tests/glx/glx-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 /** @file glx-multi-context-single-window.c
  25  *
  26  * Exercise rendering to a single window with multiple contexts.
  27  */
  28
  29 #include <unistd.h>
  30 #include "piglit-util-gl.h"
  31 #include "piglit-glx-util.h"
  32
  33 #define MAX_CONTEXTS 8
  34
  35 static GLXContext ctx[MAX_CONTEXTS];
  36 static int num_contexts = MAX_CONTEXTS;
  37 static Window win;
  38 static Display *dpy;
  39
  40 static const float colors[MAX_CONTEXTS][4] = {
  41         {1, 0, 0, 1},
  42         {0, 1, 0, 1},
  43         {0, 0, 1, 1},
  44         {0, 1, 1, 1},
  45         {1, 0, 1, 1},
  46         {1, 1, 0, 1},
  47         {1, 1, 1, 1},
  48         {.5, .5, .5, 1},
  49 };
  50
  51 int piglit_width = 500, piglit_height = 500;
  52
  53 static int rect_size = 40;
  54
  55
  56 static int
  57 rect_pos(int i)
  58 {
  59         return i * rect_size / 2;
  60 }
  61
  62
  63 enum piglit_result
  64 draw(Display *dpy)
  65 {
  66         int i;
  67         bool pass = true;
  68
  69         /* draw a series of colored quads, one per context, at increasing
  70          * Z distance.
  71          */
  72         for (i = 0; i < num_contexts; i++) {
  73                 glXMakeCurrent(dpy, win, ctx[i]);
  74
  75                 if (i == 0) {
  76                         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  77                 }
  78
  79                 glEnable(GL_DEPTH_TEST);
  80                 glMatrixMode(GL_PROJECTION);
  81                 glLoadIdentity();
  82                 glOrtho(0, piglit_width, 0, piglit_height, 0, 1);
  83
  84                 glMatrixMode(GL_MODELVIEW);
  85                 glLoadIdentity();
  86
  87                 glPushMatrix();
  88                 float p = rect_pos(i);
  89                 float z = -i / 10.0;
  90                 glTranslatef(p, p, z);
  91
  92                 glColor4fv(colors[i]);
  93                 piglit_draw_rect(0, 0, rect_size, rect_size);
  94
  95                 glPopMatrix();
  96         }
  97
  98         /* probe rendering */
  99         glXMakeCurrent(dpy, win, ctx[0]);
 100         for (i = 0; i < num_contexts; i++) {
 101                 int x = rect_pos(i) + rect_size * 3 / 4;
 102                 int p = piglit_probe_pixel_rgb(x, x, colors[i]);
 103
 104                 if (!p) {
 105                         printf("Failed probe for rect/context %d\n", i);
 106                         pass = false;
 107                 }
 108         }
 109
 110         glXSwapBuffers(dpy, win);
 111
 112         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 113 }
 114
 115
 116 int
 117 main(int argc, char **argv)
 118 {
 119         XVisualInfo *visinfo;
 120         int i;
 121
 122         for (i = 1; i < argc; ++i) {
 123                 if (!strcmp(argv[i], "-auto"))
 124                         piglit_automatic = 1;
 125                 else
 126                         fprintf(stderr, "Unknown option: %s\n", argv[i]);
 127         }
 128
 129         dpy = XOpenDisplay(NULL);
 130         if (dpy == NULL) {
 131                 fprintf(stderr, "couldn't open display\n");
 132                 piglit_report_result(PIGLIT_FAIL);
 133         }
 134         visinfo = piglit_get_glx_visual(dpy);
 135
 136         win = piglit_get_glx_window(dpy, visinfo);
 137
 138         for (i = 0; i < num_contexts; i++) {
 139                 ctx[i] = piglit_get_glx_context(dpy, visinfo);
 140         }
 141
 142         glXMakeCurrent(dpy, win, ctx[0]);
 143         piglit_dispatch_default_init(PIGLIT_DISPATCH_GL);
 144
 145         piglit_glx_event_loop(dpy, draw);
 146
 147         XFree(visinfo);
 148         glXDestroyWindow(dpy, win);
 149         for (i = 0; i < num_contexts; i++) {
 150                 glXDestroyContext(dpy, ctx[i]);
 151         }
 152
 153         return 0;
 154 }