void LightList::QueueClusteredLightCulling(Renderer& rRenderer, const Camera& rCamera)
{
RdrResourceCommandList* pResCommandList = rRenderer.GetActionCommandList();
Vec2 viewportSize = rRenderer.GetViewportSize();
// Determine the cluster tile size given two rules:
// 1) The larger viewport dimension will have 16 tiles.
// 2) Tile size must be a multiple of 8.
const uint kMaxTilesPerDimension = 16;
float maxDim = max(viewportSize.x, viewportSize.y);
m_clusteredLightData.clusterTileSize = ((uint)ceil(maxDim / kMaxTilesPerDimension) + 7) & ~7;
int clusterCountX = (int)ceil(viewportSize.x / m_clusteredLightData.clusterTileSize);
int clusterCountY = (int)ceil(viewportSize.y / m_clusteredLightData.clusterTileSize);
if (m_clusteredLightData.clusterCountX < clusterCountX || m_clusteredLightData.clusterCountY < clusterCountY)
{
// Resize buffers
m_clusteredLightData.clusterCountX = max(16, clusterCountX);
m_clusteredLightData.clusterCountY = max(16, clusterCountY);
if (m_clusteredLightData.hLightIndices)
pResCommandList->ReleaseResource(m_clusteredLightData.hLightIndices);
m_clusteredLightData.hLightIndices = pResCommandList->CreateDataBuffer(nullptr, m_clusteredLightData.clusterCountX * m_clusteredLightData.clusterCountY * CLUSTEREDLIGHTING_DEPTH_SLICES * CLUSTEREDLIGHTING_BLOCK_SIZE, RdrResourceFormat::R16_UINT, RdrResourceUsage::Default);
}
RdrComputeOp* pCullOp = RdrFrameMem::AllocComputeOp();
pCullOp->shader = RdrComputeShader::ClusteredLightCull;
pCullOp->threads[0] = clusterCountX;
pCullOp->threads[1] = clusterCountY;
pCullOp->threads[2] = CLUSTEREDLIGHTING_DEPTH_SLICES;
pCullOp->ahWritableResources.assign(0, m_clusteredLightData.hLightIndices);
pCullOp->ahResources.assign(0, m_hSpotLightListRes);
pCullOp->ahResources.assign(1, m_hPointLightListRes);
uint constantsSize = sizeof(ClusteredLightCullingParams);
ClusteredLightCullingParams* pParams = (ClusteredLightCullingParams*)RdrFrameMem::AllocAligned(constantsSize, 16);
Matrix44 mtxProj;
rCamera.GetMatrices(pParams->mtxView, mtxProj);
pParams->mtxView = Matrix44Transpose(pParams->mtxView);
pParams->proj_11 = mtxProj._11;
pParams->proj_22 = mtxProj._22;
pParams->screenSize = viewportSize;
pParams->fovY = rCamera.GetFieldOfViewY();
pParams->aspectRatio = rCamera.GetAspectRatio();
pParams->clusterCountX = clusterCountX;
pParams->clusterCountY = clusterCountY;
pParams->clusterCountZ = CLUSTEREDLIGHTING_DEPTH_SLICES;
pParams->clusterTileSize = m_clusteredLightData.clusterTileSize;
pParams->spotLightCount = m_spotLights.size();
pParams->pointLightCount = m_pointLights.size();
m_clusteredLightData.hCullConstants = pResCommandList->CreateUpdateConstantBuffer(m_clusteredLightData.hCullConstants,
pParams, constantsSize, RdrCpuAccessFlags::Write, RdrResourceUsage::Dynamic);
pCullOp->ahConstantBuffers.assign(0, m_clusteredLightData.hCullConstants);
rRenderer.AddComputeOpToPass(pCullOp, RdrPass::LightCulling);
}
static void updateJointMatricesNoJob( tAnimHierarchy* pAnimHierarchy,
tMatrix44* aAnimMatrices )
{
// update joint matrices in hierarchy
// use worker threads
int iJoint = 0;
int iLevel = 0;
for( ;; )
{
if( iJoint >= pAnimHierarchy->miNumJoints )
{
break;
}
tJoint* pJoint = &pAnimHierarchy->maJoints[iJoint];
if( pJoint->miLevel > iLevel )
{
// update next level
++iLevel;
}
int iJointIndex = 0;
int iNumHierarchyJoints = pAnimHierarchy->miNumJoints;
for( iJointIndex = 0; iJointIndex < iNumHierarchyJoints; iJointIndex++ )
{
if( !strcmp( pAnimHierarchy->maJoints[iJointIndex].mszName, pJoint->mszName ) )
{
break;
}
}
WTFASSERT2( iJointIndex < iNumHierarchyJoints, "can't find joint in hierarchy" );
// transform
tMatrix44 const* pParentMatrix = &gIdentityMat;
if( pJoint->mpParent )
{
pParentMatrix = pJoint->mpParent->mpTotalMatrix;
}
// M(total) = M(parent) * M(local) * M(anim)
tMatrix44 parentLocalMatrix;
tMatrix44* pTotalMatrix = pJoint->mpTotalMatrix;
tMatrix44* pSkinMatrix = pJoint->mpSkinMatrix;
Matrix44Multiply( &parentLocalMatrix, pParentMatrix, pJoint->mpLocalMatrix );
//Matrix44Multiply( pTotalMatrix, &parentLocalMatrix, pJoint->mpAnimMatrix );
Matrix44Multiply( pTotalMatrix, &parentLocalMatrix, &aAnimMatrices[iJointIndex]);
// M(skin) = M(total) * M(invPose)
Matrix44Multiply( pJoint->mpSkinMatrix, pTotalMatrix, pJoint->mpInvPoseMatrix );
// M(invTransposeSkin)
tMatrix44 invSkinMatrix;
Matrix44Inverse( &invSkinMatrix, pSkinMatrix );
Matrix44Transpose( pJoint->mpInvTransSkinningMatrix, &invSkinMatrix );
++iJoint;
}
}
void LightList::QueueTiledLightCulling(Renderer& rRenderer, const Camera& rCamera)
{
RdrResourceCommandList* pResCommandList = rRenderer.GetActionCommandList();
Vec2 viewportSize = rRenderer.GetViewportSize();
uint tileCountX = RdrComputeOp::getThreadGroupCount((uint)viewportSize.x, TILEDLIGHTING_TILE_SIZE);
uint tileCountY = RdrComputeOp::getThreadGroupCount((uint)viewportSize.y, TILEDLIGHTING_TILE_SIZE);
bool tileCountChanged = false;
if (m_tiledLightData.tileCountX != tileCountX || m_tiledLightData.tileCountY != tileCountY)
{
m_tiledLightData.tileCountX = tileCountX;
m_tiledLightData.tileCountY = tileCountY;
tileCountChanged = true;
}
//////////////////////////////////////
// Depth min max
if (tileCountChanged)
{
if (m_tiledLightData.hDepthMinMaxTex)
pResCommandList->ReleaseResource(m_tiledLightData.hDepthMinMaxTex);
m_tiledLightData.hDepthMinMaxTex = pResCommandList->CreateTexture2D(tileCountX, tileCountY, RdrResourceFormat::R16G16_FLOAT, RdrResourceUsage::Default, nullptr);
}
// Update constants
Matrix44 viewMtx;
Matrix44 invProjMtx;
rCamera.GetMatrices(viewMtx, invProjMtx);
invProjMtx = Matrix44Inverse(invProjMtx);
invProjMtx = Matrix44Transpose(invProjMtx);
uint constantsSize = sizeof(Vec4) * 4;
Vec4* pConstants = (Vec4*)RdrFrameMem::AllocAligned(constantsSize, 16);
for (int i = 0; i < 4; ++i)
{
pConstants[i].x = invProjMtx.m[i][0];
pConstants[i].y = invProjMtx.m[i][1];
pConstants[i].z = invProjMtx.m[i][2];
pConstants[i].w = invProjMtx.m[i][3];
}
m_tiledLightData.hDepthMinMaxConstants = pResCommandList->CreateUpdateConstantBuffer(m_tiledLightData.hDepthMinMaxConstants,
pConstants, constantsSize, RdrCpuAccessFlags::Write, RdrResourceUsage::Dynamic);
// Fill draw op
RdrComputeOp* pDepthOp = RdrFrameMem::AllocComputeOp();
pDepthOp->shader = RdrComputeShader::TiledDepthMinMax;
pDepthOp->threads[0] = tileCountX;
pDepthOp->threads[1] = tileCountY;
pDepthOp->threads[2] = 1;
pDepthOp->ahWritableResources.assign(0, m_tiledLightData.hDepthMinMaxTex);
pDepthOp->ahResources.assign(0, rRenderer.GetPrimaryDepthBuffer());
pDepthOp->ahConstantBuffers.assign(0, m_tiledLightData.hDepthMinMaxConstants);
rRenderer.AddComputeOpToPass(pDepthOp, RdrPass::LightCulling);
//////////////////////////////////////
// Light culling
if (tileCountChanged)
{
if (m_tiledLightData.hLightIndices)
pResCommandList->ReleaseResource(m_tiledLightData.hLightIndices);
m_tiledLightData.hLightIndices = pResCommandList->CreateDataBuffer(nullptr, tileCountX * tileCountY * TILEDLIGHTING_BLOCK_SIZE, RdrResourceFormat::R16_UINT, RdrResourceUsage::Default);
}
// Update constants
constantsSize = sizeof(TiledLightCullingParams);
TiledLightCullingParams* pParams = (TiledLightCullingParams*)RdrFrameMem::AllocAligned(constantsSize, 16);
Matrix44 mtxProj;
rCamera.GetMatrices(pParams->mtxView, mtxProj);
pParams->mtxView = Matrix44Transpose(pParams->mtxView);
pParams->proj_11 = mtxProj._11;
pParams->proj_22 = mtxProj._22;
pParams->cameraNearDist = rCamera.GetNearDist();
pParams->cameraFarDist = rCamera.GetFarDist();
pParams->screenSize = viewportSize;
pParams->fovY = rCamera.GetFieldOfViewY();
pParams->aspectRatio = rCamera.GetAspectRatio();
pParams->spotLightCount = m_spotLights.size();
pParams->pointLightCount = m_pointLights.size();
pParams->tileCountX = tileCountX;
pParams->tileCountY = tileCountY;
m_tiledLightData.hCullConstants = pResCommandList->CreateUpdateConstantBuffer(m_tiledLightData.hCullConstants,
pParams, constantsSize, RdrCpuAccessFlags::Write, RdrResourceUsage::Dynamic);
// Fill draw op
RdrComputeOp* pCullOp = RdrFrameMem::AllocComputeOp();
pCullOp->threads[0] = tileCountX;
pCullOp->threads[1] = tileCountY;
pCullOp->threads[2] = 1;
pCullOp->ahWritableResources.assign(0, m_tiledLightData.hLightIndices);
pCullOp->ahResources.assign(0, m_hSpotLightListRes);
pCullOp->ahResources.assign(1, m_hPointLightListRes);
pCullOp->ahResources.assign(2, m_tiledLightData.hDepthMinMaxTex);
pCullOp->ahConstantBuffers.assign(0, m_tiledLightData.hCullConstants);
rRenderer.AddComputeOpToPass(pCullOp, RdrPass::LightCulling);
}
void LightList::QueueDraw(Renderer& rRenderer, const Sky& rSky, const Camera& rCamera, const float sceneDepthMin, const float sceneDepthMax,
RdrLightingMethod lightingMethod, RdrLightResources* pOutResources)
{
Camera lightCamera;
int curShadowMapIndex = 0;
int curShadowCubeMapIndex = 0;
int shadowMapsThisFrame = 0;
// Update shadow casting lights and the global light constants
// todo: Choose shadow lights based on location and dynamic object movement
GlobalLightData* pGlobalLights = (GlobalLightData*)RdrFrameMem::AllocAligned(sizeof(GlobalLightData), 16);
// Temporarily add sky light to the light list.
m_directionalLights.push(rSky.GetSunLight());
for (uint i = 0, count = m_directionalLights.size(); i < count; ++i)
{
DirectionalLight& rDirLight = m_directionalLights[i];
int remainingShadowMaps = MAX_SHADOW_MAPS - curShadowMapIndex - 1;
const int kNumCascades = 4;
if (remainingShadowMaps >= kNumCascades)
{
// Directional lights always change because they're based on camera position/rotation
rDirLight.shadowMapIndex = curShadowMapIndex;
Rect viewport(0.f, 0.f, (float)s_shadowMapSize, (float)s_shadowMapSize);
float zMin = sceneDepthMin;
float zMax = sceneDepthMax;
float zDiff = (zMax - zMin);
float nearDepth = zMin;
float lamda = rSky.GetPssmLambda();
for (int iPartition = 0; iPartition < kNumCascades; ++iPartition)
{
float zUni = zMin + (zDiff / kNumCascades) * (iPartition + 1);
float zLog = zMin * powf(zMax / zMin, (iPartition + 1) / (float)kNumCascades);
float farDepth = lamda * zLog + (1.f - lamda) * zUni;
Vec3 center = rCamera.GetPosition() + rCamera.GetDirection() * ((farDepth + nearDepth) * 0.5f);
Matrix44 lightViewMtx = getLightViewMatrix(center, rDirLight.direction);
Quad nearQuad = rCamera.GetFrustumQuad(nearDepth);
QuadTransform(nearQuad, lightViewMtx);
Quad farQuad = rCamera.GetFrustumQuad(farDepth);
QuadTransform(farQuad, lightViewMtx);
Vec3 boundsMin(FLT_MAX, FLT_MAX, FLT_MAX);
Vec3 boundsMax(-FLT_MAX, -FLT_MAX, -FLT_MAX);
accumQuadMinMax(nearQuad, boundsMin, boundsMax);
accumQuadMinMax(farQuad, boundsMin, boundsMax);
float height = (boundsMax.y - boundsMin.y);
float width = (boundsMax.x - boundsMin.x);
lightCamera.SetAsOrtho(center, rDirLight.direction, std::max(width, height), -500.f, 500.f);
rRenderer.QueueShadowMapPass(lightCamera, m_shadowMapDepthViews[curShadowMapIndex], viewport);
Matrix44 mtxView;
Matrix44 mtxProj;
lightCamera.GetMatrices(mtxView, mtxProj);
pGlobalLights->shadowData[curShadowMapIndex].mtxViewProj = Matrix44Multiply(mtxView, mtxProj);
pGlobalLights->shadowData[curShadowMapIndex].mtxViewProj = Matrix44Transpose(pGlobalLights->shadowData[curShadowMapIndex].mtxViewProj);
pGlobalLights->shadowData[curShadowMapIndex].partitionEndZ = (iPartition == kNumCascades - 1) ? FLT_MAX : farDepth;
++shadowMapsThisFrame;
++curShadowMapIndex;
nearDepth = farDepth;
}
}
else
{
rDirLight.shadowMapIndex = -1;
}
}
for (uint i = 0, count = m_spotLights.size(); i < count; ++i)
{
SpotLight& rSpotLight = m_spotLights[i];
int remainingShadowMaps = MAX_SHADOW_MAPS - curShadowMapIndex - 1;
if (remainingShadowMaps)
{
Matrix44 mtxView;
Matrix44 mtxProj;
float angle = rSpotLight.outerConeAngle + Maths::DegToRad(5.f);
lightCamera.SetAsPerspective(rSpotLight.position, rSpotLight.direction, angle * 2.f, 1.f, 0.1f, 1000.f);
lightCamera.GetMatrices(mtxView, mtxProj);
pGlobalLights->shadowData[curShadowMapIndex].mtxViewProj = Matrix44Multiply(mtxView, mtxProj);
pGlobalLights->shadowData[curShadowMapIndex].mtxViewProj = Matrix44Transpose(pGlobalLights->shadowData[curShadowMapIndex].mtxViewProj);
Rect viewport(0.f, 0.f, (float)s_shadowMapSize, (float)s_shadowMapSize);
rRenderer.QueueShadowMapPass(lightCamera, m_shadowMapDepthViews[curShadowMapIndex], viewport);
rSpotLight.shadowMapIndex = curShadowMapIndex;
++shadowMapsThisFrame;
++curShadowMapIndex;
}
else
{
rSpotLight.shadowMapIndex = -1;
}
}
for (uint i = 0, count = m_pointLights.size(); i < count; ++i)
{
PointLight& rPointLight = m_pointLights[i];
int remainingShadowCubeMaps = MAX_SHADOW_CUBEMAPS - curShadowCubeMapIndex - 1;
if (remainingShadowCubeMaps)
{
rPointLight.shadowMapIndex = curShadowCubeMapIndex + MAX_SHADOW_MAPS;
Rect viewport(0.f, 0.f, (float)s_shadowCubeMapSize, (float)s_shadowCubeMapSize);
#if USE_SINGLEPASS_SHADOW_CUBEMAP
rRenderer.QueueShadowCubeMapPass(rPointLight, m_shadowCubeMapDepthViews[curShadowCubeMapIndex], viewport);
#else
for (uint face = 0; face < 6; ++face)
{
lightCamera.SetAsCubemapFace(light.position, (CubemapFace)face, 0.1f, light.radius * 2.f);
rRenderer.QueueShadowMapPass(lightCamera, m_shadowCubeMapDepthViews[curShadowCubeMapIndex * 6 + face], viewport);
}
#endif
++shadowMapsThisFrame;
++curShadowCubeMapIndex;
}
else
{
rPointLight.shadowMapIndex = -1;
}
}
//////////////////////////////////////////////////////////////////////////
// Apply resource updates
RdrResourceCommandList* pResCommandList = rRenderer.GetActionCommandList();
// Update spot lights
SpotLight* pSpotLights = (SpotLight*)RdrFrameMem::Alloc(sizeof(SpotLight) * m_spotLights.size());
memcpy(pSpotLights, m_spotLights.getData(), sizeof(SpotLight) * m_spotLights.size());
if (!m_hSpotLightListRes)
m_hSpotLightListRes = pResCommandList->CreateStructuredBuffer(pSpotLights, m_spotLights.capacity(), sizeof(SpotLight), RdrResourceUsage::Dynamic);
else
pResCommandList->UpdateBuffer(m_hSpotLightListRes, pSpotLights, sizeof(SpotLight) * m_spotLights.size());
// Update point lights
PointLight* pPointLights = (PointLight*)RdrFrameMem::Alloc(sizeof(PointLight) * m_pointLights.size());
memcpy(pPointLights, m_pointLights.getData(), sizeof(PointLight) * m_pointLights.size());
if (!m_hPointLightListRes)
m_hPointLightListRes = pResCommandList->CreateStructuredBuffer(pPointLights, m_pointLights.capacity(), sizeof(PointLight), RdrResourceUsage::Dynamic);
else
pResCommandList->UpdateBuffer(m_hPointLightListRes, pPointLights, sizeof(PointLight) * m_pointLights.size());
// Update environment lights
EnvironmentLight* pEnvironmentLights = (EnvironmentLight*)RdrFrameMem::Alloc(sizeof(EnvironmentLight) * m_environmentLights.size());
memcpy(pEnvironmentLights, m_environmentLights.getData(), sizeof(EnvironmentLight) * m_environmentLights.size());
if (!m_hEnvironmentLightListRes)
m_hEnvironmentLightListRes = pResCommandList->CreateStructuredBuffer(pEnvironmentLights, m_environmentLights.capacity(), sizeof(EnvironmentLight), RdrResourceUsage::Dynamic);
else
pResCommandList->UpdateBuffer(m_hEnvironmentLightListRes, pEnvironmentLights, sizeof(EnvironmentLight) * m_environmentLights.size());
// Light culling
if (lightingMethod == RdrLightingMethod::Clustered)
{
QueueClusteredLightCulling(rRenderer, rCamera);
}
else
{
QueueTiledLightCulling(rRenderer, rCamera);
}
// Update global lights constant buffer last so the light culling data is up to date.
pGlobalLights->numDirectionalLights = m_directionalLights.size();
pGlobalLights->globalEnvironmentLight = m_globalEnvironmentLight;
pGlobalLights->clusterTileSize = m_clusteredLightData.clusterTileSize;
memcpy(pGlobalLights->directionalLights, m_directionalLights.getData(), sizeof(DirectionalLight) * pGlobalLights->numDirectionalLights);
m_hGlobalLightsCb = pResCommandList->CreateUpdateConstantBuffer(m_hGlobalLightsCb,
pGlobalLights, sizeof(GlobalLightData), RdrCpuAccessFlags::Write, RdrResourceUsage::Dynamic);
// Remove sky light.
m_directionalLights.pop();
// Fill out resource params
pOutResources->hGlobalLightsCb = m_hGlobalLightsCb;
pOutResources->hSpotLightListRes = m_hSpotLightListRes;
pOutResources->hPointLightListRes = m_hPointLightListRes;
pOutResources->hEnvironmentLightListRes = m_hEnvironmentLightListRes;
pOutResources->hShadowCubeMapTexArray = m_hShadowCubeMapTexArray;
pOutResources->hShadowMapTexArray = m_hShadowMapTexArray;
pOutResources->hEnvironmentMapTexArray = m_hEnvironmentMapTexArray;
pOutResources->hLightIndicesRes = (lightingMethod == RdrLightingMethod::Clustered) ?
m_clusteredLightData.hLightIndices : m_tiledLightData.hLightIndices;
}
