diff options
Diffstat (limited to 'nx-X11/extras/Mesa_6.4.2/progs/xdemos/manywin.c')
| -rw-r--r-- | nx-X11/extras/Mesa_6.4.2/progs/xdemos/manywin.c | 393 |
1 files changed, 393 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa_6.4.2/progs/xdemos/manywin.c b/nx-X11/extras/Mesa_6.4.2/progs/xdemos/manywin.c new file mode 100644 index 000000000..c9cca7513 --- /dev/null +++ b/nx-X11/extras/Mesa_6.4.2/progs/xdemos/manywin.c @@ -0,0 +1,393 @@ +/* + * Create N GLX windows/contexts and render to them in round-robin order. + * Also, have the contexts share all texture objects. + * Press 'd' to delete a texture, 'u' to unbind it. + * + * Copyright (C) 2000 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +#include <GL/gl.h> +#include <GL/glx.h> +#include <assert.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <X11/keysym.h> + + +/* + * Each display/window/context: + */ +struct head { + char DisplayName[1000]; + Display *Dpy; + Window Win; + GLXContext Context; + float Angle; + char Renderer[1000]; + char Vendor[1000]; + char Version[1000]; +}; + + +#define MAX_HEADS 200 +static struct head Heads[MAX_HEADS]; +static int NumHeads = 0; +static GLboolean SwapSeparate = GL_TRUE; +static GLuint TexObj = 0; + + +static void +Error(const char *display, const char *msg) +{ + fprintf(stderr, "Error on display %s - %s\n", display, msg); + exit(1); +} + + +static struct head * +AddHead(const char *displayName, const char *name) +{ + Display *dpy; + Window win; + GLXContext ctx; + int attrib[] = { GLX_RGBA, + GLX_RED_SIZE, 1, + GLX_GREEN_SIZE, 1, + GLX_BLUE_SIZE, 1, + GLX_DOUBLEBUFFER, + None }; + int scrnum; + XSetWindowAttributes attr; + unsigned long mask; + Window root; + XVisualInfo *visinfo; + int width = 90, height = 90; + int xpos = 0, ypos = 0; + + if (NumHeads >= MAX_HEADS) + return NULL; + + dpy = XOpenDisplay(displayName); + if (!dpy) { + Error(displayName, "Unable to open display"); + return NULL; + } + + scrnum = DefaultScreen(dpy); + root = RootWindow(dpy, scrnum); + + visinfo = glXChooseVisual(dpy, scrnum, attrib); + if (!visinfo) { + Error(displayName, "Unable to find RGB, double-buffered visual"); + return NULL; + } + + /* window attributes */ + xpos = (NumHeads % 10) * 100; + ypos = (NumHeads / 10) * 100; + printf("%d, %d\n", xpos, ypos); + attr.background_pixel = 0; + attr.border_pixel = 0; + attr.colormap = XCreateColormap(dpy, root, visinfo->visual, AllocNone); + attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask; + mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask; + + win = XCreateWindow(dpy, root, xpos, ypos, width, height, + 0, visinfo->depth, InputOutput, + visinfo->visual, mask, &attr); + if (!win) { + Error(displayName, "Couldn't create window"); + return NULL; + } + + { + XSizeHints sizehints; + sizehints.x = xpos; + sizehints.y = ypos; + sizehints.width = width; + sizehints.height = height; + sizehints.flags = USSize | USPosition; + XSetNormalHints(dpy, win, &sizehints); + XSetStandardProperties(dpy, win, name, name, + None, (char **)NULL, 0, &sizehints); + } + + if (NumHeads == 0) { + ctx = glXCreateContext(dpy, visinfo, NULL, True); + } + else { + /* share textures & dlists with 0th context */ + printf("sharing\n"); + ctx = glXCreateContext(dpy, visinfo, Heads[0].Context, True); + } + if (!ctx) { + Error(displayName, "Couldn't create GLX context"); + return NULL; + } + + XMapWindow(dpy, win); + + if (!glXMakeCurrent(dpy, win, ctx)) { + Error(displayName, "glXMakeCurrent failed"); + printf("glXMakeCurrent failed in Redraw()\n"); + return NULL; + } + + if (NumHeads == 0) { + /* create texture object now */ + static const GLubyte checker[2][2][4] = { + { {255, 255, 255, 255}, { 0, 0, 0, 255} }, + { { 0, 0, 0, 0}, {255, 255, 255, 255} } + }; + glGenTextures(1, &TexObj); + assert(TexObj); + glBindTexture(GL_TEXTURE_2D, TexObj); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 2, 2, 0, GL_RGB, + GL_UNSIGNED_BYTE, checker); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + } + else { + /* bind 0th context's texture in this context too */ + assert(TexObj); + glBindTexture(GL_TEXTURE_2D, TexObj); + } + glEnable(GL_TEXTURE_2D); + + /* save the info for this head */ + { + struct head *h = &Heads[NumHeads]; + strcpy(h->DisplayName, name); + h->Dpy = dpy; + h->Win = win; + h->Context = ctx; + h->Angle = 0.0; + strcpy(h->Version, (char *) glGetString(GL_VERSION)); + strcpy(h->Vendor, (char *) glGetString(GL_VENDOR)); + strcpy(h->Renderer, (char *) glGetString(GL_RENDERER)); + NumHeads++; + return &Heads[NumHeads-1]; + } + +} + + +static void +DestroyHeads(void) +{ + int i; + for (i = 0; i < NumHeads; i++) { + XDestroyWindow(Heads[i].Dpy, Heads[i].Win); + glXDestroyContext(Heads[i].Dpy, Heads[i].Context); + XCloseDisplay(Heads[i].Dpy); + } +} + + +static void +Redraw(struct head *h) +{ + if (!glXMakeCurrent(h->Dpy, h->Win, h->Context)) { + Error(h->DisplayName, "glXMakeCurrent failed"); + printf("glXMakeCurrent failed in Redraw()\n"); + return; + } + + h->Angle += 1.0; + + glShadeModel(GL_FLAT); + glClearColor(0.5, 0.5, 0.5, 1.0); + glClear(GL_COLOR_BUFFER_BIT); + + /* draw green triangle */ + glColor3f(0.0, 1.0, 0.0); + glPushMatrix(); + glRotatef(h->Angle, 0, 0, 1); + glBegin(GL_TRIANGLES); + glTexCoord2f(0.5, 1.0); glVertex2f(0, 0.8); + glTexCoord2f(0.0, 0.0); glVertex2f(-0.8, -0.7); + glTexCoord2f(1.0, 0.0); glVertex2f(0.8, -0.7); + glEnd(); + glPopMatrix(); + + if (!SwapSeparate) + glXSwapBuffers(h->Dpy, h->Win); +} + + +static void +Swap(struct head *h) +{ + glXSwapBuffers(h->Dpy, h->Win); +} + + +static void +Resize(const struct head *h, unsigned int width, unsigned int height) +{ + if (!glXMakeCurrent(h->Dpy, h->Win, h->Context)) { + Error(h->DisplayName, "glXMakeCurrent failed in Resize()"); + return; + } + glFlush(); + glViewport(0, 0, width, height); + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0); +} + + + +static void +EventLoop(void) +{ + while (1) { + int i; + for (i = 0; i < NumHeads; i++) { + struct head *h = &Heads[i]; + while (XPending(h->Dpy) > 0) { + XEvent event; + XNextEvent(h->Dpy, &event); + if (event.xany.window == h->Win) { + switch (event.type) { + case Expose: + Redraw(h); + if (SwapSeparate) + Swap(h); + break; + case ConfigureNotify: + Resize(h, event.xconfigure.width, event.xconfigure.height); + break; + case KeyPress: + { + char buf[100]; + KeySym keySym; + XComposeStatus stat; + XLookupString(&event.xkey, buf, sizeof(buf), &keySym, &stat); + switch (keySym) { + case XK_Escape: + exit(0); + break; + case XK_d: + case XK_D: + printf("Delete Texture in window %d\n", i); + glXMakeCurrent(h->Dpy, h->Win, h->Context); + glDeleteTextures(1, &TexObj); + break; + case XK_u: + case XK_U: + printf("Unbind Texture in window %d\n", i); + glXMakeCurrent(h->Dpy, h->Win, h->Context); + glBindTexture(GL_TEXTURE_2D, 0); + break; + } + } + break; + default: + /*no-op*/ ; + } + } + else { + printf("window mismatch\n"); + } + } + } + + /* redraw all windows */ + for (i = 0; i < NumHeads; i++) { + Redraw(&Heads[i]); + } + /* swapbuffers on all windows, if not already done */ + if (SwapSeparate) { + for (i = 0; i < NumHeads; i++) { + Swap(&Heads[i]); + } + } + usleep(1); + } +} + + + +static void +PrintInfo(const struct head *h) +{ + printf("Name: %s\n", h->DisplayName); + printf(" Display: %p\n", (void *) h->Dpy); + printf(" Window: 0x%x\n", (int) h->Win); + printf(" Context: 0x%lx\n", (long) h->Context); + printf(" GL_VERSION: %s\n", h->Version); + printf(" GL_VENDOR: %s\n", h->Vendor); + printf(" GL_RENDERER: %s\n", h->Renderer); +} + + +int +main(int argc, char *argv[]) +{ + char *dpyName = NULL; + int i; + + if (argc == 1) { + printf("manywin: open N simultaneous glx windows\n"); + printf("Usage:\n"); + printf(" manywin [-s] numWindows\n"); + printf("Options:\n"); + printf(" -s = swap immediately after drawing (see src code)\n"); + printf("Example:\n"); + printf(" manywin 10\n"); + return 0; + } + else { + int n = 3; + for (i = 1; i < argc; i++) { + if (strcmp(argv[i], "-s") == 0) { + SwapSeparate = GL_FALSE; + } + else if (strcmp(argv[i], "-display") == 0 && i < argc) { + dpyName = argv[i+1]; + i++; + } + else { + n = atoi(argv[i]); + } + } + if (n < 1) + n = 1; + + printf("%d windows\n", n); + for (i = 0; i < n; i++) { + char name[100]; + struct head *h; + sprintf(name, "%d", i); + h = AddHead(dpyName, name); + if (h) { + PrintInfo(h); + } + } + } + + EventLoop(); + DestroyHeads(); + return 0; +} |