Author Topic: Test of stb_truetype to replace FreeType (Read 8089 times)

Laurent · « **on:** October 14, 2009, 11:34:17 am »

Hi

I've added code in the SFML 2 branch to use stb_truetype instead of FreeType. The code is not activated by default, you have to uncomment the "#define SFML_USE_STBTT" at the beginning of src/SFML/Graphics/FontLoader.cpp to enable it.

I'd like to know what you think of it, i.e. is the quality worse / the same / better than with FreeType. Personnally I feel like the quality is slightly worse, but I did only a few tests

Thanks

Tank · « **Reply #1 on:** October 14, 2009, 01:19:14 pm »

Fontsizes aren't taken into account on my system. Besides of that, the strings look good.

Unfortunately I had some minor issues with compiling:

Code: [Select]

In file included from FontLoader.cpp:438:
../../SFML/Graphics/stb_truetype/stb_truetype.h:547: error: comma at end of enumerator list
../../SFML/Graphics/stb_truetype/stb_truetype.h:554: error: comma at end of enumerator list
../../SFML/Graphics/stb_truetype/stb_truetype.h:561: error: comma at end of enumerator list
../../SFML/Graphics/stb_truetype/stb_truetype.h:571: error: comma at end of enumerator list
../../SFML/Graphics/stb_truetype/stb_truetype.h:581: error: comma at end of enumerator list

I guess Microsoft compilers don't complain about that, eh?

Laurent · « **Reply #2 on:** October 14, 2009, 02:11:27 pm »

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Fontsizes aren't taken into account on my system

Really?
I noticed a difference in the height of rendered characters between FreeType and stb_truetype, but it was not ignored.

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Unfortunately I had some minor issues with compiling

There are several warnings in this library, I guess the author can fix them quickly if I ask him to

However I got no error. I even thought that the standard explicitely allowed a comma after the last value of an enum. After a quick Google search, I found that C99 allows it and that the next C++ standard will allow it as well.

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I guess Microsoft compilers don't complain about that, eh?

Yet, I have checked the "disable language extensions" option :evil:

Tank · « **Reply #3 on:** October 14, 2009, 03:43:14 pm »

Quote from: "Laurent"

Really?
I noticed a difference in the height of rendered characters between FreeType and stb_truetype, but it was not ignored.

No, not really.

I did some more checks and stb_truetype fails to load a specific TTF file. I uploaded it here.

Btw, is there a special reason why you're switching font backends?

Laurent · « **Reply #4 on:** October 14, 2009, 04:01:02 pm »

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Btw, is there a special reason why you're switching font backends?

I like removing such big dependencies.
stb_truetype is one single file in public domain, that can be included directly into SFML. I love that

But of course I won't switch until I'm sure that I can get exactly the same features, same quality and no bug.

Tank · « **Reply #5 on:** October 14, 2009, 05:04:40 pm »

Quote from: "Laurent"

stb_truetype is one single file in public domain, that can be included directly into SFML. I love that

I agree with that.

Quote

But of course I won't switch until I'm sure that I can get exactly the same features, same quality and no bug.

The quality looks good, but maybe it's not compatible with all types of truetype fonts (warning, dangerous superficial knowledge

).