message: Add 'free' to support extensions
diff: @@ -690,6 +690,10 @@ static const VkExtensionProperties supportedExtensions[] = {
  {
  VK_AMD_GCN_SHADER_EXTENSION_NAME, VK_AMD_GCN_SHADER_SPEC_VERSION,
  },
  + // this extension is 'free' - it just marks SPIR-V extension availability
  + {
  + VK_AMD_GPU_SHADER_HALF_FLOAT_EXTENSION_NAME, VK_AMD_GPU_SHADER_HALF_FLOAT_SPEC_VERSION,
  + },
  {
  VK_AMD_NEGATIVE_VIEWPORT_HEIGHT_EXTENSION_NAME, VK_AMD_NEGATIVE_VIEWPORT_HEIGHT_SPEC_VERSION,
  },
  @@ -709,6 +713,20 @@ static const VkExtensionProperties supportedExtensions[] = {
  {
  VK_EXT_DEBUG_REPORT_EXTENSION_NAME, VK_EXT_DEBUG_REPORT_SPEC_VERSION,
  },
  + // this extension is 'free' - it just marks SPIR-V extension availability
  + {
  + VK_EXT_SHADER_SUBGROUP_BALLOT_EXTENSION_NAME, VK_EXT_SHADER_SUBGROUP_BALLOT_SPEC_VERSION,
  + },
  + // this extension is 'free' - it just marks SPIR-V extension availability
  + {
  + VK_EXT_SHADER_SUBGROUP_VOTE_EXTENSION_NAME, VK_EXT_SHADER_SUBGROUP_BALLOT_SPEC_VERSION,
  + },
  + {
  + VK_EXT_SWAPCHAIN_COLOR_SPACE_EXTENSION_NAME, VK_EXT_SWAPCHAIN_COLOR_SPACE_SPEC_VERSION,
  + },
  + {
  + VK_EXT_VALIDATION_FLAGS_EXTENSION_NAME, VK_EXT_VALIDATION_FLAGS_SPEC_VERSION,
  + },
  #ifdef VK_KHR_android_surface
  {
  VK_KHR_ANDROID_SURFACE_EXTENSION_NAME, VK_KHR_ANDROID_SURFACE_SPEC_VERSION,
  @@ -731,6 +749,10 @@ static const VkExtensionProperties supportedExtensions[] = {
  VK_KHR_SAMPLER_MIRROR_CLAMP_TO_EDGE_EXTENSION_NAME,
  VK_KHR_SAMPLER_MIRROR_CLAMP_TO_EDGE_SPEC_VERSION,
  },
  + // this extension is 'free' - it just marks SPIR-V extension availability
  + {
  + VK_KHR_SHADER_DRAW_PARAMETERS_EXTENSION_NAME, VK_KHR_SHADER_DRAW_PARAMETERS_SPEC_VERSION,
  + },
  {
  VK_KHR_SURFACE_EXTENSION_NAME, VK_KHR_SURFACE_SPEC_VERSION,
  },
  