GLTextureViewActivity.java revision cfacbeadffb5dccbf0434d9c05b19430a5237c3b 
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 void 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    }
121
122    @Override
123    public void onSurfaceTextureUpdated(SurfaceTexture surface) {
124    }
125
126    private static class RenderThread extends Thread {
127        private static final String LOG_TAG = "GLTextureView";
128
129        static final int EGL_CONTEXT_CLIENT_VERSION = 0x3098;
130        static final int EGL_OPENGL_ES2_BIT = 4;
131
132        private volatile boolean mFinished;
133
134        private final Resources mResources;
135        private final SurfaceTexture mSurface;
136
137        private EGL10 mEgl;
138        private EGLDisplay mEglDisplay;
139        private EGLConfig mEglConfig;
140        private EGLContext mEglContext;
141        private EGLSurface mEglSurface;
142        private GL mGL;
143
144        RenderThread(Resources resources, SurfaceTexture surface) {
145            mResources = resources;
146            mSurface = surface;
147        }
148
149        private static final String sSimpleVS =
150                "attribute vec4 position;\n" +
151                "attribute vec2 texCoords;\n" +
152                "varying vec2 outTexCoords;\n" +
153                "\nvoid main(void) {\n" +
154                "    outTexCoords = texCoords;\n" +
155                "    gl_Position = position;\n" +
156                "}\n\n";
157        private static final String sSimpleFS =
158                "precision mediump float;\n\n" +
159                "varying vec2 outTexCoords;\n" +
160                "uniform sampler2D texture;\n" +
161                "\nvoid main(void) {\n" +
162                "    gl_FragColor = texture2D(texture, outTexCoords);\n" +
163                "}\n\n";
164
165        private static final int FLOAT_SIZE_BYTES = 4;
166        private static final int TRIANGLE_VERTICES_DATA_STRIDE_BYTES = 5 * FLOAT_SIZE_BYTES;
167        private static final int TRIANGLE_VERTICES_DATA_POS_OFFSET = 0;
168        private static final int TRIANGLE_VERTICES_DATA_UV_OFFSET = 3;
169        private final float[] mTriangleVerticesData = {
170                // X, Y, Z, U, V
171                -1.0f, -1.0f, 0, 0.f, 0.f,
172                1.0f, -1.0f, 0, 1.f, 0.f,
173                -1.0f,  1.0f, 0, 0.f, 1.f,
174                1.0f,   1.0f, 0, 1.f, 1.f,
175        };
176
177        @Override
178        public void run() {
179            initGL();
180
181            FloatBuffer triangleVertices = ByteBuffer.allocateDirect(mTriangleVerticesData.length
182                    * FLOAT_SIZE_BYTES).order(ByteOrder.nativeOrder()).asFloatBuffer();
183            triangleVertices.put(mTriangleVerticesData).position(0);
184
185            int texture = loadTexture(R.drawable.large_photo);
186            int program = buildProgram(sSimpleVS, sSimpleFS);
187
188            int attribPosition = glGetAttribLocation(program, "position");
189            checkGlError();
190
191            int attribTexCoords = glGetAttribLocation(program, "texCoords");
192            checkGlError();
193
194            int uniformTexture = glGetUniformLocation(program, "texture");
195            checkGlError();
196
197            glBindTexture(GL_TEXTURE_2D, texture);
198            checkGlError();
199
200            glUseProgram(program);
201            checkGlError();
202
203            glEnableVertexAttribArray(attribPosition);
204            checkGlError();
205
206            glEnableVertexAttribArray(attribTexCoords);
207            checkGlError();
208
209            glUniform1i(texture, 0);
210            checkGlError();
211
212            while (!mFinished) {
213                checkCurrent();
214
215                Log.d(LOG_TAG, "Rendering frame");
216
217                glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
218                checkGlError();
219
220                glClear(GL_COLOR_BUFFER_BIT);
221                checkGlError();
222
223                // drawQuad
224                triangleVertices.position(TRIANGLE_VERTICES_DATA_POS_OFFSET);
225                glVertexAttribPointer(attribPosition, 3, GL_FLOAT, false,
226                        TRIANGLE_VERTICES_DATA_STRIDE_BYTES, triangleVertices);
227
228                triangleVertices.position(TRIANGLE_VERTICES_DATA_UV_OFFSET);
229                glVertexAttribPointer(attribTexCoords, 3, GL_FLOAT, false,
230                        TRIANGLE_VERTICES_DATA_STRIDE_BYTES, triangleVertices);
231
232                glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
233
234                if (!mEgl.eglSwapBuffers(mEglDisplay, mEglSurface)) {
235                    throw new RuntimeException("Cannot swap buffers");
236                }
237                checkEglError();
238
239                try {
240                    Thread.sleep(20);
241                } catch (InterruptedException e) {
242                    // Ignore
243                }
244            }
245
246            finishGL();
247        }
248
249        private int loadTexture(int resource) {
250            int[] textures = new int[1];
251
252            glActiveTexture(GL_TEXTURE0);
253            glGenTextures(1, textures, 0);
254            checkGlError();
255
256            int texture = textures[0];
257            glBindTexture(GL_TEXTURE_2D, texture);
258            checkGlError();
259
260            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
261            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
262
263            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
264            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
265
266            Bitmap bitmap = BitmapFactory.decodeResource(mResources, resource);
267
268            GLUtils.texImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bitmap, GL_UNSIGNED_BYTE, 0);
269            checkGlError();
270
271            bitmap.recycle();
272
273            return texture;
274        }
275
276        private int buildProgram(String vertex, String fragment) {
277            int vertexShader = buildShader(vertex, GL_VERTEX_SHADER);
278            if (vertexShader == 0) return 0;
279
280            int fragmentShader = buildShader(fragment, GL_FRAGMENT_SHADER);
281            if (fragmentShader == 0) return 0;
282
283            int program = glCreateProgram();
284            glAttachShader(program, vertexShader);
285            checkGlError();
286
287            glAttachShader(program, fragmentShader);
288            checkGlError();
289
290            glLinkProgram(program);
291            checkGlError();
292
293            int[] status = new int[1];
294            glGetProgramiv(program, GL_LINK_STATUS, status, 0);
295            if (status[0] != GL_TRUE) {
296                String error = glGetProgramInfoLog(program);
297                Log.d(LOG_TAG, "Error while linking program:\n" + error);
298                glDeleteShader(vertexShader);
299                glDeleteShader(fragmentShader);
300                glDeleteProgram(program);
301                return 0;
302            }
303
304            return program;
305        }
306
307        private int buildShader(String source, int type) {
308            int shader = glCreateShader(type);
309
310            glShaderSource(shader, source);
311            checkGlError();
312
313            glCompileShader(shader);
314            checkGlError();
315
316            int[] status = new int[1];
317            glGetShaderiv(shader, GL_COMPILE_STATUS, status, 0);
318            if (status[0] != GL_TRUE) {
319                String error = glGetShaderInfoLog(shader);
320                Log.d(LOG_TAG, "Error while compiling shader:\n" + error);
321                glDeleteShader(shader);
322                return 0;
323            }
324
325            return shader;
326        }
327
328        private void checkEglError() {
329            int error = mEgl.eglGetError();
330            if (error != EGL10.EGL_SUCCESS) {
331                Log.w(LOG_TAG, "EGL error = 0x" + Integer.toHexString(error));
332            }
333        }
334
335        private void checkGlError() {
336            int error = glGetError();
337            if (error != GL_NO_ERROR) {
338                Log.w(LOG_TAG, "GL error = 0x" + Integer.toHexString(error));
339            }
340        }
341
342        private void finishGL() {
343            mEgl.eglDestroyContext(mEglDisplay, mEglContext);
344            mEgl.eglDestroySurface(mEglDisplay, mEglSurface);
345        }
346
347        private void checkCurrent() {
348            if (!mEglContext.equals(mEgl.eglGetCurrentContext()) ||
349                    !mEglSurface.equals(mEgl.eglGetCurrentSurface(EGL10.EGL_DRAW))) {
350                if (!mEgl.eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext)) {
351                    throw new RuntimeException("eglMakeCurrent failed "
352                            + getEGLErrorString(mEgl.eglGetError()));
353                }
354            }
355        }
356
357        private void initGL() {
358            mEgl = (EGL10) EGLContext.getEGL();
359
360            mEglDisplay = mEgl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY);
361            if (mEglDisplay == EGL10.EGL_NO_DISPLAY) {
362                throw new RuntimeException("eglGetDisplay failed "
363                        + getEGLErrorString(mEgl.eglGetError()));
364            }
365
366            int[] version = new int[2];
367            if (!mEgl.eglInitialize(mEglDisplay, version)) {
368                throw new RuntimeException("eglInitialize failed " +
369                        getEGLErrorString(mEgl.eglGetError()));
370            }
371
372            mEglConfig = chooseEglConfig();
373            if (mEglConfig == null) {
374                throw new RuntimeException("eglConfig not initialized");
375            }
376
377            mEglContext = createContext(mEgl, mEglDisplay, mEglConfig);
378
379            mEglSurface = mEgl.eglCreateWindowSurface(mEglDisplay, mEglConfig, mSurface, null);
380
381            if (mEglSurface == null || mEglSurface == EGL10.EGL_NO_SURFACE) {
382                int error = mEgl.eglGetError();
383                if (error == EGL10.EGL_BAD_NATIVE_WINDOW) {
384                    Log.e(LOG_TAG, "createWindowSurface returned EGL_BAD_NATIVE_WINDOW.");
385                    return;
386                }
387                throw new RuntimeException("createWindowSurface failed "
388                        + getEGLErrorString(error));
389            }
390
391            if (!mEgl.eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext)) {
392                throw new RuntimeException("eglMakeCurrent failed "
393                        + getEGLErrorString(mEgl.eglGetError()));
394            }
395
396            mGL = mEglContext.getGL();
397        }
398
399
400        EGLContext createContext(EGL10 egl, EGLDisplay eglDisplay, EGLConfig eglConfig) {
401            int[] attrib_list = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL10.EGL_NONE };
402            return egl.eglCreateContext(eglDisplay, eglConfig, EGL10.EGL_NO_CONTEXT, attrib_list);
403        }
404
405        private EGLConfig chooseEglConfig() {
406            int[] configsCount = new int[1];
407            EGLConfig[] configs = new EGLConfig[1];
408            int[] configSpec = getConfig();
409            if (!mEgl.eglChooseConfig(mEglDisplay, configSpec, configs, 1, configsCount)) {
410                throw new IllegalArgumentException("eglChooseConfig failed " +
411                        getEGLErrorString(mEgl.eglGetError()));
412            } else if (configsCount[0] > 0) {
413                return configs[0];
414            }
415            return null;
416        }
417
418        private int[] getConfig() {
419            return new int[] {
420                    EGL10.EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
421                    EGL10.EGL_RED_SIZE, 8,
422                    EGL10.EGL_GREEN_SIZE, 8,
423                    EGL10.EGL_BLUE_SIZE, 8,
424                    EGL10.EGL_ALPHA_SIZE, 8,
425                    EGL10.EGL_DEPTH_SIZE, 0,
426                    EGL10.EGL_STENCIL_SIZE, 0,
427                    EGL10.EGL_NONE
428            };
429        }
430
431        static String getEGLErrorString(int error) {
432            switch (error) {
433                case EGL10.EGL_SUCCESS:
434                    return "EGL_SUCCESS";
435                case EGL10.EGL_NOT_INITIALIZED:
436                    return "EGL_NOT_INITIALIZED";
437                case EGL10.EGL_BAD_ACCESS:
438                    return "EGL_BAD_ACCESS";
439                case EGL10.EGL_BAD_ALLOC:
440                    return "EGL_BAD_ALLOC";
441                case EGL10.EGL_BAD_ATTRIBUTE:
442                    return "EGL_BAD_ATTRIBUTE";
443                case EGL10.EGL_BAD_CONFIG:
444                    return "EGL_BAD_CONFIG";
445                case EGL10.EGL_BAD_CONTEXT:
446                    return "EGL_BAD_CONTEXT";
447                case EGL10.EGL_BAD_CURRENT_SURFACE:
448                    return "EGL_BAD_CURRENT_SURFACE";
449                case EGL10.EGL_BAD_DISPLAY:
450                    return "EGL_BAD_DISPLAY";
451                case EGL10.EGL_BAD_MATCH:
452                    return "EGL_BAD_MATCH";
453                case EGL10.EGL_BAD_NATIVE_PIXMAP:
454                    return "EGL_BAD_NATIVE_PIXMAP";
455                case EGL10.EGL_BAD_NATIVE_WINDOW:
456                    return "EGL_BAD_NATIVE_WINDOW";
457                case EGL10.EGL_BAD_PARAMETER:
458                    return "EGL_BAD_PARAMETER";
459                case EGL10.EGL_BAD_SURFACE:
460                    return "EGL_BAD_SURFACE";
461                case EGL11.EGL_CONTEXT_LOST:
462                    return "EGL_CONTEXT_LOST";
463                default:
464                    return "0x" + Integer.toHexString(error);
465            }
466        }
467
468        void finish() {
469            mFinished = true;
470        }
471    }
472}
473