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- /* Copyright (C) 1989, 1992 Aladdin Enterprises. All rights reserved.
-
- This file is part of Aladdin Ghostscript.
-
- Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author
- or distributor accepts any responsibility for the consequences of using it,
- or for whether it serves any particular purpose or works at all, unless he
- or she says so in writing. Refer to the Aladdin Ghostscript Free Public
- License (the "License") for full details.
-
- Every copy of Aladdin Ghostscript must include a copy of the License,
- normally in a plain ASCII text file named PUBLIC. The License grants you
- the right to copy, modify and redistribute Aladdin Ghostscript, but only
- under certain conditions described in the License. Among other things, the
- License requires that the copyright notice and this notice be preserved on
- all copies.
- */
-
- /* gdevsvga.h */
- /* SuperVGA display definitions */
- /* Requires gdevpcfb.h */
-
- /* Common procedures */
-
- /* See gxdevice.h for the definitions of the procedures. */
-
- dev_proc_close_device(svga_close);
- dev_proc_map_rgb_color(svga_map_rgb_color);
- dev_proc_map_color_rgb(svga_map_color_rgb);
- dev_proc_fill_rectangle(svga_fill_rectangle);
- dev_proc_copy_mono(svga_copy_mono);
- dev_proc_copy_color(svga_copy_color);
- dev_proc_get_bits(svga_get_bits);
-
- /* Table structure for looking up graphics modes. */
- typedef struct {
- int width, height; /* "key" */
- int mode; /* "value" */
- } mode_info;
-
- /* The device descriptor structure */
- typedef struct gx_device_svga_s gx_device_svga;
- struct gx_device_svga_s {
- gx_device_common;
- int (*get_mode)(P0());
- void (*set_mode)(P1(int));
- void (*set_page)(P3(gx_device_svga *fbdev, int pnum, int wnum));
- const mode_info _ds *mode; /* BIOS display mode info */
- uint raster; /* frame buffer bytes per line */
- int current_page; /* current page */
- int wnum_read, wnum_write; /* window #s for read vs. write */
- /* Following are device-specific. */
- union {
- struct {
- void (*bios_set_page)(P2(int, int)); /* set-page function */
- int pn_shift; /* log2(64K/granularity) */
- } vesa;
- struct {
- int select_reg; /* page-select register */
- } atiw;
- struct {
- int et_model; /* 4 for ET4000, */
- /* 3 for ET3000 */
- } tseng;
- } info;
- };
-
- /* The initial parameters map an appropriate fraction of */
- /* the screen to a full-page coordinate space. */
- /* This may or may not be what is desired! */
- #define svga_color_device(procs, name, depth, maxv, dither, get_mode, set_mode, set_page) {\
- sizeof(gx_device_svga),\
- &procs,\
- name,\
- 640, 480, /* screen size */\
- 480 / PAGE_HEIGHT_INCHES, 480 / PAGE_HEIGHT_INCHES, /* resolution */\
- no_margins,\
- dci_color(depth, maxv, dither),\
- dev_init_misc,\
- { 0 }, /* std_procs */\
- get_mode, set_mode, set_page\
- }
- #define svga_device(procs, name, get_mode, set_mode, set_page)\
- svga_color_device(procs, name, 8, 31, 4, get_mode, set_mode, set_page)
-
- /* Utility procedures */
- void svga_init_colors(P0());
- int svga_find_mode(P2(gx_device *, const mode_info _ds *));
- int svga_open(P1(gx_device *));
-