Difference between revisions of "Texture.new"
From GiderosMobile
(Texture to TextureBase) |
|||
| (16 intermediate revisions by 3 users not shown) | |||
| Line 1: | Line 1: | ||
__NOTOC__ | __NOTOC__ | ||
| − | + | '''Available since:''' Gideros 2011.6<br/> | |
| − | ''' | + | '''Class:''' [[Texture]]<br/> |
| − | ''' | + | |
| − | === | + | === Description === |
| − | + | Creates a new Texture object. | |
| − | Creates a new Texture object. | + | <syntaxhighlight lang="lua"> |
| − | < | + | Texture.new(filename,filtering,options) |
| − | + | </syntaxhighlight> | |
| − | + | ||
| − | </ | + | === Parameters === |
| − | === | + | '''filename''': (string) the name of the texture file to be loaded<br/> |
| − | '''filename''': (string) | + | '''filtering''': (boolean, default = false) whether or not the texture is filtered, that is smoothing the image (''blurry'') '''optional'''<br/> |
| − | '''filtering''': (boolean, default = false) | + | '''options''': (table) a table that specifies optional parameters '''optional'''. The following options are supported:<br/> |
| − | '''options''': (table | + | |
| − | === | + | * '''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]]''' |
| − | local texture = Texture.new( | + | * '''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 === | ||
| + | <syntaxhighlight lang="lua"> | ||
| + | -- 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}) | ||
| + | </syntaxhighlight> | ||
| + | |||
| + | |||
| + | ---- | ||
| + | |||
__NOTOC__ | __NOTOC__ | ||
| − | + | '''Available since:''' Gideros 2016.08<br/> | |
| − | ''' | + | '''Class:''' [[Texture]]<br/> |
| − | ''' | + | |
| − | === | + | === Description === |
| − | + | Creates a texture from pixel data. | |
| − | < | + | <syntaxhighlight lang="lua"> |
| − | + | Texture.new(pixels,width,height,filtering,options) | |
| − | </ | + | </syntaxhighlight> |
| − | === | + | |
| − | '''pixels''': (string) | + | === Parameters === |
| − | '''width''': (number) | + | '''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<br/> |
| − | '''height''': (number) | + | '''width''': (number) width of the texture to create<br/> |
| − | '''filtering''': (boolean, default | + | '''height''': (number) height of the texture to create<br/> |
| − | '''options''': (table | + | '''filtering''': (boolean, default = false) indicates that the texture should be filtered, that is smoothing the image (''blurry'') '''optional'''<br/> |
| − | === | + | '''options''': (table) a table that specifies optional parameters '''optional'''. The following options are supported:<br/> |
| − | ''' | + | |
| − | < | + | * '''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 === | ||
| + | <syntaxhighlight lang="lua"> | ||
| + | -- 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}) | ||
| + | </syntaxhighlight> | ||
| + | |||
| + | {{Texture}} | ||
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})
