shader

Documentation

Overview

Package shader provides the default shader(s) for Vermeer.

This package is in heavy development so documentation somewhat sketchy.

Index

• type Debug
  • func (sh *Debug) Def() core.NodeDef
  • func (sh *Debug) Eval(sg *core.ShaderContext)
  • func (sh *Debug) EvalEmission(sg *core.ShaderContext, omegaO m.Vec3) colour.RGB
  • func (sh *Debug) Name() string
  • func (sh *Debug) PostRender() error
  • func (sh *Debug) PreRender() error
• type ShaderStd
  • func (sh *ShaderStd) Def() core.NodeDef
  • func (sh *ShaderStd) Eval(sg *core.ShaderContext)
  • func (sh *ShaderStd) EvalEmission(sg *core.ShaderContext, omegaO m.Vec3) colour.RGB
  • func (sh *ShaderStd) Name() string
  • func (sh *ShaderStd) PostRender() error
  • func (sh *ShaderStd) PreRender() error

Types

type Debug

type Debug struct {
	NodeDef core.NodeDef `node:"-"`
	MtlName string       `node:"Name"`

	Sides  int              `node:",opt"` // One or two sided
	Colour param.RGBUniform // Colour parameter
}

Debug is the default surface shader.

func (*Debug) Def

func (sh *Debug) Def() core.NodeDef

Def is a core.Node method.

func (*Debug) Eval

func (sh *Debug) Eval(sg *core.ShaderContext)

Eval implements core.Shader. Performs all shading for the surface point in sg. May trace rays and shadow rays.

func (*Debug) EvalEmission

func (sh *Debug) EvalEmission(sg *core.ShaderContext, omegaO m.Vec3) colour.RGB

EvalEmission implements core.Shader.

func (*Debug) Name

func (sh *Debug) Name() string

Name is a core.Node method.

func (*Debug) PostRender

func (sh *Debug) PostRender() error

PostRender is a core.Node method.

func (*Debug) PreRender

func (sh *Debug) PreRender() error

PreRender is a core.Node method.

type ShaderStd

type ShaderStd struct {
	NodeDef core.NodeDef `node:"-"`
	MtlName string       `node:"Name"`

	EmissionColour   param.RGBUniform     `node:",opt"`
	EmissionStrength param.Float32Uniform `node:",opt"`

	Sides int `node:",opt"` // One or two sided

	DiffuseColour    param.RGBUniform     `node:",opt"` // Colour parameter
	DiffuseStrength  param.Float32Uniform `node:",opt"` // Weight parameter
	DiffuseRoughness param.Float32Uniform `node:",opt"` // Oren-Nayar Roughness parameter

	Spec1Colour       param.RGBUniform     `node:",opt"` // Colour parameter
	Spec1Strength     param.Float32Uniform `node:",opt"` // Weight parameter
	Spec1Roughness    param.Float32Uniform `node:",opt"`
	Spec1FresnelModel string               `node:",opt"`

	Spec1FresnelRefl param.RGBUniform `node:",opt"` // Colour parameter
	Spec1FresnelEdge param.RGBUniform `node:",opt"` // Colour parameter

	IOR param.Float32Uniform `node:",opt"`
	// contains filtered or unexported fields
}

ShaderStd is the default surface shader.

func (*ShaderStd) Def

func (sh *ShaderStd) Def() core.NodeDef

Def is a core.Node method.

func (*ShaderStd) Eval

func (sh *ShaderStd) Eval(sg *core.ShaderContext)

Eval implements core.Shader. Performs all shading for the surface point in sg. May trace rays and shadow rays.

func (*ShaderStd) EvalEmission

func (sh *ShaderStd) EvalEmission(sg *core.ShaderContext, omegaO m.Vec3) colour.RGB

EvalEmission implements core.Shader.

func (*ShaderStd) Name

func (sh *ShaderStd) Name() string

Name is a core.Node method.

func (*ShaderStd) PostRender

func (sh *ShaderStd) PostRender() error

PostRender is a core.Node method.

func (*ShaderStd) PreRender

func (sh *ShaderStd) PreRender() error

PreRender is a core.Node method.