Re: [ft] Getting Vector Data form FT_GlyphSlot Render through OpenGL

[suzuki toshiya]

Hi,

To retrieve the vector data from TTF via FreeType2, FT_Outline_Decompose()
function would be useful. Giving a function pointer table calling the functions
to move currentpoint, or to draw straight, cubic or conic curves, 
FT_Outline_Decompose()
calls them to trace the vector data in the "outline" member in glyph slot.

The objection might be that the rasterized result by OpenGL cannot be
cached by FreeType2 (FreeType2 has a cache subsystem), so rendering a
long text with small charset could be slow.

Regards,
mpsuzuki

Piyush Verma wrote:
> Hello All,
> 
> I am very new to Freetype lib.
> 
> First of all many thanks for writing so powerful  cross platform library.
> 
> TTF fonts stored vector based data so my idea is to get that data convert
> it to opengl Coordinates and render on the fly to the screen.
> 
> Objective is to transfer processing of resterisation from CPU to GPU to
> achieve batter performance.
> 
> 
> Any suggestion, document of pointer on how can I achieve that ?
> 
> 
> 
> 
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