Full refresh hardware emulated RTG board display buffer when mode changes.

diff --git a/gfxboard.cpp b/gfxboard.cpp
index c57440c5cc32994cdcba840fb82752e007b3eccd..070224723f0ff0e7114d5a87c42b6a0de4fe5f96 100644 (file)
--- a/gfxboard.cpp
+++ b/gfxboard.cpp
@@ -393,6 +393,8 @@ struct rtggfxboard
        struct pci_board_state *pcibs;
        bool pcem_direct;
 
+       int width_redraw, height_redraw;
+
        void *userdata;
 };
 
@@ -707,6 +709,22 @@ void video_blit_memtoscreen(int x, int y, int y1, int y2, int w, int h)
                                }
                                if (gb->gfxboard_surface) {
                                        struct picasso_vidbuf_description *vidinfo = &picasso_vidinfo[gb->monitor_id];
+                                       if (w != gb->width_redraw || h != gb->height_redraw) {
+                                               for (int y = 0; y < vidinfo->height; y++) {
+                                                       uae_u8 *d = gb->gfxboard_surface + y * vidinfo->rowbytes;
+                                                       if (y < h) {
+                                                               if (vidinfo->width > w) {
+                                                                       memset(d + w * vidinfo->pixbytes, 0, (vidinfo->width - w) * vidinfo->pixbytes);
+                                                               }
+                                                       } else {
+                                                               memset(d, 0, vidinfo->width * vidinfo->pixbytes);
+                                                       }
+                                               }
+                                               gb->width_redraw = w;
+                                               gb->height_redraw = h;
+                                               y1 = 0;
+                                               y2 = h;
+                                       }
                                        for (int yy = y1; yy < y2 && yy < vidinfo->height; yy++) {
                                                uae_u8 *d = gb->gfxboard_surface + yy * vidinfo->rowbytes;
                                                uae_u8 *s = getpcembuffer32(x, y, yy);