renderer

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

type Environment interface {
	// Sources should return the shader sources mapped by their pipeline stage.
	// Multiple shader sources are combined per stage.
	Sources() (map[Stage][]Source, error)

	// Setup may be used to initialize any OpenGL state before the first frame
	// is rendered.
	Setup(state RenderState) error

	// SubEnvironments returns a set of environments which render output is
	// required in this environment.
	//
	// The implementing environment is not required to retain any state of the
	// environments returned.
	SubEnvironments() (map[string]SubEnvironment, error)

	// PreRender updates the program's uniform values for each next frame.
	//
	// sinceStart is the animation time elapsed since the first frame was
	// rendered.
	PreRender(state RenderState)

	// Close should shut down the environment by freeing all associated
	// (OpenGL) resources.
	Close() error
}

type GLDebugMessage struct {
	ID       uint32
	Source   uint32
	Type     uint32
	Severity uint32
	Message  string
	Stack    string
}

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

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

type OpenGLVersion int

type RenderState struct {
	Time            time.Duration
	Interval        time.Duration
	FramesProcessed uint64

	CanvasWidth  uint
	CanvasHeight uint

	Uniforms           map[string]Uniform
	PreviousFrameTexID func() uint32

	// SubBuffers contains the render output for each environment returned by
	// SubEnvironments as a textureID.
	SubBuffers map[string]uint32
}

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

type Source interface {
	// Contents reads the contents of the source file.
	Contents() ([]byte, error)
	// Dir returns the parent directory the file is located in.
	Dir() string
}

type SourceBuf string

type SourceFile struct {
	Filename string
}

type Stage string

type SubEnvironment struct {
	Environment
	Width, Height uint
}

type Uniform struct {
	Name     string
	Type     uint32
	Location int32
}