static __GLXDRIscreen *
driCreateScreen(__GLXscreenConfigs * psc, int screen,
__GLXdisplayPrivate * priv)
{
__GLXDRIscreen *psp;
const __DRIconfig **driver_configs;
const __DRIextension **extensions;
const char *driverName = "swrast";
int i;
psp = Xcalloc(1, sizeof *psp);
if (psp == NULL)
return NULL;
psc->driver = driOpenDriver(driverName);
if (psc->driver == NULL)
goto handle_error;
extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS);
if (extensions == NULL) {
ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
goto handle_error;
}
for (i = 0; extensions[i]; i++) {
if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
psc->core = (__DRIcoreExtension *) extensions[i];
if (strcmp(extensions[i]->name, __DRI_SWRAST) == 0)
psc->swrast = (__DRIswrastExtension *) extensions[i];
}
if (psc->core == NULL || psc->swrast == NULL) {
ErrorMessageF("core dri extension not found\n");
goto handle_error;
}
psc->__driScreen =
psc->swrast->createNewScreen(screen,
loader_extensions, &driver_configs, psc);
if (psc->__driScreen == NULL) {
ErrorMessageF("failed to create dri screen\n");
goto handle_error;
}
driBindExtensions(psc);
driBindCommonExtensions(psc);
psc->configs = driConvertConfigs(psc->core, psc->configs, driver_configs);
psc->visuals = driConvertConfigs(psc->core, psc->visuals, driver_configs);
psc->driver_configs = driver_configs;
psp->destroyScreen = driDestroyScreen;
psp->createContext = driCreateContext;
psp->createDrawable = driCreateDrawable;
psp->swapBuffers = driSwapBuffers;
psp->waitX = NULL;
psp->waitGL = NULL;
return psp;
handle_error:
Xfree(psp);
if (psc->driver)
dlclose(psc->driver);
ErrorMessageF("reverting to indirect rendering\n");
return NULL;
}
static __GLXDRIscreen *dri2CreateScreen(__GLXscreenConfigs *psc, int screen,
__GLXdisplayPrivate *priv)
{
const __DRIconfig **driver_configs;
const __DRIextension **extensions;
const __GLXDRIdisplayPrivate *const pdp = (__GLXDRIdisplayPrivate *)
priv->dri2Display;
__GLXDRIscreen *psp;
char *driverName, *deviceName;
drm_magic_t magic;
int i;
psp = Xmalloc(sizeof *psp);
if (psp == NULL)
return NULL;
/* Initialize per screen dynamic client GLX extensions */
psc->ext_list_first_time = GL_TRUE;
if (!DRI2Connect(psc->dpy, RootWindow(psc->dpy, screen),
&driverName, &deviceName))
return NULL;
psc->driver = driOpenDriver(driverName);
if (psc->driver == NULL) {
ErrorMessageF("driver pointer missing\n");
goto handle_error;
}
extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS);
if (extensions == NULL) {
ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
goto handle_error;
}
for (i = 0; extensions[i]; i++) {
if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
psc->core = (__DRIcoreExtension *) extensions[i];
if (strcmp(extensions[i]->name, __DRI_DRI2) == 0)
psc->dri2 = (__DRIdri2Extension *) extensions[i];
}
if (psc->core == NULL || psc->dri2 == NULL) {
ErrorMessageF("core dri or dri2 extension not found\n");
goto handle_error;
}
psc->fd = open(deviceName, O_RDWR);
if (psc->fd < 0) {
ErrorMessageF("failed to open drm device: %s\n", strerror(errno));
return NULL;
}
if (drmGetMagic(psc->fd, &magic)) {
ErrorMessageF("failed to get magic\n");
return NULL;
}
if (!DRI2Authenticate(psc->dpy, RootWindow(psc->dpy, screen), magic)) {
ErrorMessageF("failed to authenticate magic %d\n", magic);
return NULL;
}
/* If the server does not support the protocol for
* DRI2GetBuffersWithFormat, don't supply that interface to the driver.
*/
psc->__driScreen =
psc->dri2->createNewScreen(screen, psc->fd,
((pdp->driMinor < 1)
? loader_extensions_old
: loader_extensions),
&driver_configs, psc);
if (psc->__driScreen == NULL) {
ErrorMessageF("failed to create dri screen\n");
return NULL;
}
driBindExtensions(psc, 1);
psc->configs = driConvertConfigs(psc->core, psc->configs, driver_configs);
psc->visuals = driConvertConfigs(psc->core, psc->visuals, driver_configs);
psc->driver_configs = driver_configs;
psp->destroyScreen = dri2DestroyScreen;
psp->createContext = dri2CreateContext;
psp->createDrawable = dri2CreateDrawable;
psp->swapBuffers = dri2SwapBuffers;
psp->waitGL = dri2WaitGL;
psp->waitX = dri2WaitX;
/* DRI2 suports SubBuffer through DRI2CopyRegion, so it's always
* available.*/
psp->copySubBuffer = dri2CopySubBuffer;
__glXEnableDirectExtension(psc, "GLX_MESA_copy_sub_buffer");
Xfree(driverName);
Xfree(deviceName);
return psp;
handle_error:
Xfree(driverName);
Xfree(deviceName);
/* FIXME: clean up here */
return NULL;
}