kc3-lang/angle/src/libGLESv2/renderer/SwapChain11.cpp

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• Hash : d733bb88
  Author :
  Date : 2012-11-28T20:53:40
  

  Adds makeSwapChain9/11 functions.
  
  TRAC #22134
  
  Signed-off-by: Nicolas Capens
  Signed-off-by: Daniel Koch
  
  git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1477 736b8ea6-26fd-11df-bfd4-992fa37f6226
  

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• src/libGLESv2/renderer/SwapChain11.cpp

• //
  // Copyright (c) 2012 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  // SwapChain11.cpp: Implements a back-end specific class for the D3D11 swap chain.
  
  #include "libGLESv2/renderer/SwapChain11.h"
  
  #include "common/debug.h"
  #include "libGLESv2/utilities.h"
  #include "libGLESv2/renderer/renderer11_utils.h"
  #include "libGLESv2/renderer/Renderer11.h"
  #include "libGLESv2/Context.h"
  #include "libGLESv2/main.h"
  
  namespace rx
  {
  
  SwapChain11::SwapChain11(Renderer11 *renderer, HWND window, HANDLE shareHandle,
                           GLenum backBufferFormat, GLenum depthBufferFormat)
      : mRenderer(renderer), SwapChain(window, shareHandle, backBufferFormat, depthBufferFormat)
  {
      mSwapChain = NULL;
      mBackBuffer = NULL;
      mBackBufferView = NULL;
      mRenderTargetView = NULL;
      mDepthStencil = NULL;
      mDepthStencilView = NULL;
      mOffscreenTexture = NULL;
      mWidth = -1;
      mHeight = -1;
  }
  
  SwapChain11::~SwapChain11()
  {
      release();
  }
  
  void SwapChain11::release()
  {
      if (mSwapChain)
      {
          mSwapChain->Release();
          mSwapChain = NULL;
      }
  
      if (mBackBuffer)
      {
          mBackBuffer->Release();
          mBackBuffer = NULL;
      }
  
      if (mBackBufferView)
      {
          mBackBufferView->Release();
          mBackBufferView = NULL;
      }
      
      if (mRenderTargetView)
      {
          mRenderTargetView->Release();
          mRenderTargetView = NULL;
      }
  
      if (mDepthStencil)
      {
          mDepthStencil->Release();
          mDepthStencil = NULL;
      }
  
      if (mDepthStencilView)
      {
          mDepthStencilView->Release();
          mDepthStencilView = NULL;
      }
  
      if (mOffscreenTexture)
      {
          mOffscreenTexture->Release();
          mOffscreenTexture = NULL;
      }
  
      if (mWindow)
          mShareHandle = NULL;
  }
  
  EGLint SwapChain11::reset(int backbufferWidth, int backbufferHeight, EGLint swapInterval)
  {
      ID3D11Device *device = mRenderer->getDevice();
  
      if (device == NULL)
      {
          return EGL_BAD_ACCESS;
      }
  
      // Release specific resources to free up memory for the new render target, while the
      // old render target still exists for the purpose of preserving its contents.
      if (mSwapChain)
      {
          mSwapChain->Release();
          mSwapChain = NULL;
      }
  
      if (mBackBuffer)
      {
          mBackBuffer->Release();
          mBackBuffer = NULL;
      }
  
      if (mBackBufferView)
      {
          mBackBufferView->Release();
          mBackBufferView = NULL;
      }
  
      if (mRenderTargetView)   // TODO: Preserve the render target content
      {
          mRenderTargetView->Release();
          mRenderTargetView = NULL;
      }
  
      if (mOffscreenTexture)
      {
          mOffscreenTexture->Release();
          mOffscreenTexture = NULL;
      }
  
      if (mDepthStencil)
      {
          mDepthStencil->Release();
          mDepthStencil = NULL;
      }
  
      if (mDepthStencilView)
      {
          mDepthStencilView->Release();
          mDepthStencilView = NULL;
      }
  
      HANDLE *pShareHandle = NULL;
      if (!mWindow && mRenderer->getShareHandleSupport())
      {
          pShareHandle = &mShareHandle;
      }
  
      D3D11_TEXTURE2D_DESC offscreenTextureDesc = {0};
      offscreenTextureDesc.Width = backbufferWidth;
      offscreenTextureDesc.Height = backbufferHeight;
      offscreenTextureDesc.Format = gl_d3d11::ConvertRenderbufferFormat(mBackBufferFormat);
      offscreenTextureDesc.MipLevels = 1;
      offscreenTextureDesc.ArraySize = 1;
      offscreenTextureDesc.SampleDesc.Count = 1;
      offscreenTextureDesc.SampleDesc.Quality = 0;
      offscreenTextureDesc.Usage = D3D11_USAGE_DEFAULT;
      offscreenTextureDesc.BindFlags = D3D11_BIND_RENDER_TARGET;
      offscreenTextureDesc.CPUAccessFlags = 0;
      offscreenTextureDesc.MiscFlags = 0;   // D3D11_RESOURCE_MISC_SHARED
  
      HRESULT result = device->CreateTexture2D(&offscreenTextureDesc, NULL, &mOffscreenTexture);
  
      if (FAILED(result))
      {
          ERR("Could not create offscreen texture: %08lX", result);
          release();
  
          if (isDeviceLostError(result))
          {
              return EGL_CONTEXT_LOST;
          }
          else
          {
              return EGL_BAD_ALLOC;
          }
      }
          
      result = device->CreateRenderTargetView(mOffscreenTexture, NULL, &mRenderTargetView);
      ASSERT(SUCCEEDED(result));
  
      if (mWindow)
      {
          IDXGIFactory *factory = mRenderer->getDxgiFactory();
  
          DXGI_SWAP_CHAIN_DESC swapChainDesc = {0};
          swapChainDesc.BufferCount = 2;
          swapChainDesc.BufferDesc.Format = gl_d3d11::ConvertRenderbufferFormat(mBackBufferFormat);
          swapChainDesc.BufferDesc.Width = 1;
          swapChainDesc.BufferDesc.Height = 1;
          swapChainDesc.BufferDesc.Scaling = DXGI_MODE_SCALING_UNSPECIFIED;
          swapChainDesc.BufferDesc.ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED;
          swapChainDesc.BufferDesc.RefreshRate.Numerator = 0;
          swapChainDesc.BufferDesc.RefreshRate.Denominator = 1;
          swapChainDesc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
          swapChainDesc.Flags = 0;
          swapChainDesc.OutputWindow = mWindow;
          swapChainDesc.SampleDesc.Count = 1;
          swapChainDesc.SampleDesc.Quality = 0;
          swapChainDesc.Windowed = TRUE;
  
          result = factory->CreateSwapChain(device, &swapChainDesc, &mSwapChain);
  
          if (FAILED(result))
          {
              ERR("Could not create additional swap chains or offscreen surfaces: %08lX", result);
              release();
  
              if (isDeviceLostError(result))
              {
                  return EGL_CONTEXT_LOST;
              }
              else
              {
                  return EGL_BAD_ALLOC;
              }
          }
  
          result = mSwapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), (LPVOID*)&mBackBuffer);
          ASSERT(SUCCEEDED(result));
  
          result = device->CreateRenderTargetView(mBackBuffer, NULL, &mBackBufferView);
          ASSERT(SUCCEEDED(result));
      }
  
      if (mDepthBufferFormat != GL_NONE)
      {
          D3D11_TEXTURE2D_DESC depthStencilDesc = {0};
          depthStencilDesc.Width = backbufferWidth;
          depthStencilDesc.Height = backbufferHeight;
          depthStencilDesc.Format = gl_d3d11::ConvertRenderbufferFormat(mDepthBufferFormat);
          depthStencilDesc.MipLevels = 1;
          depthStencilDesc.ArraySize = 1;
          depthStencilDesc.SampleDesc.Count = 1;
          depthStencilDesc.SampleDesc.Quality = 0;
          depthStencilDesc.Usage = D3D11_USAGE_DEFAULT;
          depthStencilDesc.BindFlags = D3D11_BIND_DEPTH_STENCIL;
          depthStencilDesc.CPUAccessFlags = 0;
          depthStencilDesc.MiscFlags = 0;
  
          result = device->CreateTexture2D(&depthStencilDesc, NULL, &mDepthStencil);
  
          if (FAILED(result))
          {
              ERR("Could not create depthstencil surface for new swap chain: 0x%08X", result);
              release();
  
              if (isDeviceLostError(result))
              {
                  return EGL_CONTEXT_LOST;
              }
              else
              {
                  return EGL_BAD_ALLOC;
              }
          }
  
          result = device->CreateDepthStencilView(mDepthStencil, NULL, &mDepthStencilView);
          ASSERT(SUCCEEDED(result));
      }
  
      mWidth = backbufferWidth;
      mHeight = backbufferHeight;
  
      return EGL_SUCCESS;
  }
  
  // parameters should be validated/clamped by caller
  EGLint SwapChain11::swapRect(EGLint x, EGLint y, EGLint width, EGLint height)
  {
      if (!mSwapChain)
      {
          return EGL_SUCCESS;
      }
  
      ID3D11Device *device = mRenderer->getDevice();
  
      // TODO
      UNIMPLEMENTED();
  
      return EGL_SUCCESS;
  }
  
  // Increments refcount on view.
  // caller must Release() the returned view
  ID3D11RenderTargetView *SwapChain11::getRenderTarget()
  {
      if (mRenderTargetView)
      {
          mRenderTargetView->AddRef();
      }
  
      return mRenderTargetView;
  }
  
  // Increments refcount on view.
  // caller must Release() the returned view
  ID3D11DepthStencilView *SwapChain11::getDepthStencil()
  {
      if (mDepthStencilView)
      {
          mDepthStencilView->AddRef();
      }
  
      return mDepthStencilView;
  }
  
  // Increments refcount on texture.
  // caller must Release() the returned texture
  ID3D11Texture2D *SwapChain11::getOffscreenTexture()
  {
      if (mOffscreenTexture)
      {
          mOffscreenTexture->AddRef();
      }
  
      return mOffscreenTexture;
  }
  
  SwapChain11 *SwapChain11::makeSwapChain11(SwapChain *swapChain)
  {
      ASSERT(dynamic_cast<rx::SwapChain11*>(swapChain) != NULL);
      return static_cast<rx::SwapChain11*>(swapChain);
  }
  
  }
  
  

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