diff options
Diffstat (limited to 'gs/base/gdevppla.c')
| -rw-r--r-- | gs/base/gdevppla.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/gs/base/gdevppla.c b/gs/base/gdevppla.c index 7d835a616..5efcbd028 100644 --- a/gs/base/gdevppla.c +++ b/gs/base/gdevppla.c @@ -84,21 +84,23 @@ static int gdev_prn_set_planar(gx_device_memory *mdev, const gx_device *tdev) { int num_comp = tdev->color_info.num_components; - gx_render_plane_t planes[4]; + gx_render_plane_t planes[GX_DEVICE_COLOR_MAX_COMPONENTS]; int depth = tdev->color_info.depth / num_comp; + int k; - if (num_comp < 1 || num_comp > 4) + if (num_comp < 1 || num_comp > GX_DEVICE_COLOR_MAX_COMPONENTS) return_error(gs_error_rangecheck); /* Round up the depth per plane to a power of 2. */ while (depth & (depth - 1)) --depth, depth = (depth | (depth >> 1)) + 1; - planes[3].depth = planes[2].depth = planes[1].depth = planes[0].depth = - depth; + /* We want the most significant plane to come out first. */ - planes[0].shift = depth * (num_comp - 1); - planes[1].shift = planes[0].shift - depth; - planes[2].shift = planes[1].shift - depth; - planes[3].shift = 0; + planes[num_comp-1].shift = 0; + planes[num_comp-1].depth = depth; + for (k = (num_comp - 2); k >= 0; k--) { + planes[k].depth = depth; + planes[k].shift = planes[k + 1].shift + depth; + } return gdev_mem_set_planar(mdev, num_comp, planes); } |