Function GetUncompressedBitmap

trinity/UI/Tr2MouseCursor.cpp:221–252

}

std::unique_ptr<char[]> GetUncompressedBitmap( const Tr2HostBitmap* bitmap )
{
	std::unique_ptr<char[]> bits( new char[bitmap->GetWidth() * bitmap->GetHeight() * 4] );
	switch( bitmap->GetFormat() )
	{
	case Tr2RenderContextEnum::PIXEL_FORMAT_BC1_TYPELESS:
	case Tr2RenderContextEnum::PIXEL_FORMAT_BC1_UNORM:
	case Tr2RenderContextEnum::PIXEL_FORMAT_BC1_UNORM_SRGB:
		DecompressBC1( bits.get(), bitmap->GetRawData(), bitmap->GetWidth(), bitmap->GetHeight(), bitmap->GetWidth() * sizeof( uint32_t ) );
		break;

	case Tr2RenderContextEnum::PIXEL_FORMAT_BC2_TYPELESS:
	case Tr2RenderContextEnum::PIXEL_FORMAT_BC2_UNORM:
	case Tr2RenderContextEnum::PIXEL_FORMAT_BC2_UNORM_SRGB:
		DecompressBC2( bits.get(), bitmap->GetRawData(), bitmap->GetWidth(), bitmap->GetHeight(), bitmap->GetWidth() * sizeof( uint32_t ) );
		break;
	case Tr2RenderContextEnum::PIXEL_FORMAT_B8G8R8A8_TYPELESS:
	case Tr2RenderContextEnum::PIXEL_FORMAT_B8G8R8A8_UNORM:
	case Tr2RenderContextEnum::PIXEL_FORMAT_B8G8R8A8_UNORM_SRGB: {
		const char* row = bitmap->GetRawData();
		for( uint32_t j = 0; j < bitmap->GetHeight(); ++j )
		{
			memcpy( bits.get() + j * bitmap->GetWidth() * 4, row, bitmap->GetWidth() * 4 );
			row += bitmap->GetPitch();
		}
	}
	break;
	default:
		return nullptr;
	}
	return bits;
}

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