Adjust how present semaphore is handled

Avoids stashing a semaphore in a field
use unique_fd to ensure an unused present fence isn't leaked

Test: sample app ran in a loop for 3 hours, FD usage remained constant
Fixes: 295332012
Change-Id: Iee38e86587805ef3596e5f7efea3ca3b5c7758b3
diff --git a/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.cpp b/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.cpp
index 7744786..c5ffbb7 100644
--- a/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.cpp
+++ b/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.cpp
@@ -187,11 +187,12 @@
         dumpResourceCacheUsage();
     }
 
-    return {true, IRenderPipeline::DrawResult::kUnknownTime};
+    return {true, IRenderPipeline::DrawResult::kUnknownTime, android::base::unique_fd{}};
 }
 
-bool SkiaOpenGLPipeline::swapBuffers(const Frame& frame, bool drew, const SkRect& screenDirty,
-                                     FrameInfo* currentFrameInfo, bool* requireSwap) {
+bool SkiaOpenGLPipeline::swapBuffers(const Frame& frame, IRenderPipeline::DrawResult& drawResult,
+                                     const SkRect& screenDirty, FrameInfo* currentFrameInfo,
+                                     bool* requireSwap) {
     GL_CHECKPOINT(LOW);
 
     // Even if we decided to cancel the frame, from the perspective of jank
@@ -202,7 +203,7 @@
         return false;
     }
 
-    *requireSwap = drew || mEglManager.damageRequiresSwap();
+    *requireSwap = drawResult.success || mEglManager.damageRequiresSwap();
 
     if (*requireSwap && (CC_UNLIKELY(!mEglManager.swapBuffers(frame, screenDirty)))) {
         return false;
diff --git a/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.h b/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.h
index f0461be..098a746 100644
--- a/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.h
+++ b/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.h
@@ -44,8 +44,9 @@
             const std::vector<sp<RenderNode> >& renderNodes, FrameInfoVisualizer* profiler,
             const renderthread::HardwareBufferRenderParams& bufferParams) override;
     GrSurfaceOrigin getSurfaceOrigin() override { return kBottomLeft_GrSurfaceOrigin; }
-    bool swapBuffers(const renderthread::Frame& frame, bool drew, const SkRect& screenDirty,
-                     FrameInfo* currentFrameInfo, bool* requireSwap) override;
+    bool swapBuffers(const renderthread::Frame& frame, IRenderPipeline::DrawResult& drawResult,
+                     const SkRect& screenDirty, FrameInfo* currentFrameInfo,
+                     bool* requireSwap) override;
     DeferredLayerUpdater* createTextureLayer() override;
     bool setSurface(ANativeWindow* surface, renderthread::SwapBehavior swapBehavior) override;
     [[nodiscard]] android::base::unique_fd flush() override;
diff --git a/libs/hwui/pipeline/skia/SkiaVulkanPipeline.cpp b/libs/hwui/pipeline/skia/SkiaVulkanPipeline.cpp
index 86096d5..12cb69d 100644
--- a/libs/hwui/pipeline/skia/SkiaVulkanPipeline.cpp
+++ b/libs/hwui/pipeline/skia/SkiaVulkanPipeline.cpp
@@ -87,7 +87,7 @@
     }
 
     if (backBuffer.get() == nullptr) {
-        return {false, -1};
+        return {false, -1, android::base::unique_fd{}};
     }
 
     // update the coordinates of the global light position based on surface rotation
@@ -110,10 +110,10 @@
         profiler->draw(profileRenderer);
     }
 
-    nsecs_t submissionTime = IRenderPipeline::DrawResult::kUnknownTime;
+    VulkanManager::VkDrawResult drawResult;
     {
         ATRACE_NAME("flush commands");
-        submissionTime = vulkanManager().finishFrame(backBuffer.get());
+        drawResult = vulkanManager().finishFrame(backBuffer.get());
     }
     layerUpdateQueue->clear();
 
@@ -122,11 +122,12 @@
         dumpResourceCacheUsage();
     }
 
-    return {true, submissionTime};
+    return {true, drawResult.submissionTime, std::move(drawResult.presentFence)};
 }
 
-bool SkiaVulkanPipeline::swapBuffers(const Frame& frame, bool drew, const SkRect& screenDirty,
-                                     FrameInfo* currentFrameInfo, bool* requireSwap) {
+bool SkiaVulkanPipeline::swapBuffers(const Frame& frame, IRenderPipeline::DrawResult& drawResult,
+                                     const SkRect& screenDirty, FrameInfo* currentFrameInfo,
+                                     bool* requireSwap) {
     // Even if we decided to cancel the frame, from the perspective of jank
     // metrics the frame was swapped at this point
     currentFrameInfo->markSwapBuffers();
@@ -135,10 +136,10 @@
         return false;
     }
 
-    *requireSwap = drew;
+    *requireSwap = drawResult.success;
 
     if (*requireSwap) {
-        vulkanManager().swapBuffers(mVkSurface, screenDirty);
+        vulkanManager().swapBuffers(mVkSurface, screenDirty, std::move(drawResult.presentFence));
     }
 
     return *requireSwap;
diff --git a/libs/hwui/pipeline/skia/SkiaVulkanPipeline.h b/libs/hwui/pipeline/skia/SkiaVulkanPipeline.h
index 284cde5..e2ea57d 100644
--- a/libs/hwui/pipeline/skia/SkiaVulkanPipeline.h
+++ b/libs/hwui/pipeline/skia/SkiaVulkanPipeline.h
@@ -44,8 +44,9 @@
             const std::vector<sp<RenderNode> >& renderNodes, FrameInfoVisualizer* profiler,
             const renderthread::HardwareBufferRenderParams& bufferParams) override;
     GrSurfaceOrigin getSurfaceOrigin() override { return kTopLeft_GrSurfaceOrigin; }
-    bool swapBuffers(const renderthread::Frame& frame, bool drew, const SkRect& screenDirty,
-                     FrameInfo* currentFrameInfo, bool* requireSwap) override;
+    bool swapBuffers(const renderthread::Frame& frame, IRenderPipeline::DrawResult& drawResult,
+                     const SkRect& screenDirty, FrameInfo* currentFrameInfo,
+                     bool* requireSwap) override;
     DeferredLayerUpdater* createTextureLayer() override;
     [[nodiscard]] android::base::unique_fd flush() override;