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| author | Robin Watts <robin.watts@artifex.com> | 2018-01-04 17:53:56 +0000 |
|---|---|---|
| committer | Robin Watts <robin.watts@artifex.com> | 2018-01-04 18:01:32 +0000 |
| commit | d356025602f3f9f9a1e656bd14430cd95c059548 (patch) | |
| tree | 9da7d267e56c24f0f6d2db59b09a470c0e15444a /base/gxblend.c | |
| parent | 75f389e6b8a2f2bf15ab3044ae4e1ef185061e8d (diff) | |
| download | ghostpdl-d356025602f3f9f9a1e656bd14430cd95c059548.tar.gz | |
Tiny additional tweaks to compose groups.
Measurable differences, but only just.
Diffstat (limited to 'base/gxblend.c')
| -rw-r--r-- | base/gxblend.c | 23 |
1 files changed, 6 insertions, 17 deletions
diff --git a/base/gxblend.c b/base/gxblend.c index f3aaa44ef..e10561dae 100644 --- a/base/gxblend.c +++ b/base/gxblend.c @@ -1783,23 +1783,21 @@ compose_group_nonknockout_nonblend_isolated_allmask_common(byte *tos_ptr, bool t bool has_matte, int n_chan, bool additive, int num_spots, bool overprint, gx_color_index drawn_comps, int x0, int y0, int x1, int y1, const pdf14_nonseparable_blending_procs_t *pblend_procs, pdf14_device *pdev) { - byte *gs_restrict mask_curr_ptr = NULL; int width = x1 - x0; int x, y; int i; - byte pix_alpha, src_alpha; for (y = y1 - y0; y > 0; --y) { - mask_curr_ptr = mask_row_ptr; + byte *gs_restrict mask_curr_ptr = mask_row_ptr; for (x = 0; x < width; x++) { byte mask = mask_tr_fn[*mask_curr_ptr++]; - int tmp = alpha * mask + 0x80; - pix_alpha = (tmp + (tmp >> 8)) >> 8; - - src_alpha = tos_ptr[n_chan * tos_planestride]; + byte src_alpha = tos_ptr[n_chan * tos_planestride]; if (src_alpha != 0) { byte a_b; + int tmp = alpha * mask + 0x80; + byte pix_alpha = (tmp + (tmp >> 8)) >> 8; + if (pix_alpha != 255) { int tmp = src_alpha * pix_alpha + 0x80; src_alpha = (tmp + (tmp >> 8)) >> 8; @@ -1831,17 +1829,12 @@ compose_group_nonknockout_nonblend_isolated_allmask_common(byte *tos_ptr, bool t } } } - if (backdrop_ptr != NULL) - ++backdrop_ptr; ++tos_ptr; ++nos_ptr; } tos_ptr += tos_rowstride - width; nos_ptr += nos_rowstride - width; - if (mask_row_ptr != NULL) - mask_row_ptr += maskbuf->rowstride; - if (backdrop_ptr != NULL) - backdrop_ptr += nos_rowstride - width; + mask_row_ptr += maskbuf->rowstride; } } @@ -1925,8 +1918,6 @@ compose_group_nonknockout_nonblend_isolated_mask_common(byte *tos_ptr, bool tos_ } } } - if (backdrop_ptr != NULL) - ++backdrop_ptr; ++tos_ptr; ++nos_ptr; } @@ -1934,8 +1925,6 @@ compose_group_nonknockout_nonblend_isolated_mask_common(byte *tos_ptr, bool tos_ nos_ptr += nos_rowstride - width; if (mask_row_ptr != NULL) mask_row_ptr += maskbuf->rowstride; - if (backdrop_ptr != NULL) - backdrop_ptr += nos_rowstride - width; } } |