Difference between revisions of "Texture.new"
From GiderosMobile
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(Texture to TextureBase) |
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* '''transparentColor''': specify which color stands for transparent for formats that don't supply an alpha channel such as JPEG | * '''transparentColor''': specify which color stands for transparent for formats that don't supply an alpha channel such as JPEG | ||
| − | * '''wrap''': how to treat texels outside the texture. Possible values are | + | * '''wrap''': how to treat texels outside the texture. Possible values are TextureBase.CLAMP ('''default''') and TextureBase.REPEAT |
* '''format''': the GPU pixel format for the texture ('''default = RGBA8888''') see '''[[TextureBase]]''' | * '''format''': the GPU pixel format for the texture ('''default = RGBA8888''') see '''[[TextureBase]]''' | ||
* '''extend''': whether the texture should be extended to a power of two size ('''default = true''') | * '''extend''': whether the texture should be extended to a power of two size ('''default = true''') | ||
| Line 51: | Line 51: | ||
* '''transparentColor''': specify which color stands for transparent for formats that don't supply an alpha channel such as JPEG | * '''transparentColor''': specify which color stands for transparent for formats that don't supply an alpha channel such as JPEG | ||
| − | * '''wrap''': how to treat texels outside the texture. Possible values are | + | * '''wrap''': how to treat texels outside the texture. Possible values are TextureBase.CLAMP ('''default''') and TextureBase.REPEAT |
* '''format''': the GPU pixel format for the texture ('''default = RGBA8888''') see '''[[TextureBase]]''' | * '''format''': the GPU pixel format for the texture ('''default = RGBA8888''') see '''[[TextureBase]]''' | ||
* '''extend''': whether the texture should be extended to a power of two size ('''default = true''') | * '''extend''': whether the texture should be extended to a power of two size ('''default = true''') | ||
Latest revision as of 14:30, 20 July 2024
Available since: Gideros 2011.6
Class: Texture
Description
Creates a new Texture object.
Texture.new(filename,filtering,options)
Parameters
filename: (string) the name of the texture file to be loaded
filtering: (boolean, default = false) whether or not the texture is filtered, that is smoothing the image (blurry) optional
options: (table) a table that specifies optional parameters optional. The following options are supported:
- transparentColor: specify which color stands for transparent for formats that don't supply an alpha channel such as JPEG
- wrap: how to treat texels outside the texture. Possible values are TextureBase.CLAMP (default) and TextureBase.REPEAT
- format: the GPU pixel format for the texture (default = RGBA8888) see TextureBase
- extend: whether the texture should be extended to a power of two size (default = true)
- scale: the scale at which this texture was made, if it cannot be determined by a suffix (default = 1)
- rawalpha: disable alpha premultiplication. This can be helpful if one wants to store specific data in the alpha channel of a texture along with a dedicated shader (new 2022.3) (default = false)
- mipmap: enable mipmaping (new 2022.6) (default = false), for more info see https://www.khronos.org/opengl/wiki/Texture#Mip_maps
Examples
-- do not filter and make the color 0xff00ff transparent
local texture = Texture.new("image.jpg", false, {transparentColor = 0xff00ff})
-- enable filtering and repeat the texture
local texture = Texture.new("image.png", true, {wrap = Texture.REPEAT})
Available since: Gideros 2016.08
Class: Texture
Description
Creates a texture from pixel data.
Texture.new(pixels,width,height,filtering,options)
Parameters
pixels: (string) a string containing actual R,G,B,A components of each pixel in the new texture. Each component is stored as a byte. You can pass nil if you don't need to initialize texture content
width: (number) width of the texture to create
height: (number) height of the texture to create
filtering: (boolean, default = false) indicates that the texture should be filtered, that is smoothing the image (blurry) optional
options: (table) a table that specifies optional parameters optional. The following options are supported:
- transparentColor: specify which color stands for transparent for formats that don't supply an alpha channel such as JPEG
- wrap: how to treat texels outside the texture. Possible values are TextureBase.CLAMP (default) and TextureBase.REPEAT
- format: the GPU pixel format for the texture (default = RGBA8888) see TextureBase
- extend: whether the texture should be extended to a power of two size (default = true)
- scale: the scale at which this texture was made, if it cannot be determined by a suffix (default = 1)
- rawalpha: disable alpha premultiplication. This can be helpful if one wants to store specific data in the alpha channel of a texture along with a dedicated shader (new 2022.3) (default = false)
- mipmap: enable mipmaping (new 2022.6) (default = false)
Example
-- Create a 300x400 empty texture. Prevent gideros from extending the texture to the next power of two size
local texture = Texture.new(nil, 300, 400, false, {extend=false})
