GLTextureViewActivity.java revision ec19b4a764d512091a780fc93ced567dfbf80914 
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.Animator;
20import android.animation.AnimatorListenerAdapter;
21import android.animation.ObjectAnimator;
22import android.animation.ValueAnimator;
23import android.app.Activity;
24import android.content.res.Resources;
25import android.graphics.Bitmap;
26import android.graphics.BitmapFactory;
27import android.graphics.SurfaceTexture;
28import android.opengl.GLUtils;
29import android.os.Bundle;
30import android.util.Log;
31import android.view.Gravity;
32import android.view.TextureView;
33import android.view.View;
34import android.view.ViewGroup;
35import android.widget.FrameLayout;
36
37import javax.microedition.khronos.egl.EGL10;
38import javax.microedition.khronos.egl.EGL11;
39import javax.microedition.khronos.egl.EGLConfig;
40import javax.microedition.khronos.egl.EGLContext;
41import javax.microedition.khronos.egl.EGLDisplay;
42import javax.microedition.khronos.egl.EGLSurface;
43import javax.microedition.khronos.opengles.GL;
44
45import java.io.BufferedOutputStream;
46import java.io.FileNotFoundException;
47import java.io.FileOutputStream;
48import java.io.IOException;
49import java.nio.ByteBuffer;
50import java.nio.ByteOrder;
51import java.nio.FloatBuffer;
52
53import static android.opengl.GLES20.*;
54
55@SuppressWarnings({"UnusedDeclaration"})
56public class GLTextureViewActivity extends Activity implements TextureView.SurfaceTextureListener {
57    private RenderThread mRenderThread;
58    private TextureView mTextureView;
59
60    @Override
61    protected void onCreate(Bundle savedInstanceState) {
62        super.onCreate(savedInstanceState);
63
64        mTextureView = new TextureView(this);
65        mTextureView.setSurfaceTextureListener(this);
66        mTextureView.setOnClickListener(new View.OnClickListener() {
67            @Override
68            public void onClick(View v) {
69                Bitmap b = mTextureView.getBitmap(600, 350);
70                BufferedOutputStream out = null;
71                try {
72                    out = new BufferedOutputStream(new FileOutputStream("/sdcard/out.png"));
73                    b.compress(Bitmap.CompressFormat.PNG, 100, out);
74                } catch (FileNotFoundException e) {
75                    e.printStackTrace();
76                } finally {
77                    if (out != null) try {
78                        out.close();
79                    } catch (IOException e) {
80                        e.printStackTrace();
81                    }
82                }
83            }
84        });
85
86        setContentView(mTextureView, new FrameLayout.LayoutParams(
87                ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT,
88                Gravity.CENTER));
89    }
90
91    @Override
92    public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
93        mRenderThread = new RenderThread(getResources(), surface);
94        mRenderThread.start();
95
96        mTextureView.setCameraDistance(5000);
97
98        ObjectAnimator animator = ObjectAnimator.ofFloat(mTextureView, "rotationY", 0.0f, 360.0f);
99        animator.setRepeatMode(ObjectAnimator.REVERSE);
100        animator.setRepeatCount(ObjectAnimator.INFINITE);
101        animator.setDuration(4000);
102        animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
103            @Override
104            public void onAnimationUpdate(ValueAnimator animation) {
105                mTextureView.invalidate();
106            }
107        });
108        animator.start();
109    }
110
111    @Override
112    public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
113    }
114
115    @Override
116    public void onSurfaceTextureDestroyed(SurfaceTexture surface) {
117        mRenderThread.finish();
118        try {
119            mRenderThread.join();
120        } catch (InterruptedException e) {
121            Log.e(RenderThread.LOG_TAG, "Could not wait for render thread");
122        }
123    }
124
125    @Override
126    public void onSurfaceTextureUpdated(SurfaceTexture surface) {
127    }
128
129    private static class RenderThread extends Thread {
130        private static final String LOG_TAG = "GLTextureView";
131
132        static final int EGL_CONTEXT_CLIENT_VERSION = 0x3098;
133        static final int EGL_OPENGL_ES2_BIT = 4;
134
135        private volatile boolean mFinished;
136
137        private final Resources mResources;
138        private final SurfaceTexture mSurface;
139
140        private EGL10 mEgl;
141        private EGLDisplay mEglDisplay;
142        private EGLConfig mEglConfig;
143        private EGLContext mEglContext;
144        private EGLSurface mEglSurface;
145        private GL mGL;
146
147        RenderThread(Resources resources, SurfaceTexture surface) {
148            mResources = resources;
149            mSurface = surface;
150        }
151
152        private static final String sSimpleVS =
153                "attribute vec4 position;\n" +
154                "attribute vec2 texCoords;\n" +
155                "varying vec2 outTexCoords;\n" +
156                "\nvoid main(void) {\n" +
157                "    outTexCoords = texCoords;\n" +
158                "    gl_Position = position;\n" +
159                "}\n\n";
160        private static final String sSimpleFS =
161                "precision mediump float;\n\n" +
162                "varying vec2 outTexCoords;\n" +
163                "uniform sampler2D texture;\n" +
164                "\nvoid main(void) {\n" +
165                "    gl_FragColor = texture2D(texture, outTexCoords);\n" +
166                "}\n\n";
167
168        private static final int FLOAT_SIZE_BYTES = 4;
169        private static final int TRIANGLE_VERTICES_DATA_STRIDE_BYTES = 5 * FLOAT_SIZE_BYTES;
170        private static final int TRIANGLE_VERTICES_DATA_POS_OFFSET = 0;
171        private static final int TRIANGLE_VERTICES_DATA_UV_OFFSET = 3;
172        private final float[] mTriangleVerticesData = {
173                // X, Y, Z, U, V
174                -1.0f, -1.0f, 0, 0.f, 0.f,
175                1.0f, -1.0f, 0, 1.f, 0.f,
176                -1.0f,  1.0f, 0, 0.f, 1.f,
177                1.0f,   1.0f, 0, 1.f, 1.f,
178        };
179
180        @Override
181        public void run() {
182            initGL();
183
184            FloatBuffer triangleVertices = ByteBuffer.allocateDirect(mTriangleVerticesData.length
185                    * FLOAT_SIZE_BYTES).order(ByteOrder.nativeOrder()).asFloatBuffer();
186            triangleVertices.put(mTriangleVerticesData).position(0);
187
188            int texture = loadTexture(R.drawable.large_photo);
189            int program = buildProgram(sSimpleVS, sSimpleFS);
190
191            int attribPosition = glGetAttribLocation(program, "position");
192            checkGlError();
193
194            int attribTexCoords = glGetAttribLocation(program, "texCoords");
195            checkGlError();
196
197            int uniformTexture = glGetUniformLocation(program, "texture");
198            checkGlError();
199
200            glBindTexture(GL_TEXTURE_2D, texture);
201            checkGlError();
202
203            glUseProgram(program);
204            checkGlError();
205
206            glEnableVertexAttribArray(attribPosition);
207            checkGlError();
208
209            glEnableVertexAttribArray(attribTexCoords);
210            checkGlError();
211
212            glUniform1i(texture, 0);
213            checkGlError();
214
215            while (!mFinished) {
216                checkCurrent();
217
218                Log.d(LOG_TAG, "Rendering frame");
219
220                glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
221                checkGlError();
222
223                glClear(GL_COLOR_BUFFER_BIT);
224                checkGlError();
225
226                // drawQuad
227                triangleVertices.position(TRIANGLE_VERTICES_DATA_POS_OFFSET);
228                glVertexAttribPointer(attribPosition, 3, GL_FLOAT, false,
229                        TRIANGLE_VERTICES_DATA_STRIDE_BYTES, triangleVertices);
230
231                triangleVertices.position(TRIANGLE_VERTICES_DATA_UV_OFFSET);
232                glVertexAttribPointer(attribTexCoords, 3, GL_FLOAT, false,
233                        TRIANGLE_VERTICES_DATA_STRIDE_BYTES, triangleVertices);
234
235                glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
236
237                if (!mEgl.eglSwapBuffers(mEglDisplay, mEglSurface)) {
238                    throw new RuntimeException("Cannot swap buffers");
239                }
240                checkEglError();
241
242                try {
243                    Thread.sleep(20);
244                } catch (InterruptedException e) {
245                    // Ignore
246                }
247            }
248
249            finishGL();
250        }
251
252        private int loadTexture(int resource) {
253            int[] textures = new int[1];
254
255            glActiveTexture(GL_TEXTURE0);
256            glGenTextures(1, textures, 0);
257            checkGlError();
258
259            int texture = textures[0];
260            glBindTexture(GL_TEXTURE_2D, texture);
261            checkGlError();
262
263            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
264            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
265
266            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
267            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
268
269            Bitmap bitmap = BitmapFactory.decodeResource(mResources, resource);
270
271            GLUtils.texImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bitmap, GL_UNSIGNED_BYTE, 0);
272            checkGlError();
273
274            bitmap.recycle();
275
276            return texture;
277        }
278
279        private int buildProgram(String vertex, String fragment) {
280            int vertexShader = buildShader(vertex, GL_VERTEX_SHADER);
281            if (vertexShader == 0) return 0;
282
283            int fragmentShader = buildShader(fragment, GL_FRAGMENT_SHADER);
284            if (fragmentShader == 0) return 0;
285
286            int program = glCreateProgram();
287            glAttachShader(program, vertexShader);
288            checkGlError();
289
290            glAttachShader(program, fragmentShader);
291            checkGlError();
292
293            glLinkProgram(program);
294            checkGlError();
295
296            int[] status = new int[1];
297            glGetProgramiv(program, GL_LINK_STATUS, status, 0);
298            if (status[0] != GL_TRUE) {
299                String error = glGetProgramInfoLog(program);
300                Log.d(LOG_TAG, "Error while linking program:\n" + error);
301                glDeleteShader(vertexShader);
302                glDeleteShader(fragmentShader);
303                glDeleteProgram(program);
304                return 0;
305            }
306
307            return program;
308        }
309
310        private int buildShader(String source, int type) {
311            int shader = glCreateShader(type);
312
313            glShaderSource(shader, source);
314            checkGlError();
315
316            glCompileShader(shader);
317            checkGlError();
318
319            int[] status = new int[1];
320            glGetShaderiv(shader, GL_COMPILE_STATUS, status, 0);
321            if (status[0] != GL_TRUE) {
322                String error = glGetShaderInfoLog(shader);
323                Log.d(LOG_TAG, "Error while compiling shader:\n" + error);
324                glDeleteShader(shader);
325                return 0;
326            }
327
328            return shader;
329        }
330
331        private void checkEglError() {
332            int error = mEgl.eglGetError();
333            if (error != EGL10.EGL_SUCCESS) {
334                Log.w(LOG_TAG, "EGL error = 0x" + Integer.toHexString(error));
335            }
336        }
337
338        private void checkGlError() {
339            int error = glGetError();
340            if (error != GL_NO_ERROR) {
341                Log.w(LOG_TAG, "GL error = 0x" + Integer.toHexString(error));
342            }
343        }
344
345        private void finishGL() {
346            mEgl.eglDestroyContext(mEglDisplay, mEglContext);
347            mEgl.eglDestroySurface(mEglDisplay, mEglSurface);
348        }
349
350        private void checkCurrent() {
351            if (!mEglContext.equals(mEgl.eglGetCurrentContext()) ||
352                    !mEglSurface.equals(mEgl.eglGetCurrentSurface(EGL10.EGL_DRAW))) {
353                if (!mEgl.eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext)) {
354                    throw new RuntimeException("eglMakeCurrent failed "
355                            + getEGLErrorString(mEgl.eglGetError()));
356                }
357            }
358        }
359
360        private void initGL() {
361            mEgl = (EGL10) EGLContext.getEGL();
362
363            mEglDisplay = mEgl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);
364            if (mEglDisplay == EGL10.EGL_NO_DISPLAY) {
365                throw new RuntimeException("eglGetDisplay failed "
366                        + getEGLErrorString(mEgl.eglGetError()));
367            }
368
369            int[] version = new int[2];
370            if (!mEgl.eglInitialize(mEglDisplay, version)) {
371                throw new RuntimeException("eglInitialize failed " +
372                        getEGLErrorString(mEgl.eglGetError()));
373            }
374
375            mEglConfig = chooseEglConfig();
376            if (mEglConfig == null) {
377                throw new RuntimeException("eglConfig not initialized");
378            }
379
380            mEglContext = createContext(mEgl, mEglDisplay, mEglConfig);
381
382            mEglSurface = mEgl.eglCreateWindowSurface(mEglDisplay, mEglConfig, mSurface, null);
383
384            if (mEglSurface == null || mEglSurface == EGL10.EGL_NO_SURFACE) {
385                int error = mEgl.eglGetError();
386                if (error == EGL10.EGL_BAD_NATIVE_WINDOW) {
387                    Log.e(LOG_TAG, "createWindowSurface returned EGL_BAD_NATIVE_WINDOW.");
388                    return;
389                }
390                throw new RuntimeException("createWindowSurface failed "
391                        + getEGLErrorString(error));
392            }
393
394            if (!mEgl.eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext)) {
395                throw new RuntimeException("eglMakeCurrent failed "
396                        + getEGLErrorString(mEgl.eglGetError()));
397            }
398
399            mGL = mEglContext.getGL();
400        }
401
402
403        EGLContext createContext(EGL10 egl, EGLDisplay eglDisplay, EGLConfig eglConfig) {
404            int[] attrib_list = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL10.EGL_NONE };
405            return egl.eglCreateContext(eglDisplay, eglConfig, EGL10.EGL_NO_CONTEXT, attrib_list);
406        }
407
408        private EGLConfig chooseEglConfig() {
409            int[] configsCount = new int[1];
410            EGLConfig[] configs = new EGLConfig[1];
411            int[] configSpec = getConfig();
412            if (!mEgl.eglChooseConfig(mEglDisplay, configSpec, configs, 1, configsCount)) {
413                throw new IllegalArgumentException("eglChooseConfig failed " +
414                        getEGLErrorString(mEgl.eglGetError()));
415            } else if (configsCount[0] > 0) {
416                return configs[0];
417            }
418            return null;
419        }
420
421        private int[] getConfig() {
422            return new int[] {
423                    EGL10.EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
424                    EGL10.EGL_RED_SIZE, 8,
425                    EGL10.EGL_GREEN_SIZE, 8,
426                    EGL10.EGL_BLUE_SIZE, 8,
427                    EGL10.EGL_ALPHA_SIZE, 8,
428                    EGL10.EGL_DEPTH_SIZE, 0,
429                    EGL10.EGL_STENCIL_SIZE, 0,
430                    EGL10.EGL_NONE
431            };
432        }
433
434        static String getEGLErrorString(int error) {
435            switch (error) {
436                case EGL10.EGL_SUCCESS:
437                    return "EGL_SUCCESS";
438                case EGL10.EGL_NOT_INITIALIZED:
439                    return "EGL_NOT_INITIALIZED";
440                case EGL10.EGL_BAD_ACCESS:
441                    return "EGL_BAD_ACCESS";
442                case EGL10.EGL_BAD_ALLOC:
443                    return "EGL_BAD_ALLOC";
444                case EGL10.EGL_BAD_ATTRIBUTE:
445                    return "EGL_BAD_ATTRIBUTE";
446                case EGL10.EGL_BAD_CONFIG:
447                    return "EGL_BAD_CONFIG";
448                case EGL10.EGL_BAD_CONTEXT:
449                    return "EGL_BAD_CONTEXT";
450                case EGL10.EGL_BAD_CURRENT_SURFACE:
451                    return "EGL_BAD_CURRENT_SURFACE";
452                case EGL10.EGL_BAD_DISPLAY:
453                    return "EGL_BAD_DISPLAY";
454                case EGL10.EGL_BAD_MATCH:
455                    return "EGL_BAD_MATCH";
456                case EGL10.EGL_BAD_NATIVE_PIXMAP:
457                    return "EGL_BAD_NATIVE_PIXMAP";
458                case EGL10.EGL_BAD_NATIVE_WINDOW:
459                    return "EGL_BAD_NATIVE_WINDOW";
460                case EGL10.EGL_BAD_PARAMETER:
461                    return "EGL_BAD_PARAMETER";
462                case EGL10.EGL_BAD_SURFACE:
463                    return "EGL_BAD_SURFACE";
464                case EGL11.EGL_CONTEXT_LOST:
465                    return "EGL_CONTEXT_LOST";
466                default:
467                    return "0x" + Integer.toHexString(error);
468            }
469        }
470
471        void finish() {
472            mFinished = true;
473        }
474    }
475}
476