diff options
Diffstat (limited to 'src/mesa/drivers/dri/r300/r300_reg.h')
-rw-r--r-- | src/mesa/drivers/dri/r300/r300_reg.h | 75 |
1 files changed, 69 insertions, 6 deletions
diff --git a/src/mesa/drivers/dri/r300/r300_reg.h b/src/mesa/drivers/dri/r300/r300_reg.h index 90c5158b8b..47c5305c4e 100644 --- a/src/mesa/drivers/dri/r300/r300_reg.h +++ b/src/mesa/drivers/dri/r300/r300_reg.h @@ -142,12 +142,16 @@ I am fairly certain that they are correct unless stated otherwise in comments. // Native reported limits and the VPI layout suggest size 256, whereas // difference between known addresses suggests size 512. // +// At address UPLOAD_POINTSIZE is a vector (0, 0, ps, 0), where ps is the +// floating point pointsize. The exact purpose of this state is uncertain, +// as there is also the R300_RE_POINTSIZE register. +// // Multiple vertex programs and parameter sets can be loaded at once, // which could explain the size discrepancy. #define R300_VAP_PVS_UPLOAD_ADDRESS 0x2200 # define R300_PVS_UPLOAD_PROGRAM 0x00000000 # define R300_PVS_UPLOAD_PARAMETERS 0x00000200 -# define R300_PVS_UPLOAD_UNKNOWN 0x00000400 +# define R300_PVS_UPLOAD_POINTSIZE 0x00000406 /* gap */ #define R300_VAP_PVS_UPLOAD_DATA 0x2208 // END @@ -251,11 +255,14 @@ I am fairly certain that they are correct unless stated otherwise in comments. # define R300_TX_ENABLE_14 (1 << 14) # define R300_TX_ENABLE_15 (1 << 15) -// No idea what the purpose is, but it is set to 421C_CLEAR just before -// issuing the clear command and then reset to 421C_NORMAL afterwards. -#define R300_UNKNOWN_421C 0x421C -# define R300_421C_NORMAL 0x00060006 -# define R300_421C_CLEAR 0x0F000B40 +// The pointsize is given in multiples of 6. The pointsize can be +// enormous: Clear() renders a single point that fills the entire +// framebuffer. +#define R300_RE_POINTSIZE 0x421C +# define R300_POINTSIZE_Y_SHIFT 0 +# define R300_POINTSIZE_Y_MASK (0xFFFF << 0) // GUESS +# define R300_POINTSIZE_X_SHIFT 16 +# define R300_POINTSIZE_X_MASK (0xFFFF << 16) // GUESS // BEGIN: Rasterization / Interpolators - many guesses // So far, 0_UNKOWN_7 has always been set. @@ -327,6 +334,62 @@ I am fairly certain that they are correct unless stated otherwise in comments. # define R300_RS_ROUTE_0_COLOR_DEST_MASK (31 << 6) // GUESS // END +// BEGIN: Scissors and cliprects +// There are four clipping rectangles. Their corner coordinates are inclusive. +// Every pixel is assigned a number from 0 and 15 by setting bits 0-3 depending +// on whether the pixel is inside cliprects 0-3, respectively. For example, +// if a pixel is inside cliprects 0 and 1, but outside 2 and 3, it is assigned +// the number 3 (binary 0011). +// Iff the bit corresponding to the pixel's number in RE_CLIPRECT_CNTL is set, +// the pixel is rasterized. +// +// In addition to this, there is a scissors rectangle. Only pixels inside the +// scissors rectangle are drawn. (coordinates are inclusive) +// +// For some reason, the top-left corner of the framebuffer is at (1440, 1440) +// for the purpose of clipping and scissors. +#define R300_RE_CLIPRECT_TL_0 0x43B0 +#define R300_RE_CLIPRECT_BR_0 0x43B4 +#define R300_RE_CLIPRECT_TL_1 0x43B8 +#define R300_RE_CLIPRECT_BR_1 0x43BC +#define R300_RE_CLIPRECT_TL_2 0x43C0 +#define R300_RE_CLIPRECT_BR_2 0x43C4 +#define R300_RE_CLIPRECT_TL_3 0x43C8 +#define R300_RE_CLIPRECT_BR_3 0x43CC +# define R300_CLIPRECT_OFFSET 1440 +# define R300_CLIPRECT_MASK 0x1FFF +# define R300_CLIPRECT_X_SHIFT 0 +# define R300_CLIPRECT_X_MASK (0x1FFF << 0) +# define R300_CLIPRECT_Y_SHIFT 13 +# define R300_CLIPRECT_Y_MASK (0x1FFF << 13) +#define R300_RE_CLIPRECT_CNTL 0x43D0 +# define R300_CLIP_OUT (1 << 0) +# define R300_CLIP_0 (1 << 1) +# define R300_CLIP_1 (1 << 2) +# define R300_CLIP_10 (1 << 3) +# define R300_CLIP_2 (1 << 4) +# define R300_CLIP_20 (1 << 5) +# define R300_CLIP_21 (1 << 6) +# define R300_CLIP_210 (1 << 7) +# define R300_CLIP_3 (1 << 8) +# define R300_CLIP_30 (1 << 9) +# define R300_CLIP_31 (1 << 10) +# define R300_CLIP_310 (1 << 11) +# define R300_CLIP_32 (1 << 12) +# define R300_CLIP_320 (1 << 13) +# define R300_CLIP_321 (1 << 14) +# define R300_CLIP_3210 (1 << 15) + +/* gap */ +#define R300_RE_SCISSORS_TL 0x43E0 +#define R300_RE_SCISSORS_BR 0x43E4 +# define R300_SCISSORS_OFFSET 1440 +# define R300_SCISSORS_X_SHIFT 0 +# define R300_SCISSORS_X_MASK (0x1FFF << 0) +# define R300_SCISSORS_Y_SHIFT 13 +# define R300_SCISSORS_Y_MASK (0x1FFF << 13) +// END + // BEGIN: Texture specification // The texture specification dwords are grouped by meaning and not by texture unit. // This means that e.g. the offset for texture image unit N is found in register |