Cleanup resourceless_software_draw()

cc/layers/picture_layer_impl_unittest.cc

 // Copyright 2013 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/layers/picture_layer_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <set>
 #include <utility>
@@ skipping 397 matching lines @@
   tilings = active_layer_->tilings();
   for (size_t i = 0; i < tilings->num_tilings(); i++) {
     PictureLayerTiling* tiling = tilings->tiling_at(i);
     EXPECT_EQ(
         tiling->GetCurrentVisibleRectForTesting(),
         gfx::ScaleToEnclosingRect(viewport_rect_for_tile_priority_in_view_space,
                                   tiling->contents_scale()));
   }
 }
 
-TEST_F(PictureLayerImplTest, InvalidViewportForPrioritizingTiles) {
+TEST_F(PictureLayerImplTest,
+       ResourcelessSoftwareDrawHasValidViewportForTilePriority) {
   base::TimeTicks time_ticks;
   time_ticks += base::TimeDelta::FromMilliseconds(1);
   host_impl_.SetCurrentBeginFrameArgs(
       CreateBeginFrameArgsForTesting(time_ticks));
 
   gfx::Size tile_size(100, 100);
   gfx::Size layer_bounds(400, 400);
 
   scoped_refptr<FakePicturePileImpl> pending_pile =
       FakePicturePileImpl::CreateFilledPile(tile_size, layer_bounds);
   scoped_refptr<FakePicturePileImpl> active_pile =
       FakePicturePileImpl::CreateFilledPile(tile_size, layer_bounds);
 
   SetupTrees(pending_pile, active_pile);
 
   Region invalidation;
   AddDefaultTilingsWithInvalidation(invalidation);
   SetupDrawPropertiesAndUpdateTiles(active_layer_, 1.f, 1.f, 1.f, 1.f, false);
 
   // UpdateTiles with valid viewport. Should update tile viewport.
-  // Note viewport is considered invalid if and only if in resourceless
-  // software draw.
   bool resourceless_software_draw = false;
   gfx::Rect viewport = gfx::Rect(layer_bounds);
   gfx::Transform transform;
   host_impl_.SetExternalDrawConstraints(transform,
                                         viewport,
                                         viewport,
                                         viewport,
                                         transform,
                                         resourceless_software_draw);
   active_layer_->draw_properties().visible_content_rect = viewport;
   active_layer_->draw_properties().screen_space_transform = transform;
   active_layer_->UpdateTiles(NULL);
 
   gfx::Rect visible_rect_for_tile_priority =
       active_layer_->visible_rect_for_tile_priority();
   EXPECT_FALSE(visible_rect_for_tile_priority.IsEmpty());
   gfx::Rect viewport_rect_for_tile_priority =
       active_layer_->viewport_rect_for_tile_priority();
   EXPECT_FALSE(viewport_rect_for_tile_priority.IsEmpty());
   gfx::Transform screen_space_transform_for_tile_priority =
       active_layer_->screen_space_transform_for_tile_priority();
 
-  // Expand viewport and set it as invalid for prioritizing tiles.
-  // Should not update tile viewport.
+  // PictureLayerImpl does not make a special case for
+  // resource_less_software_draw, so the tile viewport and matrix should be
+  // respeced.
   time_ticks += base::TimeDelta::FromMilliseconds(200);
   host_impl_.SetCurrentBeginFrameArgs(
       CreateBeginFrameArgsForTesting(time_ticks));
   resourceless_software_draw = true;
   viewport = gfx::ScaleToEnclosingRect(viewport, 2);
   transform.Translate(1.f, 1.f);
   active_layer_->draw_properties().visible_content_rect = viewport;
   active_layer_->draw_properties().screen_space_transform = transform;
   host_impl_.SetExternalDrawConstraints(transform,
                                         viewport,
                                         viewport,
                                         viewport,
                                         transform,
                                         resourceless_software_draw);
   active_layer_->UpdateTiles(NULL);
 
+  visible_rect_for_tile_priority =
+      gfx::ScaleToEnclosingRect(visible_rect_for_tile_priority, 2);
+  viewport_rect_for_tile_priority =
+      gfx::ScaleToEnclosingRect(viewport_rect_for_tile_priority, 2);
+  screen_space_transform_for_tile_priority = transform;
   EXPECT_RECT_EQ(visible_rect_for_tile_priority,
                  active_layer_->visible_rect_for_tile_priority());
   EXPECT_RECT_EQ(viewport_rect_for_tile_priority,
                  active_layer_->viewport_rect_for_tile_priority());
   EXPECT_TRANSFORMATION_MATRIX_EQ(
       screen_space_transform_for_tile_priority,
       active_layer_->screen_space_transform_for_tile_priority());
-
-  // Keep expanded viewport but mark it valid. Should update tile viewport.
-  time_ticks += base::TimeDelta::FromMilliseconds(200);
-  host_impl_.SetCurrentBeginFrameArgs(
-      CreateBeginFrameArgsForTesting(time_ticks));
-  resourceless_software_draw = false;
-  host_impl_.SetExternalDrawConstraints(transform,
-                                        viewport,
-                                        viewport,
-                                        viewport,
-                                        transform,
-                                        resourceless_software_draw);
-  active_layer_->UpdateTiles(NULL);
-
-  EXPECT_FALSE(visible_rect_for_tile_priority ==
-               active_layer_->visible_rect_for_tile_priority());
-  EXPECT_FALSE(viewport_rect_for_tile_priority ==
-               active_layer_->viewport_rect_for_tile_priority());
-  EXPECT_FALSE(screen_space_transform_for_tile_priority ==
-               active_layer_->screen_space_transform_for_tile_priority());
 }
 
 TEST_F(PictureLayerImplTest, InvalidViewportAfterReleaseResources) {
   gfx::Size tile_size(100, 100);
   gfx::Size layer_bounds(400, 400);
 
   scoped_refptr<FakePicturePileImpl> pending_pile =
       FakePicturePileImpl::CreateFilledPile(tile_size, layer_bounds);
   scoped_refptr<FakePicturePileImpl> active_pile =
       FakePicturePileImpl::CreateFilledPile(tile_size, layer_bounds);
@@ skipping 2518 matching lines @@
   EXPECT_EQ(active_layer_->HighResTiling()->AllTilesForTesting().size(), 0u);
 
   // Since the active layer has no tiles at all, the pending layer doesn't
   // need content in order to activate.
   pending_layer_->MarkVisibleResourcesAsRequired();
   AssertNoTilesRequired(pending_layer_->HighResTiling());
   if (host_impl_.settings().create_low_res_tiling)
     AssertNoTilesRequired(pending_layer_->LowResTiling());
 }
 
-TEST_F(NoLowResPictureLayerImplTest, InvalidViewportForPrioritizingTiles) {
+TEST_F(NoLowResPictureLayerImplTest,
+       ResourcelessSoftwareDrawHasValidViewportForTilePriority) {
   base::TimeTicks time_ticks;
   time_ticks += base::TimeDelta::FromMilliseconds(1);
   host_impl_.SetCurrentBeginFrameArgs(
       CreateBeginFrameArgsForTesting(time_ticks));
 
   gfx::Size tile_size(100, 100);
   gfx::Size layer_bounds(400, 400);
 
   scoped_refptr<FakePicturePileImpl> pending_pile =
       FakePicturePileImpl::CreateFilledPile(tile_size, layer_bounds);
   scoped_refptr<FakePicturePileImpl> active_pile =
       FakePicturePileImpl::CreateFilledPile(tile_size, layer_bounds);
 
   SetupTrees(pending_pile, active_pile);
 
   Region invalidation;
   AddDefaultTilingsWithInvalidation(invalidation);
   SetupDrawPropertiesAndUpdateTiles(active_layer_, 1.f, 1.f, 1.f, 1.f, false);
 
   // UpdateTiles with valid viewport. Should update tile viewport.
-  // Note viewport is considered invalid if and only if in resourceless
-  // software draw.
   bool resourceless_software_draw = false;
   gfx::Rect viewport = gfx::Rect(layer_bounds);
   gfx::Transform transform;
   host_impl_.SetExternalDrawConstraints(transform,
                                         viewport,
                                         viewport,
                                         viewport,
                                         transform,
                                         resourceless_software_draw);
   active_layer_->draw_properties().visible_content_rect = viewport;
   active_layer_->draw_properties().screen_space_transform = transform;
   active_layer_->UpdateTiles(NULL);
 
   gfx::Rect visible_rect_for_tile_priority =
       active_layer_->visible_rect_for_tile_priority();
   EXPECT_FALSE(visible_rect_for_tile_priority.IsEmpty());
   gfx::Rect viewport_rect_for_tile_priority =
       active_layer_->viewport_rect_for_tile_priority();
   EXPECT_FALSE(viewport_rect_for_tile_priority.IsEmpty());
   gfx::Transform screen_space_transform_for_tile_priority =
       active_layer_->screen_space_transform_for_tile_priority();
 
-  // Expand viewport and set it as invalid for prioritizing tiles.
-  // Should not update tile viewport.
+  // PictureLayerImpl does not make a special case for
+  // resource_less_software_draw, so the tile viewport and matrix should be
+  // respeced.
   time_ticks += base::TimeDelta::FromMilliseconds(200);
   host_impl_.SetCurrentBeginFrameArgs(
       CreateBeginFrameArgsForTesting(time_ticks));
   resourceless_software_draw = true;
   viewport = gfx::ScaleToEnclosingRect(viewport, 2);
   transform.Translate(1.f, 1.f);
   active_layer_->draw_properties().visible_content_rect = viewport;
   active_layer_->draw_properties().screen_space_transform = transform;
   host_impl_.SetExternalDrawConstraints(transform,
                                         viewport,
                                         viewport,
                                         viewport,
                                         transform,
                                         resourceless_software_draw);
   active_layer_->UpdateTiles(NULL);
 
+  visible_rect_for_tile_priority =
+      gfx::ScaleToEnclosingRect(visible_rect_for_tile_priority, 2);
+  viewport_rect_for_tile_priority =
+      gfx::ScaleToEnclosingRect(viewport_rect_for_tile_priority, 2);
+  screen_space_transform_for_tile_priority = transform;
+
   EXPECT_RECT_EQ(visible_rect_for_tile_priority,
                  active_layer_->visible_rect_for_tile_priority());
   EXPECT_RECT_EQ(viewport_rect_for_tile_priority,
                  active_layer_->viewport_rect_for_tile_priority());
   EXPECT_TRANSFORMATION_MATRIX_EQ(
       screen_space_transform_for_tile_priority,
       active_layer_->screen_space_transform_for_tile_priority());
-
-  // Keep expanded viewport but mark it valid. Should update tile viewport.
-  time_ticks += base::TimeDelta::FromMilliseconds(200);
-  host_impl_.SetCurrentBeginFrameArgs(
-      CreateBeginFrameArgsForTesting(time_ticks));
-  resourceless_software_draw = false;
-  host_impl_.SetExternalDrawConstraints(transform,
-                                        viewport,
-                                        viewport,
-                                        viewport,
-                                        transform,
-                                        resourceless_software_draw);
-  active_layer_->UpdateTiles(NULL);
-
-  EXPECT_FALSE(visible_rect_for_tile_priority ==
-               active_layer_->visible_rect_for_tile_priority());
-  EXPECT_FALSE(viewport_rect_for_tile_priority ==
-               active_layer_->viewport_rect_for_tile_priority());
-  EXPECT_FALSE(screen_space_transform_for_tile_priority ==
-               active_layer_->screen_space_transform_for_tile_priority());
 }
 
 TEST_F(NoLowResPictureLayerImplTest, InvalidViewportAfterReleaseResources) {
   gfx::Size tile_size(100, 100);
   gfx::Size layer_bounds(400, 400);
 
   scoped_refptr<FakePicturePileImpl> pending_pile =
       FakePicturePileImpl::CreateFilledPile(tile_size, layer_bounds);
   scoped_refptr<FakePicturePileImpl> active_pile =
       FakePicturePileImpl::CreateFilledPile(tile_size, layer_bounds);
@@ skipping 1026 matching lines @@
   ActivateTree();
   EXPECT_TRUE(active_layer_->GetRecycledTwinLayer());
   EXPECT_EQ(old_pending_layer_, active_layer_->GetRecycledTwinLayer());
 
   host_impl_.ResetRecycleTreeForTesting();
   EXPECT_FALSE(active_layer_->GetRecycledTwinLayer());
 }
 
 }  // namespace
 }  // namespace cc