On segunda-feira, 18 de março de 2013 20.07.34, Simon St James wrote: > Currently, performance is surprisingly good considering we are still using > the "raster" graphics system where everything is plotted pixel by pixel by > Qt and then flushed to the canvas after pixel format conversion. However, > we suspect that we can get significant gains in rendering speed by writing > a Qt graphics system that uses HTML5 Canvas drawing primitives. [snip] > So I was wondering whether using Qt's opengl graphics system is feasible? I > heard it was "experimental" and "not pixel-perfect", but I've not heard any > reports that that matched mine, which makes me wonder if I just got very > unlucky
The OpenGL graphics system in Qt 4 is considered a done experiment, leading to the conclusion that an OpenGL graphics system is a very bad idea. The code itself never left experimental state and is considered flawed. Do not use it. The experiment itself was a success, since it concluded that we should do something entirely different for performance using OpenGL. That's the Qt 5 / Qt Quick 2 scene graph. -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel Open Source Technology Center
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