diff options
Diffstat (limited to 'src/core/delegated_frame_node.cpp')
-rw-r--r-- | src/core/delegated_frame_node.cpp | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/src/core/delegated_frame_node.cpp b/src/core/delegated_frame_node.cpp index be0858310..73e0420af 100644 --- a/src/core/delegated_frame_node.cpp +++ b/src/core/delegated_frame_node.cpp @@ -850,8 +850,8 @@ void DelegatedFrameNode::commit(ChromiumCompositorData *chromiumCompositorData, // countering the scale of devicePixel-scaled tiles when rendering them // to the final surface. QMatrix4x4 matrix; - matrix.scale(1 / m_chromiumCompositorData->frameDevicePixelRatio, - 1 / m_chromiumCompositorData->frameDevicePixelRatio); + const float devicePixelRatio = m_chromiumCompositorData->frameDevicePixelRatio; + matrix.scale(1 / devicePixelRatio, 1 / devicePixelRatio); if (QSGTransformNode::matrix() != matrix) setMatrix(matrix); @@ -873,12 +873,21 @@ void DelegatedFrameNode::commit(ChromiumCompositorData *chromiumCompositorData, frameData->resource_list.clear(); QScopedPointer<DelegatedNodeTreeHandler> nodeHandler; + const QSizeF viewportSizeInPt = apiDelegate->screenRect().size(); + const QSize viewportSize = (viewportSizeInPt * devicePixelRatio).toSize(); + // We first compare if the render passes from the previous frame data are structurally // equivalent to the render passes in the current frame data. If they are, we are going // to reuse the old nodes. Otherwise, we will delete the old nodes and build a new tree. + // + // Additionally, because we clip (i.e. don't build scene graph nodes for) quads outside + // of the visible area, we also have to rebuild the tree whenever the window is resized. #if (QT_VERSION >= QT_VERSION_CHECK(5, 8, 0)) cc::DelegatedFrameData *previousFrameData = m_chromiumCompositorData->previousFrameData.get(); - const bool buildNewTree = !areRenderPassStructuresEqual(frameData, previousFrameData) || m_sceneGraphNodes.empty(); + const bool buildNewTree = + !areRenderPassStructuresEqual(frameData, previousFrameData) || + m_sceneGraphNodes.empty() || + viewportSize != m_previousViewportSize; #else // No updates possible with old scenegraph nodes const bool buildNewTree = true; @@ -912,10 +921,7 @@ void DelegatedFrameNode::commit(ChromiumCompositorData *chromiumCompositorData, // All RenderPasses except the last one are rendered to an FBO. cc::RenderPass *rootRenderPass = frameData->render_pass_list.back().get(); - QRectF screenRectQt = apiDelegate->screenRect(); - gfx::Size thisSize(int(screenRectQt.width() * m_chromiumCompositorData->frameDevicePixelRatio), - int(screenRectQt.height() * m_chromiumCompositorData->frameDevicePixelRatio)); - + gfx::Rect viewportRect(toGfx(viewportSize)); for (unsigned i = 0; i < frameData->render_pass_list.size(); ++i) { cc::RenderPass *pass = frameData->render_pass_list.at(i).get(); @@ -947,7 +953,7 @@ void DelegatedFrameNode::commit(ChromiumCompositorData *chromiumCompositorData, scissorRect = pass->output_rect; } else { renderPassParent = this; - scissorRect = gfx::Rect(thisSize); + scissorRect = viewportRect; scissorRect += rootRenderPass->output_rect.OffsetFromOrigin(); } @@ -1015,6 +1021,8 @@ void DelegatedFrameNode::commit(ChromiumCompositorData *chromiumCompositorData, ResourceHolderIterator end = resourceCandidates.constEnd(); for (ResourceHolderIterator it = resourceCandidates.constBegin(); it != end ; ++it) resourcesToRelease->push_back((*it)->returnResource()); + + m_previousViewportSize = viewportSize; } void DelegatedFrameNode::flushPolygons( |