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reduce SDL_Setvideo calls to avoid flickering with TRIPLEBUF

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This commit is contained in:
kub 2022-03-04 19:38:41 +00:00
parent 74cb846a3a
commit 533726df95
1 changed files with 19 additions and 12 deletions
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31
plat_sdl.c
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@ -28,9 +28,10 @@ void (*plat_sdl_resize_cb)(int w, int h);
void (*plat_sdl_quit_cb)(void); void (*plat_sdl_quit_cb)(void);
static char vid_drv_name[32]; static char vid_drv_name[32];
static int window_w, window_h; static int window_w, window_h, window_b;
static int fs_w, fs_h; static int fs_w, fs_h;
static int old_fullscreen; static int old_fullscreen;
static int screen_flags;
static int vout_mode_overlay = -1, vout_mode_overlay2x = -1, vout_mode_gl = -1; static int vout_mode_overlay = -1, vout_mode_overlay2x = -1, vout_mode_gl = -1;
static void *display, *window; static void *display, *window;
static int gl_quirks; static int gl_quirks;
@ -90,7 +91,10 @@ int plat_sdl_change_video_mode(int w, int h, int force)
// (seen on r-pi) // (seen on r-pi)
SDL_PumpEvents(); SDL_PumpEvents();
plat_sdl_screen = SDL_SetVideoMode(win_w, win_h, 0, flags); if (!plat_sdl_screen || screen_flags != flags ||
plat_sdl_screen->w != win_w || plat_sdl_screen->h != win_h)
plat_sdl_screen = SDL_SetVideoMode(win_w, win_h, 0, flags);
screen_flags = flags;
if (plat_sdl_screen == NULL) { if (plat_sdl_screen == NULL) {
fprintf(stderr, "SDL_SetVideoMode failed: %s\n", SDL_GetError()); fprintf(stderr, "SDL_SetVideoMode failed: %s\n", SDL_GetError());
plat_target.vout_method = 0; plat_target.vout_method = 0;
@ -99,7 +103,7 @@ int plat_sdl_change_video_mode(int w, int h, int force)
if (plat_target.vout_method == vout_mode_overlay if (plat_target.vout_method == vout_mode_overlay
|| plat_target.vout_method == vout_mode_overlay2x) { || plat_target.vout_method == vout_mode_overlay2x) {
int W = plat_target.vout_method == vout_mode_overlay2x && w == 320 ? 2*w : w; int W = plat_target.vout_method == vout_mode_overlay2x && w < 640 ? 2*w : w;
plat_sdl_overlay = SDL_CreateYUVOverlay(W, h, SDL_UYVY_OVERLAY, plat_sdl_screen); plat_sdl_overlay = SDL_CreateYUVOverlay(W, h, SDL_UYVY_OVERLAY, plat_sdl_screen);
if (plat_sdl_overlay != NULL) { if (plat_sdl_overlay != NULL) {
if ((long)plat_sdl_overlay->pixels[0] & 3) if ((long)plat_sdl_overlay->pixels[0] & 3)
@ -140,7 +144,10 @@ int plat_sdl_change_video_mode(int w, int h, int force)
SDL_PumpEvents(); SDL_PumpEvents();
plat_sdl_screen = SDL_SetVideoMode(win_w, win_h, 16, flags); if (!plat_sdl_screen || screen_flags != flags ||
plat_sdl_screen->w != win_w || plat_sdl_screen->h != win_h)
plat_sdl_screen = SDL_SetVideoMode(win_w, win_h, 16, flags);
screen_flags = flags;
if (plat_sdl_screen == NULL) { if (plat_sdl_screen == NULL) {
fprintf(stderr, "SDL_SetVideoMode failed: %s\n", SDL_GetError()); fprintf(stderr, "SDL_SetVideoMode failed: %s\n", SDL_GetError());
return -1; return -1;
@ -165,8 +172,8 @@ void plat_sdl_event_handler(void *event_)
if (plat_target.vout_method != 0 if (plat_target.vout_method != 0
&& !plat_target.vout_fullscreen && !old_fullscreen) && !plat_target.vout_fullscreen && !old_fullscreen)
{ {
window_w = event->resize.w; window_w = event->resize.w & ~3;
window_h = event->resize.h; window_h = event->resize.h & ~3;
plat_sdl_change_video_mode(0, 0, 1); plat_sdl_change_video_mode(0, 0, 1);
} }
break; break;
@ -215,6 +222,8 @@ int plat_sdl_init(void)
if (info != NULL) { if (info != NULL) {
fs_w = info->current_w; fs_w = info->current_w;
fs_h = info->current_h; fs_h = info->current_h;
if (info->wm_available)
window_b = WM_DECORATION_H;
printf("plat_sdl: using %dx%d as fullscreen resolution\n", fs_w, fs_h); printf("plat_sdl: using %dx%d as fullscreen resolution\n", fs_w, fs_h);
} }
@ -224,16 +233,14 @@ int plat_sdl_init(void)
g_menuscreen_h = 480; g_menuscreen_h = 480;
if (fs_h != 0) { if (fs_h != 0) {
h = fs_h; h = fs_h;
if (info && info->wm_available && h > WM_DECORATION_H) if (window_b && h > window_b)
h -= WM_DECORATION_H; h -= window_b;
if (g_menuscreen_h > h) if (g_menuscreen_h > h)
g_menuscreen_h = h; g_menuscreen_h = h;
} }
if (plat_target.vout_fullscreen)
g_menuscreen_w = g_menuscreen_h * fs_w / fs_h;
ret = plat_sdl_change_video_mode(g_menuscreen_w, g_menuscreen_h, 1); plat_sdl_screen = SDL_SetVideoMode(g_menuscreen_w, g_menuscreen_h, 16, SDL_HWSURFACE);
if (ret != 0) { if (plat_sdl_screen == NULL) {
plat_sdl_screen = SDL_SetVideoMode(0, 0, 16, SDL_SWSURFACE); plat_sdl_screen = SDL_SetVideoMode(0, 0, 16, SDL_SWSURFACE);
if (plat_sdl_screen == NULL) { if (plat_sdl_screen == NULL) {
fprintf(stderr, "SDL_SetVideoMode failed: %s\n", SDL_GetError()); fprintf(stderr, "SDL_SetVideoMode failed: %s\n", SDL_GetError());