在此页

• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

EXT_disjoint_timer_query.queryCounterEXT() 方法在 WebGL API records the current time into the corresponding query object.

句法

void ext.queryCounterEXT(query, target);
					

参数

query

WebGLQuery object for which to record the current time.

target

A GLenum specifying the target of the time query. Must be ext.TIMESTAMP_EXT .

返回值

None.

范例

var ext = gl.getExtension('EXT_disjoint_timer_query');
var startQuery = ext.createQueryEXT();
var endQuery = ext.createQueryEXT();
ext.queryCounterEXT(startQuery, ext.TIMESTAMP_EXT);
// ...
ext.queryCounterEXT(endQuery, ext.TIMESTAMP_EXT);
					

规范

规范	状态	注释
EXT_disjoint_timer_query The definition of 'EXT_disjoint_timer_query' in that specification.	工作草案	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
queryCounterEXT	Chrome 47 — 65 不支持 47 — 65 Removed due to the GLitch exploit .	Edge No 不支持 No Removed due to the GLitch exploit .	Firefox 51 — 63 不支持 51 — 63 Removed due to the GLitch exploit .	IE ?	Opera ?	Safari ?	WebView Android 47 — 65 不支持 47 — 65 Removed due to the GLitch exploit .	Chrome Android 47 — 65 不支持 47 — 65 Removed due to the GLitch exploit .	Firefox Android No	Opera Android ?	Safari iOS ?	Samsung Internet Android 5.0 — 9.0 不支持 5.0 — 9.0 Removed due to the GLitch exploit .

图例

不支持

不支持

兼容性未知 ?

兼容性未知

见实现注意事项。

另请参阅

• WebGLRenderingContext.getExtension()
• WebGLQuery
• EXT_disjoint_timer_query

元数据

• 最后修改： 2019 年 3 月 23 日

相关话题

1. WebGL API
2. EXT_disjoint_timer_query
3. 方法

   1. beginQueryEXT()
   2. createQueryEXT()
   3. deleteQueryEXT()
   4. endQueryEXT()
   5. getQueryEXT()
   6. getQueryObjectEXT()
   7. isQueryEXT()
   8. queryCounterEXT()
4. WebGL 相关页面

   1. ANGLE_instanced_arrays
   2. EXT_blend_minmax
   3. EXT_color_buffer_half_float
   4. EXT_frag_depth
   5. EXT_sRGB
   6. EXT_shader_texture_lod
   7. EXT_texture_filter_anisotropic
   8. OES_element_index_uint
   9. OES_standard_derivatives
   10. OES_texture_float
   11. OES_texture_float_linear
   12. OES_texture_half_float
   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