DepthStencilView.cpp

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#include "DepthStencilView.h"
#include "Device.h"
#include "DeviceContext.h"
#include "Texture.h"
 
HRESULT
DepthStencilView::init(Device& device, Texture& depthStencil, DXGI_FORMAT format) {
  if (!device.m_device) {
    ERROR("DepthStencilView", "init", "Device is null.");
  }
  if (!depthStencil.m_texture) {
    ERROR("DepthStencilView", "init", "Texture is null.");
    return E_FAIL;
  }
 
  // Config depth stencil view description
  D3D11_DEPTH_STENCIL_VIEW_DESC descDSV;
  memset(&descDSV, 0, sizeof(descDSV));
  descDSV.Format = format;
  descDSV.ViewDimension = D3D11_DSV_DIMENSION_TEXTURE2DMS;
  descDSV.Texture2D.MipSlice = 0;
 
  // Create depth stencil view
  HRESULT hr = device.m_device->CreateDepthStencilView(depthStencil.m_texture, 
                                                       &descDSV, 
                                                       &m_depthStencilView);
 
  if (FAILED(hr)) {
    ERROR("DepthStencilView", "init", 
      ("Failed to create depth stencil view. HRESULT: " + std::to_string(hr)).c_str());
    return hr;
  }
 
  return S_OK;
}
 
HRESULT
DepthStencilView::init(Device& device,
  Texture& depthStencil,
  DXGI_FORMAT format,
  D3D11_DSV_DIMENSION viewDimension) {
  if (!device.m_device) {
    ERROR("DepthStencilView", "init", "Device is null.");
    return E_POINTER;
  }
  if (!depthStencil.m_texture) {
    ERROR("DepthStencilView", "init", "Texture is null.");
    return E_FAIL;
  }
 
  D3D11_DEPTH_STENCIL_VIEW_DESC descDSV{};
  descDSV.Format = format;
  descDSV.ViewDimension = viewDimension;
 
  if (viewDimension == D3D11_DSV_DIMENSION_TEXTURE2D) {
    descDSV.Texture2D.MipSlice = 0;
  }
 
  HRESULT hr = device.m_device->CreateDepthStencilView(
    depthStencil.m_texture,
    &descDSV,
    &m_depthStencilView
  );
 
  if (FAILED(hr)) {
    ERROR("DepthStencilView", "init",
      ("Failed to create depth stencil view. HRESULT: " + std::to_string(hr)).c_str());
    return hr;
  }
 
  return S_OK;
}
 
void
DepthStencilView::render(DeviceContext& deviceContext) {
  if (!deviceContext.m_deviceContext) {
    ERROR("DepthStencilView", "render", "Device context is null.");
    return;
  }
 
  // Clear depth stencil view
  deviceContext.m_deviceContext->ClearDepthStencilView(m_depthStencilView,
                                                       D3D11_CLEAR_DEPTH | D3D11_CLEAR_STENCIL,
                                                       1.0f,
                                                       0);
}
 
void
DepthStencilView::destroy() {
  SAFE_RELEASE(m_depthStencilView);
}