beginWithResetClear(stackId, r, g, b, a, stencilValue) {
    this.beginWithClear(r, g, b, a, stencilValue);
    RenderPass.push_to_reset_stack(this, stackId);
  }
Begins, clears, and resets projection / modelview matrices to the pass's matrices, i.e. position 0, 0 is now x, y in render pass space, not screen space.
@param [stackId = 0] id of stack this should reset onto (use this to organize redirected drawing by id)
@param [r = 0] red clear value from 0 to 255
@param [g = 0] green clear value from 0 to 255
@param [b = 0] blue clear value from 0 to 255
@param [a = 0] alpha clear value from 0 to 255
@param [stencilValue = 0x0]