[graphics/krita] /: Test both the presence of hdr reference white and whether it is a PQ profile.

Git commit 3b07d8f0704c19dc5b889f9a2c80b0feaacb6ab1 by Wolthera van Hövell, on behalf of Wolthera van Hövell tot Westerflier.
Committed on 07/08/2026 at 09:24.
Pushed by woltherav into branch 'master'.

Test both the presence of hdr reference white and whether it is a PQ profile.

M  +2    -2    libs/image/kis_image.cc
M  +1    -1    plugins/impex/libkra/kis_kra_saver.cpp

https://invent.kde.org/graphics/krita/-/commit/3b07d8f0704c19dc5b889f9a2c80b0feaacb6ab1

diff --git a/libs/image/kis_image.cc b/libs/image/kis_image.cc
index 80600376811..67f29370044 100644
--- a/libs/image/kis_image.cc
+++ b/libs/image/kis_image.cc
@@ -2118,7 +2118,7 @@ void KisImage::setColorVolumeInformation(const std::optional<KisColorVolumeInfor
 
 std::optional<double> KisImage::diffuseWhiteLightLevel() const
 {
-    if (m_d->colorSpace->profile()->hdrReferenceWhite()) {
+    if (m_d->colorSpace->profile()->hdrReferenceWhite() && m_d->colorSpace->profile()->getTransferCharacteristics() == TRC_ITU_R_BT_2100_0_PQ) {
         return m_d->colorSpace->profile()->hdrReferenceWhite();
     }
     return m_d->diffuseWhiteLightLevel;
@@ -2126,7 +2126,7 @@ std::optional<double> KisImage::diffuseWhiteLightLevel() const
 
 void KisImage::setDiffuseWhiteLightLevel(const std::optional<double> cdm2)
 {
-    if (m_d->colorSpace->profile()->hdrReferenceWhite()) {
+    if (m_d->colorSpace->profile()->hdrReferenceWhite() && m_d->colorSpace->profile()->getTransferCharacteristics() == TRC_ITU_R_BT_2100_0_PQ) {
         qWarning() << "Cannot set diffuse white on image: profile provides the diffuse white for this image.";
         return;
     }
diff --git a/plugins/impex/libkra/kis_kra_saver.cpp b/plugins/impex/libkra/kis_kra_saver.cpp
index e3c7f379ef2..eccd099e00a 100644
--- a/plugins/impex/libkra/kis_kra_saver.cpp
+++ b/plugins/impex/libkra/kis_kra_saver.cpp
@@ -709,7 +709,7 @@ void KisKraSaver::saveHDRMetadata(QDomDocument &doc, QDomElement &element, KisIm
         return;
     }
     QDomElement hdr = doc.createElement(HDRMETADATA);
-    if (image->diffuseWhiteLightLevel() && !image->colorSpace()->profile()->hdrReferenceWhite()) {
+    if (image->diffuseWhiteLightLevel() && !(image->colorSpace()->profile()->hdrReferenceWhite() && image->colorSpace()->profile()->getTransferCharacteristics() == TRC_ITU_R_BT_2100_0_PQ)) {
         KisDomUtils::saveValue(&hdr, DIFFUSEWHITE, *image->diffuseWhiteLightLevel());
     }
     if (image->relativeContentLightLevelInformation()) {