From 78bafe88face6f245afbbf0673e8a7310034b271 Mon Sep 17 00:00:00 2001
From: georgemoralis <giorgosmrls@gmail.com>
Date: Mon, 18 Sep 2023 14:52:16 +0300
Subject: [PATCH] even more vulkan init

---
 src/Core/PS4/HLE/Graphics/graphics_ctx.h |  1 +
 src/emulator.h                           | 17 +++++++++++
 src/vulkan_util.cpp                      | 39 +++++++++++++++++++++---
 src/vulkan_util.h                        | 24 ++++++---------
 4 files changed, 61 insertions(+), 20 deletions(-)

diff --git a/src/Core/PS4/HLE/Graphics/graphics_ctx.h b/src/Core/PS4/HLE/Graphics/graphics_ctx.h
index 330fad57..39f553b7 100644
--- a/src/Core/PS4/HLE/Graphics/graphics_ctx.h
+++ b/src/Core/PS4/HLE/Graphics/graphics_ctx.h
@@ -7,5 +7,6 @@ struct GraphicCtx {
     u32 screen_width = 0;
     u32 screen_height = 0;
     VkInstance m_instance = nullptr;
+    VkPhysicalDevice physical_device = nullptr;
 };
 }  // namespace HLE::Libs::Graphics
\ No newline at end of file
diff --git a/src/emulator.h b/src/emulator.h
index 143eb18f..bcb9e775 100644
--- a/src/emulator.h
+++ b/src/emulator.h
@@ -2,8 +2,24 @@
 #include <Core/PS4/HLE/Graphics/graphics_ctx.h>
 #include <Lib/Threads.h>
 #include <SDL.h>
+#include <vector>
+
 
 namespace Emulator {
+
+struct VulkanExt {
+    bool enable_validation_layers = false;
+
+    std::vector<const char*> required_extensions;
+    std::vector<VkExtensionProperties> available_extensions;
+    std::vector<const char*> required_layers;
+    std::vector<VkLayerProperties> available_layers;
+};
+
+struct VulkanSurfaceCapabilities {};
+
+struct VulkanQueues {};
+
 struct WindowCtx {
     HLE::Libs::Graphics::GraphicCtx m_graphic_ctx;
     Lib::Mutex m_mutex;
@@ -12,6 +28,7 @@ struct WindowCtx {
     SDL_Window* m_window = nullptr;
     bool is_window_hidden = true;
     VkSurfaceKHR m_surface = nullptr;
+    VulkanSurfaceCapabilities* m_surface_capabilities = nullptr;
 };
 
 struct EmuPrivate {
diff --git a/src/vulkan_util.cpp b/src/vulkan_util.cpp
index 28cb185f..6c191496 100644
--- a/src/vulkan_util.cpp
+++ b/src/vulkan_util.cpp
@@ -1,14 +1,15 @@
 #include "vulkan_util.h"
+
+#include <SDL_vulkan.h>
 #include <Util/log.h>
 #include <debug.h>
-#include <SDL_vulkan.h>
 #include <vulkan/vulkan_core.h>
 
 constexpr bool log_file_vulkanutil = true;  // disable it to disable logging
 
 void Graphics::Vulkan::vulkanCreate(Emulator::WindowCtx* ctx) {
-    VulkanExt ext;
-    vulkanGetExtensions(&ext);
+    Emulator::VulkanExt ext;
+    vulkanGetInstanceExtensions(&ext);
 
     VkApplicationInfo app_info{};
     app_info.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
@@ -42,9 +43,19 @@ void Graphics::Vulkan::vulkanCreate(Emulator::WindowCtx* ctx) {
         LOG_CRITICAL_IF(log_file_vulkanutil, "Can't create an vulkan surface\n");
         std::exit(0);
     }
+
+    // TODO i am not sure if it's that it is neccesary or if it needs more
+    std::vector<const char*> device_extensions = {VK_KHR_SWAPCHAIN_EXTENSION_NAME, VK_EXT_DEPTH_CLIP_ENABLE_EXTENSION_NAME,
+                                                  VK_EXT_COLOR_WRITE_ENABLE_EXTENSION_NAME, "VK_KHR_maintenance1"};
+
+    ctx->m_surface_capabilities = new Emulator::VulkanSurfaceCapabilities{};
+    Emulator::VulkanQueues queues;
+
+    vulkanFindCompatiblePhysicalDevice(ctx->m_graphic_ctx.m_instance, ctx->m_surface, device_extensions, ctx->m_surface_capabilities,
+                                       &ctx->m_graphic_ctx.physical_device, &queues);
 }
 
-void Graphics::Vulkan::vulkanGetExtensions(VulkanExt* ext) {
+void Graphics::Vulkan::vulkanGetInstanceExtensions(Emulator::VulkanExt* ext) {
     u32 required_extensions_count = 0;
     u32 available_extensions_count = 0;
     u32 available_layers_count = 0;
@@ -73,6 +84,24 @@ void Graphics::Vulkan::vulkanGetExtensions(VulkanExt* ext) {
     }
 
     for (const auto& l : ext->available_layers) {
-        LOG_INFO_IF(log_file_vulkanutil, "Vulkan available layer: {}, specVersion = {}, implVersion = {}, {}\n", l.layerName, l.specVersion,l.implementationVersion,l.description);
+        LOG_INFO_IF(log_file_vulkanutil, "Vulkan available layer: {}, specVersion = {}, implVersion = {}, {}\n", l.layerName, l.specVersion,
+                    l.implementationVersion, l.description);
+    }
+}
+
+void Graphics::Vulkan::vulkanFindCompatiblePhysicalDevice(VkInstance instance, VkSurfaceKHR surface,
+                                                          const std::vector<const char*>& device_extensions,
+                                                          Emulator::VulkanSurfaceCapabilities* out_capabilities, VkPhysicalDevice* out_device,
+                                                          Emulator::VulkanQueues* out_queues) {
+    u32 count_devices = 0;
+    vkEnumeratePhysicalDevices(instance, &count_devices, nullptr);
+
+    std::vector<VkPhysicalDevice> devices(count_devices);
+    vkEnumeratePhysicalDevices(instance, &count_devices, devices.data());
+
+    VkPhysicalDevice found_best_device = nullptr;
+    Emulator::VulkanQueues found_best_queues;
+
+    for (const auto& device : devices) {
     }
 }
diff --git a/src/vulkan_util.h b/src/vulkan_util.h
index cba04d26..a7299118 100644
--- a/src/vulkan_util.h
+++ b/src/vulkan_util.h
@@ -1,21 +1,15 @@
 #pragma once
-#include "emulator.h"
 #include <SDL.h>
-#include <vector>
 #include <src/video/khronos/vulkan/vulkan_core.h>
 
+#include <vector>
+
+#include "emulator.h"
+
 namespace Graphics::Vulkan {
 
-struct VulkanExt {
-    bool enable_validation_layers = false;
-
-    std::vector<const char*> required_extensions;
-    std::vector<VkExtensionProperties> available_extensions;
-    std::vector<const char*> required_layers;
-    std::vector<VkLayerProperties> available_layers;
-};
-
-void vulkanCreate(Emulator::WindowCtx *ctx);
-void vulkanGetExtensions(VulkanExt* ext);
-
-};
\ No newline at end of file
+void vulkanCreate(Emulator::WindowCtx* ctx);
+void vulkanGetInstanceExtensions(Emulator::VulkanExt* ext);
+void vulkanFindCompatiblePhysicalDevice(VkInstance instance, VkSurfaceKHR surface, const std::vector<const char*>& device_extensions,
+                                       Emulator::VulkanSurfaceCapabilities* out_capabilities, VkPhysicalDevice* out_device, Emulator::VulkanQueues* out_queues);
+};  // namespace Graphics::Vulkan
\ No newline at end of file