[英]EGL crashes at first opengl function call
我在帶有最新驅動程序的nvidia 1060 gtx
linux
上使用nvidia 1060 gtx
卡。 但是ELG
根本不起作用,實際上它在第一次調用opengl
函數(例如glGenBuffers()
時崩潰。 使用GLFW
創建上下文時,一切工作正常。 但是這里有必要不依賴x-server
存在。
使用以下代碼編譯了以下代碼: gcc testegl.cpp -lGLEW -lGL -lEGL_nvidia -lEGL -lstdc++ -o testegl
輸出為:
testegl.cpp:
#include <EGL/egl.h>
#include <GL/glew.h>
#include <exception>
#include <string>
#include <iostream>
class GLEGLContext {
private:
EGLDisplay mDisplay;
EGLSurface mSurface;
EGLContext mContext;
public:
GLEGLContext ();
~GLEGLContext ();
GLEGLContext (const GLEGLContext& ) = delete;
GLEGLContext& operator = (const GLEGLContext&) = delete;
public:
virtual void makeCurrent ();
virtual void releaseCurrent ();
};
GLEGLContext::GLEGLContext () {
const EGLint configAttribs[] = {
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_BLUE_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_RED_SIZE, 8,
EGL_DEPTH_SIZE, 0,
EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
EGL_NONE
};
const EGLint pbufferAttribs[] = {
EGL_WIDTH, 1920,
EGL_HEIGHT, 1080,
EGL_NONE,
};
mDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
if (mDisplay == EGL_NO_DISPLAY)
throw StdException(__PRETTY_FUNCTION__, "eglGetDisplay() failed");
EGLint major, minor;
if (!eglInitialize(mDisplay, &major, &minor))
throw StdException(__PRETTY_FUNCTION__, "eglInitialize() failed");
EGLint numConfigs;
EGLConfig eglCfg;
if (!eglChooseConfig(mDisplay, configAttribs, &eglCfg, 1, &numConfigs))
throw StdException(__PRETTY_FUNCTION__, "eglChooseConfig() failed");
mSurface = eglCreatePbufferSurface(mDisplay, eglCfg, pbufferAttribs);
if (mSurface == EGL_NO_SURFACE)
throw StdException(__PRETTY_FUNCTION__, "eglCreatePbufferSurface() failed");
if (!eglBindAPI(EGL_OPENGL_API))
throw StdException(__PRETTY_FUNCTION__, "eglBindAPI() failed");
mContext = eglCreateContext(mDisplay, eglCfg, EGL_NO_CONTEXT, NULL);
if (mContext == EGL_NO_CONTEXT)
throw StdException(__PRETTY_FUNCTION__, "eglCreateContext() failed");
makeCurrent();
}
GLEGLContext::~GLEGLContext () {
eglTerminate(mDisplay);
}
void GLEGLContext::makeCurrent () {
if (!eglMakeCurrent(mDisplay, mSurface, mSurface, mContext))
throw StdException(__PRETTY_FUNCTION__, "eglMakeCurrent() create failed");
}
void GLEGLContext::releaseCurrent () {
if (!eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT))
throw StdException(__PRETTY_FUNCTION__, "eglMakeCurrent() release failed");
}
int main(int argc, char** argv) {
GLEGLContext ctx;
ctx.makeCurrent();
std::cout << "Starting..." << std::endl;
GLuint vertexBuffer = 0;
glGenBuffers(1, &vertexBuffer);
std::cout << "done" << std::endl;
ctx.releaseCurrent();
return 0;
}
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