WebGPURenderer: Add .outputType backend parameter (#30320)

src/renderers/webgpu/WebGPUBackend.js

@@ -38,6 +38,7 @@ class WebGPUBackend extends Backend {
 	 * @param {String} [parameters.powerPreference=undefined] - The power preference.
 	 * @param {Object} [parameters.requiredLimits=undefined] - Specifies the limits that are required by the device request. The request will fail if the adapter cannot provide these limits.
 	 * @param {GPUDevice} [parameters.device=undefined] - If there is an existing GPU device on app level, it can be passed to the renderer as a parameter.
+	 * @param {Number} [parameters.outputType=undefined] - Texture type for output to canvas. By default, device's preferred format is used; other formats may incur overhead.
 	 */
 	constructor( parameters = {} ) {
 

src/renderers/webgpu/WebGPURenderer.js

@@ -37,6 +37,7 @@ class WebGPURenderer extends Renderer {
 	 * @param {Boolean} [parameters.antialias=false] - Whether MSAA as the default anti-aliasing should be enabled or not.
 	 * @param {Number} [parameters.samples=0] - When `antialias` is `true`, `4` samples are used by default. Set this parameter to any other integer value than 0 to overwrite the default.
 	 * @param {Boolean} [parameters.forceWebGL=false] - If set to `true`, the renderer uses a WebGL 2 backend no matter if WebGPU is supported or not.
+	 * @param {Number} [parameters.outputType=undefined] - Texture type for output to canvas. By default, device's preferred format is used; other formats may incur overhead.
 	 */
 	constructor( parameters = {} ) {
 

src/renderers/webgpu/utils/WebGPUUtils.js

@@ -1,3 +1,4 @@
+import { HalfFloatType, UnsignedByteType } from '../../../constants.js';
 import { GPUPrimitiveTopology, GPUTextureFormat } from './WebGPUConstants.js';
 
 /**
@@ -214,16 +215,23 @@ class WebGPUUtils {
 	 */
 	getPreferredCanvasFormat() {
 
-		// TODO: Remove this check when Quest 34.5 is out
-		// https://github.com/mrdoob/three.js/pull/29221/files#r1731833949
+		const outputType = this.backend.parameters.outputType;
 
-		if ( navigator.userAgent.includes( 'Quest' ) ) {
+		if ( outputType === undefined ) {
+
+			return navigator.gpu.getPreferredCanvasFormat();
+
+		} else if ( outputType === UnsignedByteType ) {
 
 			return GPUTextureFormat.BGRA8Unorm;
 
+		} else if ( outputType === HalfFloatType ) {
+
+			return GPUTextureFormat.RGBA16Float;
+
 		} else {
 
-			return navigator.gpu.getPreferredCanvasFormat();
+			throw new Error( 'Unsupported outputType' );
 
 		}