[raster] Allocate render pool for mono rasterizer on the stack.
Instead of using the `render_pool' member of `FT_Library' that is
provided down to the rasterizer, completely ignore that and allocate
needed objects on the stack instead.
With this patch, rasterizing glyphs from different faces from
different threads doesn't crash in the monochrome rasterizer.
* src/raster/ftraster.c (black_TRaster): Remove `buffer',
`buffer_size', and `worker' members.
(ft_black_render): Create `buffer' locally.
(ft_black_reset): Updated.
2 files changed