draw2DRectangleOutline

Seraph · Post by **Seraph** » Sun Dec 20, 2009 7:34 pm

i have placed this function in the main loop:

driver->draw2DRectangleOutline(rect< s32 >(263,650,415,658),SColor(255, 255, 255, 255));

I don't understand why, during the execution, it changes thickness from 1 to 2 pixels

hybrid · Post by **hybrid** » Sun Dec 20, 2009 11:52 pm

Maybe it's a problem with anti-aliasing settings. Some versions of Irrlicht, together with certain video drivers, tend to render thicker lines instead of anti-aliased lines. You might want to check out a mor recent version of Irrlicht from SVN where these issues should be fixed.

Seraph · Post by **Seraph** » Mon Dec 21, 2009 9:47 am

my version is the 1.6, the last. the video driver is the opengl. It is sufficient to change the video driver? What type of video driver is the best in this case?

hybrid · Post by **hybrid** » Mon Dec 21, 2009 9:22 pm

Since d3d does not do line smoothing without multi-sampling you won't see this in any driver besides OpenGL. Since the 2d material is not configurable in versions prior to 1.7 you need to recompile the engine or wait for 1.6.1. Simply set the anti-aliasing settings in the 2d render mode method to disabled.

Seraph · Post by **Seraph** » Wed Dec 23, 2009 11:10 am

Simply set the anti-aliasing settings in the 2d render mode method to disabled.

I'm sorry but i can't find the correct parameter, what is the function?

hybrid · Post by **hybrid** » Wed Dec 23, 2009 11:36 am

mat.AntiAliasing=video::EAAM_OFF;
It's in COpenGLDriver.cpp, line 2513 for latest 1.6 SVN branch

Seraph · Post by **Seraph** » Wed Dec 23, 2009 12:32 pm

SMaterial mat;
driver->setMaterial(mat);
mat.Thickness=10;
mat.setTexture(0, 0);
mat.Lighting = false;
mat.AntiAliasing=video::EAAM_OFF;
driver->draw2DRectangleOutline(rect< s32 >(263,673,314,681),SColor(255, 255, 255, 255));

the problem is the same. I have set the thickness to 10 but the line is tiny. Why this code are not applied to the displayed RectangleOutline?

hybrid · Post by **hybrid** » Wed Dec 23, 2009 1:41 pm

Eh, no, that won't work. You have to change it in COpenGLDriver.cpp All other settings are simply overwritten by the driver setup code. Changing this from the app is only possible in 1.7 or later.

Seraph · Post by **Seraph** » Wed Dec 23, 2009 2:13 pm

but EAAM_OFF don't mean that it is disabled? i must change this row with what? mat.AntiAliasing=video::DISABLED?

thanks for the help

hybrid · Post by **hybrid** » Thu Dec 24, 2009 12:20 am

You have to change and recompile the engine, not your app. This cannot be altered from outside the engine in 1.6 or earlier.