// https://code.google.com/p/chromium/issues/detail?id=448299
// Giant (inverse) matrix causes overflow when converting/computing using 32.32
// Before the fix, we would assert (and then crash).
static void test_big_grad(skiatest::Reporter* reporter) {
const SkColor colors[] = { SK_ColorRED, SK_ColorBLUE };
const SkPoint pts[] = {{ 15, 14.7112684f }, { 0.709064007f, 12.6108112f }};
SkPaint paint;
paint.setShader(SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkTileMode::kClamp));
SkBitmap bm;
bm.allocN32Pixels(2000, 1);
SkCanvas c(bm);
const SkScalar affine[] = {
1.06608627e-06f, 4.26434525e-07f, 6.2855f, 2.6611f, 273.4393f, 244.0046f
};
SkMatrix matrix;
matrix.setAffine(affine);
c.concat(matrix);
c.drawPaint(paint);
}
// This test case including path coords and matrix taken from crbug.com/627443.
// Because of inaccuracies in large floating point values this causes the
// the path renderer to attempt to add a path DF to its atlas that is larger
// than the plot size which used to crash rather than fail gracefully.
static void test_far_from_origin(GrDrawContext* drawContext, GrPathRenderer* pr,
GrResourceProvider* rp) {
SkPath path;
path.lineTo(49.0255089839f, 0.473541f);
static constexpr SkScalar mvals[] = {14.0348252854f, 2.13026182736f,
13.6122547187f, 118.309922702f,
1912337682.09f, 2105391889.87f};
SkMatrix matrix;
matrix.setAffine(mvals);
SkMatrix inverse;
SkAssertResult(matrix.invert(&inverse));
path.transform(inverse);
SkStrokeRec rec(SkStrokeRec::kFill_InitStyle);
rec.setStrokeStyle(1.f);
rec.setStrokeParams(SkPaint::kRound_Cap, SkPaint::kRound_Join, 1.f);
GrStyle style(rec, nullptr);
GrShape shape(path, style);
shape = shape.applyStyle(GrStyle::Apply::kPathEffectAndStrokeRec, 1.f);
GrPaint paint;
paint.setXPFactory(GrPorterDuffXPFactory::Make(SkXfermode::kSrc_Mode));
GrNoClip noClip;
GrPathRenderer::DrawPathArgs args;
args.fPaint = &paint;
args.fUserStencilSettings = &GrUserStencilSettings::kUnused;
args.fDrawContext = drawContext;
args.fClip = &noClip;
args.fResourceProvider = rp;
args.fViewMatrix = &matrix;
args.fShape = &shape;
args.fAntiAlias = true;
args.fGammaCorrect = false;
args.fColor = 0x0;
pr->drawPath(args);
}
GrDrawVerticesOp::GrDrawVerticesOp(const Helper::MakeArgs& helperArgs, GrColor color,
sk_sp<SkVertices> vertices, const SkVertices::Bone bones[],
int boneCount, GrPrimitiveType primitiveType, GrAAType aaType,
sk_sp<GrColorSpaceXform> colorSpaceXform,
const SkMatrix& viewMatrix)
: INHERITED(ClassID())
, fHelper(helperArgs, aaType)
, fPrimitiveType(primitiveType)
, fColorSpaceXform(std::move(colorSpaceXform)) {
SkASSERT(vertices);
fVertexCount = vertices->vertexCount();
fIndexCount = vertices->indexCount();
fColorArrayType = vertices->hasColors() ? ColorArrayType::kSkColor
: ColorArrayType::kPremulGrColor;
Mesh& mesh = fMeshes.push_back();
mesh.fColor = color;
mesh.fViewMatrix = viewMatrix;
mesh.fVertices = std::move(vertices);
mesh.fIgnoreTexCoords = false;
mesh.fIgnoreColors = false;
mesh.fIgnoreBones = false;
if (mesh.fVertices->hasBones() && bones) {
// Perform the transformations on the CPU instead of the GPU.
mesh.fVertices = mesh.fVertices->applyBones(bones, boneCount);
} else {
if (bones && boneCount > 1) {
// NOTE: This should never be used. All bone transforms are being done on the CPU
// instead of the GPU.
// Copy the bone data.
fBones.assign(bones, bones + boneCount);
}
}
fFlags = 0;
if (mesh.hasPerVertexColors()) {
fFlags |= kRequiresPerVertexColors_Flag;
}
if (mesh.hasExplicitLocalCoords()) {
fFlags |= kAnyMeshHasExplicitLocalCoords_Flag;
}
if (mesh.hasBones()) {
fFlags |= kHasBones_Flag;
}
// Special case for meshes with a world transform but no bone weights.
// These will be considered normal vertices draws without bones.
if (!mesh.fVertices->hasBones() && boneCount == 1) {
SkMatrix worldTransform;
worldTransform.setAffine(bones[0].values);
mesh.fViewMatrix.preConcat(worldTransform);
}
IsZeroArea zeroArea;
if (GrIsPrimTypeLines(primitiveType) || GrPrimitiveType::kPoints == primitiveType) {
zeroArea = IsZeroArea::kYes;
} else {
zeroArea = IsZeroArea::kNo;
}
if (this->hasBones()) {
// We don't know the bounds if there are deformations involved, so attempt to calculate
// the maximum possible.
SkRect bounds = SkRect::MakeEmpty();
const SkRect originalBounds = bones[0].mapRect(mesh.fVertices->bounds());
for (int i = 1; i < boneCount; i++) {
const SkVertices::Bone& matrix = bones[i];
bounds.join(matrix.mapRect(originalBounds));
}
this->setTransformedBounds(bounds,
mesh.fViewMatrix,
HasAABloat::kNo,
zeroArea);
} else {
this->setTransformedBounds(mesh.fVertices->bounds(),
mesh.fViewMatrix,
HasAABloat::kNo,
zeroArea);
}
}