DataTexture2DArray.html 3.2 KB

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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <meta charset="utf-8" />
  5. <base href="../../../" />
  6. <script src="list.js"></script>
  7. <script src="page.js"></script>
  8. <link type="text/css" rel="stylesheet" href="page.css" />
  9. </head>
  10. <body>
  11. [page:Texture] &rarr;
  12. <h1>[name]</h1>
  13. <p class="desc">Creates an array of textures directly from raw data, width and height and depth. This type of texture can only be used with a WebGL 2 rendering context.</p>
  14. <h2>Constructor</h2>
  15. <h3>[name]( data, width, height, depth )</h3>
  16. <p>
  17. The data argument must be an [link:https://developer.mozilla.org/en-US/docs/Web/API/ArrayBufferView ArrayBufferView].
  18. The properties inherited from [page:Texture] are the default, except magFilter and minFilter default to THREE.NearestFilter. The properties flipY and generateMipmaps are intially set to false.
  19. </p>
  20. <p>
  21. The interpretation of the data depends on type and format:
  22. If the type is THREE.UnsignedByteType, a Uint8Array will be useful for addressing the texel data.
  23. If the format is THREE.RGBAFormat, data needs four values for one texel; Red, Green, Blue and Alpha (typically the opacity). Similarly, THREE.RGBFormat specifies a format where only three values are used for each texel.<br />
  24. For the packed types, THREE.UnsignedShort4444Type, THREE.UnsignedShort5551Type or THREE.UnsignedShort565Type, all color components of one texel can be addressed as bitfields within an integer element of a Uint16Array.<br />
  25. 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.
  26. </p>
  27. <h2>Code Example</h2>
  28. <p>This creates a [name] where each texture has a different color.</p>
  29. <code>
  30. // create a buffer with color data
  31. var size = width * height;
  32. var data = new Uint8Array( 3 * size * depth );
  33. for ( var i = 0; i < depth; i ++ ) {
  34. var color = new THREE.Color( Math.random(), Math.random(), Math.random() );
  35. var r = Math.floor( color.r * 255 );
  36. var g = Math.floor( color.g * 255 );
  37. var b = Math.floor( color.b * 255 );
  38. for ( var j = 0; j < size; j ++ ) {
  39. var stride = ( i * size + j ) * 3;
  40. data[ stride ] = r;
  41. data[ stride + 1 ] = g;
  42. data[ stride + 2 ] = b;
  43. }
  44. }
  45. // used the buffer to create a [name]
  46. var texture = new THREE.DataTexture2DArray( data, width, height, depth );
  47. texture.format = THREE.RGBFormat;
  48. texture.type = THREE.UnsignedByteType;
  49. </code>
  50. <h2>Examples</h2>
  51. <p>
  52. [example:webgl2_materials_texture2darray WebGL2 / materials / texture2darray]
  53. </p>
  54. <h2>Properties</h2>
  55. <p>
  56. See the base [page:Texture Texture] class for common properties.
  57. </p>
  58. <h3>[property:Image image]</h3>
  59. <p>
  60. Overridden with a record type holding data, width and height and depth.
  61. </p>
  62. <h2>Methods</h2>
  63. <p>
  64. See the base [page:Texture Texture] class for common methods.
  65. </p>
  66. <h2>Source</h2>
  67. <p>
  68. [link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
  69. </p>
  70. </body>
  71. </html>