EditorViewportPass.cpp

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#include "EngineUtilities\Utilities\EditorViewportPass.h"
#include "Device.h"
#include "DeviceContext.h"
 
HRESULT EditorViewportPass::init(Device& device, unsigned int width, unsigned int height)
{
  return createResources(device, width, height);
}
 
HRESULT EditorViewportPass::resize(Device& device, unsigned int width, unsigned int height)
{
  if (width < 64) width = 64;
  if (height < 64) height = 64;
 
  if (width == m_width && height == m_height && isValid())
    return S_OK;
 
  return createResources(device, width, height);
}
 
HRESULT EditorViewportPass::createResources(Device& device, unsigned int width, unsigned int height)
{
  destroy();
 
  if (width == 0)  width = 1;
  if (height == 0) height = 1;
 
  m_width = width;
  m_height = height;
 
  HRESULT hr = S_OK;
 
  // 1) Color texture offscreen
  hr = m_colorTexture.init(
    device,
    width,
    height,
    DXGI_FORMAT_R8G8B8A8_UNORM,
    D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE,
    1,
    0
  );
  if (FAILED(hr)) return hr;
 
  // 2) RTV sobre esa textura (NO multisample view)
  hr = m_rtv.init(
    device,
    m_colorTexture,
    D3D11_RTV_DIMENSION_TEXTURE2D,
    DXGI_FORMAT_R8G8B8A8_UNORM
  );
  if (FAILED(hr)) return hr;
 
  // 3) SRV separado para ImGui
  hr = m_colorSRV.init(device, m_colorTexture, DXGI_FORMAT_R8G8B8A8_UNORM);
  if (FAILED(hr)) return hr;
 
  // 4) Depth texture
  hr = m_depthTexture.init(
    device,
    width,
    height,
    DXGI_FORMAT_D24_UNORM_S8_UINT,
    D3D11_BIND_DEPTH_STENCIL,
    1,
    0
  );
  if (FAILED(hr)) return hr;
 
  // 5) DSV sobre esa depth texture (NO multisample view)
  hr = m_dsv.init(
    device,
    m_depthTexture,
    DXGI_FORMAT_D24_UNORM_S8_UINT,
    D3D11_DSV_DIMENSION_TEXTURE2D
  );
  if (FAILED(hr)) return hr;
 
  return S_OK;
}
 
void EditorViewportPass::begin(DeviceContext& deviceContext, const float clearColor[4])
{
  m_rtv.render(deviceContext, m_dsv, 1, clearColor);
}
 
void EditorViewportPass::swap(EditorViewportPass& other)
{
  std::swap(m_colorTexture, other.m_colorTexture);
  std::swap(m_colorSRV, other.m_colorSRV);
  std::swap(m_rtv, other.m_rtv);
  std::swap(m_depthTexture, other.m_depthTexture);
  std::swap(m_dsv, other.m_dsv);
  std::swap(m_width, other.m_width);
  std::swap(m_height, other.m_height);
}
 
void EditorViewportPass::clearDepth(DeviceContext& deviceContext)
{
  m_dsv.render(deviceContext);
}
 
void EditorViewportPass::setViewport(DeviceContext& deviceContext)
{
  D3D11_VIEWPORT vp{};
  vp.TopLeftX = 0.0f;
  vp.TopLeftY = 0.0f;
  vp.Width = static_cast<float>(m_width);
  vp.Height = static_cast<float>(m_height);
  vp.MinDepth = 0.0f;
  vp.MaxDepth = 1.0f;
 
  deviceContext.m_deviceContext->RSSetViewports(1, &vp);
}
 
void EditorViewportPass::destroy()
{
  m_dsv.destroy();
  m_depthTexture.destroy();
  m_colorSRV.destroy();
  m_rtv.destroy();
  m_colorTexture.destroy();
 
  m_width = 1;
  m_height = 1;
}