texture_rgba_renderer 0.0.4

A texture helper which brings a high level api to handle RGBA data.

Texture Rgba Renderer

A texture helper which brings a high level api to handle RGBA data. No frame copy required, and with full hardware acceleration.

Platform Support

The plugin aims to provide opengl impl for the texture, which bring a better performance instead of FFI + CustomPainter.

• ✅ Linux
• ✅ Windows (No gpu acceleration yet due to the limitation of Flutter.)

// The available texture variants.
// Only PixelBufferTexture is currently implemented.
// Other variants are expected to be added in the future.
typedef std::variant<PixelBufferTexture, GpuSurfaceTexture> TextureVariant;

• ❌ MacOS (not implemented yet.)

Getting Started

Create a texture by calling createTexture.

_textureRgbaRendererPlugin.createTexture(key).then((textureId) {
      if (textureId != -1) {
        debugPrint("Texture register success, textureId=$textureId");
        setState(() {
          this.textureId = textureId;
        });
      } else {
        return;
      }
    });

Transfer rgba data by calling onRgba.

data = mockPicture(width, height);
final res = await _textureRgbaRendererPlugin.onRgba(key, data!, height, width);
if (!res) {
    debugPrint("WARN: render failed");
}

Close a texture by calling closeTexture.

if (key != -1) {
    _textureRgbaRendererPlugin.closeTexture(key);
}

Check the example for details.

API

class TextureRgbaRenderer {

  /// Create a texture with unique identifier [key].
  /// 
  /// @return a texture id which can be used with
  /// ```dart
  /// Texture(textureId: textureId)
  /// ```
  Future<int> createTexture(int key) {
    return TextureRgbaRendererPlatform.instance.createTexture(key); 
  }

  /// Close a texture with unique identifier [key].
  /// 
  /// @return a boolean to indicate whether the operation is sucessfully executed.
  Future<bool> closeTexture(int key) {
    return TextureRgbaRendererPlatform.instance.closeTexture(key); 
  }

  /// Provide the rgba data to the texture.
  Future<bool> onRgba(int key, Uint8List data, int height, int width) {
     return TextureRgbaRendererPlatform.instance.onRgba(key, data, height, width); 
  }
}

Thanks

• Flutter
• Dart VLC

License