vk debugger and physical device selection

omg.

1 files changed, 148 insertions, 1 deletions

diff --git a/src/renderer/backends/vulkan_helpers.h b/src/renderer/backends/vulkan_helpers.h
index 058ea91..8f4d48a 100644
--- a/src/renderer/backends/vulkan_helpers.h
+++ b/src/renderer/backends/vulkan_helpers.h
@@ -2,9 +2,14 @@
 
 #include <assert.h>
 #include <vulkan/vulkan.h>
+#include <vulkan/vulkan_core.h>
 
 #include "darray.h"
 #include "defines.h"
+#include "log.h"
+#include "str.h"
+
+#define VULKAN_PHYS_DEVICE_MAX_EXTENSION_NAMES 36
 
 DECL_TYPED_ARRAY(const char*, cstr)
 
@@ -16,4 +21,146 @@ static void plat_get_required_extension_names(cstr_darray* extensions) {
 
 // TODO(omni): port to using internal assert functions
 #define VK_CHECK(vulkan_expr) \
-  { assert(vulkan_expr == VK_SUCCESS); }
\ No newline at end of file
+  { assert(vulkan_expr == VK_SUCCESS); }
+
+// TODO: typedef struct vk_debugger {} vk_debugger;
+
+typedef struct vulkan_physical_device_requirements {
+  bool graphics;
+  bool present;
+  bool compute;
+  bool transfer;
+  str8 device_ext_names[VULKAN_PHYS_DEVICE_MAX_EXTENSION_NAMES];
+  size_t device_ext_name_count;
+  bool sampler_anistropy;
+  bool discrete_gpu;
+} vulkan_physical_device_requirements;
+
+typedef struct vulkan_physical_device_queue_family_info {
+  u32 graphics_family_index;
+  u32 present_family_index;
+  u32 compute_family_index;
+  u32 transfer_family_index;
+} vulkan_physical_device_queue_family_info;
+
+#define VULKAN_MAX_DEFAULT 32
+
+typedef struct vulkan_swapchain_support_info {
+  VkSurfaceCapabilitiesKHR capabilities;
+  VkSurfaceFormatKHR formats[VULKAN_MAX_DEFAULT];
+  u32 format_count;
+  VkPresentModeKHR present_modes[VULKAN_MAX_DEFAULT];
+  u32 mode_count;
+} vulkan_swapchain_support_info;
+
+VKAPI_ATTR VkBool32 VKAPI_CALL vk_debug_callback(
+    VkDebugUtilsMessageSeverityFlagBitsEXT severity, VkDebugUtilsMessageTypeFlagsEXT flags,
+    const VkDebugUtilsMessengerCallbackDataEXT callback_data, void* user_data);
+
+void vulkan_device_query_swapchain_support(VkPhysicalDevice device, VkSurfaceKHR surface,
+                                           vulkan_swapchain_support_info* out_support_info) {
+  // TODO: add VK_CHECK to these calls!
+
+  // Surface capabilities
+  vkGetPhysicalDeviceSurfaceCapabilitiesKHR(device, surface, &out_support_info->capabilities);
+
+  // Surface formats
+  vkGetPhysicalDeviceSurfaceFormatsKHR(device, surface, &out_support_info->format_count,
+                                       0);  // Get number of formats
+  if (out_support_info->format_count > 0) {
+    vkGetPhysicalDeviceSurfaceFormatsKHR(device, surface, &out_support_info->format_count,
+                                         out_support_info->formats);
+  }
+
+  // Present Modes
+  vkGetPhysicalDeviceSurfacePresentModesKHR(device, surface, &out_support_info->mode_count,
+                                            0);  // Get number of formats
+  if (out_support_info->mode_count > 0) {
+    vkGetPhysicalDeviceSurfacePresentModesKHR(device, surface, &out_support_info->mode_count,
+                                              out_support_info->present_modes);
+  }
+}
+
+static bool physical_device_meets_requirements(
+    VkPhysicalDevice device, VkSurfaceKHR surface, const VkPhysicalDeviceProperties* properties,
+    const VkPhysicalDeviceFeatures* features,
+    const vulkan_physical_device_requirements* requirements,
+    vulkan_physical_device_queue_family_info* out_queue_info,
+    vulkan_swapchain_support_info* out_swapchain_support) {
+  // TODO: pass in an arena
+
+  out_queue_info->graphics_family_index = -1;
+  out_queue_info->present_family_index = -1;
+  out_queue_info->compute_family_index = -1;
+  out_queue_info->transfer_family_index = -1;
+
+  if (requirements->discrete_gpu) {
+    if (properties->deviceType != VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU) {
+      TRACE("Device is not a physical GPU. Skipping.");
+      return false;
+    }
+  }
+
+  u32 queue_family_count = 0;
+  vkGetPhysicalDeviceQueueFamilyProperties(device, &queue_family_count, 0);
+  VkQueueFamilyProperties queue_families[queue_family_count];
+  vkGetPhysicalDeviceQueueFamilyProperties(device, &queue_family_count, queue_families);
+
+  INFO("Graphics | Present | Compute | Transfer | Name");
+  u8 min_transfer_score = 255;
+  for (u32 i = 0; i < queue_family_count; i++) {
+    u8 current_transfer_score = 0;
+
+    // Graphics queue
+    if (queue_families[i].queueFlags & VK_QUEUE_GRAPHICS_BIT) {
+      out_queue_info->graphics_family_index = i;
+      current_transfer_score++;
+    }
+
+    // Compute queue
+    if (queue_families[i].queueFlags & VK_QUEUE_COMPUTE_BIT) {
+      out_queue_info->compute_family_index = i;
+      current_transfer_score++;
+    }
+
+    // Transfer queue
+    if (queue_families[i].queueFlags & VK_QUEUE_TRANSFER_BIT) {
+      // always take the lowest score transfer index
+      if (current_transfer_score <= min_transfer_score) {
+        min_transfer_score = current_transfer_score;
+        out_queue_info->transfer_family_index = i;
+      }
+    }
+
+    // Present Queue
+    VkBool32 supports_present = VK_FALSE;
+    vkGetPhysicalDeviceSurfaceSupportKHR(device, i, surface, &supports_present);
+    if (supports_present) {
+      out_queue_info->present_family_index = i;
+    }
+  }
+
+  INFO("       %d |       %d |       %d |        %d | %s",
+       out_queue_info->graphics_family_index != -1, out_queue_info->present_family_index != -1,
+       out_queue_info->compute_family_index != -1, out_queue_info->transfer_family_index != -1,
+       properties->deviceName);
+  TRACE("Graphics Family queue index: %d", out_queue_info->graphics_family_index);
+  TRACE("Present Family queue index: %d", out_queue_info->present_family_index);
+  TRACE("Compute Family queue index: %d", out_queue_info->compute_family_index);
+  TRACE("Transfer Family queue index: %d", out_queue_info->transfer_family_index);
+
+  if ((!requirements->graphics ||
+       (requirements->graphics && out_queue_info->graphics_family_index != -1))) {
+    INFO("Physical device meets our requirements! Proceed.");
+
+    vulkan_device_query_swapchain_support(
+        device, surface, out_swapchain_support
+
+        // TODO: error handling i.e. format count = 0 or present mode = 0
+
+    );
+    return true;
+  }
+
+  return false;
+}
\ No newline at end of file