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fix vsync (somewhat)

This commit is contained in:
olebeck 2022-05-28 17:30:19 +02:00
parent 4cba811f1e
commit d848729281
2 changed files with 10 additions and 6 deletions
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7
player/player.c
View File

@ -43,13 +43,14 @@ void display() {
#endif
#ifdef __POCKETSTATION__
#define FPS 24
#define CLOCK_SPEED CLOCK_4M
#define FPS 64
#define CLOCK_SPEED CLOCK_8M
#define VSYNC_COUNT (FRAMESKIP * (FPS/24))
#include "pocketlib.h"
static void display() {
// ????
for(int i = 0; i<FRAMESKIP*2; i++) VSync();
VSync(VSYNC_COUNT);
uint32_t *src = (uint32_t*)screen;
volatile unsigned int *dst = LCD_VRAM_ADRS;
int i = 32;

9
player/pocketlib.h
View File

@ -62,6 +62,9 @@ int PadOnRelease, PadOnPress;
#define CLOCK_4M 0x7
#define CLOCK_8M 0x8
#define TICK_PER_SEC (15625 << CLOCK_SPEED)
#define TICK_PER_FRAME (TICK_PER_SEC / FPS)
/**/
#define TIMER0_START() *((volatile unsigned int *)(0xA800008)) |= 0x4
@ -159,7 +162,7 @@ void FIQ_Handler(void)
/****************************************/
// Sync Functions
void VSync()
void VSync(int count)
{
register int cnt = VCount;
register int PadState = PAD_STATUS;
@ -169,7 +172,7 @@ void VSync()
PadOnRelease &= PadOnPress;
PadOnPress = PadState;
while (VCount == cnt); // Wait For IRQ Timer0
while (VCount < cnt + count); // Wait For IRQ Timer0
}
/****************************************/
@ -194,7 +197,7 @@ void PocketInit(void)
IRQ_ENABLE = IRQ_TIMER0 | FIQ_TIMER2;
// Start VSync Timer
TIMER0_SETCOUNT((15625 << CLOCK_SPEED) / FPS);
TIMER0_SETCOUNT(TICK_PER_FRAME);
TIMER0_START();
while (PAD_STATUS & PAD_BUTTON); // Wait for Button Release (Button pressed when comming from Menu)