You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
114 lines
3.6 KiB
114 lines
3.6 KiB
<!DOCTYPE html>
|
|
<html lang="en">
|
|
<head>
|
|
<meta charset="utf-8" />
|
|
<base href="../../../" />
|
|
<script src="page.js"></script>
|
|
<link type="text/css" rel="stylesheet" href="page.css" />
|
|
</head>
|
|
<body>
|
|
[page:Texture] →
|
|
|
|
<h1>[name]</h1>
|
|
|
|
<p class="desc">Creates a texture directly from raw data, width and height.</p>
|
|
|
|
|
|
<h2>Constructor</h2>
|
|
|
|
<h3>[name]( data, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding )</h3>
|
|
<p>
|
|
The data argument must be an [link:https://developer.mozilla.org/en-US/docs/Web/API/ArrayBufferView ArrayBufferView].
|
|
Further parameters correspond to the properties inherited from [page:Texture], where both magFilter and minFilter default to THREE.NearestFilter.
|
|
</p>
|
|
<p>
|
|
The interpretation of the data depends on type and format:
|
|
If the type is THREE.UnsignedByteType, a Uint8Array will be useful for addressing the texel data.
|
|
If the format is THREE.RGBAFormat, data needs four values for one texel; Red, Green, Blue and Alpha (typically the opacity).<br />
|
|
|
|
For the packed types, THREE.UnsignedShort4444Type and THREE.UnsignedShort5551Type all color components of one texel can be addressed as bitfields within an integer element of a Uint16Array.<br />
|
|
|
|
In order to use the types THREE.FloatType and THREE.HalfFloatType, the WebGL implementation must support the respective extensions OES_texture_float and OES_texture_half_float. In order to use THREE.LinearFilter for component-wise, bilinear interpolation of the texels based on these types, the WebGL extensions OES_texture_float_linear or OES_texture_half_float_linear must also be present.
|
|
</p>
|
|
|
|
<h2>Code Example</h2>
|
|
|
|
<code>
|
|
// create a buffer with color data
|
|
|
|
const width = 512;
|
|
const height = 512;
|
|
|
|
const size = width * height;
|
|
const data = new Uint8Array( 4 * size );
|
|
const color = new THREE.Color( 0xffffff );
|
|
|
|
const r = Math.floor( color.r * 255 );
|
|
const g = Math.floor( color.g * 255 );
|
|
const b = Math.floor( color.b * 255 );
|
|
|
|
for ( let i = 0; i < size; i ++ ) {
|
|
|
|
const stride = i * 4;
|
|
|
|
data[ stride ] = r;
|
|
data[ stride + 1 ] = g;
|
|
data[ stride + 2 ] = b;
|
|
data[ stride + 3 ] = 255;
|
|
|
|
}
|
|
|
|
// used the buffer to create a [name]
|
|
|
|
const texture = new THREE.DataTexture( data, width, height );
|
|
texture.needsUpdate = true;
|
|
</code>
|
|
|
|
<h2>Properties</h2>
|
|
|
|
<p>
|
|
See the base [page:Texture Texture] class for common properties.
|
|
</p>
|
|
|
|
<h3>[property:Boolean flipY]</h3>
|
|
<p>
|
|
If set to `true`, the texture is flipped along the vertical axis when uploaded to the GPU. Default is `false`.
|
|
</p>
|
|
|
|
<h3>[property:Boolean generateMipmaps]</h3>
|
|
<p>
|
|
Whether to generate mipmaps (if possible) for a texture. False by default.
|
|
</p>
|
|
|
|
<h3>[property:Image image]</h3>
|
|
<p>
|
|
Overridden with a record type holding data, width and height.
|
|
</p>
|
|
|
|
<h3>[property:Boolean isDataTexture]</h3>
|
|
<p>
|
|
Read-only flag to check if a given object is of type [name].
|
|
</p>
|
|
|
|
<h3>[property:number unpackAlignment]</h3>
|
|
<p>
|
|
1 by default. Specifies the alignment requirements for the start of each pixel row in memory.
|
|
The allowable values are 1 (byte-alignment), 2 (rows aligned to even-numbered bytes),
|
|
4 (word-alignment), and 8 (rows start on double-word boundaries).
|
|
See [link:http://www.khronos.org/opengles/sdk/docs/man/xhtml/glPixelStorei.xml glPixelStorei]
|
|
for more information.
|
|
</p>
|
|
|
|
<h2>Methods</h2>
|
|
|
|
<p>
|
|
See the base [page:Texture Texture] class for common methods.
|
|
</p>
|
|
|
|
<h2>Source</h2>
|
|
|
|
<p>
|
|
[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
|
|
</p>
|
|
</body>
|
|
</html>
|
|
|