mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-12-12 05:31:59 +00:00
af56e9242b
The actual x11 update code was identical between all versions, so it was moved into the one function.
686 lines
16 KiB
C
686 lines
16 KiB
C
/*
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vid_x11_sw.c
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Software X11 video driver (8/32 bit)
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Copyright (C) 1996-1997 Id Software, Inc.
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Copyright (C) 1999-2000 contributors of the QuakeForge project
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Copyright (C) 2000 Marcus Sundberg [mackan@stacken.kth.se]
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Copyright (C) 1999,2000 contributors of the QuakeForge project
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Please see the file "AUTHORS" for a list of contributors
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#include <ctype.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/extensions/XShm.h>
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#include "QF/cvar.h"
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#include "QF/qargs.h"
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#include "QF/sys.h"
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#include "QF/vid.h"
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#include "context_x11.h"
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#include "r_internal.h"
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#include "vid_internal.h"
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#include "vid_sw.h"
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int XShmGetEventBase (Display *x); // for broken X11 headers
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static GC x_gc;
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static cvar_t *vid_bitdepth;
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static qboolean doShm;
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static XShmSegmentInfo x_shminfo[2];
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static int current_framebuffer;
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static XImage *x_framebuffer[2] = { 0, 0 };
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typedef unsigned char PIXEL8;
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typedef unsigned short PIXEL16;
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typedef unsigned int PIXEL24;
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static PIXEL16 st2d_8to16table[256];
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static PIXEL24 st2d_8to24table[256];
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static byte current_palette[768];
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static int shiftmask_fl = 0;
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static long r_shift, g_shift, b_shift;
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static unsigned long r_mask, g_mask, b_mask;
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static void
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shiftmask_init (void)
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{
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unsigned long long x;
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r_mask = x_vis->red_mask;
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g_mask = x_vis->green_mask;
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b_mask = x_vis->blue_mask;
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for (r_shift = -8, x = 1; x < r_mask; x <<= 1)
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r_shift++;
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for (g_shift = -8, x = 1; x < g_mask; x <<= 1)
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g_shift++;
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for (b_shift = -8, x = 1; x < b_mask; x <<= 1)
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b_shift++;
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shiftmask_fl = 1;
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}
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static PIXEL16
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xlib_rgb16 (int r, int g, int b)
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{
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PIXEL16 p = 0;
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if (!shiftmask_fl)
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shiftmask_init ();
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if (r_shift > 0) {
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p = (r << (r_shift)) & r_mask;
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} else {
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if (r_shift < 0) {
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p = (r >> (-r_shift)) & r_mask;
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} else {
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p |= (r & r_mask);
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}
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}
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if (g_shift > 0) {
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p |= (g << (g_shift)) & g_mask;
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} else {
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if (g_shift < 0) {
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p |= (g >> (-g_shift)) & g_mask;
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} else {
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p |= (g & g_mask);
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}
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}
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if (b_shift > 0) {
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p |= (b << (b_shift)) & b_mask;
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} else {
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if (b_shift < 0) {
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p |= (b >> (-b_shift)) & b_mask;
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} else {
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p |= (b & b_mask);
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}
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}
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return p;
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}
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static PIXEL24
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xlib_rgb24 (int r, int g, int b)
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{
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PIXEL24 p = 0;
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if (!shiftmask_fl)
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shiftmask_init ();
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if (r_shift > 0) {
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p = (r << (r_shift)) & r_mask;
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} else {
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if (r_shift < 0) {
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p = (r >> (-r_shift)) & r_mask;
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} else {
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p |= (r & r_mask);
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}
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}
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if (g_shift > 0) {
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p |= (g << (g_shift)) & g_mask;
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} else {
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if (g_shift < 0) {
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p |= (g >> (-g_shift)) & g_mask;
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} else {
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p |= (g & g_mask);
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}
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}
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if (b_shift > 0) {
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p |= (b << (b_shift)) & b_mask;
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} else {
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if (b_shift < 0) {
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p |= (b >> (-b_shift)) & b_mask;
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} else {
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p |= (b & b_mask);
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}
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}
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return p;
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}
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static void
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x11_set_palette (sw_ctx_t *ctx, const byte *palette)
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{
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int i;
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XColor colors[256];
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for (i = 0; i < 256; i++) {
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st2d_8to16table[i] = xlib_rgb16 (palette[i * 3], palette[i * 3 + 1],
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palette[i * 3 + 2]);
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st2d_8to24table[i] = xlib_rgb24 (palette[i * 3], palette[i * 3 + 1],
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palette[i * 3 + 2]);
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}
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if (x_visinfo->class == PseudoColor && x_visinfo->depth == 8) {
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if (palette != current_palette) {
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memcpy (current_palette, palette, 768);
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}
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for (i = 0; i < 256; i++) {
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colors[i].pixel = i;
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colors[i].flags = DoRed | DoGreen | DoBlue;
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colors[i].red = palette[(i * 3)] << 8;
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colors[i].green = palette[(i * 3) + 1] << 8;
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colors[i].blue = palette[(i * 3) + 2] << 8;
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}
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XStoreColors (x_disp, x_cmap, colors, 256);
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}
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}
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static void
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st2_fixup (XImage *framebuf, int x, int y, int width, int height)
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{
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int xi, yi;
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unsigned char *src;
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PIXEL16 *dest;
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if (x < 0 || y < 0)
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return;
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for (yi = y; yi < (y + height); yi++) {
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src = &((byte *)viddef.buffer)[yi * viddef.width];
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dest = (PIXEL16 *) &framebuf->data[yi * framebuf->bytes_per_line];
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for (xi = x; xi < x + width; xi++) {
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dest[xi] = st2d_8to16table[src[xi]];
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}
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}
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}
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static void
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st3_fixup (XImage * framebuf, int x, int y, int width, int height)
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{
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int yi;
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unsigned char *src;
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PIXEL24 *dest;
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register int count, n;
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if (x < 0 || y < 0)
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return;
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for (yi = y; yi < (y + height); yi++) {
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src = &((byte *)viddef.buffer)[yi * viddef.width + x];
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dest = (PIXEL24 *) &framebuf->data[yi * framebuf->bytes_per_line + x];
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// Duff's Device
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count = width;
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n = (count + 7) / 8;
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switch (count % 8) {
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case 0:
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do {
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*dest++ = st2d_8to24table[*src++];
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case 7:
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*dest++ = st2d_8to24table[*src++];
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case 6:
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*dest++ = st2d_8to24table[*src++];
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case 5:
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*dest++ = st2d_8to24table[*src++];
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case 4:
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*dest++ = st2d_8to24table[*src++];
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case 3:
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*dest++ = st2d_8to24table[*src++];
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case 2:
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*dest++ = st2d_8to24table[*src++];
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case 1:
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*dest++ = st2d_8to24table[*src++];
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} while (--n > 0);
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}
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}
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}
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static void
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x11_put_image (vrect_t *rects)
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{
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if (doShm) {
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if (!XShmPutImage (x_disp, x_win, x_gc,
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x_framebuffer[current_framebuffer],
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rects->x, rects->y, rects->x, rects->y,
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rects->width, rects->height, True)) {
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Sys_Error ("VID_Update: XShmPutImage failed");
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}
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oktodraw = false;
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while (!oktodraw)
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X11_ProcessEvent ();
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current_framebuffer = !current_framebuffer;
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} else {
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if (XPutImage (x_disp, x_win, x_gc, x_framebuffer[0],
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rects->x, rects->y, rects->x, rects->y,
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rects->width, rects->height)) {
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Sys_Error ("VID_Update: XPutImage failed");
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}
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}
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}
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/*
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Flush the given rectangles from the view buffer to the screen.
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*/
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static void
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x11_sw8_update (sw_ctx_t *ctx, vrect_t *rects)
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{
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while (rects) {
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switch (x_visinfo->depth) {
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case 16:
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st2_fixup (x_framebuffer[current_framebuffer],
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rects->x, rects->y, rects->width, rects->height);
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break;
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case 24:
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st3_fixup (x_framebuffer[current_framebuffer],
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rects->x, rects->y, rects->width, rects->height);
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break;
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}
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x11_put_image (rects);
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rects = rects->next;
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}
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XSync (x_disp, False);
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r_data->scr_fullupdate = 0;
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}
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static void
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x11_sw16_16_update (sw_ctx_t *ctx, vrect_t *rects)
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{
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uint16_t *buffer = (uint16_t *) viddef.buffer;
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XImage *framebuf = x_framebuffer[current_framebuffer];
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int rowbytes = framebuf->bytes_per_line;
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while (rects) {
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int x = rects->x;
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int y = rects->y;
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int width = rects->width;
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int height = rects->height;
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for (int yi = y; yi < (y + height); yi++) {
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uint16_t *src = buffer + yi * viddef.width + x;
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PIXEL16 *dest = (PIXEL16 *) (framebuf->data + yi * rowbytes) + x;
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for (int count = width; count-- > 0; ) {
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*dest++ = *src++;
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}
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}
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x11_put_image (rects);
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rects = rects->next;
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}
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XSync (x_disp, False);
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r_data->scr_fullupdate = 0;
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}
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static void
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x11_sw16_32_update (sw_ctx_t *ctx, vrect_t *rects)
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{
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uint16_t *buffer = (uint16_t *) viddef.buffer;
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XImage *framebuf = x_framebuffer[current_framebuffer];
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int rowbytes = framebuf->bytes_per_line;
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while (rects) {
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int x = rects->x;
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int y = rects->y;
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int width = rects->width;
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int height = rects->height;
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for (int yi = y; yi < (y + height); yi++) {
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uint16_t *src = buffer + yi * viddef.width + x;
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PIXEL24 *dest = (PIXEL24 *) (framebuf->data + yi * rowbytes) + x;
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for (int count = width; count-- > 0; ) {
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uint32_t c = *src++;
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*dest++ = 0xff000000
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| ((c & 0xf800) << 8)
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| ((c & 0x07e0) << 5)
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| ((c & 0x001f) << 3);
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}
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}
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x11_put_image (rects);
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rects = rects->next;
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}
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XSync (x_disp, False);
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r_data->scr_fullupdate = 0;
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}
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static void
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x11_sw32_update (sw_ctx_t *ctx, vrect_t *rects)
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{
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uint32_t *buffer = (uint32_t *) viddef.buffer;
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XImage *framebuf = x_framebuffer[current_framebuffer];
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int rowbytes = framebuf->bytes_per_line;
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while (rects) {
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int x = rects->x;
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int y = rects->y;
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int width = rects->width;
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int height = rects->height;
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for (int yi = y; yi < (y + height); yi++) {
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uint32_t *src = buffer + yi * viddef.width + x;
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PIXEL24 *dest = (PIXEL24 *) (framebuf->data + yi * rowbytes) + x;
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for (int count = width; count-- > 0; ) {
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*dest++ = *src++;
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}
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}
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x11_put_image (rects);
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rects = rects->next;
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}
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XSync (x_disp, False);
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r_data->scr_fullupdate = 0;
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}
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static void
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x11_choose_visual (sw_ctx_t *ctx)
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{
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int pnum, i;
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XVisualInfo template;
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int num_visuals;
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int template_mask;
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// specify a visual id
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if ((pnum = COM_CheckParm ("-visualid"))) {
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if (pnum >= com_argc - 1)
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Sys_Error ("VID: -visualid <id#>");
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template.visualid = atoi (com_argv[pnum + 1]);
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template_mask = VisualIDMask;
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} else { // If not specified, use default
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// visual
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template.visualid =
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XVisualIDFromVisual (XDefaultVisual (x_disp, x_screen));
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template_mask = VisualIDMask;
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}
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// pick a visual -- warn if more than one was available
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x_visinfo = XGetVisualInfo (x_disp, template_mask, &template,
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&num_visuals);
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if (x_visinfo->depth == 8 && x_visinfo->class == PseudoColor)
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x_cmap = XCreateColormap (x_disp, x_win, x_vis, AllocAll);
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x_vis = x_visinfo->visual;
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ctx->update = x11_sw8_update;
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switch (x_visinfo->depth) {
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case 8:
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ctx->pixbytes = 1;
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ctx->update = x11_sw8_update;
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break;
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case 16:
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if (ctx->pixbytes > 2) {
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ctx->pixbytes = 2;
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}
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if (ctx->pixbytes == 2) {
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ctx->update = x11_sw16_16_update;
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}
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break;
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case 24:
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switch (ctx->pixbytes) {
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case 1:
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break;
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case 2:
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ctx->update = x11_sw16_32_update;
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break;
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case 4:
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ctx->update = x11_sw32_update;
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break;
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}
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break;
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}
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if (num_visuals > 1) {
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Sys_MaskPrintf (SYS_vid,
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"Found more than one visual id at depth %d:\n",
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template.depth);
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for (i = 0; i < num_visuals; i++)
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Sys_MaskPrintf (SYS_vid, " -visualid %d\n",
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(int) x_visinfo[i].visualid);
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} else {
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if (num_visuals == 0) {
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if (template_mask == VisualIDMask) {
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Sys_Error ("VID: Bad visual ID %ld", template.visualid);
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} else {
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Sys_Error ("VID: No visuals at depth %d", template.depth);
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}
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}
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}
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Sys_MaskPrintf (SYS_vid, "Using visualid %d:\n",
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(int) x_visinfo->visualid);
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Sys_MaskPrintf (SYS_vid, " class %d\n", x_visinfo->class);
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Sys_MaskPrintf (SYS_vid, " screen %d\n", x_visinfo->screen);
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Sys_MaskPrintf (SYS_vid, " depth %d\n", x_visinfo->depth);
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Sys_MaskPrintf (SYS_vid, " red_mask 0x%x\n",
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(int) x_visinfo->red_mask);
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Sys_MaskPrintf (SYS_vid, " green_mask 0x%x\n",
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(int) x_visinfo->green_mask);
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Sys_MaskPrintf (SYS_vid, " blue_mask 0x%x\n",
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(int) x_visinfo->blue_mask);
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Sys_MaskPrintf (SYS_vid, " colormap_size %d\n",
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x_visinfo->colormap_size);
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Sys_MaskPrintf (SYS_vid, " bits_per_rgb %d\n",
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x_visinfo->bits_per_rgb);
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}
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static void
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ResetFrameBuffer (void)
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{
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int mem, pwidth;
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char *buf;
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if (x_framebuffer[0]) {
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XDestroyImage (x_framebuffer[0]);
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}
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pwidth = x_visinfo->depth / 8;
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|
|
if (pwidth == 3)
|
|
pwidth = 4;
|
|
mem = ((viddef.width * pwidth + 7) & ~7) * viddef.height;
|
|
buf = malloc (mem);
|
|
SYS_CHECKMEM (buf);
|
|
|
|
// allocate new screen buffer
|
|
x_framebuffer[0] = XCreateImage (x_disp, x_vis, x_visinfo->depth,
|
|
ZPixmap, 0, buf, viddef.width,
|
|
viddef.height, 32, 0);
|
|
|
|
if (!x_framebuffer[0]) {
|
|
Sys_Error ("VID: XCreateImage failed");
|
|
}
|
|
}
|
|
|
|
static void
|
|
ResetSharedFrameBuffers (void)
|
|
{
|
|
int size;
|
|
int key;
|
|
int minsize = getpagesize ();
|
|
int frm;
|
|
|
|
for (frm = 0; frm < 2; frm++) {
|
|
|
|
// free up old frame buffer memory
|
|
if (x_framebuffer[frm]) {
|
|
XShmDetach (x_disp, &x_shminfo[frm]);
|
|
free (x_framebuffer[frm]);
|
|
shmdt (x_shminfo[frm].shmaddr);
|
|
}
|
|
// create the image
|
|
x_framebuffer[frm] = XShmCreateImage (x_disp, x_vis, x_visinfo->depth,
|
|
ZPixmap, 0, &x_shminfo[frm],
|
|
viddef.width, viddef.height);
|
|
|
|
// grab shared memory
|
|
size = x_framebuffer[frm]->bytes_per_line * x_framebuffer[frm]->height;
|
|
|
|
if (size < minsize)
|
|
Sys_Error ("VID: Window must use at least %d bytes", minsize);
|
|
|
|
key = random ();
|
|
x_shminfo[frm].shmid = shmget ((key_t) key, size, IPC_CREAT | 0777);
|
|
if (x_shminfo[frm].shmid == -1)
|
|
Sys_Error ("VID: Could not get any shared memory (%s)",
|
|
strerror (errno));
|
|
|
|
// attach to the shared memory segment
|
|
x_shminfo[frm].shmaddr = (void *) shmat (x_shminfo[frm].shmid, 0, 0);
|
|
|
|
Sys_MaskPrintf (SYS_vid, "VID: shared memory id=%d, addr=0x%lx\n",
|
|
x_shminfo[frm].shmid, (long) x_shminfo[frm].shmaddr);
|
|
|
|
x_framebuffer[frm]->data = x_shminfo[frm].shmaddr;
|
|
|
|
// get the X server to attach to it
|
|
if (!XShmAttach (x_disp, &x_shminfo[frm]))
|
|
Sys_Error ("VID: XShmAttach() failed");
|
|
XSync (x_disp, 0);
|
|
shmctl (x_shminfo[frm].shmid, IPC_RMID, 0);
|
|
|
|
}
|
|
}
|
|
|
|
static void
|
|
x11_init_buffers (void *data)
|
|
{
|
|
sw_ctx_t *ctx = data;
|
|
if (doShm)
|
|
ResetSharedFrameBuffers ();
|
|
else
|
|
ResetFrameBuffer ();
|
|
|
|
current_framebuffer = 0;
|
|
|
|
viddef.rowbytes = ctx->pixbytes * viddef.width;
|
|
if (x_visinfo->depth != 8) {
|
|
if (viddef.buffer)
|
|
free (viddef.buffer);
|
|
viddef.buffer = calloc (viddef.rowbytes, viddef.height);
|
|
if (!viddef.buffer)
|
|
Sys_Error ("Not enough memory for video mode");
|
|
} else {
|
|
viddef.buffer = x_framebuffer[current_framebuffer]->data;
|
|
}
|
|
}
|
|
|
|
static void
|
|
x11_create_context (sw_ctx_t *ctx)
|
|
{
|
|
// create the GC
|
|
{
|
|
XGCValues xgcvalues;
|
|
int valuemask = GCGraphicsExposures;
|
|
|
|
xgcvalues.graphics_exposures = False;
|
|
x_gc = XCreateGC (x_disp, x_win, valuemask, &xgcvalues);
|
|
}
|
|
|
|
// even if MITSHM is available, make sure it's a local connection
|
|
if (XShmQueryExtension (x_disp)) {
|
|
char *displayname;
|
|
char *d;
|
|
|
|
doShm = true;
|
|
|
|
if ((displayname = XDisplayName (NULL))) {
|
|
if ((d = strchr (displayname, ':')))
|
|
*d = '\0';
|
|
|
|
if (!(!strcasecmp (displayname, "unix") || !*displayname))
|
|
doShm = false;
|
|
}
|
|
}
|
|
|
|
if (doShm) {
|
|
x_shmeventtype = XShmGetEventBase (x_disp) + ShmCompletion;
|
|
}
|
|
|
|
viddef.vid_internal->init_buffers = x11_init_buffers;
|
|
// XSynchronize (x_disp, False);
|
|
// X11_AddEvent (x_shmeventtype, event_shm);
|
|
}
|
|
|
|
sw_ctx_t *
|
|
X11_SW_Context (void)
|
|
{
|
|
sw_ctx_t *ctx = calloc (1, sizeof (sw_ctx_t));
|
|
ctx->pixbytes = 1;
|
|
ctx->set_palette = x11_set_palette;
|
|
ctx->choose_visual = x11_choose_visual;
|
|
ctx->create_context = x11_create_context;
|
|
ctx->update = x11_sw8_update;
|
|
return ctx;
|
|
}
|
|
|
|
sw_ctx_t *
|
|
X11_SW32_Context (void)
|
|
{
|
|
sw_ctx_t *ctx = calloc (1, sizeof (sw_ctx_t));
|
|
ctx->pixbytes = 1;
|
|
ctx->set_palette = x11_set_palette;
|
|
ctx->choose_visual = x11_choose_visual;
|
|
ctx->create_context = x11_create_context;
|
|
|
|
switch (vid_bitdepth->int_val) {
|
|
case 8:
|
|
ctx->pixbytes = 1;
|
|
break;
|
|
case 16:
|
|
ctx->pixbytes = 2;
|
|
break;
|
|
case 32:
|
|
ctx->pixbytes = 4;
|
|
break;
|
|
default:
|
|
Sys_Error ("X11_SW32_Context: unsupported bit depth");
|
|
}
|
|
return ctx;
|
|
}
|
|
|
|
void
|
|
X11_SW_Init_Cvars (void)
|
|
{
|
|
// FIXME: vid_colorbpp in common GL setup, make consistent with sdl32 scheme
|
|
vid_bitdepth = Cvar_Get ("vid_bitdepth", "8", CVAR_ROM, NULL, "Sets "
|
|
"display bitdepth (supported modes: 8 16 32)");
|
|
}
|