diff options
Diffstat (limited to 'src/mesa/drivers/dos/vga.c')
| -rw-r--r-- | src/mesa/drivers/dos/vga.c | 289 |
1 files changed, 0 insertions, 289 deletions
diff --git a/src/mesa/drivers/dos/vga.c b/src/mesa/drivers/dos/vga.c deleted file mode 100644 index 5a6447dd87..0000000000 --- a/src/mesa/drivers/dos/vga.c +++ /dev/null @@ -1,289 +0,0 @@ -/* - * Mesa 3-D graphics library - * Version: 4.1 - * - * Copyright (C) 1999 Brian Paul All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - -/* - * DOS/DJGPP device driver for Mesa - * - * Author: Daniel Borca - * Email : dborca@users.sourceforge.net - * Web : http://www.geocities.com/dborca - */ - - -#include <pc.h> -#include <stdlib.h> - -#include "video.h" -#include "vga.h" - - -static vl_mode modes[] = { - { - /* .xres = */ 320, - /* .yres = */ 200, - /* .bpp = */ 8, - /* .mode = */ 0x13 | 0x4000, - /* .scanlen = */ 320, - /* .sel = */ -1, - /* .gran = */ 320*200 - }, - { - /* .xres = */ -1, - /* .yres = */ -1, - /* .bpp = */ -1, - /* .mode = */ 0xffff, - /* .scanlen = */ -1, - /* .sel = */ -1, - /* .gran = */ -1 - } -}; - -static word16 vga_ver; -static int linear_selector; -static int oldmode = -1; - -#define vga_color_precision 6 - - -/* Desc: Attempts to detect VGA, check video modes and create selectors. - * - * In : - - * Out : mode array - * - * Note: - - */ -static vl_mode * -vga_init (void) -{ - int rv = 0; - - if (vga_ver) { - return modes; - } - - __asm("\n\ - movw $0x1a00, %%ax \n\ - int $0x10 \n\ - cmpb $0x1a, %%al \n\ - jne 0f \n\ - cmpb $0x07, %%bl \n\ - jb 0f \n\ - andl $0xff, %%ebx \n\ - movl %%ebx, %0 \n\ - 0:":"=g"(rv)::"%eax", "%ebx"); - if (rv == 0) { - return NULL; - } - - if (_create_selector(&linear_selector, 0xa0000, 0x10000)) { - return NULL; - } - - modes[0].sel = linear_selector; - - vga_ver = rv; - return modes; -} - - -/* Desc: Frees all resources allocated by VGA init code. - * - * In : - - * Out : - - * - * Note: - - */ -static void -vga_fini (void) -{ - if (vga_ver) { - _remove_selector(&linear_selector); - } -} - - -/* Desc: Attempts to choose a suitable blitter. - * - * In : ptr to mode structure, software framebuffer bits - * Out : blitter funciton, or NULL - * - * Note: - - */ -static BLTFUNC -_choose_blitter (vl_mode *p, int fbbits) -{ - BLTFUNC blitter; - - switch (fbbits) { - case 8: - blitter = _can_mmx() ? vesa_l_dump_virtual_mmx : vesa_l_dump_virtual; - break; - case 16: - blitter = vesa_l_dump_16_to_8; - break; - case 24: - blitter = vesa_l_dump_24_to_8; - break; - case 32: - blitter = vesa_l_dump_32_to_8; - break; - default: - return NULL; - } - - return blitter; - - (void)p; -} - - -/* Desc: Attempts to enter specified video mode. - * - * In : ptr to mode structure, refresh rate - * Out : 0 if success - * - * Note: - - */ -static int -vga_entermode (vl_mode *p, int refresh, int fbbits) -{ - if (!(p->mode & 0x4000)) { - return -1; - } - - VGA.blit = _choose_blitter(p, fbbits); - if (VGA.blit == NULL) { - return !0; - } - - if (oldmode == -1) { - __asm("\n\ - movb $0x0f, %%ah \n\ - int $0x10 \n\ - andl $0xff, %%eax \n\ - movl %%eax, %0 \n\ - ":"=g"(oldmode)::"%eax", "%ebx"); - } - - __asm("int $0x10"::"a"(p->mode&0xff)); - - return 0; - - (void)refresh; /* silence compiler warning */ -} - - -/* Desc: Restores to the mode prior to first call to vga_entermode. - * - * In : - - * Out : - - * - * Note: - - */ -static void -vga_restore (void) -{ - if (oldmode != -1) { - __asm("int $0x10"::"a"(oldmode)); - oldmode = -1; - } -} - - -/* Desc: set one palette entry - * - * In : color index, R, G, B - * Out : - - * - * Note: uses integer values - */ -static void -vga_setCI_i (int index, int red, int green, int blue) -{ -#if 0 - __asm("\n\ - movw $0x1010, %%ax \n\ - movb %1, %%dh \n\ - movb %2, %%ch \n\ - int $0x10 \n\ - "::"b"(index), "m"(red), "m"(green), "c"(blue):"%eax", "%edx"); -#else - outportb(0x03C8, index); - outportb(0x03C9, red); - outportb(0x03C9, green); - outportb(0x03C9, blue); -#endif -} - - -/* Desc: set one palette entry - * - * In : color index, R, G, B - * Out : - - * - * Note: uses normalized values - */ -static void -vga_setCI_f (int index, float red, float green, float blue) -{ - float max = (1 << vga_color_precision) - 1; - - vga_setCI_i(index, (int)(red * max), (int)(green * max), (int)(blue * max)); -} - - -/* Desc: state retrieval - * - * In : parameter name, ptr to storage - * Out : 0 if request successfully processed - * - * Note: - - */ -static int -vga_get (int pname, int *params) -{ - switch (pname) { - case VL_GET_CI_PREC: - params[0] = vga_color_precision; - break; - default: - return -1; - } - return 0; -} - - -/* - * the driver - */ -vl_driver VGA = { - vga_init, - vga_entermode, - NULL, - vga_setCI_f, - vga_setCI_i, - vga_get, - vga_restore, - vga_fini -}; |