From e4579adfdfb4b9f195d162835a69d9c2a974a6ac Mon Sep 17 00:00:00 2001
From: bsalomon <bsalomon@google.com>
Date: Wed, 8 Apr 2015 08:38:40 -0700
Subject: Add helper for creating a SkSurface from a client created texture.

Review URL: https://codereview.chromium.org/1071603002
---
 src/image/SkSurface_Gpu.cpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'src/image/SkSurface_Gpu.cpp')

diff --git a/src/image/SkSurface_Gpu.cpp b/src/image/SkSurface_Gpu.cpp
index b94e4e30bd..ac2f7fe25e 100644
--- a/src/image/SkSurface_Gpu.cpp
+++ b/src/image/SkSurface_Gpu.cpp
@@ -99,4 +99,24 @@ SkSurface* SkSurface::NewRenderTarget(GrContext* ctx, Budgeted budgeted, const S
     return SkNEW_ARGS(SkSurface_Gpu, (device));
 }
 
+SkSurface* SkSurface::NewWrappedRenderTarget(GrContext* context, GrBackendTextureDesc desc,
+                                             const SkSurfaceProps* props) {
+    if (NULL == context) {
+        return NULL;
+    }
+    if (!SkToBool(desc.fFlags & kRenderTarget_GrBackendTextureFlag)) {
+        return NULL;
+    }
+    SkAutoTUnref<GrSurface> surface(context->wrapBackendTexture(desc));
+    if (!surface) {
+        return NULL;
+    }
+    SkAutoTUnref<SkGpuDevice> device(SkGpuDevice::Create(surface->asRenderTarget(), props,
+                                                         SkGpuDevice::kNeedClear_Flag));
+    if (!device) {
+        return NULL;
+    }
+    return SkNEW_ARGS(SkSurface_Gpu, (device));
+}
+
 #endif
-- 
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