Changeset 67972 in vbox for trunk/src/VBox/Devices/Graphics/DevVGA-SVGA3d-shared.cpp

Timestamp:

Jul 14, 2017 1:44:02 PM (8 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

116974

Message:

bugref:8863: several DevVGA-SVGA fixes

File:

• trunk/src/VBox/Devices/Graphics/DevVGA-SVGA3d-shared.cpp (modified) (1 diff)

trunk/src/VBox/Devices/Graphics/DevVGA-SVGA3d-shared.cpp

@@ -1052 +1052 @@
 #endif /* LOG_ENABLED */
 
+/** Unsigned coordinates in pBox. Clip to [0; pSizeSrc), [0;pSizeDest).
+ *
+ * @param pSizeSrc  Source surface dimensions.
+ * @param pSizeDest Destination surface dimensions.
+ * @param pBox      Coordinates to be clipped.
+ */
+void vmsvgaClipCopyBox(const SVGA3dSize *pSizeSrc,
+                       const SVGA3dSize *pSizeDest,
+                       SVGA3dCopyBox *pBox)
+{
+    /* Src x, w */
+    if (pBox->srcx > pSizeSrc->width)
+        pBox->srcx = pSizeSrc->width;
+    if (pBox->w > pSizeSrc->width - pBox->srcx)
+        pBox->w = pSizeSrc->width - pBox->srcx;
+
+    /* Src y, h */
+    if (pBox->srcy > pSizeSrc->height)
+        pBox->srcy = pSizeSrc->height;
+    if (pBox->h > pSizeSrc->height - pBox->srcy)
+        pBox->h = pSizeSrc->height - pBox->srcy;
+
+    /* Src z, d */
+    if (pBox->srcz > pSizeSrc->depth)
+        pBox->srcz = pSizeSrc->depth;
+    if (pBox->d > pSizeSrc->depth - pBox->srcz)
+        pBox->d = pSizeSrc->depth - pBox->srcz;
+
+    /* Dest x, w */
+    if (pBox->x > pSizeDest->width)
+        pBox->x = pSizeDest->width;
+    if (pBox->w > pSizeDest->width - pBox->x)
+        pBox->w = pSizeDest->width - pBox->x;
+
+    /* Dest y, h */
+    if (pBox->y > pSizeDest->height)
+        pBox->y = pSizeDest->height;
+    if (pBox->h > pSizeDest->height - pBox->y)
+        pBox->h = pSizeDest->height - pBox->y;
+
+    /* Dest z, d */
+    if (pBox->z > pSizeDest->depth)
+        pBox->z = pSizeDest->depth;
+    if (pBox->d > pSizeDest->depth - pBox->z)
+        pBox->d = pSizeDest->depth - pBox->z;
+}
+
+/** Unsigned coordinates in pBox. Clip to [0; pSize).
+ *
+ * @param pSize     Source surface dimensions.
+ * @param pBox      Coordinates to be clipped.
+ */
+void vmsvgaClipBox(const SVGA3dSize *pSize,
+                   SVGA3dBox *pBox)
+{
+    /* x, w */
+    if (pBox->x > pSize->width)
+        pBox->x = pSize->width;
+    if (pBox->w > pSize->width - pBox->x)
+        pBox->w = pSize->width - pBox->x;
+
+    /* y, h */
+    if (pBox->y > pSize->height)
+        pBox->y = pSize->height;
+    if (pBox->h > pSize->height - pBox->y)
+        pBox->h = pSize->height - pBox->y;
+
+    /* z, d */
+    if (pBox->z > pSize->depth)
+        pBox->z = pSize->depth;
+    if (pBox->d > pSize->depth - pBox->z)
+        pBox->d = pSize->depth - pBox->z;
+}