diff --git a/src/core/pattern.js b/src/core/pattern.js
index 6296f2cfe..0321e1b4b 100644
--- a/src/core/pattern.js
+++ b/src/core/pattern.js
@@ -225,7 +225,7 @@ Shadings.Mesh = (function MeshClosure() {
 
     var numComps = context.numComps;
     this.tmpCompsBuf = new Float32Array(numComps);
-    var csNumComps = context.colorSpace;
+    var csNumComps = context.colorSpace.numComps;
     this.tmpCsCompsBuf = context.colorFn ? new Float32Array(csNumComps) :
                                            this.tmpCompsBuf;
   }
@@ -345,13 +345,10 @@ Shadings.Mesh = (function MeshClosure() {
 
       reader.align();
     }
-
-    var psPacked = new Int32Array(ps);
-
     mesh.figures.push({
       type: 'triangles',
-      coords: psPacked,
-      colors: psPacked
+      coords: new Int32Array(ps),
+      colors: new Int32Array(ps),
     });
   }
 
@@ -366,13 +363,10 @@ Shadings.Mesh = (function MeshClosure() {
       coords.push(coord);
       colors.push(color);
     }
-
-    var psPacked = new Int32Array(ps);
-
     mesh.figures.push({
       type: 'lattice',
-      coords: psPacked,
-      colors: psPacked,
+      coords: new Int32Array(ps),
+      colors: new Int32Array(ps),
       verticesPerRow: verticesPerRow
     });
   }
diff --git a/test/pdfs/.gitignore b/test/pdfs/.gitignore
index a186388cc..ba8c87bf3 100644
--- a/test/pdfs/.gitignore
+++ b/test/pdfs/.gitignore
@@ -22,6 +22,8 @@
 !simpletype3font.pdf
 !sizes.pdf
 !close-path-bug.pdf
+!issue2948.pdf
+!issue6231_1.pdf
 !issue4630.pdf
 !issue4909.pdf
 !issue5202.pdf
diff --git a/test/pdfs/issue2948.pdf b/test/pdfs/issue2948.pdf
new file mode 100644
index 000000000..5eef6c609
Binary files /dev/null and b/test/pdfs/issue2948.pdf differ
diff --git a/test/pdfs/issue6231_1.pdf b/test/pdfs/issue6231_1.pdf
new file mode 100644
index 000000000..59e9123a8
Binary files /dev/null and b/test/pdfs/issue6231_1.pdf differ
diff --git a/test/test_manifest.json b/test/test_manifest.json
index 5ecd5b7b2..ddda2d452 100644
--- a/test/test_manifest.json
+++ b/test/test_manifest.json
@@ -634,6 +634,20 @@
        "rounds": 1,
        "type": "eq"
     },
+    {  "id": "issue2948",
+       "file": "pdfs/issue2948.pdf",
+       "md5": "26210bed6a57d5466042aff22f0249f0",
+       "link": false,
+       "rounds": 1,
+       "type": "eq"
+    },
+    {  "id": "issue6231_1",
+       "file": "pdfs/issue6231_1.pdf",
+       "md5": "eb13a9366a5142833a858472c68b4749",
+       "link": false,
+       "rounds": 1,
+       "type": "eq"
+    },
     {  "id": "usmanm-bad-auto-fetch",
        "file": "pdfs/usmanm-bad.pdf",
        "md5": "38afb822433aaf07fc8f54807cd4f61a",