tests/wgl/wgl-multi-window-single-context.c

   1 /*
   2  * Copyright © 2017 VMware, Inc.
   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 /*
  25  * Test rendering into multiple windows with one context.
  26  *
  27  * Authors:
  28  *    Brian Paul
  29  */
  30
  31 #include <assert.h>
  32 #include <stdio.h>
  33 #include "piglit-util-gl.h"
  34 #include "piglit-wgl-util.h"
  35
  36
  37 #define MAX_WINDOWS 8
  38
  39 static HWND win[MAX_WINDOWS];
  40 static int num_windows = MAX_WINDOWS;
  41 static HGLRC ctx;
  42
  43 static const float colors[MAX_WINDOWS][4] = {
  44         {1, 0, 0, 1},
  45         {0, 1, 0, 1},
  46         {0, 0, 1, 1},
  47         {0, 1, 1, 1},
  48         {1, 0, 1, 1},
  49         {1, 1, 0, 1},
  50         {1, 1, 1, 1},
  51         {.5, .5, .5, 1},
  52 };
  53
  54
  55 enum piglit_result
  56 draw(void)
  57 {
  58         int i;
  59         bool pass = true;
  60
  61         /* draw colored quad in each window */
  62         for (i = 0; i < num_windows; i++) {
  63                 wglMakeCurrent(GetDC(win[i]), ctx);
  64
  65                 glClear(GL_COLOR_BUFFER_BIT);
  66                 glColor4fv(colors[i]);
  67                 piglit_draw_rect(-1, -1, 2, 2);
  68         }
  69
  70         /* probe windows */
  71         for (i = 0; i < num_windows; i++) {
  72                 wglMakeCurrent(GetDC(win[i]), ctx);
  73
  74                 glReadBuffer(GL_BACK);
  75                 /* only read back 20x20 region instead of
  76                  * piglit_width x piglit_height since Windows may
  77                  * resize our windows.
  78                  */
  79                 int p = piglit_probe_rect_rgb(0, 0, 20, 20,
  80                                               colors[i]);
  81
  82                 SwapBuffers(GetDC(win[i]));
  83
  84                 if (!p) {
  85                         printf("Failed probe in window %d\n", i);
  86                         pass = false;
  87                 }
  88         }
  89
  90         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
  91 }
  92
  93
  94 int
  95 main(int argc, char **argv)
  96 {
  97         int i;
  98
  99         piglit_width = 100;
 100         piglit_height = 100;
 101
 102         for (i = 1; i < argc; i++) {
 103                 if (strcmp(argv[i], "-auto") == 0) {
 104                         piglit_automatic = 1;
 105                         break;
 106                 }
 107         }
 108
 109         /* Create windows */
 110         for (i = 0; i < num_windows; i++) {
 111                 win[i] = piglit_get_wgl_window();
 112                 MoveWindow(win[i], i*130, 0,
 113                            piglit_width, piglit_height, FALSE);
 114                 assert(win[i]);
 115         }
 116
 117         ctx = piglit_get_wgl_context(win[0]);
 118         assert(ctx);
 119
 120         if (!wglMakeCurrent(GetDC(win[0]), ctx)) {
 121                 fprintf(stderr, "wglMakeCurrent failed\n");
 122                 return 0;
 123         }
 124
 125         piglit_dispatch_default_init(PIGLIT_DISPATCH_GL);
 126
 127         piglit_wgl_event_loop(draw);
 128
 129         return 0;
 130 }