| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "include/gpu/vk/VulkanExtensions.h" |
| |
| #include "src/base/SkTSearch.h" |
| #include "src/base/SkTSort.h" |
| |
| namespace skgpu { |
| |
| // finds the index of ext in infos or a negative result if ext is not found. |
| static int find_info(const SkTArray<VulkanExtensions::Info>& infos, const char ext[]) { |
| if (infos.empty()) { |
| return -1; |
| } |
| SkString extensionStr(ext); |
| VulkanExtensions::Info::Less less; |
| int idx = SkTSearch<VulkanExtensions::Info, SkString, VulkanExtensions::Info::Less>( |
| &infos.front(), infos.size(), extensionStr, sizeof(VulkanExtensions::Info), |
| less); |
| return idx; |
| } |
| |
| namespace { // This cannot be static because it is used as a template parameter. |
| inline bool extension_compare(const VulkanExtensions::Info& a, const VulkanExtensions::Info& b) { |
| return strcmp(a.fName.c_str(), b.fName.c_str()) < 0; |
| } |
| } // namespace |
| |
| void VulkanExtensions::init(VulkanGetProc getProc, |
| VkInstance instance, |
| VkPhysicalDevice physDev, |
| uint32_t instanceExtensionCount, |
| const char* const* instanceExtensions, |
| uint32_t deviceExtensionCount, |
| const char* const* deviceExtensions) { |
| for (uint32_t i = 0; i < instanceExtensionCount; ++i) { |
| const char* extension = instanceExtensions[i]; |
| // if not already in the list, add it |
| if (find_info(fExtensions, extension) < 0) { |
| fExtensions.push_back() = Info(extension); |
| SkTQSort(fExtensions.begin(), fExtensions.end(), extension_compare); |
| } |
| } |
| for (uint32_t i = 0; i < deviceExtensionCount; ++i) { |
| const char* extension = deviceExtensions[i]; |
| // if not already in the list, add it |
| if (find_info(fExtensions, extension) < 0) { |
| fExtensions.push_back() = Info(extension); |
| SkTQSort(fExtensions.begin(), fExtensions.end(), extension_compare); |
| } |
| } |
| this->getSpecVersions(getProc, instance, physDev); |
| } |
| |
| #define GET_PROC(F, inst) \ |
| PFN_vk##F grVk##F = (PFN_vk ## F) getProc("vk" #F, inst, VK_NULL_HANDLE) |
| |
| void VulkanExtensions::getSpecVersions(VulkanGetProc getProc, |
| VkInstance instance, |
| VkPhysicalDevice physDevice) { |
| // We grab all the extensions for the VkInstance and VkDevice so we can look up what spec |
| // version each of the supported extensions are. We do not grab the extensions for layers |
| // because we don't know what layers the client has enabled and in general we don't do anything |
| // special for those extensions. |
| |
| if (instance == VK_NULL_HANDLE) { |
| return; |
| } |
| GET_PROC(EnumerateInstanceExtensionProperties, VK_NULL_HANDLE); |
| SkASSERT(grVkEnumerateInstanceExtensionProperties); |
| |
| VkResult res; |
| // instance extensions |
| uint32_t extensionCount = 0; |
| res = grVkEnumerateInstanceExtensionProperties(nullptr, &extensionCount, nullptr); |
| if (VK_SUCCESS != res) { |
| return; |
| } |
| VkExtensionProperties* extensions = new VkExtensionProperties[extensionCount]; |
| res = grVkEnumerateInstanceExtensionProperties(nullptr, &extensionCount, extensions); |
| if (VK_SUCCESS != res) { |
| delete[] extensions; |
| return; |
| } |
| for (uint32_t i = 0; i < extensionCount; ++i) { |
| int idx = find_info(fExtensions, extensions[i].extensionName); |
| if (idx >= 0) { |
| fExtensions[idx].fSpecVersion = extensions[i].specVersion; |
| } |
| } |
| delete[] extensions; |
| |
| if (physDevice == VK_NULL_HANDLE) { |
| return; |
| } |
| GET_PROC(EnumerateDeviceExtensionProperties, instance); |
| SkASSERT(grVkEnumerateDeviceExtensionProperties); |
| |
| // device extensions |
| extensionCount = 0; |
| res = grVkEnumerateDeviceExtensionProperties(physDevice, nullptr, &extensionCount, nullptr); |
| if (VK_SUCCESS != res) { |
| return; |
| } |
| extensions = new VkExtensionProperties[extensionCount]; |
| res = grVkEnumerateDeviceExtensionProperties(physDevice, nullptr, &extensionCount, extensions); |
| if (VK_SUCCESS != res) { |
| delete[] extensions; |
| return; |
| } |
| for (uint32_t i = 0; i < extensionCount; ++i) { |
| int idx = find_info(fExtensions, extensions[i].extensionName); |
| if (idx >= 0) { |
| fExtensions[idx].fSpecVersion = extensions[i].specVersion; |
| } |
| } |
| delete[] extensions; |
| } |
| |
| bool VulkanExtensions::hasExtension(const char ext[], uint32_t minVersion) const { |
| int idx = find_info(fExtensions, ext); |
| return idx >= 0 && fExtensions[idx].fSpecVersion >= minVersion; |
| } |
| |
| } // namespace skgpu |