Using texture as background image , IOS env

[gil.hadas]

I am developing IOS application that use the camera picture.
I want to use it as a background image, what is the best way to do it?
All my attempt to load it as not PO2 with addTexture failed.
this code that did work was by converting to PO2:
core::stringc filename(cfilename); //fname is the file from which IImage will be created

IImage *tempImg = driver->createImage(ECF_A8R8G8B8,core::dimension2d<u32>(1024,1024));
IImage *image = driver->createImageFromFile(filename);

image->copyToScaling(tempImg); //I scale the image to 512x512 in this way


if(!driver->findTexture(filename))
m_pTexture = driver->addTexture(filename, tempImg);
else
m_pTexture = driver->getTexture(filename);

any Idea?
Gil

[vivekSivamRP]

use 2d planes.

[vivekSivamRP]

Use 2d planes, it's easy with irrlicth's in built functions,

for ex,

Code: Select all

 
IMesh* twoDMesh = smgr->getGeometryCreator()->createPlaneMesh(tileSize);  // creats 2d plane Mesh
IMeshSceneNode* node = smgr->addMeshSceneNode(twoDMesh); // get sceneNode for mesh
node->setScale(vector3df(1.0));   // fix your scale
node->setMaterialTexture(0,YourBG); /// Finally set ur camera's picture to the node
 

Place the node as your wish.

[gil.hadas]

Thanks for your quick answer,
I tried this code on the Hello world sample but still I don't see the texture.
can you send mea sample code that works for you?
Thanks

[vivekSivamRP]

that's the sample code. it's not possible to load nonPowerOf_2_texture in ios. you convert the texture to power of 2 and set the texture to the 2d plane, then scale the 2d plane as you desired. It's similar to loading nonPowerOf_2_texture.

[gil.hadas]

Thanks, I'll try to crop and scale the texture.
Maybe I can change irrlicht code not to clear the background image of the view.

[gil.hadas]

I Found a solution, in displayInitialize of CIrrDeviceiOS I added
view.layer.opaque = NO;
and in COGLES1Driver::beginScene
I use backbuffer flag as follow :
if (backBuffer)
{
const f32 inv = 1.0f / 255.0f;
glClearColor(color.getRed() * inv, color.getGreen() * inv,
color.getBlue() * inv, color.getAlpha() * inv);

mask |= GL_COLOR_BUFFER_BIT;
}
else
{
mask |= GL_COLOR_BUFFER_BIT;
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);

}
that did the job.