Store mipmap levels in deferred texture image

This is a follow-up to https://codereview.chromium.org/2115023002/ and
https://codereview.chromium.org/2034933003/ which were reverted due to
an access violation and a memory leak, respectively.

When creating the deferred texture image, detect if using medium / high
quality. If so, generate and store mipmaps in the deferred texture
image.

When creating a texture from that be sure to read it back out.

BUG=578304
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2242883004

Review-Url: https://codereview.chromium.org/2242883004

1 files changed, 5 insertions, 4 deletions

diff --git a/include/core/SkImage.h b/include/core/SkImage.h
index bdcb5b0abe..f55b679c0b 100644
--- a/include/core/SkImage.h
+++ b/include/core/SkImage.h
@@ -365,8 +365,7 @@ public:
 
     /** Drawing params for which a deferred texture image data should be optimized. */
     struct DeferredTextureImageUsageParams {
-        DeferredTextureImageUsageParams() : fPreScaleMipLevel(0) {}
-        DeferredTextureImageUsageParams(const SkMatrix matrix, const SkFilterQuality quality, 
+        DeferredTextureImageUsageParams(const SkMatrix matrix, const SkFilterQuality quality,
                                         int preScaleMipLevel)
             : fMatrix(matrix), fQuality(quality), fPreScaleMipLevel(preScaleMipLevel) {}
         SkMatrix        fMatrix;
@@ -397,7 +396,9 @@ public:
     size_t getDeferredTextureImageData(const GrContextThreadSafeProxy&,
                                        const DeferredTextureImageUsageParams[],
                                        int paramCnt,
-                                       void* buffer) const;
+                                       void* buffer,
+                                       SkSourceGammaTreatment treatment =
+                                       SkSourceGammaTreatment::kIgnore) const;
 
     /**
      * Returns a texture-backed image from data produced in SkImage::getDeferredTextureImageData.
@@ -470,7 +471,7 @@ protected:
 private:
     static sk_sp<SkImage> MakeTextureFromMipMap(GrContext*, const SkImageInfo&,
                                                 const GrMipLevel* texels, int mipLevelCount,
-                                                SkBudgeted);
+                                                SkBudgeted, SkSourceGammaTreatment);
 
     const int       fWidth;
     const int       fHeight;