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// BEGIN_COPYRIGHT -*- glean -*-
//
// Copyright (C) 2000 Allen Akin All Rights Reserved.
//
// 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 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 ALLEN AKIN 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.
//
// END_COPYRIGHT
// tbinding.cpp: Test functions in the window-system binding
#include "tbinding.h"
#include "image.h"
#include "rand.h"
#include <cmath>
#include <algorithm> // max
#if 0
#ifdef __UNIX__
#include <unistd.h>
#endif
#include <iostream>
#include <fstream>
#include <cmath>
#include "dsconfig.h"
#include "dsfilt.h"
#include "dsurf.h"
#include "winsys.h"
#include "environ.h"
#include "rc.h"
#include "glutils.h"
#include "stats.h"
#include "tbinding.h"
#include "misc.h"
#endif
namespace {
bool
makeCurrentOK(GLEAN::DrawingSurfaceConfig& config) {
using namespace GLEAN;
float expected[4];
glClear(GL_COLOR_BUFFER_BIT);
glGetFloatv(GL_COLOR_CLEAR_VALUE, expected);
Image probe(1, 1, GL_RGBA, GL_FLOAT);
probe.read(drawingSize/2, drawingSize/2);
const float* actual = reinterpret_cast<float*>(probe.pixels());
double maxError = ErrorBits(fabs(expected[0] - actual[0]), config.r);
maxError = max(maxError,
ErrorBits(fabs(expected[1] - actual[1]), config.g));
maxError = max(maxError,
ErrorBits(fabs(expected[2] - actual[2]), config.b));
return maxError <= 1.0;
} // makeCurrentOK
} // anonymous namespace
namespace GLEAN {
///////////////////////////////////////////////////////////////////////////////
// runOne: Run a single test case
///////////////////////////////////////////////////////////////////////////////
void
MakeCurrentTest::runOne(MakeCurrentResult& r, Window& w) {
DrawingSurfaceConfig& config = *(r.config);
WindowSystem& ws = env->winSys;
// The rendering contexts to be used:
vector<RenderingContext*> rcs;
RandomBitsDouble rRand(config.r, 712105);
RandomBitsDouble gRand(config.g, 63230);
RandomBitsDouble bRand(config.b, 912167);
// Create rendering contexts to be used with the test window.
// Note that the first context (at index 0) is always the
// null context.
rcs.push_back(0);
r.descriptions.push_back("Null context");
ws.makeCurrent();
r.testSequence.push_back(static_cast<int>(rcs.size()) - 1);
rcs.push_back(new RenderingContext(env->winSys, config, 0, true));
r.descriptions.push_back("Direct-rendering context");
ws.makeCurrent(*rcs.back(), w);
r.testSequence.push_back(static_cast<int>(rcs.size()) - 1);
glDisable(GL_DITHER);
glClearColor(rRand.next(), gRand.next(), bRand.next(), 1.0);
if (!makeCurrentOK(config))
goto failed;
rcs.push_back(new RenderingContext(env->winSys, config, 0, false));
r.descriptions.push_back("Indirect-rendering context");
ws.makeCurrent(*rcs.back(), w);
r.testSequence.push_back(static_cast<int>(rcs.size()) - 1);
glDisable(GL_DITHER);
glClearColor(rRand.next(), gRand.next(), bRand.next(), 1.0);
if (!makeCurrentOK(config))
goto failed;
// Now run through all the pairs of rendering contexts, making
// them current in sequence and checking that rendering looks
// correct. Don't worry about the redundant sequences; we want
// to check those, too!
int i;
for (i = 0; i < static_cast<int>(rcs.size()); ++i)
for (int j = 0; j < static_cast<int>(rcs.size()); ++j) {
r.testSequence.push_back(i);
if (rcs[i] == 0)
ws.makeCurrent();
else {
ws.makeCurrent(*rcs[i], w);
if (!makeCurrentOK(config))
goto failed;
}
r.testSequence.push_back(j);
if (rcs[j] == 0)
ws.makeCurrent();
else {
ws.makeCurrent(*rcs[j], w);
if (!makeCurrentOK(config))
goto failed;
}
}
r.pass = true;
goto cleanup;
failed:
r.pass = false;
cleanup:
for (i = 0; i < static_cast<int>(rcs.size()); ++i)
if (rcs[i]) {
// We need to make sure that no GL commands are
// pending when the window is destroyed, or we
// risk a GLXBadCurrentWindow error at some
// indeterminate time in the future when
// glXMakeCurrent() is executed.
// In theory, if glReadPixels() is the last
// command executed by a test, then an implicit
// flush has occurred, and the command queue is
// empty. In practice, we have to protect
// against the possibility that the implicit
// flush is not enough to avoid the error.
ws.makeCurrent(*rcs[i], w);
glFinish();
ws.makeCurrent();
delete rcs[i];
}
} // MakeCurrentTest::runOne
///////////////////////////////////////////////////////////////////////////////
// logOne: Log a single test case
///////////////////////////////////////////////////////////////////////////////
void
MakeCurrentTest::logOne(MakeCurrentResult& r) {
logPassFail(r);
logConcise(r);
if (!r.pass) {
env->log << "\tSequence of MakeCurrent operations was:\n";
for (int k = 0; k < static_cast<int>(r.testSequence.size()); ++k)
env->log << "\t\t"
<< r.descriptions[r.testSequence[k]]
<< '\n';
}
} // MakeCurrentTestTest::logOne
///////////////////////////////////////////////////////////////////////////////
// The test object itself:
///////////////////////////////////////////////////////////////////////////////
MakeCurrentTest makeCurrentTest("makeCurrent", "window, rgb",
"This test sanity-checks the ability to use multiple rendering\n"
"contexts. It creates several contexts with differing\n"
"characteristics (e.g., some are direct-rendering and some\n"
"are indirect-rendering, if the window system binding supports\n"
"that distinction). Then it runs through all pairs of contexts,\n"
"making each one \"current\" in turn and verifying that simple\n"
"rendering succeeds.\n"
);
} // namespace GLEAN
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