Josh

Ultra can handle multiple layers of transparency, each with lighting, because it uses a type of forward renderer. In order to allow the engine to sort the surfaces back to front, each surface should be a separate model or limb in a model.

I fixed the undo/redo problem for cut and paste operations, on dev channel

Okay, I believe I have this fixed and it will be uploaded in a build tomorrow.
Note that in your example,. the saved state cannot be reloaded unless it was saved during the same session, because your entities are created in code. Entities do not have a unique identifier unless they are either loaded from a map that specifies their UUID, or upon the first call to GetUuid().

The behavior has been changed so this does not happen anymore, in dev channel.

Okay, it's fixed now, for real.

Fixed on dev channel

Fixed on dev channel.

Fixed on dev channel
 

First reported here:
 

Try deleting the "C:\ProgramData\Ultra Engine" folder.

Fixed on dev branch:
#include "UltraEngine.h" using namespace UltraEngine; int main(int argc, const char* argv[]) { auto world = CreateWorld(); auto brush = CreateBoxBrush(world, 1, 1, 1); auto pick = world->Pick(Vec3(-2), Vec3(1, 1.5, 2)); Print(String(pick.normal.x) + ", " + String(pick.normal.y) + ", " + String(pick.normal.z)); return 0; }  

Okay, I updated the dev channel with a build of the editor that uses the calculations from the link above for the parameters and it seems to work. C++ lib and Lua exes are not updated yet, but I think this particular issue is solved.

There is no 2D rendering in Ultra. There is only cameras with orthographic projection:
auto orthocamera = CreateCamera(world, PROJECTION_ORTHOGRAPHIC) orthocamera->SetPosition(float(framebuffer->size.x) * 0.5f, float(framebuffer->size.y) * 0.5f, 0); All cameras that render to a texture buffer are drawn first, then other cameras are rendered, in the order they are created.
You can create a sprite, create a material, get the texture buffer's color texture and apply it to the material, apply the material to the sprite, and place the sprite in front of your final orthographic camera, and that will make the two renders appear onscreen.
The reason it's done this way is because it gives you a lot of power to do anything you want. Post-processing effects can be applied underneath or on top of 2D graphics. You can add 2D graphics in the background. You can make multiple camera renders appear on screen.
This method can be used to control which entities are visible to which cameras:
https://www.ultraengine.com/learn/Entity_SetRenderLayers
The second example here might be helpful:
https://www.ultraengine.com/learn/CreateInterface
 

A feature that I add in.

Delete the "C:\ProgramData\Ultra Engine" folder and try again.

Thanks, it is fixed:
https://github.com/UltraEngine/Documentation/blob/master/Lua/Interface.md
It takes a while for the cached page to update.

See "Synchronization": https://www.ultraengine.com/learn/projectmanager

Easy to fix.

There is a way I can prevent this from happening in the future I think. It will require some research...

Make sure "whole program optimization" is disabled in the VS project settings.

Thank you, will be fixed in next build that goes up.

Parent your widgets to scrollpanel->subpanel.
Call SetArea to set the size of the entire subpanel.
The widget will take care of the rest.

There's an FXAA post-processing effect in the shaders folder:
https://www.ultraengine.com/learn/Camera_AddPostEffect
The VR camera is not accessible yet. I want to get the first version out before going into more depth.

I would expect real-time rendering to two framebuffers to be terrible, because the rendering thread has to stop and sync with the culling thread to handle the changed world it is working with.

There is a deceleration parameter in the entity player input method.

The default channel is 0.9.0, which is a stable build. This means it does not receive updates.
The dev channel receives updates. This means you always have the today's latest build, but it is possible that errors and breaks could occur. See this comment for instructions how to change the channel you are using:
Periodically, different stable version releases will be created and added to the channel list. The next stable release will be 0.9.1, which will coincide with the first release on Steam.
User-created extensions can also add new functionality and interface elements to the editor.