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  3. WebGLRenderingContext
  4. WebGLRenderingContext.getVertexAttrib()

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WebGLRenderingContext.getVertexAttrib() 方法在 WebGL API returns information about a vertex attribute at a given position.

句法 

any gl.getVertexAttrib(index, pname);

参数

index
GLuint specifying the index of the vertex attribute.
pname
A GLenum specifying the information to query. Possible values:
  • gl.VERTEX_ATTRIB_ARRAY_BUFFER_BINDING : Returns the currently bound WebGLBuffer .
  • gl.VERTEX_ATTRIB_ARRAY_ENABLED : Returns a GLboolean 也就是 true if the vertex attribute is enabled at this index . Otherwise false .
  • gl.VERTEX_ATTRIB_ARRAY_SIZE : Returns a GLint indicating the size of an element of the vertex array.
  • gl.VERTEX_ATTRIB_ARRAY_STRIDE : Returns a GLint indicating the number of bytes between successive elements in the array. 0 means that the elements are sequential.
  • gl.VERTEX_ATTRIB_ARRAY_TYPE : Returns a GLenum representing the array type. One of
    • gl.BYTE ,
    • gl.UNSIGNED_BYTE ,
    • gl.SHORT ,
    • gl.UNSIGNED_SHORT ,
    • gl.FLOAT .
  • gl.VERTEX_ATTRIB_ARRAY_NORMALIZED : Returns a GLboolean that is true if fixed-point data types are normalized for the vertex attribute array at the given index .
  • gl.CURRENT_VERTEX_ATTRIB : Returns a Float32Array (with 4 elements) representing the current value of the vertex attribute at the given index .
  • 当使用 WebGL 2 context , the following values are available additionally:
    • gl.VERTEX_ATTRIB_ARRAY_INTEGER : Returns a GLboolean indicating whether or not an integer data type is in the vertex attribute array at the given index .
    • gl.VERTEX_ATTRIB_ARRAY_DIVISOR : Returns a GLint describing the frequency divisor used for instanced rendering.
  • 当使用 ANGLE_instanced_arrays extension:
    • ext.VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE : Returns a GLint describing the frequency divisor used for instanced rendering.

返回值

Returns the requested vertex attribute information (as specified with pname ).

范例 

gl.getVertexAttrib(0, gl.VERTEX_ATTRIB_ARRAY_BUFFER_BINDING);

规范

规范 状态 注释
WebGL 1.0
The definition of 'getVertexAttrib' in that specification. 		推荐 Initial definition for WebGL.
OpenGL ES 2.0
The definition of 'glGetVertexAttrib' in that specification. 		标准 Man page of the OpenGL ES 2 API.
WebGL 2.0
The definition of 'getVertexAttrib' in that specification. 		编者草案 Updated definition for WebGL 2.
OpenGL ES 3.0
The definition of 'glGetVertexAttrib' in that specification. 		标准 Man page of the OpenGL ES 3 API.

浏览器兼容性

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
getVertexAttrib Chrome 9 Edge 12 Firefox 4 IE 11 Opera 12 Safari 5.1 WebView Android Yes Chrome Android 25 Firefox Android Yes Opera Android 12 Safari iOS 8 Samsung Internet Android 1.5
WebGL2 Chrome 56 Edge 79 Firefox 51 IE No Opera 43 Safari No WebView Android 58 Chrome Android 58 Firefox Android 51 Opera Android 43 Safari iOS No Samsung Internet Android 7.0

图例

完整支持

完整支持

不支持

不支持

另请参阅

元数据

  • 最后修改：
  1. WebGL API
  2. WebGLRenderingContext
  3. 特性
    1. canvas
    2. drawingBufferHeight
    3. drawingBufferWidth
  4. 方法
    1. activeTexture()
    2. attachShader()
    3. bindAttribLocation()
    4. bindBuffer()
    5. bindFramebuffer()
    6. bindRenderbuffer()
    7. bindTexture()
    8. blendColor()
    9. blendEquation()
    10. blendEquationSeparate()
    11. blendFunc()
    12. blendFuncSeparate()
    13. bufferData()
    14. bufferSubData()
    15. checkFramebufferStatus()
    16. clear()
    17. clearColor()
    18. clearDepth()
    19. clearStencil()
    20. colorMask()
    21. commit()
    22. compileShader()
    23. compressedTexImage[23]D()
    24. compressedTexSubImage2D()
    25. copyTexImage2D()
    26. copyTexSubImage2D()
    27. createBuffer()
    28. createFramebuffer()
    29. createProgram()
    30. createRenderbuffer()
    31. createShader()
    32. createTexture()
    33. cullFace()
    34. deleteBuffer()
    35. deleteFramebuffer()
    36. deleteProgram()
    37. deleteRenderbuffer()
    38. deleteShader()
    39. deleteTexture()
    40. depthFunc()
    41. depthMask()
    42. depthRange()
    43. detachShader()
    44. disable()
    45. disableVertexAttribArray()
    46. drawArrays()
    47. drawElements()
    48. enable()
    49. enableVertexAttribArray()
    50. finish()
    51. flush()
    52. framebufferRenderbuffer()
    53. framebufferTexture2D()
    54. frontFace()
    55. generateMipmap()
    56. getActiveAttrib()
    57. getActiveUniform()
    58. getAttachedShaders()
    59. getAttribLocation()
    60. getBufferParameter()
    61. getContextAttributes()
    62. getError()
    63. getExtension()
    64. getFramebufferAttachmentParameter()
    65. getParameter()
    66. getProgramInfoLog()
    67. getProgramParameter()
    68. getRenderbufferParameter()
    69. getShaderInfoLog()
    70. getShaderParameter()
    71. getShaderPrecisionFormat()
    72. getShaderSource()
    73. getSupportedExtensions()
    74. getTexParameter()
    75. getUniform()
    76. getUniformLocation()
    77. getVertexAttrib()
    78. getVertexAttribOffset()
    79. hint()
    80. isBuffer()
    81. isContextLost()
    82. isEnabled()
    83. isFramebuffer()
    84. isProgram()
    85. isRenderbuffer()
    86. isShader()
    87. isTexture()
    88. lineWidth()
    89. linkProgram()
    90. pixelStorei()
    91. polygonOffset()
    92. readPixels()
    93. renderbufferStorage()
    94. sampleCoverage()
    95. scissor()
    96. shaderSource()
    97. stencilFunc()
    98. stencilFuncSeparate()
    99. stencilMask()
    100. stencilMaskSeparate()
    101. stencilOp()
    102. stencilOpSeparate()
    103. texImage2D()
    104. texParameter[fi]()
    105. texSubImage2D()
    106. uniform[1234][fi][v]()
    107. uniformMatrix[234]fv()
    108. useProgram()
    109. validateProgram()
    110. vertexAttrib[1234]f[v]()
    111. vertexAttribPointer()
    112. viewport()
  5. 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
    14. OES_texture_half_float_linear
    15. OES_vertex_array_object
    16. WEBGL_color_buffer_float
    17. WEBGL_compressed_texture_atc
    18. WEBGL_compressed_texture_etc1
    19. WEBGL_compressed_texture_pvrtc
    20. WEBGL_compressed_texture_s3tc
    21. WEBGL_compressed_texture_s3tc_srgb
    22. WEBGL_debug_renderer_info
    23. WEBGL_debug_shaders
    24. WEBGL_depth_texture
    25. WEBGL_draw_buffers
    26. WEBGL_lose_context
    27. WebGL2RenderingContext
    28. WebGLActiveInfo
    29. WebGLBuffer
    30. WebGLContextEvent
    31. WebGLFramebuffer
    32. WebGLObject
    33. WebGLProgram
    34. WebGLQuery
    35. WebGLRenderbuffer
    36. WebGLSampler
    37. WebGLShader
    38. WebGLShaderPrecisionFormat
    39. WebGLSync
    40. WebGLTexture
    41. WebGLTransformFeedback
    42. WebGLUniformLocation
    43. WebGLVertexArrayObject