PrimitiveTessellator.h

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#pragma once
 
#include "graphics/PrimitiveDrawList.h"
 
#include <glm/glm.hpp>
 
#include <cstddef>
#include <cstdint>
#include <vector>
 
namespace eve::graphics {
 
struct PrimitiveTriangleVertex {
    glm::vec4     clipPosition{0.f};
    Color         color{1.f, 1.f, 1.f, 1.f};
    float         pathDistance   = 0.f;
    float         edgeCoordinate = 0.f;
    std::uint32_t commandIndex   = 0;
};
 
struct ResolvedPrimitiveBatch3D {
    std::size_t         firstVertex = 0;
    std::size_t         vertexCount = 0;
    ScenePrimitivePaint paint;
    float               averageDepth = 0.f;
    std::size_t         sequence     = 0;
};
 
struct ResolvedPrimitiveBatch2D {
    std::size_t firstVertex = 0;
    std::size_t vertexCount = 0;
    BlendMode   blend       = BlendMode::Alpha;
    std::size_t sequence    = 0;
};
 
struct ResolvedPrimitiveTriangles {
    std::vector<PrimitiveTriangleVertex>  vertices;
    std::vector<ResolvedPrimitiveBatch2D> batches2D;
    std::vector<ResolvedPrimitiveBatch3D> batches3D;
    PrimitiveDrawStatistics               statistics;
};
 
[[nodiscard]] EVENGINE_API_BACKENDS ResolvedPrimitiveTriangles
resolvePrimitiveStrokes2D(const PrimitiveCanvas2D& canvas, glm::ivec2 viewport);
 
[[nodiscard]] EVENGINE_API_BACKENDS ResolvedPrimitiveTriangles
resolvePrimitiveStrokes3D(const PrimitiveSceneCanvas3D& canvas);
 
}  // namespace eve::graphics