initial check-in

1 files changed, 437 insertions, 0 deletions

diff --git a/progs/tests/sharedtex.c b/progs/tests/sharedtex.c
new file mode 100644
index 00000000000..e58ac57b9e7
--- /dev/null
+++ b/progs/tests/sharedtex.c
@@ -0,0 +1,437 @@
+/* $Id: sharedtex.c,v 1.1 2000/09/01 21:01:18 brianp Exp $ */
+
+/*
+ * Test sharing of display lists and texture objects between GLX contests.
+ * Brian Paul
+ * Summer 2000
+ *
+ *
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+
+struct window {
+   char DisplayName[1000];
+   Display *Dpy;
+   Window Win;
+   GLXContext Context;
+   float Angle;
+   int Id;
+};
+
+
+#define MAX_WINDOWS 20
+static struct window Windows[MAX_WINDOWS];
+static int NumWindows = 0;
+
+
+static GLuint Textures[3];
+static GLuint CubeList;
+
+
+
+static void
+Error(const char *display, const char *msg)
+{
+   fprintf(stderr, "Error on display %s - %s\n", display, msg);
+   exit(1);
+}
+
+
+static struct window *
+AddWindow(const char *displayName, int xpos, int ypos,
+          const struct window *shareWindow)
+{
+   Display *dpy;
+   Window win;
+   GLXContext ctx;
+   int attrib[] = { GLX_RGBA,
+		    GLX_RED_SIZE, 1,
+		    GLX_GREEN_SIZE, 1,
+		    GLX_BLUE_SIZE, 1,
+		    GLX_DOUBLEBUFFER,
+                    GLX_DEPTH_SIZE, 1,
+		    None };
+   int scrnum;
+   XSetWindowAttributes attr;
+   unsigned long mask;
+   Window root;
+   XVisualInfo *visinfo;
+   int width = 300, height = 300;
+
+   if (NumWindows >= MAX_WINDOWS)
+      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 */
+   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, displayName, displayName,
+                              None, (char **)NULL, 0, &sizehints);
+   }
+
+
+   ctx = glXCreateContext(dpy, visinfo,
+                          shareWindow ? shareWindow->Context : NULL,
+                          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;
+   }
+
+   /* save the info for this window */
+   {
+      static int id = 0;
+      struct window *h = &Windows[NumWindows];
+      strcpy(h->DisplayName, displayName);
+      h->Dpy = dpy;
+      h->Win = win;
+      h->Context = ctx;
+      h->Angle = 0.0;
+      h->Id = id++;
+      NumWindows++;
+      return &Windows[NumWindows-1];
+   }
+
+}
+
+
+static void
+InitGLstuff(struct window *h)
+{
+   if (!glXMakeCurrent(h->Dpy, h->Win, h->Context)) {
+      Error(h->DisplayName, "glXMakeCurrent failed in InitGLstuff");
+      return;
+   }
+
+   glGenTextures(3, Textures);
+
+   /* setup first texture object */
+   {
+      GLubyte image[16][16][4];
+      GLint i, j;
+      glBindTexture(GL_TEXTURE_2D, Textures[0]);
+
+      /* red/white checkerboard */
+      for (i = 0; i < 16; i++) {
+         for (j = 0; j < 16; j++) {
+            if ((i ^ j) & 1) {
+               image[i][j][0] = 255;
+               image[i][j][1] = 255;
+               image[i][j][2] = 255;
+               image[i][j][3] = 255;
+            }
+            else {
+               image[i][j][0] = 255;
+               image[i][j][1] = 0;
+               image[i][j][2] = 0;
+               image[i][j][3] = 255;
+            }
+         }
+      }
+
+      glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 16, 16, 0, GL_RGBA,
+                   GL_UNSIGNED_BYTE, image);
+      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+   }
+
+   /* setup second texture object */
+   {
+      GLubyte image[8][8][3];
+      GLint i, j;
+      glBindTexture(GL_TEXTURE_2D, Textures[1]);
+
+      /* green/yellow checkerboard */
+      for (i = 0; i < 8; i++) {
+         for (j = 0; j < 8; j++) {
+            if ((i ^ j) & 1) {
+               image[i][j][0] = 0;
+               image[i][j][1] = 255;
+               image[i][j][2] = 0;
+            }
+            else {
+               image[i][j][0] = 255;
+               image[i][j][1] = 255;
+               image[i][j][2] = 0;
+            }
+         }
+      }
+
+      glPixelStorei(GL_UNPACK_ALIGNMENT, 2);
+      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 8, 8, 0, GL_RGB,
+                   GL_UNSIGNED_BYTE, image);
+      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+   }
+
+   /* setup second texture object */
+   {
+      GLubyte image[4][4][3];
+      GLint i, j;
+      glBindTexture(GL_TEXTURE_2D, Textures[2]);
+
+      /* blue/gray checkerboard */
+      for (i = 0; i < 4; i++) {
+         for (j = 0; j < 4; j++) {
+            if ((i ^ j) & 1) {
+               image[i][j][0] = 0;
+               image[i][j][1] = 0;
+               image[i][j][2] = 255;
+            }
+            else {
+               image[i][j][0] = 200;
+               image[i][j][1] = 200;
+               image[i][j][2] = 200;
+            }
+         }
+      }
+
+      glPixelStorei(GL_UNPACK_ALIGNMENT, 2);
+      glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 4, 4, 0, GL_RGB,
+                   GL_UNSIGNED_BYTE, image);
+      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+      glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+   }
+
+   /* Now make the cube object display list */
+   CubeList = glGenLists(1);
+   glNewList(CubeList, GL_COMPILE);
+   {
+      glBindTexture(GL_TEXTURE_2D, Textures[0]);
+      glBegin(GL_POLYGON);
+      glTexCoord2f(0, 0);  glVertex3f(-1, -1, -1);
+      glTexCoord2f(1, 0);  glVertex3f(-1,  1, -1);
+      glTexCoord2f(1, 1);  glVertex3f(-1,  1,  1);
+      glTexCoord2f(0, 1);  glVertex3f(-1, -1,  1);
+      glEnd();
+      glBegin(GL_POLYGON);
+      glTexCoord2f(0, 0);  glVertex3f(1, -1, -1);
+      glTexCoord2f(1, 0);  glVertex3f(1,  1, -1);
+      glTexCoord2f(1, 1);  glVertex3f(1,  1,  1);
+      glTexCoord2f(0, 1);  glVertex3f(1, -1,  1);
+      glEnd();
+
+      glBindTexture(GL_TEXTURE_2D, Textures[1]);
+      glBegin(GL_POLYGON);
+      glTexCoord2f(0, 0);  glVertex3f(-1, -1, -1);
+      glTexCoord2f(1, 0);  glVertex3f( 1, -1, -1);
+      glTexCoord2f(1, 1);  glVertex3f( 1, -1,  1);
+      glTexCoord2f(0, 1);  glVertex3f(-1, -1,  1);
+      glEnd();
+      glBegin(GL_POLYGON);
+      glTexCoord2f(0, 0);  glVertex3f(-1, 1, -1);
+      glTexCoord2f(1, 0);  glVertex3f( 1, 1, -1);
+      glTexCoord2f(1, 1);  glVertex3f( 1, 1,  1);
+      glTexCoord2f(0, 1);  glVertex3f(-1, 1,  1);
+      glEnd();
+
+      glBindTexture(GL_TEXTURE_2D, Textures[2]);
+      glBegin(GL_POLYGON);
+      glTexCoord2f(0, 0);  glVertex3f(-1, -1, -1);
+      glTexCoord2f(1, 0);  glVertex3f( 1, -1, -1);
+      glTexCoord2f(1, 1);  glVertex3f( 1,  1, -1);
+      glTexCoord2f(0, 1);  glVertex3f(-1,  1, -1);
+      glEnd();
+      glBegin(GL_POLYGON);
+      glTexCoord2f(0, 0);  glVertex3f(-1, -1, 1);
+      glTexCoord2f(1, 0);  glVertex3f( 1, -1, 1);
+      glTexCoord2f(1, 1);  glVertex3f( 1,  1, 1);
+      glTexCoord2f(0, 1);  glVertex3f(-1,  1, 1);
+      glEnd();
+   }
+   glEndList();
+
+   printf("GL_RENDERER: %s\n", (char *) glGetString(GL_RENDERER));
+   printf("GL_VERSION: %s\n", (char *) glGetString(GL_VERSION));
+   printf("GL_VENDOR: %s\n", (char *) glGetString(GL_VENDOR));
+}
+
+
+
+static void
+Redraw(struct window *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(0.25, 0.25, 0.25, 1.0);
+   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+   glEnable(GL_TEXTURE_2D);
+   glEnable(GL_DEPTH_TEST);
+   glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+   glColor3f(1, 1, 1);
+
+   glPushMatrix();
+      if (h->Id == 0)
+         glRotatef(h->Angle, 0, 1, -1);
+      else if (h->Id == 1)
+         glRotatef(-(h->Angle), 0, 1, -1);
+      else if (h->Id == 2)
+         glRotatef(h->Angle, 0, 1, 1);
+      else if (h->Id == 3)
+         glRotatef(-(h->Angle), 0, 1, 1);
+      glCallList(CubeList);
+   glPopMatrix();
+
+   glXSwapBuffers(h->Dpy, h->Win);
+}
+
+
+
+static void
+Resize(const struct window *h, unsigned int width, unsigned int height)
+{
+   if (!glXMakeCurrent(h->Dpy, h->Win, h->Context)) {
+      Error(h->DisplayName, "glXMakeCurrent failed in Resize()");
+      return;
+   }
+   glViewport(0, 0, width, height);
+   glMatrixMode(GL_PROJECTION);
+   glLoadIdentity();
+   glFrustum(-1, 1, -1, 1, 2, 10);
+   glMatrixMode(GL_MODELVIEW);
+   glLoadIdentity();
+   glTranslatef(0, 0, -3.5);
+}
+
+
+
+static void
+EventLoop(void)
+{
+   while (1) {
+      int i;
+      for (i = 0; i < NumWindows; i++) {
+         struct window *h = &Windows[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);
+                     break;
+                  case ConfigureNotify:
+                     Resize(h, event.xconfigure.width, event.xconfigure.height);
+                     break;
+                  case KeyPress:
+                     return;
+                  default:
+                     /*no-op*/ ;
+               }
+            }
+            else {
+               printf("window mismatch\n");
+            }
+         }
+         Redraw(h);
+      }
+      usleep(1);
+   }
+}
+
+
+
+static void
+PrintInfo(const struct window *h)
+{
+   printf("Name: %s\n", h->DisplayName);
+   printf("  Display:     0x%x\n", h->Dpy);
+   printf("  Window:      0x%x\n", h->Win);
+   printf("  Context:     0x%x\n", h->Context);
+}
+
+
+int
+main(int argc, char *argv[])
+{
+   int i;
+   struct window *h0, *h1, *h2, *h3;
+
+   /* four windows and contexts sharing display lists and texture objects */
+   h0 = AddWindow(":0",  10,  10, NULL);
+   h1 = AddWindow(":0", 330,  10, h0);
+   h2 = AddWindow(":0",  10, 350, h0);
+   h3 = AddWindow(":0", 330, 350, h0);
+
+   InitGLstuff(h0);
+
+   EventLoop();
+   return 0;
+}