tests/spec/arb_es2_compatibility/arb_es2_compatibility-depthrangef.c

   1 /*
   2  * Copyright © 2009-2010 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
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 /** @file arb_es2_compatibility-depthrangef.c
  25  *
  26  * Tests that ARB_ES2_compatibility adds glDepthRangef (as opposed to
  27  * glDepthRange) and that it works.  Based on general/depth-clamp-range.c.
  28  */
  29
  30 #include "piglit-util-gl.h"
  31
  32 PIGLIT_GL_TEST_CONFIG_BEGIN
  33
  34         config.supports_gl_compat_version = 10;
  35
  36         config.window_width = 150;
  37         config.window_height = 150;
  38         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_DEPTH;
  39
  40 PIGLIT_GL_TEST_CONFIG_END
  41
  42 void
  43 piglit_init(int argc, char **argv)
  44 {
  45         piglit_require_extension("GL_ARB_ES2_compatibility");
  46 }
  47
  48 enum piglit_result
  49 piglit_display(void)
  50 {
  51         GLboolean pass = GL_TRUE;
  52         float red[4] =   {1.0, 0.0, 0.0, 0.0};
  53         float green[4] = {0.0, 1.0, 0.0, 0.0};
  54         float blue[4] =  {0.0, 0.0, 1.0, 0.0};
  55
  56         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
  57
  58         glClearColor(0.0, 0.0, 1.0, 0.0);
  59
  60         glClearDepthf(0.5);
  61         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  62         glEnable(GL_DEPTH_TEST);
  63         glDepthFunc(GL_LEQUAL);
  64
  65         /* Keep in mind that the ortho projection flips near and far's signs,
  66          * so 1.0 to quad()'s z maps to glDepthRange's near, and -1.0 maps to
  67          * glDepthRange's far.
  68          */
  69
  70         glColor4fv(green);
  71         glDepthRangef(0, 1);
  72         piglit_draw_rect_z(0.5,
  73                            0, 0,
  74                            piglit_width / 2, piglit_height);
  75
  76         glColor4fv(red);
  77         glDepthRangef(1, 0);
  78         piglit_draw_rect_z(0.5,
  79                            piglit_width / 2, 0,
  80                            piglit_width, piglit_height);
  81
  82         pass = piglit_probe_pixel_rgb(piglit_width * 1 / 4, piglit_height / 2,
  83                                       green) && pass;
  84         pass = piglit_probe_pixel_rgb(piglit_width * 3 / 4, piglit_height / 2,
  85                                       blue) && pass;
  86
  87         piglit_present_results();
  88
  89         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
  90 }