itexture->lock()

[Klunk]

when using this to copy from one texture to another, if using any mipmapLevel other than zero the copied data comes out upside down and mirrored.

[Klunk]

in fact no copying is needed

Code: Select all

        
        driver->setTextureCreationFlag( ETCF_CREATE_MIP_MAPS,true);
        ITexture* detailMap = driver->getTexture(YOUR_TEXTURE_NAME_HERE);
        unsigned int* sdata = (unsigned int*)detailMap->lock(false,2);
        detailMap->unlock();
 

will mirror and flip the map at mip level 2

this is in opengl btw

[Mel]

I had some similar troubles when i tried to perform some postproduction using OpenGL without shaders. For some reason, Open GL flips the textures and it seems it is the way GL works, not Irrlicht.

http://irrlicht.sourceforge.net/forum/v ... =9&t=39022

[Klunk]

i think in this case it's an irrlicht issue, if you change index of the lock to 0, it works fine.

[hybrid]

Do you use an Intel gfx card? Please check if GL_MESA_pack_invert is supported by your card. Could be that this extension only works for topmost texture level.

[Klunk]

no it's an nvidia 8800 GTS, whether it supports it I have no idea,

[hybrid]

Hmm, don't think so. So I'll have to extend the test case to see for myself.

[Nadro]

As I remember itexture->lock() doesn't work on AMD Radeon cards, when we try get level > 0, but this isn't Irrlicht issue, but drivers I think.