src/gpu/effects/GrDisableColorXP.h

/*
 * Copyright 2014 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef GrDisableColorXP_DEFINED
#define GrDisableColorXP_DEFINED

#include "GrTypes.h"
#include "GrXferProcessor.h"
#include "SkRefCnt.h"

// See the comment above GrXPFactory's definition about this warning suppression.
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wnon-virtual-dtor"
#endif
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wnon-virtual-dtor"
#endif
class GrDisableColorXPFactory : public GrXPFactory {
public:
    static const GrXPFactory* Get();

private:
    constexpr GrDisableColorXPFactory() {}

    AnalysisProperties analysisProperties(const GrProcessorAnalysisColor&,
                                          const GrProcessorAnalysisCoverage&,
                                          const GrCaps&,
                                          GrPixelConfigIsClamped) const override {
        return AnalysisProperties::kCompatibleWithAlphaAsCoverage |
               AnalysisProperties::kIgnoresInputColor;
    }

    sk_sp<const GrXferProcessor> makeXferProcessor(const GrProcessorAnalysisColor&,
                                                   GrProcessorAnalysisCoverage,
                                                   bool hasMixedSamples,
                                                   const GrCaps&,
                                                   GrPixelConfigIsClamped) const override;

    GR_DECLARE_XP_FACTORY_TEST

    typedef GrXPFactory INHERITED;
};
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
#if defined(__clang__)
#pragma clang diagnostic pop
#endif

inline const GrXPFactory* GrDisableColorXPFactory::Get() {
    // If this is constructed as static constexpr by cl.exe (2015 SP2) the vtable is null.
#ifdef SK_BUILD_FOR_WIN
    static const GrDisableColorXPFactory gDisableColorXPFactory;
#else
    static constexpr const GrDisableColorXPFactory gDisableColorXPFactory;
#endif
    return &gDisableColorXPFactory;
}

#endif