The ViewRenderer is in charge of drawing a View in a user-supplied texture. More...

Public Types
enum	PaintResult { , PR_NothingToPaint, PR_PaintedSome, PR_FrameComplete }
	The result of the Paint call. More...

Public Member Functions
virtual void	Destroy ()=0
	Destorys the ViewRednerer.

virtual PaintResult	Paint (unsigned frameId, bool runUntilCompleteFrame)=0
	Call this each frame to update the UI texture. This call will perform the actual rendering using the backend associated in the SystemRenderer.

virtual void	SetRenderTarget (void nativeTexture, void nativeDepthStencil, unsigned width, unsigned height, unsigned samples)=0
	Sets the user texture that will be used for rendering. More...

virtual void	FreeRenderingResources ()=0
	Frees all rendering resources used by Hummingbird that are associated with this specific view. To free all resources, you need to call this method on all ViewRenderer objects and on the SystemRenderer. More...

Detailed Description

The ViewRenderer is in charge of drawing a View in a user-supplied texture.

Member Enumeration Documentation

◆ PaintResult

enum cohtml::ViewRenderer::PaintResult

The result of the Paint call.

Enumerator

PR_NothingToPaint

Such frame was not found, it might have already been painted.

PR_PaintedSome

The frame did nothing because there we no actual changes to apply.

PR_FrameComplete

The call executed some commands but the frame is not yet completely done.

All rendering commands for this frame have been completed

Member Function Documentation

◆ FreeRenderingResources()

virtual void cohtml::ViewRenderer::FreeRenderingResources ( )

pure virtual

Frees all rendering resources used by Hummingbird that are associated with this specific view. To free all resources, you need to call this method on all ViewRenderer objects and on the SystemRenderer.

Note: Per-view rendering resources are the constant/vertex/index buffers (except path buffers).

See also: cohtml::SystemRenderer::FreeRenderingResources

◆ SetRenderTarget()

virtual void cohtml::ViewRenderer::SetRenderTarget	(	void *	nativeTexture,
		void *	nativeDepthStencil,
		unsigned	width,
		unsigned	height,
		unsigned	samples
	)

pure virtual

Sets the user texture that will be used for rendering.

Parameters

nativeTexture	An opaque object that will later be passed to the rendering backend. This should represent the texture to draw into in whatever object is expected by the backend.
nativeDepthStencil	An opaque object that will later be passed to the rendering backend. This should represent the depth-stencil texture in whatever object is expected by the backend.
width	the width of the backend texture
height	the height of the backend texture
samples	the number of samples of the target texture if MSAA is used. Set to 1 if no MSAA is enabled.