aceb0394ba
More vertex attribute work Move drawables above existing layer rendering. Use context for the actual draw call. Fake the vertexes in the shader to get something actually showing up. Simplify shader state management
73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
#pragma once
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#include <mbgl/util/identity.hpp>
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#include <mbgl/gfx/vertex_attribute.hpp>
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#include <cstdint>
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#include <memory>
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#include <vector>
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namespace mbgl {
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class PaintParameters;
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namespace gfx {
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class DrawableTweaker;
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class ShaderProgramBase;
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using ShaderProgramBasePtr = std::shared_ptr<ShaderProgramBase>;
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using DrawPriority = int64_t;
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using DrawableTweakerPtr = std::shared_ptr<DrawableTweaker>;
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class Drawable {
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protected:
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Drawable() {
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}
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public:
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virtual ~Drawable() = default;
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const util::SimpleIdentity& getId() const { return uniqueID; }
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/// Draw the drawable
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virtual void draw(const PaintParameters &) const = 0;
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/// Which shader to use when rendering this drawable
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const gfx::ShaderProgramBasePtr& getShader() const { return shader; }
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void setShader(gfx::ShaderProgramBasePtr value) { shader = std::move(value); }
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/// DrawPriority determines the drawing order
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DrawPriority getDrawPriority() const { return drawPriority; }
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void setDrawPriority(DrawPriority value) { drawPriority = value; }
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/// Get the vertex attributes that override default values in the shader program
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virtual const gfx::VertexAttributeArray& getVertexAttributes() const = 0;
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virtual void setVertexAttributes(const gfx::VertexAttributeArray&) = 0;
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virtual void setVertexAttributes(gfx::VertexAttributeArray&&) = 0;
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virtual std::vector<std::uint16_t>& getIndexData() const = 0;
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virtual std::vector<std::uint8_t>& getVertexData() const = 0;
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/// Attach a tweaker to be run on this drawable for each frame
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void addTweaker(DrawableTweakerPtr tweaker) { tweakers.emplace_back(std::move(tweaker)); }
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template <typename TIter>
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void addTweakers(TIter beg, TIter end) { tweakers.insert(tweakers.end(), beg, end); }
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/// Get the tweakers attached to this drawable
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std::vector<DrawableTweakerPtr> getTweakers() const { return tweakers; }
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protected:
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util::SimpleIdentity uniqueID;
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gfx::ShaderProgramBasePtr shader;
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DrawPriority drawPriority = 0;
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std::vector<DrawableTweakerPtr> tweakers;
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};
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using DrawablePtr = std::shared_ptr<Drawable>;
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} // namespace gfx
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} // namespace mbgl
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