metaforce/Runtime/Graphics/Shaders/CAABoxShader.cpp

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

#include <array>

#include "Runtime/Graphics/CGraphics.hpp"

#include <hecl/Pipeline.hpp>
#include <zeus/CAABox.hpp>

namespace urde {

static boo::ObjToken<boo::IShaderPipeline> s_Pipeline;
static boo::ObjToken<boo::IShaderPipeline> s_zOnlyPipeline;

void CAABoxShader::Initialize() {
  s_Pipeline = hecl::conv->convert(Shader_CAABoxShader{});
  s_zOnlyPipeline = hecl::conv->convert(Shader_CAABoxShaderZOnly{});
}

void CAABoxShader::Shutdown() {
  s_Pipeline.reset();
  s_zOnlyPipeline.reset();
}

CAABoxShader::CAABoxShader(bool zOnly) {
  CGraphics::CommitResources([this, zOnly](boo::IGraphicsDataFactory::Context& ctx) {
    m_vbo = ctx.newDynamicBuffer(boo::BufferUse::Vertex, sizeof(zeus::CVector3f), 34);
    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(zOnly ? s_zOnlyPipeline : s_Pipeline, m_vbo.get(), nullptr, nullptr, bufs.size(),
                                 bufs.data(), stages.data(), nullptr, nullptr, 0, nullptr, nullptr, nullptr);
    return true;
  } BooTrace);
}

void CAABoxShader::setAABB(const zeus::CAABox& aabb) {
  const std::array<zeus::CVector3f, 34> vboData{{
      {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->load(vboData.data(), sizeof(vboData));
}

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, sizeof(Uniform));

  CGraphics::SetShaderDataBinding(m_dataBind);
  CGraphics::DrawArray(0, 34);
}

} // namespace urde