/* functions from SGE library */
void sge_Line(SDL_Surface *, Sint16, Sint16, Sint16, Sint16, Uint32);
-/* #ifdef PLATFORM_WIN32 */
-#define FULLSCREEN_BUG
-/* #endif */
-
/* stuff needed to work around SDL/Windows fullscreen drawing bug */
static int fullscreen_width;
static int fullscreen_height;
static int video_xoffset;
static int video_yoffset;
+static void setFullscreenParameters()
+{
+ struct ScreenModeInfo *fullscreen_mode;
+ int i;
+
+ fullscreen_mode = get_screen_mode_from_string(setup.fullscreen_mode);
+
+ for (i = 0; video.fullscreen_modes[i].width != -1; i++)
+ {
+ if (fullscreen_mode->width == video.fullscreen_modes[i].width &&
+ fullscreen_mode->height == video.fullscreen_modes[i].height)
+ {
+ fullscreen_width = fullscreen_mode->width;
+ fullscreen_height = fullscreen_mode->height;
+
+ fullscreen_xoffset = (fullscreen_width - video.width) / 2;
+ fullscreen_yoffset = (fullscreen_height - video.height) / 2;
+
+ break;
+ }
+ }
+}
+
void SDLInitVideoDisplay(void)
{
putenv("SDL_VIDEO_CENTERED=1");
void SDLInitVideoBuffer(DrawBuffer **backbuffer, DrawWindow **window,
boolean fullscreen)
{
-#ifdef FULLSCREEN_BUG
- int i;
static int screen_xy[][2] =
{
{ 640, 480 },
{ 1024, 768 },
{ -1, -1 }
};
-#endif
+ SDL_Rect **modes;
+ int i, j;
/* default: normal game window size */
fullscreen_width = video.width;
fullscreen_xoffset = 0;
fullscreen_yoffset = 0;
-#ifdef FULLSCREEN_BUG
for (i = 0; screen_xy[i][0] != -1; i++)
{
- if (video.width <= screen_xy[i][0] && video.height <= screen_xy[i][1])
+ if (screen_xy[i][0] >= video.width && screen_xy[i][1] >= video.height)
{
- fullscreen_width = screen_xy[i][0];
+ fullscreen_width = screen_xy[i][0];
fullscreen_height = screen_xy[i][1];
+
break;
}
}
- fullscreen_xoffset = (fullscreen_width - video.width) / 2;
+ fullscreen_xoffset = (fullscreen_width - video.width) / 2;
fullscreen_yoffset = (fullscreen_height - video.height) / 2;
-#endif
+
+ /* get available hardware supported fullscreen modes */
+ modes = SDL_ListModes(NULL, SDL_FULLSCREEN | SDL_HWSURFACE);
+
+ if (modes == NULL)
+ {
+ /* no screen modes available => no fullscreen mode support */
+ video.fullscreen_available = FALSE;
+ }
+ else if (modes == (SDL_Rect **)-1)
+ {
+ /* fullscreen resolution is not restricted -- all resolutions available */
+ video.fullscreen_modes = checked_calloc(2 * sizeof(struct ScreenModeInfo));
+
+ /* use native video buffer size for fullscreen mode */
+ video.fullscreen_modes[0].width = video.width;
+ video.fullscreen_modes[0].height = video.height;
+
+ video.fullscreen_modes[1].width = -1;
+ video.fullscreen_modes[1].height = -1;
+ }
+ else
+ {
+ /* in this case, a certain number of screen modes is available */
+ int num_modes = 0;
+
+ for(i = 0; modes[i] != NULL; i++)
+ {
+ boolean found_mode = FALSE;
+
+ /* screen mode is smaller than video buffer size -- skip it */
+ if (modes[i]->w < video.width || modes[i]->h < video.height)
+ continue;
+
+ if (video.fullscreen_modes != NULL)
+ for (j = 0; video.fullscreen_modes[j].width != -1; j++)
+ if (modes[i]->w == video.fullscreen_modes[j].width &&
+ modes[i]->h == video.fullscreen_modes[j].height)
+ found_mode = TRUE;
+
+ if (found_mode) /* screen mode already stored -- skip it */
+ continue;
+
+ /* new mode found; add it to list of available fullscreen modes */
+
+ num_modes++;
+
+ video.fullscreen_modes = checked_realloc(video.fullscreen_modes,
+ (num_modes + 1) *
+ sizeof(struct ScreenModeInfo));
+
+ video.fullscreen_modes[num_modes - 1].width = modes[i]->w;
+ video.fullscreen_modes[num_modes - 1].height = modes[i]->h;
+
+ video.fullscreen_modes[num_modes].width = -1;
+ video.fullscreen_modes[num_modes].height = -1;
+ }
+
+ if (num_modes == 0)
+ {
+ /* no appropriate screen modes available => no fullscreen mode support */
+ video.fullscreen_available = FALSE;
+ }
+ }
/* open SDL video output device (window or fullscreen mode) */
if (!SDLSetVideoMode(backbuffer, fullscreen))
if (fullscreen && !video.fullscreen_enabled && video.fullscreen_available)
{
+ setFullscreenParameters();
+
video_xoffset = fullscreen_xoffset;
video_yoffset = fullscreen_yoffset;
Bitmap *real_dst_bitmap = (dst_bitmap == window ? backbuffer : dst_bitmap);
SDL_Rect src_rect, dst_rect;
-#ifdef FULLSCREEN_BUG
if (src_bitmap == backbuffer)
{
src_x += video_xoffset;
src_y += video_yoffset;
}
-#endif
src_rect.x = src_x;
src_rect.y = src_y;
src_rect.w = width;
src_rect.h = height;
-#ifdef FULLSCREEN_BUG
if (dst_bitmap == backbuffer || dst_bitmap == window)
{
dst_x += video_xoffset;
dst_y += video_yoffset;
}
-#endif
dst_rect.x = dst_x;
dst_rect.y = dst_y;
Bitmap *real_dst_bitmap = (dst_bitmap == window ? backbuffer : dst_bitmap);
SDL_Rect rect;
-#ifdef FULLSCREEN_BUG
if (dst_bitmap == backbuffer || dst_bitmap == window)
{
x += video_xoffset;
y += video_yoffset;
}
-#endif
rect.x = x;
rect.y = y;
static SDL_Surface *surface_black = NULL;
SDL_Surface *surface_screen = backbuffer->surface;
SDL_Surface *surface_cross; /* initialized later */
- boolean fade_reverse; /* initialized later */
+ SDL_Rect src_rect, dst_rect;
+ int src_x = 0, src_y = 0;
+ int dst_x = 0, dst_y = 0;
+ boolean fade_reverse = (fade_mode == FADE_MODE_FADE_IN ? TRUE : FALSE);
unsigned int time_last, time_current;
float alpha;
int alpha_final;
+ src_rect.x = src_x;
+ src_rect.y = src_y;
+ src_rect.w = video.width;
+ src_rect.h = video.height;
+
+ dst_x += video_xoffset;
+ dst_y += video_yoffset;
+
+ dst_rect.x = dst_x;
+ dst_rect.y = dst_y;
+ dst_rect.w = video.width;
+ dst_rect.h = video.height;
+
+#if 0
+ if (!initialization_needed)
+ {
+ /* check if screen size has changed (can happen when toggling fullscreen) */
+ if (surface_screen_copy->w != surface_screen->w ||
+ surface_screen_copy->h != surface_screen->h)
+ {
+ SDL_FreeSurface(surface_screen_copy);
+ SDL_FreeSurface(surface_black);
+
+ initialization_needed = TRUE;
+ }
+ }
+#endif
+
if (initialization_needed)
{
unsigned int flags = SDL_SRCALPHA;
/* create surface for temporary copy of screen buffer */
if ((surface_screen_copy =
SDL_CreateRGBSurface(flags,
+#if 1
+ video.width,
+ video.height,
+#else
surface_screen->w,
surface_screen->h,
+#endif
surface_screen->format->BitsPerPixel,
surface_screen->format->Rmask,
surface_screen->format->Gmask,
/* create black surface for fading from/to black */
if ((surface_black =
SDL_CreateRGBSurface(flags,
+#if 1
+ video.width,
+ video.height,
+#else
surface_screen->w,
surface_screen->h,
+#endif
surface_screen->format->BitsPerPixel,
surface_screen->format->Rmask,
surface_screen->format->Gmask,
}
/* copy the current screen backbuffer to the temporary screen copy buffer */
- SDL_BlitSurface(surface_screen, NULL, surface_screen_copy, NULL);
+ SDL_BlitSurface(surface_screen, &dst_rect, surface_screen_copy, &src_rect);
- fade_reverse = (fade_mode == FADE_MODE_FADE_IN ? TRUE : FALSE);
surface_cross = (fade_mode == FADE_MODE_CROSSFADE ? bitmap_cross->surface :
surface_black);
alpha_final = MIN(MAX(0, alpha_final), 255);
/* draw existing image to screen buffer */
- SDL_BlitSurface(surface_screen_copy, NULL, surface_screen, NULL);
+ SDL_BlitSurface(surface_screen_copy, &src_rect, surface_screen, &dst_rect);
/* draw new image to screen buffer using alpha blending */
SDL_SetAlpha(surface_cross, SDL_SRCALPHA, alpha_final);
- SDL_BlitSurface(surface_cross, NULL, surface_screen, NULL);
+ SDL_BlitSurface(surface_cross, &src_rect, surface_screen, &dst_rect);
/* draw screen buffer to visible display */
SDL_Flip(surface_screen);
rect.w = (to_x - from_x + 1);
rect.h = (to_y - from_y + 1);
-#ifdef FULLSCREEN_BUG
if (dst_bitmap == backbuffer || dst_bitmap == window)
{
rect.x += video_xoffset;
rect.y += video_yoffset;
}
-#endif
SDL_FillRect(surface, &rect, color);
}
void SDLDrawLine(Bitmap *dst_bitmap, int from_x, int from_y,
int to_x, int to_y, Uint32 color)
{
-#ifdef FULLSCREEN_BUG
if (dst_bitmap == backbuffer || dst_bitmap == window)
{
from_x += video_xoffset;
to_x += video_xoffset;
to_y += video_yoffset;
}
-#endif
sge_Line(dst_bitmap->surface, from_x, from_y, to_x, to_y, color);
}
{
SDL_Surface *surface = src_bitmap->surface;
-#ifdef FULLSCREEN_BUG
if (src_bitmap == backbuffer || src_bitmap == window)
{
x += video_xoffset;
y += video_yoffset;
}
-#endif
switch (surface->format->BytesPerPixel)
{
void SDLPutPixel(Bitmap *dst_bitmap, int x, int y, Pixel pixel)
{
-#ifdef FULLSCREEN_BUG
if (dst_bitmap == backbuffer || dst_bitmap == window)
{
x += video_xoffset;
y += video_yoffset;
}
-#endif
sge_PutPixel(dst_bitmap->surface, x, y, pixel);
}
Uint8 a;
} tColorRGBA;
+int zoomSurfaceRGBA_scaleDownBy2(SDL_Surface *src, SDL_Surface *dst)
+{
+ int x, y;
+ tColorRGBA *sp, *csp, *dp;
+ int sgap, dgap;
+
+ /* pointer setup */
+ sp = csp = (tColorRGBA *) src->pixels;
+ dp = (tColorRGBA *) dst->pixels;
+ sgap = src->pitch - src->w * 4;
+ dgap = dst->pitch - dst->w * 4;
+
+ for (y = 0; y < dst->h; y++)
+ {
+ sp = csp;
+
+ for (x = 0; x < dst->w; x++)
+ {
+ tColorRGBA *sp0 = sp;
+ tColorRGBA *sp1 = (tColorRGBA *) ((Uint8 *) sp + src->pitch);
+ tColorRGBA *sp00 = &sp0[0];
+ tColorRGBA *sp01 = &sp0[1];
+ tColorRGBA *sp10 = &sp1[0];
+ tColorRGBA *sp11 = &sp1[1];
+ tColorRGBA new;
+
+ /* create new color pixel from all four source color pixels */
+ new.r = (sp00->r + sp01->r + sp10->r + sp11->r) / 4;
+ new.g = (sp00->g + sp01->g + sp10->g + sp11->g) / 4;
+ new.b = (sp00->b + sp01->b + sp10->b + sp11->b) / 4;
+ new.a = (sp00->a + sp01->a + sp10->a + sp11->a) / 4;
+
+ /* draw */
+ *dp = new;
+
+ /* advance source pointers */
+ sp += 2;
+
+ /* advance destination pointer */
+ dp++;
+ }
+
+ /* advance source pointer */
+ csp = (tColorRGBA *) ((Uint8 *) csp + 2 * src->pitch);
+
+ /* advance destination pointers */
+ dp = (tColorRGBA *) ((Uint8 *) dp + dgap);
+ }
+
+ return 0;
+}
+
int zoomSurfaceRGBA(SDL_Surface *src, SDL_Surface *dst)
{
int x, y, sx, sy, *sax, *say, *csax, *csay, csx, csy;
tColorRGBA *sp, *csp, *dp;
int sgap, dgap;
+ /* use specialized zoom function when scaling down to exactly half size */
+ if (src->w == 2 * dst->w &&
+ src->h == 2 * dst->h)
+ return zoomSurfaceRGBA_scaleDownBy2(src, dst);
+
/* variable setup */
sx = (int) (65536.0 * (float) src->w / (float) dst->w);
sy = (int) (65536.0 * (float) src->h / (float) dst->h);
{
SDL_WaitEvent(event);
-#ifdef FULLSCREEN_BUG
if (event->type == EVENT_BUTTONPRESS ||
event->type == EVENT_BUTTONRELEASE)
{
else
((MotionEvent *)event)->y = 0;
}
-#endif
}
projects / rocksndiamonds.git / blobdiff