Update DDS header

Author: walbourn

DirectXTex/DDS.h

@@ -39,17 +39,18 @@ namespace DirectX
         uint32_t    ABitMask;
     };
 
-#define DDS_FOURCC      0x00000004  // DDPF_FOURCC
-#define DDS_RGB         0x00000040  // DDPF_RGB
-#define DDS_RGBA        0x00000041  // DDPF_RGB | DDPF_ALPHAPIXELS
-#define DDS_LUMINANCE   0x00020000  // DDPF_LUMINANCE
-#define DDS_LUMINANCEA  0x00020001  // DDPF_LUMINANCE | DDPF_ALPHAPIXELS
-#define DDS_ALPHAPIXELS 0x00000001  // DDPF_ALPHAPIXELS
-#define DDS_ALPHA       0x00000002  // DDPF_ALPHA
-#define DDS_PAL8        0x00000020  // DDPF_PALETTEINDEXED8
-#define DDS_PAL8A       0x00000021  // DDPF_PALETTEINDEXED8 | DDPF_ALPHAPIXELS
-#define DDS_BUMPDUDV    0x00080000  // DDPF_BUMPDUDV
-// DDS_BUMPLUMINANCE 0x00040000
+#define DDS_FOURCC        0x00000004  // DDPF_FOURCC
+#define DDS_RGB           0x00000040  // DDPF_RGB
+#define DDS_RGBA          0x00000041  // DDPF_RGB | DDPF_ALPHAPIXELS
+#define DDS_LUMINANCE     0x00020000  // DDPF_LUMINANCE
+#define DDS_LUMINANCEA    0x00020001  // DDPF_LUMINANCE | DDPF_ALPHAPIXELS
+#define DDS_ALPHAPIXELS   0x00000001  // DDPF_ALPHAPIXELS
+#define DDS_ALPHA         0x00000002  // DDPF_ALPHA
+#define DDS_PAL8          0x00000020  // DDPF_PALETTEINDEXED8
+#define DDS_PAL8A         0x00000021  // DDPF_PALETTEINDEXED8 | DDPF_ALPHAPIXELS
+#define DDS_BUMPLUMINANCE 0x00040000  // DDPF_BUMPLUMINANCE
+#define DDS_BUMPDUDV      0x00080000  // DDPF_BUMPDUDV
+#define DDS_BUMPDUDVA     0x00080001  // DDPF_BUMPDUDV | DDPF_ALPHAPIXELS
 
 #ifndef MAKEFOURCC
 #define MAKEFOURCC(ch0, ch1, ch2, ch3) \
@@ -187,10 +188,13 @@ namespace DirectX
     DDSGLOBALCONST DDS_PIXELFORMAT DDSPF_A2B10G10R10 =
     { sizeof(DDS_PIXELFORMAT), DDS_RGBA, 0, 32, 0x3ff00000, 0x000ffc00, 0x000003ff, 0xc0000000 };
 
-// We do not support the following legacy Direct3D 9 formats:
-// DDSPF_A2W10V10U10 = { sizeof(DDS_PIXELFORMAT), DDS_BUMPDUDV, 0, 32, 0x3ff00000, 0x000ffc00, 0x000003ff, 0xc0000000 };
-// DDSPF_L6V5U5 = { sizeof(DDS_PIXELFORMAT), DDS_BUMPLUMINANCE, 0, 16, 0x001f, 0x03e0, 0xfc00, 0 };
-// DDSPF_X8L8V8U8 = { sizeof(DDS_PIXELFORMAT), DDS_BUMPLUMINANCE, 0, 32, 0x000000ff, 0x0000ff00, 0x00ff0000, 0 };
+// The following legacy Direct3D 9 formats use 'mixed' signed & unsigned channels so requires special handling
+    DDSGLOBALCONST DDS_PIXELFORMAT DDSPF_A2W10V10U10 =
+    { sizeof(DDS_PIXELFORMAT), DDS_BUMPDUDVA, 0, 32, 0x3ff00000, 0x000ffc00, 0x000003ff, 0xc0000000 };
+    DDSGLOBALCONST DDS_PIXELFORMAT DDSPF_L6V5U5 =
+    { sizeof(DDS_PIXELFORMAT), DDS_BUMPLUMINANCE, 0, 16, 0x001f, 0x03e0, 0xfc00, 0 };
+    DDSGLOBALCONST DDS_PIXELFORMAT DDSPF_X8L8V8U8 =
+    { sizeof(DDS_PIXELFORMAT), DDS_BUMPLUMINANCE, 0, 32, 0x000000ff, 0x0000ff00, 0x00ff0000, 0 };
 
 // This indicates the DDS_HEADER_DXT10 extension is present (the format is in dxgiFormat)
     DDSGLOBALCONST DDS_PIXELFORMAT DDSPF_DX10 =