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/*
* Copyright © 2014 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:
* Neil Roberts <neil@linux.intel.com>
*/
/**
* \file occlusion_query_meta_save.c
*
* Verify that doing a clear (which is potentially implemented as a
* meta operation) doesn't reset the samples-passed count back to
* zero.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 10;
config.window_visual = PIGLIT_GL_VISUAL_RGB;
config.khr_no_error_support = PIGLIT_NO_ERRORS;
PIGLIT_GL_TEST_CONFIG_END
static bool
run_test(bool scissor_clear)
{
GLuint query;
GLint result = -1;
piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
glClearColor(0.0, 1.0, 0.0, 0.0);
glClear(GL_COLOR_BUFFER_BIT);
glGenQueries(1, &query);
glBeginQuery(GL_SAMPLES_PASSED, query);
/* Render 64 pixels. This should affect the query */
piglit_draw_rect(0, 0, 8, 8);
/* Clear the framebuffer. This shouldn't affect the query */
glClearColor(0.0, 0.0, 1.0, 0.0);
if (scissor_clear) {
glScissor(0, 0, piglit_width / 2, piglit_height / 2);
glEnable(GL_SCISSOR_TEST);
}
glClear(GL_COLOR_BUFFER_BIT);
if (scissor_clear) {
glDisable(GL_SCISSOR_TEST);
}
/* Render another 64 pixels. This should continue adding to
* the query */
piglit_draw_rect(4, 0, 8, 8);
glEndQuery(GL_SAMPLES_PASSED);
glGetQueryObjectiv(query, GL_QUERY_RESULT, &result);
glDeleteQueries(1, &query);
piglit_present_results();
if (result != 128) {
printf("Failure: \n");
printf(" Occlusion query resulted in %d samples "
"(expected 128)\n",
result);
printf(" Scissor enabled? %s\n", scissor_clear ? "yes" : "no");
return false;
} else {
return true;
}
}
enum piglit_result
piglit_display(void)
{
bool pass = run_test(false);
pass = run_test(true) && pass;
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
GLint query_bits;
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);
}
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