public void AddAttributes(ShaderSourceCollection modifiers)
{
if (!Enabled)
{
return;
}
modifiers.Add(source);
}
public void PostProcess(VoxelStorageContext storageContext, RenderDrawContext drawContext, ProcessedVoxelVolume data)
{
if (Math.Max(Math.Max(ClipMapResolution.X, ClipMapResolution.Y), ClipMapResolution.Z) < 32)
{
return;
}
if (FragmentsBuffer == null)
{
return;
}
var context = drawContext.RenderContext;
if (ClearBuffer == null)
{
ClearBuffer = new Xenko.Rendering.ComputeEffect.ComputeEffectShader(context)
{
ShaderSourceName = "ClearBuffer"
};
BufferToTexture = new Xenko.Rendering.ComputeEffect.ComputeEffectShader(context)
{
ShaderSourceName = "BufferToTextureEffect"
};
BufferToTextureColumns = new Xenko.Rendering.ComputeEffect.ComputeEffectShader(context)
{
ShaderSourceName = "BufferToTextureColumnsEffect"
};
}
bool VoxelsAreIndependent = true;
List <VoxelAttribute> IndirectVoxels = new List <VoxelAttribute>();
List <VoxelAttribute> TempVoxels = new List <VoxelAttribute>();
ShaderSourceCollection Indirect = new ShaderSourceCollection();
ShaderSourceCollection Temp = new ShaderSourceCollection();
//Assign sample indices and check whether voxels can be calculated independently
int sampleIndex = 0;
foreach (var attr in data.Attributes)
{
attr.Attribute.LocalSamplerID = sampleIndex;
VoxelsAreIndependent &= !attr.Attribute.RequiresColumns();
sampleIndex++;
}
//Populate ShaderSourceCollections and temp lists
foreach (var attr in data.Attributes)
{
if (attr.Stage != VoxelizationStage.Post)
{
continue;
}
if (attr.Output)
{
Indirect.Add(attr.Attribute.GetVoxelizationShader());
IndirectVoxels.Add(attr.Attribute);
}
else
{
Temp.Add(attr.Attribute.GetVoxelizationShader());
TempVoxels.Add(attr.Attribute);
}
}
var BufferWriter = VoxelsAreIndependent ? BufferToTexture : BufferToTextureColumns;
for (int i = 0; i < IndirectVoxels.Count; i++)
{
var attr = IndirectVoxels[i];
attr.UpdateVoxelizationLayout($"AttributesIndirect[{i}]");
}
for (int i = 0; i < TempVoxels.Count; i++)
{
var attr = TempVoxels[i];
attr.UpdateVoxelizationLayout($"AttributesTemp[{i}]");
}
foreach (var attr in data.Attributes)
{
attr.Attribute.ApplyVoxelizationParameters(BufferWriter.Parameters);
}
int processYSize = VoxelsAreIndependent ? (int)ClipMapResolution.Y : 1;
processYSize *= (UpdatesPerFrame == UpdateMethods.SingleClipmap) ? 1 : ClipMapCount;
BufferWriter.ThreadGroupCounts = VoxelsAreIndependent ? new Int3(32, 32, 32) : new Int3(32, 1, 32);
BufferWriter.ThreadNumbers = new Int3((int)ClipMapResolution.X / BufferWriter.ThreadGroupCounts.X, processYSize / BufferWriter.ThreadGroupCounts.Y, (int)ClipMapResolution.Z / BufferWriter.ThreadGroupCounts.Z);
BufferWriter.Parameters.Set(BufferToTextureKeys.VoxelFragments, FragmentsBuffer);
BufferWriter.Parameters.Set(BufferToTextureKeys.clipMapResolution, ClipMapResolution);
BufferWriter.Parameters.Set(BufferToTextureKeys.storageUints, storageUints);
BufferWriter.Parameters.Set(BufferToTextureKeys.clipOffset, (uint)(UpdatesPerFrame == UpdateMethods.SingleClipmap ? ClipMapCurrent : 0));
//Modifiers are stored within attributes, yet need to be able to query their results.
//Ideally a stage stream could resolve this, however due to the lack of pointers, there would be a cyclic dependency of AttributesList->Attribute->Modifier->AttributesList->...
//So instead the results will be stored within a second array that only contains float4s. Unfortunately the only way to iterate through the AttributesList is by foreach, which
//makes it difficult to access the results array (AttributeLocalSamples) by index. So instead it's just all done through this macro...
string IndirectReadAndStoreMacro = "";
string IndirectStoreMacro = "";
for (int i = 0; i < Temp.Count; i++)
{
string iStr = i.ToString();
string sampleIndexStr = TempVoxels[i].LocalSamplerID.ToString();
IndirectReadAndStoreMacro += $"AttributesTemp[{iStr}].InitializeFromBuffer(VoxelFragments, VoxelFragmentsIndex + {TempVoxels[i].BufferOffset}, uint2({TempVoxels[i].BufferOffset} + initialVoxelFragmentsIndex, yStride));\n" +
$"streams.LocalSample[{sampleIndexStr}] = AttributesTemp[{iStr}].SampleLocal();\n\n";
IndirectStoreMacro += $"streams.LocalSample[{sampleIndexStr}] = AttributesTemp[{iStr}].SampleLocal();\n";
}
for (int i = 0; i < Indirect.Count; i++)
{
string iStr = i.ToString();
string sampleIndexStr = IndirectVoxels[i].LocalSamplerID.ToString();
IndirectReadAndStoreMacro += $"AttributesIndirect[{iStr}].InitializeFromBuffer(VoxelFragments, VoxelFragmentsIndex + {IndirectVoxels[i].BufferOffset}, uint2({IndirectVoxels[i].BufferOffset} + initialVoxelFragmentsIndex, yStride));\n" +
$"streams.LocalSample[{sampleIndexStr}] = AttributesIndirect[{iStr}].SampleLocal();\n\n";
IndirectStoreMacro += $"streams.LocalSample[{sampleIndexStr}] = AttributesIndirect[{iStr}].SampleLocal();\n";
}
BufferWriter.Parameters.Set(BufferToTextureKeys.AttributesIndirect, Indirect);
BufferWriter.Parameters.Set(BufferToTextureKeys.AttributesTemp, Temp);
BufferWriter.Parameters.Set(BufferToTextureKeys.IndirectReadAndStoreMacro, IndirectReadAndStoreMacro);
BufferWriter.Parameters.Set(BufferToTextureKeys.IndirectStoreMacro, IndirectStoreMacro);
((RendererBase)BufferWriter).Draw(drawContext);
ClearBuffer.Parameters.Set(ClearBufferKeys.buffer, FragmentsBuffer);
if (UpdatesPerFrame != UpdateMethods.SingleClipmap)
{
//Clear all
ClearBuffer.ThreadNumbers = new Int3(1024, 1, 1);
ClearBuffer.ThreadGroupCounts = new Int3(FragmentsBuffer.ElementCount / 1024, 1, 1);
ClearBuffer.Parameters.Set(ClearBufferKeys.offset, 0);
}
else
{
//Clear next clipmap buffer
ClearBuffer.ThreadNumbers = new Int3(1024, 1, 1);
ClearBuffer.ThreadGroupCounts = new Int3((int)(ClipMapResolution.X * ClipMapResolution.Y * ClipMapResolution.Z * storageUints) / 1024, 1, 1);
ClearBuffer.Parameters.Set(ClearBufferKeys.offset, (int)(((ClipMapCurrent + 1) % ClipMapCount) * ClipMapResolution.X * ClipMapResolution.Y * ClipMapResolution.Z * storageUints));
}
((RendererBase)ClearBuffer).Draw(drawContext);
}
public virtual void Collect(RenderContext Context, Shadows.IShadowMapRenderer ShadowMapRenderer)
{
renderVoxelVolumes = Context.VisibilityGroup.Tags.Get(CurrentRenderVoxelVolumes);
if (renderVoxelVolumes == null || renderVoxelVolumes.Count == 0)
{
return;
}
List <VoxelVolumeComponent> toRemove = new List <VoxelVolumeComponent>();
foreach (var pair in renderVoxelVolumeData)
{
bool used = false;
foreach (var pair2 in renderVoxelVolumes)
{
if (pair2.Key == pair.Key)
{
used = true;
}
}
if (!used)
{
toRemove.Add(pair.Key);
}
}
foreach (var comp in toRemove)
{
renderVoxelVolumeDataList.Remove(renderVoxelVolumeData[comp]);
renderVoxelVolumeData.Remove(comp);
renderVoxelVolumes.Remove(comp);
}
//Create per-volume textures
foreach (var pair in renderVoxelVolumes)
{
var volume = pair.Value;
var bounds = volume.VoxelMatrix.ScaleVector;
RenderVoxelVolumeData data;
if (!renderVoxelVolumeData.TryGetValue(pair.Key, out data))
{
data = new RenderVoxelVolumeData();
renderVoxelVolumeDataList.Add(data);
renderVoxelVolumeData.Add(pair.Key, data);
}
VoxelStorageContext storageContext = new VoxelStorageContext
{
device = Context.GraphicsDevice,
Extents = bounds,
VoxelSize = volume.AproxVoxelSize,
Matrix = volume.VoxelMatrix
};
volume.Storage.UpdateFromContext(storageContext, data);
foreach (var attr in volume.Attributes)
{
attr.PrepareLocalStorage(storageContext, volume.Storage);
}
volume.Storage.UpdateTempStorage(storageContext);
ShaderSourceCollection AttributeIndirect = new ShaderSourceCollection();
ShaderSourceCollection AttributeModifiers = new ShaderSourceCollection();
foreach (var attr in volume.Attributes)
{
AttributeIndirect.Add(attr.GetShader());
attr.AddAttributes(AttributeModifiers);
}
if (AttributeModifiers != data.AttributeModifiers)
{
data.AttributeModifiers = AttributeModifiers;
}
if (AttributeIndirect != data.AttributeIndirect)
{
data.AttributeIndirect = AttributeIndirect;
}
data.VisualizeVoxels = volume.VisualizeVoxels;
data.Attributes = volume.Attributes;
data.Storage = volume.Storage;
data.StorageContext = storageContext;
data.VoxelizationMethod = volume.VoxelizationMethod;
data.VoxelVisualization = volume.VoxelVisualization;
data.Voxelize = volume.Voxelize;
data.ReprView = volume.VoxelizationMethod.CollectViews(VoxelStage, volume, storageContext, Context);
ShadowMapRenderer?.RenderViewsWithShadows.Add(data.ReprView);
}
}