diff options
| -rw-r--r-- | gs/base/gxiscale.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/gs/base/gxiscale.c b/gs/base/gxiscale.c index f7db9b241..2704d34d0 100644 --- a/gs/base/gxiscale.c +++ b/gs/base/gxiscale.c @@ -770,9 +770,19 @@ image_render_interpolate_icc(gx_image_enum * penum, const byte * buffer, if (pcs->type->index != gs_color_space_index_Indexed) { /* An issue here is that we may not be "device color" due to how the data is encoded. Need to check for that case here */ - if ((penum->device_color || - gs_color_space_is_CIE(pcs) || - islab) && (penum->icc_setup.need_decode == 0)) { + /* Decide here if we need to decode or not. Essentially, as + * far as I can gather, we use the top case if we DON'T need + * to decode. This is fairly obviously conditional on + * need_decode being set to 0. The major exception to this is + * that if the colorspace is CIE, we interpolate, THEN decode, + * so the decode is done later in the pipeline, so we needn't + * decode here (see Bugs 692225 and 692331). */ + /* It is possible that islab should be moved out of conjuction + * with need_decode below, but in the absence of a test file, + * I'm leaving it where it is. */ + if (((penum->device_color || islab) && + (penum->icc_setup.need_decode == 0)) || + gs_color_space_is_CIE(pcs)) { /* 8-bit color values, possibly device indep. or device depend., not indexed. Decode range was [0 1] */ if (penum->matrix.xx >= 0) { |