gl

package
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Published: May 25, 2023 License: BSD-3-Clause Imports: 15 Imported by: 0

Documentation

Overview

Package gl provides a full Fyne render implementation using system OpenGL libraries.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Attribute

type Attribute int32

Attribute represents a GL attribute

type Buffer

type Buffer uint32

Buffer represents a GL buffer

type Painter

type Painter interface {
	// Init tell a new painter to initialise, usually called after a context is available
	Init()
	// Capture requests that the specified canvas be drawn to an in-memory image
	Capture(fyne.Canvas) image.Image
	// Clear tells our painter to prepare a fresh paint
	Clear()
	// Free is used to indicate that a certain canvas object is no longer needed
	Free(fyne.CanvasObject)
	// Paint a single fyne.CanvasObject but not its children.
	Paint(fyne.CanvasObject, fyne.Position, fyne.Size)
	// SetFrameBufferScale tells us when we have more than 1 framebuffer pixel for each output pixel
	SetFrameBufferScale(float32)
	// SetOutputSize is used to change the resolution of our output viewport
	SetOutputSize(int, int)
	// StartClipping tells us that the following paint actions should be clipped to the specified area.
	StartClipping(fyne.Position, fyne.Size)
	// StopClipping stops clipping paint actions.
	StopClipping()
}

Painter defines the functionality of our OpenGL based renderer

func NewPainter

func NewPainter(c fyne.Canvas, ctx driver.WithContext) Painter

NewPainter creates a new GL based renderer for the provided canvas. If it is a master painter it will also initialise OpenGL

type Program

type Program uint32

Program represents a compiled GL program

type Shader

type Shader uint32

Shader represents a GL shader

type Texture

type Texture cache.TextureType

Texture represents an uploaded GL texture

type Uniform

type Uniform int32

Uniform represents a GL uniform

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