1/*
2 * Copyright 2019 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#include "include/core/SkBlendMode.h"
9#include "include/gpu/GrDirectContext.h"
10#include "include/private/GrTypesPriv.h"
11#include "include/private/SkColorData.h"
12#include "src/gpu/GrBlend.h"
13#include "src/gpu/GrCaps.h"
14#include "src/gpu/GrDirectContextPriv.h"
15#include "src/gpu/GrPaint.h"
16#include "src/gpu/GrProcessorAnalysis.h"
17#include "src/gpu/GrProcessorSet.h"
18#include "src/gpu/GrUserStencilSettings.h"
19#include "src/gpu/GrXferProcessor.h"
20#include "src/gpu/effects/GrCustomXfermode.h"
21#include "tests/Test.h"
22#include "tools/gpu/GrContextFactory.h"
23
24#include <utility>
25
26DEF_GPUTEST_FOR_RENDERING_CONTEXTS(AdvancedBlendTest, reporter, ctxInfo) {
27    static constexpr auto opaque = GrProcessorAnalysisColor::Opaque::kYes;
28    static constexpr auto coverage = GrProcessorAnalysisCoverage::kSingleChannel;
29    const GrCaps& caps = *ctxInfo.directContext()->priv().caps();
30
31    for (int mode = (int)SkBlendMode::kLastMode; mode > (int)SkBlendMode::kLastCoeffMode; --mode) {
32        const SkBlendMode blendMode = (SkBlendMode)mode;
33        const GrBlendEquation blendEquation =
34                (GrBlendEquation)(mode + (kOverlay_GrBlendEquation - (int)SkBlendMode::kOverlay));
35        const GrXPFactory* xpf = GrCustomXfermode::Get(blendMode);
36
37        GrXPFactory::AnalysisProperties xpfAnalysis =
38                GrXPFactory::GetAnalysisProperties(xpf, opaque, coverage, caps, GrClampType::kAuto);
39
40        GrPaint paint;
41        paint.setXPFactory(xpf);
42        GrProcessorSet procs(std::move(paint));
43        SkPMColor4f overrideColor;
44        GrProcessorSet::Analysis processorAnalysis = procs.finalize(
45                opaque, coverage, nullptr, &GrUserStencilSettings::kUnused, caps,
46                GrClampType::kAuto, &overrideColor);
47
48        if (caps.advancedBlendEquationSupport() &&
49                !caps.isAdvancedBlendEquationDisabled(blendEquation)) {
50            REPORTER_ASSERT(reporter,
51                            !(xpfAnalysis & GrXPFactory::AnalysisProperties::kReadsDstInShader));
52            if (GrCaps::kAdvancedCoherent_BlendEquationSupport == caps.blendEquationSupport()) {
53                REPORTER_ASSERT(reporter, !processorAnalysis.requiresNonOverlappingDraws());
54            } else {
55                REPORTER_ASSERT(reporter,
56                                GrCaps::kAdvanced_BlendEquationSupport
57                                        == caps.blendEquationSupport());
58                REPORTER_ASSERT(reporter, processorAnalysis.requiresNonOverlappingDraws());
59            }
60        } else {
61            REPORTER_ASSERT(reporter,
62                            (xpfAnalysis & GrXPFactory::AnalysisProperties::kReadsDstInShader));
63            if (xpfAnalysis & GrXPFactory::AnalysisProperties::kRequiresDstTexture) {
64                REPORTER_ASSERT(reporter, processorAnalysis.requiresNonOverlappingDraws());
65            } else {
66                REPORTER_ASSERT(reporter, !processorAnalysis.requiresNonOverlappingDraws());
67            }
68        }
69    }
70}
71