ffaf3e30ef
The selection engine has some complex tricks that improve performance. These are: - Only draws objects whose bounding box intersects the selection threshold; - If the viewport or objects are not "dirty", it does not clean the texture IDs and only adds objects that have not yet been drawn; - Only updates the depth buffer if a new object is drawn; - Skip drawing if no object is found; These tricks were initially implemented so that this engine could be used for snapping. But this initial idea has changed and now the engine is only used to select Vertices, Edges or Faces. Due to this limited use, these tricks bring no real benefit. In fact, it's even worse with the Retopology Overlay, as it forces the Depth buffer to be redrawn. This commit removes these tricks and only keeps those that indicate whether the drawing needs to be updated. Pull Request: https://projects.blender.org/blender/blender/pulls/113308
130 lines
4.1 KiB
C++
130 lines
4.1 KiB
C++
/* SPDX-FileCopyrightText: 2016 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup draw
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*/
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#pragma once
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#include "BLI_array.hh"
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#include "BLI_sys_types.h" /* for bool and uint */
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struct ARegion;
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struct Base;
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struct Depsgraph;
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struct Object;
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struct View3D;
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struct rcti;
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struct SELECTID_ObjectData {
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DrawData dd;
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uint drawn_index;
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/* Used to avoid adding to the pass more than once. */
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bool in_pass;
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/* Used to detect and remove objects that are not included in the array. */
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bool is_drawn;
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};
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struct ObjectOffsets {
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/* For convenience only. */
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union {
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uint offset;
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uint face_start;
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};
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union {
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uint face;
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uint edge_start;
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};
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union {
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uint edge;
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uint vert_start;
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};
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uint vert;
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};
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struct SELECTID_Context {
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/* All context objects */
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blender::Array<Object *> objects;
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blender::Array<ObjectOffsets> index_offsets;
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/** Total number of element indices `index_offsets[object_drawn_len - 1].vert`. */
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uint index_drawn_len;
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short select_mode;
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/* To check for updates. */
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float persmat[4][4];
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bool is_dirty(RegionView3D *rv3d);
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};
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/* `draw_select_buffer.cc` */
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bool DRW_select_buffer_elem_get(uint sel_id, uint *r_elem, uint *r_base_index, char *r_elem_type);
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uint DRW_select_buffer_context_offset_for_object_elem(Depsgraph *depsgraph,
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Object *object,
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char elem_type);
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/**
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* Main function to read a block of pixels from the select frame buffer.
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*/
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uint *DRW_select_buffer_read(
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Depsgraph *depsgraph, ARegion *region, View3D *v3d, const rcti *rect, uint *r_buf_len);
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/**
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* \param rect: The rectangle to sample indices from (min/max inclusive).
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* \returns a #BLI_bitmap the length of \a bitmap_len or NULL on failure.
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*/
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uint *DRW_select_buffer_bitmap_from_rect(
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Depsgraph *depsgraph, ARegion *region, View3D *v3d, const rcti *rect, uint *r_bitmap_len);
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/**
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* \param center: Circle center.
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* \param radius: Circle radius.
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* \param r_bitmap_len: Number of indices in the selection id buffer.
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* \returns a #BLI_bitmap the length of \a r_bitmap_len or NULL on failure.
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*/
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uint *DRW_select_buffer_bitmap_from_circle(Depsgraph *depsgraph,
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ARegion *region,
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View3D *v3d,
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const int center[2],
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int radius,
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uint *r_bitmap_len);
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/**
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* \param poly: The polygon coordinates.
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* \param face_len: Length of the polygon.
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* \param rect: Polygon boundaries.
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* \returns a #BLI_bitmap.
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*/
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uint *DRW_select_buffer_bitmap_from_poly(Depsgraph *depsgraph,
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ARegion *region,
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View3D *v3d,
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const int poly[][2],
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int face_len,
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const rcti *rect,
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uint *r_bitmap_len);
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/**
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* Samples a single pixel.
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*/
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uint DRW_select_buffer_sample_point(Depsgraph *depsgraph,
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ARegion *region,
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View3D *v3d,
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const int center[2]);
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/**
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* Find the selection id closest to \a center.
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* \param dist: Use to initialize the distance,
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* when found, this value is set to the distance of the selection that's returned.
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*/
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uint DRW_select_buffer_find_nearest_to_point(Depsgraph *depsgraph,
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ARegion *region,
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View3D *v3d,
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const int center[2],
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uint id_min,
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uint id_max,
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uint *dist);
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void DRW_select_buffer_context_create(Depsgraph *depsgraph,
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Base **bases,
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uint bases_len,
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short select_mode);
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