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293 \section2 Pixmap filters |
293 \section2 Pixmap filters |
294 |
294 |
295 Convolution, colorize, drop shadow, and blur filters are accelerated |
295 Convolution, colorize, drop shadow, and blur filters are accelerated |
296 using OpenVG operations. |
296 using OpenVG operations. |
297 |
297 |
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298 \section2 Scrolling |
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299 |
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300 By default, accelerated scrolling is not enabled because the impact on |
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301 performance is very much tied to the hardware platform. To enable |
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302 accelerated scrolling, you should ensure that QVG_BUFFER_SCROLLING is |
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303 defined when compiling the QtOpenVG module. |
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304 |
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305 You should only enable this feature if vgCopyPixels() is known to be |
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306 efficient on your hardware platform. |
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307 |
298 \section1 Known issues |
308 \section1 Known issues |
299 |
309 |
300 Performance of copying the contents of an OpenVG-rendered window to the |
310 Performance of copying the contents of an OpenVG-rendered window to the |
301 screen needs platform-specific work in the QVGWindowSurface class. |
311 screen needs platform-specific work in the QVGWindowSurface class. |
302 |
312 |