glam/es5/lib/renderer/shader-cache/get-or-create.js

Experimental WebGL Engine

'use strict';

Object.defineProperty(exports, "__esModule", {
	value: true
});
exports.default = createShaderOrGetCached;

var _glShader = require('gl-shader');

var _glShader2 = _interopRequireDefault(_glShader);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function createShaderOrGetCached(cache, gl, mesh, defines) {

	var material = mesh.material;
	var key = defines + material.vertSource + material.fragSource;
	var cachedEntry = cache[key];

	var shader = undefined;

	if (cachedEntry) {

		shader = cachedEntry.shader;
		cachedEntry.meshes.push(mesh);
	} else {

		// Create and cache the shader
		shader = (0, _glShader2.default)(gl, defines + material.vertSource, defines + material.fragSource);

		cache[key] = {
			shader: shader,
			meshes: [mesh]
		};
	}

	return shader;
}