DepthRenderTarget Class Reference

#include <depthrendertarget.h>

Public Member Functions
	DepthRenderTarget (Core &core)
	~DepthRenderTarget ()
virtual bool	init (utility::ErrorState &errorState) override
virtual void	beginRendering () override
virtual void	endRendering () override
virtual const glm::ivec2	getBufferSize () const override
virtual void	setClearColor (const RGBAColorFloat &color) override
virtual const RGBAColorFloat &	getClearColor () const override
virtual ECullWindingOrder	getWindingOrder () const override
virtual VkRenderPass	getRenderPass () const override
virtual VkSampleCountFlagBits	getSampleCount () const override
virtual bool	getSampleShadingEnabled () const override
virtual VkFormat	getColorFormat () const override
virtual VkFormat	getDepthFormat () const override
DepthRenderTexture2D &	getDepthTexture ()
Public Member Functions inherited from Resource
	Resource ()
Public Member Functions inherited from Object
	Object ()
virtual	~Object ()
virtual void	onDestroy ()
	Object (Object &)=delete
Object &	operator= (const Object &)=delete
	Object (Object &&)=delete
Object &	operator= (Object &&)=delete

Public Attributes
float	mClearValue = 1.0f
	Property: 'ClearValue' value selection used for clearing the render target. More...
bool	mSampleShading = true
	Property: 'SampleShading' Reduces texture aliasing when enabled, at higher computational cost. More...
ERasterizationSamples	mRequestedSamples = ERasterizationSamples::One
	Property: 'Samples' The number of samples used during Rasterization. For better results turn on 'SampleShading'. More...
ResourcePtr< DepthRenderTexture2D >	mDepthTexture
	Property: 'DepthTexture' depth texture to render to. More...
Public Attributes inherited from Object
std::string	mID
	Property: 'mID' unique name of the object. Used as an identifier by the system. More...

Additional Inherited Members
Static Public Member Functions inherited from Object
static bool	isIDProperty (rtti::Instance &object, const rtti::Property &property)

Description

A resource that is used to render one or multiple objects to nap::DepthRenderTexture2D exclusively. Usage of this target creates a graphics pipeline that skips the fragment shader stage of all material instances.

This objects requires a link to a nap::DepthRenderTexture2D to store the result of the render pass. Only render to a render target within a headless recording pass, failure to do so will result in undefined behavior. Make sure to call beginRendering() to start the render pass and endRendering() to end the render pass. Always call RenderService::endHeadlessRecording after having recorded all off-screen render operations.

mRenderService->beginFrame();
if (mRenderService->beginHeadlessRecording())
{
    ...
    mTargetOne->beginRendering();
    mRenderService->renderObjects(*mTargetOne, ortho_cam, objects_one);
    mTargetOne->endRendering();
    ...
    mTargetTwo->beginRendering();
    mRenderService->renderObjects(*mTargetTwo, ortho_cam, objects_two);
    mTargetTwo->endRendering();
    ...
    mRenderService->endHeadlessRecording();
}
mRenderService->endFrame();

Inheritance diagram for DepthRenderTarget:

Collaboration diagram for DepthRenderTarget:

Constructor & Destructor Documentation

DepthRenderTarget()

DepthRenderTarget

(

Core &

core

)

Every render target requires a reference to core.

Parameters

core	link to a nap core instance

~DepthRenderTarget()

~DepthRenderTarget

(

)

Destroys allocated render resources

Member Function Documentation

beginRendering()

virtual void beginRendering ( )

overridevirtual

Starts the render pass. Only start the render pass after a successful call to RenderService::beginHeadlessRecording().

mRenderService->beginFrame();
if (mRenderService->beginHeadlessRecording())
{
    ...
    mTarget->beginRendering();
    mRenderService->renderObjects(*mTarget, ortho_cam, objects_one);
    mTarget->endRendering();
    ...
    mRenderService->endHeadlessRecording();
}
mRenderService->endFrame();

Implements IRenderTarget.

endRendering()

virtual void endRendering ( )

overridevirtual

Ends the render pass. Always call this after beginRendering().

mRenderService->beginFrame();
if (mRenderService->beginHeadlessRecording())
{
    ...
    mTarget->beginRendering();
    mTarget->renderObjects(*mTarget, ortho_cam, objects_one);
    mTarget->endRendering();
    ...
    mRenderService->endHeadlessRecording();
}
mRenderService->endFrame();

Implements IRenderTarget.

getBufferSize()

virtual const glm::ivec2 getBufferSize ( ) const

overridevirtual

Returns

size in pixels of the render target.

Implements IRenderTarget.

getClearColor()

virtual const RGBAColorFloat& getClearColor ( ) const

overridevirtual

Returns

the currently used render target clear color.

Implements IRenderTarget.

getColorFormat()

virtual VkFormat getColorFormat ( ) const

overridevirtual

Returns

VK_FORMAT_UNDEFINED as the depth render target has no color attachment.

Implements IRenderTarget.

getDepthFormat()

virtual VkFormat getDepthFormat ( ) const

overridevirtual

Returns

render target depth format

Implements IRenderTarget.

getDepthTexture()

DepthRenderTexture2D& getDepthTexture

(

)

Returns

the texture that holds the result of the render pass.

getRenderPass()

virtual VkRenderPass getRenderPass ( ) const

overridevirtual

Returns

the render pass

Implements IRenderTarget.

getSampleCount()

virtual VkSampleCountFlagBits getSampleCount ( ) const

overridevirtual

Returns

used number of samples when rendering to the target.

Implements IRenderTarget.

getSampleShadingEnabled()

virtual bool getSampleShadingEnabled ( ) const

overridevirtual

Returns

if sample based shading is enabled when rendering to the target.

Implements IRenderTarget.

getWindingOrder()

virtual ECullWindingOrder getWindingOrder ( ) const

overridevirtual

Geometry winding order, defaults to clockwise.

Implements IRenderTarget.

init()

virtual bool init ( utility::ErrorState &  errorState )

overridevirtual

Initializes the render target, including all the required resources.

Parameters

errorState

contains the error if initialization failed.

Returns

if initialization succeeded.

Reimplemented from Object.

setClearColor()

virtual void setClearColor ( const RGBAColorFloat &  color )

overridevirtual

Updates the render target clear value. Stores the red component of color as the clear value.

Parameters

color

the new clear value to use.

Implements IRenderTarget.

Member Data Documentation

mClearValue

float mClearValue = 1.0f

Property: 'ClearValue' value selection used for clearing the render target.

mDepthTexture

ResourcePtr<DepthRenderTexture2D> mDepthTexture

Property: 'DepthTexture' depth texture to render to.

mRequestedSamples

ERasterizationSamples mRequestedSamples = ERasterizationSamples::One

Property: 'Samples' The number of samples used during Rasterization. For better results turn on 'SampleShading'.

mSampleShading

bool mSampleShading = true

Property: 'SampleShading' Reduces texture aliasing when enabled, at higher computational cost.