diff options
Diffstat (limited to 'src/gui/painting/qdrawhelper.cpp')
| -rw-r--r-- | src/gui/painting/qdrawhelper.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/gui/painting/qdrawhelper.cpp b/src/gui/painting/qdrawhelper.cpp index 0915fb763a..dcfa3f0647 100644 --- a/src/gui/painting/qdrawhelper.cpp +++ b/src/gui/painting/qdrawhelper.cpp @@ -1945,9 +1945,10 @@ static const uint * QT_FASTCALL fetchTransformedBilinearARGB32PM(uint *buffer, c // intermediate_buffer[0] is a buffer of red-blue component of the pixel, in the form 0x00RR00BB // intermediate_buffer[1] is the alpha-green component of the pixel, in the form 0x00AA00GG + // +1 for the last pixel to interpolate with, and +1 for rounding errors. quint32 intermediate_buffer[2][buffer_size + 2]; // count is the size used in the intermediate_buffer. - int count = qCeil(length * data->m11) + 2; //+1 for the last pixel to interpolate with, and +1 for rounding errors. + int count = (qint64(length) * fdx + fixed_scale - 1) / fixed_scale + 2; Q_ASSERT(count <= buffer_size + 2); //length is supposed to be <= buffer_size and data->m11 < 1 in this case int f = 0; int lim = count; @@ -2455,12 +2456,13 @@ static const uint *QT_FASTCALL fetchTransformedBilinear(uint *buffer, const Oper // The idea is first to do the interpolation between the row s1 and the row s2 // into an intermediate buffer, then we interpolate between two pixel of this buffer. FetchPixelsFunc fetch = qFetchPixels[layout->bpp]; + // +1 for the last pixel to interpolate with, and +1 for rounding errors. uint buf1[buffer_size + 2]; uint buf2[buffer_size + 2]; const uint *ptr1; const uint *ptr2; - int count = qCeil(length * data->m11) + 2; //+1 for the last pixel to interpolate with, and +1 for rounding errors. + int count = (qint64(length) * fdx + fixed_scale - 1) / fixed_scale + 2; Q_ASSERT(count <= buffer_size + 2); //length is supposed to be <= buffer_size and data->m11 < 1 in this case if (blendType == BlendTransformedBilinearTiled) { |