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add difference blending mode, also fix error in last commit

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This commit is contained in:
Campbell Barton 2012-07-18 13:44:48 +00:00
parent 73a778a4d0
commit c0e004bd61
3 changed files with 12 additions and 7 deletions
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5
source/blender/blenkernel/intern/mask_rasterize.c
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@ -1235,6 +1235,9 @@ float BKE_maskrasterize_handle_sample(MaskRasterHandle *mr_handle, const float x
case MASK_BLEND_REPLACE: case MASK_BLEND_REPLACE:
value = (value * (1.0f - layer->alpha)) + (value_layer * layer->alpha); value = (value * (1.0f - layer->alpha)) + (value_layer * layer->alpha);
break; break;
case MASK_BLEND_DIFFERENCE:
value = fabsf(value - value_layer);
break;
default: /* same as add */ default: /* same as add */
BLI_assert(0); BLI_assert(0);
value += value_layer; value += value_layer;
@ -1243,7 +1246,7 @@ float BKE_maskrasterize_handle_sample(MaskRasterHandle *mr_handle, const float x
/* clamp after applying each layer so we don't get /* clamp after applying each layer so we don't get
* issues subtracting after accumulating over 1.0f */ * issues subtracting after accumulating over 1.0f */
return CLAMPIS(value, 0.0f, 1.0f); CLAMP(value, 0.0f, 1.0f);
} }
return value; return value;

1
source/blender/makesdna/DNA_mask_types.h
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@ -173,6 +173,7 @@ enum {
MASK_BLEND_DARKEN = 3, MASK_BLEND_DARKEN = 3,
MASK_BLEND_MUL = 4, MASK_BLEND_MUL = 4,
MASK_BLEND_REPLACE = 5, MASK_BLEND_REPLACE = 5,
MASK_BLEND_DIFFERENCE = 6
}; };
/* masklay->blend_flag */ /* masklay->blend_flag */

1
source/blender/makesrna/intern/rna_mask.c
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@ -585,6 +585,7 @@ static void rna_def_mask_layer(BlenderRNA *brna)
{MASK_BLEND_DARKEN, "DARKEN", 0, "Darken", ""}, {MASK_BLEND_DARKEN, "DARKEN", 0, "Darken", ""},
{MASK_BLEND_MUL, "MUL", 0, "Multiply", ""}, {MASK_BLEND_MUL, "MUL", 0, "Multiply", ""},
{MASK_BLEND_REPLACE, "REPLACE", 0, "Replace", ""}, {MASK_BLEND_REPLACE, "REPLACE", 0, "Replace", ""},
{MASK_BLEND_DIFFERENCE, "DIFFERENCE", 0, "Difference", ""},
{0, NULL, 0, NULL, NULL} {0, NULL, 0, NULL, NULL}
}; };