mirror of https://github.com/encounter/SDL.git
Fixed bug 5354 - DirectFB: Add Vulkan support
Nicolas Caramelli This patch adds Vulkan support for the DirectFB video driver. A screenshot with SDL tests running on DirectFB is available on the HiGFXback project: https://github.com/caramelli/higfxback/wiki/DirectFB#sdl
This commit is contained in:
Sam Lantinga
parent
e44bf8a080
commit
4121ab6200
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@ -38,6 +38,9 @@
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#if SDL_VIDEO_DRIVER_COCOA
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#define VK_USE_PLATFORM_MACOS_MVK
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#endif
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#if SDL_VIDEO_DRIVER_DIRECTFB
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#define VK_USE_PLATFORM_DIRECTFB_EXT
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#endif
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#if SDL_VIDEO_DRIVER_UIKIT
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#define VK_USE_PLATFORM_IOS_MVK
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#endif
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@ -27,6 +27,7 @@
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*/
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#include "SDL_DirectFB_modes.h"
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#include "SDL_DirectFB_opengl.h"
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#include "SDL_DirectFB_vulkan.h"
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#include "SDL_DirectFB_window.h"
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#include "SDL_DirectFB_WM.h"
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@ -136,6 +137,13 @@ DirectFB_CreateDevice(int devindex)
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device->shape_driver.SetWindowShape = DirectFB_SetWindowShape;
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device->shape_driver.ResizeWindowShape = DirectFB_ResizeWindowShape;
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#if SDL_VIDEO_VULKAN
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device->Vulkan_LoadLibrary = DirectFB_Vulkan_LoadLibrary;
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device->Vulkan_UnloadLibrary = DirectFB_Vulkan_UnloadLibrary;
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device->Vulkan_GetInstanceExtensions = DirectFB_Vulkan_GetInstanceExtensions;
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device->Vulkan_CreateSurface = DirectFB_Vulkan_CreateSurface;
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#endif
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device->free = DirectFB_DeleteDevice;
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return device;
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@ -0,0 +1,169 @@
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
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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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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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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 be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#if SDL_VIDEO_VULKAN && SDL_VIDEO_DRIVER_DIRECTFB
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#include "SDL_DirectFB_window.h"
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#include "SDL_loadso.h"
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#include "SDL_DirectFB_vulkan.h"
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int DirectFB_Vulkan_LoadLibrary(_THIS, const char *path)
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{
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VkExtensionProperties *extensions = NULL;
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Uint32 i, extensionCount = 0;
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SDL_bool hasSurfaceExtension = SDL_FALSE;
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SDL_bool hasDirectFBSurfaceExtension = SDL_FALSE;
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PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr = NULL;
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if(_this->vulkan_config.loader_handle)
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return SDL_SetError("Vulkan already loaded");
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/* Load the Vulkan loader library */
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if(!path)
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path = SDL_getenv("SDL_VULKAN_LIBRARY");
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if(!path)
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path = "libvulkan.so.1";
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_this->vulkan_config.loader_handle = SDL_LoadObject(path);
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if(!_this->vulkan_config.loader_handle)
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return -1;
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SDL_strlcpy(_this->vulkan_config.loader_path, path,
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SDL_arraysize(_this->vulkan_config.loader_path));
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vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr)SDL_LoadFunction(
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_this->vulkan_config.loader_handle, "vkGetInstanceProcAddr");
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if(!vkGetInstanceProcAddr)
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goto fail;
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_this->vulkan_config.vkGetInstanceProcAddr = (void *)vkGetInstanceProcAddr;
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_this->vulkan_config.vkEnumerateInstanceExtensionProperties =
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(void *)((PFN_vkGetInstanceProcAddr)_this->vulkan_config.vkGetInstanceProcAddr)(
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VK_NULL_HANDLE, "vkEnumerateInstanceExtensionProperties");
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if(!_this->vulkan_config.vkEnumerateInstanceExtensionProperties)
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goto fail;
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extensions = SDL_Vulkan_CreateInstanceExtensionsList(
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(PFN_vkEnumerateInstanceExtensionProperties)
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_this->vulkan_config.vkEnumerateInstanceExtensionProperties,
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&extensionCount);
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if(!extensions)
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goto fail;
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for(i = 0; i < extensionCount; i++)
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{
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if(SDL_strcmp(VK_KHR_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0)
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hasSurfaceExtension = SDL_TRUE;
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else if(SDL_strcmp(VK_EXT_DIRECTFB_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0)
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hasDirectFBSurfaceExtension = SDL_TRUE;
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}
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SDL_free(extensions);
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if(!hasSurfaceExtension)
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{
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SDL_SetError("Installed Vulkan doesn't implement the "
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VK_KHR_SURFACE_EXTENSION_NAME " extension");
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goto fail;
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}
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else if(!hasDirectFBSurfaceExtension)
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{
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SDL_SetError("Installed Vulkan doesn't implement the "
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VK_EXT_DIRECTFB_SURFACE_EXTENSION_NAME "extension");
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goto fail;
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}
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return 0;
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fail:
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SDL_UnloadObject(_this->vulkan_config.loader_handle);
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_this->vulkan_config.loader_handle = NULL;
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return -1;
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}
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void DirectFB_Vulkan_UnloadLibrary(_THIS)
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{
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if(_this->vulkan_config.loader_handle)
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{
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SDL_UnloadObject(_this->vulkan_config.loader_handle);
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_this->vulkan_config.loader_handle = NULL;
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}
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}
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SDL_bool DirectFB_Vulkan_GetInstanceExtensions(_THIS,
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SDL_Window *window,
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unsigned *count,
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const char **names)
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{
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static const char *const extensionsForDirectFB[] = {
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VK_KHR_SURFACE_EXTENSION_NAME, VK_EXT_DIRECTFB_SURFACE_EXTENSION_NAME
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};
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if(!_this->vulkan_config.loader_handle)
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{
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SDL_SetError("Vulkan is not loaded");
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return SDL_FALSE;
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}
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return SDL_Vulkan_GetInstanceExtensions_Helper(
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count, names, SDL_arraysize(extensionsForDirectFB),
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extensionsForDirectFB);
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}
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SDL_bool DirectFB_Vulkan_CreateSurface(_THIS,
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SDL_Window *window,
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VkInstance instance,
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VkSurfaceKHR *surface)
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{
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SDL_DFB_DEVICEDATA(_this);
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SDL_DFB_WINDOWDATA(window);
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PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr =
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(PFN_vkGetInstanceProcAddr)_this->vulkan_config.vkGetInstanceProcAddr;
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PFN_vkCreateDirectFBSurfaceEXT vkCreateDirectFBSurfaceEXT =
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(PFN_vkCreateDirectFBSurfaceEXT)vkGetInstanceProcAddr(
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instance,
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"vkCreateDirectFBSurfaceEXT");
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VkDirectFBSurfaceCreateInfoEXT createInfo;
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VkResult result;
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if(!_this->vulkan_config.loader_handle)
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{
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SDL_SetError("Vulkan is not loaded");
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return SDL_FALSE;
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}
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if(!vkCreateDirectFBSurfaceEXT)
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{
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SDL_SetError(VK_EXT_DIRECTFB_SURFACE_EXTENSION_NAME
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" extension is not enabled in the Vulkan instance.");
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return SDL_FALSE;
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}
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SDL_zero(createInfo);
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createInfo.sType = VK_STRUCTURE_TYPE_DIRECTFB_SURFACE_CREATE_INFO_EXT;
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createInfo.pNext = NULL;
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createInfo.flags = 0;
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createInfo.dfb = devdata->dfb;
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createInfo.surface = windata->surface;
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result = vkCreateDirectFBSurfaceEXT(instance, &createInfo,
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NULL, surface);
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if(result != VK_SUCCESS)
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{
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SDL_SetError("vkCreateDirectFBSurfaceEXT failed: %s",
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SDL_Vulkan_GetResultString(result));
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return SDL_FALSE;
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}
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return SDL_TRUE;
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}
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#endif
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/* vim: set ts=4 sw=4 expandtab: */
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@ -0,0 +1,47 @@
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
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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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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
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
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2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#ifndef SDL_DirectFB_vulkan_h_
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#define SDL_DirectFB_vulkan_h_
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#include "../SDL_vulkan_internal.h"
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#include "../SDL_sysvideo.h"
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#if SDL_VIDEO_VULKAN && SDL_VIDEO_DRIVER_DIRECTFB
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int DirectFB_Vulkan_LoadLibrary(_THIS, const char *path);
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void DirectFB_Vulkan_UnloadLibrary(_THIS);
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SDL_bool DirectFB_Vulkan_GetInstanceExtensions(_THIS,
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SDL_Window *window,
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unsigned *count,
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const char **names);
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SDL_bool DirectFB_Vulkan_CreateSurface(_THIS,
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SDL_Window *window,
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VkInstance instance,
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VkSurfaceKHR *surface);
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#endif
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#endif /* SDL_DirectFB_vulkan_h_ */
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/* vi: set ts=4 sw=4 expandtab: */
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