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POAndroid NDK Native Activity OpenGL ES 1.1 triangle won't show up
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2013-01-14T21:35:26.217
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I'm new to Android NDK and Native Activity, I liked to create a triangle in the middle of the screen but no matter how I tried I wouldn't show up! Here is my initialize method: <pre><code>void Engine::initialize() { LOGI("Engine::initialize fired!"); const EGLint attribs[] = { EGL_SURFACE_TYPE, EGL_WINDOW_BIT, EGL_BLUE_SIZE, 8, EGL_GREEN_SIZE, 8, EGL_RED_SIZE, 8, EGL_NONE }; EGLint w, h, dummy, format; EGLint numConfigs; EGLConfig config; EGLSurface surface; EGLContext context; EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY); eglInitialize(display, 0, 0); eglChooseConfig(display, attribs, &config, 1, &numConfigs); eglGetConfigAttrib(display, config, EGL_NATIVE_VISUAL_ID, &format); ANativeWindow_setBuffersGeometry(this->app->window, 0, 0, format); surface = eglCreateWindowSurface(display, config, this->app->window, NULL); context = eglCreateContext(display, config, NULL, NULL); if (eglMakeCurrent(display, surface, surface, context) == EGL_FALSE) { LOGW("Unable to eglMakeCurrent"); return; } eglQuerySurface(display, surface, EGL_WIDTH, &w); eglQuerySurface(display, surface, EGL_HEIGHT, &h); this->display = display; this->context = context; this->surface = surface; this->width = w; this->height = h; // Initialize GL state. glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST); glEnable(GL_CULL_FACE); glShadeModel(GL_SMOOTH); glDisable(GL_DEPTH_TEST); this->animating = true; } </code></pre> And here is my render method: <pre><code> void Engine::onRender() { glClearColor(0.7, 0.1, 0.5, 1); glClear(GL_COLOR_BUFFER_BIT); glViewport(0, 0, this->width, this->height); //glMatrixMode(GL_PROJECTION); //glLoadIdentity(); //glFrustumf(-this->width / 2, this->width / 2, -this->height / 2, this->height / 2, 1, 3); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); glTranslatef(0, 0, 0); GLfloat triangle[] = { 0, 0, 0, 0, 100, 0, 100, -100, 0 }; glPushMatrix(); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glTranslatef(0, 0, 0); glColor4f(1.0f, 0.3f, 0.0f, .5f); glEnableClientState(GL_VERTEX_ARRAY); glVertexPointer(3, GL_FLOAT, 0, triangle); glDrawArrays(GL_TRIANGLE_STRIP, 0, 3); glDisableClientState(GL_VERTEX_ARRAY); glPopMatrix(); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); glTranslatef(0, 0, -10); eglSwapBuffers(this->display, this->surface); } </code></pre> Anyone can help? All I can see the pink/purple background but know any other pixel :| No errors in console.
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<android><c++><android-ndk><opengl-es-1.1>
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Android NDK Native Activity OpenGL ES 1.1 triangle won't show up
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