diff --git a/lines.js b/lines.js
index 682dee7..6d5d4ba 100644
--- a/lines.js
+++ b/lines.js
@@ -5,7 +5,18 @@ module.exports = createLinePlot
 var createBuffer = require('gl-buffer')
 var createVAO = require('gl-vao')
 var createTexture = require('gl-texture2d')
-var unpackFloat = require('glsl-read-float')
+
+var UINT8_VIEW = new Uint8Array(4)
+var FLOAT_VIEW = new Float32Array(UINT8_VIEW.buffer)
+// https://github.com/mikolalysenko/glsl-read-float/blob/master/index.js
+function unpackFloat(x, y, z, w) {
+  UINT8_VIEW[0] = w
+  UINT8_VIEW[1] = z
+  UINT8_VIEW[2] = y
+  UINT8_VIEW[3] = x
+  return FLOAT_VIEW[0]
+}
+
 var bsearch = require('binary-search-bounds')
 var ndarray = require('ndarray')
 var shaders = require('./lib/shaders')
diff --git a/package-lock.json b/package-lock.json
index 5d05be1..0d945ed 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -87,9 +87,9 @@
           "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
         },
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-          "version": "2.3.6",
-          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
-          "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
+          "version": "2.3.7",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.7.tgz",
+          "integrity": "sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==",
           "requires": {
             "core-util-is": "~1.0.0",
             "inherits": "~2.0.3",
@@ -98,6 +98,13 @@
             "safe-buffer": "~5.1.1",
             "string_decoder": "~1.1.1",
             "util-deprecate": "~1.0.1"
+          },
+          "dependencies": {
+            "safe-buffer": {
+              "version": "5.1.2",
+              "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+              "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
+            }
           }
         },
         "string_decoder": {
@@ -106,6 +113,13 @@
           "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
           "requires": {
             "safe-buffer": "~5.1.0"
+          },
+          "dependencies": {
+            "safe-buffer": {
+              "version": "5.1.2",
+              "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+              "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
+            }
           }
         }
       }
@@ -176,14 +190,6 @@
         "center-align": "^0.1.1",
         "right-align": "^0.1.1",
         "wordwrap": "0.0.2"
-      },
-      "dependencies": {
-        "wordwrap": {
-          "version": "0.0.2",
-          "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.2.tgz",
-          "integrity": "sha1-t5Zpu0LstAn4PVg8rVLKF+qhZD8=",
-          "dev": true
-        }
       }
     },
     "cls": {
@@ -193,9 +199,9 @@
       "dev": true
     },
     "commander": {
-      "version": "2.19.0",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.19.0.tgz",
-      "integrity": "sha512-6tvAOO+D6OENvRAh524Dh9jcfKTYDQAqvqezbCW82xj5X0pSrcpxtvRKHLG0yBY6SD7PSDrJaj+0AiOcKVd1Xg=="
+      "version": "2.20.3",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
+      "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ=="
     },
     "commondir": {
       "version": "0.0.1",
@@ -233,9 +239,9 @@
           "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
         },
         "readable-stream": {
-          "version": "2.3.6",
-          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
-          "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
+          "version": "2.3.7",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.7.tgz",
+          "integrity": "sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==",
           "requires": {
             "core-util-is": "~1.0.0",
             "inherits": "~2.0.3",
@@ -246,6 +252,11 @@
             "util-deprecate": "~1.0.1"
           }
         },
+        "safe-buffer": {
+          "version": "5.1.2",
+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+          "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
+        },
         "string_decoder": {
           "version": "1.1.1",
           "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
@@ -366,9 +377,9 @@
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-      "version": "3.6.1",
-      "resolved": "https://registry.npmjs.org/duplexify/-/duplexify-3.6.1.tgz",
-      "integrity": "sha512-vM58DwdnKmty+FSPzT14K9JXb90H+j5emaR4KYbr2KTIz00WHGbWOe5ghQTx233ZCLZtrGDALzKwcjEtSt35mA==",
+      "version": "3.7.1",
+      "resolved": "https://registry.npmjs.org/duplexify/-/duplexify-3.7.1.tgz",
+      "integrity": "sha512-07z8uv2wMyS51kKhD1KsdXJg5WQ6t93RneqRxUHnskXVtlYYkLqM0gqStQZ3pj073g687jPCHrqNfCzawLYh5g==",
       "requires": {
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         "inherits": "^2.0.1",
@@ -382,9 +393,9 @@
           "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
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-          "version": "2.3.6",
-          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
-          "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
+          "version": "2.3.7",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.7.tgz",
+          "integrity": "sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==",
           "requires": {
             "core-util-is": "~1.0.0",
             "inherits": "~2.0.3",
@@ -395,6 +406,11 @@
             "util-deprecate": "~1.0.1"
           }
         },
+        "safe-buffer": {
+          "version": "5.1.2",
+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+          "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
+        },
         "string_decoder": {
           "version": "1.1.1",
           "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
@@ -421,19 +437,19 @@
       "dev": true
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-      "version": "1.4.1",
-      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.1.tgz",
-      "integrity": "sha512-1MkrZNvWTKCaigbn+W15elq2BB/L22nqrSY5DKlo3X6+vclJm8Bb5djXJBmEX6fS3+zCh/F4VBK5Z2KxJt4s2Q==",
+      "version": "1.4.4",
+      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.4.tgz",
+      "integrity": "sha512-+uw1inIHVPQoaVuHzRyXd21icM+cnt4CzD5rW+NC1wjOUSTOs+Te7FOv7AhN7vS9x/oIyhLP5PR1H+phQAHu5Q==",
       "requires": {
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       }
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     "escodegen": {
-      "version": "1.11.0",
-      "resolved": "https://registry.npmjs.org/escodegen/-/escodegen-1.11.0.tgz",
-      "integrity": "sha512-IeMV45ReixHS53K/OmfKAIztN/igDHzTJUhZM3k1jMhIZWjk45SMwAtBsEXiJp3vSPmTcu6CXn7mDvFHRN66fw==",
+      "version": "1.14.1",
+      "resolved": "https://registry.npmjs.org/escodegen/-/escodegen-1.14.1.tgz",
+      "integrity": "sha512-Bmt7NcRySdIfNPfU2ZoXDrrXsG9ZjvDxcAlMfDUgRBjLOWTuIACXPBFJH7Z+cLb40JeQco5toikyc9t9P8E9SQ==",
       "requires": {
-        "esprima": "^3.1.3",
+        "esprima": "^4.0.1",
         "estraverse": "^4.2.0",
         "esutils": "^2.0.2",
         "optionator": "^0.8.1",
@@ -441,19 +457,19 @@
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-      "version": "3.1.3",
-      "resolved": "https://registry.npmjs.org/esprima/-/esprima-3.1.3.tgz",
-      "integrity": "sha1-/cpRzuYTOJXjyI1TXOSdv/YqRjM="
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/esprima/-/esprima-4.0.1.tgz",
+      "integrity": "sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A=="
     },
     "estraverse": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/estraverse/-/estraverse-4.2.0.tgz",
-      "integrity": "sha1-De4/7TH81GlhjOc0IJn8GvoL2xM="
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/estraverse/-/estraverse-4.3.0.tgz",
+      "integrity": "sha512-39nnKffWz8xN1BU/2c79n9nB9HDzo0niYUqx6xyqUnyoAnQyyWpOTdZEeiCch8BBu515t4wp9ZmgVfVhn9EBpw=="
     },
     "esutils": {
-      "version": "2.0.2",
-      "resolved": "https://registry.npmjs.org/esutils/-/esutils-2.0.2.tgz",
-      "integrity": "sha1-Cr9PHKpbyx96nYrMbepPqqBLrJs="
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/esutils/-/esutils-2.0.3.tgz",
+      "integrity": "sha512-kVscqXk4OCp68SZ0dkgEKVi6/8ij300KBWTJq32P/dYeWTSwK41WyTxalN1eRmA5Z9UU/LX9D7FWSmV9SAYx6g=="
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     "events": {
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@@ -502,9 +518,9 @@
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-          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
-          "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
+          "version": "2.3.7",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.7.tgz",
+          "integrity": "sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==",
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             "inherits": "~2.0.3",
@@ -515,6 +531,11 @@
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+        "safe-buffer": {
+          "version": "5.1.2",
+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+          "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
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           "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
@@ -716,9 +737,9 @@
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-      "resolved": "https://registry.npmjs.org/gl-matrix/-/gl-matrix-3.0.0.tgz",
-      "integrity": "sha512-PD4mVH/C/Zs64kOozeFnKY8ybhgwxXXQYGWdB4h68krAHknWJgk9uKOn6z8YElh5//vs++90pb6csrTIDWnexA==",
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/gl-matrix/-/gl-matrix-3.2.1.tgz",
+      "integrity": "sha512-YYVO8jUSf6+SakL4AJmx9Jc7zAZhkJQ+WhdtX3VQe5PJdCOX6/ybY4x1vk+h94ePnjRn6uml68+QxTAJneUpvA==",
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@@ -998,11 +1019,6 @@
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-      "resolved": "https://registry.npmjs.org/glsl-read-float/-/glsl-read-float-1.1.0.tgz",
-      "integrity": "sha1-37CIsBYtz8xW/E7d0vhuGMrDLyY="
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@@ -1088,9 +1104,9 @@
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-      "resolved": "https://registry.npmjs.org/glsl-tokenizer/-/glsl-tokenizer-2.1.4.tgz",
-      "integrity": "sha512-AkZgCYSRJVeVcg/n/D7q3WWyyf0CR+BXPxdM+kzE0ov8lf8BL6jWhL2+ZrCV5J6yHKTJUyW+pW8yltzGFb5wKw==",
+      "version": "2.1.5",
+      "resolved": "https://registry.npmjs.org/glsl-tokenizer/-/glsl-tokenizer-2.1.5.tgz",
+      "integrity": "sha512-XSZEJ/i4dmz3Pmbnpsy3cKh7cotvFlBiZnDOwnj/05EwNp2XrhQ4XKJxT7/pDt4kp4YcpRSKz8eTV7S+mwV6MA==",
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@@ -1123,9 +1139,9 @@
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-          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
-          "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
+          "version": "2.3.7",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.7.tgz",
+          "integrity": "sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==",
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             "inherits": "~2.0.3",
@@ -1136,6 +1152,11 @@
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+        "safe-buffer": {
+          "version": "5.1.2",
+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+          "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
+        },
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           "version": "1.1.1",
           "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
@@ -1258,9 +1279,9 @@
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-      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.1.15.tgz",
-      "integrity": "sha512-6uHUhOPEBgQ24HM+r6b/QwWfZq+yiFcipKFrOFiBEnWdy5sdzYoi+pJeQaPI5qOLRFqWmAXUPQNsielzdLoecA=="
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.3.tgz",
+      "integrity": "sha512-a30VEBm4PEdx1dRB7MFK7BejejvCvBronbLjht+sHuGYj8PHs7M/5Z+rt5lw551vZ7yfTCj4Vuyy3mSJytDWRQ=="
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@@ -1272,9 +1293,9 @@
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-      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
-      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4="
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
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@@ -1385,9 +1406,9 @@
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@@ -1449,10 +1470,16 @@
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+    "object-inspect": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-0.4.0.tgz",
+      "integrity": "sha1-9RV8EWwUVbJDsG7pdwM5LFrYn+w=",
+      "dev": true
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-      "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.0.12.tgz",
-      "integrity": "sha512-FTMyFUm2wBcGHnH2eXmz7tC6IwlqQZ6mVZ+6dm6vZ4IQIHjs6FdNsQBuKGPuUUUY6NfJw2PshC08Tn6LzLDOag=="
+      "version": "1.1.1",
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@@ -1463,16 +1490,16 @@
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-      "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.8.2.tgz",
-      "integrity": "sha1-NkxeQJ0/TWMB1sC0wFu6UBgK62Q=",
+      "version": "0.8.3",
+      "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.8.3.tgz",
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-        "fast-levenshtein": "~2.0.4",
+        "fast-levenshtein": "~2.0.6",
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         "prelude-ls": "~1.1.2",
         "type-check": "~0.3.2",
-        "wordwrap": "~1.0.0"
+        "word-wrap": "~1.2.3"
       }
     },
     "orbit-camera": {
@@ -1581,9 +1608,9 @@
       "dev": true
     },
     "process-nextick-args": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.0.tgz",
-      "integrity": "sha512-MtEC1TqN0EU5nephaJ4rAtThHtC86dNN9qCuEhtshvpVBkAW5ZO7BASN9REnF9eoXGcRub+pFuKEpOHE+HbEMw=="
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
+      "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag=="
     },
     "quote-stream": {
       "version": "0.0.0",
@@ -1647,7 +1674,7 @@
       "requires": {
         "ast-types": "~0.3.35",
         "cls": "~0.1.3",
-        "esprima": "git+https://github.com/ariya/esprima.git#a65a3eb93b9a5dce9a1184ca2d1bd0b184c6b8fd",
+        "esprima": "git+https://github.com/ariya/esprima.git#harmony",
         "private": "~0.1.4",
         "source-map": "0.1.32"
       },
@@ -1683,9 +1710,9 @@
       }
     },
     "resolve": {
-      "version": "1.9.0",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.9.0.tgz",
-      "integrity": "sha512-TZNye00tI67lwYvzxCxHGjwTNlUV70io54/Ed4j6PscB8xVfuBJpRenI/o6dVk0cY0PYTY27AgCoGGxRnYuItQ==",
+      "version": "1.15.1",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.15.1.tgz",
+      "integrity": "sha512-84oo6ZTtoTUpjgNEr5SJyzQhzL72gaRodsSfyxC/AXRvwu0Yse9H8eF9IpGo7b8YetZhlI6v7ZQ6bKBFV/6S7w==",
       "requires": {
         "path-parse": "^1.0.6"
       }
@@ -1766,9 +1793,9 @@
       "dev": true
     },
     "safe-buffer": {
-      "version": "5.1.2",
-      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
-      "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.0.tgz",
+      "integrity": "sha512-fZEwUGbVl7kouZs1jCdMLdt95hdIv0ZeHg6L7qPeciMZhZ+/gdesW4wgTARkrFWEpspjEATAzUGPG8N2jJiwbg=="
     },
     "shallow-copy": {
       "version": "0.0.1",
@@ -1869,9 +1896,9 @@
       }
     },
     "sprintf-js": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.1.1.tgz",
-      "integrity": "sha1-Nr54Mgr+WAH2zqPueLblqrlA6gw="
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.1.2.tgz",
+      "integrity": "sha512-VE0SOVEHCk7Qc8ulkWw3ntAzXuqf7S2lvwQaDLRnUeIEaKNQJzV6BwmLKhOqT61aGhfUMrXeaBk+oDGCzvhcug=="
     },
     "stack-trace": {
       "version": "0.0.9",
@@ -1879,11 +1906,11 @@
       "integrity": "sha1-qPbq7KkGdMMz58Q5U/J1tFFRBpU="
     },
     "static-eval": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/static-eval/-/static-eval-2.0.0.tgz",
-      "integrity": "sha512-6flshd3F1Gwm+Ksxq463LtFd1liC77N/PX1FVVc3OzL3hAmo2fwHFbuArkcfi7s9rTNsLEhcRmXGFZhlgy40uw==",
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/static-eval/-/static-eval-2.0.3.tgz",
+      "integrity": "sha512-zsxDGucfAh8T339sSKgpFbvg15Fms2IVaJGC+jqp0bVsxhcpM+iMeAI8weNo8dmf4OblgifTBUoyk1vGVtYw2w==",
       "requires": {
-        "escodegen": "^1.8.1"
+        "escodegen": "^1.11.1"
       }
     },
     "static-module": {
@@ -1935,12 +1962,6 @@
           "integrity": "sha1-gVHTWOIMisx/t0XnRywAJf5JZXA=",
           "dev": true
         },
-        "object-inspect": {
-          "version": "0.4.0",
-          "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-0.4.0.tgz",
-          "integrity": "sha1-9RV8EWwUVbJDsG7pdwM5LFrYn+w=",
-          "dev": true
-        },
         "object-keys": {
           "version": "0.4.0",
           "resolved": "https://registry.npmjs.org/object-keys/-/object-keys-0.4.0.tgz",
@@ -2022,9 +2043,9 @@
       }
     },
     "stream-shift": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/stream-shift/-/stream-shift-1.0.0.tgz",
-      "integrity": "sha1-1cdSgl5TZ+eG944Y5EXqIjoVWVI="
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/stream-shift/-/stream-shift-1.0.1.tgz",
+      "integrity": "sha512-AiisoFqQ0vbGcZgQPY1cdP2I76glaVA/RauYR4G4thNFgkTqr90yXTo4LYX60Jl+sIlPNHHdGSwo01AvbKUSVQ=="
     },
     "string_decoder": {
       "version": "0.10.31",
@@ -2103,9 +2124,9 @@
       "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c="
     },
     "typedarray-pool": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/typedarray-pool/-/typedarray-pool-1.1.0.tgz",
-      "integrity": "sha1-0RT0hIAUifU+yrXoCIqiMET0mNk=",
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/typedarray-pool/-/typedarray-pool-1.2.0.tgz",
+      "integrity": "sha512-YTSQbzX43yvtpfRtIDAYygoYtgT+Rpjuxy9iOpczrjpXLgGoyG7aS5USJXV2d3nn8uHTeb9rXDvzS27zUg5KYQ==",
       "requires": {
         "bit-twiddle": "^1.0.0",
         "dup": "^1.0.0"
@@ -2208,10 +2229,16 @@
       "integrity": "sha1-VDjNLqk7IC76Ohn+iIeu58lPnJ0=",
       "dev": true
     },
+    "word-wrap": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.3.tgz",
+      "integrity": "sha512-Hz/mrNwitNRh/HUAtM/VT/5VH+ygD6DV7mYKZAtHOrbs8U7lvPS6xf7EJKMF0uW1KJCl0H701g3ZGus+muE5vQ=="
+    },
     "wordwrap": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
-      "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus="
+      "version": "0.0.2",
+      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.2.tgz",
+      "integrity": "sha1-t5Zpu0LstAn4PVg8rVLKF+qhZD8=",
+      "dev": true
     },
     "wrap-stream": {
       "version": "0.0.0",
@@ -2228,9 +2255,9 @@
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
     "xtend": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
-      "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68="
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
+      "integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ=="
     },
     "yargs": {
       "version": "3.10.0",
diff --git a/package.json b/package.json
index 213eb22..7ba5f69 100644
--- a/package.json
+++ b/package.json
@@ -8,21 +8,20 @@
   },
   "dependencies": {
     "binary-search-bounds": "^2.0.4",
-    "gl-buffer": "^2.0.8",
+    "gl-buffer": "^2.1.2",
     "gl-shader": "^4.2.1",
-    "gl-texture2d": "^2.0.2",
-    "gl-vao": "^1.1.3",
+    "gl-texture2d": "^2.1.0",
+    "gl-vao": "^1.3.0",
     "glsl-out-of-range": "^1.0.4",
-    "glsl-read-float": "^1.0.0",
     "glslify": "^7.0.0",
-    "ndarray": "^1.0.16"
+    "ndarray": "^1.0.18"
   },
   "devDependencies": {
     "chttps": "^1.0.6",
     "game-shell-orbit-camera": "^1.0.0",
     "gl-axes": "^6.0.2",
-    "gl-matrix": "^3.0.0",
-    "gl-now": "^1.3.1",
+    "gl-matrix": "^3.2.1",
+    "gl-now": "^1.4.0",
     "gl-select": "^3.0.0",
     "gl-spikes": "^2.0.1"
   },
diff --git a/shaders/pick.glsl b/shaders/pick.glsl
index b0f227c..9d61670 100644
--- a/shaders/pick.glsl
+++ b/shaders/pick.glsl
@@ -1,6 +1,47 @@
 precision highp float;
 
-#pragma glslify: packFloat = require(glsl-read-float)
+#define FLOAT_MAX  1.70141184e38
+#define FLOAT_MIN  1.17549435e-38
+
+// https://github.com/mikolalysenko/glsl-read-float/blob/master/index.glsl
+vec4 packFloat(float v) {
+  float av = abs(v);
+
+  //Handle special cases
+  if(av < FLOAT_MIN) {
+    return vec4(0.0, 0.0, 0.0, 0.0);
+  } else if(v > FLOAT_MAX) {
+    return vec4(127.0, 128.0, 0.0, 0.0) / 255.0;
+  } else if(v < -FLOAT_MAX) {
+    return vec4(255.0, 128.0, 0.0, 0.0) / 255.0;
+  }
+
+  vec4 c = vec4(0,0,0,0);
+
+  //Compute exponent and mantissa
+  float e = floor(log2(av));
+  float m = av * pow(2.0, -e) - 1.0;
+
+  //Unpack mantissa
+  c[1] = floor(128.0 * m);
+  m -= c[1] / 128.0;
+  c[2] = floor(32768.0 * m);
+  m -= c[2] / 32768.0;
+  c[3] = floor(8388608.0 * m);
+
+  //Unpack exponent
+  float ebias = e + 127.0;
+  c[0] = floor(ebias / 2.0);
+  ebias -= c[0] * 2.0;
+  c[1] += floor(ebias) * 128.0;
+
+  //Unpack sign bit
+  c[0] += 128.0 * step(0.0, -v);
+
+  //Scale back to range
+  return c / 255.0;
+}
+
 #pragma glslify: outOfRange = require(glsl-out-of-range)
 
 uniform float pickId;