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#include <mbgl/renderer/painter.hpp>
#include <mbgl/renderer/paint_parameters.hpp>
#include <mbgl/renderer/buckets/symbol_bucket.hpp>
#include <mbgl/renderer/render_tile.hpp>
#include <mbgl/renderer/layers/render_symbol_layer.hpp>
#include <mbgl/style/layers/symbol_layer_impl.hpp>
#include <mbgl/text/glyph_atlas.hpp>
#include <mbgl/programs/programs.hpp>
#include <mbgl/programs/symbol_program.hpp>
#include <mbgl/programs/collision_box_program.hpp>
#include <mbgl/util/math.hpp>
#include <mbgl/tile/geometry_tile.hpp>
#include <cmath>
namespace mbgl {
using namespace style;
void Painter::renderSymbol(PaintParameters& parameters,
SymbolBucket& bucket,
const RenderSymbolLayer& layer,
const RenderTile& tile) {
if (pass == RenderPass::Opaque) {
return;
}
const auto& layout = bucket.layout;
frameHistory.bind(context, 1);
auto draw = [&] (auto& program,
auto&& uniformValues,
const auto& buffers,
const auto& symbolSizeBinder,
const SymbolPropertyValues& values_,
const auto& binders,
const auto& paintProperties)
{
// We clip symbols to their tile extent in still mode.
const bool needsClipping = frame.mapMode == MapMode::Still;
program.get(paintProperties).draw(
context,
gl::Triangles(),
values_.pitchAlignment == AlignmentType::Map
? depthModeForSublayer(0, gl::DepthMode::ReadOnly)
: gl::DepthMode::disabled(),
needsClipping
? stencilModeForClipping(tile.clip)
: gl::StencilMode::disabled(),
colorModeForRenderPass(),
std::move(uniformValues),
*buffers.vertexBuffer,
*symbolSizeBinder,
*buffers.indexBuffer,
buffers.segments,
binders,
paintProperties,
state.getZoom()
);
};
assert(dynamic_cast<GeometryTile*>(&tile.tile));
GeometryTile& geometryTile = static_cast<GeometryTile&>(tile.tile);
if (bucket.hasIconData()) {
auto values = layer.iconPropertyValues(layout);
auto paintPropertyValues = layer.iconPaintProperties();
const bool iconScaled = layout.get<IconSize>().constantOr(1.0) != 1.0 || bucket.iconsNeedLinear;
const bool iconTransformed = values.rotationAlignment == AlignmentType::Map || state.getPitch() != 0;
context.bindTexture(*geometryTile.iconAtlasTexture, 0,
bucket.sdfIcons || state.isChanging() || iconScaled || iconTransformed
? gl::TextureFilter::Linear : gl::TextureFilter::Nearest);
const Size texsize = geometryTile.iconAtlasTexture->size;
if (bucket.sdfIcons) {
if (values.hasHalo) {
draw(parameters.programs.symbolIconSDF,
SymbolSDFIconProgram::uniformValues(false, values, texsize, pixelsToGLUnits, tile, state, SymbolSDFPart::Halo),
bucket.icon,
bucket.iconSizeBinder,
values,
bucket.paintPropertyBinders.at(layer.getID()).first,
paintPropertyValues);
}
if (values.hasFill) {
draw(parameters.programs.symbolIconSDF,
SymbolSDFIconProgram::uniformValues(false, values, texsize, pixelsToGLUnits, tile, state, SymbolSDFPart::Fill),
bucket.icon,
bucket.iconSizeBinder,
values,
bucket.paintPropertyBinders.at(layer.getID()).first,
paintPropertyValues);
}
} else {
draw(parameters.programs.symbolIcon,
SymbolIconProgram::uniformValues(false, values, texsize, pixelsToGLUnits, tile, state),
bucket.icon,
bucket.iconSizeBinder,
values,
bucket.paintPropertyBinders.at(layer.getID()).first,
paintPropertyValues);
}
}
if (bucket.hasTextData()) {
context.bindTexture(*geometryTile.glyphAtlasTexture, 0, gl::TextureFilter::Linear);
auto values = layer.textPropertyValues(layout);
auto paintPropertyValues = layer.textPaintProperties();
const Size texsize = geometryTile.glyphAtlasTexture->size;
if (values.hasHalo) {
draw(parameters.programs.symbolGlyph,
SymbolSDFTextProgram::uniformValues(true, values, texsize, pixelsToGLUnits, tile, state, SymbolSDFPart::Halo),
bucket.text,
bucket.textSizeBinder,
values,
bucket.paintPropertyBinders.at(layer.getID()).second,
paintPropertyValues);
}
if (values.hasFill) {
draw(parameters.programs.symbolGlyph,
SymbolSDFTextProgram::uniformValues(true, values, texsize, pixelsToGLUnits, tile, state, SymbolSDFPart::Fill),
bucket.text,
bucket.textSizeBinder,
values,
bucket.paintPropertyBinders.at(layer.getID()).second,
paintPropertyValues);
}
}
if (bucket.hasCollisionBoxData()) {
static const style::Properties<>::PossiblyEvaluated properties {};
static const CollisionBoxProgram::PaintPropertyBinders paintAttributeData(properties, 0);
programs->collisionBox.draw(
context,
gl::Lines { 1.0f },
gl::DepthMode::disabled(),
gl::StencilMode::disabled(),
colorModeForRenderPass(),
CollisionBoxProgram::UniformValues {
uniforms::u_matrix::Value{ tile.matrix },
uniforms::u_scale::Value{ std::pow(2.0f, float(state.getZoom() - tile.tile.id.overscaledZ)) },
uniforms::u_zoom::Value{ float(state.getZoom() * 10) },
uniforms::u_maxzoom::Value{ float((tile.id.canonical.z + 1) * 10) },
},
*bucket.collisionBox.vertexBuffer,
*bucket.collisionBox.indexBuffer,
bucket.collisionBox.segments,
paintAttributeData,
properties,
state.getZoom()
);
}
}
} // namespace mbgl
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