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Bug fix #2104

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When using Sequencer for Alpha-Over images, it was assuming "Key" alpha by
default, and converting images to "Premul" (= multiplying RGB with alpha).
This isn't very nice, also because alpha generated by MBlur in Blender
always is of type Premul already.

Solution; make this an option. In the Nkey panel for strips you can set
or disable Premul now. As extra also added the "Filter" and "Mul" options,
as already there for Movie strips. Can easily be extended to more options
for various postprocess effects.
This commit is contained in:
Ton Roosendaal
2005-01-07 18:07:13 +00:00
parent ac82b48380
commit 3e38a951dd
4 changed files with 31 additions and 15 deletions
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11
source/blender/src/sequence.c
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@@ -1899,9 +1899,14 @@ void do_build_seqar_cfra(ListBase *seqbase, Sequence ***seqar, int cfra)
if(se->ibuf==0) se->ok= 0;
else {
if(se->ibuf->depth==32 && se->ibuf->zbuf==0) converttopremul(se->ibuf);
if(seq->flag & SEQ_MAKE_PREMUL) {
if(se->ibuf->depth==32 && se->ibuf->zbuf==0) converttopremul(se->ibuf);
}
seq->strip->orx= se->ibuf->x;
seq->strip->ory= se->ibuf->y;
if(seq->flag & SEQ_FILTERY) IMB_filtery(se->ibuf);
if(seq->mul==0.0) seq->mul= 1.0;
if(seq->mul != 1.0) multibuf(se->ibuf, seq->mul);
}
}
}
@@ -1924,7 +1929,9 @@ void do_build_seqar_cfra(ListBase *seqbase, Sequence ***seqar, int cfra)
if(se->ibuf==0) se->ok= 0;
else {
if(se->ibuf->depth==32) converttopremul(se->ibuf);
if(seq->flag & SEQ_MAKE_PREMUL) {
if(se->ibuf->depth==32) converttopremul(se->ibuf);
}
seq->strip->orx= se->ibuf->x;
seq->strip->ory= se->ibuf->y;
if(seq->flag & SEQ_FILTERY) IMB_filtery(se->ibuf);