Add a deferred copy surface (take 2)

This CL forces all GrSurface copies to go through a GrSurfaceContext (rather than GrContext).

There is a bit of goofiness going on here until read/writePixels is also consolidated in GrSurfaceContext and a proxy-backed SkImage/SkSurface is added.

This is a reland of https://skia-review.googlesource.com/c/5773/ (Add a deferred copy surface)

Change-Id: Ide560f569aede5e622420dc2f30eef76357d69f4
Reviewed-on: https://skia-review.googlesource.com/5939
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/include/private/GrSurfaceProxy.h b/include/private/GrSurfaceProxy.h
index 731603b2c9..12972c21be 100644
--- a/include/private/GrSurfaceProxy.h
+++ b/include/private/GrSurfaceProxy.h
@@ -266,6 +266,20 @@ public:
         return fGpuMemorySize;
     }
 
+    // Helper function that creates a temporary SurfaceContext to perform the copy
+    static sk_sp<GrSurfaceProxy> Copy(GrContext*, GrSurfaceProxy* src,
+                                      SkIRect srcRect, SkBudgeted);
+
+    // Copy the entire 'src'
+    static sk_sp<GrSurfaceProxy> Copy(GrContext* context, GrSurfaceProxy* src,
+                                      SkBudgeted budgeted) {
+        return Copy(context, src, SkIRect::MakeWH(src->width(), src->height()), budgeted);
+    }
+
+    // Test-only entry point - should decrease in use as proxies propagate
+    static sk_sp<GrSurfaceProxy> TestCopy(GrContext* context, const GrSurfaceDesc& dstDesc,
+                                          GrTexture* srcTexture, SkBudgeted budgeted);
+
     bool isWrapped_ForTesting() const;
 
     SkDEBUGCODE(void validate(GrContext*) const;)