clover: add platform supported extensions with version

Reviewed-by: Karol Herbst <kherbst@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7520>

src/gallium/frontends/clover/api/platform.cpp

@@ -86,6 +86,10 @@ clover::GetPlatformInfo(cl_platform_id d_platform, cl_platform_info param,
       break;
    }
 
+   case CL_PLATFORM_EXTENSIONS_WITH_VERSION:
+      buf.as_vector<cl_name_version>() = platform.supported_extensions();
+      break;
+
    default:
       throw error(CL_INVALID_VALUE);
    }

src/gallium/frontends/clover/core/platform.cpp

@@ -45,9 +45,28 @@ platform::platform() : adaptor_range(evals(), devs) {
    }
 }
 
+std::vector<cl_name_version>
+platform::supported_extensions() const {
+   std::vector<cl_name_version> vec;
+
+   vec.push_back( (cl_name_version){ CL_MAKE_VERSION(1, 0, 0), "cl_khr_icd" } );
+   return vec;
+}
+
 std::string
 platform::supported_extensions_as_string() const {
-   return "cl_khr_icd";
+   static std::string extensions_string;
+
+   if (!extensions_string.empty())
+      return extensions_string;
+
+   const auto extension_list = supported_extensions();
+   for (const auto &extension : extension_list) {
+      if (!extensions_string.empty())
+         extensions_string += " ";
+      extensions_string += extension.name;
+   }
+   return extensions_string;
 }
 
 std::string

src/gallium/frontends/clover/core/platform.hpp

@@ -41,6 +41,7 @@ namespace clover {
       operator=(const platform &platform) = delete;
 
       std::string supported_extensions_as_string() const;
+      std::vector<cl_name_version> supported_extensions() const;
 
       std::string platform_version_as_string() const;
       cl_version platform_version() const;