oe::render::Pbr Class Reference

Physically Based Rendering. More...

#include <OxygenEngine/render/pbr.h>

Public Member Functions
std::shared_ptr< Texture >	getBRDFLut () const
	Returns the BRDF integration texture.
std::pair< std::shared_ptr< Texture >, std::shared_ptr< Texture > >	getLTCTextures () const
	Returns textures needed to store Linearly Transformed Cosines values to make area lights.
std::shared_ptr< Cubemap >	generateIrradianceCubemap (std::shared_ptr< Cubemap > source)
	Generate irradiance cubemap from a source cubemap irradiance cubemap simulate the diffuse part / ambient lighting of the scene.
std::shared_ptr< Cubemap >	generateSpecularCubemap (std::shared_ptr< Cubemap > source)
	Generate specular cubemap from a cubemap.

Detailed Description

Physically Based Rendering.

Member Function Documentation

generateIrradianceCubemap()

std::shared_ptr< Cubemap > oe::render::Pbr::generateIrradianceCubemap

(

std::shared_ptr< Cubemap >

source

)

Generate irradiance cubemap from a source cubemap irradiance cubemap simulate the diffuse part / ambient lighting of the scene.

Parameters

source

Source cubemap

Returns

Irradiance cubemap

generateSpecularCubemap()

std::shared_ptr< Cubemap > oe::render::Pbr::generateSpecularCubemap

(

std::shared_ptr< Cubemap >

source

)

Generate specular cubemap from a cubemap.

Specular cubemap simulates realistic reflections by storing varying roughness levels in mipmaps

Parameters

source

Source cubemap

Returns

Specular cubemap

getBRDFLut()

std::shared_ptr< Texture > oe::render::Pbr::getBRDFLut

(

)

const

Returns the BRDF integration texture.

This texture stores the BRDF values {Red=scale, Green=bias} according to {X=angle between light and normal, Y=roughness}

Returns

Precomputed BRDF texture

getLTCTextures()

std::pair< std::shared_ptr< Texture >, std::shared_ptr< Texture > > oe::render::Pbr::getLTCTextures

(

)

const

Returns textures needed to store Linearly Transformed Cosines values to make area lights.

Returns

First texture contains LTC matrix elements and second contains GGX/fresnel multipliers

See also

The original Pa­per on Eric Heitz’s Re­search Page for a de­tailed ex­plan­a­tion about LTC.

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

• OxygenEngine/render/pbr.h