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rewrite term_esc_rgb for ~8% more FPS

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nick black 2019-12-27 09:55:06 -05:00
parent 38cff7e54f
commit 148114c6ca
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GPG Key ID: 5F43400C21CBFACC
1 changed files with 2 additions and 29 deletions
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31
src/lib/render.c
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@ -321,7 +321,7 @@ term_setstyles(const notcurses* nc, FILE* out, uint32_t* curattr, const cell* c,
} }
// 3 for foreground, 4 for background, ugh FIXME // 3 for foreground, 4 for background, ugh FIXME
static int static inline int
term_esc_rgb(notcurses* nc __attribute__ ((unused)), FILE* out, int esc, term_esc_rgb(notcurses* nc __attribute__ ((unused)), FILE* out, int esc,
unsigned r, unsigned g, unsigned b){ unsigned r, unsigned g, unsigned b){
// The correct way to do this is using tiparm+tputs, but doing so (at least // The correct way to do this is using tiparm+tputs, but doing so (at least
@ -339,34 +339,7 @@ term_esc_rgb(notcurses* nc __attribute__ ((unused)), FILE* out, int esc,
// we'd like to use the proper ITU T.416 colon syntax i.e. "8:2::", but it is // we'd like to use the proper ITU T.416 colon syntax i.e. "8:2::", but it is
// not supported by several terminal emulators :/. // not supported by several terminal emulators :/.
#define RGBESC2 "8;2;" #define RGBESC2 "8;2;"
// rrr;ggg;bbbm if(fprintf(out, RGBESC1"%c"RGBESC2"%d;%d;%dm", esc, r, g, b) < 0){
char rgbesc[] = RGBESC1 " " RGBESC2 " ";
int len = strlen(RGBESC1);
rgbesc[len++] = esc;
len += strlen(RGBESC2);
if(r > 99){
rgbesc[len++] = r / 100 + '0';
}
if(r > 9){
rgbesc[len++] = (r % 100) / 10 + '0';
}
rgbesc[len++] = (r % 10) + '0';
rgbesc[len++] = ';';
if(g > 99){ rgbesc[len++] = g / 100 + '0'; }
if(g > 9){ rgbesc[len++] = (g % 100) / 10 + '0'; }
rgbesc[len++] = g % 10 + '0';
rgbesc[len++] = ';';
if(b > 99){ rgbesc[len++] = b / 100 + '0'; }
if(b > 9){ rgbesc[len++] = (b % 100) / 10 + '0'; }
rgbesc[len++] = b % 10 + '0';
rgbesc[len++] = 'm';
rgbesc[len] = '\0';
int w;
#ifdef __USE_GNU
if((w = fputs_unlocked(rgbesc, out)) < len){
#else
if((w = fputs(rgbesc, out)) < len){
#endif
return -1; return -1;
} }
return 0; return 0;