mirror of
https://github.com/gnif/LookingGlass.git
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103 lines
3.3 KiB
Markdown
103 lines
3.3 KiB
Markdown
# General Questions
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## What is this?
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This is a rewrite of the host application in pure C using the MinGW toolchain.
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## Why make this?
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Several reasons:
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1. The client is written in C and I would like to unify the project's language
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2. The host is currently hard to build using MinGW and is very Windows specific
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3. The host is a jumbled mess of code from all the experimentation going on
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4. I would eventually like to be able to port this to run on Linux guests
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## When will it be ready?
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Soon :)
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## Will it replace the C++ host?
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Yes, but only when it is feature complete.
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## Why doesn't this use CMake?
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It does now...
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~~Because win-builds doesn't distribute it, so to make it easy for everyone to compile we do not require it.~~
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## How do I build it?
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#### For Windows on Windows
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```
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mkdir build
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cd build
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cmake -G "MSYS Makefiles" ..
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make
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```
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#### For Linux on Linux
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```
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mkdir build
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cd build
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cmake ..
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make
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```
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#### For Windows cross compiling on Linux
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```
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mkdir build
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cd build
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cmake -DCMAKE_TOOLCHAIN_FILE=../toolchain-mingw64.cmake ..
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make
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```
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## Where is the log?
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It is in your user's temp directory:
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%TEMP%\looking-glass-host.txt
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For example:
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C:\Users\YourUser\AppData\Local\Temp\looking-glass-host.txt
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You can also open it by simply right clicking the tray icon and selecting "Open Log File"
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## Why does this version require Administrator privileges
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This is intentional for several reasons.
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1. NvFBC requires a system wide hook to correctly obtain the cursor position as NVIDIA decided to not provide this as part of the cursor updates.
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2. NvFBC requires administrator level access to enable the interface in the first place. (WIP)
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3. DXGI performance can be improved if we have this. (WIP)
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## NvFBC (NVIDIA Frame Buffer Capture)
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### Why isn't there a build with NvFBC support available.
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~~Because NVIDIA have decided to put restrictions on the NvFBC API that simply make it incompatible with the GPL/2 licence. Providing a pre-built binary with NvFBC support would violate the EULA I have agreed to in order to access the NVidia Capture SDK.~~
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Either I miss-read the License Agreement or it has been updated, it is now viable to produce a "derived work" from the capture SDK.
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> 1.1 License Grant. Subject to the terms of this Agreement, NVIDIA hereby grants you a nonexclusive, non-transferable, worldwide,
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revocable, limited, royalty-free, fully paid-up license during the term of this Agreement to:
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> (i) install, use and reproduce the Licensed Software delivered by NVIDIA plus make modifications and create derivative
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works of the source code and header files delivered by NVIDIA, provided that the software is executed only in hardware products as
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specified by NVIDIA in the accompanying documentation (such as release notes) as supported, to develop, test and service your
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products (each, a “Customer Product”) that are interoperable with supported hardware products. If the NVIDIA documentation is
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silent, the supported hardware consists of certain NVIDIA GPUs; and
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To be safe we are still not including the NVIDIA headers in the repository, but I am now providing pre-built binaries with NvFBC support included.
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See: https://looking-glass.hostfission.com/downloads
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### Why can't I compile NvFBC support into the host
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You must download and install the NVidia Capture SDK. Please note that by doing so you will be agreeing to NVIDIA's SDK License agreement.
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_-Geoff_
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