SkVertices::Sizes Struct Reference

Public Member Functions
	Sizes (const Desc &desc)
bool	isValid () const

Public Attributes
size_t	fTotal = 0
size_t	fArrays
size_t	fVSize
size_t	fTSize
size_t	fCSize
size_t	fISize
size_t	fBuilderTriFanISize

Detailed Description

Definition at line 41 of file SkVertices.cpp.

Constructor & Destructor Documentation

Sizes()

SkVertices::Sizes::Sizes ( const Desc &  desc )

inline

Definition at line 42 of file SkVertices.cpp.

                            {
        SkSafeMath safe;
 
        fVSize = safe.mul(desc.fVertexCount, sizeof(SkPoint));
        fTSize = desc.fHasTexs ? safe.mul(desc.fVertexCount, sizeof(SkPoint)) : 0;
        fCSize = desc.fHasColors ? safe.mul(desc.fVertexCount, sizeof(SkColor)) : 0;
 
        fBuilderTriFanISize = 0;
        fISize = safe.mul(desc.fIndexCount, sizeof(uint16_t));
        if (kTriangleFan_VertexMode == desc.fMode) {
            int numFanTris = 0;
            if (desc.fIndexCount) {
                fBuilderTriFanISize = fISize;
                numFanTris = desc.fIndexCount - 2;
            } else {
                numFanTris = desc.fVertexCount - 2;
                // By forcing this to become indexed we are adding a constraint to the maximum
                // number of vertices.
                if (desc.fVertexCount > (SkTo<int>(UINT16_MAX) + 1)) {
                    sk_bzero(this, sizeof(*this));
                    return;
                }
            }
            if (numFanTris <= 0) {
                sk_bzero(this, sizeof(*this));
                return;
            }
            fISize = safe.mul(numFanTris, 3 * sizeof(uint16_t));
        }
 
        fTotal = safe.add(sizeof(SkVertices),
                 safe.add(fVSize,
                 safe.add(fTSize,
                 safe.add(fCSize,
                          fISize))));
 
        if (safe.ok()) {
            fArrays = fVSize + fTSize + fCSize + fISize;  // just the sum of the arrays
        } else {
            sk_bzero(this, sizeof(*this));
        }
    }

Member Function Documentation

isValid()

bool SkVertices::Sizes::isValid ( ) const

inline

Definition at line 85 of file SkVertices.cpp.

{ return fTotal != 0; }

Member Data Documentation

fArrays

size_t SkVertices::Sizes::fArrays

Definition at line 88 of file SkVertices.cpp.

fBuilderTriFanISize

size_t SkVertices::Sizes::fBuilderTriFanISize

Definition at line 96 of file SkVertices.cpp.

fCSize

size_t SkVertices::Sizes::fCSize

Definition at line 91 of file SkVertices.cpp.

fISize

size_t SkVertices::Sizes::fISize

Definition at line 92 of file SkVertices.cpp.

fTotal

size_t SkVertices::Sizes::fTotal = 0

Definition at line 87 of file SkVertices.cpp.

fTSize

size_t SkVertices::Sizes::fTSize

Definition at line 90 of file SkVertices.cpp.

fVSize

size_t SkVertices::Sizes::fVSize

Definition at line 89 of file SkVertices.cpp.

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The documentation for this struct was generated from the following file:

• third_party/skia/src/core/SkVertices.cpp