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- /*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #ifndef GrTestUtils_DEFINED
- #define GrTestUtils_DEFINED
- #include "include/core/SkTypes.h"
- #if GR_TEST_UTILS
- #include "include/core/SkPathEffect.h"
- #include "include/core/SkStrokeRec.h"
- #include "include/gpu/GrSamplerState.h"
- #include "include/private/SkMacros.h"
- #include "include/private/SkTemplates.h"
- #include "include/utils/SkRandom.h"
- #include "src/gpu/GrColor.h"
- #include "src/gpu/GrFPArgs.h"
- #include "src/shaders/SkShaderBase.h"
- class GrColorSpaceInfo;
- class GrColorSpaceXform;
- struct GrProcessorTestData;
- class GrStyle;
- class SkMatrix;
- class SkPath;
- class SkRRect;
- struct SkRect;
- namespace GrTest {
- /**
- * Helpers for use in Test functions.
- */
- const SkMatrix& TestMatrix(SkRandom*);
- const SkMatrix& TestMatrixPreservesRightAngles(SkRandom*);
- const SkMatrix& TestMatrixRectStaysRect(SkRandom*);
- const SkMatrix& TestMatrixInvertible(SkRandom*);
- const SkMatrix& TestMatrixPerspective(SkRandom*);
- void TestWrapModes(SkRandom*, GrSamplerState::WrapMode[2]);
- const SkRect& TestRect(SkRandom*);
- const SkRect& TestSquare(SkRandom*);
- const SkRRect& TestRRectSimple(SkRandom*);
- const SkPath& TestPath(SkRandom*);
- const SkPath& TestPathConvex(SkRandom*);
- SkStrokeRec TestStrokeRec(SkRandom*);
- /** Creates styles with dash path effects and null path effects */
- void TestStyle(SkRandom*, GrStyle*);
- sk_sp<SkColorSpace> TestColorSpace(SkRandom*);
- sk_sp<GrColorSpaceXform> TestColorXform(SkRandom*);
- class TestAsFPArgs {
- public:
- TestAsFPArgs(GrProcessorTestData*);
- ~TestAsFPArgs();
- const GrFPArgs& args() const { return fArgs; }
- private:
- SkMatrix fViewMatrixStorage;
- std::unique_ptr<GrColorSpaceInfo> fColorSpaceInfoStorage;
- GrFPArgs fArgs;
- };
- // We have a simplified dash path effect here to avoid relying on SkDashPathEffect which
- // is in the optional build target effects.
- class TestDashPathEffect : public SkPathEffect {
- public:
- static sk_sp<SkPathEffect> Make(const SkScalar* intervals, int count, SkScalar phase) {
- return sk_sp<SkPathEffect>(new TestDashPathEffect(intervals, count, phase));
- }
- Factory getFactory() const override { return nullptr; }
- const char* getTypeName() const override { return nullptr; }
- protected:
- bool onFilterPath(SkPath* dst, const SkPath&, SkStrokeRec* , const SkRect*) const override;
- DashType onAsADash(DashInfo* info) const override;
- private:
- TestDashPathEffect(const SkScalar* intervals, int count, SkScalar phase);
- int fCount;
- SkAutoTArray<SkScalar> fIntervals;
- SkScalar fPhase;
- SkScalar fInitialDashLength;
- int fInitialDashIndex;
- SkScalar fIntervalLength;
- };
- } // namespace GrTest
- static inline GrColor GrRandomColor(SkRandom* random) {
- // There are only a few cases of random colors which interest us
- enum ColorMode {
- kAllOnes_ColorMode,
- kAllZeros_ColorMode,
- kAlphaOne_ColorMode,
- kRandom_ColorMode,
- kLast_ColorMode = kRandom_ColorMode
- };
- ColorMode colorMode = ColorMode(random->nextULessThan(kLast_ColorMode + 1));
- GrColor color SK_INIT_TO_AVOID_WARNING;
- switch (colorMode) {
- case kAllOnes_ColorMode:
- color = GrColorPackRGBA(0xFF, 0xFF, 0xFF, 0xFF);
- break;
- case kAllZeros_ColorMode:
- color = GrColorPackRGBA(0, 0, 0, 0);
- break;
- case kAlphaOne_ColorMode:
- color = GrColorPackRGBA(random->nextULessThan(256),
- random->nextULessThan(256),
- random->nextULessThan(256),
- 0xFF);
- break;
- case kRandom_ColorMode: {
- uint8_t alpha = random->nextULessThan(256);
- color = GrColorPackRGBA(random->nextRangeU(0, alpha),
- random->nextRangeU(0, alpha),
- random->nextRangeU(0, alpha),
- alpha);
- break;
- }
- }
- return color;
- }
- static inline uint8_t GrRandomCoverage(SkRandom* random) {
- enum CoverageMode {
- kZero_CoverageMode,
- kAllOnes_CoverageMode,
- kRandom_CoverageMode,
- kLast_CoverageMode = kRandom_CoverageMode
- };
- CoverageMode colorMode = CoverageMode(random->nextULessThan(kLast_CoverageMode + 1));
- uint8_t coverage SK_INIT_TO_AVOID_WARNING;
- switch (colorMode) {
- case kZero_CoverageMode:
- coverage = 0;
- break;
- case kAllOnes_CoverageMode:
- coverage = 0xff;
- break;
- case kRandom_CoverageMode:
- coverage = random->nextULessThan(256);
- break;
- }
- return coverage;
- }
- #endif
- #endif
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