<p>buffer - Uint8Array is the only destination type supported in all cases, other types are renderTarget and platform dependent. See [link:https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.12 WebGL spec] for details.</p>
<p>Reads the pixel data from the renderTarget into the buffer you pass in. This is a wrapper around [link:https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/readPixels WebGLRenderingContext.readPixels]().</p>
<p>See the [example:webgl_interactive_cubes_gpu interactive / cubes / gpu] example.</p>
<p>For reading out a [page:WebGLRenderTargetCube WebGLRenderTargetCube] use the optional parameter activeCubeFaceIndex to determine which face should be read.</p>
<p>For reading out a [page:WebGLCubeRenderTarget WebGLCubeRenderTarget] use the optional parameter activeCubeFaceIndex to determine which face should be read.</p>
renderTarget -- The [page:WebGLRenderTarget renderTarget] that needs to be activated. When *null* is given, the canvas is set as the active render target instead.<br/>
activeCubeFace -- Specifies the active cube side (PX 0, NX 1, PY 2, NY 3, PZ 4, NZ 5) of [page:WebGLRenderTargetCube] (optional).<br/>
activeCubeFace -- Specifies the active cube side (PX 0, NX 1, PY 2, NY 3, PZ 4, NZ 5) of [page:WebGLCubeRenderTarget] (optional).<br/>
activeMipmapLevel -- Specifies the active mipmap level (optional).<br/><br/>
If not null, sets the background used when rendering the scene, and is always rendered first. Can be set to a [page:Color] which sets the clear color, a [page:Texture] covering the canvas, or a cubemap as a [page:CubeTexture] or [page:WebGLRenderTargetCube]. Default is null.
If not null, sets the background used when rendering the scene, and is always rendered first. Can be set to a [page:Color] which sets the clear color, a [page:Texture] covering the canvas, or a cubemap as a [page:CubeTexture] or [page:WebGLCubeRenderTarget]. Default is null.
<p>buffer - Uint8Array is the only destination type supported in all cases, other types are renderTarget and platform dependent. See [link:https://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.12 WebGL spec] for details.</p>
<p>For reading out a [page:WebGLRenderTargetCube WebGLRenderTargetCube] use the optional parameter activeCubeFaceIndex to determine which face should be read.</p>
<p>For reading out a [page:WebGLCubeRenderTarget WebGLCubeRenderTarget] use the optional parameter activeCubeFaceIndex to determine which face should be read.</p>
@@ -387,7 +387,7 @@ export class WebGLRenderer implements Renderer {
* Sets the active render target.
*
* @param renderTarget The {@link WebGLRenderTarget renderTarget} that needs to be activated. When `null` is given, the canvas is set as the active render target instead.
* @param activeCubeFace Specifies the active cube side (PX 0, NX 1, PY 2, NY 3, PZ 4, NZ 5) of {@link WebGLRenderTargetCube}.
* @param activeCubeFace Specifies the active cube side (PX 0, NX 1, PY 2, NY 3, PZ 4, NZ 5) of {@link WebGLCubeRenderTarget}.
* @param activeMipmapLevel Specifies the active mipmap level.
