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| author | Tavian Barnes <tavianator@gmail.com> | 2009-03-20 04:06:50 +0000 |
|---|---|---|
| committer | Tavian Barnes <tavianator@gmail.com> | 2009-03-20 04:06:50 +0000 |
| commit | c2b6e6197d2707c49ba653bac39b8b6caa039c72 (patch) | |
| tree | e8849a9d025f3b822899fcab7199cf171ebacc86 /libdimension-png | |
| parent | 047d3248896d375a8fbc80dbbf573b81a3e5a927 (diff) | |
| download | dimension-c2b6e6197d2707c49ba653bac39b8b6caa039c72.tar.xz | |
Fix color handling.
Diffstat (limited to 'libdimension-png')
| -rw-r--r-- | libdimension-png/png.c | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/libdimension-png/png.c b/libdimension-png/png.c index dbcd21a..49f1d6c 100644 --- a/libdimension-png/png.c +++ b/libdimension-png/png.c @@ -83,22 +83,28 @@ dmnsn_png_write_canvas(const dmnsn_canvas *canvas, FILE *file) pixel = canvas->pixels + (height - y - 1)*width + x; sRGB = dmnsn_sRGB_from_color(*pixel); - if (sRGB.R < 1.0) { - row[4*x] = sRGB.R*UINT16_MAX; - } else { + if (sRGB.R <= 0.0) { + row[4*x] = 0; + } else if (sRGB.R >= 1.0) { row[4*x] = UINT16_MAX; + } else { + row[4*x] = sRGB.R*UINT16_MAX; } - if (sRGB.G < 1.0) { - row[4*x + 1] = sRGB.G*UINT16_MAX; - } else { + if (sRGB.G <= 0.0) { + row[4*x + 1] = 0; + } else if (sRGB.G >= 1.0) { row[4*x + 1] = UINT16_MAX; - } - - if (sRGB.B < 1.0) { - row[4*x + 2] = sRGB.B*UINT16_MAX; } else { + row[4*x + 1] = sRGB.G*UINT16_MAX; + } + + if (sRGB.B <= 0.0) { + row[4*x + 2] = 0; + } else if (sRGB.B >= 1.0) { row[4*x + 2] = UINT16_MAX; + } else { + row[4*x + 2] = sRGB.B*UINT16_MAX; } row[4*x + 3] = (pixel->filter + pixel->trans)*UINT16_MAX; |