Add API for flushing surfaces with gpu semaphores

BUG=skia:

Change-Id: Ia4bfef784cd5f2516ceccafce958be18a86f91d1
Reviewed-on: https://skia-review.googlesource.com/11488
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Forrest Reiling <freiling@google.com>

1 files changed, 13 insertions, 1 deletions

diff --git a/src/image/SkSurface.cpp b/src/image/SkSurface.cpp
index cd2a5f185f..fbd9f836d6 100644
--- a/src/image/SkSurface.cpp
+++ b/src/image/SkSurface.cpp
@@ -184,7 +184,19 @@ bool SkSurface::getRenderTargetHandle(GrBackendObject* obj, BackendHandleAccess
 }
 
 void SkSurface::prepareForExternalIO() {
-  asSB(this)->onPrepareForExternalIO();
+    this->flush();
+}
+
+void SkSurface::flush() {
+    asSB(this)->onFlush(0, nullptr);
+}
+
+void SkSurface::flushAndSignalSemaphores(int numSemaphores, GrBackendSemaphore* signalSemaphores) {
+    return asSB(this)->onFlush(numSemaphores, signalSemaphores);
+}
+
+void SkSurface::wait(int numSemaphores, const GrBackendSemaphore* waitSemaphores) {
+    asSB(this)->onWait(numSemaphores, waitSemaphores);
 }
 
 //////////////////////////////////////////////////////////////////////////////////////