Urho3D::Renderer Class Reference

High-level rendering subsystem. Manages drawing of 3D views. More...

#include <Urho3D/Graphics/Renderer.h>

Inheritance diagram for Urho3D::Renderer:

Collaboration diagram for Urho3D::Renderer:

Public Types
typedef void(Object::*	ShadowMapFilter )(View *view, Texture2D *shadowMap, float blurScale)

Public Member Functions
	Renderer (Context *context)
	Construct.
virtual	~Renderer ()
	Destruct.
void	SetNumViewports (unsigned num)
	Set number of backbuffer viewports to render.
void	SetViewport (unsigned index, Viewport *viewport)
	Set a backbuffer viewport.
void	SetDefaultRenderPath (RenderPath *renderPath)
	Set default renderpath.
void	SetDefaultRenderPath (XMLFile *file)
	Set default renderpath from an XML file.
void	SetDefaultTechnique (Technique *tech)
	Set default non-textured material technique.
void	SetHDRRendering (bool enable)
	Set HDR rendering on/off.
void	SetSpecularLighting (bool enable)
	Set specular lighting on/off.
void	SetTextureAnisotropy (int level)
	Set texture anisotropy.
void	SetTextureFilterMode (TextureFilterMode mode)
	Set texture filtering.
void	SetTextureQuality (int quality)
	Set texture quality level. See the QUALITY constants in GraphicsDefs.h.
void	SetMaterialQuality (int quality)
	Set material quality level. See the QUALITY constants in GraphicsDefs.h.
void	SetDrawShadows (bool enable)
	Set shadows on/off.
void	SetShadowMapSize (int size)
	Set shadow map resolution.
void	SetShadowQuality (ShadowQuality quality)
	Set shadow quality mode. See the SHADOWQUALITY enum in GraphicsDefs.h.
void	SetShadowSoftness (float shadowSoftness)
	Set shadow softness, only works when SHADOWQUALITY_BLUR_VSM is used.
void	SetVSMShadowParameters (float minVariance, float lightBleedingReduction)
	Set shadow parameters when VSM is used, they help to reduce light bleeding. LightBleeding must be in [0, 1[.
void	SetShadowMapFilter (Object *instance, ShadowMapFilter functionPtr)
	Set post processing filter to the shadow map.
void	SetReuseShadowMaps (bool enable)
	Set reuse of shadow maps. Default is true. If disabled, also transparent geometry can be shadowed.
void	SetMaxShadowMaps (int shadowMaps)
	Set maximum number of shadow maps created for one resolution. Only has effect if reuse of shadow maps is disabled.
void	SetDynamicInstancing (bool enable)
	Set dynamic instancing on/off. When on (default), drawables using the same static-type geometry and material will be automatically combined to an instanced draw call.
void	SetNumExtraInstancingBufferElements (int elements)
	Set number of extra instancing buffer elements. Default is 0. Extra 4-vectors are available through TEXCOORD7 and further.
void	SetMinInstances (int instances)
	Set minimum number of instances required in a batch group to render as instanced.
void	SetMaxSortedInstances (int instances)
	Set maximum number of sorted instances per batch group. If exceeded, instances are rendered unsorted.
void	SetMaxOccluderTriangles (int triangles)
	Set maximum number of occluder triangles.
void	SetOcclusionBufferSize (int size)
	Set occluder buffer width.
void	SetOccluderSizeThreshold (float screenSize)
	Set required screen size (1.0 = full screen) for occluders.
void	SetThreadedOcclusion (bool enable)
	Set whether to thread occluder rendering. Default false.
void	SetMobileShadowBiasMul (float mul)
	Set shadow depth bias multiplier for mobile platforms to counteract possible worse shadow map precision. Default 1.0 (no effect.)
void	SetMobileShadowBiasAdd (float add)
	Set shadow depth bias addition for mobile platforms to counteract possible worse shadow map precision. Default 0.0 (no effect.)
void	SetMobileNormalOffsetMul (float mul)
	Set shadow normal offset multiplier for mobile platforms to counteract possible worse shadow map precision. Default 1.0 (no effect.)
void	ReloadShaders ()
	Force reload of shaders.
void	ApplyShadowMapFilter (View *view, Texture2D *shadowMap, float blurScale)
	Apply post processing filter to the shadow map. Called by View.
unsigned	GetNumViewports () const
	Return number of backbuffer viewports.
Viewport *	GetViewport (unsigned index) const
	Return backbuffer viewport by index.
RenderPath *	GetDefaultRenderPath () const
	Return default renderpath.
Technique *	GetDefaultTechnique () const
	Return default non-textured material technique.
bool	GetHDRRendering () const
	Return whether HDR rendering is enabled.
bool	GetSpecularLighting () const
	Return whether specular lighting is enabled.
bool	GetDrawShadows () const
	Return whether drawing shadows is enabled.
int	GetTextureAnisotropy () const
	Return texture anisotropy.
TextureFilterMode	GetTextureFilterMode () const
	Return texture filtering.
int	GetTextureQuality () const
	Return texture quality level.
int	GetMaterialQuality () const
	Return material quality level.
int	GetShadowMapSize () const
	Return shadow map resolution.
ShadowQuality	GetShadowQuality () const
	Return shadow quality.
float	GetShadowSoftness () const
	Return shadow softness.
Vector2	GetVSMShadowParameters () const
	Return VSM shadow parameters.
bool	GetReuseShadowMaps () const
	Return whether shadow maps are reused.
int	GetMaxShadowMaps () const
	Return maximum number of shadow maps per resolution.
bool	GetDynamicInstancing () const
	Return whether dynamic instancing is in use.
int	GetNumExtraInstancingBufferElements () const
	Return number of extra instancing buffer elements.
int	GetMinInstances () const
	Return minimum number of instances required in a batch group to render as instanced.
int	GetMaxSortedInstances () const
	Return maximum number of sorted instances per batch group.
int	GetMaxOccluderTriangles () const
	Return maximum number of occluder triangles.
int	GetOcclusionBufferSize () const
	Return occlusion buffer width.
float	GetOccluderSizeThreshold () const
	Return occluder screen size threshold.
bool	GetThreadedOcclusion () const
	Return whether occlusion rendering is threaded.
float	GetMobileShadowBiasMul () const
	Return shadow depth bias multiplier for mobile platforms.
float	GetMobileShadowBiasAdd () const
	Return shadow depth bias addition for mobile platforms.
float	GetMobileNormalOffsetMul () const
	Return shadow normal offset multiplier for mobile platforms.
unsigned	GetNumViews () const
	Return number of views rendered.
unsigned	GetNumPrimitives () const
	Return number of primitives rendered.
unsigned	GetNumBatches () const
	Return number of batches rendered.
unsigned	GetNumGeometries (bool allViews=false) const
	Return number of geometries rendered.
unsigned	GetNumLights (bool allViews=false) const
	Return number of lights rendered.
unsigned	GetNumShadowMaps (bool allViews=false) const
	Return number of shadow maps rendered.
unsigned	GetNumOccluders (bool allViews=false) const
	Return number of occluders rendered.
Zone *	GetDefaultZone () const
	Return the default zone.
Material *	GetDefaultMaterial () const
	Return the default material.
Texture2D *	GetDefaultLightRamp () const
	Return the default range attenuation texture.
Texture2D *	GetDefaultLightSpot () const
	Return the default spotlight attenuation texture.
TextureCube *	GetFaceSelectCubeMap () const
	Return the shadowed pointlight face selection cube map.
TextureCube *	GetIndirectionCubeMap () const
	Return the shadowed pointlight indirection cube map.
VertexBuffer *	GetInstancingBuffer () const
	Return the instancing vertex buffer.
const FrameInfo &	GetFrameInfo () const
	Return the frame update parameters.
void	Update (float timeStep)
	Update for rendering. Called by HandleRenderUpdate().
void	Render ()
	Render. Called by Engine.
void	DrawDebugGeometry (bool depthTest)
	Add debug geometry to the debug renderer. More...
void	QueueRenderSurface (RenderSurface *renderTarget)
	Queue a render surface's viewports for rendering. Called by the surface, or by View.
void	QueueViewport (RenderSurface *renderTarget, Viewport *viewport)
	Queue a viewport for rendering. Null surface means backbuffer.
Geometry *	GetLightGeometry (Light *light)
	Return volume geometry for a light.
Geometry *	GetQuadGeometry ()
	Return quad geometry used in postprocessing.
Texture2D *	GetShadowMap (Light *light, Camera *camera, unsigned viewWidth, unsigned viewHeight)
	Allocate a shadow map. If shadow map reuse is disabled, a different map is returned each time. More...
Texture *	GetScreenBuffer (int width, int height, unsigned format, bool cubemap, bool filtered, bool srgb, unsigned persistentKey=0)
	Allocate a rendertarget or depth-stencil texture for deferred rendering or postprocessing. Should only be called during actual rendering, not before.
RenderSurface *	GetDepthStencil (int width, int height)
	Allocate a depth-stencil surface that does not need to be readable. Should only be called during actual rendering, not before.
OcclusionBuffer *	GetOcclusionBuffer (Camera *camera)
	Allocate an occlusion buffer.
Camera *	GetShadowCamera ()
	Allocate a temporary shadow camera and a scene node for it. Is thread-safe.
void	StorePreparedView (View *view, Camera *cullCamera)
	Mark a view as prepared by the specified culling camera.
View *	GetPreparedView (Camera *cullCamera)
	Return a prepared view if exists for the specified camera. Used to avoid duplicate view preparation CPU work.
void	SetBatchShaders (Batch &batch, Technique *tech, bool allowShadows=true)
	Choose shaders for a forward rendering batch.
void	SetLightVolumeBatchShaders (Batch &batch, Camera *camera, const String &vsName, const String &psName, const String &vsDefines, const String &psDefines)
	Choose shaders for a deferred light volume batch.
void	SetCullMode (CullMode mode, Camera *camera)
	Set cull mode while taking possible projection flipping into account.
bool	ResizeInstancingBuffer (unsigned numInstances)
	Ensure sufficient size of the instancing vertex buffer. Return true if successful.
void	SaveScreenBufferAllocations ()
	Save the screen buffer allocation status. Called by View.
void	RestoreScreenBufferAllocations ()
	Restore the screen buffer allocation status. Called by View.
void	OptimizeLightByScissor (Light *light, Camera *camera)
	Optimize a light by scissor rectangle.
void	OptimizeLightByStencil (Light *light, Camera *camera)
	Optimize a light by marking it to the stencil buffer and setting a stencil test.
const Rect &	GetLightScissor (Light *light, Camera *camera)
	Return a scissor rectangle for a light.
Public Member Functions inherited from Urho3D::Object
	Object (Context *context)
	Construct.
virtual	~Object ()
	Destruct. Clean up self from event sender & receiver structures.
virtual StringHash	GetType () const =0
	Return type hash.
virtual const String &	GetTypeName () const =0
	Return type name.
virtual const TypeInfo *	GetTypeInfo () const =0
	Return type info.
virtual void	OnEvent (Object *sender, StringHash eventType, VariantMap &eventData)
	Handle event.
bool	IsInstanceOf (StringHash type) const
	Check current instance is type of specified type.
bool	IsInstanceOf (const TypeInfo *typeInfo) const
	Check current instance is type of specified type.
template<typename T >
bool	IsInstanceOf () const
	Check current instance is type of specified class.
void	SubscribeToEvent (StringHash eventType, EventHandler *handler)
	Subscribe to an event that can be sent by any sender.
void	SubscribeToEvent (Object *sender, StringHash eventType, EventHandler *handler)
	Subscribe to a specific sender's event.
void	UnsubscribeFromEvent (StringHash eventType)
	Unsubscribe from an event.
void	UnsubscribeFromEvent (Object *sender, StringHash eventType)
	Unsubscribe from a specific sender's event.
void	UnsubscribeFromEvents (Object *sender)
	Unsubscribe from a specific sender's events.
void	UnsubscribeFromAllEvents ()
	Unsubscribe from all events.
void	UnsubscribeFromAllEventsExcept (const PODVector< StringHash > &exceptions, bool onlyUserData)
	Unsubscribe from all events except those listed, and optionally only those with userdata (script registered events.)
void	SendEvent (StringHash eventType)
	Send event to all subscribers.
void	SendEvent (StringHash eventType, VariantMap &eventData)
	Send event with parameters to all subscribers. More...
VariantMap &	GetEventDataMap () const
	Return a preallocated map for event data. Used for optimization to avoid constant re-allocation of event data maps.
Context *	GetContext () const
	Return execution context.
const Variant &	GetGlobalVar (StringHash key) const
	Return global variable based on key.
const VariantMap &	GetGlobalVars () const
	Return all global variables.
void	SetGlobalVar (StringHash key, const Variant &value)
	Set global variable with the respective key and value.
Object *	GetSubsystem (StringHash type) const
	Return subsystem by type.
Object *	GetEventSender () const
	Return active event sender. Null outside event handling.
EventHandler *	GetEventHandler () const
	Return active event handler. Null outside event handling.
bool	HasSubscribedToEvent (StringHash eventType) const
	Return whether has subscribed to an event without specific sender.
bool	HasSubscribedToEvent (Object *sender, StringHash eventType) const
	Return whether has subscribed to a specific sender's event.
bool	HasEventHandlers () const
	Return whether has subscribed to any event.
template<class T >
T *	GetSubsystem () const
	Template version of returning a subsystem.
const String &	GetCategory () const
	Return object category. Categories are (optionally) registered along with the object factory. Return an empty string if the object category is not registered.
Public Member Functions inherited from Urho3D::RefCounted
	RefCounted ()
	Construct. Allocate the reference count structure and set an initial self weak reference.
virtual	~RefCounted ()
	Destruct. Mark as expired and also delete the reference count structure if no outside weak references exist.
void	AddRef ()
	Increment reference count. Can also be called outside of a SharedPtr for traditional reference counting.
void	ReleaseRef ()
	Decrement reference count and delete self if no more references. Can also be called outside of a SharedPtr for traditional reference counting.
int	Refs () const
	Return reference count.
int	WeakRefs () const
	Return weak reference count.
RefCount *	RefCountPtr ()
	Return pointer to the reference count structure.

Static Public Member Functions
static View *	GetActualView (View *view)
	Return a view or its source view if it uses one. Used internally for render statistics.
Static Public Member Functions inherited from Urho3D::Object
static const TypeInfo *	GetTypeInfoStatic ()
	Return type info static.
static bool	IsTypeOf (StringHash type)
	Check current type is type of specified type.
static bool	IsTypeOf (const TypeInfo *typeInfo)
	Check current type is type of specified type.
template<typename T >
static bool	IsTypeOf ()
	Check current type is type of specified class.

Private Member Functions
	URHO3D_OBJECT (Renderer, Object)
void	Initialize ()
	Initialize when screen mode initially set.
void	LoadShaders ()
	Reload shaders.
void	LoadPassShaders (Pass *pass)
	Reload shaders for a material pass.
void	ReleaseMaterialShaders ()
	Release shaders used in materials.
void	ReloadTextures ()
	Reload textures.
void	CreateGeometries ()
	Create light volume geometries.
void	CreateInstancingBuffer ()
	Create instancing vertex buffer.
void	SetIndirectionTextureData ()
	Create point light shadow indirection texture data.
void	UpdateQueuedViewport (unsigned index)
	Update a queued viewport for rendering. More...
void	PrepareViewRender ()
	Prepare for rendering of a new view.
void	RemoveUnusedBuffers ()
	Remove unused occlusion and screen buffers.
void	ResetShadowMapAllocations ()
	Reset shadow map allocation counts.
void	ResetScreenBufferAllocations ()
	Reset screem buffer allocation counts.
void	ResetShadowMaps ()
	Remove all shadow maps. Called when global shadow map resolution or format is changed.
void	ResetBuffers ()
	Remove all occlusion and screen buffers.
String	GetShadowVariations () const
	Find variations for shadow shaders.
void	HandleScreenMode (StringHash eventType, VariantMap &eventData)
	Handle screen mode event.
void	HandleRenderUpdate (StringHash eventType, VariantMap &eventData)
	Handle render update event.
void	BlurShadowMap (View *view, Texture2D *shadowMap, float blurScale)
	Blur the shadow map.

Private Attributes
WeakPtr< Graphics >	graphics_
	Graphics subsystem.
SharedPtr< RenderPath >	defaultRenderPath_
	Default renderpath.
SharedPtr< Technique >	defaultTechnique_
	Default non-textured material technique.
SharedPtr< Zone >	defaultZone_
	Default zone.
SharedPtr< Geometry >	dirLightGeometry_
	Directional light quad geometry.
SharedPtr< Geometry >	spotLightGeometry_
	Spot light volume geometry.
SharedPtr< Geometry >	pointLightGeometry_
	Point light volume geometry.
SharedPtr< VertexBuffer >	instancingBuffer_
	Instance stream vertex buffer.
SharedPtr< Material >	defaultMaterial_
	Default material.
SharedPtr< Texture2D >	defaultLightRamp_
	Default range attenuation texture.
SharedPtr< Texture2D >	defaultLightSpot_
	Default spotlight attenuation texture.
SharedPtr< TextureCube >	faceSelectCubeMap_
	Face selection cube map for shadowed pointlights.
SharedPtr< TextureCube >	indirectionCubeMap_
	Indirection cube map for shadowed pointlights.
Vector< SharedPtr< Node > >	shadowCameraNodes_
	Reusable scene nodes with shadow camera components.
Vector< SharedPtr < OcclusionBuffer > >	occlusionBuffers_
	Reusable occlusion buffers.
HashMap< int, Vector < SharedPtr< Texture2D > > >	shadowMaps_
	Shadow maps by resolution.
HashMap< int, SharedPtr < Texture2D > >	colorShadowMaps_
	Shadow map dummy color buffers by resolution.
HashMap< int, PODVector< Light * > >	shadowMapAllocations_
	Shadow map allocations by resolution.
Object *	shadowMapFilterInstance_
	Instance of shadow map filter.
ShadowMapFilter	shadowMapFilter_
	Function pointer of shadow map filter.
HashMap< long long, Vector < SharedPtr< Texture > > >	screenBuffers_
	Screen buffers by resolution and format.
HashMap< long long, unsigned >	screenBufferAllocations_
	Current screen buffer allocations by resolution and format.
HashMap< long long, unsigned >	savedScreenBufferAllocations_
	Saved status of screen buffer allocations for restoring.
HashMap< Pair< Light *, Camera * > , Rect >	lightScissorCache_
	Cache for light scissor queries.
Vector< SharedPtr< Viewport > >	viewports_
	Backbuffer viewports.
Vector< Pair< WeakPtr < RenderSurface >, WeakPtr < Viewport > > >	queuedViewports_
	Render surface viewports queued for update.
Vector< WeakPtr< View > >	views_
	Views that have been processed this frame.
HashMap< Camera *, WeakPtr < View > >	preparedViews_
	Prepared views by culling camera.
HashSet< Octree * >	updatedOctrees_
	Octrees that have been updated during the frame.
HashSet< Technique * >	shaderErrorDisplayed_
	Techniques for which missing shader error has been displayed.
Mutex	rendererMutex_
	Mutex for shadow camera allocation.
Vector< String >	deferredLightPSVariations_
	Current variation names for deferred light volume shaders.
FrameInfo	frame_
	Frame info for rendering.
int	textureAnisotropy_
	Texture anisotropy level.
TextureFilterMode	textureFilterMode_
	Texture filtering mode.
int	textureQuality_
	Texture quality level.
int	materialQuality_
	Material quality level.
int	shadowMapSize_
	Shadow map resolution.
ShadowQuality	shadowQuality_
	Shadow quality.
float	shadowSoftness_
	Shadow softness, only works when SHADOWQUALITY_BLUR_VSM is used.
Vector2	vsmShadowParams_
	Shadow parameters when VSM is used, they help to reduce light bleeding.
int	maxShadowMaps_
	Maximum number of shadow maps per resolution.
int	minInstances_
	Minimum number of instances required in a batch group to render as instanced.
int	maxSortedInstances_
	Maximum sorted instances per batch group.
int	maxOccluderTriangles_
	Maximum occluder triangles.
int	occlusionBufferSize_
	Occlusion buffer width.
float	occluderSizeThreshold_
	Occluder screen size threshold.
float	mobileShadowBiasMul_
	Mobile platform shadow depth bias multiplier.
float	mobileShadowBiasAdd_
	Mobile platform shadow depth bias addition.
float	mobileNormalOffsetMul_
	Mobile platform shadow normal offset multiplier.
unsigned	numOcclusionBuffers_
	Number of occlusion buffers in use.
unsigned	numShadowCameras_
	Number of temporary shadow cameras in use.
unsigned	numPrimitives_
	Number of primitives (3D geometry only.)
unsigned	numBatches_
	Number of batches (3D geometry only.)
unsigned	shadersChangedFrameNumber_
	Frame number on which shaders last changed.
unsigned char	lightStencilValue_
	Current stencil value for light optimization.
bool	hdrRendering_
	HDR rendering flag.
bool	specularLighting_
	Specular lighting flag.
bool	drawShadows_
	Draw shadows flag.
bool	reuseShadowMaps_
	Shadow map reuse flag.
bool	dynamicInstancing_
	Dynamic instancing flag.
int	numExtraInstancingBufferElements_
	Number of extra instancing data elements.
bool	threadedOcclusion_
	Threaded occlusion rendering flag.
bool	shadersDirty_
	Shaders need reloading flag.
bool	initialized_
	Initialized flag.
bool	resetViews_
	Flag for views needing reset.

Additional Inherited Members
Protected Attributes inherited from Urho3D::Object
Context *	context_
	Execution context.

Detailed Description

High-level rendering subsystem. Manages drawing of 3D views.

Member Function Documentation

void Urho3D::Renderer::DrawDebugGeometry

(

bool

depthTest

)

Add debug geometry to the debug renderer.

Todo:

Because debug geometry is per-scene, if two cameras show views of the same area, occlusion is not shown correctly

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Texture2D * Urho3D::Renderer::GetShadowMap	(	Light *	light,
		Camera *	camera,
		unsigned	viewWidth,
		unsigned	viewHeight
	)

Allocate a shadow map. If shadow map reuse is disabled, a different map is returned each time.

Todo:

Allow to specify maximum shadow maps per resolution, as smaller shadow maps take less memory

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void Urho3D::Renderer::UpdateQueuedViewport ( unsigned  index )

private

Update a queued viewport for rendering.

Todo:

May result in incorrect debug geometry culling if the same scene is drawn from multiple viewports

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

• Source/Urho3D/Graphics/Renderer.h
• Source/Urho3D/Graphics/Renderer.cpp