5 files changed, 21 insertions, 4 deletions
diff --git a/editor/import/editor_import_collada.cpp b/editor/import/editor_import_collada.cpp
index e0a2ea624e..5bf2da9912 100644
--- a/editor/import/editor_import_collada.cpp
+++ b/editor/import/editor_import_collada.cpp
@@ -867,7 +867,7 @@ Error ColladaImport::_create_mesh_surfaces(bool p_optimize, Ref<ArrayMesh> &p_me
 					int normal_pos = (normal_src->stride ? normal_src->stride : 3) * p.indices[src + normal_ofs];
 					ERR_FAIL_INDEX_V(normal_pos, normal_src->array.size(), ERR_INVALID_DATA);
 					vertex.normal = Vector3(normal_src->array[normal_pos + 0], normal_src->array[normal_pos + 1], normal_src->array[normal_pos + 2]);
-					vertex.normal = vertex.normal.snapped(0.001);
+					vertex.normal.snap(Vector3(0.001, 0.001, 0.001));
 
 					if (tangent_src && binormal_src) {
 
@@ -908,12 +908,18 @@ Error ColladaImport::_create_mesh_surfaces(bool p_optimize, Ref<ArrayMesh> &p_me
 #ifndef NO_UP_AXIS_SWAP
 				if (collada.state.up_axis == Vector3::AXIS_Z) {
 
+					Vector3 bn = vertex.normal.cross(vertex.tangent.normal) * vertex.tangent.d;
+
 					SWAP(vertex.vertex.z, vertex.vertex.y);
 					vertex.vertex.z = -vertex.vertex.z;
 					SWAP(vertex.normal.z, vertex.normal.y);
 					vertex.normal.z = -vertex.normal.z;
 					SWAP(vertex.tangent.normal.z, vertex.tangent.normal.y);
 					vertex.tangent.normal.z = -vertex.tangent.normal.z;
+					SWAP(bn.z, bn.y);
+					bn.z = -bn.z;
+
+					vertex.tangent.d = vertex.normal.cross(vertex.tangent.normal).dot(bn) > 0 ? 1 : -1;
 				}
 
 #endif
diff --git a/editor/import/resource_importer_obj.cpp b/editor/import/resource_importer_obj.cpp
index 1c5aa95ff1..4a2f37e319 100644
--- a/editor/import/resource_importer_obj.cpp
+++ b/editor/import/resource_importer_obj.cpp
@@ -188,7 +188,7 @@ Error ResourceImporterOBJ::import(const String &p_source_file, const String &p_s
 
 					Vector3 vertex = vertices[vtx];
 					if (weld_vertices)
-						vertex = vertex.snapped(weld_tolerance);
+						vertex.snap(Vector3(weld_tolerance, weld_tolerance, weld_tolerance));
 					surf_tool->add_vertex(vertex);
 				}
 
diff --git a/editor/import/resource_importer_scene.cpp b/editor/import/resource_importer_scene.cpp
index 2409f6707d..2ccbd36e18 100644
--- a/editor/import/resource_importer_scene.cpp
+++ b/editor/import/resource_importer_scene.cpp
@@ -594,7 +594,7 @@ Node *ResourceImporterScene::_fix_node(Node *p_node, Node *p_root, Map<Ref<Array
 
 			for (int i = 0; i < 3; i++) {
 
-				Vector3 v = f.vertex[i].snapped(0.01);
+				Vector3 v = f.vertex[i].snapped(Vector3(0.01, 0.01, 0.01));
 				if (!points.has(v)) {
 					points.insert(v);
 					center += v;
diff --git a/editor/import/resource_importer_texture.cpp b/editor/import/resource_importer_texture.cpp
index 41b2353ed3..3834e52fab 100644
--- a/editor/import/resource_importer_texture.cpp
+++ b/editor/import/resource_importer_texture.cpp
@@ -202,7 +202,7 @@ void ResourceImporterTexture::get_import_options(List<ImportOption> *r_options,
 	r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "flags/anisotropic"), false));
 	r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "flags/srgb", PROPERTY_HINT_ENUM, "Disable,Enable,Detect"), 2));
 	r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "process/fix_alpha_border"), p_preset != PRESET_3D ? true : false));
-	r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "process/premult_alpha"), true));
+	r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "process/premult_alpha"), false));
 	r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "process/HDR_as_SRGB"), false));
 	r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "stream"), false));
 	r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "size_limit", PROPERTY_HINT_RANGE, "0,4096,1"), 0));
diff --git a/editor/import/resource_importer_wav.cpp b/editor/import/resource_importer_wav.cpp
index 7841baa02e..18c4bed5dd 100644
--- a/editor/import/resource_importer_wav.cpp
+++ b/editor/import/resource_importer_wav.cpp
@@ -153,6 +153,8 @@ Error ResourceImporterWAV::import(const String &p_source_file, const String &p_s
 
 			uint16_t compression_code = file->get_16();
 
+			//Issue: #7755 : Not a bug - usage of other formats (format codes) are unsupported in current importer version.
+			//Consider revision for engine version 3.0
 			if (compression_code != 1) {
 				ERR_PRINT("Format not supported for WAVE file (not PCM). Save WAVE files as uncompressed PCM instead.");
 				break;
@@ -249,6 +251,15 @@ Error ResourceImporterWAV::import(const String &p_source_file, const String &p_s
 		if (chunkID[0] == 's' && chunkID[1] == 'm' && chunkID[2] == 'p' && chunkID[3] == 'l') {
 			//loop point info!
 
+			/**
+			*	Consider exploring next document:
+			*		http://www-mmsp.ece.mcgill.ca/Documents/AudioFormats/WAVE/Docs/RIFFNEW.pdf
+			*	Especially on page:
+			*		16 - 17
+			*	Timestamp:
+			*		22:38 06.07.2017 GMT
+			**/
+
 			for (int i = 0; i < 10; i++)
 				file->get_32(); // i wish to know why should i do this... no doc!