Wizt::ShaderFields Class Reference

Inheritance diagram for Wizt::ShaderFields:

Public Types
using	ShaderFields_t = map< string, TypedSlot< Fiber::FieldSelector > >
	Mapping from shader attribute names to input field selectors.
using	string_set = std::unordered_set< string >
using	getSkeletonFieldsResults_t = map< string, RefPtr< Fiber::Field > >::value_type
using	FieldValidator_t = std::function< WeakPtr< Fiber::Field >(const Fiber::Skeleton &RI, const std::string &ShaderAttributeName)>

Public Member Functions
	ShaderFields (VObject *that, const string &AllowImplicitFieldsSlotName="AllowImplicitFields", int AllowImplicitFieldsSlotEL=9)
string_set	getShaderDefaultFields (const string &Shaderfield) const
bool	isNewerThan (const Ageable &A) const
getSkeletonFieldsResults_t	getSkeletonField (const RefPtr< Fiber::Skeleton > &DestVertexSkeleton, const RefPtr< Fiber::Chart > &chart, const string &ShaderfieldName, const RefPtr< ValuePool > &Context, const FieldSelector &FS) const
virtual bool	validateFragment (const RefPtr< ValuePool > &Context, const RenderNamespace::glsl &FieldID, const RefPtr< Fiber::FragmentID > &FID, const WeakPtr< Fiber::FiberTypeBase > &FTB, int ElementTextureLength) const
bool	validateFields (VRequest &Context, const RefPtr< Fiber::Skeleton > &theSkeleton, const RefPtr< Fiber::Chart > &chart, const FieldValidator_t &FV, string &ValidateInputInfoString) const
bool	isMandatoryShaderAttribute (const string &AttributeName) const
	Check whether a given shader attribute must be provided.
bool	addField (VRequest &Context, const RefPtr< Fiber::Skeleton > &theSkeleton, const RefPtr< Fiber::Chart > &chart, const TypedSlot< Fiber::FieldSelector > &theFieldSelector, const RenderNamespace::glsl &AttributeName, RenderFields &Result, string &InfoString)
	Add a field to the provided FieldList.
bool	addFields (VRequest &Context, const RefPtr< Fiber::Skeleton > &theSkeleton, const RefPtr< Fiber::Chart > &chart, RenderFields &Result, string &InfoString)
	Add all stored fields to the provided FieldList.
RenderNamespace::glsl	getShaderDefinitions (const RefPtr< ValuePool > &Context, const RenderNamespace::glsl &FieldID, const Fiber::Field &F, const RefPtr< Fiber::FragmentID > &FID, const RefPtr< Fiber::SizeInterface > &PrimaryDataFragmentSize) const
RenderNamespace::glsl	getFieldsShaderDefinitions (const RefPtr< ValuePool > &Context, const RenderFields::RefinementIndex &SkeletonID, const RefPtr< Fiber::FragmentID > &FID, const RefPtr< Fiber::SizeInterface > &PrimaryDataFragmentSize, const RenderFields &RF) const
RenderNamespace::glsl	getFieldsShaderPrefix (const RefPtr< ValuePool > &Context, const RenderFields::RefinementIndex &SkeletonID, const RefPtr< Fiber::FragmentID > &FID, Fiber::CreativeArrayBase &myPrimaryDataFragment, const RenderFields &RF) const

Static Public Member Functions
static getSkeletonFieldsResults_t	getSkeletonField (const RefPtr< Fiber::Skeleton > &DestVertexSkeleton, const RefPtr< Fiber::Chart > &chart, const FieldSelector &FS, const string_set &ImplicitFieldNames, bool AllowImplicitFields)
	Provide a field on a skeleton, considering possibly given implicit field names, i.e.
static RenderNamespace::glsl	getPositionsShaderFunction (const Fiber::CreativeArrayBase &theCoordinateFragment)

Public Attributes
ShaderFields_t	myShaderFields
	Map from names used in the GLSL code to input field slots.
VObject::in< bool >	inAllowImplicitFields
std::unordered_map< string, string_set >	myShaderDefaultFields
	For each shader field optionally provide a name for the field on the Grid.
std::unordered_set< std::string >	MandatoryShaderAttributes

Static Public Attributes
static const char	define_ATTRIBUTE_INDEX_LOCATION []
	A glsl macro to define a.

Member Function Documentation

addFields()

bool Wizt::ShaderFields::addFields	(	VRequest &	Context,
		const RefPtr< Fiber::Skeleton > &	theSkeleton,
		const RefPtr< Fiber::Chart > &	chart,
		RenderFields &	Result,
		string &	InfoString
	)

Add all stored fields to the provided FieldList.

To be called from addSupplementaryData() .

getPositionsShaderFunction()

RenderNamespace::glsl Wizt::ShaderFields::getPositionsShaderFunction ( const Fiber::CreativeArrayBase &  theCoordinateFragment )

static

    Defines functions in the vertex shader that allow to compute positions also
    from uniform coordinates.

vec4    get_gl_Position();
vec4    get_gl_RelativePosition();

getShaderDefinitions()

RenderNamespace::glsl Wizt::ShaderFields::getShaderDefinitions	(	const RefPtr< ValuePool > &	Context,
		const RenderNamespace::glsl &	FieldID,
		const Fiber::Field &	F,
		const RefPtr< Fiber::FragmentID > &	FID,
		const RefPtr< Fiber::SizeInterface > &	PrimaryDataFragmentSize
	)		const

Support for arrays per vertex via texture buffers.

References Fiber::Field::getCreator(), Fiber::Field::getElementFiberType(), Fiber::Field::getElementType(), Wizt::Range::Max(), Wizt::Range::Min(), Fiber::HyperslabParameters::multiplicity(), std::to_string(), and MemCore::Typename().

getSkeletonField()

static getSkeletonFieldsResults_t Wizt::ShaderFields::getSkeletonField ( const RefPtr< Fiber::Skeleton > &  DestVertexSkeleton, const RefPtr< Fiber::Chart > &  chart, const FieldSelector &  FS, const string_set &  ImplicitFieldNames, bool  AllowImplicitFields  )

static

Provide a field on a skeleton, considering possibly given implicit field names, i.e.

if no field can be found via the FieldSelector, then go via the implicit field names as given by a list of strings.

isMandatoryShaderAttribute()

bool Wizt::ShaderFields::isMandatoryShaderAttribute

(

const string &

AttributeName

)

const

Check whether a given shader attribute must be provided.

This function simply checks its mentioning in the MandatoryShaderAttributes member array.

Member Data Documentation

define_ATTRIBUTE_INDEX_LOCATION

constinit const char Wizt::ShaderFields::define_ATTRIBUTE_INDEX_LOCATION

static

Initial value:

=
GLSL_START R"SHADER(
 
// ShaderFields::getShaderDefinitions()
 
#ifndef ATTRIBUTE_INDEX_LOCATION
 
# if __VERSION__ >= 330
#  define ATTRIBUTE_INDEX_LOCATION(index) layout(location=index)
# else
#  define ATTRIBUTE_INDEX_LOCATION(index)
# endif
 
#endif // ATTRIBUTE_INDEX_LOCATION
 
)SHADER"

A glsl macro to define a.

layout(location=index)

attribute for vertex attributes, but only for GLSL version higher than 3.3, otherwie it is empty.

myShaderFields

ShaderFields_t Wizt::ShaderFields::myShaderFields

Map from names used in the GLSL code to input field slots.

This map has to be filled in the derived object's constructor or setup function / functor. For instance:

class        MyObject : public FieldAnemone
{
     TypedSlot<Fiber::Field>
             SecondaryField;
 
public:
     typedef LIST<float, LIST<double>>       FieldType;
 
     MyObject(...)
     {
             myShaderFields[ "SecondaryField" ] = SecondaryField;
     }
};

The specified field's data will then appears as vertex shader attribute

in float SecondaryField;