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#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>
namespace mbgl {
using namespace style;
RenderRasterDEMSource::RenderRasterDEMSource(Immutable<style::RasterSource::Impl> impl_)
: RenderSource(impl_) {
tilePyramid.setObserver(this);
}
const style::RasterSource::Impl& RenderRasterDEMSource::impl() const {
return static_cast<const style::RasterSource::Impl&>(*baseImpl);
}
bool RenderRasterDEMSource::isLoaded() const {
return tilePyramid.isLoaded();
}
void RenderRasterDEMSource::update(Immutable<style::Source::Impl> baseImpl_,
const std::vector<Immutable<LayerProperties>>& layers,
const bool needsRendering,
const bool needsRelayout,
const TileParameters& parameters) {
std::swap(baseImpl, baseImpl_);
enabled = needsRendering;
optional<Tileset> _tileset = impl().getTileset();
if (tileset != _tileset) {
tileset = _tileset;
maxzoom = tileset->zoomRange.max;
// TODO: this removes existing buckets, and will cause flickering.
// Should instead refresh tile data in place.
tilePyramid.clearAll();
}
// Allow clearing the tile pyramid first, before the early return in case
// the new tileset is not yet available or has an error in loading
if (!_tileset) {
return;
}
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);
});
}
void RenderRasterDEMSource::onTileChanged(Tile& tile){
auto& 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 uint32_t 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++) {
auto 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()) {
auto& borderTile = static_cast<RasterDEMTile&>(*renderableNeighbor);
demtile.backfillBorder(borderTile, mask);
// if the border tile has not been backfilled by a previous instance of the main
// tile, backfill its corresponding neighbor as well.
const DEMTileNeighbors& borderMask = opposites[mask];
if ((borderTile.neighboringTiles & borderMask) != borderMask){
borderTile.backfillBorder(demtile, borderMask);
}
}
}
}
}
RenderSource::onTileChanged(tile);
}
void RenderRasterDEMSource::upload(gfx::UploadPass& parameters) {
tilePyramid.upload(parameters);
}
void RenderRasterDEMSource::prepare(PaintParameters& parameters) {
algorithm::updateTileMasks(tilePyramid.getRenderTiles());
tilePyramid.prepare(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 mat4&) const {
return std::unordered_map<std::string, std::vector<Feature>> {};
}
std::vector<Feature> RenderRasterDEMSource::querySourceFeatures(const SourceQueryOptions&) const {
return {};
}
void RenderRasterDEMSource::reduceMemoryUse() {
tilePyramid.reduceMemoryUse();
}
void RenderRasterDEMSource::dumpDebugLogs() const {
tilePyramid.dumpDebugLogs();
}
} // namespace mbgl
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