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Update README.md

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jaxl 2021-04-07 15:57:56 +08:00
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README.md
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@ -141,15 +141,27 @@ repo sync
> **Note:** Source code in dev branch can be gotten by using "-b dev" in the "repo init" command
### Build Driver (64-bit, Release)
### Build Driver and Generate JSON Files
#### Ubuntu
```
cmake -G Ninja -S drivers/xgl -B drivers/xgl/builds/Release64
cmake -G Ninja -S drivers/xgl -B drivers/xgl/builds/Release64 -DCMAKE_INSTALL_PREFIX=/usr/lib/ -DCMAKE_INSTALL_LIBDIR=x86_64-linux-gnu
ninja -C drivers/xgl/builds/Release64
cmake -G Ninja -S drivers/xgl -B drivers/xgl/builds/Release32 -DCMAKE_C_FLAGS=-m32 -DCMAKE_CXX_FLAGS=-m32 -DCMAKE_INSTALL_PREFIX=/usr/lib/ -DCMAKE_INSTALL_LIBDIR=i386-linux-gnu
ninja -C drivers/xgl/builds/Release32
```
#### RedHat
```
cmake -G Ninja -S drivers/xgl -B drivers/xgl/builds/Release64 -DCMAKE_INSTALL_PREFIX=/usr/ -DCMAKE_INSTALL_LIBDIR=lib64
ninja -C drivers/xgl/builds/Release64
cmake -G Ninja -S drivers/xgl -B drivers/xgl/builds/Release32 -DCMAKE_C_FLAGS=-m32 -DCMAKE_CXX_FLAGS=-m32 -DCMAKE_INSTALL_PREFIX=/usr/ -DCMAKE_INSTALL_LIBDIR=lib
ninja -C drivers/xgl/builds/Release32
```
> **Note:**
* For RedHat 7.x, please use cmake3(>= 3.13.4) instead of cmake.
* For debug build, use `-DCMAKE_BUILD_TYPE=Debug -DLLVM_PARALLEL_LINK_JOBS=2` (Linking a debug build of llvm is very memory intensive, so we use only two parallel jobs).
* For 32-bit build, use `-DCMAKE_C_FLAGS=-m32 -DCMAKE_CXX_FLAGS=-m32`, and adjust build sub-directory accordingly (i.e. `Release32`).
* To enable Wayland support, use `-DBUILD_WAYLAND_SUPPORT=ON`.
## Installation Instructions
@ -161,18 +173,20 @@ You can download and install the SDK package [here](https://vulkan.lunarg.com/sd
```
sudo cp <vulkandriver_path>/drivers/xgl/builds/Release64/icd/amdvlk64.so /usr/lib/x86_64-linux-gnu/
sudo cp <vulkandriver_path>/drivers/xgl/builds/Release32/icd/amdvlk32.so /usr/lib/i386-linux-gnu/
sudo cp <vulkandriver_path>/drivers/AMDVLK/json/Ubuntu/* /etc/vulkan/icd.d/
sudo cp <vulkandriver_path>/drivers/xgl/builds/Release64/icd/amd-icd64.json /etc/vulkan/icd.d/
sudo cp <vulkandriver_path>/drivers/xgl/builds/Release32/icd/amd-icd32.json /etc/vulkan/icd.d/
```
#### RedHat
```
sudo cp <vulkandriver_path>/drivers/xgl/builds/Release64/icd/amdvlk64.so /usr/lib64/
sudo cp <vulkandriver_path>/drivers/xgl/builds/Release32/icd/amdvlk32.so /usr/lib/
sudo cp <vulkandriver_path>/drivers/AMDVLK/json/Redhat/* /etc/vulkan/icd.d/
sudo cp <vulkandriver_path>/drivers/xgl/builds/Release64/icd/amd-icd64.json /etc/vulkan/icd.d/
sudo cp <vulkandriver_path>/drivers/xgl/builds/Release32/icd/amd-icd32.json /etc/vulkan/icd.d/
```
**NOTE:** To make AMDVLK driver work correctly on system with both AMDVLK and RADV installed, AMD switchable graphics layer needs to be enabled by:
```
sudo ln -s /etc/vulkan/icd.d/amd_icd64.json etc/vulkan/implicit_layer.d/amd_icd64.json
sudo ln -s /etc/vulkan/icd.d/amd_icd32.json etc/vulkan/implicit_layer.d/amd_icd32.json
sudo ln -s /etc/vulkan/icd.d/amd_icd64.json /etc/vulkan/implicit_layer.d/amd_icd64.json
sudo ln -s /etc/vulkan/icd.d/amd_icd32.json /etc/vulkan/implicit_layer.d/amd_icd32.json
```
> By default, AMDVLK driver is enabled. You can switch the driver between AMDVLK and RADV by environment variable AMD_VULKAN_ICD = AMDVLK or RADV.