D3DFMT_A2W10V10U10 fix for ScreenGrab DX9 (#500)

ScreenGrab/ScreenGrab9.cpp

@@ -85,8 +85,9 @@ namespace
 #define DDS_LUMINANCE     0x00020000  // DDPF_LUMINANCE
 #define DDS_LUMINANCEA    0x00020001  // DDPF_LUMINANCE | DDPF_ALPHAPIXELS
 #define DDS_ALPHA         0x00000002  // DDPF_ALPHA
-#define DDS_BUMPDUDV      0x00080000  // DDPF_BUMPDUDV
 #define DDS_BUMPLUMINANCE 0x00040000  // DDPF_BUMPLUMINANCE
+#define DDS_BUMPDUDV      0x00080000  // DDPF_BUMPDUDV
+#define DDS_BUMPDUDVA     0x00080001  // DDPF_BUMPDUDV | DDPF_ALPHAPIXELS
 
 #define DDS_HEADER_FLAGS_TEXTURE        0x00001007  // DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT
 #define DDS_HEADER_FLAGS_MIPMAP         0x00020000  // DDSD_MIPMAPCOUNT
@@ -206,7 +207,7 @@ namespace
     { sizeof(DDS_PIXELFORMAT), DDS_BUMPDUDV, 0, 32, 0x0000ffff, 0xffff0000, 0, 0 };
 
     const DDS_PIXELFORMAT DDSPF_A2W10V10U10 =
-    { sizeof(DDS_PIXELFORMAT), DDS_BUMPDUDV, 0, 32, 0x3ff00000, 0x000ffc00, 0x000003ff, 0xc0000000 };
+    { sizeof(DDS_PIXELFORMAT), DDS_BUMPDUDVA, 0, 32, 0x3ff00000, 0x000ffc00, 0x000003ff, 0xc0000000 };
 
     const DDS_PIXELFORMAT DDSPF_L6V5U5 =
     { sizeof(DDS_PIXELFORMAT), DDS_BUMPLUMINANCE, 0, 16, 0x001f, 0x03e0, 0xfc00, 0 };