add local-matrix to shader::context

src/core/SkBlitter.cpp

-
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
-
 #include "SkBlitter.h"
 #include "SkAntiRun.h"
 #include "SkColor.h"
 #include "SkColorFilter.h"
 #include "SkCoreBlitters.h"
 #include "SkFilterShader.h"
 #include "SkReadBuffer.h"
 #include "SkWriteBuffer.h"
 #include "SkMask.h"
 #include "SkMaskFilter.h"
 #include "SkString.h"
 #include "SkTLazy.h"
 #include "SkUtils.h"
 #include "SkXfermode.h"
 
 SkBlitter::~SkBlitter() {}
 
 bool SkBlitter::isNullBlitter() const { return false; }
 
-bool SkBlitter::resetShaderContext(const SkBitmap& device, const SkPaint& paint,
-                                   const SkMatrix& matrix) {
+bool SkBlitter::resetShaderContext(const SkShader::ContextRec&) {
     return true;
 }
 
 SkShader::Context* SkBlitter::getShaderContext() const {
     return NULL;
 }
 
 const SkBitmap* SkBlitter::justAnOpaqueColor(uint32_t* value) {
     return NULL;
 }
@@ skipping 982 matching lines @@
     SkASSERT(fShaderContext);
 
     fShader->ref();
     fShaderFlags = fShaderContext->getFlags();
 }
 
 SkShaderBlitter::~SkShaderBlitter() {
     fShader->unref();
 }
 
-bool SkShaderBlitter::resetShaderContext(const SkBitmap& device, const SkPaint& paint,
-                                         const SkMatrix& matrix) {
-    SkShader::ContextRec rec(device, paint, matrix);
-
+bool SkShaderBlitter::resetShaderContext(const SkShader::ContextRec& rec) {
     // Only destroy the old context if we have a new one. We need to ensure to have a
     // live context in fShaderContext because the storage is owned by an SkSmallAllocator
     // outside of this class.
     // The new context will be of the same size as the old one because we use the same
     // shader to create it. It is therefore safe to re-use the storage.
     fShaderContext->~Context();
     SkShader::Context* ctx = fShader->createContext(rec, (void*)fShaderContext);
     if (NULL == ctx) {
         // Need a valid context in fShaderContext's storage, so we can later (or our caller) call
         // the in-place destructor.
         SkNEW_PLACEMENT_ARGS(fShaderContext, SkTransparentShaderContext, (*fShader, rec));
+        return false;
     }
-    return ctx != NULL;
+    return true;
 }