tests/glx/glx-swap-exchange.c

   1 /*
   2  * Copyright © 2010 Intel Corporation
   3  * Copyright © 2017 VMWare Inc.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  22  * IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Eric Anholt <eric@anholt.net>
  26  *    Thomas Hellstrom <thellstrom@vmware.com>
  27  *
  28  */
  29
  30 /** @file glx-swap-exchange.c
  31  *
  32  * Test that GLX_SWAP_EXCHANGE_OML does in fact cause the back buffer to get
  33  * exchanged on swap.
  34  */
  35
  36 #include "piglit-util-gl.h"
  37 #include "piglit-glx-util.h"
  38
  39 int piglit_width = 50, piglit_height = 50;
  40 static Display *dpy;
  41 static GLXFBConfig *config;
  42 static GLXContext ctx;
  43 static GLXWindow gwin;
  44
  45 enum piglit_result
  46 draw(Display *dpy)
  47 {
  48         GLboolean pass = GL_TRUE;
  49         static const float green[] = {0.0, 1.0, 0.0, 0.3};
  50         static const float red[] = {1.0, 0.0, 0.0, 0.5};
  51
  52         glXMakeContextCurrent(dpy, gwin, gwin, ctx);
  53         glClearColor(0.0, 1.0, 0.0, 0.3);
  54         glClear(GL_COLOR_BUFFER_BIT);
  55         glXSwapBuffers(dpy, gwin);
  56         glClearColor(1.0, 0.0, 0.0, 0.5);
  57         glClear(GL_COLOR_BUFFER_BIT);
  58         glXSwapBuffers(dpy, gwin);
  59         glReadBuffer(GL_BACK);
  60         pass = piglit_probe_pixel_rgba(0, 0, green);
  61         if (pass) {
  62                 glReadBuffer(GL_FRONT);
  63                 pass = piglit_probe_pixel_rgba(0, 0, red);
  64         }
  65
  66         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
  67 }
  68
  69
  70 static GLXFBConfig *
  71 piglit_get_swap_exchange_config(Display *dpy)
  72 {
  73         GLXFBConfig *fbc;
  74         int nele;
  75         int attrib[] = {
  76                 GLX_RENDER_TYPE, GLX_RGBA_BIT,
  77                 GLX_RED_SIZE, 8,
  78                 GLX_GREEN_SIZE, 8,
  79                 GLX_BLUE_SIZE, 8,
  80                 GLX_ALPHA_SIZE, 8,
  81                 GLX_SWAP_METHOD_OML, GLX_SWAP_EXCHANGE_OML,
  82                 GLX_DOUBLEBUFFER, True,
  83                 None
  84         };
  85         int screen = DefaultScreen(dpy);
  86
  87         fbc = glXChooseFBConfig(dpy, screen, attrib, &nele);
  88         if (fbc == NULL) {
  89                 fprintf(stderr,
  90                         "Couldn't get a GLX_SWAP_EXCHANGE_OML, RGBA, "
  91                         "double-buffered fbconfig\n");
  92                 piglit_report_result(PIGLIT_SKIP);
  93                 exit(1);
  94         }
  95
  96         return fbc;
  97 }
  98
  99 int
 100 main(int argc, char **argv)
 101 {
 102         int i;
 103         const char *glx_extension_list;
 104         Window win;
 105         XVisualInfo *visinfo;
 106
 107         for (i = 1; i < argc; ++i) {
 108                 if (!strcmp(argv[i], "-auto"))
 109                         piglit_automatic = 1;
 110                 else
 111                         fprintf(stderr, "Unknown option: %s\n", argv[i]);
 112         }
 113
 114         dpy = XOpenDisplay(NULL);
 115         if (dpy == NULL) {
 116                 fprintf(stderr, "couldn't open display\n");
 117                 piglit_report_result(PIGLIT_FAIL);
 118         }
 119
 120         glx_extension_list = glXQueryExtensionsString(dpy, DefaultScreen(dpy));
 121         if (strstr(glx_extension_list, "GLX_OML_swap_method") == NULL) {
 122                 printf("Requires GLX_OML_swap_method\n");
 123                 piglit_report_result(PIGLIT_SKIP);
 124         }
 125
 126         config = piglit_get_swap_exchange_config(dpy);
 127         visinfo = glXGetVisualFromFBConfig(dpy, config[0]);
 128         if (!visinfo) {
 129                 XFree(config);
 130                 printf("Error: couldn't create a visual from fbconfig.\n");
 131                 piglit_report_result(PIGLIT_FAIL);
 132         }
 133
 134         win = piglit_get_glx_window(dpy, visinfo);
 135         XFree(visinfo);
 136
 137         gwin = glXCreateWindow(dpy, config[0], win, NULL);
 138         ctx = glXCreateNewContext(dpy, config[0], GLX_RGBA_TYPE, 0, GL_TRUE);
 139         glXMakeContextCurrent(dpy, gwin, gwin, ctx);
 140         piglit_dispatch_default_init(PIGLIT_DISPATCH_GL);
 141
 142         piglit_glx_event_loop(dpy, draw);
 143
 144         XFree(config);
 145
 146         return 0;
 147 }