26     void* fPtr;  member
29     GrVertexWriter(void* ptr) : fPtr(ptr) {}  in GrVertexWriter()
35         fPtr = that.fPtr;
36         that.fPtr = nullptr;
40     bool operator==(const GrVertexWriter& that) const { return fPtr == that.fPtr; }
41     operator bool() const { return fPtr != nullptr; }
44         return {SkTAddOffset<void>(fPtr, offsetInBytes)};  in makeOffset()
74         memcpy(fPtr, &val, sizeof(T));  in write()
75         fPtr = SkTAddOffset<void>(fPtr, sizeof(T));  in write()
83         memcpy(fPtr, val, N * sizeof(T));  in write()
84         fPtr = SkTAddOffset<void>(fPtr, N * sizeof(T));  in write()
109         fPtr = SkTAddOffset<void>(fPtr, sizeof(T));  in write()
125         memcpy(fPtr, array, count * sizeof(T));  in writeArray()
126         fPtr = SkTAddOffset<void>(fPtr, count * sizeof(T));  in writeArray()
137         memcpy(fPtr, data, size);  in writeRaw()
138         fPtr = SkTAddOffset<void>(fPtr, size);  in writeRaw()