Dirty layers in the area covered by a drawBitmapMesh() call

Bug #3410827

Change-Id: Ic8b4f6201af94497bba86c75819588c78debddc2

libs/hwui/OpenGLRenderer.cpp

@@ -1110,6 +1110,17 @@ void OpenGLRenderer::drawBitmapMesh(SkBitmap* bitmap, int meshWidth, int meshHei
 
     const uint32_t count = meshWidth * meshHeight * 6;
 
+    float left = FLT_MAX;
+    float top = FLT_MAX;
+    float right = FLT_MIN;
+    float bottom = FLT_MIN;
+
+#if RENDER_LAYERS_AS_REGIONS
+    bool hasActiveLayer = hasLayer();
+#else
+    bool hasActiveLayer = false;
+#endif
+
     // TODO: Support the colors array
     TextureVertex mesh[count];
     TextureVertex* vertex = mesh;
@@ -1138,12 +1149,28 @@ void OpenGLRenderer::drawBitmapMesh(SkBitmap* bitmap, int meshWidth, int meshHei
             TextureVertex::set(vertex++, vertices[ax], vertices[ay], u1, v2);
             TextureVertex::set(vertex++, vertices[cx], vertices[cy], u2, v1);
             TextureVertex::set(vertex++, vertices[dx], vertices[dy], u2, v2);
+
+#if RENDER_LAYERS_AS_REGIONS
+            if (hasActiveLayer) {
+                // TODO: This could be optimized to avoid unnecessary ops
+                left = fminf(left, fminf(vertices[ax], fminf(vertices[bx], vertices[cx])));
+                top = fminf(top, fminf(vertices[ay], fminf(vertices[by], vertices[cy])));
+                right = fmaxf(right, fmaxf(vertices[ax], fmaxf(vertices[bx], vertices[cx])));
+                bottom = fmaxf(bottom, fmaxf(vertices[ay], fmaxf(vertices[by], vertices[cy])));
+            }
+#endif
         }
     }
 
+#if RENDER_LAYERS_AS_REGIONS
+    if (hasActiveLayer) {
+        dirtyLayer(left, top, right, bottom, *mSnapshot->transform);
+    }
+#endif
+
     drawTextureMesh(0.0f, 0.0f, 1.0f, 1.0f, texture->id, alpha / 255.0f,
             mode, texture->blend, &mesh[0].position[0], &mesh[0].texture[0],
-            GL_TRIANGLES, count);
+            GL_TRIANGLES, count, false, false, 0, false, false);
 }
 
 void OpenGLRenderer::drawBitmap(SkBitmap* bitmap,

tests/HwAccelerationTest/AndroidManifest.xml

@@ -32,7 +32,16 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
-        
+
+        <activity
+                android:name="BitmapMeshLayerActivity"
+                android:label="_BitmapMeshLayer">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+                
         <activity
                 android:name="MarqueeActivity"
                 android:label="_Marquee">

tests/HwAccelerationTest/src/com/android/test/hwui/BitmapMeshActivity.java

@@ -31,7 +31,6 @@ public class BitmapMeshActivity extends Activity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         final BitmapMeshView view = new BitmapMeshView(this);
-        view.setDrawingCacheEnabled(true);
         setContentView(view);
     }
 

tests/HwAccelerationTest/src/com/android/test/hwui/BitmapMeshLayerActivity.java

@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2011 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.Canvas;
+import android.graphics.Paint;
+import android.os.Bundle;
+import android.view.View;
+
+@SuppressWarnings({"UnusedDeclaration"})
+public class BitmapMeshLayerActivity extends Activity {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        final BitmapMeshView view = new BitmapMeshView(this);
+        view.setLayerType(View.LAYER_TYPE_HARDWARE, null);
+        setContentView(view);
+    }
+
+    static class BitmapMeshView extends View {
+        private Paint mBitmapPaint;
+        private final Bitmap mBitmap1;
+        private float[] mVertices;
+        private int[] mColors;
+
+        BitmapMeshView(Context c) {
+            super(c);
+
+            mBitmap1 = BitmapFactory.decodeResource(c.getResources(), R.drawable.sunset1);
+
+            final float width = mBitmap1.getWidth() / 3.0f;
+            final float height = mBitmap1.getHeight() / 3.0f;
+
+            mVertices = new float[] {
+                0.0f, 0.0f, width, 0.0f, width * 2, 0.0f, width * 3, 0.0f,
+                0.0f, height, width, height, width * 2, height, width * 4, height,
+                0.0f, height * 2, width, height * 2, width * 2, height * 2, width * 3, height * 2,
+                0.0f, height * 4, width, height * 4, width * 2, height * 4, width * 4, height * 4,
+            };
+            
+            mColors = new int[] {
+                0xffff0000, 0xff00ff00, 0xff0000ff, 0xffff0000,
+                0xff0000ff, 0xffff0000, 0xff00ff00, 0xff00ff00,
+                0xff00ff00, 0xff0000ff, 0xffff0000, 0xff00ff00,
+                0x00ff0000, 0x0000ff00, 0x000000ff, 0x00ff0000,
+            };
+        }
+
+        @Override
+        protected void onDraw(Canvas canvas) {
+            super.onDraw(canvas);
+
+            canvas.translate(100, 100);
+            canvas.drawBitmapMesh(mBitmap1, 3, 3, mVertices, 0, null, 0, null);
+
+            canvas.translate(400, 0);
+            canvas.drawBitmapMesh(mBitmap1, 3, 3, mVertices, 0, mColors, 0, null);
+        }
+    }
+}