1/*
2 * Copyright 2018 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/**************************************************************************************************
9 *** This file was autogenerated from GrAARectEffect.fp; do not modify.
10 **************************************************************************************************/
11#include "GrAARectEffect.h"
12#if SK_SUPPORT_GPU
13#include "glsl/GrGLSLFragmentProcessor.h"
14#include "glsl/GrGLSLFragmentShaderBuilder.h"
15#include "glsl/GrGLSLProgramBuilder.h"
16#include "GrTexture.h"
17#include "SkSLCPP.h"
18#include "SkSLUtil.h"
19class GrGLSLAARectEffect : public GrGLSLFragmentProcessor {
20public:
21    GrGLSLAARectEffect() {}
22    void emitCode(EmitArgs& args) override {
23        GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
24        const GrAARectEffect& _outer = args.fFp.cast<GrAARectEffect>();
25        (void)_outer;
26        auto edgeType = _outer.edgeType();
27        (void)edgeType;
28        auto rect = _outer.rect();
29        (void)rect;
30        prevRect = float4(-1.0);
31        fRectUniformVar = args.fUniformHandler->addUniform(
32                kFragment_GrShaderFlag, kFloat4_GrSLType, kDefault_GrSLPrecision, "rectUniform");
33        fragBuilder->codeAppendf(
34                "float4 prevRect = float4(%f, %f, %f, %f);\nhalf alpha;\n@switch (%d) {\n    case "
35                "0:\n    case 2:\n        alpha = half(all(greaterThan(float4(sk_FragCoord.xy, "
36                "%s.zw), float4(%s.xy, sk_FragCoord.xy))) ? 1 : 0);\n        break;\n    "
37                "default:\n        half xSub, ySub;\n        xSub = half(min(sk_FragCoord.x - "
38                "%s.x, 0.0));\n        xSub += half(min(%s.z - sk_FragCoord.x, 0.0));\n        "
39                "ySub = half(min(sk_FragCoord.y - %s.y, 0.0));\n        ySub += half(min(%s.w - "
40                "sk_FragCoord.y, 0.0));\n        alpha = half((1",
41                prevRect.left(),
42                prevRect.top(),
43                prevRect.right(),
44                prevRect.bottom(),
45                (int)_outer.edgeType(),
46                args.fUniformHandler->getUniformCStr(fRectUniformVar),
47                args.fUniformHandler->getUniformCStr(fRectUniformVar),
48                args.fUniformHandler->getUniformCStr(fRectUniformVar),
49                args.fUniformHandler->getUniformCStr(fRectUniformVar),
50                args.fUniformHandler->getUniformCStr(fRectUniformVar),
51                args.fUniformHandler->getUniformCStr(fRectUniformVar));
52        fragBuilder->codeAppendf(
53                ".0 + max(float(xSub), -1.0)) * (1.0 + max(float(ySub), -1.0)));\n}\n@if (%d == 2 "
54                "|| %d == 3) {\n    alpha = half(1.0 - float(alpha));\n}\n%s = %s * alpha;\n",
55                (int)_outer.edgeType(),
56                (int)_outer.edgeType(),
57                args.fOutputColor,
58                args.fInputColor ? args.fInputColor : "half4(1)");
59    }
60
61private:
62    void onSetData(const GrGLSLProgramDataManager& pdman,
63                   const GrFragmentProcessor& _proc) override {
64        const GrAARectEffect& _outer = _proc.cast<GrAARectEffect>();
65        auto edgeType = _outer.edgeType();
66        (void)edgeType;
67        auto rect = _outer.rect();
68        (void)rect;
69        UniformHandle& rectUniform = fRectUniformVar;
70        (void)rectUniform;
71
72        const SkRect& newRect = GrProcessorEdgeTypeIsAA(edgeType) ? rect.makeInset(.5f, .5f) : rect;
73        if (newRect != prevRect) {
74            pdman.set4f(rectUniform, newRect.fLeft, newRect.fTop, newRect.fRight, newRect.fBottom);
75            prevRect = newRect;
76        }
77    }
78    SkRect prevRect = float4(0);
79    UniformHandle fRectUniformVar;
80};
81GrGLSLFragmentProcessor* GrAARectEffect::onCreateGLSLInstance() const {
82    return new GrGLSLAARectEffect();
83}
84void GrAARectEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps,
85                                           GrProcessorKeyBuilder* b) const {
86    b->add32((int32_t)fEdgeType);
87}
88bool GrAARectEffect::onIsEqual(const GrFragmentProcessor& other) const {
89    const GrAARectEffect& that = other.cast<GrAARectEffect>();
90    (void)that;
91    if (fEdgeType != that.fEdgeType) return false;
92    if (fRect != that.fRect) return false;
93    return true;
94}
95GrAARectEffect::GrAARectEffect(const GrAARectEffect& src)
96        : INHERITED(kGrAARectEffect_ClassID, src.optimizationFlags())
97        , fEdgeType(src.fEdgeType)
98        , fRect(src.fRect) {}
99std::unique_ptr<GrFragmentProcessor> GrAARectEffect::clone() const {
100    return std::unique_ptr<GrFragmentProcessor>(new GrAARectEffect(*this));
101}
102GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrAARectEffect);
103#if GR_TEST_UTILS
104std::unique_ptr<GrFragmentProcessor> GrAARectEffect::TestCreate(GrProcessorTestData* d) {
105    SkRect rect = SkRect::MakeLTRB(d->fRandom->nextSScalar1(),
106                                   d->fRandom->nextSScalar1(),
107                                   d->fRandom->nextSScalar1(),
108                                   d->fRandom->nextSScalar1());
109    std::unique_ptr<GrFragmentProcessor> fp;
110    do {
111        GrClipEdgeType edgeType =
112                static_cast<GrClipEdgeType>(d->fRandom->nextULessThan(kGrClipEdgeTypeCnt));
113
114        fp = GrAARectEffect::Make(edgeType, rect);
115    } while (nullptr == fp);
116    return fp;
117}
118#endif
119#endif
120