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108 lines
2.6 KiB
108 lines
2.6 KiB
import { InputNode } from '../core/InputNode.js';
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import { ReflectNode } from '../accessors/ReflectNode.js';
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import { ColorSpaceNode } from '../utils/ColorSpaceNode.js';
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import { ExpressionNode } from '../core/ExpressionNode.js';
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class CubeTextureNode extends InputNode {
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constructor( value, uv, bias ) {
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super( 'v4', { shared: true } );
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this.value = value;
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this.uv = uv || new ReflectNode();
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this.bias = bias;
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}
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getTexture( builder, output ) {
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return super.generate( builder, output, this.value.uuid, 'tc' );
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}
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generate( builder, output ) {
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if ( output === 'samplerCube' ) {
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return this.getTexture( builder, output );
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}
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const cubetex = this.getTexture( builder, output );
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const uv = this.uv.build( builder, 'v3' );
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let bias = this.bias ? this.bias.build( builder, 'f' ) : undefined;
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if ( bias === undefined && builder.context.bias ) {
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bias = builder.context.bias.setTexture( this ).build( builder, 'f' );
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}
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let code;
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if ( bias ) code = 'texCubeBias( ' + cubetex + ', ' + uv + ', ' + bias + ' )';
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else code = 'texCube( ' + cubetex + ', ' + uv + ' )';
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// add a custom context for fix incompatibility with the core
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// include ColorSpace function only for vertex shader (in fragment shader color space functions is added automatically by core)
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// this should be removed in the future
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// context.include =: is used to include or not functions if used FunctionNode
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// context.ignoreCache =: not create variables temp nodeT0..9 to optimize the code
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const context = { include: builder.isShader( 'vertex' ), ignoreCache: true };
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const outputType = this.getType( builder );
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builder.addContext( context );
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this.colorSpace = this.colorSpace || new ColorSpaceNode( new ExpressionNode( '', outputType ) );
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this.colorSpace.fromDecoding( builder.getTextureEncodingFromMap( this.value ) );
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this.colorSpace.input.parse( code );
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code = this.colorSpace.build( builder, outputType );
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// end custom context
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builder.removeContext();
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return builder.format( code, outputType, output );
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}
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copy( source ) {
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super.copy( source );
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if ( source.value ) this.value = source.value;
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this.uv = source.uv;
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if ( source.bias ) this.bias = source.bias;
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return this;
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}
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toJSON( meta ) {
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let data = this.getJSONNode( meta );
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if ( ! data ) {
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data = this.createJSONNode( meta );
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data.value = this.value.uuid;
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data.uv = this.uv.toJSON( meta ).uuid;
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if ( this.bias ) data.bias = this.bias.toJSON( meta ).uuid;
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}
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return data;
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}
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}
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CubeTextureNode.prototype.nodeType = 'CubeTexture';
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export { CubeTextureNode };
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