cc/quads/largest_draw_quad.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/quads/largest_draw_quad.h"
   6
   7 #include <algorithm>
   8
   9 #include "cc/quads/debug_border_draw_quad.h"
  10 #include "cc/quads/io_surface_draw_quad.h"
  11 #include "cc/quads/picture_draw_quad.h"
  12 #include "cc/quads/render_pass_draw_quad.h"
  13 #include "cc/quads/solid_color_draw_quad.h"
  14 #include "cc/quads/stream_video_draw_quad.h"
  15 #include "cc/quads/surface_draw_quad.h"
  16 #include "cc/quads/texture_draw_quad.h"
  17 #include "cc/quads/tile_draw_quad.h"
  18 #include "cc/quads/yuv_video_draw_quad.h"
  19
  20 namespace {
  21 const size_t kLargestDrawQuadSize =
  22     sizeof(cc::RenderPassDrawQuad) > sizeof(cc::StreamVideoDrawQuad)
  23         ? sizeof(cc::RenderPassDrawQuad)
  24         : sizeof(cc::StreamVideoDrawQuad);
  25 }  // namespace
  26
  27 namespace cc {
  28
  29 size_t LargestDrawQuadSize() {
  30   // Currently the largest quad is either a RenderPassDrawQuad or a
  31   // StreamVideoDrawQuad depends on hardware structure.
  32
  33   // Use compile assert to make sure largest is actually larger than all other
  34   // type of draw quads.
  35   static_assert(sizeof(DebugBorderDrawQuad) <= kLargestDrawQuadSize,
  36                 "Largest Draw Quad size needs update. DebugBorderDrawQuad is "
  37                 "currently largest.");
  38   static_assert(sizeof(IOSurfaceDrawQuad) <= kLargestDrawQuadSize,
  39                 "Largest Draw Quad size needs update. IOSurfaceDrawQuad is "
  40                 "currently largest.");
  41   static_assert(sizeof(PictureDrawQuad) <= kLargestDrawQuadSize,
  42                 "Largest Draw Quad size needs update. PictureDrawQuad is "
  43                 "currently largest.");
  44   static_assert(sizeof(TextureDrawQuad) <= kLargestDrawQuadSize,
  45                 "Largest Draw Quad size needs update. TextureDrawQuad is "
  46                 "currently largest.");
  47   static_assert(sizeof(SolidColorDrawQuad) <= kLargestDrawQuadSize,
  48                 "Largest Draw Quad size needs update. SolidColorDrawQuad is "
  49                 "currently largest.");
  50   static_assert(sizeof(SurfaceDrawQuad) <= kLargestDrawQuadSize,
  51                 "Largest Draw Quad size needs update. SurfaceDrawQuad is "
  52                 "currently largest.");
  53   static_assert(sizeof(TileDrawQuad) <= kLargestDrawQuadSize,
  54                 "Largest Draw Quad size needs update. TileDrawQuad is "
  55                 "currently largest.");
  56   static_assert(sizeof(YUVVideoDrawQuad) <= kLargestDrawQuadSize,
  57                 "Largest Draw Quad size needs update. YUVVideoDrawQuad is "
  58                 "currently largest.");
  59
  60   return kLargestDrawQuadSize;
  61 }
  62
  63 }  // namespace cc