glam/es5/lib/renderer/forward/update-shaders.js

Experimental WebGL Engine

'use strict';

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

var _glGeometry = require('gl-geometry');

var _glGeometry2 = _interopRequireDefault(_glGeometry);

var _buildDefines = require('./build-defines');

var _buildDefines2 = _interopRequireDefault(_buildDefines);

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

function updateShaders(gl, shaderCache, meshes, lights, scene) {

	if (scene.flags.changed) {
		shaderCache.clearMeshes();
	}

	var _loop = function _loop(i) {

		var mesh = meshes[i];
		var material = mesh.material;
		var geometry = mesh.geometry;

		// Recompile flag
		if (material && (material.flags.recompile || scene.flags.lightsChanged)) {

			var defines = (0, _buildDefines2.default)(material, scene);

			material.shader = shaderCache.getOrCreate(gl, mesh, defines);
			material.flags.recompile = false;
		}

		// Update buffers
		if (geometry && geometry.flags.updateBuffers) {

			if (geometry.buffers) {
				// TODO
				// geometry.buffers.update()
			} else {
					geometry.buffers = (0, _glGeometry2.default)(gl);
					material.setAttributes.forEach(function (fn) {
						return fn(geometry, material.shader);
					});
				}
		}
	};

	for (var i = 0; i < meshes.length; i++) {
		_loop(i);
	}

	if (scene.flags.changed) {
		shaderCache.clearUnused();
	}
}