Changeset 44999 in vbox for trunk/src/VBox

Timestamp:

Mar 11, 2013 4:57:48 PM (12 years ago)

Author:

vboxsync

Message:

Additions/x11/vboxvideo: no need for 64-bit maths here.

File:

• trunk/src/VBox/Additions/x11/vboxvideo/vboxvideo.h (modified) (3 diffs)

trunk/src/VBox/Additions/x11/vboxvideo/vboxvideo.h

@@ -55 +55 @@
 #include <VBox/VBoxVideoGuest.h>
 #include <VBox/VBoxVideo.h>
-#include <iprt/asm-math.h>
 
 #ifdef DEBUG
@@ -259 +258 @@
 static inline int32_t vboxLineLength(ScrnInfoPtr pScrn, int32_t cDisplayWidth)
 {
-    uint64_t cbLine = ((uint64_t)cDisplayWidth * vboxBPP(pScrn) / 8 + 3) & ~3;
+    uint32_t cbLine = (cDisplayWidth * vboxBPP(pScrn) / 8 + 3) & ~3;
     return cbLine < INT32_MAX ? cbLine : INT32_MAX;
 }
@@ -266 +265 @@
 static inline int32_t vboxDisplayPitch(ScrnInfoPtr pScrn, int32_t cbLine)
 {
-    /* take care not to reference __udivdi3! */
-    return ASMDivU64ByU32RetU32((uint64_t)cbLine * 8, vboxBPP(pScrn));
+    return cbLine * 8 / vboxBPP(pScrn);
 }