#include <ShadowMapManager.h>

Classes
struct	InternalResources

struct	ShadowMapHandleResources

Public Member Functions
	ShadowMapManager (const ShadowMapManager &)=delete

ShadowMapManager &	operator= (const ShadowMapManager &)=delete

	~ShadowMapManager ()

std::variant< std::unique_ptr< ShadowMapHandle >, Error >	createShadowMap (const std::string &sResourceName, ShadowMapType type, const std::function< void(unsigned int)> &onArrayIndexChanged)

std::pair< std::recursive_mutex, InternalResources > *	getInternalResources ()

Renderer *	getRenderer () const

Static Public Member Functions
static int	getShadowPassDepthBias ()

static float	getShadowPassDepthSlopeFactor ()

static constexpr const char *	getDirectionalShadowMapsShaderResourceName ()

static constexpr const char *	getSpotShadowMapsShaderResourceName ()

static constexpr const char *	getPointShadowMapsShaderResourceName ()

static constexpr float	getVisibleDistanceToNearClipPlaneRatio ()

static std::variant< std::unique_ptr< ShadowMapManager >, Error >	create (GpuResourceManager *pResourceManager)

Private Member Functions
	ShadowMapManager (GpuResourceManager *pResourceManager, std::array< std::unique_ptr< ShadowMapArrayIndexManager >, static_cast< size_t >(ShadowMapType::SIZE)> vShadowMapArrayIndexManagers)

std::optional< Error >	bindShadowMapsToPipeline (Pipeline *pPipeline)

std::optional< Error >	bindShadowMapsToAllPipelines ()

void	onShadowMapHandleBeingDestroyed (ShadowMapHandle *pHandleToResourceDestroy)

std::optional< Error >	recreateShadowMaps ()

unsigned int	correctShadowMapResolutionForType (unsigned int iRenderSettingsShadowMapSize, ShadowMapType type)

ShadowMapArrayIndexManager *	getArrayIndexManagerBasedOnShadowMapType (ShadowMapType type)

Private Attributes
std::pair< std::recursive_mutex, InternalResources >	mtxInternalResources

GpuResourceManager *	pResourceManager = nullptr

Static Private Attributes
static constexpr float	visibleDistanceToNearClipPlaneRatio = 0.004F

static constexpr auto	pDirectionalShadowMapsShaderResourceName = "directionalShadowMaps"

static constexpr auto	pSpotShadowMapsShaderResourceName = "spotShadowMaps"

static constexpr auto	pPointShadowMapsShaderResourceName = "pointShadowMaps"

Friends
class	ShadowMapHandle

class	Renderer

class	PipelineManager

Detailed Description

Stores all shadow maps.

Remarks: Although shadow maps are textures they are not managed by the texture manager because shadow maps are special (specific) textures and they need special treatment/management logic that texture manager should not care about.

Constructor & Destructor Documentation

◆ ~ShadowMapManager()

ne::ShadowMapManager::~ShadowMapManager ( )

Makes sure that no resource exists.

◆ ShadowMapManager()

ne::ShadowMapManager::ShadowMapManager	(	GpuResourceManager *	pResourceManager,
		std::array< std::unique_ptr< ShadowMapArrayIndexManager >, static_cast< size_t >(ShadowMapType::SIZE)>	vShadowMapArrayIndexManagers
	)

private

Initializes the manager.

Parameters

pResourceManager	Resource manager that owns this object.
vShadowMapArrayIndexManagers	Array index managers for various light source types

Member Function Documentation

◆ bindShadowMapsToAllPipelines()

std::optional< Error > ne::ShadowMapManager::bindShadowMapsToAllPipelines ( )

private

Goes through all graphics pipelines ad binds shadow maps to pipelines that use them.

Returns: Error if something went wrong.

◆ bindShadowMapsToPipeline()

std::optional< Error > ne::ShadowMapManager::bindShadowMapsToPipeline ( Pipeline * pPipeline )

private

Looks if the specified pipeline uses shadow maps and if uses binds shadow maps to the pipeline.

Parameters

pPipeline Pipeline to bind shadow maps to.

Returns: Error if something went wrong.

◆ correctShadowMapResolutionForType()

unsigned int ne::ShadowMapManager::correctShadowMapResolutionForType	(	unsigned int	iRenderSettingsShadowMapSize,
		ShadowMapType	type
	)

private

Returns shadow map texture size (in pixels) that should be used for the specified shadow map type. (the specified value might be corrected for the specified shadow map type).

Parameters

iRenderSettingsShadowMapSize	Shadow map size from render settings.
type	Shadow map size.

Returns: Shadow map size to use for this shadow map type.

◆ create()

std::variant< std::unique_ptr< ShadowMapManager >, Error > ne::ShadowMapManager::create ( GpuResourceManager * pResourceManager )

static

Creates a new shadow map manager.

Parameters

pResourceManager Resource manager that owns this object.

Returns: Error if something went wrong, otherwise created shadow map manager.

◆ createShadowMap()

std::variant< std::unique_ptr< ShadowMapHandle >, Error > ne::ShadowMapManager::createShadowMap	(	const std::string &	sResourceName,
		ShadowMapType	type,
		const std::function< void(unsigned int)> &	onArrayIndexChanged
	)

Creates a shadow map.

Parameters

sResourceName	Name of the GPU resource that will be created, used for logging.
type	Type of a shadow map to create depending on the light source type.
onArrayIndexChanged	Called after the index of the returned shadow map into the descriptor array of shadow maps was initialized/changed.

Returns: Error if something went wrong, otherwise created shadow map. Returning unique ptr although shadow map handle already behaves like unique ptr in order for the manager to be able to store raw pointers to handles without fearing that a raw pointer will point to invalid handle due to moveing the handle.

◆ getArrayIndexManagerBasedOnShadowMapType()

ShadowMapArrayIndexManager * ne::ShadowMapManager::getArrayIndexManagerBasedOnShadowMapType ( ShadowMapType type )

private

Returns pointer to one of the array index managers from mtxInternalResources depending on the specified shadow map type.

Warning: Do not delete (free) returned pointer.

Remarks: Expects that mtxInternalResources is locked.

Parameters

type	Type of the shadow map to determine the manager.

Returns: nullptr if specified not supported shadow map type, otherwise valid pointer.

◆ getDirectionalShadowMapsShaderResourceName()

static constexpr const char * ne::ShadowMapManager::getDirectionalShadowMapsShaderResourceName ( )

inlinestaticconstexpr

Returns name of the shader resource (from shader code) that stores all directional light shadow maps.

Returns: Shader resource name.

◆ getInternalResources()

std::pair< std::recursive_mutex, InternalResources > * ne::ShadowMapManager::getInternalResources ( )

inline

Returns internal resources of this manager.

Warning: Do not delete (free) returned pointer.

Returns: Internal resources.

◆ getPointShadowMapsShaderResourceName()

static constexpr const char * ne::ShadowMapManager::getPointShadowMapsShaderResourceName ( )

inlinestaticconstexpr

Returns name of the shader resource (from shader code) that stores all point light shadow maps.

Returns: Shader resource name.

◆ getRenderer()

Renderer * ne::ShadowMapManager::getRenderer ( ) const

Returns renderer.

Returns: Renderer.

◆ getShadowPassDepthBias()

int ne::ShadowMapManager::getShadowPassDepthBias ( )

static

Constant depth bias (offset) to apply when rendering depth to shadow maps to avoid an effect known as "shadow acne" (stair-stepping).

Returns: Constant depth bias.

◆ getShadowPassDepthSlopeFactor()

float ne::ShadowMapManager::getShadowPassDepthSlopeFactor ( )

static

Constant depth slope bias (multiplier) to apply when rendering depth to shadow maps to avoid an effect known as "shadow acne" (stair-stepping).

Returns: Constant depth slope factor.

◆ getSpotShadowMapsShaderResourceName()

static constexpr const char * ne::ShadowMapManager::getSpotShadowMapsShaderResourceName ( )

inlinestaticconstexpr

Returns name of the shader resource (from shader code) that stores all spot light shadow maps.

Returns: Shader resource name.

◆ getVisibleDistanceToNearClipPlaneRatio()

static constexpr float ne::ShadowMapManager::getVisibleDistanceToNearClipPlaneRatio ( )

inlinestaticconstexpr

Returns constant used to convert visible (non-clipped) distance to near clip plane for shadow mapping.

Returns: Far to near Z ratio.

◆ onShadowMapHandleBeingDestroyed()

void ne::ShadowMapManager::onShadowMapHandleBeingDestroyed ( ShadowMapHandle * pHandleToResourceDestroy )

private

Called by destructor of shadow map handle to notify the manager that a resource is no longer used.

Parameters

pHandleToResourceDestroy Handle to resource to destroy.

◆ recreateShadowMaps()

std::optional< Error > ne::ShadowMapManager::recreateShadowMaps ( )

private

Called by the renderer to notify the manager that shadow quality setting was changed and all shadow maps should now be re-created using the new shadow map resolution.

Returns: Error if something went wrong.

Member Data Documentation

◆ mtxInternalResources

std::pair<std::recursive_mutex, InternalResources> ne::ShadowMapManager::mtxInternalResources

private

Allocated shadow maps.

Remarks: Storing pairs of "raw pointer" - "unique pointer" to quickly find needed resources when need to destroy some resource given a raw pointer.; Storing raw pointers here is safe because shadow map handle will notify us before destroying the resource so we will remove the raw pointer and shadow map handle

◆ pDirectionalShadowMapsShaderResourceName

constexpr auto ne::ShadowMapManager::pDirectionalShadowMapsShaderResourceName = "directionalShadowMaps"

staticconstexprprivate

Name of the shader resource (from shader code) that stores all directional shadow maps.

◆ pPointShadowMapsShaderResourceName

constexpr auto ne::ShadowMapManager::pPointShadowMapsShaderResourceName = "pointShadowMaps"

staticconstexprprivate

Name of the shader resource (from shader code) that stores all point shadow maps.

◆ pResourceManager

GpuResourceManager* ne::ShadowMapManager::pResourceManager = nullptr

private

Do not delete (free) this pointer. GPU resource manager that owns this object.

◆ pSpotShadowMapsShaderResourceName

constexpr auto ne::ShadowMapManager::pSpotShadowMapsShaderResourceName = "spotShadowMaps"

staticconstexprprivate

Name of the shader resource (from shader code) that stores all spot shadow maps.

◆ visibleDistanceToNearClipPlaneRatio

constexpr float ne::ShadowMapManager::visibleDistanceToNearClipPlaneRatio = 0.004F

staticconstexprprivate

Constant used to convert visible (non-clipped) distance to near clip plane for shadow mapping.

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

src/engine_lib/private/render/general/resource/shadow/ShadowMapManager.h
src/engine_lib/private/render/general/resource/shadow/ShadowMapManager.cpp

Classes

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ ~ShadowMapManager()

◆ ShadowMapManager()

Member Function Documentation

◆ bindShadowMapsToAllPipelines()

◆ bindShadowMapsToPipeline()

◆ correctShadowMapResolutionForType()

◆ create()

◆ createShadowMap()

◆ getArrayIndexManagerBasedOnShadowMapType()

◆ getDirectionalShadowMapsShaderResourceName()

◆ getInternalResources()

◆ getPointShadowMapsShaderResourceName()

◆ getRenderer()

◆ getShadowPassDepthBias()

◆ getShadowPassDepthSlopeFactor()

◆ getSpotShadowMapsShaderResourceName()

◆ getVisibleDistanceToNearClipPlaneRatio()

◆ onShadowMapHandleBeingDestroyed()

◆ recreateShadowMaps()

Member Data Documentation

◆ mtxInternalResources

◆ pDirectionalShadowMapsShaderResourceName

◆ pPointShadowMapsShaderResourceName

◆ pResourceManager

◆ pSpotShadowMapsShaderResourceName

◆ visibleDistanceToNearClipPlaneRatio