+++ /dev/null
-
-/* This is a good test for glXSwapBuffers on non-current windows,
- * and the glXCopyContext function. Fixed several Mesa/DRI bugs with
- * this program on 15 June 2002.
- *
- * Joe's comments follow:
- *
- * I have tried some different approaches for being able to
- * draw to multiple windows using one context, or a copied
- * context. Mesa/indirect rendering works to use one context
- * for multiple windows, but crashes with glXCopyContext.
- * DRI is badly broken, at least for ATI.
- *
- * I also noticed that glXMakeCurrent allows a window and context
- * from different visuals to be attached (haven't tested recently).
- *
- * Joe Krahn <jkrahn@nc.rr.com>
- */
-
-#include <GL/glx.h>
-#include <GL/gl.h>
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <math.h>
-
-#ifndef M_PI
-#define M_PI 3.14159
-#endif
-
-#define DEGTOR (M_PI/180.0)
-
-static int AttributeList[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
-
-int main(int argc, char **argv)
-{
- Window win1, win2;
- XVisualInfo *vi;
- XSetWindowAttributes swa;
- Display *dpy;
- GLXContext ctx1, ctx2;
- float angle;
- int test;
-
- if (argc < 2) {
- fprintf(stderr, "This program tests GLX context switching.\n");
- fprintf(stderr, "Usage: jkrahntest <n>\n");
- fprintf(stderr, "Where n is:\n");
- fprintf(stderr, "\t1) Use two contexts and swap only when the context is current (typical case).\n");
- fprintf(stderr, "\t2) Use two contexts and swap at the same time.\n");
- fprintf(stderr, "\t\t Used to crash Mesa & nVidia, and DRI artifacts. Seems OK now.\n");
- fprintf(stderr, "\t3) Use one context, but only swap when a context is current.\n");
- fprintf(stderr, "\t\t Serious artifacts for DRI at least with ATI.\n");
- fprintf(stderr, "\t4) Use one context, swap both windows at the same time, so the left\n");
- fprintf(stderr, "\t\t window has no context at swap time. Severe artifacts for DRI.\n");
- fprintf(stderr, "\t5) Use two contexts, copying one to the other when switching windows.\n");
- fprintf(stderr, "\t\t DRI gives an error, indirect rendering crashes server.\n");
-
- exit(1);
- }
- test = atoi(argv[1]);
-
- /* get a connection */
- dpy = XOpenDisplay(NULL);
-
- /* Get an appropriate visual */
- vi = glXChooseVisual(dpy, DefaultScreen(dpy), AttributeList);
- if (vi == 0) {
- fprintf(stderr, "No matching visuals found.\n");
- exit(-1);
- }
-
- /* Create two GLX contexts, with list sharing */
- ctx1 = glXCreateContext(dpy, vi, 0, True);
- ctx2 = glXCreateContext(dpy, vi, ctx1, True);
-
- /* create a colormap */
- swa.colormap = XCreateColormap(dpy, RootWindow(dpy, vi->screen),
- vi->visual, AllocNone);
- swa.border_pixel = 0;
-
- /* Create two windows */
- win1 = XCreateWindow(dpy, RootWindow(dpy, vi->screen),
- 10, 10, 200, 200,
- 0, vi->depth, InputOutput, vi->visual,
- CWBorderPixel | CWColormap, &swa);
- XStoreName(dpy, win1, "Test [L]");
- XMapWindow(dpy, win1);
- XMoveWindow(dpy, win1, 10, 10); /* Initial requested x,y may not be honored */
- {
- XSizeHints sizehints;
- static const char *name = "window";
- sizehints.x = 10;
- sizehints.y = 10;
- sizehints.width = 200;
- sizehints.height = 200;
- sizehints.flags = USSize | USPosition;
- XSetNormalHints(dpy, win1, &sizehints);
- XSetStandardProperties(dpy, win1, name, name,
- None, (char **)NULL, 0, &sizehints);
- }
-
-
- win2 = XCreateWindow(dpy, RootWindow(dpy, vi->screen),
- 250, 10, 200, 200,
- 0, vi->depth, InputOutput, vi->visual,
- CWBorderPixel | CWColormap, &swa);
- XStoreName(dpy, win1, "Test [R]");
- XMapWindow(dpy, win2);
- XMoveWindow(dpy, win2, 260, 10);
- {
- XSizeHints sizehints;
- static const char *name = "window";
- sizehints.x = 10;
- sizehints.y = 10;
- sizehints.width = 200;
- sizehints.height = 200;
- sizehints.flags = USSize | USPosition;
- XSetNormalHints(dpy, win2, &sizehints);
- XSetStandardProperties(dpy, win2, name, name,
- None, (char **)NULL, 0, &sizehints);
- }
-
-
- /* Now draw some spinning things */
- for (angle = 0; angle < 360*4; angle += 10.0) {
- /* Connect the context to window 1 */
- glXMakeCurrent(dpy, win1, ctx1);
-
- /* Clear and draw in window 1 */
- glDrawBuffer(GL_BACK);
- glClearColor(1, 1, 0, 1);
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
- glColor3f(1, 0, 0);
- glBegin(GL_TRIANGLES);
- glVertex2f(0, 0);
- glVertex2f(cos(angle * DEGTOR), sin(angle * DEGTOR));
- glVertex2f(cos((angle + 20.0) * DEGTOR),
- sin((angle + 20.0) * DEGTOR));
- glEnd();
- glFlush();
-
- if (test == 1 || test == 3 || test == 5)
- glXSwapBuffers(dpy, win1);
-
- if (test == 5)
- glXCopyContext(dpy, ctx1, ctx2, GL_ALL_ATTRIB_BITS);
- /* Connect the context to window 2 */
- if (test == 3 || test == 4) {
- glXMakeCurrent(dpy, win2, ctx1);
- } else {
- glXMakeCurrent(dpy, win2, ctx2);
- }
-
- /* Clear and draw in window 2 */
- glDrawBuffer(GL_BACK);
- glClearColor(0, 0, 1, 1);
- glClear(GL_COLOR_BUFFER_BIT);
- glColor3f(1, 1, 0);
- glBegin(GL_TRIANGLES);
- glVertex2f(0, 0);
- glVertex2f(cos(angle * DEGTOR), sin(angle * DEGTOR));
- glVertex2f(cos((angle + 20.0) * DEGTOR),
- sin((angle + 20.0) * DEGTOR));
- glEnd();
- glFlush();
-
- /* Swap buffers */
- if (test == 2 || test == 4)
- glXSwapBuffers(dpy, win1);
- glXSwapBuffers(dpy, win2);
-
- /* wait a while */
- glXWaitX();
- usleep(20000);
- }
-
- return 0;
-}
projects / mesa.git / blobdiff