ITexture manipulation

[Seven]

looking to manipulate an ITexture and trying to do something like the below.
is this the proper way to do this?

Code: Select all

 
        ITexture* tex = getDriver()->addTexture(dimension2d<u32>(200,200), "somename");
        
        // something like ???????????????????????????
        int pixels[4000] = tex->lock();
 
        for (int x = 0; x < 200; x++)
        for (int y = 0; y < 200; y++)
        {
             // manipulate pixels here, but how to access each pixel?
             pixels[x*y] = some color
        }
        tex->unlock();
 

[mikkis]

Almost right.

Code: Select all

 
 
        ITexture* tex = getDriver()->addTexture(dimension2d<u32>(200,200), "somename");
        
        int *pixels= (int*)tex->lock();
 
        for (int x = 0; x < 200; x++)
        for (int y = 0; y < 200; y++)
        {
             pixels[ y*200 +x] = pixel's color in RGBA format (I think)
        }
        tex->unlock();
 

[CuteAlien]

Still not correct as you also need to regard pitch (lines can internally be longer than width). Take a look at the implementation of CImage::setPixel (in source/Irrlicht/CImage.cpp). It should probably be done that way.

[Seven]

perfect. thanks all.