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Fixes #95 Make video refresh rate configurable, default to 30

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This commit is contained in:
Stefan Arentz 2016-12-25 23:48:48 -05:00
parent 674907e624
commit 0f38a92a4e
2 changed files with 16 additions and 8 deletions
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22
src/two.c
View File

@ -491,14 +491,16 @@ static bool ewm_two_step_cpu(struct ewm_two_t *two, int cycles) {
return true;
}
#define EWM_TWO_OPT_DRIVE1 0
#define EWM_TWO_OPT_DRIVE2 1
#define EWM_TWO_OPT_COLOR 2
#define EWM_TWO_OPT_DRIVE1 (0)
#define EWM_TWO_OPT_DRIVE2 (1)
#define EWM_TWO_OPT_COLOR (2)
#define EWM_TWO_OPT_FPS (3)
static struct option one_options[] = {
{ "drive1", required_argument, NULL, EWM_TWO_OPT_DRIVE1 },
{ "drive2", required_argument, NULL, EWM_TWO_OPT_DRIVE2 },
{ "color", no_argument, NULL, EWM_TWO_OPT_COLOR },
{ "fps", required_argument, NULL, EWM_TWO_OPT_FPS },
{ NULL, 0, NULL, 0 }
};
@ -508,6 +510,7 @@ int ewm_two_main(int argc, char **argv) {
char *drive1 = NULL;
char *drive2 = NULL;
bool color = false;
int fps = EWM_TWO_FPS_DEFAULT;
char ch;
while ((ch = getopt_long_only(argc, argv, "", one_options, NULL)) != -1) {
@ -521,6 +524,9 @@ int ewm_two_main(int argc, char **argv) {
case EWM_TWO_OPT_COLOR:
color = true;
break;
case EWM_TWO_OPT_FPS:
fps = atoi(optarg);
break;
}
}
@ -592,8 +598,8 @@ int ewm_two_main(int argc, char **argv) {
break;
}
if ((SDL_GetTicks() - ticks) >= (1000 / 50)) {
if (!ewm_two_step_cpu(two, 1000000 / 50)) {
if ((SDL_GetTicks() - ticks) >= (1000 / fps)) {
if (!ewm_two_step_cpu(two, 1000000 / fps)) {
break;
}
@ -601,15 +607,15 @@ int ewm_two_main(int argc, char **argv) {
// the second half of the frames we draw each second. The
// latter because that is when we update flashing text.
if (two->screen_dirty || (phase == 0) || (phase == (50 / 2))) {
ewm_scr_update(two->scr, phase, 50);
if (two->screen_dirty || (phase == 0) || (phase == (fps / 2))) {
ewm_scr_update(two->scr, phase, fps);
two->screen_dirty = false;
SDL_RenderPresent(two->scr->renderer);
}
ticks = SDL_GetTicks();
phase += 1;
if (phase == 50) {
if (phase == fps) {
phase = 0;
}
}

2
src/two.h
View File

@ -49,6 +49,8 @@
#define EWM_A2P_BUTTON4 3 // Actually ony exists on the gs?
#define EWM_A2P_BUTTON_COUNT 4
#define EWM_TWO_FPS_DEFAULT (30)
struct mem_t;
struct ewm_dsk_t;
struct scr;