Correctly implement the CLEAR xfermode.
The previous implementation was using glBlendFunc with the parameters
GL_ZERO/GL_ZERO which doesn't work for text, paths and other alpha
sources (anti-aliasing.) The correct implementation is GL_ZERO/
GL_ONE_MINUS_SRC_ALPHA.
Change-Id: I4cca65e57b6a37bbf5a41d382cb0648ee8e11e79
diff --git a/tests/HwAccelerationTest/AndroidManifest.xml b/tests/HwAccelerationTest/AndroidManifest.xml
index 35f2b9b..01d30eb 100644
--- a/tests/HwAccelerationTest/AndroidManifest.xml
+++ b/tests/HwAccelerationTest/AndroidManifest.xml
@@ -30,6 +30,15 @@
android:hardwareAccelerated="true">
<activity
+ android:name="ClearActivity"
+ android:label="_Clear">
+ <intent-filter>
+ <action android:name="android.intent.action.MAIN" />
+ <category android:name="android.intent.category.LAUNCHER" />
+ </intent-filter>
+ </activity>
+
+ <activity
android:name="TextureViewActivity"
android:label="_TextureView">
<intent-filter>
diff --git a/tests/HwAccelerationTest/src/com/android/test/hwui/ClearActivity.java b/tests/HwAccelerationTest/src/com/android/test/hwui/ClearActivity.java
new file mode 100644
index 0000000..1d7ff0f
--- /dev/null
+++ b/tests/HwAccelerationTest/src/com/android/test/hwui/ClearActivity.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2010 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.test.hwui;
+
+import android.app.Activity;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.BitmapShader;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.Path;
+import android.graphics.PorterDuff;
+import android.graphics.PorterDuffXfermode;
+import android.os.Bundle;
+import android.view.View;
+
+@SuppressWarnings({"UnusedDeclaration"})
+public class ClearActivity extends Activity {
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ final PathsView view = new PathsView(this);
+ setContentView(view);
+ }
+
+ public static class PathsView extends View {
+ private final Bitmap mBitmap1;
+ private final Paint mClearPaint;
+ private final Path mPath;
+
+ public PathsView(Context c) {
+ super(c);
+
+ mBitmap1 = BitmapFactory.decodeResource(c.getResources(), R.drawable.sunset2);
+
+ mClearPaint = new Paint();
+ mClearPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
+ mClearPaint.setAntiAlias(true);
+ mClearPaint.setColor(0xff00ff00);
+ mClearPaint.setStrokeWidth(15.0f);
+ mClearPaint.setStyle(Paint.Style.FILL);
+ mClearPaint.setTextSize(32.0f);
+
+ mPath = new Path();
+ mPath.moveTo(0.0f, 0.0f);
+ mPath.cubicTo(0.0f, 0.0f, 100.0f, 150.0f, 100.0f, 200.0f);
+ mPath.cubicTo(100.0f, 200.0f, 50.0f, 300.0f, -80.0f, 200.0f);
+ mPath.cubicTo(-80.0f, 200.0f, 100.0f, 200.0f, 200.0f, 0.0f);
+
+ }
+
+ @Override
+ protected void onDraw(Canvas canvas) {
+ super.onDraw(canvas);
+
+ canvas.save(); {
+ canvas.drawARGB(255, 255, 255, 255);
+ canvas.drawRect(100.0f, 100.0f, 200.0f, 200.0f, mClearPaint);
+ canvas.drawCircle(150.0f, 400.0f, 100.0f, mClearPaint);
+ canvas.drawBitmap(mBitmap1, 400.0f, 100.0f, mClearPaint);
+ canvas.save(); {
+ canvas.translate(400.0f, 400.0f);
+ canvas.drawPath(mPath, mClearPaint);
+ }
+ canvas.restore();
+ canvas.drawText("OpenGLRenderer", 50.0f, 50.0f, mClearPaint);
+ }
+ canvas.restore();
+ }
+ }
+}