Irrlicht Engine

Posted: **Sat Oct 29, 2005 9:03 am**

ITexture* texture = driver->getTexture("../../media/irrlichtlogoalpha.tga");
env->addImage(texture,core::position2d<s32>(10,10));

Is it possible to change the size of an image using Irrlicht. That is, instead of just displaying the loaded image, you can actually stretch the image so its larger.

I noticed you could lock the texture, and get the pixels...what sort of structure would i use to get the data so i could modify it ?

Posted: **Sun Oct 30, 2005 2:07 pm**

I'm accessing the texture data in my new fire scene node, you can have a look at it, but basicaly you just have to do this:

Code: Select all

u8* pixels = (u8*) texture->lock();
for (u32 i = 0; i < pixelNum; i++){
    pixels[i * 4] .. //do whatever with the blue component
    pixels[i * 4 + 1] .. //green component
    pixels[i * 4 + 2] .. //red component
    //[i * 4 + 3] could be the alpha value, but I haven't tried it
}

Of course, this just works, when you have the A8R8G8B8 format, but the others should be similar.

Posted: **Sun Oct 30, 2005 3:57 pm**

Cool

Ever played old games like Unreal, and seen how the textures have ripple effects and the pixels undergo filters....this will allow for the same thing

But as for scaling textures, this doesn't really help. Is there a way to give a texture a new array of pixels ?

Irrlicht Engine

2d graphics - can they be scaled ?

2d graphics - can they be scaled ?