kc3-lang/angle/src/libANGLE/renderer/d3d/d3d9/IndexBuffer9.cpp

Branch : - branch - main - tag -

• Show log

  Commit

• Author : Jamie Madill
  Date : 2015-04-01 16:15:32
  Hash : f4bf3811
  Message : Use GetAs/GetImplAs whenever possible. This patch cleans up the rest of our custom casting helper functions. Change-Id: I41975c736765fca855c4498acca31116df3e8317 Reviewed-on: https://chromium-review.googlesource.com/263477 Tested-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Brandon Jones <bajones@chromium.org>

• src/libANGLE/renderer/d3d/d3d9/IndexBuffer9.cpp

• //
  // Copyright (c) 2002-2014 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 "libANGLE/renderer/d3d/d3d9/IndexBuffer9.h"
  #include "libANGLE/renderer/d3d/d3d9/Renderer9.h"
  
  namespace rx
  {
  
  IndexBuffer9::IndexBuffer9(Renderer9 *const renderer) : mRenderer(renderer)
  {
      mIndexBuffer = NULL;
      mBufferSize = 0;
      mIndexType = 0;
      mDynamic = false;
  }
  
  IndexBuffer9::~IndexBuffer9()
  {
      SafeRelease(mIndexBuffer);
  }
  
  gl::Error IndexBuffer9::initialize(unsigned int bufferSize, GLenum indexType, bool dynamic)
  {
      SafeRelease(mIndexBuffer);
  
      updateSerial();
  
      if (bufferSize > 0)
      {
          D3DFORMAT format = D3DFMT_UNKNOWN;
          if (indexType == GL_UNSIGNED_SHORT || indexType == GL_UNSIGNED_BYTE)
          {
              format = D3DFMT_INDEX16;
          }
          else if (indexType == GL_UNSIGNED_INT)
          {
              ASSERT(mRenderer->getRendererExtensions().elementIndexUint);
              format = D3DFMT_INDEX32;
          }
          else UNREACHABLE();
  
          DWORD usageFlags = D3DUSAGE_WRITEONLY;
          if (dynamic)
          {
              usageFlags |= D3DUSAGE_DYNAMIC;
          }
  
          HRESULT result = mRenderer->createIndexBuffer(bufferSize, usageFlags, format, &mIndexBuffer);
          if (FAILED(result))
          {
              return gl::Error(GL_OUT_OF_MEMORY, "Failed to allocate internal index buffer of size, %lu.", bufferSize);
          }
      }
  
      mBufferSize = bufferSize;
      mIndexType = indexType;
      mDynamic = dynamic;
  
      return gl::Error(GL_NO_ERROR);
  }
  
  gl::Error IndexBuffer9::mapBuffer(unsigned int offset, unsigned int size, void** outMappedMemory)
  {
      if (!mIndexBuffer)
      {
          return gl::Error(GL_OUT_OF_MEMORY, "Internal index buffer is not initialized.");
      }
  
      DWORD lockFlags = mDynamic ? D3DLOCK_NOOVERWRITE : 0;
  
      void *mapPtr = NULL;
      HRESULT result = mIndexBuffer->Lock(offset, size, &mapPtr, lockFlags);
      if (FAILED(result))
      {
          return gl::Error(GL_OUT_OF_MEMORY, "Failed to lock internal index buffer, HRESULT: 0x%08x.", result);
      }
  
      *outMappedMemory = mapPtr;
      return gl::Error(GL_NO_ERROR);
  }
  
  gl::Error IndexBuffer9::unmapBuffer()
  {
      if (!mIndexBuffer)
      {
          return gl::Error(GL_OUT_OF_MEMORY, "Internal index buffer is not initialized.");
      }
  
      HRESULT result = mIndexBuffer->Unlock();
      if (FAILED(result))
      {
          return gl::Error(GL_OUT_OF_MEMORY, "Failed to unlock internal index buffer, HRESULT: 0x%08x.", result);
      }
  
      return gl::Error(GL_NO_ERROR);
  }
  
  GLenum IndexBuffer9::getIndexType() const
  {
      return mIndexType;
  }
  
  unsigned int IndexBuffer9::getBufferSize() const
  {
      return mBufferSize;
  }
  
  gl::Error IndexBuffer9::setSize(unsigned int bufferSize, GLenum indexType)
  {
      if (bufferSize > mBufferSize || indexType != mIndexType)
      {
          return initialize(bufferSize, indexType, mDynamic);
      }
      else
      {
          return gl::Error(GL_NO_ERROR);
      }
  }
  
  gl::Error IndexBuffer9::discard()
  {
      if (!mIndexBuffer)
      {
          return gl::Error(GL_OUT_OF_MEMORY, "Internal index buffer is not initialized.");
      }
  
      void *dummy;
      HRESULT result;
  
      result = mIndexBuffer->Lock(0, 1, &dummy, D3DLOCK_DISCARD);
      if (FAILED(result))
      {
          return gl::Error(GL_OUT_OF_MEMORY, "Failed to lock internal index buffer, HRESULT: 0x%08x.", result);
      }
  
      result = mIndexBuffer->Unlock();
      if (FAILED(result))
      {
          return gl::Error(GL_OUT_OF_MEMORY, "Failed to unlock internal index buffer, HRESULT: 0x%08x.", result);
      }
  
      return gl::Error(GL_NO_ERROR);
  }
  
  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;
  }
  
  }