public override void Prepare(RenderDrawContext context)
{
for (int index = 0; index < RenderSystem.Views.Count; index++)
{
var view = RenderSystem.Views[index];
var viewFeature = view.Features[RootRenderFeature.Index];
foreach (var viewLayout in viewFeature.Layouts)
{
var voxelizerStorer = viewLayout.GetLogicalGroup(VoxelizerStorerCasterKey);
ParameterCollection VSViewParameters = new ParameterCollection();
ParameterCollection ViewParameters = new ParameterCollection();
RenderVoxelVolumeData data = ReflectiveVoxelRenderer.GetDataForView(view);
if (data == null)
{
continue;
}
VSViewParameters.Set(IsotropicVoxelFragmentKeys.VoxelVolumeW0, data.ClipMaps);
VSViewParameters.Set(IsotropicVoxelFragmentKeys.VoxelFragments, ReflectiveVoxelRenderer.Fragments);
VSViewParameters.Set(IsotropicVoxelFragmentKeys.VoxelFragmentsCounter, ReflectiveVoxelRenderer.FragmentsCounter);
VSViewParameters.Set(IsotropicVoxelFragmentKeys.VoxelMatrix, data.Matrix);
VSViewParameters.Set(IsotropicVoxelFragmentKeys.VoxelMatrixViewport, data.ViewportMatrix);
VSViewParameters.Set(IsotropicVoxelFragmentKeys.clipMapCount, data.ClipMapCount);
VSViewParameters.Set(IsotropicVoxelFragmentKeys.clipMapResolution, data.ClipMapResolution);
var resourceGroup = viewLayout.Entries[view.Index].Resources;
resourceGroup.UpdateLogicalGroup(ref voxelizerStorer, VSViewParameters);
}
}
}
VoxelAttributeEmissionOpacity GetTraceAttr()
{
var lightVoxel = ((LightVoxel)Light.Type);
if (lightVoxel.Volume == null)
{
return(null);
}
RenderVoxelVolumeData data = Voxels.VoxelRenderer.GetDataForComponent(lightVoxel.Volume);
if (data == null)
{
return(null);
}
VoxelAttributeEmissionOpacity traceAttr = null;
foreach (var attr in data.Attributes)
{
if (attr.GetType() == typeof(VoxelAttributeEmissionOpacity))
{
traceAttr = (VoxelAttributeEmissionOpacity)attr;
}
}
return(traceAttr);
}
VoxelAttributeEmissionOpacity GetTraceAttr(RenderVoxelVolumeData data)
{
if (data == null)
{
return(null);
}
VoxelAttributeEmissionOpacity traceAttr = null;
foreach (var attr in data.Attributes)
{
if (attr.GetType() == typeof(VoxelAttributeEmissionOpacity))
{
traceAttr = (VoxelAttributeEmissionOpacity)attr;
}
}
return(traceAttr);
}
public override void ApplyViewParameters(RenderDrawContext context, int viewIndex, ParameterCollection parameters)
{
base.ApplyViewParameters(context, viewIndex, parameters);
var lightVoxel = ((LightVoxel)Light.Type);
var intensity = Light.Intensity;
var intensityBounceScale = lightVoxel.BounceIntensityScale;
var specularIntensity = lightVoxel.SpecularIntensityScale * intensity;
if (viewIndex != 0)
{
intensity *= intensityBounceScale / 3.141592f;
specularIntensity = 0.0f;
}
if (lightVoxel.Volume == null)
{
return;
}
RenderVoxelVolumeData data = Voxels.VoxelRenderer.GetDataForComponent(lightVoxel.Volume);
if (data == null)
{
return;
}
parameters.Set(intensityKey, intensity);
parameters.Set(specularIntensityKey, specularIntensity);
if (GetTraceAttr() != null)
{
lightVoxel.DiffuseMarcher?.ApplyViewParameters(parameters);
lightVoxel.SpecularMarcher?.ApplyViewParameters(parameters);
GetTraceAttr().ApplyViewParameters(parameters);
}
}
public override void ApplyViewParameters(RenderDrawContext context, int viewIndex, ParameterCollection parameters)
{
base.ApplyViewParameters(context, viewIndex, parameters);
var lightVoxel = ((LightVoxel)Light.Type);
var intensity = Light.Intensity;
var intensityBounceScale = lightVoxel.BounceIntensityScale;
RenderVoxelVolumeData data = Xenko.Rendering.Shadows.ReflectiveVoxelRenderer.GetDataForComponent(lightVoxel.Volume);
if (data == null)
{
return;
}
var voxelMatrix = data.Matrix;// ViewProjection;// Matrix.Invert(Matrix.RotationQuaternion(lightVoxel.Rotation));
// global parameters
parameters.Set(intensityKey, intensity);
parameters.Set(intensityBounceScaleKey, intensityBounceScale);
parameters.Set(voxelMatrixKey, voxelMatrix);
if (data.ClipMaps != null)
{
parameters.Set(voxelVolumekey, data.ClipMaps);
parameters.Set(mipMapsVolumekey, data.MipMaps);
}
else
{
parameters.Set(voxelVolumekey, null);
parameters.Set(mipMapsVolumekey, null);
}
parameters.Set(voxelVolumeMipCountKey, 1);
parameters.Set(voxelVolumeClipMapCountKey, data.ClipMapCount);
}
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);
}
}