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Added support for testing video flipping with graywin.c

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--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40539
This commit is contained in:
Sam Lantinga 2002-11-09 05:52:49 +00:00
parent 7af0922b86
commit ef6f54e336
1 changed files with 27 additions and 13 deletions
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40
test/graywin.c
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@ -36,7 +36,11 @@ void DrawBox(SDL_Surface *screen, int X, int Y, int width, int height)
/* Do it! */
SDL_FillRect(screen, &area, color);
SDL_UpdateRects(screen, 1, &area);
if ( screen->flags & SDL_DOUBLEBUF ) {
SDL_Flip(screen);
} else {
SDL_UpdateRects(screen, 1, &area);
}
}
SDL_Surface *CreateScreen(Uint16 w, Uint16 h, Uint8 bpp, Uint32 flags)
@ -65,18 +69,25 @@ SDL_Surface *CreateScreen(Uint16 w, Uint16 h, Uint8 bpp, Uint32 flags)
SDL_SetColors(screen, palette, 0, NUM_COLORS);
/* Set the surface pixels and refresh! */
if ( SDL_LockSurface(screen) < 0 ) {
fprintf(stderr, "Couldn't lock display surface: %s\n",
SDL_GetError());
return(NULL);
/* Use two loops in case the surface is double-buffered (both sides) */
for ( i=0; i<2; ++i ) {
if ( SDL_LockSurface(screen) < 0 ) {
fprintf(stderr, "Couldn't lock display surface: %s\n",
SDL_GetError());
return(NULL);
}
buffer = (Uint8 *)screen->pixels;
for ( i=0; i<screen->h; ++i ) {
memset(buffer,(i*(NUM_COLORS-1))/screen->h, screen->w * screen->format->BytesPerPixel);
buffer += screen->pitch;
}
SDL_UnlockSurface(screen);
if ( screen->flags & SDL_DOUBLEBUF ) {
SDL_Flip(screen);
} else {
SDL_UpdateRect(screen, 0, 0, 0, 0);
}
}
buffer = (Uint8 *)screen->pixels;
for ( i=0; i<screen->h; ++i ) {
memset(buffer,(i*(NUM_COLORS-1))/screen->h, screen->w * screen->format->BytesPerPixel);
buffer += screen->pitch;
}
SDL_UnlockSurface(screen);
SDL_UpdateRect(screen, 0, 0, 0, 0);
return(screen);
}
@ -120,13 +131,16 @@ int main(int argc, char *argv[])
if ( argv[argc] && (strcmp(argv[argc], "-hwpalette") == 0) ) {
videoflags |= SDL_HWPALETTE;
} else
if ( argv[argc] && (strcmp(argv[argc], "-flip") == 0) ) {
videoflags |= SDL_DOUBLEBUF;
} else
if ( argv[argc] && (strcmp(argv[argc], "-noframe") == 0) ) {
videoflags |= SDL_NOFRAME;
} else
if ( argv[argc] && (strcmp(argv[argc], "-fullscreen") == 0) ) {
videoflags |= SDL_FULLSCREEN;
} else {
fprintf(stderr, "Usage: %s [-width] [-height] [-bpp] [-hw] [-hwpalette] [-noframe] [-fullscreen]\n",
fprintf(stderr, "Usage: %s [-width] [-height] [-bpp] [-hw] [-hwpalette] [-flip] [-noframe] [-fullscreen]\n",
argv[0]);
exit(1);
}