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Warn if copyRectToScreen() is called before _screen is created, since it's

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almost certainly a programming error. (Used to be silently ignored.)

Warn if setPalette() is called before _screen is created, but allow it (for
now) since we don't actually set the palette until later. It could still be a
programming error, though.

Don't crash if updateScreen() is called with a "dirty" palette before _screen
is created.

svn-id: r23573
This commit is contained in:
Torbjörn Andersson 2006-07-23 06:50:49 +00:00
parent a68f7100ce
commit 15f08bf268
1 changed files with 12 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
backends/platform/sdl/graphics.cpp
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@ -539,7 +539,7 @@ void OSystem_SDL::internUpdateScreen() {
// Check whether the palette was changed in the meantime and update the
// screen surface accordingly.
if (_paletteDirtyEnd != 0) {
if (_screen && _paletteDirtyEnd != 0) {
SDL_SetColors(_screen, _currentPalette + _paletteDirtyStart,
_paletteDirtyStart,
_paletteDirtyEnd - _paletteDirtyStart);
@ -779,8 +779,10 @@ void OSystem_SDL::copyRectToScreen(const byte *src, int pitch, int x, int y, int
assert (_transactionMode == kTransactionNone);
assert(src);
if (_screen == NULL)
if (_screen == NULL) {
warning("OSystem_SDL::copyRectToScreen: _screen == NULL");
return;
}
Common::StackLock lock(_graphicsMutex); // Lock the mutex until this function ends
@ -1025,6 +1027,14 @@ int16 OSystem_SDL::getWidth() {
void OSystem_SDL::setPalette(const byte *colors, uint start, uint num) {
assert(colors);
// Setting the palette before _screen is created is allowed - for now -
// since we don't actually set the palette until the screen is updated.
// But it could indicate a programming error, so let's warn about it.
if (!_screen)
warning("OSystem_SDL::setPalette: _screen == NULL");
const byte *b = colors;
uint i;
SDL_Color *base = _currentPalette + start;