forked from bartvdbraak/blender
Fix for redraw issues when making fast strokes with grab tool in sculpt mode
Join redraw rectangles from previous step and current during one stroke and reset previous rectangle when stroke is finished. This shouldn't cause problems with viewport changes during the sculpt session and this should emulate object boundbox merging for states "before step" and "after step". At leastm it's more logical because boundbox could not only grow up during stroke, but it could also shrink down.
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@ -263,6 +263,8 @@ typedef struct StrokeCache {
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int alt_smooth;
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float plane_trim_squared;
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rcti previous_r; /* previous redraw rectangle */
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} StrokeCache;
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/*** BVH Tree ***/
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@ -3403,19 +3405,19 @@ static void sculpt_flush_update(bContext *C)
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BLI_pbvh_update(ss->pbvh, PBVH_UpdateBB, NULL);
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if (sculpt_get_redraw_rect(ar, CTX_wm_region_view3d(C), ob, &r)) {
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//rcti tmp;
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r.xmin += ar->winrct.xmin + 1;
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r.xmax += ar->winrct.xmin - 1;
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r.ymin += ar->winrct.ymin + 1;
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r.ymax += ar->winrct.ymin - 1;
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//tmp = r;
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if (ss->cache) {
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rcti tmp = r;
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//if (!BLI_rcti_is_empty(&ss->previous_r))
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// BLI_union_rcti(&r, &ss->previous_r);
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if (!BLI_rcti_is_empty(&ss->cache->previous_r))
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BLI_union_rcti(&r, &ss->cache->previous_r);
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//ss->previous_r= tmp;
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ss->cache->previous_r= tmp;
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}
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ss->partial_redraw = 1;
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ED_region_tag_redraw_partial(ar, &r);
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