From: johnmaf <johns@matterandform.net>
Date: Wed, 14 Sep 2016 22:03:52 +0000 (-0400)
Subject: Flip UVs in glTFExporter
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8b3f348d6308591044d9b61ae77f5b99057c08ec;p=platform%2Fupstream%2Fassimp.git

Flip UVs in glTFExporter
---

diff --git a/code/glTFExporter.cpp b/code/glTFExporter.cpp
index e333272..b610e00 100644
--- a/code/glTFExporter.cpp
+++ b/code/glTFExporter.cpp
@@ -291,6 +291,13 @@ void glTFExporter::ExportMeshes()
         if (n) p.attributes.normal.push_back(n);
 
         for (int i = 0; i < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++i) {
+            // Flip UV y coords
+            if (aim -> mNumUVComponents[i] > 1) {
+                for (unsigned int j = 0; j < aim->mNumVertices; ++j) {
+                    aim->mTextureCoords[i][j].y = 1 - aim->mTextureCoords[i][j].y;
+                }
+            }
+
             if (aim->mNumUVComponents[i] > 0) {
                 AttribType::Value type = (aim->mNumUVComponents[i] == 2) ? AttribType::VEC2 : AttribType::VEC3;
                 Ref<Accessor> tc = ExportData(*mAsset, meshId, b, aim->mNumVertices, aim->mTextureCoords[i], AttribType::VEC3, type, ComponentType_FLOAT, true);