1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
#include <mbgl/renderer/sources/render_raster_dem_source.hpp>
#include <mbgl/renderer/render_tile.hpp>
#include <mbgl/tile/raster_dem_tile.hpp>
#include <mbgl/algorithm/update_tile_masks.hpp>
#include <mbgl/geometry/dem_data.hpp>
#include <mbgl/renderer/buckets/hillshade_bucket.hpp>
#include <iostream>
namespace mbgl {
using namespace style;
RenderRasterDEMSource::RenderRasterDEMSource(Immutable<style::RasterDEMSource::Impl> impl_)
: RenderSource(impl_) {
tilePyramid.setObserver(this);
}
const style::RasterDEMSource::Impl& RenderRasterDEMSource::impl() const {
return static_cast<const style::RasterDEMSource::Impl&>(*baseImpl);
}
bool RenderRasterDEMSource::isLoaded() const {
return tilePyramid.isLoaded();
}
void RenderRasterDEMSource::update(Immutable<style::Source::Impl> baseImpl_,
const std::vector<Immutable<Layer::Impl>>& layers,
const bool needsRendering,
const bool needsRelayout,
const TileParameters& parameters) {
std::swap(baseImpl, baseImpl_);
enabled = needsRendering;
optional<Tileset> tileset = impl().getTileset();
if (!tileset) {
return;
}
if (tileURLTemplates != tileset->tiles) {
tileURLTemplates = tileset->tiles;
// TODO: this removes existing buckets, and will cause flickering.
// Should instead refresh tile data in place.
tilePyramid.tiles.clear();
tilePyramid.renderTiles.clear();
tilePyramid.cache.clear();
}
tilePyramid.update(layers,
needsRendering,
needsRelayout,
parameters,
SourceType::RasterDEM,
impl().getTileSize(),
tileset->zoomRange,
tileset->bounds,
[&] (const OverscaledTileID& tileID) {
return std::make_unique<RasterDEMTile>(tileID, parameters, *tileset);
});
}
static void fillBorder(RasterDEMTile& tile, const RasterDEMTile& borderTile, const DEMTileNeighbors mask ){
int dx = borderTile.id.canonical.x - tile.id.canonical.x;
const int8_t dy = borderTile.id.canonical.y - tile.id.canonical.y;
const uint32_t dim = pow(2, tile.id.canonical.z);
if (dx == 0 && dy == 0) return;
if (std::abs(dy) > 1) return;
// neighbor is in another world wrap
if (std::abs(dx) > 1) {
if (std::abs(int(dx + dim)) == 1) {
dx += dim;
} else if (std::abs(int(dx - dim)) == 1) {
dx -= dim;
}
}
HillshadeBucket* borderBucket = borderTile.getBucket();
HillshadeBucket* tileBucket = tile.getBucket();
DEMData& tileDEM = tileBucket->getDEMData();
DEMData& borderDEM = borderBucket->getDEMData();
if (tileDEM.isLoaded() && borderDEM.isLoaded()){
tileDEM.backfillBorder(borderDEM, dx, dy);
// update the bitmask to indicate that this tiles have been backfilled by flipping the relevant bit
tile.neighboringTiles = tile.neighboringTiles | mask;
// mark HillshadeBucket.prepared as false so it runs through the prepare render pass
// with the new texture data we just backfilled
tileBucket->prepared = false;
}
}
void RenderRasterDEMSource::onTileChanged(Tile& tile){
RasterDEMTile& demtile = static_cast<RasterDEMTile&>(tile);
std::map<DEMTileNeighbors, DEMTileNeighbors> opposites = {
{ DEMTileNeighbors::Left, DEMTileNeighbors::Right },
{ DEMTileNeighbors::Right, DEMTileNeighbors::Left },
{ DEMTileNeighbors::TopLeft, DEMTileNeighbors::BottomRight },
{ DEMTileNeighbors::TopCenter, DEMTileNeighbors::BottomCenter },
{ DEMTileNeighbors::TopRight, DEMTileNeighbors::BottomLeft },
{ DEMTileNeighbors::BottomRight, DEMTileNeighbors::TopLeft },
{ DEMTileNeighbors::BottomCenter, DEMTileNeighbors:: TopCenter },
{ DEMTileNeighbors::BottomLeft, DEMTileNeighbors::TopRight }
};
if (tile.isRenderable() && demtile.neighboringTiles != DEMTileNeighbors::Complete) {
const CanonicalTileID canonical = tile.id.canonical;
const uint dim = std::pow(2, canonical.z);
const uint32_t px = (canonical.x - 1 + dim) % dim;
const int pxw = canonical.x == 0 ? tile.id.wrap - 1 : tile.id.wrap;
const uint32_t nx = (canonical.x + 1 + dim) % dim;
const int nxw = (canonical.x + 1 == dim) ? tile.id.wrap + 1 : tile.id.wrap;
auto getNeighbor = [&] (DEMTileNeighbors mask){
if (mask == DEMTileNeighbors::Left){
return OverscaledTileID(tile.id.overscaledZ, pxw, canonical.z, px, canonical.y);
} else if (mask == DEMTileNeighbors::Right){
return OverscaledTileID(tile.id.overscaledZ, nxw, canonical.z, nx, canonical.y);
} else if (mask == DEMTileNeighbors::TopLeft){
return OverscaledTileID(tile.id.overscaledZ, pxw, canonical.z, px, canonical.y - 1);
} else if (mask == DEMTileNeighbors::TopCenter){
return OverscaledTileID(tile.id.overscaledZ, tile.id.wrap, canonical.z, canonical.x, canonical.y - 1);
} else if (mask == DEMTileNeighbors::TopRight){
return OverscaledTileID(tile.id.overscaledZ, nxw, canonical.z, nx, canonical.y - 1);
} else if (mask == DEMTileNeighbors::BottomLeft){
return OverscaledTileID(tile.id.overscaledZ, pxw, canonical.z, px, canonical.y + 1);
} else if (mask == DEMTileNeighbors::BottomCenter){
return OverscaledTileID(tile.id.overscaledZ, tile.id.wrap, canonical.z, canonical.x, canonical.y + 1);
} else if (mask == DEMTileNeighbors::BottomRight){
return OverscaledTileID(tile.id.overscaledZ, nxw, canonical.z, nx, canonical.y + 1);
} else{
throw std::runtime_error("mask is not a valid tile neighbor");
}
};
for (uint8_t i = 0; i < 8; i++) {
DEMTileNeighbors mask = DEMTileNeighbors(std::pow(2,i));
// only backfill if this neighbor has not been previously backfilled
if ((demtile.neighboringTiles & mask) != mask) {
OverscaledTileID neighborid = getNeighbor(mask);
Tile* renderableNeighbor = tilePyramid.getTile(neighborid);
if (renderableNeighbor != nullptr && renderableNeighbor->isRenderable()) {
RasterDEMTile& borderTile = static_cast<RasterDEMTile&>(*renderableNeighbor);
fillBorder(demtile, borderTile, mask);
fillBorder(borderTile, demtile, opposites[mask]);
}
}
}
}
RenderSource::onTileChanged(tile);
}
void RenderRasterDEMSource::startRender(PaintParameters& parameters) {
algorithm::updateTileMasks(tilePyramid.getRenderTiles());
tilePyramid.startRender(parameters);
}
void RenderRasterDEMSource::finishRender(PaintParameters& parameters) {
tilePyramid.finishRender(parameters);
}
std::vector<std::reference_wrapper<RenderTile>> RenderRasterDEMSource::getRenderTiles() {
return tilePyramid.getRenderTiles();
}
std::unordered_map<std::string, std::vector<Feature>>
RenderRasterDEMSource::queryRenderedFeatures(const ScreenLineString&,
const TransformState&,
const std::vector<const RenderLayer*>&,
const RenderedQueryOptions&,
const CollisionIndex& ) const {
return std::unordered_map<std::string, std::vector<Feature>> {};
}
std::vector<Feature> RenderRasterDEMSource::querySourceFeatures(const SourceQueryOptions&) const {
return {};
}
void RenderRasterDEMSource::onLowMemory() {
tilePyramid.onLowMemory();
}
void RenderRasterDEMSource::dumpDebugLogs() const {
tilePyramid.dumpDebugLogs();
}
} // namespace mbgl
|
