WebGL2RenderingContext.texImage3D() - Web APIs 编辑

The WebGLRenderingContext.texImage3D() method of the WebGL API specifies a three-dimensional texture image.

Syntax

void gl.texImage3D(target, level, internalformat, width, height, depth, border, format, type, GLintptr offset);

void gl.texImage3D(target, level, internalformat, width, height, depth, border, format, type, HTMLCanvasElement source);
void gl.texImage3D(target, level, internalformat, width, height, depth, border, format, type, HTMLImageElement source);
void gl.texImage3D(target, level, internalformat, width, height, depth, border, format, type, HTMLVideoElement source);
void gl.texImage3D(target, level, internalformat, width, height, depth, border, format, type, ImageBitmap source);
void gl.texImage3D(target, level, internalformat, width, height, depth, border, format, type, ImageData source);
void gl.texImage3D(target, level, internalformat, width, height, depth, border, format, type, ArrayBufferView? srcData);
void gl.texImage3D(target, level, internalformat, width, height, depth, border, format, type, ArrayBufferView srcData, srcOffset);

Parameters

target

A GLenum specifying the binding point (target) of the active texture. Possible values:

• gl.TEXTURE_3D: A three-dimensional texture.
• gl.TEXTURE_2D_ARRAY: A two-dimensional array texture.

level

A GLint specifying the level of detail. Level 0 is the base image level and level n is the nth mipmap reduction level.

internalformat

A GLint specifying the color components in the texture. Possible values:

• gl.ALPHA: Discards the red, green and blue components and reads the alpha component.
• gl.RGB: Discards the alpha components and reads the red, green and blue components.
• gl.RGBA: Red, green, blue and alpha components are read from the color buffer.
• gl.LUMINANCE: Each color component is a luminance component, alpha is 1.0.
• gl.LUMINANCE_ALPHA: Each component is a luminance/alpha component.
• gl.R8
• gl.R16F
• gl.R32F
• gl.R8UI
• gl.RG8
• gl.RG16F
• gl.RG32F
• gl.RGUI
• gl.RGB8
• gl.SRGB8
• gl.RGB565
• gl.R11F_G11F_B10F
• gl.RGB9_E5
• gl.RGB16F
• gl.RGB32F
• gl.RGB8UI
• gl.RGBA8
• gl.SRGB_APLHA8
• gl.RGB5_A1
• gl.RGBA4444
• gl.RGBA16F
• gl.RGBA32F
• gl.RGBA8UI

width

A GLsizei specifying the width of the texture.

height

A GLsizei specifying the height of the texture.

depth

A GLsizei specifying the depth of the texture.

border

A GLint specifying the width of the border. Must be 0.

format

A GLenum specifying the format of the texel data. The correct combinations with internalformat are listed in this table.

type

A GLenum specifying the data type of the texel data. Possible values:

• gl.UNSIGNED_BYTE: 8 bits per channel for gl.RGBA
• gl.UNSIGNED_SHORT_5_6_5: 5 red bits, 6 green bits, 5 blue bits.
• gl.UNSIGNED_SHORT_4_4_4_4: 4 red bits, 4 green bits, 4 blue bits, 4 alpha bits.
• gl.UNSIGNED_SHORT_5_5_5_1: 5 red bits, 5 green bits, 5 blue bits, 1 alpha bit.
• gl.BYTE
• gl.UNSIGNED_SHORT
• gl.SHORT
• gl.UNSIGNED_INT
• gl.INT
• gl.HALF_FLOAT
• gl.FLOAT
• gl.UNSIGNED_INT_2_10_10_10_REV
• gl.UNSIGNED_INT_10F_11F_11F_REV
• gl.UNSIGNED_INT_5_9_9_9_REV
• gl.UNSIGNED_INT_24_8
• gl.FLOAT_32_UNSIGNED_INT_24_8_REV (pixels must be null)

source

One of the following objects can be used as a pixel source for the texture:

• ArrayBufferView,
• ImageBitmap,
• ImageData,
• HTMLImageElement,
• HTMLCanvasElement,
• HTMLVideoElement.

offset

A GLintptr byte offset into the WebGLBuffer's data store. Used to upload data to the currently bound WebGLTexture from the WebGLBuffer bound to the PIXEL_UNPACK_BUFFER target.

Return value

None.

Examples

gl.texImage3D(gl.TEXTURE_3D,
              0,                                          // level
              gl.RGBA,                                    // internalFormat
              1,                                          // width
              1,                                          // height
              1,                                          // depth
              0,                                          // border
              gl.RGBA,                                    // format
              gl.UNSIGNED_BYTE,                           // type
              new Uint8Array([0xff, 0x00, 0x00, 0x00]));  // data

Specifications

Browser compatibility

BCD tables only load in the browser

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

See also

• WebGLRenderingContext.createTexture()
• WebGLRenderingContext.bindTexture()
• WebGLRenderingContext.texSubImage2D()
• WebGLRenderingContext.compressedTexImage2D()
• WebGLRenderingContext.copyTexImage2D()
• WebGLRenderingContext.getTexParameter()