Add mixed samples support to XPs

src/gpu/effects/GrCustomXfermode.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "effects/GrCustomXfermode.h"
 #include "effects/GrCustomXfermodePriv.h"
 
@@ skipping 511 matching lines @@
 ///////////////////////////////////////////////////////////////////////////////
 
 class CustomXP : public GrXferProcessor {
 public:
     CustomXP(SkXfermode::Mode mode, GrBlendEquation hwBlendEquation)
         : fMode(mode),
           fHWBlendEquation(hwBlendEquation) {
         this->initClassID<CustomXP>();
     }
 
-    CustomXP(SkXfermode::Mode mode, const DstTexture* dstTexture)
-        : INHERITED(dstTexture, true),
+    CustomXP(const GrPipelineBuilder& builder, const DstTexture* dstTexture, SkXfermode::Mode mode)
+        : INHERITED(builder, dstTexture, true),
           fMode(mode),
           fHWBlendEquation(static_cast<GrBlendEquation>(-1)) {
         this->initClassID<CustomXP>();
     }
 
     const char* name() const override { return "Custom Xfermode"; }
 
     GrGLXferProcessor* createGLInstance() const override;
 
-    bool hasSecondaryOutput() const override { return false; }
-
     SkXfermode::Mode mode() const { return fMode; }
     bool hasHWBlendEquation() const { return -1 != static_cast<int>(fHWBlendEquation); }
 
     GrBlendEquation hwBlendEquation() const {
         SkASSERT(this->hasHWBlendEquation());
         return fHWBlendEquation;
     }
 
 private:
     GrXferProcessor::OptFlags onGetOptimizations(const GrProcOptInfo& colorPOI,
@@ skipping 231 matching lines @@
 
 GrCustomXPFactory::GrCustomXPFactory(SkXfermode::Mode mode)
     : fMode(mode),
       fHWBlendEquation(hw_blend_equation(mode)) {
     SkASSERT(GrCustomXfermode::IsSupportedMode(fMode));
     this->initClassID<GrCustomXPFactory>();
 }
 
 GrXferProcessor*
 GrCustomXPFactory::onCreateXferProcessor(const GrCaps& caps,
+                                         const GrPipelineBuilder& builder,
                                          const GrProcOptInfo& colorPOI,
                                          const GrProcOptInfo& coveragePOI,
                                          const DstTexture* dstTexture) const {
     if (can_use_hw_blend_equation(fHWBlendEquation, coveragePOI, caps)) {
         SkASSERT(!dstTexture || !dstTexture->texture());
         return SkNEW_ARGS(CustomXP, (fMode, fHWBlendEquation));
     }
-    return SkNEW_ARGS(CustomXP, (fMode, dstTexture));
+    return SkNEW_ARGS(CustomXP, (builder, dstTexture, fMode));
 }
 
 bool GrCustomXPFactory::willReadDstColor(const GrCaps& caps,
+                                         const GrPipelineBuilder&,
                                          const GrProcOptInfo& colorPOI,
                                          const GrProcOptInfo& coveragePOI) const {
     return !can_use_hw_blend_equation(fHWBlendEquation, coveragePOI, caps);
 }
 
 void GrCustomXPFactory::getInvariantBlendedColor(const GrProcOptInfo& colorPOI,
                                                  InvariantBlendedColor* blendedColor) const {
     blendedColor->fWillBlendWithDst = true;
     blendedColor->fKnownColorFlags = kNone_GrColorComponentFlags;
 }
 
 GR_DEFINE_XP_FACTORY_TEST(GrCustomXPFactory);
 GrXPFactory* GrCustomXPFactory::TestCreate(SkRandom* rand,
                                            GrContext*,
                                            const GrCaps&,
                                            GrTexture*[]) {
     int mode = rand->nextRangeU(SkXfermode::kLastCoeffMode + 1, SkXfermode::kLastSeparableMode);
 
     return SkNEW_ARGS(GrCustomXPFactory, (static_cast<SkXfermode::Mode>(mode)));
 }