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75 lines
1.3 KiB
JavaScript
75 lines
1.3 KiB
JavaScript
import ChainMap from './ChainMap.js';
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import RenderContext from './RenderContext.js';
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class RenderContexts {
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constructor() {
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this.chainMaps = {};
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}
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get( scene, camera, renderTarget = null ) {
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const chainKey = [ scene, camera ];
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let attachmentState;
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if ( renderTarget === null ) {
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attachmentState = 'default';
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} else {
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let format, count;
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if ( renderTarget.isWebGLMultipleRenderTargets ) {
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format = renderTarget.texture[ 0 ].format;
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count = renderTarget.texture.length;
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} else {
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format = renderTarget.texture.format;
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count = 1;
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}
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attachmentState = `${count}:${format}:${renderTarget.samples}:${renderTarget.depthBuffer}:${renderTarget.stencilBuffer}`;
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}
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const chainMap = this.getChainMap( attachmentState );
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let renderState = chainMap.get( chainKey );
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if ( renderState === undefined ) {
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renderState = new RenderContext();
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chainMap.set( chainKey, renderState );
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}
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if ( renderTarget !== null ) renderState.sampleCount = renderTarget.samples === 0 ? 1 : renderTarget.samples;
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return renderState;
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}
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getChainMap( attachmentState ) {
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return this.chainMaps[ attachmentState ] || ( this.chainMaps[ attachmentState ] = new ChainMap() );
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}
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dispose() {
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this.chainMaps = {};
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}
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}
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export default RenderContexts;
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