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--- ubuntu:gpu:vulkan:vulkan_try_new_version [2023/08/02 23:12] – peter
+++ ubuntu:gpu:vulkan:vulkan_try_new_version [2023/08/03 00:14] (current) – peter
@@ Line 27: / Line 27: @@
 ===== Build the loader =====
+<code bash>
+sudo apt-get update && sudo apt-get install git build-essential libx11-xcb-dev libxkbcommon-dev libwayland-dev libxrandr-dev cmake
+git clone https://github.com/KhronosGroup/Vulkan-Loader.git
+cd Vulkan-Loader
+mkdir build
+cd build
+python ../scripts/update_deps.py
+cmake -C helper.cmake ..
+cmake --build .
+</code>
+or for tests...
+<code bash>
+cmake -D UPDATE_DEPS=ON -D BUILD_TESTS=ON ..
+cmake --build .
+ctest
+</code>
+or for install...
 <code bash>
@@ Line 32: / Line 54: @@
 git clone https://github.com/KhronosGroup/Vulkan-Loader.git
 cd Vulkan-Loader && mkdir build && cd build
-../scripts/update_deps.py
+python3 ../scripts/update_deps.py
 cmake -DCMAKE_BUILD_TYPE=Release -DVULKAN_HEADERS_INSTALL_DIR=$(pwd)/Vulkan-Headers/build/install ..
 make -j8
@@ Line 44: / Line 66: @@
 cmake --build .
 </code>
+  * **CMAKE_BUILD_TYPE**:  can be **Release** or **Debug**.
+  * **VULKAN_HEADERS_INSTALL_DIR**:  the absolute path to a Vulkan-Headers install directory must be provided.
+  * **CMAKE_INSTALL_PREFIX**:  to customize the install location also modifies the loader search paths to include searching for layers in the specified install location.
+    * The default value for CMAKE_INSTALL_PREFIX is /usr/local, which would be used if you do not specify CMAKE_INSTALL_PREFIX.
+    * Setting CMAKE_INSTALL_PREFIX to /tmp/build causes the loader to search /tmp/build/etc/vulkan/explicit_layer.d and /tmp/build/share/vulkan/explicit_layer.d for the layer JSON files.
+    * The loader also searches the "standard" system locations of /etc/vulkan/explicit_layer.d and /usr/share/vulkan/explicit_layer.d after searching the two locations under /tmp/build.
+    * Then run make install as before, which will install the files in /tmp/build <code bash>sudo make install</code>
 </WRAP>
@@ Line 94: / Line 124: @@
 LD_LIBRARY_PATH=/home/peter/Downloads/0/a/Vulkan-Tools-main/build/Vulkan-Loader/build/loader/ vulkaninfo | grep driver
+</code>
+----
+===== Test =====
+A test suite for the Vulkan loader.
+<code bash>
+ctest
+</code>
+returns:
+<code bash>
+Test project /home/peter/Downloads/0/a/Vulkan-Loader-main/build
+        Start   1: Allocation.Instance
+/538 Test   #1: Allocation.Instance .............................................................................   Passed    0.01 sec
+        Start   2: Allocation.GetInstanceProcAddr
+/538 Test   #2: Allocation.GetInstanceProcAddr ..................................................................   Passed    0.01 sec
+        Start   3: Allocation.EnumeratePhysicalDevices
+/538 Test   #3: Allocation.EnumeratePhysicalDevices .............................................................   Passed    0.01 sec
+        Start   4: Allocation.InstanceAndDevice
+/538 Test   #4: Allocation.InstanceAndDevice ....................................................................   Passed    0.01 sec
+        Start   5: Allocation.InstanceButNotDevice
+/538 Test   #5: Allocation.InstanceButNotDevice .................................................................   Passed    0.01 sec
+        Start   6: Allocation.DeviceButNotInstance
+...
+...
+% tests passed, 0 tests failed out of 538
+Total Test time (real) =  10.89 sec
 </code>