X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=pico%2Fdraw.c;h=bb051b6d9a89d3db11b907fefb243de538da4e76;hb=cf07a88d6eaa0e7719c498ef838ef175512a2bc4;hp=6408f205b84d70dd32f6273687da452550041834;hpb=c041308933a54fce3b1e98b0228e19f96475ae40;p=picodrive.git

diff --git a/pico/draw.c b/pico/draw.c
index 6408f20..bb051b6 100644
--- a/pico/draw.c
+++ b/pico/draw.c
@@ -261,7 +261,11 @@ static void DrawStripVSRam(struct TileStrip *ts, int plane_sh, int cellskip)
   // Draw tiles across screen:
   tilex=(-ts->hscroll)>>3;
   dx=((ts->hscroll-1)&7)+1;
-  if(dx != 8) cell--; // have hscroll, start with negative cell
+  if (ts->hscroll & 0x0f) {
+    int adj = ((ts->hscroll ^ dx) >> 3) & 1;
+    cell -= adj + 1;
+    ts->cells -= adj;
+  }
   cell+=cellskip;
   tilex+=cellskip;
   dx+=cellskip<<3;