Which pixel format is more efficent for RGB565?
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‎2021-09-07 7:19 PM
Hi,
In my project, the MCU is STM32F429ZE and RGB565 is selected. I found that different image format perform different performance. If all the images was set to RGB565, the framerate is lower than ARGB888. I don't know why? Maybe the former needs extra hardware transform? So which is better for me?
The second question is that: SDRAM is used to cache images and fonts, before touchgfx_init(), I copy all the images and fonts to SDRAM from NAND flash, so will the framerate improved if I set cache for images of current use form SDRAM to SDRAM of cache address ?
Thanks!
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STM32F4 Series
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TouchGFX
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‎2021-09-09 2:02 AM
Hello?
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‎2021-09-09 4:34 AM
Hi,
Could you share more on your configuration ? Are you working on a custom board or on a ST development kit ? Did you start your project from scratch or from a TBS ? How much "worse" are the performances between the RGB565 and ARGB888 ? Do you use ChromArt ? What is your display interface/color depth/ ... ?
/Romain
