skia2/include/gpu/effects/GrPorterDuffXferProcessor.h
Brian Salomon 5be6c95fa9 Revert "Revert "Make it possible to query GrXPFactory for dst texture without GrPipelineAnalysis.""
This reverts commit 3329cceab5.

Reason for revert: Bot failures are unrelated to the original change.

Change-Id: I21b5927dc4384a25930bdefe16e57bcc9276ffa4
Reviewed-on: https://skia-review.googlesource.com/7347
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
2017-01-20 20:04:01 +00:00

81 lines
3.0 KiB
C++

/*
* 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 GrPorterDuffXferProcessor_DEFINED
#define GrPorterDuffXferProcessor_DEFINED
#include "GrTypes.h"
#include "GrXferProcessor.h"
#include "SkBlendMode.h"
class GrProcOptInfo;
// See the comment above GrXPFactory's definition about this warning suppression.
#if defined(__GNUC__) || defined(__clang)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wnon-virtual-dtor"
#endif
class GrPorterDuffXPFactory : public GrXPFactory {
public:
static const GrXPFactory* Get(SkBlendMode blendMode);
void getInvariantBlendedColor(const GrProcOptInfo& colorPOI,
GrXPFactory::InvariantBlendedColor*) const override;
/** Because src-over is so common we special case it for performance reasons. If this returns
null then the SimpleSrcOverXP() below should be used. */
static GrXferProcessor* CreateSrcOverXferProcessor(const GrCaps& caps,
const GrPipelineAnalysis&,
bool hasMixedSamples,
const GrXferProcessor::DstTexture*);
/** This XP implements non-LCD src-over using hw blend with no optimizations. It is returned
by reference because it is global and its ref-cnting methods are not thread safe. */
static const GrXferProcessor& SimpleSrcOverXP();
static inline void SrcOverInvariantBlendedColor(
GrColor inputColor,
GrColorComponentFlags validColorFlags,
bool isOpaque,
GrXPFactory::InvariantBlendedColor* blendedColor) {
if (!isOpaque) {
blendedColor->fWillBlendWithDst = true;
blendedColor->fKnownColorFlags = kNone_GrColorComponentFlags;
return;
}
blendedColor->fWillBlendWithDst = false;
blendedColor->fKnownColor = inputColor;
blendedColor->fKnownColorFlags = validColorFlags;
}
static bool SrcOverWillNeedDstTexture(const GrCaps&, const GrPipelineAnalysis&);
private:
constexpr GrPorterDuffXPFactory(SkBlendMode);
GrXferProcessor* onCreateXferProcessor(const GrCaps& caps,
const GrPipelineAnalysis&,
bool hasMixedSamples,
const DstTexture*) const override;
bool willReadDstColor(const GrCaps&, ColorType, CoverageType) const override;
GR_DECLARE_XP_FACTORY_TEST;
static void TestGetXPOutputTypes(const GrXferProcessor*, int* outPrimary, int* outSecondary);
SkBlendMode fBlendMode;
friend class GrPorterDuffTest; // for TestGetXPOutputTypes()
typedef GrXPFactory INHERITED;
};
#if defined(__GNUC__) || defined(__clang)
#pragma GCC diagnostic pop
#endif
#endif