void Update()
{
//_lightMap.filterMode = LightMapFilterMode;
ISM.filterMode = ShadowMapFilterMode;
//MousePick();
UpdateLightInfo();
Vector2 farPlane;
ShadowMapParams shadowMapFactor = new ShadowMapParams()
{
ShadowBias = SceneParamater.ShadowBias,
ShadowSlopeFactor = SceneParamater.ShadowSlopeFactor,
};
for (int i = 0; i < LightmapSettings.lightmaps.Length; ++i)
{
IsmUseCS(i, shadowMapFactor, out farPlane);
{
IrradianceUseComputeShader(IndirectLightPassCS, _gBuffer, ISM,
new PolygonLight()
{
Center = PolygonLightCenter,
PolygonHull = _polygonLight,
SumPower = PolygonLightPower,
Normal = PolygonLightNormal
}, _lightmaps[i], farPlane, i, shadowMapFactor);
}
}
SetLightMap();
}
void Update()
{
//MousePick();
UpdateLightInfo();
Vector2 farPlane;
ShadowMapParams shadowMapFactor = new ShadowMapParams()
{
ShadowBias = SceneParamater.ShadowBias,
ShadowSlopeFactor = SceneParamater.ShadowSlopeFactor,
};
for (int i = 0; i < LightmapSettings.lightmaps.Length; ++i)
{
{
ImprefectShadowMap.RenderISM(i, out farPlane, _polygonLightWithCenter,
new List <Vector3>(Enumerable.Repeat(PolygonLightNormal, _polygonLightWithCenter.Count)));
IrradianceUseComputeShader(IndirectLightPassCS, _gBuffer, ImprefectShadowMap.Ism,
new PolygonLight()
{
Center = PolygonLightCenter,
PolygonHull = _polygonLight,
SumPower = PolygonLightPower,
Normal = PolygonLightNormal
}, _lightmaps[i], farPlane, i, LightMapSize, ShadowMapSize, shadowMapFactor);
}
}
SetLightMap();
ISM = ImprefectShadowMap.Ism;
}
public void IsmUseCS(int lightmapIndex, ShadowMapParams shadowFactor, out Vector2 farPlane)
{
ISM.Clear(Color.black);
ZBuffer.Clear(new Color(10, 10, 10, 10));
int mainKernel = IsmCS.FindKernel("CSMain");
IsmCS.SetTexture(mainKernel, "_NormalTex", _gBuffer.NormalTex[lightmapIndex]);
IsmCS.SetTexture(mainKernel, "_PositionTex", _gBuffer.PositionTex[lightmapIndex]);
Matrix4x4 matrix = _gBuffer.RenderCameraVPInverse[lightmapIndex];
//转换成行优先？
float[] matrixFloats =
{
matrix[0, 0], matrix[1, 0], matrix[2, 0], matrix[3, 0],
matrix[0, 1], matrix[1, 1], matrix[2, 1], matrix[3, 1],
matrix[0, 2], matrix[1, 2], matrix[2, 2], matrix[3, 2],
matrix[0, 3], matrix[1, 3], matrix[2, 3], matrix[3, 3]
};
IsmCS.SetFloats("_GBufferCameraVPInverse", matrixFloats);
IsmCS.SetVector("_GBufferCameraPos", _gBuffer.RenderCameraPos[lightmapIndex]);
//塞入polygonlight 多边形的信息
// ComputeBuffer vplPositionBuffer = new ComputeBuffer(MaxVPLPerIsm, sizeof(float) * 3);
//vplPositionBuffer.SetData(Enumerable.Repeat(PolygonLightCenter, MaxVPLPerIsm).ToArray());
ComputeBuffer vplPositionBuffer = new ComputeBuffer(_polygonLightWithCenter.Count, sizeof(float) * 3);
vplPositionBuffer.SetData(_polygonLightWithCenter);
//ComputeBuffer vplNormalBuffer = new ComputeBuffer(MaxVPLPerIsm, sizeof(float) * 3);
//vplNormalBuffer.SetData(Enumerable.Repeat(PolygonLightNormal, MaxVPLPerIsm).ToArray());
ComputeBuffer vplNormalBuffer = new ComputeBuffer(_polygonLightWithCenter.Count, sizeof(float) * 3);
vplNormalBuffer.SetData(Enumerable.Repeat(PolygonLightNormal, _polygonLightWithCenter.Count).ToArray());
IsmCS.SetBuffer(mainKernel, "_VplPosition", vplPositionBuffer);
IsmCS.SetBuffer(mainKernel, "_VplNormal", vplNormalBuffer);
//IsmCS.SetInt("_IsmCount", MaxVPLPerIsm);
IsmCS.SetInt("_IsmCount", _polygonLightWithCenter.Count);
IsmCS.SetInt("_GBufferTexSize", LightMapSize);
IsmCS.SetInt("_ShadowMapSize", ShadowMapSize);
var farClipPlane = _gBuffer.SceneAABB.size.y * 3;
farPlane = new Vector2(farClipPlane, 1f / farClipPlane);
IsmCS.SetVector("_ZFar", farPlane);
IsmCS.SetTexture(mainKernel, "_Ism", ISM);
IsmCS.SetTexture(mainKernel, "_ZBuffer", ZBuffer);
IsmCS.Dispatch(mainKernel, LightMapSize / 32, LightMapSize / 32, 1);
//dispose
vplPositionBuffer.Dispose();
vplNormalBuffer.Dispose();
}
public void IrradianceUseComputeShader(ComputeShader indirectLightPassCS, UnityLmGBuffer gBuffer, RenderTexture shadowmap, PolygonLight polygonLight, RenderTexture rt,
Vector2 farPlane, int lightmapIndex, ShadowMapParams shadowFactor)
{
//rt.Clear();
int mainKernel = indirectLightPassCS.FindKernel("CSMain");
indirectLightPassCS.SetTexture(mainKernel, "_NormalTex", gBuffer.NormalTex[lightmapIndex]);
indirectLightPassCS.SetTexture(mainKernel, "_PositionTex", gBuffer.PositionTex[lightmapIndex]);
Matrix4x4 matrix = gBuffer.RenderCameraVPInverse[lightmapIndex];
//转换成行优先？
float[] matrixFloats =
{
matrix[0, 0], matrix[1, 0], matrix[2, 0], matrix[3, 0],
matrix[0, 1], matrix[1, 1], matrix[2, 1], matrix[3, 1],
matrix[0, 2], matrix[1, 2], matrix[2, 2], matrix[3, 2],
matrix[0, 3], matrix[1, 3], matrix[2, 3], matrix[3, 3]
};
float[] matrixFloats1 =
{
matrix[0, 0], matrix[0, 1], matrix[0, 2], matrix[0, 3],
matrix[1, 0], matrix[1, 1], matrix[1, 2], matrix[1, 3],
matrix[2, 0], matrix[2, 1], matrix[2, 2], matrix[2, 3],
matrix[3, 0], matrix[3, 1], matrix[3, 2], matrix[3, 3]
};
indirectLightPassCS.SetFloats("_GBufferCameraVPInverse", matrixFloats);
indirectLightPassCS.SetVector("_GBufferCameraPos", gBuffer.RenderCameraPos[lightmapIndex]);
//塞入polygonlight 多边形的信息
ComputeBuffer polygonLightBuffer = new ComputeBuffer(_polygonLight.Count, sizeof(float) * 3);
//polygonLightBuffer.SetData(polygonLight.PolygonHull.ToArray());
polygonLightBuffer.SetData(_polygonLight.ToArray());
indirectLightPassCS.SetBuffer(mainKernel, "_PolygonHull", polygonLightBuffer);
indirectLightPassCS.SetVector("_PolygonCenter", polygonLight.Center);
indirectLightPassCS.SetVector("_PolygonNormal", polygonLight.Normal);
indirectLightPassCS.SetVector("_PolygonTotalFlux", polygonLight.SumPower);
indirectLightPassCS.SetInt("_PolygonVertexCount", _polygonLight.Count);
indirectLightPassCS.SetFloat("_ShadowBias", shadowFactor.ShadowBias);
indirectLightPassCS.SetVector("_FarPlane", farPlane);
indirectLightPassCS.SetInt("_LightMapSize", LightMapSize);
indirectLightPassCS.SetInt("_ShadowMapSize", ShadowMapSize);
indirectLightPassCS.SetInt("_IsmCount", MaxVPLPerIsm);
indirectLightPassCS.SetInt("_IsmIndexOffset", 0);
indirectLightPassCS.SetFloat("_ShadowSoftness", shadowFactor.ShadowSoftness);
indirectLightPassCS.SetFloat("_BiasFade", shadowFactor.BiasFade);
//塞入最后返回的RenderTexture
indirectLightPassCS.SetTexture(mainKernel, "_LightMap", rt);
indirectLightPassCS.SetTexture(mainKernel, "_Ism", ISM);
// ComputeBuffer outputPosBuffer = new ComputeBuffer(100*1000, sizeof(float));
// IndirectLightPassCS.SetBuffer(mainKernel, "_OutputGBufferPos", outputPosBuffer);
indirectLightPassCS.Dispatch(mainKernel, LightMapSize / 32, LightMapSize / 32, 1);
//dispose
polygonLightBuffer.Dispose();
}
public void Init()
{
var unityAPIInit = UnityAPICaller.Instance;
_geometryBuffer?.Release();
_gi?.Release();
SceneParamater.InitLightmapSetting();
Debug.Log("GI Init Begin");
var meshRenderers = GameObject.FindObjectsOfType <MeshRenderer>();
//gen mesh collider
/*
* foreach (var go in meshRenderers)
* {
* if (go.GetComponent<MeshCollider>() == null)
* {
* go.gameObject.AddComponent<MeshCollider>();
* }
* }*/
Debug.LogWarning("Has Added MeshCollider");
var boxColliders = meshRenderers.Select(x => x.bounds).ToList();
var sceneAABB = boxColliders[0];
foreach (var obj in boxColliders)
{
sceneAABB.Encapsulate(obj);
}
_geometryBuffer = new UnityLmGBuffer(CollectGeomerty, LightMapSize);
_geometryBuffer.PrepareGeometry(SaveGBufferTexture);
ImprefectShadowMap ism;
switch (ISMType)
{
case ISMGenType.TS:
ism = new ISM_TS(ShadowMapSize, _geometryBuffer);
break;
case ISMGenType.CS:
ism = new ISM_CS(IsmPass, ShadowMapSize, _geometryBuffer);
break;
default:
throw new ArgumentOutOfRangeException();
}
_gi = new VplWithIsm(_geometryBuffer, ism, LightMapSize, TotalSampleCount, Bounce,
RenderTextureFormat.ARGBFloat,
DirectLightPass, IndirectLightPass, AccumlatePass, SpeID);
_gi.EncodeRgbmCS = EncodeRgbm;
_gi.DirectLightWeight = DirectWight;
_gi.IndirectLightWeight = IndirectWight;
_gi.BuildFinish = false;
_gi.Init();
List <GILightBase> lights = new List <GILightBase>();
lights.AddRange(FindObjectsOfType <GIPointLight>());
lights.AddRange(FindObjectsOfType <GIAreaLight>());
lights.AddRange(FindObjectsOfType <GIDirectionalLight>());
_gi.EmitVPL(lights);
//1.准备G-buffer
//3.聚类成polygonlight
_gi.Cluster2Polygon();
ShadowMapParams param = new ShadowMapParams();
param.ShadowSlopeFactor = SceneParamater.ShadowSlopeFactor;
param.ShadowBias = SceneParamater.ShadowBias;
_gi.ShadowMapParam = param;
_gi.BuildLightMap(BuildDirectLight, BuildIndirectLight);
Debug.Log("GI Finish");
}
public void IrradianceUseComputeShader(ComputeShader indirectLightPassCS, UnityLmGBuffer gBuffer, RenderTexture shadowmap, PolygonLight polygonLight, RenderTexture rt,
Vector2 farPlane, int lightmapIndex, int lightmapSize, int shadowmapSize, ShadowMapParams shadowFactor)
{
//rt.Clear();
int mainKernel = indirectLightPassCS.FindKernel("CSMain");
_gBuffer.SetComputeShaderData(indirectLightPassCS, mainKernel, lightmapIndex);
//塞入polygonlight 多边形的信息
ComputeBuffer polygonLightBuffer = new ComputeBuffer(_polygonLight.Count, sizeof(float) * 3);
//polygonLightBuffer.SetData(polygonLight.PolygonHull.ToArray());
polygonLightBuffer.SetData(_polygonLight.ToArray());
indirectLightPassCS.SetBuffer(mainKernel, "_PolygonHull", polygonLightBuffer);
indirectLightPassCS.SetVector("_PolygonCenter", polygonLight.Center);
indirectLightPassCS.SetVector("_PolygonNormal", polygonLight.Normal);
indirectLightPassCS.SetVector("_PolygonTotalFlux", polygonLight.SumPower);
indirectLightPassCS.SetInt("_PolygonVertexCount", _polygonLight.Count);
indirectLightPassCS.SetFloat("_ShadowBias", shadowFactor.ShadowBias);
indirectLightPassCS.SetVector("_FarPlane", farPlane);
indirectLightPassCS.SetInt("_LightMapSize", lightmapSize);
indirectLightPassCS.SetInt("_ShadowMapSize", shadowmapSize);
indirectLightPassCS.SetInt("_IsmIndexOffset", 0);
indirectLightPassCS.SetFloat("_ShadowSoftness", shadowFactor.ShadowSoftness);
indirectLightPassCS.SetFloat("_BiasFade", shadowFactor.BiasFade);
//塞入最后返回的RenderTexture
indirectLightPassCS.SetTexture(mainKernel, "_LightMap", rt);
indirectLightPassCS.SetTexture(mainKernel, "_Ism", shadowmap);
// ComputeBuffer outputPosBuffer = new ComputeBuffer(100*1000, sizeof(float));
// IndirectLightPassCS.SetBuffer(mainKernel, "_OutputGBufferPos", outputPosBuffer);
indirectLightPassCS.Dispatch(mainKernel, lightmapSize / 32, lightmapSize / 32, 1);
//dispose
polygonLightBuffer.Dispose();
}
