#include <Renderer.h>

Inheritance diagram for ne::Renderer:

Classes
struct	LightsInFrustum

struct	MeshesInFrustum

Public Member Functions
	Renderer (const Renderer &)=delete

Renderer &	operator= (const Renderer &)=delete

virtual std::vector< std::string >	getSupportedGpuNames () const =0

virtual std::variant< std::set< std::pair< unsigned int, unsigned int > >, Error >	getSupportedRenderResolutions () const =0

virtual std::variant< std::set< std::pair< unsigned int, unsigned int > >, Error >	getSupportedRefreshRates () const =0

virtual RendererType	getType () const =0

virtual std::string	getUsedApiVersion () const =0

std::pair< std::recursive_mutex , RenderSettings >	getRenderSettings ()

RenderStatistics *	getRenderStatistics ()

virtual std::string	getCurrentlyUsedGpuName () const =0

size_t	getTotalVideoMemoryInMb () const

size_t	getUsedVideoMemoryInMb () const

virtual void	waitForGpuToFinishWorkUpToThisPoint ()=0

virtual std::pair< unsigned int, unsigned int >	getRenderTargetSize () const =0

Window *	getWindow () const

GameManager *	getGameManager () const

ShaderManager *	getShaderManager () const

PipelineManager *	getPipelineManager () const

GpuResourceManager *	getResourceManager () const

FrameResourceManager *	getFrameResourceManager () const

ShaderCpuWriteResourceBindingManager *	getShaderCpuWriteResourceManager () const

ShaderTextureResourceBindingManager *	getShaderTextureResourceManager () const

LightingShaderResourceManager *	getLightingShaderResourceManager () const

GlobalShaderResourceBindingManager *	getGlobalShaderResourceBindingManager () const

std::recursive_mutex *	getRenderResourcesMutex ()

virtual GpuResource *	getDepthTextureNoMultisampling ()=0

Static Public Member Functions
static constexpr float	getMinDepth ()

static constexpr float	getMaxDepth ()

static std::variant< std::unique_ptr< Renderer >, Error >	create (GameManager *pGameManager, std::optional< RendererType > preferredRenderer)

Protected Member Functions
	Renderer (GameManager *pGameManager)

std::optional< Error >	compileEngineShaders () const

void	updateFrameConstantsBuffer (FrameResource pCurrentFrameResource, CameraProperties pCameraProperties)

void	resetGpuResourceManager ()

void	resetPipelineManager ()

void	resetFrameResourceManager ()

void	resetLightingShaderResourceManager ()

virtual std::variant< std::optional< AntialiasingQuality >, Error >	getMaxSupportedAntialiasingQuality () const =0

void	onFramebufferSizeChanged (int iWidth, int iHeight)

virtual void	onFramebufferSizeChangedDerived (int iWidth, int iHeight)

void	drawNextFrame ()

virtual void	prepareRenderTargetForNextFrame ()

virtual void	prepareForDrawingNextFrame (CameraProperties pCameraProperties, FrameResource pCurrentFrameResource)=0

virtual void	drawShadowMappingPass (FrameResource pCurrentFrameResource, size_t iCurrentFrameResourceIndex, GraphicsPipelineRegistry pGraphicsPipelines)=0

virtual void	drawMeshesDepthPrepass (FrameResource *pCurrentFrameResource, size_t iCurrentFrameResourceIndex, const std::vector< Renderer::MeshesInFrustum::PipelineInFrustumInfo > &vOpaquePipelines)=0

virtual void	executeComputeShadersOnGraphicsQueue (FrameResource *pCurrentFrameResource, size_t iCurrentFrameResourceIndex, ComputeExecutionStage stage)=0

virtual void	drawMeshesMainPass (FrameResource *pCurrentFrameResource, size_t iCurrentFrameResourceIndex, const std::vector< Renderer::MeshesInFrustum::PipelineInFrustumInfo > &vOpaquePipelines, const std::vector< Renderer::MeshesInFrustum::PipelineInFrustumInfo > &vTransparentPipelines)=0

virtual void	present (FrameResource *pCurrentFrameResource, size_t iCurrentFrameResourceIndex)=0

std::optional< Error >	onRenderSettingsChanged (bool bShadowMapSizeChanged=false)

virtual std::optional< Error >	onRenderSettingsChangedDerived ()=0

virtual void	waitForGpuToFinishUsingFrameResource (FrameResource *pFrameResource)=0

virtual bool	isInitialized () const =0

std::optional< Error >	initializeRenderer ()

std::optional< Error >	initializeResourceManagers ()

std::optional< Error >	clampSettingsToMaxSupported ()

std::optional< Error >	recalculateLightTileFrustums ()

MeshesInFrustum *	getMeshesInCameraFrustum (CameraProperties pActiveCameraProperties, GraphicsPipelineRegistry pGraphicsPipelines)

void	cullLightsOutsideCameraFrustum (CameraProperties *pActiveCameraProperties, size_t iCurrentFrameResourceIndex)

std::pair< std::mutex, FrameConstants > *	getFrameConstants ()

std::atomic< size_t > *	getDrawCallCounter ()

Static Protected Member Functions
static consteval unsigned int	getRecommendedSwapChainBufferCount ()

static void	getDirectionalLightNodeShadowMappingInfo (DirectionalLightNode pNode, ShadowMapHandle &pShadowMapHandle, unsigned int &iShadowPassLightInfoArrayIndex)

static void	getSpotlightNodeShadowMappingInfo (SpotlightNode pNode, ShadowMapHandle &pShadowMapHandle, unsigned int &iShadowPassLightInfoArrayIndex)

static unsigned int	getPointLightShadowPassLightInfoArrayIndex (PointLightNode *pNode, size_t iCubemapFaceIndex)

static ShadowMapHandle *	getPointLightNodeShadowMapHandle (PointLightNode *pNode)

Private Member Functions
void	calculateFrameStatistics ()

void	updateResourcesForNextFrame (unsigned int iRenderTargetWidth, unsigned int iRenderTargetHeight, CameraProperties *pCameraProperties)

void	onActiveCameraChanged ()

void	recalculateTargetFrameTimeFromFpsLimitSetting ()

void	setupRenderStats ()

std::optional< Error >	initializeRenderSettings ()

Static Private Member Functions
static std::unique_ptr< Renderer >	createRenderer (GameManager *pGameManager, std::optional< RendererType > preferredRenderer)

static std::variant< std::unique_ptr< Renderer >, std::pair< Error, std::string > >	createRenderer (RendererType type, GameManager *pGameManager, const std::vector< std::string > &vBlacklistedGpuNames)

Private Attributes
std::recursive_mutex	mtxRwRenderResources

std::unique_ptr< GpuResourceManager >	pResourceManager

std::unique_ptr< ShaderManager >	pShaderManager

std::unique_ptr< PipelineManager >	pPipelineManager

std::unique_ptr< FrameResourceManager >	pFrameResourceManager

std::unique_ptr< ShaderCpuWriteResourceBindingManager >	pShaderCpuWriteResourceManager

std::unique_ptr< ShaderTextureResourceBindingManager >	pShaderTextureResourceManager

std::unique_ptr< LightingShaderResourceManager >	pLightingShaderResourceManager

std::unique_ptr< GlobalShaderResourceBindingManager >	pGlobalShaderResourceBindingManager

std::pair< std::recursive_mutex, std::unique_ptr< RenderSettings > >	mtxRenderSettings

MeshesInFrustum	meshesInFrustumLastFrame

bool	bIsWindowMinimized = false

std::pair< std::mutex, EnvironmentNode * >	mtxSpawnedEnvironmentNode

std::pair< std::mutex, FrameConstants >	mtxFrameConstants

RenderStatistics	renderStats

GameManager *	pGameManager = nullptr

Static Private Attributes
static constexpr unsigned int	iRecommendedSwapChainBufferCount = 2

static constexpr float	minDepth = 0.0F

static constexpr float	maxDepth = 1.0F

Friends
class	Window

class	RenderSettings

class	EnvironmentNode

class	CameraManager

Detailed Description

Defines a base class for renderers to implement.

Constructor & Destructor Documentation

◆ Renderer()

ne::Renderer::Renderer ( GameManager * pGameManager )

protected

Constructor.

Parameters

pGameManager pGameManager object that owns this renderer.

Member Function Documentation

◆ calculateFrameStatistics()

void ne::Renderer::calculateFrameStatistics ( )

private

Calculates some frame-related statistics.

Remarks: Must be called after a frame is finished drawing.

◆ clampSettingsToMaxSupported()

std::optional< Error > ne::Renderer::clampSettingsToMaxSupported ( )

protected

Called by derived class after they have created essential API objects (D3D device / Vulkan physical device) so that RenderSettings can query maximum supported settings and clamp the current values (if needed).

Warning: Must be called by derived classes after they have created essential API objects (D3D device / Vulkan physical device).

Returns: Error if something went wrong.

◆ compileEngineShaders()

std::optional< Error > ne::Renderer::compileEngineShaders ( ) const

protected

Compiles/verifies all essential shaders that the engine will use.

Remarks: This is the last step in renderer initialization that is executed after the renderer was tested to support the hardware.

Returns: Error if something went wrong.

◆ create()

std::variant< std::unique_ptr< Renderer >, Error > ne::Renderer::create	(	GameManager *	pGameManager,
		std::optional< RendererType >	preferredRenderer
	)

static

Creates a new renderer.

Parameters

pGameManager	Game manager object that will own this renderer.
preferredRenderer	Preferred renderer to be used.

Returns: Error if no renderer could be created, otherwise created renderer.

◆ createRenderer() [1/2]

std::unique_ptr< Renderer > ne::Renderer::createRenderer	(	GameManager *	pGameManager,
		std::optional< RendererType >	preferredRenderer
	)

staticprivate

Creates a new renderer and nothing else.

This function is only used to pick a renderer including the specified preference without doing any renderer finalization.

Parameters

pGameManager	Game manager object that will own this renderer.
preferredRenderer	Renderer to prefer to create.

Returns: nullptr if no renderer could be created, otherwise created renderer.

◆ createRenderer() [2/2]

std::variant< std::unique_ptr< Renderer >, std::pair< Error, std::string > > ne::Renderer::createRenderer	(	RendererType	type,
		GameManager *	pGameManager,
		const std::vector< std::string > &	vBlacklistedGpuNames
	)

staticprivate

Attempts to create a renderer of the specified type.

This function is only used to pick a renderer including the specified preference without doing any renderer finalization.

Parameters

type	Type of the renderer to create.
pGameManager	Game manager object that will own this renderer.
vBlacklistedGpuNames	Names of GPUs that should not be used, generally this means that these GPUs were previously used to create the renderer but something went wrong.

Returns: Created renderer if successful, otherwise multiple values in a pair: error and a name of the GPU that the renderer tried to use (can be empty if failed before picking a GPU or if all supported GPUs are blacklisted).

◆ cullLightsOutsideCameraFrustum()

void ne::Renderer::cullLightsOutsideCameraFrustum	(	CameraProperties *	pActiveCameraProperties,
		size_t	iCurrentFrameResourceIndex
	)

protected

Culls all light nodes that are outside of active camera's frustum so that they will not be processed during the next submitted frame.

Parameters

pActiveCameraProperties	Properties of the currently active camera.
iCurrentFrameResourceIndex	Index of the frame resource that will be used to submit the next frame.

◆ drawMeshesDepthPrepass()

virtual void ne::Renderer::drawMeshesDepthPrepass	(	FrameResource *	pCurrentFrameResource,
		size_t	iCurrentFrameResourceIndex,
		const std::vector< Renderer::MeshesInFrustum::PipelineInFrustumInfo > &	vOpaquePipelines
	)

protectedpure virtual

Submits commands to draw meshes and the specified depth only (vertex shader only) pipelines.

Parameters

pCurrentFrameResource	Frame resource of the frame being submitted.
iCurrentFrameResourceIndex	Index of the current frame resource.
vOpaquePipelines	Opaque pipelines (depth pipeline will be retrieved from them).

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

◆ drawMeshesMainPass()

virtual void ne::Renderer::drawMeshesMainPass	(	FrameResource *	pCurrentFrameResource,
		size_t	iCurrentFrameResourceIndex,
		const std::vector< Renderer::MeshesInFrustum::PipelineInFrustumInfo > &	vOpaquePipelines,
		const std::vector< Renderer::MeshesInFrustum::PipelineInFrustumInfo > &	vTransparentPipelines
	)

protectedpure virtual

Submits commands to draw meshes for main (color) pass.

Parameters

pCurrentFrameResource	Frame resource of the frame being submitted.
iCurrentFrameResourceIndex	Index of the current frame resource.
vOpaquePipelines	Opaque pipelines to draw.
vTransparentPipelines	Transparent pipelines to draw.

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

◆ drawNextFrame()

void ne::Renderer::drawNextFrame ( )

protected

Submits a new frame to the GPU.

◆ drawShadowMappingPass()

virtual void ne::Renderer::drawShadowMappingPass	(	FrameResource *	pCurrentFrameResource,
		size_t	iCurrentFrameResourceIndex,
		GraphicsPipelineRegistry *	pGraphicsPipelines
	)

protectedpure virtual

Submits commands to draw world from the perspective of all spawned light sources to capture shadow maps.

Warning: Expects to be called after cullLightsOutsideCameraFrustum to capture shadow maps only for lights in frustum.

Parameters

pCurrentFrameResource	Frame resource of the frame being submitted.
iCurrentFrameResourceIndex	Index of the current frame resource.
pGraphicsPipelines	Graphics pipelines to draw.

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

◆ executeComputeShadersOnGraphicsQueue()

virtual void ne::Renderer::executeComputeShadersOnGraphicsQueue	(	FrameResource *	pCurrentFrameResource,
		size_t	iCurrentFrameResourceIndex,
		ComputeExecutionStage	stage
	)

protectedpure virtual

Executes compute shaders of the specified stage.

Warning: Expects that mutex for compute shaders is locked.

Parameters

pCurrentFrameResource	Frame resource of the frame being submitted.
iCurrentFrameResourceIndex	Index of the current frame resource.
stage	Stage of compute shaders to execute.

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

◆ getCurrentlyUsedGpuName()

virtual std::string ne::Renderer::getCurrentlyUsedGpuName ( ) const

pure virtual

Returns the name of the GPU that is being currently used.

Returns: Name of the GPU.

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

◆ getDepthTextureNoMultisampling()

virtual GpuResource * ne::Renderer::getDepthTextureNoMultisampling ( )

pure virtual

Returns pointer to the texture resource that represents renderer's depth texture without multisampling (resolved resource).

Warning: If MSAA is enabled this function will return one resource (pointer to a separate depth resolved resource), if it's disabled it will return the other resource (pointer to depth texture). So it may be a good idea to query this pointer every time you need it instead of saving it and reusing it because every frame this pointer may change (due to other reasons such as render target resize and etc).; Please note that it's only safe to call this function inside of the drawNextFrame function (because returned pointer will not be changed during this function), if you need to use depth texture in your game code create an issue and I will add a GameInstance callback that will be called each frame inside of the drawNextFrame so you can use this function.

Returns: Pointer to depth texture.

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

◆ getDirectionalLightNodeShadowMappingInfo()

void ne::Renderer::getDirectionalLightNodeShadowMappingInfo	(	DirectionalLightNode *	pNode,
		ShadowMapHandle *&	pShadowMapHandle,
		unsigned int &	iShadowPassLightInfoArrayIndex
	)

staticprotected

Returns information needed to capture/update a shadow map for a specific node.

Parameters

pNode	Directional light to update its shadow map.
pShadowMapHandle	Shadow map handle of the specified light.
iShadowPassLightInfoArrayIndex	Index into the array of shadow pass light infos.

◆ getDrawCallCounter()

std::atomic< size_t > * ne::Renderer::getDrawCallCounter ( )

inlineprotected

Returns counter for draw calls.

Remarks: Must be used by derived classes to increment draw call counter.; Automatically resets in calculateFrameStatistics.

Returns: Draw call counter.

◆ getFrameConstants()

std::pair< std::mutex, FrameConstants > * ne::Renderer::getFrameConstants ( )

inlineprotected

Returns frame constants.

Returns: Frame constants.

◆ getFrameResourceManager()

FrameResourceManager * ne::Renderer::getFrameResourceManager ( ) const

Returns frame resource manager.

Warning: Do not delete (free) returned pointer.

Returns: Frame resources manager.

◆ getGameManager()

GameManager * ne::Renderer::getGameManager ( ) const

Game manager object that owns this renderer.

Warning: Do not delete (free) returned pointer.

Returns: Game manager object.

◆ getGlobalShaderResourceBindingManager()

GlobalShaderResourceBindingManager * ne::Renderer::getGlobalShaderResourceBindingManager ( ) const

Returns manager responsible for creating global shader resource bindings.

Warning: Do not delete (free) returned pointer.

Returns: Manager.

◆ getLightingShaderResourceManager()

LightingShaderResourceManager * ne::Renderer::getLightingShaderResourceManager ( ) const

Returns manager that controls GPU resources of lighting shader resources.

Warning: Do not delete (free) returned pointer.

Returns: Manager.

◆ getMaxDepth()

static constexpr float ne::Renderer::getMaxDepth ( )

inlinestaticconstexpr

Returns the maximum value for depth.

Returns: Maximum depth value.

◆ getMaxSupportedAntialiasingQuality()

virtual std::variant< std::optional< AntialiasingQuality >, Error > ne::Renderer::getMaxSupportedAntialiasingQuality ( ) const

protectedpure virtual

Returns the maximum anti-aliasing quality that can be used on the picked GPU (getCurrentlyUsedGpuName).

Remarks: Note that the maximum supported AA quality can differ depending on the used GPU/renderer.

Returns: Error if something went wrong, otherwise empty if AA is not supported.

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

◆ getMeshesInCameraFrustum()

Renderer::MeshesInFrustum * ne::Renderer::getMeshesInCameraFrustum	(	CameraProperties *	pActiveCameraProperties,
		GraphicsPipelineRegistry *	pGraphicsPipelines
	)

protected

Iterates over all meshes and returns only meshes inside of the camera's frustum (and their pipelines).

Warning: Do not delete (free) returned pointer.

Remarks: This function is expected to be called only once per frame.

Parameters

pActiveCameraProperties	Properties of the currently active camera.
pGraphicsPipelines	Graphics pipelines.

Returns: Pipelines, material and meshes inside camera's frustum.

◆ getMinDepth()

static constexpr float ne::Renderer::getMinDepth ( )

inlinestaticconstexpr

Returns the minimum value for depth.

Returns: Minimum depth value.

◆ getPipelineManager()

PipelineManager * ne::Renderer::getPipelineManager ( ) const

Returns pipeline manager used to store graphics and compute pipelines.

Warning: Do not delete (free) returned pointer.

Returns: Pipeline manager.

◆ getPointLightNodeShadowMapHandle()

ShadowMapHandle * ne::Renderer::getPointLightNodeShadowMapHandle ( PointLightNode * pNode )

staticprotected

Returns shadow map handle of the specified point light node.

Parameters

pNode Point light node.

Returns: Shadow map handle.

◆ getPointLightShadowPassLightInfoArrayIndex()

unsigned int ne::Renderer::getPointLightShadowPassLightInfoArrayIndex	(	PointLightNode *	pNode,
		size_t	iCubemapFaceIndex
	)

staticprotected

Returns information needed to capture/update a shadow map for a specific node.

Parameters

pNode	Point light to update its shadow map.
iCubemapFaceIndex	Index of the cubemap to get matrix index.

Returns: Index into the array of shadow pass light infos.

◆ getRecommendedSwapChainBufferCount()

static consteval unsigned int ne::Renderer::getRecommendedSwapChainBufferCount ( )

inlinestaticprotected

Returns the number of swap chain buffers/images that we prefer to use.

Remarks: Frame resources expect that the number of swap chain images is equal to the number of frame resources because frame resources store synchronization objects such as fences and semaphores that expect one swap chain image per frame resource. If your renderer wants to use other number swap chain images you would might to implement a custom logic that will make sure everything is synchronized. For example, if you want to have less swap chain images than there is frame resources then you will need to store something like a pair of "swap chain image" - "frame resource" and each frame check if some swap chain image is used by some frame resource or not and wait if it's being used.

Returns: The recommended number of swap chain buffers/images that will work without any additional logic.

◆ getRenderResourcesMutex()

std::recursive_mutex * ne::Renderer::getRenderResourcesMutex ( )

Returns mutex that is used when reading or writing to GPU resources that may be used by the GPU.

Remarks: This mutex is generally locked when the renderer is submitting a new frame.; Usually after locking this mutex you would use waitForGpuToFinishWorkUpToThisPoint before actually starting to write/modify GPU resources.; Do not delete (free) returned pointer.

Returns: Mutex.

◆ getRenderSettings()

std::pair< std::recursive_mutex *, RenderSettings * > ne::Renderer::getRenderSettings ( )

Returns render settings that can be configured.

Remarks: Do not delete (free) returned pointer.

Returns: Non-owning pointer to render settings.

◆ getRenderStatistics()

RenderStatistics * ne::Renderer::getRenderStatistics ( )

Returns various statistics about rendering (such as FPS).

Remarks: Do not delete (free) returned pointer.

Returns: Statistics.

◆ getRenderTargetSize()

virtual std::pair< unsigned int, unsigned int > ne::Renderer::getRenderTargetSize ( ) const

pure virtual

Returns size of the render target (size of the underlying render image).

Returns: Render image size in pixels (width and height).

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

◆ getResourceManager()

GpuResourceManager * ne::Renderer::getResourceManager ( ) const

Returns GPU resource manager.

Warning: Do not delete (free) returned pointer.

Returns: GPU resource manager.

◆ getShaderCpuWriteResourceManager()

ShaderCpuWriteResourceBindingManager * ne::Renderer::getShaderCpuWriteResourceManager ( ) const

Returns manager of shader resources with CPU write access.

Warning: Do not delete (free) returned pointer.

Returns: Manager.

◆ getShaderManager()

ShaderManager * ne::Renderer::getShaderManager ( ) const

Returns shader manager used to compile shaders.

Warning: Do not delete (free) returned pointer.

Returns: Shader manager.

◆ getShaderTextureResourceManager()

ShaderTextureResourceBindingManager * ne::Renderer::getShaderTextureResourceManager ( ) const

Returns manager of shader resources that reference textures.

Warning: Do not delete (free) returned pointer.

Returns: Manager.

◆ getSpotlightNodeShadowMappingInfo()

void ne::Renderer::getSpotlightNodeShadowMappingInfo	(	SpotlightNode *	pNode,
		ShadowMapHandle *&	pShadowMapHandle,
		unsigned int &	iShadowPassLightInfoArrayIndex
	)

staticprotected

Returns information needed to capture/update a shadow map for a specific node.

Parameters

pNode	Spotlight to update its shadow map.
pShadowMapHandle	Shadow map handle of the specified light.
iShadowPassLightInfoArrayIndex	Index into the array of shadow pass light infos.

◆ getSupportedGpuNames()

virtual std::vector< std::string > ne::Renderer::getSupportedGpuNames ( ) const

pure virtual

Looks for video adapters (GPUs) that support this renderer.

Remarks: Note that returned array might differ depending on the used renderer.

Returns: Empty array if no GPU supports used renderer, otherwise array with GPU names that can be used for this renderer.

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

◆ getSupportedRefreshRates()

virtual std::variant< std::set< std::pair< unsigned int, unsigned int > >, Error > ne::Renderer::getSupportedRefreshRates ( ) const

pure virtual

Returns a list of supported screen refresh rates (pairs of numerator and denominator).

Remarks: The list of supported refresh rates depends on the currently used GPU, so if changing used GPU this list might return different values.

Returns: Error if something went wrong, otherwise refresh rates.

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

◆ getSupportedRenderResolutions()

virtual std::variant< std::set< std::pair< unsigned int, unsigned int > >, Error > ne::Renderer::getSupportedRenderResolutions ( ) const

pure virtual

Returns a list of supported render resolution (pairs of width and height).

Returns: Error if something went wrong, otherwise render resolutions.

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

◆ getTotalVideoMemoryInMb()

size_t ne::Renderer::getTotalVideoMemoryInMb ( ) const

Returns total video memory (VRAM) size in megabytes.

Remarks: If integrated GPU is used this function might return shared video memory (includes both dedicated VRAM and system RAM).

Returns: Total video memory size in megabytes.

◆ getType()

virtual RendererType ne::Renderer::getType ( ) const

pure virtual

Returns renderer's type.

Returns: Renderer's type.

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

◆ getUsedApiVersion()

virtual std::string ne::Renderer::getUsedApiVersion ( ) const

pure virtual

Returns API version or a feature level that the renderer uses.

For example DirectX renderer will return used feature level and Vulkan renderer will return used Vulkan API version.

Returns: Used API version.

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

◆ getUsedVideoMemoryInMb()

size_t ne::Renderer::getUsedVideoMemoryInMb ( ) const

Returns the amount of video memory (VRAM) that is currently being used by the renderer.

Remarks: Does not return global (system-wide) used VRAM size, only VRAM used by the renderer (i.e. only VRAM used by this application).

Returns: Size of the video memory used by the renderer in megabytes.

◆ getWindow()

Window * ne::Renderer::getWindow ( ) const

Returns the window that we render to.

Warning: Do not delete (free) returned pointer.

Returns: Window we render to.

◆ initializeRenderer()

std::optional< Error > ne::Renderer::initializeRenderer ( )

protected

Initializes some essential parts of the renderer (such as RenderSettings).

Warning: Must be called by derived classes in the beginning of their initialization.

Returns: Error if something went wrong.

◆ initializeRenderSettings()

std::optional< Error > ne::Renderer::initializeRenderSettings ( )

private

Initializes mtxRenderSettings.

Returns: Error if something went wrong.

◆ initializeResourceManagers()

std::optional< Error > ne::Renderer::initializeResourceManagers ( )

protected

Initializes various resource managers.

Warning: Must be called by derived classes after base initialization (for ex. in DirectX after device and video adapter were created).

Returns: Error if something went wrong.

◆ isInitialized()

virtual bool ne::Renderer::isInitialized ( ) const

protectedpure virtual

Tells whether the renderer is initialized or not.

Initialized renderer means that the hardware supports it and it's safe to use renderer functionality such as onRenderSettingsChanged.

Returns: Whether the renderer is initialized or not.

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

◆ onActiveCameraChanged()

void ne::Renderer::onActiveCameraChanged ( )

private

Called by camera manager after active camera was changed.

◆ onFramebufferSizeChanged()

void ne::Renderer::onFramebufferSizeChanged	(	int	iWidth,
		int	iHeight
	)

protected

Called when the framebuffer size was changed.

Parameters

iWidth	New width of the framebuffer (in pixels).
iHeight	New height of the framebuffer (in pixels).

◆ onFramebufferSizeChangedDerived()

virtual void ne::Renderer::onFramebufferSizeChangedDerived	(	int	iWidth,
		int	iHeight
	)

inlineprotectedvirtual

Called when the framebuffer size was changed.

Parameters

iWidth	New width of the framebuffer (in pixels).
iHeight	New height of the framebuffer (in pixels).

Reimplemented in ne::VulkanRenderer.

◆ onRenderSettingsChanged()

std::optional< Error > ne::Renderer::onRenderSettingsChanged ( bool bShadowMapSizeChanged = false )

protected

Called after some render setting is changed to recreate internal resources to match the current settings.

Parameters

bShadowMapSizeChanged true if shadow map size was changed, false otherwise.

Returns: Error if something went wrong.

◆ onRenderSettingsChangedDerived()

virtual std::optional< Error > ne::Renderer::onRenderSettingsChangedDerived ( )

protectedpure virtual

Called from onRenderSettingsChanged after some render setting is changed to recreate internal resources to match the current settings.

Returns: Error if something went wrong.

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

◆ prepareForDrawingNextFrame()

virtual void ne::Renderer::prepareForDrawingNextFrame	(	CameraProperties *	pCameraProperties,
		FrameResource *	pCurrentFrameResource
	)

protectedpure virtual

Setups everything for render commands to be recorded (resets command buffers and etc.).

Warning: Expects that render resources mutex is locked.

Remarks: When this function is called this means that the current frame resource is no longer used by the GPU.

Parameters

pCameraProperties	Camera properties to use.
pCurrentFrameResource	Frame resource of the frame being submitted.

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

◆ prepareRenderTargetForNextFrame()

virtual void ne::Renderer::prepareRenderTargetForNextFrame ( )

inlineprotectedvirtual

Called before prepareForDrawingNextFrame to do early frame preparations.

Remarks: It's expected that render target's size will not change after this function is finished and before a new frame is submitted.

Reimplemented in ne::VulkanRenderer.

◆ present()

virtual void ne::Renderer::present	(	FrameResource *	pCurrentFrameResource,
		size_t	iCurrentFrameResourceIndex
	)

protectedpure virtual

Does the final frame rendering logic to present the frame on the screen.

Parameters

pCurrentFrameResource	Frame resource of the frame being submitted.
iCurrentFrameResourceIndex	Index of the current frame resource.

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

◆ recalculateLightTileFrustums()

std::optional< Error > ne::Renderer::recalculateLightTileFrustums ( )

protected

Notifies pLightingShaderResourceManager to recalculate grid of frustums for light culling process.

Returns: Error if something went wrong.

◆ recalculateTargetFrameTimeFromFpsLimitSetting()

void ne::Renderer::recalculateTargetFrameTimeFromFpsLimitSetting ( )

private

Looks for FPS limit setting in RenderSettings and updates renderer's target time to render a frame.

◆ resetFrameResourceManager()

void ne::Renderer::resetFrameResourceManager ( )

protected

Sets nullptr to frame resource manager's unique ptr to force destroy it (if exists).

Warning: Avoid using this function. Only use it if you need a special destruction order in your renderer.

◆ resetGpuResourceManager()

void ne::Renderer::resetGpuResourceManager ( )

protected

Sets nullptr to resource manager's unique ptr to force destroy it (if exists).

Warning: Avoid using this function. Only use it if you need a special destruction order in your renderer.

◆ resetLightingShaderResourceManager()

void ne::Renderer::resetLightingShaderResourceManager ( )

protected

Sets nullptr to lighting shader resource manager's unique ptr to force destroy it (if exists).

Warning: Avoid using this function. Only use it if you need a special destruction order in your renderer.

◆ resetPipelineManager()

void ne::Renderer::resetPipelineManager ( )

protected

Sets nullptr to pipeline manager's unique ptr to force destroy it (if exists).

Warning: Avoid using this function. Only use it if you need a special destruction order in your renderer.

◆ setupRenderStats()

void ne::Renderer::setupRenderStats ( )

private

Initializes renderStats to be used.

◆ updateFrameConstantsBuffer()

void ne::Renderer::updateFrameConstantsBuffer	(	FrameResource *	pCurrentFrameResource,
		CameraProperties *	pCameraProperties
	)

protected

Takes the current frame resource and updates frame data constant buffer that it stores (by copying new (up to date) constants to it).

Remarks: Expected to be called by derived renderers only when they know that frame resources are not being used by the GPU.

Parameters

pCurrentFrameResource	Current frame resource.
pCameraProperties	Camera properties to use.

◆ updateResourcesForNextFrame()

void ne::Renderer::updateResourcesForNextFrame	(	unsigned int	iRenderTargetWidth,
		unsigned int	iRenderTargetHeight,
		CameraProperties *	pCameraProperties
	)

private

Updates internal resources (frame constants, shader resources, camera's aspect ratio and etc.) for the next frame.

Remarks: Waits before frame resource for the new frame will not be used by the GPU so it's safe to work with frame resource after calling this function.

Parameters

iRenderTargetWidth	Width (in pixels) of the image that will be used for the next frame.
iRenderTargetHeight	Height (in pixels) of the image that will be used for the next frame.
pCameraProperties	Camera properties to use.

◆ waitForGpuToFinishUsingFrameResource()

virtual void ne::Renderer::waitForGpuToFinishUsingFrameResource ( FrameResource * pFrameResource )

protectedpure virtual

Blocks the current thread until the GPU is finished using the specified frame resource.

Remarks: Generally the current frame resource will be passed and so the current frame resource mutex will be locked at the time of calling and until the function is not finished it will not be unlocked.

Parameters

pFrameResource Frame resource to wait for.

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

◆ waitForGpuToFinishWorkUpToThisPoint()

virtual void ne::Renderer::waitForGpuToFinishWorkUpToThisPoint ( )

pure virtual

Blocks the current thread until the GPU finishes executing all queued graphics commands up to this point.

Remarks: Typically used while getRenderResourcesMutex is locked.

Implemented in ne::DirectXRenderer, and ne::VulkanRenderer.

Member Data Documentation

◆ bIsWindowMinimized

bool ne::Renderer::bIsWindowMinimized = false

private

true if framebuffer size is zero, false otherwise.

◆ iRecommendedSwapChainBufferCount

constexpr unsigned int ne::Renderer::iRecommendedSwapChainBufferCount = 2

staticconstexprprivate

The number of buffers/images in swap chain that we prefer to use.

◆ maxDepth

constexpr float ne::Renderer::maxDepth = 1.0F

staticconstexprprivate

Maximum value for depth.

◆ meshesInFrustumLastFrame

MeshesInFrustum ne::Renderer::meshesInFrustumLastFrame

private

Meshes that were in camera's frustum last frame.

◆ minDepth

constexpr float ne::Renderer::minDepth = 0.0F

staticconstexprprivate

Minimum value for depth.

◆ mtxFrameConstants

std::pair<std::mutex, FrameConstants> ne::Renderer::mtxFrameConstants

private

Up to date frame-global constant data.

◆ mtxRenderSettings

std::pair<std::recursive_mutex, std::unique_ptr<RenderSettings> > ne::Renderer::mtxRenderSettings

private

Render setting object that configures the renderer. Must be used with mutex.

◆ mtxRwRenderResources

std::recursive_mutex ne::Renderer::mtxRwRenderResources

private

Lock when reading or writing to render resources. Usually used with waitForGpuToFinishWorkUpToThisPoint.

◆ mtxSpawnedEnvironmentNode

std::pair<std::mutex, EnvironmentNode*> ne::Renderer::mtxSpawnedEnvironmentNode

private

Spawned environment node which parameters are used in the rendering.

◆ pFrameResourceManager

std::unique_ptr<FrameResourceManager> ne::Renderer::pFrameResourceManager

private

Stores frame-specific GPU resources.

◆ pGameManager

GameManager* ne::Renderer::pGameManager = nullptr

private

Do not delete (free) this pointer. Game manager object that owns this renderer.

◆ pGlobalShaderResourceBindingManager

std::unique_ptr<GlobalShaderResourceBindingManager> ne::Renderer::pGlobalShaderResourceBindingManager

private

Manages all global bindings.

◆ pLightingShaderResourceManager

std::unique_ptr<LightingShaderResourceManager> ne::Renderer::pLightingShaderResourceManager

private

Stores data of all spawned light sources that is used in shaders.

◆ pPipelineManager

std::unique_ptr<PipelineManager> ne::Renderer::pPipelineManager

private

Used to store various graphics and compute pipelines.

◆ pResourceManager

std::unique_ptr<GpuResourceManager> ne::Renderer::pResourceManager

private

Used to create various GPU resources.

◆ pShaderCpuWriteResourceManager

std::unique_ptr<ShaderCpuWriteResourceBindingManager> ne::Renderer::pShaderCpuWriteResourceManager

private

Stores all shader resources with CPU write access.

◆ pShaderManager

std::unique_ptr<ShaderManager> ne::Renderer::pShaderManager

private

Used to compile shaders.

◆ pShaderTextureResourceManager

std::unique_ptr<ShaderTextureResourceBindingManager> ne::Renderer::pShaderTextureResourceManager

private

Stores all shader resources that reference textures.

◆ renderStats

RenderStatistics ne::Renderer::renderStats

private

Various statistics about rendering.

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

src/engine_lib/public/render/Renderer.h
src/engine_lib/private/render/general/Renderer.cpp

Classes

Public Member Functions

Static Public Member Functions

Protected Member Functions

Static Protected Member Functions

Private Member Functions

Static Private Member Functions

Private Attributes

Static Private Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

◆ Renderer()

Member Function Documentation

◆ calculateFrameStatistics()

◆ clampSettingsToMaxSupported()

◆ compileEngineShaders()

◆ create()

◆ createRenderer() [1/2]

◆ createRenderer() [2/2]

◆ cullLightsOutsideCameraFrustum()

◆ drawMeshesDepthPrepass()

◆ drawMeshesMainPass()

◆ drawNextFrame()

◆ drawShadowMappingPass()

◆ executeComputeShadersOnGraphicsQueue()

◆ getCurrentlyUsedGpuName()

◆ getDepthTextureNoMultisampling()

◆ getDirectionalLightNodeShadowMappingInfo()

◆ getDrawCallCounter()

◆ getFrameConstants()

◆ getFrameResourceManager()

◆ getGameManager()

◆ getGlobalShaderResourceBindingManager()

◆ getLightingShaderResourceManager()

◆ getMaxDepth()

◆ getMaxSupportedAntialiasingQuality()

◆ getMeshesInCameraFrustum()

◆ getMinDepth()

◆ getPipelineManager()

◆ getPointLightNodeShadowMapHandle()

◆ getPointLightShadowPassLightInfoArrayIndex()

◆ getRecommendedSwapChainBufferCount()

◆ getRenderResourcesMutex()

◆ getRenderSettings()

◆ getRenderStatistics()

◆ getRenderTargetSize()

◆ getResourceManager()

◆ getShaderCpuWriteResourceManager()

◆ getShaderManager()

◆ getShaderTextureResourceManager()

◆ getSpotlightNodeShadowMappingInfo()

◆ getSupportedGpuNames()

◆ getSupportedRefreshRates()

◆ getSupportedRenderResolutions()

◆ getTotalVideoMemoryInMb()

◆ getType()

◆ getUsedApiVersion()

◆ getUsedVideoMemoryInMb()

◆ getWindow()

◆ initializeRenderer()

◆ initializeRenderSettings()

◆ initializeResourceManagers()

◆ isInitialized()

◆ onActiveCameraChanged()

◆ onFramebufferSizeChanged()

◆ onFramebufferSizeChangedDerived()

◆ onRenderSettingsChanged()

◆ onRenderSettingsChangedDerived()

◆ prepareForDrawingNextFrame()

◆ prepareRenderTargetForNextFrame()

◆ present()

◆ recalculateLightTileFrustums()

◆ recalculateTargetFrameTimeFromFpsLimitSetting()

◆ resetFrameResourceManager()

◆ resetGpuResourceManager()

◆ resetLightingShaderResourceManager()

◆ resetPipelineManager()

◆ setupRenderStats()

◆ updateFrameConstantsBuffer()