Re-enable CPU mipmap generation for Ganesh. Aniso mips were landed a while ago. However, the CPU bu…

src/gpu/SkGr.cpp

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkGr.h"
 #include "SkGrPriv.h"
@@ skipping 326 matching lines @@
         if (texture) {
             return texture;
         }
     }
 
     GrTexture* texture = create_texture_from_yuv(ctx, bitmap, desc);
     if (texture) {
         return texture;
     }
 
+    // SkMipMap::Build doesn't handle sRGB data correctly (yet).
+    // Failover to the GL code-path for now.
+    if (kLinear_SkColorProfileType != bitmap.profileType()) {
+        return nullptr;
+    }
+
     SkASSERT(sizeof(int) <= sizeof(uint32_t));
     if (bitmap.width() < 0 || bitmap.height() < 0) {
         return nullptr;
     }
 
     SkAutoPixmapUnlock srcUnlocker;
     if (!bitmap.requestLock(&srcUnlocker)) {
         return nullptr;
     }
     const SkPixmap& pixmap = srcUnlocker.pixmap();
@@ skipping 386 matching lines @@
             SkErrorInternals::SetError( kInvalidPaint_SkError,
                                         "Sorry, I don't understand the filtering "
                                         "mode you asked for.  Falling back to "
                                         "MIPMaps.");
             textureFilterMode = GrTextureParams::kMipMap_FilterMode;
             break;
 
     }
     return textureFilterMode;
 }