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/*
* Copyright © 2009 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Authors:
* Ian Romanick <ian.d.romanick@intel.com>
*/
/**
* \file occlusion_query.c
* Simple test for GL_ARB_occlusion_query.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 10;
config.window_width = 180;
config.window_height = 100;
config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_DEPTH;
config.khr_no_error_support = PIGLIT_NO_ERRORS;
PIGLIT_GL_TEST_CONFIG_END
#define MAX_QUERIES 5
static GLuint occ_queries[MAX_QUERIES];
static void draw_box(float x, float y, float z, float w, float h)
{
glBegin(GL_QUADS);
glVertex3f(x, y, z);
glVertex3f(x + w, y, z);
glVertex3f(x + w, y + h, z);
glVertex3f(x, y + h, z);
glEnd();
}
static int check_result(GLint passed, GLint expected)
{
printf("samples passed = %d, expected = %d\n", passed, expected);
return (expected == passed) ? 1 : 0;
}
static int do_test(float x, int all_at_once)
{
static const struct {
float x;
float y;
float z;
float w;
float h;
int expected;
GLubyte color[3];
} tests[MAX_QUERIES] = {
{
25.0f, 25.0f, 0.2f, 20.0f, 20.0f, 20 * 20,
{ 0x00, 0xff, 0x00 }
},
{
45.0f, 45.0f, -0.2f, 20.0f, 20.0f, 0,
{ 0x00, 0x7f, 0xf0 }
},
{
10.0f, 10.0f, -0.3f, 75.0f, 75.0f,
(75 * 75) - (55 * 55),
{ 0x00, 0x00, 0xff }
},
{
20.0f, 20.0f, -0.1f, 55.0f, 55.0f, 0,
{ 0x7f, 0x7f, 0x00 }
},
{
50.0f, 25.0f, 0.2f, 20.0f, 20.0f, 20 * 20,
{ 0x00, 0x7f, 0xf0 }
},
};
GLint passed;
int test_pass = 1;
unsigned i;
/* Draw an initial red box that is 2500 pixels. All of the occlusion
* query measurements are relative to this box.
*/
glColor3ub(0xff, 0x00, 0x00);
draw_box(x + 20.0f, 20.0f, 0.0f, 55.0f, 55.0f);
for (i = 0; i < MAX_QUERIES; i++) {
glBeginQuery(GL_SAMPLES_PASSED, occ_queries[i]);
glColor3ubv(tests[i].color);
draw_box(x + tests[i].x, tests[i].y, tests[i].z,
tests[i].w, tests[i].h);
glEndQuery(GL_SAMPLES_PASSED);
if (! all_at_once) {
glGetQueryObjectiv(occ_queries[i],
GL_QUERY_RESULT, &passed);
test_pass &= check_result(passed, tests[i].expected);
}
}
if (all_at_once) {
for (i = 0; i < MAX_QUERIES; i++) {
glGetQueryObjectiv(occ_queries[i], GL_QUERY_RESULT,
&passed);
test_pass &= check_result(passed, tests[i].expected);
}
}
printf("\n");
return test_pass;
}
enum piglit_result
piglit_display(void)
{
int test_pass;
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
test_pass = do_test(0.0f, 0);
test_pass &= do_test(85.0f, 1);
piglit_present_results();
return test_pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
GLint query_bits;
glClearColor(0.0, 0.2, 0.3, 0.0);
glClearDepth(1.0);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
piglit_require_extension("GL_ARB_occlusion_query");
/* It is legal for a driver to support the query API but not have
* any query bits. I wonder how many applications actually check for
* this case...
*/
glGetQueryiv(GL_SAMPLES_PASSED, GL_QUERY_COUNTER_BITS,
& query_bits);
if (query_bits == 0) {
piglit_report_result(PIGLIT_SKIP);
}
glGenQueries(MAX_QUERIES, occ_queries);
}
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