(Small) 9patch drawing improvements

Save a bit of memory in meshs generated from native code
Avoid an extra if/else when drawing with hardware accelration on

Change-Id: I31a4550bde4d2c27961710ebcc92b66cd71153cc

1 files changed, 10 insertions, 2 deletions

diff --git a/libs/hwui/Patch.cpp b/libs/hwui/Patch.cpp
index 9e3e7013e7a2..7656f85e62a7 100644
--- a/libs/hwui/Patch.cpp
+++ b/libs/hwui/Patch.cpp
@@ -79,8 +79,8 @@ TextureVertex* Patch::createMesh(const float bitmapWidth, const float bitmapHeig
     uint32_t maxVertices = ((xCount + 1) * (yCount + 1) - emptyQuads) * 4;
     if (maxVertices == 0) return NULL;
 
-    vertices = new TextureVertex[maxVertices];
-    TextureVertex* vertex = vertices;
+    TextureVertex* tempVertices = new TextureVertex[maxVertices];
+    TextureVertex* vertex = tempVertices;
 
     const int32_t* xDivs = patch->xDivs;
     const int32_t* yDivs = patch->yDivs;
@@ -159,6 +159,14 @@ TextureVertex* Patch::createMesh(const float bitmapWidth, const float bitmapHeig
                 width, bitmapWidth, quadCount);
     }
 
+    if (verticesCount == maxVertices) {
+        vertices = tempVertices;
+    } else {
+        vertices = new TextureVertex[verticesCount];
+        memcpy(vertices, tempVertices, verticesCount * sizeof(TextureVertex));
+        delete[] tempVertices;
+    }
+
     return vertices;
 }