kc3-lang/angle/src/libGLESv2/renderer/IndexBuffer9.cpp

Branch : - branch - main - tag -

• Show log

  Commit

• Author : apatrick@chromium.org
  Date : 2013-01-30 21:53:40
  Hash : 8b400b1e
  Message : Do not use dynamic_cast if RTTI is disabled. Review URL: https://codereview.appspot.com/7250043 git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1808 736b8ea6-26fd-11df-bfd4-992fa37f6226

• src/libGLESv2/renderer/IndexBuffer9.cpp

• //
  // Copyright (c) 2002-2012 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.
  //
  
  // Indexffer9.cpp: Defines the D3D9 IndexBuffer implementation.
  
  #include "libGLESv2/renderer/IndexBuffer9.h"
  
  namespace rx
  {
  
  IndexBuffer9::IndexBuffer9(Renderer9 *const renderer) : mRenderer(renderer)
  {
      mIndexBuffer = NULL;
      mBufferSize = 0;
      mIndexType = 0;
      mDynamic = false;
  }
  
  IndexBuffer9::~IndexBuffer9()
  {
      if (mIndexBuffer)
      {
          mIndexBuffer->Release();
          mIndexBuffer = NULL;
      }
  }
  
  bool IndexBuffer9::initialize(unsigned int bufferSize, GLenum indexType, bool dynamic)
  {
      if (mIndexBuffer)
      {
          mIndexBuffer->Release();
          mIndexBuffer = NULL;
      }
  
      updateSerial();
  
      if (bufferSize > 0)
      {
          D3DFORMAT format;
          if (indexType == GL_UNSIGNED_SHORT || indexType == GL_UNSIGNED_BYTE)
          {
              format = D3DFMT_INDEX16;
          }
          else if (indexType == GL_UNSIGNED_INT)
          {
              if (mRenderer->get32BitIndexSupport())
              {
                  format = D3DFMT_INDEX32;
              }
              else
              {
                  ERR("Attempted to create a 32-bit index buffer but renderer does not support 32-bit indices.");
                  return false;
              }
          }
          else
          {
              ERR("Invalid index type %u.", indexType);
              return false;
          }
  
          DWORD usageFlags = D3DUSAGE_WRITEONLY;
          if (dynamic)
          {
              usageFlags |= D3DUSAGE_DYNAMIC;
          }
  
          HRESULT result = mRenderer->createIndexBuffer(bufferSize, usageFlags, format, &mIndexBuffer);
          if (FAILED(result))
          {
              ERR("Failed to create an index buffer of size %u, result: 0x%08x.", mBufferSize, result);
              return false;
          }
      }
  
      mBufferSize = bufferSize;
      mIndexType = indexType;
      mDynamic = dynamic;
  
      return true;
  }
  
  IndexBuffer9 *IndexBuffer9::makeIndexBuffer9(IndexBuffer *indexBuffer)
  {
      ASSERT(HAS_DYNAMIC_TYPE(IndexBuffer9*, indexBuffer));
      return static_cast<IndexBuffer9*>(indexBuffer);
  }
  
  bool IndexBuffer9::mapBuffer(unsigned int offset, unsigned int size, void** outMappedMemory)
  {
      if (mIndexBuffer)
      {
          DWORD lockFlags = mDynamic ? D3DLOCK_NOOVERWRITE : 0;
  
          void *mapPtr = NULL;
          HRESULT result = mIndexBuffer->Lock(offset, size, &mapPtr, lockFlags);
          if (FAILED(result))
          {
              ERR("Index buffer lock failed with error 0x%08x", result);
              return false;
          }
  
          *outMappedMemory = mapPtr;
          return true;
      }
      else
      {
          ERR("Index buffer not initialized.");
          return false;
      }
  }
  
  bool IndexBuffer9::unmapBuffer()
  {
      if (mIndexBuffer)
      {
          HRESULT result = mIndexBuffer->Unlock();
          if (FAILED(result))
          {
              ERR("Index buffer unlock failed with error 0x%08x", result);
              return false;
          }
  
          return true;
      }
      else
      {
          ERR("Index buffer not initialized.");
          return false;
      }
  }
  
  GLenum IndexBuffer9::getIndexType() const
  {
      return mIndexType;
  }
  
  unsigned int IndexBuffer9::getBufferSize() const
  {
      return mBufferSize;
  }
  
  bool IndexBuffer9::setSize(unsigned int bufferSize, GLenum indexType)
  {
      if (bufferSize > mBufferSize || indexType != mIndexType)
      {
          return initialize(bufferSize, indexType, mDynamic);
      }
      else
      {
          return true;
      }
  }
  
  bool IndexBuffer9::discard()
  {
      if (mIndexBuffer)
      {
          void *dummy;
          HRESULT result;
  
          result = mIndexBuffer->Lock(0, 1, &dummy, D3DLOCK_DISCARD);
          if (FAILED(result))
          {
              ERR("Discard lock failed with error 0x%08x", result);
              return false;
          }
  
          result = mIndexBuffer->Unlock();
          if (FAILED(result))
          {
              ERR("Discard unlock failed with error 0x%08x", result);
              return false;
          }
  
          return true;
      }
      else
      {
          ERR("Index buffer not initialized.");
          return false;
      }
  }
  
  D3DFORMAT IndexBuffer9::getIndexFormat() const
  {
      switch (mIndexType)
      {
        case GL_UNSIGNED_BYTE:    return D3DFMT_INDEX16;
        case GL_UNSIGNED_SHORT:   return D3DFMT_INDEX16;
        case GL_UNSIGNED_INT:     return D3DFMT_INDEX32;
        default: UNREACHABLE();   return D3DFMT_UNKNOWN;
      }
  }
  
  IDirect3DIndexBuffer9 * IndexBuffer9::getBuffer() const
  {
      return mIndexBuffer;
  }
  
  }