Add support for SkImageGenerator creating external textures

Copy the SkImageGenerator texture if tiling is needed and
original texture target is GR_GL_TEXTURE_EXTERNAL.

Bug: skia:
Change-Id: I98f5acc3883e2060b1a35f80633b02b08a706107
Reviewed-on: https://skia-review.googlesource.com/18268
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Stan Iliev <stani@google.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/gpu/GrImageTextureMaker.h b/src/gpu/GrImageTextureMaker.h
index 4f3e8bd3de..1a72f68e1b 100644
--- a/src/gpu/GrImageTextureMaker.h
+++ b/src/gpu/GrImageTextureMaker.h
@@ -24,7 +24,8 @@ protected:
     //       able to efficiently produce a "stretched" texture natively (e.g. picture-backed)
     //          GrTexture* generateTextureForParams(const CopyParams&) override;
     sk_sp<GrTextureProxy> refOriginalTextureProxy(bool willBeMipped,
-                                                  SkColorSpace* dstColorSpace) override;
+                                                  SkColorSpace* dstColorSpace,
+                                                  AllowedTexGenType onlyIfFast) override;
 
     void makeCopyKey(const CopyParams& stretch, GrUniqueKey* paramsCopyKey,
                      SkColorSpace* dstColorSpace) override;