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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package com.android.rs.test;
import android.content.Context;
import android.content.res.Resources;
import android.renderscript.*;
import android.util.Log;
import java.lang.Thread;
import java.util.HashMap;
public class UT_script_group2_gatherscatter extends UnitTest {
private Resources mRes;
private static final int ARRAY_SIZE = 256;
private static final String TAG = "ScriptGroup2 (GatherScatter)";
int[] mArray;
protected UT_script_group2_gatherscatter(RSTestCore rstc, Resources res, Context ctx) {
super(rstc, TAG, ctx);
mRes = res;
}
public void initializeGlobals(RenderScript RS, ScriptC_addup s) {
mArray = new int[ARRAY_SIZE * 4];
for (int i = 0; i < ARRAY_SIZE; i++) {
mArray[i*4] = i * 7;
mArray[i*4 + 1] = i * 7 + 1;
mArray[i*4 + 2] = i * 7 + 2;
mArray[i*4 + 3] = i * 7 + 3;
}
}
// This test tests ScriptGroup2 API for handling gather scatter operations
// on global allocations that are passed across kernels in a script group.
// The test sums up all elements in the input int4 array of size ARRAY_SIZE.
// To do so, it adds up the second half of the array to its first half using
// kernel function add() in addsup.rs, and then repeatedly applies the same
// kernel function to the shrinking result arrays until the result is a
// single int4 value.
// These steps are created as a script group by repeatedly adding the
// same kernel function, with the input of one kernel being the output of
// the previous added kernel function.
// Since the kernel function relies on rsGetElementAt to access the counterpart
// of the current element in the second half of the array, the compiler cannot
// fuse it with the other kernel that it dependes on.
// This test verifies an ScriptGroup2 implementation correctly handles such
// a case.
public void run() {
RenderScript pRS = RenderScript.create(mCtx);
ScriptC_addup s = new ScriptC_addup(pRS);
pRS.setMessageHandler(mRsMessage);
initializeGlobals(pRS, s);
Allocation input = Allocation.createSized(pRS, Element.I32_4(pRS), ARRAY_SIZE);
input.copyFrom(mArray);
ScriptGroup2.Builder builder = new ScriptGroup2.Builder(pRS);
HashMap<Script.FieldID, Object> map = new HashMap<Script.FieldID, Object>();
ScriptGroup2.UnboundValue unbound = builder.addInput();
ScriptGroup2.Closure c = null;
ScriptGroup2.Future f = null;
int stride;
for (stride = ARRAY_SIZE / 2; stride >= 1; stride >>= 1) {
map.put(s.getFieldID_reduction_stride(), new Integer(stride));
if (f == null) {
map.put(s.getFieldID_a_in(), unbound);
} else {
map.put(s.getFieldID_a_in(), f);
}
c = builder.addKernel(s.getKernelID_add(),
Type.createX(pRS, Element.I32_4(pRS), stride),
new Object[0],
map);
f = c.getReturn();
}
ScriptGroup2 group = builder.create("Summation", c.getReturn());
if (c == null) {
return;
}
int[] a = new int[4];
((Allocation)group.execute(input)[0]).copyTo(a);
pRS.finish();
pRS.destroy();
boolean failed = false;
for (int i = 0; i < 4; i++) {
if (failed == false &&
a[i] != ARRAY_SIZE * (ARRAY_SIZE - 1) * 7 / 2 + i * ARRAY_SIZE) {
Log.e(TAG, "a["+i+"]="+a[i]+", should be "+
(ARRAY_SIZE * (ARRAY_SIZE - 1) * 7 / 2 + i * ARRAY_SIZE));
failed = true;
}
}
if (failed) {
failTest();
return;
}
passTest();
}
}
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