Changeset 89438 in vbox for trunk/src/VBox

Timestamp:

Jun 1, 2021 5:58:34 PM (4 years ago)

Author:

vboxsync

Message:

3D/VMSVGA/WDDM: Use SVGA_REG_DEV_CAP register only if SVGA_CAP_GBOBJECTS is enabled

File:

• trunk/src/VBox/Additions/WINNT/Graphics/Video/mp/wddm/gallium/Svga.cpp (modified) (1 diff)

trunk/src/VBox/Additions/WINNT/Graphics/Video/mp/wddm/gallium/Svga.cpp

@@ -202 +202 @@
     }
 
-    for (i = 0; i < RT_ELEMENTS(pSvgaInfo->au32Caps); ++i)
-    {
-        SVGARegWrite(pSvga, SVGA_REG_DEV_CAP, i);
-        pSvgaInfo->au32Caps[i] = SVGARegRead(pSvga, SVGA_REG_DEV_CAP);
+    if (RT_LIKELY(pSvga->u32Caps & SVGA_CAP_GBOBJECTS))
+    {
+        for (i = 0; i < RT_ELEMENTS(pSvgaInfo->au32Caps); ++i)
+        {
+            SVGARegWrite(pSvga, SVGA_REG_DEV_CAP, i);
+            pSvgaInfo->au32Caps[i] = SVGARegRead(pSvga, SVGA_REG_DEV_CAP);
+        }
     }