diff options
Diffstat (limited to 'src/mbgl/programs/symbol_program.hpp')
| -rw-r--r-- | src/mbgl/programs/symbol_program.hpp | 338 |
1 files changed, 152 insertions, 186 deletions
diff --git a/src/mbgl/programs/symbol_program.hpp b/src/mbgl/programs/symbol_program.hpp index e7c428034b..a14afac702 100644 --- a/src/mbgl/programs/symbol_program.hpp +++ b/src/mbgl/programs/symbol_program.hpp @@ -7,6 +7,7 @@ #include <mbgl/programs/attributes.hpp> #include <mbgl/programs/uniforms.hpp> +#include <mbgl/programs/segment.hpp> #include <mbgl/shaders/symbol_icon.hpp> #include <mbgl/shaders/symbol_sdf.hpp> #include <mbgl/util/geometry.hpp> @@ -29,11 +30,9 @@ class RenderTile; class TransformState; namespace uniforms { -MBGL_DEFINE_UNIFORM_SCALAR(bool, u_rotate_with_map); -MBGL_DEFINE_UNIFORM_SCALAR(bool, u_pitch_with_map); +MBGL_DEFINE_UNIFORM_MATRIX(double, 4, u_gl_coord_matrix); +MBGL_DEFINE_UNIFORM_MATRIX(double, 4, u_label_plane_matrix); MBGL_DEFINE_UNIFORM_SCALAR(gl::TextureUnit, u_texture); -MBGL_DEFINE_UNIFORM_SCALAR(gl::TextureUnit, u_fadetexture); -MBGL_DEFINE_UNIFORM_SCALAR(float, u_aspect_ratio); MBGL_DEFINE_UNIFORM_SCALAR(bool, u_is_halo); MBGL_DEFINE_UNIFORM_SCALAR(float, u_gamma_scale); @@ -42,50 +41,66 @@ MBGL_DEFINE_UNIFORM_SCALAR(bool, u_is_size_zoom_constant); MBGL_DEFINE_UNIFORM_SCALAR(bool, u_is_size_feature_constant); MBGL_DEFINE_UNIFORM_SCALAR(float, u_size_t); MBGL_DEFINE_UNIFORM_SCALAR(float, u_size); -MBGL_DEFINE_UNIFORM_SCALAR(float, u_layout_size); +MBGL_DEFINE_UNIFORM_SCALAR(float, u_max_camera_distance); +MBGL_DEFINE_UNIFORM_SCALAR(bool, u_rotate_symbol); +MBGL_DEFINE_UNIFORM_SCALAR(float, u_aspect_ratio); } // namespace uniforms struct SymbolLayoutAttributes : gl::Attributes< attributes::a_pos_offset, attributes::a_data<uint16_t, 4>> { - static Vertex vertex(Point<float> a, + static Vertex vertex(Point<float> labelAnchor, Point<float> o, + float glyphOffsetY, uint16_t tx, uint16_t ty, - float minzoom, - float maxzoom, - float labelminzoom, - uint8_t labelangle) { + const Range<float>& sizeData) { return Vertex { // combining pos and offset to reduce number of vertex attributes passed to shader (8 max for some devices) {{ - static_cast<int16_t>(a.x), - static_cast<int16_t>(a.y), + static_cast<int16_t>(labelAnchor.x), + static_cast<int16_t>(labelAnchor.y), static_cast<int16_t>(::round(o.x * 64)), // use 1/64 pixels for placement - static_cast<int16_t>(::round(o.y * 64)) + static_cast<int16_t>(::round((o.y + glyphOffsetY) * 64)) }}, {{ tx, ty, - mbgl::attributes::packUint8Pair( - static_cast<uint8_t>(labelminzoom * 10), // 1/10 zoom levels: z16 == 160 - static_cast<uint8_t>(labelangle) - ), - mbgl::attributes::packUint8Pair( - static_cast<uint8_t>(minzoom * 10), - static_cast<uint8_t>(::fmin(maxzoom, 25) * 10) - ) + static_cast<uint16_t>(sizeData.min * 10), + static_cast<uint16_t>(sizeData.max * 10) }} }; } }; - -class SymbolSizeAttributes : public gl::Attributes<attributes::a_size> { -public: - using Attribute = attributes::a_size::Type; + +struct SymbolDynamicLayoutAttributes : gl::Attributes<attributes::a_projected_pos> { + static Vertex vertex(Point<float> anchorPoint, float labelAngle) { + return Vertex { + {{ + anchorPoint.x, + anchorPoint.y, + labelAngle + }} + }; + } }; +struct SymbolOpacityAttributes : gl::Attributes<attributes::a_fade_opacity> { + static Vertex vertex(bool placed, float opacity) { + return Vertex { + {{ static_cast<uint8_t>((static_cast<uint8_t>(opacity * 127) << 1) | static_cast<uint8_t>(placed)) }} + }; + } +}; + +struct ZoomEvaluatedSize { + bool isZoomConstant; + bool isFeatureConstant; + float sizeT; + float size; + float layoutSize; +}; // Mimic the PaintPropertyBinder technique specifically for the {text,icon}-size layout properties // in order to provide a 'custom' scheme for encoding the necessary attribute data. As with // PaintPropertyBinder, SymbolSizeBinder is an abstract class whose implementations handle the @@ -98,37 +113,27 @@ public: uniforms::u_is_size_zoom_constant, uniforms::u_is_size_feature_constant, uniforms::u_size_t, - uniforms::u_size, - uniforms::u_layout_size>; + uniforms::u_size>; using UniformValues = Uniforms::Values; static std::unique_ptr<SymbolSizeBinder> create(const float tileZoom, const style::DataDrivenPropertyValue<float>& sizeProperty, const float defaultValue); - virtual SymbolSizeAttributes::Bindings attributeBindings() const = 0; - virtual void populateVertexVector(const GeometryTileFeature& feature) = 0; - virtual UniformValues uniformValues(float currentZoom) const = 0; - virtual void upload(gl::Context&) = 0; -}; + virtual Range<float> getVertexSizeData(const GeometryTileFeature& feature) = 0; + virtual ZoomEvaluatedSize evaluateForZoom(float currentZoom) const = 0; -// Return the smallest range of stops that covers the interval [lowerZoom, upperZoom] -template <class Stops> -Range<float> getCoveringStops(Stops s, float lowerZoom, float upperZoom) { - assert(!s.stops.empty()); - auto minIt = s.stops.lower_bound(lowerZoom); - auto maxIt = s.stops.lower_bound(upperZoom); - - // lower_bound yields first element >= lowerZoom, but we want the *last* - // element <= lowerZoom, so if we found a stop > lowerZoom, back up by one. - if (minIt != s.stops.begin() && minIt != s.stops.end() && minIt->first > lowerZoom) { - minIt--; + UniformValues uniformValues(float currentZoom) const { + const ZoomEvaluatedSize u = evaluateForZoom(currentZoom); + return UniformValues { + uniforms::u_is_size_zoom_constant::Value{ u.isZoomConstant }, + uniforms::u_is_size_feature_constant::Value{ u.isFeatureConstant}, + uniforms::u_size_t::Value{ u.sizeT }, + uniforms::u_size::Value{ u.size } + }; } - return Range<float> { - minIt == s.stops.end() ? s.stops.rbegin()->first : minIt->first, - maxIt == s.stops.end() ? s.stops.rbegin()->first : maxIt->first - }; -} +}; + class ConstantSymbolSizeBinder final : public SymbolSizeBinder { public: @@ -139,30 +144,18 @@ public: : layoutSize(defaultValue) {} ConstantSymbolSizeBinder(const float tileZoom, const style::CameraFunction<float>& function_, const float /*defaultValue*/) - : layoutSize(function_.evaluate(tileZoom + 1)) { - function_.stops.match( - [&] (const style::ExponentialStops<float>& stops) { - const auto& zoomLevels = getCoveringStops(stops, tileZoom, tileZoom + 1); - coveringRanges = std::make_tuple( - zoomLevels, - Range<float> { function_.evaluate(zoomLevels.min), function_.evaluate(zoomLevels.max) } - ); - functionInterpolationBase = stops.base; - }, - [&] (const style::IntervalStops<float>&) { - function = function_; - } + : layoutSize(function_.evaluate(tileZoom + 1)), + function(function_) { + const Range<float> zoomLevels = function_.getCoveringStops(tileZoom, tileZoom + 1); + coveringRanges = std::make_tuple( + zoomLevels, + Range<float> { function_.evaluate(zoomLevels.min), function_.evaluate(zoomLevels.max) } ); } - SymbolSizeAttributes::Bindings attributeBindings() const override { - return SymbolSizeAttributes::Bindings { gl::DisabledAttribute() }; - } - - void upload(gl::Context&) override {} - void populateVertexVector(const GeometryTileFeature&) override {}; + Range<float> getVertexSizeData(const GeometryTileFeature&) override { return { 0.0f, 0.0f }; }; - UniformValues uniformValues(float currentZoom) const override { + ZoomEvaluatedSize evaluateForZoom(float currentZoom) const override { float size = layoutSize; bool isZoomConstant = !(coveringRanges || function); if (coveringRanges) { @@ -174,28 +167,20 @@ public: const Range<float>& zoomLevels = std::get<0>(*coveringRanges); const Range<float>& sizeLevels = std::get<1>(*coveringRanges); float t = util::clamp( - util::interpolationFactor(*functionInterpolationBase, zoomLevels, currentZoom), + function->interpolationFactor(zoomLevels, currentZoom), 0.0f, 1.0f ); size = sizeLevels.min + t * (sizeLevels.max - sizeLevels.min); } else if (function) { size = function->evaluate(currentZoom); } - - return UniformValues { - uniforms::u_is_size_zoom_constant::Value{ isZoomConstant }, - uniforms::u_is_size_feature_constant::Value{ true }, - uniforms::u_size_t::Value{ 0.0f }, // unused - uniforms::u_size::Value{ size }, - uniforms::u_layout_size::Value{ layoutSize } - }; + + const float unused = 0.0f; + return { isZoomConstant, true, unused, size, layoutSize }; } float layoutSize; - // used for exponential functions optional<std::tuple<Range<float>, Range<float>>> coveringRanges; - optional<float> functionInterpolationBase; - // used for interval functions optional<style::CameraFunction<float>> function; }; @@ -210,104 +195,51 @@ public: defaultValue(defaultValue_) { } - SymbolSizeAttributes::Bindings attributeBindings() const override { - return SymbolSizeAttributes::Bindings { SymbolSizeAttributes::Attribute::binding(*buffer, 0, 1) }; - } - - void populateVertexVector(const GeometryTileFeature& feature) override { - const auto sizeVertex = Vertex { - {{ - static_cast<uint16_t>(function.evaluate(feature, defaultValue) * 10) - }} - }; - - vertices.emplace_back(sizeVertex); - vertices.emplace_back(sizeVertex); - vertices.emplace_back(sizeVertex); - vertices.emplace_back(sizeVertex); + Range<float> getVertexSizeData(const GeometryTileFeature& feature) override { + const float size = function.evaluate(feature, defaultValue); + return { size, size }; }; - UniformValues uniformValues(float) const override { - return UniformValues { - uniforms::u_is_size_zoom_constant::Value{ true }, - uniforms::u_is_size_feature_constant::Value{ false }, - uniforms::u_size_t::Value{ 0.0f }, // unused - uniforms::u_size::Value{ 0.0f }, // unused - uniforms::u_layout_size::Value{ 0.0f } // unused - }; - } - - void upload(gl::Context& context) override { - buffer = VertexBuffer { context.createVertexBuffer(std::move(vertices)) }; + ZoomEvaluatedSize evaluateForZoom(float) const override { + const float unused = 0.0f; + return { true, false, unused, unused, unused }; } - const style::SourceFunction<float>& function; + style::SourceFunction<float> function; const float defaultValue; - - VertexVector vertices; - optional<VertexBuffer> buffer; }; class CompositeFunctionSymbolSizeBinder final : public SymbolSizeBinder { public: - using Vertex = SymbolSizeAttributes::Vertex; - using VertexVector = gl::VertexVector<Vertex>; - using VertexBuffer = gl::VertexBuffer<Vertex>; CompositeFunctionSymbolSizeBinder(const float tileZoom, const style::CompositeFunction<float>& function_, const float defaultValue_) : function(function_), defaultValue(defaultValue_), layoutZoom(tileZoom + 1), - coveringZoomStops(function.stops.match( - [&] (const auto& stops) { - return getCoveringStops(stops, tileZoom, tileZoom + 1); })) + coveringZoomStops(function.getCoveringStops(tileZoom, tileZoom + 1)) {} - SymbolSizeAttributes::Bindings attributeBindings() const override { - return SymbolSizeAttributes::Bindings { SymbolSizeAttributes::Attribute::binding(*buffer, 0) }; - } - - void populateVertexVector(const GeometryTileFeature& feature) override { - const auto sizeVertex = Vertex { - {{ - static_cast<uint16_t>(function.evaluate(coveringZoomStops.min, feature, defaultValue) * 10), - static_cast<uint16_t>(function.evaluate(coveringZoomStops.max, feature, defaultValue) * 10), - static_cast<uint16_t>(function.evaluate(layoutZoom, feature, defaultValue) * 10) - }} + Range<float> getVertexSizeData(const GeometryTileFeature& feature) override { + return { + function.evaluate(coveringZoomStops.min, feature, defaultValue), + function.evaluate(coveringZoomStops.max, feature, defaultValue) }; - - vertices.emplace_back(sizeVertex); - vertices.emplace_back(sizeVertex); - vertices.emplace_back(sizeVertex); - vertices.emplace_back(sizeVertex); }; - UniformValues uniformValues(float currentZoom) const override { + ZoomEvaluatedSize evaluateForZoom(float currentZoom) const override { float sizeInterpolationT = util::clamp( - util::interpolationFactor(1.0f, coveringZoomStops, currentZoom), + function.interpolationFactor(coveringZoomStops, currentZoom), 0.0f, 1.0f ); - return UniformValues { - uniforms::u_is_size_zoom_constant::Value{ false }, - uniforms::u_is_size_feature_constant::Value{ false }, - uniforms::u_size_t::Value{ sizeInterpolationT }, - uniforms::u_size::Value{ 0.0f }, // unused - uniforms::u_layout_size::Value{ 0.0f } // unused - }; - } - - void upload(gl::Context& context) override { - buffer = VertexBuffer { context.createVertexBuffer(std::move(vertices)) }; + const float unused = 0.0f; + return { false, false, sizeInterpolationT, unused, unused }; } - const style::CompositeFunction<float>& function; + style::CompositeFunction<float> function; const float defaultValue; float layoutZoom; Range<float> coveringZoomStops; - - VertexVector vertices; - optional<VertexBuffer> buffer; }; @@ -321,7 +253,7 @@ public: using LayoutAttributes = LayoutAttrs; using LayoutVertex = typename LayoutAttributes::Vertex; - using LayoutAndSizeAttributes = gl::ConcatenateAttributes<LayoutAttributes, SymbolSizeAttributes>; + using LayoutAndSizeAttributes = gl::ConcatenateAttributes<LayoutAttributes, gl::ConcatenateAttributes<SymbolDynamicLayoutAttributes, SymbolOpacityAttributes>>; using PaintProperties = PaintProps; using PaintPropertyBinders = typename PaintProperties::Binders; @@ -352,29 +284,49 @@ public: gl::DepthMode depthMode, gl::StencilMode stencilMode, gl::ColorMode colorMode, - UniformValues&& uniformValues, + const UniformValues& uniformValues, const gl::VertexBuffer<LayoutVertex>& layoutVertexBuffer, + const gl::VertexBuffer<SymbolDynamicLayoutAttributes::Vertex>& dynamicLayoutVertexBuffer, + const gl::VertexBuffer<SymbolOpacityAttributes::Vertex>& opacityVertexBuffer, const SymbolSizeBinder& symbolSizeBinder, const gl::IndexBuffer<DrawMode>& indexBuffer, - const gl::SegmentVector<Attributes>& segments, + const SegmentVector<Attributes>& segments, const PaintPropertyBinders& paintPropertyBinders, const typename PaintProperties::PossiblyEvaluated& currentProperties, - float currentZoom) { - program.draw( - context, - std::move(drawMode), - std::move(depthMode), - std::move(stencilMode), - std::move(colorMode), - uniformValues - .concat(symbolSizeBinder.uniformValues(currentZoom)) - .concat(paintPropertyBinders.uniformValues(currentZoom, currentProperties)), - LayoutAttributes::bindings(layoutVertexBuffer) - .concat(symbolSizeBinder.attributeBindings()) - .concat(paintPropertyBinders.attributeBindings(currentProperties)), - indexBuffer, - segments - ); + float currentZoom, + const std::string& layerID) { + typename AllUniforms::Values allUniformValues = uniformValues + .concat(symbolSizeBinder.uniformValues(currentZoom)) + .concat(paintPropertyBinders.uniformValues(currentZoom, currentProperties)); + + typename Attributes::Bindings allAttributeBindings = LayoutAttributes::bindings(layoutVertexBuffer) + .concat(SymbolDynamicLayoutAttributes::bindings(dynamicLayoutVertexBuffer)) + .concat(SymbolOpacityAttributes::bindings(opacityVertexBuffer)) + .concat(paintPropertyBinders.attributeBindings(currentProperties)); + + assert(layoutVertexBuffer.vertexCount == dynamicLayoutVertexBuffer.vertexCount && + layoutVertexBuffer.vertexCount == opacityVertexBuffer.vertexCount); + + for (auto& segment : segments) { + auto vertexArrayIt = segment.vertexArrays.find(layerID); + + if (vertexArrayIt == segment.vertexArrays.end()) { + vertexArrayIt = segment.vertexArrays.emplace(layerID, context.createVertexArray()).first; + } + + program.draw( + context, + std::move(drawMode), + std::move(depthMode), + std::move(stencilMode), + std::move(colorMode), + allUniformValues, + vertexArrayIt->second, + Attributes::offsetBindings(allAttributeBindings, segment.vertexOffset), + indexBuffer, + segment.indexOffset, + segment.indexLength); + } } }; @@ -384,13 +336,19 @@ class SymbolIconProgram : public SymbolProgram< SymbolLayoutAttributes, gl::Uniforms< uniforms::u_matrix, + uniforms::u_label_plane_matrix, + uniforms::u_gl_coord_matrix, uniforms::u_extrude_scale, uniforms::u_texsize, - uniforms::u_zoom, - uniforms::u_rotate_with_map, uniforms::u_texture, - uniforms::u_fadetexture, - uniforms::u_is_text>, + uniforms::u_fade_change, + uniforms::u_is_text, + uniforms::u_camera_to_center_distance, + uniforms::u_pitch, + uniforms::u_pitch_with_map, + uniforms::u_max_camera_distance, + uniforms::u_rotate_symbol, + uniforms::u_aspect_ratio>, style::IconPaintProperties> { public: @@ -400,8 +358,10 @@ public: const style::SymbolPropertyValues&, const Size& texsize, const std::array<float, 2>& pixelsToGLUnits, + const bool alongLine, const RenderTile&, - const TransformState&); + const TransformState&, + const float symbolFadeChange); }; enum class SymbolSDFPart { @@ -416,18 +376,20 @@ class SymbolSDFProgram : public SymbolProgram< SymbolLayoutAttributes, gl::Uniforms< uniforms::u_matrix, + uniforms::u_label_plane_matrix, + uniforms::u_gl_coord_matrix, uniforms::u_extrude_scale, uniforms::u_texsize, - uniforms::u_zoom, - uniforms::u_rotate_with_map, uniforms::u_texture, - uniforms::u_fadetexture, + uniforms::u_fade_change, uniforms::u_is_text, - uniforms::u_gamma_scale, + uniforms::u_camera_to_center_distance, uniforms::u_pitch, - uniforms::u_bearing, - uniforms::u_aspect_ratio, uniforms::u_pitch_with_map, + uniforms::u_max_camera_distance, + uniforms::u_rotate_symbol, + uniforms::u_aspect_ratio, + uniforms::u_gamma_scale, uniforms::u_is_halo>, PaintProperties> { @@ -437,18 +399,20 @@ public: SymbolLayoutAttributes, gl::Uniforms< uniforms::u_matrix, + uniforms::u_label_plane_matrix, + uniforms::u_gl_coord_matrix, uniforms::u_extrude_scale, uniforms::u_texsize, - uniforms::u_zoom, - uniforms::u_rotate_with_map, uniforms::u_texture, - uniforms::u_fadetexture, + uniforms::u_fade_change, uniforms::u_is_text, - uniforms::u_gamma_scale, + uniforms::u_camera_to_center_distance, uniforms::u_pitch, - uniforms::u_bearing, + uniforms::u_pitch_with_map, + uniforms::u_max_camera_distance, + uniforms::u_rotate_symbol, uniforms::u_aspect_ratio, - uniforms::u_pitch_with_map, + uniforms::u_gamma_scale, uniforms::u_is_halo>, PaintProperties>; @@ -462,8 +426,10 @@ public: const style::SymbolPropertyValues&, const Size& texsize, const std::array<float, 2>& pixelsToGLUnits, + const bool alongLine, const RenderTile&, const TransformState&, + const float SymbolFadeChange, const SymbolSDFPart); }; |