pandory500/SDL-mirror
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extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%403247
This commit is contained in:
Sam Lantinga 2008-11-25 02:21:53 +00:00
parent de690ebe5d
commit a733eee1b8
10 changed files with 120 additions and 113 deletions
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106
src/video/SDL_surface.c
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@ -271,68 +271,68 @@ SDL_SetColorKey(SDL_Surface * surface, Uint32 flag, Uint32 key)
/* This is a fairly slow function to switch from colorkey to alpha */
void
SDL_ConvertColorkeyToAlpha(SDL_Surface *surface)
SDL_ConvertColorkeyToAlpha(SDL_Surface * surface)
{
int x, y;
int x, y;
if (!surface) {
return;
}
if (!surface) {
return;
}
if (!(surface->map->info.flags & SDL_COPY_COLORKEY) ||
!surface->format->Amask) {
return;
}
if (!(surface->map->info.flags & SDL_COPY_COLORKEY) ||
!surface->format->Amask) {
return;
}
SDL_LockSurface(surface);
SDL_LockSurface(surface);
switch (surface->format->BytesPerPixel) {
case 2:
{
Uint16 *row, *spot;
Uint16 ckey = (Uint16)surface->map->info.colorkey;
Uint16 mask = (Uint16)(~surface->format->Amask);
switch (surface->format->BytesPerPixel) {
case 2:
{
Uint16 *row, *spot;
Uint16 ckey = (Uint16) surface->map->info.colorkey;
Uint16 mask = (Uint16) (~surface->format->Amask);
row = (Uint16 *)surface->pixels;
for (y = surface->h; y--; ) {
spot = row;
for (x = surface->w; x--; ) {
if (*spot == ckey) {
*spot &= mask;
}
++spot;
}
row += surface->pitch / 2;
}
}
break;
case 3:
/* FIXME */
break;
case 4:
{
Uint32 *row, *spot;
Uint32 ckey = surface->map->info.colorkey;
Uint32 mask = ~surface->format->Amask;
row = (Uint16 *) surface->pixels;
for (y = surface->h; y--;) {
spot = row;
for (x = surface->w; x--;) {
if (*spot == ckey) {
*spot &= mask;
}
++spot;
}
row += surface->pitch / 2;
}
}
break;
case 3:
/* FIXME */
break;
case 4:
{
Uint32 *row, *spot;
Uint32 ckey = surface->map->info.colorkey;
Uint32 mask = ~surface->format->Amask;
row = (Uint32 *)surface->pixels;
for (y = surface->h; y--; ) {
spot = row;
for (x = surface->w; x--; ) {
if (*spot == ckey) {
*spot &= mask;
}
++spot;
}
row += surface->pitch / 4;
}
}
break;
}
row = (Uint32 *) surface->pixels;
for (y = surface->h; y--;) {
spot = row;
for (x = surface->w; x--;) {
if (*spot == ckey) {
*spot &= mask;
}
++spot;
}
row += surface->pitch / 4;
}
}
break;
}
SDL_UnlockSurface(surface);
SDL_UnlockSurface(surface);
SDL_SetColorKey(surface, 0, 0);
SDL_SetColorKey(surface, 0, 0);
}
int