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-rw-r--r--core/src/fpdfapi/fpdf_page/fpdf_page.cpp1
-rw-r--r--core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp2
2 files changed, 3 insertions, 0 deletions
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page.cpp
index 1fef74b99b..7e2492fad7 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page.cpp
@@ -675,6 +675,7 @@ CPDF_PageObjects::CPDF_PageObjects(FX_BOOL bReleaseMembers)
m_Transparency(0),
m_ObjectList(128),
m_bBackgroundAlphaNeeded(FALSE),
+ m_bHasImageMask(FALSE),
m_bReleaseMembers(bReleaseMembers),
m_pParser(nullptr),
m_ParseState(CONTENT_NOT_PARSED) {}
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp
index 865c6b7116..264b6fb36f 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp
@@ -710,6 +710,8 @@ void CPDF_StreamContentParser::Handle_ExecuteXObject() {
CPDF_ImageObject* pObj = AddImage(pXObject, NULL, FALSE);
m_LastImageName = name;
m_pLastImage = pObj->m_pImage;
+ if (!m_pObjectList->m_bHasImageMask)
+ m_pObjectList->m_bHasImageMask = m_pLastImage->IsMask();
} else if (type == "Form") {
AddForm(pXObject);
} else {