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-rw-r--r--lib/libvgl/simple.c686
1 files changed, 686 insertions, 0 deletions
diff --git a/lib/libvgl/simple.c b/lib/libvgl/simple.c
new file mode 100644
index 000000000000..3ae07db1993b
--- /dev/null
+++ b/lib/libvgl/simple.c
@@ -0,0 +1,686 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1991-1997 Søren Schmidt
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer
+ * in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+#include <signal.h>
+#include <sys/fbio.h>
+#include <sys/kbio.h>
+#include <sys/endian.h>
+#include "vgl.h"
+
+static int VGLBlank;
+static byte VGLBorderColor;
+static byte VGLSavePaletteRed[256];
+static byte VGLSavePaletteGreen[256];
+static byte VGLSavePaletteBlue[256];
+
+#define ABS(a) (((a)<0) ? -(a) : (a))
+#define SGN(a) (((a)<0) ? -1 : 1)
+#define min(x, y) (((x) < (y)) ? (x) : (y))
+#define max(x, y) (((x) > (y)) ? (x) : (y))
+
+void
+VGLSetXY(VGLBitmap *object, int x, int y, u_long color)
+{
+ int offset, soffset, undermouse;
+
+ VGLCheckSwitch();
+ if (x>=0 && x<object->VXsize && y>=0 && y<object->VYsize) {
+ if (object == VGLDisplay) {
+ undermouse = VGLMouseFreezeXY(x, y);
+ VGLSetXY(&VGLVDisplay, x, y, color);
+ } else if (object->Type != MEMBUF)
+ return; /* invalid */
+ else
+ undermouse = 0;
+ if (!undermouse) {
+ offset = (y * object->VXsize + x) * object->PixelBytes;
+ switch (object->Type) {
+ case VIDBUF8S:
+ case VIDBUF16S:
+ case VIDBUF32S:
+ offset = VGLSetSegment(offset);
+ /* FALLTHROUGH */
+ case MEMBUF:
+ case VIDBUF8:
+ case VIDBUF16:
+ case VIDBUF24:
+ case VIDBUF32:
+ color = htole32(color);
+ switch (object->PixelBytes) {
+ case 1:
+ memcpy(&object->Bitmap[offset], &color, 1);
+ break;
+ case 2:
+ memcpy(&object->Bitmap[offset], &color, 2);
+ break;
+ case 3:
+ memcpy(&object->Bitmap[offset], &color, 3);
+ break;
+ case 4:
+ memcpy(&object->Bitmap[offset], &color, 4);
+ break;
+ }
+ break;
+ case VIDBUF24S:
+ soffset = VGLSetSegment(offset);
+ color = htole32(color);
+ switch (VGLAdpInfo.va_window_size - soffset) {
+ case 1:
+ memcpy(&object->Bitmap[soffset], &color, 1);
+ soffset = VGLSetSegment(offset + 1);
+ memcpy(&object->Bitmap[soffset], (byte *)&color + 1, 2);
+ break;
+ case 2:
+ memcpy(&object->Bitmap[soffset], &color, 2);
+ soffset = VGLSetSegment(offset + 2);
+ memcpy(&object->Bitmap[soffset], (byte *)&color + 2, 1);
+ break;
+ default:
+ memcpy(&object->Bitmap[soffset], &color, 3);
+ break;
+ }
+ break;
+ case VIDBUF8X:
+ outb(0x3c4, 0x02);
+ outb(0x3c5, 0x01 << (x&0x3));
+ object->Bitmap[(unsigned)(VGLAdpInfo.va_line_width*y)+(x/4)] = ((byte)color);
+ break;
+ case VIDBUF4S:
+ offset = VGLSetSegment(y*VGLAdpInfo.va_line_width + x/8);
+ goto set_planar;
+ case VIDBUF4:
+ offset = y*VGLAdpInfo.va_line_width + x/8;
+set_planar:
+ outb(0x3c4, 0x02); outb(0x3c5, 0x0f);
+ outb(0x3ce, 0x00); outb(0x3cf, (byte)color & 0x0f); /* set/reset */
+ outb(0x3ce, 0x01); outb(0x3cf, 0x0f); /* set/reset enable */
+ outb(0x3ce, 0x08); outb(0x3cf, 0x80 >> (x%8)); /* bit mask */
+ object->Bitmap[offset] |= (byte)color;
+ }
+ }
+ if (object == VGLDisplay)
+ VGLMouseUnFreeze();
+ }
+}
+
+u_long
+VGLGetXY(VGLBitmap *object, int x, int y)
+{
+ u_long color;
+ int offset;
+
+ VGLCheckSwitch();
+ if (x<0 || x>=object->VXsize || y<0 || y>=object->VYsize)
+ return 0;
+ if (object == VGLDisplay)
+ object = &VGLVDisplay;
+ else if (object->Type != MEMBUF)
+ return 0; /* invalid */
+ offset = (y * object->VXsize + x) * object->PixelBytes;
+ switch (object->PixelBytes) {
+ case 1:
+ memcpy(&color, &object->Bitmap[offset], 1);
+ return le32toh(color) & 0xff;
+ case 2:
+ memcpy(&color, &object->Bitmap[offset], 2);
+ return le32toh(color) & 0xffff;
+ case 3:
+ memcpy(&color, &object->Bitmap[offset], 3);
+ return le32toh(color) & 0xffffff;
+ case 4:
+ memcpy(&color, &object->Bitmap[offset], 4);
+ return le32toh(color);
+ }
+ return 0; /* invalid */
+}
+
+ /*
+ * Symmetric Double Step Line Algorithm by Brian Wyvill from
+ * "Graphics Gems", Academic Press, 1990.
+ */
+
+#define SL_SWAP(a,b) {a^=b; b^=a; a^=b;}
+#define SL_ABSOLUTE(i,j,k) ( (i-j)*(k = ( (i-j)<0 ? -1 : 1)))
+
+void
+plot(VGLBitmap * object, int x, int y, int flag, u_long color)
+{
+ /* non-zero flag indicates the pixels need swapping back. */
+ if (flag)
+ VGLSetXY(object, y, x, color);
+ else
+ VGLSetXY(object, x, y, color);
+}
+
+
+void
+VGLLine(VGLBitmap *object, int x1, int y1, int x2, int y2, u_long color)
+{
+ int dx, dy, incr1, incr2, D, x, y, xend, c, pixels_left;
+ int sign_x, sign_y, step, reverse, i;
+
+ dx = SL_ABSOLUTE(x2, x1, sign_x);
+ dy = SL_ABSOLUTE(y2, y1, sign_y);
+ /* decide increment sign by the slope sign */
+ if (sign_x == sign_y)
+ step = 1;
+ else
+ step = -1;
+
+ if (dy > dx) { /* chooses axis of greatest movement (make dx) */
+ SL_SWAP(x1, y1);
+ SL_SWAP(x2, y2);
+ SL_SWAP(dx, dy);
+ reverse = 1;
+ } else
+ reverse = 0;
+ /* note error check for dx==0 should be included here */
+ if (x1 > x2) { /* start from the smaller coordinate */
+ x = x2;
+ y = y2;
+/* x1 = x1;
+ y1 = y1; */
+ } else {
+ x = x1;
+ y = y1;
+ x1 = x2;
+ y1 = y2;
+ }
+
+
+ /* Note dx=n implies 0 - n or (dx+1) pixels to be set */
+ /* Go round loop dx/4 times then plot last 0,1,2 or 3 pixels */
+ /* In fact (dx-1)/4 as 2 pixels are already plotted */
+ xend = (dx - 1) / 4;
+ pixels_left = (dx - 1) % 4; /* number of pixels left over at the
+ * end */
+ plot(object, x, y, reverse, color);
+ if (pixels_left < 0)
+ return; /* plot only one pixel for zero length
+ * vectors */
+ plot(object, x1, y1, reverse, color); /* plot first two points */
+ incr2 = 4 * dy - 2 * dx;
+ if (incr2 < 0) { /* slope less than 1/2 */
+ c = 2 * dy;
+ incr1 = 2 * c;
+ D = incr1 - dx;
+
+ for (i = 0; i < xend; i++) { /* plotting loop */
+ ++x;
+ --x1;
+ if (D < 0) {
+ /* pattern 1 forwards */
+ plot(object, x, y, reverse, color);
+ plot(object, ++x, y, reverse, color);
+ /* pattern 1 backwards */
+ plot(object, x1, y1, reverse, color);
+ plot(object, --x1, y1, reverse, color);
+ D += incr1;
+ } else {
+ if (D < c) {
+ /* pattern 2 forwards */
+ plot(object, x, y, reverse, color);
+ plot(object, ++x, y += step, reverse,
+ color);
+ /* pattern 2 backwards */
+ plot(object, x1, y1, reverse, color);
+ plot(object, --x1, y1 -= step, reverse,
+ color);
+ } else {
+ /* pattern 3 forwards */
+ plot(object, x, y += step, reverse, color);
+ plot(object, ++x, y, reverse, color);
+ /* pattern 3 backwards */
+ plot(object, x1, y1 -= step, reverse,
+ color);
+ plot(object, --x1, y1, reverse, color);
+ }
+ D += incr2;
+ }
+ } /* end for */
+
+ /* plot last pattern */
+ if (pixels_left) {
+ if (D < 0) {
+ plot(object, ++x, y, reverse, color); /* pattern 1 */
+ if (pixels_left > 1)
+ plot(object, ++x, y, reverse, color);
+ if (pixels_left > 2)
+ plot(object, --x1, y1, reverse, color);
+ } else {
+ if (D < c) {
+ plot(object, ++x, y, reverse, color); /* pattern 2 */
+ if (pixels_left > 1)
+ plot(object, ++x, y += step, reverse, color);
+ if (pixels_left > 2)
+ plot(object, --x1, y1, reverse, color);
+ } else {
+ /* pattern 3 */
+ plot(object, ++x, y += step, reverse, color);
+ if (pixels_left > 1)
+ plot(object, ++x, y, reverse, color);
+ if (pixels_left > 2)
+ plot(object, --x1, y1 -= step, reverse, color);
+ }
+ }
+ } /* end if pixels_left */
+ }
+ /* end slope < 1/2 */
+ else { /* slope greater than 1/2 */
+ c = 2 * (dy - dx);
+ incr1 = 2 * c;
+ D = incr1 + dx;
+ for (i = 0; i < xend; i++) {
+ ++x;
+ --x1;
+ if (D > 0) {
+ /* pattern 4 forwards */
+ plot(object, x, y += step, reverse, color);
+ plot(object, ++x, y += step, reverse, color);
+ /* pattern 4 backwards */
+ plot(object, x1, y1 -= step, reverse, color);
+ plot(object, --x1, y1 -= step, reverse, color);
+ D += incr1;
+ } else {
+ if (D < c) {
+ /* pattern 2 forwards */
+ plot(object, x, y, reverse, color);
+ plot(object, ++x, y += step, reverse,
+ color);
+
+ /* pattern 2 backwards */
+ plot(object, x1, y1, reverse, color);
+ plot(object, --x1, y1 -= step, reverse,
+ color);
+ } else {
+ /* pattern 3 forwards */
+ plot(object, x, y += step, reverse, color);
+ plot(object, ++x, y, reverse, color);
+ /* pattern 3 backwards */
+ plot(object, x1, y1 -= step, reverse, color);
+ plot(object, --x1, y1, reverse, color);
+ }
+ D += incr2;
+ }
+ } /* end for */
+ /* plot last pattern */
+ if (pixels_left) {
+ if (D > 0) {
+ plot(object, ++x, y += step, reverse, color); /* pattern 4 */
+ if (pixels_left > 1)
+ plot(object, ++x, y += step, reverse,
+ color);
+ if (pixels_left > 2)
+ plot(object, --x1, y1 -= step, reverse,
+ color);
+ } else {
+ if (D < c) {
+ plot(object, ++x, y, reverse, color); /* pattern 2 */
+ if (pixels_left > 1)
+ plot(object, ++x, y += step, reverse, color);
+ if (pixels_left > 2)
+ plot(object, --x1, y1, reverse, color);
+ } else {
+ /* pattern 3 */
+ plot(object, ++x, y += step, reverse, color);
+ if (pixels_left > 1)
+ plot(object, ++x, y, reverse, color);
+ if (pixels_left > 2) {
+ if (D > c) /* step 3 */
+ plot(object, --x1, y1 -= step, reverse, color);
+ else /* step 2 */
+ plot(object, --x1, y1, reverse, color);
+ }
+ }
+ }
+ }
+ }
+}
+
+void
+VGLBox(VGLBitmap *object, int x1, int y1, int x2, int y2, u_long color)
+{
+ VGLLine(object, x1, y1, x2, y1, color);
+ VGLLine(object, x2, y1, x2, y2, color);
+ VGLLine(object, x2, y2, x1, y2, color);
+ VGLLine(object, x1, y2, x1, y1, color);
+}
+
+void
+VGLFilledBox(VGLBitmap *object, int x1, int y1, int x2, int y2, u_long color)
+{
+ int y;
+
+ for (y=y1; y<=y2; y++) VGLLine(object, x1, y, x2, y, color);
+}
+
+static inline void
+set4pixels(VGLBitmap *object, int x, int y, int xc, int yc, u_long color)
+{
+ if (x!=0) {
+ VGLSetXY(object, xc+x, yc+y, color);
+ VGLSetXY(object, xc-x, yc+y, color);
+ if (y!=0) {
+ VGLSetXY(object, xc+x, yc-y, color);
+ VGLSetXY(object, xc-x, yc-y, color);
+ }
+ }
+ else {
+ VGLSetXY(object, xc, yc+y, color);
+ if (y!=0)
+ VGLSetXY(object, xc, yc-y, color);
+ }
+}
+
+void
+VGLEllipse(VGLBitmap *object, int xc, int yc, int a, int b, u_long color)
+{
+ int x = 0, y = b, asq = a*a, asq2 = a*a*2, bsq = b*b;
+ int bsq2 = b*b*2, d = bsq-asq*b+asq/4, dx = 0, dy = asq2*b;
+
+ while (dx<dy) {
+ set4pixels(object, x, y, xc, yc, color);
+ if (d>0) {
+ y--; dy-=asq2; d-=dy;
+ }
+ x++; dx+=bsq2; d+=bsq+dx;
+ }
+ d+=(3*(asq-bsq)/2-(dx+dy))/2;
+ while (y>=0) {
+ set4pixels(object, x, y, xc, yc, color);
+ if (d<0) {
+ x++; dx+=bsq2; d+=dx;
+ }
+ y--; dy-=asq2; d+=asq-dy;
+ }
+}
+
+static inline void
+set2lines(VGLBitmap *object, int x, int y, int xc, int yc, u_long color)
+{
+ if (x!=0) {
+ VGLLine(object, xc+x, yc+y, xc-x, yc+y, color);
+ if (y!=0)
+ VGLLine(object, xc+x, yc-y, xc-x, yc-y, color);
+ }
+ else {
+ VGLLine(object, xc, yc+y, xc, yc-y, color);
+ }
+}
+
+void
+VGLFilledEllipse(VGLBitmap *object, int xc, int yc, int a, int b, u_long color)
+{
+ int x = 0, y = b, asq = a*a, asq2 = a*a*2, bsq = b*b;
+ int bsq2 = b*b*2, d = bsq-asq*b+asq/4, dx = 0, dy = asq2*b;
+
+ while (dx<dy) {
+ set2lines(object, x, y, xc, yc, color);
+ if (d>0) {
+ y--; dy-=asq2; d-=dy;
+ }
+ x++; dx+=bsq2; d+=bsq+dx;
+ }
+ d+=(3*(asq-bsq)/2-(dx+dy))/2;
+ while (y>=0) {
+ set2lines(object, x, y, xc, yc, color);
+ if (d<0) {
+ x++; dx+=bsq2; d+=dx;
+ }
+ y--; dy-=asq2; d+=asq-dy;
+ }
+}
+
+void
+VGLClear(VGLBitmap *object, u_long color)
+{
+ VGLBitmap src;
+ int i, len, mousemode, offset;
+
+ VGLCheckSwitch();
+ if (object == VGLDisplay) {
+ VGLMouseFreeze();
+ VGLClear(&VGLVDisplay, color);
+ } else if (object->Type != MEMBUF)
+ return; /* invalid */
+ switch (object->Type) {
+ case MEMBUF:
+ case VIDBUF8:
+ case VIDBUF8S:
+ case VIDBUF16:
+ case VIDBUF16S:
+ case VIDBUF24:
+ case VIDBUF24S:
+ case VIDBUF32:
+ case VIDBUF32S:
+ src.Type = MEMBUF;
+ src.Xsize = object->Xsize;
+ src.VXsize = object->VXsize;
+ src.Ysize = 1;
+ src.VYsize = 1;
+ src.Xorigin = 0;
+ src.Yorigin = 0;
+ src.Bitmap = alloca(object->VXsize * object->PixelBytes);
+ src.PixelBytes = object->PixelBytes;
+ color = htole32(color);
+ for (i = 0; i < object->VXsize; i++)
+ bcopy(&color, src.Bitmap + i * object->PixelBytes, object->PixelBytes);
+ for (i = 0; i < object->VYsize; i++)
+ __VGLBitmapCopy(&src, 0, 0, object, 0, i, object->VXsize, -1);
+ break;
+
+ case VIDBUF8X:
+ mousemode = __VGLMouseMode(VGL_MOUSEHIDE);
+ /* XXX works only for Xsize % 4 = 0 */
+ outb(0x3c6, 0xff);
+ outb(0x3c4, 0x02); outb(0x3c5, 0x0f);
+ memset(object->Bitmap, (byte)color, VGLAdpInfo.va_line_width*object->VYsize);
+ __VGLMouseMode(mousemode);
+ break;
+
+ case VIDBUF4:
+ case VIDBUF4S:
+ mousemode = __VGLMouseMode(VGL_MOUSEHIDE);
+ /* XXX works only for Xsize % 8 = 0 */
+ outb(0x3c4, 0x02); outb(0x3c5, 0x0f);
+ outb(0x3ce, 0x05); outb(0x3cf, 0x02); /* mode 2 */
+ outb(0x3ce, 0x01); outb(0x3cf, 0x00); /* set/reset enable */
+ outb(0x3ce, 0x08); outb(0x3cf, 0xff); /* bit mask */
+ for (offset = 0; offset < VGLAdpInfo.va_line_width*object->VYsize; ) {
+ VGLSetSegment(offset);
+ len = min(object->VXsize*object->VYsize - offset,
+ VGLAdpInfo.va_window_size);
+ memset(object->Bitmap, (byte)color, len);
+ offset += len;
+ }
+ outb(0x3ce, 0x05); outb(0x3cf, 0x00);
+ __VGLMouseMode(mousemode);
+ break;
+ }
+ if (object == VGLDisplay)
+ VGLMouseUnFreeze();
+}
+
+static inline u_long
+VGLrgbToNative(uint16_t r, uint16_t g, uint16_t b)
+{
+ int nr, ng, nb;
+
+ nr = VGLModeInfo.vi_pixel_fsizes[2];
+ ng = VGLModeInfo.vi_pixel_fsizes[1];
+ nb = VGLModeInfo.vi_pixel_fsizes[0];
+ return (r >> (16 - nr) << (ng + nb)) | (g >> (16 - ng) << nb) |
+ (b >> (16 - nb) << 0);
+}
+
+u_long
+VGLrgb332ToNative(byte c)
+{
+ uint16_t r, g, b;
+
+ /* 3:3:2 to 16:16:16 */
+ r = ((c & 0xe0) >> 5) * 0xffff / 7;
+ g = ((c & 0x1c) >> 2) * 0xffff / 7;
+ b = ((c & 0x03) >> 0) * 0xffff / 3;
+
+ return VGLrgbToNative(r, g, b);
+}
+
+void
+VGLRestorePalette()
+{
+ int i;
+
+ if (VGLModeInfo.vi_mem_model == V_INFO_MM_DIRECT)
+ return;
+ outb(0x3C6, 0xFF);
+ inb(0x3DA);
+ outb(0x3C8, 0x00);
+ for (i=0; i<256; i++) {
+ outb(0x3C9, VGLSavePaletteRed[i]);
+ inb(0x84);
+ outb(0x3C9, VGLSavePaletteGreen[i]);
+ inb(0x84);
+ outb(0x3C9, VGLSavePaletteBlue[i]);
+ inb(0x84);
+ }
+ inb(0x3DA);
+ outb(0x3C0, 0x20);
+}
+
+void
+VGLSavePalette()
+{
+ int i;
+
+ if (VGLModeInfo.vi_mem_model == V_INFO_MM_DIRECT)
+ return;
+ outb(0x3C6, 0xFF);
+ inb(0x3DA);
+ outb(0x3C7, 0x00);
+ for (i=0; i<256; i++) {
+ VGLSavePaletteRed[i] = inb(0x3C9);
+ inb(0x84);
+ VGLSavePaletteGreen[i] = inb(0x3C9);
+ inb(0x84);
+ VGLSavePaletteBlue[i] = inb(0x3C9);
+ inb(0x84);
+ }
+ inb(0x3DA);
+ outb(0x3C0, 0x20);
+}
+
+void
+VGLSetPalette(byte *red, byte *green, byte *blue)
+{
+ int i;
+
+ if (VGLModeInfo.vi_mem_model == V_INFO_MM_DIRECT)
+ return;
+ for (i=0; i<256; i++) {
+ VGLSavePaletteRed[i] = red[i];
+ VGLSavePaletteGreen[i] = green[i];
+ VGLSavePaletteBlue[i] = blue[i];
+ }
+ VGLCheckSwitch();
+ outb(0x3C6, 0xFF);
+ inb(0x3DA);
+ outb(0x3C8, 0x00);
+ for (i=0; i<256; i++) {
+ outb(0x3C9, VGLSavePaletteRed[i]);
+ inb(0x84);
+ outb(0x3C9, VGLSavePaletteGreen[i]);
+ inb(0x84);
+ outb(0x3C9, VGLSavePaletteBlue[i]);
+ inb(0x84);
+ }
+ inb(0x3DA);
+ outb(0x3C0, 0x20);
+}
+
+void
+VGLSetPaletteIndex(byte color, byte red, byte green, byte blue)
+{
+ if (VGLModeInfo.vi_mem_model == V_INFO_MM_DIRECT)
+ return;
+ VGLSavePaletteRed[color] = red;
+ VGLSavePaletteGreen[color] = green;
+ VGLSavePaletteBlue[color] = blue;
+ VGLCheckSwitch();
+ outb(0x3C6, 0xFF);
+ inb(0x3DA);
+ outb(0x3C8, color);
+ outb(0x3C9, red); outb(0x3C9, green); outb(0x3C9, blue);
+ inb(0x3DA);
+ outb(0x3C0, 0x20);
+}
+
+void
+VGLRestoreBorder(void)
+{
+ VGLSetBorder(VGLBorderColor);
+}
+
+void
+VGLSetBorder(byte color)
+{
+ if (VGLModeInfo.vi_mem_model == V_INFO_MM_DIRECT && ioctl(0, KDENABIO, 0))
+ return;
+ VGLCheckSwitch();
+ inb(0x3DA);
+ outb(0x3C0,0x11); outb(0x3C0, color);
+ inb(0x3DA);
+ outb(0x3C0, 0x20);
+ VGLBorderColor = color;
+ if (VGLModeInfo.vi_mem_model == V_INFO_MM_DIRECT)
+ ioctl(0, KDDISABIO, 0);
+}
+
+void
+VGLRestoreBlank(void)
+{
+ VGLBlankDisplay(VGLBlank);
+}
+
+void
+VGLBlankDisplay(int blank)
+{
+ byte val;
+
+ if (VGLModeInfo.vi_mem_model == V_INFO_MM_DIRECT && ioctl(0, KDENABIO, 0))
+ return;
+ VGLCheckSwitch();
+ outb(0x3C4, 0x01); val = inb(0x3C5); outb(0x3C4, 0x01);
+ outb(0x3C5, ((blank) ? (val |= 0x20) : (val &= 0xDF)));
+ VGLBlank = blank;
+ if (VGLModeInfo.vi_mem_model == V_INFO_MM_DIRECT)
+ ioctl(0, KDDISABIO, 0);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-09 08:15:34 +0000