diff options
Diffstat (limited to 'src/mbgl/renderer/layers/render_custom_layer.cpp')
-rw-r--r-- | src/mbgl/renderer/layers/render_custom_layer.cpp | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/src/mbgl/renderer/layers/render_custom_layer.cpp b/src/mbgl/renderer/layers/render_custom_layer.cpp new file mode 100644 index 0000000000..4d6084075d --- /dev/null +++ b/src/mbgl/renderer/layers/render_custom_layer.cpp @@ -0,0 +1,76 @@ +#include <mbgl/renderer/layers/render_custom_layer.hpp> +#include <mbgl/renderer/painter.hpp> +#include <mbgl/renderer/paint_parameters.hpp> +#include <mbgl/style/layers/custom_layer_impl.hpp> +#include <mbgl/map/transform_state.hpp> +#include <mbgl/map/backend_scope.hpp> + +namespace mbgl { + +using namespace style; + +RenderCustomLayer::RenderCustomLayer(Immutable<style::CustomLayer::Impl> _impl) + : RenderLayer(LayerType::Custom, _impl) { +} + +RenderCustomLayer::~RenderCustomLayer() { + assert(BackendScope::exists()); + if (initialized && impl().deinitializeFn) { + impl().deinitializeFn(impl().context); + } +} + +const CustomLayer::Impl& RenderCustomLayer::impl() const { + return static_cast<const CustomLayer::Impl&>(*baseImpl); +} + +void RenderCustomLayer::evaluate(const PropertyEvaluationParameters&) { + passes = RenderPass::Translucent; +} + +bool RenderCustomLayer::hasTransition() const { + return false; +} + +std::unique_ptr<Bucket> RenderCustomLayer::createBucket(const BucketParameters&, const std::vector<const RenderLayer*>&) const { + assert(false); + return nullptr; +} + +void RenderCustomLayer::render(Painter& painter, PaintParameters& paintParameters, RenderSource*) { + if (!initialized) { + assert(impl().initializeFn); + impl().initializeFn(impl().context); + initialized = true; + } + + gl::Context& context = painter.context; + const TransformState& state = painter.state; + + // Reset GL state to a known state so the CustomLayer always has a clean slate. + context.vertexArrayObject = 0; + context.setDepthMode(painter.depthModeForSublayer(0, gl::DepthMode::ReadOnly)); + context.setStencilMode(gl::StencilMode::disabled()); + context.setColorMode(painter.colorModeForRenderPass()); + + CustomLayerRenderParameters parameters; + + parameters.width = state.getSize().width; + parameters.height = state.getSize().height; + parameters.latitude = state.getLatLng().latitude(); + parameters.longitude = state.getLatLng().longitude(); + parameters.zoom = state.getZoom(); + parameters.bearing = -state.getAngle() * util::RAD2DEG; + parameters.pitch = state.getPitch(); + parameters.fieldOfView = state.getFieldOfView(); + + assert(impl().renderFn); + impl().renderFn(impl().context, parameters); + + // Reset the view back to our original one, just in case the CustomLayer changed + // the viewport or Framebuffer. + paintParameters.view.bind(); + context.setDirtyState(); +} + +} // namespace mbgl |