diff options
Diffstat (limited to 'graphics/openexr/files/patch-IlmImf_ImfRgbaFile.h')
| -rw-r--r-- | graphics/openexr/files/patch-IlmImf_ImfRgbaFile.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/graphics/openexr/files/patch-IlmImf_ImfRgbaFile.h b/graphics/openexr/files/patch-IlmImf_ImfRgbaFile.h new file mode 100644 index 000000000000..8c9469aef1f9 --- /dev/null +++ b/graphics/openexr/files/patch-IlmImf_ImfRgbaFile.h @@ -0,0 +1,68 @@ +--- IlmImf/ImfRgbaFile.h.orig 2018-08-10 01:34:58 UTC ++++ IlmImf/ImfRgbaFile.h +@@ -60,6 +60,65 @@ + + OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER + ++//------------------------------------------------------- ++// Utility to compute the origin-based pointer address ++// ++// With large offsets for the data window, the naive code ++// can wrap around, especially on 32-bit machines. ++// This can be used to avoid that ++//------------------------------------------------------- ++ ++inline const Rgba * ++ComputeBasePointer ( ++ const Rgba* ptr, ++ const IMATH_NAMESPACE::V2i& origin, ++ int64_t w, ++ size_t xStride = 1, ++ size_t yStride = 0) ++{ ++ if (yStride == 0) ++ yStride = w; ++ int64_t offx = static_cast<int64_t> (origin.x); ++ offx *= xStride; ++ int64_t offy = static_cast<int64_t> (origin.y); ++ offy *= yStride; ++ return ptr - offx - offy; ++} ++ ++inline const Rgba * ++ComputeBasePointer (const Rgba* ptr, const IMATH_NAMESPACE::Box2i& dataWindow) ++{ ++ return ComputeBasePointer (ptr, dataWindow.min, ++ static_cast<int64_t> (dataWindow.max.x) - ++ static_cast<int64_t> (dataWindow.min.x) + 1); ++} ++ ++inline Rgba* ++ComputeBasePointer ( ++ Rgba* ptr, ++ const IMATH_NAMESPACE::V2i& origin, ++ int64_t w, ++ size_t xStride = 1, ++ size_t yStride = 0) ++{ ++ if (yStride == 0) ++ yStride = w; ++ int64_t offx = static_cast<int64_t> (origin.x); ++ offx *= xStride; ++ int64_t offy = static_cast<int64_t> (origin.y); ++ offy *= yStride; ++ return ptr - offx - offy; ++} ++ ++inline Rgba* ++ComputeBasePointer (Rgba* ptr, const IMATH_NAMESPACE::Box2i& dataWindow) ++{ ++ return ComputeBasePointer ( ++ ptr, ++ dataWindow.min, ++ static_cast<int64_t> (dataWindow.max.x) - ++ static_cast<int64_t> (dataWindow.min.x) + 1); ++} + + // + // RGBA output file. |