Ammerhai/Mikemon
2
0
Fork 0
Code Issues 8 Pull Requests Packages Projects 2 Releases 1 Wiki Activity

change build system to CMake and use SDL3 for everything

Browse Source
This commit is contained in:
Sven Balzer
2025-02-24 19:47:40 +01:00
parent e6a5a00dcb
commit 74e0d78a4c
2052 changed files with 981424 additions and 1461 deletions
Download Patch File Download Diff File Expand all files Collapse all files
libs/SDL3/src/video/offscreen/SDL_offscreenevents.c
+38
View File
@@ -0,0 +1,38 @@
/*
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"
#ifdef SDL_VIDEO_DRIVER_OFFSCREEN
/* Being a offscreen driver, there's no event stream. We just define stubs for
most of the API. */
#include "../../events/SDL_events_c.h"
#include "SDL_offscreenvideo.h"
#include "SDL_offscreenevents_c.h"
void OFFSCREEN_PumpEvents(SDL_VideoDevice *_this)
{
// do nothing.
}
#endif // SDL_VIDEO_DRIVER_OFFSCREEN
libs/SDL3/src/video/offscreen/SDL_offscreenevents_c.h
+23
View File
@@ -0,0 +1,23 @@
/*
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"
extern void OFFSCREEN_PumpEvents(SDL_VideoDevice *_this);
libs/SDL3/src/video/offscreen/SDL_offscreenframebuffer.c
+79
View File
@@ -0,0 +1,79 @@
/*
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"
#ifdef SDL_VIDEO_DRIVER_OFFSCREEN
#include "../SDL_sysvideo.h"
#include "../../SDL_properties_c.h"
#include "SDL_offscreenframebuffer_c.h"
#define OFFSCREEN_SURFACE "SDL.internal.window.surface"
bool SDL_OFFSCREEN_CreateWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window, SDL_PixelFormat *format, void **pixels, int *pitch)
{
SDL_Surface *surface;
const SDL_PixelFormat surface_format = SDL_PIXELFORMAT_XRGB8888;
int w, h;
// Create a new framebuffer
SDL_GetWindowSizeInPixels(window, &w, &h);
surface = SDL_CreateSurface(w, h, surface_format);
if (!surface) {
return false;
}
// Save the info and return!
SDL_SetSurfaceProperty(SDL_GetWindowProperties(window), OFFSCREEN_SURFACE, surface);
*format = surface_format;
*pixels = surface->pixels;
*pitch = surface->pitch;
return true;
}
bool SDL_OFFSCREEN_UpdateWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window, const SDL_Rect *rects, int numrects)
{
static int frame_number;
SDL_Surface *surface;
surface = (SDL_Surface *)SDL_GetPointerProperty(SDL_GetWindowProperties(window), OFFSCREEN_SURFACE, NULL);
if (!surface) {
return SDL_SetError("Couldn't find offscreen surface for window");
}
// Send the data to the display
if (SDL_GetHintBoolean(SDL_HINT_VIDEO_OFFSCREEN_SAVE_FRAMES, false)) {
char file[128];
(void)SDL_snprintf(file, sizeof(file), "SDL_window%" SDL_PRIu32 "-%8.8d.bmp",
SDL_GetWindowID(window), ++frame_number);
SDL_SaveBMP(surface, file);
}
return true;
}
void SDL_OFFSCREEN_DestroyWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window)
{
SDL_ClearProperty(SDL_GetWindowProperties(window), OFFSCREEN_SURFACE);
}
#endif // SDL_VIDEO_DRIVER_OFFSCREEN
libs/SDL3/src/video/offscreen/SDL_offscreenframebuffer_c.h
+25
View File
@@ -0,0 +1,25 @@
/*
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"
extern bool SDL_OFFSCREEN_CreateWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window, SDL_PixelFormat *format, void **pixels, int *pitch);
extern bool SDL_OFFSCREEN_UpdateWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window, const SDL_Rect *rects, int numrects);
extern void SDL_OFFSCREEN_DestroyWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window);
libs/SDL3/src/video/offscreen/SDL_offscreenopengles.c
+82
View File
@@ -0,0 +1,82 @@
/*
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"
#if defined(SDL_VIDEO_DRIVER_OFFSCREEN) && defined(SDL_VIDEO_OPENGL_EGL)
#include "SDL_offscreenopengles.h"
#include "SDL_offscreenvideo.h"
#include "SDL_offscreenwindow.h"
// EGL implementation of SDL OpenGL support
bool OFFSCREEN_GLES_LoadLibrary(SDL_VideoDevice *_this, const char *path)
{
if (!SDL_EGL_LoadLibraryOnly(_this, path)) {
return false;
}
/* driver_loaded gets incremented by SDL_GL_LoadLibrary when we return,
but SDL_EGL_InitializeOffscreen checks that we're loaded before then,
so temporarily bump it since we know that LoadLibraryOnly succeeded. */
bool result;
_this->gl_config.driver_loaded++;
result = SDL_EGL_InitializeOffscreen(_this, 0);
_this->gl_config.driver_loaded--;
if (!result) {
return false;
}
if (!SDL_EGL_ChooseConfig(_this)) {
return false;
}
return true;
}
SDL_GLContext OFFSCREEN_GLES_CreateContext(SDL_VideoDevice *_this, SDL_Window *window)
{
SDL_WindowData *offscreen_window = window->internal;
SDL_GLContext context;
context = SDL_EGL_CreateContext(_this, offscreen_window->egl_surface);
return context;
}
bool OFFSCREEN_GLES_MakeCurrent(SDL_VideoDevice *_this, SDL_Window *window, SDL_GLContext context)
{
if (window) {
EGLSurface egl_surface = window->internal->egl_surface;
return SDL_EGL_MakeCurrent(_this, egl_surface, context);
} else {
return SDL_EGL_MakeCurrent(_this, NULL, NULL);
}
}
bool OFFSCREEN_GLES_SwapWindow(SDL_VideoDevice *_this, SDL_Window *window)
{
SDL_WindowData *offscreen_wind = window->internal;
return SDL_EGL_SwapBuffers(_this, offscreen_wind->egl_surface);
}
#endif // SDL_VIDEO_DRIVER_OFFSCREEN && SDL_VIDEO_OPENGL_EGL
libs/SDL3/src/video/offscreen/SDL_offscreenopengles.h
+44
View File
@@ -0,0 +1,44 @@
/*
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"
#ifndef SDL_offscreenopengles_h
#define SDL_offscreenopengles_h
#if defined(SDL_VIDEO_DRIVER_OFFSCREEN) && defined(SDL_VIDEO_OPENGL_EGL)
#include "../SDL_sysvideo.h"
#include "../SDL_egl_c.h"
#define OFFSCREEN_GLES_GetProcAddress SDL_EGL_GetProcAddressInternal
#define OFFSCREEN_GLES_UnloadLibrary SDL_EGL_UnloadLibrary
#define OFFSCREEN_GLES_GetSwapInterval SDL_EGL_GetSwapInterval
#define OFFSCREEN_GLES_SetSwapInterval SDL_EGL_SetSwapInterval
#define OFFSCREEN_GLES_DestroyContext SDL_EGL_DestroyContext
extern bool OFFSCREEN_GLES_LoadLibrary(SDL_VideoDevice *_this, const char *path);
extern SDL_GLContext OFFSCREEN_GLES_CreateContext(SDL_VideoDevice *_this, SDL_Window *window);
extern bool OFFSCREEN_GLES_MakeCurrent(SDL_VideoDevice *_this, SDL_Window *window, SDL_GLContext context);
extern bool OFFSCREEN_GLES_SwapWindow(SDL_VideoDevice *_this, SDL_Window *window);
#endif // SDL_VIDEO_DRIVER_OFFSCREEN && SDL_VIDEO_OPENGL_EGL
#endif // SDL_offscreenopengles_h
libs/SDL3/src/video/offscreen/SDL_offscreenvideo.c
+150
View File
@@ -0,0 +1,150 @@
/*
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"
#ifdef SDL_VIDEO_DRIVER_OFFSCREEN
/* Offscreen video driver is similar to dummy driver, however its purpose
* is enabling applications to use some of the SDL video functionality
* (notably context creation) while not requiring a display output.
*
* An example would be running a graphical program on a headless box
* for automated testing.
*/
#include "SDL_offscreenvideo.h"
#include "SDL_offscreenevents_c.h"
#include "SDL_offscreenframebuffer_c.h"
#include "SDL_offscreenopengles.h"
#include "SDL_offscreenvulkan.h"
#include "SDL_offscreenwindow.h"
#define OFFSCREENVID_DRIVER_NAME "offscreen"
// Initialization/Query functions
static bool OFFSCREEN_VideoInit(SDL_VideoDevice *_this);
static bool OFFSCREEN_SetDisplayMode(SDL_VideoDevice *_this, SDL_VideoDisplay *display, SDL_DisplayMode *mode);
static void OFFSCREEN_VideoQuit(SDL_VideoDevice *_this);
// OFFSCREEN driver bootstrap functions
static void OFFSCREEN_DeleteDevice(SDL_VideoDevice *device)
{
SDL_free(device);
}
static bool OFFSCREEN_Available(const char *enable_hint)
{
const char *hint = SDL_GetHint(SDL_HINT_VIDEO_DRIVER);
if (hint) {
if (SDL_strcmp(hint, enable_hint) == 0) {
return true;
}
}
return false;
}
static SDL_VideoDevice *OFFSCREEN_CreateDevice(void)
{
SDL_VideoDevice *device;
if (!OFFSCREEN_Available(OFFSCREENVID_DRIVER_NAME)) {
return NULL;
}
// Initialize all variables that we clean on shutdown
device = (SDL_VideoDevice *)SDL_calloc(1, sizeof(SDL_VideoDevice));
if (!device) {
return NULL;
}
// General video
device->VideoInit = OFFSCREEN_VideoInit;
device->VideoQuit = OFFSCREEN_VideoQuit;
device->SetDisplayMode = OFFSCREEN_SetDisplayMode;
device->PumpEvents = OFFSCREEN_PumpEvents;
device->CreateWindowFramebuffer = SDL_OFFSCREEN_CreateWindowFramebuffer;
device->UpdateWindowFramebuffer = SDL_OFFSCREEN_UpdateWindowFramebuffer;
device->DestroyWindowFramebuffer = SDL_OFFSCREEN_DestroyWindowFramebuffer;
device->free = OFFSCREEN_DeleteDevice;
#ifdef SDL_VIDEO_OPENGL_EGL
// GL context
device->GL_SwapWindow = OFFSCREEN_GLES_SwapWindow;
device->GL_MakeCurrent = OFFSCREEN_GLES_MakeCurrent;
device->GL_CreateContext = OFFSCREEN_GLES_CreateContext;
device->GL_DestroyContext = OFFSCREEN_GLES_DestroyContext;
device->GL_LoadLibrary = OFFSCREEN_GLES_LoadLibrary;
device->GL_UnloadLibrary = OFFSCREEN_GLES_UnloadLibrary;
device->GL_GetProcAddress = OFFSCREEN_GLES_GetProcAddress;
device->GL_GetSwapInterval = OFFSCREEN_GLES_GetSwapInterval;
device->GL_SetSwapInterval = OFFSCREEN_GLES_SetSwapInterval;
#endif
#ifdef SDL_VIDEO_VULKAN
device->Vulkan_LoadLibrary = OFFSCREEN_Vulkan_LoadLibrary;
device->Vulkan_UnloadLibrary = OFFSCREEN_Vulkan_UnloadLibrary;
device->Vulkan_GetInstanceExtensions = OFFSCREEN_Vulkan_GetInstanceExtensions;
device->Vulkan_CreateSurface = OFFSCREEN_Vulkan_CreateSurface;
device->Vulkan_DestroySurface = OFFSCREEN_Vulkan_DestroySurface;
#endif
// "Window"
device->CreateSDLWindow = OFFSCREEN_CreateWindow;
device->DestroyWindow = OFFSCREEN_DestroyWindow;
device->SetWindowSize = OFFSCREEN_SetWindowSize;
return device;
}
VideoBootStrap OFFSCREEN_bootstrap = {
OFFSCREENVID_DRIVER_NAME, "SDL offscreen video driver",
OFFSCREEN_CreateDevice,
NULL // no ShowMessageBox implementation
};
static bool OFFSCREEN_VideoInit(SDL_VideoDevice *_this)
{
SDL_DisplayMode mode;
// Use a fake 32-bpp desktop mode
SDL_zero(mode);
mode.format = SDL_PIXELFORMAT_XRGB8888;
mode.w = 1024;
mode.h = 768;
if (SDL_AddBasicVideoDisplay(&mode) == 0) {
return false;
}
// We're done!
return true;
}
static bool OFFSCREEN_SetDisplayMode(SDL_VideoDevice *_this, SDL_VideoDisplay *display, SDL_DisplayMode *mode)
{
return true;
}
void OFFSCREEN_VideoQuit(SDL_VideoDevice *_this)
{
}
#endif // SDL_VIDEO_DRIVER_OFFSCREEN
libs/SDL3/src/video/offscreen/SDL_offscreenvideo.h
+28
View File
@@ -0,0 +1,28 @@
/*
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"
#ifndef SDL_offscreenvideo_h
#define SDL_offscreenvideo_h
#include "../SDL_sysvideo.h"
#endif // SDL_offscreenvideo_h
libs/SDL3/src/video/offscreen/SDL_offscreenvulkan.c
+261
View File
@@ -0,0 +1,261 @@
/*
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"
#if defined(SDL_VIDEO_VULKAN) && defined(SDL_VIDEO_DRIVER_OFFSCREEN)
#include "../SDL_vulkan_internal.h"
#include "../SDL_sysvideo.h"
static const char *s_defaultPaths[] = {
#if defined(SDL_PLATFORM_WINDOWS)
"vulkan-1.dll"
#elif defined(SDL_PLATFORM_APPLE)
"vulkan.framework/vulkan",
"libvulkan.1.dylib",
"libvulkan.dylib",
"MoltenVK.framework/MoltenVK",
"libMoltenVK.dylib"
#elif defined(SDL_PLATFORM_OPENBSD)
"libvulkan.so"
#else
"libvulkan.so.1"
#endif
};
#if defined( SDL_PLATFORM_APPLE )
#include <dlfcn.h>
// Since libSDL is most likely a .dylib, need RTLD_DEFAULT not RTLD_SELF.
#define DEFAULT_HANDLE RTLD_DEFAULT
#endif
/*Should the whole driver fail if it can't create a surface? Rendering to an offscreen buffer is still possible without a surface.
At the time of writing. I need the driver to minimally work even if the surface extension isn't present.
And account for the inability to create a surface on the consumer side.
So for now I'm targeting my specific use case -Dave Kircher*/
#define HEADLESS_SURFACE_EXTENSION_REQUIRED_TO_LOAD 0
bool OFFSCREEN_Vulkan_LoadLibrary(SDL_VideoDevice *_this, const char *path)
{
VkExtensionProperties *extensions = NULL;
Uint32 extensionCount = 0;
bool hasSurfaceExtension = false;
bool hasHeadlessSurfaceExtension = false;
PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr = NULL;
Uint32 i;
const char **paths;
const char *foundPath = NULL;
Uint32 numPaths;
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 defined(SDL_PLATFORM_APPLE)
if (!path) {
// Handle the case where Vulkan Portability is linked statically.
vkGetInstanceProcAddr =
(PFN_vkGetInstanceProcAddr)dlsym(DEFAULT_HANDLE,
"vkGetInstanceProcAddr");
}
if (vkGetInstanceProcAddr) {
_this->vulkan_config.loader_handle = DEFAULT_HANDLE;
} else
#endif
{
if (path) {
paths = &path;
numPaths = 1;
} else {
paths = s_defaultPaths;
numPaths = SDL_arraysize(s_defaultPaths);
}
for (i = 0; i < numPaths && _this->vulkan_config.loader_handle == NULL; i++) {
foundPath = paths[i];
_this->vulkan_config.loader_handle = SDL_LoadObject(foundPath);
}
if (_this->vulkan_config.loader_handle == NULL) {
return SDL_SetError("Failed to load Vulkan Portability library");
}
SDL_strlcpy(_this->vulkan_config.loader_path, foundPath,
SDL_arraysize(_this->vulkan_config.loader_path));
vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr)SDL_LoadFunction(
_this->vulkan_config.loader_handle, "vkGetInstanceProcAddr");
if (!vkGetInstanceProcAddr) {
SDL_SetError("Failed to load vkGetInstanceProcAddr from Vulkan Portability library");
goto fail;
}
}
_this->vulkan_config.vkGetInstanceProcAddr = (SDL_FunctionPointer)vkGetInstanceProcAddr;
_this->vulkan_config.vkEnumerateInstanceExtensionProperties =
(SDL_FunctionPointer)((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_EXT_HEADLESS_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0) {
hasHeadlessSurfaceExtension = true;
}
}
SDL_free(extensions);
if (!hasSurfaceExtension) {
SDL_SetError("Installed Vulkan doesn't implement the " VK_KHR_SURFACE_EXTENSION_NAME " extension");
goto fail;
}
if (!hasHeadlessSurfaceExtension) {
#if (HEADLESS_SURFACE_EXTENSION_REQUIRED_TO_LOAD != 0)
SDL_SetError("Installed Vulkan doesn't implement the " VK_EXT_HEADLESS_SURFACE_EXTENSION_NAME " extension");
goto fail;
#else
// Let's at least leave a breadcrumb for people to find if they have issues
SDL_Log("Installed Vulkan doesn't implement the " VK_EXT_HEADLESS_SURFACE_EXTENSION_NAME " extension");
#endif
}
return true;
fail:
SDL_UnloadObject(_this->vulkan_config.loader_handle);
_this->vulkan_config.loader_handle = NULL;
return false;
}
void OFFSCREEN_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 *OFFSCREEN_Vulkan_GetInstanceExtensions(SDL_VideoDevice *_this,
Uint32 *count)
{
#if (HEADLESS_SURFACE_EXTENSION_REQUIRED_TO_LOAD == 0)
VkExtensionProperties *enumerateExtensions = NULL;
Uint32 enumerateExtensionCount = 0;
bool hasHeadlessSurfaceExtension = false;
Uint32 i;
#endif
static const char *const returnExtensions[] = { VK_KHR_SURFACE_EXTENSION_NAME, VK_EXT_HEADLESS_SURFACE_EXTENSION_NAME };
if (count) {
# if (HEADLESS_SURFACE_EXTENSION_REQUIRED_TO_LOAD == 0)
{
/* In optional mode, only return VK_EXT_HEADLESS_SURFACE_EXTENSION_NAME if it's already supported by the instance
There's probably a better way to cache the presence of the extension during OFFSCREEN_Vulkan_LoadLibrary().
But both SDL_VideoData and SDL_VideoDevice::vulkan_config seem like I'd need to touch a bunch of code to do properly.
And I want a smaller footprint for the first pass*/
if ( _this->vulkan_config.vkEnumerateInstanceExtensionProperties ) {
enumerateExtensions = SDL_Vulkan_CreateInstanceExtensionsList(
(PFN_vkEnumerateInstanceExtensionProperties)
_this->vulkan_config.vkEnumerateInstanceExtensionProperties,
&enumerateExtensionCount);
for (i = 0; i < enumerateExtensionCount; i++) {
if (SDL_strcmp(VK_EXT_HEADLESS_SURFACE_EXTENSION_NAME, enumerateExtensions[i].extensionName) == 0) {
hasHeadlessSurfaceExtension = true;
}
}
SDL_free(enumerateExtensions);
}
if ( hasHeadlessSurfaceExtension == true ) {
*count = SDL_arraysize(returnExtensions);
} else {
*count = SDL_arraysize(returnExtensions) - 1; // assumes VK_EXT_HEADLESS_SURFACE_EXTENSION_NAME is last
}
}
# else
{
*count = SDL_arraysize(returnExtensions);
}
# endif
}
return returnExtensions;
}
bool OFFSCREEN_Vulkan_CreateSurface(SDL_VideoDevice *_this,
SDL_Window *window,
VkInstance instance,
const struct VkAllocationCallbacks *allocator,
VkSurfaceKHR *surface)
{
*surface = VK_NULL_HANDLE;
if (!_this->vulkan_config.loader_handle) {
return SDL_SetError("Vulkan is not loaded");
}
PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr)_this->vulkan_config.vkGetInstanceProcAddr;
PFN_vkCreateHeadlessSurfaceEXT vkCreateHeadlessSurfaceEXT =
(PFN_vkCreateHeadlessSurfaceEXT)vkGetInstanceProcAddr(instance, "vkCreateHeadlessSurfaceEXT");
VkHeadlessSurfaceCreateInfoEXT createInfo;
VkResult result;
if (!vkCreateHeadlessSurfaceEXT) {
/* This may be surprising to the consumer when HEADLESS_SURFACE_EXTENSION_REQUIRED_TO_LOAD == 0
But this is the tradeoff for allowing offscreen rendering to a buffer to continue working without requiring the extension during driver load */
return SDL_SetError(VK_EXT_HEADLESS_SURFACE_EXTENSION_NAME
" extension is not enabled in the Vulkan instance.");
}
SDL_zero(createInfo);
createInfo.sType = VK_STRUCTURE_TYPE_HEADLESS_SURFACE_CREATE_INFO_EXT;
createInfo.pNext = NULL;
createInfo.flags = 0;
result = vkCreateHeadlessSurfaceEXT(instance, &createInfo, allocator, surface);
if (result != VK_SUCCESS) {
return SDL_SetError("vkCreateHeadlessSurfaceEXT failed: %s", SDL_Vulkan_GetResultString(result));
}
return true;
}
void OFFSCREEN_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
libs/SDL3/src/video/offscreen/SDL_offscreenvulkan.h
+38
View File
@@ -0,0 +1,38 @@
/*
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"
#ifndef SDL_offscreenvulkan_h
#define SDL_offscreenvulkan_h
#if defined(SDL_VIDEO_DRIVER_OFFSCREEN) && defined(SDL_VIDEO_VULKAN)
#include "../SDL_sysvideo.h"
extern bool OFFSCREEN_Vulkan_LoadLibrary(SDL_VideoDevice *_this, const char *path);
extern void OFFSCREEN_Vulkan_UnloadLibrary(SDL_VideoDevice *_this);
extern char const *const *OFFSCREEN_Vulkan_GetInstanceExtensions(SDL_VideoDevice *_this, Uint32 *count);
extern bool OFFSCREEN_Vulkan_CreateSurface(SDL_VideoDevice *_this, SDL_Window *window, VkInstance instance, const struct VkAllocationCallbacks *allocator, VkSurfaceKHR *surface);
extern void OFFSCREEN_Vulkan_DestroySurface(SDL_VideoDevice *_this, VkInstance instance, VkSurfaceKHR surface, const struct VkAllocationCallbacks *allocator);
#endif // SDL_VIDEO_DRIVER_OFFSCREEN && SDL_VIDEO_VULKAN
#endif // SDL_offscreenvulkan_h
libs/SDL3/src/video/offscreen/SDL_offscreenwindow.c
+90
View File
@@ -0,0 +1,90 @@
/*
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"
#ifdef SDL_VIDEO_DRIVER_OFFSCREEN
#include "../SDL_sysvideo.h"
#include "../../events/SDL_windowevents_c.h"
#include "../SDL_egl_c.h"
#include "SDL_offscreenwindow.h"
bool OFFSCREEN_CreateWindow(SDL_VideoDevice *_this, SDL_Window *window, SDL_PropertiesID create_props)
{
SDL_WindowData *offscreen_window = (SDL_WindowData *)SDL_calloc(1, sizeof(SDL_WindowData));
if (!offscreen_window) {
return false;
}
window->internal = offscreen_window;
if (window->x == SDL_WINDOWPOS_UNDEFINED) {
window->x = 0;
}
if (window->y == SDL_WINDOWPOS_UNDEFINED) {
window->y = 0;
}
offscreen_window->sdl_window = window;
#ifdef SDL_VIDEO_OPENGL_EGL
if (window->flags & SDL_WINDOW_OPENGL) {
if (!_this->egl_data) {
return SDL_SetError("Cannot create an OPENGL window invalid egl_data");
}
offscreen_window->egl_surface = SDL_EGL_CreateOffscreenSurface(_this, window->w, window->h);
if (offscreen_window->egl_surface == EGL_NO_SURFACE) {
return SDL_SetError("Failed to created an offscreen surface (EGL display: %p)",
_this->egl_data->egl_display);
}
} else {
offscreen_window->egl_surface = EGL_NO_SURFACE;
}
#endif // SDL_VIDEO_OPENGL_EGL
return true;
}
void OFFSCREEN_DestroyWindow(SDL_VideoDevice *_this, SDL_Window *window)
{
SDL_WindowData *offscreen_window = window->internal;
if (offscreen_window) {
#ifdef SDL_VIDEO_OPENGL_EGL
SDL_EGL_DestroySurface(_this, offscreen_window->egl_surface);
#endif
SDL_free(offscreen_window);
}
window->internal = NULL;
}
void OFFSCREEN_SetWindowSize(SDL_VideoDevice *_this, SDL_Window *window)
{
SDL_SendWindowEvent(window, SDL_EVENT_WINDOW_RESIZED, window->pending.w, window->pending.h);
}
#endif // SDL_VIDEO_DRIVER_OFFSCREEN
libs/SDL3/src/video/offscreen/SDL_offscreenwindow.h
+40
View File
@@ -0,0 +1,40 @@
/*
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"
#ifndef SDL_offscreenwindow_h
#define SDL_offscreenwindow_h
#include "SDL_offscreenvideo.h"
struct SDL_WindowData
{
SDL_Window *sdl_window;
#ifdef SDL_VIDEO_OPENGL_EGL
EGLSurface egl_surface;
#endif
};
extern bool OFFSCREEN_CreateWindow(SDL_VideoDevice *_this, SDL_Window *window, SDL_PropertiesID create_props);
extern void OFFSCREEN_DestroyWindow(SDL_VideoDevice *_this, SDL_Window *window);
extern void OFFSCREEN_SetWindowSize(SDL_VideoDevice *_this, SDL_Window *window);
#endif // SDL_offscreenwindow_h