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#include <mbgl/renderer/painter.hpp>
#include <mbgl/renderer/paint_parameters.hpp>
#include <mbgl/renderer/line_bucket.hpp>
#include <mbgl/renderer/render_tile.hpp>
#include <mbgl/style/layers/line_layer.hpp>
#include <mbgl/style/layers/line_layer_impl.hpp>
#include <mbgl/shader/shaders.hpp>
#include <mbgl/shader/line_uniforms.hpp>
#include <mbgl/sprite/sprite_atlas.hpp>
#include <mbgl/geometry/line_atlas.hpp>
namespace mbgl {
using namespace style;
void Painter::renderLine(PaintParameters& parameters,
LineBucket& bucket,
const LineLayer& layer,
const RenderTile& tile) {
if (pass == RenderPass::Opaque) {
return;
}
const auto& properties = layer.impl->paint;
auto draw = [&] (auto& shader, auto&& uniformValues) {
context.draw({
depthModeForSublayer(0, gl::DepthMode::ReadOnly),
stencilModeForClipping(tile.clip),
colorModeForRenderPass(),
shader,
std::move(uniformValues),
gl::Segmented<gl::Triangles>(
*bucket.vertexBuffer,
*bucket.indexBuffer,
bucket.segments
)
});
};
if (!properties.lineDasharray.value.from.empty()) {
const LinePatternCap cap = bucket.layout.lineCap == LineCapType::Round
? LinePatternCap::Round : LinePatternCap::Square;
LinePatternPos posA = lineAtlas->getDashPosition(properties.lineDasharray.value.from, cap);
LinePatternPos posB = lineAtlas->getDashPosition(properties.lineDasharray.value.to, cap);
lineAtlas->bind(context, 0);
draw(parameters.shaders.lineSDF,
LineSDFUniforms::values(
properties,
frame.pixelRatio,
tile,
state,
posA,
posB,
layer.impl->dashLineWidth,
lineAtlas->getSize().width));
} else if (!properties.linePattern.value.from.empty()) {
optional<SpriteAtlasPosition> posA = spriteAtlas->getPosition(
properties.linePattern.value.from, SpritePatternMode::Repeating);
optional<SpriteAtlasPosition> posB = spriteAtlas->getPosition(
properties.linePattern.value.to, SpritePatternMode::Repeating);
if (!posA || !posB)
return;
spriteAtlas->bind(true, context, 0);
draw(parameters.shaders.linePattern,
LinePatternUniforms::values(
properties,
frame.pixelRatio,
tile,
state,
*posA,
*posB));
} else {
draw(parameters.shaders.line,
LineColorUniforms::values(
properties,
frame.pixelRatio,
tile,
state));
}
}
} // namespace mbgl
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