nkGraphics::ShaderInstanceMemorySlot Class Reference

A memory slot for per instance data in a Shader. More...

Inheritance diagram for nkGraphics::ShaderInstanceMemorySlot:

Public Types
enum	DATA_TYPE { DATA_TYPE::UNKNOWN = 0, DATA_TYPE::WORLD_MATRIX, DATA_TYPE::WORLD_MATRIX_INV_TRANSPOSE, DATA_TYPE::CUSTOM }

Public Member Functions
	ShaderInstanceMemorySlot (System *system) noexcept
virtual	~ShaderInstanceMemorySlot ()
DATA_TYPE	getType () const
nkMemory::StringView	getSemanticName () const
virtual unsigned int	getDataSize () const
virtual nkMemory::StringView	getDataTypeAsString () const override
void	setAsWorldMatrix ()
void	setAsWorldMatrixInvTranspose ()
void	setAsCustom (ShaderInstanceCustomSlot *slot)
virtual void	exportClassToTree (nkExport::Node *rootNode) override
virtual void	importClassFromTree (nkExport::Node *rootNode) override
Public Member Functions inherited from nkGraphics::ShaderMemorySlot
	ShaderMemorySlot () noexcept
virtual	~ShaderMemorySlot ()
nkMemory::StringView	getSlotType () const
Public Member Functions inherited from nkExport::Exportable
	Exportable () noexcept
virtual	~Exportable ()

Detailed Description

A memory slot for per instance data in a Shader.

These slots are fed within a Shader, and offer the capabilities of feeding per instance data to a Program.

Member Enumeration Documentation

DATA_TYPE

enum nkGraphics::ShaderInstanceMemorySlot::DATA_TYPE

strong

Describes the type of data an instance slot can be.

Enumerator
UNKNOWN	Unknown place holder.
WORLD_MATRIX	Instance's world matrix.
WORLD_MATRIX_INV_TRANSPOSE	Instance's world matrix, inversed and transposed.
CUSTOM	Custom instance slot, coming from external code.

Constructor & Destructor Documentation

ShaderInstanceMemorySlot()

nkGraphics::ShaderInstanceMemorySlot::ShaderInstanceMemorySlot ( System *  system )

noexcept

Constructor. See Shader::addInstanceMemorySlot().

Parameters

system

The system the resource should live in.

~ShaderInstanceMemorySlot()

virtual nkGraphics::ShaderInstanceMemorySlot::~ShaderInstanceMemorySlot ( )

virtual

Destructor.

Member Function Documentation

getType()

DATA_TYPE nkGraphics::ShaderInstanceMemorySlot::getType

(

)

const

Returns

The slot type.

getSemanticName()

nkMemory::StringView nkGraphics::ShaderInstanceMemorySlot::getSemanticName

(

)

const

Returns

The semantic name provided by the slot.

getDataSize()

virtual unsigned int nkGraphics::ShaderInstanceMemorySlot::getDataSize ( ) const

virtual

Returns

The size, in byte, the slot needs to write for an instance.

getDataTypeAsString()

virtual nkMemory::StringView nkGraphics::ShaderInstanceMemorySlot::getDataTypeAsString ( ) const

overridevirtual

Returns

The data type, already translated as a string.

Implements nkGraphics::ShaderMemorySlot.

setAsWorldMatrix()

void nkGraphics::ShaderInstanceMemorySlot::setAsWorldMatrix

(

)

Prepare the slot to feed world matrices.

This adds a WORLD_MATRIX attribute within the declaration of mesh data. In HLSL, for instance, data can then be accessed like such :

struct VertexInput
{
  float4 position : POSITION ;
  float4x4 world : WORLD_MATRIX ;
} ;

The matrix is provided as row-major, meaning they can be used like :

float4x4 mvp = mul(projection, mul(view, world)) ;

setAsWorldMatrixInvTranspose()

void nkGraphics::ShaderInstanceMemorySlot::setAsWorldMatrixInvTranspose

(

)

Prepare the slot to feed world matrices, inversed and transposed.

This adds a WORLD_MATRIX_INVERSE_TRANSPOSE attribute within the declaration of mesh data. In HLSL, for instance, data can then be access like such :

struct VertexInput
{
  float4 position : POSITION ;
  float4x4 worldInvTranspose : WORLD_MATRIX_INVERSE_TRANSPOSE ;
} ;

The matrix is provided as row-major, meaning they can be used like :

float4 inv = mul(worldInvTranspose, vec) ;

This matrix can be useful to work with normals.

setAsCustom()

void nkGraphics::ShaderInstanceMemorySlot::setAsCustom

(

ShaderInstanceCustomSlot *

slot

)

Prepares the slot to use a custom slot to feed the data.

Parameters

slot	The custom slot that should feed the data.

exportClassToTree()

virtual void nkGraphics::ShaderInstanceMemorySlot::exportClassToTree ( nkExport::Node *  rootNode )

overridevirtual

Basic exporting capabilities.

Parameters

rootNode

The tree to export to.

Reimplemented from nkGraphics::ShaderMemorySlot.

importClassFromTree()

virtual void nkGraphics::ShaderInstanceMemorySlot::importClassFromTree ( nkExport::Node *  rootNode )

overridevirtual

Basic importing capabilities.

Parameters

rootNode

The tree to import from.

Implements nkExport::Exportable.

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

• Documentation/Headers/NilkinsGraphics/Shaders/Memory/ShaderInstanceMemorySlot.h