alema/ugui.c3l
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

ffff

Browse source
This commit is contained in:
Alessandro Mauri 2023-02-13 23:42:44 +01:00
parent 7552d2fa2a
commit 4b6f76b6c8
6 changed files with 125 additions and 63 deletions
Download patch file Download diff file Expand all files Collapse all files

22
text_rendering/cache.c
View file

@ -6,6 +6,7 @@
#include <stdint.h>
#include <string.h>
#include "cache.h"
#include "hash.h"
#include "font.h"
#include "util.h"
@ -49,7 +50,7 @@ void cache_destroy(void)
}
struct font_glyph * cache_get(unsigned int code)
const struct font_glyph * cache_search(unsigned int code)
{
struct hm_entry *r = hm_search(hash_table, code);
@ -63,21 +64,28 @@ struct font_glyph * cache_get(unsigned int code)
}
int cache_insert(struct font_glyph *g)
// return the first free spot into the cache
unsigned int cache_get(void)
{
struct font_glyph *spot = NULL;
uint32_t x = 0;
// find an open spot in the cache
// TODO: use __builtin_clz to speed this up
for (; x < CACHE_SIZE; x++) {
// printf("test: %d\n", x);
if (!B_TEST(x))
break;
}
return x;
}
// inserts the font glyph into the cache
const struct font_glyph * cache_insert(struct font_glyph *g, unsigned int x)
{
struct font_glyph *spot = NULL;
// allocation in cache failed
if (B_TEST(x))
return -1;
return NULL;
set_bit(x);
spot = &cache_array[x];
@ -100,7 +108,7 @@ int cache_insert(struct font_glyph *g)
struct hm_entry e = { .code = g->codepoint, .data = spot};
if (!hm_insert(hash_table, &e))
return -1;
return NULL;
return 0;
return spot;
}