-------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2016-ac79c0ed4d 2016-10-11 15:41:41.660142 --------------------------------------------------------------------------------
Name : opencsg Product : Fedora 25 Version : 1.4.2 Release : 1.fc25 URL : http://www.opencsg.org/ Summary : Library for Constructive Solid Geometry using OpenGL Description : OpenCSG is a library that does image-based CSG rendering using OpenGL. CSG is short for Constructive Solid Geometry and denotes an approach to model complex 3D-shapes using simpler ones. I.e., two shapes can be combined by taking the union of them, by intersecting them, or by subtracting one shape of the other. The most basic shapes, which are not result of such a CSG operation, are called primitives. Primitives must be solid, i.e., they must have a clearly defined interior and exterior. By construction, a CSG shape is also solid then. Image-based CSG rendering (also z-buffer CSG rendering) is a term that denotes algorithms for rendering CSG shapes without an explicit calculation of the geometric boundary of a CSG shape. Such algorithms use frame-buffer settings of the graphics hardware, e.g., the depth and stencil buffer, to compose CSG shapes. OpenCSG implements a variety of those algorithms, namely the Goldfeather algorithm and the SCS algorithm, both of them in several variants. -------------------------------------------------------------------------------- Update Information: OpenCSG 1.4.2 fixes an issue when the calling application renders into different frame buffer objects subsequently and uses OpenCSG. In this case, when called for the second time with the second FBO active, OpenCSG did not restore that FBO, but the first FBO that was active for a previous call of OpenCSG. This caused, for example, issues in applications rendering into a QOpenGLWidget with Qt 5, such as OpenSCAD. When resizing the OpenGL window, the problem occured, and the OpenGL window was not rendered at all anymore. -------------------------------------------------------------------------------- References: [ 1 ] Bug #1380373 - None https://bugzilla.redhat.com/show_bug.cgi?id=1380373 -------------------------------------------------------------------------------- This update can be installed with the "yum" update program. Use su -c 'yum update opencsg' at the command line. For more information, refer to "Managing Software with yum", available at https://docs.fedoraproject.org/yum/. All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys -------------------------------------------------------------------------------- _______________________________________________ package-announce mailing list -- [email protected] To unsubscribe send an email to [email protected]
