在此页

• 常量
• Extended methods
• Limitation: Linear filtering
• Half floating-point color buffers
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

OES_texture_half_float 扩展属于 WebGL API and adds texture formats with 16- (aka half float) and 32-bit floating-point components.

WebGL extensions are available using the WebGLRenderingContext.getExtension() method. For more information, see also 使用扩展 在 WebGL 教程 .

可用性： This extension is only available to WebGL1 contexts. In WebGL2 , the functionality of this extension is available on the WebGL2 context by default. The constant in WebGL2 is gl.HALF_FLOAT .

常量

ext.HALF_FLOAT_OES

Half floating-point type (16-bit).

Extended methods

This extension extends WebGLRenderingContext.texImage2D() and WebGLRenderingContext.texSubImage2D() :

• type parameter now accepts ext.HALF_FLOAT_OES .

Limitation: Linear filtering

Linear filtering on half 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 ，或 gl.LINEAR_MIPMAP_LINEAR , and use half floating-point textures, the texture will be marked as incomplete.

To use linear filtering on half floating-point textures, enable the OES_texture_half_float_linear extension in addition to this extension.

Half floating-point color buffers

This extension implicitly enables the EXT_color_buffer_half_float extension (if supported), which allows rendering to 16-bit floating point formats.

范例

var ext = gl.getExtension('OES_texture_half_float');
var texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, ext.HALF_FLOAT_OES, image);
					

规范

规范	状态	注释
OES_texture_half_float The definition of 'OES_texture_half_float' in that specification.	推荐	初始定义。

浏览器兼容性

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.

更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
OES_texture_half_float	Chrome Yes	Edge ≤18	Firefox 29	IE ?	Opera Yes	Safari ?	WebView Android Yes	Chrome Android Yes	Firefox Android ?	Opera Android Yes	Safari iOS ?	Samsung Internet Android Yes

图例

完整支持

完整支持

兼容性未知 ?

兼容性未知

另请参阅

• WebGLRenderingContext.getExtension()
• WebGLRenderingContext.texImage2D()
• WebGLRenderingContext.texSubImage2D()
• OES_texture_float
• OES_texture_float_linear
• OES_texture_half_float_linear

元数据

• 最后修改： 2019 年 3 月 23 日

相关话题

1. WebGL API
2. OES_texture_half_float
3. WebGL 相关页面

   1. ANGLE_instanced_arrays
   2. EXT_blend_minmax
   3. EXT_color_buffer_half_float
   4. EXT_disjoint_timer_query
   5. EXT_frag_depth
   6. EXT_sRGB
   7. EXT_shader_texture_lod
   8. EXT_texture_filter_anisotropic
   9. OES_element_index_uint
   10. OES_standard_derivatives
   11. OES_texture_float
   12. OES_texture_float_linear
   13. OES_texture_half_float_linear
   14. OES_vertex_array_object
   15. WEBGL_color_buffer_float
   16. WEBGL_compressed_texture_atc
   17. WEBGL_compressed_texture_etc1
   18. WEBGL_compressed_texture_pvrtc
   19. WEBGL_compressed_texture_s3tc
   20. WEBGL_compressed_texture_s3tc_srgb
   21. WEBGL_debug_renderer_info
   22. WEBGL_debug_shaders
   23. WEBGL_depth_texture
   24. WEBGL_draw_buffers
   25. WEBGL_lose_context
   26. WebGL2RenderingContext
   27. WebGLActiveInfo
   28. WebGLBuffer
   29. WebGLContextEvent
   30. WebGLFramebuffer
   31. WebGLObject
   32. WebGLProgram
   33. WebGLQuery
   34. WebGLRenderbuffer
   35. WebGLRenderingContext
   36. WebGLSampler
   37. WebGLShader
   38. WebGLShaderPrecisionFormat
   39. WebGLSync
   40. WebGLTexture
   41. WebGLTransformFeedback
   42. WebGLUniformLocation
   43. WebGLVertexArrayObject