Initial implementation of GPU no filter NinePatch

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"
 
@@ skipping 579 matching lines @@
                                   const SkPaint& skPaint,
                                   const SkMatrix& viewM,
                                   SkXfermode::Mode primColorMode,
                                   bool primitiveIsSrc,
                                   GrPaint* grPaint) {
     return skpaint_to_grpaint_impl(context, skPaint, viewM, nullptr, &primColorMode, primitiveIsSrc,
                                    grPaint);
 }
 
 
+bool SkPaintToGrPaintWithTexture(GrContext* context,
+                                 const SkPaint& paint,
+                                 const SkMatrix& viewM,
+                                 const GrFragmentProcessor* fp,
+                                 bool textureIsAlphaOnly,
+                                 GrPaint* grPaint) {
+    SkAutoTUnref<const GrFragmentProcessor> shaderFP;
+    if (textureIsAlphaOnly) {
+        if (const SkShader* shader = paint.getShader()) {
+            shaderFP.reset(shader->asFragmentProcessor(context,
+                                                       viewM,
+                                                       nullptr,
+                                                       paint.getFilterQuality()));
+            if (!shaderFP) {
+                return false;
+            }
+            const GrFragmentProcessor* fpSeries[] = { shaderFP.get(), fp };
+            shaderFP.reset(GrFragmentProcessor::RunInSeries(fpSeries, 2));
+        } else {
+            shaderFP.reset(GrFragmentProcessor::MulOutputByInputUnpremulColor(fp));
+        }
+    } else {
+        shaderFP.reset(GrFragmentProcessor::MulOutputByInputAlpha(fp));
+    }
+
+    return SkPaintToGrPaintReplaceShader(context, paint, shaderFP.get(), grPaint);
+}
+
+
 ////////////////////////////////////////////////////////////////////////////////////////////////
 
 SkImageInfo GrMakeInfoFromTexture(GrTexture* tex, int w, int h, bool isOpaque) {
 #ifdef SK_DEBUG
     const GrSurfaceDesc& desc = tex->desc();
     SkASSERT(w <= desc.fWidth);
     SkASSERT(h <= desc.fHeight);
 #endif
     const GrPixelConfig config = tex->config();
     SkColorType ct;
@@ skipping 45 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;
 }