tests/wgl/wgl-multi-context-single-window.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 one window with multiple contexts.
  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
  38 #define MAX_CONTEXTS 8
  39
  40 static HGLRC ctx[MAX_CONTEXTS];
  41 static int num_contexts = MAX_CONTEXTS;
  42 static HWND win;
  43
  44 static const float colors[MAX_CONTEXTS][4] = {
  45         {1, 0, 0, 1},
  46         {0, 1, 0, 1},
  47         {0, 0, 1, 1},
  48         {0, 1, 1, 1},
  49         {1, 0, 1, 1},
  50         {1, 1, 0, 1},
  51         {1, 1, 1, 1},
  52         {.5, .5, .5, 1},
  53 };
  54
  55
  56 static int rect_size = 40;
  57
  58
  59 static int
  60 rect_pos(int i)
  61 {
  62         return i * rect_size / 2;
  63 }
  64
  65
  66 enum piglit_result
  67 draw(void)
  68 {
  69         int i;
  70         bool pass = true;
  71
  72         /* draw a series of colored quads, one per context, at increasing
  73          * Z distance.
  74          */
  75         for (i = 0; i < num_contexts; i++) {
  76                 if (!wglMakeCurrent(GetDC(win), ctx[i])) {
  77                         fprintf(stderr, "wglMakeCurrent failed\n");
  78                         return PIGLIT_FAIL;
  79                 }
  80
  81                 if (i == 0) {
  82                         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  83                 }
  84
  85                 glEnable(GL_DEPTH_TEST);
  86                 glMatrixMode(GL_PROJECTION);
  87                 glLoadIdentity();
  88                 glOrtho(0, piglit_width, 0, piglit_height, 0, 1);
  89
  90                 glMatrixMode(GL_MODELVIEW);
  91                 glLoadIdentity();
  92
  93                 glPushMatrix();
  94                 float p = rect_pos(i);
  95                 float z = -i / 10.0;
  96                 glTranslatef(p, p, z);
  97
  98                 glColor4fv(colors[i]);
  99                 piglit_draw_rect(0, 0, rect_size, rect_size);
 100
 101                 glPopMatrix();
 102         }
 103
 104         /* probe rendering */
 105         wglMakeCurrent(GetDC(win), ctx[0]);
 106         for (i = 0; i < num_contexts; i++) {
 107                 int x = rect_pos(i) + rect_size * 3 / 4;
 108                 int p = piglit_probe_pixel_rgb(x, x, colors[i]);
 109
 110                 if (!p) {
 111                         printf("Failed probe for rect/context %d\n", i);
 112                         pass = false;
 113                 }
 114         }
 115
 116         SwapBuffers(GetDC(win));
 117
 118         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 119 }
 120
 121
 122 int
 123 main(int argc, char **argv)
 124 {
 125         int i;
 126
 127         piglit_width = 500;
 128         piglit_height = 500;
 129
 130         for (i = 1; i < argc; i++) {
 131                 if (strcmp(argv[i], "-auto") == 0) {
 132                         piglit_automatic = 1;
 133                         break;
 134                 }
 135         }
 136
 137         win = piglit_get_wgl_window();
 138         assert(win);
 139
 140         for (i = 0; i < num_contexts; i++) {
 141                 ctx[i] = piglit_get_wgl_context(win);
 142                 assert(ctx[i]);
 143         }
 144
 145         if (!wglMakeCurrent(GetDC(win), ctx[0])) {
 146                 fprintf(stderr, "wglMakeCurrent failed\n");
 147                 return 0;
 148         }
 149
 150         piglit_dispatch_default_init(PIGLIT_DISPATCH_GL);
 151
 152         piglit_wgl_event_loop(draw);
 153
 154         return 0;
 155 }