setup method

void setup(Object3D object, Material material, WebGLProgram program, BufferGeometry geometry, BufferAttribute<NativeArray<num>>? index,)

Implementation

void setup(
  Object3D object,
  Material material,
  WebGLProgram program,
  BufferGeometry geometry,
  BufferAttribute? index,
) {
  bool updateBuffers = false;

  if (vaoAvailable) {
    var state = getBindingState(geometry, program, material);

    if (currentState != state) {
      currentState = state;
      bindVertexArrayObject(currentState["object"]);
    }

    updateBuffers = needsUpdate(object, geometry, program, index);
    // print("WebGLBindingStates.dart setup object: ${object}  updateBuffers: ${updateBuffers}  ");

    if (updateBuffers) saveCache(object, geometry, program, index);
  } else {
    var wireframe = (material.wireframe == true);

    if (currentState["geometry"] != geometry.id ||
        currentState["program"] != program.id ||
        currentState["wireframe"] != wireframe) {
      currentState["geometry"] = geometry.id;
      currentState["program"] = program.id;
      currentState["wireframe"] = wireframe;

      updateBuffers = true;
    }
  }

  if (index != null) {
    attributes.update(index, gl.ELEMENT_ARRAY_BUFFER);
  }

  if (updateBuffers || forceUpdate) {
    forceUpdate = false;

    setupVertexAttributes(object, material, program, geometry);

    if (index != null) {
      var _buffer = attributes.get(index)["buffer"];
      gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, _buffer);
    }
  }
}