[Solved]Loading a texture

Hello yet another silly question. I can load a image in Urho3D but how do I load a texture?

Here is an image.

But a texture doesn’t work and there doesn’t seem to be any way to conver an image to a texture.

This results in no texture returned and the error:

You will need to use Texture2D instead of Texture. See this post for the details.

If you are using materials, you can just put the name of texture into the materials xml, such as the material/stone.xml:

<material>
    <technique name="Techniques/DiffNormalPacked.xml" quality="1" />
    <technique name="Techniques/Diff.xml" quality="0" />
    <texture unit="diffuse" name="Textures/StoneDiffuse.dds" />
    <texture unit="normal" name="Textures/StoneNormal.dds" />
    <parameter name="MatSpecColor" value="0.3 0.3 0.3 16" />
</material>

Just change the textures file to yours.

Then I used something like this to create custom texture on the fly. Although I do still need to use material file of a model.

	// Using some random material to create image that we can use for our painted texture
	auto mat = cache->GetResource<Material>( "Materials/UrhoDecal.xml");

	auto tex = SharedPtr<Texture2D>( new Texture2D(context_));
	tex->SetSize(0, 0, 0, TEXTURE_DYNAMIC);

	mat->SetTexture(TextureUnit(), tex);


	auto img = SharedPtr<Image>(new Image(context_));

	img->SetSize(512, 512, 4);
	img->Clear(Color(1, 1, 1, 1));
	for (int y = 0; y < 128; ++y)
	{
		int x = 0;
		for (; x < 128; ++x)
			img->SetPixel(x, y, Color((float)rand() / RAND_MAX, (float)rand() / RAND_MAX,
				(float)rand() / RAND_MAX, (float)rand() / RAND_MAX));


		for (; x < 256; ++x)
			img->SetPixel(x, y, Color(0.5f, 0.f, 0.f, 1.f ));

		for (; x < 384; ++x)
			img->SetPixel(x, y, Color(0.0f, 0.5f, 0.f, 1.f));

		for (; x < 512; ++x)
			img->SetPixel(x, y, Color(0.3f, 0.3f, 0.8f, 1.f));
	}
	tex->SetData(img, false);

I am not going to lie, I did find the code from internet and modified it, so honestly I have no idea what the TextureUnit is, but it seems to work, which is good enough for me.

Thanks for your help guys! I simply needed to use “Texture2D” instead of “Texture”. It works great. TikariSakari that is useful information about creating textures. (which I probably will need to do later). Thanks!

I have a quick question. I have the following code:

[code] Node* cubeNode = scene_->CreateChild(“Cube”);
cubeNode->SetPosition(Vector3(0,0,0));
StaticModel* boxModelComp = cubeNode->CreateComponent();
boxModelComp->SetModel( cache->GetResource(“Models/Box.mdl”) );

Material* mat = new Material(context_);
mat->SetNumTechniques(1);
mat->SetTechnique(0, cache->GetResource<Technique>("Techniques/Diff.xml") );
mat->SetTexture(TU_DIFFUSE, cache->GetResource<Texture2D>("Textures/UrhoIcon.png"));
boxModelComp->SetMaterial(0, mat);[/code]

Do I need to delete the old default material of the staticmodel component? Am I leaking memory?

Asked and answered here: http://discourse.urho3d.io/t/am-i-leaking-memory-here/931/1