Render CTS progress in readme

README.md

@@ -7,7 +7,11 @@
 
 SimSYCL is a single-threaded, synchronous, library-only implementation of the SYCL 2020 specification. It enables you to test your SYCL applications against simulated hardware of different characteristics and discover bugs with its extensive verification capabilities.
 
-SimSYCL is in a very early stage of development - try it at your own risk!
+## Implementation progress
+
+SimSYCL is still under development, but it already passes a large portion of the [SYCL Conformance Test Suite](https://github.com/KhronosGroup/SYCL-CTS):
+
+![SYCL spec conformance by CTS test suites passed](resources/cts_state.svg)
 
 ## Requirements
 
@@ -22,7 +26,7 @@ The following platform and compiler combinations are currently tested in CI:
  * Windows with MSVC 14
  * MacOS with GCC 13
 
-Other platforms and compilers should also work, as long as they have sufficient C++20 support.  
+Other platforms and compilers should also work, as long as they have sufficient C++20 support.
 Note that Clang versions prior to 17 do not currently work due to their incomplete CTAD support.
 
 ## Acknowlegments

ci/render_cts_state.py

@@ -0,0 +1,27 @@
+import os
+
+import pandas as pd
+from matplotlib import pyplot as plt
+
+os.chdir(os.path.join(os.path.dirname(__file__), os.path.pardir))
+
+state = pd.read_csv('ci/cts_state.csv', delimiter=';')
+counts = state.groupby('status').agg(count=('suite', 'size'))['count'].to_dict()
+
+labels = ['passed', 'run failed', 'build failed', 'not applicable']
+colors = ['#4a0', '#fa0', '#e44', '#aaa']
+
+fig, ax = plt.subplots(figsize=(8, 0.6))
+left = 0
+for l, c in zip(labels, colors):
+    n = counts[l]
+    ax.barh(0, n, left=left, color=c, label=l)
+    ax.text(left + n/2, 0, str(n), ha='center', va='center', weight='bold')
+    left += n
+ax.set_xlim(0, left)
+ax.axis('off')
+ax.set_title('SYCL spec conformance by CTS test suite count')
+
+fig.legend(loc='lower center', ncols=len(labels),
+           bbox_to_anchor=(0, -0.4, 1, 0.5), frameon=False)
+fig.savefig('resources/cts_state.svg', bbox_inches='tight')