80b4b86eb3
not doing any unnecessary PIO instructions or refusing to start when the i/o privilege needed for these instructions cannot be acquired. This turns off useless palette management in direct modes. Palette management had no useful effect since the hardware palette is not used in these modes. This transiently acquires i/o privilege if possible as needed to give VGLSetBorder() and VGLBlankDisplay() a chance of working. Neither has much chance of working. I was going to drop support for them in direct modes, but found that VGLBlankDisplay() still works with an old graphics card on a not so old LCD monitor. This has some good side effects: reduce glitches for managing the palette for screen switches, and speed up and reduce async-signal-unsafeness in mouse cursor drawing.
346 lines
10 KiB
C
346 lines
10 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1991-1997 Søren Schmidt
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/signal.h>
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#include <sys/consio.h>
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#include <sys/fbio.h>
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#include "vgl.h"
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#define X 0xff
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static byte StdAndMask[MOUSE_IMG_SIZE*MOUSE_IMG_SIZE] = {
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X,X,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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X,X,X,0,0,0,0,0,0,0,0,0,0,0,0,0,
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X,X,X,X,0,0,0,0,0,0,0,0,0,0,0,0,
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X,X,X,X,X,0,0,0,0,0,0,0,0,0,0,0,
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X,X,X,X,X,X,0,0,0,0,0,0,0,0,0,0,
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X,X,X,X,X,X,X,0,0,0,0,0,0,0,0,0,
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X,X,X,X,X,X,X,X,0,0,0,0,0,0,0,0,
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X,X,X,X,X,X,X,X,X,0,0,0,0,0,0,0,
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X,X,X,X,X,X,X,0,0,0,0,0,0,0,0,0,
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0,0,0,X,X,X,X,0,0,0,0,0,0,0,0,0,
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0,0,0,X,X,X,X,X,0,0,0,0,0,0,0,0,
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0,0,0,0,X,X,X,X,0,0,0,0,0,0,0,0,
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0,0,0,0,X,X,X,X,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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};
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static byte StdOrMask[MOUSE_IMG_SIZE*MOUSE_IMG_SIZE] = {
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,X,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,X,X,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,X,X,X,0,0,0,0,0,0,0,0,0,0,0,0,
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0,X,X,X,X,0,0,0,0,0,0,0,0,0,0,0,
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0,X,X,X,X,X,0,0,0,0,0,0,0,0,0,0,
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0,X,X,X,X,X,X,0,0,0,0,0,0,0,0,0,
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0,X,X,0,X,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,X,X,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,X,X,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,X,X,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,X,X,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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};
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#undef X
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static VGLBitmap VGLMouseStdAndMask =
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VGLBITMAP_INITIALIZER(MEMBUF, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE, StdAndMask);
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static VGLBitmap VGLMouseStdOrMask =
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VGLBITMAP_INITIALIZER(MEMBUF, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE, StdOrMask);
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static VGLBitmap *VGLMouseAndMask, *VGLMouseOrMask;
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static byte map[MOUSE_IMG_SIZE*MOUSE_IMG_SIZE*4];
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static VGLBitmap VGLMouseSave =
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VGLBITMAP_INITIALIZER(MEMBUF, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE, map);
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static int VGLMouseVisible = 0;
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static int VGLMouseShown = 0;
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static int VGLMouseXpos = 0;
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static int VGLMouseYpos = 0;
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static int VGLMouseButtons = 0;
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static volatile sig_atomic_t VGLMintpending;
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static volatile sig_atomic_t VGLMsuppressint;
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#define INTOFF() (VGLMsuppressint++)
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#define INTON() do { \
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if (--VGLMsuppressint == 0 && VGLMintpending) \
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VGLMouseAction(0); \
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} while (0)
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void
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VGLMousePointerShow()
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{
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byte buf[MOUSE_IMG_SIZE*MOUSE_IMG_SIZE*4];
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VGLBitmap buffer =
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VGLBITMAP_INITIALIZER(MEMBUF, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE, buf);
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byte crtcidx, crtcval, gdcidx, gdcval;
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int i, pos, pos1;
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if (!VGLMouseVisible) {
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INTOFF();
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VGLMouseVisible = 1;
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if (VGLModeInfo.vi_mem_model != V_INFO_MM_DIRECT) {
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crtcidx = inb(0x3c4);
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crtcval = inb(0x3c5);
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gdcidx = inb(0x3ce);
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gdcval = inb(0x3cf);
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}
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__VGLBitmapCopy(VGLDisplay, VGLMouseXpos, VGLMouseYpos,
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&VGLMouseSave, 0, 0, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE);
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bcopy(VGLMouseSave.Bitmap, buffer.Bitmap,
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MOUSE_IMG_SIZE*MOUSE_IMG_SIZE*VGLDisplay->PixelBytes);
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for (pos = 0; pos < MOUSE_IMG_SIZE*MOUSE_IMG_SIZE; pos++)
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for (i = 0; i < VGLDisplay->PixelBytes; i++) {
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pos1 = pos * VGLDisplay->PixelBytes + i;
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buffer.Bitmap[pos1] = (buffer.Bitmap[pos1] &
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~VGLMouseAndMask->Bitmap[pos]) |
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VGLMouseOrMask->Bitmap[pos];
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}
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__VGLBitmapCopy(&buffer, 0, 0, VGLDisplay,
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VGLMouseXpos, VGLMouseYpos, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE);
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if (VGLModeInfo.vi_mem_model != V_INFO_MM_DIRECT) {
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outb(0x3c4, crtcidx);
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outb(0x3c5, crtcval);
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outb(0x3ce, gdcidx);
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outb(0x3cf, gdcval);
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}
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INTON();
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}
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}
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void
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VGLMousePointerHide()
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{
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byte crtcidx, crtcval, gdcidx, gdcval;
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if (VGLMouseVisible) {
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INTOFF();
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VGLMouseVisible = 0;
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if (VGLModeInfo.vi_mem_model != V_INFO_MM_DIRECT) {
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crtcidx = inb(0x3c4);
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crtcval = inb(0x3c5);
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gdcidx = inb(0x3ce);
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gdcval = inb(0x3cf);
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}
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__VGLBitmapCopy(&VGLMouseSave, 0, 0, VGLDisplay,
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VGLMouseXpos, VGLMouseYpos, MOUSE_IMG_SIZE, MOUSE_IMG_SIZE);
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if (VGLModeInfo.vi_mem_model != V_INFO_MM_DIRECT) {
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outb(0x3c4, crtcidx);
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outb(0x3c5, crtcval);
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outb(0x3ce, gdcidx);
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outb(0x3cf, gdcval);
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}
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INTON();
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}
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}
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void
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VGLMouseMode(int mode)
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{
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if (mode == VGL_MOUSESHOW) {
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if (VGLMouseShown == VGL_MOUSEHIDE) {
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VGLMousePointerShow();
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VGLMouseShown = VGL_MOUSESHOW;
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}
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}
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else {
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if (VGLMouseShown == VGL_MOUSESHOW) {
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VGLMousePointerHide();
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VGLMouseShown = VGL_MOUSEHIDE;
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}
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}
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}
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void
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VGLMouseAction(int dummy)
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{
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struct mouse_info mouseinfo;
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if (VGLMsuppressint) {
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VGLMintpending = 1;
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return;
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}
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again:
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INTOFF();
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VGLMintpending = 0;
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mouseinfo.operation = MOUSE_GETINFO;
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ioctl(0, CONS_MOUSECTL, &mouseinfo);
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if (VGLMouseShown == VGL_MOUSESHOW)
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VGLMousePointerHide();
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VGLMouseXpos = mouseinfo.u.data.x;
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VGLMouseYpos = mouseinfo.u.data.y;
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VGLMouseButtons = mouseinfo.u.data.buttons;
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if (VGLMouseShown == VGL_MOUSESHOW)
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VGLMousePointerShow();
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/*
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* Loop to handle any new (suppressed) signals. This is INTON() without
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* recursion. !SA_RESTART prevents recursion in signal handling. So the
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* maximum recursion is 2 levels.
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*/
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VGLMsuppressint = 0;
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if (VGLMintpending)
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goto again;
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}
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void
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VGLMouseSetImage(VGLBitmap *AndMask, VGLBitmap *OrMask)
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{
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if (VGLMouseShown == VGL_MOUSESHOW)
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VGLMousePointerHide();
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VGLMouseAndMask = AndMask;
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VGLMouseOrMask = OrMask;
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if (VGLMouseShown == VGL_MOUSESHOW)
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VGLMousePointerShow();
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}
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void
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VGLMouseSetStdImage()
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{
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if (VGLMouseShown == VGL_MOUSESHOW)
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VGLMousePointerHide();
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VGLMouseAndMask = &VGLMouseStdAndMask;
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VGLMouseOrMask = &VGLMouseStdOrMask;
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if (VGLMouseShown == VGL_MOUSESHOW)
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VGLMousePointerShow();
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}
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int
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VGLMouseInit(int mode)
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{
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struct mouse_info mouseinfo;
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int error, i, mask;
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switch (VGLModeInfo.vi_mem_model) {
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case V_INFO_MM_PACKED:
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case V_INFO_MM_PLANAR:
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mask = 0x0f;
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break;
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case V_INFO_MM_VGAX:
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mask = 0x3f;
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break;
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default:
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mask = 0xff;
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break;
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}
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for (i = 0; i < 256; i++)
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VGLMouseStdOrMask.Bitmap[i] &= mask;
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VGLMouseSetStdImage();
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mouseinfo.operation = MOUSE_MODE;
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mouseinfo.u.mode.signal = SIGUSR2;
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if ((error = ioctl(0, CONS_MOUSECTL, &mouseinfo)))
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return error;
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signal(SIGUSR2, VGLMouseAction);
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mouseinfo.operation = MOUSE_GETINFO;
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ioctl(0, CONS_MOUSECTL, &mouseinfo);
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VGLMouseXpos = mouseinfo.u.data.x;
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VGLMouseYpos = mouseinfo.u.data.y;
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VGLMouseButtons = mouseinfo.u.data.buttons;
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VGLMouseMode(mode);
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return 0;
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}
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int
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VGLMouseStatus(int *x, int *y, char *buttons)
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{
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INTOFF();
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*x = VGLMouseXpos;
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*y = VGLMouseYpos;
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*buttons = VGLMouseButtons;
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INTON();
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return VGLMouseShown;
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}
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int
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VGLMouseFreeze(int x, int y, int width, int hight, u_long color)
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{
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int i, xstride, ystride;
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INTOFF();
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if (width > 1 || hight > 1 || (color & 0xc0000000) == 0) { /* bitmap */
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if (VGLMouseShown == 1) {
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int overlap;
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if (x > VGLMouseXpos)
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overlap = (VGLMouseXpos + MOUSE_IMG_SIZE) - x;
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else
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overlap = (x + width) - VGLMouseXpos;
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if (overlap > 0) {
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if (y > VGLMouseYpos)
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overlap = (VGLMouseYpos + MOUSE_IMG_SIZE) - y;
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else
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overlap = (y + hight) - VGLMouseYpos;
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if (overlap > 0)
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VGLMousePointerHide();
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}
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}
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}
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else { /* bit */
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if (VGLMouseShown &&
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x >= VGLMouseXpos && x < VGLMouseXpos + MOUSE_IMG_SIZE &&
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y >= VGLMouseYpos && y < VGLMouseYpos + MOUSE_IMG_SIZE) {
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xstride = VGLDisplay->PixelBytes;
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ystride = MOUSE_IMG_SIZE * xstride;
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if (color & 0x40000000) { /* Get */
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color = 0;
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for (i = xstride - 1; i >= 0; i--)
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color = (color << 8) |
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VGLMouseSave.Bitmap[(y-VGLMouseYpos)*ystride+
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(x-VGLMouseXpos)*xstride+i];
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return 0x40000000 | (color & 0xffffff);
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} else { /* Set */
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color &= 0xffffff; /* discard flag and other garbage */
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for (i = 0; i < xstride; i++, color >>= 8)
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VGLMouseSave.Bitmap[(y-VGLMouseYpos)*ystride+
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(x-VGLMouseXpos)*xstride+i] = color;
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if (VGLMouseAndMask->Bitmap
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[(y-VGLMouseYpos)*MOUSE_IMG_SIZE+(x-VGLMouseXpos)]) {
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return 1;
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}
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}
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}
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}
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return 0;
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}
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void
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VGLMouseUnFreeze()
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{
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if (VGLMouseShown == VGL_MOUSESHOW && !VGLMouseVisible && !VGLMintpending)
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VGLMousePointerShow();
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while (VGLMsuppressint)
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INTON();
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}
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