copyFramebufferToTexture method

void copyFramebufferToTexture(
  1. Vector? position,
  2. Texture? texture, {
  3. int level = 0,
})

Implementation

void copyFramebufferToTexture(Vector? position, Texture? texture, {int level = 0}) {
  //console.warning('copyFramebufferToTexture not supported');
  if (texture is! FramebufferTexture) {
    console.warning('WebGLRenderer: copyFramebufferToTexture() can only be used with FramebufferTexture.');
    return;
  }

  final levelScale = math.pow(2, -level);
  final width = (texture.image.width * levelScale).floor();
  final height = (texture.image.height * levelScale).floor();

  final x = position != null ? position.x.toInt() : 0;
  final y = position != null ? position.y.toInt() : 0;

  textures.setTexture2D(texture, 0);
  _gl.copyTexSubImage2D(WebGL.TEXTURE_2D, level, 0, 0, x, y, width, height);
  state.unbindTexture(WebGLTexture(WebGL.TEXTURE_2D));
}