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312 行
8.6 KiB
312 行
8.6 KiB
Shader "Hidden/Internal-Obscurity" {
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Properties {
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_LightTexture0 ("", any) = "" {}
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_ShadowMapTexture ("", any) = "" {}
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_SrcBlend ("", Float) = 1
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_DstBlend ("", Float) = 1
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}
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SubShader {
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Pass
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{
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ZWrite Off
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ZTest Always
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Cull Off
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Blend Off
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//Blend [_SrcBlend] [_DstBlend]
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CGPROGRAM
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#pragma target 5.0
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#pragma vertex vert
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#pragma fragment frag
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//#include "UnityCG.cginc"
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//#include "UnityPBSLighting.cginc"
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//#include "UnityDeferredLibrary.cginc"
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#include "UnityCG.cginc"
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#include "UnityStandardBRDF.cginc"
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#include "UnityStandardUtils.cginc"
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#include "UnityPBSLighting.cginc"
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#include "..\common\ShaderBase.h"
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#include "LightDefinitions.cs"
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uniform float4x4 g_mViewToWorld;
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uniform float4x4 g_mInvScrProjection;
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uniform float4x4 g_mScrProjection;
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uniform float g_flipVertical; // giant temp hack, see DoTiledDeferredLighting()
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Texture2D _CameraDepthTexture;
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Texture2D _CameraGBufferTexture0;
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Texture2D _CameraGBufferTexture1;
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Texture2D _CameraGBufferTexture2;
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//UNITY_DECLARE_TEX2D(_LightTextureB0);
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sampler2D _LightTextureB0;
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UNITY_DECLARE_TEX2DARRAY(_spotCookieTextures);
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UNITY_DECLARE_TEXCUBEARRAY(_pointCookieTextures);
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StructuredBuffer<uint> g_vLightList;
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StructuredBuffer<SFiniteLightData> g_vLightData;
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float GetLinearDepth(float3 vP)
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{
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Vec3 var = 1.0;
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//float4 v4Pres = mul(float4(vP,1.0), g_mInvScrProjection);
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float4 v4Pres = mul(g_mInvScrProjection, float4(vP,1.0));
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return v4Pres.z / v4Pres.w;
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}
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float3 GetViewPosFromLinDepth(float2 v2ScrPos, float fLinDepth)
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{
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float fSx = g_mScrProjection[0].x;
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//float fCx = g_mScrProjection[2].x;
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float fCx = g_mScrProjection[0].z;
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float fSy = g_mScrProjection[1].y;
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//float fCy = g_mScrProjection[2].y;
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float fCy = g_mScrProjection[1].z;
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#ifdef LEFT_HAND_COORDINATES
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return fLinDepth*float3( ((v2ScrPos.x-fCx)/fSx), ((v2ScrPos.y-fCy)/fSy), 1.0 );
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#else
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return fLinDepth*float3( -((v2ScrPos.x+fCx)/fSx), -((v2ScrPos.y+fCy)/fSy), 1.0 );
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#endif
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}
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uint FetchLightCount(const uint tileOffs)
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{
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return g_vLightList[ 16*tileOffs + 0]&0xffff;
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}
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uint FetchIndex(const uint tileOffs, const uint l)
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{
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const uint l1 = l+1;
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return (g_vLightList[ 16*tileOffs + (l1>>1)]>>((l1&1)*16))&0xffff;
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}
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float3 ExecuteLightList(uint2 pixCoord, const uint offs);
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float3 OverlayHeatMap(uint uNumLights, float3 c);
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struct v2f {
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float4 vertex : SV_POSITION;
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float2 texcoord : TEXCOORD0;
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};
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v2f vert (float4 vertex : POSITION, float2 texcoord : TEXCOORD0)
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{
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v2f o;
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o.vertex = UnityObjectToClipPos(vertex);
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o.texcoord = texcoord.xy;
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return o;
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}
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half4 frag (v2f i) : SV_Target
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{
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uint2 pixCoord = ((uint2) i.vertex.xy);
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uint iWidth;
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uint iHeight;
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_CameraDepthTexture.GetDimensions(iWidth, iHeight);
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uint nrTilesX = (iWidth+15)/16;
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uint nrTilesY = (iHeight+15)/16;
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if (g_flipVertical > 0)
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pixCoord.y = (iHeight-1) - pixCoord.y;
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uint2 tileIDX = pixCoord / 16;
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const int offs = tileIDX.y*nrTilesX+tileIDX.x;
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float3 c = ExecuteLightList(pixCoord, offs);
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//c = OverlayHeatMap(FetchLightCount(offs), c);
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return float4(c,1.0);
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//return float4(pow(c,1/2.2),1.0);
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}
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struct UnityStandardData
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{
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float3 specularColor;
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float3 diffuseColor;
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float3 normalWorld;
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float smoothness;
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};
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UnityStandardData UnityStandardDataFromGbuffer(float4 gbuffer0, float4 gbuffer1, float4 gbuffer2)
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{
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UnityStandardData data;
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data.normalWorld = normalize(2*gbuffer2.xyz-1);
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data.smoothness = gbuffer1.a;
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data.diffuseColor = gbuffer0.xyz; data.specularColor = gbuffer1.xyz;
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float ao = gbuffer0.a;
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return data;
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}
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float3 ExecuteLightList(uint2 pixCoord, const uint offs)
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{
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float3 v3ScrPos = float3(pixCoord.x+0.5, pixCoord.y+0.5, FetchDepth(_CameraDepthTexture, pixCoord.xy).x);
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float linDepth = GetLinearDepth(v3ScrPos);
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float3 vP = GetViewPosFromLinDepth(v3ScrPos.xy, linDepth);
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float3 vWSpaceVDir = normalize(mul((float3x3) g_mViewToWorld, -vP).xyz); //unity_CameraToWorld
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float4 gbuffer0 = _CameraGBufferTexture0.Load( uint3(pixCoord.xy, 0) );
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float4 gbuffer1 = _CameraGBufferTexture1.Load( uint3(pixCoord.xy, 0) );
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float4 gbuffer2 = _CameraGBufferTexture2.Load( uint3(pixCoord.xy, 0) );
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UnityStandardData data = UnityStandardDataFromGbuffer(gbuffer0, gbuffer1, gbuffer2);
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float oneMinusReflectivity = 1.0 - SpecularStrength(data.specularColor.rgb);
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UnityIndirect ind;
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UNITY_INITIALIZE_OUTPUT(UnityIndirect, ind);
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ind.diffuse = 0;
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ind.specular = 0;
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float3 ints = 0;
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const uint uNrLights = FetchLightCount(offs);
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uint l=0;
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// we need this outer loop for when we cannot assume a wavefront is 64 wide
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// since in this case we cannot assume the lights will remain sorted by type
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// during processing in lightlist_cs.hlsl
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#if !defined(XBONE) && !defined(PLAYSTATION4)
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while(l<uNrLights)
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#endif
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{
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uint uIndex = l<uNrLights ? FetchIndex(offs, l) : 0;
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uint uLgtType = l<uNrLights ? g_vLightData[uIndex].uLightType : 0;
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// specialized loop for spot lights
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while(l<uNrLights && uLgtType==SPOT_LIGHT)
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{
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SFiniteLightData lgtDat = g_vLightData[uIndex];
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float3 vLp = lgtDat.vLpos.xyz;
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float3 toLight = vLp - vP;
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float dist = length(toLight);
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float3 vL = toLight / dist;
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float attLookUp = dist*lgtDat.fRecipRange; attLookUp *= attLookUp;
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float atten = tex2Dlod(_LightTextureB0, float4(attLookUp.rr, 0.0, 0.0)).UNITY_ATTEN_CHANNEL;
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// spot attenuation
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const float fProjVec = -dot(vL, lgtDat.vLaxisZ.xyz); // spotDir = lgtDat.vLaxisZ.xyz
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float2 cookCoord = (-lgtDat.cotan)*float2( dot(vL, lgtDat.vLaxisX.xyz), dot(vL, lgtDat.vLaxisY.xyz) ) / fProjVec;
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const bool bHasCookie = (lgtDat.flags&IS_CIRCULAR_SPOT_SHAPE)==0; // all square spots have cookies
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float d0=0.65, angularAtt = smoothstep(0.0, 1.0-d0, 1.0-length(cookCoord));
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[branch]if(bHasCookie)
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{
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cookCoord = cookCoord*0.5 + 0.5;
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angularAtt = UNITY_SAMPLE_TEX2DARRAY_LOD(_spotCookieTextures, float3(cookCoord, lgtDat.iSliceIndex), 0.0).w;
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}
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atten *= angularAtt*(fProjVec>0.0); // finally apply this to the dist att.
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UnityLight light;
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light.color.xyz = lgtDat.vCol.xyz*atten;
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light.dir.xyz = mul((float3x3) g_mViewToWorld, vL).xyz; //unity_CameraToWorld
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light.ndotl = LambertTerm(data.normalWorld, light.dir.xyz);
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ints += UNITY_BRDF_PBS (data.diffuseColor, data.specularColor, oneMinusReflectivity, data.smoothness, data.normalWorld, vWSpaceVDir, light, ind);
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++l; uIndex = l<uNrLights ? FetchIndex(offs, l) : 0;
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uLgtType = l<uNrLights ? g_vLightData[uIndex].uLightType : 0;
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}
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// specialized loop for sphere lights
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while(l<uNrLights && uLgtType==SPHERE_LIGHT)
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{
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SFiniteLightData lgtDat = g_vLightData[uIndex];
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float3 vLp = lgtDat.vLpos.xyz;
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float3 toLight = vLp - vP;
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float dist = length(toLight);
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float3 vL = toLight / dist;
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float3 vLw = mul((float3x3) g_mViewToWorld, vL).xyz; //unity_CameraToWorld
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float attLookUp = dist*lgtDat.fRecipRange; attLookUp *= attLookUp;
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float atten = tex2Dlod(_LightTextureB0, float4(attLookUp.rr, 0.0, 0.0)).UNITY_ATTEN_CHANNEL;
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const bool bHasCookie = (lgtDat.flags&HAS_COOKIE_TEXTURE)!=0;
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[branch]if(bHasCookie)
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{
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atten *= UNITY_SAMPLE_TEXCUBEARRAY_LOD(_pointCookieTextures, float4(-vLw, lgtDat.iSliceIndex), 0.0).w;
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}
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UnityLight light;
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light.color.xyz = lgtDat.vCol.xyz*atten;
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light.dir.xyz = vLw;
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light.ndotl = LambertTerm(data.normalWorld, vLw);
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ints += UNITY_BRDF_PBS (data.diffuseColor, data.specularColor, oneMinusReflectivity, data.smoothness, data.normalWorld, vWSpaceVDir, light, ind);
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++l; uIndex = l<uNrLights ? FetchIndex(offs, l) : 0;
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uLgtType = l<uNrLights ? g_vLightData[uIndex].uLightType : 0;
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}
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#if !defined(XBONE) && !defined(PLAYSTATION4)
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//if(uLgtType>=MAX_TYPES) ++l;
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if(uLgtType!=SPOT_LIGHT && uLgtType!=SPHERE_LIGHT) ++l;
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#endif
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}
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return ints;
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}
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float3 OverlayHeatMap(uint uNumLights, float3 c)
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{
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/////////////////////////////////////////////////////////////////////
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//
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const float4 kRadarColors[12] =
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{
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float4(0.0,0.0,0.0,0.0), // black
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float4(0.0,0.0,0.6,0.5), // dark blue
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float4(0.0,0.0,0.9,0.5), // blue
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float4(0.0,0.6,0.9,0.5), // light blue
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float4(0.0,0.9,0.9,0.5), // cyan
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float4(0.0,0.9,0.6,0.5), // blueish green
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float4(0.0,0.9,0.0,0.5), // green
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float4(0.6,0.9,0.0,0.5), // yellowish green
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float4(0.9,0.9,0.0,0.5), // yellow
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float4(0.9,0.6,0.0,0.5), // orange
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float4(0.9,0.0,0.0,0.5), // red
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float4(1.0,0.0,0.0,0.9) // strong red
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};
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float fMaxNrLightsPerTile = 24;
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int nColorIndex = uNumLights==0 ? 0 : (1 + (int) floor(10 * (log2((float)uNumLights) / log2(fMaxNrLightsPerTile))) );
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nColorIndex = nColorIndex<0 ? 0 : nColorIndex;
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float4 col = nColorIndex>11 ? float4(1.0,1.0,1.0,1.0) : kRadarColors[nColorIndex];
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return lerp(c, pow(col.xyz, 2.2), 0.3*col.w);
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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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