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/*
* Copyright © 2009-2011 Intel Corporation
*
* 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 (including the next
* paragraph) 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
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*/
/** @file glx-multithread-makecurrent-4.c
*
* Test of issue #3 of GLX_MESA_multithread_makecurrent: Bind one
* context into multiple threads, do rendering from both, then destroy
* the context in one and keep using it to render from the other.
*/
#include <unistd.h>
#include "piglit-util-gl.h"
#include "piglit-glx-util.h"
#include "pthread.h"
int piglit_width = 70, piglit_height = 30;
static Display *dpy;
static Window win;
static GLXContext ctx;
static pthread_mutex_t mutex;
static XVisualInfo *visinfo;
static int current_step = 1;
static void
get_lock_for_step(int step)
{
while (true) {
pthread_mutex_lock(&mutex);
if (step == current_step) {
current_step++;
return;
}
pthread_mutex_unlock(&mutex);
usleep(1);
}
}
static void *
thread1_func(void *arg)
{
get_lock_for_step(1);
glXMakeCurrent(dpy, win, ctx);
glColor4f(0.0, 1.0, 0.0, 1.0);
piglit_draw_rect(10, 10, 10, 10);
pthread_mutex_unlock(&mutex);
get_lock_for_step(3);
glXMakeCurrent(dpy, None, None);
glXDestroyContext(dpy, ctx);
pthread_mutex_unlock(&mutex);
return NULL;
}
static void *
thread2_func(void *arg)
{
get_lock_for_step(2);
glXMakeCurrent(dpy, win, ctx);
glColor4f(0.0, 1.0, 0.0, 1.0);
piglit_draw_rect(30, 10, 10, 10);
pthread_mutex_unlock(&mutex);
get_lock_for_step(4);
piglit_draw_rect(50, 10, 10, 10);
pthread_mutex_unlock(&mutex);
return NULL;
}
enum piglit_result
draw(Display *dpy)
{
GLboolean pass = GL_TRUE;
float green[] = {0.0, 1.0, 0.0, 1.0};
float gray[] = {0.5, 0.5, 0.5, 1.0};
pthread_t thread1, thread2;
void *retval;
int ret;
ctx = piglit_get_glx_context(dpy, visinfo);
glXMakeCurrent(dpy, win, ctx);
piglit_dispatch_default_init(PIGLIT_DISPATCH_GL);
piglit_require_glx_extension(dpy, "GLX_MESA_multithread_makecurrent");
/* Clear background to gray */
glClearColor(0.5, 0.5, 0.5, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
pthread_mutex_init(&mutex, NULL);
glFlush();
/* Now, spawn some threads that do some drawing, both with this
* context
*/
pthread_create(&thread1, NULL, thread1_func, NULL);
pthread_create(&thread2, NULL, thread2_func, NULL);
ret = pthread_join(thread1, &retval);
assert(ret == 0);
ret = pthread_join(thread2, &retval);
assert(ret == 0);
pthread_mutex_destroy(&mutex);
glFlush();
pass &= piglit_probe_rect_rgba( 0, 10, 10, 10, gray);
pass &= piglit_probe_rect_rgba(10, 10, 10, 10, green);
pass &= piglit_probe_rect_rgba(20, 10, 10, 10, gray);
pass &= piglit_probe_rect_rgba(30, 10, 10, 10, green);
pass &= piglit_probe_rect_rgba(40, 10, 10, 10, gray);
pass &= piglit_probe_rect_rgba(50, 10, 10, 10, green);
pass &= piglit_probe_rect_rgba(60, 10, 10, 10, gray);
pass &= piglit_probe_rect_rgba(0, 0, piglit_width, 10, gray);
pass &= piglit_probe_rect_rgba(0, 20, piglit_width, 10, gray);
glXSwapBuffers(dpy, win);
glXMakeCurrent(dpy, None, None);
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
int
main(int argc, char **argv)
{
int i;
for(i = 1; i < argc; ++i) {
if (!strcmp(argv[i], "-auto"))
piglit_automatic = 1;
else
fprintf(stderr, "Unknown option: %s\n", argv[i]);
}
dpy = XOpenDisplay(NULL);
if (dpy == NULL) {
fprintf(stderr, "couldn't open display\n");
piglit_report_result(PIGLIT_FAIL);
}
visinfo = piglit_get_glx_visual(dpy);
win = piglit_get_glx_window(dpy, visinfo);
XMapWindow(dpy, win);
piglit_glx_event_loop(dpy, draw);
XFree(visinfo);
return 0;
}
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