From f2336e4500769bc0ff6a208289d757581b0ea91a Mon Sep 17 00:00:00 2001
From: Greg Daniel <egdaniel@google.com>
Date: Tue, 23 Jan 2018 16:38:14 -0500
Subject: Add lazy proxy's for wrapping backend textures

Bug: skia:
Change-Id: I3bb557cefc35312adc9515b5683d2ed747bb4eb3
Reviewed-on: https://skia-review.googlesource.com/96862
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
---
 src/gpu/GrProxyProvider.cpp | 51 +++++++++++++++++++++++++++++++++++----------
 1 file changed, 40 insertions(+), 11 deletions(-)

(limited to 'src/gpu/GrProxyProvider.cpp')

diff --git a/src/gpu/GrProxyProvider.cpp b/src/gpu/GrProxyProvider.cpp
index c49f6b8ea0..1267750687 100644
--- a/src/gpu/GrProxyProvider.cpp
+++ b/src/gpu/GrProxyProvider.cpp
@@ -330,17 +330,46 @@ sk_sp<GrTextureProxy> GrProxyProvider::createWrappedTextureProxy(
         return nullptr;
     }
 
-    sk_sp<GrTexture> texture(fResourceProvider->wrapBackendTexture(backendTex, ownership));
-    if (!texture) {
-        return nullptr;
-    }
-    if (releaseProc) {
-        texture->setRelease(releaseProc, releaseCtx);
-    }
-
-    SkASSERT(!texture->asRenderTarget());   // Strictly a GrTexture
-
-    return this->createWrapped(std::move(texture), origin);
+    GrSurfaceDesc desc;
+    desc.fOrigin = origin;
+    desc.fWidth = backendTex.width();
+    desc.fHeight = backendTex.height();
+    desc.fConfig = backendTex.config();
+    GrMipMapped mipMapped = backendTex.hasMipMaps() ? GrMipMapped::kYes : GrMipMapped::kNo;
+
+    sk_sp<GrTextureProxy> proxy = this->createLazyProxy(
+            [backendTex, ownership, releaseProc, releaseCtx]
+            (GrResourceProvider* resourceProvider, GrSurfaceOrigin* /*outOrigin*/) {
+                if (!resourceProvider) {
+                    // This lazy proxy was never initialized. If it has a releaseProc we must call
+                    // it now so that the client knows they can free the underlying backend object.
+                    if (releaseProc) {
+                        releaseProc(releaseCtx);
+                    }
+                    return sk_sp<GrTexture>();
+                }
+
+                sk_sp<GrTexture> tex = resourceProvider->wrapBackendTexture(backendTex,
+                                                                            ownership);
+                if (!tex) {
+                    return sk_sp<GrTexture>();
+                }
+                if (releaseProc) {
+                    tex->setRelease(releaseProc, releaseCtx);
+                }
+                SkASSERT(!tex->asRenderTarget());   // Strictly a GrTexture
+                // Make sure we match how we created the proxy with SkBudgeted::kNo
+                SkASSERT(SkBudgeted::kNo == tex->resourcePriv().isBudgeted());
+
+                return tex;
+            }, desc, mipMapped, SkBackingFit::kExact, SkBudgeted::kNo);
+
+    if (fResourceProvider) {
+        // In order to reuse code we always create a lazy proxy. When we aren't in DDL mode however,
+        // we're better off instantiating the proxy immediately here.
+        proxy->priv().doLazyInstantiation(fResourceProvider);
+    }
+    return proxy;
 }
 
 sk_sp<GrTextureProxy> GrProxyProvider::createWrappedTextureProxy(const GrBackendTexture& tex,
-- 
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