| … | |
… | |
| 885 | $img |
885 | $img |
| 886 | } |
886 | } |
| 887 | |
887 | |
| 888 | =item muladd $mul, $add, $img # EXPERIMENTAL |
888 | =item muladd $mul, $add, $img # EXPERIMENTAL |
| 889 | |
889 | |
| 890 | First multipliesthe pixels by C<$mul>, then adds C<$add>. This cna be used |
890 | First multiplies the pixels by C<$mul>, then adds C<$add>. This can be used |
| 891 | to implement brightness and contrast at the same time, with a wider value |
891 | to implement brightness and contrast at the same time, with a wider value |
| 892 | range than contrast and brightness operators. |
892 | range than contrast and brightness operators. |
| 893 | |
893 | |
| 894 | Due to numerous bugs in XRender implementations, it can also introduce a |
894 | Due to numerous bugs in XRender implementations, it can also introduce a |
| 895 | number of visual artifacts. |
895 | number of visual artifacts. |
