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perfect vsync

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@218 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-08-08 19:49:11 +00:00
parent 0af33fe0ef
commit aae35e84da
4 changed files with 64 additions and 32 deletions
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40
platform/gp2x/emu.c
View file

@ -1063,11 +1063,11 @@ static void simpleWait(int thissec, int lim_time)
void emu_Loop(void)
{
static int gp2x_old_clock = 200;
static int PsndRate_old = 0, PicoOpt_old = 0, PsndLen_real = 0, pal_old = 0;
static int PsndRate_old = 0, PicoOpt_old = 0, EmuOpt_old = 0, PsndLen_real = 0, pal_old = 0;
char fpsbuff[24]; // fps count c string
struct timeval tval; // timing
int thissec = 0, frames_done = 0, frames_shown = 0, oldmodes = 0;
int target_fps, target_frametime, lim_time, i;
int target_fps, target_frametime, lim_time, vsync_offset, i;
char *notice = 0;
printf("entered emu_Loop()\n");
@ -1085,6 +1085,13 @@ void emu_Loop(void)
printf("updated gamma to %i\n", currentConfig.gamma);
}
if ((EmuOpt_old&0x2000) != (currentConfig.EmuOpt&0x2000)) {
if (currentConfig.EmuOpt&0x2000)
set_LCD_custom_rate(Pico.m.pal ? LCDR_100 : LCDR_120);
else unset_LCD_custom_rate();
}
EmuOpt_old = currentConfig.EmuOpt;
fpsbuff[0] = 0;
// make sure we are in correct mode
@ -1128,6 +1135,19 @@ void emu_Loop(void)
// prepare CD buffer
if (PicoMCD & 1) PicoCDBufferInit();
// calc vsync offset to sync timing code with vsync
if (currentConfig.EmuOpt&0x2000) {
gettimeofday(&tval, 0);
gp2x_video_wait_vsync();
gettimeofday(&tval, 0);
vsync_offset = tval.tv_usec;
while (vsync_offset >= target_frametime)
vsync_offset -= target_frametime;
if (!vsync_offset) vsync_offset++;
printf("vsync_offset: %i\n", vsync_offset);
} else
vsync_offset = 0;
// loop?
while (engineState == PGS_Running)
{
@ -1210,10 +1230,8 @@ void emu_Loop(void)
if (frames_shown > frames_done) frames_shown = frames_done;
}
}
#if 0
sprintf(fpsbuff, "%05i", Pico.m.frame_count);
#endif
lim_time = (frames_done+1) * target_frametime;
lim_time = (frames_done+1) * target_frametime + vsync_offset;
if(currentConfig.Frameskip >= 0) { // frameskip enabled
for(i = 0; i < currentConfig.Frameskip; i++) {
updateKeys();
@ -1309,12 +1327,18 @@ if (Pico.m.frame_count == 31563) {
reset_timing = 1;
else if (PsndOut != NULL || currentConfig.Frameskip < 0)
{
// sleep if we are still too fast
// sleep or vsync if we are still too fast
// usleep sleeps for ~20ms minimum, so it is not a solution here
if(tval.tv_usec < lim_time)
{
// we are too fast
simpleWait(thissec, lim_time);
if (vsync_offset) {
if (lim_time - tval.tv_usec > target_frametime/2)
simpleWait(thissec, lim_time - target_frametime/4);
gp2x_video_wait_vsync();
} else {
simpleWait(thissec, lim_time);
}
}
}

2
platform/gp2x/emu.h
View file

@ -21,7 +21,7 @@ typedef struct {
int EmuOpt; // LSb->MSb: use_sram, show_fps, enable_sound, gzip_saves,
// squidgehack, no_save_cfg_on_exit, <unused>, 16_bit_mode
// craigix_ram, confirm_save, show_cd_leds, confirm_load
//
// A_SNs_gamma, perfect_vsync
int PicoOpt; // used for config saving only, see Pico.h
int PsndRate; // ditto
int PicoRegion; // ditto

6
platform/gp2x/gp2x.c
View file

@ -34,6 +34,7 @@
#include "gp2x.h"
#include "usbjoy.h"
#include "asmutils.h"
volatile unsigned short *gp2x_memregs;
//static
@ -149,11 +150,10 @@ void gp2x_video_RGB_setscaling(int ln_offs, int W, int H)
}
/* LCD updates @ 80Hz? */
void gp2x_video_wait_vsync(void)
{
gp2x_memregs[0x2846>>1] = 0x20|2; //(gp2x_memregs[0x2846>>1] | 0x20) & ~2;
while(!(gp2x_memregs[0x2846>>1] & 2));// usleep(1);
unsigned short v = gp2x_memregs[0x1182>>1];
while (!((v ^ gp2x_memregs[0x1182>>1]) & 0x10)) spend_cycles(1024);
}

48
platform/gp2x/menu.c
View file

@ -597,7 +597,8 @@ static void draw_savestate_menu(int menu_sel, int is_loading)
static int savestate_menu_loop(int is_loading)
{
int menu_sel = 10, menu_sel_max = 10;
static int menu_sel = 10;
int menu_sel_max = 10;
unsigned long inp = 0;
state_check_slots();
@ -820,7 +821,8 @@ static void draw_cd_menu_options(int menu_sel, char *b_us, char *b_eu, char *b_j
static void cd_menu_loop_options(void)
{
int menu_sel = 0, menu_sel_max = 10;
static int menu_sel = 0;
int menu_sel_max = 10;
unsigned long inp = 0;
char bios_us[32], bios_eu[32], bios_jp[32], *bios, *p;
@ -897,7 +899,7 @@ static void cd_menu_loop_options(void)
static void draw_amenu_options(int menu_sel)
{
int tl_x = 25, tl_y = 60, y;
int tl_x = 25, tl_y = 50, y;
char *mms = mmuhack_status ? "active) " : "inactive)";
y = tl_y;
@ -905,14 +907,16 @@ static void draw_amenu_options(int menu_sel)
gp2x_pd_clone_buffer2();
gp2x_text_out8(tl_x, y, "Gamma correction %i.%02i", currentConfig.gamma / 100, currentConfig.gamma%100); // 0
gp2x_text_out8(tl_x, (y+=10), "Emulate Z80 %s", (currentConfig.PicoOpt&0x004)?"ON":"OFF"); // 1
gp2x_text_out8(tl_x, (y+=10), "Emulate YM2612 (FM) %s", (currentConfig.PicoOpt&0x001)?"ON":"OFF"); // 2
gp2x_text_out8(tl_x, (y+=10), "Emulate SN76496 (PSG) %s", (currentConfig.PicoOpt&0x002)?"ON":"OFF"); // 3
gp2x_text_out8(tl_x, (y+=10), "gzip savestates %s", (currentConfig.EmuOpt &0x008)?"ON":"OFF"); // 4
gp2x_text_out8(tl_x, (y+=10), "Don't save last used ROM %s", (currentConfig.EmuOpt &0x020)?"ON":"OFF"); // 5
gp2x_text_out8(tl_x, (y+=10), "A_SN's gamma curve %s", (currentConfig.EmuOpt &0x1000)?"ON":"OFF");
gp2x_text_out8(tl_x, (y+=10), "Perfecf vsync %s", (currentConfig.EmuOpt &0x2000)?"ON":"OFF");
gp2x_text_out8(tl_x, (y+=10), "Emulate Z80 %s", (currentConfig.PicoOpt&0x0004)?"ON":"OFF");
gp2x_text_out8(tl_x, (y+=10), "Emulate YM2612 (FM) %s", (currentConfig.PicoOpt&0x0001)?"ON":"OFF");
gp2x_text_out8(tl_x, (y+=10), "Emulate SN76496 (PSG) %s", (currentConfig.PicoOpt&0x0002)?"ON":"OFF"); // 5
gp2x_text_out8(tl_x, (y+=10), "gzip savestates %s", (currentConfig.EmuOpt &0x0008)?"ON":"OFF");
gp2x_text_out8(tl_x, (y+=10), "Don't save last used ROM %s", (currentConfig.EmuOpt &0x0020)?"ON":"OFF");
gp2x_text_out8(tl_x, (y+=10), "needs restart:");
gp2x_text_out8(tl_x, (y+=10), "craigix's RAM timings %s", (currentConfig.EmuOpt &0x100)?"ON":"OFF"); // 7
gp2x_text_out8(tl_x, (y+=10), "squidgehack (now %s %s", mms, (currentConfig.EmuOpt &0x010)?"ON":"OFF"); // 8
gp2x_text_out8(tl_x, (y+=10), "craigix's RAM timings %s", (currentConfig.EmuOpt &0x0100)?"ON":"OFF");
gp2x_text_out8(tl_x, (y+=10), "squidgehack (now %s %s", mms, (currentConfig.EmuOpt &0x0010)?"ON":"OFF"); // 10
gp2x_text_out8(tl_x, (y+=10), "Done");
// draw cursor
@ -923,7 +927,8 @@ static void draw_amenu_options(int menu_sel)
static void amenu_loop_options(void)
{
int menu_sel = 0, menu_sel_max = 9;
static int menu_sel = 0;
int menu_sel_max = 11;
unsigned long inp = 0;
for(;;)
@ -934,14 +939,16 @@ static void amenu_loop_options(void)
if(inp & GP2X_DOWN) { menu_sel++; if (menu_sel > menu_sel_max) menu_sel = 0; }
if((inp& GP2X_B)||(inp&GP2X_LEFT)||(inp&GP2X_RIGHT)) { // toggleable options
switch (menu_sel) {
case 1: currentConfig.PicoOpt^=0x004; break;
case 2: currentConfig.PicoOpt^=0x001; break;
case 3: currentConfig.PicoOpt^=0x002; break;
case 4: currentConfig.EmuOpt ^=0x008; break;
case 5: currentConfig.EmuOpt ^=0x020; break;
case 7: currentConfig.EmuOpt ^=0x100; break;
case 8: currentConfig.EmuOpt ^=0x010; break;
case 9: return;
case 1: currentConfig.EmuOpt ^=0x1000; break;
case 2: currentConfig.EmuOpt ^=0x2000; break;
case 3: currentConfig.PicoOpt^=0x0004; break;
case 4: currentConfig.PicoOpt^=0x0001; break;
case 5: currentConfig.PicoOpt^=0x0002; break;
case 6: currentConfig.EmuOpt ^=0x0008; break;
case 7: currentConfig.EmuOpt ^=0x0020; break;
case 9: currentConfig.EmuOpt ^=0x0100; break;
case 10: currentConfig.EmuOpt ^=0x0010; break;
case 11: return;
}
}
if(inp & (GP2X_X|GP2X_A)) return;
@ -1098,7 +1105,8 @@ static void menu_options_save(void)
static int menu_loop_options(void)
{
int menu_sel = 0, menu_sel_max = 17;
static int menu_sel = 0;
int menu_sel_max = 17;
unsigned long inp = 0;
if (rom_data) menu_sel_max++;