LLGL::FragmentAttribute Struct Reference

Fragment output attribute structure. More...

#include <FragmentAttribute.h>

Public Member Functions
	FragmentAttribute ()=default
	FragmentAttribute (StringLiteral name, std::uint32_t location=0)
	Constructor for minimal fragment attribute information.
	FragmentAttribute (StringLiteral name, const Format format, std::uint32_t location=0, const SystemValue systemValue=SystemValue::Undefined)
	Constructor to initialize all members.

Public Attributes
StringLiteral	name
	Fragment attribute name (for GLSL) or semantic name (for HLSL).
Format	format = Format::RGBA32Float
	Fragment attribute format. By default Format::RGBA32Float.
std::uint32_t	location = 0
	Fragment attribute location.
SystemValue	systemValue = SystemValue::Undefined
	Specifies the system value type for this fragment attribute or SystemValue::Undefined if this attribute is not a system value. By default SystemValue::Undefined.

Detailed Description

Fragment output attribute structure.

Remarks

This is primarily used for shader reflection and to bind fragment output attributes for OpenGL 2.0.

See also

FragmentShaderAttributes::outputAttribs

VertexAttribute

Constructor & Destructor Documentation

FragmentAttribute() [1/3]

LLGL::FragmentAttribute::FragmentAttribute ( )

default

FragmentAttribute() [2/3]

LLGL::FragmentAttribute::FragmentAttribute ( StringLiteral name, std::uint32_t location = 0 )

inline

Constructor for minimal fragment attribute information.

FragmentAttribute() [3/3]

LLGL::FragmentAttribute::FragmentAttribute ( StringLiteral name, const Format format, std::uint32_t location = 0, const SystemValue systemValue = SystemValue::Undefined )

inline

Constructor to initialize all members.

Member Data Documentation

format

Format LLGL::FragmentAttribute::format = Format::RGBA32Float

Fragment attribute format. By default Format::RGBA32Float.

location

std::uint32_t LLGL::FragmentAttribute::location = 0

Fragment attribute location.

Remarks

Here is an example of two fragment output attributes in GLSL with location 0 and 1:

layout(location = 0) out vec4 myBaseColor;
layout(location = 1) out vec4 mySecondaryColor;

Here is an example of two fragment output attributes in HLSL with location 0 and 1:

struct PixelShaderOutput
{
    float4 myBaseColor      : SV_Target0;
    float4 mySecondaryColor : SV_Target1;
};

Here is an example of two fragment output attributes in Metal with location 0 and 1:

struct FragmentFunctionOutput
{
    float4 myBaseColor      [[color(0)]];
    float4 mySecondaryColor [[color(1)]];
};

name

StringLiteral LLGL::FragmentAttribute::name

Fragment attribute name (for GLSL) or semantic name (for HLSL).

Remarks

Semantic names in HLSL may contain an index as suffix. However, this name must not contain an index suffix, because it will be added automatically.

systemValue

SystemValue LLGL::FragmentAttribute::systemValue = SystemValue::Undefined

Specifies the system value type for this fragment attribute or SystemValue::Undefined if this attribute is not a system value. By default SystemValue::Undefined.

Remarks

This can only be one the following values:

• SystemValue::Undefined
• SystemValue::Color
• SystemValue::Depth
• SystemValue::DepthGreater
• SystemValue::DepthLess
• SystemValue::Stencil

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

• FragmentAttribute.h