QOpenGLTextureBlitter: add some autotests
Change-Id: I07a4847a19908c1a6d7fb02649b306dfa0148f49 Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>
This commit is contained in:
Jørgen Lind
The Qt Project
parent
579526cfec
commit
6fbef080a0
@ -48,6 +48,10 @@
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#include <QtGui/QScreen>
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#include <QtGui/QWindow>
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#include <QtGui/QOffscreenSurface>
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#include <QtGui/QGenericMatrix>
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#include <QtGui/QMatrix4x4>
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#include <QtGui/private/qopengltextureblitter_p.h>
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#include <QtTest/QtTest>
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@ -75,6 +79,11 @@ private slots:
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void openGLPaintDevice();
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void aboutToBeDestroyed();
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void QTBUG15621_triangulatingStrokerDivZero();
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void textureblitterFullSourceRectTransform();
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void textureblitterPartOriginBottomLeftSourceRectTransform();
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void textureblitterPartOriginTopLeftSourceRectTransform();
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void textureblitterFullTargetRectTransform();
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void textureblitterPartTargetRectTransform();
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};
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struct SharedResourceTracker
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@ -708,6 +717,188 @@ void tst_QOpenGL::QTBUG15621_triangulatingStrokerDivZero()
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QCOMPARE(image.pixel(95, 95), blue);
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}
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typedef QGenericMatrix<1, 3, float> TestVertex3D;
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static const float uv_top_left[] = {0.f, 1.f, 1.f};
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static const float uv_bottom_left[] = {0.f, 0.f, 1.f};
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static const float uv_top_right[] = {1.f, 1.f, 1.f};
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static const float uv_bottom_right[] = {1.f, 0.f, 1.f};
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bool q_fuzzy_compare(const TestVertex3D &left, const TestVertex3D &right) {
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return qFuzzyCompare(left(0,0), right(0,0)) &&
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qFuzzyCompare(left(1,0), right(1,0)) &&
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qFuzzyCompare(left(2,0), right(2,0));
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}
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void tst_QOpenGL::textureblitterFullSourceRectTransform()
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{
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TestVertex3D topLeft(uv_top_left);
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TestVertex3D bottomLeft(uv_bottom_left);
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TestVertex3D topRight(uv_top_right);
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TestVertex3D bottomRight(uv_bottom_right);
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QRectF rect(0,0,1,1);
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QMatrix3x3 flippedMatrix = QOpenGLTextureBlitter::sourceTransform(rect, rect.size().toSize(), QOpenGLTextureBlitter::OriginTopLeft);
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TestVertex3D flippedTopLeft = flippedMatrix * topLeft;
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QCOMPARE(flippedTopLeft, bottomLeft);
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TestVertex3D flippedBottomLeft = flippedMatrix * bottomLeft;
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QCOMPARE(flippedBottomLeft, topLeft);
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TestVertex3D flippedTopRight = flippedMatrix * topRight;
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QCOMPARE(flippedTopRight, bottomRight);
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TestVertex3D flippedBottomRight = flippedMatrix * bottomRight;
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QCOMPARE(flippedBottomRight, topRight);
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QMatrix3x3 identityMatrix = QOpenGLTextureBlitter::sourceTransform(rect, rect.size().toSize(), QOpenGLTextureBlitter::OriginBottomLeft);
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TestVertex3D notFlippedTopLeft = identityMatrix * topLeft;
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QCOMPARE(notFlippedTopLeft, topLeft);
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TestVertex3D notFlippedBottomLeft = identityMatrix * bottomLeft;
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QCOMPARE(notFlippedBottomLeft, bottomLeft);
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TestVertex3D notFlippedTopRight = identityMatrix * topRight;
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QCOMPARE(notFlippedTopRight, topRight);
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TestVertex3D notFlippedBottomRight = identityMatrix * bottomRight;
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QCOMPARE(notFlippedBottomRight, bottomRight);
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}
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void tst_QOpenGL::textureblitterPartOriginBottomLeftSourceRectTransform()
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{
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TestVertex3D topLeft(uv_top_left);
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TestVertex3D bottomLeft(uv_bottom_left);
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TestVertex3D topRight(uv_top_right);
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TestVertex3D bottomRight(uv_bottom_right);
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QRectF sourceRect(50,200,200,200);
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QSize textureSize(400,400);
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QMatrix3x3 sourceMatrix = QOpenGLTextureBlitter::sourceTransform(sourceRect, textureSize, QOpenGLTextureBlitter::OriginBottomLeft);
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const float x_point_ratio = sourceRect.topLeft().x() / textureSize.width();
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const float y_point_ratio = sourceRect.topLeft().y() / textureSize.height();
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const float width_ratio = sourceRect.width() / textureSize.width();
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const float height_ratio = sourceRect.height() / textureSize.height();
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TestVertex3D uvTopLeft = sourceMatrix * topLeft;
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const float expected_top_left[] = { x_point_ratio, y_point_ratio + height_ratio, 1 };
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TestVertex3D expectedTopLeft(expected_top_left);
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QCOMPARE(uvTopLeft, expectedTopLeft);
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TestVertex3D uvBottomLeft = sourceMatrix * bottomLeft;
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const float expected_bottom_left[] = { x_point_ratio, y_point_ratio, 1 };
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TestVertex3D expectedBottomLeft(expected_bottom_left);
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QCOMPARE(uvBottomLeft, expectedBottomLeft);
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TestVertex3D uvTopRight = sourceMatrix * topRight;
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const float expected_top_right[] = { x_point_ratio + width_ratio, y_point_ratio + height_ratio, 1 };
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TestVertex3D expectedTopRight(expected_top_right);
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QCOMPARE(uvTopRight, expectedTopRight);
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TestVertex3D uvBottomRight = sourceMatrix * bottomRight;
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const float expected_bottom_right[] = { x_point_ratio + width_ratio, y_point_ratio, 1 };
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TestVertex3D expectedBottomRight(expected_bottom_right);
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QCOMPARE(uvBottomRight, expectedBottomRight);
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}
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void tst_QOpenGL::textureblitterPartOriginTopLeftSourceRectTransform()
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{
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TestVertex3D topLeft(uv_top_left);
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TestVertex3D bottomLeft(uv_bottom_left);
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TestVertex3D topRight(uv_top_right);
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TestVertex3D bottomRight(uv_bottom_right);
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QRectF sourceRect(50,190,170,170);
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QSize textureSize(400,400);
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QMatrix3x3 sourceMatrix = QOpenGLTextureBlitter::sourceTransform(sourceRect, textureSize, QOpenGLTextureBlitter::OriginTopLeft);
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const float x_point_ratio = sourceRect.topLeft().x() / textureSize.width();
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const float y_point_ratio = sourceRect.topLeft().y() / textureSize.height();
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const float width_ratio = sourceRect.width() / textureSize.width();
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const float height_ratio = sourceRect.height() / textureSize.height();
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TestVertex3D uvTopLeft = sourceMatrix * topLeft;
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const float expected_top_left[] = { x_point_ratio, 1 - y_point_ratio - height_ratio, 1 };
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TestVertex3D expectedTopLeft(expected_top_left);
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QVERIFY(q_fuzzy_compare(uvTopLeft, expectedTopLeft));
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TestVertex3D uvBottomLeft = sourceMatrix * bottomLeft;
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const float expected_bottom_left[] = { x_point_ratio, 1 - y_point_ratio, 1 };
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TestVertex3D expectedBottomLeft(expected_bottom_left);
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QVERIFY(q_fuzzy_compare(uvBottomLeft, expectedBottomLeft));
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TestVertex3D uvTopRight = sourceMatrix * topRight;
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const float expected_top_right[] = { x_point_ratio + width_ratio, 1 - y_point_ratio - height_ratio, 1 };
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TestVertex3D expectedTopRight(expected_top_right);
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QVERIFY(q_fuzzy_compare(uvTopRight, expectedTopRight));
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TestVertex3D uvBottomRight = sourceMatrix * bottomRight;
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const float expected_bottom_right[] = { x_point_ratio + width_ratio, 1 - y_point_ratio, 1 };
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TestVertex3D expectedBottomRight(expected_bottom_right);
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QVERIFY(q_fuzzy_compare(uvBottomRight, expectedBottomRight));
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}
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void tst_QOpenGL::textureblitterFullTargetRectTransform()
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{
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QVector4D topLeft(-1.f, 1.f, 0.f, 1.f);
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QVector4D bottomLeft(-1.f, -1.f, 0.f, 1.f);
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QVector4D topRight(1.f, 1.f, 0.f, 1.f);
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QVector4D bottomRight(1.f, -1.f, 0.f, 1.f);
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QRectF rect(0,0,200,200);
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QMatrix4x4 targetMatrix = QOpenGLTextureBlitter::targetTransform(rect,rect.toRect());
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QVector4D translatedTopLeft = targetMatrix * topLeft;
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QCOMPARE(translatedTopLeft, topLeft);
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QVector4D translatedBottomLeft = targetMatrix * bottomLeft;
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QCOMPARE(translatedBottomLeft, bottomLeft);
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QVector4D translatedTopRight = targetMatrix * topRight;
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QCOMPARE(translatedTopRight, topRight);
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QVector4D translatedBottomRight = targetMatrix * bottomRight;
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QCOMPARE(translatedBottomRight, bottomRight);
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}
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void tst_QOpenGL::textureblitterPartTargetRectTransform()
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{
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QVector4D topLeft(-1.f, 1.f, 0.f, 1.f);
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QVector4D bottomLeft(-1.f, -1.f, 0.f, 1.f);
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QVector4D topRight(1.f, 1.f, 0.f, 1.f);
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QVector4D bottomRight(1.f, -1.f, 0.f, 1.f);
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QRectF targetRect(50,50,200,200);
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QRect viewport(0,0,400,400);
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//multiply by 2 since coordinate system goes from -1 -> 1;
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qreal x_point_ratio = (50. / 400.) * 2;
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qreal y_point_ratio = (50. / 400.) * 2;
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qreal width_ratio = (200. / 400.) * 2;
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qreal height_ratio = (200. / 400.) * 2;
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QMatrix4x4 targetMatrix = QOpenGLTextureBlitter::targetTransform(targetRect, viewport);
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QVector4D targetTopLeft = targetMatrix * topLeft;
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QVector4D expectedTopLeft(-1 + x_point_ratio, 1 - y_point_ratio, .0, 1.0);
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QCOMPARE(targetTopLeft, expectedTopLeft);
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QVector4D targetBottomLeft = targetMatrix * bottomLeft;
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QVector4D expectedBottomLeft(-1 + x_point_ratio, 1 - y_point_ratio - height_ratio, 0.0, 1.0);
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QCOMPARE(targetBottomLeft, expectedBottomLeft);
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QVector4D targetTopRight = targetMatrix * topRight;
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QVector4D expectedTopRight(-1 + x_point_ratio + width_ratio, 1 - y_point_ratio, 0.0, 1.0);
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QCOMPARE(targetTopRight, expectedTopRight);
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QVector4D targetBottomRight = targetMatrix * bottomRight;
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QVector4D expectedBottomRight(-1 + x_point_ratio + width_ratio, 1 - y_point_ratio - height_ratio, 0.0, 1.0);
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QCOMPARE(targetBottomRight, expectedBottomRight);
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}
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QTEST_MAIN(tst_QOpenGL)
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