koobas.hobune.stream
How to change material skybox at runtime ?
Hello !
I have some issues changing the skybox at runtime. Actually, the problem is quite complex (at least for me). What I would like to do : the user can load an image (360° image, such as from street view) and the environment change around him (virtual reality application). In my script, I load the image and create a cubemap from it, make a material containing this cubemap and finally set the new skybox material with this one.
The code, looks like that :
Texture2D skyboxTexture;
Material skyboxMaterial;
public Cubemap cubemap;
private Color[] CubeMapColors;
void Start () {
skyboxMaterial = new Material(Shader.Find("Skybox/Cubemap"));
cubemap = new Cubemap(128, TextureFormat.RGBA32, false);
}
public void OnClickChangeEnvironment()
{
WWW www = new WWW (FileBrowser.OpenSingleFile("Select picture to load", System.Environment.GetFolderPath(System.Environment.SpecialFolder.MyPictures), "jpg"));
skyboxTexture = www.texture;
CubeMapColors = skyboxTexture.GetPixels();
cubemap.SetPixels(CubeMapColors, CubemapFace.PositiveX);
cubemap.Apply();
skyboxMaterial.SetTexture("_Cube", cubemap);
RenderSettings.skybox = skyboxMaterial;
}
What I get, is a new material that has a skybox/cubemap as shader, but with no cubemap. I think it failed to create cubemap... Do you have some idea what is wrong with my code ? I've spent some time to look for a solution, and many people say that it's impossible to do it using script. However, I really need to do it even if the solution is very complex. Thank you very much for your help !
Looks like you can use a custom skybox shader which allows to use a 360 texture. Take a look at the answer to the following question.
So, as result you don't need to convert a 360 texture into the cubemap. You can just assign the texture into the new skybox shader.
Thank you for your answer ! It works perfectly, I just had to use this new shader (added in the project settings/Graphics), then the part of the code changed :
Texture2D skyboxTexture;
Material skyboxMaterial;
void Start () {
skyboxMaterial = new Material(Shader.Find("SkyboxEquirectangular"));
}
public void OnClickChangeEnvironment()
{
WWW www = new WWW (FileBrowser.OpenSingleFile("Select picture to load", System.Environment.GetFolderPath(System.Environment.SpecialFolder.MyPictures), "jpg"));
skyboxTexture = www.texture;
skyboxMaterial.SetTexture("_Tex",skyboxTexture);
RenderSettings.skybox = skyboxMaterial;
DynamicGI.UpdateEnvironment();
}
I put my code in any case someone need to do the same thing. Finally, there was no need of cubemap, which is quite challenging to create by script.
