X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Usermode%2FApplications%2Faxwin3_src%2FWM%2Fvideo.c;h=dfdd2e50e33462b579e81569b8f90e7ce43777d0;hb=4c78a1bdd506cda6cda27ee342165c7dfa7ecdc2;hp=60f2155ef699a8f2d07846c552ec5677db013fc5;hpb=04a050f42807686dc119838c82372409246d55bb;p=tpg%2Facess2.git

diff --git a/Usermode/Applications/axwin3_src/WM/video.c b/Usermode/Applications/axwin3_src/WM/video.c
index 60f2155e..dfdd2e50 100644
--- a/Usermode/Applications/axwin3_src/WM/video.c
+++ b/Usermode/Applications/axwin3_src/WM/video.c
@@ -49,9 +49,10 @@ void Video_Setup(void)
 	giTerminalFD_Input = 0;
 	// Check that the console is a VT
 	// - _SysIOCtl(..., 0, NULL) returns the type, which should be 2
-	if( _SysIOCtl(1, 0, NULL) != 2 )
+	tmpInt = _SysIOCtl(1, 0, NULL);
+	if( tmpInt != 2 )
 	{
-		fprintf(stderr, "stdout is not an Acess VT, can't start");
+		fprintf(stderr, "stdout is not an Acess VT, can't start (2 exp, %i got)\n", tmpInt);
 		_SysDebug("stdout is not an Acess VT, can't start");
 		exit(-1);
 	}
@@ -87,11 +88,11 @@ void Video_Update(void)
 
 	_SysDebug("Video_Update - Updating lines %i to %i (0x%x+0x%x px)",
 		giVideo_FirstDirtyLine, giVideo_LastDirtyLine, ofs, size);
-	_SysSeek(giTerminalFD, ofs*4, 1);
+	_SysSeek(giTerminalFD, ofs*4, SEEK_SET);
 	_SysDebug("Video_Update - Sending FD %i %p 0x%x", giTerminalFD, gpScreenBuffer+ofs, size*4);
 	_SysWrite(giTerminalFD, gpScreenBuffer+ofs, size*4);
 	_SysDebug("Video_Update - Done");
-	giVideo_FirstDirtyLine = 0;
+	giVideo_FirstDirtyLine = giScreenHeight;
 	giVideo_LastDirtyLine = 0;
 }
 
@@ -158,10 +159,8 @@ void Video_Blit(uint32_t *Source, short DstX, short DstY, short W, short H)
 
 	if( W <= 0 || H <= 0 )	return;
 
-	if( DstY < giVideo_FirstDirtyLine )
-		giVideo_FirstDirtyLine = DstY;
-	if( DstY + H > giVideo_LastDirtyLine )
-		giVideo_LastDirtyLine = DstY + H;
+	giVideo_FirstDirtyLine = MIN(DstY, giVideo_FirstDirtyLine);
+	giVideo_LastDirtyLine  = MAX(DstY+H, giVideo_LastDirtyLine);
 	
 	buf = gpScreenBuffer + DstY*giScreenWidth + DstX;
 	if(drawW != giScreenWidth || W != giScreenWidth)