From b68f018fad6f53abfb9e7b7153c9c701e175c239 Mon Sep 17 00:00:00 2001
From: georgemoralis <giorgosmrls@gmail.com>
Date: Tue, 19 Sep 2023 14:02:40 +0300
Subject: [PATCH] Added vulkanGetSurfaceCapabilities

---
 src/emulator.h      |  8 +++++++-
 src/vulkan_util.cpp | 30 ++++++++++++++++++++++++++++++
 src/vulkan_util.h   |  2 ++
 3 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/src/emulator.h b/src/emulator.h
index 8d34ef67..2f3be030 100644
--- a/src/emulator.h
+++ b/src/emulator.h
@@ -16,7 +16,13 @@ struct VulkanExt {
     std::vector<VkLayerProperties> available_layers;
 };
 
-struct VulkanSurfaceCapabilities {};
+struct VulkanSurfaceCapabilities {
+    VkSurfaceCapabilitiesKHR capabilities{};
+    std::vector<VkSurfaceFormatKHR> formats;
+    std::vector<VkPresentModeKHR> present_modes;
+    bool is_format_srgb_bgra32 = false;
+    bool is_format_unorm_bgra32 = false;
+};
 
 struct VulkanQueues {
     u32 family_count = 0;
diff --git a/src/vulkan_util.cpp b/src/vulkan_util.cpp
index 9552332d..f37d0848 100644
--- a/src/vulkan_util.cpp
+++ b/src/vulkan_util.cpp
@@ -116,6 +116,8 @@ void Graphics::Vulkan::vulkanFindCompatiblePhysicalDevice(VkInstance instance, V
         LOG_INFO_IF(log_file_vulkanutil,"Vulkan device: {}\n", device_properties.deviceName);
 
         auto qs = vulkanFindQueues(device, surface);
+
+        vulkanGetSurfaceCapabilities(device, surface, out_capabilities);
     }
 }
 
@@ -142,3 +144,31 @@ Emulator::VulkanQueues Graphics::Vulkan::vulkanFindQueues(VkPhysicalDevice devic
 
     return qs;
 }
+
+void Graphics::Vulkan::vulkanGetSurfaceCapabilities(VkPhysicalDevice physical_device, VkSurfaceKHR surface, Emulator::VulkanSurfaceCapabilities* surfaceCap) {
+    vkGetPhysicalDeviceSurfaceCapabilitiesKHR(physical_device, surface, &surfaceCap->capabilities);
+
+    uint32_t formats_count = 0;
+    vkGetPhysicalDeviceSurfaceFormatsKHR(physical_device, surface, &formats_count, nullptr);
+
+    surfaceCap->formats = std::vector<VkSurfaceFormatKHR>(formats_count);
+    vkGetPhysicalDeviceSurfaceFormatsKHR(physical_device, surface, &formats_count, surfaceCap->formats.data());
+
+    uint32_t present_modes_count = 0;
+    vkGetPhysicalDeviceSurfacePresentModesKHR(physical_device, surface, &present_modes_count, nullptr);
+
+
+    surfaceCap->present_modes = std::vector<VkPresentModeKHR>(present_modes_count);
+    vkGetPhysicalDeviceSurfacePresentModesKHR(physical_device, surface, &present_modes_count, surfaceCap->present_modes.data());
+
+    for (const auto& f : surfaceCap->formats) {
+        if (f.format == VK_FORMAT_B8G8R8A8_SRGB && f.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR) {
+            surfaceCap->is_format_srgb_bgra32 = true;
+            break;
+        }
+        if (f.format == VK_FORMAT_B8G8R8A8_UNORM && f.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR) {
+            surfaceCap->is_format_unorm_bgra32 = true;
+            break;
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/vulkan_util.h b/src/vulkan_util.h
index 995edefc..0afabddf 100644
--- a/src/vulkan_util.h
+++ b/src/vulkan_util.h
@@ -13,4 +13,6 @@ 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);
 Emulator::VulkanQueues vulkanFindQueues(VkPhysicalDevice device, VkSurfaceKHR surface);
+void vulkanGetSurfaceCapabilities(VkPhysicalDevice physical_device, VkSurfaceKHR surface,
+                                                    Emulator::VulkanSurfaceCapabilities* surfaceCap);
 };  // namespace Graphics::Vulkan
\ No newline at end of file