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Add FPSLimiter functionality

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This commit is contained in:
Francisco Javier Trujillo Mata 2020-07-15 13:37:52 +02:00 committed by Francisco Javier Trujillo Mata
parent 77c59dea70
commit 86c43d65fa
1 changed files with 62 additions and 2 deletions
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64
gfx/drivers/ps2_gfx.c
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@ -39,6 +39,7 @@ typedef struct ps2_video
bool menuVisible;
bool fullscreen;
bool vsync;
int vsync_callback_id;
bool force_aspect;
int PSM;
@ -53,9 +54,25 @@ typedef struct ps2_video
GSTEXTURE *coreTexture;
} ps2_video_t;
static int vsync_sema_id;
/* PRIVATE METHODS */
static int vsync_handler()
{
iSignalSema(vsync_sema_id);
ExitHandler();
return 0;
}
static GSGLOBAL *init_GSGlobal(void)
{
ee_sema_t sema;
sema.init_count = 0;
sema.max_count = 1;
sema.option = 0;
vsync_sema_id = CreateSema(&sema);
GSGLOBAL *gsGlobal = gsKit_init_global();
gsGlobal->Mode = GS_MODE_NTSC;
@ -83,6 +100,41 @@ static GSGLOBAL *init_GSGlobal(void)
return gsGlobal;
}
static void deinit_GSGlobal(GSGLOBAL *gsGlobal)
{
gsKit_clear(gsGlobal, GS_BLACK);
gsKit_vram_clear(gsGlobal);
gsKit_deinit_global(gsGlobal);
}
// Copy of gsKit_sync_flip, but without the 'flip'
static void gsKit_sync(GSGLOBAL *gsGlobal)
{
if(!gsGlobal->FirstFrame)
WaitSema(vsync_sema_id);
while (PollSema(vsync_sema_id) >= 0)
;
}
// Copy of gsKit_sync_flip, but without the 'sync'
static void gsKit_flip(GSGLOBAL *gsGlobal)
{
if(!gsGlobal->FirstFrame)
{
if(gsGlobal->DoubleBuffering == GS_SETTING_ON)
{
GS_SET_DISPFB2( gsGlobal->ScreenBuffer[gsGlobal->ActiveBuffer & 1] / 8192,
gsGlobal->Width / 64, gsGlobal->PSM, 0, 0 );
gsGlobal->ActiveBuffer ^= 1;
}
}
gsKit_setactive(gsGlobal);
}
static GSTEXTURE *prepare_new_texture(void)
{
GSTEXTURE *texture = (GSTEXTURE*)calloc(1, sizeof(*texture));
@ -94,6 +146,7 @@ static void init_ps2_video(ps2_video_t *ps2)
ps2->gsGlobal = init_GSGlobal();
gsKit_TexManager_init(ps2->gsGlobal);
ps2->vsync_callback_id = gsKit_add_vsync_handler(vsync_handler);
ps2->menuTexture = prepare_new_texture();
ps2->coreTexture = prepare_new_texture();
@ -162,7 +215,10 @@ static void prim_texture(GSGLOBAL *gsGlobal, GSTEXTURE *texture, int zPosition,
static void refreshScreen(ps2_video_t *ps2)
{
if (ps2->vsync)
gsKit_sync_flip(ps2->gsGlobal);
{
gsKit_sync(ps2->gsGlobal);
gsKit_flip(ps2->gsGlobal);
}
gsKit_queue_exec(ps2->gsGlobal);
gsKit_TexManager_nextFrame(ps2->gsGlobal);
}
@ -296,7 +352,11 @@ static void ps2_gfx_free(void *data)
free(ps2->menuTexture);
free(ps2->coreTexture);
gsKit_deinit_global(ps2->gsGlobal);
gsKit_remove_vsync_handler(ps2->vsync_callback_id);
deinit_GSGlobal(ps2->gsGlobal);
if (vsync_sema_id >= 0)
DeleteSema(vsync_sema_id);
free(data);
}