qt5base-lts/tests/auto/gui/qopengl/tst_qopengl.cpp
Allan Sandfeld Jensen 8a031696a1 Make QOpenGLTextureCache::bindTexture upload efficiently
Currently QOpenGLTextureCache::bindTexture always convert any uploaded
image to RGBA8888 before uploading. This is quite inefficient when
OpenGL natively supports uploading formats in the original format.

This patch adds support for uploading a few native QImage formats. This
also get the performance of QOpenGLTextureCache::bindTexture on par with
QGLContext::bindTexture.

The texture brush used by QOpenGLPaintEngine is also converted to QImage,
since bindTexture will convert it to QImage anyway, and going over QPixmap
may cause an unnecessary conversion.

[ChangeLog][QtGui][QOpenGLTextureCache] Support uploading common QImage
formats directly to OpenGL when supported.

Change-Id: I828a763126441a98e4547c32ef52dddf7c129a32
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
2014-07-04 16:09:27 +02:00

1060 lines
35 KiB
C++

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#include <QtGui/private/qopenglcontext_p.h>
#include <QtGui/QOpenGLFramebufferObject>
#include <QtGui/QOpenGLFunctions>
#include <QtGui/QOpenGLVertexArrayObject>
#include <QtGui/QOpenGLPaintDevice>
#include <QtGui/QPainter>
#include <QtGui/QScreen>
#include <QtGui/QWindow>
#include <QtGui/QOffscreenSurface>
#include <QtGui/QGenericMatrix>
#include <QtGui/QMatrix4x4>
#include <QtGui/private/qopengltextureblitter_p.h>
#include <QtGui/private/qguiapplication_p.h>
#include <qpa/qplatformintegration.h>
#include <qpa/qplatformnativeinterface.h>
#include <QtTest/QtTest>
#include <QSignalSpy>
#ifdef USE_GLX
// Must be included last due to the X11 types
#include <QtPlatformHeaders/QGLXNativeContext>
#endif
Q_DECLARE_METATYPE(QImage::Format)
class tst_QOpenGL : public QObject
{
Q_OBJECT
private slots:
void sharedResourceCleanup_data();
void sharedResourceCleanup();
void multiGroupSharedResourceCleanup_data();
void multiGroupSharedResourceCleanup();
void multiGroupSharedResourceCleanupCustom_data();
void multiGroupSharedResourceCleanupCustom();
void fboSimpleRendering_data();
void fboSimpleRendering();
void fboTextureOwnership_data();
void fboTextureOwnership();
void fboRendering_data();
void fboRendering();
void fboHandleNulledAfterContextDestroyed();
void openGLPaintDevice_data();
void openGLPaintDevice();
void aboutToBeDestroyed();
void sizeLessWindow();
void QTBUG15621_triangulatingStrokerDivZero();
void textureblitterFullSourceRectTransform();
void textureblitterPartOriginBottomLeftSourceRectTransform();
void textureblitterPartOriginTopLeftSourceRectTransform();
void textureblitterFullTargetRectTransform();
void textureblitterPartTargetRectTransform();
#ifdef USE_GLX
void glxContextWrap();
#endif
void vaoCreate();
};
struct SharedResourceTracker
{
SharedResourceTracker()
{
reset();
}
void reset()
{
invalidateResourceCalls = 0;
freeResourceCalls = 0;
destructorCalls = 0;
}
int invalidateResourceCalls;
int freeResourceCalls;
int destructorCalls;
};
struct SharedResource : public QOpenGLSharedResource
{
SharedResource(SharedResourceTracker *t)
: QOpenGLSharedResource(QOpenGLContextGroup::currentContextGroup())
, resource(1)
, tracker(t)
{
}
SharedResource(QOpenGLContext *ctx)
: QOpenGLSharedResource(ctx->shareGroup())
, resource(1)
, tracker(0)
{
}
~SharedResource()
{
if (tracker)
tracker->destructorCalls++;
}
void invalidateResource()
{
resource = 0;
if (tracker)
tracker->invalidateResourceCalls++;
}
void freeResource(QOpenGLContext *context)
{
Q_ASSERT(context == QOpenGLContext::currentContext());
Q_UNUSED(context)
resource = 0;
if (tracker)
tracker->freeResourceCalls++;
}
int resource;
SharedResourceTracker *tracker;
};
static QSurface *createSurface(int surfaceClass)
{
if (surfaceClass == int(QSurface::Window)) {
QWindow *window = new QWindow;
window->setSurfaceType(QWindow::OpenGLSurface);
window->setGeometry(0, 0, 10, 10);
window->create();
return window;
} else if (surfaceClass == int(QSurface::Offscreen)) {
// Create a window and get the format from that. For example, if an EGL
// implementation provides 565 and 888 configs for PBUFFER_BIT but only
// 888 for WINDOW_BIT, we may end up with a pbuffer surface that is
// incompatible with the context since it could choose the 565 while the
// window and the context uses a config with 888.
static QSurfaceFormat format;
if (format.redBufferSize() == -1) {
QWindow *window = new QWindow;
window->setSurfaceType(QWindow::OpenGLSurface);
window->setGeometry(0, 0, 10, 10);
window->create();
format = window->format();
delete window;
}
QOffscreenSurface *offscreenSurface = new QOffscreenSurface;
offscreenSurface->setFormat(format);
offscreenSurface->create();
return offscreenSurface;
}
return 0;
}
static void common_data()
{
QTest::addColumn<int>("surfaceClass");
QTest::newRow("Using QWindow") << int(QSurface::Window);
QTest::newRow("Using QOffscreenSurface") << int(QSurface::Offscreen);
}
void tst_QOpenGL::sharedResourceCleanup_data()
{
common_data();
}
void tst_QOpenGL::sharedResourceCleanup()
{
QFETCH(int, surfaceClass);
QScopedPointer<QSurface> surface(createSurface(surfaceClass));
QOpenGLContext *ctx = new QOpenGLContext;
QVERIFY(ctx->create());
QVERIFY(ctx->makeCurrent(surface.data()));
SharedResourceTracker tracker;
SharedResource *resource = new SharedResource(&tracker);
resource->free();
QCOMPARE(tracker.invalidateResourceCalls, 0);
QCOMPARE(tracker.freeResourceCalls, 1);
QCOMPARE(tracker.destructorCalls, 1);
tracker.reset();
resource = new SharedResource(&tracker);
QOpenGLContext *ctx2 = new QOpenGLContext;
ctx2->setShareContext(ctx);
QVERIFY(ctx2->create());
delete ctx;
resource->free();
// no current context, freeResource() delayed
QCOMPARE(tracker.invalidateResourceCalls, 0);
QCOMPARE(tracker.freeResourceCalls, 0);
QCOMPARE(tracker.destructorCalls, 0);
ctx2->makeCurrent(surface.data());
// freeResource() should now have been called
QCOMPARE(tracker.invalidateResourceCalls, 0);
QCOMPARE(tracker.freeResourceCalls, 1);
QCOMPARE(tracker.destructorCalls, 1);
tracker.reset();
resource = new SharedResource(&tracker);
// this should cause invalidateResource() to be called
delete ctx2;
QCOMPARE(tracker.invalidateResourceCalls, 1);
QCOMPARE(tracker.freeResourceCalls, 0);
QCOMPARE(tracker.destructorCalls, 0);
// should have no effect other than destroying the resource,
// as it has already been invalidated
resource->free();
QCOMPARE(tracker.invalidateResourceCalls, 1);
QCOMPARE(tracker.freeResourceCalls, 0);
QCOMPARE(tracker.destructorCalls, 1);
}
void tst_QOpenGL::multiGroupSharedResourceCleanup_data()
{
common_data();
}
void tst_QOpenGL::multiGroupSharedResourceCleanup()
{
QFETCH(int, surfaceClass);
QScopedPointer<QSurface> surface(createSurface(surfaceClass));
for (int i = 0; i < 10; ++i) {
QOpenGLContext *gl = new QOpenGLContext();
QVERIFY(gl->create());
gl->makeCurrent(surface.data());
{
// Cause QOpenGLMultiGroupSharedResource instantiation.
QOpenGLFunctions func(gl);
}
delete gl;
// Cause context group's deleteLater() to be processed.
QCoreApplication::sendPostedEvents(0, QEvent::DeferredDelete);
}
// Shouldn't crash when application exits.
}
void tst_QOpenGL::multiGroupSharedResourceCleanupCustom_data()
{
common_data();
}
void tst_QOpenGL::multiGroupSharedResourceCleanupCustom()
{
QFETCH(int, surfaceClass);
QScopedPointer<QSurface> surface(createSurface(surfaceClass));
QOpenGLContext *ctx = new QOpenGLContext();
QVERIFY(ctx->create());
QVERIFY(ctx->makeCurrent(surface.data()));
QOpenGLMultiGroupSharedResource multiGroupSharedResource;
SharedResource *resource = multiGroupSharedResource.value<SharedResource>(ctx);
SharedResourceTracker tracker;
resource->tracker = &tracker;
delete ctx;
QCOMPARE(tracker.invalidateResourceCalls, 1);
QCOMPARE(tracker.freeResourceCalls, 0);
QCOMPARE(tracker.destructorCalls, 1);
}
static bool fuzzyComparePixels(const QRgb testPixel, const QRgb refPixel, const char* file, int line, int x = -1, int y = -1)
{
static int maxFuzz = 1;
static bool maxFuzzSet = false;
// On 16 bpp systems, we need to allow for more fuzz:
if (!maxFuzzSet) {
maxFuzzSet = true;
if (QGuiApplication::primaryScreen()->depth() < 24)
maxFuzz = 32;
}
int redFuzz = qAbs(qRed(testPixel) - qRed(refPixel));
int greenFuzz = qAbs(qGreen(testPixel) - qGreen(refPixel));
int blueFuzz = qAbs(qBlue(testPixel) - qBlue(refPixel));
int alphaFuzz = qAbs(qAlpha(testPixel) - qAlpha(refPixel));
if (refPixel != 0 && testPixel == 0) {
QString msg;
if (x >= 0) {
msg = QString("Test pixel [%1, %2] is null (black) when it should be (%3,%4,%5,%6)")
.arg(x).arg(y)
.arg(qRed(refPixel)).arg(qGreen(refPixel)).arg(qBlue(refPixel)).arg(qAlpha(refPixel));
} else {
msg = QString("Test pixel is null (black) when it should be (%2,%3,%4,%5)")
.arg(qRed(refPixel)).arg(qGreen(refPixel)).arg(qBlue(refPixel)).arg(qAlpha(refPixel));
}
QTest::qFail(msg.toLatin1(), file, line);
return false;
}
if (redFuzz > maxFuzz || greenFuzz > maxFuzz || blueFuzz > maxFuzz || alphaFuzz > maxFuzz) {
QString msg;
if (x >= 0)
msg = QString("Pixel [%1,%2]: ").arg(x).arg(y);
else
msg = QString("Pixel ");
msg += QString("Max fuzz (%1) exceeded: (%2,%3,%4,%5) vs (%6,%7,%8,%9)")
.arg(maxFuzz)
.arg(qRed(testPixel)).arg(qGreen(testPixel)).arg(qBlue(testPixel)).arg(qAlpha(testPixel))
.arg(qRed(refPixel)).arg(qGreen(refPixel)).arg(qBlue(refPixel)).arg(qAlpha(refPixel));
QTest::qFail(msg.toLatin1(), file, line);
return false;
}
return true;
}
static void fuzzyCompareImages(const QImage &testImage, const QImage &referenceImage, const char* file, int line)
{
QCOMPARE(testImage.width(), referenceImage.width());
QCOMPARE(testImage.height(), referenceImage.height());
for (int y = 0; y < testImage.height(); y++) {
for (int x = 0; x < testImage.width(); x++) {
if (!fuzzyComparePixels(testImage.pixel(x, y), referenceImage.pixel(x, y), file, line, x, y)) {
// Might as well save the images for easier debugging:
referenceImage.save("referenceImage.png");
testImage.save("testImage.png");
return;
}
}
}
}
#define QFUZZY_COMPARE_IMAGES(A,B) \
fuzzyCompareImages(A, B, __FILE__, __LINE__)
#define QFUZZY_COMPARE_PIXELS(A,B) \
fuzzyComparePixels(A, B, __FILE__, __LINE__)
void qt_opengl_draw_test_pattern(QPainter* painter, int width, int height)
{
QPainterPath intersectingPath;
intersectingPath.moveTo(0, 0);
intersectingPath.lineTo(100, 0);
intersectingPath.lineTo(0, 100);
intersectingPath.lineTo(100, 100);
intersectingPath.closeSubpath();
QPainterPath trianglePath;
trianglePath.moveTo(50, 0);
trianglePath.lineTo(100, 100);
trianglePath.lineTo(0, 100);
trianglePath.closeSubpath();
painter->setTransform(QTransform()); // reset xform
painter->fillRect(-1, -1, width+2, height+2, Qt::red); // Background
painter->translate(14, 14);
painter->fillPath(intersectingPath, Qt::blue); // Test stencil buffer works
painter->translate(128, 0);
painter->setClipPath(trianglePath); // Test depth buffer works
painter->setTransform(QTransform()); // reset xform ready for fill
painter->fillRect(-1, -1, width+2, height+2, Qt::green);
}
void qt_opengl_check_test_pattern(const QImage& img)
{
// As we're doing more than trivial painting, we can't just compare to
// an image rendered with raster. Instead, we sample at well-defined
// test-points:
QVERIFY(!img.isNull());
QVERIFY2(img.width() > 217, QByteArray::number(img.width()));
QVERIFY2(img.height() > 90, QByteArray::number(img.height()));
QFUZZY_COMPARE_PIXELS(img.pixel(39, 64), QColor(Qt::red).rgb());
QFUZZY_COMPARE_PIXELS(img.pixel(89, 64), QColor(Qt::red).rgb());
QFUZZY_COMPARE_PIXELS(img.pixel(64, 39), QColor(Qt::blue).rgb());
QFUZZY_COMPARE_PIXELS(img.pixel(64, 89), QColor(Qt::blue).rgb());
QFUZZY_COMPARE_PIXELS(img.pixel(167, 39), QColor(Qt::red).rgb());
QFUZZY_COMPARE_PIXELS(img.pixel(217, 39), QColor(Qt::red).rgb());
QFUZZY_COMPARE_PIXELS(img.pixel(192, 64), QColor(Qt::green).rgb());
}
void tst_QOpenGL::fboSimpleRendering_data()
{
common_data();
}
void tst_QOpenGL::fboSimpleRendering()
{
QFETCH(int, surfaceClass);
QScopedPointer<QSurface> surface(createSurface(surfaceClass));
QOpenGLContext ctx;
QVERIFY(ctx.create());
QVERIFY(ctx.makeCurrent(surface.data()));
if (!QOpenGLFramebufferObject::hasOpenGLFramebufferObjects())
QSKIP("QOpenGLFramebufferObject not supported on this platform");
// No multisample with combined depth/stencil attachment:
QOpenGLFramebufferObjectFormat fboFormat;
fboFormat.setAttachment(QOpenGLFramebufferObject::NoAttachment);
const QSize size(200, 100);
QScopedPointer<QOpenGLFramebufferObject> fbo(new QOpenGLFramebufferObject(size, fboFormat));
QVERIFY(fbo->bind());
ctx.functions()->glClearColor(1.0, 0.0, 0.0, 1.0);
ctx.functions()->glClear(GL_COLOR_BUFFER_BIT);
ctx.functions()->glFinish();
const QImage fb = fbo->toImage().convertToFormat(QImage::Format_RGB32);
QCOMPARE(fb.size(), size);
QImage reference(size, QImage::Format_RGB32);
reference.fill(0xffff0000);
QFUZZY_COMPARE_IMAGES(fb, reference);
}
void tst_QOpenGL::fboTextureOwnership_data()
{
common_data();
}
void tst_QOpenGL::fboTextureOwnership()
{
QFETCH(int, surfaceClass);
QScopedPointer<QSurface> surface(createSurface(surfaceClass));
QOpenGLContext ctx;
QVERIFY(ctx.create());
ctx.makeCurrent(surface.data());
if (!QOpenGLFramebufferObject::hasOpenGLFramebufferObjects())
QSKIP("QOpenGLFramebufferObject not supported on this platform");
QOpenGLFramebufferObjectFormat fboFormat;
fboFormat.setAttachment(QOpenGLFramebufferObject::NoAttachment);
QOpenGLFramebufferObject *fbo = new QOpenGLFramebufferObject(200, 100, fboFormat);
QVERIFY(fbo->texture() != 0);
fbo->bind();
// pull out the texture
GLuint texture = fbo->takeTexture();
QVERIFY(texture != 0);
QVERIFY(fbo->texture() == 0);
// verify that the next bind() creates a new texture
fbo->bind();
QVERIFY(fbo->texture() != 0 && fbo->texture() != texture);
ctx.functions()->glClearColor(1.0, 0.0, 0.0, 1.0);
ctx.functions()->glClear(GL_COLOR_BUFFER_BIT);
ctx.functions()->glFinish();
QImage fb = fbo->toImage().convertToFormat(QImage::Format_RGB32);
QImage reference(fb.size(), QImage::Format_RGB32);
reference.fill(0xffff0000);
QFUZZY_COMPARE_IMAGES(fb, reference);
ctx.functions()->glDeleteTextures(1, &texture);
delete fbo;
}
void tst_QOpenGL::fboRendering_data()
{
common_data();
}
// NOTE: This tests that CombinedDepthStencil attachment works by assuming the
// GL2 engine is being used and is implemented the same way as it was when
// this autotest was written. If this is not the case, there may be some
// false-positives: I.e. The test passes when either the depth or stencil
// buffer is actually missing. But that's probably ok anyway.
void tst_QOpenGL::fboRendering()
{
#if defined(Q_OS_LINUX) && defined(Q_CC_GNU) && !defined(__x86_64__)
QSKIP("QTBUG-22617");
#endif
QFETCH(int, surfaceClass);
QScopedPointer<QSurface> surface(createSurface(surfaceClass));
QOpenGLContext ctx;
QVERIFY(ctx.create());
QVERIFY(ctx.makeCurrent(surface.data()));
if (!QOpenGLFramebufferObject::hasOpenGLFramebufferObjects())
QSKIP("QOpenGLFramebufferObject not supported on this platform");
// No multisample with combined depth/stencil attachment:
QOpenGLFramebufferObjectFormat fboFormat;
fboFormat.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
// Uncomplicate things by using NPOT:
const QSize size(256, 128);
QOpenGLFramebufferObject fbo(size, fboFormat);
if (fbo.attachment() != QOpenGLFramebufferObject::CombinedDepthStencil)
QSKIP("FBOs missing combined depth~stencil support");
QVERIFY(fbo.bind());
QPainter fboPainter;
QOpenGLPaintDevice device(fbo.width(), fbo.height());
bool painterBegun = fboPainter.begin(&device);
QVERIFY(painterBegun);
qt_opengl_draw_test_pattern(&fboPainter, fbo.width(), fbo.height());
fboPainter.end();
const QImage fb = fbo.toImage().convertToFormat(QImage::Format_RGB32);
QCOMPARE(fb.size(), size);
qt_opengl_check_test_pattern(fb);
}
void tst_QOpenGL::fboHandleNulledAfterContextDestroyed()
{
QWindow window;
window.setSurfaceType(QWindow::OpenGLSurface);
window.setGeometry(0, 0, 10, 10);
window.create();
QOpenGLFramebufferObject *fbo = 0;
{
QOpenGLContext ctx;
QVERIFY(ctx.create());
ctx.makeCurrent(&window);
if (!QOpenGLFramebufferObject::hasOpenGLFramebufferObjects())
QSKIP("QOpenGLFramebufferObject not supported on this platform");
fbo = new QOpenGLFramebufferObject(128, 128);
QVERIFY(fbo->handle() != 0);
}
QCOMPARE(fbo->handle(), 0U);
}
void tst_QOpenGL::openGLPaintDevice_data()
{
QTest::addColumn<int>("surfaceClass");
QTest::addColumn<QImage::Format>("imageFormat");
QTest::newRow("Using QWindow - RGB32") << int(QSurface::Window) << QImage::Format_RGB32;
QTest::newRow("Using QOffscreenSurface - RGB32") << int(QSurface::Offscreen) << QImage::Format_RGB32;
QTest::newRow("Using QOffscreenSurface - RGBx8888") << int(QSurface::Offscreen) << QImage::Format_RGBX8888;
QTest::newRow("Using QOffscreenSurface - RGB888") << int(QSurface::Offscreen) << QImage::Format_RGB888;
QTest::newRow("Using QOffscreenSurface - RGB16") << int(QSurface::Offscreen) << QImage::Format_RGB16;
}
void tst_QOpenGL::openGLPaintDevice()
{
#if defined(Q_OS_LINUX) && defined(Q_CC_GNU) && !defined(__x86_64__)
QSKIP("QTBUG-22617");
#endif
QFETCH(int, surfaceClass);
QFETCH(QImage::Format, imageFormat);
QScopedPointer<QSurface> surface(createSurface(surfaceClass));
QOpenGLContext ctx;
QVERIFY(ctx.create());
QSurfaceFormat format = ctx.format();
if (format.majorVersion() < 2)
QSKIP("This test requires at least OpenGL 2.0");
QVERIFY(ctx.makeCurrent(surface.data()));
const QSize size(128, 128);
QImage image(size, imageFormat);
QPainter p(&image);
p.fillRect(0, 0, image.width() / 2, image.height() / 2, Qt::red);
p.fillRect(image.width() / 2, 0, image.width() / 2, image.height() / 2, Qt::green);
p.fillRect(image.width() / 2, image.height() / 2, image.width() / 2, image.height() / 2, Qt::blue);
p.fillRect(0, image.height() / 2, image.width() / 2, image.height() / 2, Qt::white);
p.end();
QOpenGLFramebufferObject fbo(size);
QVERIFY(fbo.bind());
QOpenGLPaintDevice device(size);
QVERIFY(p.begin(&device));
p.fillRect(0, 0, image.width() / 2, image.height() / 2, Qt::red);
p.fillRect(image.width() / 2, 0, image.width() / 2, image.height() / 2, Qt::green);
p.fillRect(image.width() / 2, image.height() / 2, image.width() / 2, image.height() / 2, Qt::blue);
p.fillRect(0, image.height() / 2, image.width() / 2, image.height() / 2, Qt::white);
p.end();
QImage actual = fbo.toImage().convertToFormat(imageFormat);
QCOMPARE(image.size(), actual.size());
QCOMPARE(image, actual);
QVERIFY(p.begin(&device));
p.fillRect(0, 0, image.width(), image.height(), Qt::black);
p.drawImage(0, 0, image);
p.end();
actual = fbo.toImage().convertToFormat(imageFormat);
QCOMPARE(image.size(), actual.size());
QCOMPARE(image, actual);
QVERIFY(p.begin(&device));
p.fillRect(0, 0, image.width(), image.height(), Qt::black);
p.fillRect(0, 0, image.width(), image.height(), QBrush(image));
p.end();
actual = fbo.toImage().convertToFormat(imageFormat);
QCOMPARE(image.size(), actual.size());
QCOMPARE(image, actual);
}
void tst_QOpenGL::aboutToBeDestroyed()
{
QWindow window;
window.setSurfaceType(QWindow::OpenGLSurface);
window.setGeometry(0, 0, 128, 128);
window.create();
QOpenGLContext *context = new QOpenGLContext;
QSignalSpy spy(context, SIGNAL(aboutToBeDestroyed()));
QVERIFY(context->create());
QVERIFY(context->makeCurrent(&window));
QCOMPARE(spy.size(), 0);
delete context;
QCOMPARE(spy.size(), 1);
}
// Verify that QOpenGLContext works with QWindows that do
// not have an explicit size set.
void tst_QOpenGL::sizeLessWindow()
{
// top-level window
{
QWindow window;
window.setSurfaceType(QWindow::OpenGLSurface);
QOpenGLContext context;
QVERIFY(context.create());
window.show();
QVERIFY(context.makeCurrent(&window));
QVERIFY(QOpenGLContext::currentContext());
}
QVERIFY(!QOpenGLContext::currentContext());
// child window
{
QWindow parent;
QWindow window(&parent);
window.setSurfaceType(QWindow::OpenGLSurface);
QOpenGLContext context;
QVERIFY(context.create());
parent.show();
window.show();
QVERIFY(context.makeCurrent(&window));
QVERIFY(QOpenGLContext::currentContext());
}
QVERIFY(!QOpenGLContext::currentContext());
}
void tst_QOpenGL::QTBUG15621_triangulatingStrokerDivZero()
{
#if defined(Q_OS_LINUX) && defined(Q_CC_GNU) && !defined(__x86_64__)
QSKIP("QTBUG-22617");
#endif
const QSize size(128, 128);
QWindow window;
window.setSurfaceType(QWindow::OpenGLSurface);
window.setGeometry(QRect(QPoint(0, 0), size));
window.create();
QOpenGLContext ctx;
QVERIFY(ctx.create());
QVERIFY(ctx.makeCurrent(&window));
if (!QOpenGLFramebufferObject::hasOpenGLFramebufferObjects())
QSKIP("QOpenGLFramebufferObject not supported on this platform");
QOpenGLFramebufferObject fbo(size);
QVERIFY(fbo.bind());
QOpenGLPaintDevice device(size);
// QTBUG-15621 is only a problem when qreal is double, but do the test anyway.
qreal delta = sizeof(qreal) == sizeof(float) ? 1e-4 : 1e-8;
QVERIFY(128 != 128 + delta);
QPainterPath path;
path.moveTo(16 + delta, 16);
path.moveTo(16, 16);
path.lineTo(16 + delta, 16); // Short lines to check for division by zero.
path.lineTo(112 - delta, 16);
path.lineTo(112, 16);
path.quadTo(112, 16, 112, 16 + delta);
path.quadTo(112, 64, 112, 112 - delta);
path.quadTo(112, 112, 112, 112);
path.cubicTo(112, 112, 112, 112, 112 - delta, 112);
path.cubicTo(80, 112, 48, 112, 16 + delta, 112);
path.cubicTo(16 + delta, 112, 16 + delta, 112, 16, 112);
path.closeSubpath();
QPen pen(Qt::red, 28, Qt::SolidLine, Qt::FlatCap, Qt::MiterJoin);
QPainter p(&device);
p.fillRect(QRect(QPoint(0, 0), size), Qt::blue);
p.strokePath(path, pen);
p.end();
const QImage image = fbo.toImage().convertToFormat(QImage::Format_RGB32);
QCOMPARE(image.size(), size);
const QRgb red = 0xffff0000;
const QRgb blue = 0xff0000ff;
QCOMPARE(image.pixel(8, 8), red);
QCOMPARE(image.pixel(119, 8), red);
QCOMPARE(image.pixel(8, 119), red);
QCOMPARE(image.pixel(119, 119), red);
QCOMPARE(image.pixel(0, 0), blue);
QCOMPARE(image.pixel(127, 0), blue);
QCOMPARE(image.pixel(0, 127), blue);
QCOMPARE(image.pixel(127, 127), blue);
QCOMPARE(image.pixel(32, 32), blue);
QCOMPARE(image.pixel(95, 32), blue);
QCOMPARE(image.pixel(32, 95), blue);
QCOMPARE(image.pixel(95, 95), blue);
}
typedef QGenericMatrix<1, 3, float> TestVertex3D;
static const float uv_top_left[] = {0.f, 1.f, 1.f};
static const float uv_bottom_left[] = {0.f, 0.f, 1.f};
static const float uv_top_right[] = {1.f, 1.f, 1.f};
static const float uv_bottom_right[] = {1.f, 0.f, 1.f};
bool q_fuzzy_compare(const TestVertex3D &left, const TestVertex3D &right) {
return qFuzzyCompare(left(0,0), right(0,0)) &&
qFuzzyCompare(left(1,0), right(1,0)) &&
qFuzzyCompare(left(2,0), right(2,0));
}
void tst_QOpenGL::textureblitterFullSourceRectTransform()
{
TestVertex3D topLeft(uv_top_left);
TestVertex3D bottomLeft(uv_bottom_left);
TestVertex3D topRight(uv_top_right);
TestVertex3D bottomRight(uv_bottom_right);
QRectF rect(0,0,1,1);
QMatrix3x3 flippedMatrix = QOpenGLTextureBlitter::sourceTransform(rect, rect.size().toSize(), QOpenGLTextureBlitter::OriginTopLeft);
TestVertex3D flippedTopLeft = flippedMatrix * topLeft;
QCOMPARE(flippedTopLeft, bottomLeft);
TestVertex3D flippedBottomLeft = flippedMatrix * bottomLeft;
QCOMPARE(flippedBottomLeft, topLeft);
TestVertex3D flippedTopRight = flippedMatrix * topRight;
QCOMPARE(flippedTopRight, bottomRight);
TestVertex3D flippedBottomRight = flippedMatrix * bottomRight;
QCOMPARE(flippedBottomRight, topRight);
QMatrix3x3 identityMatrix = QOpenGLTextureBlitter::sourceTransform(rect, rect.size().toSize(), QOpenGLTextureBlitter::OriginBottomLeft);
TestVertex3D notFlippedTopLeft = identityMatrix * topLeft;
QCOMPARE(notFlippedTopLeft, topLeft);
TestVertex3D notFlippedBottomLeft = identityMatrix * bottomLeft;
QCOMPARE(notFlippedBottomLeft, bottomLeft);
TestVertex3D notFlippedTopRight = identityMatrix * topRight;
QCOMPARE(notFlippedTopRight, topRight);
TestVertex3D notFlippedBottomRight = identityMatrix * bottomRight;
QCOMPARE(notFlippedBottomRight, bottomRight);
}
void tst_QOpenGL::textureblitterPartOriginBottomLeftSourceRectTransform()
{
TestVertex3D topLeft(uv_top_left);
TestVertex3D bottomLeft(uv_bottom_left);
TestVertex3D topRight(uv_top_right);
TestVertex3D bottomRight(uv_bottom_right);
QRectF sourceRect(50,200,200,200);
QSize textureSize(400,400);
QMatrix3x3 sourceMatrix = QOpenGLTextureBlitter::sourceTransform(sourceRect, textureSize, QOpenGLTextureBlitter::OriginBottomLeft);
const float x_point_ratio = sourceRect.topLeft().x() / textureSize.width();
const float y_point_ratio = sourceRect.topLeft().y() / textureSize.height();
const float width_ratio = sourceRect.width() / textureSize.width();
const float height_ratio = sourceRect.height() / textureSize.height();
TestVertex3D uvTopLeft = sourceMatrix * topLeft;
const float expected_top_left[] = { x_point_ratio, y_point_ratio + height_ratio, 1 };
TestVertex3D expectedTopLeft(expected_top_left);
QCOMPARE(uvTopLeft, expectedTopLeft);
TestVertex3D uvBottomLeft = sourceMatrix * bottomLeft;
const float expected_bottom_left[] = { x_point_ratio, y_point_ratio, 1 };
TestVertex3D expectedBottomLeft(expected_bottom_left);
QCOMPARE(uvBottomLeft, expectedBottomLeft);
TestVertex3D uvTopRight = sourceMatrix * topRight;
const float expected_top_right[] = { x_point_ratio + width_ratio, y_point_ratio + height_ratio, 1 };
TestVertex3D expectedTopRight(expected_top_right);
QCOMPARE(uvTopRight, expectedTopRight);
TestVertex3D uvBottomRight = sourceMatrix * bottomRight;
const float expected_bottom_right[] = { x_point_ratio + width_ratio, y_point_ratio, 1 };
TestVertex3D expectedBottomRight(expected_bottom_right);
QCOMPARE(uvBottomRight, expectedBottomRight);
}
void tst_QOpenGL::textureblitterPartOriginTopLeftSourceRectTransform()
{
TestVertex3D topLeft(uv_top_left);
TestVertex3D bottomLeft(uv_bottom_left);
TestVertex3D topRight(uv_top_right);
TestVertex3D bottomRight(uv_bottom_right);
QRectF sourceRect(50,190,170,170);
QSize textureSize(400,400);
QMatrix3x3 sourceMatrix = QOpenGLTextureBlitter::sourceTransform(sourceRect, textureSize, QOpenGLTextureBlitter::OriginTopLeft);
const float x_point_ratio = sourceRect.topLeft().x() / textureSize.width();
const float y_point_ratio = sourceRect.topLeft().y() / textureSize.height();
const float width_ratio = sourceRect.width() / textureSize.width();
const float height_ratio = sourceRect.height() / textureSize.height();
TestVertex3D uvTopLeft = sourceMatrix * topLeft;
const float expected_top_left[] = { x_point_ratio, 1 - y_point_ratio - height_ratio, 1 };
TestVertex3D expectedTopLeft(expected_top_left);
QVERIFY(q_fuzzy_compare(uvTopLeft, expectedTopLeft));
TestVertex3D uvBottomLeft = sourceMatrix * bottomLeft;
const float expected_bottom_left[] = { x_point_ratio, 1 - y_point_ratio, 1 };
TestVertex3D expectedBottomLeft(expected_bottom_left);
QVERIFY(q_fuzzy_compare(uvBottomLeft, expectedBottomLeft));
TestVertex3D uvTopRight = sourceMatrix * topRight;
const float expected_top_right[] = { x_point_ratio + width_ratio, 1 - y_point_ratio - height_ratio, 1 };
TestVertex3D expectedTopRight(expected_top_right);
QVERIFY(q_fuzzy_compare(uvTopRight, expectedTopRight));
TestVertex3D uvBottomRight = sourceMatrix * bottomRight;
const float expected_bottom_right[] = { x_point_ratio + width_ratio, 1 - y_point_ratio, 1 };
TestVertex3D expectedBottomRight(expected_bottom_right);
QVERIFY(q_fuzzy_compare(uvBottomRight, expectedBottomRight));
}
void tst_QOpenGL::textureblitterFullTargetRectTransform()
{
QVector4D topLeft(-1.f, 1.f, 0.f, 1.f);
QVector4D bottomLeft(-1.f, -1.f, 0.f, 1.f);
QVector4D topRight(1.f, 1.f, 0.f, 1.f);
QVector4D bottomRight(1.f, -1.f, 0.f, 1.f);
QRectF rect(0,0,200,200);
QMatrix4x4 targetMatrix = QOpenGLTextureBlitter::targetTransform(rect,rect.toRect());
QVector4D translatedTopLeft = targetMatrix * topLeft;
QCOMPARE(translatedTopLeft, topLeft);
QVector4D translatedBottomLeft = targetMatrix * bottomLeft;
QCOMPARE(translatedBottomLeft, bottomLeft);
QVector4D translatedTopRight = targetMatrix * topRight;
QCOMPARE(translatedTopRight, topRight);
QVector4D translatedBottomRight = targetMatrix * bottomRight;
QCOMPARE(translatedBottomRight, bottomRight);
}
void tst_QOpenGL::textureblitterPartTargetRectTransform()
{
QVector4D topLeft(-1.f, 1.f, 0.f, 1.f);
QVector4D bottomLeft(-1.f, -1.f, 0.f, 1.f);
QVector4D topRight(1.f, 1.f, 0.f, 1.f);
QVector4D bottomRight(1.f, -1.f, 0.f, 1.f);
QRectF targetRect(50,50,200,200);
QRect viewport(0,0,400,400);
//multiply by 2 since coordinate system goes from -1 -> 1;
qreal x_point_ratio = (50. / 400.) * 2;
qreal y_point_ratio = (50. / 400.) * 2;
qreal width_ratio = (200. / 400.) * 2;
qreal height_ratio = (200. / 400.) * 2;
QMatrix4x4 targetMatrix = QOpenGLTextureBlitter::targetTransform(targetRect, viewport);
QVector4D targetTopLeft = targetMatrix * topLeft;
QVector4D expectedTopLeft(-1 + x_point_ratio, 1 - y_point_ratio, .0, 1.0);
QCOMPARE(targetTopLeft, expectedTopLeft);
QVector4D targetBottomLeft = targetMatrix * bottomLeft;
QVector4D expectedBottomLeft(-1 + x_point_ratio, 1 - y_point_ratio - height_ratio, 0.0, 1.0);
QCOMPARE(targetBottomLeft, expectedBottomLeft);
QVector4D targetTopRight = targetMatrix * topRight;
QVector4D expectedTopRight(-1 + x_point_ratio + width_ratio, 1 - y_point_ratio, 0.0, 1.0);
QCOMPARE(targetTopRight, expectedTopRight);
QVector4D targetBottomRight = targetMatrix * bottomRight;
QVector4D expectedBottomRight(-1 + x_point_ratio + width_ratio, 1 - y_point_ratio - height_ratio, 0.0, 1.0);
QCOMPARE(targetBottomRight, expectedBottomRight);
}
#ifdef USE_GLX
void tst_QOpenGL::glxContextWrap()
{
QWindow *window = new QWindow;
window->setSurfaceType(QWindow::OpenGLSurface);
window->setGeometry(0, 0, 10, 10);
window->show();
QTest::qWaitForWindowExposed(window);
QPlatformNativeInterface *nativeIf = QGuiApplicationPrivate::instance()->platformIntegration()->nativeInterface();
QVERIFY(nativeIf);
// Fetch a GLXContext.
QOpenGLContext *ctx0 = new QOpenGLContext;
ctx0->setFormat(window->format());
QVERIFY(ctx0->create());
QVariant v = ctx0->nativeHandle();
QVERIFY(!v.isNull());
QVERIFY(v.canConvert<QGLXNativeContext>());
GLXContext context = v.value<QGLXNativeContext>().context();
QVERIFY(context);
// Then create another QOpenGLContext wrapping it.
QOpenGLContext *ctx = new QOpenGLContext;
ctx->setNativeHandle(QVariant::fromValue<QGLXNativeContext>(QGLXNativeContext(context)));
QVERIFY(ctx->create());
QVERIFY(ctx->nativeHandle().value<QGLXNativeContext>().context() == context);
QVERIFY(nativeIf->nativeResourceForContext(QByteArrayLiteral("glxcontext"), ctx) == (void *) context);
QVERIFY(ctx->makeCurrent(window));
ctx->doneCurrent();
delete ctx;
delete ctx0;
delete window;
}
#endif // USE_GLX
void tst_QOpenGL::vaoCreate()
{
QScopedPointer<QSurface> surface(createSurface(QSurface::Window));
QOpenGLContext *ctx = new QOpenGLContext;
ctx->create();
ctx->makeCurrent(surface.data());
QOpenGLVertexArrayObject vao;
bool success = vao.create();
if (ctx->isOpenGLES()) {
if (ctx->format().majorVersion() >= 3 || ctx->hasExtension(QByteArrayLiteral("GL_OES_vertex_array_object")))
QVERIFY(success);
} else {
if (ctx->format().majorVersion() >= 3 || ctx->hasExtension(QByteArrayLiteral("GL_ARB_vertex_array_object")))
QVERIFY(success);
}
vao.destroy();
ctx->doneCurrent();
}
QTEST_MAIN(tst_QOpenGL)
#include "tst_qopengl.moc"