diff options
| author | Thomas White <taw@physics.org> | 2010-06-28 14:02:50 +0200 |
|---|---|---|
| committer | Thomas White <taw@physics.org> | 2012-02-22 15:26:51 +0100 |
| commit | 123da4404c1766c58ed9c34122e8e8b3d75e8614 (patch) | |
| tree | 0d777869e64c52d8928666222ebb73c1b2530052 /src/render.c | |
| parent | 05a5aa64bac39b045c841fc199e73451312f2a09 (diff) | |
Work round TIFF reader lameness
Diffstat (limited to 'src/render.c')
| -rw-r--r-- | src/render.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/render.c b/src/render.c index faad77dc..9546f5cd 100644 --- a/src/render.c +++ b/src/render.c @@ -564,9 +564,12 @@ int render_tiff_int16(DisplayWindow *dw, const char *filename) val = image->data[x+(image->height-1-y)*image->width]; val *= ((float)dw->boostint/max); - /* Clamp to 16-bit range */ + /* Clamp to 16-bit range, + * and work round inability of most readers to deal + * with signed integers. */ + val += 1000.0; if ( val > 32767.0 ) val = 32767.0; - if ( val < -32768.0 ) val = -32768.0; + if ( val < 0.0 ) val = 0.0; line[x] = val; } |