tests/glx/glx-multithread-makecurrent-4.c

   1 /*
   2  * Copyright © 2009-2011 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
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   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 /** @file glx-multithread-makecurrent-4.c
  25  *
  26  * Test of issue #3 of GLX_MESA_multithread_makecurrent: Bind one
  27  * context into multiple threads, do rendering from both, then destroy
  28  * the context in one and keep using it to render from the other.
  29  */
  30
  31 #include <unistd.h>
  32 #include "piglit-util-gl.h"
  33 #include "piglit-glx-util.h"
  34 #include "pthread.h"
  35
  36 int piglit_width = 70, piglit_height = 30;
  37 static Display *dpy;
  38 static Window win;
  39 static GLXContext ctx;
  40 static pthread_mutex_t mutex;
  41 static XVisualInfo *visinfo;
  42 static int current_step = 1;
  43
  44 static void
  45 get_lock_for_step(int step)
  46 {
  47         while (true) {
  48                 pthread_mutex_lock(&mutex);
  49                 if (step == current_step) {
  50                         current_step++;
  51                         return;
  52                 }
  53                 pthread_mutex_unlock(&mutex);
  54                 usleep(1);
  55         }
  56 }
  57
  58 static void *
  59 thread1_func(void *arg)
  60 {
  61         get_lock_for_step(1);
  62         glXMakeCurrent(dpy, win, ctx);
  63         glColor4f(0.0, 1.0, 0.0, 1.0);
  64         piglit_draw_rect(10, 10, 10, 10);
  65         pthread_mutex_unlock(&mutex);
  66
  67         get_lock_for_step(3);
  68         glXMakeCurrent(dpy, None, None);
  69         glXDestroyContext(dpy, ctx);
  70         pthread_mutex_unlock(&mutex);
  71
  72         return NULL;
  73 }
  74
  75 static void *
  76 thread2_func(void *arg)
  77 {
  78         get_lock_for_step(2);
  79         glXMakeCurrent(dpy, win, ctx);
  80         glColor4f(0.0, 1.0, 0.0, 1.0);
  81         piglit_draw_rect(30, 10, 10, 10);
  82         pthread_mutex_unlock(&mutex);
  83
  84         get_lock_for_step(4);
  85         piglit_draw_rect(50, 10, 10, 10);
  86         pthread_mutex_unlock(&mutex);
  87
  88         return NULL;
  89 }
  90
  91 enum piglit_result
  92 draw(Display *dpy)
  93 {
  94         GLboolean pass = GL_TRUE;
  95         float green[] = {0.0, 1.0, 0.0, 1.0};
  96         float gray[] = {0.5, 0.5, 0.5, 1.0};
  97         pthread_t thread1, thread2;
  98         void *retval;
  99         int ret;
 100
 101         ctx = piglit_get_glx_context(dpy, visinfo);
 102         glXMakeCurrent(dpy, win, ctx);
 103         piglit_dispatch_default_init(PIGLIT_DISPATCH_GL);
 104
 105         piglit_require_glx_extension(dpy, "GLX_MESA_multithread_makecurrent");
 106
 107         /* Clear background to gray */
 108         glClearColor(0.5, 0.5, 0.5, 1.0);
 109         glClear(GL_COLOR_BUFFER_BIT);
 110
 111         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
 112
 113         pthread_mutex_init(&mutex, NULL);
 114
 115         glFlush();
 116         /* Now, spawn some threads that do some drawing, both with this
 117          * context
 118          */
 119         pthread_create(&thread1, NULL, thread1_func, NULL);
 120         pthread_create(&thread2, NULL, thread2_func, NULL);
 121
 122         ret = pthread_join(thread1, &retval);
 123         assert(ret == 0);
 124         ret = pthread_join(thread2, &retval);
 125         assert(ret == 0);
 126
 127         pthread_mutex_destroy(&mutex);
 128         glFlush();
 129
 130         pass &= piglit_probe_rect_rgba( 0, 10, 10, 10, gray);
 131         pass &= piglit_probe_rect_rgba(10, 10, 10, 10, green);
 132         pass &= piglit_probe_rect_rgba(20, 10, 10, 10, gray);
 133         pass &= piglit_probe_rect_rgba(30, 10, 10, 10, green);
 134         pass &= piglit_probe_rect_rgba(40, 10, 10, 10, gray);
 135         pass &= piglit_probe_rect_rgba(50, 10, 10, 10, green);
 136         pass &= piglit_probe_rect_rgba(60, 10, 10, 10, gray);
 137
 138         pass &= piglit_probe_rect_rgba(0, 0, piglit_width, 10, gray);
 139         pass &= piglit_probe_rect_rgba(0, 20, piglit_width, 10, gray);
 140
 141         glXSwapBuffers(dpy, win);
 142
 143         glXMakeCurrent(dpy, None, None);
 144
 145         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 146 }
 147
 148 int
 149 main(int argc, char **argv)
 150 {
 151         int i;
 152
 153         for(i = 1; i < argc; ++i) {
 154                 if (!strcmp(argv[i], "-auto"))
 155                         piglit_automatic = 1;
 156                 else
 157                         fprintf(stderr, "Unknown option: %s\n", argv[i]);
 158         }
 159
 160         dpy = XOpenDisplay(NULL);
 161         if (dpy == NULL) {
 162                 fprintf(stderr, "couldn't open display\n");
 163                 piglit_report_result(PIGLIT_FAIL);
 164         }
 165         visinfo = piglit_get_glx_visual(dpy);
 166         win = piglit_get_glx_window(dpy, visinfo);
 167
 168         XMapWindow(dpy, win);
 169
 170         piglit_glx_event_loop(dpy, draw);
 171
 172         XFree(visinfo);
 173
 174         return 0;
 175 }