Revert "Add support for render-ahead"

This reverts commit ec100976e0655acaa204c8800dfb83dadae20cc8.

Reason for revert: b/77971494
Test: hwuiunit passes

Change-Id: I2e7dc719d2df1dd939b275496c0edc38e458c434

1 files changed, 1 insertions, 25 deletions

diff --git a/libs/hwui/renderthread/CanvasContext.cpp b/libs/hwui/renderthread/CanvasContext.cpp
index 3deed6e0ba77..95ca8d9d2612 100644
--- a/libs/hwui/renderthread/CanvasContext.cpp
+++ b/libs/hwui/renderthread/CanvasContext.cpp
@@ -17,7 +17,6 @@
 #include "CanvasContext.h"
 #include <GpuMemoryTracker.h>
 
-#include "../Properties.h"
 #include "AnimationContext.h"
 #include "Caches.h"
 #include "EglManager.h"
@@ -33,6 +32,7 @@
 #include "renderstate/Stencil.h"
 #include "utils/GLUtils.h"
 #include "utils/TimeUtils.h"
+#include "../Properties.h"
 
 #include <cutils/properties.h>
 #include <private/hwui/DrawGlInfo.h>
@@ -159,7 +159,6 @@ void CanvasContext::setSurface(sp<Surface>&& surface) {
     if (hasSurface) {
         mHaveNewSurface = true;
         mSwapHistory.clear();
-        updateBufferCount();
     } else {
         mRenderThread.removeFrameCallback(this);
     }
@@ -393,9 +392,6 @@ void CanvasContext::draw() {
 
     waitOnFences();
 
-    frame.setPresentTime(mCurrentFrameInfo->get(FrameInfoIndex::Vsync) +
-                         (mRenderThread.timeLord().frameIntervalNanos() * (mRenderAheadDepth + 1)));
-
     bool requireSwap = false;
     bool didSwap =
             mRenderPipeline->swapBuffers(frame, drew, windowDirty, mCurrentFrameInfo, &requireSwap);
@@ -619,26 +615,6 @@ int64_t CanvasContext::getFrameNumber() {
     return mFrameNumber;
 }
 
-void overrideBufferCount(const sp<Surface>& surface, int bufferCount) {
-    struct SurfaceExposer : Surface {
-        using Surface::setBufferCount;
-    };
-    // Protected is just a sign, not a cop
-    ((*surface.get()).*&SurfaceExposer::setBufferCount)(bufferCount);
-}
-
-void CanvasContext::updateBufferCount() {
-    overrideBufferCount(mNativeSurface, 3 + mRenderAheadDepth);
-}
-
-void CanvasContext::setRenderAheadDepth(int renderAhead) {
-    if (renderAhead < 0 || renderAhead > 2 || renderAhead == mRenderAheadDepth) {
-        return;
-    }
-    mRenderAheadDepth = renderAhead;
-    updateBufferCount();
-}
-
 SkRect CanvasContext::computeDirtyRect(const Frame& frame, SkRect* dirty) {
     if (frame.width() != mLastFrameWidth || frame.height() != mLastFrameHeight) {
         // can't rely on prior content of window if viewport size changes