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core+platforms, revise pico pen handling

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the MSB in the tablet position register denotes pen on surface.
add logic and a hotkey for handling pen not on surface. This allows
for repositioning of the pen without the storyware reacting to it.
This commit is contained in:
kub 2024-03-17 10:44:57 +01:00
parent 9f29605f55
commit c87e36d750
12 changed files with 127 additions and 70 deletions
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19
platform/gp2x/emu.c
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@ -194,10 +194,11 @@ static void draw_cd_leds(void)
static void draw_pico_ptr(void)
{
int up = (PicoPicohw.pen_pos[0]|PicoPicohw.pen_pos[1]) & 0x8000;
int x, y, pitch = 320, offs;
x = ((pico_pen_x * colcount * ((1ULL<<32) / 320)) >> 32) + firstcol;
y = ((pico_pen_y * linecount * ((1ULL<<32) / 224)) >> 32) + firstline;
x = ((pico_pen_x * colcount * ((1ULL<<32)/320 + 1)) >> 32) + firstcol;
y = ((pico_pen_y * linecount * ((1ULL<<32)/224 + 1)) >> 32) + firstline;
if (currentConfig.EmuOpt & EOPT_WIZ_TEAR_FIX) {
pitch = 240;
@ -207,16 +208,18 @@ static void draw_pico_ptr(void)
if (is_16bit_mode()) {
unsigned short *p = (unsigned short *)g_screen_ptr + offs;
int o = (up ? 0x0000 : 0xffff), _ = (up ? 0xffff : 0x0000);
p[0] ^= 0xffff;
p[pitch-1] ^= 0xffff; p[pitch] ^= 0xffff; p[pitch+1] ^= 0xffff;
p[pitch*2] ^= 0xffff;
p[-pitch-1] ^= _; p[-pitch] ^= o; p[-pitch+1] ^= _;
p[1] ^= o; p[0] ^= o; p[1] ^= o;
p[pitch-1] ^= _; p[pitch] ^= o; p[pitch+1] ^= _;
} else {
unsigned char *p = (unsigned char *)g_screen_ptr + offs;
int o = (up ? 0xe0 : 0xf0), _ = (up ? 0xf0 : 0xe0);
p[-1] = 0xe0; p[0] = 0xf0; p[1] = 0xe0;
p[pitch-1] = 0xf0; p[pitch] = 0xf0; p[pitch+1] = 0xf0;
p[2*pitch-1] = 0xe0; p[2*pitch] = 0xf0; p[2*pitch+1] = 0xe0;
p[-pitch-1] = _; p[-pitch] = o; p[-pitch+1] = _;
p[-1] = o; p[0] = o; p[1] = o;
p[pitch-1] = _; p[pitch] = o; p[pitch+1] = _;
}
}