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( );
}
}
public void DispatchDraws(InstanceDataBuffer instanceData)
{
foreach (var drawCommandBuffer in PrimitiveIndirectDrawBuffer.Values)
{
using (drawCommandBuffer.Bind( ))
using (drawCommandBuffer.SourceBucket.Bind( ))
using (instanceData.Bind( ))
{
GL.MultiDrawElementsIndirect(
( All )drawCommandBuffer.PrimitiveType,
All.UnsignedShort,
IntPtr.Zero,
drawCommandBuffer.Count,
0);
}
}
}
public Handle(InstanceDataBuffer instanceDataBuffer)
{
target = instanceDataBuffer;
target.Instances.Clear( );
}
public BindHandle(InstanceDataBuffer instanceDataBuffer)
{
GL.BindVertexBuffer(7, instanceDataBuffer.BufferId, ( IntPtr )0, Vector4.SizeInBytes * 4);
}