Initial commit

1 files changed, 154 insertions, 0 deletions

diff --git a/contrib/SDL-3.2.8/src/video/vivante/SDL_vivantevulkan.c b/contrib/SDL-3.2.8/src/video/vivante/SDL_vivantevulkan.c
new file mode 100644
index 0000000..a021a99
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/video/vivante/SDL_vivantevulkan.c
@@ -0,0 +1,154 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 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"
+
+/*
+ * @author Wladimir J. van der Laan. Based on Jacob Lifshay's
+ * SDL_x11vulkan.c, Mark Callow's SDL_androidvulkan.c, and
+ * the FSL demo framework.
+ */
+
+#if defined(SDL_VIDEO_VULKAN) && defined(SDL_VIDEO_DRIVER_VIVANTE)
+
+#include "../SDL_vulkan_internal.h"
+
+#include "SDL_vivantevideo.h"
+
+#include "SDL_vivantevulkan.h"
+
+bool VIVANTE_Vulkan_LoadLibrary(SDL_VideoDevice *_this, const char *path)
+{
+    VkExtensionProperties *extensions = NULL;
+    Uint32 i, extensionCount = 0;
+    bool hasSurfaceExtension = false;
+    bool hasDisplayExtension = 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_GetHint(SDL_HINT_VULKAN_LIBRARY);
+    }
+    if (!path) {
+        // If no path set, try Vivante fb vulkan driver explicitly
+        path = "libvulkan-fb.so";
+        _this->vulkan_config.loader_handle = SDL_LoadObject(path);
+        if (!_this->vulkan_config.loader_handle) {
+            // If that couldn't be loaded, fall back to default name
+            path = "libvulkan.so";
+            _this->vulkan_config.loader_handle = SDL_LoadObject(path);
+        }
+    } else {
+        _this->vulkan_config.loader_handle = SDL_LoadObject(path);
+    }
+    if (!_this->vulkan_config.loader_handle) {
+        return false;
+    }
+    SDL_strlcpy(_this->vulkan_config.loader_path, path,
+                SDL_arraysize(_this->vulkan_config.loader_path));
+    SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "vivante: Loaded vulkan driver %s", 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 = true;
+        } else if (SDL_strcmp(VK_KHR_DISPLAY_EXTENSION_NAME, extensions[i].extensionName) == 0) {
+            hasDisplayExtension = true;
+        }
+    }
+    SDL_free(extensions);
+    if (!hasSurfaceExtension) {
+        SDL_SetError("Installed Vulkan doesn't implement the " VK_KHR_SURFACE_EXTENSION_NAME " extension");
+        goto fail;
+    } else if (!hasDisplayExtension) {
+        SDL_SetError("Installed Vulkan doesn't implement the " VK_KHR_DISPLAY_EXTENSION_NAME "extension");
+        goto fail;
+    }
+    return true;
+
+fail:
+    SDL_UnloadObject(_this->vulkan_config.loader_handle);
+    _this->vulkan_config.loader_handle = NULL;
+    return false;
+}
+
+void VIVANTE_Vulkan_UnloadLibrary(SDL_VideoDevice *_this)
+{
+    if (_this->vulkan_config.loader_handle) {
+        SDL_UnloadObject(_this->vulkan_config.loader_handle);
+        _this->vulkan_config.loader_handle = NULL;
+    }
+}
+
+char const* const* VIVANTE_Vulkan_GetInstanceExtensions(SDL_VideoDevice *_this,
+                                              Uint32 *count)
+{
+    static const char *const extensionsForVivante[] = {
+        VK_KHR_SURFACE_EXTENSION_NAME, VK_KHR_DISPLAY_EXTENSION_NAME
+    };
+    if (count) {
+        *count = SDL_arraysize(extensionsForVivante);
+    }
+    return extensionsForVivante;
+}
+
+bool VIVANTE_Vulkan_CreateSurface(SDL_VideoDevice *_this,
+                                 SDL_Window *window,
+                                 VkInstance instance,
+                                 const struct VkAllocationCallbacks *allocator,
+                                 VkSurfaceKHR *surface)
+{
+    if (!_this->vulkan_config.loader_handle) {
+        return SDL_SetError("Vulkan is not loaded");
+    }
+    return SDL_Vulkan_Display_CreateSurface(_this->vulkan_config.vkGetInstanceProcAddr, instance, allocator, surface);
+}
+
+void VIVANTE_Vulkan_DestroySurface(SDL_VideoDevice *_this,
+                                   VkInstance instance,
+                                   VkSurfaceKHR surface,
+                                   const struct VkAllocationCallbacks *allocator)
+{
+    if (_this->vulkan_config.loader_handle) {
+        SDL_Vulkan_DestroySurface_Internal(_this->vulkan_config.vkGetInstanceProcAddr, instance, surface, allocator);
+    }
+}
+
+#endif