new image from backend desc
BUG=485243
Review URL: https://codereview.chromium.org/1121813002
diff --git a/include/core/SkImage.h b/include/core/SkImage.h
index ebc9a29..7128f6e 100644
--- a/include/core/SkImage.h
+++ b/include/core/SkImage.h
@@ -64,6 +64,24 @@
*/
static SkImage* NewFromData(SkData* data);
+ /**
+ * Create a new image from the specified descriptor. Note - the caller is responsible for
+ * managing the lifetime of the underlying platform texture.
+ *
+ * Will return NULL if the specified descriptor is unsupported.
+ */
+ static SkImage* NewFromTexture(GrContext*, const GrBackendTextureDesc&,
+ SkAlphaType = kPremul_SkAlphaType);
+
+ /**
+ * Create a new image by copying the pixels from the specified descriptor. No reference is
+ * kept to the original platform texture.
+ *
+ * Will return NULL if the specified descriptor is unsupported.
+ */
+ static SkImage* NewFromTextureCopy(GrContext*, const GrBackendTextureDesc&,
+ SkAlphaType = kPremul_SkAlphaType);
+
int width() const { return fWidth; }
int height() const { return fHeight; }
uint32_t uniqueID() const { return fUniqueID; }