gl 1.0.0

OpenGL/EGL FFI bindings for Dart

OpenGL ES 2.0 + EGL bindings for Dart

High-level wrapper over raw ffigen-generated EGL/GLES2 bindings. Manages all FFI memory allocation internally — no manual calloc/free.

Usage

import 'package:gl/gl.dart';

final gl = GL.create(width: 800, height: 600);
gl.clearColor(0.1, 0.1, 0.15, 1.0);
gl.clear();

// Shaders
final vs = Shader.vertex('attribute vec2 aPos; void main() { ... }');
final fs = Shader.fragment('precision mediump float; void main() { ... }');
final prog = Program()..attach(vs)..attach(fs)..link()..use();
final aPos = prog.getAttribLocation('aPos');

// Vertex buffer
final vbo = VertexBuffer()
  ..setData(Float32List.fromList([-0.5, -0.5, 0.5, -0.5, 0.0, 0.5]))
  ..attribPointer(aPos, 2, GL_FLOAT, false, 0, 0)
  ..enable(aPos)
  ..drawArrays(GL_TRIANGLES, 0, 3);

// Read pixels back
final pixels = gl.readPixelsAll(); // Uint8List RGBA

gl.dispose();

Classes

Class	Description
GL	EGL context + GLES2 state management, uniform setters, pixel readback
Shader	Compile vertex/fragment shaders with error checking
Program	Link shader programs, attribute/uniform location lookup
VertexBuffer	GPU buffer with setData, attribPointer, drawArrays
Texture	RGBA texture upload from pixel data (with nearest/linear filtering)
EglConfig	Framebuffer format config (bits, depth, stencil, samples)

Constants

Common GL constants (GL_TRIANGLES, GL_FLOAT, GL_BLEND, GL_RGBA, etc.) are exported as top-level int constants.

Low-level EGL and GLES2 classes with raw FFI function pointers are also exported for advanced use cases.

Install

dependencies:
  gl: ^1.0.0