Line data    Source code

       1             : /*
       2             :  * Copyright 2014 Google Inc.
       3             :  *
       4             :  * Use of this source code is governed by a BSD-style license that can be
       5             :  * found in the LICENSE file.
       6             :  */
       7             : 
       8             : #ifndef GrCoverageSetOpXP_DEFINED
       9             : #define GrCoverageSetOpXP_DEFINED
      10             : 
      11             : #include "GrTypes.h"
      12             : #include "GrXferProcessor.h"
      13             : #include "SkRegion.h"
      14             : 
      15             : // See the comment above GrXPFactory's definition about this warning suppression.
      16             : #if defined(__GNUC__) || defined(__clang)
      17             : #pragma GCC diagnostic push
      18             : #pragma GCC diagnostic ignored "-Wnon-virtual-dtor"
      19             : #endif
      20             : 
      21             : /**
      22             :  * This xfer processor directly blends the the src coverage with the dst using a set operator. It is
      23             :  * useful for rendering coverage masks using CSG. It can optionally invert the src coverage before
      24             :  * applying the set operator.
      25             :  */
      26             : class GrCoverageSetOpXPFactory : public GrXPFactory {
      27             : public:
      28             :     static const GrXPFactory* Get(SkRegion::Op regionOp, bool invertCoverage = false);
      29             : 
      30             : private:
      31             :     constexpr GrCoverageSetOpXPFactory(SkRegion::Op regionOp, bool invertCoverage);
      32             : 
      33             :     sk_sp<const GrXferProcessor> makeXferProcessor(const GrProcessorAnalysisColor&,
      34             :                                                    GrProcessorAnalysisCoverage,
      35             :                                                    bool hasMixedSamples,
      36             :                                                    const GrCaps&) const override;
      37             : 
      38           0 :     AnalysisProperties analysisProperties(const GrProcessorAnalysisColor&,
      39             :                                           const GrProcessorAnalysisCoverage&,
      40             :                                           const GrCaps&) const override {
      41           0 :         return AnalysisProperties::kIgnoresInputColor;
      42             :     }
      43             : 
      44             : 
      45             :     GR_DECLARE_XP_FACTORY_TEST;
      46             : 
      47             :     SkRegion::Op fRegionOp;
      48             :     bool         fInvertCoverage;
      49             : 
      50             :     typedef GrXPFactory INHERITED;
      51             : };
      52             : #if defined(__GNUC__) || defined(__clang)
      53             : #pragma GCC diagnostic pop
      54             : #endif
      55             : #endif
      56             :