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#include <mbgl/renderer/layers/render_fill_extrusion_layer.hpp>
#include <mbgl/renderer/buckets/fill_extrusion_bucket.hpp>
#include <mbgl/renderer/render_tile.hpp>
#include <mbgl/renderer/paint_parameters.hpp>
#include <mbgl/renderer/image_manager.hpp>
#include <mbgl/renderer/render_static_data.hpp>
#include <mbgl/renderer/renderer_backend.hpp>
#include <mbgl/programs/programs.hpp>
#include <mbgl/programs/fill_extrusion_program.hpp>
#include <mbgl/tile/tile.hpp>
#include <mbgl/style/layers/fill_extrusion_layer_impl.hpp>
#include <mbgl/geometry/feature_index.hpp>
#include <mbgl/util/math.hpp>
#include <mbgl/util/intersection_tests.hpp>
namespace mbgl {
using namespace style;
RenderFillExtrusionLayer::RenderFillExtrusionLayer(Immutable<style::FillExtrusionLayer::Impl> _impl)
: RenderLayer(style::LayerType::FillExtrusion, _impl),
unevaluated(impl().paint.untransitioned()) {
}
const style::FillExtrusionLayer::Impl& RenderFillExtrusionLayer::impl() const {
return static_cast<const style::FillExtrusionLayer::Impl&>(*baseImpl);
}
std::unique_ptr<Bucket> RenderFillExtrusionLayer::createBucket(const BucketParameters& parameters, const std::vector<const RenderLayer*>& layers) const {
return std::make_unique<FillExtrusionBucket>(parameters, layers);
}
void RenderFillExtrusionLayer::transition(const TransitionParameters& parameters) {
unevaluated = impl().paint.transitioned(parameters, std::move(unevaluated));
}
void RenderFillExtrusionLayer::evaluate(const PropertyEvaluationParameters& parameters) {
evaluated = unevaluated.evaluate(parameters);
passes = (evaluated.get<style::FillExtrusionOpacity>() > 0)
? (RenderPass::Translucent | RenderPass::Pass3D)
: RenderPass::None;
}
bool RenderFillExtrusionLayer::hasTransition() const {
return unevaluated.hasTransition();
}
void RenderFillExtrusionLayer::render(PaintParameters& parameters, RenderSource*) {
if (parameters.pass == RenderPass::Opaque) {
return;
}
if (parameters.pass == RenderPass::Pass3D) {
const auto& size = parameters.staticData.backendSize;
if (!renderTexture || renderTexture->getSize() != size) {
renderTexture = OffscreenTexture(parameters.context, size, *parameters.staticData.depthRenderbuffer);
}
renderTexture->bind();
optional<float> depthClearValue = {};
if (parameters.staticData.depthRenderbuffer->needsClearing()) depthClearValue = 1.0;
// Flag the depth buffer as no longer needing to be cleared for the remainder of this pass.
parameters.staticData.depthRenderbuffer->shouldClear(false);
parameters.context.setStencilMode(gl::StencilMode::disabled());
parameters.context.clear(Color{ 0.0f, 0.0f, 0.0f, 0.0f }, depthClearValue, {});
auto draw = [&](auto& programInstance, const auto& tileBucket, auto&& uniformValues) {
const auto& paintPropertyBinders = tileBucket.paintPropertyBinders.at(getID());
const auto allUniformValues = programInstance.computeAllUniformValues(
std::move(uniformValues),
paintPropertyBinders,
evaluated,
parameters.state.getZoom()
);
const auto allAttributeBindings = programInstance.computeAllAttributeBindings(
*tileBucket.vertexBuffer,
paintPropertyBinders,
evaluated
);
checkRenderability(parameters, programInstance.activeBindingCount(allAttributeBindings));
programInstance.draw(
parameters.context,
gl::Triangles(),
parameters.depthModeFor3D(gl::DepthMode::ReadWrite),
gl::StencilMode::disabled(),
parameters.colorModeForRenderPass(),
*tileBucket.indexBuffer,
tileBucket.triangleSegments,
allUniformValues,
allAttributeBindings,
getID());
};
if (evaluated.get<FillExtrusionPattern>().from.empty()) {
for (const RenderTile& tile : renderTiles) {
assert(dynamic_cast<FillExtrusionBucket*>(tile.tile.getBucket(*baseImpl)));
FillExtrusionBucket& bucket =
*reinterpret_cast<FillExtrusionBucket*>(tile.tile.getBucket(*baseImpl));
draw(
parameters.programs.fillExtrusion.get(evaluated),
bucket,
FillExtrusionUniforms::values(
tile.translatedClipMatrix(evaluated.get<FillExtrusionTranslate>(),
evaluated.get<FillExtrusionTranslateAnchor>(),
parameters.state),
parameters.state,
parameters.evaluatedLight
)
);
}
} else {
optional<ImagePosition> imagePosA =
parameters.imageManager.getPattern(evaluated.get<FillExtrusionPattern>().from);
optional<ImagePosition> imagePosB =
parameters.imageManager.getPattern(evaluated.get<FillExtrusionPattern>().to);
if (!imagePosA || !imagePosB) {
return;
}
parameters.imageManager.bind(parameters.context, 0);
for (const RenderTile& tile : renderTiles) {
assert(dynamic_cast<FillExtrusionBucket*>(tile.tile.getBucket(*baseImpl)));
FillExtrusionBucket& bucket =
*reinterpret_cast<FillExtrusionBucket*>(tile.tile.getBucket(*baseImpl));
draw(
parameters.programs.fillExtrusionPattern.get(evaluated),
bucket,
FillExtrusionPatternUniforms::values(
tile.translatedClipMatrix(evaluated.get<FillExtrusionTranslate>(),
evaluated.get<FillExtrusionTranslateAnchor>(),
parameters.state),
parameters.imageManager.getPixelSize(), *imagePosA, *imagePosB,
evaluated.get<FillExtrusionPattern>(), tile.id, parameters.state,
-std::pow(2, tile.id.canonical.z) / util::tileSize / 8.0f,
parameters.evaluatedLight
)
);
}
}
} else if (parameters.pass == RenderPass::Translucent) {
parameters.context.bindTexture(renderTexture->getTexture());
const auto& size = parameters.staticData.backendSize;
mat4 viewportMat;
matrix::ortho(viewportMat, 0, size.width, size.height, 0, 0, 1);
const Properties<>::PossiblyEvaluated properties;
const ExtrusionTextureProgram::PaintPropertyBinders paintAttributeData{ properties, 0 };
auto& programInstance = parameters.programs.extrusionTexture;
const auto allUniformValues = programInstance.computeAllUniformValues(
ExtrusionTextureProgram::UniformValues{
uniforms::u_matrix::Value{ viewportMat }, uniforms::u_world::Value{ size },
uniforms::u_image::Value{ 0 },
uniforms::u_opacity::Value{ evaluated.get<FillExtrusionOpacity>() }
},
paintAttributeData,
properties,
parameters.state.getZoom()
);
const auto allAttributeBindings = programInstance.computeAllAttributeBindings(
parameters.staticData.extrusionTextureVertexBuffer,
paintAttributeData,
properties
);
checkRenderability(parameters, programInstance.activeBindingCount(allAttributeBindings));
programInstance.draw(
parameters.context,
gl::Triangles(),
gl::DepthMode::disabled(),
gl::StencilMode::disabled(),
parameters.colorModeForRenderPass(),
parameters.staticData.quadTriangleIndexBuffer,
parameters.staticData.extrusionTextureSegments,
allUniformValues,
allAttributeBindings,
getID());
}
}
bool RenderFillExtrusionLayer::queryIntersectsFeature(
const GeometryCoordinates& queryGeometry,
const GeometryTileFeature& feature,
const float,
const TransformState& transformState,
const float pixelsToTileUnits,
const mat4&) const {
auto translatedQueryGeometry = FeatureIndex::translateQueryGeometry(
queryGeometry,
evaluated.get<style::FillExtrusionTranslate>(),
evaluated.get<style::FillExtrusionTranslateAnchor>(),
transformState.getAngle(),
pixelsToTileUnits);
return util::polygonIntersectsMultiPolygon(translatedQueryGeometry.value_or(queryGeometry), feature.getGeometries());
}
} // namespace mbgl
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