--- /dev/null
+/*
+This file is part of 3dengfx, realtime visualization system.
+Copyright (C) 2004, 2005, 2006 John Tsiombikas <nuclear@siggraph.org>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+*/
+
+/* OpenGL through GLX (X Window System)
+ *
+ * Author: John Tsiombikas 2005
+ */
+
+#include "3dengfx_config.h"
+
+#if GFX_LIBRARY == NATIVE && NATIVE_LIB == NATIVE_X11
+
+#include <stdlib.h>
+#include "init.hpp"
+#include "gfx_library.h"
+#include "3dengfx/3denginefx.hpp"
+#include "common/err_msg.h"
+
+#ifdef USE_XF86VIDMODE
+#include <X11/extensions/xf86vmode.h>
+
+static XF86VidModeModeInfo orig_mode;
+#endif // USE_XF86VIDMODE
+
+Display *fxwt_x_dpy;
+Window fxwt_x_win;
+static GLXContext glx_ctx;
+static bool fullscreen = false;
+
+bool fxwt::init_graphics(GraphicsInitParameters *gparams) {
+ Display *dpy;
+ Window win;
+ info("Initializing GLX");
+
+ if(!(dpy = XOpenDisplay(0))) {
+ error("Could not connect to the X server");
+ return false;
+ }
+
+ int screen = DefaultScreen(dpy);
+ Window root_win = RootWindow(dpy, screen);
+
+ info("Trying to set video mode %dx%dx%d, d:%d s:%d %s", gparams->x, gparams->y, gparams->bpp, gparams->depth_bits, gparams->stencil_bits, gparams->fullscreen ? "fullscreen" : "windowed");
+
+ // determine color bits
+ int color_bits = 1;
+ if(!(gparams->dont_care_flags & DONT_CARE_BPP)) {
+ switch(gparams->bpp) {
+ case 32:
+ case 24:
+ color_bits = 8;
+ break;
+
+ case 16:
+ case 15:
+ color_bits = 5;
+ break;
+
+ case 12:
+ color_bits = 4;
+ break;
+
+ default:
+ error("%s: Tried to set unsupported pixel format: %d bpp", __func__, gparams->bpp);
+ }
+ }
+
+ // determine stencil bits
+ int stencil_bits = gparams->stencil_bits;
+ if(gparams->dont_care_flags & DONT_CARE_STENCIL) {
+ stencil_bits = 1;
+ }
+
+ // determine zbuffer bits
+ int zbits = gparams->depth_bits == 32 ? 24 : gparams->depth_bits;
+ if(gparams->dont_care_flags & DONT_CARE_BPP) {
+ zbits = 1;
+ }
+
+ int glx_attrib[] = {
+ GLX_RGBA, GLX_DOUBLEBUFFER,
+ GLX_RED_SIZE, color_bits,
+ GLX_GREEN_SIZE, color_bits,
+ GLX_BLUE_SIZE, color_bits,
+ GLX_DEPTH_SIZE, zbits,
+ GLX_STENCIL_SIZE, stencil_bits,
+ None
+ };
+
+ XVisualInfo *vis_info;
+ if(!(vis_info = glXChooseVisual(dpy, screen, glx_attrib))) {
+ error("%s: Could not set requested video mode", __func__);
+ XCloseDisplay(dpy);
+ return false;
+ }
+
+ // check the video mode we got
+ int arbits, agbits, abbits, azbits, astencilbits;
+ glXGetConfig(dpy, vis_info, GLX_RED_SIZE, &arbits);
+ glXGetConfig(dpy, vis_info, GLX_GREEN_SIZE, &agbits);
+ glXGetConfig(dpy, vis_info, GLX_BLUE_SIZE, &abbits);
+ glXGetConfig(dpy, vis_info, GLX_DEPTH_SIZE, &azbits);
+ glXGetConfig(dpy, vis_info, GLX_STENCIL_SIZE, &astencilbits);
+
+ info("Initialized video mode:");
+ info(" bpp: %d (%d%d%d)", arbits + agbits + abbits, arbits, agbits, abbits);
+ info("zbuffer: %d", azbits);
+ info("stencil: %d", astencilbits);
+
+ /* if the dont_care_flags does not contain DONT_CARE_BPP and our color bits
+ * does not match, we should return failure, however we test against
+ * the difference allowing a +/-1 difference in order to allow for 16bpp
+ * formats of either 565 or 555 and consider them equal.
+ */
+ if(!(gparams->dont_care_flags & DONT_CARE_BPP) && abs(arbits - color_bits) > 1 && abs(agbits - color_bits) > 1 && abs(abbits - color_bits) > 1) {
+ error("%s: Could not set requested exact bpp mode", __func__);
+ XFree(vis_info);
+ XCloseDisplay(dpy);
+ return false;
+ }
+
+ // now if we don't have DONT_CARE_DEPTH in the dont_care_flags check for
+ // exact depth buffer format, however consider 24 and 32 bit the same
+ if(!(gparams->dont_care_flags & DONT_CARE_DEPTH) && azbits != zbits) {
+ if(!(zbits == 32 && azbits == 24 || zbits == 24 && azbits == 32)) {
+ error("%s: Could not set requested exact zbuffer depth", __func__);
+ XFree(vis_info);
+ XCloseDisplay(dpy);
+ return false;
+ }
+ }
+
+ // if we don't have DONT_CARE_STENCIL make sure we have the stencil format
+ // that was asked.
+ if(!(gparams->dont_care_flags & DONT_CARE_STENCIL) && astencilbits != gparams->stencil_bits) {
+ error("%s: Could not set exact stencil format", __func__);
+ XFree(vis_info);
+ XCloseDisplay(dpy);
+ return false;
+ }
+
+ // everything is ok, create the context
+ if(!(glx_ctx = glXCreateContext(dpy, vis_info, 0, True))) {
+ error("%s: Failed to create GLX context", __func__);
+ XFree(vis_info);
+ XCloseDisplay(dpy);
+ return false;
+ }
+
+ XSetWindowAttributes xattr;
+ xattr.background_pixel = xattr.border_pixel = BlackPixel(dpy, screen);
+ xattr.colormap = XCreateColormap(dpy, root_win, vis_info->visual, AllocNone);
+
+ if(gparams->fullscreen) {
+ // TODO: also test for "XFree86-VidModeExtension"
+#ifdef USE_XF86VIDMODE
+ info("Using XF86VidMode extension for fullscreen resolution switch.");
+
+ XF86VidModeModeInfo **modes;
+ XF86VidModeModeInfo *vid_mode = 0;
+ int mode_count;
+
+ XF86VidModeGetAllModeLines(dpy, screen, &mode_count, &modes);
+ orig_mode = *modes[0];
+
+ for(int i=0; i<mode_count; i++) {
+ if(modes[i]->hdisplay == gparams->x && modes[i]->vdisplay == gparams->y) {
+ vid_mode = modes[i];
+ }
+ }
+ if(!vid_mode) {
+ error("Could not set requested video mode");
+ XFree(modes);
+ XFree(vis_info);
+ XCloseDisplay(dpy);
+ return -1;
+ }
+
+ XF86VidModeSwitchToMode(dpy, screen, vid_mode);
+ XF86VidModeSetViewPort(dpy, screen, 0, 0);
+ XFree(modes);
+
+ xattr.override_redirect = True;
+ win = XCreateWindow(dpy, root_win, 0, 0, gparams->x, gparams->y, 0, vis_info->depth,
+ InputOutput, vis_info->visual, CWColormap | CWBackPixel | CWBorderPixel | CWOverrideRedirect, &xattr);
+
+ XWarpPointer(dpy, None, win, 0, 0, 0, 0, 0, 0);
+ XMapRaised(dpy, win);
+ XGrabKeyboard(dpy, win, True, GrabModeAsync, GrabModeAsync, CurrentTime);
+ XGrabPointer(dpy, win, True, ButtonPressMask, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
+#else
+ info("Resolution switching is not compiled or not supported by the X server, using a full-screen window.");
+
+ XWindowAttributes root_attr;
+ XGetWindowAttributes(dpy, root_win, &root_attr);
+
+ gparams->x = root_attr.width;
+ gparams->y = root_attr.height;
+ xattr.override_redirect = True;
+ win = XCreateWindow(dpy, root_win, 0, 0, gparams->x, gparams->y, 0, vis_info->depth,
+ InputOutput, vis_info->visual, CWColormap | CWBackPixel | CWBorderPixel | CWOverrideRedirect, &xattr);
+
+ XWarpPointer(dpy, None, win, 0, 0, 0, 0, 0, 0);
+ XMapRaised(dpy, win);
+ XGrabKeyboard(dpy, win, True, GrabModeAsync, GrabModeAsync, CurrentTime);
+ XGrabPointer(dpy, win, True, ButtonPressMask, GrabModeAsync, GrabModeAsync, win, None, CurrentTime);
+#endif // USE_XF86VIDMODE
+
+ fullscreen = true;
+ } else {
+ win = XCreateWindow(dpy, root_win, 0, 0, gparams->x, gparams->y, 0, vis_info->depth,
+ InputOutput, vis_info->visual, CWColormap | CWBackPixel | CWBorderPixel, &xattr);
+ }
+
+ long events = ExposureMask | StructureNotifyMask | KeyPressMask; // expose and key events
+ events |= ButtonPressMask | ButtonReleaseMask | PointerMotionMask; // mouse events
+ XSelectInput(dpy, win, events);
+
+ // set WM cooperation settings
+ Atom wm_delete = XInternAtom(dpy, "WM_DELETE_WINDOW", True);
+ XSetWMProtocols(dpy, win, &wm_delete, 1);
+
+ XTextProperty tp_wname;
+ static char *win_title = "3dengfx/X";
+ XStringListToTextProperty(&win_title, 1, &tp_wname);
+ XSetWMName(dpy, win, &tp_wname);
+ XFree(tp_wname.value);
+
+ XClassHint class_hint;
+ class_hint.res_name = "3dengfx";
+ class_hint.res_class = "3dengfx_graphics";
+ XSetClassHint(dpy, win, &class_hint);
+
+ XFree(vis_info);
+
+ if(glXMakeCurrent(dpy, win, glx_ctx) == False) {
+ error("%s: Failed to make the GLX context current", __func__);
+ glXDestroyContext(dpy, glx_ctx);
+ XDestroyWindow(dpy, win);
+ XCloseDisplay(dpy);
+ return false;
+ }
+
+ if(!glXIsDirect(dpy, glx_ctx)) {
+ warning("using indirect rendering, which might be slow...");
+ }
+
+ XMapWindow(dpy, win);
+ XFlush(dpy);
+
+ fxwt_x_dpy = dpy;
+ fxwt_x_win = win;
+
+ return true;
+}
+
+void fxwt::destroy_graphics() {
+ info("Shutting down GLX");
+ glXDestroyContext(fxwt_x_dpy, glx_ctx);
+ XDestroyWindow(fxwt_x_dpy, fxwt_x_win);
+
+#ifdef USE_XF86VIDMODE
+ if(fullscreen) {
+ XF86VidModeSwitchToMode(fxwt_x_dpy, DefaultScreen(fxwt_x_dpy), &orig_mode);
+ XF86VidModeSetViewPort(fxwt_x_dpy, DefaultScreen(fxwt_x_dpy), 0, 0);
+ }
+#endif // USE_XF86VIDMODE
+
+ XCloseDisplay(fxwt_x_dpy);
+}
+
+#ifndef GLX_ARB_get_proc_address
+#include <dlfcn.h>
+
+void *glXGetProcAddress(const char *name) {
+ char *err_str;
+ void *sym;
+ void *so = dlopen("libGL.so", RTLD_LAZY);
+ if(!so) {
+ perror("dlopen failed");
+ return 0;
+ }
+
+ dlerror();
+ sym = dlsym(so, name);
+ if((err_str = dlerror())) {
+ fprintf(stderr, "dlsym failed: %s\n", err_str);
+ sym = 0;
+ }
+
+ dlclose(so);
+ return sym;
+}
+#endif
+
+#endif // GFX_LIBRARY == NATIVE && NATIVE_LIB == NATIVE_X11
projects / summerhack / blobdiff