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1 // Copyright 2012 The Chromium Authors. All rights reserved. | 1 // Copyright 2012 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/occlusion_tracker.h" | 5 #include "cc/trees/occlusion_tracker.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 | 8 |
9 #include "cc/base/math_util.h" | 9 #include "cc/base/math_util.h" |
10 #include "cc/debug/overdraw_metrics.h" | 10 #include "cc/debug/overdraw_metrics.h" |
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217 | 217 |
218 RenderSurfaceType* surface = finished_target->render_surface(); | 218 RenderSurfaceType* surface = finished_target->render_surface(); |
219 | 219 |
220 // Readbacks always happen on render targets so we only need to check | 220 // Readbacks always happen on render targets so we only need to check |
221 // for readbacks here. | 221 // for readbacks here. |
222 bool target_is_only_for_copy_request = | 222 bool target_is_only_for_copy_request = |
223 finished_target->HasCopyRequest() && LayerIsHidden(finished_target); | 223 finished_target->HasCopyRequest() && LayerIsHidden(finished_target); |
224 | 224 |
225 // If the occlusion within the surface can not be applied to things outside of | 225 // If the occlusion within the surface can not be applied to things outside of |
226 // the surface's subtree, then clear the occlusion here so it won't be used. | 226 // the surface's subtree, then clear the occlusion here so it won't be used. |
227 if (finished_target->mask_layer() || | 227 if (finished_target->mask_layer() || !SurfaceOpacityKnown(surface) || |
228 !SurfaceOpacityKnown(surface) || | |
229 surface->draw_opacity() < 1 || | 228 surface->draw_opacity() < 1 || |
| 229 !finished_target->uses_default_blend_mode() || |
230 target_is_only_for_copy_request || | 230 target_is_only_for_copy_request || |
231 finished_target->filters().HasFilterThatAffectsOpacity()) { | 231 finished_target->filters().HasFilterThatAffectsOpacity()) { |
232 stack_.back().occlusion_from_outside_target.Clear(); | 232 stack_.back().occlusion_from_outside_target.Clear(); |
233 stack_.back().occlusion_from_inside_target.Clear(); | 233 stack_.back().occlusion_from_inside_target.Clear(); |
234 } else if (!SurfaceTransformsToTargetKnown(surface)) { | 234 } else if (!SurfaceTransformsToTargetKnown(surface)) { |
235 stack_.back().occlusion_from_inside_target.Clear(); | 235 stack_.back().occlusion_from_inside_target.Clear(); |
236 stack_.back().occlusion_from_outside_target.Clear(); | 236 stack_.back().occlusion_from_outside_target.Clear(); |
237 } | 237 } |
238 } | 238 } |
239 | 239 |
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398 DCHECK_EQ(layer->render_target(), stack_.back().target); | 398 DCHECK_EQ(layer->render_target(), stack_.back().target); |
399 if (stack_.empty()) | 399 if (stack_.empty()) |
400 return; | 400 return; |
401 | 401 |
402 if (!layer->DrawsContent()) | 402 if (!layer->DrawsContent()) |
403 return; | 403 return; |
404 | 404 |
405 if (!LayerOpacityKnown(layer) || layer->draw_opacity() < 1) | 405 if (!LayerOpacityKnown(layer) || layer->draw_opacity() < 1) |
406 return; | 406 return; |
407 | 407 |
| 408 if (!layer->uses_default_blend_mode()) |
| 409 return; |
| 410 |
408 if (LayerIsInUnsorted3dRenderingContext(layer)) | 411 if (LayerIsInUnsorted3dRenderingContext(layer)) |
409 return; | 412 return; |
410 | 413 |
411 if (!LayerTransformsToTargetKnown(layer)) | 414 if (!LayerTransformsToTargetKnown(layer)) |
412 return; | 415 return; |
413 | 416 |
414 Region opaque_contents = layer->VisibleContentOpaqueRegion(); | 417 Region opaque_contents = layer->VisibleContentOpaqueRegion(); |
415 if (opaque_contents.IsEmpty()) | 418 if (opaque_contents.IsEmpty()) |
416 return; | 419 return; |
417 | 420 |
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660 unoccluded_rect.Intersect(content_rect); | 663 unoccluded_rect.Intersect(content_rect); |
661 | 664 |
662 return unoccluded_rect; | 665 return unoccluded_rect; |
663 } | 666 } |
664 | 667 |
665 // Instantiate (and export) templates here for the linker. | 668 // Instantiate (and export) templates here for the linker. |
666 template class OcclusionTrackerBase<Layer, RenderSurface>; | 669 template class OcclusionTrackerBase<Layer, RenderSurface>; |
667 template class OcclusionTrackerBase<LayerImpl, RenderSurfaceImpl>; | 670 template class OcclusionTrackerBase<LayerImpl, RenderSurfaceImpl>; |
668 | 671 |
669 } // namespace cc | 672 } // namespace cc |
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