#include <OgreResourceTransition.h>

Public Member Functions
void	assumeTransition (TextureGpu *texture, ResourceLayout::Layout newLayout, ResourceAccess::ResourceAccess access, uint8 stageMask)
	Tell the solver the texture has been transitioned to a different layout, externally. More...

void	assumeTransitions (ResourceStatusMap &resourceStatus)
	Tell the solver all these resources have been transitioned to a different layout, externally. More...

ResourceTransitionArray &	getNewResourceTransitionsArrayTmp ()
	Returns a temporary array variable that can be reused to avoid needless reallocations You're not forced to use it, but it will increase performance. More...

const ResourceStatusMap &	getResourceStatus ()

void	reset ()

void	resolveTransition (ResourceTransitionArray &resourceTransitions, GpuTrackedResource *bufferRes, ResourceAccess::ResourceAccess access, uint8 stageMask)
	Same as the other overload, but meant for buffers. More...

void	resolveTransition (ResourceTransitionArray &resourceTransitions, TextureGpu *texture, ResourceLayout::Layout newLayout, ResourceAccess::ResourceAccess access, uint8 stageMask)
	By specifying how a texture will be used next, this function figures out the necessary barriers that may be required and outputs to resourceTransitions while storing the current state in mResourceStatus so the next calls to resolveTransition know what was the last usage. More...

void	textureDeleted (TextureGpu *texture)
	Similar to our notifyTextureChanged overload, to delete what is in mResourceStatus. More...

Member Function Documentation

◆ assumeTransition()

void Ogre::BarrierSolver::assumeTransition	(	TextureGpu *	texture,
		ResourceLayout::Layout	newLayout,
		ResourceAccess::ResourceAccess	access,
		uint8	stageMask
	)

Tell the solver the texture has been transitioned to a different layout, externally.

Parameters

texture	See resolveTransition().
newLayout	See resolveTransition().
access	See resolveTransition().
stageMask	See resolveTransition().

◆ assumeTransitions()

void Ogre::BarrierSolver::assumeTransitions ( ResourceStatusMap & resourceStatus )

Tell the solver all these resources have been transitioned to a different layout, externally.

◆ getNewResourceTransitionsArrayTmp()

ResourceTransitionArray& Ogre::BarrierSolver::getNewResourceTransitionsArrayTmp ( )

inline

Returns a temporary array variable that can be reused to avoid needless reallocations You're not forced to use it, but it will increase performance.

Beware not to have it in use in two places at the same time! Use it as soon as possible

References Ogre::FastArray< T >::clear().

◆ getResourceStatus()

const ResourceStatusMap& Ogre::BarrierSolver::getResourceStatus ( )

◆ reset()

void Ogre::BarrierSolver::reset ( )

◆ resolveTransition() [1/2]

void Ogre::BarrierSolver::resolveTransition	(	ResourceTransitionArray &	resourceTransitions,
		GpuTrackedResource *	bufferRes,
		ResourceAccess::ResourceAccess	access,
		uint8	stageMask
	)

Same as the other overload, but meant for buffers.

◆ resolveTransition() [2/2]

void Ogre::BarrierSolver::resolveTransition	(	ResourceTransitionArray &	resourceTransitions,
		TextureGpu *	texture,
		ResourceLayout::Layout	newLayout,
		ResourceAccess::ResourceAccess	access,
		uint8	stageMask
	)

By specifying how a texture will be used next, this function figures out the necessary barriers that may be required and outputs to resourceTransitions while storing the current state in mResourceStatus so the next calls to resolveTransition know what was the last usage.

Parameters

resourceTransitions	[in/out] Barriers created so far that will be executed as a single sync point. This variable may or may not be modified depending of whether a barrier is needed
texture	The texture you want to use
newLayout	How the texture will be used next
access	The kind of access: Read, Write, R/W.
stageMask	Bitmask of the shader stages that will be using this texture after this transition. Only useful when transitioning to ResourceLayout::Texture and ResourceLayout::Uav. Must be 0 otherwise.

◆ textureDeleted()

void Ogre::BarrierSolver::textureDeleted ( TextureGpu * texture )

Similar to our notifyTextureChanged overload, to delete what is in mResourceStatus.

However:

mCopyStateTextures needs a O(N) search. It is rare for us to put textures there so we use texture->addListener() and notifyTextureChanged to get notified when a texture living in mCopyStateTextures needs to be searched and removed
mResourceStatus is an std::map, and many textures can end up there so it could be rather inefficient to call addListener / removeListener frequently Just searching in mResourceStatus should be quite fast. Thus TextureGpuManager will call this function for all textures

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

OgreResourceTransition.h

Public Member Functions