Add debug memory tracking to SkiaGLPipeline

Test: Sample output is below

D/OpenGLRenderer: Resource Cache Usage:
D/OpenGLRenderer:       32 items out of 8192 maximum items
D/OpenGLRenderer:  4635572 bytes (4.42 MB) out of 96.00 MB maximum

This is less verbose than OpenGL memory debug output for
two reasons:
(1) SkiaGL has less caches.
(2) SkiaGL does not support printing on cache additions/evictions.
    This seems like more of an internal debugging tool rather than
    a user-facing debug feature.  I think it's best to leave this
    unimplemented until we find that it might be useful.

BUG:32370375

Change-Id: Ib063f1c2a7f88e9840341b1001d227f556d88f26

libs/hwui/pipeline/skia/SkiaOpenGLPipeline.cpp

@@ -95,6 +95,11 @@ bool SkiaOpenGLPipeline::draw(const Frame& frame, const SkRect& screenDirty,
         profileCanvas->flush();
     }
 
+    // Log memory statistics
+    if (CC_UNLIKELY(Properties::debugLevel != kDebugDisabled)) {
+        dumpResourceCacheUsage();
+    }
+
     return true;
 }
 

libs/hwui/pipeline/skia/SkiaPipeline.cpp

@@ -253,6 +253,20 @@ void SkiaPipeline::renderFrame(const LayerUpdateQueue& layers, const SkRect& cli
     canvas->flush();
 }
 
+void SkiaPipeline::dumpResourceCacheUsage() const {
+    int resources, maxResources;
+    size_t bytes, maxBytes;
+    mRenderThread.getGrContext()->getResourceCacheUsage(&resources, &bytes);
+    mRenderThread.getGrContext()->getResourceCacheLimits(&maxResources, &maxBytes);
+
+    SkString log("Resource Cache Usage:\n");
+    log.appendf("%8d items out of %d maximum items\n", resources, maxResources);
+    log.appendf("%8zu bytes (%.2f MB) out of %.2f MB maximum\n",
+            bytes, bytes * (1.0f / (1024.0f * 1024.0f)), maxBytes * (1.0f / (1024.0f * 1024.0f)));
+
+    ALOGD("%s", log.c_str());
+}
+
 } /* namespace skiapipeline */
 } /* namespace uirenderer */
 } /* namespace android */

libs/hwui/pipeline/skia/SkiaPipeline.h

@@ -96,7 +96,10 @@ public:
         mSpotShadowAlpha = lightInfo.spotShadowAlpha;
         mLightCenter = lightGeometry.center;
     }
+
 protected:
+    void dumpResourceCacheUsage() const;
+
     renderthread::RenderThread& mRenderThread;
 
 private:

libs/hwui/pipeline/skia/SkiaVulkanPipeline.cpp

@@ -81,6 +81,11 @@ bool SkiaVulkanPipeline::draw(const Frame& frame, const SkRect& screenDirty,
         profileCanvas->flush();
     }
 
+    // Log memory statistics
+    if (CC_UNLIKELY(Properties::debugLevel != kDebugDisabled)) {
+        dumpResourceCacheUsage();
+    }
+
     return true;
 }