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a font generator problem

Started by Yozh_Programmer Apr 24, 2004 at 7:54 PM 2 replies 200+ views

Original Post

Apr 24, 2004 at 7:54 PM

A wrote a font generator. Any font you want you can generate in any size. Original font is sharp enough and looks beautiful. But my font class supports zooming of font. So you can change the size of font on the screen. But the problem is that when you change zoom aspect, the texture of the font becomes smaller, and cause to font to be sharpless. How to make texture to stay sharp even if it becomes smaller. I make zooming through glScale function. And GL_TEXTURE_MAG(MIN)_FILTER to GL_LINEAR. Thanx for your attention.

Ostsol

Apr 24, 2004 at 8:02 PM

There really isn''t any simple way. You could have multiple textures of various sizes, each representing a certain font size. . .

urayami

Apr 25, 2004 at 6:57 AM

Hi. I''m not sure if you''re having any sharpness problems when you move it close (I''m guessing no), but as far as when you zoom out (font gets "smaller"), I think using mipmapping would help for that since it generates textures of various sizes. Try this:

glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR) ;
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST) ;

There are various levels of mipmapping though. Here are four I am away of:

#define GL_NEAREST_MIPMAP_NEAREST 0x2700
#define GL_LINEAR_MIPMAP_NEAREST 0x2701
#define GL_NEAREST_MIPMAP_LINEAR 0x2702
#define GL_LINEAR_MIPMAP_LINEAR 0x2703

You might want to play around with these. Good luck!

~Urayami

benjamin bunny

Apr 25, 2004 at 7:35 AM

clicky

At least check the current forum page to see if your question has been asked before.

[edited by - benjamin bunny on April 25, 2004 8:36:04 AM]

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