Irrlicht Engine

Posted: **Mon Mar 02, 2009 3:59 pm**

Hello,
I want the GUI to draw an image, then I do the following :

	char logoPath[1024];
	sprintf(logoPath, "%s/assets/watermark.png", Path);
	Driver->setTextureCreationFlag (ETCF_CREATE_MIP_MAPS, false);
	Driver->setTextureCreationFlag (ETCF_OPTIMIZED_FOR_QUALITY, true); 
	waterMark = GUI->addImage(Driver->getTexture (logoPath), position2d< s32 >(0,0), true);
	Driver->setTextureCreationFlag (ETCF_CREATE_MIP_MAPS, true);
	Driver->setTextureCreationFlag (ETCF_OPTIMIZED_FOR_QUALITY, true);

My Image looks like that in Photoshop :

But it looks like that in Irrlicht...

It does the same if I remove the setTextureCreationFlags.
Can someone explain me where does it come from please ?

Thanks !

Posted: **Mon Mar 02, 2009 4:03 pm**

Your image's dimensions are not power of two (i.e. 32x32, 64x128 etc)

This means that Irrlicht will scale up your texture to the nearest power of two dimensions (because most graphics cards require this).

The upscaling isn't great quality so basically just make the texture power of two dimensions either by resizing or padding it up and then specifying a source rectangle to read the image from.

Posted: **Mon Mar 02, 2009 4:11 pm**

Thanks a lot, it works like a charm right now !

Irrlicht Engine

[SOLVED] Image quality problem

[SOLVED] Image quality problem