I experience extreme long render times of up to 3 seconds with the following setup:
Atom N250+HT, Intel 45GSE, 2GB RAM under linux kernel 3.15.
A scene is rendered in 1920×1080 with five gridviews displaying about 300 delegates visible at once.
as soon as any content of any item is changed, it takes up to 3 seconds to update.
The QML code is very simple and hierarchically organized, so I wonder if the scenegraph has problems to render efficiently. If nothing is changed, ‘top’ reports less than 3% CPU usage.
QSG_INFO=1 tells me “GL_RENDERER: Mesa DRI Intel® 945GME x86/MMX/SSE2”.
QSG_RENDER_TIMING says: “- Breakdown of frame time; sync: 0 ms render: 2702 ms swap: 0 ms total: 2703 ms time since last frame: 2760 ms”.
The hardware is not very fast, but that does not explain the long rendering time.
EDIT: Alright, the driver needs OpenGL 2.0(+) support, I will update this and check again :-)
EDIT: Alright again, looks like the GPU (driver) does and will not support OpenGL 2.0, so I know that there is no chance to get this fixed.
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