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title short-title slug page-type browser-compat
WebGLRenderingContext: getParameter() method
getParameter()
Web/API/WebGLRenderingContext/getParameter
web-api-instance-method
api.WebGLRenderingContext.getParameter

{{APIRef("WebGL")}}

The WebGLRenderingContext.getParameter() method of the WebGL API returns a value for the passed parameter name.

Syntax

getParameter(pname)

Parameters

  • pname
    • : A {{domxref("WebGL_API/Types", "GLenum")}} specifying which parameter value to return. See below for possible values.

Return value

Depends on the parameter.

Parameter names

WebGL 1

You can query the following pname parameters when using a {{domxref("WebGLRenderingContext")}}.

Constant Returned type Description
gl.ACTIVE_TEXTURE {{domxref("WebGL_API/Types", "GLenum")}}
gl.ALIASED_LINE_WIDTH_RANGE {{jsxref("Float32Array")}} (with 2 elements)
gl.ALIASED_POINT_SIZE_RANGE {{jsxref("Float32Array")}} (with 2 elements)
gl.ALPHA_BITS {{domxref("WebGL_API/Types", "GLint")}}
gl.ARRAY_BUFFER_BINDING {{domxref("WebGLBuffer")}}
gl.BLEND {{domxref("WebGL_API/Types", "GLboolean")}}
gl.BLEND_COLOR {{jsxref("Float32Array")}} (with 4 values)
gl.BLEND_DST_ALPHA {{domxref("WebGL_API/Types", "GLenum")}}
gl.BLEND_DST_RGB {{domxref("WebGL_API/Types", "GLenum")}}
gl.BLEND_EQUATION {{domxref("WebGL_API/Types", "GLenum")}}
gl.BLEND_EQUATION_ALPHA {{domxref("WebGL_API/Types", "GLenum")}}
gl.BLEND_EQUATION_RGB {{domxref("WebGL_API/Types", "GLenum")}}
gl.BLEND_SRC_ALPHA {{domxref("WebGL_API/Types", "GLenum")}}
gl.BLEND_SRC_RGB {{domxref("WebGL_API/Types", "GLenum")}}
gl.BLUE_BITS {{domxref("WebGL_API/Types", "GLint")}}
gl.COLOR_CLEAR_VALUE {{jsxref("Float32Array")}} (with 4 values)
gl.COLOR_WRITEMASK sequence<{{domxref("WebGL_API/Types", "GLboolean")}}> (with 4 values)
gl.COMPRESSED_TEXTURE_FORMATS {{jsxref("Uint32Array")}} Returns the compressed texture formats.

When using the {{domxref("WEBGL_compressed_texture_s3tc")}} extension:
  • ext.COMPRESSED_RGB_S3TC_DXT1_EXT
  • ext.COMPRESSED_RGBA_S3TC_DXT1_EXT
  • ext.COMPRESSED_RGBA_S3TC_DXT3_EXT
  • ext.COMPRESSED_RGBA_S3TC_DXT5_EXT

When using the {{domxref("WEBGL_compressed_texture_s3tc_srgb")}} extension:

  • ext.COMPRESSED_SRGB_S3TC_DXT1_EXT
  • ext.COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT
  • ext.COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT
  • ext.COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT
When using the {{domxref("WEBGL_compressed_texture_etc")}} extension:
  • ext.COMPRESSED_R11_EAC
  • ext.COMPRESSED_SIGNED_R11_EAC
  • ext.COMPRESSED_RG11_EAC
  • ext.COMPRESSED_SIGNED_RG11_EAC
  • ext.COMPRESSED_RGB8_ETC2
  • ext.COMPRESSED_RGBA8_ETC2_EAC
  • ext.COMPRESSED_SRGB8_ETC2
  • ext.COMPRESSED_SRGB8_ALPHA8_ETC2_EAC
  • ext.COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2
  • ext.COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2
When using the {{domxref("WEBGL_compressed_texture_pvrtc")}} extension:
  • ext.COMPRESSED_RGB_PVRTC_4BPPV1_IMG
  • ext.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG
  • ext.COMPRESSED_RGB_PVRTC_2BPPV1_IMG
  • ext.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG
When using the {{domxref("WEBGL_compressed_texture_etc1")}} extension:
  • ext.COMPRESSED_RGB_ETC1_WEBGL
When using the {{domxref("WEBGL_compressed_texture_astc")}} extension:
  • ext.COMPRESSED_RGBA_ASTC_4x4_KHR
  • ext.COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR
  • ext.COMPRESSED_RGBA_ASTC_5x4_KHR
  • ext.COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR
  • ext.COMPRESSED_RGBA_ASTC_5x5_KHR
  • ext.COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR
  • ext.COMPRESSED_RGBA_ASTC_6x5_KHR
  • ext.COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR
  • ext.COMPRESSED_RGBA_ASTC_6x6_KHR
  • ext.COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR
  • ext.COMPRESSED_RGBA_ASTC_8x5_KHR
  • ext.COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR
  • ext.COMPRESSED_RGBA_ASTC_8x6_KHR
  • ext.COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR
  • ext.COMPRESSED_RGBA_ASTC_8x8_KHR
  • ext.COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR
  • ext.COMPRESSED_RGBA_ASTC_10x5_KHR
  • ext.COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR
  • ext.COMPRESSED_RGBA_ASTC_10x6_KHR
  • ext.COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR
  • ext.COMPRESSED_RGBA_ASTC_10x6_KHR
  • ext.COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR
  • ext.COMPRESSED_RGBA_ASTC_10x10_KHR
  • ext.COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR
  • ext.COMPRESSED_RGBA_ASTC_12x10_KHR
  • ext.COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR
  • ext.COMPRESSED_RGBA_ASTC_12x12_KHR
  • ext.COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR
gl.CULL_FACE {{domxref("WebGL_API/Types", "GLboolean")}}
gl.CULL_FACE_MODE {{domxref("WebGL_API/Types", "GLenum")}} gl.FRONT, gl.BACK or gl.FRONT_AND_BACK. See also {{domxref("WebGLRenderingContext/cullFace", "cullFace")}}
gl.CURRENT_PROGRAM {{domxref("WebGLProgram")}} or null See {{domxref("WebGLRenderingContext/useProgram", "useProgram")}}.
gl.DEPTH_BITS {{domxref("WebGL_API/Types", "GLint")}}
gl.DEPTH_CLEAR_VALUE {{domxref("WebGL_API/Types", "GLfloat")}}
gl.DEPTH_FUNC {{domxref("WebGL_API/Types", "GLenum")}}
gl.DEPTH_RANGE {{jsxref("Float32Array")}} (with 2 elements)
gl.DEPTH_TEST {{domxref("WebGL_API/Types", "GLboolean")}}
gl.DEPTH_WRITEMASK {{domxref("WebGL_API/Types", "GLboolean")}}
gl.DITHER {{domxref("WebGL_API/Types", "GLboolean")}}
gl.ELEMENT_ARRAY_BUFFER_BINDING {{domxref("WebGLBuffer")}}
gl.FRAMEBUFFER_BINDING {{domxref("WebGLFramebuffer")}} or null null corresponds to a binding to the default framebuffer. See also {{domxref("WebGLRenderingContext/bindFramebuffer", "bindFramebuffer")}}.
gl.FRONT_FACE {{domxref("WebGL_API/Types", "GLenum")}} gl.CW or gl.CCW. See also {{domxref("WebGLRenderingContext/frontFace", "frontFace")}}.
gl.GENERATE_MIPMAP_HINT {{domxref("WebGL_API/Types", "GLenum")}} gl.FASTEST, gl.NICEST or gl.DONT_CARE. See also {{domxref("WebGLRenderingContext/hint", "hint")}}.
gl.GREEN_BITS {{domxref("WebGL_API/Types", "GLint")}}
gl.IMPLEMENTATION_COLOR_READ_FORMAT {{domxref("WebGL_API/Types", "GLenum")}}
gl.IMPLEMENTATION_COLOR_READ_TYPE {{domxref("WebGL_API/Types", "GLenum")}}
gl.LINE_WIDTH {{domxref("WebGL_API/Types", "GLfloat")}}
gl.MAX_COMBINED_TEXTURE_IMAGE_UNITS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_CUBE_MAP_TEXTURE_SIZE {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_FRAGMENT_UNIFORM_VECTORS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_RENDERBUFFER_SIZE {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_TEXTURE_IMAGE_UNITS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_TEXTURE_SIZE {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_VARYING_VECTORS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_VERTEX_ATTRIBS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_VERTEX_TEXTURE_IMAGE_UNITS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_VERTEX_UNIFORM_VECTORS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_VIEWPORT_DIMS {{jsxref("Int32Array")}} (with 2 elements)
gl.PACK_ALIGNMENT {{domxref("WebGL_API/Types", "GLint")}}
gl.POLYGON_OFFSET_FACTOR {{domxref("WebGL_API/Types", "GLfloat")}}
gl.POLYGON_OFFSET_FILL {{domxref("WebGL_API/Types", "GLboolean")}}
gl.POLYGON_OFFSET_UNITS {{domxref("WebGL_API/Types", "GLfloat")}}
gl.RED_BITS {{domxref("WebGL_API/Types", "GLint")}}
gl.RENDERBUFFER_BINDING {{domxref("WebGLRenderbuffer")}} or null See {{domxref("WebGLRenderingContext/bindRenderbuffer", "bindRenderbuffer")}}.
gl.RENDERER string
gl.SAMPLE_BUFFERS {{domxref("WebGL_API/Types", "GLint")}}
gl.SAMPLE_COVERAGE_INVERT {{domxref("WebGL_API/Types", "GLboolean")}}
gl.SAMPLE_COVERAGE_VALUE {{domxref("WebGL_API/Types", "GLfloat")}}
gl.SAMPLES {{domxref("WebGL_API/Types", "GLint")}}
gl.SCISSOR_BOX {{jsxref("Int32Array")}} (with 4 elements)
gl.SCISSOR_TEST {{domxref("WebGL_API/Types", "GLboolean")}}
gl.SHADING_LANGUAGE_VERSION string
gl.STENCIL_BACK_FAIL {{domxref("WebGL_API/Types", "GLenum")}}
gl.STENCIL_BACK_FUNC {{domxref("WebGL_API/Types", "GLenum")}}
gl.STENCIL_BACK_PASS_DEPTH_FAIL {{domxref("WebGL_API/Types", "GLenum")}}
gl.STENCIL_BACK_PASS_DEPTH_PASS {{domxref("WebGL_API/Types", "GLenum")}}
gl.STENCIL_BACK_REF {{domxref("WebGL_API/Types", "GLint")}}
gl.STENCIL_BACK_VALUE_MASK {{domxref("WebGL_API/Types", "GLuint")}}
gl.STENCIL_BACK_WRITEMASK {{domxref("WebGL_API/Types", "GLuint")}}
gl.STENCIL_BITS {{domxref("WebGL_API/Types", "GLint")}}
gl.STENCIL_CLEAR_VALUE {{domxref("WebGL_API/Types", "GLint")}}
gl.STENCIL_FAIL {{domxref("WebGL_API/Types", "GLenum")}}
gl.STENCIL_FUNC {{domxref("WebGL_API/Types", "GLenum")}}
gl.STENCIL_PASS_DEPTH_FAIL {{domxref("WebGL_API/Types", "GLenum")}}
gl.STENCIL_PASS_DEPTH_PASS {{domxref("WebGL_API/Types", "GLenum")}}
gl.STENCIL_REF {{domxref("WebGL_API/Types", "GLint")}}
gl.STENCIL_TEST {{domxref("WebGL_API/Types", "GLboolean")}}
gl.STENCIL_VALUE_MASK {{domxref("WebGL_API/Types", "GLuint")}}
gl.STENCIL_WRITEMASK {{domxref("WebGL_API/Types", "GLuint")}}
gl.SUBPIXEL_BITS {{domxref("WebGL_API/Types", "GLint")}}
gl.TEXTURE_BINDING_2D {{domxref("WebGLTexture")}} or null
gl.TEXTURE_BINDING_CUBE_MAP {{domxref("WebGLTexture")}} or null
gl.UNPACK_ALIGNMENT {{domxref("WebGL_API/Types", "GLint")}}
gl.UNPACK_COLORSPACE_CONVERSION_WEBGL {{domxref("WebGL_API/Types", "GLenum")}}
gl.UNPACK_FLIP_Y_WEBGL {{domxref("WebGL_API/Types", "GLboolean")}}
gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL {{domxref("WebGL_API/Types", "GLboolean")}}
gl.VENDOR string
gl.VERSION string
gl.VIEWPORT {{jsxref("Int32Array")}} (with 4 elements)

WebGL 2

You can query the following pname parameters when using a {{domxref("WebGL2RenderingContext")}}.

Constant Returned type Description
gl.COPY_READ_BUFFER_BINDING {{domxref("WebGLBuffer")}} or null See {{domxref("WebGLRenderingContext/bindBuffer", "bindBuffer")}}.
gl.COPY_WRITE_BUFFER_BINDING {{domxref("WebGLBuffer")}} or null See {{domxref("WebGLRenderingContext/bindBuffer", "bindBuffer")}}.
gl.DRAW_BUFFERi {{domxref("WebGL_API/Types", "GLenum")}} gl.BACK, gl.NONE or gl.COLOR_ATTACHMENT{0-15}. See also {{domxref("WebGL2RenderingContext/drawBuffers", "drawBuffers")}}.
gl.DRAW_FRAMEBUFFER_BINDING {{domxref("WebGLFramebuffer")}} or null null corresponds to a binding to the default framebuffer. See also {{domxref("WebGLRenderingContext/bindFramebuffer", "bindFramebuffer")}}.
gl.FRAGMENT_SHADER_DERIVATIVE_HINT {{domxref("WebGL_API/Types", "GLenum")}} gl.FASTEST, gl.NICEST or gl.DONT_CARE. See also {{domxref("WebGLRenderingContext/hint", "hint")}}.
gl.MAX_3D_TEXTURE_SIZE {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_ARRAY_TEXTURE_LAYERS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_CLIENT_WAIT_TIMEOUT_WEBGL {{domxref("WebGL_API/Types", "GLint64")}}
gl.MAX_COLOR_ATTACHMENTS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS {{domxref("WebGL_API/Types", "GLint64")}}
gl.MAX_COMBINED_UNIFORM_BLOCKS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS {{domxref("WebGL_API/Types", "GLint64")}}
gl.MAX_DRAW_BUFFERS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_ELEMENT_INDEX {{domxref("WebGL_API/Types", "GLint64")}}
gl.MAX_ELEMENTS_INDICES {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_ELEMENTS_VERTICES {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_FRAGMENT_INPUT_COMPONENTS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_FRAGMENT_UNIFORM_BLOCKS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_FRAGMENT_UNIFORM_COMPONENTS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_PROGRAM_TEXEL_OFFSET {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_SAMPLES {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_SERVER_WAIT_TIMEOUT {{domxref("WebGL_API/Types", "GLint64")}}
gl.MAX_TEXTURE_LOD_BIAS {{domxref("WebGL_API/Types", "GLfloat")}}
gl.MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_UNIFORM_BLOCK_SIZE {{domxref("WebGL_API/Types", "GLint64")}}
gl.MAX_UNIFORM_BUFFER_BINDINGS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_VARYING_COMPONENTS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_VERTEX_OUTPUT_COMPONENTS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_VERTEX_UNIFORM_BLOCKS {{domxref("WebGL_API/Types", "GLint")}}
gl.MAX_VERTEX_UNIFORM_COMPONENTS {{domxref("WebGL_API/Types", "GLint")}}
gl.MIN_PROGRAM_TEXEL_OFFSET {{domxref("WebGL_API/Types", "GLint")}}
gl.PACK_ROW_LENGTH {{domxref("WebGL_API/Types", "GLint")}} See {{domxref("WebGLRenderingContext/pixelStorei", "pixelStorei")}}.
gl.PACK_SKIP_PIXELS {{domxref("WebGL_API/Types", "GLint")}} See {{domxref("WebGLRenderingContext/pixelStorei", "pixelStorei")}}.
gl.PACK_SKIP_ROWS {{domxref("WebGL_API/Types", "GLint")}} See {{domxref("WebGLRenderingContext/pixelStorei", "pixelStorei")}}.
gl.PIXEL_PACK_BUFFER_BINDING {{domxref("WebGLBuffer")}} or null See {{domxref("WebGLRenderingContext/bindBuffer", "bindBuffer")}}.
gl.PIXEL_UNPACK_BUFFER_BINDING {{domxref("WebGLBuffer")}} or null See {{domxref("WebGLRenderingContext/bindBuffer", "bindBuffer")}}.
gl.RASTERIZER_DISCARD {{domxref("WebGL_API/Types", "GLboolean")}}
gl.READ_BUFFER {{domxref("WebGL_API/Types", "GLenum")}}
gl.READ_FRAMEBUFFER_BINDING {{domxref("WebGLFramebuffer")}} or null null corresponds to a binding to the default framebuffer. See also {{domxref("WebGLRenderingContext/bindFramebuffer", "bindFramebuffer")}}.
gl.SAMPLE_ALPHA_TO_COVERAGE {{domxref("WebGL_API/Types", "GLboolean")}}
gl.SAMPLE_COVERAGE {{domxref("WebGL_API/Types", "GLboolean")}}
gl.SAMPLER_BINDING {{domxref("WebGLSampler")}} or null See {{domxref("WebGL2RenderingContext/bindSampler", "bindSampler")}}.
gl.TEXTURE_BINDING_2D_ARRAY {{domxref("WebGLTexture")}} or null See {{domxref("WebGLRenderingContext/bindTexture", "bindTexture")}}.
gl.TEXTURE_BINDING_3D {{domxref("WebGLTexture")}} or null See {{domxref("WebGLRenderingContext/bindTexture", "bindTexture")}}.
gl.TRANSFORM_FEEDBACK_ACTIVE {{domxref("WebGL_API/Types", "GLboolean")}}
gl.TRANSFORM_FEEDBACK_BINDING {{domxref("WebGLTransformFeedback")}} or null See {{domxref("WebGL2RenderingContext/bindTransformFeedback", "bindTransformFeedback")}}.
gl.TRANSFORM_FEEDBACK_BUFFER_BINDING {{domxref("WebGLBuffer")}} or null See {{domxref("WebGLRenderingContext/bindBuffer", "bindBuffer")}}.
gl.TRANSFORM_FEEDBACK_PAUSED {{domxref("WebGL_API/Types", "GLboolean")}}
gl.UNIFORM_BUFFER_BINDING {{domxref("WebGLBuffer")}} or null See {{domxref("WebGLRenderingContext/bindBuffer", "bindBuffer")}}.
gl.UNIFORM_BUFFER_OFFSET_ALIGNMENT {{domxref("WebGL_API/Types", "GLint")}} See {{domxref("WebGLRenderingContext/pixelStorei", "pixelStorei")}}.
gl.UNPACK_IMAGE_HEIGHT {{domxref("WebGL_API/Types", "GLint")}} See {{domxref("WebGLRenderingContext/pixelStorei", "pixelStorei")}}.
gl.UNPACK_ROW_LENGTH {{domxref("WebGL_API/Types", "GLint")}} See {{domxref("WebGLRenderingContext/pixelStorei", "pixelStorei")}}.
gl.UNPACK_SKIP_IMAGES {{domxref("WebGL_API/Types", "GLint")}} See {{domxref("WebGLRenderingContext/pixelStorei", "pixelStorei")}}.
gl.UNPACK_SKIP_PIXELS {{domxref("WebGL_API/Types", "GLint")}} See {{domxref("WebGLRenderingContext/pixelStorei", "pixelStorei")}}.
gl.UNPACK_SKIP_ROWS {{domxref("WebGL_API/Types", "GLint")}} See {{domxref("WebGLRenderingContext/pixelStorei", "pixelStorei")}}.
gl.VERTEX_ARRAY_BINDING {{domxref("WebGLVertexArrayObject")}} or null See {{domxref("WebGL2RenderingContext/bindVertexArray", "bindVertexArray")}}.

WebGL extensions

You can query the following pname parameters when using WebGL extensions:

Constant Returned type Extension Description
ext.MAX_TEXTURE_MAX_ANISOTROPY_EXT {{domxref("WebGL_API/Types", "GLfloat")}} {{domxref("EXT_texture_filter_anisotropic")}} Maximum available anisotropy.
ext.FRAGMENT_SHADER_DERIVATIVE_HINT_OES {{domxref("WebGL_API/Types", "GLenum")}} {{domxref("OES_standard_derivatives")}} Accuracy of the derivative calculation for the GLSL built-in functions: dFdx, dFdy, and fwidth.
ext.MAX_COLOR_ATTACHMENTS_WEBGL {{domxref("WebGL_API/Types", "GLint")}} {{domxref("WEBGL_draw_buffers")}} The maximum number of framebuffer color attachment points.
ext.MAX_DRAW_BUFFERS_WEBGL {{domxref("WebGL_API/Types", "GLint")}} {{domxref("WEBGL_draw_buffers")}} The maximum number of draw buffers.
ext.DRAW_BUFFER0_WEBGL
ext.DRAW_BUFFER1_WEBGL
ext.DRAW_BUFFER2_WEBGL
ext.DRAW_BUFFER3_WEBGL
ext.DRAW_BUFFER4_WEBGL
ext.DRAW_BUFFER5_WEBGL
ext.DRAW_BUFFER6_WEBGL
ext.DRAW_BUFFER7_WEBGL
ext.DRAW_BUFFER8_WEBGL
ext.DRAW_BUFFER9_WEBGL
ext.DRAW_BUFFER10_WEBGL
ext.DRAW_BUFFER11_WEBGL
ext.DRAW_BUFFER12_WEBGL
ext.DRAW_BUFFER13_WEBGL
ext.DRAW_BUFFER14_WEBGL
ext.DRAW_BUFFER15_WEBGL 		{{domxref("WebGL_API/Types", "GLenum")}} {{domxref("WEBGL_draw_buffers")}} Drawing buffers.
ext.VERTEX_ARRAY_BINDING_OES {{domxref("WebGLVertexArrayObject", "WebGLVertexArrayObjectOES")}} {{domxref("OES_vertex_array_object")}} Bound vertex array object (VAO).
ext.TIMESTAMP_EXT {{domxref("WebGL_API/Types", "GLuint64EXT")}}

{{domxref("EXT_disjoint_timer_query")}}

 The current time.
ext.GPU_DISJOINT_EXT {{domxref("WebGL_API/Types", "GLboolean")}} {{domxref("EXT_disjoint_timer_query")}}

Returns whether or not the GPU performed any disjoint operation.
ext.MAX_VIEWS_OVR {{domxref("WebGL_API/Types", "GLint")}} {{domxref("OVR_multiview2")}} Maximum number of views.

Examples

gl.getParameter(gl.DITHER);
gl.getParameter(gl.VERSION);
gl.getParameter(gl.VIEWPORT);

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

  • {{domxref("WebGLRenderingContext.enable()")}}
  • {{domxref("WebGLRenderingContext.disable()")}}
  • {{domxref("EXT_texture_filter_anisotropic")}}
  • {{domxref("OES_standard_derivatives")}}
  • {{domxref("WEBGL_draw_buffers")}}
  • {{domxref("EXT_disjoint_timer_query")}}