tests/general/user-clip.c

   1 /*
   2  * Copyright © 2009 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 /**
  25  * \file user-clip.c
  26  *
  27  * \author Ian Romanick <ian.d.romanick@intel.com>
  28  */
  29
  30 #include "piglit-util.h"
  31 #include "piglit-framework.h"
  32
  33 #define ELEMENTS(x)  (sizeof(x) / sizeof(x[0]))
  34
  35 #define BOX_SIZE   32
  36
  37
  38 int piglit_window_mode = GLUT_DOUBLE;
  39 int piglit_width = 100;
  40 int piglit_height = 100;
  41
  42
  43
  44
  45 static const GLfloat clear_color[4] = { 0.5, 0.5, 0.5, 1.0 };
  46
  47
  48 enum piglit_result
  49 piglit_display(void)
  50 {
  51         static const GLfloat green[4] = { 0.0, 1.0, 0.0, 1.0 };
  52         static const GLfloat red[4] = { 1.0, 0.0, 0.0, 1.0 };
  53         enum piglit_result result = PIGLIT_SUCCESS;
  54
  55         glClear(GL_COLOR_BUFFER_BIT);
  56
  57         glBegin(GL_TRIANGLES);
  58         glColor4fv(green);
  59         glVertex3f(-1.0,  1.0, 0.0);
  60         glColor4fv(red);
  61         glVertex3f( 2.0,  0.0, 1.0);
  62         glColor4fv(green);
  63         glVertex3f(-1.0, -1.0, 0.0);
  64         glEnd();
  65
  66         if (!piglit_probe_pixel_rgb(piglit_width - 2,
  67                                     piglit_height / 2,
  68                                     clear_color)) {
  69                 result = PIGLIT_FAILURE;
  70         }
  71
  72         glutSwapBuffers();
  73         return result;
  74 }
  75
  76
  77 void
  78 piglit_init(int argc, char **argv)
  79 {
  80         GLdouble clip_plane[4] = {
  81                 0.0, 0.0, -1.0, 0.5
  82         };
  83
  84         (void) argc;
  85         (void) argv;
  86
  87         glClearColor(clear_color[0],
  88                      clear_color[1],
  89                      clear_color[2],
  90                      clear_color[3]);
  91
  92         glClipPlane(GL_CLIP_PLANE0, clip_plane);
  93         glEnable(GL_CLIP_PLANE0);
  94 }