Drawing UI Texture package

Tool to add drawable RawImage for Unity (using only GPU to improve performance).

How to install package

You can add the package with the new Package Manager from the window menu using the repository address https://github.com/Quokka-Indie-Studio/Drawing-UI-Texture-package.git. (Window -> Package Manager)

Or add the line below in the dependencies block inside the manifest.json

{
   "dependencies": 
   {
       "com.quokkaindiestudio.drawinguitexture":"https://github.com/Quokka-Indie-Studio/Drawing-UI-Texture-package.git"
   }
}

How it works

Add a Drawing UI Texture

First create a new canvas in World Space or in Screen Space - Camera.
Doesn't work with canvas in Screen Space - Overlay render mode.

Add the Draw texture from hiearchy window.

• Brushes - To change brush texture.
• Size - To change brush size.
• Opacity - To change brush opacity.
• Color - To change brush color.
• Type - To change brush mode.
• Draw on tranparency - To allow brush application on alpha texture.
• Resolution - To change image resolution in the Start function.

The different types of brush are pretty straight forward.

• None - To apply color
• Eraser - To erase the drawing
• Negative - To change image color in negative color.
• Additive - To apply color additively.
• Multiply - To multiply color.
• Subtract Alpha - To reduce alpha.
• Add Alpha - To add alpha.

In code

using LS.DrawTexture.Runtime;

private void MyFunction()
{
    DrawTextureUI myDrawTexture = GameObject.FindObjectOfType<DrawTextureUI>();
    
    //To get current texture
    Texture2D myTexture = myDrawTexture.GetTexture2D();
    
    //To reset texture
    myDrawTexture.Clear();
    
    //To change brush texture
    myDrawTexture.IdTexture = 0;
    
    //To change brush size
    myDrawTexture.Size = 0.5f;
    
    //To change brush Opacity
    myDrawTexture.Opacity = 0.01f;
    
    //To change brush mode
    myDrawTexture.Type = DrawTextureUI.BrushType.none;
    
    //To change brush color
    myDrawTexture.Color = new Color(1.0f,1.0f,1.0f,1.0f);
    
    //To allow brush application on alpha texture
    myDrawTexture.DrawOnTransparency = true;
}

Add a new brush

To add a new brush, you have to do a Resources folder and inside it, add the Brushes folder.

The texture must have a white border and the width and height texture have to be the same (for instance 512x512).
WARNING do not generate mip maps.

Other parameters for the texture (Display only at Runtime)

• Clear - To reset texture.
• Save - To save current texture.

Save the current texture in the Textures Saved folder (Assets/Textures Saved/)
After that you have to refresh files to see the folder.

WARNING do not refresh files while the scene is playing.

TO DO

• Add more modes