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sms, basic gamegear support

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This commit is contained in:
kub 2021-10-13 21:30:54 +02:00
parent 0df7401c02
commit 466fa07953
16 changed files with 451 additions and 214 deletions
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47
platform/gp2x/emu.c
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@ -105,7 +105,7 @@ static void change_renderer(int diff)
}
#define is_16bit_mode() \
(currentConfig.renderer == RT_16BIT || (PicoIn.AHW & PAHW_32X))
(currentConfig.renderer == RT_16BIT || (PicoIn.AHW & PAHW_32X) || doing_bg_frame)
static void (*osd_text)(int x, int y, const char *text);
@ -248,7 +248,7 @@ static int EmuScanEnd8_rot(unsigned int num)
/* line doublers */
static unsigned int ld_counter;
static int ld_left, ld_lines;
static int ld_left, ld_lines; // numbers in Q1 format
static int EmuScanBegin16_ld(unsigned int num)
{
@ -271,9 +271,9 @@ static int EmuScanEnd16_ld(unsigned int num)
emu_scan_end(ld_counter);
ld_counter++;
ld_left--;
ld_left -= 2;
if (ld_left <= 0) {
ld_left = ld_lines;
ld_left += ld_lines;
EmuScanBegin16_ld(num);
memcpy(Pico.est.DrawLineDest, oldline, 320 * gp2x_current_bpp / 8);
@ -313,6 +313,7 @@ static int make_local_pal_md(int fast_mode)
else if (Pico.video.reg[0xC] & 8) { // shadow/hilight mode
bgr444_to_rgb32(localPal, Pico.est.SonicPal);
bgr444_to_rgb32_sh(localPal, Pico.est.SonicPal);
memcpy(localPal+0xc0, localPal, 0x40*4); // for spr prio mess
}
else {
bgr444_to_rgb32(localPal, Pico.est.SonicPal);
@ -331,18 +332,7 @@ static int make_local_pal_md(int fast_mode)
static int make_local_pal_sms(int fast_mode)
{
unsigned short *spal = PicoMem.cram;
unsigned int *dpal = (void *)localPal;
unsigned int i, t;
for (i = 0x40; i > 0; i--) {
t = *spal++;
t = ((t & 0x0003) << 22) | ((t & 0x000c) << 12) | ((t & 0x0030) << 2);
t |= t >> 2;
t |= t >> 4;
*dpal++ = t;
}
bgr444_to_rgb32(localPal, PicoMem.cram);
Pico.m.dirtyPal = 0;
return 0x40;
}
@ -486,6 +476,9 @@ static void vid_reset_mode(void)
int gp2x_mode = 16;
int renderer = get_renderer();
if (doing_bg_frame)
renderer = RT_16BIT;
PicoIn.opt &= ~POPT_ALT_RENDERER;
emu_scan_begin = NULL;
emu_scan_end = NULL;
@ -557,11 +550,13 @@ static void vid_reset_mode(void)
Pico.m.dirtyPal = 1;
PicoIn.opt &= ~POPT_EN_SOFTSCALE;
PicoIn.opt &= ~(POPT_DIS_32C_BORDER|POPT_EN_SOFTSCALE);
if (currentConfig.scaling == EOPT_SCALE_SW) {
PicoIn.opt |= POPT_EN_SOFTSCALE;
PicoIn.filter = EOPT_FILTER_BILINEAR2;
}
} else if (currentConfig.scaling == EOPT_SCALE_HW && is_16bit_mode())
// hw scaling, render without any padding
PicoIn.opt |= POPT_DIS_32C_BORDER;
// palette converters for 8bit modes
make_local_pal = (PicoIn.AHW & PAHW_SMS) ? make_local_pal_sms : make_local_pal_md;
@ -572,6 +567,12 @@ void emu_video_mode_change(int start_line, int line_count, int start_col, int co
int scalex = 320, scaley = 240;
int ln_offs = 0;
/* line doubling for swscaling, also needed for bg frames */
if (currentConfig.vscaling == EOPT_SCALE_SW && line_count < 240) {
ld_lines = ld_left = 2*line_count / (240 - line_count);
PicoDrawSetCallbacks(EmuScanBegin16_ld, EmuScanEnd16_ld);
}
if (doing_bg_frame)
return;
@ -579,10 +580,8 @@ void emu_video_mode_change(int start_line, int line_count, int start_col, int co
osd_y = 232;
/* set up hwscaling here */
PicoIn.opt &= ~POPT_DIS_32C_BORDER;
if (col_count < 320 && currentConfig.scaling == EOPT_SCALE_HW) {
scalex = col_count;
PicoIn.opt |= POPT_DIS_32C_BORDER;
osd_fps_x = col_count - (320-OSD_FPS_X);
}
@ -594,11 +593,6 @@ void emu_video_mode_change(int start_line, int line_count, int start_col, int co
gp2x_video_RGB_setscaling(ln_offs, scalex, scaley);
/* line doubling */
if (currentConfig.vscaling == EOPT_SCALE_SW && line_count < 240) {
ld_lines = ld_left = line_count / (240 - line_count);
PicoDrawSetCallbacks(EmuScanBegin16_ld, EmuScanEnd16_ld);
}
// clear whole screen in all buffers
if (!is_16bit_mode())
@ -731,6 +725,8 @@ void pemu_forced_frame(int no_scale, int do_emu)
doing_bg_frame = 1;
PicoDrawSetCallbacks(NULL, NULL);
Pico.m.dirtyPal = 1;
PicoIn.opt &= ~POPT_DIS_32C_BORDER;
gp2x_current_bpp = 16;
if (!no_scale)
no_scale = currentConfig.scaling == EOPT_SCALE_NONE;
@ -749,6 +745,7 @@ void plat_video_loop_prepare(void)
// make sure we are in correct mode
change_renderer(0);
vid_reset_mode();
rendstatus_old = -1;
}
void pemu_loop_prep(void)