text: #include "Runtime/Graphics/Shaders/CColoredQuadFilter.hpp"
  
  #include <array>
  
  #include "Runtime/Camera/CCameraFilter.hpp"
  #include "Runtime/Graphics/CGraphics.hpp"
  
  #include <hecl/Pipeline.hpp>
  
  namespace urde {
  
  static boo::ObjToken<boo::IShaderPipeline> s_AlphaPipeline;
  static boo::ObjToken<boo::IShaderPipeline> s_AddPipeline;
  static boo::ObjToken<boo::IShaderPipeline> s_MultPipeline;
  
  void CColoredQuadFilter::Initialize() {
    s_AlphaPipeline = hecl::conv->convert(Shader_CColoredQuadFilter{});
    s_AddPipeline = hecl::conv->convert(Shader_CColoredQuadFilterAdd{});
    s_MultPipeline = hecl::conv->convert(Shader_CColoredQuadFilterMul{});
  }
  
  void CColoredQuadFilter::Shutdown() {
    s_AlphaPipeline.reset();
    s_AddPipeline.reset();
    s_MultPipeline.reset();
  }
  
  static boo::ObjToken<boo::IShaderPipeline> SelectPipeline(EFilterType type) {
    switch (type) {
    case EFilterType::Blend:
      return s_AlphaPipeline;
    case EFilterType::Add:
      return s_AddPipeline;
    case EFilterType::Multiply:
      return s_MultPipeline;
    default:
      return s_AlphaPipeline;
    }
  }
  
  CColoredQuadFilter::CColoredQuadFilter(EFilterType type) {
    CGraphics::CommitResources([this, type](boo::IGraphicsDataFactory::Context& ctx) {
      struct Vert {
        zeus::CVector2f m_pos;
      };
  
      const std::array<Vert, 4> verts{{
          {{0.0, 0.0}},
          {{0.0, 1.0}},
          {{1.0, 0.0}},
          {{1.0, 1.0}},
      }};
  
      m_vbo = ctx.newStaticBuffer(boo::BufferUse::Vertex, verts.data(), 16, verts.size());
      m_uniBuf = ctx.newDynamicBuffer(boo::BufferUse::Uniform, sizeof(Uniform), 1);
  
      const std::array<boo::ObjToken<boo::IGraphicsBuffer>, 1> bufs{m_uniBuf.get()};
      constexpr std::array<boo::PipelineStage, 1> stages{boo::PipelineStage::Vertex};
      m_dataBind = ctx.newShaderDataBinding(SelectPipeline(type), m_vbo.get(), nullptr, nullptr, bufs.size(), bufs.data(),
                                            stages.data(), nullptr, nullptr, 0, nullptr, nullptr, nullptr);
      return true;
    } BooTrace);
  }
  
  void CColoredQuadFilter::draw(const zeus::CColor& color, const zeus::CRectangle& rect) {
    SCOPED_GRAPHICS_DEBUG_GROUP("CColoredQuadFilter::draw", zeus::skMagenta);
  
    m_uniform.m_matrix[0][0] = rect.size.x() * 2.f;
    m_uniform.m_matrix[1][1] = rect.size.y() * 2.f;
    m_uniform.m_matrix[3][0] = rect.position.x() * 2.f - 1.f;
    m_uniform.m_matrix[3][1] = rect.position.y() * 2.f - 1.f;
    m_uniform.m_color = color;
    m_uniBuf->load(&m_uniform, sizeof(m_uniform));
  
    CGraphics::SetShaderDataBinding(m_dataBind);
    CGraphics::DrawArray(0, 4);
  }
  
  void CWideScreenFilter::draw(const zeus::CColor& color, float t) {
    if (g_Viewport.aspect < 1.7777f) {
      float targetHeight = g_Viewport.x8_width / 1.7777f;
      float delta = (g_Viewport.xc_height - targetHeight) * t / 2.f;
      delta /= float(g_Viewport.xc_height);
      zeus::CRectangle rect(0.f, 0.f, 1.f, delta);
      m_bottom.draw(color, rect);
      rect.position.y() = 1.f - delta;
      m_top.draw(color, rect);
    }
  }
  
  float CWideScreenFilter::SetViewportToMatch(float t) {
    if (g_Viewport.aspect < 1.7777f) {
      float targetHeight = g_Viewport.x8_width / 1.7777f;
      float delta = (g_Viewport.xc_height - targetHeight) * t / 2.f;
      boo::SWindowRect rect = {};
      rect.size[0] = g_Viewport.x8_width;
      rect.size[1] = g_Viewport.xc_height - delta * 2.f;
      rect.location[1] = delta;
      CGraphics::g_CroppedViewport = rect;
      CGraphics::g_BooMainCommandQueue->setViewport(rect);
      return 1.7777f;
    } else {
      SetViewportToFull();
      return g_Viewport.aspect;
    }
  }
  
  void CWideScreenFilter::SetViewportToFull() {
    boo::SWindowRect rect = {};
    rect.size[0] = g_Viewport.x8_width;
    rect.size[1] = g_Viewport.xc_height;
    CGraphics::g_CroppedViewport = rect;
    CGraphics::g_BooMainCommandQueue->setViewport(rect);
  }
  
  } // namespace urde
  