Stabilize perf data.

Change-Id: I75fb31b1bb6e6a7a5a82b86fd4a6639dd328ceaa

Author: Jason Sams

tests/RenderScriptTests/ImageProcessing/src/com/android/rs/image/ImageProcessingActivity.java

@@ -280,14 +280,14 @@ private static Bitmap copyBitmap(Bitmap source) {
 
     // button hook
     public void benchmark(View v) {
-        long t = getBenchmark();
+        float t = getBenchmark();
         //long javaTime = javaFilter();
         //mBenchmarkResult.setText("RS: " + t + " ms  Java: " + javaTime + " ms");
         mBenchmarkResult.setText("Result: " + t + " ms");
     }
 
     // For benchmark test
-    public long getBenchmark() {
+    public float getBenchmark() {
         mDoingBenchmark = true;
 
         mTest.setupBenchmark();
@@ -303,14 +303,18 @@ public long getBenchmark() {
 
         Log.v(TAG, "Benchmarking");
         t = java.lang.System.currentTimeMillis();
-        mTest.runTest();
+        for (int i=0; i<10; i++) {
+            mTest.runTest();
+        }
         mTest.finish();
         t = java.lang.System.currentTimeMillis() - t;
+        float ft = (float)t;
+        ft /= 10;
 
-        Log.v(TAG, "getBenchmark: Renderscript frame time core ms " + t);
+        Log.v(TAG, "getBenchmark: Renderscript frame time core ms " + ft);
         mTest.exitBenchmark();
         mDoingBenchmark = false;
 
-        return t;
+        return ft;
     }
 }

tests/RenderScriptTests/ImageProcessing/src/com/android/rs/image/ImageProcessingTest.java

@@ -78,7 +78,7 @@ public void testImageProcessingBench() {
             BufferedWriter rsWriter = new BufferedWriter(new FileWriter(resultFile));
             Log.v(TAG, "Saved results in: " + resultFile.getAbsolutePath());
             for (int i = 0; i < ITERATION; i++ ) {
-                t = mAct.getBenchmark();
+                t = (long)mAct.getBenchmark();
                 sum += t;
                 rsWriter.write("Renderscript frame time core: " + t + " ms\n");
                 Log.v(TAG, "RenderScript framew time core: " + t + " ms");

tests/RenderScriptTests/ImageProcessing/src/com/android/rs/image/convolve3x3.rs

@@ -25,9 +25,9 @@ rs_allocation gIn;
 float gCoeffs[9];
 
 void root(uchar4 *out, uint32_t x, uint32_t y) {
-    uint32_t x1 = min((int32_t)x+1, gWidth);
+    uint32_t x1 = min((int32_t)x+1, gWidth-1);
     uint32_t x2 = max((int32_t)x-1, 0);
-    uint32_t y1 = min((int32_t)y+1, gHeight);
+    uint32_t y1 = min((int32_t)y+1, gHeight-1);
     uint32_t y2 = max((int32_t)y-1, 0);
 
     float4 p00 = convert_float4(((uchar4 *)rsGetElementAt(gIn, x1, y1))[0]);