[uae] Re: SDL speedup
- From: blynel@xxxxxxxxxx
- To: uae@xxxxxxxxxxxxx
- Date: Fri, 12 Nov 2004 23:16:18 +0100
Some lines got wrapped :(
I have attached the patch in stead.
Jesper
--- sdlgfx.c 2004-10-26 07:42:20.000000000 +0200
+++ sdlgfx.c.new 2004-11-12 20:35:56.504922840 +0100
@@ -131,22 +131,40 @@
/* Not implemented for SDL output */
}
+static int pending_flush = 0;
+static int ystart_p, ystop_p;
+
void flush_block (int ystart, int ystop)
{
DEBUG_LOG ("Function: flush_block %d %d\n", ystart, ystop);
- SDL_UnlockSurface (prSDLScreen);
- SDL_UpdateRect (prSDLScreen, 0, ystart, current_width, ystop - ystart + 1);
- SDL_LockSurface (prSDLScreen);
+ if (pending_flush) {
+ if (ystart <= ystop_p + 2) {
+ /* merge with pending flush */
+ ystop_p = ystop;
+ } else {
+ /* do previous pending flush and make this flush pending */
+ SDL_UpdateRect (prSDLScreen, 0, ystart_p, current_width, ystop_p -
ystart_p + 1);
+ ystart_p = ystart;
+ ystop_p = ystop;
+ }
+ } else {
+ /* make this flush pending */
+ ystart_p = ystart;
+ ystop_p = ystop;
+ pending_flush = 1;
+ }
}
void flush_screen (int ystart, int ystop)
{
DEBUG_LOG ("Function: flush_screen\n");
-#if 0
- SDL_UpdateRect(prSDLScreen, 0, 0, current_width, current_height);
-#endif
+ if (prSDLScreen) {
+ SDL_Rect rect = { 0, 0, prSDLScreen->w, prSDLScreen->h };
+ SDL_FillRect (prSDLScreen, &rect, SDL_MapRGB (prSDLScreen->format,
0,0,0));
+ SDL_UpdateRect (prSDLScreen, 0, 0, rect.w, rect.h);
+ }
}
void flush_clear_screen (void)
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