diff options
| -rw-r--r-- | core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp | 38 |
1 files changed, 34 insertions, 4 deletions
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp index 7ffd186f72..b54f27a4c9 100644 --- a/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp +++ b/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp @@ -662,6 +662,32 @@ struct CPDF_PatchDrawer { } } }; + +FX_BOOL _CheckCoonTensorPara(const CPDF_MeshStream &stream) +{ + FX_BOOL bCoorBits = ( stream.m_nCoordBits== 1 || + stream.m_nCoordBits == 2 || + stream.m_nCoordBits == 4 || + stream.m_nCoordBits == 8 || + stream.m_nCoordBits == 12 || + stream.m_nCoordBits == 16 || + stream.m_nCoordBits == 24 || + stream.m_nCoordBits == 32 ); + + FX_BOOL bCompBits = ( stream.m_nCompBits == 1 || + stream.m_nCompBits == 2 || + stream.m_nCompBits == 4 || + stream.m_nCompBits == 8 || + stream.m_nCompBits == 12 || + stream.m_nCompBits == 16 ); + + FX_BOOL bFlagBits = ( stream.m_nFlagBits == 2 || + stream.m_nFlagBits == 4 || + stream.m_nFlagBits == 8 ); + + return bCoorBits && bCompBits && bFlagBits; +} + static void _DrawCoonPatchMeshes(FX_BOOL bTensor, CFX_DIBitmap* pBitmap, CFX_AffineMatrix* pObject2Bitmap, CPDF_Stream* pShadingStream, CPDF_Function** pFuncs, int nFuncs, CPDF_ColorSpace* pCS, int fill_mode, int alpha) @@ -676,6 +702,11 @@ static void _DrawCoonPatchMeshes(FX_BOOL bTensor, CFX_DIBitmap* pBitmap, CFX_Aff if (!stream.Load(pShadingStream, pFuncs, nFuncs, pCS)) { return; } + + if (!_CheckCoonTensorPara(stream)) { + return; + } + CPDF_PatchDrawer patch; patch.alpha = alpha; patch.pDevice = &device; @@ -687,20 +718,19 @@ static void _DrawCoonPatchMeshes(FX_BOOL bTensor, CFX_DIBitmap* pBitmap, CFX_Aff pPoints[i].m_Flag = FXPT_BEZIERTO; } CFX_FloatPoint coords[16]; - for (int i = 0; i < 16; i ++) - { + for (int i = 0; i < 16; i ++) { coords[i].Set(0.0f, 0.0f); } int point_count = bTensor ? 16 : 12; while (!stream.m_BitStream.IsEOF()) { FX_DWORD flag = stream.GetFlag(); - int iStartPoint = 0, iStartColor = 0, i; + int iStartPoint = 0, iStartColor = 0, i = 0; if (flag) { iStartPoint = 4; iStartColor = 2; CFX_FloatPoint tempCoords[4]; - for (int i = 0; i < 4; i ++) { + for (i = 0; i < 4; i ++) { tempCoords[i] = coords[(flag * 3 + i) % 12]; } FXSYS_memcpy32(coords, tempCoords, sizeof(CFX_FloatPoint) * 4); |