[Mesa-dev] [RFC 03/12] egl: add EGL_ANDROID_native_fence_sync

Chad Versace chadversary at chromium.org
Mon Oct 10 17:43:50 UTC 2016


From: Rob Clark <robclark at freedesktop.org>

[chadv]: Resolve rebase conflicts.

Signed-off-by: Rob Clark <robclark at freedesktop.org>
---
 src/egl/drivers/dri2/egl_dri2.c | 49 +++++++++++++++++++++++++++++++++++++++++
 src/egl/main/eglapi.c           | 36 +++++++++++++++++++++++++++---
 src/egl/main/eglapi.h           |  2 ++
 src/egl/main/egldisplay.h       |  1 +
 src/egl/main/eglfallbacks.c     |  1 +
 src/egl/main/eglsync.c          | 37 +++++++++++++++++++------------
 src/egl/main/eglsync.h          |  1 +
 7 files changed, 110 insertions(+), 17 deletions(-)

diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
index cd0a2e9..0c15c85 100644
--- a/src/egl/drivers/dri2/egl_dri2.c
+++ b/src/egl/drivers/dri2/egl_dri2.c
@@ -633,6 +633,12 @@ dri2_setup_screen(_EGLDisplay *disp)
       disp->Extensions.KHR_wait_sync = EGL_TRUE;
       if (dri2_dpy->fence->get_fence_from_cl_event)
          disp->Extensions.KHR_cl_event2 = EGL_TRUE;
+      if (dri2_dpy->fence->base.version >= 2) {
+         unsigned capabilities =
+            dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen);
+         disp->Extensions.ANDROID_native_fence_sync =
+            (capabilities & __DRI_FENCE_CAP_NATIVE_FD) != 0;
+      }
    }
 
    disp->Extensions.KHR_reusable_sync = EGL_TRUE;
@@ -2589,6 +2595,19 @@ dri2_create_sync(_EGLDriver *drv, _EGLDisplay *dpy,
       /* initial status of reusable sync must be "unsignaled" */
       dri2_sync->base.SyncStatus = EGL_UNSIGNALED_KHR;
       break;
+
+   case EGL_SYNC_NATIVE_FENCE_ANDROID:
+      if (dri2_dpy->fence->create_fence_fd) {
+         dri2_sync->fence = dri2_dpy->fence->create_fence_fd(
+                                    dri2_ctx->dri_context,
+                                    dri2_sync->base.SyncFd);
+      }
+      if (!dri2_sync->fence) {
+         _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
+         free(dri2_sync);
+         return NULL;
+      }
+      break;
    }
 
    p_atomic_set(&dri2_sync->refcount, 1);
@@ -2618,12 +2637,41 @@ dri2_destroy_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
          ret = EGL_FALSE;
       }
    }
+
+   if (sync->SyncFd != EGL_NO_NATIVE_FENCE_FD_ANDROID)
+      close(sync->SyncFd);
+
    dri2_egl_unref_sync(dri2_dpy, dri2_sync);
 
    return ret;
 }
 
 static EGLint
+dri2_dup_native_fence_fd(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync)
+{
+   struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy);
+   struct dri2_egl_sync *dri2_sync = dri2_egl_sync(sync);
+
+   assert(sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID);
+
+   if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
+      /* try to retrieve the actual native fence fd.. if rendering is
+       * not flushed this will just return -1, aka NO_NATIVE_FENCE_FD:
+       */
+      sync->SyncFd = dri2_dpy->fence->get_fence_fd(dri2_dpy->dri_screen,
+                                                   dri2_sync->fence);
+   }
+
+   if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
+      /* if native fence fd still not created, return an error: */
+      _eglError(EGL_BAD_PARAMETER, "eglDupNativeFenceFDANDROID");
+      return EGL_NO_NATIVE_FENCE_FD_ANDROID;
+   }
+
+   return dup(sync->SyncFd);
+}
+
+static EGLint
 dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
                       EGLint flags, EGLTime timeout)
 {
@@ -2900,6 +2948,7 @@ _eglBuiltInDriverDRI2(const char *args)
    dri2_drv->base.API.SignalSyncKHR = dri2_signal_sync;
    dri2_drv->base.API.WaitSyncKHR = dri2_server_wait_sync;
    dri2_drv->base.API.DestroySyncKHR = dri2_destroy_sync;
+   dri2_drv->base.API.DupNativeFenceFDANDROID = dri2_dup_native_fence_fd;
    dri2_drv->base.API.GLInteropQueryDeviceInfo = dri2_interop_query_device_info;
    dri2_drv->base.API.GLInteropExportObject = dri2_interop_export_object;
 
diff --git a/src/egl/main/eglapi.c b/src/egl/main/eglapi.c
index 18071d7..3c0b017 100644
--- a/src/egl/main/eglapi.c
+++ b/src/egl/main/eglapi.c
@@ -469,6 +469,7 @@ _eglCreateExtensionsString(_EGLDisplay *dpy)
    /* Please keep these sorted alphabetically. */
    _EGL_CHECK_EXTENSION(ANDROID_framebuffer_target);
    _EGL_CHECK_EXTENSION(ANDROID_image_native_buffer);
+   _EGL_CHECK_EXTENSION(ANDROID_native_fence_sync);
    _EGL_CHECK_EXTENSION(ANDROID_recordable);
 
    _EGL_CHECK_EXTENSION(CHROMIUM_sync_control);
@@ -1562,6 +1563,10 @@ _eglCreateSync(_EGLDisplay *disp, EGLenum type, const EGLAttrib *attrib_list,
       if (!disp->Extensions.KHR_cl_event2)
          RETURN_EGL_ERROR(disp, invalid_type_error, EGL_NO_SYNC_KHR);
       break;
+   case EGL_SYNC_NATIVE_FENCE_ANDROID:
+      if (!disp->Extensions.ANDROID_native_fence_sync)
+         RETURN_EGL_ERROR(disp, invalid_type_error, EGL_NO_SYNC_KHR);
+      break;
    default:
       RETURN_EGL_ERROR(disp, invalid_type_error, EGL_NO_SYNC_KHR);
    }
@@ -1634,7 +1639,8 @@ eglDestroySync(EGLDisplay dpy, EGLSync sync)
 
    _EGL_CHECK_SYNC(disp, s, EGL_FALSE, drv);
    assert(disp->Extensions.KHR_reusable_sync ||
-          disp->Extensions.KHR_fence_sync);
+          disp->Extensions.KHR_fence_sync ||
+          disp->Extensions.ANDROID_native_fence_sync);
 
    _eglUnlinkSync(s);
    ret = drv->API.DestroySyncKHR(drv, disp, s);
@@ -1655,7 +1661,8 @@ eglClientWaitSync(EGLDisplay dpy, EGLSync sync, EGLint flags, EGLTime timeout)
 
    _EGL_CHECK_SYNC(disp, s, EGL_FALSE, drv);
    assert(disp->Extensions.KHR_reusable_sync ||
-          disp->Extensions.KHR_fence_sync);
+          disp->Extensions.KHR_fence_sync ||
+          disp->Extensions.ANDROID_native_fence_sync);
 
    if (s->SyncStatus == EGL_SIGNALED_KHR)
       RETURN_EGL_EVAL(disp, EGL_CONDITION_SATISFIED_KHR);
@@ -1754,7 +1761,8 @@ _eglGetSyncAttribCommon(_EGLDisplay *disp, _EGLSync *s, EGLint attribute, EGLAtt
 
    _EGL_CHECK_SYNC(disp, s, EGL_FALSE, drv);
    assert(disp->Extensions.KHR_reusable_sync ||
-          disp->Extensions.KHR_fence_sync);
+          disp->Extensions.KHR_fence_sync ||
+          disp->Extensions.ANDROID_native_fence_sync);
    ret = drv->API.GetSyncAttrib(drv, disp, s, attribute, value);
 
    RETURN_EGL_EVAL(disp, ret);
@@ -1797,6 +1805,27 @@ eglGetSyncAttribKHR(EGLDisplay dpy, EGLSync sync, EGLint attribute, EGLint *valu
    return result;
 }
 
+static EGLint EGLAPIENTRY
+eglDupNativeFenceFDANDROID(EGLDisplay dpy, EGLSync sync)
+{
+   _EGLDisplay *disp = _eglLockDisplay(dpy);
+   _EGLSync *s = _eglLookupSync(sync, disp);
+   _EGLDriver *drv;
+   EGLBoolean ret;
+
+   /* the spec doesn't seem to specify what happens if the fence
+    * type is not EGL_SYNC_NATIVE_FENCE_ANDROID, but this seems
+    * sensible:
+    */
+   if (s->Type != EGL_SYNC_NATIVE_FENCE_ANDROID)
+      RETURN_EGL_ERROR(disp, EGL_BAD_PARAMETER, EGL_NO_NATIVE_FENCE_FD_ANDROID);
+
+   _EGL_CHECK_SYNC(disp, s, EGL_NO_NATIVE_FENCE_FD_ANDROID, drv);
+   assert(disp->Extensions.ANDROID_native_fence_sync);
+   ret = drv->API.DupNativeFenceFDANDROID(drv, disp, s);
+
+   RETURN_EGL_EVAL(disp, ret);
+}
 
 static EGLBoolean EGLAPIENTRY
 eglSwapBuffersRegionNOK(EGLDisplay dpy, EGLSurface surface,
@@ -2271,6 +2300,7 @@ eglGetProcAddress(const char *procname)
       { "eglLabelObjectKHR", (_EGLProc) eglLabelObjectKHR },
       { "eglDebugMessageControlKHR", (_EGLProc) eglDebugMessageControlKHR },
       { "eglQueryDebugKHR", (_EGLProc) eglQueryDebugKHR },
+      { "eglDupNativeFenceFDANDROID", (_EGLProc) eglDupNativeFenceFDANDROID },
       { NULL, NULL }
    };
    EGLint i;
diff --git a/src/egl/main/eglapi.h b/src/egl/main/eglapi.h
index b9bcc8e..2dc89fc 100644
--- a/src/egl/main/eglapi.h
+++ b/src/egl/main/eglapi.h
@@ -146,6 +146,8 @@ struct _egl_api
    EGLBoolean (*GetSyncAttrib)(_EGLDriver *drv, _EGLDisplay *dpy,
                                _EGLSync *sync, EGLint attribute,
                                EGLAttrib *value);
+   EGLint (*DupNativeFenceFDANDROID)(_EGLDriver *drv, _EGLDisplay *dpy,
+                                     _EGLSync *sync);
 
    EGLBoolean (*SwapBuffersRegionNOK)(_EGLDriver *drv, _EGLDisplay *disp,
                                       _EGLSurface *surf, EGLint numRects,
diff --git a/src/egl/main/egldisplay.h b/src/egl/main/egldisplay.h
index 22fb5c8..dcec764 100644
--- a/src/egl/main/egldisplay.h
+++ b/src/egl/main/egldisplay.h
@@ -94,6 +94,7 @@ struct _egl_extensions
    /* Please keep these sorted alphabetically. */
    EGLBoolean ANDROID_framebuffer_target;
    EGLBoolean ANDROID_image_native_buffer;
+   EGLBoolean ANDROID_native_fence_sync;
    EGLBoolean ANDROID_recordable;
 
    EGLBoolean CHROMIUM_sync_control;
diff --git a/src/egl/main/eglfallbacks.c b/src/egl/main/eglfallbacks.c
index d0fce8c..017d337 100644
--- a/src/egl/main/eglfallbacks.c
+++ b/src/egl/main/eglfallbacks.c
@@ -92,6 +92,7 @@ _eglInitDriverFallbacks(_EGLDriver *drv)
    drv->API.WaitSyncKHR = NULL;
    drv->API.SignalSyncKHR = NULL;
    drv->API.GetSyncAttrib = _eglGetSyncAttrib;
+   drv->API.DupNativeFenceFDANDROID = NULL;
 
    drv->API.CreateDRMImageMESA = NULL;
    drv->API.ExportDRMImageMESA = NULL;
diff --git a/src/egl/main/eglsync.c b/src/egl/main/eglsync.c
index eb9950d..ccfa474 100644
--- a/src/egl/main/eglsync.c
+++ b/src/egl/main/eglsync.c
@@ -49,24 +49,23 @@ _eglParseSyncAttribList(_EGLSync *sync, const EGLAttrib *attrib_list)
    for (i = 0; attrib_list[i] != EGL_NONE; i++) {
       EGLAttrib attr = attrib_list[i++];
       EGLAttrib val = attrib_list[i];
-      EGLint err = EGL_SUCCESS;
 
       switch (attr) {
       case EGL_CL_EVENT_HANDLE_KHR:
-         if (sync->Type == EGL_SYNC_CL_EVENT_KHR) {
-            sync->CLEvent = val;
-            break;
-         }
-         /* fall through */
-      default:
-         (void) val;
-         err = EGL_BAD_ATTRIBUTE;
+         if (sync->Type != EGL_SYNC_CL_EVENT_KHR)
+            goto bad_attrib;
+         sync->CLEvent = val;
          break;
-      }
-
-      if (err != EGL_SUCCESS) {
+      case EGL_SYNC_NATIVE_FENCE_FD_ANDROID:
+         if (sync->Type != EGL_SYNC_NATIVE_FENCE_ANDROID)
+            goto bad_attrib;
+         /* we take ownership of the native fd, so no dup(): */
+         sync->SyncFd = val;
+         break;
+      bad_attrib:
+      default:
          _eglLog(_EGL_DEBUG, "bad sync attribute 0x%" PRIxPTR, attr);
-         return err;
+         return EGL_BAD_ATTRIBUTE;
       }
    }
 
@@ -83,6 +82,7 @@ _eglInitSync(_EGLSync *sync, _EGLDisplay *dpy, EGLenum type,
    _eglInitResource(&sync->Resource, sizeof(*sync), dpy);
    sync->Type = type;
    sync->SyncStatus = EGL_UNSIGNALED_KHR;
+   sync->SyncFd = EGL_NO_NATIVE_FENCE_FD_ANDROID;
 
    err = _eglParseSyncAttribList(sync, attrib_list);
    if (err != EGL_SUCCESS)
@@ -92,6 +92,13 @@ _eglInitSync(_EGLSync *sync, _EGLDisplay *dpy, EGLenum type,
    case EGL_SYNC_CL_EVENT_KHR:
       sync->SyncCondition = EGL_SYNC_CL_EVENT_COMPLETE_KHR;
       break;
+   case EGL_SYNC_NATIVE_FENCE_ANDROID:
+      sync->SyncCondition = EGL_SYNC_NATIVE_FENCE_SIGNALED_ANDROID;
+      if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID)
+         sync->SyncCondition = EGL_SYNC_PRIOR_COMMANDS_COMPLETE_KHR;
+      else
+         sync->SyncCondition = EGL_SYNC_NATIVE_FENCE_SIGNALED_ANDROID;
+      break;
    default:
       sync->SyncCondition = EGL_SYNC_PRIOR_COMMANDS_COMPLETE_KHR;
    }
@@ -123,10 +130,12 @@ _eglGetSyncAttrib(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
       break;
    case EGL_SYNC_CONDITION_KHR:
       if (sync->Type != EGL_SYNC_FENCE_KHR &&
-          sync->Type != EGL_SYNC_CL_EVENT_KHR)
+          sync->Type != EGL_SYNC_CL_EVENT_KHR &&
+          sync->Type != EGL_SYNC_NATIVE_FENCE_ANDROID)
          return _eglError(EGL_BAD_ATTRIBUTE, "eglGetSyncAttribKHR");
       *value = sync->SyncCondition;
       break;
+
    default:
       return _eglError(EGL_BAD_ATTRIBUTE, "eglGetSyncAttribKHR");
       break;
diff --git a/src/egl/main/eglsync.h b/src/egl/main/eglsync.h
index 83b6f72..5ac76f3 100644
--- a/src/egl/main/eglsync.h
+++ b/src/egl/main/eglsync.h
@@ -48,6 +48,7 @@ struct _egl_sync
    EGLenum SyncStatus;
    EGLenum SyncCondition;
    EGLAttrib CLEvent;
+   EGLint SyncFd;
 };
 
 
-- 
2.10.0



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