Allow caller to specify if the want mip maps in makeTextureImage call.

Since Ganesh no longer will allocate mips late, this gives the clients a
way to tell skia that they want the texture they will be using to have mips.
It also supports allowing a client to take a non mipped texture backed
image and turn it into a new image which is mipped and texture backed.

Bug: chromium:834837
Change-Id: I1781ce618c22023b6309f248e7ee49e69bd3c6df
Reviewed-on: https://skia-review.googlesource.com/134323
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Eric Karl <ericrk@chromium.org>
Reviewed-by: Cary Clark <caryclark@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/src/gpu/GrTextureProducer.h b/src/gpu/GrTextureProducer.h
index 467948dfa6..c458d4fbe6 100644
--- a/src/gpu/GrTextureProducer.h
+++ b/src/gpu/GrTextureProducer.h
@@ -98,6 +98,21 @@ public:
                 proxyColorSpace, scaleAdjust);
     }
 
+    /**
+     * Returns a texture that is safe for use with the dstColorSpace. If willNeedMips is true then
+     * the returned texture is guaranteed to have allocated mip map levels. This can be a
+     * performance win if future draws with the texture require mip maps.
+     *
+     * Places the color space of the texture in (*proxyColorSpace).
+     */
+    // TODO: Once we remove support for npot textures, we should add a flag for must support repeat
+    // wrap mode. To support that flag now would require us to support scaleAdjust array like in
+    // refTextureProxyForParams, however the current public API that uses this call does not expose
+    // that array.
+    sk_sp<GrTextureProxy> refTextureProxy(GrMipMapped willNeedMips,
+                                          SkColorSpace* dstColorSpace,
+                                          sk_sp<SkColorSpace>* proxyColorSpace);
+
     virtual ~GrTextureProducer() {}
 
     int width() const { return fWidth; }