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spot is Z aligned in unity 

spot is Z aligned in unity
/main
mmikk 8 年前
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b35ab050
共有 3 个文件被更改，包括 68 次插入 和 55 次删除
  1. 78
      Assets/ScriptableRenderLoop/fptl/lightlistbuild-clustered.compute
  2. 2
      Assets/ScriptableRenderLoop/fptl/lightlistbuild.compute
  3. 43
      Assets/ScriptableRenderLoop/fptl/ClusteredUtils.h

78
Assets/ScriptableRenderLoop/fptl/lightlistbuild-clustered.compute
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#include "..\common\ShaderBase.h"
#include "LightDefinitions.cs.hlsl"
#include "ClusteredUtils.h"
//#define EXACT_EDGE_TESTS
#define PERFORM_SPHERICAL_INTERSECTION_TESTS

#ifdef MSAA_ENABLED
Texture2DMS<float4> g_depth_tex : register( t0 );
Texture2DMS<float> g_depth_tex : register( t0 );
#else
Texture2D g_depth_tex : register( t0 );
#endif

#endif
int SnapToClusterIdx(float z_in, float fModulUserScale)
{
#ifndef LEFT_HAND_COORDINATES
float z = -z_in;
#else
float z = z_in;
#endif
float userscale = g_fClustScale;
#ifdef ENABLE_DEPTH_TEXTURE_BACKPLANE
userscale *= fModulUserScale;
#endif
// using the inverse of the geometric series
const float dist = max(0, z-g_fNearPlane);
return (int) clamp( log2(dist*userscale*(g_fClustBase-1.0f) + 1) / log2(g_fClustBase), 0.0, (float) ((1<<g_iLog2NumClusters)-1) );
}
float ClusterIdxToZ(int k, float fModulUserScale)
{
float res;
float userscale = g_fClustScale;
#ifdef ENABLE_DEPTH_TEXTURE_BACKPLANE
userscale *= fModulUserScale;
#endif
float dist = (pow(g_fClustBase,(float) k)-1.0)/(userscale*(g_fClustBase-1.0f));
res = dist+g_fNearPlane;
#ifdef LEFT_HAND_COORDINATES
return res;
#else
return -res;
#endif
}
float GetLinearDepth(float zDptBufSpace) // 0 is near 1 is far
{
float3 vP = float3(0.0f,0.0f,zDptBufSpace);

uint iWidth;
uint iHeight;
#ifdef MSAA_ENABLED
uint iNumSamplesMSAA;
g_depth_tex.GetDimensions(iWidth, iHeight, iNumSamplesMSAA);
#else
#endif
uint nrTilesX = (iWidth+15)/16;
uint nrTilesY = (iHeight+15)/16;

{
uint2 uPixCrd = min( uint2(viTilLL.x+(idx&0xf), viTilLL.y+(idx>>4)), uint2(iWidth-1, iHeight-1) );
#ifdef MSAA_ENABLED
for(int i=0; i<g_iNumSamplesMSAA; i++)
for(int i=0; i<iNumSamplesMSAA; i++)
{
const float fDpth = FetchDepthMSAA(g_depth_tex, uPixCrd, i);
#else

InterlockedAdd(g_LayeredSingleIdxBuffer[0], iSpaceAvail, start); // alloc list memory
}
int modelListCount[2]={0,0}; // direct light count and reflection lights
int modelListCount[NR_LIGHT_MODELS]={0,0}; // direct light count and reflection lights
uint offs = start;
for(int ll=0; ll<iNrCoarseLights; ll+=4)
{

const float3 vBoxX = lgtDat.vBoxAxisX.xyz;
const float3 vBoxY = lgtDat.vBoxAxisY.xyz;
const float3 vBoxZ = lgtDat.vBoxAxisZ.xyz;
const float3 vBoxZ = -lgtDat.vBoxAxisZ.xyz; // flip an axis to make it right handed since Determinant(worldToView)<0
const float3 vCen = lgtDat.vCen.xyz;
const float fRadius = lgtDat.fRadius;
const float2 vScaleXY = lgtDat.vScaleXY;

#ifdef EXACT_EDGE_TESTS
float3 GetHullVertex(const float3 vBoxX, const float3 vBoxY, const float3 vBoxZ, const float3 vCen, const float2 vScaleXZ, const int p)
float3 GetHullVertex(const float3 vBoxX, const float3 vBoxY, const float3 vBoxZ, const float3 vCen, const float2 vScaleXY, const int p)
const bool bIsTopVertex = (p&2)!=0;
float3 vScales = float3( ((p&1)!=0 ? 1.0f : (-1.0f))*(bIsTopVertex ? vScaleXZ.x : 1.0), (p&2)!=0 ? 1.0f : (-1.0f), ((p&4)!=0 ? 1.0f : (-1.0f))*(bIsTopVertex ? vScaleXZ.y : 1.0) );
const bool bIsTopVertex = (p&4)!=0;
float3 vScales = float3( ((p&1)!=0 ? 1.0f : (-1.0f))*(bIsTopVertex ? vScaleXY.x : 1.0), ((p&2)!=0 ? 1.0f : (-1.0f))*(bIsTopVertex ? vScaleXY.y : 1.0), (p&4)!=0 ? 1.0f : (-1.0f) );
void GetHullEdge(out int idx_twin, out float3 vP0, out float3 vE0, const int e0, const float3 vBoxX, const float3 vBoxY, const float3 vBoxZ, const float3 vCen, const float2 vScaleXZ)
void GetHullEdge(out int idx0, out int idx_twin, out float3 vP0, out float3 vE0, const int e0, const float3 vBoxX, const float3 vBoxY, const float3 vBoxZ, const float3 vCen, const float2 vScaleXY)
{
int iAxis = e0>>2;
int iSwizzle = e0&0x3;

const int i1 = i0 + (1<<iAxis);
const bool bSwap = iAxis==0 ? (!bIsSwizzleOneOrTwo) : (iAxis==1 ? false : bIsSwizzleOneOrTwo);
idx0 = bSwap ? i1 : i0;
float3 p0 = GetHullVertex(vBoxX, vBoxY, vBoxZ, vCen, vScaleXZ, bSwap ? i1 : i0);
float3 p1 = GetHullVertex(vBoxX, vBoxY, vBoxZ, vCen, vScaleXZ, idx_twin);
float3 p0 = GetHullVertex(vBoxX, vBoxY, vBoxZ, vCen, vScaleXY, idx0);
float3 p1 = GetHullVertex(vBoxX, vBoxY, vBoxZ, vCen, vScaleXY, idx_twin);
vP0 = p0;
vE0 = p1-p0;

const float3 vBoxX = lgtDat.vBoxAxisX.xyz;
const float3 vBoxY = lgtDat.vBoxAxisY.xyz;
const float3 vBoxZ = lgtDat.vBoxAxisZ.xyz;
const float3 vBoxZ = -lgtDat.vBoxAxisZ.xyz; // flip an axis to make it right handed since Determinant(worldToView)<0
const float2 vScaleXZ = lgtDat.vScaleXZ;
const float2 vScaleXY = lgtDat.vScaleXY;
for(int i=threadID; i<totNrEdgePairs; i+=NR_THREADS)
{

int idx_twin=0;
int idx_cur=0, idx_twin=0;
GetHullEdge(idx_twin, vP0, vE0, e0, vBoxX, vBoxY, vBoxZ, vCen, vScaleXZ);
GetHullEdge(idx_cur, idx_twin, vP0, vE0, e0, vBoxX, vBoxY, vBoxZ, vCen, vScaleXY);
float3 vP1, vE1;

float3 vN = cross(vE0, vE1);
int positive=0, negative=0;
for(int j=0; j<8; j++)
for(int k=1; k<8; k++) // only need to test 7 verts (technically just 6).
float3 vPh = GetHullVertex(vBoxX, vBoxY, vBoxZ, vCen, vScaleXZ, j);
int j = (idx_cur+k)&0x7;
float3 vPh = GetHullVertex(vBoxX, vBoxY, vBoxZ, vCen, vScaleXY, j);
float fSignDist = idx_twin==j ? 0.0 : dot(vN, vPh-vP0);
if(fSignDist>0) ++positive; else if(fSignDist<0) ++negative;
}

2
Assets/ScriptableRenderLoop/fptl/lightlistbuild.compute
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#endif
groupshared int ldsNrLightsFinal;
groupshared int ldsModelListCount[2]; // since NR_LIGHT_MODELS is 2
groupshared int ldsModelListCount[NR_LIGHT_MODELS]; // since NR_LIGHT_MODELS is 2
//float GetLinearDepth(float3 vP)

43
Assets/ScriptableRenderLoop/fptl/ClusteredUtils.h
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#ifndef __CLUSTEREDUTILS_H__
#define __CLUSTEREDUTILS_H__
int SnapToClusterIdx(float z_in, float fModulUserScale)
{
#ifndef LEFT_HAND_COORDINATES
float z = -z_in;
#else
float z = z_in;
#endif
float userscale = g_fClustScale;
#ifdef ENABLE_DEPTH_TEXTURE_BACKPLANE
userscale *= fModulUserScale;
#endif
// using the inverse of the geometric series
const float dist = max(0, z-g_fNearPlane);
return (int) clamp( log2(dist*userscale*(g_fClustBase-1.0f) + 1) / log2(g_fClustBase), 0.0, (float) ((1<<g_iLog2NumClusters)-1) );
}
float ClusterIdxToZ(int k, float fModulUserScale)
{
float res;
float userscale = g_fClustScale;
#ifdef ENABLE_DEPTH_TEXTURE_BACKPLANE
userscale *= fModulUserScale;
#endif
float dist = (pow(g_fClustBase,(float) k)-1.0)/(userscale*(g_fClustBase-1.0f));
res = dist+g_fNearPlane;
#ifdef LEFT_HAND_COORDINATES
return res;
#else
return -res;
#endif
}
#endif
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