ezEngine Release 26.9
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ezKrautGeneratorResource Class Reference

#include <KrautGeneratorResource.h>

Inheritance diagram for ezKrautGeneratorResource:

Public Member Functions

const ezSharedPtr< ezKrautGeneratorResourceDescriptor > & GetDescriptor () const
 
ezUInt32 GetLodCount () const
 Returns the number of runtime LODs (indices 1..N in the internal representation; excludes LOD0 full-detail).
 
float GetLodDistance (ezUInt32 uiLodIndex) const
 Returns the max distance for a runtime LOD (0-based: 0 = first runtime LOD).
 
ezKrautTreeResourceHandle GetOrCreateTreeResource (ezUInt32 uiSeed)
 
bool RequestLodMesh (ezKrautTreeResourceHandle hTree, ezUInt32 uiSeed, ezUInt32 uiLodIndex, bool bImmediate) const
 
- Public Member Functions inherited from ezResource
EZ_ALWAYS_INLINE ezStringView GetResourceID () const
 Returns the unique ID that identifies this resource. On a file resource this might be a path. Can also be a GUID or any other scheme that uniquely identifies the resource.
 
EZ_ALWAYS_INLINE ezUInt64 GetResourceIDHash () const
 Returns the hash of the unique ID.
 
void SetResourceDescription (ezStringView sDescription)
 The resource description allows to store an additional string that might be more descriptive during debugging, than the unique ID.
 
const ezStringGetResourceDescription () const
 The resource description allows to store an additional string that might be more descriptive during debugging, than the unique ID.
 
const ezStringGetResourceIdOrDescription () const
 The returns the resource description, if available, otherwise the resource ID.
 
EZ_ALWAYS_INLINE ezResourceState GetLoadingState () const
 Returns the current state in which this resource is in.
 
EZ_ALWAYS_INLINE ezUInt8 GetNumQualityLevelsDiscardable () const
 Returns the current maximum quality level that the resource could have.
 
EZ_ALWAYS_INLINE ezUInt8 GetNumQualityLevelsLoadable () const
 Returns how many quality levels the resource may additionally load.
 
float GetLoadingPriority (ezTime now) const
 Returns the priority that is used by the resource manager to determine which resource to load next.
 
ezResourcePriority GetPriority () const
 Returns the current resource priority.
 
void SetPriority (ezResourcePriority priority)
 Changes the current resource priority.
 
EZ_ALWAYS_INLINE const ezBitflags< ezResourceFlags > & GetBaseResourceFlags () const
 Returns the basic flags for the resource type. Mostly used the resource manager.
 
EZ_ALWAYS_INLINE const MemoryUsageGetMemoryUsage () const
 Returns the information about the current memory usage of the resource.
 
EZ_ALWAYS_INLINE ezTime GetLastAcquireTime () const
 Returns the time at which the resource was (tried to be) acquired last. If a resource is acquired using ezResourceAcquireMode::PointerOnly, this does not update the last acquired time, since the resource is not acquired for full use.
 
EZ_ALWAYS_INLINE ezInt32 GetReferenceCount () const
 Returns the reference count of this resource.
 
EZ_ALWAYS_INLINE const ezTimestampGetLoadedFileModificationTime () const
 Returns the modification date of the file from which this resource was loaded.
 
EZ_ALWAYS_INLINE ezUInt32 GetCurrentResourceChangeCounter () const
 Returns the current value of the resource change counter. Can be used to detect whether the resource has changed since using it last time.
 
EZ_ALWAYS_INLINE void IncResourceChangeCounter ()
 Allows to manually increase the resource change counter to signal that dependent code might need to update.
 
virtual void ResetResource ()
 If the resource has modifications from the original state, it should reset itself to that state now (or force a reload on itself).
 
void PrintHandleStackTraces ()
 Prints the stack-traces for all handles that currently reference this resource.
 
- Public Member Functions inherited from ezReflectedClass
virtual const ezRTTIGetDynamicRTTI () const
 
bool IsInstanceOf (const ezRTTI *pType) const
 Returns whether the type of this instance is of the given type or derived from it.
 
template<typename T >
EZ_ALWAYS_INLINE bool IsInstanceOf () const
 Returns whether the type of this instance is of the given type or derived from it.
 

Private Member Functions

virtual ezResourceLoadDesc UnloadData (Unload WhatToUnload) override
 Requests the resource to unload another quality level. If bFullUnload is true, the resource should unload all data, because it is going to be deleted afterwards.
 
virtual ezResourceLoadDesc UpdateContent (ezStreamReader *Stream) override
 Called whenever more data for the resource is available. The resource must read the stream to update it's data.
 
virtual void UpdateMemoryUsage (MemoryUsage &out_NewMemoryUsage) override
 This function must be overridden by all resource types.
 

Additional Inherited Members

- Public Types inherited from ezResource
enum class  DoUpdate { OnMainThread , OnAnyThread , OnGraphicsResourceThreads }
 
- Static Public Member Functions inherited from ezNoBase
static const ezRTTIGetStaticRTTI ()
 
- Public Attributes inherited from ezResource
ezEvent< const ezResourceEvent &, ezMutexm_ResourceEvents
 
- Static Public Attributes inherited from ezResource
static DoUpdate UpdateGraphicsResource = ezResource::DoUpdate::OnAnyThread
 
- Protected Types inherited from ezResource
enum class  Unload { AllQualityLevels , OneQualityLevel }
 
- Protected Member Functions inherited from ezResource
 ezResource (DoUpdate ResourceUpdateThread, ezUInt8 uiQualityLevelsLoadable)
 Default constructor.
 
virtual ~ezResource ()
 virtual destructor.
 
MemoryUsageModifyMemoryUsage ()
 Non-const version for resources that want to write this variable directly.
 
void SetIsReloadable (bool bIsReloadable)
 Call this to specify whether a resource is reloadable.
 
void SetHasLoadingFallback (bool bHasLoadingFallback)
 Used internally by the code injection macros.
 

Detailed Description

Resource that holds the Kraut tree generator descriptor and manages per-seed ezKrautTreeResource instances.

A single generator resource is shared by all ezKrautTreeComponent instances that reference the same tree asset. For each random seed in use, the generator creates one ezKrautTreeResource and asynchronously fills it with mesh data, LOD by LOD.

LOD index 0 is the full-detail preview LOD used in the asset editor and is never auto-selected by distance at runtime. LOD indices 1..N are the runtime LODs selected by camera distance.

Member Function Documentation

◆ GetOrCreateTreeResource()

ezKrautTreeResourceHandle ezKrautGeneratorResource::GetOrCreateTreeResource ( ezUInt32  uiSeed)

Returns (creating if needed) an empty tree resource skeleton for the given seed. Also queues async generation of the base data (tree structure + bounds).

◆ RequestLodMesh()

bool ezKrautGeneratorResource::RequestLodMesh ( ezKrautTreeResourceHandle  hTree,
ezUInt32  uiSeed,
ezUInt32  uiLodIndex,
bool  bImmediate 
) const

Requests that a specific LOD mesh be generated.

uiLodIndex 0 = full-detail LOD, 1..N = runtime LODs. When bImmediate is true, generation runs synchronously on the calling thread, which will block until the mesh is ready. Returns true if the LOD is already Ready.

◆ UnloadData()

ezResourceLoadDesc ezKrautGeneratorResource::UnloadData ( Unload  WhatToUnload)
overrideprivatevirtual

Requests the resource to unload another quality level. If bFullUnload is true, the resource should unload all data, because it is going to be deleted afterwards.

Implements ezResource.

◆ UpdateContent()

ezResourceLoadDesc ezKrautGeneratorResource::UpdateContent ( ezStreamReader pStream)
overrideprivatevirtual

Called whenever more data for the resource is available. The resource must read the stream to update it's data.

pStream may be nullptr in case the resource data could not be found.

Implements ezResource.

◆ UpdateMemoryUsage()

void ezKrautGeneratorResource::UpdateMemoryUsage ( MemoryUsage out_NewMemoryUsage)
overrideprivatevirtual

This function must be overridden by all resource types.

It has to compute the memory used by this resource. It is called by the resource manager whenever the resource's data has been loaded or unloaded.

Implements ezResource.


The documentation for this class was generated from the following files: