From 9f2ef576b994e4609191f03523ea8f397c6063c9 Mon Sep 17 00:00:00 2001
From: James Bulman <contact@bulmanator.com>
Date: Fri, 3 Oct 2025 20:42:04 +0100
Subject: [PATCH] Red screen on Linux

Oddly no validation error
---
 code/core/platform.h    |  2 ++
 code/vulkan/core.c      | 40 +++++++++++++++++++++++++++++++++
 code/vulkan/functions.h |  8 +++++++
 linux                   | 50 +++++++++++++++++++++++++++++++++++++++++
 4 files changed, 100 insertions(+)
 create mode 100755 linux

diff --git a/code/core/platform.h b/code/core/platform.h
index fb8d4ce..995e76d 100644
--- a/code/core/platform.h
+++ b/code/core/platform.h
@@ -68,6 +68,8 @@
 #if OS_WINDOWS
 	#define WIN32_LEAN_AND_MEAN 1
 	#include <windows.h>
+#elif OS_LINUX
+	#include <dlfcn.h>
 #endif
 
 #endif  // LD_CORE_PLATFORM_H_
diff --git a/code/vulkan/core.c b/code/vulkan/core.c
index 742c8b6..e22392f 100644
--- a/code/vulkan/core.c
+++ b/code/vulkan/core.c
@@ -23,6 +23,46 @@ static void Vk_CreateSurface(SDL_Window *window) {
 	vk.err = vk.CreateWin32SurfaceKHR(vk.instance, &create_info, 0, &vk.surface);
 }
 
+#elif OS_LINUX
+
+#define VK_PLATFORM_SURFACE_EXTENSION \
+	VK_KHR_XLIB_SURFACE_EXTENSION_NAME, \
+	VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME
+
+static void *Vk_LoadLibrary() {
+	void *result = dlopen("libvulkan.so", RTLD_LAZY);
+
+	if (result != 0) {
+		vk.GetInstanceProcAddr = (PFN_vkGetInstanceProcAddr) dlsym(result, "vkGetInstanceProcAddr");
+	}
+
+	return result;
+}
+
+static void Vk_CreateSurface(SDL_Window *window) {
+	SDL_PropertiesID prop_id = SDL_GetWindowProperties(window);
+
+	struct wl_display *wl_display = SDL_GetPointerProperty(prop_id, SDL_PROP_WINDOW_WAYLAND_DISPLAY_POINTER, 0);
+	if (wl_display == 0) {
+		// Assume we are running via X11 if there isn't a vaild Wayland display
+		//
+		VkXlibSurfaceCreateInfoKHR create_info = { 0 };
+		create_info.sType = VK_STRUCTURE_TYPE_XLIB_SURFACE_CREATE_INFO_KHR;
+		create_info.dpy    = SDL_GetPointerProperty(prop_id, SDL_PROP_WINDOW_X11_DISPLAY_POINTER, 0);
+		create_info.window = SDL_GetNumberProperty(prop_id, SDL_PROP_WINDOW_X11_WINDOW_NUMBER, 0);
+
+		vk.err = vk.CreateXlibSurfaceKHR(vk.instance, &create_info, 0, &vk.surface);
+	}
+	else {
+		VkWaylandSurfaceCreateInfoKHR create_info = { 0 };
+		create_info.sType = VK_STRUCTURE_TYPE_WAYLAND_SURFACE_CREATE_INFO_KHR;
+		create_info.display = wl_display;
+		create_info.surface = SDL_GetPointerProperty(prop_id, SDL_PROP_WINDOW_WAYLAND_SURFACE_POINTER, 0);
+
+		vk.err = vk.CreateWaylandSurfaceKHR(vk.instance, &create_info, 0, &vk.surface);
+	}
+}
+
 #endif
 
 Vk_Context vk;
diff --git a/code/vulkan/functions.h b/code/vulkan/functions.h
index 1a59d2a..45288df 100644
--- a/code/vulkan/functions.h
+++ b/code/vulkan/functions.h
@@ -10,6 +10,14 @@
 #if defined(VK_USE_PLATFORM_WIN32_KHR)
 	VK_FUNC(CreateWin32SurfaceKHR);
 #endif
+
+#if defined(VK_USE_PLATFORM_WAYLAND_KHR)
+	VK_FUNC(CreateWaylandSurfaceKHR);
+#endif
+#if defined(VK_USE_PLATFORM_XLIB_KHR)
+	VK_FUNC(CreateXlibSurfaceKHR);
+#endif
+
 	#undef VK_INSTANCE_FUNCTIONS
 #endif
 
diff --git a/linux b/linux
new file mode 100755
index 0000000..b44be73
--- /dev/null
+++ b/linux
@@ -0,0 +1,50 @@
+#!/bin/sh
+set -e
+
+pushd "$(dirname $0)" > /dev/null
+
+if [[ ! -d "build" ]];
+then
+	mkdir "build"
+fi
+
+pushd "build" > /dev/null
+
+release=0
+deps=0
+
+for a in $*
+do
+	let $a=1
+done
+
+if [[ ! -d "deps" ]]
+then
+	deps=1
+fi
+
+if [[ $deps == 1 ]]
+then
+	# We don't build SDL3 like on windows, this assumes you have it installed instead. We can't
+	# just ship with the version of SDL3 we want because the shared object system is bad
+	echo "[Building dependencies]"
+
+	rm    -rf "deps"
+	mkdir -p  "deps/stb"
+
+	cp ../thirdparty/stb/*.h deps/stb
+fi
+
+echo "[Building source]"
+
+COMPILER_OPTS="-Wall -Wno-missing-braces -I'deps/stb'"
+LINKER_OPTS="-lSDL3"
+
+if [[ $release == 1 ]]
+then
+	echo "[Release build]"
+	gcc -O2 -Werror $COMPILER_OPTS -DLD_RELEASE=1 $(realpath "../code/first.c") -o "ludum" $LINKER_OPTS
+else
+	echo "[Debug build]"
+	gcc -O0 -g -ggdb $COMPILER_OPTS $(realpath "../code/first.c") -o "ldebug" $LINKER_OPTS
+fi