diff options
Diffstat (limited to 'src/gui/math3d/qmatrix4x4.h')
| -rw-r--r-- | src/gui/math3d/qmatrix4x4.h | 36 |
1 files changed, 27 insertions, 9 deletions
diff --git a/src/gui/math3d/qmatrix4x4.h b/src/gui/math3d/qmatrix4x4.h index 2ba274d4517..2a801905ce0 100644 --- a/src/gui/math3d/qmatrix4x4.h +++ b/src/gui/math3d/qmatrix4x4.h @@ -564,6 +564,7 @@ inline bool QMatrix4x4::operator!=(const QMatrix4x4& other) const inline QMatrix4x4 operator+(const QMatrix4x4& m1, const QMatrix4x4& m2) { + Q_DECL_UNINITIALIZED QMatrix4x4 m(Qt::Uninitialized); m.m[0][0] = m1.m[0][0] + m2.m[0][0]; m.m[0][1] = m1.m[0][1] + m2.m[0][1]; @@ -586,6 +587,7 @@ inline QMatrix4x4 operator+(const QMatrix4x4& m1, const QMatrix4x4& m2) inline QMatrix4x4 operator-(const QMatrix4x4& m1, const QMatrix4x4& m2) { + Q_DECL_UNINITIALIZED QMatrix4x4 m(Qt::Uninitialized); m.m[0][0] = m1.m[0][0] - m2.m[0][0]; m.m[0][1] = m1.m[0][1] - m2.m[0][1]; @@ -608,21 +610,34 @@ inline QMatrix4x4 operator-(const QMatrix4x4& m1, const QMatrix4x4& m2) inline QMatrix4x4 operator*(const QMatrix4x4& m1, const QMatrix4x4& m2) { + Q_DECL_UNINITIALIZED + QMatrix4x4 m(Qt::Uninitialized); QMatrix4x4::Flags flagBits = m1.flagBits | m2.flagBits; if (flagBits.toInt() < QMatrix4x4::Rotation2D) { - QMatrix4x4 m = m1; - m.m[3][0] += m.m[0][0] * m2.m[3][0]; - m.m[3][1] += m.m[1][1] * m2.m[3][1]; - m.m[3][2] += m.m[2][2] * m2.m[3][2]; - - m.m[0][0] *= m2.m[0][0]; - m.m[1][1] *= m2.m[1][1]; - m.m[2][2] *= m2.m[2][2]; + // Scale | Translation + m.m[0][0] = m1.m[0][0] * m2.m[0][0]; + m.m[0][1] = 0.0f; + m.m[0][2] = 0.0f; + m.m[0][3] = 0.0f; + + m.m[1][0] = 0.0f; + m.m[1][1] = m1.m[1][1] * m2.m[1][1]; + m.m[1][2] = 0.0f; + m.m[1][3] = 0.0f; + + m.m[2][0] = 0.0f; + m.m[2][1] = 0.0f; + m.m[2][2] = m1.m[2][2] * m2.m[2][2]; + m.m[2][3] = 0.0f; + + m.m[3][0] = m1.m[3][0] + m1.m[0][0] * m2.m[3][0]; + m.m[3][1] = m1.m[3][1] + m1.m[1][1] * m2.m[3][1]; + m.m[3][2] = m1.m[3][2] + m1.m[2][2] * m2.m[3][2]; + m.m[3][3] = 1.0f; m.flagBits = flagBits; return m; } - QMatrix4x4 m(Qt::Uninitialized); m.m[0][0] = m1.m[0][0] * m2.m[0][0] + m1.m[1][0] * m2.m[0][1] + m1.m[2][0] * m2.m[0][2] @@ -843,6 +858,7 @@ inline QPointF operator*(const QMatrix4x4& matrix, const QPointF& point) inline QMatrix4x4 operator-(const QMatrix4x4& matrix) { + Q_DECL_UNINITIALIZED QMatrix4x4 m(Qt::Uninitialized); m.m[0][0] = -matrix.m[0][0]; m.m[0][1] = -matrix.m[0][1]; @@ -865,6 +881,7 @@ inline QMatrix4x4 operator-(const QMatrix4x4& matrix) inline QMatrix4x4 operator*(float factor, const QMatrix4x4& matrix) { + Q_DECL_UNINITIALIZED QMatrix4x4 m(Qt::Uninitialized); m.m[0][0] = matrix.m[0][0] * factor; m.m[0][1] = matrix.m[0][1] * factor; @@ -887,6 +904,7 @@ inline QMatrix4x4 operator*(float factor, const QMatrix4x4& matrix) inline QMatrix4x4 operator*(const QMatrix4x4& matrix, float factor) { + Q_DECL_UNINITIALIZED QMatrix4x4 m(Qt::Uninitialized); m.m[0][0] = matrix.m[0][0] * factor; m.m[0][1] = matrix.m[0][1] * factor; |