---
name: "coin401"
section: "3"
platform: "linux"
package: "coin"
version: "1:4.0.10-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/coin401"
---

# coin401(3)

New Features in Coin v4.0.1 This is a bugfix release. This is a brief summary of the new features in Coin v4.0.1: Bug fixes:

## NAME

coin401 - New Features in Coin v4.0.1

This is a bugfix release.

This is a brief summary of the new features in Coin v4.0.1:

- •

  Version control system has been changed from Mercurial to Git.

- •

  Home of Coin3d organization has been changed from https://bitbucket.org/Coin3D to https://github.com/coin3d due to Bitbucket ending Mercurial support.

- •

  Added CI for macOS, Windows, and Ubuntu per GitHub actions to repository

- •

  Added checksum generation to AppVeyor CI

- •

  Added macOS images to AppVeyor CI

- •

  The expat sources under coin/src/xml/expat were updated to version 2.2.10.

- •

  Introduced new COIN\_DEBUG\_CHECK\_THREAD option.

- •

  Introduced COIN\_GLX\_PIXMAP\_DIRECT\_RENDERING environment variable to force direct rendering of offscreen contexts.

Bug fixes:

- •

  Optimized mutex debugging.

- •

  Fix integer division issue.

- •

  Fix material and normal handling for indexed line set.

- •

  Fix resource lookup when HAVE\_MULTIPLE\_VERSION is enabled in CMake build script.

- •

  Fixed an transparency issue for indexed lineset.

- •

  Move constant data to read only data segment to reduce size of shared object library (see https://randomascii.wordpress.com/2017/01/08/add-a-const-here-delete-a-const-there)

- •

  Fixed numerous issues detected by static code analysis.

- •

  Fix linking with system installation of expat.

- •

  Fix broken ABI version on .so link.

- •

  Do not run programs for determining hash quoting to support cross compiling.

- •

  Fix testing for maximum texture size.

- •

  Removed obsolete ATI driver issue check. Do not check for ATI driver issues fixed long time ago (see issue #412). We added environment variable COIN\_GLGLUE\_DISABLE\_VBO\_IN\_DISPLAYLIST for compatibility with the old behaviour.

- •

  Fix underlinking against X11 in CMake build scripts.

- •

  Set GLSL shader version to 120 to avoid rendering issues with fog.

- •

  Enable non power of two textures for ATi and Intel by default. For those who are in need of the old behavior, an environment variable COIN\_GLGLUE\_DISABLE\_NON\_POWER\_OF\_TWO\_TEXTURES has been added.

- •

  Do not disable VBO rendering for Intel graphics drivers anymore. Recent Intel graphics hardware is known to properly support VBO rendering. So we remove the code for disabling it by default.

- •

  Fix GLX glue trying to use NULL display, i.e. when a unix platform has a non-GLX context: usually Wayland, but also might be offscreen or maybe EGL-X11.

- •

  Fix operator arguments on some base types to use const references rather than copies.

- •

  Fixed incorrect rendering of **SoFaceSet**. Conditions when to render as VertexArrayObject were not properly checked.

- •

  Fixed incorrect line ending handling for Windows CR/LF.

- •

  Fixed incorrect closest point calculation for bounding boxes.

- •

  Applied some distribution patches from Fedora, Rosa, and Gentoo.

- •

  Added some class documentation and fixed numerous documentation issues.

- •

  cpack.d was made optional and disabled by default (add -DCOIN\_USE\_CPACK=ON to the cmake commandline to enable it).

- •

  Reference line for text rendered with the built-in default font was changed (before: descender line, now: base line). Thus text rendered with default font will appear a few pixels lower than before, but now consistent with text using non-default fonts. (see https://github.com/coin3d/coin/pull/368)

- •

  Fixed crash when call to cc\_flww32\_get\_bitmap() failed.