forked from bartvdbraak/blender
Fix weight paint Blur, Smear and Average breakage in multi-paint mode.
This is most pronounced in Auto-Normalize + Multi-Paint. Unlike vertex paint, the weights being painted on in weight paint mode don't necessarily correspond to the weight actually stored in any one vertex group, and may instead be a computed aggregate. This restores original code behavior lost in rB4f616c93f7cb.
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@ -1362,6 +1362,20 @@ static void get_brush_alpha_data(
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(BKE_brush_use_alpha_pressure(scene, brush) ? ss->cache->pressure : 1.0f);
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}
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static float wpaint_get_active_weight(const MDeformVert *dv, const WeightPaintInfo *wpi)
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{
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if (wpi->do_multipaint) {
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float weight = BKE_defvert_multipaint_collective_weight(
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dv, wpi->defbase_tot, wpi->defbase_sel, wpi->defbase_tot_sel, wpi->do_auto_normalize);
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CLAMP(weight, 0.0f, 1.0f);
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return weight;
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}
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else {
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return defvert_find_weight(dv, wpi->active.index);
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}
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}
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static void do_wpaint_brush_blur_task_cb_ex(
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void *userdata, void *UNUSED(userdata_chunk), const int n, const int UNUSED(thread_id))
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{
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@ -1408,7 +1422,7 @@ static void do_wpaint_brush_blur_task_cb_ex(
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const int l_index = mp->loopstart + k;
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const MLoop *ml = &data->me->mloop[l_index];
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const MDeformVert *dv = &data->me->dvert[ml->v];
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weight_final += defvert_find_weight(dv, data->wpi->active.index);
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weight_final += wpaint_get_active_weight(dv, data->wpi);
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}
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}
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@ -1512,7 +1526,7 @@ static void do_wpaint_brush_smear_task_cb_ex(
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if (stroke_dot > stroke_dot_max) {
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stroke_dot_max = stroke_dot;
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MDeformVert *dv = &data->me->dvert[v_other_index];
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weight_final = defvert_find_weight(dv, data->wpi->active.index);
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weight_final = wpaint_get_active_weight(dv, data->wpi);
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do_color = true;
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}
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}
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@ -1645,7 +1659,7 @@ static void do_wpaint_brush_calc_average_weight_cb_ex(
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if (!(use_face_sel || use_vert_sel) || v_flag & SELECT) {
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const MDeformVert *dv = &data->me->dvert[v_index];
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accum->len += 1;
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accum->value += defvert_find_weight(dv, data->wpi->active.index);
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accum->value += wpaint_get_active_weight(dv, data->wpi);
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}
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}
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}
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