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| author | Søren Sandmann Pedersen <ssp@redhat.com> | 2011-09-19 09:08:33 -0400 |
|---|---|---|
| committer | Søren Sandmann Pedersen <ssp@redhat.com> | 2011-09-19 09:08:33 -0400 |
| commit | d842669a467be490bb0a40000d0c0fccea0b1b85 (patch) | |
| tree | 6e02bdc59f181362372db76078513d604142b23e | |
| parent | 3432e1a3444a55f71e294da7d350957a8e1232c3 (diff) | |
A few tweaks to a comment in pixman-combine.c.template
Include a link to
http://marc.info/?l=xfree-render&m=99792000027857&w=2
where Keith explains how the disjoint/conjoint operators work.
| -rw-r--r-- | pixman/pixman-combine.c.template | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/pixman/pixman-combine.c.template b/pixman/pixman-combine.c.template index 806a184..c17bcea 100644 --- a/pixman/pixman-combine.c.template +++ b/pixman/pixman-combine.c.template @@ -1143,9 +1143,7 @@ PDF_NON_SEPARABLE_BLEND_MODE (hsl_luminosity) #undef CH_MIN #undef PDF_NON_SEPARABLE_BLEND_MODE -/* Overlay - * - * All of the disjoint composing functions +/* All of the disjoint/conjoint composing functions * * The four entries in the first column indicate what source contributions * come from each of the four areas of the picture -- areas covered by neither @@ -1166,6 +1164,9 @@ PDF_NON_SEPARABLE_BLEND_MODE (hsl_luminosity) * (0,0,B,A) max(1-(1-b)/a,0) min(1,(1-a)/b) min(1,b/a) max(1-a/b,0) * (0,A,0,B) min(1,(1-b)/a) max(1-(1-a)/b,0) max(1-b/a,0) min(1,a/b) * (0,A,B,0) min(1,(1-b)/a) min(1,(1-a)/b) max(1-b/a,0) max(1-a/b,0) + * + * See http://marc.info/?l=xfree-render&m=99792000027857&w=2 for more + * information about these operators. */ #define COMBINE_A_OUT 1 |