you should be able to address the artifact issue caused by mipmapping when combining textures in Blender for mobile visualization projects. Experiment with different approaches to find the solution that works best for your specific project requirements.

Disable Mipmapping in Blender:
Go to the "Edit" menu in Blender and select "Preferences."
In the Preferences window, navigate to the "System" tab.
Under the "Textures" section, you should see an option for "Mipmaps."
Uncheck or disable the "Mipmaps" option to prevent Blender from automatically generating mipmaps for textures.
Combine Textures in Shader:
Instead of combining the textures in Blender before exporting, you can combine them directly in your shader code within your game engine or rendering software.
Use texture coordinates to blend between the two textures based on the UV mapping of your model.
This approach allows you to control the blending and avoid mipmapping issues that may occur when combining textures in Blender.
Manually Generate Mipmaps:
If disabling mipmapping entirely is not desirable, you can manually generate mipmaps for your textures using external image editing software like Photoshop or GIMP.
Generate mipmaps for each texture at the desired resolution (e.g., 2k) and ensure that they are properly aligned and seamless. scratch geometry dash
Import the manually generated textures back into Blender and use them in your scene without the need for Blender to generate mipmaps automatically.
Optimize Texture Import Settings:
When importing textures into your game engine or rendering software, ensure that you optimize the texture import settings to minimize artifacts caused by mipmapping.
Adjust settings such as texture compression, filtering methods, and mipmapping options to achieve the best visual quality while maintaining mobile compatibility.

Disable Mipmapping in Blender:
Go to the "Edit" menu in Blender and select "Preferences."
In the Preferences window, navigate to the "System" tab.
Under the "Textures" section, you should see an option for "Mipmaps."
Uncheck or disable the "Mipmaps" option to prevent Blender from automatically generating mipmaps for textures.
Combine Textures in Shader:
Instead of combining the textures in Blender before exporting, you can combine them directly in your shader code within your game engine or rendering software.
Use texture coordinates to blend between the two textures based on the UV mapping of your model.
This approach allows you to control the blending and avoid mipmapping issues that may occur when combining textures in Blender.
Manually Generate Mipmaps:
If disabling mipmapping entirely is not desirable, you can manually generate mipmaps for your textures using external image editing software like Photoshop or GIMP.
Generate mipmaps for each texture at the desired resolution (e.g., 2k) and ensure that they are properly aligned and seamless.
Import the manually generated textures back into Blender and use them in your scene without the need for Blender to generate mipmaps automatically.
Optimize Texture Import Settings:
When importing textures into your game engine or rendering software, ensure that you optimize the texture import settings to minimize artifacts caused by mipmapping.
Adjust settings such as texture compression, filtering methods, and mipmapping options to achieve the best visual quality while maintaining mobile compatibility.

Set Up Your Scene:
Open Blender and set up your scene with the car model and any other elements you want to include.
Make sure your car seat mesh is properly UV unwrapped. This will ensure that the texture applies correctly to the model.
Create a New Material:
In the "Shader Editor" workspace, create a new material for the car seat.
Click on the "New" button to create a new material slot, and then click on "New" again to create a new material.
Add a Leather Texture:
Download or create a leather texture that you want to use for the car seat.
In the "Shader Editor," add an "Image Texture" node (Shift + A > Texture > Image Texture).
Open the leather texture image file by clicking on the "Open" button in the Image Texture node.
Connect Nodes:
Connect the "Color" output of the Image Texture node to the "Base Color" input of the "Principled BSDF" shader node.
Adjust the scale and placement of the texture on the car seat by adding a "Texture Coordinate" node (Shift + A > Input > Texture Coordinate) and a "Mapping" node (Shift + A > Vector > Mapping) between the Image Texture node and the "Principled BSDF" node. This will allow you to control the texture mapping.
Adjust Material Properties:
Adjust other material properties such as roughness, metallic, and specular to achieve the desired look of the leather material.

Reply to post of user aj710
Hi I want to apply leather material to a luxury car's seat. Can anyone help me with it? btw I'm new to blender. scratch geometry dash
Thanks in advance.

Set Up Your Scene:
Open Blender and set up your scene with the car model and any other elements you want to include.
Make sure your car seat mesh is properly UV unwrapped. This will ensure that the texture applies correctly to the model.
Create a New Material:
In the "Shader Editor" workspace, create a new material for the car seat.
Click on the "New" button to create a new material slot, and then click on "New" again to create a new material.
Add a Leather Texture:
Download or create a leather texture that you want to use for the car seat.
In the "Shader Editor," add an "Image Texture" node (Shift + A > Texture > Image Texture).
Open the leather texture image file by clicking on the "Open" button in the Image Texture node.
Connect Nodes:
Connect the "Color" output of the Image Texture node to the "Base Color" input of the "Principled BSDF" shader node.
Adjust the scale and placement of the texture on the car seat by adding a "Texture Coordinate" node (Shift + A > Input > Texture Coordinate) and a "Mapping" node (Shift + A > Vector > Mapping) between the Image Texture node and the "Principled BSDF" node. This will allow you to control the texture mapping.
Adjust Material Properties:
Adjust other material properties such as roughness, metallic, and specular to achieve the desired look of the leather material.