From 642699a19f1c07336a6fadacd6d5a9028f5d346f Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Mon, 16 Jun 2003 14:32:44 +0000 Subject: DOS updates for new tree (Daniel Borca) --- src/mesa/drivers/dos/vga.c | 470 ++++++++++++++++++++++----------------------- 1 file changed, 235 insertions(+), 235 deletions(-) (limited to 'src/mesa/drivers/dos/vga.c') diff --git a/src/mesa/drivers/dos/vga.c b/src/mesa/drivers/dos/vga.c index 4fe8773243..9de32f0cd5 100644 --- a/src/mesa/drivers/dos/vga.c +++ b/src/mesa/drivers/dos/vga.c @@ -1,235 +1,235 @@ -/* - * 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 v1.3 for Mesa - * - * Copyright (C) 2002 - Borca Daniel - * Email : dborca@yahoo.com - * Web : http://www.geocities.com/dborca - */ - - -#include -#include - -#include "video.h" -#include "vga.h" - - - -static vl_mode modes[] = { - {0x13 | 0x4000, 320, 200, 320, 8, -1, 320*200}, - {0xffff, -1, -1, -1, -1, -1, -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 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) -{ - if (!(p->mode & 0x4000)) { - return -1; - } - VGA.blit = _can_mmx() ? vesa_l_dump_virtual_mmx : vesa_l_dump_virtual; - - 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)); - } -} - - - -/* 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 -}; +/* + * 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 v1.3 for Mesa + * + * Copyright (C) 2002 - Borca Daniel + * Email : dborca@yahoo.com + * Web : http://www.geocities.com/dborca + */ + + +#include +#include + +#include "video.h" +#include "vga.h" + + + +static vl_mode modes[] = { + {0x13 | 0x4000, 320, 200, 320, 8, -1, 320*200}, + {0xffff, -1, -1, -1, -1, -1, -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 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) +{ + if (!(p->mode & 0x4000)) { + return -1; + } + VGA.blit = _can_mmx() ? vesa_l_dump_virtual_mmx : vesa_l_dump_virtual; + + 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)); + } +} + + + +/* 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 +}; -- cgit v1.2.3