libraries/libdraco: Added (3D data compression).

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/libraries/libdraco/gltf_decoder_cc.patch b/libraries/libdraco/gltf_decoder_cc.patch
new file mode 100644
index 0000000000..a2874df390
--- /dev/null
+++ b/libraries/libdraco/gltf_decoder_cc.patch
@@ -0,0 +1,23 @@
+--- ./src/draco/io/gltf_decoder.cc
++++ ./src/draco/io/gltf_decoder.cc
+@@ -427,6 +427,12 @@
+   return WriteBufferToFile(contents.data(), contents.size(), filepath);
+ }
+ 
++bool GetFileSizeInBytes(size_t *out, std::string * /*err*/,
++                     const std::string &filepath, void * /*user_data*/) {
++  *out = GetFileSize(filepath);
++  return true;
++}
++
+ }  // namespace
+ 
+ GltfDecoder::GltfDecoder()
+@@ -486,6 +492,7 @@
+       // TinyGLTF's ExpandFilePath does not do filesystem i/o, so it's safe to
+       // use in all environments.
+       &tinygltf::ExpandFilePath, &ReadWholeFile, &WriteWholeFile,
++      &GetFileSizeInBytes,
+       reinterpret_cast<void *>(input_files)};
+ 
+   loader.SetFsCallbacks(fs_callbacks);