layers: Move CV::DeviceExtensions into helper
diff --git a/layers/device_extensions.h b/layers/device_extensions.h
new file mode 100644
index 0000000..200aa70
--- /dev/null
+++ b/layers/device_extensions.h
@@ -0,0 +1,68 @@
+/* Copyright (c) 2015-2016 The Khronos Group Inc.
+ * Copyright (c) 2015-2016 Valve Corporation
+ * Copyright (c) 2015-2016 LunarG, Inc.
+ * Copyright (C) 2015-2016 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * Author: Chris Forbes <chrisforbes@google.com>
+ */
+#ifndef DEVICE_EXTENSIONS_H_
+#define DEVICE_EXTENSIONS_H_
+
+struct DeviceExtensions {
+ bool khr_swapchain;
+ bool khr_display_swapchain;
+ bool nv_glsl_shader;
+ bool khr_descriptor_update_template;
+ bool khr_shader_draw_parameters;
+ bool khr_maintenance1;
+ bool nv_geometry_shader_passthrough;
+ bool nv_sample_mask_override_coverage;
+ bool nv_viewport_array2;
+ bool khr_subgroup_ballot;
+ bool khr_subgroup_vote;
+
+ void InitFromDeviceCreateInfo(const VkDeviceCreateInfo *pCreateInfo) {
+ using E = DeviceExtensions;
+
+ static const std::pair<char const *, bool E::*> known_extensions[]{
+ {VK_KHR_SWAPCHAIN_EXTENSION_NAME, &E::khr_swapchain},
+ {VK_KHR_DISPLAY_SWAPCHAIN_EXTENSION_NAME, &E::khr_display_swapchain},
+ {VK_NV_GLSL_SHADER_EXTENSION_NAME, &E::nv_glsl_shader},
+ {VK_KHR_DESCRIPTOR_UPDATE_TEMPLATE_EXTENSION_NAME, &E::khr_descriptor_update_template},
+ {VK_KHR_SHADER_DRAW_PARAMETERS_EXTENSION_NAME, &E::khr_shader_draw_parameters},
+ {VK_KHR_MAINTENANCE1_EXTENSION_NAME, &E::khr_maintenance1},
+ {VK_NV_GEOMETRY_SHADER_PASSTHROUGH_EXTENSION_NAME, &E::nv_geometry_shader_passthrough},
+ {VK_NV_SAMPLE_MASK_OVERRIDE_COVERAGE_EXTENSION_NAME, &E::nv_sample_mask_override_coverage},
+ {VK_NV_VIEWPORT_ARRAY2_EXTENSION_NAME, &E::nv_viewport_array2},
+ {VK_EXT_SHADER_SUBGROUP_BALLOT_EXTENSION_NAME, &E::khr_subgroup_ballot},
+ {VK_EXT_SHADER_SUBGROUP_VOTE_EXTENSION_NAME, &E::khr_subgroup_vote},
+ };
+
+ for (auto ext : known_extensions) {
+ this->*(ext.second) = false;
+ }
+
+ for (uint32_t i = 0; i < pCreateInfo->enabledExtensionCount; i++) {
+ for (auto ext : known_extensions) {
+ if (!strcmp(ext.first, pCreateInfo->ppEnabledExtensionNames[i])) {
+ this->*(ext.second) = true;
+ break;
+ }
+ }
+ }
+ }
+};
+
+#endif
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