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isolated reflection probes to a template as well and isolated all global params to being set from one function 

isolated reflection probes to a template as well and isolated all global
params to being set from one function.
/main
mmikk 8 年前
当前提交
91cb86e4
共有 9 个文件被更改，包括 286 次插入 和 351 次删除
  1. 111
      Assets/ScriptableRenderLoop/fptl/FptlLighting.cs
  2. 321
      Assets/ScriptableRenderLoop/fptl/Internal-DeferredReflections.shader
  3. 7
      Assets/ScriptableRenderLoop/fptl/Internal-DeferredShading.shader
  4. 4
      Assets/ScriptableRenderLoop/fptl/LightingTemplate.hlsl
  5. 6
      Assets/ScriptableRenderLoop/fptl/TiledLightingUtils.hlsl
  6. 12
      Assets/ScriptableRenderLoop/fptl/UnityStandardForwardNew.cginc
  7. 2
      Assets/ScriptableRenderLoop/fptl/lightlistbuild-clustered.compute
  8. 151
      Assets/ScriptableRenderLoop/fptl/ReflectionTemplate.hlsl
  9. 23
      Assets/ScriptableRenderLoop/fptl/TiledReflectionTemplate.hlsl

111
Assets/ScriptableRenderLoop/fptl/FptlLighting.cs
查看文件


cmd.Dispose();
}
void DoTiledDeferredLighting(Camera camera, RenderLoop loop, Matrix4x4 viewToWorld, Matrix4x4 scrProj, Matrix4x4 incScrProj, ComputeBuffer lightList, int numDirLights)
void DoTiledDeferredLighting(Camera camera, RenderLoop loop)
cmd.SetGlobalFloat("g_nNumDirLights", numDirLights);
m_DeferredMaterial.SetBuffer("g_vLightList", lightList);
m_DeferredReflectionMaterial.SetBuffer("g_vLightList", lightList);
m_DeferredReflectionMaterial.EnableKeyword(bUseClusteredForDeferred ? "USE_CLUSTERED_LIGHTLIST" : "USE_FPTL_LIGHTLIST");
//m_DeferredMaterial.SetBuffer("g_vLightData", m_lightDataBuffer);
//m_DeferredReflectionMaterial.SetBuffer("g_vLightData", m_lightDataBuffer);
cmd.SetGlobalBuffer("g_vLightData", m_lightDataBuffer);
//m_DeferredMaterial.SetBuffer("g_dirLightData", m_dirLightList);
cmd.SetGlobalBuffer("g_dirLightData", m_dirLightList);
cmd.SetGlobalFloat("g_widthRT", (float) camera.pixelWidth);
cmd.SetGlobalFloat("g_heightRT", (float) camera.pixelHeight);
cmd.SetGlobalMatrix("g_mViewToWorld", viewToWorld);
cmd.SetGlobalMatrix("g_mWorldToView", viewToWorld.inverse);
cmd.SetGlobalMatrix("g_mScrProjection", scrProj);
cmd.SetGlobalMatrix("g_mInvScrProjection", incScrProj);
// Shadow constants
cmd.SetGlobalMatrixArray("g_matWorldToShadow", g_matWorldToShadow);
cmd.SetGlobalVectorArray("g_vDirShadowSplitSpheres", g_vDirShadowSplitSpheres);
cmd.SetGlobalVector("g_vShadow3x3PCFTerms0", g_vShadow3x3PCFTerms[0]);
cmd.SetGlobalVector("g_vShadow3x3PCFTerms1", g_vShadow3x3PCFTerms[1]);
cmd.SetGlobalVector("g_vShadow3x3PCFTerms2", g_vShadow3x3PCFTerms[2]);
cmd.SetGlobalVector("g_vShadow3x3PCFTerms3", g_vShadow3x3PCFTerms[3]);
//cmd.Blit (kGBufferNormal, (RenderTexture)null); // debug: display normals

}
}
m_dirLightList.SetData(lights.ToArray());
m_DeferredMaterial.SetInt("g_nDirLights", dirLightCount);
return dirLightCount;
}

if(EnableClustered) VoxelLightListGeneration(cmd, camera, numLights, projscr, invProjscr);
cmd.SetGlobalTexture("_spotCookieTextures", m_cookieTexArray.GetTexCache());
cmd.SetGlobalTexture("_pointCookieTextures", m_cubeCookieTexArray.GetTexCache());
cmd.SetGlobalTexture("_reflCubeTextures", m_cubeReflTexArray.GetTexCache());
//m_DeferredMaterial.SetTexture("_spotCookieTextures", m_cookieTexArray.GetTexCache());
//m_DeferredMaterial.SetTexture("_pointCookieTextures", m_cubeCookieTexArray.GetTexCache());
//m_DeferredReflectionMaterial.SetTexture("_reflCubeTextures", m_cubeReflTexArray.GetTexCache());
loop.ExecuteCommandBuffer(cmd);
cmd.Dispose();

DoTiledDeferredLighting(camera, loop, camera.cameraToWorldMatrix, projscr, invProjscr, lightList, numDirLights);
// Push all global params
PushGlobalParams(camera, loop, camera.cameraToWorldMatrix, projscr, invProjscr, numDirLights);
// do deferred lighting
DoTiledDeferredLighting(camera, loop);
// don't have a depth pre-pass for forward lit meshes so have to require clustered for now
if(EnableClustered) RenderForward(cullResults, camera, loop, false);

int nrTilesX = (camera.pixelWidth + 15) / 16;
int nrTilesY = (camera.pixelHeight + 15) / 16;
cmd.ComputeDispatch(m_BuildPerVoxelLightListShader, kGenListPerVoxelKernel, nrTilesX, nrTilesY, 1);
}
cmd.SetGlobalFloat("g_fClustScale", m_clustScale);
cmd.SetGlobalFloat("g_fClustBase", m_clustLogBase);
cmd.SetGlobalFloat("g_fNearPlane", camera.nearClipPlane);
cmd.SetGlobalFloat("g_fFarPlane", camera.farClipPlane);
cmd.SetGlobalFloat("g_fLog2NumClusters", (float) g_iLog2NumClusters);
void PushGlobalParams(Camera camera, RenderLoop loop, Matrix4x4 viewToWorld, Matrix4x4 scrProj, Matrix4x4 incScrProj, int numDirLights)
{
var cmd = new CommandBuffer();
cmd.name = "Push Global Parameters";
cmd.SetGlobalFloat("g_isLogBaseBufferEnabled", gUseDepthBuffer ? 1 : 0);
cmd.SetGlobalMatrix("g_mViewToWorld", viewToWorld);
cmd.SetGlobalMatrix("g_mWorldToView", viewToWorld.inverse);
cmd.SetGlobalMatrix("g_mScrProjection", scrProj);
cmd.SetGlobalMatrix("g_mInvScrProjection", incScrProj);
cmd.SetGlobalBuffer("g_vLightData", m_lightDataBuffer);
cmd.SetGlobalTexture("_spotCookieTextures", m_cookieTexArray.GetTexCache());
cmd.SetGlobalTexture("_pointCookieTextures", m_cubeCookieTexArray.GetTexCache());
cmd.SetGlobalTexture("_reflCubeTextures", m_cubeReflTexArray.GetTexCache());
if(EnableClustered)
{
cmd.SetGlobalFloat("g_fClustScale", m_clustScale);
cmd.SetGlobalFloat("g_fClustBase", m_clustLogBase);
cmd.SetGlobalFloat("g_fNearPlane", camera.nearClipPlane);
cmd.SetGlobalFloat("g_fFarPlane", camera.farClipPlane);
cmd.SetGlobalFloat("g_fLog2NumClusters", (float) g_iLog2NumClusters);
cmd.SetGlobalFloat("g_isLogBaseBufferEnabled", gUseDepthBuffer ? 1 : 0);
cmd.SetGlobalBuffer("g_vLayeredOffsetsBuffer", m_perVoxelOffset);
//m_DeferredMaterial.SetBuffer("g_vLayeredOffsetsBuffer", m_perVoxelOffset);
//m_DeferredReflectionMaterial.SetBuffer("g_vLayeredOffsetsBuffer", m_perVoxelOffset);
if(gUseDepthBuffer)
{
//m_DeferredMaterial.SetBuffer("g_logBaseBuffer", m_perTileLogBaseTweak);
//m_DeferredReflectionMaterial.SetBuffer("g_logBaseBuffer", m_perTileLogBaseTweak);
cmd.SetGlobalBuffer("g_logBaseBuffer", m_perTileLogBaseTweak);
cmd.SetGlobalBuffer("g_vLayeredOffsetsBuffer", m_perVoxelOffset);
if(gUseDepthBuffer) cmd.SetGlobalBuffer("g_logBaseBuffer", m_perTileLogBaseTweak);
cmd.SetGlobalFloat("g_nNumDirLights", numDirLights);
cmd.SetGlobalBuffer("g_dirLightData", m_dirLightList);
// Shadow constants
cmd.SetGlobalMatrixArray("g_matWorldToShadow", g_matWorldToShadow);
cmd.SetGlobalVectorArray("g_vDirShadowSplitSpheres", g_vDirShadowSplitSpheres);
cmd.SetGlobalVector("g_vShadow3x3PCFTerms0", g_vShadow3x3PCFTerms[0]);
cmd.SetGlobalVector("g_vShadow3x3PCFTerms1", g_vShadow3x3PCFTerms[1]);
cmd.SetGlobalVector("g_vShadow3x3PCFTerms2", g_vShadow3x3PCFTerms[2]);
cmd.SetGlobalVector("g_vShadow3x3PCFTerms3", g_vShadow3x3PCFTerms[3]);
loop.ExecuteCommandBuffer(cmd);
cmd.Dispose();
}
}
}

321
Assets/ScriptableRenderLoop/fptl/Internal-DeferredReflections.shader
查看文件


#pragma vertex vert
#pragma fragment frag
#include "UnityCG.cginc"
#include "UnityStandardBRDF.cginc"
#include "UnityStandardUtils.cginc"
#include "UnityPBSLighting.cginc"
#pragma multi_compile USE_FPTL_LIGHTLIST USE_CLUSTERED_LIGHTLIST
#include "UnityLightingCommon.cginc"
float3 EvalIndirectSpecular(UnityLight light, UnityIndirect ind);
#include "..\common\ShaderBase.h"
#include "LightDefinitions.cs.hlsl"
// uses the optimized single layered light list for opaques only
#ifdef USE_FPTL_LIGHTLIST
#define OPAQUES_ONLY
#endif
#include "TiledReflectionTemplate.hlsl"
uniform float4x4 g_mViewToWorld;
uniform float4x4 g_mWorldToView;
uniform float4x4 g_mInvScrProjection;
uniform float4x4 g_mScrProjection;
Texture2D _CameraDepthTexture;
Texture2D _CameraGBufferTexture0;

UNITY_DECLARE_TEXCUBEARRAY(_reflCubeTextures);
StructuredBuffer<uint> g_vLightList;
StructuredBuffer<SFiniteLightData> g_vLightData;
float GetLinearDepth(float zDptBufSpace) // 0 is near 1 is far
{
float3 vP = float3(0.0f,0.0f,zDptBufSpace);
float4 v4Pres = mul(g_mInvScrProjection, float4(vP,1.0));
return v4Pres.z / v4Pres.w;
}
float3 GetViewPosFromLinDepth(float2 v2ScrPos, float fLinDepth)
{
float fSx = g_mScrProjection[0].x;
//float fCx = g_mScrProjection[2].x;
float fCx = g_mScrProjection[0].z;
float fSy = g_mScrProjection[1].y;
//float fCy = g_mScrProjection[2].y;
float fCy = g_mScrProjection[1].z;
#ifdef LEFT_HAND_COORDINATES
return fLinDepth*float3( ((v2ScrPos.x-fCx)/fSx), ((v2ScrPos.y-fCy)/fSy), 1.0 );
#else
return fLinDepth*float3( -((v2ScrPos.x+fCx)/fSx), -((v2ScrPos.y+fCy)/fSy), 1.0 );
#endif
}
#ifdef USE_CLUSTERED_LIGHTLIST
uniform float g_fClustScale;
uniform float g_fClustBase;
uniform float g_fNearPlane;
uniform float g_fFarPlane;
//uniform int g_iLog2NumClusters; // numClusters = (1<<g_iLog2NumClusters)
uniform float g_fLog2NumClusters;
static int g_iLog2NumClusters;
Buffer<uint> g_vLayeredOffsetsBuffer;
#ifdef ENABLE_DEPTH_TEXTURE_BACKPLANE
Buffer<float> g_logBaseBuffer;
#endif
#include "ClusteredUtils.h"
void GetLightCountAndStart(out uint uStart, out uint uNrLights, uint2 tileIDX, int nrTilesX, int nrTilesY, float linDepth)
{
g_iLog2NumClusters = (int) (g_fLog2NumClusters+0.5); // ridiculous
#ifdef ENABLE_DEPTH_TEXTURE_BACKPLANE
float logBase = g_logBaseBuffer[tileIDX.y*nrTilesX + tileIDX.x];
#else
float logBase = g_fClustBase;
#endif
int clustIdx = SnapToClusterIdx(linDepth, logBase);
int nrClusters = (1<<g_iLog2NumClusters);
const int idx = ((REFLECTION_LIGHT*nrClusters + clustIdx)*nrTilesY + tileIDX.y)*nrTilesX + tileIDX.x;
uint dataPair = g_vLayeredOffsetsBuffer[idx];
uStart = dataPair&0x7ffffff;
uNrLights = (dataPair>>27)&31;
}
uint FetchIndex(const uint tileOffs, const uint l)
{
return g_vLightList[ tileOffs+l ];
}
#else
void GetLightCountAndStart(out uint uStart, out uint uNrLights, uint2 tileIDX, int nrTilesX, int nrTilesY, float linDepth)
{
const int tileOffs = (tileIDX.y+REFLECTION_LIGHT*nrTilesY)*nrTilesX+tileIDX.x;
uNrLights = g_vLightList[ 16*tileOffs + 0]&0xffff;
uStart = tileOffs;
}
uint FetchIndex(const uint tileOffs, const uint l)
{
const uint l1 = l+1;
return (g_vLightList[ 16*tileOffs + (l1>>1)]>>((l1&1)*16))&0xffff;
}
#endif
float3 OverlayHeatMap(uint uNumLights, float3 c);
struct v2f {

return o;
}
half4 frag (v2f i) : SV_Target
{
uint2 pixCoord = ((uint2) i.vertex.xy);
uint iWidth;
uint iHeight;
_CameraDepthTexture.GetDimensions(iWidth, iHeight);
uint nrTilesX = (iWidth+15)/16;
uint nrTilesY = (iHeight+15)/16;
uint2 tileIDX = pixCoord / 16;
float zbufDpth = FetchDepth(_CameraDepthTexture, pixCoord.xy).x;
float linDepth = GetLinearDepth(zbufDpth);
uint numLights=0, start=0;
GetLightCountAndStart(start, numLights, tileIDX, nrTilesX, nrTilesY, linDepth);
float3 c = ExecuteReflectionProbes(pixCoord, start, numLights, linDepth);
//c = OverlayHeatMap(numLights, c);
return float4(c,1.0);
}
struct StandardData
{

float occlusion;
};
struct LocalDataBRDF
{
StandardData gbuf;
// extras
float oneMinusReflectivity;
float3 Vworld;
};
static LocalDataBRDF g_localParams;
StandardData UnityStandardDataFromGbuffer(float4 gbuffer0, float4 gbuffer1, float4 gbuffer2)
{
StandardData data;

return data;
}
half3 distanceFromAABB(half3 p, half3 aabbMin, half3 aabbMax)
float3 EvalIndirectSpecular(UnityLight light, UnityIndirect ind)
return max(max(p - aabbMax, aabbMin - p), half3(0.0, 0.0, 0.0));
StandardData data = g_localParams.gbuf;
return data.occlusion * UNITY_BRDF_PBS(0, data.specularColor, g_localParams.oneMinusReflectivity, data.smoothness, data.normalWorld, g_localParams.Vworld, light, ind).rgb;
half3 Unity_GlossyEnvironment (UNITY_ARGS_TEXCUBEARRAY(tex), int sliceIndex, half4 hdr, Unity_GlossyEnvironmentData glossIn);
float3 ExecuteReflectionProbes(uint2 pixCoord, uint start, uint numLights, float linDepth)
half4 frag (v2f i) : SV_Target
float3 vP = GetViewPosFromLinDepth(float2(pixCoord.x+0.5, pixCoord.y+0.5), linDepth);
float3 worldPos = mul(g_mViewToWorld, float4(vP.xyz,1.0)).xyz; //unity_CameraToWorld
uint2 pixCoord = ((uint2) i.vertex.xy);
float3 vWSpaceVDir = normalize(mul((float3x3) g_mViewToWorld, -vP).xyz); //unity_CameraToWorld
float zbufDpth = FetchDepth(_CameraDepthTexture, pixCoord.xy).x;
float linDepth = GetLinearDepth(zbufDpth);
float3 vP = GetViewPosFromLinDepth(i.vertex.xy, linDepth);
float3 vPw = mul(g_mViewToWorld, float4(vP, 1)).xyz;
float3 Vworld = normalize(mul((float3x3) g_mViewToWorld, -vP).xyz); //unity_CameraToWorld
float4 gbuffer0 = _CameraGBufferTexture0.Load( uint3(pixCoord.xy, 0) );
float4 gbuffer1 = _CameraGBufferTexture1.Load( uint3(pixCoord.xy, 0) );

float oneMinusReflectivity = 1.0 - SpecularStrength(data.specularColor.rgb);
float3 worldNormalRefl = reflect(-vWSpaceVDir, data.normalWorld);
float3 vspaceRefl = mul((float3x3) g_mWorldToView, worldNormalRefl).xyz;
UnityLight light;
light.color = 0;
light.dir = 0;
float3 ints = 0;
uint l=0;
// we need this outer loop for when we cannot assume a wavefront is 64 wide
// since in this case we cannot assume the lights will remain sorted by type
// during processing in lightlist_cs.hlsl
#if !defined(XBONE) && !defined(PLAYSTATION4)
while(l<numLights)
#endif
{
uint uIndex = l<numLights ? FetchIndex(start, l) : 0;
uint uLgtType = l<numLights ? g_vLightData[uIndex].uLightType : 0;
// specialized loop for sphere lights
while(l<numLights && uLgtType==(uint) BOX_LIGHT)
{
SFiniteLightData lgtDat = g_vLightData[uIndex];
float3 vLp = lgtDat.vLpos.xyz;
float3 vecToSurfPos = vP - vLp; // vector from reflection volume to surface position in camera space
float3 posInReflVolumeSpace = float3( dot(vecToSurfPos, lgtDat.vLaxisX), dot(vecToSurfPos, lgtDat.vLaxisY), dot(vecToSurfPos, lgtDat.vLaxisZ) );
float blendDistance = lgtDat.fProbeBlendDistance;//unity_SpecCube1_ProbePosition.w; // will be set to blend distance for this probe
float3 sampleDir;
if((lgtDat.flags&IS_BOX_PROJECTED)!=0)
{
// For box projection, use expanded bounds as they are rendered; otherwise
// box projection artifacts when outside of the box.
//float4 boxMin = unity_SpecCube0_BoxMin - float4(blendDistance,blendDistance,blendDistance,0);
//float4 boxMax = unity_SpecCube0_BoxMax + float4(blendDistance,blendDistance,blendDistance,0);
//sampleDir = BoxProjectedCubemapDirection (worldNormalRefl, worldPos, unity_SpecCube0_ProbePosition, boxMin, boxMax);
float4 vBoxOuterDistance = float4( lgtDat.vBoxInnerDist + float3(blendDistance, blendDistance, blendDistance), 0.0 );
#if 0
// if rotation is NOT supported
sampleDir = BoxProjectedCubemapDirection(worldNormalRefl, posInReflVolumeSpace, float4(lgtDat.vLocalCubeCapturePoint, 1.0), -vBoxOuterDistance, vBoxOuterDistance);
#else
float3 volumeSpaceRefl = float3( dot(vspaceRefl, lgtDat.vLaxisX), dot(vspaceRefl, lgtDat.vLaxisY), dot(vspaceRefl, lgtDat.vLaxisZ) );
float3 vPR = BoxProjectedCubemapDirection(volumeSpaceRefl, posInReflVolumeSpace, float4(lgtDat.vLocalCubeCapturePoint, 1.0), -vBoxOuterDistance, vBoxOuterDistance); // Volume space corrected reflection vector
sampleDir = mul( (float3x3) g_mViewToWorld, vPR.x*lgtDat.vLaxisX + vPR.y*lgtDat.vLaxisY + vPR.z*lgtDat.vLaxisZ );
#endif
}
else
sampleDir = worldNormalRefl;
Unity_GlossyEnvironmentData g;
g.roughness = SmoothnessToPerceptualRoughness(data.smoothness);
g.reflUVW = sampleDir;
half3 env0 = Unity_GlossyEnvironment(UNITY_PASS_TEXCUBEARRAY(_reflCubeTextures), lgtDat.iSliceIndex, float4(lgtDat.fLightIntensity, lgtDat.fDecodeExp, 0.0, 0.0), g);
UnityIndirect ind;
ind.diffuse = 0;
ind.specular = env0 * data.occlusion;
half3 rgb = UNITY_BRDF_PBS(0, data.specularColor, oneMinusReflectivity, data.smoothness, data.normalWorld, vWSpaceVDir, light, ind).rgb;
// Calculate falloff value, so reflections on the edges of the Volume would gradually blend to previous reflection.
// Also this ensures that pixels not located in the reflection Volume AABB won't
// accidentally pick up reflections from this Volume.
//half3 distance = distanceFromAABB(worldPos, unity_SpecCube0_BoxMin.xyz, unity_SpecCube0_BoxMax.xyz);
half3 distance = distanceFromAABB(posInReflVolumeSpace, -lgtDat.vBoxInnerDist, lgtDat.vBoxInnerDist);
half falloff = saturate(1.0 - length(distance)/blendDistance);
ints = lerp(ints, rgb, falloff);
// next probe
++l; uIndex = l<numLights ? FetchIndex(start, l) : 0;
uLgtType = l<numLights ? g_vLightData[uIndex].uLightType : 0;
}
#if !defined(XBONE) && !defined(PLAYSTATION4)
if(uLgtType!=BOX_LIGHT) ++l;
#endif
}
return ints;
}
float3 OverlayHeatMap(uint uNumLights, float3 c)
{
/////////////////////////////////////////////////////////////////////
//
const float4 kRadarColors[12] =
{
float4(0.0,0.0,0.0,0.0), // black
float4(0.0,0.0,0.6,0.5), // dark blue
float4(0.0,0.0,0.9,0.5), // blue
float4(0.0,0.6,0.9,0.5), // light blue
float4(0.0,0.9,0.9,0.5), // cyan
float4(0.0,0.9,0.6,0.5), // blueish green
float4(0.0,0.9,0.0,0.5), // green
float4(0.6,0.9,0.0,0.5), // yellowish green
float4(0.9,0.9,0.0,0.5), // yellow
float4(0.9,0.6,0.0,0.5), // orange
float4(0.9,0.0,0.0,0.5), // red
float4(1.0,0.0,0.0,0.9) // strong red
};
float fMaxNrLightsPerTile = 24;
int nColorIndex = uNumLights==0 ? 0 : (1 + (int) floor(10 * (log2((float)uNumLights) / log2(fMaxNrLightsPerTile))) );
nColorIndex = nColorIndex<0 ? 0 : nColorIndex;
float4 col = nColorIndex>11 ? float4(1.0,1.0,1.0,1.0) : kRadarColors[nColorIndex];
return lerp(c, pow(col.xyz, 2.2), 0.3*col.w);
}
half3 Unity_GlossyEnvironment (UNITY_ARGS_TEXCUBEARRAY(tex), int sliceIndex, half4 hdr, Unity_GlossyEnvironmentData glossIn)
{
#if UNITY_GLOSS_MATCHES_MARMOSET_TOOLBAG2 && (SHADER_TARGET >= 30)
// TODO: remove pow, store cubemap mips differently
half perceptualRoughness = pow(glossIn.roughness, 3.0/4.0);
#else
half perceptualRoughness = glossIn.roughness; // MM: switched to this
#endif
//perceptualRoughness = sqrt(sqrt(2/(64.0+2))); // spec power to the square root of real roughness
#if 0
float m = perceptualRoughness*perceptualRoughness; // m is the real roughness parameter
const float fEps = 1.192092896e-07F; // smallest such that 1.0+FLT_EPSILON != 1.0 (+1e-4h is NOT good here. is visibly very wrong)
float n = (2.0/max(fEps, m*m))-2.0; // remap to spec power. See eq. 21 in --> https://dl.dropboxusercontent.com/u/55891920/papers/mm_brdf.pdf
n /= 4; // remap from n_dot_h formulatino to n_dot_r. See section "Pre-convolved Cube Maps vs Path Tracers" --> https://s3.amazonaws.com/docs.knaldtech.com/knald/1.0.0/lys_power_drops.html
perceptualRoughness = pow( 2/(n+2), 0.25); // remap back to square root of real roughness
#else
// MM: came up with a surprisingly close approximation to what the #if 0'ed out code above does.
perceptualRoughness = perceptualRoughness*(1.7 - 0.7*perceptualRoughness);
#endif
g_localParams.gbuf = data;
g_localParams.oneMinusReflectivity = 1.0 - SpecularStrength(data.specularColor.rgb);
g_localParams.Vworld = Vworld;
half mip = perceptualRoughness * UNITY_SPECCUBE_LOD_STEPS;
half4 rgbm = UNITY_SAMPLE_TEXCUBEARRAY_LOD(tex, float4(glossIn.reflUVW.xyz, sliceIndex), mip);
uint numReflectionsProcessed = 0;
float3 c = ExecuteReflectionListTiled(numReflectionsProcessed, pixCoord, vP, data.normalWorld, Vworld, data.smoothness);
//return rgbm.xyz;
return DecodeHDR_NoLinearSupportInSM2 (rgbm, hdr);
//c = OverlayHeatMap(numLightsProcessed, c);
return float4(c,1.0);
}

7
Assets/ScriptableRenderLoop/fptl/Internal-DeferredShading.shader
查看文件


#pragma multi_compile USE_FPTL_LIGHTLIST USE_CLUSTERED_LIGHTLIST
#include "UnityCG.cginc"
#include "UnityStandardBRDF.cginc"
#include "UnityStandardUtils.cginc"
#include "UnityPBSLighting.cginc"
#include "..\common\ShaderBase.h"
#include "UnityLightingCommon.cginc"
float3 EvalMaterial(UnityLight light, UnityIndirect ind);

4
Assets/ScriptableRenderLoop/fptl/LightingTemplate.hlsl
查看文件


#include "UnityStandardUtils.cginc"
#include "UnityPBSLighting.cginc"
#include "..\common\ShaderBase.h"
#include "LightDefinitions.cs.hlsl"
uniform uint g_nNumDirLights;

UNITY_DECLARE_TEX2DARRAY(_spotCookieTextures);
UNITY_DECLARE_TEXCUBEARRAY(_pointCookieTextures);
StructuredBuffer<SFiniteLightData> g_vLightData;
StructuredBuffer<DirectionalLight> g_dirLightData;

6
Assets/ScriptableRenderLoop/fptl/TiledLightingUtils.hlsl
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#define __TILEDLIGHTINGUTILS_H__
#include "..\common\ShaderBase.h"
#include "LightDefinitions.cs.hlsl"
uniform float4x4 g_mWorldToView; // used for reflection only
uniform float4x4 g_mScrProjection;
uniform float4x4 g_mInvScrProjection;

StructuredBuffer<SFiniteLightData> g_vLightData;
StructuredBuffer<uint> g_vLightListGlobal;
void GetCountAndStartOpaque(out uint uStart, out uint uNrLights, uint2 tileIDX, int nrTilesX, int nrTilesY, float linDepth, uint model)

12
Assets/ScriptableRenderLoop/fptl/UnityStandardForwardNew.cginc
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return UNITY_BRDF_PBS(gdata.diffColor, gdata.specColor, gdata.oneMinusReflectivity, gdata.smoothness, gdata.normalWorld, -gdata.eyeVec, light, ind);
}
float3 EvalIndirectSpecular(UnityLight light, UnityIndirect ind)
{
float occlusion = 1.0; // have none for now
return occlusion * UNITY_BRDF_PBS(gdata.diffColor, gdata.specColor, gdata.oneMinusReflectivity, gdata.smoothness, gdata.normalWorld, -gdata.eyeVec, light, ind);
}
#include "TiledLightingTemplate.hlsl"
#include "TiledLightingTemplate.hlsl"
#include "TiledReflectionTemplate.hlsl"
half4 fragForward(VertexOutputForwardNew i) : SV_Target

//half occlusion = Occlusion(i.tex.xy);
//UnityGI gi = FragmentGI (gdata, occlusion, i.ambientOrLightmapUV, atten, mainLight);
uint numLightsProcessed = 0;
uint numLightsProcessed = 0, numReflectionsProcessed = 0;
res += ExecuteReflectionListTiled(numReflectionsProcessed, pixCoord, vP, gdata.normalWorld, Vworld, gdata.smoothness);
// don't really have a handle on this yet
//UnityLight mainLight = MainLight ();

2
Assets/ScriptableRenderLoop/fptl/lightlistbuild-clustered.compute
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int i=iSwizzle + (2*(iSection&0x2)); // offset by 4 at section 2
vP0 = GetTileVertex(uint2(viTilLL.x, viTilUR.y), uint2(viTilUR.x, viTilLL.y), i, fTileFarPlane);
vE0 = iSection==0 ? vP0 : (((iSwizzle&0x2)==0 ? 1.0f : (-1.0f))*((iSwizzle&0x1)==(iSwizzle>>1) ? Vec3(1,0,0) : Vec3(0,1,0)));
vE0 = iSection==0 ? vP0 : (((iSwizzle&0x2)==0 ? 1.0f : (-1.0f))*((iSwizzle&0x1)==(iSwizzle>>1) ? float3(1,0,0) : float3(0,1,0)));
}
int CullByExactEdgeTests(uint threadID, int iNrCoarseLights, uint2 viTilLL, uint2 viTilUR, float fTileFarPlane)

151
Assets/ScriptableRenderLoop/fptl/ReflectionTemplate.hlsl
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#ifndef __REFLECTIONTEMPLATE_H__
#define __REFLECTIONTEMPLATE_H__
#include "UnityCG.cginc"
#include "UnityStandardBRDF.cginc"
#include "UnityStandardUtils.cginc"
#include "UnityPBSLighting.cginc"
UNITY_DECLARE_TEXCUBEARRAY(_reflCubeTextures);
half3 Unity_GlossyEnvironment (UNITY_ARGS_TEXCUBEARRAY(tex), int sliceIndex, half4 hdr, Unity_GlossyEnvironmentData glossIn);
half3 distanceFromAABB(half3 p, half3 aabbMin, half3 aabbMax)
{
return max(max(p - aabbMax, aabbMin - p), half3(0.0, 0.0, 0.0));
}
float3 ExecuteReflectionList(uint start, uint numReflProbes, float3 vP, float3 vNw, float3 Vworld, float smoothness)
{
float3 worldNormalRefl = reflect(-Vworld, vNw);
float3 vspaceRefl = mul((float3x3) g_mWorldToView, worldNormalRefl).xyz;
float percRoughness = SmoothnessToPerceptualRoughness(smoothness);
UnityLight light;
light.color = 0;
light.dir = 0;
float3 ints = 0;
uint l=0;
// we need this outer loop for when we cannot assume a wavefront is 64 wide
// since in this case we cannot assume the lights will remain sorted by type
// during processing in lightlist_cs.hlsl
#if !defined(XBONE) && !defined(PLAYSTATION4)
while(l<numReflProbes)
#endif
{
uint uIndex = l<numReflProbes ? FetchIndex(start, l) : 0;
uint uLgtType = l<numReflProbes ? g_vLightData[uIndex].uLightType : 0;
// specialized loop for sphere lights
while(l<numReflProbes && uLgtType==(uint) BOX_LIGHT)
{
SFiniteLightData lgtDat = g_vLightData[uIndex];
float3 vLp = lgtDat.vLpos.xyz;
float3 vecToSurfPos = vP - vLp; // vector from reflection volume to surface position in camera space
float3 posInReflVolumeSpace = float3( dot(vecToSurfPos, lgtDat.vLaxisX), dot(vecToSurfPos, lgtDat.vLaxisY), dot(vecToSurfPos, lgtDat.vLaxisZ) );
float blendDistance = lgtDat.fProbeBlendDistance;//unity_SpecCube1_ProbePosition.w; // will be set to blend distance for this probe
float3 sampleDir;
if((lgtDat.flags&IS_BOX_PROJECTED)!=0)
{
// For box projection, use expanded bounds as they are rendered; otherwise
// box projection artifacts when outside of the box.
//float4 boxMin = unity_SpecCube0_BoxMin - float4(blendDistance,blendDistance,blendDistance,0);
//float4 boxMax = unity_SpecCube0_BoxMax + float4(blendDistance,blendDistance,blendDistance,0);
//sampleDir = BoxProjectedCubemapDirection (worldNormalRefl, worldPos, unity_SpecCube0_ProbePosition, boxMin, boxMax);
float4 vBoxOuterDistance = float4( lgtDat.vBoxInnerDist + float3(blendDistance, blendDistance, blendDistance), 0.0 );
#if 0
// if rotation is NOT supported
sampleDir = BoxProjectedCubemapDirection(worldNormalRefl, posInReflVolumeSpace, float4(lgtDat.vLocalCubeCapturePoint, 1.0), -vBoxOuterDistance, vBoxOuterDistance);
#else
float3 volumeSpaceRefl = float3( dot(vspaceRefl, lgtDat.vLaxisX), dot(vspaceRefl, lgtDat.vLaxisY), dot(vspaceRefl, lgtDat.vLaxisZ) );
float3 vPR = BoxProjectedCubemapDirection(volumeSpaceRefl, posInReflVolumeSpace, float4(lgtDat.vLocalCubeCapturePoint, 1.0), -vBoxOuterDistance, vBoxOuterDistance); // Volume space corrected reflection vector
sampleDir = mul( (float3x3) g_mViewToWorld, vPR.x*lgtDat.vLaxisX + vPR.y*lgtDat.vLaxisY + vPR.z*lgtDat.vLaxisZ );
#endif
}
else
sampleDir = worldNormalRefl;
Unity_GlossyEnvironmentData g;
g.roughness = percRoughness;
g.reflUVW = sampleDir;
half3 env0 = Unity_GlossyEnvironment(UNITY_PASS_TEXCUBEARRAY(_reflCubeTextures), lgtDat.iSliceIndex, float4(lgtDat.fLightIntensity, lgtDat.fDecodeExp, 0.0, 0.0), g);
UnityIndirect ind;
ind.diffuse = 0;
ind.specular = env0;// * data.occlusion;
//half3 rgb = UNITY_BRDF_PBS(0, data.specularColor, oneMinusReflectivity, data.smoothness, data.normalWorld, vWSpaceVDir, light, ind).rgb;
half3 rgb = EvalIndirectSpecular(light, ind);
// Calculate falloff value, so reflections on the edges of the Volume would gradually blend to previous reflection.
// Also this ensures that pixels not located in the reflection Volume AABB won't
// accidentally pick up reflections from this Volume.
//half3 distance = distanceFromAABB(worldPos, unity_SpecCube0_BoxMin.xyz, unity_SpecCube0_BoxMax.xyz);
half3 distance = distanceFromAABB(posInReflVolumeSpace, -lgtDat.vBoxInnerDist, lgtDat.vBoxInnerDist);
half falloff = saturate(1.0 - length(distance)/blendDistance);
ints = lerp(ints, rgb, falloff);
// next probe
++l; uIndex = l<numReflProbes ? FetchIndex(start, l) : 0;
uLgtType = l<numReflProbes ? g_vLightData[uIndex].uLightType : 0;
}
#if !defined(XBONE) && !defined(PLAYSTATION4)
if(uLgtType!=BOX_LIGHT) ++l;
#endif
}
return ints;
}
half3 Unity_GlossyEnvironment (UNITY_ARGS_TEXCUBEARRAY(tex), int sliceIndex, half4 hdr, Unity_GlossyEnvironmentData glossIn)
{
#if UNITY_GLOSS_MATCHES_MARMOSET_TOOLBAG2 && (SHADER_TARGET >= 30)
// TODO: remove pow, store cubemap mips differently
half perceptualRoughness = pow(glossIn.roughness, 3.0/4.0);
#else
half perceptualRoughness = glossIn.roughness; // MM: switched to this
#endif
//perceptualRoughness = sqrt(sqrt(2/(64.0+2))); // spec power to the square root of real roughness
#if 0
float m = perceptualRoughness*perceptualRoughness; // m is the real roughness parameter
const float fEps = 1.192092896e-07F; // smallest such that 1.0+FLT_EPSILON != 1.0 (+1e-4h is NOT good here. is visibly very wrong)
float n = (2.0/max(fEps, m*m))-2.0; // remap to spec power. See eq. 21 in --> https://dl.dropboxusercontent.com/u/55891920/papers/mm_brdf.pdf
n /= 4; // remap from n_dot_h formulatino to n_dot_r. See section "Pre-convolved Cube Maps vs Path Tracers" --> https://s3.amazonaws.com/docs.knaldtech.com/knald/1.0.0/lys_power_drops.html
perceptualRoughness = pow( 2/(n+2), 0.25); // remap back to square root of real roughness
#else
// MM: came up with a surprisingly close approximation to what the #if 0'ed out code above does.
perceptualRoughness = perceptualRoughness*(1.7 - 0.7*perceptualRoughness);
#endif
half mip = perceptualRoughness * UNITY_SPECCUBE_LOD_STEPS;
half4 rgbm = UNITY_SAMPLE_TEXCUBEARRAY_LOD(tex, float4(glossIn.reflUVW.xyz, sliceIndex), mip);
//return rgbm.xyz;
return DecodeHDR_NoLinearSupportInSM2 (rgbm, hdr);
}
#endif

23
Assets/ScriptableRenderLoop/fptl/TiledReflectionTemplate.hlsl
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#ifndef __TILEDREFLECTIONTEMPLATE_H__
#define __TILEDREFLECTIONTEMPLATE_H__
#include "TiledLightingUtils.hlsl"
#include "ReflectionTemplate.hlsl"
float3 ExecuteReflectionListTiled(out uint numReflectionProbesProcessed, uint2 pixCoord, float3 vP, float3 vNw, float3 Vworld, float smoothness)
{
uint nrTilesX = (g_widthRT+15)/16; uint nrTilesY = (g_heightRT+15)/16;
uint2 tileIDX = pixCoord / 16;
uint start = 0, numReflectionProbes = 0;
GetCountAndStart(start, numReflectionProbes, tileIDX, nrTilesX, nrTilesY, vP.z, REFLECTION_LIGHT);
numReflectionProbesProcessed = numReflectionProbes; // mainly for debugging/heat maps
return ExecuteReflectionList(start, numReflectionProbes, vP, vNw, Vworld, smoothness);
}
#endif
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