libretro/bk-emulator
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Support for the Arcade Mini's screen resolution.

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BK emulator draws to a 32-bits screen surface, making it a bit tricky.
For now, we'll just use DisplayFormat and SDL_SoftStretch.

I'll add more resolutions later.
This commit is contained in:
gameblabla 2019-02-24 04:14:58 +01:00
parent 6b3203c432
commit 67b46ad1b5
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GPG Key ID: B24EFBB23B5F76CB
1 changed files with 35 additions and 12 deletions
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47
scr.c
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@ -4,7 +4,7 @@
#include <libintl.h>
#define _(String) gettext (String)
SDL_Surface * screen;
SDL_Surface * screen, *rl_screen;
flag_t cflag = 0, fullscreen = 0;
int cur_shift = 0;
int cur_width = 0; /* 0 = narrow, !0 = wide */
@ -55,7 +55,7 @@ int lower_porch = 3; /* Default */
// It is unlikely that we get a hardware surface, but one can hope
#define SCREEN_FLAGS \
(SDL_HWSURFACE|SDL_HWACCEL|SDL_ASYNCBLIT|SDL_DOUBLEBUF|SDL_ANYFORMAT|SDL_HWPALETTE|(fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE))
(SDL_HWSURFACE|SDL_HWACCEL|SDL_ASYNCBLIT|SDL_ANYFORMAT|SDL_HWPALETTE|(fullscreen ? SDL_FULLSCREEN : SDL_RESIZABLE))
Uint16 horbase[513], vertbase[257];
@ -71,6 +71,22 @@ static inline void putpixels(SDL_Surface * s, int x, Uint32 pixel)
do *p++ = pixel; while (--n);
}
static void Refresh_screen(void)
{
SDL_Surface* tmp;
tmp = SDL_DisplayFormat(screen);
SDL_SoftStretch(tmp, NULL, rl_screen, NULL);
SDL_FreeSurface(tmp);
SDL_Flip(rl_screen);
}
void Quit_SDL(void)
{
if (screen) SDL_FreeSurface(screen);
if (rl_screen) SDL_FreeSurface(rl_screen);
SDL_Quit();
}
/*
* Flushes a word into a statically defined scan line;
* scrolling and line doubling are done during blitting. bufno is 0 or 1,
@ -178,12 +194,13 @@ scr_init() {
0xff000000, 0xff0000, 0xff00, 0xff),
compute_icon_mask());
screen = SDL_SetVideoMode(horsize, vertsize, 0, SCREEN_FLAGS);
if (screen == NULL) {
rl_screen = SDL_SetVideoMode(480, 272, 16, SCREEN_FLAGS);
if (rl_screen == NULL) {
fprintf(stderr, _("Couldn't set up video: %s\n"),
SDL_GetError());
exit(1);
}
screen = SDL_CreateRGBSurface(SDL_SWSURFACE, horsize, vertsize, 32, 0, 0, 0, 0);
/* Translation disabled because of an SDL bug */
if (bkmodel == 0) {
@ -323,7 +340,9 @@ void scr_sync() {
* palettes.
*/
void
scr_refresh_bk0010(unsigned shift, unsigned full) {
scr_refresh_bk0010(unsigned shift, unsigned full)
{
static SDL_Surface* tmp;
int blit_all = shift != cur_shift || cur_width != full;
int i;
@ -348,7 +367,8 @@ scr_refresh_bk0010(unsigned shift, unsigned full) {
dstrect.y++;
} while (n--);
if (!update_all) {
SDL_UpdateRect(screen, 0, vertbase[i], width, vertstretch);
Refresh_screen();
//SDL_UpdateRect(screen, 0, vertbase[i], width, vertstretch);
}
}
}
@ -363,8 +383,9 @@ scr_refresh_bk0010(unsigned shift, unsigned full) {
}
cur_width = full;
cur_shift = shift;
if (update_all) {
SDL_Flip(screen);
if (update_all)
{
Refresh_screen();
}
scr_dirty = 0;
}
@ -401,7 +422,8 @@ scr_refresh_bk0011_1(unsigned shift, unsigned full) {
}
SDL_BlitSurface(l, &srcrect, screen, &dstrect);
if (!update_all) {
SDL_UpdateRect(screen, 0, dstrect.y, width, 1);
//SDL_UpdateRect(screen, 0, dstrect.y, width, 1);
Refresh_screen();
}
}
}
@ -416,7 +438,7 @@ scr_refresh_bk0011_1(unsigned shift, unsigned full) {
cur_width = full;
cur_shift = shift;
if (update_all) {
SDL_Flip(screen);
Refresh_screen();
}
scr_dirty = 0;
change_req >>= 1;
@ -452,7 +474,8 @@ scr_refresh_bk0011_2(unsigned shift, unsigned full) {
}
SDL_BlitSurface(l, &srcrect, screen, &dstrect);
if (!update_all) {
SDL_UpdateRect(screen, 0, dstrect.y, width, 1);
//SDL_UpdateRect(screen, 0, dstrect.y, width, 1);
Refresh_screen();
}
}
}
@ -467,7 +490,7 @@ scr_refresh_bk0011_2(unsigned shift, unsigned full) {
cur_width = full;
cur_shift = shift;
if (update_all) {
SDL_Flip(screen);
Refresh_screen();
}
scr_dirty = 0;
change_req >>= 1;