diff options
Diffstat (limited to 'src/savage_bci.h')
| -rw-r--r-- | src/savage_bci.h | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/src/savage_bci.h b/src/savage_bci.h index 0c57957..4874be7 100644 --- a/src/savage_bci.h +++ b/src/savage_bci.h @@ -3,6 +3,42 @@ #ifndef _S3BCI_H_ #define _S3BCI_H_ + +/* BCI Control Register */ +#define S3_BCI_CONTROL 0x816C + +/* + * High 8 bit of primary bitmap descriptor 2 register. + * Bits 25-24: Tile Format 00 = Linear ; 10 = 16 bits; 11 = 32 bits (Savage4) + * 00 = Linear ; 01 = Tile; 10 = Texture tiling format/ Destination Tiling format + * 11 = Reserved/Destination tiling format. + */ + + +#define TILE_LINEAR 0 +#define TILE_FORMAT_LINEAR 0 +#define TILE_TEXTURE 2 +#define TILE_DESTINATION 1 +#define TILE_FORMAT_DESTINATION16 2 +#define TILE_FORMAT_DESTINATION32 3 + +/* BD - BCI enable */ +/* savage4, MX, IX, 3D */ +#define BCI_ENABLE 8 +/* twister, prosavage */ +/* not sure which one supersavage fits into */ +#define BCI_ENABLE_TWISTER 0 + +#define S3_BIG_ENDIAN 4 +#define S3_LITTLE_ENDIAN 0 +#define S3_BD64 1 + + + +/* Global Bitmap Descriptor */ +#define S3_BCI_GLB_BD_LOW 0x8168 +#define S3_BCI_GLB_BD_HIGH 0x816C + #define REVERSE_BYTE_ORDER32(dword) {\ unsigned int temp; \ dword = (temp & 0xFF) << 24; \ @@ -71,7 +107,7 @@ #define BCI_BD_TILE_MASK 0x03000000 #define BCI_BD_TILE_NONE 0x00000000 #define BCI_BD_TILE_16 0x02000000 -#define BCI_BD_TILE_32 0x04000000 +#define BCI_BD_TILE_32 0x03000000 #define BCI_BD_GET_BPP(bd) (((bd) >> 16) & 0xFF) #define BCI_BD_SET_BPP(bd, bpp) ((bd) |= (((bpp) & 0xFF) << 16)) #define BCI_BD_GET_STRIDE(bd) ((bd) & 0xFFFF) |