Implement GPU/OpList DDLs

This relies on https://skia-review.googlesource.com/c/skia/+/102101 (Add SkSurface_Gpu::MakeWrappedRenderTarget method) landing first

TBR=bsalomon@google.com
Change-Id: I4d2d66af5800407f638ef32d7b19ce49084bd4e4
Reviewed-on: https://skia-review.googlesource.com/102263
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>

1 files changed, 46 insertions, 8 deletions

diff --git a/include/private/SkDeferredDisplayList.h b/include/private/SkDeferredDisplayList.h
index 392a952a1d..a3517bb6a0 100644
--- a/include/private/SkDeferredDisplayList.h
+++ b/include/private/SkDeferredDisplayList.h
@@ -10,7 +10,14 @@
 
 #include "SkSurfaceCharacterization.h"
 
-class SkImage; // TODO: rm this since it is just for the temporary placeholder implementation
+#if SK_SUPPORT_GPU
+#include "GrOpList.h"
+#endif
+
+#ifdef SK_RASTER_RECORDER_IMPLEMENTATION
+class SkImage; // DDL TODO: rm this since it is just for the temporary placeholder implementation
+#endif
+
 class SkSurface;
 
 /*
@@ -21,24 +28,55 @@ class SkSurface;
  */
 class SkDeferredDisplayList {
 public:
-    SkDeferredDisplayList(const SkSurfaceCharacterization& characterization,
-                          sk_sp<SkImage> image)  // TODO rm this parameter
+
+#ifdef SK_RASTER_RECORDER_IMPLEMENTATION
+    SkDeferredDisplayList(const SkSurfaceCharacterization& characterization, sk_sp<SkImage> image)
             : fCharacterization(characterization)
             , fImage(std::move(image)) {
     }
 
+    // DDL TODO: remove this. It is just scaffolding to get something up & running
+    bool draw(SkSurface*) const;
+#endif
+
+#if SK_SUPPORT_GPU
+    // This object is the source from which the lazy proxy backing the DDL will pull its backing
+    // texture when the DDL is replayed. It has to be separately ref counted bc the lazy proxy
+    // can outlive the DDL.
+    class LazyProxyData : public SkRefCnt {
+    public:
+        // Upon being replayed - this field will be filled in (by the DrawingManager) with the proxy
+        // backing the destination SkSurface. Note that, since there is no good place to clear it
+        // it can become a dangling pointer.
+        GrRenderTargetProxy*     fReplayDest = nullptr;
+    };
+#else
+    class LazyProxyData : public SkRefCnt {};
+#endif
+
+    SkDeferredDisplayList(const SkSurfaceCharacterization& characterization,
+                          sk_sp<LazyProxyData>);
+
     const SkSurfaceCharacterization& characterization() const {
         return fCharacterization;
     }
 
-    // TODO: remove this. It is just scaffolding to get something up & running
-    bool draw(SkSurface*) const;
-
 private:
+    friend class GrDrawingManager; // for access to 'fOpLists' and 'fLazyProxyData'
+    friend class SkDeferredDisplayListRecorder; // for access to 'fLazyProxyData'
+
     const SkSurfaceCharacterization fCharacterization;
 
-    // TODO: actually store the GPU opLists
-    sk_sp<SkImage> fImage;
+#ifdef SK_RASTER_RECORDER_IMPLEMENTATION
+    sk_sp<SkImage>               fImage;
+#else
+
+#if SK_SUPPORT_GPU
+    SkTArray<sk_sp<GrOpList>>    fOpLists;
+#endif
+    sk_sp<LazyProxyData>         fLazyProxyData;
+
+#endif
 };
 
 #endif