Fix T46617 File Output Node seems to save only black images into OpenEXR image data

If the node output had only one layer, it would be detected as singlelayer, and it would miss the blender exr header string

1 files changed, 9 insertions, 2 deletions

diff --git a/source/blender/imbuf/intern/openexr/openexr_api.cpp b/source/blender/imbuf/intern/openexr/openexr_api.cpp
index 63c21827a79..c6140da39a1 100644
--- a/source/blender/imbuf/intern/openexr/openexr_api.cpp
+++ b/source/blender/imbuf/intern/openexr/openexr_api.cpp
@@ -1810,8 +1810,15 @@ static void imb_exr_type_by_channels(ChannelList& channels, StringVector& views,
 	/* will not include empty layer names */
 	channels.layers(layerNames);
 
-	if (views.size() && views[0] != "")
+	if (views.size() && views[0] != "") {
 		*r_multiview = true;
+	}
+	else {
+		*r_singlelayer = false;
+		*r_multilayer = true;
+		*r_multiview = false;
+		return;
+	}
 
 	if (layerNames.size()) {
 		/* if layerNames is not empty, it means at least one layer is non-empty,
@@ -1828,7 +1835,7 @@ static void imb_exr_type_by_channels(ChannelList& channels, StringVector& views,
 					std::string layerName = *i;
 					size_t pos = layerName.rfind ('.');
 
-					if (pos != std::string::npos) {
+					if (pos == std::string::npos) {
 						*r_multilayer = true;
 						*r_singlelayer = false;
 						return;