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103 lines
2.1 KiB
103 lines
2.1 KiB
2 years ago
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import { GPULoadOp } from './constants.js';
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import { Color } from 'three';
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let _clearAlpha;
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const _clearColor = new Color();
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class WebGPUBackground {
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constructor( renderer ) {
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this.renderer = renderer;
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this.forceClear = false;
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}
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clear() {
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this.forceClear = true;
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}
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update( scene ) {
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const renderer = this.renderer;
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const background = ( scene.isScene === true ) ? scene.background : null;
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let forceClear = this.forceClear;
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if ( background === null ) {
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// no background settings, use clear color configuration from the renderer
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_clearColor.copy( renderer._clearColor );
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_clearAlpha = renderer._clearAlpha;
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} else if ( background.isColor === true ) {
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// background is an opaque color
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_clearColor.copy( background );
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_clearAlpha = 1;
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forceClear = true;
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} else {
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console.error( 'THREE.WebGPURenderer: Unsupported background configuration.', background );
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}
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// configure render pass descriptor
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const renderPassDescriptor = renderer._renderPassDescriptor;
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const colorAttachment = renderPassDescriptor.colorAttachments[ 0 ];
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const depthStencilAttachment = renderPassDescriptor.depthStencilAttachment;
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if ( renderer.autoClear === true || forceClear === true ) {
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if ( renderer.autoClearColor === true ) {
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colorAttachment.loadValue = { r: _clearColor.r, g: _clearColor.g, b: _clearColor.b, a: _clearAlpha };
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} else {
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colorAttachment.loadValue = GPULoadOp.Load;
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}
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if ( renderer.autoClearDepth === true ) {
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depthStencilAttachment.depthLoadValue = renderer._clearDepth;
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} else {
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depthStencilAttachment.depthLoadValue = GPULoadOp.Load;
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}
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if ( renderer.autoClearStencil === true ) {
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depthStencilAttachment.stencilLoadValue = renderer._clearDepth;
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} else {
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depthStencilAttachment.stencilLoadValue = GPULoadOp.Load;
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}
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} else {
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colorAttachment.loadValue = GPULoadOp.Load;
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depthStencilAttachment.depthLoadValue = GPULoadOp.Load;
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depthStencilAttachment.stencilLoadValue = GPULoadOp.Load;
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}
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this.forceClear = false;
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}
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}
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export default WebGPUBackground;
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