protected internal unsafe override void Execute(ParallelizationProvider pp)
{
// See if we need to resize the depth buffer
Vector2 viewportDimensions = output.SizePixels;
if (viewportDimensions.X < 1f || viewportDimensions.Y < 1f)
{
return;
}
uint viewportX = (uint)viewportDimensions.X;
uint viewportY = (uint)viewportDimensions.Y;
if (shadowBuffer == null || shadowBufferDSV == null || shadowBufferDSV.ResourceOrViewDisposed ||
shadowBufferSRV == null || shadowBufferSRV.ResourceOrViewDisposed ||
shadowBuffer.Width != viewportX || shadowBuffer.Height != viewportY)
{
if (shadowBufferDSV != null && !shadowBufferDSV.IsDisposed)
{
shadowBufferDSV.Dispose();
}
if (shadowBuffer != null && !shadowBuffer.IsDisposed)
{
shadowBuffer.Dispose();
}
shadowBuffer = shadowBufferBuilder.WithWidth(viewportX).WithHeight(viewportY);
shadowBufferDSV = shadowBuffer.CreateDepthStencilView <TexelFormat.DepthStencil>(0U);
shadowBufferSRV = shadowBuffer.CreateView <TexelFormat.R24UnormX8Typeless>(0U, 1U);
}
// Clear the depth buffer
QueueRenderCommand(RenderCommand.ClearDepthStencil(shadowBufferDSV));
List <GeometryCache> activeCaches = GeometryCache.ActiveCaches;
foreach (GeometryCache c in activeCaches)
{
// Set view/proj matrix
Matrix vpMat = (*((Matrix *)lightCam.GetRecalculatedViewMatrix()) * *((Matrix *)Output.GetRecalculatedProjectionMatrix(lightCam))).Transpose;
byte * vpMapPtr = (byte *)&vpMat;
shadowVS.ViewProjMatBinding.SetValue(vpMapPtr);
// Set state for current cache
cpuInstanceBufferCurIndex = 0;
List <SceneLayer> allEnabledLayers = Scene.EnabledLayers;
uint maxLayer = 0U;
for (int i = 0; i < allEnabledLayers.Count; ++i)
{
if (allEnabledLayers[i].Index > maxLayer)
{
maxLayer = allEnabledLayers[i].Index;
}
}
if (allEnabledLayers.Count > 0 && currentSceneLayers.Length <= maxLayer)
{
currentSceneLayers = new SceneLayer[maxLayer + 1U];
}
Array.Clear(currentSceneLayers, 0, currentSceneLayers.Length);
foreach (SceneLayer layer in allEnabledLayers)
{
currentSceneLayers[layer.Index] = layer;
}
currentCache = c;
++frameNum;
Thread.MemoryBarrier();
currentInstanceData = currentCache.GetModelInstanceData();
// Set up each thread
pp.InvokeOnAll(setUpCacheForLocalThreadAct, true); // membar here
// Iterate all model instances (ordered by material)
pp.Execute((int)currentInstanceData.Length, (int)(currentInstanceData.Length / (pp.NumThreads << 3)) + 1, renderCacheIterateMatAct);
// Set instance buffer and write to it
if (gpuInstanceBuffer == null || gpuInstanceBuffer.Length < cpuInstanceBuffer.Length)
{
if (gpuInstanceBuffer != null)
{
gpuInstanceBuffer.Dispose();
}
gpuInstanceBuffer = gpuInstanceBufferBuilder.WithLength((uint)cpuInstanceBuffer.Length).Create();
}
gpuInstanceBuffer.DiscardWrite(cpuInstanceBuffer); // Happens immediately (required)
// Set instance buffer and flush all commands, first on immediate context, then on each deferred
SetInstanceBufferAndFlushCommands();
pp.InvokeOnAll(setInstanceBufferAndFlushCommandsAct, false);
}
}
