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https://github.com/glfw/glfw.git
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321 lines
11 KiB
C
321 lines
11 KiB
C
//========================================================================
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// GLFW 3.3 - www.glfw.org
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//------------------------------------------------------------------------
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// Copyright (c) 2002-2006 Marcus Geelnard
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// Copyright (c) 2006-2016 Camilla Löwy <elmindreda@glfw.org>
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would
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// be appreciated but is not required.
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//
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// 2. Altered source versions must be plainly marked as such, and must not
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// be misrepresented as being the original software.
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//
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// 3. This notice may not be removed or altered from any source
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// distribution.
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//
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//========================================================================
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#include "internal.h"
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#include <assert.h>
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#include <string.h>
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#include <stdlib.h>
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#define _GLFW_FIND_LOADER 1
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#define _GLFW_REQUIRE_LOADER 2
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//////////////////////////////////////////////////////////////////////////
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////// GLFW internal API //////
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//////////////////////////////////////////////////////////////////////////
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GLFWbool _glfwInitVulkan(int mode)
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{
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VkResult err;
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VkExtensionProperties* ep;
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uint32_t i, count;
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if (_glfw.vk.available)
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return GLFW_TRUE;
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#if !defined(_GLFW_VULKAN_STATIC)
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#if defined(_GLFW_WIN32)
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_glfw.vk.handle = _glfw_dlopen("vulkan-1.dll");
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#elif defined(_GLFW_COCOA)
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_glfw.vk.handle = _glfw_dlopen("libMoltenVK.dylib");
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#else
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_glfw.vk.handle = _glfw_dlopen("libvulkan.so.1");
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#endif
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if (!_glfw.vk.handle)
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{
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if (mode == _GLFW_REQUIRE_LOADER)
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_glfwInputError(GLFW_API_UNAVAILABLE, "Vulkan: Loader not found");
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return GLFW_FALSE;
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}
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_glfw.vk.GetInstanceProcAddr = (PFN_vkGetInstanceProcAddr)
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_glfw_dlsym(_glfw.vk.handle, "vkGetInstanceProcAddr");
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if (!_glfw.vk.GetInstanceProcAddr)
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{
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_glfwInputError(GLFW_API_UNAVAILABLE,
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"Vulkan: Loader does not export vkGetInstanceProcAddr");
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_glfwTerminateVulkan();
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return GLFW_FALSE;
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}
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_glfw.vk.EnumerateInstanceExtensionProperties = (PFN_vkEnumerateInstanceExtensionProperties)
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vkGetInstanceProcAddr(NULL, "vkEnumerateInstanceExtensionProperties");
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if (!_glfw.vk.EnumerateInstanceExtensionProperties)
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{
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_glfwInputError(GLFW_API_UNAVAILABLE,
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"Vulkan: Failed to retrieve vkEnumerateInstanceExtensionProperties");
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_glfwTerminateVulkan();
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return GLFW_FALSE;
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}
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#endif // _GLFW_VULKAN_STATIC
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err = vkEnumerateInstanceExtensionProperties(NULL, &count, NULL);
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if (err)
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{
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// NOTE: This happens on systems with a loader but without any Vulkan ICD
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if (mode == _GLFW_REQUIRE_LOADER)
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{
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_glfwInputError(GLFW_API_UNAVAILABLE,
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"Vulkan: Failed to query instance extension count: %s",
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_glfwGetVulkanResultString(err));
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}
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_glfwTerminateVulkan();
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return GLFW_FALSE;
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}
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ep = calloc(count, sizeof(VkExtensionProperties));
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err = vkEnumerateInstanceExtensionProperties(NULL, &count, ep);
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if (err)
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{
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_glfwInputError(GLFW_API_UNAVAILABLE,
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"Vulkan: Failed to query instance extensions: %s",
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_glfwGetVulkanResultString(err));
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free(ep);
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_glfwTerminateVulkan();
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return GLFW_FALSE;
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}
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for (i = 0; i < count; i++)
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{
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if (strcmp(ep[i].extensionName, "VK_KHR_surface") == 0)
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_glfw.vk.KHR_surface = GLFW_TRUE;
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#if defined(_GLFW_WIN32)
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else if (strcmp(ep[i].extensionName, "VK_KHR_win32_surface") == 0)
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_glfw.vk.KHR_win32_surface = GLFW_TRUE;
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#elif defined(_GLFW_COCOA)
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else if (strcmp(ep[i].extensionName, "VK_MVK_macos_surface") == 0)
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_glfw.vk.MVK_macos_surface = GLFW_TRUE;
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#elif defined(_GLFW_X11)
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else if (strcmp(ep[i].extensionName, "VK_KHR_xlib_surface") == 0)
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_glfw.vk.KHR_xlib_surface = GLFW_TRUE;
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else if (strcmp(ep[i].extensionName, "VK_KHR_xcb_surface") == 0)
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_glfw.vk.KHR_xcb_surface = GLFW_TRUE;
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#elif defined(_GLFW_WAYLAND)
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else if (strcmp(ep[i].extensionName, "VK_KHR_wayland_surface") == 0)
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_glfw.vk.KHR_wayland_surface = GLFW_TRUE;
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#elif defined(_GLFW_MIR)
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else if (strcmp(ep[i].extensionName, "VK_KHR_mir_surface") == 0)
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_glfw.vk.KHR_mir_surface = GLFW_TRUE;
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#endif
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}
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free(ep);
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_glfw.vk.available = GLFW_TRUE;
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_glfwPlatformGetRequiredInstanceExtensions(_glfw.vk.extensions);
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return GLFW_TRUE;
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}
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void _glfwTerminateVulkan(void)
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{
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#if !defined(_GLFW_VULKAN_STATIC)
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if (_glfw.vk.handle)
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_glfw_dlclose(_glfw.vk.handle);
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#endif
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}
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const char* _glfwGetVulkanResultString(VkResult result)
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{
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switch (result)
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{
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case VK_SUCCESS:
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return "Success";
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case VK_NOT_READY:
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return "A fence or query has not yet completed";
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case VK_TIMEOUT:
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return "A wait operation has not completed in the specified time";
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case VK_EVENT_SET:
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return "An event is signaled";
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case VK_EVENT_RESET:
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return "An event is unsignaled";
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case VK_INCOMPLETE:
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return "A return array was too small for the result";
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case VK_ERROR_OUT_OF_HOST_MEMORY:
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return "A host memory allocation has failed";
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case VK_ERROR_OUT_OF_DEVICE_MEMORY:
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return "A device memory allocation has failed";
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case VK_ERROR_INITIALIZATION_FAILED:
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return "Initialization of an object could not be completed for implementation-specific reasons";
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case VK_ERROR_DEVICE_LOST:
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return "The logical or physical device has been lost";
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case VK_ERROR_MEMORY_MAP_FAILED:
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return "Mapping of a memory object has failed";
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case VK_ERROR_LAYER_NOT_PRESENT:
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return "A requested layer is not present or could not be loaded";
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case VK_ERROR_EXTENSION_NOT_PRESENT:
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return "A requested extension is not supported";
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case VK_ERROR_FEATURE_NOT_PRESENT:
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return "A requested feature is not supported";
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case VK_ERROR_INCOMPATIBLE_DRIVER:
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return "The requested version of Vulkan is not supported by the driver or is otherwise incompatible";
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case VK_ERROR_TOO_MANY_OBJECTS:
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return "Too many objects of the type have already been created";
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case VK_ERROR_FORMAT_NOT_SUPPORTED:
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return "A requested format is not supported on this device";
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case VK_ERROR_SURFACE_LOST_KHR:
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return "A surface is no longer available";
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case VK_SUBOPTIMAL_KHR:
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return "A swapchain no longer matches the surface properties exactly, but can still be used";
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case VK_ERROR_OUT_OF_DATE_KHR:
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return "A surface has changed in such a way that it is no longer compatible with the swapchain";
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case VK_ERROR_INCOMPATIBLE_DISPLAY_KHR:
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return "The display used by a swapchain does not use the same presentable image layout";
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case VK_ERROR_NATIVE_WINDOW_IN_USE_KHR:
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return "The requested window is already connected to a VkSurfaceKHR, or to some other non-Vulkan API";
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case VK_ERROR_VALIDATION_FAILED_EXT:
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return "A validation layer found an error";
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default:
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return "ERROR: UNKNOWN VULKAN ERROR";
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}
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}
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//////////////////////////////////////////////////////////////////////////
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////// GLFW public API //////
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//////////////////////////////////////////////////////////////////////////
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GLFWAPI int glfwVulkanSupported(void)
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{
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_GLFW_REQUIRE_INIT_OR_RETURN(GLFW_FALSE);
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return _glfwInitVulkan(_GLFW_FIND_LOADER);
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}
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GLFWAPI const char** glfwGetRequiredInstanceExtensions(uint32_t* count)
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{
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assert(count != NULL);
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*count = 0;
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_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
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if (!_glfwInitVulkan(_GLFW_REQUIRE_LOADER))
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return NULL;
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if (!_glfw.vk.extensions[0])
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return NULL;
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*count = 2;
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return (const char**) _glfw.vk.extensions;
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}
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GLFWAPI GLFWvkproc glfwGetInstanceProcAddress(VkInstance instance,
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const char* procname)
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{
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GLFWvkproc proc;
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assert(procname != NULL);
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_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
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if (!_glfwInitVulkan(_GLFW_REQUIRE_LOADER))
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return NULL;
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proc = (GLFWvkproc) vkGetInstanceProcAddr(instance, procname);
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#if defined(_GLFW_VULKAN_STATIC)
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if (!proc)
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{
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if (strcmp(procname, "vkGetInstanceProcAddr") == 0)
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return (GLFWvkproc) vkGetInstanceProcAddr;
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}
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#else
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if (!proc)
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proc = (GLFWvkproc) _glfw_dlsym(_glfw.vk.handle, procname);
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#endif
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return proc;
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}
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GLFWAPI int glfwGetPhysicalDevicePresentationSupport(VkInstance instance,
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VkPhysicalDevice device,
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uint32_t queuefamily)
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{
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assert(instance != VK_NULL_HANDLE);
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assert(device != VK_NULL_HANDLE);
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_GLFW_REQUIRE_INIT_OR_RETURN(GLFW_FALSE);
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if (!_glfwInitVulkan(_GLFW_REQUIRE_LOADER))
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return GLFW_FALSE;
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if (!_glfw.vk.extensions[0])
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{
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_glfwInputError(GLFW_API_UNAVAILABLE,
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"Vulkan: Window surface creation extensions not found");
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return GLFW_FALSE;
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}
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return _glfwPlatformGetPhysicalDevicePresentationSupport(instance,
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device,
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queuefamily);
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}
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GLFWAPI VkResult glfwCreateWindowSurface(VkInstance instance,
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GLFWwindow* handle,
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const VkAllocationCallbacks* allocator,
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VkSurfaceKHR* surface)
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{
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_GLFWwindow* window = (_GLFWwindow*) handle;
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assert(instance != VK_NULL_HANDLE);
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assert(window != NULL);
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assert(surface != NULL);
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*surface = VK_NULL_HANDLE;
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_GLFW_REQUIRE_INIT_OR_RETURN(VK_ERROR_INITIALIZATION_FAILED);
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if (!_glfwInitVulkan(_GLFW_REQUIRE_LOADER))
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return VK_ERROR_INITIALIZATION_FAILED;
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if (!_glfw.vk.extensions[0])
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{
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_glfwInputError(GLFW_API_UNAVAILABLE,
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"Vulkan: Window surface creation extensions not found");
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return VK_ERROR_EXTENSION_NOT_PRESENT;
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}
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return _glfwPlatformCreateWindowSurface(instance, window, allocator, surface);
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}
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