# WebGL WebGL提供图形绘制的能力，包括对当前绘制图形的位置、颜色等进行处理。 WebGL标准图形API，对应OpenGL ES 2.0特性集。更多信息请参考[WebGL™标准](https://www.khronos.org/registry/webgl/specs/latest/1.0/)。 > **说明：** > > 本模块首批接口从API version 7开始支持。后续版本的新增接口，采用上角标单独标记接口的起始版本。 ## 调用方式 hml内创建canvas，示例如下： ```html
``` js内获取canvas实例，示例如下： ```js // 获取canvas组件实例 const el = this.$refs.canvas1; // 从canvas组件实例获取WebGL上下文 const gl = el.getContext('webgl'); // 调用WebGL API gl.clearColor(0.0, 0.0, 0.0, 1.0); ``` ## Type **系统能力：** 以下各项对应的系统能力均为 SystemCapability.Graphic.Graphic2D.WebGL。 **表1** Type | 名称 | 类型 | | -------- | -------- | | GLenum | number | | GLboolean | boolean | | GLbitfield | number | | GLbyte | number | | GLshort | number | | GLint | number | | GLsizei | number | | GLintptr | number | | GLsizeiptr | number | | GLubyte | number | | GLushort | number | | GLuint | number | | GLfloat | number | | GLclampf | number | | TexImageSource | ImageData | | Float32List | array | | Int32List | array | | WebGLPowerPreference | string | ## Interface **系统能力：** 以下各项对应的系统能力均为 SystemCapability.Graphic.Graphic2D.WebGL。 **表2** Interface | 名称 | | -------- | | [WebGLContextAttributes](#webglcontextattributes) | | WebGLBuffer | | WebGLFrameBuffer | | WebGLProgram | | WebGLRenderbuffer | | WebGLShader | | WebGLTexture | | WebGLUniformLocation | | [WebGLActiveInfo](#webglactiveinfo) | | [WebGLShaderPrecisionFormat](#webglshaderprecisionformat) | | [WebGLRenderingContextBase](#webglrenderingcontextbase) | | [WebGLRenderingContextOverloads](#webglrenderingcontextoverloads) | ## WebGLContextAttributes WebGLContextAttributes | 名称 | 参数类型 | 必填 | | -------- | -------- | -------- | | alpha | boolean | 否 | | depth | boolean | 否 | | stencil | boolean | 否 | | antialias | boolean | 否 | | premultipliedAlpha | boolean | 否 | | preserveDrawingBuffer | boolean | 否 | | powerPreference | WebGLPowerPreference | 否 | | failIfMajorPerformanceCaveat | boolean | 否 | | desynchronized | boolean | 否 | ## WebGLActiveInfo WebGLActiveInfo | 名称 | 参数类型 | 必填 | | -------- | -------- | -------- | | size | GLint | 是 | | type | GLenum | 是 | | name | string | 是 | ## WebGLShaderPrecisionFormat WebGLShaderPrecisionFormat | 名称 | 参数类型 | 必填 | | -------- | -------- | -------- | | rangeMin | GLint | 是 | | rangeMax | GLint | 是 | | precision | GLint | 是 | ## WebGLRenderingContextBase WebGLRenderingContextBase ### 属性 | 名称 | 参数类型 | 必填 | | -------- | -------- | -------- | | DEPTH_BUFFER_BIT | GLenum | 是 | | STENCIL_BUFFER_BIT | GLenum | 是 | | COLOR_BUFFER_BIT | GLenum | 是 | | POINTS | GLenum | 是 | | LINES | GLenum | 是 | | LINE_LOOP | GLenum | 是 | | LINE_STRIP | GLenum | 是 | | TRIANGLES | GLenum | 是 | | TRIANGLE_STRIP | GLenum | 是 | | TRIANGLE_FAN | GLenum | 是 | | ZERO | GLenum | 是 | | ONE | GLenum | 是 | | SRC_COLOR | GLenum | 是 | | ONE_MINUS_SRC_COLOR | GLenum | 是 | | SRC_ALPHA | GLenum | 是 | | ONE_MINUS_SRC_ALPHA | GLenum | 是 | | DST_ALPHA | GLenum | 是 | | ONE_MINUS_DST_ALPHA | GLenum | 是 | | DST_COLOR | GLenum | 是 | | ONE_MINUS_DST_COLOR | GLenum | 是 | | SRC_ALPHA_SATURATE | GLenum | 是 | | FUNC_ADD | GLenum | 是 | | BLEND_EQUATION | GLenum | 是 | | BLEND_EQUATION_RGB | GLenum | 是 | | BLEND_EQUATION_ALPHA | GLenum | 是 | | FUNC_SUBTRACT | GLenum | 是 | | FUNC_REVERSE_SUBTRACT | GLenum | 是 | | BLEND_DST_RGB | GLenum | 是 | | BLEND_SRC_RGB | GLenum | 是 | | BLEND_DST_ALPHA | GLenum | 是 | | BLEND_SRC_ALPHA | GLenum | 是 | | CONSTANT_COLOR | GLenum | 是 | | ONE_MINUS_CONSTANT_COLOR | GLenum | 是 | | CONSTANT_ALPHA | GLenum | 是 | | ONE_MINUS_CONSTANT_ALPHA | GLenum | 是 | | BLEND_COLOR | GLenum | 是 | | ARRAY_BUFFER | GLenum | 是 | | ELEMENT_ARRAY_BUFFER | GLenum | 是 | | ARRAY_BUFFER_BINDING | GLenum | 是 | | ELEMENT_ARRAY_BUFFER_BINDING | GLenum | 是 | | STREAM_DRAW | GLenum | 是 | | STATIC_DRAW | GLenum | 是 | | DYNAMIC_DRAW | GLenum | 是 | | BUFFER_SIZE | GLenum | 是 | | BUFFER_USAGE | GLenum | 是 | | CURRENT_VERTEX_ATTRIB | GLenum | 是 | | FRONT | GLenum | 是 | | BACK | GLenum | 是 | | FRONT_AND_BACK | GLenum | 是 | | CULL_FACE | GLenum | 是 | | BLEND | GLenum | 是 | | DITHER | GLenum | 是 | | STENCIL_TEST | GLenum | 是 | | DEPTH_TEST | GLenum | 是 | | SCISSOR_TEST | GLenum | 是 | | POLYGON_OFFSET_FILL | GLenum | 是 | | SAMPLE_ALPHA_TO_COVERAGE | GLenum | 是 | | SAMPLE_COVERAGE | GLenum | 是 | | NO_ERROR | GLenum | 是 | | INVALID_ENUM | GLenum | 是 | | INVALID_VALUE | GLenum | 是 | | INVALID_OPERATION | GLenum | 是 | | OUT_OF_MEMORY | GLenum | 是 | | CW | GLenum | 是 | | CCW | GLenum | 是 | | LINE_WIDTH | GLenum | 是 | | ALIASED_POINT_SIZE_RANGE | GLenum | 是 | | ALIASED_LINE_WIDTH_RANGE | GLenum | 是 | | CULL_FACE_MODE | GLenum | 是 | | FRONT_FACE | GLenum | 是 | | DEPTH_RANGE | GLenum | 是 | | DEPTH_WRITEMASK | GLenum | 是 | | DEPTH_CLEAR_VALUE | GLenum | 是 | | DEPTH_FUNC | GLenum | 是 | | STENCIL_CLEAR_VALUE | GLenum | 是 | | STENCIL_FUNC | GLenum | 是 | | STENCIL_FAIL | GLenum | 是 | | STENCIL_PASS_DEPTH_FAIL | GLenum | 是 | | STENCIL_PASS_DEPTH_PASS | GLenum | 是 | | STENCIL_REF | GLenum | 是 | | STENCIL_VALUE_MASK | GLenum | 是 | | STENCIL_WRITEMASK | GLenum | 是 | | STENCIL_BACK_FUNC | GLenum | 是 | | STENCIL_BACK_FAIL | GLenum | 是 | | STENCIL_BACK_PASS_DEPTH_FAIL | GLenum | 是 | | STENCIL_BACK_PASS_DEPTH_PASS | GLenum | 是 | | STENCIL_BACK_REF | GLenum | 是 | | STENCIL_BACK_VALUE_MASK | GLenum | 是 | | STENCIL_BACK_WRITEMASK | GLenum | 是 | | VIEWPORT | GLenum | 是 | | SCISSOR_BOX | GLenum | 是 | | COLOR_CLEAR_VALUE | GLenum | 是 | | COLOR_WRITEMASK | GLenum | 是 | | UNPACK_ALIGNMENT | GLenum | 是 | | PACK_ALIGNMENT | GLenum | 是 | | MAX_TEXTURE_SIZE | GLenum | 是 | | MAX_VIEWPORT_DIMS | GLenum | 是 | | SUBPIXEL_BITS | GLenum | 是 | | RED_BITS | GLenum | 是 | | GREEN_BITS | GLenum | 是 | | BLUE_BITS | GLenum | 是 | | ALPHA_BITS | GLenum | 是 | | DEPTH_BITS | GLenum | 是 | | STENCIL_BITS | GLenum | 是 | | POLYGON_OFFSET_UNITS | GLenum | 是 | | POLYGON_OFFSET_FACTOR | GLenum | 是 | | TEXTURE_BINDING_2D | GLenum | 是 | | SAMPLE_BUFFERS | GLenum | 是 | | SAMPLES | GLenum | 是 | | SAMPLE_COVERAGE_VALUE | GLenum | 是 | | SAMPLE_COVERAGE_INVERT | GLenum | 是 | | COMPRESSED_TEXTURE_FORMATS | GLenum | 是 | | DONT_CARE | GLenum | 是 | | FASTEST | GLenum | 是 | | NICEST | GLenum | 是 | | GENERATE_MIPMAP_HINT | GLenum | 是 | | BYTE | GLenum | 是 | | UNSIGNED_BYTE | GLenum | 是 | | SHORT | GLenum | 是 | | UNSIGNED_SHORT | GLenum | 是 | | INT | GLenum | 是 | | UNSIGNED_INT | GLenum | 是 | | FLOAT | GLenum | 是 | | DEPTH_COMPONENT | GLenum | 是 | | ALPHA | GLenum | 是 | | RGB | GLenum | 是 | | RGBA | GLenum | 是 | | LUMINANCE | GLenum | 是 | | LUMINANCE_ALPHA | GLenum | 是 | | UNSIGNED_SHORT_4_4_4_4 | GLenum | 是 | | UNSIGNED_SHORT_5_5_5_1 | GLenum | 是 | | UNSIGNED_SHORT_5_6_5 | GLenum | 是 | | FRAGMENT_SHADER | GLenum | 是 | | VERTEX_SHADER | GLenum | 是 | | MAX_VERTEX_ATTRIBS | GLenum | 是 | | MAX_VERTEX_UNIFORM_VECTORS | GLenum | 是 | | MAX_VARYING_VECTORS | GLenum | 是 | | MAX_COMBINED_TEXTURE_IMAGE_UNITS | GLenum | 是 | | MAX_VERTEX_TEXTURE_IMAGE_UNITS | GLenum | 是 | | MAX_TEXTURE_IMAGE_UNITS | GLenum | 是 | | MAX_FRAGMENT_UNIFORM_VECTORS | GLenum | 是 | | SHADER_TYPE | GLenum | 是 | | DELETE_STATUS | GLenum | 是 | | LINK_STATUS | GLenum | 是 | | VALIDATE_STATUS | GLenum | 是 | | ATTACHED_SHADERS | GLenum | 是 | | ACTIVE_UNIFORMS | GLenum | 是 | | ACTIVE_ATTRIBUTES | GLenum | 是 | | SHADING_LANGUAGE_VERSION | GLenum | 是 | | CURRENT_PROGRAM | GLenum | 是 | | NEVER | GLenum | 是 | | LESS | GLenum | 是 | | EQUAL | GLenum | 是 | | LEQUAL | GLenum | 是 | | GREATER | GLenum | 是 | | NOTEQUAL | GLenum | 是 | | GEQUAL | GLenum | 是 | | ALWAYS | GLenum | 是 | | KEEP | GLenum | 是 | | REPLACE | GLenum | 是 | | INCR | GLenum | 是 | | DECR | GLenum | 是 | | INVERT | GLenum | 是 | | INCR_WRAP | GLenum | 是 | | DECR_WRAP | GLenum | 是 | | VENDOR | GLenum | 是 | | RENDERER | GLenum | 是 | | VERSION | GLenum | 是 | | NEAREST | GLenum | 是 | | LINEAR | GLenum | 是 | | NEAREST_MIPMAP_NEAREST | GLenum | 是 | | LINEAR_MIPMAP_NEAREST | GLenum | 是 | | NEAREST_MIPMAP_LINEAR | GLenum | 是 | | LINEAR_MIPMAP_LINEAR | GLenum | 是 | | TEXTURE_MIN_FILTER | GLenum | 是 | | TEXTURE_WRAP_S | GLenum | 是 | | TEXTURE_WRAP_T | GLenum | 是 | | TEXTURE_2D | GLenum | 是 | | TEXTURE | GLenum | 是 | | TEXTURE_CUBE_MAP | GLenum | 是 | | TEXTURE_BINDING_CUBE_MAP | GLenum | 是 | | TEXTURE_CUBE_MAP_POSITIVE_X | GLenum | 是 | | TEXTURE_CUBE_MAP_NEGATIVE_X | GLenum | 是 | | TEXTURE_CUBE_MAP_POSITIVE_Y | GLenum | 是 | | TEXTURE_CUBE_MAP_NEGATIVE_Y | GLenum | 是 | | TEXTURE_CUBE_MAP_POSITIVE_Z | GLenum | 是 | | TEXTURE_CUBE_MAP_NEGATIVE_Z | GLenum | 是 | | MAX_CUBE_MAP_TEXTURE_SIZE | GLenum | 是 | | TEXTURE0 | GLenum | 是 | | TEXTURE1 | GLenum | 是 | | TEXTURE2 | GLenum | 是 | | TEXTURE3 | GLenum | 是 | | TEXTURE4 | GLenum | 是 | | TEXTURE5 | GLenum | 是 | | TEXTURE6 | GLenum | 是 | | TEXTURE7 | GLenum | 是 | | TEXTURE8 | GLenum | 是 | | TEXTURE9 | GLenum | 是 | | TEXTURE10 | GLenum | 是 | | TEXTURE11 | GLenum | 是 | | TEXTURE12 | GLenum | 是 | | TEXTURE13 | GLenum | 是 | | TEXTURE14 | GLenum | 是 | | TEXTURE15 | GLenum | 是 | | TEXTURE16 | GLenum | 是 | | TEXTURE17 | GLenum | 是 | | TEXTURE18 | GLenum | 是 | | TEXTURE19 | GLenum | 是 | | TEXTURE20 | GLenum | 是 | | TEXTURE21 | GLenum | 是 | | TEXTURE22 | GLenum | 是 | | TEXTURE23 | GLenum | 是 | | TEXTURE24 | GLenum | 是 | | TEXTURE25 | GLenum | 是 | | TEXTURE26 | GLenum | 是 | | TEXTURE27 | GLenum | 是 | | TEXTURE28 | GLenum | 是 | | TEXTURE29 | GLenum | 是 | | TEXTURE30 | GLenum | 是 | | TEXTURE31 | GLenum | 是 | | ACTIVE_TEXTURE | GLenum | 是 | | REPEAT | GLenum | 是 | | CLAMP_TO_EDGE | GLenum | 是 | | MIRRORED_REPEAT | GLenum | 是 | | FLOAT_VEC2 | GLenum | 是 | | FLOAT_VEC3 | GLenum | 是 | | FLOAT_VEC4 | GLenum | 是 | | INT_VEC2 | GLenum | 是 | | INT_VEC3 | GLenum | 是 | | INT_VEC4 | GLenum | 是 | | BOOL | GLenum | 是 | | BOOL_VEC2 | GLenum | 是 | | BOOL_VEC3 | GLenum | 是 | | BOOL_VEC4 | GLenum | 是 | | FLOAT_MAT2 | GLenum | 是 | | FLOAT_MAT3 | GLenum | 是 | | FLOAT_MAT4 | GLenum | 是 | | SAMPLER_2D | GLenum | 是 | | SAMPLER_CUBE | GLenum | 是 | | VERTEX_ATTRIB_ARRAY_ENABLED | GLenum | 是 | | VERTEX_ATTRIB_ARRAY_SIZE | GLenum | 是 | | VERTEX_ATTRIB_ARRAY_STRIDE | GLenum | 是 | | VERTEX_ATTRIB_ARRAY_TYPE | GLenum | 是 | | VERTEX_ATTRIB_ARRAY_NORMALIZED | GLenum | 是 | | VERTEX_ATTRIB_ARRAY_POINTER | GLenum | 是 | | VERTEX_ATTRIB_ARRAY_BUFFER_BINDING | GLenum | 是 | | IMPLEMENTATION_COLOR_READ_TYPE | GLenum | 是 | | IMPLEMENTATION_COLOR_READ_FORMAT | GLenum | 是 | | COMPILE_STATUS | GLenum | 是 | | LOW_FLOAT | GLenum | 是 | | MEDIUM_FLOAT | GLenum | 是 | | HIGH_FLOAT | GLenum | 是 | | LOW_INT | GLenum | 是 | | MEDIUM_INT | GLenum | 是 | | HIGH_INT | GLenum | 是 | | FRAMEBUFFER | GLenum | 是 | | RENDERBUFFER | GLenum | 是 | | RGBA4 | GLenum | 是 | | RGB5_A1 | GLenum | 是 | | RGB565 | GLenum | 是 | | DEPTH_COMPONENT16 | GLenum | 是 | | STENCIL_INDEX8 | GLenum | 是 | | DEPTH_STENCIL | GLenum | 是 | | RENDERBUFFER_WIDTH | GLenum | 是 | | RENDERBUFFER_HEIGHT | GLenum | 是 | | RENDERBUFFER_INTERNAL_FORMAT | GLenum | 是 | | RENDERBUFFER_RED_SIZE | GLenum | 是 | | RENDERBUFFER_GREEN_SIZE | GLenum | 是 | | RENDERBUFFER_BLUE_SIZE | GLenum | 是 | | RENDERBUFFER_ALPHA_SIZE | GLenum | 是 | | RENDERBUFFER_DEPTH_SIZE | GLenum | 是 | | RENDERBUFFER_STENCIL_SIZE | GLenum | 是 | | FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE | GLenum | 是 | | FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL | GLenum | 是 | | FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE | GLenum | 是 | | COLOR_ATTACHMENT0 | GLenum | 是 | | DEPTH_ATTACHMENT | GLenum | 是 | | STENCIL_ATTACHMENT | GLenum | 是 | | DEPTH_STENCIL_ATTACHMENT | GLenum | 是 | | NONE | GLenum | 是 | | FRAMEBUFFER_COMPLETE | GLenum | 是 | | FRAMEBUFFER_INCOMPLETE_ATTACHMENT | GLenum | 是 | | FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT | GLenum | 是 | | FRAMEBUFFER_INCOMPLETE_DIMENSIONS | GLenum | 是 | | FRAMEBUFFER_UNSUPPORTED | GLenum | 是 | | FRAMEBUFFER_BINDING | GLenum | 是 | | RENDERBUFFER_BINDING | GLenum | 是 | | MAX_RENDERBUFFER_SIZE | GLenum | 是 | | INVALID_FRAMEBUFFER_OPERATION | GLenum | 是 | | UNPACK_FLIP_Y_WEBGL | GLenum | 是 | | UNPACK_PREMULTIPLY_ALPHA_WEBGL | GLenum | 是 | | CONTEXT_LOST_WEBGL | GLenum | 是 | | UNPACK_COLORSPACE_CONVERSION_WEBGL | GLenum | 是 | | BROWSER_DEFAULT_WEBGL | GLenum | 是 | | canvas | HTMLCanvasElement \| OffscreenCanvas | 是 | | drawingBufferWidth | GLsizei | 是 | | drawingBufferHeight | GLsizei | 是 | ### 方法 | 方法 | 返回值类型 | | -------- | -------- | | getContextAttributes() | WebGLContextAttributes \| null | | isContextLost() | boolean | | getSupportedExtensions() | string[] \| null | | getExtension(name: string) | any | | activeTexture(texture: GLenum) | void | | attachShader(program: WebGLProgram, shader: WebGLShader) | void | | bindAttribLocation(program: WebGLProgram, index: GLuint, name: string) | void | | bindBuffer(target: GLenum, buffer: WebGLBuffer \| null) | void | | bindFramebuffer(target: GLenum, framebuffer: WebGLFramebuffer \| null) | void | | bindRenderbuffer(target: GLenum, renderbuffer: WebGLRenderbuffer \| null) | void | | bindTexture(target: GLenum, texture: WebGLTexture \| null) | void | | blendColor(red: GLclampf, green: GLclampf, blue: GLclampf, alpha: GLclampf) | void | | blendEquation(mode: GLenum) | void | | blendEquationSeparate(modeRGB: GLenum, modeAlpha: GLenum) | void | | blendFunc(sfactor: GLenum, dfactor: GLenum) | void | | blendFuncSeparate(srcRGB: GLenum, dstRGB: GLenum, srcAlpha: GLenum, dstAlpha: GLenum) | void | | checkFramebufferStatus(target: GLenum) | GLenum | | clear(mask: GLbitfield) | void | | clearColor(red: GLclampf, green: GLclampf, blue: GLclampf, alpha: GLclampf) | void | | clearDepth(depth: GLclampf) | void | | clearStencil(s: GLint) | void | | colorMask(red: GLboolean, green: GLboolean, blue: GLboolean, alpha: GLboolean) | void | | compileShader(shader: WebGLShader) | void | | copyTexImage2D(target: GLenum, level: GLint, internalformat: GLenum, x: GLint, y: GLint, width: GLsizei, height: GLsizei, border: GLint) | void | | copyTexSubImage2D(target: GLenum, level: GLint, xoffset: GLint, yoffset: GLint, x: GLint, y: GLint, width: GLsizei, height: GLsizei) | void | | createBuffer() | WebGLBuffer \| null | | createFramebuffer() | WebGLFramebuffer \| null | | createProgram() | WebGLProgram \| null | | createRenderbuffer() | WebGLRenderbuffer \| null | | createShader(type: GLenum) | WebGLShader \| null | | createTexture() | WebGLTexture \| null | | cullFace(mode: GLenum) | void | | deleteBuffer(buffer: WebGLBuffer \| null) | void | | deleteFramebuffer(framebuffer: WebGLFramebuffer \| null) | void | | deleteProgram(program: WebGLProgram \| null) | void | | deleteRenderbuffer(renderbuffer: WebGLRenderbuffer \| null) | void | | deleteShader(shader: WebGLShader \| null) | void | | deleteTexture(texture: WebGLTexture \| null) | void | | depthFunc(func: GLenum) | void | | depthMask(flag: GLboolean) | void | | depthRange(zNear: GLclampf, zFar: GLclampf) | void | | detachShader(program: WebGLProgram, shader: WebGLShader) | void | | disable(cap: GLenum) | void | | disableVertexAttribArray(index: GLuint) | void | | drawArrays(mode: GLenum, first: GLint, count: GLsizei) | void | | drawElements(mode: GLenum, count: GLsizei, type: GLenum, offset: GLintptr) | void | | enable(cap: GLenum) | void | | enableVertexAttribArray(index: GLuint) | void | | finish() | void | | flush() | void | | framebufferRenderbuffer(target: GLenum, attachment: GLenum, renderbuffertarget: GLenum, renderbuffer: WebGLRenderbuffer \| null) | void | | framebufferTexture2D(target: GLenum, attachment: GLenum, textarget: GLenum, texture: WebGLTexture \| null, level: GLint) | void | | frontFace(mode: GLenum) | void | | generateMipmap(target: GLenum) | void | | getActiveAttrib(program: WebGLProgram, index: GLuint) | WebGLActiveInfo \| null | | getActiveUniform(program: WebGLProgram, index: GLuint) | WebGLActiveInfo \| null | | getAttachedShaders(program: WebGLProgram) | WebGLShader[] \| null | | getAttribLocation(program: WebGLProgram, name: string) | GLint | | getBufferParameter(target: GLenum, pname: GLenum) | any | | getParameter(pname: GLenum) | any | | getError() | GLenum | | getFramebufferAttachmentParameter(target: GLenum, attachment: GLenum, pname: GLenum) | any | | getProgramParameter(program: WebGLProgram, pname: GLenum) | any | | getProgramInfoLog(program: WebGLProgram) | string \| null | | getRenderbufferParameter(target: GLenum, pname: GLenum) | any | | getShaderParameter(shader: WebGLShader, pname: GLenum) | any | | getShaderPrecisionFormat(shadertype: GLenum, precisiontype: GLenum) | WebGLShaderPrecisionFormat \| null | | getShaderInfoLog(shader: WebGLShader) | string \| null | | getShaderSource(shader: WebGLShader) | string \| null | | getTexParameter(target: GLenum, pname: GLenum) | any | | getUniform(program: WebGLProgram, location: WebGLUniformLocation) | any | | getUniformLocation(program: WebGLProgram, name: string) | WebGLUniformLocation \| null | | getVertexAttrib(index: GLuint, pname: GLenum) | any | | getVertexAttribOffset(index: GLuint, pname: GLenum) | GLintptr | | hint(target: GLenum, mode: GLenum) | void | | isBuffer(buffer: WebGLBuffer \| null) | GLboolean | | isEnabled(cap: GLenum) | GLboolean | | isFramebuffer(framebuffer: WebGLFramebuffer \| null) | GLboolean | | isProgram(program: WebGLProgram \| null) | GLboolean | | isRenderbuffer(renderbuffer: WebGLRenderbuffer \| null) | GLboolean | | isShader(shader: WebGLShader \| null) | GLboolean | | isTexture(texture: WebGLTexture \| null) | GLboolean | | lineWidth(width: GLfloat) | void | | linkProgram(program: WebGLProgram) | void | | pixelStorei(pname: GLenum, param: GLint \| GLboolean) | void | | polygonOffset(factor: GLfloat, units: GLfloat) | void | | renderbufferStorage(target: GLenum, internalformat: GLenum, width: GLsizei, height: GLsizei) | void | | sampleCoverage(value: GLclampf, invert: GLboolean) | void | | scissor(x: GLint, y: GLint, width: GLsizei, height: GLsizei) | void | | shaderSource(shader: WebGLShader, source: string) | void | | stencilFunc(func: GLenum, ref: GLint, mask: GLuint) | void | | stencilFuncSeparate(face: GLenum, func: GLenum, ref: GLint, mask: GLuint) | void | | stencilMask(mask: GLuint) | void | | stencilMaskSeparate(face: GLenum, mask: GLuint) | void | | stencilOp(fail: GLenum, zfail: GLenum, zpass: GLenum) | void | | stencilOpSeparate(face: GLenum, fail: GLenum, zfail: GLenum, zpass: GLenum) | void | | texParameterf(target: GLenum, pname: GLenum, param: GLfloat) | void | | texParameteri(target: GLenum, pname: GLenum, param: GLint) | void | | uniform1f(location: WebGLUniformLocation \| null, x: GLfloat) | void | | uniform2f(location: WebGLUniformLocation \| null, x: GLfloat, y: GLfloat) | void | | uniform3f(location: WebGLUniformLocation \| null, x: GLfloat, y: GLfloat, z: GLfloat) | void | | uniform4f(location: WebGLUniformLocation \| null, x: GLfloat, y: GLfloat, z: GLfloat, w: GLfloat) | void | | uniform1i(location: WebGLUniformLocation \| null, x: GLint) | void | | uniform2i(location: WebGLUniformLocation \| null, x: GLint, y: GLint) | void | | uniform3i(location: WebGLUniformLocation \| null, x: GLint, y: GLint, z: GLint) | void | | uniform4i(location: WebGLUniformLocation \| null, x: GLint, y: GLint, z: GLint, w: GLint) | void | | useProgram(program: WebGLProgram \| null) | void | | validateProgram(program: WebGLProgram) | void | | vertexAttrib1f(index: GLuint, x: GLfloat) | void | | vertexAttrib2f(index: GLuint, x: GLfloat, y: GLfloat) | void | | vertexAttrib3f(index: GLuint, x: GLfloat, y: GLfloat, z: GLfloat) | void | | vertexAttrib4f(index: GLuint, x: GLfloat, y: GLfloat, z: GLfloat, w: GLfloat) | void | | vertexAttrib1fv(index: GLuint, values: Float32List) | void | | vertexAttrib2fv(index: GLuint, values: Float32List) | void | | vertexAttrib3fv(index: GLuint, values: Float32List) | void | | vertexAttrib4fv(index: GLuint, values: Float32List) | void | | vertexAttribPointer(index: GLuint, size: GLint, type: GLenum, normalized: GLboolean, stride: GLsizei, offset: GLintptr) | void | | viewport(x: GLint, y: GLint, width: GLsizei, height: GLsizei) | void | ## WebGLRenderingContextOverloads WebGLRenderingContextOverloads | 方法 | 返回值类型 | | -------- | -------- | | bufferData(target: GLenum, size: GLsizeiptr, usage: GLenum) | void | | bufferData(target: GLenum, data: BufferSource \| null, usage: GLenum) | void | | bufferSubData(target: GLenum, offset: GLintptr, data: BufferSource) | void | | compressedTexImage2D(target: GLenum, level: GLint, internalformat: GLenum, width: GLsizei, height: GLsizei, border: GLint, data: ArrayBufferView) | void | | compressedTexSubImage2D(target: GLenum, level: GLint, xoffset: GLint, yoffset: GLint, width: GLsizei, height: GLsizei, format: GLenum, data: ArrayBufferView) | void | | readPixels(x: GLint, y: GLint, width: GLsizei, height: GLsizei, format: GLenum, type: GLenum, pixels: ArrayBufferView \| null) | void | | texImage2D(target: GLenum, level: GLint, internalformat: GLint, width: GLsizei, height: GLsizei, border: GLint, format: GLenum, type: GLenum, pixels: ArrayBufferView \| null) | void | | texImage2D(target: GLenum, level: GLint, internalformat: GLint, format: GLenum, type: GLenum, source: TexImageSource) | void | | texSubImage2D(target: GLenum, level: GLint, xoffset: GLint, yoffset: GLint, width: GLsizei, height: GLsizei, format: GLenum, type: GLenum, pixels: ArrayBufferView \| null) | void | | texSubImage2D(target: GLenum, level: GLint, xoffset: GLint, yoffset: GLint, format: GLenum, type: GLenum, source: TexImageSource) | void | | uniform1fv(location: WebGLUniformLocation \| null, v: Float32List) | void | | uniform2fv(location: WebGLUniformLocation \| null, v: Float32List) | void | | uniform3fv(location: WebGLUniformLocation \| null, v: Float32List) | void | | uniform4fv(location: WebGLUniformLocation \| null, v: Float32List) | void | | uniform1iv(location: WebGLUniformLocation \| null, v: Int32List) | void | | uniform2iv(location: WebGLUniformLocation \| null, v: Int32List) | void | | uniform3iv(location: WebGLUniformLocation \| null, v: Int32List) | void | | uniform4iv(location: WebGLUniformLocation \| null, v: Int32List) | void | | uniformMatrix2fv(location: WebGLUniformLocation \| null, transpose: GLboolean, value: Float32List) | void | | uniformMatrix3fv(location: WebGLUniformLocation \| null, transpose: GLboolean, value: Float32List) | void | | uniformMatrix4fv(location: WebGLUniformLocation \| null, transpose: GLboolean, value: Float32List) | void |