public void CreateIndirectDrawCommands(BucketManager bucketManager, InstanceDataBuffer instanceData)
{
foreach (var commandBuffer in PrimitiveIndirectDrawBuffer.Values)
{
if (commandBuffer.Count > 0)
{
return;
}
commandBuffer.Clear( );
}
foreach (var part in InstanceManager.Parts)
{
var bucket = bucketManager.GetBucketResource(part);
var primitiveType = part.PrimitiveType;
var bufferKey = new IndirectCommandBufferKey(bucket, primitiveType);
if (!PrimitiveIndirectDrawBuffer.ContainsKey(bufferKey))
{
PrimitiveIndirectDrawBuffer[bufferKey] = new IndirectDrawCommandBuffer(primitiveType, bucket);
}
PrimitiveIndirectDrawBuffer[bufferKey].AddDrawCommand(part, bucket,
instanceData[part]);
}
foreach (var indirectDrawCommandBuffers in PrimitiveIndirectDrawBuffer.Values)
{
indirectDrawCommandBuffers.CreateCommandBuffer( );
}
}
/// <summary>
/// Buffers array data and creates draw commands as needed for a given object
/// </summary>
/// <param name="eye">Viewer camera used to select detail level</param>
/// <param name="objectBlock">Object to draw</param>
/// <param name="instance">Instance data of object to draw</param>
private void Dispatch(Camera eye, ObjectBlock objectBlock,
IH2ObjectInstance instance)
{
CacheKey cacheKey;
if (!objectBlock.TryGetCacheKey(out cacheKey))
{
return;
}
var modelBlock = objectBlock.Model.Get <ModelBlock>(cacheKey);
var renderBlock = modelBlock?.RenderModel.Get <RenderModelBlock>(cacheKey);
if (renderBlock == null)
{
return;
}
BucketManager.UnpackVertexData(renderBlock);
// TODO use bounding offset and bounding radius here x
var distance = eye.DistanceOf(instance.ObjectDatum.Position);
var detailLevel = GetDetailLevel(modelBlock, distance);
var variant = StringIdent.Zero;
var type = instance.GetType( );
if (!SupportsPermutations.ContainsKey(type))
{
SupportsPermutations[type] = type.Field("PermutationData") != null;
}
var supportsPermutation = SupportsPermutations[type];
if (supportsPermutation)
{
var instanceVariant = StringIdent.Zero;
var defaultModelVariant = objectBlock.DefaultModelVariant;
// Select the instance variant if it exists, else select the default variant if it exists,
// else default to zero
variant = instanceVariant == StringIdent.Zero
? defaultModelVariant == StringIdent.Zero ? StringIdent.Zero : defaultModelVariant
: instanceVariant;
}
var hasVariant = variant != StringIdent.Zero;
var hasRegions = modelBlock.ModelRegionBlock.Length > 0;
// Here sections are collected using the detail level and chosen variant (if it exists)
RenderModelSectionBlock[] sections;
if (hasVariant)
{
var variantBlock = modelBlock.Variants.Single(e => e.Name == variant);
sections = ProcessVariant(variantBlock, renderBlock, detailLevel);
}
else if (hasRegions)
{
sections = ProcessRegions(modelBlock.ModelRegionBlock, renderBlock, detailLevel);
}
else
{
sections = renderBlock.Sections;
}
// Loop through all the sections and load the vertex data if needed and pass the part along
// to the draw manager to handle sorting and grouping
foreach (var renderModelSection in sections)
{
if (renderModelSection.SectionData.Length <= 0)
{
continue;
}
_bucketManager.BufferPartData(renderModelSection.SectionData[0].Section);
foreach (var part in renderModelSection.SectionData[0].Section.Parts)
{
var materialBlock = renderBlock.Materials[part.Material];
// Create an instance for this part and assign a shader for it
_drawManager.CreateInstance(part, instance, supportsPermutation);
_drawManager.AssignShader(part, cacheKey, materialBlock.Shader.Ident);
}
}
}
public ScenarioManager( )
{
_materialManager = new MaterialManager( );
_drawManager = new DrawManager( );
_bucketManager = new BucketManager( );
}
public Handle(BucketManager bucketManager)
{
_bucketManager = bucketManager;
}