cc/quads/largest_draw_quad.cc

// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "cc/quads/largest_draw_quad.h"

#include <stddef.h>

#include <algorithm>

#include "cc/quads/debug_border_draw_quad.h"
#include "cc/quads/picture_draw_quad.h"
#include "cc/quads/render_pass_draw_quad.h"
#include "cc/quads/solid_color_draw_quad.h"
#include "cc/quads/stream_video_draw_quad.h"
#include "cc/quads/surface_draw_quad.h"
#include "cc/quads/texture_draw_quad.h"
#include "cc/quads/tile_draw_quad.h"
#include "cc/quads/yuv_video_draw_quad.h"

namespace {
template <typename...>
struct MaxSize {};
template <class T, class... Args>
struct MaxSize<T, Args...> {
  static const size_t value = sizeof(T) > MaxSize<Args...>::value
                                  ? sizeof(T)
                                  : MaxSize<Args...>::value;
};
template <>
struct MaxSize<> {
  static const size_t value = 0;
};

const size_t kLargestDrawQuadSize = MaxSize<cc::DebugBorderDrawQuad,
                                            cc::PictureDrawQuad,
                                            cc::RenderPassDrawQuad,
                                            cc::SolidColorDrawQuad,
                                            cc::StreamVideoDrawQuad,
                                            cc::SurfaceDrawQuad,
                                            cc::TextureDrawQuad,
                                            cc::TileDrawQuad,
                                            cc::YUVVideoDrawQuad>::value;

}  // namespace

namespace cc {

size_t LargestDrawQuadSize() {
  return kLargestDrawQuadSize;
}

}  // namespace cc