From ddb9cc9cffceea1e99a27b1300734ea8ef1f97e7 Mon Sep 17 00:00:00 2001
From: Ady Abraham <adyabr@google.com>
Date: Wed, 22 Apr 2020 19:47:07 -0700
Subject: SurfaceFlinger: fix buffer usage bits of RefreshRateOverlay

Set the correct gralloc bits on the buffer, and clear it before drawing
the numbers.

Bug: 154773593
Test: Enable refresh rate overlay on emulation
Change-Id: I977507a80955fadeae7ad7504d5a4dfef5d0a693
---
 services/surfaceflinger/RefreshRateOverlay.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'services/surfaceflinger/RefreshRateOverlay.cpp')

diff --git a/services/surfaceflinger/RefreshRateOverlay.cpp b/services/surfaceflinger/RefreshRateOverlay.cpp
index 0a0f2f132e..2e7fbc1a78 100644
--- a/services/surfaceflinger/RefreshRateOverlay.cpp
+++ b/services/surfaceflinger/RefreshRateOverlay.cpp
@@ -116,9 +116,13 @@ sp<GraphicBuffer> RefreshRateOverlay::SevenSegmentDrawer::drawNumber(int number,
 
     sp<GraphicBuffer> buffer =
             new GraphicBuffer(BUFFER_WIDTH, BUFFER_HEIGHT, HAL_PIXEL_FORMAT_RGBA_8888, 1,
-                              GRALLOC_USAGE_SW_WRITE_RARELY, "RefreshRateOverlayBuffer");
+                              GRALLOC_USAGE_SW_WRITE_RARELY | GRALLOC_USAGE_HW_COMPOSER |
+                                      GRALLOC_USAGE_HW_TEXTURE,
+                              "RefreshRateOverlayBuffer");
     uint8_t* pixels;
     buffer->lock(GRALLOC_USAGE_SW_WRITE_RARELY, reinterpret_cast<void**>(&pixels));
+    // Clear buffer content
+    drawRect(Rect(BUFFER_WIDTH, BUFFER_HEIGHT), half4(0), buffer, pixels);
     int left = 0;
     if (hundreds != 0) {
         drawDigit(hundreds, left, color, buffer, pixels);
-- 
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