love.graphics.newArrayImage
| Available since LÖVE 0.11.0 |
| This function is not supported in earlier versions. |
|
This function can be slow if it is called repeatedly, such as from love.update or love.draw. If you need to use a specific resource often, create it once and store it somewhere it can be reused! |
An array image / array texture is a single object which contains multiple 'layers' or 'slices' of 2D sub-images. It can be thought of similarly to a texture atlas or sprite sheet, but it doesn't suffer from the same tile / quad bleeding artifacts that texture atlases do – although every sub-image must have the same dimensions.
A specific layer of an array image can be drawn with love.graphics.drawLayer / SpriteBatch:addLayer, or with the Quad variant of love.graphics.draw and Quad:setLayer, or via a custom Shader.
To use an array image in a Shader, it must be declared as a ArrayImage or sampler2DArray type (instead of Image or sampler2D). The Texel(ArrayImage image, vec3 texturecoord) shader function must be used to get pixel colors from a slice of the array image. The vec3 argument contains the texture coordinate in the first two components, and the 0-based slice index in the third component.
Function
Creates an array Image given a different image file for each slice of the resulting array image object.
Synopsis
image = love.graphics.newArrayImage( slices, settings )
Arguments
table slices- A table containing filepaths to images (or File, FileData, ImageData, or CompressedImageData objects), in an array. Each sub-image must have the same dimensions. A table of tables can also be given, where each sub-table contains all mipmap levels for the slice index of that sub-table.
table settings (nil)- Optional table of settings to configure the array image, containing the following fields:
boolean mipmaps (false)- True to make the image use mipmaps, false to disable them. Mipmaps will be automatically generated if the image isn't a compressed texture format.
boolean linear (false)- True to treat the image's pixels as linear instead of sRGB, when gamma correct rendering is enabled. Most images are authored as sRGB.
number dpiscale (1)- The DPI scale to use when drawing the array image and calling getWidth/getHeight.
Returns
Image image- An Array Image object.
Notes
A DPI scale of 2 (double the normal pixel density) will result in the image taking up the same space on-screen as an image with half its pixel dimensions that has a DPI scale of 1. This allows for easily swapping out image assets that take the same space on-screen but have different pixel densities, which makes supporting high-dpi / retina resolution require less code logic.
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