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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/layers/render_surface_impl.h" | 5 #include "cc/layers/render_surface_impl.h" |
6 | 6 |
7 #include <stddef.h> | 7 #include <stddef.h> |
8 | 8 |
9 #include <algorithm> | 9 #include <algorithm> |
10 | 10 |
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184 return; | 184 return; |
185 | 185 |
186 surface_property_changed_ = true; | 186 surface_property_changed_ = true; |
187 draw_properties_.content_rect = content_rect; | 187 draw_properties_.content_rect = content_rect; |
188 } | 188 } |
189 | 189 |
190 void RenderSurfaceImpl::SetContentRectForTesting(const gfx::Rect& rect) { | 190 void RenderSurfaceImpl::SetContentRectForTesting(const gfx::Rect& rect) { |
191 SetContentRect(rect); | 191 SetContentRect(rect); |
192 } | 192 } |
193 | 193 |
| 194 gfx::Rect RenderSurfaceImpl::CalculateExpandedClipForFilters( |
| 195 const gfx::Transform& target_to_surface) { |
| 196 gfx::Rect clip_in_surface_space = |
| 197 MathUtil::ProjectEnclosingClippedRect(target_to_surface, clip_rect()); |
| 198 gfx::Rect expanded_clip_in_surface_space = Filters().MapRectReverse( |
| 199 clip_in_surface_space, FiltersTransform().matrix()); |
| 200 gfx::Rect expanded_clip_in_target_space = MathUtil::MapEnclosingClippedRect( |
| 201 draw_transform(), expanded_clip_in_surface_space); |
| 202 return expanded_clip_in_target_space; |
| 203 } |
| 204 |
194 gfx::Rect RenderSurfaceImpl::CalculateClippedAccumulatedContentRect() { | 205 gfx::Rect RenderSurfaceImpl::CalculateClippedAccumulatedContentRect() { |
195 if (HasCopyRequest() || !is_clipped()) | 206 if (HasCopyRequest() || !is_clipped()) |
196 return accumulated_content_rect(); | 207 return accumulated_content_rect(); |
197 | 208 |
198 if (accumulated_content_rect().IsEmpty()) | 209 if (accumulated_content_rect().IsEmpty()) |
199 return gfx::Rect(); | 210 return gfx::Rect(); |
200 | 211 |
201 // Calculate projection from the target surface rect to local | 212 // Calculate projection from the target surface rect to local |
202 // space. Non-invertible draw transforms means no able to bring clipped rect | 213 // space. Non-invertible draw transforms means no able to bring clipped rect |
203 // in target space back to local space, early out without clip. | 214 // in target space back to local space, early out without clip. |
204 gfx::Transform target_to_surface(gfx::Transform::kSkipInitialization); | 215 gfx::Transform target_to_surface(gfx::Transform::kSkipInitialization); |
205 if (!draw_transform().GetInverse(&target_to_surface)) | 216 if (!draw_transform().GetInverse(&target_to_surface)) |
206 return accumulated_content_rect(); | 217 return accumulated_content_rect(); |
207 | 218 |
208 // Clip rect is in target space. Bring accumulated content rect to | 219 // Clip rect is in target space. Bring accumulated content rect to |
209 // target space in preparation for clipping. | 220 // target space in preparation for clipping. |
210 gfx::Rect accumulated_rect_in_target_space = | 221 gfx::Rect accumulated_rect_in_target_space = |
211 MathUtil::MapEnclosingClippedRect(draw_transform(), | 222 MathUtil::MapEnclosingClippedRect(draw_transform(), |
212 accumulated_content_rect()); | 223 accumulated_content_rect()); |
213 // If accumulated content rect is contained within clip rect, early out | 224 // If accumulated content rect is contained within clip rect, early out |
214 // without clipping. | 225 // without clipping. |
215 if (clip_rect().Contains(accumulated_rect_in_target_space)) | 226 if (clip_rect().Contains(accumulated_rect_in_target_space)) |
216 return accumulated_content_rect(); | 227 return accumulated_content_rect(); |
217 | 228 |
218 gfx::Rect clipped_accumulated_rect_in_target_space = clip_rect(); | 229 gfx::Rect clipped_accumulated_rect_in_target_space; |
| 230 if (Filters().HasFilterThatMovesPixels()) { |
| 231 clipped_accumulated_rect_in_target_space = |
| 232 CalculateExpandedClipForFilters(target_to_surface); |
| 233 } else { |
| 234 clipped_accumulated_rect_in_target_space = clip_rect(); |
| 235 } |
219 clipped_accumulated_rect_in_target_space.Intersect( | 236 clipped_accumulated_rect_in_target_space.Intersect( |
220 accumulated_rect_in_target_space); | 237 accumulated_rect_in_target_space); |
221 | 238 |
222 if (clipped_accumulated_rect_in_target_space.IsEmpty()) | 239 if (clipped_accumulated_rect_in_target_space.IsEmpty()) |
223 return gfx::Rect(); | 240 return gfx::Rect(); |
224 | 241 |
225 gfx::Rect clipped_accumulated_rect_in_local_space = | 242 gfx::Rect clipped_accumulated_rect_in_local_space = |
226 MathUtil::ProjectEnclosingClippedRect( | 243 MathUtil::ProjectEnclosingClippedRect( |
227 target_to_surface, clipped_accumulated_rect_in_target_space); | 244 target_to_surface, clipped_accumulated_rect_in_target_space); |
228 // Bringing clipped accumulated rect back to local space may result | 245 // Bringing clipped accumulated rect back to local space may result |
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396 | 413 |
397 RenderPassDrawQuad* quad = | 414 RenderPassDrawQuad* quad = |
398 render_pass->CreateAndAppendDrawQuad<RenderPassDrawQuad>(); | 415 render_pass->CreateAndAppendDrawQuad<RenderPassDrawQuad>(); |
399 quad->SetNew(shared_quad_state, content_rect(), visible_layer_rect, | 416 quad->SetNew(shared_quad_state, content_rect(), visible_layer_rect, |
400 GetRenderPassId(), mask_resource_id, mask_uv_scale, | 417 GetRenderPassId(), mask_resource_id, mask_uv_scale, |
401 mask_texture_size, owning_layer_to_target_scale, | 418 mask_texture_size, owning_layer_to_target_scale, |
402 FiltersOrigin()); | 419 FiltersOrigin()); |
403 } | 420 } |
404 | 421 |
405 } // namespace cc | 422 } // namespace cc |
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