Detailed Description

Base class for hardware viewport renderers.

MViewportRenderer is a class which represents a hardware viewport renderer.

Examples:: D3DViewportRenderer.cpp, D3DViewportRenderer.h, OpenGLViewportRenderer.cpp, and OpenGLViewportRenderer.h.

#include <MViewportRenderer.h>

Public Types
enum	RenderingAPI { kOpenGL, kDirect3D, kSoftware }
	API used for rendering. More...
enum	RenderingOverride { kNoOverride, kOverrideAllDrawing, kOverrideThenStandard }
	Override status. More...
enum	RenderingExclusion
	Rendering exclusions when RenderingOverride is kOverrideThenStandard.
Public Member Functions
	MViewportRenderer (const MString &name)
	Constructor.
virtual	~MViewportRenderer ()
	Destructor.
virtual MStatus	initialize ()=0
	Renderer initialization.
virtual MStatus	uninitialize ()=0
	Renderer cleanup.
virtual MStatus	render (const MRenderingInfo &info)=0
	Method which does the actual rendering.
virtual bool	nativelySupports (MViewportRenderer::RenderingAPI api, float version)=0
	Query the native rendering API's supported by this renderer.
virtual bool	override (MViewportRenderer::RenderingOverride override)=0
	Check if override exists.
virtual unsigned int	overrideThenStandardExclusion () const
	Rendering exclusion for standard pass of kOverrideThenStandard.
MStatus	registerRenderer () const
	Register the renderer.
MStatus	deregisterRenderer () const
	Deregister the renderer.
const MString &	name () const
	Return the internal name of the renderer.
const MString &	UIname () const
	Return the name of the renderer as it should appear to users.
void	setUIName (const MString &name)
	Set the name of the renderer as it should appear to users.
MViewportRenderer::RenderingOverride	renderingOverride () const
	Return the override status.
void	setRenderingOverride (RenderingOverride override)
	Set the rendering override for the renderer.
Friends
class	MHardwareRenderer Search for all occurrences

Member Enumeration Documentation

enum RenderingAPI

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API used for rendering.

Enumerator:

kOpenGL	Renderer uses hardware OpenGL for rendering. Search for all occurrences
kDirect3D	Renderer uses hardware Direct3D for rendering. Search for all occurrences
kSoftware	Renderer renders using software. Search for all occurrences

enum RenderingOverride

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Override status.

Enumerator:

kNoOverride	Override nothing. Search for all occurrences
kOverrideAllDrawing	Override all drawing. Search for all occurrences
kOverrideThenStandard	Override all drawing, then follow with a standard render pass. Search for all occurrences

Constructor & Destructor Documentation

MViewportRenderer ( const MString & name )

Constructor.

By default the user interface name is set to be the internal name. The user is free to change the UI. The internal name cannot be changed once set.

Parameters:

[in] name internal name of the renderer

~MViewportRenderer ( ) [virtual]

Destructor.

Class destructor.

Member Function Documentation

MStatus initialize ( ) [pure virtual]

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Renderer initialization.

This method gets called to allow the renderer to perform a one time initialization.

The corresponding method for cleanup is uninitialize().

Initialization is called if and only if the renderer has been registered. See register() method.

Returns:: MStatus::kSuccess : if execution was successful.

Examples:: D3DViewportRenderer.h, and OpenGLViewportRenderer.h.

MStatus uninitialize ( ) [pure virtual]

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Renderer cleanup.

This method gets called to allow the renderer to perform a one time de-initialization.

The corresponding method for cleanup is initialize().

Returns:: MStatus::kSuccess : if execution was successful.

Examples:: D3DViewportRenderer.h, and OpenGLViewportRenderer.h.

MStatus render ( const MRenderingInfo & info ) [pure virtual]

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Method which does the actual rendering.

This method gets called to allow the renderer to perform rendering.

It will be called whenever the viewport to which it is registered, requires a refresh.

Parameters:

[in] info

Returns:: MStatus::kSuccess : if execution was successful.

Examples:: D3DViewportRenderer.h, and OpenGLViewportRenderer.h.

bool nativelySupports	(	MViewportRenderer::RenderingAPI	api,
		float	version
	)		`[pure virtual]`

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Query the native rendering API's supported by this renderer.

Query the renderer to see if the renderer can natively support a specific API and API version number.

This is to provide compatibility checks between the drawing API used for the render target of this renderer, and the renderer itself.

As an example the render target may be using OpenGL natively while the renderer associated with the render target is using Direct3D. In this case the method should return false.

As an example the render target may be using Direct3D version K natively while the renderer associated with the render target is using Direct3D version L. In this case the method may return false.

Parameters:

[in]	api	rendering API natively used by the render target
[in]	version	rendering API version of the API natively used by the render target

Returns:: MViewportRenderer::RenderingAPI : rendering API.

Examples:: D3DViewportRenderer.h, and OpenGLViewportRenderer.h.

bool override ( MViewportRenderer::RenderingOverride override ) [pure virtual]

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Check if override exists.

This method gets called to query the renderer to see if it has a given type of render target override.

Parameters:

[in] override render target override

Returns:: true if the renderer overrides the render target override.

Examples:: D3DViewportRenderer.h, and OpenGLViewportRenderer.h.

unsigned int overrideThenStandardExclusion ( ) const [virtual]

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Rendering exclusion for standard pass of kOverrideThenStandard.

This method gets called to query the renderer to see what should be excluded from the standard pass when the RenderingOverride mode is kOverrideThenStandard.

If this method is not redefined by the derived class, it returns kExcludeAll.

Returns:: A bitmask constructed from the RenderingExclusion enum.

MStatus registerRenderer ( ) const

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Register the renderer.

Registration should occur when the plugin is initialized. A renderer will be available for usage from 3d modeling viewports if and only if it has been registered.

Additionally, the initialization method initialize() will be made only if a renderer has been registered.