#define NV50_VSTATUS_BLOCKED 0x00000005
#define NV50_VSTATUS_FAULTED 0x00000006
#define NV50_VSTATUS_PAUSED 0x00000007
+#define NV50_SURFACE_FORMAT_NONE 0x00000000
#define NV50_SURFACE_FORMAT_BITMAP 0x0000001c
#define NV50_SURFACE_FORMAT_UNK1D 0x0000001d
#define NV50_SURFACE_FORMAT_RGBA32_FLOAT 0x000000c0