metaforce/Runtime/Graphics/Shaders/CAABoxShader.cpp

#include "Runtime/Graphics/Shaders/CAABoxShader.hpp"

#include <array>
#include <zeus/CAABox.hpp>

#include "Runtime/Graphics/CGraphics.hpp"
#include "CAABoxShader.cpp.hshhead"

namespace urde {
using namespace hsh::pipeline;

template <ERglCullMode CullMode, ERglEnum Compare, bool DepthWrite, ERglBlendMode Mode, ERglBlendFactor SrcFac,
          ERglBlendFactor DstFac, ERglLogicOp Op, bool AlphaWrite>
struct CAABoxShaderPipeline
: pipeline<topology<hsh::TriangleStrip>, ERglBlendModeAttachment<Mode, SrcFac, DstFac, Op, AlphaWrite>,
           ERglCullModeAttachment<CullMode>, ERglDepthCompareAttachment<Compare>, depth_write<DepthWrite>> {
  CAABoxShaderPipeline(hsh::vertex_buffer<CAABoxShader::Vert> vbo, hsh::uniform_buffer<CAABoxShader::Uniform> uniBuf) {
    this->position = uniBuf->m_xf * hsh::float4(vbo->m_pos, 1.f);
    this->color_out[0] = uniBuf->m_color;
  }
};
template struct CAABoxShaderPipeline<ERglCullMode::None, ERglEnum::LEqual, true, ERglBlendMode::Blend,
                                     ERglBlendFactor::SrcAlpha, ERglBlendFactor::InvSrcAlpha, ERglLogicOp::Clear, true>;

constexpr size_t VertexCount = 34;

CAABoxShader::CAABoxShader(const zeus::CAABox& aabb) {
  const std::array<Vert, VertexCount> verts{{
      {{aabb.max.x(), aabb.max.y(), aabb.min.z()}}, {{aabb.max.x(), aabb.min.y(), aabb.min.z()}},
      {{aabb.max.x(), aabb.max.y(), aabb.max.z()}}, {{aabb.max.x(), aabb.min.y(), aabb.max.z()}},
      {{aabb.max.x(), aabb.min.y(), aabb.max.z()}},

      {{aabb.min.x(), aabb.max.y(), aabb.min.z()}}, {{aabb.min.x(), aabb.max.y(), aabb.min.z()}},
      {{aabb.max.x(), aabb.max.y(), aabb.min.z()}}, {{aabb.min.x(), aabb.max.y(), aabb.max.z()}},
      {{aabb.max.x(), aabb.max.y(), aabb.max.z()}}, {{aabb.max.x(), aabb.max.y(), aabb.max.z()}},

      {{aabb.min.x(), aabb.max.y(), aabb.min.z()}}, {{aabb.min.x(), aabb.max.y(), aabb.min.z()}},
      {{aabb.min.x(), aabb.min.y(), aabb.min.z()}}, {{aabb.min.x(), aabb.max.y(), aabb.max.z()}},
      {{aabb.min.x(), aabb.min.y(), aabb.max.z()}}, {{aabb.min.x(), aabb.min.y(), aabb.max.z()}},

      {{aabb.min.x(), aabb.min.y(), aabb.min.z()}}, {{aabb.min.x(), aabb.min.y(), aabb.min.z()}},
      {{aabb.max.x(), aabb.min.y(), aabb.min.z()}}, {{aabb.min.x(), aabb.min.y(), aabb.max.z()}},
      {{aabb.max.x(), aabb.min.y(), aabb.max.z()}}, {{aabb.max.x(), aabb.min.y(), aabb.max.z()}},

      {{aabb.min.x(), aabb.min.y(), aabb.max.z()}}, {{aabb.min.x(), aabb.min.y(), aabb.max.z()}},
      {{aabb.max.x(), aabb.min.y(), aabb.max.z()}}, {{aabb.min.x(), aabb.max.y(), aabb.max.z()}},
      {{aabb.max.x(), aabb.max.y(), aabb.max.z()}}, {{aabb.max.x(), aabb.max.y(), aabb.max.z()}},

      {{aabb.min.x(), aabb.min.y(), aabb.min.z()}}, {{aabb.min.x(), aabb.min.y(), aabb.min.z()}},
      {{aabb.max.x(), aabb.min.y(), aabb.min.z()}}, {{aabb.min.x(), aabb.max.y(), aabb.min.z()}},
      {{aabb.max.x(), aabb.max.y(), aabb.min.z()}},
  }};

  m_vbo = hsh::create_vertex_buffer(verts);
  m_uniBuf = hsh::create_dynamic_uniform_buffer<Uniform>();
  m_dataBind.hsh_bind(CAABoxShaderPipeline<gx_CullMode, gx_DepthTest, gx_DepthWrite, gx_BlendMode, gx_BlendSrcFac,
                                           gx_BlendDstFac, gx_BlendOp, gx_AlphaWrite>(m_vbo.get(), m_uniBuf.get()));
}

void CAABoxShader::draw(const zeus::CColor& color) {
  SCOPED_GRAPHICS_DEBUG_GROUP("CAABoxShader::draw", zeus::skMagenta);

  m_uniform.m_xf = CGraphics::GetPerspectiveProjectionMatrix(true) * CGraphics::g_GXModelView.toMatrix4f();
  m_uniform.m_color = color;
  m_uniBuf.load(m_uniform);

  m_dataBind.draw(0, VertexCount);
}

} // namespace urde