diff options
Diffstat (limited to 'src/mesa/drivers/dos/video.c')
| -rw-r--r-- | src/mesa/drivers/dos/video.c | 442 |
1 files changed, 0 insertions, 442 deletions
diff --git a/src/mesa/drivers/dos/video.c b/src/mesa/drivers/dos/video.c deleted file mode 100644 index 468207fbf6..0000000000 --- a/src/mesa/drivers/dos/video.c +++ /dev/null @@ -1,442 +0,0 @@ -/* - * Mesa 3-D graphics library - * Version: 4.0 - * - * 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 - * - * Thanks to CrazyPyro (Neil Funk) for FakeColor - */ - - -#include <stdlib.h> - -#include "internal.h" -#include "vesa.h" -#include "vga.h" -#include "null.h" -#include "video.h" - - -static vl_driver *drv; -/* based upon mode specific data: valid entire session */ -int vl_video_selector; -static vl_mode *video_mode; -static int video_scanlen, video_bypp; -/* valid until next buffer */ -void *vl_current_draw_buffer, *vl_current_read_buffer; -int vl_current_stride, vl_current_width, vl_current_height, vl_current_bytes; -int vl_current_offset, vl_current_delta; - - -void (*vl_flip) (void); - - -/* FakeColor data */ -#define R_CNT 6 -#define G_CNT 6 -#define B_CNT 6 - -#define R_BIAS 7 -#define G_BIAS 7 -#define B_BIAS 7 - -static word32 VGAPalette[256]; -word8 array_r[256]; -word8 array_g[256]; -word8 array_b[256]; -word8 tab_16_8[0x10000]; - - -/* lookup table for scaling 5 bit colors up to 8 bits */ -static int _rgb_scale_5[32] = { - 0, 8, 16, 25, 33, 41, 49, 58, - 66, 74, 82, 90, 99, 107, 115, 123, - 132, 140, 148, 156, 165, 173, 181, 189, - 197, 206, 214, 222, 230, 239, 247, 255 -}; - -/* lookup table for scaling 6 bit colors up to 8 bits */ -static int _rgb_scale_6[64] = { - 0, 4, 8, 12, 16, 20, 24, 28, - 32, 36, 40, 45, 49, 53, 57, 61, - 65, 69, 73, 77, 81, 85, 89, 93, - 97, 101, 105, 109, 113, 117, 121, 125, - 130, 134, 138, 142, 146, 150, 154, 158, - 162, 166, 170, 174, 178, 182, 186, 190, - 194, 198, 202, 206, 210, 215, 219, 223, - 227, 231, 235, 239, 243, 247, 251, 255 -}; - - -/* Desc: color composition (w/o ALPHA) - * - * In : array of integers (R, G, B) - * Out : color - * - * Note: - - */ -static int -v_mixrgb8fake (const unsigned char rgb[]) -{ - return array_b[rgb[2]]*G_CNT*R_CNT - + array_g[rgb[1]]*R_CNT - + array_r[rgb[0]]; -} - - -/* Desc: color decomposition - * - * In : pixel offset, array of integers to hold color components (R, G, B, A) - * Out : - - * - * Note: uses current read buffer - */ -static void -v_getrgb8fake6 (unsigned int offset, unsigned char rgb[]) -{ - word32 c = VGAPalette[((word8 *)vl_current_read_buffer)[offset]]; - rgb[0] = _rgb_scale_6[(c >> 16) & 0x3F]; - rgb[1] = _rgb_scale_6[(c >> 8) & 0x3F]; - rgb[2] = _rgb_scale_6[ c & 0x3F]; -} -static void -v_getrgb8fake8 (unsigned int offset, unsigned char rgb[]) -{ - word32 c = VGAPalette[((word8 *)vl_current_read_buffer)[offset]]; - rgb[0] = c >> 16; - rgb[1] = c >> 8; - rgb[2] = c; -} - - -/* Desc: create R5G6B5 to FakeColor table lookup - * - * In : - - * Out : - - * - * Note: - - */ -static void -init_tab_16_8 (void) -{ - int i; - for (i = 0; i < 0x10000; i++) { - unsigned char rgb[3]; - rgb[0] = _rgb_scale_5[(i >> 11) & 0x1F]; - rgb[1] = _rgb_scale_6[(i >> 5) & 0x3F]; - rgb[2] = _rgb_scale_5[ i & 0x1F]; - tab_16_8[i] = v_mixrgb8fake(rgb); - } - (void)v_getrgb8fake6; - (void)v_getrgb8fake8; -} - - -/* Desc: set one palette entry - * - * In : index, R, G, B - * Out : - - * - * Note: color components are in range [0.0 .. 1.0] - */ -void -vl_setCI (int index, float red, float green, float blue) -{ - drv->setCI_f(index, red, green, blue); -} - - -/* Desc: set one palette entry - * - * In : color, R, G, B - * Out : - - * - * Note: - - */ -static void -fake_setcolor (int c, int r, int g, int b) -{ - VGAPalette[c] = 0xff000000 | (r<<16) | (g<<8) | b; - - drv->setCI_i(c, r, g, b); -} - - -/* Desc: build FakeColor palette - * - * In : CI precision in bits - * Out : - - * - * Note: - - */ -static void -fake_buildpalette (int bits) -{ - double c_r, c_g, c_b; - int r, g, b, color = 0; - - double max = (1 << bits) - 1; - - for (b = 0; b < B_CNT; ++b) { - for (g = 0; g < G_CNT; ++g) { - for (r = 0; r < R_CNT; ++r) { - c_r = 0.5 + (double)r * (max-R_BIAS) / (R_CNT-1.) + R_BIAS; - c_g = 0.5 + (double)g * (max-G_BIAS) / (G_CNT-1.) + G_BIAS; - c_b = 0.5 + (double)b * (max-B_BIAS) / (B_CNT-1.) + B_BIAS; - fake_setcolor(color++, (int)c_r, (int)c_g, (int)c_b); - } - } - } - - for (color = 0; color < 256; color++) { - c_r = (double)color * R_CNT / 256.; - c_g = (double)color * G_CNT / 256.; - c_b = (double)color * B_CNT / 256.; - array_r[color] = (int)c_r; - array_g[color] = (int)c_g; - array_b[color] = (int)c_b; - } -} - - -/* Desc: initialize hardware - * - * In : - - * Out : list of available modes - * - * Note: when returning non-NULL, global variable `drv' is guaranteed to be ok - */ -static vl_mode * -v_init_hw (void) -{ - static vl_mode *q = NULL; - - if (q == NULL) { - /* are we forced to NUL driver? */ - if (getenv("DMESA_NULDRV")) { - if ((q = NUL.init()) != NULL) { - drv = &NUL; - } - return q; - } - /* initialize hardware */ - if ((q = VESA.init()) != NULL) { - drv = &VESA; - } else if ((q = VGA.init()) != NULL) { - drv = &VGA; - } else { - drv = NULL; - } - } - - return q; -} - - -/* Desc: sync buffer with video hardware - * - * In : ptr to old buffer, position, size - * Out : 0 if success - * - * Note: - - */ -int -vl_sync_buffer (void **buffer, int x, int y, int width, int height) -{ - if ((/*XXX*/width & 7) || (x < 0) || (y < 0) || (x+width > video_mode->xres) || (y+height > video_mode->yres)) { - return -1; - } else { - void *newbuf = *buffer; - - if ((newbuf == NULL) || (vl_current_width != width) || (vl_current_height != height)) { - newbuf = realloc(newbuf, width * height * video_bypp); - } - - if (newbuf == NULL) { - return -2; - } - - vl_current_width = width; - vl_current_height = height; - vl_current_stride = vl_current_width * video_bypp; - vl_current_bytes = vl_current_stride * height; - - vl_current_offset = video_scanlen * y + video_bypp * x; - vl_current_delta = video_scanlen - vl_current_stride; - - vl_current_draw_buffer = vl_current_read_buffer = *buffer = newbuf; - return 0; - } -} - - -/* Desc: state retrieval - * - * In : name, storage - * Out : -1 for an error - * - * Note: - - */ -int -vl_get (int pname, int *params) -{ - switch (pname) { - case VL_GET_SCREEN_SIZE: - params[0] = video_mode->xres; - params[1] = video_mode->yres; - break; - case VL_GET_VIDEO_MODES: { - int n; - vl_mode *q; - if ((q = v_init_hw()) == NULL) { - return -1; - } - /* count available visuals */ - for (n = 0; q->mode != 0xffff; q++) { - if ((q + 1)->mode == (q->mode | 0x4000)) { - /* same mode, but linear */ - q++; - } - if (params) { - params[n] = (int)q; - } - n++; - } - return n; - } - default: - return (drv != NULL) ? drv->get(pname, params) : -1; - } - return 0; -} - - -/* Desc: setup mode - * - * In : ptr to mode definition - * Out : 0 if success - * - * Note: - - */ -static int -vl_setup_mode (vl_mode *p) -{ - if (p == NULL) { - return -1; - } - - switch (p->bpp) { - case 8: - break; - case 15: - break; - case 16: - break; - case 24: - break; - case 32: - break; - default: - return -1; - } - - video_mode = p; - video_bypp = (p->bpp+7)/8; - video_scanlen = p->scanlen; - vl_video_selector = p->sel; - - return 0; -} - - -/* Desc: restore to the mode prior to first call to `vl_video_init'. - * - * In : - - * Out : - - * - * Note: - - */ -void -vl_video_exit (void) -{ - drv->restore(); - drv->fini(); - video_mode = NULL; -} - - -/* Desc: enter mode - * - * In : xres, yres, bits/pixel, RGB, refresh rate - * Out : pixel width in bits if success - * - * Note: - - */ -int -vl_video_init (int width, int height, int bpp, int rgb, int refresh, int fbbits) -{ - int fake; - vl_mode *p, *q; - unsigned int min; - - fake = 0; - if (!rgb) { - bpp = 8; - } else if (bpp == 8) { - fake = 1; - } - - /* initialize hardware */ - if ((q = v_init_hw()) == NULL) { - return 0; - } - - /* search for a mode that fits our request */ - for (min = -1, p = NULL; q->mode != 0xffff; q++) { - if ((q->xres >= width) && (q->yres >= height) && (q->bpp == bpp)) { - if (min >= (unsigned)(q->xres * q->yres)) { - min = q->xres * q->yres; - p = q; - } - } - } - - /* setup and enter mode */ - if ((vl_setup_mode(p) == 0) && (drv->entermode(p, refresh, fbbits) == 0)) { - vl_flip = drv->blit; - if (fake) { - drv->get(VL_GET_CI_PREC, (int *)(&min)); - fake_buildpalette(min); - init_tab_16_8(); - } - return bpp; - } - - /* abort */ - return 0; -} |