General Category > Discussion - EVE

UNIOCDE fonts bigger than 18

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Craggan:
Hi there,

is there a failure in the font converter?

When i create UNICODE fonts bigger than 18 the distance between the letters are to big, please see attachment.

In this case font "Ubuntu".

Or am i wrong?

BRT Community:
Hi,

Could you please advise what settings you used to convert the font in EVE Asset Builder and also which version of the EAB you use?

Best Regards, BRT Community

Craggan:

EAB 2.10.2

Rudolph:
As I just got a new company style guide to comply with I went thru a number of different fonts and font-sizes today using EAB 2.10.2.
I am using the fourth flash image now with only Roboto font in sizes 12/14/16/18/20/22/24/26/28.
I also tried Ubunto-Light, a couple of other fonts and using odd sizes 19/21/23/25/27.

And well, it just works in all sizes.
My input character file is this:
" !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~©«°±²³´µ¹»¼½¾ÄÖ×Üßäëö÷øü"
So only "Basic Latin" and a selection from "Latin-1 Supplement".


I encountered three "issues".
First one was that EAB 2.10.2 is using the correct size for the .xfont files now and adds a meta-file .pad in between the entries.
And at first I just copied the size for the .xfont file from the .map and used it with CMD_FLASHREAD - but the number of bytes read must be a multiple of 4.
In earlier versions of EAB there was no .pad and the .xfont ended up beeing shown with a size of 320 bytes.

My second issue was that I tried to use bitmap handle 15 for one of the fonts, just counting up from 12, which does not work by default as this is the scratch bitmap handle.

And my third issue was that the bandwith of the external flash is of course limited, even more so with random access, so I can not use the six fonts I set up for display from the external flash at the same time.
Well, I could use the font-cache for at least the largest font and copy all 9 fonts to RAM_G as the flash image is only 275kiB (copying the .glyph to RAM-G also requires to adapt the .xfont file to use the new memory location).
But this is not a real project anyways.

Edit: I tried a couple of things including over-clocking (looked stable at 96MHz but I went back to 72MHz)
I set REG_AH_HCYCLE_MAX to 4000 and now I have the line "Quick fox at 120°C" printed out in six different sizes: 18/20/22/24/26/28 and reading REG_FRAMES once per second and calculating the delta to the previous value shows rather stable 58 to 59.
So that really makes the last point a non-issue as well, even without copying any of the .glyph files to RAM_G.



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?

Craggan:
Meanwhile i changed also to the same fontnumber 12 and string, as you did.



    while( EVE_init() != E_OK );

    EVE_init_flash();

    EVE_cmd_flashread( EVE_RAM_G,  113536, 312 ) ; // Ubuntu 19, multiple of 4
   
    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, EVE_RAM_G,       0 );
    EVE_cmd_dl( END() );
    EVE_cmd_dl( DISPLAY() );
    EVE_cmd_dl( CMD_SWAP );
    EVE_execute_cmd();
   
   
    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( END() );
    EVE_cmd_dl( DISPLAY() );
    EVE_cmd_dl( CMD_SWAP );
    EVE_execute_cmd();   
   
    //trap here
    while(1) {}



I'm using a Riverdi 7" 1024x600 display.

The display starts, Flash is loaded, taken address also from map-file, don't know what going on?

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