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Artem Kharytoniuk 2017-12-25 19:54:15 +01:00
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@ -10,22 +10,25 @@ The general direction is to simplify the things. The codebase should be easy to
* Build `visual-studio/quake3.sln` solution.
* Copy `quake3-ke.exe` to your local Quake-III-Arena installation folder.
## Vulkan support
## Vulkan and DX12 support
Vulkan backend provides the same graphics features as original OpenGL-based one including customization via r_xxx cvars and debug visualization.
Make sure that the latest AMD/NVIDIA drivers are installed. Vulkan backend was tested on AMD and NVIDIA hardware. Unfortunately no guarantees for Intel GPUs - there is no vulkan support for my 4790K Haswell processor.
Initially DirectX 12 backend was an exercise to learn this graphics API. It turned out the implementation is quite concise, so it was merged into the main branch.
#### New cvars:
* **r_renderAPI** - 3D API to use: 0 - OpenGL, 1 - Vulkan. Requires vid_restart.
* **r_renderAPI** - 3D API to use: 0 - OpenGL, 1 - Vulkan, 2 - DX12. Requires vid_restart.
* **r_twinMode** - Debug feature to compare rendering output between OpenGL and Vulkan APIs.
If enabled, renderer uses both APIs and renders current frame to two side-by-side windows.
Requires vid_restart.
* **r_twinMode** - Debug feature to compare rendering output between OpenGL/Vulkan/DX12 APIs.
If enabled, renderer uses multiple APIs and renders current frame to two or three side-by-side windows. Requires vid_restart.
*r_twinMode* is a bitmask. The following values can be combined to enable different graphics backends: 1 - OpenGL, 2 - Vulkan, 4 - DX12. For example: r_twinMode=7 (1+2+4) - enables all backends and renders to 3 windows. r_twinMode=3 (1+2) - enables OpenGL and Vulkan backends and renders to 2 windows.
#### Additional information:
* Q: How to start game with vulkan support? A: `quake3-ke.exe +set r_renderAPI 1`.
* Q: How to enable vulkan support from Q3 console? A: `\r_renderAPI 1` then `\vid_restart`.
* Q: How to enable twin mode from Q3 console? A: `\r_twinMode 1` then `\vid_restart`.
* Q: How to enable twin mode from Q3 console? A: `\r_twinMode 7` then `\vid_restart`.
* Q: How to check that Vulkan backend is really active? A: `gfxinfo` console command reports information about active rendering backend.
## Visual Studio