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node_modules/three/src/renderers/webgl/WebGLBufferRenderer.js

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+function WebGLBufferRenderer( gl, extensions, info ) {
+
+	let mode;
+
+	function setMode( value ) {
+
+		mode = value;
+
+	}
+
+	function render( start, count ) {
+
+		gl.drawArrays( mode, start, count );
+
+		info.update( count, mode, 1 );
+
+	}
+
+	function renderInstances( start, count, primcount ) {
+
+		if ( primcount === 0 ) return;
+
+		gl.drawArraysInstanced( mode, start, count, primcount );
+
+		info.update( count, mode, primcount );
+
+	}
+
+	function renderMultiDraw( starts, counts, drawCount ) {
+
+		if ( drawCount === 0 ) return;
+
+		const extension = extensions.get( 'WEBGL_multi_draw' );
+		extension.multiDrawArraysWEBGL( mode, starts, 0, counts, 0, drawCount );
+
+		let elementCount = 0;
+		for ( let i = 0; i < drawCount; i ++ ) {
+
+			elementCount += counts[ i ];
+
+		}
+
+		info.update( elementCount, mode, 1 );
+
+	}
+
+	function renderMultiDrawInstances( starts, counts, drawCount, primcount ) {
+
+		if ( drawCount === 0 ) return;
+
+		const extension = extensions.get( 'WEBGL_multi_draw' );
+
+		if ( extension === null ) {
+
+			for ( let i = 0; i < starts.length; i ++ ) {
+
+				renderInstances( starts[ i ], counts[ i ], primcount[ i ] );
+
+			}
+
+		} else {
+
+			extension.multiDrawArraysInstancedWEBGL( mode, starts, 0, counts, 0, primcount, 0, drawCount );
+
+			let elementCount = 0;
+			for ( let i = 0; i < drawCount; i ++ ) {
+
+				elementCount += counts[ i ] * primcount[ i ];
+
+			}
+
+			info.update( elementCount, mode, 1 );
+
+		}
+
+	}
+
+	//
+
+	this.setMode = setMode;
+	this.render = render;
+	this.renderInstances = renderInstances;
+	this.renderMultiDraw = renderMultiDraw;
+	this.renderMultiDrawInstances = renderMultiDrawInstances;
+
+}
+
+
+export { WebGLBufferRenderer };