Method CompareHash

framework/d3d11/amd_sdk/src/ShaderCache.cpp:2903–2933

-------------------------------------------------------------------------------------- Compares a shaders hash with the has file on disk --------------------------------------------------------------------------------------

// Compares a shaders hash with the has file on disk
//--------------------------------------------------------------------------------------
BOOL ShaderCache::CompareHash( Shader* pShader )
{
    FILE* pFile = NULL;
    wchar_t wsShaderPathName[m_uPATHNAME_MAX_LENGTH];

    CreateFullPathFromOutputFilename( wsShaderPathName, pShader->m_wsHashFile );

    _wfopen_s( &pFile, wsShaderPathName, L"rb" );

    if (pFile)
    {
        fseek( pFile, 0, SEEK_END );
        int iFileSize = ftell( pFile );
        rewind( pFile );
        BYTE* pFileBuf = new BYTE[iFileSize];

        fread( pFileBuf, 1, iFileSize, pFile );

        fclose( pFile );

        if (!memcmp( pShader->m_pHash, pFileBuf, pShader->m_uHashLength ))
        {
            delete [] pFileBuf;
            return TRUE;
        }

        delete [] pFileBuf;
    }

    return FALSE;
}


//--------------------------------------------------------------------------------------