DynamicBitmapCreateExternal() for RGB565

[Priyank]

Hi, I am creating a DynamicBitmapCreateExternal() for RGB565, but the image shows up faded. Is there any fix for this? I made sure to set cache for it. I also tried for L8 and it didn't show.

[GaetanGodart]

Hello @Priyank ,

 

If the image looks faded / pastel color / lighter color, perhaps it is a color format issue.

Can you please share more information with us?

Are you able to make a "regular" DynamicBitmap work?

Can you share your code and images of the result and expected result?

 

Regards,

[Priyank]

Yes, it works with regular dynamic bitmap.

FrontendApplication::FrontendApplication(Model& m, FrontendHeap& heap)
 : FrontendApplicationBase(m, heap)
{
	static uint16_t cacheSize[512];
 Bitmap::setCache(cacheSize, sizeof(cacheSize),1);
}

void LandingView::setupScreen()
{
bmpId = Bitmap::dynamicBitmapCreateExternal(146, 36,(void*)0x90FC0000, Bitmap::RGB565);
logo.setBitmap(Bitmap(bmpId));
add(logo);
logo.setXY(20,20);
}

 The address is where I have the image stored (QSPI). This code worked when using a regular bitmap cache and dynamic bitmap create. Logo here is a Image widget.

[JohanAstrup]

Hello @Priyank.

The issue has been fixed in TouchGFX 4.26.0.

Best regards,
Johan

 

[Priyank]

Hello, @GaetanGodart @JohanAstrup   

I've run the same tests under TouchGFX 4.26.0, but I still run into the issue of the image looking grainy/faded. Does stm32cubeIde also need to be updated? I am running that on an older version (1.16.1)

 static uint16_t cacheSize[512];
 Bitmap::setCache(cacheSize, sizeof(cacheSize),1);
 volatile BitmapId bmpId = Bitmap::dynamicBitmapCreateExternal(185, 43,(void*)image_logo, Bitmap::BitmapFormat::RGB565);

 

[JohanAstrup]

Hello @Priyank.

You do not have to update STM32CubeIDE.
Instead, try deleting the ST folder in the Middlewares folder and then regenerate code in TouchGFX Designer.

Best regards,
Johan