aras-p

// miniexr.cpp - v0.2 - public domain - 2013 Aras Pranckevicius / Unity Technologies
//
// Writes OpenEXR RGB files out of half-precision RGBA or RGB data.
//
// Only tested on Windows (VS2008) and Mac (clang 3.3), little endian.
// Testing status: "works for me".
//
// History:
// 0.2 Source data can be RGB or RGBA now.
// 0.1 Initial release.

aras-p

This short post by Defold people about "empty project build size" comparison between Defold, Unity and Godot (twitter, mastodon) sparked my interest.

It is curious that Godot builds seem to be larger than Unity? Would not have expected that! Anyway.

A way more extensive Unity "web" build comparison and analysics is over at https://github.com/JohannesDeml/UnityWebGL-LoadingTest but here are just my short notes in trying out Unity 6 (6.0.23 - Oct 2024).

Default (3D, URP) template

aras-p

As per gfx-rs/gfx#3716 (comment) :

macOS has a system shader cache at $(getconf DARWIN_USER_CACHE_DIR)/com.apple.metal

On my MacBookPro that is under /var/folders/52/l9z1nqld5yg99tb_s3q6nyhh0000gn/C

• System shaders: /var/folders/52/l9z1nqld5yg99tb_s3q6nyhh0000gn/C/com.apple.metal
• Blender shaders: /var/folders/52/l9z1nqld5yg99tb_s3q6nyhh0000gn/C/org.blenderfoundation

Delete all the folders in there to clear the cache.

aras-p

# windows:
make developer nobuild
cd ..\build_windows_x64_vc17_Release
cmake -DWITH_PYTHON_SAFETY=OFF -DWITH_ASSERT_ABORT=OFF -DWITH_ASSERT_RELEASE=OFF -DWITH_RENDERDOC=ON .

aras-p

# Sizer --min=10 --templatemin=20 --classmin=20 --filemin=30 blender.exe
# using Sizer https://github.com/aras-p/sizer/releases/tag/v0.6.0
# my build is with these settings *OFF*: WITH_CYCLES_OSL, WITH_MATERIALX, and without CUDA/HIP/SYCL/oneAPI bits either.
# Release build config

Functions by size (kilobytes, min 10.00):
  847.90: gpu_shader_create_info_init                                                      gpu_shader_create_info.obj
  141.40: ?initFunctionMap@ColladaParserAutoGen15Private@COLLADASaxFWL15@@AEAAXXZ          COLLADASaxFWLColladaParserAutoGen15PrivateFunctionMap.obj
  123.30: ccl::integrate_surface<16777659>                                                 kernel_sse41.obj
  120.56: ?createFunctionMap__library_effects__allChildren@FunctionMapFactory@COLLADASaxFWL14@@SAAEBV?$map@KUFunctionStruct@?$ParserTemplate@VColladaParserAutoGen14Private@COLLADASaxFWL14@@VColladaParserAutoGen14@2@@GeneratedSaxParser@@U?$less@K@std@@V?$allocator@U?$pair@$$CBKUFunctionStruct@?$ParserTemplate@VColladaParser

aras-p

# Sizer --min=10 --templatemin=20 --classmin=20 --filemin=30 blender.exe
# using Sizer https://github.com/aras-p/sizer/releases/tag/v0.5.0
# my build is with these settings *OFF*: WITH_CYCLES_OSL, WITH_MATERIALX, and without CUDA/HIP/SYCL/oneAPI bits either.
# RelWithDebInfo build config

Warning: PDB file is created with incremental linking, some information might be misleading.
Functions by size (kilobytes, min 10.00):
  847.90: gpu_shader_create_info_init                                                      gpu_shader_create_info.obj
  141.40: ?initFunctionMap@ColladaParserAutoGen15Private@COLLADASaxFWL15@@AEAAXXZ          COLLADASaxFWLColladaParserAutoGen15PrivateFunctionMap.obj
  123.14: ccl::integrate_surface<16777659>                                                 kernel_sse41.obj

aras-p

// just attach this to an empty game object.
// Unity 2021.3: fine
// Unity 2022.3: displays PVRTC_RGBA2 value.
// This happens with enums that contain some Obsolete values.
//
// Looks like a regression since inspector got changed to UIToolkit,
// the code inside UIToolkit enum property field does not handle
// obsolete entries correctly. And compared to IMGUI enum field,
// also loses any potential enum localization.

aras-p

diff --git a/io_scene_fbx/export_fbx_bin.py b/io_scene_fbx/export_fbx_bin.py
index c5cd93a7..f15b3a8a 100644
--- a/io_scene_fbx/export_fbx_bin.py
+++ b/io_scene_fbx/export_fbx_bin.py
@@ -1688,7 +1688,8 @@ def fbx_data_object_elements(root, ob_obj, scene_data):
                             animatable=True, animated=((ob_obj.key, "Lcl Rotation") in scene_data.animated))
     elem_props_template_set(tmpl, props, "p_lcl_scaling", b"Lcl Scaling", scale,
                             animatable=True, animated=((ob_obj.key, "Lcl Scaling") in scene_data.animated))
-    elem_props_template_set(tmpl, props, "p_visibility", b"Visibility", float(not ob_obj.hide))
+    elem_props_template_set(tmpl, props, "p_visibility", b"Visibility", float(not ob_obj.hide),

aras-p

Unity 2022.2.0f1 official release.
I get changes from version control, about a dozen files changed (1 commit), then I open Unity.
It takes about one minute to open the project. The project Assets is 23GB (143k files), it also references
some local packages which is 8GB (63k files). Large part of project assets folder is custom data not used
by Unity's import pipeline ("baked" files for game, under StreamingAssets folder, 13GB, 47k files).

63s: InitializeProject
	62s: InitialRefreshV2
		54s: RefreshInternalV2
			30s: ImportOutOfDateAssets

aras-p

// just going through Data/Managed/UnityEngine.xml in Unity 2023.1.0a22, letters A to C,
// searching for "[]" finds these public APIs that take arrays as parameters. Then next to
// them I looked whether they have a List<> or NativeArray<> variants. Some do have List<>,
// very few have native array. Most of them would be good candidates to take a Span<T>,
// in some cases that might reduce the need for also having "an integer offset and number of items"
// arguments that some (minority) of them do.
//
// This is only A..C so far, or maybe like 10% of the UnityEngine.xml API. UnityEditor.xml probably
// has a ton of similar ones :)