Difference between revisions of "TextureType"
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− | The <code>Texel</code> function can be used to sample from all types of textures. <code>Texel</code> is recommended instead of <code>texture2D</code>, <code>textureCube</code> etc., because the latter do not work across all versions of GLSL supported by LÖVE, whereas Texel does (GLSL 3 removed <code>texture2D</code> and added a generic <code>texture</code> function). | + | The <code>Texel</code> shader function can be used to sample from all types of textures in a shader. <code>Texel</code> is recommended instead of <code>texture2D</code>, <code>textureCube</code> etc., because the latter do not work across all versions of GLSL supported by LÖVE, whereas Texel does (GLSL 3 removed <code>texture2D</code> and added a generic <code>texture</code> function). |
Revision as of 19:49, 21 January 2018
Available since LÖVE 0.11.0 |
This enum is not supported in earlier versions. |
Types of textures (2D, cubemap, etc.)
Contents
Constants
- 2d
- Regular 2D texture with width and height.
- array
- Several same-size 2D textures organized into a single object. Similar to a texture atlas / sprite sheet, but avoids sprite bleeding and other issues.
- cube
- Cubemap texture with 6 faces. Requires a custom shader (and Shader:send) to use. Sampling from a cube texture in a shader takes a 3D direction vector instead of a texture coordinate.
- volume
- 3D texture with width, height, and depth. Requires a custom shader to use. Volume textures can have texture filtering applied along the 3rd axis.
Notes
Array textures can be rendered with love.graphics.drawLayer, with love.graphics.draw and a Quad via Quad:setLayer, or by sending it to a custom Shader. When getting the pixels of a layer of an Array Texture in a shader, a third texture coordinate component is used to choose which layer to get.
When using a custom Shader, each texture type has a different name for its GLSL type.
Image
(orsampler2D
) is a 2D texture.ArrayImage
(orsampler2DArray
) is an array texture.CubeImage
(orsamplerCube
) is a cubemap texture.VolumeImage
(orsampler3D
) is a volume texture.
The Texel
shader function can be used to sample from all types of textures in a shader. Texel
is recommended instead of texture2D
, textureCube
etc., because the latter do not work across all versions of GLSL supported by LÖVE, whereas Texel does (GLSL 3 removed texture2D
and added a generic texture
function).
Each texture type has a different maximum size on a user's system. Use love.graphics.getSystemLimits to check.
Not all texture types are supported by all systems. love.graphics.getTextureTypes can check for support.
2D and cube texture types are supported everywhere. Array textures require a system that supports OpenGL 3 or OpenGL ES 3. Volume / 3D textures require a system that supports OpenGL 2 or OpenGL ES 3.
See Also
- love.graphics
- Texture
- Texture:getTextureType
- love.graphics.newImage
- love.graphics.newArrayImage
- love.graphics.newCubeImage
- love.graphics.newVolumeImage
- love.graphics.newCanvas
- love.graphics.drawLayer
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