Drawpile is a drawing program that allows share the canvas with other users in real time.

Some feature highlights:

• Shared canvas using the built-in server or a dedicated server

• Record, play back and export drawing sessions

• Simple animation support

• Layers and blending modes

• Text layers

• Supports pressure sensitive Wacom tablets

• Built-in chat

• Supports OpenRaster file format

• Encrypted connections using SSL

• Automatic port forwarding with UPnP

When a GPU renders triangle meshes, various stages of the GPU pipeline have to process vertex and index data. The efficiency of these stages depends on the data you feed them; this library provides algorithms to help optimize meshes for these stages, as well as algorithms to reduce the mesh complexity and storage overhead.

2geom is a C++ library of mathematics for paths, curves, and other geometric calculations. Designed for vector graphics, it tackles Bézier curves, conic sections, paths, intersections, transformations, and basic geometries.

This package contains OpenXR headers, as well as source code and build scripts for the OpenXR loader.

OGRE (Object-Oriented Graphics Rendering Engine) is a scene-oriented, flexible 3D engine written in C++ designed to make it easier and more intuitive for developers to produce applications utilising hardware-accelerated 3D graphics.

GR is a universal framework for cross-platform visualization applications. It offers developers a compact, portable and consistent graphics library for their programs. Applications range from publication quality 2D graphs to the representation of complex 3D scenes. GR is essentially based on an implementation of a GKS. As a self-contained system it can quickly and easily be integrated into existing applications (i.e. using the ctypes mechanism in Python or ccall in Julia).

OpenCSG is a library for rendering Constructive Solid Geometry (CSG) using OpenGL. CSG is an approach for modeling complex 3D-shapes using simpler ones. For example, two shapes can be combined by uniting them, by intersecting them, or by subtracting one shape from the other.

Anti-Grain Geometry is a high quality rendering engine written in C++. It supports sub-pixel resolutions and anti-aliasing. It is also a library for rendering SVG.

Embree is a collection of high-performance ray tracing kernels. Embree is meant to increase performance of photo-realistic rendering applications.

OpenVDB is a C++ library comprising a hierarchical data structure and a large suite of tools for the efficient storage and manipulation of sparse volumetric data discretized on three-dimensional grids. It was developed by DreamWorks Animation for use in volumetric applications typically encountered in feature film production.

Coin is a 3D graphics library with an Application Programming Interface based on the Open Inventor 2.1 API. For those who are not familiar with Open Inventor, it is a scene-graph based retain-mode rendering and model interaction library, written in C++, which has become the de facto standard graphics library for 3D visualization and visual simulation software in the scientific and engineering community.

Blender is a 3D graphics creation suite. It supports the entirety of the 3D pipeline—modeling, rigging, animation, simulation, rendering, compositing and motion tracking, even video editing and game creation. The application can be customized via its API for Python scripting.

AzPainter is a lightweight full color painting application for editing illustrations and images.

Features include:

• Layers

• Many artistic filters

• Good range of selection tools

• Pen pressure support with automatic brush size adjustment

• Support for 16-bit color images with transparency (RGBA)

• Support for image formats like PSD, PNG, JPEG, TIFF, WebP

Alembic is a computer graphics interchange framework. It distills complex, animated scenes into a set of baked geometric results.

Flux is an interface description language used by DirectFB. Fluxcomp compiles .flux files to .cpp or .c files.

MangoHud is a Vulkan and OpenGL overlay for monitoring frames per second (FPS), temperatures, CPU/GPU load and more.

OpenEXR provides the specification and reference implementation of the EXR file format. The purpose of EXR format is to accurately and efficiently represent high-dynamic-range scene-linear image data and associated metadata, with strong support for multi-part, multi-channel use cases.

This package provides a common standard tangent space library used in baking tools to produce normal maps.

Discregrid is a C++ library for the parallel discretization of (preferably smooth) functions on regular grids. It generates a (cubic) polynomial discretization given a box-shaped domain, a grid resolution, and a 3D scalar field. The library can also serialize and deserialize the generated discrete grid, and compute and discretize the signed distance field corresponding to a triangle mesh. The following programs are included with Discregrid:

• GenerateSDF: Computes a discrete (cubic) signed distance field from a triangle mesh in OBJ format.

• DiscreteFieldToBitmap: Generates an image in bitmap format of a two-dimensional slice of a previously computed discretization.

• GenerateDensityMap: Generates a density map from a previously generated discrete signed distance field using the cubic spline kernel.

Skia is a 2D graphics library for drawing text, geometries, and images. It supports:

• 3x3 matrices with perspective

• antialiasing, transparency, filters

• shaders, xfermodes, maskfilters, patheffects

• subpixel text

The pstoedit utility allows translating graphics in the PostScript or PDF (Portable Document Format) formats to various other vector formats such as:

• Tgif (.obj)

• gnuplot

• xfig (.fig)

• Flattened PostScript

• DXF, a CAD (Computed-Aided Design) exchange format

• PIC (for troff/groff)

• MetaPost (for usage with TeX/LaTeX)

• LaTeX2e picture

• GNU Metafile (for use with plotutils/libplot)

• Any format supported by ImageMagick

The purpose of dot2tex is to give graphs generated by Graphviz a more LaTeX friendly look and feel. This is accomplished by converting xdot output from Graphviz to a series of PSTricks or PGF/TikZ commands. This approach allows:

• Typesetting labels with LaTeX, allowing mathematical notation

• Using native PSTricks and PGF/TikZ commands for drawing arrows

• Using backend specific styles to customize the output

This package contains tools for building documentation with Sphinx, Graphviz and LaTeX.

This package provides a Python script to convert the output from many profilers into a dot graph.

It can:

• prune nodes and edges below a certain threshold;

• use an heuristic to propagate time inside mutually recursive functions;

• use color efficiently to draw attention to hot-spots;

• work on any platform where Python and Graphviz is available.