diff options
Diffstat (limited to 'sys/gio/sgikern/sgk.com')
| -rw-r--r-- | sys/gio/sgikern/sgk.com | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sys/gio/sgikern/sgk.com b/sys/gio/sgikern/sgk.com new file mode 100644 index 00000000..a919e147 --- /dev/null +++ b/sys/gio/sgikern/sgk.com @@ -0,0 +1,49 @@ +# SGK.COM -- The common for the SGK kernel. A common is used here for maximum +# efficiency (minimum indirection) when rasterizing vectors and encoding +# metacode. The maximum bitmap size is set at compile time in sgk.h. + +# Booleans put here to avoid possible alignment problems. + +bool mf_bitmap # metafile type, metacode or bitmap +bool mf_rotate # rotate (swap x and y) +bool mf_yflip # flip y axis end for end +bool mf_update # update bitmap +bool mf_delete # delete metacode file after dispose +bool mf_debug # print kernel debugging messages +bool mf_swap2 # swap every 2 bytes on output +bool mf_swap4 # swap every 4 bytes on output +bool mf_oneperfile # store each frame in a new file + +common /sgkboo/ mf_bitmap, mf_rotate, mf_yflip, mf_update, mf_delete, mf_debug, + mf_swap2, mf_swap4, mf_oneperfile + +# Everything else goes here. + +int mf_fd # file descriptor of output file +int mf_frame # frame counter +char mf_fname[SZ_PATHNAME] # metafile filename +char mf_dispose[SZ_OSCMD] # host dispose command + +int mf_op # [MCODE] index into obuf +short mf_obuf[LEN_OBUF] # metacode buffer + +int mf_cx, mf_cy # [BITMAPS] current pen position +int mf_nbpb # packing factor, bits per byte +int mf_pxsize, mf_pysize # physical x, y size of bitmap, bits +int mf_wxsize, mf_wysize # x, y size of bitmap window, bits +int mf_xorigin, mf_yorigin # origin of bitmap window +real mf_xscale, mf_yscale # to convert from NDC to device coords +int mf_xmin, mf_xmax # x clipping limits +int mf_ymin, mf_ymax # y clipping limits +int mf_lenframe # frame size, words +int mf_linewidth # relative line width +int mf_lworigin # device width of line size 1.0 +real mf_lwslope # device pixels per line size increment +int mf_fbuf[LEN_FBUF] # frame buffer (BIG) +int mf_bitmask[BPW] # bit mask table + +common /sgkcom/ mf_fd, mf_frame, mf_op, mf_cx, mf_cy, mf_nbpb, mf_pxsize, + mf_pysize, mf_wxsize, mf_wysize, mf_xorigin, mf_yorigin, mf_xscale, + mf_yscale, mf_xmin, mf_xmax, mf_ymin, mf_ymax, mf_lenframe, + mf_linewidth, mf_lworigin, mf_lwslope, mf_fbuf, mf_bitmask, mf_obuf, + mf_fname, mf_dispose |