Ok git it thanks werner and one more thing that i want to ask is for getting well in work with freetype i need to study whole documentation of freetype or i just need to have the intro and build it to the system, Inshorts i am asking you to suggest that what are the topics in which i should be acquaint so that i will not find any hurdle.
Thanks Aman On Thu, Mar 18, 2021, 12:02 Werner LEMBERG <w...@gnu.org> wrote: > > Hello Aman, > > > > I am interested in the project -_"Develop a test framework for > > checking Freetype's rendering output" > > Great! > > > 1. What signifies the meaning of word "font corpora" as i haven't > > found anything about by googling it. > > A good and valid question. > > 'Corpora' is the plural form of the Latin word 'corpus'. A 'font > corpus' is a set of fonts that kind-of belong together, or have been > collected for a common purpose. For example, each time the FreeType > fuzzer finds a problem, the offending fuzzed font gets added to such a > corpus. > > For the problem of checking the rendering output, collecting fonts for > a similar corpus is necessary. Ideally, the elements of this corpus > should be tiny fonts of various font formats that either > > (1) increase the code coverage of the FreeType (mainly to check error > handling) > > or > > (2) test all aspects of the rendering pipeline, covering as much > features as possible. > > For the GSoC task at hand, (1) can be ignored more or less, since it > doesn't contribute to visual differences. > > A serious problem is that many important fonts are commercial fonts, > which can't be directly added to a freely available corpus. Most > fonts, however, allow subsetting, and collecting subsetted fonts is > similar to collecting PDF files that contain them and thus legally > allowed.[*] > > Let's assume that glyph 'foo' of font 'bar' causes a rendering > problem. A logical step would be to create a subsetted font of 'bar' > that contains just this single 'foo' glyph (more or less). > > > 2. Where can i find instructions to build free type > > Well, as with almost all source code package you should start with the > `README` file :-) > > https://gitlab.freedesktop.org/freetype/freetype > > > Werner > > > [*] At least this is what I think. It should be otherwise possible to > construct a minimum PDF file around a subsetted font. >
