refa Move BluCan initialization to BluCat folderHEADmaster

1 files changed, 503 insertions, 0 deletions

diff --git a/src/blucat/core.cpp b/src/blucat/core.cpp
new file mode 100644
index 0000000..8478f86
--- /dev/null
+++ b/src/blucat/core.cpp
@@ -0,0 +1,503 @@
+/*
+ * Copyright 2022-2024 Frederico de Oliveira Linhares
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "core.hpp"
+
+namespace
+{
+
+#ifdef DEBUG
+VKAPI_ATTR VkBool32 VKAPI_CALL
+vk_debug_callback(
+	VkDebugUtilsMessageSeverityFlagBitsEXT message_severity,
+	VkDebugUtilsMessageTypeFlagsEXT message_type,
+	const VkDebugUtilsMessengerCallbackDataEXT* callback_data,
+	void* _obj)
+{
+	// Set level.
+	Log::Level log_level;
+	switch(message_severity)
+	{
+	case VK_DEBUG_UTILS_MESSAGE_SEVERITY_VERBOSE_BIT_EXT:
+		log_level = Log::Level::Trace;
+		break;
+	case VK_DEBUG_UTILS_MESSAGE_SEVERITY_INFO_BIT_EXT:
+		log_level = Log::Level::Information;
+		break;
+	case VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT:
+		log_level = Log::Level::Warning;
+		break;
+	case VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT:
+	default:
+		log_level = Log::Level::Error;
+		break;
+	}
+
+	// Log message.
+	BluCat::core.log.message(log_level, callback_data->pMessage);
+
+	return VK_FALSE;
+}
+#endif
+
+void
+load_threads(void *obj)
+{
+	auto num_threads{std::thread::hardware_concurrency() - 1};
+	for(auto i{0}; i < num_threads; i++)
+		BluCat::core.threads.emplace_back(
+			BluCat::core.workers.emplace_back(&BluCat::core.job_queue));
+}
+
+void
+unload_threads(void *obj)
+{
+	BluCat::core.job_queue.stop();
+	for(auto &t: BluCat::core.threads) t.join();
+}
+
+void
+load_fps(void *obj)
+{
+  using namespace std::chrono;
+
+	BluCat::core.max_frame_duration =
+		duration<long long, std::milli>(1000 / BluCat::core.fps);
+	// FIXME: actually calculates the real delta time.
+	BluCat::core.delta_time = 1.0f / BluCat::core.fps;
+}
+
+void
+load_font_library(void *obj)
+{
+	FT_Error error{FT_Init_FreeType(&BluCat::core.font_library)};
+	if(error) throw CommandError{"Failed to open the FreeType library."};
+}
+
+void
+unload_font_library(void *obj)
+{
+	FT_Done_FreeType(BluCat::core.font_library);
+}
+
+#ifdef DEBUG
+void
+load_vk_debug_callback(void *obj)
+{
+  PFN_vkCreateDebugUtilsMessengerEXT debug_messenger;
+
+  // A Vulkan instance extension named VK_EXT_debug_utils and a Vulkan instance
+  // layer named VK_LAYER_LUNARG_standard_validation are required to enable
+  // this callback. These instance extension and instance layer are loaded at
+  // Instance::load_blucat_instance.
+  VkDebugUtilsMessengerCreateInfoEXT create_info;
+  create_info.sType = VK_STRUCTURE_TYPE_DEBUG_UTILS_MESSENGER_CREATE_INFO_EXT;
+  create_info.pNext = nullptr;
+  create_info.messageSeverity =
+      VK_DEBUG_UTILS_MESSAGE_SEVERITY_VERBOSE_BIT_EXT |
+      VK_DEBUG_UTILS_MESSAGE_SEVERITY_INFO_BIT_EXT |
+      VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT |
+      VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT;
+  create_info.messageType = VK_DEBUG_UTILS_MESSAGE_TYPE_GENERAL_BIT_EXT |
+			    VK_DEBUG_UTILS_MESSAGE_TYPE_VALIDATION_BIT_EXT |
+			    VK_DEBUG_UTILS_MESSAGE_TYPE_PERFORMANCE_BIT_EXT;
+  create_info.pfnUserCallback = vk_debug_callback;
+  create_info.pUserData = nullptr;
+  create_info.flags = 0;
+
+  debug_messenger = (PFN_vkCreateDebugUtilsMessengerEXT)
+    vkGetInstanceProcAddr(BluCat::core.vk_instance,
+			  "vkCreateDebugUtilsMessengerEXT");
+
+  if(debug_messenger(BluCat::core.vk_instance, &create_info, nullptr,
+		     &BluCat::core.vk_callback) != VK_SUCCESS)
+    CommandError{"Failed to setup debug callback for Vulkan."};
+}
+
+void
+unload_vk_debug_callback(void *obj)
+{
+  PFN_vkDestroyDebugUtilsMessengerEXT debug_messenger;
+
+  debug_messenger = (PFN_vkDestroyDebugUtilsMessengerEXT)
+    vkGetInstanceProcAddr(BluCat::core.vk_instance,
+			  "vkDestroyDebugUtilsMessengerEXT");
+
+  debug_messenger(BluCat::core.vk_instance, BluCat::core.vk_callback, nullptr);
+}
+#endif
+
+void
+load_devices(void *obj)
+{
+  uint32_t devices_count;
+  std::vector<VkPhysicalDevice> vk_physical_devices;
+
+  // Enumerate physical devices
+  {
+    vkEnumeratePhysicalDevices(
+			BluCat::core.vk_instance, &devices_count, nullptr);
+    if(devices_count < 1)
+      CommandError{"Failed to find GPUs with Vulkan support."};
+    vk_physical_devices.resize(devices_count);
+    vkEnumeratePhysicalDevices(
+      BluCat::core.vk_instance, &devices_count, vk_physical_devices.data());
+  }
+
+#ifdef DEBUG
+  BluCat::core.log.message(Log::Level::Trace, "Physical devices properties");
+#endif
+
+  BluCat::core.vk_devices.reserve(devices_count);
+  for(auto i = 0; i < devices_count; i++)
+  {
+    // Use swapchain on first device.
+    if(i == 0)
+    {
+      BluCat::core.vk_devices.emplace_back(vk_physical_devices[i], true);
+      BluCat::core.vk_device_with_swapchain = &BluCat::core.vk_devices[i];
+    }
+    else
+      BluCat::core.vk_devices.emplace_back(vk_physical_devices[i], false);
+  }
+}
+
+void
+unload_devices(void *obj)
+{
+  BluCat::core.vk_devices.clear();
+}
+
+static void
+load_swapchain(void *obj)
+{
+  try { BluCat::core.vk_swapchain = new BluCat::Swapchain(); }
+  catch(const CommandError &error)
+  {
+    std::string error_message{"Failed to create swapchain → "};
+    error_message += error.what();
+    throw CommandError{error_message};
+  }
+}
+
+void
+unload_swapchain(void *obj)
+{
+  delete BluCat::core.vk_swapchain;
+}
+
+void
+load_framebuffer(void *obj)
+{
+  try
+  {
+    BluCat::core.vk_framebuffer = new BluCat::Framebuffer();
+  }
+  catch(const CommandError &e)
+  {
+    throw CommandError{"Failed to create framebuffer."};
+  }
+}
+
+void
+unload_framebuffer(void *obj)
+{
+  delete BluCat::core.vk_framebuffer;
+}
+
+void
+load_render_pass(void *obj)
+{
+  try
+  {
+    BluCat::core.vk_render_pass = new BluCat::RenderPass();
+  }
+  catch(const CommandError &e)
+  {
+    throw CommandError{"Failed to create render pass."};
+  }
+}
+
+void
+unload_render_pass(void *obj)
+{
+  delete BluCat::core.vk_render_pass;
+}
+
+void
+load_descriptor_set_layout(void *obj)
+{
+  try
+  {
+    BluCat::core.vk_descriptor_set_layout = new BluCat::DescriptorSetLayout();
+  }
+  catch(const CommandError &e)
+  {
+    throw CommandError{"Failed to create descriptor set layouts."};
+  }
+}
+
+void
+unload_descriptor_set_layout(void *obj)
+{
+  delete BluCat::core.vk_descriptor_set_layout;
+}
+
+void
+load_graphics_pipeline_3d_layout(void *obj)
+{
+  try
+  {
+    BluCat::core.vk_graphics_pipeline_3d_layout =
+      new BluCat::GraphicsPipeline3DLayout();
+  }
+  catch(const CommandError &e)
+  {
+    throw CommandError{"Failed to create 3d graphics pipeline."};
+  }
+}
+
+void
+unload_graphics_pipeline_3d_layout(void *obj)
+{
+  delete BluCat::core.vk_graphics_pipeline_3d_layout;
+}
+
+void
+load_graphics_pipeline_2d_solid_layout(void *obj)
+{
+  try
+  {
+    BluCat::core.vk_graphics_pipeline_2d_solid_layout =
+      new BluCat::GraphicsPipeline2DSolidLayout();
+  }
+  catch(const CommandError &e)
+  {
+    throw CommandError{"Failed to create 2d graphics pipeline."};
+  }
+}
+
+void
+unload_graphics_pipeline_2d_solid_layout(void *obj)
+{
+  delete BluCat::core.vk_graphics_pipeline_2d_solid_layout;
+}
+
+void
+load_graphics_pipeline_2d_wired_layout(void *obj)
+{
+  try
+  {
+    BluCat::core.vk_graphics_pipeline_2d_wired_layout =
+      new BluCat::GraphicsPipeline2DWiredLayout();
+  }
+  catch(const CommandError &e)
+  {
+    throw CommandError{"Failed to create 2d graphics pipeline."};
+  }
+}
+
+void
+unload_graphics_pipeline_2d_wired_layout(void *obj)
+{
+  delete BluCat::core.vk_graphics_pipeline_2d_wired_layout;
+}
+
+void
+load_light(void *obj)
+{
+  try
+  {
+    BluCat::core.vk_light = new BluCat::Light();
+  }
+  catch(const CommandError &e)
+  {
+    throw CommandError{"Failed to descriptor sets for light."};
+  }
+}
+
+void
+unload_light(void *obj)
+{
+  delete BluCat::core.vk_light;
+}
+
+void
+load_graphics_pipeline_3d(void *obj)
+{
+  try
+  {
+    BluCat::core.vk_graphics_pipeline_3d =
+      std::make_unique<BluCat::GraphicsPipeline3D>();
+  }
+  catch(const CommandError &e)
+  {
+    throw CommandError{"Failed to create 3d graphics pipeline."};
+  }
+}
+
+void
+unload_graphics_pipeline_3d(void *obj)
+{
+  BluCat::core.vk_graphics_pipeline_3d = nullptr;
+}
+
+void
+load_graphics_pipeline_3d_skeletal(void *obj)
+{
+  try
+  {
+    BluCat::core.vk_graphics_pipeline_3d_skeletal =
+      std::make_unique<BluCat::GraphicsPipeline3DSkeletal>();
+  }
+  catch(const CommandError &e)
+  {
+    throw CommandError{"Failed to create 3d skeletal graphics pipeline."};
+  }
+}
+
+void
+unload_graphics_pipeline_3d_skeletal(void *obj)
+{
+  BluCat::core.vk_graphics_pipeline_3d_skeletal = nullptr;
+}
+
+void
+load_graphics_pipeline_sprite_3d(void *obj)
+{
+  try
+  {
+    BluCat::core.vk_graphics_pipeline_sprite_3d =
+      std::make_unique<BluCat::GraphicsPipelineSprite3D>();
+  }
+  catch(const CommandError &e)
+  {
+    throw CommandError{"Failed to create sprite 3d graphics pipeline."};
+  }
+}
+
+void
+unload_graphics_pipeline_sprite_3d(void *obj)
+{
+  BluCat::core.vk_graphics_pipeline_sprite_3d = nullptr;
+}
+
+void
+load_graphics_pipeline_2d_solid(void *obj)
+{
+  try
+  {
+    BluCat::core.vk_graphics_pipeline_2d_solid =
+      std::make_unique<BluCat::GraphicsPipeline2DSolid>();
+  }
+  catch(const CommandError &e)
+  {
+    throw CommandError{"Failed to create 2d graphics pipeline."};
+  }
+}
+
+void
+unload_graphics_pipeline_2d_solid(void *obj)
+{
+  BluCat::core.vk_graphics_pipeline_2d_solid = nullptr;
+}
+
+void
+load_graphics_pipeline_2d_wired(void *obj)
+{
+  try
+  {
+    BluCat::core.vk_graphics_pipeline_2d_wired =
+      std::make_unique<BluCat::GraphicsPipeline2DWired>();
+  }
+  catch(const CommandError &e)
+  {
+    throw CommandError{"Failed to create 2d graphics pipeline."};
+  }
+}
+
+void
+unload_graphics_pipeline_2d_wired(void *obj)
+{
+  BluCat::core.vk_graphics_pipeline_2d_wired = nullptr;
+}
+
+void
+load_renderer(void *obj)
+{
+  try
+  {
+    glm::vec4 region(
+      0.f, 0.f,
+      static_cast<float>(BluCat::core.display_width),
+      static_cast<float>(BluCat::core.display_height));
+		BluCat::core.vk_renderer = new BluCat::Renderer(
+      {},
+      {std::make_shared<BluCat::View3D>(region, region.z, region.w)});
+  }
+  catch(const CommandError &e)
+  {
+    throw CommandError{"Failed to create renderer."};
+  }
+}
+
+void
+unload_renderer(void *obj)
+{
+  delete BluCat::core.vk_renderer;
+}
+
+}
+
+namespace BluCat
+{
+
+std::random_device random_seed;
+std::mt19937 random_number_generator;
+
+const CommandChain Core::loader{
+  {&load_threads, &unload_threads},
+  {&load_fps, nullptr},
+  {&load_font_library, &unload_font_library},
+#ifdef DEBUG
+  {&load_vk_debug_callback, &unload_vk_debug_callback},
+#endif
+  {&load_devices, &unload_devices},
+  {&load_swapchain, &unload_swapchain},
+
+  {&load_render_pass, &unload_render_pass},
+  {&load_framebuffer, &unload_framebuffer},
+  {&load_descriptor_set_layout, &unload_descriptor_set_layout},
+  {&load_graphics_pipeline_3d_layout,
+   &unload_graphics_pipeline_3d_layout},
+  {&load_graphics_pipeline_2d_solid_layout,
+   &unload_graphics_pipeline_2d_solid_layout},
+  {&load_graphics_pipeline_2d_wired_layout,
+   &unload_graphics_pipeline_2d_wired_layout},
+  {&load_light, &unload_light},
+	{&load_graphics_pipeline_3d_skeletal,
+	 &unload_graphics_pipeline_3d_skeletal},
+  {&load_graphics_pipeline_3d, &unload_graphics_pipeline_3d},
+  {&load_graphics_pipeline_sprite_3d,
+   &unload_graphics_pipeline_sprite_3d},
+  {&load_graphics_pipeline_2d_solid, &unload_graphics_pipeline_2d_solid},
+  {&load_graphics_pipeline_2d_wired, &unload_graphics_pipeline_2d_wired},
+  {&load_renderer, &unload_renderer},
+};
+
+Core core;
+
+}