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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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93
platform/linux/emu.c
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@ -95,7 +95,7 @@ static void draw_cd_leds(void)
* for display isn't always possible.
*/
static u16 *screen_buffer(u16 *buf)
static inline u16 *screen_buffer(u16 *buf)
{
return buf + screen_y * g_screen_ppitch + screen_x -
(out_y * g_screen_ppitch + out_x);
@ -105,34 +105,46 @@ void screen_blit(u16 *pd, int pp, u8* ps, int ss, u16 *pal)
{
typedef void (*upscale_t)
(u16 *di,int ds, u8 *si,int ss, int w,int h, u16 *pal);
upscale_t upscale_hv[] = {
static const upscale_t upscale_256_224_hv[] = {
upscale_rgb_nn_x_4_5_y_16_17, upscale_rgb_snn_x_4_5_y_16_17,
upscale_rgb_bl2_x_4_5_y_16_17, upscale_rgb_bl4_x_4_5_y_16_17,
};
upscale_t upscale_h[] = {
static const upscale_t upscale_256_224_h[] = {
upscale_rgb_nn_x_4_5, upscale_rgb_snn_x_4_5,
upscale_rgb_bl2_x_4_5, upscale_rgb_bl4_x_4_5,
};
upscale_t upscale_v[] = {
static const upscale_t upscale_256_224_v[] = {
upscale_rgb_nn_y_16_17, upscale_rgb_snn_y_16_17,
upscale_rgb_bl2_y_16_17, upscale_rgb_bl4_y_16_17,
};
upscale_t *upscale;
static const upscale_t upscale_160_144_hv[] = {
upscale_rgb_nn_x_1_2_y_3_5, upscale_rgb_nn_x_1_2_y_3_5,
upscale_rgb_bl2_x_1_2_y_3_5, upscale_rgb_bl4_x_1_2_y_3_5,
};
static const upscale_t upscale_160_144_h[] = {
upscale_rgb_nn_x_1_2, upscale_rgb_nn_x_1_2,
upscale_rgb_bl2_x_1_2, upscale_rgb_bl2_x_1_2,
};
static const upscale_t upscale_160_144_v[] = {
upscale_rgb_nn_y_3_5, upscale_rgb_nn_y_3_5,
upscale_rgb_bl2_y_3_5, upscale_rgb_bl4_y_3_5,
};
const upscale_t *upscale;
int y;
// handle software upscaling
upscale = NULL;
if (currentConfig.scaling == EOPT_SCALE_SW && out_w == 256) {
if (currentConfig.vscaling == EOPT_SCALE_SW && out_h <= 224)
// h+v scaling
upscale = upscale_hv;
else
// h scaling
upscale = upscale_h;
} else if (currentConfig.vscaling == EOPT_SCALE_SW && out_h <= 224) {
// v scaling
upscale = upscale_v;
} else {
if (currentConfig.scaling == EOPT_SCALE_SW) {
if (currentConfig.vscaling == EOPT_SCALE_SW && out_h <= 224)
// h+v scaling
upscale = out_w == 256 ? upscale_256_224_hv: upscale_160_144_hv;
else
// h scaling
upscale = out_w == 256 ? upscale_256_224_h : upscale_160_144_h;
} else if (currentConfig.vscaling == EOPT_SCALE_SW && out_h <= 224)
// v scaling
upscale = out_w == 256 ? upscale_256_224_v : upscale_160_144_v;
if (!upscale) {
// no scaling
for (y = 0; y < out_h; y++)
h_copy(pd, pp, ps, 328, out_w, f_pal);
@ -280,16 +292,16 @@ static int vscale_state;
static int cb_vscaling_begin(unsigned int line)
{
static int prevline = 999;
// at start of new frame?
if (line < prevline) {
// set y frame offset (see emu_change_video_mode)
if (line <= out_y) {
// set y frame offset (see emu_video_mode_change)
Pico.est.DrawLineDest = screen_buffer(g_screen_ptr) +
(out_y * g_screen_ppitch + out_x);
(out_y * g_screen_ppitch /*+ out_x*/);
vscale_state = 0;
}
prevline = line;
return out_y - line;
} else if (line > out_y + out_h)
return 1;
return 0;
}
@ -301,16 +313,25 @@ static int cb_vscaling_nop(unsigned int line)
static int cb_vscaling_end(unsigned int line)
{
u16 *dest = Pico.est.DrawLineDest;
switch (currentConfig.filter) {
case 3: v_upscale_bl4_16_17(dest, g_screen_ppitch, 320, vscale_state);
break;
case 2: v_upscale_bl2_16_17(dest, g_screen_ppitch, 320, vscale_state);
break;
case 1: v_upscale_snn_16_17(dest, g_screen_ppitch, 320, vscale_state);
break;
default: v_upscale_nn_16_17(dest, g_screen_ppitch, 320, vscale_state);
break;
}
if (out_h == 144)
switch (currentConfig.filter) {
case 0: v_upscale_nn_3_5(dest, g_screen_ppitch, 320, vscale_state);
break;
default: v_upscale_snn_3_5(dest, g_screen_ppitch, 320, vscale_state);
break;
}
else
switch (currentConfig.filter) {
case 3: v_upscale_bl4_16_17(dest, g_screen_ppitch, 320, vscale_state);
break;
case 2: v_upscale_bl2_16_17(dest, g_screen_ppitch, 320, vscale_state);
break;
case 1: v_upscale_snn_16_17(dest, g_screen_ppitch, 320, vscale_state);
break;
default: v_upscale_nn_16_17(dest, g_screen_ppitch, 320, vscale_state);
break;
}
Pico.est.DrawLineDest = dest;
return 0;
}
@ -337,10 +358,10 @@ void emu_video_mode_change(int start_line, int line_count, int start_col, int co
}
switch (currentConfig.vscaling) {
case EOPT_SCALE_HW:
screen_h = (out_h < 224 ? 224 : out_h);
screen_h = (out_h < 224 && out_h > 144 ? 224 : out_h);
screen_y = 0;
// NTSC always has 224 visible lines, anything smaller has bars
if (out_h < 224)
if (out_h < 224 && out_h > 144)
screen_y += (224 - out_h)/2;
// handle vertical centering for 16 bit mode
if (is_16bit_mode())
@ -349,7 +370,7 @@ void emu_video_mode_change(int start_line, int line_count, int start_col, int co
case EOPT_SCALE_SW:
screen_y = (screen_h - 240)/2;
// NTSC always has 224 visible lines, anything smaller has bars
if (out_h < 224)
if (out_h < 224 && out_h > 144)
screen_y += (224 - out_h)/2;
// in 16 bit mode sw scaling is divided between core and platform
if (is_16bit_mode() && out_h < 240)