OES_texture_float - Web APIs 编辑
The OES_texture_float
extension is part of the WebGL API and exposes floating-point pixel types for textures.
WebGL extensions are available using the WebGLRenderingContext.getExtension()
method. For more information, see also Using Extensions in the WebGL tutorial.
Availability: This extension is only available to WebGL1 contexts. In WebGL2, the functionality of this extension is available on the WebGL2 context by default.
Extended methods
This extension extends WebGLRenderingContext.texImage2D()
and WebGLRenderingContext.texSubImage2D()
:
- The
type
parameter now acceptsgl.FLOAT
. - The
pixels
parameter now accepts anArrayBufferView
of typeFloat32Array
.
Limitation: Linear filtering
Linear filtering on floating-point textures is not allowed with this extension. If you set the magnification or minification filter in the WebGLRenderingContext.texParameter()
method to one of gl.LINEAR
, gl.LINEAR_MIPMAP_NEAREST
, gl.NEAREST_MIPMAP_LINEAR
, or gl.LINEAR_MIPMAP_LINEAR
, and use floating-point textures, the texture will be marked as incomplete.
To use linear filtering on floating-point textures, enable the OES_texture_float_linear
extension in addition to this extension.
Floating-point color buffers
This extension implicitly enables the WEBGL_color_buffer_float
extension (if supported), which allows rendering to 32-bit floating-point color buffers.
Examples
var ext = gl.getExtension('OES_texture_float');
var texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.FLOAT, image);
Specifications
Specification | Status | Comment |
---|---|---|
OES_texture_float The definition of 'OES_texture_float' in that specification. | Recommendation | Initial definition. |
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
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