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1 // Copyright 2011 The Chromium Authors. All rights reserved. | 1 // Copyright 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "cc/trees/layer_tree_host_common.h" | 5 #include "cc/trees/layer_tree_host_common.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 | 8 |
9 #include "base/debug/trace_event.h" | 9 #include "base/debug/trace_event.h" |
10 #include "cc/base/math_util.h" | 10 #include "cc/base/math_util.h" |
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569 if (LayerIsInExisting3DRenderingContext(layer) && !layer->preserves_3d() && | 569 if (LayerIsInExisting3DRenderingContext(layer) && !layer->preserves_3d() && |
570 num_descendants_that_draw_content > 0) { | 570 num_descendants_that_draw_content > 0) { |
571 TRACE_EVENT_INSTANT0( | 571 TRACE_EVENT_INSTANT0( |
572 "cc", | 572 "cc", |
573 "LayerTreeHostCommon::SubtreeShouldRenderToSeparateSurface flattening", | 573 "LayerTreeHostCommon::SubtreeShouldRenderToSeparateSurface flattening", |
574 TRACE_EVENT_SCOPE_THREAD); | 574 TRACE_EVENT_SCOPE_THREAD); |
575 DCHECK(!is_root); | 575 DCHECK(!is_root); |
576 return true; | 576 return true; |
577 } | 577 } |
578 | 578 |
579 // If the layer has blending. | |
580 if (layer->has_blend_mode()) { | |
shawnsingh
2013/09/25 05:33:53
Can we support blend modes for layers when possibl
rosca
2013/09/25 18:00:00
This is one of the optimizations I was thinking of
| |
581 TRACE_EVENT_INSTANT0( | |
582 "cc", | |
583 "LayerTreeHostCommon::SubtreeShouldRenderToSeparateSurface blending", | |
584 TRACE_EVENT_SCOPE_THREAD); | |
585 return true; | |
586 } | |
587 | |
588 // If the layer has isolation. | |
589 if (layer->is_root_for_isolated_group()) { | |
enne (OOO)
2013/09/24 18:05:48
Whoa there. According to http://dev.w3.org/fxtf/c
rosca
2013/09/24 21:22:47
We create separate rendering surfaces only for sta
shawnsingh
2013/09/25 05:33:53
Enne@ - I disagree about using setForceRenderSurfa
enne (OOO)
2013/09/26 16:25:13
I think there's sort of two approaches you can tak
rosca
2013/09/27 10:39:06
I added a TODO comment with this improvement in th
enne (OOO)
2013/09/27 17:42:33
Can you file a bug, assign it to yourself, and ref
rosca
2013/09/30 17:28:36
Here is the bug: http://crbug.com/301738. Unfortun
| |
590 TRACE_EVENT_INSTANT0( | |
591 "cc", | |
592 "LayerTreeHostCommon::SubtreeShouldRenderToSeparateSurface isolation", | |
593 TRACE_EVENT_SCOPE_THREAD); | |
594 return true; | |
595 } | |
596 | |
579 // If the layer clips its descendants but it is not axis-aligned with respect | 597 // If the layer clips its descendants but it is not axis-aligned with respect |
580 // to its parent. | 598 // to its parent. |
581 bool layer_clips_external_content = | 599 bool layer_clips_external_content = |
582 LayerClipsSubtree(layer) || layer->HasDelegatedContent(); | 600 LayerClipsSubtree(layer) || layer->HasDelegatedContent(); |
583 if (layer_clips_external_content && !axis_aligned_with_respect_to_parent && | 601 if (layer_clips_external_content && !axis_aligned_with_respect_to_parent && |
584 !layer->draw_properties().descendants_can_clip_selves) { | 602 !layer->draw_properties().descendants_can_clip_selves) { |
585 TRACE_EVENT_INSTANT0( | 603 TRACE_EVENT_INSTANT0( |
586 "cc", | 604 "cc", |
587 "LayerTreeHostCommon::SubtreeShouldRenderToSeparateSurface clipping", | 605 "LayerTreeHostCommon::SubtreeShouldRenderToSeparateSurface clipping", |
588 TRACE_EVENT_SCOPE_THREAD); | 606 TRACE_EVENT_SCOPE_THREAD); |
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1507 // The opacity value is moved from the layer to its surface, so that the | 1525 // The opacity value is moved from the layer to its surface, so that the |
1508 // entire subtree properly inherits opacity. | 1526 // entire subtree properly inherits opacity. |
1509 render_surface->SetDrawOpacity(accumulated_draw_opacity); | 1527 render_surface->SetDrawOpacity(accumulated_draw_opacity); |
1510 render_surface->SetDrawOpacityIsAnimating(animating_opacity_to_target); | 1528 render_surface->SetDrawOpacityIsAnimating(animating_opacity_to_target); |
1511 animating_opacity_to_target = false; | 1529 animating_opacity_to_target = false; |
1512 layer_draw_properties.opacity = 1.f; | 1530 layer_draw_properties.opacity = 1.f; |
1513 layer_draw_properties.opacity_is_animating = animating_opacity_to_target; | 1531 layer_draw_properties.opacity_is_animating = animating_opacity_to_target; |
1514 layer_draw_properties.screen_space_opacity_is_animating = | 1532 layer_draw_properties.screen_space_opacity_is_animating = |
1515 animating_opacity_to_screen; | 1533 animating_opacity_to_screen; |
1516 | 1534 |
1535 render_surface->SetHasBlendMode(layer->has_blend_mode()); | |
shawnsingh
2013/09/25 05:33:53
FYI, if we do add support for blend modes on layer
rosca
2013/09/25 18:00:00
I removed the has_blend_mode property from RenderS
| |
1536 | |
1517 render_surface->SetTargetSurfaceTransformsAreAnimating( | 1537 render_surface->SetTargetSurfaceTransformsAreAnimating( |
1518 animating_transform_to_target); | 1538 animating_transform_to_target); |
1519 render_surface->SetScreenSpaceTransformsAreAnimating( | 1539 render_surface->SetScreenSpaceTransformsAreAnimating( |
1520 animating_transform_to_screen); | 1540 animating_transform_to_screen); |
1521 animating_transform_to_target = false; | 1541 animating_transform_to_target = false; |
1522 layer_draw_properties.target_space_transform_is_animating = | 1542 layer_draw_properties.target_space_transform_is_animating = |
1523 animating_transform_to_target; | 1543 animating_transform_to_target; |
1524 layer_draw_properties.screen_space_transform_is_animating = | 1544 layer_draw_properties.screen_space_transform_is_animating = |
1525 animating_transform_to_screen; | 1545 animating_transform_to_screen; |
1526 | 1546 |
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2218 // At this point, we think the point does hit the touch event handler region | 2238 // At this point, we think the point does hit the touch event handler region |
2219 // on the layer, but we need to walk up the parents to ensure that the layer | 2239 // on the layer, but we need to walk up the parents to ensure that the layer |
2220 // was not clipped in such a way that the hit point actually should not hit | 2240 // was not clipped in such a way that the hit point actually should not hit |
2221 // the layer. | 2241 // the layer. |
2222 if (PointIsClippedBySurfaceOrClipRect(screen_space_point, layer_impl)) | 2242 if (PointIsClippedBySurfaceOrClipRect(screen_space_point, layer_impl)) |
2223 return false; | 2243 return false; |
2224 | 2244 |
2225 return true; | 2245 return true; |
2226 } | 2246 } |
2227 } // namespace cc | 2247 } // namespace cc |
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