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
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diff --git a/src/video/SDL_vulkan_internal.h b/src/video/SDL_vulkan_internal.h
index 4e0ecbe..bc49ec4 100644
--- a/src/video/SDL_vulkan_internal.h
+++ b/src/video/SDL_vulkan_internal.h
@@ -38,6 +38,9 @@
#if SDL_VIDEO_DRIVER_COCOA
#define VK_USE_PLATFORM_MACOS_MVK
#endif
+#if SDL_VIDEO_DRIVER_DIRECTFB
+#define VK_USE_PLATFORM_DIRECTFB_EXT
+#endif
#if SDL_VIDEO_DRIVER_UIKIT
#define VK_USE_PLATFORM_IOS_MVK
#endif
diff --git a/src/video/directfb/SDL_DirectFB_video.c b/src/video/directfb/SDL_DirectFB_video.c
index 79fce94..bf52d98 100644
--- a/src/video/directfb/SDL_DirectFB_video.c
+++ b/src/video/directfb/SDL_DirectFB_video.c
@@ -27,6 +27,7 @@
*/
#include "SDL_DirectFB_modes.h"
#include "SDL_DirectFB_opengl.h"
+#include "SDL_DirectFB_vulkan.h"
#include "SDL_DirectFB_window.h"
#include "SDL_DirectFB_WM.h"
@@ -136,6 +137,13 @@ DirectFB_CreateDevice(int devindex)
device->shape_driver.SetWindowShape = DirectFB_SetWindowShape;
device->shape_driver.ResizeWindowShape = DirectFB_ResizeWindowShape;
+#if SDL_VIDEO_VULKAN
+ device->Vulkan_LoadLibrary = DirectFB_Vulkan_LoadLibrary;
+ device->Vulkan_UnloadLibrary = DirectFB_Vulkan_UnloadLibrary;
+ device->Vulkan_GetInstanceExtensions = DirectFB_Vulkan_GetInstanceExtensions;
+ device->Vulkan_CreateSurface = DirectFB_Vulkan_CreateSurface;
+#endif
+
device->free = DirectFB_DeleteDevice;
return device;
diff --git a/src/video/directfb/SDL_DirectFB_vulkan.c b/src/video/directfb/SDL_DirectFB_vulkan.c
new file mode 100644
index 0000000..3a2acae
--- /dev/null
+++ b/src/video/directfb/SDL_DirectFB_vulkan.c
@@ -0,0 +1,169 @@
+/*
+ Simple DirectMedia Layer
+ Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
+
+ This software is provided 'as-is', without any express or implied
+ warranty. In no event will the authors be held liable for any damages
+ arising from the use of this software.
+
+ Permission is granted to anyone to use this software for any purpose,
+ including commercial applications, and to alter it and redistribute it
+ freely, subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must not
+ 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.
+ 2. Altered source versions must be plainly marked as such, and must not be
+ misrepresented as being the original software.
+ 3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "../../SDL_internal.h"
+
+#if SDL_VIDEO_VULKAN && SDL_VIDEO_DRIVER_DIRECTFB
+
+#include "SDL_DirectFB_window.h"
+
+#include "SDL_loadso.h"
+#include "SDL_DirectFB_vulkan.h"
+
+int DirectFB_Vulkan_LoadLibrary(_THIS, const char *path)
+{
+ VkExtensionProperties *extensions = NULL;
+ Uint32 i, extensionCount = 0;
+ SDL_bool hasSurfaceExtension = SDL_FALSE;
+ SDL_bool hasDirectFBSurfaceExtension = SDL_FALSE;
+ PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr = NULL;
+ if(_this->vulkan_config.loader_handle)
+ return SDL_SetError("Vulkan already loaded");
+
+ /* Load the Vulkan loader library */
+ if(!path)
+ path = SDL_getenv("SDL_VULKAN_LIBRARY");
+ if(!path)
+ path = "libvulkan.so.1";
+ _this->vulkan_config.loader_handle = SDL_LoadObject(path);
+ if(!_this->vulkan_config.loader_handle)
+ return -1;
+ SDL_strlcpy(_this->vulkan_config.loader_path, path,
+ SDL_arraysize(_this->vulkan_config.loader_path));
+ vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr)SDL_LoadFunction(
+ _this->vulkan_config.loader_handle, "vkGetInstanceProcAddr");
+ if(!vkGetInstanceProcAddr)
+ goto fail;
+ _this->vulkan_config.vkGetInstanceProcAddr = (void *)vkGetInstanceProcAddr;
+ _this->vulkan_config.vkEnumerateInstanceExtensionProperties =
+ (void *)((PFN_vkGetInstanceProcAddr)_this->vulkan_config.vkGetInstanceProcAddr)(
+ VK_NULL_HANDLE, "vkEnumerateInstanceExtensionProperties");
+ if(!_this->vulkan_config.vkEnumerateInstanceExtensionProperties)
+ goto fail;
+ extensions = SDL_Vulkan_CreateInstanceExtensionsList(
+ (PFN_vkEnumerateInstanceExtensionProperties)
+ _this->vulkan_config.vkEnumerateInstanceExtensionProperties,
+ &extensionCount);
+ if(!extensions)
+ goto fail;
+ for(i = 0; i < extensionCount; i++)
+ {
+ if(SDL_strcmp(VK_KHR_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0)
+ hasSurfaceExtension = SDL_TRUE;
+ else if(SDL_strcmp(VK_EXT_DIRECTFB_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0)
+ hasDirectFBSurfaceExtension = SDL_TRUE;
+ }
+ SDL_free(extensions);
+ if(!hasSurfaceExtension)
+ {
+ SDL_SetError("Installed Vulkan doesn't implement the "
+ VK_KHR_SURFACE_EXTENSION_NAME " extension");
+ goto fail;
+ }
+ else if(!hasDirectFBSurfaceExtension)
+ {
+ SDL_SetError("Installed Vulkan doesn't implement the "
+ VK_EXT_DIRECTFB_SURFACE_EXTENSION_NAME "extension");
+ goto fail;
+ }
+ return 0;
+
+fail:
+ SDL_UnloadObject(_this->vulkan_config.loader_handle);
+ _this->vulkan_config.loader_handle = NULL;
+ return -1;
+}
+
+void DirectFB_Vulkan_UnloadLibrary(_THIS)
+{
+ if(_this->vulkan_config.loader_handle)
+ {
+ SDL_UnloadObject(_this->vulkan_config.loader_handle);
+ _this->vulkan_config.loader_handle = NULL;
+ }
+}
+
+SDL_bool DirectFB_Vulkan_GetInstanceExtensions(_THIS,
+ SDL_Window *window,
+ unsigned *count,
+ const char **names)
+{
+ static const char *const extensionsForDirectFB[] = {
+ VK_KHR_SURFACE_EXTENSION_NAME, VK_EXT_DIRECTFB_SURFACE_EXTENSION_NAME
+ };
+ if(!_this->vulkan_config.loader_handle)
+ {
+ SDL_SetError("Vulkan is not loaded");
+ return SDL_FALSE;
+ }
+ return SDL_Vulkan_GetInstanceExtensions_Helper(
+ count, names, SDL_arraysize(extensionsForDirectFB),
+ extensionsForDirectFB);
+}
+
+SDL_bool DirectFB_Vulkan_CreateSurface(_THIS,
+ SDL_Window *window,
+ VkInstance instance,
+ VkSurfaceKHR *surface)
+{
+ SDL_DFB_DEVICEDATA(_this);
+ SDL_DFB_WINDOWDATA(window);
+ PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr =
+ (PFN_vkGetInstanceProcAddr)_this->vulkan_config.vkGetInstanceProcAddr;
+ PFN_vkCreateDirectFBSurfaceEXT vkCreateDirectFBSurfaceEXT =
+ (PFN_vkCreateDirectFBSurfaceEXT)vkGetInstanceProcAddr(
+ instance,
+ "vkCreateDirectFBSurfaceEXT");
+ VkDirectFBSurfaceCreateInfoEXT createInfo;
+ VkResult result;
+
+ if(!_this->vulkan_config.loader_handle)
+ {
+ SDL_SetError("Vulkan is not loaded");
+ return SDL_FALSE;
+ }
+
+ if(!vkCreateDirectFBSurfaceEXT)
+ {
+ SDL_SetError(VK_EXT_DIRECTFB_SURFACE_EXTENSION_NAME
+ " extension is not enabled in the Vulkan instance.");
+ return SDL_FALSE;
+ }
+ SDL_zero(createInfo);
+ createInfo.sType = VK_STRUCTURE_TYPE_DIRECTFB_SURFACE_CREATE_INFO_EXT;
+ createInfo.pNext = NULL;
+ createInfo.flags = 0;
+ createInfo.dfb = devdata->dfb;
+ createInfo.surface = windata->surface;
+ result = vkCreateDirectFBSurfaceEXT(instance, &createInfo,
+ NULL, surface);
+ if(result != VK_SUCCESS)
+ {
+ SDL_SetError("vkCreateDirectFBSurfaceEXT failed: %s",
+ SDL_Vulkan_GetResultString(result));
+ return SDL_FALSE;
+ }
+ return SDL_TRUE;
+}
+
+#endif
+
+/* vim: set ts=4 sw=4 expandtab: */
diff --git a/src/video/directfb/SDL_DirectFB_vulkan.h b/src/video/directfb/SDL_DirectFB_vulkan.h
new file mode 100644
index 0000000..2e16980
--- /dev/null
+++ b/src/video/directfb/SDL_DirectFB_vulkan.h
@@ -0,0 +1,47 @@
+/*
+ Simple DirectMedia Layer
+ Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
+
+ This software is provided 'as-is', without any express or implied
+ warranty. In no event will the authors be held liable for any damages
+ arising from the use of this software.
+
+ Permission is granted to anyone to use this software for any purpose,
+ including commercial applications, and to alter it and redistribute it
+ freely, subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must not
+ 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.
+ 2. Altered source versions must be plainly marked as such, and must not be
+ misrepresented as being the original software.
+ 3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "../../SDL_internal.h"
+
+#ifndef SDL_DirectFB_vulkan_h_
+#define SDL_DirectFB_vulkan_h_
+
+#include "../SDL_vulkan_internal.h"
+#include "../SDL_sysvideo.h"
+
+#if SDL_VIDEO_VULKAN && SDL_VIDEO_DRIVER_DIRECTFB
+
+int DirectFB_Vulkan_LoadLibrary(_THIS, const char *path);
+void DirectFB_Vulkan_UnloadLibrary(_THIS);
+SDL_bool DirectFB_Vulkan_GetInstanceExtensions(_THIS,
+ SDL_Window *window,
+ unsigned *count,
+ const char **names);
+SDL_bool DirectFB_Vulkan_CreateSurface(_THIS,
+ SDL_Window *window,
+ VkInstance instance,
+ VkSurfaceKHR *surface);
+
+#endif
+
+#endif /* SDL_DirectFB_vulkan_h_ */
+
+/* vi: set ts=4 sw=4 expandtab: */