我正在创建游戏引擎。在Windows上,我有两个线程,共享两个上下文(使用wglShareLists)。它工作正常。当一个线程加载资源时,其他线程正在渲染简单的加载屏幕 在Linux上没有WGL,只有glX。我不知道如何正确使用它。目前我的线程代码如下所示:
LinuxThread::LinuxThread() :
handle_(0),
running_(false),
task_(0),
useGraphicsContext_(0),
threadContext_(0),
threadDrawable_(0),
dsp_(0)
{
}
LinuxThread::~LinuxThread() {
finishTask();
running_ = false;
glXDestroyContext(dsp_, threadContext_);
}
ULONG LinuxThread::getId() {
return static_cast<ULONG>(handle_);
}
void LinuxThread::start() {
running_ = true;
pthread_create(&handle_, 0, &LinuxThread::staticRun, (void*) this);
}
bool LinuxThread::isRunning() {
return running_;
}
void LinuxThread::setGraphicsContext(bool state) {
if (state) {
Display* dsp = XOpenDisplay(0);
threadDrawable_ = glXGetCurrentDrawable();
GLint att[] = { GLX_RGBA, None };
XVisualInfo* vi = glXChooseVisual(dsp, 0, att);
GLXContext glc = glXGetCurrentContext();
bool directlyToScreen = true; // False for x-server display.
threadContext_ = glXCreateContext(dsp, vi, glc, directlyToScreen);
}
useGraphicsContext_ = state;
}
void LinuxThread::setTask(Task* task) {
// if (useGraphicsContext_) {
// task->run();
// delete task;
// return;
// }
finishTask();
task_ = task;
}
bool LinuxThread::hasTask() {
return task_ != 0;
}
void LinuxThread::finishTask() {
while (task_ != 0) {
usleep(1000);
}
}
void LinuxThread::stop() {
running_ = false;
}
void* LinuxThread::staticRun(void* thread) {
return (void*) ((LinuxThread*) thread)->run();
}
int LinuxThread::run() {
while (running_) {
usleep(10000);
if (task_ != 0) {
if (useGraphicsContext_) {
glXMakeCurrent(dsp_, threadDrawable_, threadContext_);
}
task_->run();
if (useGraphicsContext_) {
glFinish();
glXMakeCurrent(dsp_, 0, 0);
}
delete task_;
task_ = 0;
}
}
return 1;
}
崩溃时出现如下错误消息:
nouveau: kernel rejected pushbuf: No such file or directory
nouveau: ch6: krec 0 pushes 1 bufs 14 relocs 0
nouveau: ch6: buf 00000000 00000002 00000006 00000006 00000000
nouveau: ch6: buf 00000001 00000010 00000002 00000002 00000000
nouveau: ch6: buf 00000002 0000000f 00000002 00000002 00000002
nouveau: ch6: buf 00000003 0000000e 00000002 00000000 00000002
nouveau: ch6: buf 00000004 00000007 00000002 00000002 00000002
nouveau: ch6: buf 00000005 0000000a 00000002 00000002 00000000
nouveau: ch6: buf 00000006 0000000b 00000002 00000002 00000000
我做错了什么?
答案 0 :(得分:1)
我看不到具体的问题来源,但是线程代码使事情复杂化了很多。在你的鞋子里我会:
LIBGL_ALWAYS_SOFTWARE=y
,以确保您没有在新手驱动程序中遇到问题。 (这将使用内部Mesa Software渲染器。)