From 6771cc31e1c39928c30ea880e088b407e15e254d Mon Sep 17 00:00:00 2001
From: sam <sam>
Date: Thu, 16 Feb 2017 16:03:55 -0800
Subject: [PATCH] Adding the reading path

---
 libraries/gpu/src/gpu/Texture.h          |  2 +-
 libraries/gpu/src/gpu/Texture_ktx.cpp    | 16 ++++++++++--
 libraries/model/src/model/TextureMap.cpp | 32 +++++++++++++++++++++---
 3 files changed, 43 insertions(+), 7 deletions(-)

diff --git a/libraries/gpu/src/gpu/Texture.h b/libraries/gpu/src/gpu/Texture.h
index fba4c7079f..acf063e365 100755
--- a/libraries/gpu/src/gpu/Texture.h
+++ b/libraries/gpu/src/gpu/Texture.h
@@ -488,7 +488,7 @@ public:
     ExternalUpdates getUpdates() const;
 
     static ktx::KTXUniquePointer serialize(const Texture& texture);
-    static TexturePointer unserialize(const ktx::KTXUniquePointer& srcData);
+    static Texture* unserialize(const ktx::KTXUniquePointer& srcData);
 
 protected:
     const TextureUsageType _usageType;
diff --git a/libraries/gpu/src/gpu/Texture_ktx.cpp b/libraries/gpu/src/gpu/Texture_ktx.cpp
index d06454b933..6380b23903 100644
--- a/libraries/gpu/src/gpu/Texture_ktx.cpp
+++ b/libraries/gpu/src/gpu/Texture_ktx.cpp
@@ -34,9 +34,21 @@ ktx::KTXUniquePointer Texture::serialize(const Texture& texture) {
     auto ktxBuffer = ktx::KTX::create(header, images);
     return ktxBuffer;
 }
-TexturePointer Texture::unserialize(const ktx::KTXUniquePointer& srcData) {
+Texture* Texture::unserialize(const ktx::KTXUniquePointer& srcData) {
+    if (!srcData) {
+        return nullptr;
+    }
 
     const auto& header = *srcData->getHeader();
 
-    return nullptr;
+    Format pixelFormat = Format::COLOR_RGBA_32;
+
+    auto tex = Texture::create2D(pixelFormat, header.getPixelWidth(),  header.getPixelHeight());
+    uint16_t level = 0;
+    for (auto& image : srcData->_images) {
+        tex->assignStoredMip(level, pixelFormat, image._imageSize, image._bytes);
+        level++;
+    }
+
+    return tex;
 }
\ No newline at end of file
diff --git a/libraries/model/src/model/TextureMap.cpp b/libraries/model/src/model/TextureMap.cpp
index cadd985c22..4f8a43412e 100755
--- a/libraries/model/src/model/TextureMap.cpp
+++ b/libraries/model/src/model/TextureMap.cpp
@@ -290,12 +290,36 @@ gpu::Texture* TextureUsage::process2DTextureColorFromImage(const QImage& srcImag
                 filename += std::to_string((size_t) theTexture);
                 filename += ".ktx";
 
-            FILE* file = fopen (filename.c_str(),"wb");
-            if (file != nullptr) {
-                fwrite(theKTX->_storage->data(), 1, theKTX->_storage->size(), file);
-                fclose (file);
+            {
+                FILE* file = fopen (filename.c_str(),"wb");
+                if (file != nullptr) {
+                    fwrite(theKTX->_storage->data(), 1, theKTX->_storage->size(), file);
+                    fclose (file);
+                }
             }
 
+            {
+                FILE* file = fopen (filename.c_str(),"rb");
+                if (file != nullptr) {
+                    // obtain file size:
+                    fseek (file , 0 , SEEK_END);
+                    auto size = ftell(file);
+                    rewind(file);
+
+                    std::unique_ptr<ktx::Storage> storage(new ktx::Storage(size));
+                    fread(storage->_bytes, 1, storage->_size, file);
+                    fclose (file);
+
+                    //then create a new texture out of the ktx
+                    auto theNewTexure = Texture::unserialize(ktx::KTX::create(storage));
+
+                    if (theNewTexure) {
+                        auto srcTexture = theTexture;
+                        theTexture = theNewTexure;
+                        delete srcTexture;
+                    }
+                }
+            }
         }
     }