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Fix T61733: wrong alpha for sequencer screen, multiply, .. blend modes.

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It was copying the alpha from the foreground instead of background image,
which is not usually what is needed and inconsistent with the compositor.

Differential Revision: https://developer.blender.org/D4371
This commit is contained in:
John Quillan
2019-02-21 13:26:22 +01:00
committed by Brecht Van Lommel
parent 6e9dca2214
commit fdee84fd56
1 changed files with 16 additions and 16 deletions
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32
source/blender/blenkernel/intern/seqeffects.c
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@@ -1318,11 +1318,11 @@ BLI_INLINE void apply_blend_function_byte(
rt = out;
while (y--) {
for (x = xo; x > 0; x--) {
achannel = rt2[3];
rt2[3] = (unsigned int) achannel * facf0;
achannel = rt1[3];
rt1[3] = (unsigned int) achannel * facf0;
blend_function(rt, rt1, rt2);
rt2[3] = achannel;
rt[3] = rt2[3];
rt1[3] = achannel;
rt[3] = rt1[3];
rt1 += 4;
rt2 += 4;
rt += 4;
@@ -1332,11 +1332,11 @@ BLI_INLINE void apply_blend_function_byte(
}
y--;
for (x = xo; x > 0; x--) {
achannel = rt2[3];
rt2[3] = (unsigned int) achannel * facf1;
achannel = rt1[3];
rt1[3] = (unsigned int) achannel * facf1;
blend_function(rt, rt1, rt2);
rt2[3] = achannel;
rt[3] = rt2[3];
rt1[3] = achannel;
rt[3] = rt1[3];
rt1 += 4;
rt2 += 4;
rt += 4;
@@ -1357,11 +1357,11 @@ BLI_INLINE void apply_blend_function_float(
rt = out;
while (y--) {
for (x = xo; x > 0; x--) {
achannel = rt2[3];
rt2[3] = achannel * facf0;
achannel = rt1[3];
rt1[3] = achannel * facf0;
blend_function(rt, rt1, rt2);
rt2[3] = achannel;
rt[3] = rt2[3];
rt1[3] = achannel;
rt[3] = rt1[3];
rt1 += 4;
rt2 += 4;
rt += 4;
@@ -1371,11 +1371,11 @@ BLI_INLINE void apply_blend_function_float(
}
y--;
for (x = xo; x > 0; x--) {
achannel = rt2[3];
rt2[3] = achannel * facf1;
achannel = rt1[3];
rt1[3] = achannel * facf1;
blend_function(rt, rt1, rt2);
rt2[3] = achannel;
rt[3] = rt2[3];
rt1[3] = achannel;
rt[3] = rt1[3];
rt1 += 4;
rt2 += 4;
rt += 4;