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Diffstat (limited to 'Build/source/texk/dvipdfm-x/pngimage.c')
-rw-r--r--Build/source/texk/dvipdfm-x/pngimage.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/Build/source/texk/dvipdfm-x/pngimage.c b/Build/source/texk/dvipdfm-x/pngimage.c
index 609cfab7166..7ccec5b91fe 100644
--- a/Build/source/texk/dvipdfm-x/pngimage.c
+++ b/Build/source/texk/dvipdfm-x/pngimage.c
@@ -63,6 +63,8 @@
#include "pdfximage.h"
+#define DPX_PNG_DEFAULT_GAMMA 2.2
+
#define PDF_TRANS_TYPE_NONE 0
#define PDF_TRANS_TYPE_BINARY 1
#define PDF_TRANS_TYPE_ALPHA 2
@@ -668,7 +670,7 @@ create_cspace_CalRGB (png_structp png_ptr, png_infop info_ptr)
}
G = 1.0 / G; /* Gamma is inverted. */
} else {
- G = 1.0;
+ G = DPX_PNG_DEFAULT_GAMMA;
}
cal_param = make_param_Cal(PNG_COLOR_TYPE_RGB, G, xw, yw, xr, yr, xg, yg, xb, yb);
@@ -709,7 +711,7 @@ create_cspace_CalGray (png_structp png_ptr, png_infop info_ptr)
}
G = 1.0 / G; /* Gamma is inverted. */
} else {
- G = 1.0;
+ G = DPX_PNG_DEFAULT_GAMMA;
}
cal_param = make_param_Cal(PNG_COLOR_TYPE_GRAY, G, xw, yw, xr, yr, xg, yg, xb, yb);