void GlxContextHandler::createContext(const AbstractXApplication::Configuration& configuration, Window nativeWindow) {
window = nativeWindow;
GLint attributes[] = {
/* Leave some space for optional attributes below */
0, 0,
0, 0,
0, 0,
0
};
/* Set context version, if requested */
if(configuration.version() != Version::None) {
Int major, minor;
std::tie(major, minor) = version(configuration.version());
attributes[0] = GLX_CONTEXT_MAJOR_VERSION_ARB;
attributes[1] = major;
attributes[2] = GLX_CONTEXT_MINOR_VERSION_ARB;
attributes[3] = minor;
#ifndef MAGNUM_TARGET_GLES
if(configuration.version() >= Version::GL310) {
attributes[4] = GLX_CONTEXT_PROFILE_MASK_ARB;
attributes[5] = GLX_CONTEXT_CORE_PROFILE_BIT_ARB;
}
#else
attributes[4] = GLX_CONTEXT_PROFILE_MASK_ARB;
attributes[5] = GLX_CONTEXT_ES2_PROFILE_BIT_EXT;
#endif
}
/* We need this to run ES (default is desktop GL) */
#ifdef MAGNUM_TARGET_GLES
else {
attributes[0] = GLX_CONTEXT_MAJOR_VERSION_ARB;
#ifdef MAGNUM_TARGET_GLES3
attributes[1] = 3;
#elif defined(MAGNUM_TARGET_GLES2)
attributes[1] = 2;
#else
#error unsupported OpenGL ES version
#endif
attributes[2] = GLX_CONTEXT_MINOR_VERSION_ARB;
attributes[3] = 0;
attributes[4] = GLX_CONTEXT_PROFILE_MASK_ARB;
attributes[5] = GLX_CONTEXT_ES2_PROFILE_BIT_EXT;
}
#endif
/** @todo Use some extension wrangler for this, not GLEW, as it apparently needs context to create context, yo dawg wtf. */
PFNGLXCREATECONTEXTATTRIBSARBPROC glXCreateContextAttribsARB = (PFNGLXCREATECONTEXTATTRIBSARBPROC) glXGetProcAddress((const GLubyte*)"glXCreateContextAttribsARB");
context = glXCreateContextAttribsARB(display, configs[0], nullptr, True, attributes);
XFree(configs);
if(!context) {
Error() << "GlxContextHandler: cannot create context.";
std::exit(1);
}
}
void EglContextHandler::createContext(const AbstractXApplication::Configuration& configuration, EGLNativeWindowType window) {
EGLint attributes[] = {
/* Leave some space for optional attributes below */
EGL_NONE, EGL_NONE,
EGL_NONE, EGL_NONE,
EGL_NONE, EGL_NONE,
EGL_NONE
};
/* Set context version, if requested. On desktop needs
EGL_KHR_create_context. */
/** @todo Test for presence of EGL_KHR_create_context extension */
if(configuration.version() != Version::None) {
Int major, minor;
std::tie(major, minor) = version(configuration.version());
attributes[0] = EGL_CONTEXT_MAJOR_VERSION_KHR;
attributes[1] = major;
attributes[2] = EGL_CONTEXT_MINOR_VERSION_KHR;
attributes[3] = minor;
#ifndef MAGNUM_TARGET_GLES
if(configuration.version() >= Version::GL310) {
attributes[4] = EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR;
attributes[5] = EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR;
}
#endif
}
/* We need this to run ES (default is desktop GL) */
#ifdef MAGNUM_TARGET_GLES
else {
attributes[0] = EGL_CONTEXT_CLIENT_VERSION;
#ifdef MAGNUM_TARGET_GLES3
attributes[1] = 3;
#elif defined(MAGNUM_TARGET_GLES2)
attributes[1] = 2;
#else
#error Unsupported OpenGL ES version
#endif
}
#endif
if(!(context = eglCreateContext(display, config, EGL_NO_CONTEXT, attributes))) {
Error() << "Cannot create EGL context:" << Implementation::eglErrorString(eglGetError());
std::exit(1);
}
if(!(surface = eglCreateWindowSurface(display, config, window, nullptr))) {
Error() << "Cannot create window surface:" << Implementation::eglErrorString(eglGetError());
std::exit(1);
}
/** @bug Fixme: On desktop OpenGL and Mesa EGL implementation OpenGL version is 1.0, which is wrong */
}