1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.testapp;
18
19import java.util.ArrayList;
20import java.util.HashMap;
21import java.util.Map;
22import java.util.Vector;
23
24import com.android.scenegraph.SceneManager;
25
26import android.content.res.Resources;
27import android.graphics.Bitmap;
28import android.graphics.BitmapFactory;
29import android.os.AsyncTask;
30import android.renderscript.*;
31import android.renderscript.Allocation.MipmapControl;
32import android.renderscript.Element.Builder;
33import android.renderscript.Font.Style;
34import android.renderscript.Program.TextureType;
35import android.renderscript.ProgramStore.DepthFunc;
36import android.util.Log;
37
38// This is where the scenegraph and the rendered objects are initialized and used
39public class TestAppLoadingScreen {
40
41    private static String TAG = "TestAppLoadingScreen";
42
43    private Resources mRes;
44    private RenderScriptGL mRS;
45    private ScriptC_test_app mScript;
46
47    public TestAppLoadingScreen(RenderScriptGL rs, Resources res) {
48        mRS = rs;
49        mRes = res;
50        // Shows the loading screen with some text
51        renderLoading();
52        // Adds a little 3D bugdroid model to the laoding screen asynchronously.
53        new LoadingScreenLoaderTask().execute();
54    }
55
56    public void showLoadingScreen(boolean show) {
57        if (show) {
58            mRS.bindRootScript(mScript);
59        } else {
60            mRS.bindRootScript(SceneManager.getInstance().getRenderLoop());
61        }
62    }
63
64    // The loading screen has some elements that shouldn't be loaded on the UI thread
65    private class LoadingScreenLoaderTask extends AsyncTask<String, Void, Boolean> {
66        Allocation robotTex;
67        Mesh robotMesh;
68        protected Boolean doInBackground(String... names) {
69            long start = System.currentTimeMillis();
70            robotTex = Allocation.createFromBitmapResource(mRS, mRes, R.drawable.robot,
71                                                           MipmapControl.MIPMAP_ON_SYNC_TO_TEXTURE,
72                                                           Allocation.USAGE_GRAPHICS_TEXTURE);
73
74            FileA3D model = FileA3D.createFromResource(mRS, mRes, R.raw.robot);
75            FileA3D.IndexEntry entry = model.getIndexEntry(0);
76            if (entry != null && entry.getEntryType() == FileA3D.EntryType.MESH) {
77                robotMesh = entry.getMesh();
78            }
79
80            mScript.set_gPFSBackground(ProgramStore.BLEND_NONE_DEPTH_TEST(mRS));
81
82            ProgramFragmentFixedFunction.Builder b = new ProgramFragmentFixedFunction.Builder(mRS);
83            b.setTexture(ProgramFragmentFixedFunction.Builder.EnvMode.REPLACE,
84                         ProgramFragmentFixedFunction.Builder.Format.RGBA, 0);
85            ProgramFragment pfDefault = b.create();
86            pfDefault.bindSampler(Sampler.CLAMP_LINEAR(mRS), 0);
87            mScript.set_gPFBackground(pfDefault);
88
89            ProgramVertexFixedFunction.Builder pvb = new ProgramVertexFixedFunction.Builder(mRS);
90            ProgramVertexFixedFunction pvDefault = pvb.create();
91            ProgramVertexFixedFunction.Constants va = new ProgramVertexFixedFunction.Constants(mRS);
92            ((ProgramVertexFixedFunction)pvDefault).bindConstants(va);
93            mScript.set_gPVBackground(pvDefault);
94
95            long end = System.currentTimeMillis();
96            Log.v("TIMER", "Loading load time: " + (end - start));
97            return new Boolean(true);
98        }
99
100        protected void onPostExecute(Boolean result) {
101            mScript.set_gRobotTex(robotTex);
102            mScript.set_gRobotMesh(robotMesh);
103        }
104    }
105
106    // Creates a simple script to show a loding screen until everything is initialized
107    // Could also be used to do some custom renderscript work before handing things over
108    // to the scenegraph
109    void renderLoading() {
110        mScript = new ScriptC_test_app(mRS, mRes, R.raw.test_app);
111        mRS.bindRootScript(mScript);
112    }
113}
114