From 22a303ef129452842823872ffdaeda687c5b6de6 Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Sat, 4 May 2024 19:42:14 +0300
Subject: [PATCH] Add VulkanContext implementation for Windows

---
 Build                                         |  4 ++
 source/graphics/vkwin32/vulkancontext.cpp     | 37 +++++++++++++++++++
 .../graphics/vkwin32/vulkancontext_platform.h | 20 ++++++++++
 3 files changed, 61 insertions(+)
 create mode 100644 source/graphics/vkwin32/vulkancontext.cpp
 create mode 100644 source/graphics/vkwin32/vulkancontext_platform.h

diff --git a/Build b/Build
index 848b240..05bd094 100644
--- a/Build
+++ b/Build
@@ -150,6 +150,10 @@ package "mspgui"
 			{
 				overlay "wgl";
 			};
+			if_feature "vulkan"
+			{
+				overlay "vkwin32";
+			};
 		};
 		if_arch "darwin"
 		{
diff --git a/source/graphics/vkwin32/vulkancontext.cpp b/source/graphics/vkwin32/vulkancontext.cpp
new file mode 100644
index 0000000..60361bc
--- /dev/null
+++ b/source/graphics/vkwin32/vulkancontext.cpp
@@ -0,0 +1,37 @@
+#include "vulkancontext.h"
+#include <msp/core/application.h>
+#include "vulkancontext_private.h"
+#include "display_private.h"
+#include "window_private.h"
+
+namespace Msp {
+namespace Graphics {
+
+void VulkanContext::add_platform_extensions(std::vector<const char *> &extensions) const
+{
+	extensions.push_back("VK_KHR_win32_surface");
+}
+
+void VulkanContext::init_platform_functions()
+{
+	VulkanFunctions &f = priv->functions;
+
+	f.vkCreateWin32Surface = get_function<PFN_vkCreateWin32SurfaceKHR>("vkCreateWin32SurfaceKHR");
+}
+
+void VulkanContext::init_surface()
+{
+	const VulkanFunctions &f = priv->functions;
+
+	VkWin32SurfaceCreateInfoKHR surface_create_info = { };
+	surface_create_info.sType = VK_STRUCTURE_TYPE_WIN32_SURFACE_CREATE_INFO_KHR;
+	surface_create_info.hinstance = static_cast<HINSTANCE>(Application::get_data());
+	surface_create_info.hwnd = window.get_private().window;
+
+	VkResult result = f.vkCreateWin32Surface(priv->instance, &surface_create_info, nullptr, &priv->surface);
+	if(result!=VK_SUCCESS)
+		throw vulkan_error(result, "vkCreateWin32Surface");
+}
+
+} // namespace Graphics
+} // namespace Msp
diff --git a/source/graphics/vkwin32/vulkancontext_platform.h b/source/graphics/vkwin32/vulkancontext_platform.h
new file mode 100644
index 0000000..b3a82c0
--- /dev/null
+++ b/source/graphics/vkwin32/vulkancontext_platform.h
@@ -0,0 +1,20 @@
+#ifndef MSP_GRAPHICS_VULKANCONTEXT_PLATFORM_H_
+#define MSP_GRAPHICS_VULKANCONTEXT_PLATFORM_H_
+
+#define VK_USE_PLATFORM_WIN32_KHR
+#define WIN32_LEAN_AND_MEAN
+#define NOMINMAX
+#include <vulkan/vulkan.h>
+
+namespace Msp {
+namespace Graphics {
+
+struct VulkanPlatformFunctions
+{
+	PFN_vkCreateWin32SurfaceKHR vkCreateWin32Surface = nullptr;
+};
+
+} // namespace Graphics
+} // namespace Msp
+
+#endif
-- 
2.45.2