tests/glx/glx-swap-exchange.c

   1 /*
   2  * Copyright © 2010 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  * Authors:
  24  *    Eric Anholt <eric@anholt.net>
  25  *
  26  */
  27
  28 /** @file glx-swap-exchange.c
  29  *
  30  * Test that GLX_SWAP_EXCHANGE_OML does in fact cause the back buffer to get
  31  * exchanged on swap.
  32  */
  33
  34 #include "piglit-util.h"
  35 #include "piglit-glx-util.h"
  36
  37 int piglit_width = 50, piglit_height = 50;
  38 static Display *dpy;
  39 static Window win;
  40 static XVisualInfo *visinfo;
  41
  42 enum piglit_result
  43 draw(Display *dpy)
  44 {
  45         GLboolean pass = GL_TRUE;
  46         float green[] = {0.0, 1.0, 0.0, 0.0};
  47         GLXContext ctx;
  48
  49         ctx = piglit_get_glx_context(dpy, visinfo);
  50         glXMakeCurrent(dpy, win, ctx);
  51
  52         /* Clear background to gray */
  53         glClearColor(0.0, 1.0, 0.0, 0.0);
  54         glClear(GL_COLOR_BUFFER_BIT);
  55         glXSwapBuffers(dpy, win);
  56         glClearColor(1.0, 0.0, 0.0, 0.0);
  57         glClear(GL_COLOR_BUFFER_BIT);
  58         glXSwapBuffers(dpy, win);
  59
  60         pass = piglit_probe_pixel_rgba(0, 0, green);
  61
  62         glXSwapBuffers(dpy, win);
  63
  64         return pass ? PIGLIT_SUCCESS : PIGLIT_FAILURE;
  65 }
  66
  67
  68 XVisualInfo *
  69 piglit_get_swap_exchange_visual(Display *dpy)
  70 {
  71         XVisualInfo *visinfo;
  72         int attrib[] = {
  73                 GLX_RGBA,
  74                 GLX_RED_SIZE, 1,
  75                 GLX_GREEN_SIZE, 1,
  76                 GLX_BLUE_SIZE, 1,
  77                 GLX_DOUBLEBUFFER,
  78                 GLX_SWAP_METHOD_OML, GLX_SWAP_EXCHANGE_OML,
  79                 None
  80         };
  81         int screen = DefaultScreen(dpy);
  82
  83         visinfo = glXChooseVisual(dpy, screen, attrib);
  84         if (visinfo == NULL) {
  85                 fprintf(stderr,
  86                         "Couldn't get a GLX_SWAP_EXCHANGE_OML, RGBA, "
  87                         "double-buffered visual\n");
  88                 piglit_report_result(PIGLIT_SKIP);
  89                 exit(1);
  90         }
  91
  92         return visinfo;
  93 }
  94
  95 int
  96 main(int argc, char **argv)
  97 {
  98         int i;
  99         const char *glx_extension_list;
 100
 101         for(i = 1; i < argc; ++i) {
 102                 if (!strcmp(argv[i], "-auto"))
 103                         piglit_automatic = 1;
 104                 else
 105                         fprintf(stderr, "Unknown option: %s\n", argv[i]);
 106         }
 107
 108         dpy = XOpenDisplay(NULL);
 109         if (dpy == NULL) {
 110                 fprintf(stderr, "couldn't open display\n");
 111                 piglit_report_result(PIGLIT_FAILURE);
 112         }
 113
 114         glx_extension_list = glXQueryExtensionsString(dpy, DefaultScreen(dpy));
 115         if (strstr(glx_extension_list, "GLX_OML_swap_method") == NULL) {
 116                 printf("Requires GLX_OML_swap_method\n");
 117                 piglit_report_result(PIGLIT_SKIP);
 118         }
 119
 120         visinfo = piglit_get_swap_exchange_visual(dpy);
 121         win = piglit_get_glx_window(dpy, visinfo);
 122
 123         XMapWindow(dpy, win);
 124
 125         piglit_glx_event_loop(dpy, draw);
 126
 127         return 0;
 128 }