fix bug 694618

For Separation and DeviceN colorspaces, the initial color value is 1.0
for all components instead of 0.0 as for most other colorspaces. The
current initialization in pdf_set_colorspace initializes for CMYK which
happens to work for all non-tint colorspaces.

2 files changed, 15 insertions, 0 deletions

diff --git a/source/pdf/pdf-colorspace.c b/source/pdf/pdf-colorspace.c
index 9ade1a71..611a187b 100644
--- a/source/pdf/pdf-colorspace.c
+++ b/source/pdf/pdf-colorspace.c
@@ -167,6 +167,14 @@ load_separation(pdf_document *doc, pdf_obj *array)
 	return cs;
 }
 
+int
+pdf_is_tint_colorspace(fz_colorspace *cs)
+{
+	return cs && cs->to_rgb == separation_to_rgb;
+}
+
+/* Indexed */
+
 static fz_colorspace *
 load_indexed(pdf_document *doc, pdf_obj *array)
 {
diff --git a/source/pdf/pdf-interpret.c b/source/pdf/pdf-interpret.c
index b498d54d..3790578f 100644
--- a/source/pdf/pdf-interpret.c
+++ b/source/pdf/pdf-interpret.c
@@ -1252,6 +1252,13 @@ pdf_set_colorspace(pdf_csi *csi, int what, fz_colorspace *colorspace)
 	mat->v[1] = 0;
 	mat->v[2] = 0;
 	mat->v[3] = 1;
+
+	if (pdf_is_tint_colorspace(colorspace))
+	{
+		int i;
+		for (i = 0; i < colorspace->n; i++)
+			mat->v[i] = 1.0f;
+	}
 }
 
 static void