Krita View3D Plugin

The View3D plugin for Krita provides a "docker" for rendering a JTF mesh using the currently active document as a texture. In addition it provides some very basic backprojection from the rendered view to the texture which can be used to assist with painting on 3D models.

The functionality provided by the current version is:

• View the current document as a texture on a JTF mesh
• Use the mouse buttons to rotate (left), pan (middle) and zoom (right) the view
• Toggle filtering and shading for the model
• Use alt+left button on the model to draw "blobs" on the active layer
• Use "To Image" button to make a new image with the current viewport render (with the model rendered in its own layer with alpha channel)
• Use "From Image" button to backproject the "Paint Here" layer from the last created image with "To Image" to a new layer in the current document

Limitations:

• No undo/redo for image modifications (this is a Krita limitation)
• Due to the way backprojection is done, there is little precision and "gaps" can be created when the projected pixels are too zoomed out
  • To avoid this, zoom in to the area you want to edit on the model as much as possible
• As this is written in Python and it needs to process a lot of pixels in loops, backprojection can be slow
• The OpenGL code needs support for GL_EXT_gpu_shader4 in compatibility contexts
  • This should not be a problem with modern AMD and Nvidia cards but some Intel cards may not provide this
  • Windows users: you must switch from Direct3D 11 / ANGLE renderer to OpenGL renderer in Krita's settings (Settings -> Configure Krita -> Display -> Preferred Renderer) otherwise the plugin will show an error while starting up Krita!

You can watch a YouTube video that shows some basic use.

Download:

• Latest version: view3d20231102.7z (4KB)

To install put the view3d directory inside the pykrita directory in your Krita resources (e.g. ~/.local/share/krita/pykrita). If you are not sure where that is, open the Settings menu, select Manage Resources and then click the Open Resource Folder button in the bottom right corner of the window that will appear.