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/*
* Copyright © 2011 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.
*/
/**
* @file roundmode-getintegerv.c
*
* Tests that the floating point rounding mode doesn't impact
* glGetIntegerv's rounding behavior.
*
* From the GL 2.1 specification, page 248 (page 262 of the PDF):
*
* "If a Get command is issued that returns value types different
* from the type of the value being obtained, a type conversion
* is performed... If GetIntegerv (or any of the Get commands
* below) is called, a boolean value is interpreted as either 1
* or 0, and a floating-point value is rounded to the nearest
* integer, unless the value is an RGBA color component, a
* DepthRange value, a depth buffer clear value, or a normal
* coordinate."
*/
#include "piglit-util-gl-common.h"
#include <fenv.h>
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 10;
config.window_visual = PIGLIT_GL_VISUAL_DOUBLE;
PIGLIT_GL_TEST_CONFIG_END
enum piglit_result
piglit_display(void)
{
/* UNREACHED */
return PIGLIT_FAIL;
}
static bool
test(float val, int expect)
{
GLint out;
glFogf(GL_FOG_START, val);
glGetIntegerv(GL_FOG_START, &out);
if (out != expect) {
printf("Set fog start to %.1f, expected %d, got %d\n",
val, expect, out);
return false;
} else {
printf("Set fog start to %.1f, got %d\n", val, out);
return true;
}
}
void
piglit_init(int argc, char **argv)
{
int ret;
bool pass = true;
ret = fesetround(FE_UPWARD);
if (ret != 0) {
printf("Couldn't set rounding mode\n");
piglit_report_result(PIGLIT_SKIP);
}
pass = test(2.2, 2) && pass;
pass = test(2.8, 3) && pass;
pass = test(-2.2, -2) && pass;
pass = test(-2.8, -3) && pass;
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
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