Atlas - SDL_androidvulkan.c
Home / ext / SDL2 / src / video / android Lines: 1 | Size: 6359 bytes [Download] [Show on GitHub] [Search similar files] [Raw] [Raw (proxy)][FILE BEGIN]1/* 2 Simple DirectMedia Layer 3 Copyright (C) 1997-2018 Sam Lantinga <[email protected]> 4 5 This software is provided 'as-is', without any express or implied 6 warranty. In no event will the authors be held liable for any damages 7 arising from the use of this software. 8 9 Permission is granted to anyone to use this software for any purpose, 10 including commercial applications, and to alter it and redistribute it 11 freely, subject to the following restrictions: 12 13 1. The origin of this software must not be misrepresented; you must not 14 claim that you wrote the original software. If you use this software 15 in a product, an acknowledgment in the product documentation would be 16 appreciated but is not required. 17 2. Altered source versions must be plainly marked as such, and must not be 18 misrepresented as being the original software. 19 3. This notice may not be removed or altered from any source distribution. 20*/ 21 22/* 23 * @author Mark Callow, www.edgewise-consulting.com. Based on Jacob Lifshay's 24 * SDL_x11vulkan.c. 25 */ 26 27#include "../../SDL_internal.h" 28 29#if SDL_VIDEO_VULKAN && SDL_VIDEO_DRIVER_ANDROID 30 31#include "SDL_androidvideo.h" 32#include "SDL_androidwindow.h" 33#include "SDL_assert.h" 34 35#include "SDL_loadso.h" 36#include "SDL_androidvulkan.h" 37#include "SDL_syswm.h" 38 39int Android_Vulkan_LoadLibrary(_THIS, const char *path) 40{ 41 VkExtensionProperties *extensions = NULL; 42 Uint32 i, extensionCount = 0; 43 SDL_bool hasSurfaceExtension = SDL_FALSE; 44 SDL_bool hasAndroidSurfaceExtension = SDL_FALSE; 45 PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr = NULL; 46 if(_this->vulkan_config.loader_handle) 47 return SDL_SetError("Vulkan already loaded"); 48 49 /* Load the Vulkan loader library */ 50 if(!path) 51 path = SDL_getenv("SDL_VULKAN_LIBRARY"); 52 if(!path) 53 path = "libvulkan.so"; 54 _this->vulkan_config.loader_handle = SDL_LoadObject(path); 55 if(!_this->vulkan_config.loader_handle) 56 return -1; 57 SDL_strlcpy(_this->vulkan_config.loader_path, path, 58 SDL_arraysize(_this->vulkan_config.loader_path)); 59 vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr)SDL_LoadFunction( 60 _this->vulkan_config.loader_handle, "vkGetInstanceProcAddr"); 61 if(!vkGetInstanceProcAddr) 62 goto fail; 63 _this->vulkan_config.vkGetInstanceProcAddr = (void *)vkGetInstanceProcAddr; 64 _this->vulkan_config.vkEnumerateInstanceExtensionProperties = 65 (void *)((PFN_vkGetInstanceProcAddr)_this->vulkan_config.vkGetInstanceProcAddr)( 66 VK_NULL_HANDLE, "vkEnumerateInstanceExtensionProperties"); 67 if(!_this->vulkan_config.vkEnumerateInstanceExtensionProperties) 68 goto fail; 69 extensions = SDL_Vulkan_CreateInstanceExtensionsList( 70 (PFN_vkEnumerateInstanceExtensionProperties) 71 _this->vulkan_config.vkEnumerateInstanceExtensionProperties, 72 &extensionCount); 73 if(!extensions) 74 goto fail; 75 for(i = 0; i < extensionCount; i++) 76 { 77 if(SDL_strcmp(VK_KHR_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0) 78 hasSurfaceExtension = SDL_TRUE; 79 else if(SDL_strcmp(VK_KHR_ANDROID_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0) 80 hasAndroidSurfaceExtension = SDL_TRUE; 81 } 82 SDL_free(extensions); 83 if(!hasSurfaceExtension) 84 { 85 SDL_SetError("Installed Vulkan doesn't implement the " 86 VK_KHR_SURFACE_EXTENSION_NAME " extension"); 87 goto fail; 88 } 89 else if(!hasAndroidSurfaceExtension) 90 { 91 SDL_SetError("Installed Vulkan doesn't implement the " 92 VK_KHR_ANDROID_SURFACE_EXTENSION_NAME "extension"); 93 goto fail; 94 } 95 return 0; 96 97fail: 98 SDL_UnloadObject(_this->vulkan_config.loader_handle); 99 _this->vulkan_config.loader_handle = NULL; 100 return -1; 101} 102 103void Android_Vulkan_UnloadLibrary(_THIS) 104{ 105 if(_this->vulkan_config.loader_handle) 106 { 107 SDL_UnloadObject(_this->vulkan_config.loader_handle); 108 _this->vulkan_config.loader_handle = NULL; 109 } 110} 111 112SDL_bool Android_Vulkan_GetInstanceExtensions(_THIS, 113 SDL_Window *window, 114 unsigned *count, 115 const char **names) 116{ 117 static const char *const extensionsForAndroid[] = { 118 VK_KHR_SURFACE_EXTENSION_NAME, VK_KHR_ANDROID_SURFACE_EXTENSION_NAME 119 }; 120 if(!_this->vulkan_config.loader_handle) 121 { 122 SDL_SetError("Vulkan is not loaded"); 123 return SDL_FALSE; 124 } 125 return SDL_Vulkan_GetInstanceExtensions_Helper( 126 count, names, SDL_arraysize(extensionsForAndroid), 127 extensionsForAndroid); 128} 129 130SDL_bool Android_Vulkan_CreateSurface(_THIS, 131 SDL_Window *window, 132 VkInstance instance, 133 VkSurfaceKHR *surface) 134{ 135 SDL_WindowData *windowData = (SDL_WindowData *)window->driverdata; 136 PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr = 137 (PFN_vkGetInstanceProcAddr)_this->vulkan_config.vkGetInstanceProcAddr; 138 PFN_vkCreateAndroidSurfaceKHR vkCreateAndroidSurfaceKHR = 139 (PFN_vkCreateAndroidSurfaceKHR)vkGetInstanceProcAddr( 140 (VkInstance)instance, 141 "vkCreateAndroidSurfaceKHR"); 142 VkAndroidSurfaceCreateInfoKHR createInfo; 143 VkResult result; 144 145 if(!_this->vulkan_config.loader_handle) 146 { 147 SDL_SetError("Vulkan is not loaded"); 148 return SDL_FALSE; 149 } 150 151 if(!vkCreateAndroidSurfaceKHR) 152 { 153 SDL_SetError(VK_KHR_ANDROID_SURFACE_EXTENSION_NAME 154 " extension is not enabled in the Vulkan instance."); 155 return SDL_FALSE; 156 } 157 SDL_zero(createInfo); 158 createInfo.sType = VK_STRUCTURE_TYPE_ANDROID_SURFACE_CREATE_INFO_KHR; 159 createInfo.pNext = NULL; 160 createInfo.flags = 0; 161 createInfo.window = windowData->native_window; 162 result = vkCreateAndroidSurfaceKHR(instance, &createInfo, 163 NULL, surface); 164 if(result != VK_SUCCESS) 165 { 166 SDL_SetError("vkCreateAndroidSurfaceKHR failed: %s", 167 SDL_Vulkan_GetResultString(result)); 168 return SDL_FALSE; 169 } 170 return SDL_TRUE; 171} 172 173#endif 174 175/* vi: set ts=4 sw=4 expandtab: */ 176[FILE END](C) 2025 0x4248 (C) 2025 4248 Media and 4248 Systems, All part of 0x4248 See LICENCE files for more information. 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