deleteTexture method

Implementation

Future<void> deleteTexture(FlutterAngleTexture texture,[bool releaseAll = true]) async {
  if (Platform.isAndroid) {
    return;
  }
  else if(Platform.isLinux){
    _libEGL!.makeCurrent(_baseAppContext);
  }

  if(_useSurface && texture.surfaceId != nullptr){
    _libEGL!.eglMakeCurrent(_display, texture.surfaceId!, texture.surfaceId!, _baseAppContext);
    _libEGL!.eglDestroySurface(_display, texture.surfaceId!);
    texture.surfaceId = nullptr;
  }

  angleConsole.warning('There is no active FlutterGL Texture to delete');
  if (_activeFramebuffer == texture.fboId && releaseAll) {
    _rawOpenGl.glBindFramebuffer(GL_FRAMEBUFFER, texture.fboId);
    if (!_isRBO) _rawOpenGl.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,GL_TEXTURE_2D, 0, 0); //unbind texutre
    else _rawOpenGl.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, 0); //unbind colorbutter
    _rawOpenGl.glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, 0); //unbind depth buffer
    _rawOpenGl.glBindFramebuffer(GL_FRAMEBUFFER, 0);

    _rawOpenGl.glClearColor(0.0, 0.0, 0.0, 0.0);
    _rawOpenGl.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);

    Pointer<Uint32> fbo = calloc();
    fbo.value = texture.fboId;
    _rawOpenGl.glDeleteBuffers(1, fbo);
    calloc.free(fbo);
    _activeFramebuffer = null;

    Pointer<Uint32> depth = calloc();
    depth.value = texture.depth;
    _rawOpenGl.glDeleteRenderbuffers(1, depth);
    calloc.free(depth);
  }

  if(releaseAll) await _channel.invokeMethod('deleteTexture',{"textureId": texture.textureId});
}