tests/spec/gl-2.0/api/clip-flag-behavior.c

   1 /*
   2  * Copyright © 2011 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 clip-flag-behavior.c
  26  *
  27  * This test verifies the following basic behaviors of the GL_CLIP_PLANEi
  28  * flags:
  29  *
  30  * - There are exactly MAX_CLIP_PLANES of them, and trying to access a
  31  *   nonexistent flag produces a GL_INVALID_ENUM error.
  32  *
  33  * - They default to false.
  34  *
  35  * - Their behavior under glGetBooleanv, glIsEnabled, glEnable, and
  36  *   glDisable is consistent.
  37  */
  38
  39 #include "piglit-util-gl.h"
  40
  41 PIGLIT_GL_TEST_CONFIG_BEGIN
  42
  43         config.supports_gl_compat_version = 10;
  44         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
  45         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  46
  47 PIGLIT_GL_TEST_CONFIG_END
  48
  49 enum piglit_result
  50 piglit_display(void)
  51 {
  52         return PIGLIT_FAIL;
  53 }
  54
  55 static char *bool_to_string(bool b)
  56 {
  57         if (b)
  58                 return "true";
  59         else
  60                 return "false";
  61 }
  62
  63 static bool
  64 check_bool(GLboolean b, bool expected)
  65 {
  66         /* Negate the bools before comparing so that distinct nonzero
  67          * values compare equal.
  68          */
  69         if ((!b) == (!expected)) {
  70                 return true;
  71         } else {
  72                 printf("Expected %s, got %s\n", bool_to_string(expected),
  73                        bool_to_string(b));
  74                 return false;
  75         }
  76 }
  77
  78 /**
  79  * Print "OK" and return true.  This is helpful in chaining with the
  80  * functions above, e.g.:
  81  *
  82  * bool pass = piglit_check_gl_error(...) && check_bool(...) && print_ok();
  83  */
  84 static bool
  85 print_ok()
  86 {
  87         printf("OK\n");
  88         return true;
  89 }
  90
  91 static bool
  92 check_enable_state(char *enum_name, GLenum enum_value, bool expected)
  93 {
  94         GLboolean b;
  95
  96         bool pass = true;
  97         printf("Trying glIsEnabled(%s): ", enum_name);
  98         b = glIsEnabled(enum_value);
  99         pass = piglit_check_gl_error(GL_NO_ERROR) && check_bool(b, expected)
 100                 && print_ok() && pass;
 101
 102         printf("Trying glGetBooleanv(%s): ", enum_name);
 103         glGetBooleanv(enum_value, &b);
 104         pass = piglit_check_gl_error(GL_NO_ERROR) && check_bool(b, expected)
 105                 && print_ok() && pass;
 106
 107         return pass;
 108 }
 109
 110 void
 111 piglit_init(int argc, char **argv)
 112 {
 113         GLint max_clip_planes;
 114         bool pass = true;
 115         GLint plane;
 116         GLboolean b;
 117         char enum_name[38];
 118         GLenum enum_value;
 119
 120         printf("Querying GL_MAX_CLIP_PLANES: ");
 121         glGetIntegerv(GL_MAX_CLIP_PLANES, &max_clip_planes);
 122         if (!piglit_check_gl_error(GL_NO_ERROR))
 123                 piglit_report_result(PIGLIT_FAIL);
 124         printf("%d\n", max_clip_planes);
 125         if (max_clip_planes < 0) {
 126                 printf("Error: GL_MAX_CLIP_PLANES must be >= 0\n");
 127                 piglit_report_result(PIGLIT_FAIL);
 128         }
 129
 130         /* Check behavior of GL_CLIP_PLANE0 + i where i < max_clip_planes */
 131         for (plane = 0; plane < max_clip_planes; ++plane) {
 132                 enum_value = GL_CLIP_PLANE0 + plane;
 133                 sprintf(enum_name, "GL_CLIP_PLANE0 + %d", plane);
 134
 135                 pass = check_enable_state(enum_name, enum_value, false) && pass;
 136
 137                 printf("Trying glEnable(%s): ", enum_name);
 138                 glEnable(enum_value);
 139                 pass = piglit_check_gl_error(GL_NO_ERROR) && print_ok() && pass;
 140
 141                 pass = check_enable_state(enum_name, enum_value, true) && pass;
 142
 143                 printf("Trying glDisable(%s): ", enum_name);
 144                 glDisable(enum_value);
 145                 pass = piglit_check_gl_error(GL_NO_ERROR) && print_ok() && pass;
 146
 147                 pass = check_enable_state(enum_name, enum_value, false) && pass;
 148         }
 149
 150         if (!piglit_khr_no_error) {
 151                 /* Check behavior of GL_CLIP_PLANE0 + n where n == max_clip_planes */
 152                 enum_value = GL_CLIP_PLANE0 + max_clip_planes;
 153                 sprintf(enum_name, "GL_CLIP_PLANE0 + %d", max_clip_planes);
 154
 155                 printf("Trying glIsEnabled(%s): ", enum_name);
 156                 b = glIsEnabled(enum_value);
 157                 pass = piglit_check_gl_error(GL_INVALID_ENUM) && print_ok() && pass;
 158
 159                 printf("Trying glGetBooleanv(%s): ", enum_name);
 160                 glGetBooleanv(enum_value, &b);
 161                 pass = piglit_check_gl_error(GL_INVALID_ENUM) && print_ok() && pass;
 162
 163                 printf("Trying glEnable(%s): ", enum_name);
 164                 glEnable(enum_value);
 165                 pass = piglit_check_gl_error(GL_INVALID_ENUM) && print_ok() && pass;
 166
 167                 printf("Trying glDisable(%s): ", enum_name);
 168                 glDisable(enum_value);
 169                 pass = piglit_check_gl_error(GL_INVALID_ENUM) && print_ok() && pass;
 170         }
 171
 172         piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
 173 }