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lite-xl/src/rencache.h

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Initial commit
2019-12-28 12:16:32 +01:00
#ifndef RENCACHE_H
#define RENCACHE_H
#include <stdbool.h>
Fix crash problem with rencache and font access In some cases rencache was using a FontDesc pointer that was actually freed by Lua giving segfaults errors. In addition, some FontDesc object were not freed in some cases if the rencache_end_frame was not called when performing the "restart" command. The invalid access problem can happen because rencache keep some pointers to FontDesc object but these are Lua userdata that Lua can dispose of. This situation is prone to hard errors and we should avoid to keep pointers to objects managed by Lua. To this purpose we use luaL_ref/unref to bind the FontDesc into the Lua's registry while rencache need them. We still keeps pointer to FontDesc object but using luaL_ref we are assured they will not be disposed by Lua. Since we are using luaL_ref/unref to inform the GC about when the objects are in use we can now finalize the objects directly when Lua collects them. Previously the GC metamethods was issuing a FREE command to rencache and the font was actually freed only from the rencache_end_frame function.
2021-05-21 23:22:46 +02:00
#include <lua.h>
Initial commit
2019-12-28 12:16:32 +01:00
#include "renderer.h"
Converted all ints to floats for x coordinate purposes.
2021-09-25 06:35:55 +02:00
void rencache_show_debug(bool enable);
void rencache_set_clip_rect(RenRect rect);
void rencache_draw_rect(RenRect rect, RenColor color);
Cleanup (#826) * Update meson.build - add logic to loop over more lua names (in the future more names might be discovered) - disable warnings and errors on dependencies * adding missing includes and checks, correct data types, pointer mess […] - various functions from string.h were used but never defined - logic was done across multiple different data types with different signedness, got all of them up to snuff - give 0 sized array size of 1 (array of size 0 is illegal, but rewriting the code is out of the scope of this commit) - add preprocessor that marks possibly unused argument as such (does not mean they will get optimized out or anything) - correctly initialize structs with all data needed All these were found by generating the project using `meson -Dwarning_level=3 -Dwerror=true` * remove undefined behavior, correct data types * Comment manual bit manipulation to be investigated * check for more edge cases, replace multiple cleanups with goto * remove system specific includes
2022-04-15 17:34:46 +02:00
float rencache_draw_text(RenFont **font, const char *text, float x, int y, RenColor color);
Converted all ints to floats for x coordinate purposes.
2021-09-25 06:35:55 +02:00
void rencache_invalidate(void);
Cleanup (#826) * Update meson.build - add logic to loop over more lua names (in the future more names might be discovered) - disable warnings and errors on dependencies * adding missing includes and checks, correct data types, pointer mess […] - various functions from string.h were used but never defined - logic was done across multiple different data types with different signedness, got all of them up to snuff - give 0 sized array size of 1 (array of size 0 is illegal, but rewriting the code is out of the scope of this commit) - add preprocessor that marks possibly unused argument as such (does not mean they will get optimized out or anything) - correctly initialize structs with all data needed All these were found by generating the project using `meson -Dwarning_level=3 -Dwerror=true` * remove undefined behavior, correct data types * Comment manual bit manipulation to be investigated * check for more edge cases, replace multiple cleanups with goto * remove system specific includes
2022-04-15 17:34:46 +02:00
void rencache_begin_frame();
void rencache_end_frame();
Initial commit
2019-12-28 12:16:32 +01:00
#endif