Mode switching for GHOST under X11 #29747

New Issue

Alex Fraser · 2012-01-01T14:28:42+01:00

Alex Fraser commented

2012-01-01 14:28:42 +01:00

%%%This patch adds the ability to change screen resolutions under X Windows (e.g. on GNU/Linux). It is a port of the mode-setting code in Quake 2, which is licensed under the GPL version 2+.

The patch works on my system (Ubuntu 11.10 64-bit, ATI Radeon with fglrx driver) - however, after changing modes, GLSL fails to initialise: calls to glCreateShaderObjectARB return zero. I don't know why this happens. Looking through the Quake 3 source, it doesn't look like anything else is done to fix the GL state. But I'll keep looking.

Attached is the first cut of the patch, and a test scene. By running the scene through blenderplayer, the screen resolution should be set to 640x480 until the player exits. The test scene also has a script that changes the modes mid-game, but that won't work without another patch for the game engine API.%%%

%%%This patch adds the ability to change screen resolutions under X Windows (e.g. on GNU/Linux). It is a port of the mode-setting code in Quake 2, which is licensed under the GPL version 2+. The patch works on my system (Ubuntu 11.10 64-bit, ATI Radeon with fglrx driver) - however, after changing modes, GLSL fails to initialise: calls to glCreateShaderObjectARB return zero. I don't know why this happens. Looking through the Quake 3 source, it doesn't look like anything else is done to fix the GL state. But I'll keep looking. Attached is the first cut of the patch, and a test scene. By running the scene through blenderplayer, the screen resolution should be set to 640x480 until the player exits. The test scene also has a script that changes the modes mid-game, but that won't work without another patch for the game engine API.%%%

Alex Fraser commented

2012-01-01 14:28:42 +01:00

Changed status to: 'Open'

Campbell Barton commented

2012-01-01 15:29:35 +01:00

%%%attached a patch with updates to cmake part.%%%

Alex Fraser commented

2012-01-02 03:06:29 +01:00

%%%x11_modeswitch_2.patch: Minor fix for cmake vidmode library test.

Miraculously, GLSL is working for me now. Maybe I just needed to do a clean rebuild!%%%

%%%x11_modeswitch_2.patch: Minor fix for cmake vidmode library test. Miraculously, GLSL is working for me now. Maybe I just needed to do a clean rebuild!%%%

Alex Fraser commented

2012-01-02 13:27:19 +01:00

%%%Committed with Campbell's approval, r43070. Currently disabled by default; enable by turning on WITH_X11_XF86VMODE in cmake.%%%

Alex Fraser commented

2012-01-02 13:31:49 +01:00

%%%Forgot to mention: thanks to Campbell for helping with CMake, and with testing!%%%

Alex Fraser commented

2012-01-09 13:55:50 +01:00

%%%Adding a new patch (x11_modeswitch_3) that implements the mode-getting functions too. Cam, maybe this fixes the problems you were seeing? Before I implemented these in the SDL version, I was seeing crashes too. This patch applies against r43233 (the previous patch has already been committed to trunk).

This patch also enables the xvidmode extension by default for cmake.

Cam, is it ok to commit this?%%%

%%%Adding a new patch (x11_modeswitch_3) that implements the mode-getting functions too. Cam, maybe this fixes the problems you were seeing? Before I implemented these in the SDL version, I was seeing crashes too. This patch applies against r43233 (the previous patch has already been committed to trunk). This patch also enables the xvidmode extension by default for cmake. Cam, is it ok to commit this?%%%

Alex Fraser commented

2012-01-11 13:29:46 +01:00

%%%Committed, r43286. Thanks, Campbell!%%%

Alex Fraser commented

2012-01-11 13:29:46 +01:00

Changed status from 'Open' to: 'Archived'

Alex Fraser closed this issue

2012-01-11 13:29:46 +01:00

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Mode switching for GHOST under X11 #29747