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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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23
platform/ps2/emu.c
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@ -710,26 +710,29 @@ static void blit_cdleds(void)
static void draw_pico_ptr(void)
{
int up = (PicoPicohw.pen_pos[0]|PicoPicohw.pen_pos[1]) & 0x8000;
int x = pico_pen_x, y = pico_pen_y, offs;
int pp = g_screen_ppitch;
int pitch = g_screen_ppitch;
x = (x * out_w * ((1ULL<<32) / 320)) >> 32;
y = (y * out_h * ((1ULL<<32) / 224)) >> 32;
x = (x * out_w * ((1ULL<<32) / 320 + 1)) >> 32;
y = (y * out_h * ((1ULL<<32) / 224 + 1)) >> 32;
offs = g_screen_ppitch * (out_y+y) + (out_x+x);
offs = pitch * (out_y+y) + (out_x+x);
if (is_16bit_mode()) {
unsigned short *p = (unsigned short *)g_screen_ptr + offs;
int o = (up ? 0x0000 : 0x7fff), _ = (up ? 0x7fff : 0x0000);
p[ -1] = 0x0000; p[ 0] = 0x001f; p[ 1] = 0x0000;
p[ pp-1] = 0x001f; p[ pp] = 0x001f; p[ pp+1] = 0x001f;
p[2*pp-1] = 0x0000; p[2*pp] = 0x001f; p[2*pp+1] = 0x0000;
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 + 8;
int o = (up ? 0xe0 : 0xf0), _ = (up ? 0xf0 : 0xe0);
p[ -1] = 0xe0; p[ 0] = 0xf0; p[ 1] = 0xe0;
p[ pp-1] = 0xf0; p[ pp] = 0xf0; p[ pp+1] = 0xf0;
p[2*pp-1] = 0xe0; p[2*pp] = 0xf0; p[2*pp+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] = _;
}
}