Bug Texture

[Insects]

Hi,

Here is the 'simple' code :

Code: Select all

guienv->addImage(
    driver->getTexture("./top-left.png"), 
    position2d<s32>(0, 0)
);

Here is the original picture :



Here is the bug :



Details : i'm using Irrlicht 1.4.1, with D3D9, the original picture is in png (198*376) without transparency.


Does anyone have an idea about this problem ?

Thanks in advance.
++

[JP]

Basically the texture coords are wrapping round; repeating instead of clamping.

You'll notice the undesired artifacts on the right and bottom sides are actually the same as their opposite sides.

Incidentally you should knows that you're probably better off using texture dimensions which are of a power of two (e.g. 16x32... 512x512 etc) as often a PC's graphics card will upscale them to the nearest power of two anyway which will cause nasty artifacts.

As for solving the wrapping problem i think you can change the texture's wrap mode from repeat to clamp somehow, not sure how tho!

[Insects]

Thanks for the reply

I know that using texture dimensions which are a power of two is much better.. But the fact is that i tried too and got the same problem..

Can you give me an example of how to change a texture's wrap mode ?

thanks again
++

[mk.1]

E_TEXTURE_CLAMP irr::video::SMaterialLayer::TexureWrap

[Insects]

From all i understood, changing a texture's wrap thanks to SMaterialLayer is possible only with an ISceneNode.. But i'm adding a texture from the gui environment so i can't do this stuff..

Anyway i found a 'solution', by setting to true setImageScale of my image. Not that i like scaling but sounds that no choice.

Thanks.