SurfaceFlinger: Pass surface damage to HWC

Passes the surface damage from the incoming SurfaceFlingerConsumer
BufferQueue down to the hardware composer HAL interface, if the
HWC version number is 1.5 or greater.

Bug: 11239309
Change-Id: Ic4305210593874a8d6deba3319055b2b8c57e926

1 files changed, 27 insertions, 0 deletions

diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
index 77a9a19..c8b36ec 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -1020,6 +1020,21 @@ public:
         SharedBuffer const* sb = reg.getSharedBuffer(&visibleRegion.numRects);
         visibleRegion.rects = reinterpret_cast<hwc_rect_t const *>(sb->data());
     }
+    virtual void setSurfaceDamage(const Region& reg) {
+        if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_5)) {
+            return;
+        }
+        hwc_region_t& surfaceDamage = getLayer()->surfaceDamage;
+        // We encode default full-screen damage as INVALID_RECT upstream, but as
+        // 0 rects for HWComposer
+        if (reg.isRect() && reg.getBounds() == Rect::INVALID_RECT) {
+            surfaceDamage.numRects = 0;
+            surfaceDamage.rects = NULL;
+            return;
+        }
+        SharedBuffer const* sb = reg.getSharedBuffer(&surfaceDamage.numRects);
+        surfaceDamage.rects = reinterpret_cast<hwc_rect_t const *>(sb->data());
+    }
     virtual void setSidebandStream(const sp<NativeHandle>& stream) {
         ALOG_ASSERT(stream->handle() != NULL);
         getLayer()->compositionType = HWC_SIDEBAND;
@@ -1050,6 +1065,18 @@ public:
         }
 
         getLayer()->acquireFenceFd = -1;
+
+        if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_5)) {
+            return;
+        }
+
+        hwc_region_t& surfaceDamage = getLayer()->surfaceDamage;
+        sb = SharedBuffer::bufferFromData(surfaceDamage.rects);
+        if (sb) {
+            sb->release();
+            surfaceDamage.numRects = 0;
+            surfaceDamage.rects = NULL;
+        }
     }
 };