tests/spec/arb_occlusion_query/occlusion_query.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  * Authors:
  24  *    Ian Romanick <ian.d.romanick@intel.com>
  25  */
  26
  27 /**
  28  * \file occlusion_query.c
  29  * Simple test for GL_ARB_occlusion_query.
  30  */
  31
  32 #include "piglit-util-gl.h"
  33
  34 PIGLIT_GL_TEST_CONFIG_BEGIN
  35
  36         config.supports_gl_compat_version = 10;
  37
  38         config.window_width = 180;
  39         config.window_height = 100;
  40         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_DEPTH;
  41         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  42
  43 PIGLIT_GL_TEST_CONFIG_END
  44
  45 #define MAX_QUERIES 5
  46 static GLuint occ_queries[MAX_QUERIES];
  47
  48 static void draw_box(float x, float y, float z, float w, float h)
  49 {
  50         glBegin(GL_QUADS);
  51         glVertex3f(x, y, z);
  52         glVertex3f(x + w, y, z);
  53         glVertex3f(x + w, y + h, z);
  54         glVertex3f(x, y + h, z);
  55         glEnd();
  56 }
  57
  58
  59 static int check_result(GLint passed, GLint expected)
  60 {
  61         printf("samples passed = %d, expected = %d\n", passed, expected);
  62         return (expected == passed) ? 1 : 0;
  63 }
  64
  65
  66 static int do_test(float x, int all_at_once)
  67 {
  68         static const struct {
  69                 float x;
  70                 float y;
  71                 float z;
  72                 float w;
  73                 float h;
  74                 int expected;
  75                 GLubyte color[3];
  76         } tests[MAX_QUERIES] = {
  77                 {
  78                         25.0f, 25.0f, 0.2f, 20.0f, 20.0f, 20 * 20,
  79                         { 0x00, 0xff, 0x00 }
  80                 },
  81                 {
  82                         45.0f, 45.0f, -0.2f, 20.0f, 20.0f, 0,
  83                         { 0x00, 0x7f, 0xf0 }
  84                 },
  85                 {
  86                         10.0f, 10.0f, -0.3f, 75.0f, 75.0f,
  87                         (75 * 75) - (55 * 55),
  88                         { 0x00, 0x00, 0xff }
  89                 },
  90                 {
  91                         20.0f, 20.0f, -0.1f, 55.0f, 55.0f, 0,
  92                         { 0x7f, 0x7f, 0x00 }
  93                 },
  94                 {
  95                         50.0f, 25.0f, 0.2f, 20.0f, 20.0f, 20 * 20,
  96                         { 0x00, 0x7f, 0xf0 }
  97                 },
  98         };
  99         GLint passed;
 100         int test_pass = 1;
 101         unsigned i;
 102
 103
 104         /* Draw an initial red box that is 2500 pixels.  All of the occlusion
 105          * query measurements are relative to this box.
 106          */
 107         glColor3ub(0xff, 0x00, 0x00);
 108         draw_box(x + 20.0f, 20.0f, 0.0f, 55.0f, 55.0f);
 109
 110         for (i = 0; i < MAX_QUERIES; i++) {
 111                 glBeginQuery(GL_SAMPLES_PASSED, occ_queries[i]);
 112                 glColor3ubv(tests[i].color);
 113                 draw_box(x + tests[i].x, tests[i].y, tests[i].z,
 114                          tests[i].w, tests[i].h);
 115                 glEndQuery(GL_SAMPLES_PASSED);
 116
 117                 if (! all_at_once) {
 118                         glGetQueryObjectiv(occ_queries[i],
 119                                            GL_QUERY_RESULT, &passed);
 120                         test_pass &= check_result(passed, tests[i].expected);
 121                 }
 122         }
 123
 124
 125         if (all_at_once) {
 126                 for (i = 0; i < MAX_QUERIES; i++) {
 127                         glGetQueryObjectiv(occ_queries[i], GL_QUERY_RESULT,
 128                                            &passed);
 129                         test_pass &= check_result(passed, tests[i].expected);
 130                 }
 131         }
 132
 133         printf("\n");
 134         return test_pass;
 135 }
 136
 137 enum piglit_result
 138 piglit_display(void)
 139 {
 140         int test_pass;
 141
 142         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
 143         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 144
 145         test_pass = do_test(0.0f, 0);
 146         test_pass &= do_test(85.0f, 1);
 147
 148         piglit_present_results();
 149
 150         return test_pass ? PIGLIT_PASS : PIGLIT_FAIL;
 151 }
 152
 153 void
 154 piglit_init(int argc, char **argv)
 155 {
 156         GLint query_bits;
 157
 158         glClearColor(0.0, 0.2, 0.3, 0.0);
 159         glClearDepth(1.0);
 160
 161         glEnable(GL_DEPTH_TEST);
 162         glDepthFunc(GL_LESS);
 163
 164         piglit_require_extension("GL_ARB_occlusion_query");
 165
 166         /* It is legal for a driver to support the query API but not have
 167          * any query bits.  I wonder how many applications actually check for
 168          * this case...
 169          */
 170         glGetQueryiv(GL_SAMPLES_PASSED, GL_QUERY_COUNTER_BITS,
 171                        & query_bits);
 172         if (query_bits == 0) {
 173                 piglit_report_result(PIGLIT_SKIP);
 174         }
 175
 176
 177         glGenQueries(MAX_QUERIES, occ_queries);
 178 }