Add "lazy" texture proxies

Adds ultra-deferred proxies that are instantiated by a user-supplied
callback during flush.

Bug: skia:7190
Change-Id: I75a7ac6dba953c3b0a99febc203a7f4d2f3789fc
Reviewed-on: https://skia-review.googlesource.com/76461
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/private/GrRenderTargetProxy.h b/include/private/GrRenderTargetProxy.h
index e52588b1f1..a5f876bdf1 100644
--- a/include/private/GrRenderTargetProxy.h
+++ b/include/private/GrRenderTargetProxy.h
@@ -67,6 +67,9 @@ protected:
     GrRenderTargetProxy(const GrCaps&, const GrSurfaceDesc&,
                         SkBackingFit, SkBudgeted, uint32_t flags);
 
+    // Lazy-callback version
+    GrRenderTargetProxy(LazyInstantiateCallback&&, GrPixelConfig);
+
     // Wrapped version
     GrRenderTargetProxy(sk_sp<GrSurface>, GrSurfaceOrigin);
 
@@ -74,6 +77,7 @@ protected:
 
 private:
     size_t onUninstantiatedGpuMemorySize() const override;
+    SkDEBUGCODE(void validateLazyTexture(const GrTexture*) override { SkASSERT(0); })
 
     int                 fSampleCnt;
     bool                fNeedsStencil;