62 lines
2.3 KiB
C++
62 lines
2.3 KiB
C++
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/*
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* Copyright 2017 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkCanvas.h"
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#include "SkPath.h"
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#include "SkShadowTessellator.h"
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#include "SkShadowUtils.h"
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#include "Test.h"
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void tessellate_shadow(skiatest::Reporter* reporter, const SkPath& path, bool expectSuccess) {
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static constexpr SkScalar kRadius = 2.f;
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static constexpr SkColor kUmbraColor = 0xFFFFFFFF;
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static constexpr SkColor kPenumbraColor = 0x20202020;
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auto verts = SkShadowVertices::MakeAmbient(path, kRadius, kUmbraColor, kPenumbraColor, true);
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if (expectSuccess != SkToBool(verts)) {
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ERRORF(reporter, "Expected shadow tessellation to % but it did not.",
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expectSuccess ? "succeed" : "fail");
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}
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verts = SkShadowVertices::MakeAmbient(path, kRadius, kUmbraColor, kPenumbraColor, false);
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if (expectSuccess != SkToBool(verts)) {
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ERRORF(reporter, "Expected shadow tessellation to % but it did not.",
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expectSuccess ? "succeed" : "fail");
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}
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verts = SkShadowVertices::MakeSpot(path, 1.5f, {0, 0}, kRadius, kUmbraColor, kPenumbraColor,
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false);
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if (expectSuccess != SkToBool(verts)) {
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ERRORF(reporter, "Expected shadow tessellation to % but it did not.",
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expectSuccess ? "succeed" : "fail");
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}
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verts = SkShadowVertices::MakeSpot(path, 1.5f, {0, 0}, kRadius, kUmbraColor, kPenumbraColor,
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true);
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if (expectSuccess != SkToBool(verts)) {
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ERRORF(reporter, "Expected shadow tessellation to % but it did not.",
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expectSuccess ? "succeed" : "fail");
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}
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}
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DEF_TEST(ShadowUtils, reporter) {
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SkCanvas canvas(100, 100);
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// Currently SkShadowUtils doesn't really stupport cubics when compiled without SK_SUPPORT_GPU.
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// However, this should now crash.
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SkPath path;
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path.cubicTo(100, 50, 20, 100, 0, 0);
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tessellate_shadow(reporter, path, (bool)SK_SUPPORT_GPU);
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// This line segment has no area and no shadow.
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path.reset();
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path.lineTo(10.f, 10.f);
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tessellate_shadow(reporter, path, false);
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// A series of colinear line segments
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path.reset();
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for (int i = 0; i < 10; ++i) {
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path.lineTo((SkScalar)i, (SkScalar)i);
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}
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tessellate_shadow(reporter, path, false);
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}
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