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| author | John Hawthorn <john.hawthorn@gmail.com> | 2010-01-11 13:43:19 -0800 |
|---|---|---|
| committer | John Hawthorn <john.hawthorn@gmail.com> | 2010-01-11 13:43:19 -0800 |
| commit | c4316ba892943b9cf9ba190761164472f92f627c (patch) | |
| tree | e455be278abdb7b63bda7c135051c04a4645055a | |
| parent | b63719d245db3073db51a75ba3d39cf13ccc3e28 (diff) | |
| download | mirror-meh-c4316ba892943b9cf9ba190761164472f92f627c.tar.gz mirror-meh-c4316ba892943b9cf9ba190761164472f92f627c.tar.bz2 mirror-meh-c4316ba892943b9cf9ba190761164472f92f627c.zip | |
proper alpha handling with pngs. (hardcoded white background)
| -rw-r--r-- | src/png.c | 11 |
1 files changed, 10 insertions, 1 deletions
@@ -85,7 +85,16 @@ int png_read(struct image *img){ png_set_strip_16(p->png_ptr); if (color_type == PNG_COLOR_TYPE_GRAY || color_type == PNG_COLOR_TYPE_GRAY_ALPHA) png_set_gray_to_rgb(p->png_ptr); - png_set_strip_alpha(p->png_ptr); + //png_set_strip_alpha(p->png_ptr); + + png_color_16 my_background = {.red = 0xff, .green = 0xff, .blue = 0xff}; + png_color_16p image_background; + + if(png_get_bKGD(p->png_ptr, p->info_ptr, &image_background)) + png_set_background(p->png_ptr, image_background, PNG_BACKGROUND_GAMMA_FILE, 1, 1.0); + else + png_set_background(p->png_ptr, &my_background, PNG_BACKGROUND_GAMMA_SCREEN, 2, 1.0); + if(png_get_interlace_type(p->png_ptr, p->info_ptr) == PNG_INTERLACE_ADAM7) p->numpasses = png_set_interlace_handling(p->png_ptr); else |