renderer

Documentation

Overview

Package renderer implements the scene renderer.

Index

• type ProgSpecs
• type Renderer
  • func NewRenderer(gs *gls.GLS) *Renderer
  • func (r *Renderer) AddChunk(name, source string)
  • func (r *Renderer) AddDefaultShaders() error
  • func (r *Renderer) AddProgram(name, vertex, frag string, others ...string)
  • func (r *Renderer) AddShader(name, source string)
  • func (r *Renderer) Render(iscene core.INode, icam camera.ICamera) error
• type ShaderSpecs
  • func (ss *ShaderSpecs) Compare(other *ShaderSpecs) bool
• type Shaman
  • func NewShaman(gs *gls.GLS) *Shaman
  • func (sm *Shaman) AddChunk(name, source string)
  • func (sm *Shaman) AddDefaultShaders() error
  • func (sm *Shaman) AddProgram(name, vertexName, fragName string, others ...string)
  • func (sm *Shaman) AddShader(name, source string)
  • func (sm *Shaman) GenProgram(specs *ShaderSpecs) (*gls.Program, error)
  • func (sm *Shaman) Init(gs *gls.GLS)
  • func (sm *Shaman) SetProgram(s *ShaderSpecs) (bool, error)

Types

type ProgSpecs

type ProgSpecs struct {
	// contains filtered or unexported fields
}

type Renderer

type Renderer struct {
	// contains filtered or unexported fields
}

func NewRenderer

func NewRenderer(gs *gls.GLS) *Renderer

func (*Renderer) AddChunk

func (r *Renderer) AddChunk(name, source string)

func (*Renderer) AddDefaultShaders

func (r *Renderer) AddDefaultShaders() error

func (*Renderer) AddProgram

func (r *Renderer) AddProgram(name, vertex, frag string, others ...string)

func (*Renderer) AddShader

func (r *Renderer) AddShader(name, source string)

func (*Renderer) Render

func (r *Renderer) Render(iscene core.INode, icam camera.ICamera) error

type ShaderSpecs

type ShaderSpecs struct {
	Name             string             // Shader name
	Version          string             // GLSL version
	ShaderUnique     bool               // indicates if shader is independent of lights and textures
	UseLights        material.UseLights // Bitmask indicating which lights to consider
	AmbientLightsMax int                // Current number of ambient lights
	DirLightsMax     int                // Current Number of directional lights
	PointLightsMax   int                // Current Number of point lights
	SpotLightsMax    int                // Current Number of spot lights
	MatTexturesMax   int                // Current Number of material textures
}

ShaderSpecs describes the specification of a compiled shader program

func (*ShaderSpecs) Compare

func (ss *ShaderSpecs) Compare(other *ShaderSpecs) bool

Compare compares two shaders specifications structures

type Shaman

type Shaman struct {
	// contains filtered or unexported fields
}

func NewShaman

func NewShaman(gs *gls.GLS) *Shaman

NewShaman creates and returns a pointer to a new shader manager

func (*Shaman) AddChunk

func (sm *Shaman) AddChunk(name, source string)

AddChunk adds a shader chunk with the specified name and source code

func (*Shaman) AddDefaultShaders

func (sm *Shaman) AddDefaultShaders() error

AddDefaultShaders adds to this shader manager all default include chunks, shaders and programs statically registered.

func (*Shaman) AddProgram

func (sm *Shaman) AddProgram(name, vertexName, fragName string, others ...string)

AddProgram adds a program with the specified name and associated vertex and fragment shaders names (previously registered)

func (*Shaman) AddShader

func (sm *Shaman) AddShader(name, source string)

AddShader adds a shader program with the specified name and source code

func (*Shaman) GenProgram

func (sm *Shaman) GenProgram(specs *ShaderSpecs) (*gls.Program, error)

Generates shader program from the specified specs

func (*Shaman) Init

func (sm *Shaman) Init(gs *gls.GLS)

Init initializes the shader manager

func (*Shaman) SetProgram

func (sm *Shaman) SetProgram(s *ShaderSpecs) (bool, error)

SetProgram set the shader program to satisfy the specified specs. Returns an indication if the current shader has changed and a possible error when creating a new shader program. Receives a copy of the specs because it changes the fields which specify the number of lights depending on the UseLights flags.