metaforce/Runtime/Graphics/CLineRenderer.hpp

#pragma once

#include <array>

#include "Runtime/RetroTypes.hpp"
#include "Runtime/rstl.hpp"
#include "Runtime/Graphics/CGraphics.hpp"

#include <boo/graphicsdev/IGraphicsDataFactory.hpp>

#include <hecl/UniformBufferPool.hpp>
#include <hecl/VertexBufferPool.hpp>

#include <zeus/CColor.hpp>
#include <zeus/CVector2f.hpp>
#include <zeus/CVector3f.hpp>
#include <zeus/CVector4f.hpp>

namespace metaforce {

class CLineRenderer {
public:
  enum class EPrimitiveMode { Lines, LineStrip, LineLoop };

  struct SDrawVertTex {
    zeus::CVector4f pos;
    zeus::CColor color;
    zeus::CVector2f uv;
  };

  struct SDrawVertNoTex {
    zeus::CVector4f pos;
    zeus::CColor color;
  };

  struct SDrawUniform {
    zeus::CColor moduColor;
    CGraphics::CFogState fog;
  };

private:
  EPrimitiveMode m_mode;
  u32 m_maxVerts;
  u32 m_nextVert = 0;
  bool m_final = false;
  bool m_textured;

  zeus::CVector3f m_firstPos;
  zeus::CVector3f m_secondPos;
  zeus::CVector2f m_firstUV;
  zeus::CColor m_firstColor;
  float m_firstWidth;
  float m_firstW;

  zeus::CVector3f m_lastPos;
  zeus::CVector3f m_lastPos2;
  zeus::CVector2f m_lastUV;
  zeus::CColor m_lastColor;
  float m_lastWidth;
  float m_lastW;

  static rstl::reserved_vector<SDrawVertTex, 1024> g_StaticLineVertsTex;
  static rstl::reserved_vector<SDrawVertNoTex, 1024> g_StaticLineVertsNoTex;

  static hecl::VertexBufferPool<SDrawVertTex> s_vertPoolTex;
  static hecl::VertexBufferPool<SDrawVertNoTex> s_vertPoolNoTex;
  static hecl::UniformBufferPool<SDrawUniform> s_uniformPool;

public:
  hecl::VertexBufferPool<SDrawVertTex>::Token m_vertBufTex;
  hecl::VertexBufferPool<SDrawVertNoTex>::Token m_vertBufNoTex;
  hecl::UniformBufferPool<SDrawUniform>::Token m_uniformBuf;
  std::array<boo::ObjToken<boo::IShaderDataBinding>, 2> m_shaderBind;

  CLineRenderer(boo::IGraphicsDataFactory::Context& ctx, EPrimitiveMode mode, u32 maxVerts,
                const boo::ObjToken<boo::ITexture>& texture, bool additive, bool zTest = false, bool zGEqual = false);
  CLineRenderer(EPrimitiveMode mode, u32 maxVerts, const boo::ObjToken<boo::ITexture>& texture, bool additive,
                bool zTest = false, bool zGEqual = false);
  CLineRenderer(CLineRenderer&&) = default;

  void Reset();
  void AddVertex(const zeus::CVector3f& position, const zeus::CColor& color, float width,
                 const zeus::CVector2f& uv = zeus::skZero2f);
  void Render(bool alphaWrite = false, const zeus::CColor& moduColor = zeus::skWhite);

  static void UpdateBuffers() {
    s_vertPoolTex.updateBuffers();
    s_vertPoolNoTex.updateBuffers();
    s_uniformPool.updateBuffers();
  }

  static void Initialize();
  static void Shutdown();
};

} // namespace metaforce