+/**************************************************************************
+ *
+ * Copyright 2008 VMware, Inc.
+ * Copyright 2009-2010 Chia-I Wu <olvaffe@gmail.com>
+ * Copyright 2010-2011 LunarG, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
/**
* Functions related to EGLDisplay.
*/
#include <assert.h>
#include <stdlib.h>
#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include "c11/threads.h"
+#include "util/macros.h"
+#include "util/u_atomic.h"
+
#include "eglcontext.h"
+#include "eglcurrent.h"
#include "eglsurface.h"
+#include "egldevice.h"
#include "egldisplay.h"
#include "egldriver.h"
#include "eglglobals.h"
-#include "eglmutex.h"
#include "egllog.h"
+#include "eglimage.h"
+#include "eglsync.h"
+
+/* Includes for _eglNativePlatformDetectNativeDisplay */
+#ifdef HAVE_WAYLAND_PLATFORM
+#include <wayland-client.h>
+#endif
+#ifdef HAVE_DRM_PLATFORM
+#include <gbm.h>
+#endif
+
+
+/**
+ * Map build-system platform names to platform types.
+ */
+static const struct {
+ _EGLPlatformType platform;
+ const char *name;
+} egl_platforms[] = {
+ { _EGL_PLATFORM_X11, "x11" },
+ { _EGL_PLATFORM_WAYLAND, "wayland" },
+ { _EGL_PLATFORM_DRM, "drm" },
+ { _EGL_PLATFORM_ANDROID, "android" },
+ { _EGL_PLATFORM_HAIKU, "haiku" },
+ { _EGL_PLATFORM_SURFACELESS, "surfaceless" },
+ { _EGL_PLATFORM_DEVICE, "device" },
+};
+
+
+/**
+ * Return the native platform by parsing EGL_PLATFORM.
+ */
+static _EGLPlatformType
+_eglGetNativePlatformFromEnv(void)
+{
+ _EGLPlatformType plat = _EGL_INVALID_PLATFORM;
+ const char *plat_name;
+ EGLint i;
+
+ static_assert(ARRAY_SIZE(egl_platforms) == _EGL_NUM_PLATFORMS,
+ "Missing platform");
+
+ plat_name = getenv("EGL_PLATFORM");
+ /* try deprecated env variable */
+ if (!plat_name || !plat_name[0])
+ plat_name = getenv("EGL_DISPLAY");
+ if (!plat_name || !plat_name[0])
+ return _EGL_INVALID_PLATFORM;
+
+ for (i = 0; i < ARRAY_SIZE(egl_platforms); i++) {
+ if (strcmp(egl_platforms[i].name, plat_name) == 0) {
+ plat = egl_platforms[i].platform;
+ break;
+ }
+ }
+
+ return plat;
+}
+
+
+/**
+ * Try detecting native platform with the help of native display characteristcs.
+ */
+static _EGLPlatformType
+_eglNativePlatformDetectNativeDisplay(void *nativeDisplay)
+{
+ if (nativeDisplay == EGL_DEFAULT_DISPLAY)
+ return _EGL_INVALID_PLATFORM;
+
+ if (_eglPointerIsDereferencable(nativeDisplay)) {
+ void *first_pointer = *(void **) nativeDisplay;
+
+ (void) first_pointer; /* silence unused var warning */
+
+#ifdef HAVE_WAYLAND_PLATFORM
+ /* wl_display is a wl_proxy, which is a wl_object.
+ * wl_object's first element points to the interfacetype. */
+ if (first_pointer == &wl_display_interface)
+ return _EGL_PLATFORM_WAYLAND;
+#endif
+
+#ifdef HAVE_DRM_PLATFORM
+ /* gbm has a pointer to its constructor as first element. */
+ if (first_pointer == gbm_create_device)
+ return _EGL_PLATFORM_DRM;
+#endif
+
+#ifdef HAVE_X11_PLATFORM
+ /* If not matched to any other platform, fallback to x11. */
+ return _EGL_PLATFORM_X11;
+#endif
+
+#ifdef HAVE_HAIKU_PLATFORM
+ return _EGL_PLATFORM_HAIKU;
+#endif
+ }
+
+ return _EGL_INVALID_PLATFORM;
+}
+
+
+/**
+ * Return the native platform. It is the platform of the EGL native types.
+ */
+_EGLPlatformType
+_eglGetNativePlatform(void *nativeDisplay)
+{
+ static _EGLPlatformType native_platform = _EGL_INVALID_PLATFORM;
+ _EGLPlatformType detected_platform = native_platform;
+
+ if (detected_platform == _EGL_INVALID_PLATFORM) {
+ const char *detection_method;
+
+ detected_platform = _eglGetNativePlatformFromEnv();
+ detection_method = "environment overwrite";
+
+ if (detected_platform == _EGL_INVALID_PLATFORM) {
+ detected_platform = _eglNativePlatformDetectNativeDisplay(nativeDisplay);
+ detection_method = "autodetected";
+ }
+
+ if (detected_platform == _EGL_INVALID_PLATFORM) {
+ detected_platform = _EGL_NATIVE_PLATFORM;
+ detection_method = "build-time configuration";
+ }
+
+ _eglLog(_EGL_DEBUG, "Native platform type: %s (%s)",
+ egl_platforms[detected_platform].name, detection_method);
+
+ p_atomic_cmpxchg(&native_platform, _EGL_INVALID_PLATFORM,
+ detected_platform);
+ }
+
+ return native_platform;
+}
/**
void
_eglFiniDisplay(void)
{
- _EGLDisplay *dpyList, *dpy;
+ _EGLDisplay *dispList, *disp;
/* atexit function is called with global mutex locked */
- dpyList = _eglGlobal.DisplayList;
- while (dpyList) {
+ dispList = _eglGlobal.DisplayList;
+ while (dispList) {
EGLint i;
/* pop list head */
- dpy = dpyList;
- dpyList = dpyList->Next;
+ disp = dispList;
+ dispList = dispList->Next;
for (i = 0; i < _EGL_NUM_RESOURCES; i++) {
- if (dpy->ResourceLists[i]) {
- _eglLog(_EGL_DEBUG, "Display %p is destroyed with resources", dpy);
+ if (disp->ResourceLists[i]) {
+ _eglLog(_EGL_DEBUG, "Display %p is destroyed with resources", disp);
break;
}
}
- free(dpy);
+
+ /* The fcntl() code in _eglGetDeviceDisplay() ensures that valid fd >= 3,
+ * and invalid one is 0.
+ */
+ if (disp->Options.fd)
+ close(disp->Options.fd);
+
+ free(disp->Options.Attribs);
+ free(disp);
}
_eglGlobal.DisplayList = NULL;
}
+static EGLBoolean
+_eglSameAttribs(const EGLAttrib *a, const EGLAttrib *b)
+{
+ size_t na = _eglNumAttribs(a);
+ size_t nb = _eglNumAttribs(b);
+
+ /* different numbers of attributes must be different */
+ if (na != nb)
+ return EGL_FALSE;
+
+ /* both lists NULL are the same */
+ if (!a && !b)
+ return EGL_TRUE;
+
+ /* otherwise, compare the lists */
+ return memcmp(a, b, na * sizeof(a[0])) == 0 ? EGL_TRUE : EGL_FALSE;
+}
/**
* Find the display corresponding to the specified native display, or create a
- * new one.
+ * new one. EGL 1.5 says:
+ *
+ * Multiple calls made to eglGetPlatformDisplay with the same parameters
+ * will return the same EGLDisplay handle.
+ *
+ * We read this extremely strictly, and treat a call with NULL attribs as
+ * different from a call with attribs only equal to { EGL_NONE }. Similarly
+ * we do not sort the attribute list, so even if all attribute _values_ are
+ * identical, different attribute orders will be considered different
+ * parameters.
*/
_EGLDisplay *
-_eglFindDisplay(EGLNativeDisplayType nativeDisplay)
+_eglFindDisplay(_EGLPlatformType plat, void *plat_dpy,
+ const EGLAttrib *attrib_list)
{
- _EGLDisplay *dpy;
+ _EGLDisplay *disp;
+ size_t num_attribs;
- _eglLockMutex(_eglGlobal.Mutex);
+ if (plat == _EGL_INVALID_PLATFORM)
+ return NULL;
+
+ mtx_lock(_eglGlobal.Mutex);
/* search the display list first */
- dpy = _eglGlobal.DisplayList;
- while (dpy) {
- if (dpy->NativeDisplay == nativeDisplay)
+ for (disp = _eglGlobal.DisplayList; disp; disp = disp->Next) {
+ if (disp->Platform == plat && disp->PlatformDisplay == plat_dpy &&
+ _eglSameAttribs(disp->Options.Attribs, attrib_list))
break;
- dpy = dpy->Next;
}
/* create a new display */
- if (!dpy) {
- dpy = (_EGLDisplay *) calloc(1, sizeof(_EGLDisplay));
- if (dpy) {
- _eglInitMutex(&dpy->Mutex);
- dpy->NativeDisplay = nativeDisplay;
-
- /* add to the display list */
- dpy->Next = _eglGlobal.DisplayList;
- _eglGlobal.DisplayList = dpy;
+ if (!disp) {
+ disp = calloc(1, sizeof(_EGLDisplay));
+ if (disp) {
+ mtx_init(&disp->Mutex, mtx_plain);
+ disp->Platform = plat;
+ disp->PlatformDisplay = plat_dpy;
+ num_attribs = _eglNumAttribs(attrib_list);
+ if (num_attribs) {
+ disp->Options.Attribs = calloc(num_attribs, sizeof(EGLAttrib));
+ if (!disp->Options.Attribs) {
+ free(disp);
+ disp = NULL;
+ goto out;
+ }
+ memcpy(disp->Options.Attribs, attrib_list,
+ num_attribs * sizeof(EGLAttrib));
+ }
+ /* add to the display list */
+ disp->Next = _eglGlobal.DisplayList;
+ _eglGlobal.DisplayList = disp;
}
}
- _eglUnlockMutex(_eglGlobal.Mutex);
+out:
+ mtx_unlock(_eglGlobal.Mutex);
- return dpy;
+ return disp;
}
drv->API.DestroySurface(drv, display, surf);
}
assert(!display->ResourceLists[_EGL_RESOURCE_SURFACE]);
+
+ list = display->ResourceLists[_EGL_RESOURCE_IMAGE];
+ while (list) {
+ _EGLImage *image = (_EGLImage *) list;
+ list = list->Next;
+
+ _eglUnlinkImage(image);
+ drv->API.DestroyImageKHR(drv, display, image);
+ }
+ assert(!display->ResourceLists[_EGL_RESOURCE_IMAGE]);
+
+ list = display->ResourceLists[_EGL_RESOURCE_SYNC];
+ while (list) {
+ _EGLSync *sync = (_EGLSync *) list;
+ list = list->Next;
+
+ _eglUnlinkSync(sync);
+ drv->API.DestroySyncKHR(drv, display, sync);
+ }
+ assert(!display->ResourceLists[_EGL_RESOURCE_SYNC]);
}
void
_eglCleanupDisplay(_EGLDisplay *disp)
{
- EGLint i;
-
if (disp->Configs) {
- for (i = 0; i < disp->NumConfigs; i++)
- free(disp->Configs[i]);
- free(disp->Configs);
+ _eglDestroyArray(disp->Configs, free);
disp->Configs = NULL;
- disp->NumConfigs = 0;
- disp->MaxConfigs = 0;
}
/* XXX incomplete */
{
_EGLDisplay *cur;
- _eglLockMutex(_eglGlobal.Mutex);
+ mtx_lock(_eglGlobal.Mutex);
cur = _eglGlobal.DisplayList;
while (cur) {
if (cur == (_EGLDisplay *) dpy)
break;
cur = cur->Next;
}
- _eglUnlockMutex(_eglGlobal.Mutex);
+ mtx_unlock(_eglGlobal.Mutex);
return (cur != NULL);
}
* own the resource.
*/
EGLBoolean
-_eglCheckResource(void *res, _EGLResourceType type, _EGLDisplay *dpy)
+_eglCheckResource(void *res, _EGLResourceType type, _EGLDisplay *disp)
{
- _EGLResource *list = dpy->ResourceLists[type];
+ _EGLResource *list = disp->ResourceLists[type];
if (!res)
return EGL_FALSE;
while (list) {
if (res == (void *) list) {
- assert(list->Display == dpy);
+ assert(list->Display == disp);
break;
}
list = list->Next;
/**
- * Link a resource to a display.
+ * Initialize a display resource. The size of the subclass object is
+ * specified.
+ *
+ * This is supposed to be called from the initializers of subclasses, such as
+ * _eglInitContext or _eglInitSurface.
*/
void
-_eglLinkResource(_EGLResource *res, _EGLResourceType type, _EGLDisplay *dpy)
+_eglInitResource(_EGLResource *res, EGLint size, _EGLDisplay *disp)
{
- assert(!res->Display || res->Display == dpy);
+ memset(res, 0, size);
+ res->Display = disp;
+ res->RefCount = 1;
+}
+
+
+/**
+ * Increment reference count for the resource.
+ */
+void
+_eglGetResource(_EGLResource *res)
+{
+ assert(res && res->RefCount > 0);
+ /* hopefully a resource is always manipulated with its display locked */
+ res->RefCount++;
+}
+
+
+/**
+ * Decrement reference count for the resource.
+ */
+EGLBoolean
+_eglPutResource(_EGLResource *res)
+{
+ assert(res && res->RefCount > 0);
+ res->RefCount--;
+ return (!res->RefCount);
+}
+
+
+/**
+ * Link a resource to its display.
+ */
+void
+_eglLinkResource(_EGLResource *res, _EGLResourceType type)
+{
+ assert(res->Display);
- res->Display = dpy;
res->IsLinked = EGL_TRUE;
- res->Next = dpy->ResourceLists[type];
- dpy->ResourceLists[type] = res;
+ res->Next = res->Display->ResourceLists[type];
+ res->Display->ResourceLists[type] = res;
+ _eglGetResource(res);
}
}
res->Next = NULL;
- /* do not reset res->Display */
res->IsLinked = EGL_FALSE;
+ _eglPutResource(res);
+
+ /* We always unlink before destroy. The driver still owns a reference */
+ assert(res->RefCount);
+}
+
+#ifdef HAVE_X11_PLATFORM
+_EGLDisplay*
+_eglGetX11Display(Display *native_display,
+ const EGLAttrib *attrib_list)
+{
+ /* EGL_EXT_platform_x11 recognizes exactly one attribute,
+ * EGL_PLATFORM_X11_SCREEN_EXT, which is optional.
+ */
+ if (attrib_list != NULL) {
+ for (int i = 0; attrib_list[i] != EGL_NONE; i += 2) {
+ if (attrib_list[i] != EGL_PLATFORM_X11_SCREEN_EXT) {
+ _eglError(EGL_BAD_ATTRIBUTE, "eglGetPlatformDisplay");
+ return NULL;
+ }
+ }
+ }
+ return _eglFindDisplay(_EGL_PLATFORM_X11, native_display, attrib_list);
+}
+#endif /* HAVE_X11_PLATFORM */
+
+#ifdef HAVE_DRM_PLATFORM
+_EGLDisplay*
+_eglGetGbmDisplay(struct gbm_device *native_display,
+ const EGLAttrib *attrib_list)
+{
+ /* EGL_MESA_platform_gbm recognizes no attributes. */
+ if (attrib_list != NULL && attrib_list[0] != EGL_NONE) {
+ _eglError(EGL_BAD_ATTRIBUTE, "eglGetPlatformDisplay");
+ return NULL;
+ }
+
+ return _eglFindDisplay(_EGL_PLATFORM_DRM, native_display, attrib_list);
+}
+#endif /* HAVE_DRM_PLATFORM */
+
+#ifdef HAVE_WAYLAND_PLATFORM
+_EGLDisplay*
+_eglGetWaylandDisplay(struct wl_display *native_display,
+ const EGLAttrib *attrib_list)
+{
+ /* EGL_EXT_platform_wayland recognizes no attributes. */
+ if (attrib_list != NULL && attrib_list[0] != EGL_NONE) {
+ _eglError(EGL_BAD_ATTRIBUTE, "eglGetPlatformDisplay");
+ return NULL;
+ }
+
+ return _eglFindDisplay(_EGL_PLATFORM_WAYLAND, native_display, attrib_list);
+}
+#endif /* HAVE_WAYLAND_PLATFORM */
+
+#ifdef HAVE_SURFACELESS_PLATFORM
+_EGLDisplay*
+_eglGetSurfacelessDisplay(void *native_display,
+ const EGLAttrib *attrib_list)
+{
+ /* This platform has no native display. */
+ if (native_display != NULL) {
+ _eglError(EGL_BAD_PARAMETER, "eglGetPlatformDisplay");
+ return NULL;
+ }
+
+ /* This platform recognizes no display attributes. */
+ if (attrib_list != NULL && attrib_list[0] != EGL_NONE) {
+ _eglError(EGL_BAD_ATTRIBUTE, "eglGetPlatformDisplay");
+ return NULL;
+ }
+
+ return _eglFindDisplay(_EGL_PLATFORM_SURFACELESS, native_display,
+ attrib_list);
+}
+#endif /* HAVE_SURFACELESS_PLATFORM */
+
+#ifdef HAVE_ANDROID_PLATFORM
+_EGLDisplay*
+_eglGetAndroidDisplay(void *native_display,
+ const EGLAttrib *attrib_list)
+{
+
+ /* This platform recognizes no display attributes. */
+ if (attrib_list != NULL && attrib_list[0] != EGL_NONE) {
+ _eglError(EGL_BAD_ATTRIBUTE, "eglGetPlatformDisplay");
+ return NULL;
+ }
+
+ return _eglFindDisplay(_EGL_PLATFORM_ANDROID, native_display,
+ attrib_list);
+}
+#endif /* HAVE_ANDROID_PLATFORM */
+
+_EGLDisplay*
+_eglGetDeviceDisplay(void *native_display,
+ const EGLAttrib *attrib_list)
+{
+ _EGLDevice *dev;
+ _EGLDisplay *display;
+ int fd = -1;
+
+ dev = _eglLookupDevice(native_display);
+ if (!dev) {
+ _eglError(EGL_BAD_PARAMETER, "eglGetPlatformDisplay");
+ return NULL;
+ }
+
+ if (attrib_list) {
+ for (int i = 0; attrib_list[i] != EGL_NONE; i += 2) {
+ EGLAttrib attrib = attrib_list[i];
+ EGLAttrib value = attrib_list[i + 1];
+
+ /* EGL_EXT_platform_device does not recognize any attributes,
+ * EGL_EXT_device_drm adds the optional EGL_DRM_MASTER_FD_EXT.
+ */
+
+ if (!_eglDeviceSupports(dev, _EGL_DEVICE_DRM) ||
+ attrib != EGL_DRM_MASTER_FD_EXT) {
+ _eglError(EGL_BAD_ATTRIBUTE, "eglGetPlatformDisplay");
+ return NULL;
+ }
+
+ fd = (int) value;
+ }
+ }
+
+ display = _eglFindDisplay(_EGL_PLATFORM_DEVICE, native_display, attrib_list);
+ if (!display) {
+ _eglError(EGL_BAD_ALLOC, "eglGetPlatformDisplay");
+ return NULL;
+ }
+
+ /* If the fd is explicitly provided and we did not dup() it yet, do so.
+ * The spec mandates that we do so, since we'll need it past the
+ * eglGetPlatformDispay call.
+ *
+ * The new fd is guaranteed to be 3 or greater.
+ */
+ if (fd != -1 && display->Options.fd == 0) {
+ display->Options.fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
+ if (display->Options.fd == -1) {
+ /* Do not (really) need to teardown the display */
+ _eglError(EGL_BAD_ALLOC, "eglGetPlatformDisplay");
+ return NULL;
+ }
+ }
+
+ return display;
}
projects / mesa.git / blobdiff