public void PostProcess(VoxelStorageContext storageContext, RenderDrawContext drawContext, RenderVoxelVolumeData 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"
};
}
var BufferWriter = BufferToTextureColumns;
for (int i = 0; i < data.Attributes.Count; i++)
{
var attr = data.Attributes[i];
attr.UpdateLayout("AttributesIndirect[" + i + "]");
}
foreach (var attr in data.Attributes)
{
attr.ApplyWriteParameters(BufferWriter.Parameters);
}
if (BufferWriter == BufferToTextureColumns)
{
BufferWriter.ThreadGroupCounts = new Int3(32, 1, 32);
BufferWriter.ThreadNumbers = new Int3((int)ClipMapResolution.X / BufferWriter.ThreadGroupCounts.X, ClipMapCount / BufferWriter.ThreadGroupCounts.Y, (int)ClipMapResolution.Z / BufferWriter.ThreadGroupCounts.Z);
}
else
{
BufferWriter.ThreadGroupCounts = new Int3(32, 16, 32);
BufferWriter.ThreadNumbers = new Int3((int)ClipMapResolution.X / BufferWriter.ThreadGroupCounts.X, (int)ClipMapResolution.Y * ClipMapCount / 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.AttributesIndirect, data.AttributeIndirect);
BufferWriter.Parameters.Set(BufferToTextureKeys.Modifiers, data.AttributeModifiers);
((RendererBase)BufferWriter).Draw(drawContext);
drawContext.CommandList.ClearReadWrite(FragmentsBuffer, new Vector4(0));
ClearBuffer.ThreadGroupCounts = new Int3(4096 * storageUints * 2, 1, 1);
ClearBuffer.ThreadNumbers = new Int3(FragmentsBuffer.ElementCount / ClearBuffer.ThreadGroupCounts.X, 1 / ClearBuffer.ThreadGroupCounts.Y, 1 / ClearBuffer.ThreadGroupCounts.Z);
ClearBuffer.Parameters.Set(ClearBufferKeys.buffer, FragmentsBuffer);
((RendererBase)ClearBuffer).Draw(drawContext);
}
public virtual void Collect(RenderContext Context, IShadowMapRenderer ShadowMapRenderer)
{
renderVoxelVolumes = Context.VisibilityGroup.Tags.Get(CurrentRenderVoxelVolumes);
if (renderVoxelVolumes == null)
{
return;
}
Vector3 resolutionMax = new Vector3(0, 0, 0);
int fragmentsMax = 0;
int fragmentsCountMax = 0;
//Create per-volume textures
foreach (var pair in renderVoxelVolumes)
{
var volume = pair.Value;
var bounds = volume.ClipMapMatrix.ScaleVector;
var resolution = bounds / volume.AproxVoxelSize;
//Calculate closest power of 2 on each axis
resolution.X = (float)Math.Pow(2, Math.Round(Math.Log(resolution.X, 2)));
resolution.Y = (float)Math.Pow(2, Math.Round(Math.Log(resolution.Y, 2)));
resolution.Z = (float)Math.Pow(2, Math.Round(Math.Log(resolution.Z, 2)));
resolution = new Vector3(resolution.X, resolution.Z, resolution.Y);//Temporary
Vector3 ClipMapResolution = new Vector3(resolution.X, resolution.Y, resolution.Z * volume.ClipMapCount);
Vector3 MipMapResolution = resolution / 2;
RenderVoxelVolumeData data;
if (!renderVoxelVolumeData.TryGetValue(pair.Key, out data))
{
renderVoxelVolumeData.Add(pair.Key, data = new RenderVoxelVolumeData());
}
data.ClipMapResolution = resolution;
if (NeedToRecreateTexture(data.ClipMaps, ClipMapResolution))
{
data.ClipMaps = Xenko.Graphics.Texture.New3D(Context.GraphicsDevice, (int)ClipMapResolution.X, (int)ClipMapResolution.Y, (int)ClipMapResolution.Z, new MipMapCount(false), Xenko.Graphics.PixelFormat.R16G16B16A16_Float, TextureFlags.ShaderResource | TextureFlags.UnorderedAccess);
}
if (NeedToRecreateTexture(data.MipMaps, resolution))
{
data.MipMaps = Xenko.Graphics.Texture.New3D(Context.GraphicsDevice, (int)MipMapResolution.X, (int)MipMapResolution.Y, (int)MipMapResolution.Z, new MipMapCount(true), Xenko.Graphics.PixelFormat.R16G16B16A16_Float, TextureFlags.ShaderResource | TextureFlags.UnorderedAccess);
}
resolutionMax = Vector3.Min(new Vector3(256), Vector3.Max(resolutionMax, resolution));
fragmentsMax = Math.Max(fragmentsMax, (int)(ClipMapResolution.X * ClipMapResolution.Y * ClipMapResolution.Z));
fragmentsCountMax = Math.Max(fragmentsCountMax, (int)(ClipMapResolution.X * ClipMapResolution.Y) * volume.ClipMapCount);
}
//Create re-usable textures
float resolutionMaxSide = Math.Max(Math.Max(resolutionMax.X, resolutionMax.Y), resolutionMax.Z);
if (NeedToRecreateTexture(MSAARenderTarget, new Vector3(resolutionMaxSide, resolutionMaxSide, 1)))
{
MSAARenderTarget = Texture.New(Context.GraphicsDevice, TextureDescription.New2D((int)resolutionMaxSide, (int)resolutionMaxSide, new MipMapCount(false), PixelFormat.R8G8B8A8_UNorm, TextureFlags.RenderTarget, 1, GraphicsResourceUsage.Default, MultisampleCount.X8), null);
}
if (NeedToRecreateBuffer(Fragments, fragmentsMax))
{
Fragments = Xenko.Graphics.Buffer.Structured.New(Context.GraphicsDevice, fragmentsMax, 24, true);
}
if (NeedToRecreateBuffer(FragmentsCounter, fragmentsCountMax))
{
FragmentsCounter = Xenko.Graphics.Buffer.Typed.New(Context.GraphicsDevice, fragmentsCountMax, PixelFormat.R32_SInt, true);
}
Vector3 MipMapResolutionMax = resolutionMax / 2;
if (TempMipMaps == null || !TextureDimensionsEqual(TempMipMaps[0], MipMapResolutionMax))
{
if (TempMipMaps != null)
{
for (int i = 0; i < TempMipMaps.Length; i++)
{
TempMipMaps[0].Dispose();
}
}
int mipCount = 1 + (int)Math.Floor(Math.Log(Math.Max(MipMapResolutionMax.X, Math.Max(MipMapResolutionMax.Y, MipMapResolutionMax.Z)), 2));
TempMipMaps = new Xenko.Graphics.Texture[mipCount];
for (int i = 0; i < TempMipMaps.Length; i++)
{
TempMipMaps[i] = Xenko.Graphics.Texture.New3D(Context.GraphicsDevice, (int)MipMapResolutionMax.X, (int)MipMapResolutionMax.Y, (int)MipMapResolutionMax.Z, false, Xenko.Graphics.PixelFormat.R16G16B16A16_Float, TextureFlags.ShaderResource | TextureFlags.UnorderedAccess);
MipMapResolutionMax /= 2;
MipMapResolutionMax = Vector3.Max(new Vector3(1), MipMapResolutionMax);
}
}
if (Generate3DMipmaps == null)
{
Generate3DMipmaps = new Xenko.Rendering.ComputeEffect.ComputeEffectShader(Context)
{
ShaderSourceName = "Generate3DMipmaps"
};
ClearBuffer = new Xenko.Rendering.ComputeEffect.ComputeEffectShader(Context)
{
ShaderSourceName = "ClearBuffer"
};
ArrangeFragments = new Xenko.Rendering.ComputeEffect.ComputeEffectShader(Context)
{
ShaderSourceName = "ArrangeFragments"
};
}
//Create all the views
reflectiveVoxelViews.Clear();
foreach (var pair in renderVoxelVolumes)
{
var volume = pair.Value;
var data = renderVoxelVolumeData[pair.Key];
var bounds = volume.ClipMapMatrix.ScaleVector;
var shadowRenderView = new RenderView();
float nearClip = 0.1f;
float farClip = 999.7f;
//Currently hard coded and kinda odd
shadowRenderView.View = Matrix.Translation(0.0f, 1.0f, 0.0f) * Matrix.RotationX(-3.1415f / 2.0f);
shadowRenderView.Projection = Matrix.OrthoRH(bounds.X * (float)Math.Pow(2, volume.ClipMapCount), bounds.Z * (float)Math.Pow(2, volume.ClipMapCount), nearClip, farClip);
Matrix.Multiply(ref shadowRenderView.View, ref shadowRenderView.Projection, out shadowRenderView.ViewProjection);
shadowRenderView.Frustum = new BoundingFrustum(ref shadowRenderView.ViewProjection);
shadowRenderView.CullingMode = CameraCullingMode.Frustum;
shadowRenderView.ViewSize = new Vector2(1024, 1024);
float maxRes = Math.Max(Math.Max(data.ClipMapResolution.X, data.ClipMapResolution.Y), data.ClipMapResolution.Z);
var rotmat = new Matrix(1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1);//xzy
var viewToTexTrans = Matrix.Translation(0.5f, 0.5f, 0.5f);
var viewToTexScale = Matrix.Scaling(0.5f, 0.5f, 0.5f);
var viewportAspect = Matrix.Scaling(data.ClipMapResolution / maxRes);
// Matrix BaseVoxelMatrix = transmat * scalemat * rotmat;
Matrix BaseVoxelMatrix = volume.ClipMapMatrix * Matrix.Identity;
BaseVoxelMatrix.Invert();
BaseVoxelMatrix = BaseVoxelMatrix * Matrix.Scaling(2f, 2f, 2f) * rotmat;
data.Matrix = BaseVoxelMatrix * viewToTexScale * viewToTexTrans;
data.ViewportMatrix = BaseVoxelMatrix * viewportAspect;
data.ClipMapCount = volume.ClipMapCount;
shadowRenderView.NearClipPlane = nearClip;
shadowRenderView.FarClipPlane = farClip;
shadowRenderView.RenderStages.Add(VoxelStage);
reflectiveVoxelViews.Add(shadowRenderView, pair.Key);
// Add the render view for the current frame
Context.RenderSystem.Views.Add(shadowRenderView);
// Collect objects in shadow views
Context.VisibilityGroup.TryCollect(shadowRenderView);
ShadowMapRenderer?.RenderViewsWithShadows.Add(shadowRenderView);
}
}
public void PostProcess(RenderDrawContext drawContext, string MipMapShader)
{
if (VoxelMipmapSimple == null || curMipMapShader != MipMapShader)
{
if (VoxelMipmapSimple != null)
{
VoxelMipmapSimple.Dispose();
}
VoxelMipmapSimple = new Xenko.Rendering.ComputeEffect.ComputeEffectShader(drawContext.RenderContext)
{
ShaderSourceName = MipMapShader
};
}
if (VoxelMipmapSimpleGroups == null || VoxelMipmapSimpleGroups.Length != TempMipMaps.Length || curMipMapShader != MipMapShader)
{
if (VoxelMipmapSimpleGroups != null)
{
foreach (var shader in VoxelMipmapSimpleGroups)
{
shader.Dispose();
}
}
VoxelMipmapSimpleGroups = new Xenko.Rendering.ComputeEffect.ComputeEffectShader[TempMipMaps.Length];
for (int i = 0; i < VoxelMipmapSimpleGroups.Length; i++)
{
VoxelMipmapSimpleGroups[i] = new Xenko.Rendering.ComputeEffect.ComputeEffectShader(drawContext.RenderContext)
{
ShaderSourceName = MipMapShader
};
}
}
curMipMapShader = MipMapShader;
//Mipmap detailed clipmaps into less detailed ones
Vector3 totalResolution = ClipMapResolution * new Vector3(1, LayoutSize, 1);
Int3 threadGroupCounts = new Int3(32, 32, 32);
if (MipmapInner)
{
for (int i = 0; i < ClipMapCount - 1; i++)
{
VoxelMipmapSimple.ThreadGroupCounts = threadGroupCounts;
VoxelMipmapSimple.ThreadNumbers = new Int3((int)totalResolution.X / threadGroupCounts.X, (int)totalResolution.Y / threadGroupCounts.Y, (int)totalResolution.Z / threadGroupCounts.Z);
VoxelMipmapSimple.Parameters.Set(VoxelMipmapSimpleKeys.ReadTex, ClipMaps);
VoxelMipmapSimple.Parameters.Set(VoxelMipmapSimpleKeys.WriteTex, TempMipMaps[0]);
VoxelMipmapSimple.Parameters.Set(VoxelMipmapSimpleKeys.ReadOffset, new Vector3(0, (int)totalResolution.Y * i, 0));
((RendererBase)VoxelMipmapSimple).Draw(drawContext);
//Copy each axis, ignoring the top and bottom plane
for (int axis = 0; axis < LayoutSize; axis++)
{
int offset = axis * (int)ClipMapResolution.Y;
drawContext.CommandList.CopyRegion(TempMipMaps[0], 0,
new ResourceRegion(
0, offset / 2 + 1, 0,
(int)ClipMapResolution.X / 2, offset / 2 + (int)ClipMapResolution.Y / 2 - 1, (int)ClipMapResolution.Z / 2
),
ClipMaps, 0,
(int)ClipMapResolution.X / 4, (int)totalResolution.Y * (i + 1) + offset + (int)ClipMapResolution.Y / 4 + 1, (int)ClipMapResolution.Z / 4);
}
}
}
Vector3 resolution = ClipMapResolution;
threadGroupCounts = new Int3((int)resolution.X, (int)resolution.Y, (int)resolution.Z) / 4;
resolution.Y *= LayoutSize;
//Mipmaps for the largest clipmap
for (int i = 0; i < TempMipMaps.Length - 1; i++)
{
var mipmapShader = VoxelMipmapSimpleGroups[i];
resolution /= 2;
if (resolution.X < 1)
{
resolution.X = 1;
}
if (resolution.Y < 1)
{
resolution.Y = 1;
}
if (resolution.Z < 1)
{
resolution.Z = 1;
}
if (resolution.X < threadGroupCounts.X || resolution.Y < threadGroupCounts.Y || resolution.Z < threadGroupCounts.Z)
{
threadGroupCounts /= 4;
if (threadGroupCounts.X < 1)
{
threadGroupCounts.X = 1;
}
if (threadGroupCounts.Y < 1)
{
threadGroupCounts.Y = 1;
}
if (threadGroupCounts.Z < 1)
{
threadGroupCounts.Z = 1;
}
}
mipmapShader.ThreadGroupCounts = threadGroupCounts;
mipmapShader.ThreadNumbers = new Int3((int)resolution.X / threadGroupCounts.X, (int)resolution.Y / threadGroupCounts.Y, (int)resolution.Z / threadGroupCounts.Z);
if (i == 0)
{
mipmapShader.Parameters.Set(VoxelMipmapSimpleKeys.ReadTex, ClipMaps);
mipmapShader.Parameters.Set(VoxelMipmapSimpleKeys.ReadOffset, new Vector3(0, (int)ClipMapResolution.Y * LayoutSize * (ClipMapCount - 1), 0));
}
else
{
mipmapShader.Parameters.Set(VoxelMipmapSimpleKeys.ReadTex, TempMipMaps[i - 1]);
mipmapShader.Parameters.Set(VoxelMipmapSimpleKeys.ReadOffset, new Vector3(0, 0, 0));
}
mipmapShader.Parameters.Set(VoxelMipmapSimpleKeys.WriteTex, TempMipMaps[i]);
((RendererBase)mipmapShader).Draw(drawContext);
//Don't seem to be able to read and write to the same texture, even if the views
//point to different mipmaps.
drawContext.CommandList.CopyRegion(TempMipMaps[i], 0, null, MipMaps, i);
}
}
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 void PostProcess(RenderDrawContext drawContext, ShaderSource[] mipmapShaders)
{
if (mipmapShaders.Length != LayoutSize)
{
return;
}
if (VoxelMipmapSimple == null)
{
VoxelMipmapSimple = new Xenko.Rendering.ComputeEffect.ComputeEffectShader(drawContext.RenderContext)
{
ShaderSourceName = "Voxel2x2x2MipmapEffect"
};
}
if (VoxelMipmapSimpleGroups == null || VoxelMipmapSimpleGroups.Length != LayoutSize || VoxelMipmapSimpleGroups[0].Length != TempMipMaps.Length)
{
if (VoxelMipmapSimpleGroups != null)
{
for (int axis = 0; axis < LayoutSize; axis++)
{
if (VoxelMipmapSimpleGroups[axis] != null)
{
foreach (var shader in VoxelMipmapSimpleGroups[axis])
{
shader.Dispose();
}
}
}
}
VoxelMipmapSimpleGroups = new Xenko.Rendering.ComputeEffect.ComputeEffectShader[LayoutSize][];
for (int axis = 0; axis < LayoutSize; axis++)
{
VoxelMipmapSimpleGroups[axis] = new Xenko.Rendering.ComputeEffect.ComputeEffectShader[TempMipMaps.Length];
for (int i = 0; i < VoxelMipmapSimpleGroups[axis].Length; i++)
{
VoxelMipmapSimpleGroups[axis][i] = new Xenko.Rendering.ComputeEffect.ComputeEffectShader(drawContext.RenderContext)
{
ShaderSourceName = "Voxel2x2x2MipmapEffect"
};
}
}
}
int offsetIndex = 0;
//Mipmap detailed clipmaps into less detailed ones
Vector3 totalResolution = ClipMapResolution * new Vector3(1, LayoutSize, 1);
Int3 threadGroupCounts = new Int3(32, 32, 32);
if (DownsampleFinerClipMaps)
{
for (int i = 0; i < ClipMapCount - 1; i++)
{
Vector3 Offset = MippingOffset[offsetIndex];
VoxelMipmapSimple.ThreadNumbers = new Int3(8);
VoxelMipmapSimple.ThreadGroupCounts = (Int3)((ClipMapResolution / 2f) / (Vector3)VoxelMipmapSimple.ThreadNumbers);
for (int axis = 0; axis < LayoutSize; axis++)
{
VoxelMipmapSimple.Parameters.Set(Voxel2x2x2MipmapKeys.ReadTex, ClipMaps);
VoxelMipmapSimple.Parameters.Set(Voxel2x2x2MipmapKeys.WriteTex, TempMipMaps[0]);
VoxelMipmapSimple.Parameters.Set(Voxel2x2x2MipmapKeys.ReadOffset, -(Vector3.Mod(Offset, new Vector3(2))) + new Vector3(0, (int)totalResolution.Y * i + (int)ClipMapResolution.Y * axis, 0));
VoxelMipmapSimple.Parameters.Set(Voxel2x2x2MipmapKeys.WriteOffset, new Vector3(0, ClipMapResolution.Y / 2 * axis, 0));
VoxelMipmapSimple.Parameters.Set(Voxel2x2x2MipmapKeys.mipmapper, mipmapShaders[axis]);
((RendererBase)VoxelMipmapSimple).Draw(drawContext);
}
Offset -= Vector3.Mod(Offset, new Vector3(2));
//Copy each axis, ignoring the top and bottom plane
for (int axis = 0; axis < LayoutSize; axis++)
{
int axisOffset = axis * (int)ClipMapResolution.Y;
Int3 CopySize = new Int3((int)ClipMapResolution.X / 2 - 2, (int)ClipMapResolution.Y / 2 - 2, (int)ClipMapResolution.Z / 2 - 2);
Int3 DstMinBound = new Int3((int)ClipMapResolution.X / 4 + (int)Offset.X / 2 + 1, (int)totalResolution.Y * (i + 1) + axisOffset + (int)ClipMapResolution.Y / 4 + 1 + (int)Offset.Y / 2, (int)ClipMapResolution.Z / 4 + (int)Offset.Z / 2 + 1);
Int3 DstMaxBound = DstMinBound + CopySize;
DstMaxBound = Int3.Min(DstMaxBound, new Int3((int)totalResolution.X, (int)totalResolution.Y * (i + 2), (int)totalResolution.Z));
DstMinBound = Int3.Min(DstMinBound, new Int3((int)totalResolution.X, (int)totalResolution.Y * (i + 2), (int)totalResolution.Z));
DstMaxBound = Int3.Max(DstMaxBound, new Int3(0, (int)totalResolution.Y * (i + 1), 0));
DstMinBound = Int3.Max(DstMinBound, new Int3(0, (int)totalResolution.Y * (i + 1), 0));
Int3 SizeBound = DstMaxBound - DstMinBound;
Int3 SrcMinBound = new Int3(1, axisOffset / 2 + 1, 1);
Int3 SrcMaxBound = SrcMinBound + SizeBound;
if (SizeBound.X > 0 && SizeBound.Y > 0 && SizeBound.Z > 0)
{
drawContext.CommandList.CopyRegion(TempMipMaps[0], 0,
new ResourceRegion(
SrcMinBound.X, SrcMinBound.Y, SrcMinBound.Z,
SrcMaxBound.X, SrcMaxBound.Y, SrcMaxBound.Z
),
ClipMaps, 0,
DstMinBound.X, DstMinBound.Y, DstMinBound.Z);
}
}
offsetIndex++;
}
}
Vector3 resolution = ClipMapResolution;
offsetIndex = ClipMapCount - 1;
//Mipmaps for the largest clipmap
for (int i = 0; i < TempMipMaps.Length - 1; i++)
{
Vector3 Offset = MippingOffset[offsetIndex];
resolution /= 2;
Vector3 threadNums = Vector3.Min(resolution, new Vector3(8));
for (int axis = 0; axis < LayoutSize; axis++)
{
var mipmapShader = VoxelMipmapSimpleGroups[axis][i];
mipmapShader.ThreadNumbers = (Int3)(threadNums);
mipmapShader.ThreadGroupCounts = (Int3)(resolution / threadNums);
if (i == 0)
{
mipmapShader.Parameters.Set(Voxel2x2x2MipmapKeys.ReadTex, ClipMaps);
mipmapShader.Parameters.Set(Voxel2x2x2MipmapKeys.ReadOffset, -Offset + new Vector3(0, (int)ClipMapResolution.Y * LayoutSize * (ClipMapCount - 1) + (int)ClipMapResolution.Y * axis, 0));
mipmapShader.Parameters.Set(Voxel2x2x2MipmapKeys.WriteOffset, new Vector3(0, resolution.Y * axis, 0));
}
else
{
mipmapShader.Parameters.Set(Voxel2x2x2MipmapKeys.ReadTex, TempMipMaps[i - 1]);
mipmapShader.Parameters.Set(Voxel2x2x2MipmapKeys.ReadOffset, -Offset + new Vector3(0, resolution.Y * axis * 2, 0));
mipmapShader.Parameters.Set(Voxel2x2x2MipmapKeys.WriteOffset, new Vector3(0, resolution.Y * axis, 0));
}
mipmapShader.Parameters.Set(Voxel2x2x2MipmapKeys.WriteTex, TempMipMaps[i]);
mipmapShader.Parameters.Set(Voxel2x2x2MipmapKeys.mipmapper, mipmapShaders[axis]);
((RendererBase)mipmapShader).Draw(drawContext);
}
//Don't seem to be able to read and write to the same texture, even if the views
//point to different mipmaps.
drawContext.CommandList.CopyRegion(TempMipMaps[i], 0, null, MipMaps, i);
offsetIndex++;
}
Array.Copy(PerMapOffsetScale, PerMapOffsetScaleCurrent, PerMapOffsetScale.Length);
}
