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

#include <Urho3D/Graphics/Renderer.h>

Inheritance diagram for Urho3D::Renderer:
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Collaboration diagram for Urho3D::Renderer:
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Public Types

using ShadowMapFilter = void(Object::*)(View *view, Texture2D *shadowMap, float blurScale)
 

Public Member Functions

 Renderer (Context *context)
 Construct.
 
virtual ~Renderer () override
 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 default texture max anisotropy level.
 
void SetTextureFilterMode (TextureFilterMode mode)
 Set default 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 SetVSMMultiSample (int multiSample)
 Set VSM shadow map multisampling level. Default 1 (no multisampling.)
 
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.
 
ViewportGetViewport (unsigned index) const
 Return backbuffer viewport by index.
 
ViewportGetViewportForScene (Scene *scene, unsigned index) const
 Return nth backbuffer viewport associated to a scene. Index 0 returns the first.
 
RenderPathGetDefaultRenderPath () const
 Return default renderpath.
 
TechniqueGetDefaultTechnique () 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 default texture max. anisotropy level.
 
TextureFilterMode GetTextureFilterMode () const
 Return default texture filtering mode.
 
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.
 
int GetVSMMultiSample () const
 Return VSM shadow multisample level.
 
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.
 
ZoneGetDefaultZone () const
 Return the default zone.
 
MaterialGetDefaultMaterial () const
 Return the default material.
 
Texture2DGetDefaultLightRamp () const
 Return the default range attenuation texture.
 
Texture2DGetDefaultLightSpot () const
 Return the default spotlight attenuation texture.
 
TextureCubeGetFaceSelectCubeMap () const
 Return the shadowed pointlight face selection cube map.
 
TextureCubeGetIndirectionCubeMap () const
 Return the shadowed pointlight indirection cube map.
 
VertexBufferGetInstancingBuffer () const
 Return the instancing vertex buffer.
 
const FrameInfoGetFrameInfo () 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.
 
GeometryGetLightGeometry (Light *light)
 Return volume geometry for a light.
 
GeometryGetQuadGeometry ()
 Return quad geometry used in postprocessing.
 
Texture2DGetShadowMap (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...
 
TextureGetScreenBuffer (int width, int height, unsigned format, int multiSample, bool autoResolve, 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. More...
 
RenderSurfaceGetDepthStencil (int width, int height, int multiSample, bool autoResolve)
 Allocate a depth-stencil surface that does not need to be readable. Should only be called during actual rendering, not before.
 
OcclusionBufferGetOcclusionBuffer (Camera *camera)
 Allocate an occlusion buffer.
 
CameraGetShadowCamera ()
 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.
 
ViewGetPreparedView (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, const BatchQueue &queue)
 Choose shaders for a forward rendering batch. The related batch queue is provided in case it has extra shader compilation defines.
 
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 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 RectGetLightScissor (Light *light, Camera *camera)
 Return a scissor rectangle for a light.
 
- Public Member Functions inherited from Urho3D::Object
 Object (Context *context)
 Construct.
 
virtual ~Object () override
 Destruct. Clean up self from event sender & receiver structures.
 
virtual StringHash GetType () const =0
 Return type hash.
 
virtual const StringGetTypeName () const =0
 Return type name.
 
virtual const TypeInfoGetTypeInfo () 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.
 
template<typename T >
T * Cast ()
 Cast the object to specified most derived class.
 
template<typename T >
const T * Cast () const
 Cast the object to specified most derived 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 SubscribeToEvent (StringHash eventType, const std::function< void(StringHash, VariantMap &)> &function, void *userData=nullptr)
 Subscribe to an event that can be sent by any sender.
 
void SubscribeToEvent (Object *sender, StringHash eventType, const std::function< void(StringHash, VariantMap &)> &function, void *userData=nullptr)
 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.
 
VariantMapGetEventDataMap () const
 Return a preallocated map for event data. Used for optimization to avoid constant re-allocation of event data maps.
 
template<typename... Args>
void SendEvent (StringHash eventType, Args...args)
 Send event with variadic parameter pairs to all subscribers. The parameter pairs is a list of paramID and paramValue separated by comma, one pair after another.
 
ContextGetContext () const
 Return execution context.
 
const VariantGetGlobalVar (StringHash key) const
 Return global variable based on key.
 
const VariantMapGetGlobalVars () const
 Return all global variables.
 
void SetGlobalVar (StringHash key, const Variant &value)
 Set global variable with the respective key and value.
 
ObjectGetSubsystem (StringHash type) const
 Return subsystem by type.
 
ObjectGetEventSender () const
 Return active event sender. Null outside event handling.
 
EventHandlerGetEventHandler () 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 StringGetCategory () const
 Return object category. Categories are (optionally) registered along with the object factory. Return an empty string if the object category is not registered.
 
void SetBlockEvents (bool block)
 Block object from sending and receiving events.
 
bool GetBlockEvents () const
 Return sending and receiving events blocking status.
 
- 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.
 
RefCountRefCountPtr ()
 Return pointer to the reference count structure.
 

Static Public Member Functions

static ViewGetActualView (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 TypeInfoGetTypeInfoStatic ()
 Return type info static.
 

Private Member Functions

 URHO3D_OBJECT (Renderer, Object)
 
void Initialize ()
 Initialize when screen mode initially set.
 
void LoadShaders ()
 Reload shaders.
 
void LoadPassShaders (Pass *pass, Vector< SharedPtr< ShaderVariation > > &vertexShaders, Vector< SharedPtr< ShaderVariation > > &pixelShaders, const BatchQueue &queue)
 Reload shaders for a material pass. The related batch queue is provided in case it has extra shader compilation defines.
 
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< Graphicsgraphics_
 Graphics subsystem.
 
SharedPtr< RenderPathdefaultRenderPath_
 Default renderpath.
 
SharedPtr< TechniquedefaultTechnique_
 Default non-textured material technique.
 
SharedPtr< ZonedefaultZone_
 Default zone.
 
SharedPtr< GeometrydirLightGeometry_
 Directional light quad geometry.
 
SharedPtr< GeometryspotLightGeometry_
 Spot light volume geometry.
 
SharedPtr< GeometrypointLightGeometry_
 Point light volume geometry.
 
SharedPtr< VertexBufferinstancingBuffer_
 Instance stream vertex buffer.
 
SharedPtr< MaterialdefaultMaterial_
 Default material.
 
SharedPtr< Texture2DdefaultLightRamp_
 Default range attenuation texture.
 
SharedPtr< Texture2DdefaultLightSpot_
 Default spotlight attenuation texture.
 
SharedPtr< TextureCubefaceSelectCubeMap_
 Face selection cube map for shadowed pointlights.
 
SharedPtr< TextureCubeindirectionCubeMap_
 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.
 
ObjectshadowMapFilterInstance_
 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< StringdeferredLightPSVariations_
 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 vsmMultiSample_
 Multisample level for VSM shadows.
 
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
Contextcontext_
 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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Texture * Urho3D::Renderer::GetScreenBuffer ( int  width,
int  height,
unsigned  format,
int  multiSample,
bool  autoResolve,
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.

Todo:
Mipmaps disabled for now. Allow to request mipmapped buffer?

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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