diff options
| -rw-r--r-- | src/gui/painting/qcolortransfergeneric_p.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/gui/painting/qcolortransfergeneric_p.h b/src/gui/painting/qcolortransfergeneric_p.h index 6caebceb1a4..c2ebd937a44 100644 --- a/src/gui/painting/qcolortransfergeneric_p.h +++ b/src/gui/painting/qcolortransfergeneric_p.h @@ -65,6 +65,7 @@ private: // HLG from linear [0-12] -> [0-1] static float hlgFromLinear(float x) { + x = std::clamp(x, 0.f, 12.f); if (x > 1.f) return m_hlg_a * std::log(x - m_hlg_b) + m_hlg_c; return std::sqrt(x * 0.25f); @@ -73,6 +74,7 @@ private: // HLG to linear [0-1] -> [0-12] static float hlgToLinear(float x) { + x = std::clamp(x, 0.f, 1.f); if (x < 0.5f) return (x * x) * 4.f; return std::exp((x - m_hlg_c) / m_hlg_a) + m_hlg_b; @@ -86,6 +88,7 @@ private: // PQ to linear [0-1] -> [0-64] static float pqToLinear(float e) { + e = std::clamp(e, 0.f, 1.f); // m2-th root of E' const float eRoot = std::pow(e, 1.f / m_pq_m2); // rational transform @@ -99,6 +102,7 @@ private: // PQ from linear [0-64] -> [0-1] static float pqFromLinear(float fd) { + fd = std::clamp(fd, 0.f, 64.f); // scale Fd to Y const float y = fd * (1.f / m_pq_f); // yRoot = Y^m1 -- "root" because m1 is <1 |