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Do not touch alpha values when modifying brightness or contrast.
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@3544 92316355-f0b4-4df1-b90c-862c8a59935fmaster
sam
15 years ago
1 changed files with 4 additions and 4 deletions
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-
+4 -4pipi/filter/color.c
+ 4
- 4
pipi/filter/color.c
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| @@ -70,7 +70,7 @@ pipi_image_t *pipi_brightness(pipi_image_t *src, double val) | |||||
| p = srcdata[d + 2]; | p = srcdata[d + 2]; | ||||
| dstdata[d + 2] = p < 1. - val ? p + val : 1.; | dstdata[d + 2] = p < 1. - val ? p + val : 1.; | ||||
| p = srcdata[d + 3]; | p = srcdata[d + 3]; | ||||
| dstdata[d + 3] = p < 1. - val ? p + val : 1.; | |||||
| dstdata[d + 3] = p; | |||||
| } | } | ||||
| } | } | ||||
| } | } | ||||
| @@ -98,7 +98,7 @@ pipi_image_t *pipi_brightness(pipi_image_t *src, double val) | |||||
| p = srcdata[d + 2]; | p = srcdata[d + 2]; | ||||
| dstdata[d + 2] = p > -val ? p + val : 0.; | dstdata[d + 2] = p > -val ? p + val : 0.; | ||||
| p = srcdata[d + 3]; | p = srcdata[d + 3]; | ||||
| dstdata[d + 3] = p > -val ? p + val : 0.; | |||||
| dstdata[d + 3] = p; | |||||
| } | } | ||||
| } | } | ||||
| } | } | ||||
| @@ -156,7 +156,7 @@ pipi_image_t *pipi_contrast(pipi_image_t *src, double val) | |||||
| p = (srcdata[d + 2] - 0.5) * val + 0.5; | p = (srcdata[d + 2] - 0.5) * val + 0.5; | ||||
| dstdata[d + 2] = p < 0. ? 0. : p > 1. ? 1. : p; | dstdata[d + 2] = p < 0. ? 0. : p > 1. ? 1. : p; | ||||
| p = (srcdata[d + 3] - 0.5) * val + 0.5; | p = (srcdata[d + 3] - 0.5) * val + 0.5; | ||||
| dstdata[d + 3] = p < 0. ? 0. : p > 1. ? 1. : p; | |||||
| dstdata[d + 3] = p; | |||||
| } | } | ||||
| } | } | ||||
| } | } | ||||
| @@ -189,7 +189,7 @@ pipi_image_t *pipi_contrast(pipi_image_t *src, double val) | |||||
| p = srcdata[d + 2]; | p = srcdata[d + 2]; | ||||
| dstdata[d + 2] = (p - 0.5) * val + 0.5; | dstdata[d + 2] = (p - 0.5) * val + 0.5; | ||||
| p = srcdata[d + 3]; | p = srcdata[d + 3]; | ||||
| dstdata[d + 3] = (p - 0.5) * val + 0.5; | |||||
| dstdata[d + 3] = p; | |||||
| } | } | ||||
| } | } | ||||
| } | } | ||||