiMesh.uv[_LightingDetailShadowsUV], _LightingDetailShadowsPan), _LightingAdditiveDetailStrength).r;
|
||
|
|
return lerp(lightColor * attenuation, lightColor * _LightingAdditivePassthrough * attenuation, smoothstep(_LightingAdditiveGradientStart, _LightingAdditiveGradientEnd, dotNL)) * detailShadow;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
float3 calculateLighting(float3 albedo)
|
||
|
|
{
|
||
|
|
#ifdef SIMPLE
|
||
|
|
_LightingType = 1;
|
||
|
|
#endif
|
||
|
|
#ifdef FORWARD_BASE_PASS
|
||
|
|
calculateBasePassLighting();
|
||
|
|
|
||
|
|
#ifdef VERTEXLIGHT_ON
|
||
|
|
poiLight.vFinalLighting = 0;
|
||
|
|
|
||
|
|
for (int index = 0; index < 4; index ++)
|
||
|
|
{
|
||
|
|
poiLight.vFinalLighting += calculateNonImportantLighting(poiLight.vAttenuation[index], poiLight.vAttenuationDotNL[index], albedo, poiLight.vColor[index], poiLight.vCorrectedDotNL[index]);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
#else
|
||
|
|
#if defined(POINT) || defined(SPOT)
|
||
|
|
#ifndef SIMPLE
|
||
|
|
fixed detailShadow = lerp(1, POI2D_SAMPLER_PAN(_LightingDetailShadows, _MainTex, poiMesh.uv[_LightingDetailShadowsUV], _LightingDetailShadowsPan), _LightingAdditiveDetailStrength).r;
|
||
|
|
UNITY_BRANCH
|
||
|
|
if(_LightingAdditiveType == 0)
|
||
|
|
{
|
||
|
|
return poiLight.color * poiLight.attenuation * max(0, poiLight.nDotL) * detailShadow;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return lerp(poiLight.color * max(poiLight.additiveShadow, _LightingAdditivePassthrough), poiLight.color * _LightingAdditivePassthrough, smoothstep(_LightingAdditiveGradientStart, _LightingAdditiveGradientEnd, 1 - (.5 * poiLight.nDotL + .5))) * poiLight.attenuation * detailShadow;
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
poiLight.finalLighting = poiLight.color * poiLight.attenuation;
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef FORWARD_BASE_PASS
|
||
|
|
UNITY_BRANCH
|
||
|
|
if(_LightingType == 2)
|
||
|
|
{
|
||
|
|
float3 realisticLighting = calculateRealisticLighting(finalColor).rgb;
|
||
|
|
return lerp(realisticLighting, dot(realisticLighting, float3(0.299, 0.587, 0.114)), _LightingMonochromatic);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return max(poiLight.finalLighting, _LightingMinLightBrightness);
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
return max(poiLight.finalLighting, _LightingMinLightBrightness);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
#endif
|