Function CopyToTexture

trinity/Tr2ImageIOHelpers.cpp:148–198

}

bool CopyToTexture( ImageIO::HostBitmap& bitmap, Tr2TextureAL& texture, unsigned int x, unsigned int y, unsigned int margin, Tr2RenderContext& renderContext )
{
	CCP_STATS_ZONE( __FUNCTION__ );

	if( !bitmap.IsValid() )
	{
		return false;
	}

	if( texture.GetFormat() != bitmap.GetFormat() )
	{
		CCP_LOGERR( "Tr2ImageHandler::CopyToTexture - formats don't match" );
		return false;
	}

	if( x >= texture.GetWidth() || y >= texture.GetHeight() )
	{
		CCP_LOGERR( "Tr2ImageHandler::CopyToTexture - out of bounds" );
		return false;
	}

	if( x + bitmap.GetWidth() > texture.GetWidth() || y + bitmap.GetHeight() > texture.GetHeight() )
	{
		CCP_LOGERR( "Tr2ImageHandler::CopyToTexture - out of bounds" );
		return false;
	}

	if( !margin )
	{
		const auto result = texture.UpdateSubresource( Tr2TextureSubresource( 0 ).SetRect( x, y, x + bitmap.GetWidth(), y + bitmap.GetHeight() ), bitmap.GetRawData(), bitmap.GetPitch(), 0, renderContext );
		if( FAILED( result ) )
		{
			CCP_LOGERR( "Tr2ImageHandler::CopyToTexture - UpdateSubresource failed [no margin]: %08x", result.GetResult() );
		}
		return SUCCEEDED( result );
	}

	// Can't expect the Hal to support updating a subresource with automatic replication of border pixels, so do this ourselves in a chunk
	// of temporary memory, then send that off to the backend.

	std::vector<unsigned char> pixels;
	unsigned pitch = 0;
	AddMargin( bitmap.GetFormat(), reinterpret_cast<const uint8_t*>( bitmap.GetRawData() ), bitmap.GetWidth(), bitmap.GetHeight(), margin, pixels, pitch );

	const auto result = texture.UpdateSubresource( Tr2TextureSubresource( 0 ).SetRect( x, y, x + bitmap.GetWidth() + 2 * margin, y + bitmap.GetHeight() + 2 * margin ), &pixels[0], pitch, 0, renderContext );
	if( FAILED( result ) )
	{
		CCP_LOGERR( "Tr2ImageHandler::CopyToTexture - UpdateSubresource failed [margin]: %08x", result.GetResult() );
	}
	return SUCCEEDED( result );
}


void AddMargin( const Tr2RenderContextEnum::PixelFormat format,