General Category > Discussion - EVE

UNIOCDE fonts bigger than 18

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BRT Community:
Hi,
Thanks for your update, we are doing some testing and are discussing with our R&D team to understand this issue, and will update very soon,

Thanks Rudolph, we have also passed those to our R&D team, they seem like some good suggestions:

In regards of EAB 2.10.2 I found a couple of things a bit odd.
- why is "Reserve Space" not set as default?
- why is "L8" selected by default for "Extended Format"?
- why is the ASTC set to 4x4 by default instead of a more reasonable 8x8?
- why is this SampleApp generated every single time? can we please have a switch for that which defaults to off?

Best Regards, BRT Community

Rudolph:
Ok, I went back and converted Ubuntu-Light.ttf with exactly your settings.
The output is the same, only my "Font Preview" is showing the font at perhaps half the size than in your screen shot.
My .map file has the .xfont at 113536.

I almost copied your code:


--- Code: ---    if (E_OK == EVE_init_flash())
    {
        EVE_cmd_flashread(MEM_FONT1, 113536, (309|3)+1); /* copy .xfont from FLASH to RAM_G, offset and length are from the .map file */
    }

    EVE_cmd_dl( CMD_DLSTART );
    EVE_cmd_dl(CLEAR_COLOR_RGB(51,51,51));
    EVE_cmd_dl( CLEAR( 1, 1, 1 ) );
    EVE_cmd_dl( VERTEX_FORMAT(0) );
    EVE_cmd_setfont2( 12, MEM_FONT1,       0 );
    EVE_cmd_dl( DL_END ); // does not do anything here
    EVE_cmd_dl( DL_DISPLAY );
    EVE_cmd_dl( CMD_SWAP );
    EVE_execute_cmd();

--- End code ---


--- Code: ---    EVE_cmd_dl( CMD_DLSTART );
    EVE_cmd_dl(CLEAR_COLOR_RGB(0,0,18));
    EVE_cmd_dl( CLEAR( 1, 1, 1 ) );
    EVE_cmd_text( 10,  10, 12, 0, "Quick fox at 120°C ");
    EVE_cmd_dl( DL_END ); // does not do anything here
    EVE_cmd_dl( DL_DISPLAY );
    EVE_cmd_dl( CMD_SWAP );
    EVE_execute_cmd();

--- End code ---

And it still works, I get the line displayed at the top of the screen.

I am re-installing EAB now, I may have changed something before.
I redid it all, looks like I either modified EAB or previously did not install from scratch, or both.
The new .glyph file is different for some reason.
But the result is still the same, the line is printed just fine.

Craggan:
After remembering to a layout width of "96" ??? and Rudolph's wish to use 8x8 as a standard
i tried also 8x8 compression instead of 4x4.

Now the layout width is "64" and wonder it works. Also the file size of the glyph is about the half.

Further tries with a font size of 28, 29 and 32 failed again (Ubuntu Light, 8x8).

A font size of 31 with 12x12 workes fine.

A font size of 41 with 12x12 doesn't work.

A font size of 37 with 12x12 workes fine.


It seems the result is depending on a relationship of the font size to compression ratio.
As Rudolph's and my experience differ slighty, i asume that we have possible different sources of the ttf-files.

Some relations fit, some not.


I also would suggest to add one point more to Rudolph's wish list:

Please store "automatically" all parameters entered on closing EAB and restore them while starting again.
Especially the last used directories for opening and creating.

Rudolph:
I did compress Ubuntu-Light.ttf with 4x4, although this makes the binary pretty huge without benefit.
I also saw this huge "layout width" but it just worked for me.

Very strange.

Craggan:
Meanwhile i don't know, where to seek else. I just can make assumptions.

My display is about 1 year old, maybe i have an older silicon of the BT817Q?

Rudolph, could you make your startup sequence public( initialization parameters )?

BRT Community, do you have any advice meanwhile?

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