tests/glx/glx-multithread-makecurrent-1.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
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   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-1.c
  25  *
  26  * First test of GLX_MESA_multithread_makecurrent: Bind one context into
  27  * multiple threads and make sure that synchronized rendering from both
  28  * threads works correctly.
  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         pthread_mutex_unlock(&mutex);
  64
  65         get_lock_for_step(3);
  66         glColor4f(0.0, 1.0, 0.0, 1.0);
  67         piglit_draw_rect(10, 10, 10, 10);
  68         pthread_mutex_unlock(&mutex);
  69
  70         get_lock_for_step(5);
  71         glXMakeCurrent(dpy, None, None);
  72         pthread_mutex_unlock(&mutex);
  73
  74         return NULL;
  75 }
  76
  77 static void *
  78 thread2_func(void *arg)
  79 {
  80         get_lock_for_step(2);
  81         glXMakeCurrent(dpy, win, ctx);
  82         pthread_mutex_unlock(&mutex);
  83
  84         get_lock_for_step(4);
  85         glColor4f(0.0, 0.0, 1.0, 1.0);
  86         piglit_draw_rect(30, 10, 10, 10);
  87         pthread_mutex_unlock(&mutex);
  88
  89         get_lock_for_step(6);
  90         glXMakeCurrent(dpy, None, None);
  91         pthread_mutex_unlock(&mutex);
  92
  93         return NULL;
  94 }
  95
  96 enum piglit_result
  97 draw(Display *dpy)
  98 {
  99         GLboolean pass = GL_TRUE;
 100         float green[] = {0.0, 1.0, 0.0, 1.0};
 101         float blue[] = {0.0, 0.0, 1.0, 1.0};
 102         float gray[] = {0.5, 0.5, 0.5, 1.0};
 103         pthread_t thread1, thread2;
 104         void *retval;
 105         int ret;
 106         int x1 = 10, x2 = 30;
 107
 108         ctx = piglit_get_glx_context(dpy, visinfo);
 109         glXMakeCurrent(dpy, win, ctx);
 110         piglit_dispatch_default_init(PIGLIT_DISPATCH_GL);
 111
 112         piglit_require_glx_extension(dpy, "GLX_MESA_multithread_makecurrent");
 113
 114         /* Clear background to gray */
 115         glClearColor(0.5, 0.5, 0.5, 1.0);
 116         glClear(GL_COLOR_BUFFER_BIT);
 117
 118         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
 119
 120         pthread_mutex_init(&mutex, NULL);
 121
 122         /* Now, spawn some threads that do some drawing, both with this
 123          * context
 124          */
 125         pthread_create(&thread1, NULL, thread1_func, &x1);
 126         pthread_create(&thread2, NULL, thread2_func, &x2);
 127
 128         ret = pthread_join(thread1, &retval);
 129         assert(ret == 0);
 130         ret = pthread_join(thread2, &retval);
 131         assert(ret == 0);
 132
 133         pthread_mutex_destroy(&mutex);
 134
 135         glColor4f(0.0, 1.0, 0.0, 1.0);
 136         piglit_draw_rect(50, 10, 10, 10);
 137
 138         pass &= piglit_probe_rect_rgba( 0, 10, 10, 10, gray);
 139         pass &= piglit_probe_rect_rgba(10, 10, 10, 10, green);
 140         pass &= piglit_probe_rect_rgba(20, 10, 10, 10, gray);
 141         pass &= piglit_probe_rect_rgba(30, 10, 10, 10, blue);
 142         pass &= piglit_probe_rect_rgba(40, 10, 10, 10, gray);
 143         pass &= piglit_probe_rect_rgba(50, 10, 10, 10, green);
 144         pass &= piglit_probe_rect_rgba(60, 10, 10, 10, gray);
 145
 146         pass &= piglit_probe_rect_rgba(0, 0, piglit_width, 10, gray);
 147         pass &= piglit_probe_rect_rgba(0, 20, piglit_width, 10, gray);
 148
 149         glXSwapBuffers(dpy, win);
 150
 151         glXMakeCurrent(dpy, None, None);
 152         glXDestroyContext(dpy, ctx);
 153
 154         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 155 }
 156
 157 int
 158 main(int argc, char **argv)
 159 {
 160         int i;
 161
 162         for(i = 1; i < argc; ++i) {
 163                 if (!strcmp(argv[i], "-auto"))
 164                         piglit_automatic = 1;
 165                 else
 166                         fprintf(stderr, "Unknown option: %s\n", argv[i]);
 167         }
 168
 169         dpy = XOpenDisplay(NULL);
 170         if (dpy == NULL) {
 171                 fprintf(stderr, "couldn't open display\n");
 172                 piglit_report_result(PIGLIT_FAIL);
 173         }
 174         visinfo = piglit_get_glx_visual(dpy);
 175         win = piglit_get_glx_window(dpy, visinfo);
 176
 177         piglit_glx_event_loop(dpy, draw);
 178
 179         XFree(visinfo);
 180
 181         return 0;
 182 }