WebGL Specifications

https://registry.khronos.org/webgl/specs/
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### useProgram

Source: https://registry.khronos.org/webgl/specs/latest/1.0/index.html

Installs a program object as part of the current rendering state.

```APIDOC
## useProgram

### Description
Installs a program object as part of the current rendering state.

### Method
undefined

### Signature
`undefined useProgram(WebGLProgram? program);`

### Parameters
- **program** (WebGLProgram?) - Required - The program object to use.
```

--------------------------------

### beginQuery

Source: https://registry.khronos.org/webgl/specs/latest/2.0/

Begins a query operation. This starts a GPU query for the specified target.

```APIDOC
## beginQuery

### Description
Begins a query operation. This starts a GPU query for the specified target.

### Method
undefined

### Parameters
- **target** (GLenum) - Required - Specifies the query target.
- **query** (WebGLQuery) - Required - The query object to use.

### Response
No return value.
```

--------------------------------

### Handling Context Loss and Restoration

Source: https://registry.khronos.org/webgl/specs/latest/1.0/index.html

Example code showing how to handle the webglcontextlost and webglcontextrestored events to manage WebGL resources.

```APIDOC
## Event: webglcontextlost

### Description
Fired when the WebGL context is lost. The application should call `event.preventDefault()` to indicate it will handle restoration.

### Event Type
`WebGLContextEvent`

### Event Properties
- **statusMessage** (string) - A platform-dependent status message.

### Example
```javascript
canvas.addEventListener("webglcontextlost", function(event) {
  event.preventDefault();
  window.cancelAnimationFrame(requestId);
}, false);
```

## Event: webglcontextrestored

### Description
Fired when the WebGL context is restored. The application should reinitialize all WebGL resources.

### Event Type
`WebGLContextEvent`

### Event Properties
- **statusMessage** (string) - A platform-dependent status message.

### Example
```javascript
canvas.addEventListener("webglcontextrestored", function(event) {
  initializeResources();
}, false);
```

```

--------------------------------

### ECMAScript example: accessing ArrayBuffer with typed arrays

Source: https://registry.khronos.org/webgl/specs/latest/1.0/

Shows how to allocate an ArrayBuffer and map it to Float32Array and Uint8Array views to store interleaved vertex positions and colors. The example initializes the buffer with placeholder values.

```javascript
var numVertices = 100; // for example

// Compute the size needed for the buffer, in bytes and floats
var vertexSize = 3 * Float32Array.BYTES_PER_ELEMENT +
     4 * Uint8Array.BYTES_PER_ELEMENT;
var vertexSizeInFloats = vertexSize / Float32Array.BYTES_PER_ELEMENT;

// Allocate the buffer
var buf = new ArrayBuffer(numVertices * vertexSize);

// Map this buffer to a Float32Array to access the positions
var positionArray = new Float32Array(buf);

// Map the same buffer to a Uint8Array to access the color
var colorArray = new Uint8Array(buf);

// Set up the initial offset of the vertices and colors within the buffer
var positionIdx = 0;
var colorIdx = 3 * Float32Array.BYTES_PER_ELEMENT;

// Initialize the buffer
for (var i = 0; i < numVertices; i++) {
    positionArray[positionIdx] = ...;
    positionArray[positionIdx + 1] = ...;
    positionArray[positionIdx + 2] = ...;
    colorArray[colorIdx] = ...;
    colorArray[colorIdx + 1] = ...;
    colorArray[colorIdx + 2] = ...;
    colorArray[colorIdx + 3] = ...;
    positionIdx += vertexSizeInFloats;
    colorIdx += vertexSize;
}
    

```

--------------------------------

### Handling Context Creation Error

Source: https://registry.khronos.org/webgl/specs/latest/1.0/index.html

Example code showing how to handle the webglcontextcreationerror event to retrieve error information.

```APIDOC
## Event: webglcontextcreationerror

### Description
Fired when a WebGL context creation fails. The event's `statusMessage` attribute contains a platform-dependent error description.

### Event Type
`WebGLContextEvent`

### Event Properties
- **statusMessage** (string) - A platform-dependent string about the nature of the failure.

### Example
```javascript
var errorInfo = "";
function onContextCreationError(event) {
  canvas.removeEventListener("webglcontextcreationerror", onContextCreationError, false);
  errorInfo = event.statusMessage || "Unknown";
}
canvas.addEventListener("webglcontextcreationerror", onContextCreationError, false);

var gl = canvas.getContext("webgl");
if (!gl) {
  alert("A WebGL context could not be created.\nReason: " + errorInfo);
}
```

```

--------------------------------

### canvas.getContext('webgl', WebGLContextAttributes)

Source: https://registry.khronos.org/webgl/specs/latest/1.0/index.html

Creates a WebGL rendering context on a canvas element, accepting an optional WebGLContextAttributes dictionary to configure the context. The example shows passing antialias and stencil attributes.

```APIDOC
## canvas.getContext('webgl', WebGLContextAttributes)

### Description
Retrieves a WebGL rendering context for the given canvas. The `WebGLContextAttributes` argument allows configuration of context properties such as antialiasing and stencil buffer.

### Method
`getContext`

### Parameters
#### WebGLContextAttributes (optional)
- **antialias** (boolean) - Optional - Whether antialiasing is enabled. Default is implementation-defined.
- **stencil** (boolean) - Optional - Whether the stencil buffer is requested. Default is implementation-defined.

### Example
```javascript
var canvas = document.getElementById('canvas1');
var context = canvas.getContext('webgl',
                                { antialias: false,
                                  stencil: true });
```
```

--------------------------------

### Get WebGL context with attributes

Source: https://registry.khronos.org/webgl/specs/latest/1.0/

Example of passing a WebGLContextAttributes object to getContext. Assumes a canvas element with id 'canvas1' exists. Sets antialias to false and stencil to true.

```javascript
var canvas = document.getElementById('canvas1');
var context = canvas.getContext('webgl',
                                { antialias: false,
                                  stencil: true });
    
```

--------------------------------

### enable

Source: https://registry.khronos.org/webgl/specs/latest/1.0/index.html

Enables a server-side GL capability.

```APIDOC
## enable

### Description
Enables a server-side GL capability.

### Method
void enable(GLenum cap)

### Parameters
- **cap** (GLenum) - Required - The capability to enable (e.g., BLEND, CULL_FACE, etc.).

### Reference
[man page](https://registry.khronos.org/OpenGL-Refpages/es2.0/xhtml/glEnable.xml)
```

--------------------------------

### createProgram

Source: https://registry.khronos.org/webgl/specs/latest/1.0/

Creates a new WebGLProgram object and initializes it with a program object name as if by calling glCreateProgram.

```APIDOC
## WebGLProgram createProgram()

### Description
Creates a new WebGLProgram object and initializes it with a program object name as if by calling glCreateProgram.

### Method
createProgram

### Returns
- **WebGLProgram** - The newly created program object.

### References
- [OpenGL ES 2.0 §2.10.3](http://registry.khronos.org/OpenGL/specs/es/2.0/es_full_spec_2.0.pdf#nameddest=section-2.10.3)
- [man page](https://registry.khronos.org/OpenGL-Refpages/es2.0/xhtml/glCreateProgram.xml)
```

--------------------------------

### void drawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, GLintptr offset)

Source: https://registry.khronos.org/webgl/specs/latest/2.0/

A Draw Operation that draws using the currently bound element array buffer. All error conditions specified for drawElements apply. If indices used to draw are outside the range of [start, end], an implementation can either guarantee the behaviors defined in Enabled Vertex Attributes and Range Checking, or simply discard the arguments start and end and call drawElements instead. In either situation, no GL errors should be generated for this cause.

```APIDOC
## void drawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, GLintptr offset)

### Description
A Draw Operation that draws using the currently bound element array buffer. All error conditions specified for drawElements apply. If indices used to draw are outside the range of [start, end], an implementation can either guarantee the behaviors defined in Enabled Vertex Attributes and Range Checking, or simply discard the arguments start and end and call drawElements instead. In either situation, no GL errors should be generated for this cause.

### Method
drawRangeElements

### Parameters
- **mode** (GLenum) - Required - Specifies what kind of primitives to render.
- **start** (GLuint) - Required - Specifies the minimum array index contained in the element array buffer.
- **end** (GLuint) - Required - Specifies the maximum array index contained in the element array buffer.
- **count** (GLsizei) - Required - Specifies the number of elements to be rendered.
- **type** (GLenum) - Required - Specifies the type of the values in the element array buffer.
- **offset** (GLintptr) - Required - Specifies an offset into the element array buffer.

### Errors
- INVALID_OPERATION - If CURRENT_PROGRAM is null.
- Additional WebGL 2.0 error checking applies.
```

--------------------------------

### getSupportedExtensions

Source: https://registry.khronos.org/webgl/specs/latest/1.0/

Returns a list of all supported extension strings for the WebGL rendering context.

```APIDOC
## getSupportedExtensions()

### Description
Returns a list of all the supported extension strings for the WebGL rendering context.

### Method
GET

### Endpoint
N/A (WebGL API method)

### Parameters
None

### Response
#### Success Response
- **Return type**: sequence<DOMString>? - A list of extension strings, or null if none are supported.

#### Response Example
```
["WEBGL_lose_context", "OES_texture_float"]
```
```

--------------------------------

### void finish()

Source: https://registry.khronos.org/webgl/specs/latest/1.0/

Blocks until all previously issued GL commands are complete. This is a synchronization operation.

```APIDOC
## void finish()

### Description
Blocks until all previously issued GL commands are complete. This is a synchronization operation.

### Method
void

### Parameters
None.

### Errors
None specified.
```

--------------------------------

### Handle WebGL context loss and restoration

Source: https://registry.khronos.org/webgl/specs/latest/1.0/

Illustrates a complete application pattern for handling context loss and restoration. It stops rendering on context loss and reinitializes resources on context restoration.

```JavaScript
function initializeGame() {
  initializeWorld();
  initializeResources();
}

function initializeResources() {
  initializeShaders();
  initializeBuffers();
  initializeTextures();

  // ready to draw, start the main loop
  renderFrame();
}

function renderFrame() {
  updateWorld();
  drawSkyBox();
  drawWalls();
  drawMonsters();

  requestId = window.requestAnimationFrame(
      renderFrame, canvas);
}

canvas.addEventListener(
    "webglcontextlost", function (event) {

  // inform WebGL that we handle context restoration
  event.preventDefault();

  // Stop rendering
  window.cancelAnimationFrame(requestId);
}, false);

canvas.addEventListener(
    "webglcontextrestored", function (event) {

  initializeResources();
}, false);

initializeGame();
```

--------------------------------

### bufferData (overload 1)

Source: https://registry.khronos.org/webgl/specs/latest/1.0/

Creates and initializes a buffer object's data store with a specified size.

```APIDOC
## bufferData (overload 1)

### Description
Creates and initializes a buffer object's data store with a specified size.

### Method
bufferData

### Signature
undefined bufferData(GLenum target, GLsizeiptr size, GLenum usage);

### Parameters
- **target** (GLenum) - Required - The target buffer object (e.g., ARRAY_BUFFER).
- **size** (GLsizeiptr) - Required - The size in bytes of the buffer object's data store.
- **usage** (GLenum) - Required - The usage pattern of the data store.

```

--------------------------------

### compressedTexSubImage3D (ArrayBufferView version)

Source: https://registry.khronos.org/webgl/specs/latest/2.0/

Uploads a sub-volume of compressed texture data from an ArrayBufferView. The source data is read starting at srcOffset elements into srcData, with an optional srcLengthOverride.

```APIDOC
## compressedTexSubImage3D

### Description
Uploads a sub-volume of compressed texture data from an ArrayBufferView. The source data is read starting at srcOffset elements into srcData, with an optional srcLengthOverride.

### Method
undefined

### Signature
compressedTexSubImage3D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, [AllowShared] ArrayBufferView srcData, optional unsigned long long srcOffset = 0, optional GLuint srcLengthOverride = 0)

### Parameters
- **target** (GLenum) - Required - Specifies the target texture.
- **level** (GLint) - Required - Specifies the level-of-detail number.
- **xoffset** (GLint) - Required - Specifies the x offset in the texture.
- **yoffset** (GLint) - Required - Specifies the y offset in the texture.
- **zoffset** (GLint) - Required - Specifies the z offset in the texture.
- **width** (GLsizei) - Required - Specifies the width of the texture sub-image.
- **height** (GLsizei) - Required - Specifies the height of the texture sub-image.
- **depth** (GLsizei) - Required - Specifies the depth of the texture sub-image.
- **format** (GLenum) - Required - Specifies the format of the compressed data.
- **srcData** (ArrayBufferView) - Required - The source data buffer.
- **srcOffset** (unsigned long long) - Optional - Offset into srcData (in elements). Defaults to 0.
- **srcLengthOverride** (GLuint) - Optional - Overrides the number of elements to read. Defaults to srcData.length - srcOffset.

### Errors
- If srcOffset > srcData.length, generates INVALID_VALUE.
- If there is not enough data in srcData starting at srcOffset, or if the amount of data is inconsistent with the format, dimensions, and contents of the compressed image, generates INVALID_VALUE.
- If no WebGLTexture is bound, generates INVALID_OPERATION.
- If a WebGLBuffer is bound to PIXEL_UNPACK_BUFFER, generates INVALID_OPERATION.

### Notes
- The ETC2 and EAC texture formats are not available in WebGL 2.0.
```

--------------------------------

### beginTransformFeedback

Source: https://registry.khronos.org/webgl/specs/latest/2.0/

Begins transform feedback with the specified primitive mode.

```APIDOC
## beginTransformFeedback

### Description
Begins transform feedback with the given primitive mode.

### Method
void beginTransformFeedback(GLenum primitiveMode)

### Parameters
- **primitiveMode** (GLenum) - Required - The primitive mode for transform feedback.
```

--------------------------------

### compressedTexImage3D (ArrayBufferView version)

Source: https://registry.khronos.org/webgl/specs/latest/2.0/

Uploads a 3D compressed texture image from an ArrayBufferView. The source data is read starting at srcOffset elements into srcData, with an optional srcLengthOverride.

```APIDOC
## compressedTexImage3D

### Description
Uploads a 3D compressed texture image from an ArrayBufferView. The source data is read starting at srcOffset elements into srcData, with an optional srcLengthOverride.

### Method
undefined

### Signature
compressedTexImage3D(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, [AllowShared] ArrayBufferView srcData, optional unsigned long long srcOffset = 0, optional GLuint srcLengthOverride = 0)

### Parameters
- **target** (GLenum) - Required - Specifies the target texture.
- **level** (GLint) - Required - Specifies the level-of-detail number.
- **internalformat** (GLenum) - Required - Specifies the internal format of the texture.
- **width** (GLsizei) - Required - Specifies the width of the texture.
- **height** (GLsizei) - Required - Specifies the height of the texture.
- **depth** (GLsizei) - Required - Specifies the depth of the texture.
- **border** (GLint) - Required - Must be 0.
- **srcData** (ArrayBufferView) - Required - The source data buffer.
- **srcOffset** (unsigned long long) - Optional - Offset into srcData (in elements). Defaults to 0.
- **srcLengthOverride** (GLuint) - Optional - Overrides the number of elements to read. Defaults to srcData.length - srcOffset.

### Errors
- If srcOffset > srcData.length, generates INVALID_VALUE.
- If there is not enough data in srcData starting at srcOffset, or if the amount of data is inconsistent with the format, dimensions, and contents of the compressed image, generates INVALID_VALUE.
- If no WebGLTexture is bound, generates INVALID_OPERATION.
- If a WebGLBuffer is bound to PIXEL_UNPACK_BUFFER, generates INVALID_OPERATION.

### Notes
- The ETC2 and EAC texture formats are not available in WebGL 2.0.
```

--------------------------------

### compressedTexSubImage2D (ArrayBufferView version)

Source: https://registry.khronos.org/webgl/specs/latest/2.0/

Uploads a sub-rectangle of compressed texture data from an ArrayBufferView. The source data is read starting at srcOffset elements into srcData, with an optional srcLengthOverride.

```APIDOC
## compressedTexSubImage2D

### Description
Uploads a sub-rectangle of compressed texture data from an ArrayBufferView. The source data is read starting at srcOffset elements into srcData, with an optional srcLengthOverride.

### Method
undefined

### Signature
compressedTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, [AllowShared] ArrayBufferView srcData, optional unsigned long long srcOffset = 0, optional GLuint srcLengthOverride = 0)

### Parameters
- **target** (GLenum) - Required - Specifies the target texture.
- **level** (GLint) - Required - Specifies the level-of-detail number.
- **xoffset** (GLint) - Required - Specifies the x offset in the texture.
- **yoffset** (GLint) - Required - Specifies the y offset in the texture.
- **width** (GLsizei) - Required - Specifies the width of the texture sub-image.
- **height** (GLsizei) - Required - Specifies the height of the texture sub-image.
- **format** (GLenum) - Required - Specifies the format of the compressed data.
- **srcData** (ArrayBufferView) - Required - The source data buffer.
- **srcOffset** (unsigned long long) - Optional - Offset into srcData (in elements). Defaults to 0.
- **srcLengthOverride** (GLuint) - Optional - Overrides the number of elements to read. Defaults to srcData.length - srcOffset.

### Errors
- If srcOffset > srcData.length, generates INVALID_VALUE.
- If there is not enough data in srcData starting at srcOffset, or if the amount of data is inconsistent with the format, dimensions, and contents of the compressed image, generates INVALID_VALUE.
- If no WebGLTexture is bound, generates INVALID_OPERATION.
- If a WebGLBuffer is bound to PIXEL_UNPACK_BUFFER, generates INVALID_OPERATION.

### Notes
- The ETC2 and EAC texture formats are not available in WebGL 2.0.
```

--------------------------------

### void enable(GLenum cap)

Source: https://registry.khronos.org/webgl/specs/latest/1.0/

Enables a server-side GL capability.

```APIDOC
## void enable(GLenum cap)

### Description
Enables a server-side GL capability.

### Method
void enable(GLenum cap)

### Parameters
- **cap** (GLenum) - Required - The capability to enable. Possible values include: BLEND, CULL_FACE, DEPTH_TEST, DITHER, POLYGON_OFFSET_FILL, SAMPLE_ALPHA_TO_COVERAGE, SAMPLE_COVERAGE, SCISSOR_TEST, STENCIL_TEST.

### References
- [man page](https://registry.khronos.org/OpenGL-Refpages/es2.0/xhtml/glEnable.xml)
```

--------------------------------

### texImage3D (ArrayBufferView with offset)

Source: https://registry.khronos.org/webgl/specs/latest/2.0/

Specifies a 3D texture image from an ArrayBufferView with a source offset. This method is used to upload texture data from a typed array starting at a given offset.

```APIDOC
## texImage3D (ArrayBufferView with offset)

### Description
Specifies a 3D texture image from an ArrayBufferView with a source offset. This method is used to upload texture data from a typed array starting at a given offset.

### Method
undefined

### Parameters
- **target** (GLenum) - Required - The texture target.
- **level** (GLint) - Required - The mipmap level.
- **internalformat** (GLint) - Required - The internal format of the texture.
- **width** (GLsizei) - Required - The width of the texture.
- **height** (GLsizei) - Required - The height of the texture.
- **depth** (GLsizei) - Required - The depth of the texture.
- **border** (GLint) - Required - The border width (must be 0).
- **format** (GLenum) - Required - The format of the pixel data.
- **type** (GLenum) - Required - The type of the pixel data.
- **srcData** ([AllowShared] ArrayBufferView) - Required - The source data.
- **srcOffset** (unsigned long long) - Required - The offset into the source data.

### Returns
undefined
```

--------------------------------

### beginQuery

Source: https://registry.khronos.org/webgl/specs/latest/2.0/

Begins an asynchronous query. The target indicates the type of query to be performed.

```APIDOC
## beginQuery

### Description
Begin an asynchronous query. _Target_ indicates the type of query to be performed.

### Method
beginQuery

### Parameters
- **target** (GLenum) - Required - The type of query to begin.
- **query** (WebGLQuery) - Required - The query object to use.

### Errors
- INVALID_OPERATION - If `query` was generated by a different WebGL2RenderingContext than this one.
```

--------------------------------

### enable

Source: https://registry.khronos.org/webgl/specs/latest/1.0/

Enables a WebGL capability.

```APIDOC
## enable

### Description
Enables a WebGL capability.

### Method
enable

### Signature
undefined enable(GLenum cap);

### Parameters
- **cap** (GLenum) - Required - Specifies a WebGL capability.

### Returns
undefined
```

--------------------------------

### bufferSubData

Source: https://registry.khronos.org/webgl/specs/latest/1.0/

Writes data to a subrange of the currently bound WebGLBuffer object starting at the given offset. Generates INVALID_VALUE if data would be written past the end of the buffer or if data is null.

```APIDOC
## bufferSubData

### Description
Writes data to a subrange of the currently bound WebGLBuffer object starting at the given offset. Generates INVALID_VALUE if data would be written past the end of the buffer or if data is null.

### Method
bufferSubData

### Signature
void bufferSubData(GLenum target, GLintptr offset, AllowSharedBufferSource data)

### Parameters
- **target** (GLenum) - Required - The binding point (ARRAY_BUFFER or ELEMENT_ARRAY_BUFFER).
- **offset** (GLintptr) - Required - The offset in bytes from the start of the buffer.
- **data** (AllowSharedBufferSource) - Required - The data to write.

### Errors
- INVALID_VALUE - If data would be written past the end of the buffer.
- INVALID_VALUE - If data is null.
```

--------------------------------

### linkProgram

Source: https://registry.khronos.org/webgl/specs/latest/1.0/

Links the passed program object. Affects the program's link status and internal executable code. If the program is currently in use, successful linking installs the executable code; unsuccessful linking invalidates it.

```APIDOC
## linkProgram

### Description
Links the passed program object. Affects the program's link status and internal executable code. If the program is currently in use, successful linking installs the executable code; unsuccessful linking invalidates it.

### Method
void

### Parameters
- **program** (WebGLProgram) - Required - The program object to link.

### Errors
- If the program is not linked successfully and is currently in use, subsequent draw calls generate an `INVALID_OPERATION` error.

### Notes
- See [Packing Restrictions for Uniforms and Varyings](https://registry.khronos.org/webgl/specs/latest/1.0/#PACKING_RESTRICTIONS) for additional constraints.
```

--------------------------------

### stencilOp

Source: https://registry.khronos.org/webgl/specs/latest/1.0/

Sets the front and back stencil test actions.

```APIDOC
## stencilOp

### Description
Sets the front and back stencil test actions.

### Method
stencilOp

### Signature
undefined stencilOp(GLenum fail, GLenum zfail, GLenum zpass);

### Parameters
- **fail** (GLenum) - Required - Specifies the action when the stencil test fails.
- **zfail** (GLenum) - Required - Specifies the action when the depth test fails.
- **zpass** (GLenum) - Required - Specifies the action when the depth test passes.

### Returns
undefined
```

--------------------------------

### getSupportedExtensions

Source: https://registry.khronos.org/webgl/specs/latest/1.0/

Returns the list of supported extensions. In WebGL, the EXTENSIONS enumerant is removed; use this method instead of glGetString(GL_EXTENSIONS).

```APIDOC
## getSupportedExtensions

### Description
Returns the list of supported extensions. In WebGL, the EXTENSIONS enumerant is removed; use this method instead of glGetString(GL_EXTENSIONS).

### Method
getSupportedExtensions

### Returns
- **sequence<DOMString>** - A list of supported extension strings.
```

--------------------------------

### texImage3D(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, [AllowShared] ArrayBufferView srcData, unsigned long long srcOffset)

Source: https://registry.khronos.org/webgl/specs/latest/2.0/

Allocates and initializes the specified mipmap level of a three-dimensional or two-dimensional array texture using pixel data from an ArrayBufferView, starting at a specified offset.

```APIDOC
## texImage3D(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, [AllowShared] ArrayBufferView srcData, unsigned long long srcOffset)

### Description
Allocates and initializes the specified mipmap level of a three-dimensional or two-dimensional array texture. Reading from srcData begins srcOffset elements into srcData.

### Method
void texImage3D(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, [AllowShared] ArrayBufferView srcData, unsigned long long srcOffset)

### Parameters
- **target** (GLenum) - Required - Specifies the texture target.
- **level** (GLint) - Required - Specifies the level-of-detail number.
- **internalformat** (GLenum) - Required - Specifies the internal format of the texture.
- **width** (GLsizei) - Required - Specifies the width of the texture image.
- **height** (GLsizei) - Required - Specifies the height of the texture image.
- **depth** (GLsizei) - Required - Specifies the depth of the texture image.
- **border** (GLint) - Required - Specifies the width of the border. Must be 0.
- **format** (GLenum) - Required - Specifies the format of the pixel data.
- **type** (GLenum) - Required - Specifies the data type of the pixel data.
- **srcData** ([AllowShared] ArrayBufferView) - Required - Specifies a pointer to the image data in memory.
- **srcOffset** (unsigned long long) - Required - Specifies the offset into srcData where reading begins. Elements are bytes for Uint8Array, int32s for Int32Array, etc.

### Errors
- Generates INVALID_OPERATION if a WebGLBuffer is bound to the PIXEL_UNPACK_BUFFER target.
- Generates INVALID_OPERATION if the combination of internalformat, format, and type is not listed in Table 1 or 2 from the man page.
- Generates INVALID_OPERATION if type is FLOAT_32_UNSIGNED_INT_24_8_REV and srcData is non-null.
- Generates INVALID_OPERATION if srcData is non-null and its type does not match the type according to the above table.
- Generates INVALID_OPERATION if no WebGLTexture is bound.
- Generates INVALID_OPERATION if pixel store parameter constraints are not met.
- Generates INVALID_OPERATION if there is not enough data in srcData starting at srcOffset.

### Notes
- It is recommended to use texStorage3D instead of texImage3D to allocate three-dimensional textures.
```

--------------------------------

### hint

Source: https://registry.khronos.org/webgl/specs/latest/1.0/

Specifies implementation-specific hints.

```APIDOC
## hint

### Description
Specifies implementation-specific hints.

### Method
hint

### Signature
undefined hint(GLenum target, GLenum mode);

### Parameters
- **target** (GLenum) - Required - Specifies the hint target.
- **mode** (GLenum) - Required - Specifies the hint mode.

### Returns
undefined
```

--------------------------------

### sampleCoverage(GLclampf value, GLboolean invert)

Source: https://registry.khronos.org/webgl/specs/latest/1.0/index.html

Sets the sample coverage parameters for multisample rendering.

```APIDOC
## sampleCoverage(GLclampf value, GLboolean invert)

### Description
Sets the sample coverage parameters for multisample rendering.

### Method
void sampleCoverage(GLclampf value, GLboolean invert)

### Parameters
- **value** (GLclampf) - Required - Specifies the coverage value.
- **invert** (GLboolean) - Required - Specifies whether to invert the coverage mask.
```

--------------------------------

### useProgram

Source: https://registry.khronos.org/webgl/specs/latest/1.0/

Sets the active program object for the rendering pipeline.

```APIDOC
## useProgram

### Description
Sets the active program object for the rendering pipeline.

### Method
useProgram

### Signature
undefined useProgram(WebGLProgram? program);

### Parameters
- **program** (WebGLProgram?) - Required - The program object to use.

```

--------------------------------

### bufferData (overload 2)

Source: https://registry.khronos.org/webgl/specs/latest/1.0/index.html

Creates and initializes a buffer object's data store using data from a buffer source.

```APIDOC
## bufferData (overload 2)

### Description
Creates and initializes a buffer object's data store using data from a buffer source.

### Method
undefined

### Signature
`undefined bufferData(GLenum target, AllowSharedBufferSource? data, GLenum usage);`

### Parameters
- **target** (GLenum) - Required - The target buffer object.
- **data** (AllowSharedBufferSource?) - Optional - The data to copy into the buffer object's data store.
- **usage** (GLenum) - Required - The usage pattern of the data store.
```

--------------------------------

### fenceSync

Source: https://registry.khronos.org/webgl/specs/latest/2.0/

Creates a new fence sync object and inserts an associated fence command into the GL command stream.

```APIDOC
## fenceSync

### Description
Creates a new fence sync object and inserts an associated fence command into the GL command stream.

### Method
fenceSync

### Parameters
- **condition** (GLenum) - Required - The condition for the sync object.
- **flags** (GLbitfield) - Required - Flags controlling the sync object creation.

### Returns
- **WebGLSync?** - The newly created sync object, or null if creation fails.

### Errors
- If the context is lost, returns null.

### Reference
- [OpenGL ES 3.0.6 §5.2](https://www.khronos.org/registry/OpenGL/specs/es/3.0/es_spec_3.0.pdf#nameddest=section.5.2)
- [Man page](https://registry.khronos.org/OpenGL-Refpages/es3.0/html/glFenceSync.xhtml)
```

--------------------------------

### bufferData (overload 2)

Source: https://registry.khronos.org/webgl/specs/latest/1.0/

Creates and initializes a buffer object's data store from an array of data.

```APIDOC
## bufferData (overload 2)

### Description
Creates and initializes a buffer object's data store from an array of data.

### Method
bufferData

### Signature
undefined bufferData(GLenum target, AllowSharedBufferSource? data, GLenum usage);

### Parameters
- **target** (GLenum) - Required - The target buffer object.
- **data** (AllowSharedBufferSource?) - Required - The data to copy into the buffer.
- **usage** (GLenum) - Required - The usage pattern of the data store.

```

--------------------------------

### createSampler

Source: https://registry.khronos.org/webgl/specs/latest/2.0/

Creates a new WebGLSampler object and initializes it with a sampler object name.

```APIDOC
## createSampler

### Description
Creates a new WebGLSampler object and initializes it with a sampler object name as if by calling glGenSamplers.

### Method
createSampler

### Endpoint
WebGL2RenderingContext.createSampler()

### Parameters
None.

### Return Value
- **WebGLSampler** - The newly created sampler object.

### Errors
None specified.
```
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