/*
* Exported function for obtaining a driver's option list (UTF-8 encoded XML).
*
* The returned char pointer points directly into the driver. Therefore
* it should be treated as a constant.
*
* If the driver was not found or does not support configuration NULL is
* returned.
*
* Note: The driver remains opened after this function returns.
*/
PUBLIC const char *glXGetDriverConfig (const char *driverName)
{
void *handle = driOpenDriver (driverName);
if (handle)
return dlsym (handle, "__driConfigOptions");
else
return NULL;
}
/*
* Exported function for obtaining a driver's option list (UTF-8 encoded XML).
*
* The returned char pointer points directly into the driver. Therefore
* it should be treated as a constant.
*
* If the driver was not found or does not support configuration NULL is
* returned.
*
* Note: The driver remains opened after this function returns.
*/
_X_EXPORT const char *
glXGetDriverConfig(const char *driverName)
{
void *handle = driOpenDriver(driverName);
const __DRIextension **extensions;
if (!handle)
return NULL;
extensions = driGetDriverExtensions(handle, driverName);
if (extensions) {
for (int i = 0; extensions[i]; i++) {
if (strcmp(extensions[i]->name, __DRI_CONFIG_OPTIONS) == 0)
return ((__DRIconfigOptionsExtension *)extensions[i])->xml;
}
}
/* Fall back to the old method */
return dlsym(handle, "__driConfigOptions");
}
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;
if (!DRI2Connect(psc->dpy, RootWindow(psc->dpy, screen),
&driverName, &deviceName)) {
XFree(psp);
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));
goto handle_error;
}
if (drmGetMagic(psc->fd, &magic)) {
ErrorMessageF("failed to get magic\n");
goto handle_error;
}
if (!DRI2Authenticate(psc->dpy, RootWindow(psc->dpy, screen), magic)) {
ErrorMessageF("failed to authenticate magic %d\n", magic);
goto handle_error;
}
/* 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");
goto handle_error;
}
driBindCommonExtensions(psc);
dri2BindExtensions(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 = dri2DestroyScreen;
psp->createContext = dri2CreateContext;
psp->createDrawable = dri2CreateDrawable;
psp->swapBuffers = dri2SwapBuffers;
psp->waitGL = dri2WaitGL;
psp->waitX = dri2WaitX;
psp->getDrawableMSC = NULL;
psp->waitForMSC = NULL;
psp->waitForSBC = NULL;
psp->setSwapInterval = NULL;
psp->getSwapInterval = NULL;
if (pdp->driMinor >= 2) {
#ifdef X_DRI2GetMSC
psp->getDrawableMSC = dri2DrawableGetMSC;
#endif
#ifdef X_DRI2WaitMSC
psp->waitForMSC = dri2WaitForMSC;
psp->waitForSBC = dri2WaitForSBC;
#endif
#ifdef X_DRI2SwapInterval
psp->setSwapInterval = dri2SetSwapInterval;
psp->getSwapInterval = dri2GetSwapInterval;
#endif
#if defined(X_DRI2GetMSC) && defined(X_DRI2WaitMSC) && defined(X_DRI2SwapInterval)
__glXEnableDirectExtension(psc, "GLX_OML_sync_control");
#endif
}
/* 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);
XFree(psp);
/* FIXME: clean up here */
return NULL;
}
