MakeBackendTextureFromSkImage

Creates a static function on SkImage which converts the SkImage to a
GrBackendTexture. The texture is unowned by Skia, and must be deleted
by the caller. Allows for a no-copy / no-conversion fast path if the
provided image is unowned (unique()) and texture backed.

Change-Id: I8a48f9cc39de792725cd72057d98cd1c4594daab
Reviewed-on: https://skia-review.googlesource.com/52440
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Eric Karl <ericrk@chromium.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/image/SkImage.cpp b/src/image/SkImage.cpp
index 7e1b238318..b60224038e 100644
--- a/src/image/SkImage.cpp
+++ b/src/image/SkImage.cpp
@@ -354,6 +354,13 @@ sk_sp<SkImage> SkImage::MakeFromDeferredTextureImageData(GrContext* context, con
     return nullptr;
 }
 
+bool SkImage::MakeBackendTextureFromSkImage(GrContext*,
+                                            sk_sp<SkImage>,
+                                            GrBackendTexture*,
+                                            BackendTextureReleaseProc*) {
+    return false;
+}
+
 sk_sp<SkImage> SkImage::MakeFromAdoptedTexture(GrContext* ctx,
                                                const GrBackendTexture& tex, GrSurfaceOrigin origin,
                                                SkAlphaType at, sk_sp<SkColorSpace> cs) {