tests/spec/arb_occlusion_query/occlusion_query_order.c

   1 /*
   2  * Copyright © 2009,2012 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  *    Carl Worth <cworth@cworth.org>
  26  */
  27
  28 /**
  29  * \file occlusion_query_order.c
  30  *
  31  * Verify that once one occlusion query has results, all previous
  32  * occlusion queries also have results available, as per the spec.:
  33  *
  34  *      It must always be true that if any query object
  35  *      returns a result available of TRUE, all queries of
  36  *      the same type issued prior to that query must also
  37  *      return TRUE. [OpenGL 3.1 § 6.1.6]
  38  */
  39
  40 #include "piglit-util-gl.h"
  41
  42 PIGLIT_GL_TEST_CONFIG_BEGIN
  43
  44         config.supports_gl_compat_version = 10;
  45         config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_DEPTH;
  46         config.khr_no_error_support = PIGLIT_NO_ERRORS;
  47
  48 PIGLIT_GL_TEST_CONFIG_END
  49
  50 static void
  51 draw_some_things(double frac)
  52 {
  53         int i;
  54         float x, y;
  55
  56         x = 0.0;
  57         y = frac * piglit_height;
  58
  59         glBegin(GL_QUADS);
  60
  61         for (i=0; i < 1024; i++) {
  62                 glVertex3f(x, y, 0.0);
  63                 glVertex3f(x + 1.0, y, 0.0);
  64                 glVertex3f(x + 1.0, y + 1.0, 0.0);
  65                 glVertex3f(x, y + 1.0, 0.0);
  66
  67                 x++;
  68                 if (x >= piglit_width) {
  69                         x = 0.0;
  70                         y++;
  71                         if (y >= piglit_height) {
  72                                 y = 0.0;
  73                         }
  74                 }
  75         }
  76
  77         glEnd();
  78 }
  79
  80 enum piglit_result
  81 piglit_display(void)
  82 {
  83 #define NUM_QUERIES 5
  84         GLuint queries[NUM_QUERIES], available;
  85         bool test_pass = true;
  86         GLint result;
  87         int i;
  88
  89         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
  90
  91         glClearColor(1.0, 0.0, 0.0, 1.0);
  92         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
  93
  94         glGenQueries(NUM_QUERIES, queries);
  95
  96         glColor4f(0.0f, 1.0f, 0.0f, 1.0f);
  97
  98         /* Queue up a bunch of drawing with several queries. */
  99         for (i = 0; i < NUM_QUERIES - 1;  i++)
 100         {
 101                 glBeginQuery(GL_SAMPLES_PASSED, queries[i]);
 102
 103                 draw_some_things((double)i / (NUM_QUERIES - 1));
 104
 105                 glEndQuery(GL_SAMPLES_PASSED);
 106         }
 107
 108         /* Now fire off a query with no drawing. */
 109         glBeginQuery(GL_SAMPLES_PASSED, queries[NUM_QUERIES - 1]);
 110         glEndQuery(GL_SAMPLES_PASSED);
 111
 112         /* Get the result for the final query. */
 113         glGetQueryObjectiv(queries[NUM_QUERIES - 1], GL_QUERY_RESULT, &result);
 114
 115         /* At this point, the results of all the previous queries
 116          * should be available.
 117          */
 118         for (i = 0; i < NUM_QUERIES - 1; i++)
 119         {
 120                 glGetQueryObjectuiv(queries[i], GL_QUERY_RESULT_AVAILABLE,
 121                                     &available);
 122                 if (available != 1) {
 123                         printf("Query #%d result not available (expected in-order processing)\n", i);
 124                         test_pass = false;
 125                 }
 126         }
 127
 128         glDeleteQueries(NUM_QUERIES, queries);
 129
 130         piglit_present_results();
 131
 132         return test_pass ? PIGLIT_PASS : PIGLIT_FAIL;
 133 }
 134
 135 void
 136 piglit_init(int argc, char **argv)
 137 {
 138         GLint query_bits;
 139
 140         piglit_require_extension("GL_ARB_occlusion_query");
 141
 142         /* It is legal for a driver to support the query API but not have
 143          * any query bits.  I wonder how many applications actually check for
 144          * this case...
 145          */
 146         glGetQueryiv(GL_SAMPLES_PASSED, GL_QUERY_COUNTER_BITS,
 147                        & query_bits);
 148         if (query_bits == 0) {
 149                 piglit_report_result(PIGLIT_SKIP);
 150         }
 151 }