X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=platform%2Fwin32%2FGenaDrive%2FDirect.cpp;h=da86b16f77a06c9c9adccf1e50e24b6a87000da4;hb=7b3f44c6b677a60b63b092f825a2b6c58166b70c;hp=38c2bd8c3a7e01f9e2b110f43517226cf063cda2;hpb=8f7ed1b8e1ea3afbcee265c94e6e2aad789c4936;p=picodrive.git

diff --git a/platform/win32/GenaDrive/Direct.cpp b/platform/win32/GenaDrive/Direct.cpp
index 38c2bd8..da86b16 100644
--- a/platform/win32/GenaDrive/Direct.cpp
+++ b/platform/win32/GenaDrive/Direct.cpp
@@ -160,7 +160,9 @@ static int DirectClearDDraw(unsigned int colour)
 
 static int DirectPresentDDraw()
 {
-  int ret = m_pddsFrontBuffer->Blt(&FrameRectMy, m_pddsBackBuffer, &EmuScreenRect, DDBLT_WAIT, NULL);
+  int ret = 0;
+  if (FrameRectMy.right - FrameRectMy.left > 0 && FrameRectMy.bottom - FrameRectMy.top > 0)
+    ret = m_pddsFrontBuffer->Blt(&FrameRectMy, m_pddsBackBuffer, &EmuScreenRect, DDBLT_WAIT, NULL);
   if (ret) { LOGFAIL(); return 1; }
   return 0;
 }
@@ -303,6 +305,8 @@ int DirectPresent()
 }
 
 #ifdef USE_D3D
+#define PI 3.14159265f
+
 static int MakeVertexList()
 {
   struct CustomVertex *vert=NULL,*pv=NULL;