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#include <mbgl/renderer/render_layer.hpp>
#include <mbgl/renderer/paint_parameters.hpp>
#include <mbgl/renderer/render_source.hpp>
#include <mbgl/renderer/render_tile.hpp>
#include <mbgl/style/types.hpp>
#include <mbgl/style/layer.hpp>
#include <mbgl/tile/tile.hpp>
#include <mbgl/gfx/context.hpp>
#include <mbgl/util/logging.hpp>
namespace mbgl {
using namespace style;
RenderLayer::RenderLayer(Immutable<style::LayerProperties> properties)
: evaluatedProperties(std::move(properties)),
baseImpl(evaluatedProperties->baseImpl) {
}
void RenderLayer::transition(const TransitionParameters& parameters, Immutable<style::Layer::Impl> newImpl) {
baseImpl = std::move(newImpl);
transition(parameters);
}
bool RenderLayer::needsPlacement() const {
return baseImpl->getTypeInfo()->crossTileIndex == style::LayerTypeInfo::CrossTileIndex::Required
&& !placementData.empty();
}
const std::string& RenderLayer::getID() const {
return baseImpl->id;
}
bool RenderLayer::hasRenderPass(RenderPass pass) const {
return passes & pass;
}
bool RenderLayer::needsRendering() const {
return passes != RenderPass::None
&& baseImpl->visibility != style::VisibilityType::None;
}
bool RenderLayer::supportsZoom(float zoom) const {
// TODO: shall we use rounding or epsilon comparisons?
return baseImpl->minZoom <= zoom && baseImpl->maxZoom >= zoom;
}
void RenderLayer::prepare(const LayerPrepareParameters& params) {
assert(params.source);
assert(params.source->isEnabled());
renderTiles = params.source->getRenderTiles();
addRenderPassesFromTiles();
}
optional<Color> RenderLayer::getSolidBackground() const {
return nullopt;
}
void RenderLayer::markContextDestroyed() {
// no-op
}
void RenderLayer::checkRenderability(const PaintParameters& parameters,
const uint32_t activeBindingCount) {
// Only warn once for every layer.
if (hasRenderFailures) {
return;
}
if (activeBindingCount > parameters.context.maximumVertexBindingCount) {
Log::Error(Event::OpenGL,
"The layer '%s' uses more data-driven properties than the current device "
"supports, and will have rendering errors. To ensure compatibility with this "
"device, use %d fewer data driven properties in this layer.",
getID().c_str(),
activeBindingCount - gfx::Context::minimumRequiredVertexBindingCount);
hasRenderFailures = true;
} else if (activeBindingCount > gfx::Context::minimumRequiredVertexBindingCount) {
Log::Warning(Event::OpenGL,
"The layer '%s' uses more data-driven properties than some devices may support. "
"Though it will render correctly on this device, it may have rendering errors "
"on other devices. To ensure compatibility with all devices, use %d fewer "
"data-driven properties in this layer.",
getID().c_str(),
activeBindingCount - gfx::Context::minimumRequiredVertexBindingCount);
hasRenderFailures = true;
}
}
void RenderLayer::addRenderPassesFromTiles() {
assert(renderTiles);
for (const RenderTile& tile : *renderTiles) {
if (const LayerRenderData* renderData = tile.getLayerRenderData(*baseImpl)) {
passes |= RenderPass(renderData->layerProperties->renderPasses);
}
}
}
const LayerRenderData* RenderLayer::getRenderDataForPass(const RenderTile& tile, RenderPass pass) const {
if (const LayerRenderData* renderData = tile.getLayerRenderData(*baseImpl)) {
return bool(RenderPass(renderData->layerProperties->renderPasses) & pass) ? renderData : nullptr;
}
return nullptr;
}
} //namespace mbgl
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