2 * Copyright (C) 2012 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #include <GLES2/gl2.h>
18 #include <GLES2/gl2ext.h>
20 #include <ui/DisplayInfo.h>
21 #include <gui/SurfaceComposerClient.h>
27 GLHelper::GLHelper() :
28 mGraphicBufferAlloc(new GraphicBufferAlloc()),
29 mDisplay(EGL_NO_DISPLAY),
30 mContext(EGL_NO_CONTEXT),
31 mDummySurface(EGL_NO_SURFACE),
33 mShaderPrograms(NULL),
37 GLHelper::~GLHelper() {
40 bool GLHelper::setUp(const ShaderDesc* shaderDescs, size_t numShaders) {
43 mDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
44 if (mDisplay == EGL_NO_DISPLAY) {
45 fprintf(stderr, "eglGetDisplay error: %#x\n", eglGetError());
51 result = eglInitialize(mDisplay, &majorVersion, &minorVersion);
52 if (result != EGL_TRUE) {
53 fprintf(stderr, "eglInitialize error: %#x\n", eglGetError());
57 EGLint numConfigs = 0;
58 EGLint configAttribs[] = {
59 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
60 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
67 result = eglChooseConfig(mDisplay, configAttribs, &mConfig, 1,
69 if (result != EGL_TRUE) {
70 fprintf(stderr, "eglChooseConfig error: %#x\n", eglGetError());
74 EGLint contextAttribs[] = {
75 EGL_CONTEXT_CLIENT_VERSION, 2,
78 mContext = eglCreateContext(mDisplay, mConfig, EGL_NO_CONTEXT,
80 if (mContext == EGL_NO_CONTEXT) {
81 fprintf(stderr, "eglCreateContext error: %#x\n", eglGetError());
85 bool resultb = createNamedSurfaceTexture(0, 1, 1, &mDummyGLConsumer,
91 resultb = makeCurrent(mDummySurface);
96 resultb = setUpShaders(shaderDescs, numShaders);
104 void GLHelper::tearDown() {
105 if (mShaderPrograms != NULL) {
106 delete[] mShaderPrograms;
107 mShaderPrograms = NULL;
110 if (mSurfaceComposerClient != NULL) {
111 mSurfaceComposerClient->dispose();
112 mSurfaceComposerClient.clear();
115 if (mDisplay != EGL_NO_DISPLAY) {
116 eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE,
120 if (mContext != EGL_NO_CONTEXT) {
121 eglDestroyContext(mDisplay, mContext);
124 if (mDummySurface != EGL_NO_SURFACE) {
125 eglDestroySurface(mDisplay, mDummySurface);
128 mDisplay = EGL_NO_DISPLAY;
129 mContext = EGL_NO_CONTEXT;
130 mDummySurface = EGL_NO_SURFACE;
131 mDummyGLConsumer.clear();
135 bool GLHelper::makeCurrent(EGLSurface surface) {
138 result = eglMakeCurrent(mDisplay, surface, surface, mContext);
139 if (result != EGL_TRUE) {
140 fprintf(stderr, "eglMakeCurrent error: %#x\n", eglGetError());
145 eglQuerySurface(mDisplay, surface, EGL_WIDTH, &w);
146 eglQuerySurface(mDisplay, surface, EGL_HEIGHT, &h);
147 glViewport(0, 0, w, h);
152 bool GLHelper::createSurfaceTexture(uint32_t w, uint32_t h,
153 sp<GLConsumer>* glConsumer, EGLSurface* surface,
155 if (!makeCurrent(mDummySurface)) {
160 glGenTextures(1, name);
162 fprintf(stderr, "glGenTextures error: %#x\n", glGetError());
166 return createNamedSurfaceTexture(*name, w, h, glConsumer, surface);
169 void GLHelper::destroySurface(EGLSurface* surface) {
170 if (eglGetCurrentSurface(EGL_READ) == *surface ||
171 eglGetCurrentSurface(EGL_DRAW) == *surface) {
172 eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE,
175 eglDestroySurface(mDisplay, *surface);
176 *surface = EGL_NO_SURFACE;
179 bool GLHelper::swapBuffers(EGLSurface surface) {
181 result = eglSwapBuffers(mDisplay, surface);
182 if (result != EGL_TRUE) {
183 fprintf(stderr, "eglSwapBuffers error: %#x\n", eglGetError());
189 bool GLHelper::getShaderProgram(const char* name, GLuint* outPgm) {
190 for (size_t i = 0; i < mNumShaders; i++) {
191 if (strcmp(mShaderDescs[i].name, name) == 0) {
192 *outPgm = mShaderPrograms[i];
197 fprintf(stderr, "unknown shader name: \"%s\"\n", name);
202 bool GLHelper::createNamedSurfaceTexture(GLuint name, uint32_t w, uint32_t h,
203 sp<GLConsumer>* glConsumer, EGLSurface* surface) {
204 sp<IGraphicBufferProducer> producer;
205 sp<IGraphicBufferConsumer> consumer;
206 BufferQueue::createBufferQueue(&producer, &consumer, mGraphicBufferAlloc);
207 sp<GLConsumer> glc = new GLConsumer(consumer, name,
208 GL_TEXTURE_EXTERNAL_OES, false, true);
209 glc->setDefaultBufferSize(w, h);
210 glc->setDefaultMaxBufferCount(3);
211 glc->setConsumerUsageBits(GRALLOC_USAGE_HW_COMPOSER);
213 sp<ANativeWindow> anw = new Surface(producer);
214 EGLSurface s = eglCreateWindowSurface(mDisplay, mConfig, anw.get(), NULL);
215 if (s == EGL_NO_SURFACE) {
216 fprintf(stderr, "eglCreateWindowSurface error: %#x\n", eglGetError());
225 bool GLHelper::computeWindowScale(uint32_t w, uint32_t h, float* scale) {
226 sp<IBinder> dpy = mSurfaceComposerClient->getBuiltInDisplay(0);
228 fprintf(stderr, "SurfaceComposer::getBuiltInDisplay failed.\n");
233 status_t err = mSurfaceComposerClient->getDisplayInfo(dpy, &info);
234 if (err != NO_ERROR) {
235 fprintf(stderr, "SurfaceComposer::getDisplayInfo failed: %#x\n", err);
239 float scaleX = float(info.w) / float(w);
240 float scaleY = float(info.h) / float(h);
241 *scale = scaleX < scaleY ? scaleX : scaleY;
246 bool GLHelper::createWindowSurface(uint32_t w, uint32_t h,
247 sp<SurfaceControl>* surfaceControl, EGLSurface* surface) {
251 if (mSurfaceComposerClient == NULL) {
252 mSurfaceComposerClient = new SurfaceComposerClient;
254 err = mSurfaceComposerClient->initCheck();
255 if (err != NO_ERROR) {
256 fprintf(stderr, "SurfaceComposerClient::initCheck error: %#x\n", err);
260 sp<SurfaceControl> sc = mSurfaceComposerClient->createSurface(
261 String8("Benchmark"), w, h, PIXEL_FORMAT_RGBA_8888, 0);
262 if (sc == NULL || !sc->isValid()) {
263 fprintf(stderr, "Failed to create SurfaceControl.\n");
268 result = computeWindowScale(w, h, &scale);
273 SurfaceComposerClient::openGlobalTransaction();
274 err = sc->setLayer(0x7FFFFFFF);
275 if (err != NO_ERROR) {
276 fprintf(stderr, "SurfaceComposer::setLayer error: %#x\n", err);
279 err = sc->setMatrix(scale, 0.0f, 0.0f, scale);
280 if (err != NO_ERROR) {
281 fprintf(stderr, "SurfaceComposer::setMatrix error: %#x\n", err);
286 if (err != NO_ERROR) {
287 fprintf(stderr, "SurfaceComposer::show error: %#x\n", err);
290 SurfaceComposerClient::closeGlobalTransaction();
292 sp<ANativeWindow> anw = sc->getSurface();
293 EGLSurface s = eglCreateWindowSurface(mDisplay, mConfig, anw.get(), NULL);
294 if (s == EGL_NO_SURFACE) {
295 fprintf(stderr, "eglCreateWindowSurface error: %#x\n", eglGetError());
299 *surfaceControl = sc;
304 static bool compileShader(GLenum shaderType, const char* src,
306 GLuint shader = glCreateShader(shaderType);
308 fprintf(stderr, "glCreateShader error: %#x\n", glGetError());
312 glShaderSource(shader, 1, &src, NULL);
313 glCompileShader(shader);
316 glGetShaderiv(shader, GL_COMPILE_STATUS, &compiled);
319 glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &infoLen);
321 char* buf = new char[infoLen];
323 glGetShaderInfoLog(shader, infoLen, NULL, buf);
324 fprintf(stderr, "Shader compile log:\n%s\n", buf);
328 glDeleteShader(shader);
335 static void printShaderSource(const char* const* src) {
336 for (size_t i = 0; i < MAX_SHADER_LINES && src[i] != NULL; i++) {
337 fprintf(stderr, "%3zu: %s\n", i+1, src[i]);
341 static const char* makeShaderString(const char* const* src) {
343 for (size_t i = 0; i < MAX_SHADER_LINES && src[i] != NULL; i++) {
344 // The +1 is for the '\n' that will be added.
345 len += strlen(src[i]) + 1;
348 char* result = new char[len+1];
350 for (size_t i = 0; i < MAX_SHADER_LINES && src[i] != NULL; i++) {
352 end += strlen(src[i]);
361 static bool compileShaderLines(GLenum shaderType, const char* const* lines,
363 const char* src = makeShaderString(lines);
364 bool result = compileShader(shaderType, src, outShader);
366 fprintf(stderr, "Shader source:\n");
367 printShaderSource(lines);
375 static bool linkShaderProgram(GLuint vs, GLuint fs, GLuint* outPgm) {
376 GLuint program = glCreateProgram();
378 fprintf(stderr, "glCreateProgram error: %#x\n", glGetError());
382 glAttachShader(program, vs);
383 glAttachShader(program, fs);
384 glLinkProgram(program);
385 GLint linkStatus = GL_FALSE;
386 glGetProgramiv(program, GL_LINK_STATUS, &linkStatus);
387 if (linkStatus != GL_TRUE) {
389 glGetProgramiv(program, GL_INFO_LOG_LENGTH, &bufLength);
391 char* buf = new char[bufLength];
393 glGetProgramInfoLog(program, bufLength, NULL, buf);
394 fprintf(stderr, "Program link log:\n%s\n", buf);
398 glDeleteProgram(program);
406 bool GLHelper::setUpShaders(const ShaderDesc* shaderDescs, size_t numShaders) {
407 mShaderPrograms = new GLuint[numShaders];
410 for (size_t i = 0; i < numShaders && result; i++) {
413 result = compileShaderLines(GL_VERTEX_SHADER,
414 shaderDescs[i].vertexShader, &vs);
419 result = compileShaderLines(GL_FRAGMENT_SHADER,
420 shaderDescs[i].fragmentShader, &fs);
426 result = linkShaderProgram(vs, fs, &mShaderPrograms[i]);
431 mNumShaders = numShaders;
432 mShaderDescs = shaderDescs;
437 bool GLHelper::getDitherTexture(GLuint* outTexName) {
438 if (mDitherTexture == 0) {
439 const uint8_t pattern[] = {
446 glGenTextures(1, &mDitherTexture);
447 glBindTexture(GL_TEXTURE_2D, mDitherTexture);
449 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
450 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
452 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
453 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
455 glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, DITHER_KERNEL_SIZE,
456 DITHER_KERNEL_SIZE, 0, GL_ALPHA, GL_UNSIGNED_BYTE, &pattern);
459 *outTexName = mDitherTexture;