Function buildProgram

webgl/js/three.min.js:20511–20796

( shaderID, fragmentShader, vertexShader, uniforms, attributes, parameters )

	// Shaders

	function buildProgram ( shaderID, fragmentShader, vertexShader, uniforms, attributes, parameters ) {

		var p, pl, program, code;
		var chunks = [];

		// Generate code

		if ( shaderID ) {

			chunks.push( shaderID );

		} else {

			chunks.push( fragmentShader );
			chunks.push( vertexShader );

		}

		for ( p in parameters ) {

			chunks.push( p );
			chunks.push( parameters[ p ] );

		}

		code = chunks.join();

		// Check if code has been already compiled

		for ( p = 0, pl = _programs.length; p < pl; p ++ ) {

			var programInfo = _programs[ p ];

			if ( programInfo.code === code ) {

				// console.log( "Code already compiled." /*: \n\n" + code*/ );

				programInfo.usedTimes ++;

				return programInfo.program;

			}

		}

		//console.log( "building new program " );

		//

		program = _gl.createProgram();

		var prefix_vertex = [

			"precision " + _precision + " float;",

			_supportsVertexTextures ? "#define VERTEX_TEXTURES" : "",

			_this.gammaInput ? "#define GAMMA_INPUT" : "",