Creating functions for uploading a mipmapped texture.

src/core/SkMipMap.h

Index: src/core/SkMipMap.h
diff --git a/src/core/SkMipMap.h b/src/core/SkMipMap.h
index b3e958d63c6f7e921ed7ee758283cc6d2e596fd9..e91f1c7280d9dd31e08ecac104257537c73f4f9d 100644
--- a/src/core/SkMipMap.h
+++ b/src/core/SkMipMap.h
@@ -28,6 +28,11 @@ public:
     };
 
     bool extractLevel(SkScalar scale, Level*) const;
+    int getLevelsCount() const;
+    // getLevel() is 1-indexed because the SkMipMap contains the generated

[reed1, 2016/01/22 16:29:13]

All of skia's other apis are zero-based for indices/loops. Lets use that
convention here as well.

int countLevels() const;
void getLevel(int index, Level*) const;

No need for the bool, since it is just an error to specify a bad index.

[Chris Blume, 2016/01/25 08:18:00]

Done.

+    // mipmaps, which does not include the base level (which is normally
+    // mipmap level 0). SkMipMap contains mipmap levels 1-x, not 0-x.
+    bool getLevel(int levelIndex, Level* levelPtr) const;
 
 protected:
     void onDataChange(void* oldData, void* newData) override {