1 files changed, 95 insertions, 0 deletions
diff --git a/src/test-native/glExtensionsListGL2.c b/src/test-native/glExtensionsListGL2.c
new file mode 100644
index 000000000..89815e9c0
--- /dev/null
+++ b/src/test-native/glExtensionsListGL2.c
@@ -0,0 +1,95 @@
+/**
+ * compile with: gcc -o displayMultiple02 displayMultiple02.c -lX11 -lGL
+ */
+
+#include <stdio.h>
+#include <X11/X.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <GL/glx.h>
+#include <GL/gl.h>
+
+static void testExtensions();
+
+int main(int nargs, char **vargs) {
+    testExtensions();
+    return 0;
+}
+
+static void createGLWin(Display *dpy, int width, int height, Window *rWin, GLXContext *rCtx);
+static void useGL(Display *dpy, Window win, GLXContext ctx, int width, int height);
+
+void testExtensions() {
+    int major, minor;
+    Display *disp1;
+    Window win1;
+    GLXContext ctx1;
+
+    disp1 = XOpenDisplay(NULL);
+    createGLWin(disp1, 200, 200, &win1, &ctx1);
+    if(0 != win1 && 0 != ctx1) {
+        useGL(disp1, win1, ctx1, 200, 200);
+
+        glXMakeCurrent(disp1, 0, 0);
+        glXDestroyContext(disp1, ctx1);
+    }
+    XCloseDisplay(disp1);
+}
+
+/* attributes for a double buffered visual in RGBA format with at least
+ * 4 bits per color and a 16 bit depth buffer */
+static int attrListDbl[] = { GLX_RGBA, GLX_DOUBLEBUFFER, 
+    GLX_RED_SIZE, 4, 
+    GLX_GREEN_SIZE, 4, 
+    GLX_BLUE_SIZE, 4, 
+    GLX_DEPTH_SIZE, 16,
+    None };
+
+void createGLWin(Display *dpy, int width, int height, Window *rWin, GLXContext *rCtx)
+{
+    int screen = DefaultScreen(dpy);
+    XVisualInfo *vi = glXChooseVisual(dpy, screen, attrListDbl);
+    Colormap cmap;
+    XSetWindowAttributes attr;
+
+    /* create a GLX context */
+    *rCtx = glXCreateContext(dpy, vi, 0, GL_TRUE);
+    /* create a color map */
+    cmap = XCreateColormap(dpy, RootWindow(dpy, vi->screen), vi->visual, AllocNone);
+    attr.colormap = cmap;
+    attr.border_pixel = 0;
+
+    /* create a window in window mode*/
+    attr.event_mask = ExposureMask | KeyPressMask | ButtonPressMask |
+        StructureNotifyMask;
+    *rWin = XCreateWindow(dpy, RootWindow(dpy, vi->screen),
+        0, 0, width, height, 0, vi->depth, InputOutput, vi->visual,
+        CWBorderPixel | CWColormap | CWEventMask, &attr);
+
+    XMapRaised(dpy, *rWin);
+}
+
+void useGL(Display *dpy, Window win, GLXContext ctx, int width, int height)
+{
+    PFNGLGETSTRINGIPROC glGetStringi = 0;
+    int i, n;
+
+    glXMakeCurrent(dpy, win, ctx);
+
+    fprintf(stderr, "GL_VENDOR: %s\n", glGetString(GL_VENDOR));
+
+    glGetIntegerv(GL_NUM_EXTENSIONS, &n);
+    fprintf(stderr, "GL_NUM_EXTENSIONS: %d\n", n);
+
+    glGetStringi = (PFNGLGETSTRINGIPROC)glXGetProcAddressARB("glGetStringi");
+    if(NULL==glGetStringi) {
+        return;
+    }
+
+    for (i=0; i<n; i++) {
+      const char* extension = (const char*)glGetStringi(GL_EXTENSIONS, i);
+      fprintf(stderr, "GL_EXTENSION %d/%d: %s\n", (i+1), n, extension);
+    }
+
+}
+