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/checkerboard_draw_quad.h"
  10 #include "cc/quads/debug_border_draw_quad.h"
  11 #include "cc/quads/io_surface_draw_quad.h"
  12 #include "cc/quads/picture_draw_quad.h"
  13 #include "cc/quads/render_pass_draw_quad.h"
  14 #include "cc/quads/solid_color_draw_quad.h"
  15 #include "cc/quads/stream_video_draw_quad.h"
  16 #include "cc/quads/surface_draw_quad.h"
  17 #include "cc/quads/texture_draw_quad.h"
  18 #include "cc/quads/tile_draw_quad.h"
  19 #include "cc/quads/yuv_video_draw_quad.h"
  20
  21 namespace {
  22 const size_t kLargestDrawQuadSize =
  23     sizeof(cc::RenderPassDrawQuad) > sizeof(cc::StreamVideoDrawQuad)
  24         ? sizeof(cc::RenderPassDrawQuad)
  25         : sizeof(cc::StreamVideoDrawQuad);
  26 }  // namespace
  27
  28 namespace cc {
  29
  30 size_t LargestDrawQuadSize() {
  31   // Currently the largest quad is either a RenderPassDrawQuad or a
  32   // StreamVideoDrawQuad depends on hardware structure.
  33
  34   // Use compile assert to make sure largest is actually larger than all other
  35   // type of draw quads.
  36   static_assert(sizeof(CheckerboardDrawQuad) <= kLargestDrawQuadSize,
  37                 "Largest Draw Quad size needs update. CheckerboardDrawQuad is "
  38                 "currently largest.");
  39   static_assert(sizeof(DebugBorderDrawQuad) <= kLargestDrawQuadSize,
  40                 "Largest Draw Quad size needs update. DebugBorderDrawQuad is "
  41                 "currently largest.");
  42   static_assert(sizeof(IOSurfaceDrawQuad) <= kLargestDrawQuadSize,
  43                 "Largest Draw Quad size needs update. IOSurfaceDrawQuad is "
  44                 "currently largest.");
  45   static_assert(sizeof(PictureDrawQuad) <= kLargestDrawQuadSize,
  46                 "Largest Draw Quad size needs update. PictureDrawQuad is "
  47                 "currently largest.");
  48   static_assert(sizeof(TextureDrawQuad) <= kLargestDrawQuadSize,
  49                 "Largest Draw Quad size needs update. TextureDrawQuad is "
  50                 "currently largest.");
  51   static_assert(sizeof(SolidColorDrawQuad) <= kLargestDrawQuadSize,
  52                 "Largest Draw Quad size needs update. SolidColorDrawQuad is "
  53                 "currently largest.");
  54   static_assert(sizeof(SurfaceDrawQuad) <= kLargestDrawQuadSize,
  55                 "Largest Draw Quad size needs update. SurfaceDrawQuad is "
  56                 "currently largest.");
  57   static_assert(sizeof(TileDrawQuad) <= kLargestDrawQuadSize,
  58                 "Largest Draw Quad size needs update. TileDrawQuad is "
  59                 "currently largest.");
  60   static_assert(sizeof(YUVVideoDrawQuad) <= kLargestDrawQuadSize,
  61                 "Largest Draw Quad size needs update. YUVVideoDrawQuad is "
  62                 "currently largest.");
  63
  64   return kLargestDrawQuadSize;
  65 }
  66
  67 }  // namespace cc