2D Image rendering problem (addImage)

[khamill]

Hi Guys,

I'm putting an image in 2d at the top of a Irrlicht device window. Here is where I create the device:

video::E_DRIVER_TYPE driverType = video::EDT_DIRECT3D9;

device = createDevice(driverType, core::dimension2d<s32>(800, 600));

I'm using virtual IGUIImage* irr::gui::IGUIEnvironment::addImage method

Here is my code to add the image:

img2 = env->addImage(driver->getTexture("../images/logo.jpg"), core::position2d<int>(100,0));

This is a .jpg file, but I've also tried a .bmp file as the image. No difference.

Problem:

The image looks great in Paint Shop Pro 7 create as a 800 X 188 pixel drawing with 16 million colors.

When I load the same image with the above code onto the Irrlicht window, the large letters (72 pt) become jagged and the whole image doesn't look so good. It looks somewhat blocky with a low resolution.

Is the a # of colors problem? What could it be?

thanks

Kevin

[hybrid]

You should use proper texture sizes, i.e. power-of-two dimensions.

[Acki]

I think it's a dimension problem...
Use dimensions in power of 2 !!!
1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024,...

[khamill]

Yep, it was a dimemsion problem.

When I resized the image to 512 X 128 and displayed it again, it looks perfect.

thanks for the quick response.

I think that one took 5 minutes to get an answer. Wow!

thanks again

Kevin

[Acki]

A search on the forum would propably be even faster...