#define _GNU_SOURCE 1

#include <string.h>

#include <X11/X.h>

#include <GL/gl.h>

#include <dlfcn.h>

#include "test_utils.h"

#define NUM_VERTEX3FV_CALLS 100

int main(int argc, char **argv)

{

    struct window_info wi;

    Display *dpy = XOpenDisplay(NULL);

    int sawVertex3fv1, *pSawVertex3fv;

    int i;

    int ret = 1;

    GLXContext ctx = None;

    void *vendorHandle;

    if (!dpy) {

        printError("No display!\n");

        goto fail;

    }

    memset(&wi, 0, sizeof(wi));

    if (!testUtilsCreateWindow(dpy, &wi, 0)) {

        printError("Failed to create window!\n");

        goto fail;

    }

    ctx = glXCreateContext(dpy, wi.visinfo, NULL, GL_TRUE);

    if (!ctx) {

        printError("Failed to create a context!\n");

        goto fail;

    }

    if (!glXMakeContextCurrent(dpy, wi.win, wi.win, ctx)) {

        printError("Failed to make current\n");

        goto fail;

    }

    vendorHandle = dlopen("libGLX_dummy.so", RTLD_LAZY);

    if (!vendorHandle) {

        printError("No valid vendor library handle\n");

        goto fail;

    }

    pSawVertex3fv = (int *)dlsym(vendorHandle, "__glXSawVertex3fv");

    if (!pSawVertex3fv) {

        printError("Could not find __glXSawVertex3fv\n");

        goto fail;

    }

    for (i = 0; i < NUM_VERTEX3FV_CALLS; i++) {

        glVertex3fv(NULL);

    }

    // Read the resulting value

    sawVertex3fv1 = *pSawVertex3fv;

    if (!glXMakeContextCurrent(dpy, None, None, NULL)) {

        printError("Could not lose current\n");

        goto fail;

    }

    dlclose(vendorHandle);

    pSawVertex3fv = NULL;

    if (sawVertex3fv1 != NUM_VERTEX3FV_CALLS) {

        printError("sawVertex3fv1 mismatch: expected %d, got %d\n",

                   NUM_VERTEX3FV_CALLS, sawVertex3fv1);

        goto fail;

    }

    ret = 0;

fail:

    if (ctx) {

        glXDestroyContext(dpy, ctx);

    }

    testUtilsDestroyWindow(dpy, &wi;;

    return ret;

}