lots of sRGB and F16 blits

src/core/SkBlitter_PM4f.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCoreBlitters.h"
 #include "SkColorPriv.h"
 #include "SkShader.h"
@@ skipping 338 matching lines @@
         fXfer = SkSafeRef(paint.getXfermode());
         fFlags = 0;
         if (is_opaque(paint, shaderContext)) {
             fFlags |= SkXfermode::kSrcIsOpaque_PM4fFlag;
         }
         if (kRGBA_F16_SkColorType == info.colorType()) {
             fFlags |= SkXfermode::kDstIsFloat16_U64Flag;
         }
         
         SkXfermode::Mode mode;
-        if (SkXfermode::AsMode(fXfer, &mode)) {
+        if (!SkXfermode::AsMode(fXfer, &mode)) {
             mode = SkXfermode::kSrcOver_Mode;
         }
         fProc1 = SkXfermode::GetU64Proc1(mode, fFlags);
         fProcN = SkXfermode::GetU64ProcN(mode, fFlags);
         
         fBuffer = nullptr;
         if (shaderContext) {
             fBuffer = new SkPM4f[info.width()];
         } else {
             fPM4f = SkColor4f::FromColor(paint.getColor()).premul();
@@ skipping 38 matching lines @@
                                    SkShader::Context* shaderContext,
                                    SkTBlitterAllocator* allocator) {
     return create<State32>(device, paint, shaderContext, allocator);
 }
 
 SkBlitter* SkBlitter_ARGB64_Create(const SkPixmap& device, const SkPaint& paint,
                                    SkShader::Context* shaderContext,
                                    SkTBlitterAllocator* allocator) {
     return create<State64>(device, paint, shaderContext, allocator);
 }