Skip blit validation if blit call is "fake" memory to VRAM generated.

diff --git a/qemuvga/cirrus_vga.cpp b/qemuvga/cirrus_vga.cpp
index dcd0e27a8bae5f9676fcbd7e3cad60881c4d66dc..fa12e85643ab979f614fc05aa53c55b95fde2a4f 100644 (file)
--- a/qemuvga/cirrus_vga.cpp
+++ b/qemuvga/cirrus_vga.cpp
@@ -178,7 +178,7 @@ static void check_blit(int32_t addr, uint32_t mask, int pitch, int width, int *h
 {
        int h = *height;
        int32_t off;
-       if (!h || !width)
+       if (!h || !width || (!addr && !mask))
                return;
        addr &= mask;
        off = addr + pitch * (h - 1);