tests/glx/glx-swap-singlebuffer.c

   1 /*
   2  * Copyright © 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-swap-singlebuffer.c
  25  *
  26  * Test that glXSwapbuffer() on a single-buffered FBConfig is a noop.
  27  *
  28  * From the GLX 1.4 specification page 34 (page 40 of the PDF):
  29  *
  30  *     This operation is a no-op if draw was created with a
  31  *     non-double-buffered GLXFBConfig, or if draw is a GLXPixmap.
  32  */
  33
  34 #include "piglit-util-gl.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         bool pass = 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         piglit_dispatch_default_init(PIGLIT_DISPATCH_GL);
  52
  53         /* Clear to green */
  54         glClearColor(0.0, 1.0, 0.0, 0.0);
  55         glClear(GL_COLOR_BUFFER_BIT);
  56
  57         /* Noop */
  58         glXSwapBuffers(dpy, win);
  59
  60         /* We want to actually catch any X error that leaks through as
  61          * a result of glXSwapBuffers() before we go saying "pass" or
  62          * "fail".
  63          */
  64         XSync(dpy, False);
  65
  66         pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height, green);
  67
  68         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
  69 }
  70
  71 XVisualInfo *
  72 get_single_buffer_visual(Display *dpy)
  73 {
  74         XVisualInfo *visinfo;
  75         int attrib[] = {
  76                 GLX_RGBA,
  77                 GLX_RED_SIZE, 1,
  78                 GLX_GREEN_SIZE, 1,
  79                 GLX_BLUE_SIZE, 1,
  80                 GLX_ALPHA_SIZE, 1,
  81                 None
  82         };
  83         int screen = DefaultScreen(dpy);
  84
  85         visinfo = glXChooseVisual(dpy, screen, attrib);
  86         if (visinfo == NULL) {
  87                 fprintf(stderr,
  88                         "Couldn't get a single buffered, RGBA visual\n");
  89                 piglit_report_result(PIGLIT_SKIP);
  90         }
  91
  92         return visinfo;
  93 }
  94
  95 int
  96 main(int argc, char **argv)
  97 {
  98         int i;
  99
 100         for(i = 1; i < argc; ++i) {
 101                 if (!strcmp(argv[i], "-auto"))
 102                         piglit_automatic = 1;
 103                 else
 104                         fprintf(stderr, "Unknown option: %s\n", argv[i]);
 105         }
 106
 107         dpy = XOpenDisplay(NULL);
 108         if (dpy == NULL) {
 109                 fprintf(stderr, "couldn't open display\n");
 110                 piglit_report_result(PIGLIT_FAIL);
 111         }
 112
 113         visinfo = get_single_buffer_visual(dpy);
 114         win = piglit_get_glx_window(dpy, visinfo);
 115
 116         piglit_glx_event_loop(dpy, draw);
 117
 118         return 0;
 119 }