Irrlicht Engine

Hello, guys,
I was using Irrlicht engine rendering 2D-images on iOS platform using OPENGLES2,
While the apps is running many times, the results differs:some times it works fine; but sometimes, the images is just white rectangle with no error while calling glGetError.

I have double checked that the ...

@Nadro,
I was not using irrlicht for game developing, there is a child view rendering the 3D model, while there are many other UI controls below the child view in the app's window.

If the view's size is not changed, it works, however, when it the size is changed, it failed to get the right position ...

Hello, guys,
I am using irrlicht engine in iPhone using opengl es2, when I resize my view, the coordinate seems to be wrong.
Here are the following steps:
1. params.WindowSize = (160,240)
params.WindowId = theView
pDevice = createDeviceEx(params)
pDriver = pDevice->getDriver()
beginScene ...

Thanks for your reply.
After test, I found that Rendering 2-D npot image is due to other problems as you predicted.
However, when I tried to test the example-01, the color of the texture is black, which is apparently wrong.

And the log shows:

Irrlicht Engine version 1.8.0-alpha
Darwin 13.0.0 ...

Hello, Nadro,
I have checked out the latest irrlicht/branches/ogl-es, and I select Opengl ES 2 driver during my iPhone4 application. I tried to load a image texture and draw2DImage, however, the non power of 2 image is displayed only black.
The console prints out the following error message:
Unable ...

Hello. I have changed the code as fluke9 described, however, the console still prints out the following error messages:
Loading shader:COGLES2FixedPipeline.vsh
Loading shader:COGLES2FixedPipeline.fsh

Unable to find uniform : uLightSpecular
Unable to find uniform : uLightDirection
Unable to find ...

Thank you very much, it solved.

Hello, Guys,
I am using Irrlicht Engine 1.7.3 with ogl-es branch.
I tried to run the example-06, in which, it simply loads an jpeg file texture, the renders it in the context.
However, with some jpeg files, the screen is simply blank. I have tested and found that the problems
was related to size of ...