[Touch-packages] [Bug 1752844] Re: Line drawing bug in applications using opengl 1
** Description changed: On Ubuntu 16.04.3, as from the update fixing - https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1735594, the line - rendering in applications using Opengl 1 is incorrect. + https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1735594, antialiased + line rendering in applications using Opengl is corrupt. Experienced + using Intel GM45. + + Steps to reproduce: + 1) Create an OpenGL application. + 2) Enable GL_LINE_SMOOTH and set line width to any value below 1.5. + 3) Draw a line (either by shaders or by glBegin). Blender and various games by Kenta Cho (tumiki-figthers, torus-trooper, parsec47, titanion) are affected. ** Summary changed: - Line drawing bug in applications using opengl 1 + Graphical artifacts with antialiased lines in OpenGL -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1752844 Title: Graphical artifacts with antialiased lines in OpenGL Status in mesa package in Ubuntu: Incomplete Bug description: On Ubuntu 16.04.3, as from the update fixing https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1735594, antialiased line rendering in applications using Opengl is corrupt. Experienced using Intel GM45. Steps to reproduce: 1) Create an OpenGL application. 2) Enable GL_LINE_SMOOTH and set line width to any value below 1.5. 3) Draw a line (either by shaders or by glBegin). Blender and various games by Kenta Cho (tumiki-figthers, torus- trooper, parsec47, titanion) are affected. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1752844/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1752844] Re: Line drawing bug in applications using opengl 1
Tested 17.3.3, no success. The artifacts appeared after the #1735594 fix, so they may be specific to i965. My computer graphics indicate "Mobile Intel® GM45 Express Chipset". I found that the game titanion looks as expected when the window is resized to 960x720 or greater. Inspecting the source I found the game adjusts the line width at window resize while the other games keep it at 1 or 2, so I believe the driver is drawing the lines thinner than it should. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1752844 Title: Line drawing bug in applications using opengl 1 Status in mesa package in Ubuntu: Incomplete Bug description: On Ubuntu 16.04.3, as from the update fixing https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1735594, the line rendering in applications using Opengl 1 is incorrect. Blender and various games by Kenta Cho (tumiki-figthers, torus- trooper, parsec47, titanion) are affected. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1752844/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1752844] Re: Line drawing bug in applications using opengl 1
So you mean mesa 17.2.x is buggy? Please test 17.3.3: https://launchpad.net/~ubuntu-x-swat/+archive/ubuntu/updates is the bug hw/driver specific? ** Changed in: mesa (Ubuntu) Status: New => Incomplete ** Changed in: mesa (Ubuntu) Assignee: (unassigned) => Timo Aaltonen (tjaalton) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1752844 Title: Line drawing bug in applications using opengl 1 Status in mesa package in Ubuntu: Incomplete Bug description: On Ubuntu 16.04.3, as from the update fixing https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1735594, the line rendering in applications using Opengl 1 is incorrect. Blender and various games by Kenta Cho (tumiki-figthers, torus- trooper, parsec47, titanion) are affected. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1752844/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
