GLTextureViewActivity.java revision 402f05530352f34d5320c2d23be43c274d97c4e2 
1/*
2 * Copyright (C) 2011 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.test.hwui;
18
19import android.animation.ObjectAnimator;
20import android.animation.ValueAnimator;
21import android.app.Activity;
22import android.content.res.Resources;
23import android.graphics.Bitmap;
24import android.graphics.BitmapFactory;
25import android.graphics.SurfaceTexture;
26import android.opengl.GLUtils;
27import android.os.Bundle;
28import android.util.Log;
29import android.view.Gravity;
30import android.view.TextureView;
31import android.view.View;
32import android.view.ViewGroup;
33import android.widget.FrameLayout;
34
35import javax.microedition.khronos.egl.EGL10;
36import javax.microedition.khronos.egl.EGL11;
37import javax.microedition.khronos.egl.EGLConfig;
38import javax.microedition.khronos.egl.EGLContext;
39import javax.microedition.khronos.egl.EGLDisplay;
40import javax.microedition.khronos.egl.EGLSurface;
41import javax.microedition.khronos.opengles.GL;
42import java.io.BufferedOutputStream;
43import java.io.FileNotFoundException;
44import java.io.FileOutputStream;
45import java.io.IOException;
46import java.nio.ByteBuffer;
47import java.nio.ByteOrder;
48import java.nio.FloatBuffer;
49
50import static android.opengl.GLES20.*;
51
52@SuppressWarnings({"UnusedDeclaration"})
53public class GLTextureViewActivity extends Activity implements TextureView.SurfaceTextureListener {
54    private RenderThread mRenderThread;
55    private TextureView mTextureView;
56
57    @Override
58    protected void onCreate(Bundle savedInstanceState) {
59        super.onCreate(savedInstanceState);
60
61        mTextureView = new TextureView(this);
62        mTextureView.setSurfaceTextureListener(this);
63        mTextureView.setOnClickListener(new View.OnClickListener() {
64            @Override
65            public void onClick(View v) {
66                Bitmap b = mTextureView.getBitmap(800, 800);
67                BufferedOutputStream out = null;
68                try {
69                    out = new BufferedOutputStream(new FileOutputStream("/sdcard/out.png"));
70                    b.compress(Bitmap.CompressFormat.PNG, 100, out);
71                } catch (FileNotFoundException e) {
72                    e.printStackTrace();
73                } finally {
74                    if (out != null) try {
75                        out.close();
76                    } catch (IOException e) {
77                        e.printStackTrace();
78                    }
79                }
80            }
81        });
82
83        setContentView(mTextureView, new FrameLayout.LayoutParams(
84                ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT,
85                Gravity.CENTER));
86    }
87
88    @Override
89    public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
90        mRenderThread = new RenderThread(getResources(), surface);
91        mRenderThread.start();
92
93        mTextureView.setCameraDistance(5000);
94
95        ObjectAnimator animator = ObjectAnimator.ofFloat(mTextureView, "rotationY", 0.0f, 360.0f);
96        animator.setRepeatMode(ObjectAnimator.REVERSE);
97        animator.setRepeatCount(ObjectAnimator.INFINITE);
98        animator.setDuration(4000);
99        animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
100            @Override
101            public void onAnimationUpdate(ValueAnimator animation) {
102                mTextureView.invalidate();
103            }
104        });
105        animator.start();
106    }
107
108    @Override
109    public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
110    }
111
112    @Override
113    public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
114        mRenderThread.finish();
115        try {
116            mRenderThread.join();
117        } catch (InterruptedException e) {
118            Log.e(RenderThread.LOG_TAG, "Could not wait for render thread");
119        }
120        return true;
121    }
122
123    @Override
124    public void onSurfaceTextureUpdated(SurfaceTexture surface) {
125    }
126
127    private static class RenderThread extends Thread {
128        private static final String LOG_TAG = "GLTextureView";
129
130        static final int EGL_CONTEXT_CLIENT_VERSION = 0x3098;
131        static final int EGL_OPENGL_ES2_BIT = 4;
132
133        private volatile boolean mFinished;
134
135        private final Resources mResources;
136        private final SurfaceTexture mSurface;
137
138        private EGL10 mEgl;
139        private EGLDisplay mEglDisplay;
140        private EGLConfig mEglConfig;
141        private EGLContext mEglContext;
142        private EGLSurface mEglSurface;
143        private GL mGL;
144
145        RenderThread(Resources resources, SurfaceTexture surface) {
146            mResources = resources;
147            mSurface = surface;
148        }
149
150        private static final String sSimpleVS =
151                "attribute vec4 position;\n" +
152                "attribute vec2 texCoords;\n" +
153                "varying vec2 outTexCoords;\n" +
154                "\nvoid main(void) {\n" +
155                "    outTexCoords = texCoords;\n" +
156                "    gl_Position = position;\n" +
157                "}\n\n";
158        private static final String sSimpleFS =
159                "precision mediump float;\n\n" +
160                "varying vec2 outTexCoords;\n" +
161                "uniform sampler2D texture;\n" +
162                "\nvoid main(void) {\n" +
163                "    gl_FragColor = texture2D(texture, outTexCoords);\n" +
164                "}\n\n";
165
166        private static final int FLOAT_SIZE_BYTES = 4;
167        private static final int TRIANGLE_VERTICES_DATA_STRIDE_BYTES = 5 * FLOAT_SIZE_BYTES;
168        private static final int TRIANGLE_VERTICES_DATA_POS_OFFSET = 0;
169        private static final int TRIANGLE_VERTICES_DATA_UV_OFFSET = 3;
170        private final float[] mTriangleVerticesData = {
171                // X, Y, Z, U, V
172                -1.0f, -1.0f, 0, 0.f, 0.f,
173                1.0f, -1.0f, 0, 1.f, 0.f,
174                -1.0f,  1.0f, 0, 0.f, 1.f,
175                1.0f,   1.0f, 0, 1.f, 1.f,
176        };
177
178        @Override
179        public void run() {
180            initGL();
181
182            FloatBuffer triangleVertices = ByteBuffer.allocateDirect(mTriangleVerticesData.length
183                    * FLOAT_SIZE_BYTES).order(ByteOrder.nativeOrder()).asFloatBuffer();
184            triangleVertices.put(mTriangleVerticesData).position(0);
185
186            int texture = loadTexture(R.drawable.large_photo);
187            int program = buildProgram(sSimpleVS, sSimpleFS);
188
189            int attribPosition = glGetAttribLocation(program, "position");
190            checkGlError();
191
192            int attribTexCoords = glGetAttribLocation(program, "texCoords");
193            checkGlError();
194
195            int uniformTexture = glGetUniformLocation(program, "texture");
196            checkGlError();
197
198            glBindTexture(GL_TEXTURE_2D, texture);
199            checkGlError();
200
201            glUseProgram(program);
202            checkGlError();
203
204            glEnableVertexAttribArray(attribPosition);
205            checkGlError();
206
207            glEnableVertexAttribArray(attribTexCoords);
208            checkGlError();
209
210            glUniform1i(texture, 0);
211            checkGlError();
212
213            while (!mFinished) {
214                checkCurrent();
215
216                Log.d(LOG_TAG, "Rendering frame");
217
218                glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
219                checkGlError();
220
221                glClear(GL_COLOR_BUFFER_BIT);
222                checkGlError();
223
224                // drawQuad
225                triangleVertices.position(TRIANGLE_VERTICES_DATA_POS_OFFSET);
226                glVertexAttribPointer(attribPosition, 3, GL_FLOAT, false,
227                        TRIANGLE_VERTICES_DATA_STRIDE_BYTES, triangleVertices);
228
229                triangleVertices.position(TRIANGLE_VERTICES_DATA_UV_OFFSET);
230                glVertexAttribPointer(attribTexCoords, 3, GL_FLOAT, false,
231                        TRIANGLE_VERTICES_DATA_STRIDE_BYTES, triangleVertices);
232
233                glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
234
235                if (!mEgl.eglSwapBuffers(mEglDisplay, mEglSurface)) {
236                    throw new RuntimeException("Cannot swap buffers");
237                }
238                checkEglError();
239
240                try {
241                    Thread.sleep(20);
242                } catch (InterruptedException e) {
243                    // Ignore
244                }
245            }
246
247            finishGL();
248        }
249
250        private int loadTexture(int resource) {
251            int[] textures = new int[1];
252
253            glActiveTexture(GL_TEXTURE0);
254            glGenTextures(1, textures, 0);
255            checkGlError();
256
257            int texture = textures[0];
258            glBindTexture(GL_TEXTURE_2D, texture);
259            checkGlError();
260
261            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
262            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
263
264            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
265            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
266
267            Bitmap bitmap = BitmapFactory.decodeResource(mResources, resource);
268
269            GLUtils.texImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bitmap, GL_UNSIGNED_BYTE, 0);
270            checkGlError();
271
272            bitmap.recycle();
273
274            return texture;
275        }
276
277        private int buildProgram(String vertex, String fragment) {
278            int vertexShader = buildShader(vertex, GL_VERTEX_SHADER);
279            if (vertexShader == 0) return 0;
280
281            int fragmentShader = buildShader(fragment, GL_FRAGMENT_SHADER);
282            if (fragmentShader == 0) return 0;
283
284            int program = glCreateProgram();
285            glAttachShader(program, vertexShader);
286            checkGlError();
287
288            glAttachShader(program, fragmentShader);
289            checkGlError();
290
291            glLinkProgram(program);
292            checkGlError();
293
294            int[] status = new int[1];
295            glGetProgramiv(program, GL_LINK_STATUS, status, 0);
296            if (status[0] != GL_TRUE) {
297                String error = glGetProgramInfoLog(program);
298                Log.d(LOG_TAG, "Error while linking program:\n" + error);
299                glDeleteShader(vertexShader);
300                glDeleteShader(fragmentShader);
301                glDeleteProgram(program);
302                return 0;
303            }
304
305            return program;
306        }
307
308        private int buildShader(String source, int type) {
309            int shader = glCreateShader(type);
310
311            glShaderSource(shader, source);
312            checkGlError();
313
314            glCompileShader(shader);
315            checkGlError();
316
317            int[] status = new int[1];
318            glGetShaderiv(shader, GL_COMPILE_STATUS, status, 0);
319            if (status[0] != GL_TRUE) {
320                String error = glGetShaderInfoLog(shader);
321                Log.d(LOG_TAG, "Error while compiling shader:\n" + error);
322                glDeleteShader(shader);
323                return 0;
324            }
325
326            return shader;
327        }
328
329        private void checkEglError() {
330            int error = mEgl.eglGetError();
331            if (error != EGL10.EGL_SUCCESS) {
332                Log.w(LOG_TAG, "EGL error = 0x" + Integer.toHexString(error));
333            }
334        }
335
336        private void checkGlError() {
337            int error = glGetError();
338            if (error != GL_NO_ERROR) {
339                Log.w(LOG_TAG, "GL error = 0x" + Integer.toHexString(error));
340            }
341        }
342
343        private void finishGL() {
344            mEgl.eglDestroyContext(mEglDisplay, mEglContext);
345            mEgl.eglDestroySurface(mEglDisplay, mEglSurface);
346        }
347
348        private void checkCurrent() {
349            if (!mEglContext.equals(mEgl.eglGetCurrentContext()) ||
350                    !mEglSurface.equals(mEgl.eglGetCurrentSurface(EGL10.EGL_DRAW))) {
351                if (!mEgl.eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext)) {
352                    throw new RuntimeException("eglMakeCurrent failed "
353                            + getEGLErrorString(mEgl.eglGetError()));
354                }
355            }
356        }
357
358        private void initGL() {
359            mEgl = (EGL10) EGLContext.getEGL();
360
361            mEglDisplay = mEgl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);
362            if (mEglDisplay == EGL10.EGL_NO_DISPLAY) {
363                throw new RuntimeException("eglGetDisplay failed "
364                        + getEGLErrorString(mEgl.eglGetError()));
365            }
366
367            int[] version = new int[2];
368            if (!mEgl.eglInitialize(mEglDisplay, version)) {
369                throw new RuntimeException("eglInitialize failed " +
370                        getEGLErrorString(mEgl.eglGetError()));
371            }
372
373            mEglConfig = chooseEglConfig();
374            if (mEglConfig == null) {
375                throw new RuntimeException("eglConfig not initialized");
376            }
377
378            mEglContext = createContext(mEgl, mEglDisplay, mEglConfig);
379
380            mEglSurface = mEgl.eglCreateWindowSurface(mEglDisplay, mEglConfig, mSurface, null);
381
382            if (mEglSurface == null || mEglSurface == EGL10.EGL_NO_SURFACE) {
383                int error = mEgl.eglGetError();
384                if (error == EGL10.EGL_BAD_NATIVE_WINDOW) {
385                    Log.e(LOG_TAG, "createWindowSurface returned EGL_BAD_NATIVE_WINDOW.");
386                    return;
387                }
388                throw new RuntimeException("createWindowSurface failed "
389                        + getEGLErrorString(error));
390            }
391
392            if (!mEgl.eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext)) {
393                throw new RuntimeException("eglMakeCurrent failed "
394                        + getEGLErrorString(mEgl.eglGetError()));
395            }
396
397            mGL = mEglContext.getGL();
398        }
399
400
401        EGLContext createContext(EGL10 egl, EGLDisplay eglDisplay, EGLConfig eglConfig) {
402            int[] attrib_list = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL10.EGL_NONE };
403            return egl.eglCreateContext(eglDisplay, eglConfig, EGL10.EGL_NO_CONTEXT, attrib_list);
404        }
405
406        private EGLConfig chooseEglConfig() {
407            int[] configsCount = new int[1];
408            EGLConfig[] configs = new EGLConfig[1];
409            int[] configSpec = getConfig();
410            if (!mEgl.eglChooseConfig(mEglDisplay, configSpec, configs, 1, configsCount)) {
411                throw new IllegalArgumentException("eglChooseConfig failed " +
412                        getEGLErrorString(mEgl.eglGetError()));
413            } else if (configsCount[0] > 0) {
414                return configs[0];
415            }
416            return null;
417        }
418
419        private int[] getConfig() {
420            return new int[] {
421                    EGL10.EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
422                    EGL10.EGL_RED_SIZE, 8,
423                    EGL10.EGL_GREEN_SIZE, 8,
424                    EGL10.EGL_BLUE_SIZE, 8,
425                    EGL10.EGL_ALPHA_SIZE, 8,
426                    EGL10.EGL_DEPTH_SIZE, 0,
427                    EGL10.EGL_STENCIL_SIZE, 0,
428                    EGL10.EGL_NONE
429            };
430        }
431
432        static String getEGLErrorString(int error) {
433            switch (error) {
434                case EGL10.EGL_SUCCESS:
435                    return "EGL_SUCCESS";
436                case EGL10.EGL_NOT_INITIALIZED:
437                    return "EGL_NOT_INITIALIZED";
438                case EGL10.EGL_BAD_ACCESS:
439                    return "EGL_BAD_ACCESS";
440                case EGL10.EGL_BAD_ALLOC:
441                    return "EGL_BAD_ALLOC";
442                case EGL10.EGL_BAD_ATTRIBUTE:
443                    return "EGL_BAD_ATTRIBUTE";
444                case EGL10.EGL_BAD_CONFIG:
445                    return "EGL_BAD_CONFIG";
446                case EGL10.EGL_BAD_CONTEXT:
447                    return "EGL_BAD_CONTEXT";
448                case EGL10.EGL_BAD_CURRENT_SURFACE:
449                    return "EGL_BAD_CURRENT_SURFACE";
450                case EGL10.EGL_BAD_DISPLAY:
451                    return "EGL_BAD_DISPLAY";
452                case EGL10.EGL_BAD_MATCH:
453                    return "EGL_BAD_MATCH";
454                case EGL10.EGL_BAD_NATIVE_PIXMAP:
455                    return "EGL_BAD_NATIVE_PIXMAP";
456                case EGL10.EGL_BAD_NATIVE_WINDOW:
457                    return "EGL_BAD_NATIVE_WINDOW";
458                case EGL10.EGL_BAD_PARAMETER:
459                    return "EGL_BAD_PARAMETER";
460                case EGL10.EGL_BAD_SURFACE:
461                    return "EGL_BAD_SURFACE";
462                case EGL11.EGL_CONTEXT_LOST:
463                    return "EGL_CONTEXT_LOST";
464                default:
465                    return "0x" + Integer.toHexString(error);
466            }
467        }
468
469        void finish() {
470            mFinished = true;
471        }
472    }
473}
474