为什么eglMakeCurrent在EGL_BAD_ALLOC上失败了
Why is eglMakeCurrent failing with EGL_BAD_ALLOC?
我正在使用OpenGL ES 2.0和Android NDK r8b。我有一个用于工作线程的共享上下文。当我尝试使用 eglMakeCurrent 将共享上下文绑定到工作线程时,我收到错误EGL_BAD_ALLOC。
现在让我感到困惑的是,这段代码以前运行良好......我不确定我做了什么来破坏它。EGL 文档说此错误与资源不可用有关,但我正在运行相同的应用程序,该应用程序曾经在完全相同的设备上完美运行,并且所有纹理都从主线程加载良好。
那么是什么导致了这个错误呢?
这是我的 egl 初始化:
bool Initialize(void *displaySurface)
{
assert(displaySurface);
ANativeWindow *window = (ANativeWindow*)displaySurface;
EGLint dummy, format;
display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
eglInitialize(display, 0, 0);
const EGLint configAttribs[] =
{
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_BLUE_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_RED_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_BUFFER_SIZE, 32,
EGL_DEPTH_SIZE, 24,
EGL_NONE
};
const EGLint auxConfigAttribs[] =
{
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_BLUE_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_RED_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_BUFFER_SIZE, 32,
EGL_DEPTH_SIZE, 24,
EGL_NONE
};
EGLint contextAttribs[] =
{
EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE
};
EGLint numConfigs;
EGLConfig config;
//// create main context
eglChooseConfig(display, configAttribs, &config, 1, &numConfigs);
Trace("eglChooseConfig: " + GetEglError());
eglGetConfigAttrib(display, config, EGL_NATIVE_VISUAL_ID, &format);
Trace("eglGetConfigAttrib: " + GetEglError());
ANativeWindow_setBuffersGeometry(window, 0, 0, format);
Trace("ANativeWindow_setBuffersGeometry: " + GetEglError());
surface = eglCreateWindowSurface(display, config, window, NULL);
Trace("eglCreateWindowSurface: " + GetEglError());
context = eglCreateContext(display, config, EGL_NO_CONTEXT, contextAttribs);
Trace("eglCreateContext: " + GetEglError());
//// create auxiliary context
eglChooseConfig(display, auxConfigAttribs, &config, 1, &numConfigs);
Trace("AUX eglChooseConfig: " + GetEglError());
auxSurface = eglCreatePbufferSurface(display, config, NULL);
Trace("AUX eglCreatePbufferSurface: " + GetEglError());
auxContext = eglCreateContext(display, config, context, contextAttribs);
Trace("AUX eglCreateContext: " + GetEglError());
//// make main context current
eglMakeCurrent(display, surface, surface, context);
Trace("eglMakeCurrent: " + GetError());
eglQuerySurface(display, surface, EGL_WIDTH, &width);
eglQuerySurface(display, surface, EGL_HEIGHT, &height);
SetViewport(width, height);
EnableDepthBuffer(enableDepthTest);
EnableBackfaceCulling(enableBackfaceCull);
SetBackgroundColor(backgroundColor);
glDisable(GL_DITHER);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
Trace("finished" + GetEglError());
alive = true;
return true;
}
编辑:我可能是错的,但此错误似乎出现在 ndk 工具链更新的同时......但我无法测试这个理论,因为我不再有任何较旧的 ndk 副本了。因此,如果有人有指向我可以在哪里获得 NDK 7c 的链接,那也会有所帮助。
好吧,似乎问题在于 PBuffer 需要至少为 1x1 像素才能工作,而 EGL_WIDTH 和 EGL_HEIGHT 的默认值为 0。
获奖配置:
bool Initialize(void *displaySurface)
{
assert(displaySurface);
ANativeWindow *window = (ANativeWindow*)displaySurface;
EGLint dummy, format;
display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
eglInitialize(display, 0, 0);
EGLint contextAttribs[] =
{
EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE
};
//// create main context
const EGLint configAttribs[] =
{
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_BLUE_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_RED_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_BUFFER_SIZE, 32,
EGL_DEPTH_SIZE, 24,
EGL_NONE
};
EGLint numConfigs;
EGLConfig config;
eglChooseConfig(display, configAttribs, &config, 1, &numConfigs);
Trace("eglChooseConfig: " + GetEglError());
eglGetConfigAttrib(display, config, EGL_NATIVE_VISUAL_ID, &format);
Trace("eglGetConfigAttrib: " + GetEglError());
ANativeWindow_setBuffersGeometry(window, 0, 0, format);
Trace("ANativeWindow_setBuffersGeometry: " + GetEglError());
surface = eglCreateWindowSurface(display, config, window, NULL);
Trace("eglCreateWindowSurface: " + GetEglError());
context = eglCreateContext(display, config, EGL_NO_CONTEXT, contextAttribs);
Trace("eglCreateContext: " + GetEglError());
//// create auxiliary context
const EGLint auxConfigAttribs[] =
{
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_BLUE_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_RED_SIZE, 8,
EGL_ALPHA_SIZE, 0,
EGL_DEPTH_SIZE, 0,
EGL_STENCIL_SIZE, 0,
EGL_NONE
};
EGLint pbufferAttribs[] =
{
EGL_WIDTH, 1,
EGL_HEIGHT, 1,
EGL_TEXTURE_TARGET, EGL_NO_TEXTURE,
EGL_TEXTURE_FORMAT, EGL_NO_TEXTURE,
EGL_NONE
};
EGLint auxNumConfigs;
EGLConfig auxConfig;
eglChooseConfig(display, auxConfigAttribs, &auxConfig, 1, &auxNumConfigs);
Trace("AUX eglChooseConfig: " + GetEglError());
auxSurface = eglCreatePbufferSurface(display, auxConfig, pbufferAttribs);
Trace("AUX eglCreatePbufferSurface: " + GetEglError());
auxContext = eglCreateContext(display, auxConfig, context, contextAttribs);
Trace("AUX eglCreateContext: " + GetEglError());
//// make main context current
eglMakeCurrent(display, surface, surface, context);
Trace("eglMakeCurrent main: " + GetError());
eglQuerySurface(display, surface, EGL_WIDTH, &width);
eglQuerySurface(display, surface, EGL_HEIGHT, &height);
SetViewport(width, height);
EnableDepthBuffer(enableDepthTest);
EnableBackfaceCulling(enableBackfaceCull);
SetBackgroundColor(backgroundColor);
glDisable(GL_DITHER);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
Trace("finished" + GetEglError());
alive = true;
return true;
}
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