Technical chit-chat, leaning boldly towards work-issues.
Summit #2 (and Clutter)
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As people have blogged (e.g. here & here), maemo will get Clutter support! On related news, haven't had time to really hack clutteroad forward but last time I left it looking this:
Lately we have been working to perfect the Qt Quick 3D for the 5.15 release. There are still some tweaking to do, but things are looking pretty nice already! In order to prove (to ourselves and to others) that Quick 3D is ready for the prime time, we have also been implementing some demos with it. Tomi already made a blog post about Quick 3D Benchmarking demo here , go check it out if you haven't already. This benchmarking application can be used to test many features of Quick 3D and to evaluate how different hardware can handle the load when the model count, complexity, texture sizes etc. are increased. Another demo we have prepared is called DynamicMeters. The main targets of this demo were: Demonstrate how Quick 3D and Qt Quick (2D) can easily be combined into single UX. While 3D is great, most applications want to combine also traditional 2D elements in different ways. Test how Quick 3D works together with 3rd party OpenGL libraries. Make sure that the performance is
Howdy! Do you remember the time before HD, amoled etc. super sharp screens? When pixels were so big that you could easily count them and any colors were luxury? This is your ticket back to these good ol' times: LedScreen Qt5 & QtQuick 2.0 component! Here is a video presenting it with example applications: This component allows you to use any QML content as the source for the ledscreen, define led size and color or use colors from the source item. So it doesn't contain kitchen sink yet, but there's only so much you can fit into 60 lines of QML + GLSL with API documentation.. ;-) Feel free to grab sources from here & modify & use as you want! PS: Hoping to be able to develop & demo Qt5 soon on Raspberry Pi!
When implementing component into QtQuick UI which needs something more than rectangles, images and texts, pure declarative QML hasn't been enough. Popular choices to use for items with some sort of vector drawing are QML Canvas , QQuickPaintedItem or QNanoPainter . But with Qt 5.10 there will be supports for new Shape element with paths that contain lines, quads, arcs etc. so I decided to install Qt 5.10 beta3 and implement all tests of "qnanopainter_vs_qpainter_demo" with also QML + Shape elements. ( This kinda makes it "qnanopainter_vs_qpainter_vs_qmlshape_demo" but not renaming now ). So here is in all glory the same UI implemented with QNanoPainter (left), QQuickPaintedItem (center), and QML+Shape (right): Hard to spot the differences right? If only there would be a way to prove this, some way to x-ray into these UIs... like QSG_VISUALIZE=overdraw to visualize what Qt Quick Scene Graph Renderer sees? Here you can see that scene graph sees QNan
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