Add wrap dependency for vulkan headers

Don't expect the vulkan headers to be present on the development system. Instead, download the using meson wrap.

Signed-off-by: Piotr Krygier <piotrkrygier@everyonecancode.xyz>

.gitignore

@@ -52,5 +52,7 @@ CMakeFiles/
 .clangd/
 compile_commands.json
 
-# Environment preparation scripts
-setup-env.sh
+# Ignore subproject path except config files
+subprojects/*
+!subprojects/packagefiles/
+!subprojects/*.wrap

events/meson.build

@@ -0,0 +1,18 @@
+rse_events_sources = [
+  'src/events_manager.c'
+  ]
+
+sdl3_dep = dependency('sdl3',
+                      version : '>=3.4.0')
+
+rse_events_lib = shared_library(
+  'rse_events',
+  rse_events_sources,
+  include_directories : [
+    '../'
+    ],
+  dependencies : [sdl3_dep,
+                  ],
+  link_with: rse_utilities_lib,
+  install : true
+  )

events/rse_events_manager.h

@@ -0,0 +1,26 @@
+/**
+ * @file events_manager.h
+ * @author Piotr Krygier (piotrkrygier@everyonencancode.xyz)
+ * @brief Events manager for Red Scarf Engine
+ * @version 0.1
+ * @date 2026-03-02
+ *
+ * @copyright Copyright (c) 2026
+ *
+ */
+
+#ifndef RSE_EVENTS_MANAGER_H_
+#define RSE_EVENTS_MANAGER_H_
+
+#include "src/events_context.h"
+#include "utilities/commons.h"
+
+rse_err_t rse_events_init(struct events_context_t* events_context);
+
+rse_err_t rse_events_set_event_handler(struct events_context_t* events_context,
+                                       enum EVENT_HANDLER event_type,
+                                       rse_event_handler_t event_handler);
+
+rse_err_t rse_events_main_loop(struct events_context_t* context);
+
+#endif /* RSE_EVENTS_MANAGER_H_ */

events/src/events_context.h

@@ -0,0 +1,44 @@
+/**
+ * @file events_context.h
+ * @author Piotr Krygier (piotrkrygier@everyonencancode.xyz)
+ * @brief Events context for Red Scarf Engine
+ * @version 0.1
+ * @date 2026-03-02
+ *
+ * @copyright Copyright (c) 2026
+ *
+ */
+
+#ifndef EVENT_CONTEXT_H_
+#define EVENT_CONTEXT_H_
+
+#include "SDL3/SDL_mouse.h"
+#include "utilities/commons.h"
+
+enum EVENT_HANDLER {
+    EVENT_HANDLER_QUIT,
+    EVENT_HANDLER_MOUSE,
+    EVENT_HANDLER_LAST
+};
+
+enum EVENT_SHOULD_STOP_ENGINE {
+    EVENT_SHOULD_STOP_ENGINE_FALSE,
+    EVENT_SHOULD_STOP_ENGINE_TRUE
+};
+
+struct mouse_event_data_t
+{
+    float x_pos;
+    float y_pos;
+    SDL_MouseButtonFlags mouse_buttons;
+};
+
+typedef rse_err_t (*rse_event_handler_t)(void*);
+
+struct events_context_t
+{
+    enum EVENT_SHOULD_STOP_ENGINE should_stop;
+    rse_event_handler_t event_handlers[EVENT_HANDLER_LAST];
+};
+
+#endif /* EVENT_CONTEXT_H_ */

events/src/events_manager.c

@@ -0,0 +1,99 @@
+/**
+ * @file events_manager.c
+ * @author Piotr Krygier (piotrkrygier@everyonencancode.xyz)
+ * @brief Events manager for Red Scarf Engine
+ * @version 0.1
+ * @date 2026-03-02
+ *
+ * @copyright Copyright (c) 2026
+ *
+ */
+
+#include "SDL3/SDL_events.h"
+#include "SDL3/SDL_log.h"
+#include "SDL3/SDL_mouse.h"
+#include "events_context.h"
+#include "rse_events_manager.h"
+#include "utilities/commons.h"
+#include "utilities/errors_common.h"
+
+static rse_err_t default_event(void* args)
+{
+    (void)args;
+
+    return RSE_ERROR_NO_ERROR;
+}
+
+static rse_err_t run_custom_event_handler(struct events_context_t* context,
+                                          enum EVENT_HANDLER event_handler,
+                                          void* args)
+{
+    return context->event_handlers[event_handler](args);
+}
+
+static rse_err_t quit_event(struct events_context_t* context)
+{
+    context->should_stop = EVENT_SHOULD_STOP_ENGINE_TRUE;
+
+    return run_custom_event_handler(context, EVENT_HANDLER_QUIT, NULL);
+}
+
+static rse_err_t mouse_event(struct events_context_t* context)
+{
+    struct mouse_event_data_t mouse_data = {0};
+
+    mouse_data.mouse_buttons = SDL_GetMouseState(&mouse_data.x_pos, &mouse_data.y_pos);
+
+    return run_custom_event_handler(context, EVENT_HANDLER_MOUSE, (void*)&mouse_data);
+}
+
+rse_err_t rse_events_init(struct events_context_t* events_context)
+{
+    size_t i = 0U;
+
+    for (i = 0U; i < EVENT_HANDLER_LAST; ++i) {
+        events_context->event_handlers[i] = default_event;
+    }
+
+    return RSE_ERROR_NO_ERROR;
+}
+
+rse_err_t rse_events_set_event_handler(struct events_context_t* events_context,
+                                       enum EVENT_HANDLER event_type,
+                                       rse_event_handler_t event_handler)
+{
+    if (event_type >= EVENT_HANDLER_LAST) {
+        SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION, "Invalid event type selected");
+
+        return RSE_ERROR_INVALID_PARAM;
+    }
+
+    if (event_handler == NULL) {
+        SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION, "Provided NULL event handler");
+
+        return RSE_ERROR_INVALID_PARAM;
+    }
+
+    events_context->event_handlers[event_type] = event_handler;
+
+    return RSE_ERROR_NO_ERROR;
+}
+
+rse_err_t rse_events_main_loop(struct events_context_t* context)
+{
+    SDL_Event event;
+    rse_err_t status = RSE_ERROR_NO_ERROR;
+
+    while (SDL_PollEvent(&event)) {
+        switch (event.type) {
+            case SDL_EVENT_QUIT:
+                STATUS_CHECK(quit_event(context));
+                break;
+            case SDL_EVENT_MOUSE_BUTTON_DOWN:
+                STATUS_CHECK(mouse_event(context));
+                break;
+        }
+    }
+
+    return status;
+}

graphics/meson.build

@@ -9,41 +9,50 @@ rse_graphics_sources = [
   'src/vulkan_base.c',
   'src/vulkan_buffers.c',
   'src/vulkan_commands.c',
-  'src/vulkan_commons.c',
   'src/vulkan_image.c',
   'src/vulkan_render_pass.c',
   'src/vulkan_swapchain.c',
   'src/window.c',
-  ]
+]
 
-vulkan_dep = dependency('vulkan',
-                        version : '>=1.4.335')
+vulkan_headers_dep = dependency('VulkanHeaders')
 
-sdl3_dep = dependency('sdl3',
-                      version : '>=3.4.0')
+vulkan_dep = dependency('Vulkan')
 
-freetype_dep = dependency('freetype2',
-                          version : '>=22.1.16')
-glm_dep = dependency('glm',
-                      version : '>=1.0.3',
-                      method : 'cmake')
-vma_dep = dependency('VulkanMemoryAllocator',
-                      version : '>=3.3.0',
-                      modules : ['GPUOpen::VulkanMemoryAllocator'])
+sdl3_dep = dependency('sdl3', version: '>=3.4.0')
+
+freetype_dep = dependency('freetype2', version: '>=22.1.16')
+glm_dep = dependency('cglm', version: '>=0.9.6', method: 'cmake')
+
+vma_dep = dependency('VulkanMemoryAllocator', version: '>=3.3.0')
+
+stb = dependency('stb',
+          fallback: ['stb', 'stb_dep'])
 
 rse_graphics_lib = shared_library(
   'rse_graphics',
   rse_graphics_sources,
-  include_directories : [
-    '../'
-    ],
-  dependencies : [vulkan_dep,
+  include_directories: ['../'],
+  dependencies: [
+    vulkan_headers_dep,
+    vulkan_dep,
     vma_dep,
     sdl3_dep,
     freetype_dep,
     glm_dep,
-                  stb_dep,
+    stb
   ],
   link_with: rse_utilities_lib,
-  install : true
-  )
+  install: true,
+)
+
+rse_graphics_lib_dep = declare_dependency(
+  link_with: rse_graphics_lib,
+  dependencies:  [
+    vulkan_headers_dep,
+    vulkan_dep,
+    vma_dep,
+    glm_dep
+    ],
+  include_directories: include_directories('.')
+)

graphics/rse_graphics.h

@@ -1,10 +1,9 @@
 #ifndef RSE_GRAPHICS_H
 #define RSE_GRAPHICS_H
 
+#include "src/graphics_context.h"
 #include "utilities/commons.h"
 
-struct rse_graphics_context_t;
-
 /**
  * @brief Initializes graphics backend. This has to be called before any new mesh, texture or any other object is
  * added
@@ -12,20 +11,24 @@ struct rse_graphics_context_t;
  * @param context Graphics context handle. Must be NULL!
  * @return rse_err_t RSE_ERROR_NO_ERROR on success
  */
-rse_err_t rse_graphics_init(struct rse_graphics_context_t** context);
+rse_err_t rse_graphics_init(struct graphics_context_t* context);
 
 /**
  * @brief Runs graphics engine. This has to be called after all objects are added to the scene
  *
  * @return rse_err_t RSE_ERROR_NO_ERROR on success
  */
-int rse_graphics_run(void* arg);
+rse_err_t rse_graphics_run(struct graphics_context_t* context);
 
 
+rse_err_t rse_graphics_main_loop(struct graphics_context_t* context);
+
 /**
  * @brief Custom function for testing engine. TODO: Remove it whe releasing
  *
  */
-rse_err_t rse_graphics_test_function(struct rse_graphics_context_t* context);
+rse_err_t rse_graphics_test_function(struct graphics_context_t* context);
+
+void rse_graphics_deinit(struct graphics_context_t* context);
 
 #endif /* RSE_GRAPHICS_H */

graphics/shaders/shader.vert

@@ -1,13 +1,11 @@
 #version 450
 
-layout(binding = 0) uniform UniformBufferObject {
+layout(push_constant) uniform pc {
     mat4 model;
     mat4 view;
     mat4 proj;
 } ubo;
 
-#define MAX_INSTANCES 1024
-
 struct InstanceData
 {
     vec3 pos;
@@ -16,8 +14,8 @@ struct InstanceData
     uint texture_id;
 };
 
-layout(binding = 1) uniform InstanceUniformBuffer {
-    InstanceData instances[MAX_INSTANCES];
+layout(set=0, binding = 0, std430) readonly buffer InstanceBuffer {
+    InstanceData instances[];
 };
 
 layout(location = 0) in vec3 inPosition;

graphics/shaders/solid_objects.frag

@@ -1,7 +1,7 @@
 #version 450
 #extension GL_EXT_nonuniform_qualifier : enable
 
-layout(set = 0, binding = 2) uniform sampler2D texSampler[];
+layout(set = 0, binding = 1) uniform sampler2D texSampler[];
 
 layout(location = 0) in vec3 fragColor;
 layout(location = 1) in vec2 fragTexCoord;

graphics/src/graphics_context.h

@@ -21,7 +21,7 @@
 
 #include "utilities/entity.h"
 #include "utilities/vector.h"
-#include "vma/vk_mem_alloc.h"
+#include "vk_mem_alloc.h"
 #include "vulkan/vulkan_core.h"
 #include "vulkan_commons.h"
 
@@ -46,6 +46,7 @@
 #define MAX_VERTEX_BINDINGS_COUNT (32U)
 #define MAX_SHADER_ATTRIBUTES_COUNT (32U)
 #define MAX_DYNAMIC_STATES_COUNT (32U)
+#define MAX_PUSH_CONSTANTS_COUNT (32U)
 
 #define DESCRIPTOR_MAX_SETS (32U)
 #define DESCRIPTOR_TYPE_ID_MAX_ENUM (21U)
@@ -126,6 +127,12 @@ struct required_dynamic_states_t {
     VkDynamicState dynamic_states[MAX_DYNAMIC_STATES_COUNT];
 };
 
+struct push_constant_ranges_t
+{
+    size_t push_constant_ranges_count;
+    VkPushConstantRange  push_constant_ranges[MAX_PUSH_CONSTANTS_COUNT];
+};
+
 struct pipeline_infos_t
 {
     size_t pipeline_create_infos_count;
@@ -159,6 +166,7 @@ struct pipeline_t
     VkVertexInputAttributeDescription shader_attributes[MAX_SHADER_ATTRIBUTES_COUNT];
     size_t dynamic_states_count;
     VkDynamicState dynamic_states[MAX_DYNAMIC_STATES_COUNT];
+    struct push_constant_ranges_t push_constant_ranges;
     struct required_dynamic_states_t required_dynamic_states;
     struct descriptor_set_handle_t* descriptor_sets;
 };
@@ -273,6 +281,7 @@ struct graphics_context_t
     uint32_t current_frame;
     uint32_t swapchain_images_count;
     SDL_Window* window_handle;
+    struct mvp_data_t mvp_data;
     struct renderer_data_t renderer_data;
     struct debug_overlay_t debug_overlay;
     struct vulkan_handles vulkan_handles;

graphics/src/mesh_controller.c

@@ -10,14 +10,18 @@
  */
 #include <SDL3/SDL_log.h>
 #include <stdbool.h>
+#include <stddef.h>
 #include <string.h>
 
 #include "src/graphics_context.h"
 #include "src/vulkan_commons.h"
+#include "utilities/cgltf.h"
 #include "utilities/commons.h"
 #include "utilities/entity.h"
 #include "utilities/errors_common.h"
+#include "utilities/file_utils.h"
 #include "vulkan_buffers.h"
+#include "vulkan_image.h"
 
 rse_err_t mesh_create(struct graphics_context_t* context,
                       struct vertex_t* vertices,
@@ -46,6 +50,152 @@ rse_err_t mesh_create(struct graphics_context_t* context,
     return status;
 }
 
+rse_err_t mesh_create_from_file(struct graphics_context_t* context, const char* file_name, rse_id_t* mesh_id, rse_id_t* texture_id)
+{
+    struct vertex_t* vertices = NULL;
+    uint16_t* indices = NULL;
+    size_t indices_count = 0U;
+    size_t mesh_index = 0U;
+    size_t primitive_index = 0U;
+    size_t attribute_index = 0U;
+    cgltf_mesh* mesh = NULL;
+    cgltf_primitive* primitive = NULL;
+    cgltf_attribute* attribute = NULL;
+    size_t* position_data_offset = NULL;
+    size_t* color_data_offset = NULL;
+    size_t* texture_coord_data_offset = NULL;
+    size_t* indices_data_offset = NULL;
+    size_t* texture_data_offset = NULL;
+    int* texture_data_size  = NULL;
+    unsigned char *texture_pixel_buffer = NULL;
+    size_t data_count = 0U;
+    size_t data_index = 0U;
+    size_t tmp_offset = 0U;
+    uint8_t* bin = NULL;
+
+    (void)context;
+    (void)mesh_id;
+
+    cgltf_data* data = NULL;
+    rse_err_t status = RSE_ERROR_NO_ERROR;
+
+    STATUS_CHECK(file_load_gltf(file_name, &data));
+
+    for (mesh_index = 0U; mesh_index < data->meshes_count; ++mesh_index) {
+        mesh = &data->meshes[mesh_index];
+
+        for (primitive_index = 0U; primitive_index < mesh->primitives_count; ++primitive_index) {
+            primitive = &mesh->primitives[primitive_index];
+
+            if (primitive->indices == NULL) {
+                SDL_LogCritical(SDL_LOG_CATEGORY_GPU,
+                                "No indices for mesh found. Currently only indexed drawing is supported");
+                return RSE_ERROR_INVALID_PARAM;
+            } else {
+                rse_malloc(indices_data_offset, sizeof(size_t));
+                *indices_data_offset = primitive->indices->buffer_view->offset;
+                indices_count = primitive->indices->count;
+                rse_malloc(indices, (sizeof(uint16_t) * indices_count));
+            }
+
+            if (primitive->material != NULL) {
+                if (primitive->material->has_pbr_metallic_roughness) {
+                    rse_malloc(texture_data_offset, sizeof(size_t));
+                    rse_malloc(texture_data_size, sizeof(int));
+                    *texture_data_offset = primitive->material->pbr_metallic_roughness.base_color_texture.texture->image->buffer_view->offset;
+                    *texture_data_size = primitive->material->pbr_metallic_roughness.base_color_texture.texture->image->buffer_view->size;
+                }
+            }
+
+            for (attribute_index = 0; attribute_index < primitive->attributes_count; ++attribute_index) {
+                attribute = &primitive->attributes[attribute_index];
+
+                tmp_offset = attribute->data->buffer_view->offset;
+
+                switch (attribute->type) {
+                    case cgltf_attribute_type_position:
+                        rse_malloc(position_data_offset, sizeof(size_t));
+                        *position_data_offset = tmp_offset;
+                        data_count = attribute->data->count;
+                        break;
+                    case cgltf_attribute_type_color:
+                        rse_malloc(color_data_offset, sizeof(size_t));
+                        *color_data_offset = tmp_offset;
+                        break;
+                    case cgltf_attribute_type_texcoord:
+                        rse_malloc(texture_coord_data_offset, sizeof(size_t));
+                        *texture_coord_data_offset = tmp_offset;
+                        break;
+                    default:
+                        break;
+                }
+            }
+        }
+
+        if (position_data_offset == NULL) {
+            SDL_LogCritical(SDL_LOG_CATEGORY_GPU, "Failed to retrieve position data for mesh %s", file_name);
+            status = RSE_ERROR_INVALID_PARAM;
+
+            goto exit;
+        }
+
+        if (data_count == 0) {
+            SDL_LogCritical(SDL_LOG_CATEGORY_GPU, "Failure: data count for mesh is 0");
+            status = RSE_ERROR_INVALID_PARAM;
+
+            goto exit;
+        }
+
+        rse_malloc(vertices, sizeof(struct vertex_t) * data_count);
+        bin = (uint8_t*)data->bin;
+
+        for (data_index = 0U; data_index < data_count; ++data_index) {
+            rse_memcpy(vertices[data_index].pos,
+                       (bin + *position_data_offset + (sizeof(vec3) * data_index)),
+                       sizeof(vec3));
+            if (color_data_offset != NULL) {
+                rse_memcpy(vertices[data_index].color,
+                           (bin + *color_data_offset + (sizeof(vec3) * data_index)),
+                           sizeof(vec3));
+            } else {
+                vertices[data_index].color[0] = 1.0;
+                vertices[data_index].color[1] = 1.0;
+                vertices[data_index].color[2] = 1.0;
+            }
+
+            if (texture_coord_data_offset != NULL) {
+                rse_memcpy(vertices[data_index].tex_coords,
+                           (bin + *texture_coord_data_offset + (sizeof(vec2) * data_index)),
+                           sizeof(vec2));
+            }
+        }
+
+        if (texture_data_offset != NULL) {
+            rse_malloc(texture_pixel_buffer, *texture_data_size);
+            rse_memcpy(texture_pixel_buffer, (bin + *texture_data_offset), *texture_data_size);
+            STATUS_CHECK(texture_load_from_buffer(context, texture_pixel_buffer, *texture_data_size, texture_id));
+        }
+
+        rse_memcpy(indices, (bin + *indices_data_offset), (sizeof(uint16_t) * indices_count));
+
+        STATUS_CHECK(mesh_create(context, vertices, indices, data_count, indices_count, mesh_id));
+    }
+
+exit:
+    rse_free(position_data_offset);
+    rse_free(color_data_offset);
+    rse_free(texture_coord_data_offset);
+    rse_free(indices_data_offset);
+    rse_free(texture_data_size);
+    rse_free(texture_data_offset);
+    rse_free(texture_pixel_buffer);
+    rse_free(vertices);
+    rse_free(indices);
+    cgltf_free(data);
+
+    return status;
+}
+
 rse_err_t mesh_create_instance(struct graphics_context_t* context,
                                entity_t entity,
                                struct instance_data_t instance_data)

graphics/src/mesh_controller.h

@@ -41,6 +41,7 @@ rse_err_t mesh_create(struct graphics_context_t* context, struct vertex_t* verti
 rse_err_t mesh_create_instance(struct graphics_context_t* context, entity_t entity,
                           struct instance_data_t instance_data);
 
+rse_err_t mesh_create_from_file(struct graphics_context_t* context, const char* file_name, rse_id_t* mesh_id, rse_id_t* texture_id);
 /**
  * @brief Get the vertex count for mesh with mesh_id ID
  *

graphics/src/object_loader.c

@@ -0,0 +1,6 @@
+#include "utilities/commons.h"
+
+rse_err_t object_load_gltf(const char* file_path)
+{
+
+}

graphics/src/pipeline_builder.c

@@ -29,7 +29,7 @@ rse_err_t shader_create_module(struct graphics_context_t* context,
                                const char* shader_path,
                                const VkShaderStageFlagBits shader_stage)
 {
-    char* buffer;
+    unsigned char* buffer;
     size_t buffer_size;
     VkShaderModuleCreateInfo create_info = {0};
 
@@ -44,9 +44,9 @@ rse_err_t shader_create_module(struct graphics_context_t* context,
     }
 
     /* Read shader file */
-    file_read(shader_path, &buffer_size, NULL);
+    file_read_bytes(shader_path, &buffer_size, NULL);
     rse_malloc(buffer, buffer_size);
-    file_read(shader_path, &buffer_size, buffer);
+    file_read_bytes(shader_path, &buffer_size, buffer);
 
     create_info.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
     create_info.pNext = NULL;
@@ -205,8 +205,8 @@ rse_err_t pipeline_add_descriptor_sets(struct graphics_context_t* context,
     create_info.flags = 0U;
     create_info.setLayoutCount = 1;  // FIXME: Make sure we can enable more than one layout
     create_info.pSetLayouts = &context->descriptor_data.set_layouts[descriptor_set_id];
-    create_info.pushConstantRangeCount = 0U;
-    create_info.pPushConstantRanges = NULL;
+    create_info.pushConstantRangeCount = pipeline->push_constant_ranges.push_constant_ranges_count;
+    create_info.pPushConstantRanges = pipeline->push_constant_ranges.push_constant_ranges;
 
     if (VK_SUCCESS !=
         vkCreatePipelineLayout(context->vulkan_handles.device, &create_info, NULL, &pipeline->pipeline_layout)) {
@@ -341,6 +341,23 @@ rse_err_t pipeline_add_vertex_input_attribute(struct pipeline_t* pipeline,
     return RSE_ERROR_NO_ERROR;
 }
 
+rse_err_t pipeline_add_push_constants(struct pipeline_t* pipeline,
+                                       VkShaderStageFlagBits shader_stage,
+                                       uint32_t offset,
+                                       uint32_t size)
+{
+    pipeline->push_constant_ranges.push_constant_ranges[pipeline->push_constant_ranges.push_constant_ranges_count]
+        .stageFlags = shader_stage;
+    pipeline->push_constant_ranges.push_constant_ranges[pipeline->push_constant_ranges.push_constant_ranges_count]
+        .offset = offset;
+    pipeline->push_constant_ranges.push_constant_ranges[pipeline->push_constant_ranges.push_constant_ranges_count]
+        .size = size;
+
+    pipeline->push_constant_ranges.push_constant_ranges_count++;
+
+    return RSE_ERROR_NO_ERROR;
+}
+
 rse_err_t pipelines_build(struct graphics_context_t* context, struct pipeline_infos_t* pipelines_infos_list)
 {
     assert(NULL != context);

graphics/src/pipeline_builder.h

@@ -92,6 +92,18 @@ rse_err_t pipeline_add_dynamic_state(struct pipeline_t* pipeline, const VkDynami
 rse_err_t pipeline_add_descriptor_sets(struct graphics_context_t* context,
                                        struct pipeline_t* pipeline,
                                        uint32_t descriptor_set_id);
+
+/**
+ * @brief Add push constants to pipeline
+ *
+ * @return RSE_ERROR_NO_ERROR on success
+ *
+ */
+rse_err_t pipeline_add_push_constants(struct pipeline_t* pipeline,
+                                       VkShaderStageFlagBits shader_stage,
+                                       uint32_t offset,
+                                       uint32_t size);
+
 /**
  * @brief Build pipeline from added components. This function should be called after adding all necessary components.
  * After call, pipeline is ready to be used and all added components are cleared, ready for next pipeline to be built.

graphics/src/rse_graphics.c

@@ -5,9 +5,7 @@
 #include <SDL3/SDL_render.h>
 #include <cglm/util.h>
 #include <stdint.h>
-#include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
 #include <vulkan/vulkan_core.h>
 
 #include "descriptor_builder.h"
@@ -19,6 +17,7 @@
 #include "src/vulkan_buffers.h"
 #include "utilities/commons.h"
 #include "utilities/errors_common.h"
+#include "utilities/time_utils.h"
 #include "vulkan_base.h"
 #include "vulkan_commons.h"
 #include "vulkan_image.h"
@@ -29,15 +28,65 @@ struct rse_graphics_context_t
     struct graphics_context_t* context;
 };
 
+static void model_view_projection_update(struct graphics_context_t* context)
+{
+    vec3 eye = {0};
+    vec3 center = {0};
+    vec3 up = {0};
+    vec3 rotation_vec = {0.0f, 1.0f, 0.0f};
+    float fovy;
+    float z_near;
+    float z_far;
+    static float rotation = 0.0;
+
+    eye[2] = -4.0f;
+
+    up[1] = 1.0f;
+
+    fovy = glm_rad(45.0f);
+    z_near = 0.1f;
+    z_far = 20.0f;
+
+    glm_mat4_identity(context->mvp_data.model);
+
+    glm_rotate(context->mvp_data.model, rotation, rotation_vec);
+    glm_lookat(eye, center, up, context->mvp_data.view);
+    glm_perspective(
+        fovy,
+        context->swapchain_data.swapchain_extent.width / (float)context->swapchain_data.swapchain_extent.height,
+        z_near,
+        z_far,
+        context->mvp_data.proj);
+
+    rotation += time_get_dt() * glm_rad(120.0);
+}
+
 static rse_err_t render_static_mesh(struct graphics_context_t* context, uint32_t renderer_id)
 {
     VkCommandBuffer command_buffer = context->vulkan_handles.command_buffers[context->current_frame];
     VkDeviceSize offsets[] = {0};
+    uint32_t mvp_offset = 0;
+    uint32_t mvp_size = sizeof(struct mvp_data_t);
 
     (void)renderer_id;
+
+    vkCmdPushConstants(command_buffer,
+                       context->pipelines_data.pipeline_layouts[0],
+                       VK_SHADER_STAGE_VERTEX_BIT,
+                       mvp_offset,
+                       mvp_size,
+                       &context->mvp_data);
+    model_view_projection_update(context);
     vkCmdBindPipeline(command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, context->pipelines_data.pipelines[0]);
-    vkCmdBindIndexBuffer(command_buffer, context->render_targets[RENDER_TARGET_3D].index_buffer.buffer, 0, VK_INDEX_TYPE_UINT16);
-    vkCmdBindVertexBuffers(command_buffer, 0, 1, &context->render_targets[RENDER_TARGET_3D].vertex_buffer.buffer, offsets);
+    vkCmdBindIndexBuffer(command_buffer,
+                         context->render_targets[RENDER_TARGET_3D].index_buffer.buffer,
+                         0,
+                         VK_INDEX_TYPE_UINT16);
+    vkCmdBindVertexBuffers(command_buffer,
+                           0,
+                           1,
+                           &context->render_targets[RENDER_TARGET_3D].vertex_buffer.buffer,
+                           offsets);
     /* FIXME: Currently we can only bind one descriptor set */
     vkCmdBindDescriptorSets(command_buffer,
                             VK_PIPELINE_BIND_POINT_GRAPHICS,
@@ -57,100 +106,62 @@ static rse_err_t render_static_mesh(struct graphics_context_t* context, uint32_t
     return RSE_ERROR_NO_ERROR;
 }
 
-static void model_view_projection_update(struct graphics_context_t* context, const struct vulkan_buffer_t* buffer)
-{
-    struct uniform_buffer_object_t ubo = {0};
-    vec3 eye = {0};
-    vec3 center = {0};
-    vec3 up = {0};
-    vec3 rotation_vec = {1.0f, 0.0f, 0.0f};
-    float fovy;
-    float z_near;
-    float z_far;
-
-    eye[2] = -5.0f;
-
-    up[1] = 1.0f;
-
-    fovy = glm_rad(45.0f);
-    z_near = 0.1f;
-    z_far = 20.0f;
-
-    glm_mat4_identity(ubo.model);
-
-    glm_rotate(ubo.model, glm_rad(0.0f), rotation_vec);
-    glm_lookat(eye, center, up, ubo.view);
-    glm_perspective(
-        fovy,
-        context->swapchain_data.swapchain_extent.width / (float)context->swapchain_data.swapchain_extent.height,
-        z_near,
-        z_far,
-        ubo.proj);
-    memcpy(buffer->allocation_info.pMappedData, &ubo, sizeof(ubo));
-}
-
-rse_err_t rse_graphics_init(struct rse_graphics_context_t** context)
+rse_err_t rse_graphics_init(struct graphics_context_t* context)
 {
     rse_err_t status = RSE_ERROR_NO_ERROR;
-    struct rse_graphics_context_t* ctx_ptr = NULL;
 
-    if (*context != NULL) {
-        SDL_LogCritical(SDL_LOG_CATEGORY_GPU, "Graphics already initialized!");
-        return RSE_ERROR_ALREADY_INITIALIZED;
-    }
-
-    rse_malloc(*context, sizeof(struct rse_graphics_context_t));
-    ctx_ptr = *context;
-    rse_malloc(ctx_ptr->context, sizeof(struct graphics_context_t));
-    rse_memset(ctx_ptr->context, 0, sizeof(struct graphics_context_t));
-
-    STATUS_CHECK(window_init(&ctx_ptr->context->window_handle, &ctx_ptr->context->is_framebuffer_resized));
-    STATUS_CHECK(vulkan_init(ctx_ptr->context));
+    STATUS_CHECK(window_init(&context->window_handle, &context->is_framebuffer_resized));
+    STATUS_CHECK(vulkan_init(context));
 
     return status;
 }
 
-rse_err_t rse_graphics_test_function(struct rse_graphics_context_t* rse_context)
+#define TEXTURES_COUNT (3U)
+rse_err_t rse_graphics_test_function(struct graphics_context_t* context)
 {
     rse_err_t status = RSE_ERROR_NO_ERROR;
-    struct graphics_context_t* context = rse_context->context;
-    rse_id_t textures[2] = {0};
+    rse_id_t textures[TEXTURES_COUNT] = {0};
     struct pipeline_t pipeline;
     rse_id_t descriptor_set_handle = 0;
     struct descriptor_set_layout_bindings_t layout_bindings = {0};
     struct pipeline_infos_t pipeline_infos = {0};
-    struct vulkan_buffer_t model_view_projection_buffer = {0};
-    rse_id_t mesh_id_1, mesh_id_2 = 0;
-    rse_id_t font_id = 0;
+    rse_id_t mesh_id_1 = 0;
+    rse_id_t mesh_id_2 = 0;
+    rse_id_t avocado_id = 0;
+    // rse_id_t font_id = 0;
     rse_id_t static_mesh_renderer = 0U;
     rse_id_t vertex_shader_id, fragment_shader_id;
 
-    texture_load_from_file(context, "../../test_image.jpg", &textures[0]);
-    texture_load_from_file(context, "../../test_image_2.jpg", &textures[1]);
+    STATUS_CHECK(texture_load_from_file(context, "../../test_image.jpg", &textures[0]));
+    STATUS_CHECK(texture_load_from_file(context, "../../test_image_2.jpg", &textures[1]));
 
-    STATUS_CHECK(fonts_init());
-    STATUS_CHECK(fonts_load_from_file(context, "../../NotoSansMono-Regular.ttf", &font_id));
-    STATUS_CHECK(fonts_set_font_size(context, font_id, 16));
+    // STATUS_CHECK(fonts_init());
+    // STATUS_CHECK(fonts_load_from_file(context, "../../NotoSansMono-Regular.ttf", &font_id));
+    // STATUS_CHECK(fonts_set_font_size(context, font_id, 16));
 
     // FIXME: Temporary array of vertices, for testing purposes
-    struct vertex_t vertices[] = {{{-0.5f, 0.5f, 0.0f}, {1.0f, 1.0f, 1.0f}, {0.0f, 1.0f}},
+    struct vertex_t vertices[] = {
+        {{-0.5f, -0.5f, 0.0f}, {1.0f, 0.0f, 0.0f}, {0.0f, 0.0f}},
+        {{-0.5f, 0.5f, 0.0f}, {1.0f, 1.0f, 1.0f}, {0.0f, 1.0f}},
         {{0.5f, 0.5f, 0.0f}, {0.0f, 0.0f, 1.0f}, {1.0f, 1.0f}},
         {{0.5f, -0.5f, 0.0f}, {0.0f, 1.0f, 0.0f}, {1.0f, 0.0f}},
-                                  {{-0.5f, -0.5f, 0.0f}, {1.0f, 0.0f, 0.0f}, {0.0f, 0.0f}}};
+    };
 
-    struct vertex_t vertices2[] = {{{-0.5f, 0.5f, 0.0f}, {1.0f, 1.0f, 1.0f}, {0.0f, 1.0f}},
-                                   {{0.5f, 0.5f, 0.0f}, {0.0f, 0.0f, 1.0f}, {1.0f, 1.0f}},
-                                   {{0.5f, -0.5f, 0.0f}, {0.0f, 1.0f, 0.0f}, {1.0f, 0.0f}},
-                                   {{-0.5f, -0.5f, 0.0f}, {1.0f, 0.0f, 0.0f}, {0.0f, 0.0f}}};
+    struct vertex_t vertices_2[] = {
+        {{-0.7f, -0.7f, 0.0f}, {1.0f, 0.0f, 0.0f}, {0.0f, 0.0f}},
+        {{-0.7f, 0.7f, 0.0f}, {1.0f, 1.0f, 1.0f}, {0.0f, 1.0f}},
+        {{0.1f, 0.7f, 0.0f}, {0.0f, 0.0f, 1.0f}, {1.0f, 1.0f}},
+        {{0.1f, -0.7f, 0.0f}, {0.0f, 1.0f, 0.0f}, {1.0f, 0.0f}},
+    };
 
     // FIXME: Temporary array of vertices, for testing purposes
-    uint16_t indices[] = {0, 1, 2, 2, 3, 0};
+    uint16_t indices[] = {0, 1, 2, 2, 3, 0, 0, 3, 2,  2, 1, 0};
 
-    mesh_create(context, vertices, indices, 4, 6, &mesh_id_1);
+    STATUS_CHECK(mesh_create(context, vertices, indices, 4, 12, &mesh_id_1));
     if (RSE_ERROR_NO_ERROR !=
         mesh_create_instance(context,
                              mesh_id_1,
-                             (struct instance_data_t){{0.0f, 0.0f, 2.4f}, {0.0f, 0.0f, 0.0}, 1.0f, textures[1]})) {
+                             (struct instance_data_t){{0.0f, 1.0f, 0.0f}, {0.0f, 0.0f, 0.0}, 0.5f, textures[0]})) {
         exit(1);
     }
 
@@ -158,50 +169,60 @@ rse_err_t rse_graphics_test_function(struct rse_graphics_context_t* rse_context)
         mesh_create_instance(
             context,
             mesh_id_1,
-            (struct instance_data_t){{-0.5f, 0.0f, -1.0f}, {0.0f, 0.0f, glm_rad(10.0f)}, 1.0f, textures[0]})) {
+            (struct instance_data_t){{-0.5f, 0.0f, -1.0f}, {0.0f, 0.0f, glm_rad(10.0f)}, 0.5f, textures[1]})) {
         exit(1);
     }
 
-    mesh_create(context, vertices2, indices, 4, 6, &mesh_id_2);
-
+    STATUS_CHECK(mesh_create(context, vertices_2, indices, 4, 6, &mesh_id_2));
     if (RSE_ERROR_NO_ERROR !=
         mesh_create_instance(
             context,
             mesh_id_2,
-            (struct instance_data_t){{1.0f, 1.0f, 0.0f}, {0.0f, 0.0f, glm_rad(0.0f)}, 1.0f, textures[0]})) {
+            (struct instance_data_t){{0.5f, 0.0f, 1.0f}, {0.0f, 0.0f, glm_rad(0.0f)}, 0.5f, textures[1]})) {
         exit(1);
     }
 
-    buffer_create_uniform(context, &model_view_projection_buffer, sizeof(struct uniform_buffer_object_t));
-    model_view_projection_update(context, &model_view_projection_buffer);
-    buffers_update(context);
+    mesh_create_from_file(context, "../../Avocado.glb", &avocado_id, &textures[2]);
+    if (RSE_ERROR_NO_ERROR !=
+        mesh_create_instance(
+            context,
+            avocado_id,
+            (struct instance_data_t){{0.0f, 0.2f, 0.0f}, {0.0f, 0.0f, glm_rad(180.0f)}, 10.0f, textures[2]})) {
+        exit(1);
+    }
 
-    sampler_create(context, &context->vulkan_handles.sampler);
+    STATUS_CHECK(buffers_update(context));
 
-    descriptor_pool_add_type(context, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 2);
-    descriptor_pool_add_type(context, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 2);
-    descriptor_pool_initialize(context);
+    STATUS_CHECK(sampler_create(context, &context->vulkan_handles.sampler));
+
+    STATUS_CHECK(descriptor_pool_add_type(context, VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 1));
+    STATUS_CHECK(descriptor_pool_add_type(context, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, TEXTURES_COUNT));
+    STATUS_CHECK(descriptor_pool_initialize(context));
 
     /* Normal rendering */
-    descriptor_create_new_set(context, &descriptor_set_handle);
-    descriptor_add_layout(&layout_bindings, 0, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1, VK_SHADER_STAGE_VERTEX_BIT);
-    descriptor_add_layout(&layout_bindings, 1, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1, VK_SHADER_STAGE_VERTEX_BIT);
-    descriptor_add_layout(&layout_bindings, 2, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 2, VK_SHADER_STAGE_FRAGMENT_BIT);
-    descriptor_set_finish(context, &layout_bindings, descriptor_set_handle);
-    descriptor_build_sets(context);
+    STATUS_CHECK(descriptor_create_new_set(context, &descriptor_set_handle));
+    STATUS_CHECK(
+        descriptor_add_layout(&layout_bindings, 0, VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 1, VK_SHADER_STAGE_VERTEX_BIT));
+    STATUS_CHECK(descriptor_add_layout(&layout_bindings,
+                                       1,
+                                       VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
+                                       TEXTURES_COUNT,
+                                       VK_SHADER_STAGE_FRAGMENT_BIT));
+    STATUS_CHECK(descriptor_set_finish(context, &layout_bindings, descriptor_set_handle));
+    STATUS_CHECK(descriptor_build_sets(context));
 
-    descriptor_attach_buffer(context,
-                             descriptor_set_handle,
-                             &model_view_projection_buffer,
-                             0,
-                             VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER);
-    descriptor_attach_buffer(context,
+    STATUS_CHECK(descriptor_attach_buffer(context,
                                           descriptor_set_handle,
                                           &context->render_targets[RENDER_TARGET_3D].instance_buffer,
-                             1,
-                             VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER);
+                                          0,
+                                          VK_DESCRIPTOR_TYPE_STORAGE_BUFFER));
 
-    descriptor_attach_images(context, descriptor_set_handle, textures, 2, context->vulkan_handles.sampler, 2);
+    STATUS_CHECK(descriptor_attach_images(context,
+                                          descriptor_set_handle,
+                                          textures,
+                                          TEXTURES_COUNT,
+                                          context->vulkan_handles.sampler,
+                                          1));
 
     /* Initialize pipeline */
     pipeline_builder_init(&pipeline);
@@ -215,12 +236,18 @@ rse_err_t rse_graphics_test_function(struct rse_graphics_context_t* rse_context)
 
     pipeline_add_vertex_input_attribute(&pipeline, 0, 0, VK_FORMAT_R32G32B32_SFLOAT, offsetof(struct vertex_t, pos));
     pipeline_add_vertex_input_attribute(&pipeline, 0, 1, VK_FORMAT_R32G32B32_SFLOAT, offsetof(struct vertex_t, color));
-    pipeline_add_vertex_input_attribute(&pipeline, 0, 2, VK_FORMAT_R32G32_SFLOAT, offsetof(struct vertex_t, tex_coords));
+    pipeline_add_vertex_input_attribute(&pipeline,
+                                        0,
+                                        2,
+                                        VK_FORMAT_R32G32_SFLOAT,
+                                        offsetof(struct vertex_t, tex_coords));
 
     pipeline_add_dynamic_state(&pipeline, VK_DYNAMIC_STATE_VIEWPORT);
     pipeline_add_dynamic_state(&pipeline, VK_DYNAMIC_STATE_SCISSOR);
 
+    pipeline_add_push_constants(&pipeline, VK_SHADER_STAGE_VERTEX_BIT, 0, sizeof(struct mvp_data_t));
     pipeline_add_descriptor_sets(context, &pipeline, descriptor_set_handle);
+
     pipeline_add(context, &pipeline, &pipeline_infos);
 
     pipelines_build(context, &pipeline_infos);
@@ -232,21 +259,35 @@ rse_err_t rse_graphics_test_function(struct rse_graphics_context_t* rse_context)
     return RSE_ERROR_NO_ERROR;
 }
 
-int rse_graphics_run(void* arg)
+rse_err_t rse_graphics_run(struct graphics_context_t* context)
 {
     rse_err_t status = RSE_ERROR_NO_ERROR;
-    struct rse_graphics_context_t* rse_context = (struct rse_graphics_context_t*)arg;
-    struct graphics_context_t* context = rse_context->context;
 
     STATUS_CHECK(vulkan_run(context));
-    STATUS_CHECK(window_loop(context));
 
+    return status;
+}
+
+rse_err_t rse_graphics_main_loop(struct graphics_context_t* context)
+{
+    rse_err_t status = RSE_ERROR_NO_ERROR;
+
+    STATUS_CHECK(vulkan_draw_frame(context));
+
+    return status;
+}
+
+// rse_err_t rse_graphics_load_model(struct graphics_context_t* context, const char* model_path, rse_id_t* model_id)
+// {
+//     rse_err_t status = RSE_ERROR_NO_ERROR;
+//
+//     return status;
+// }
+
+void rse_graphics_deinit(struct graphics_context_t* context)
+{
     vulkan_deinit(context);
 
     window_terminate(context->window_handle);
     rse_free(context->debug_overlay.pixels);
-    rse_free(context);
-    rse_free(rse_context);
-
-    return status;
 }

graphics/src/vma_port.cpp

@@ -23,7 +23,7 @@
 #pragma GCC diagnostic ignored "-Wswitch"
 #pragma GCC diagnostic ignored "-Wparentheses"
 #endif
-#include "vma/vk_mem_alloc.h"
+#include "vk_mem_alloc.h"
 #ifdef __unix__
 #pragma GCC diagnostic pop
 #endif

graphics/src/vulkan_base.c

@@ -15,25 +15,23 @@
 #include <SDL3/SDL_log.h>
 #include <SDL3/SDL_main.h>
 #include <SDL3/SDL_vulkan.h>
-#include <vma/vk_mem_alloc.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <vk_mem_alloc.h>
 
+#include "pipeline_builder.h"
 #include "src/descriptor_builder.h"
 #include "src/graphics_context.h"
 #include "utilities/commons.h"
 #include "utilities/errors_common.h"
 #include "vulkan/vulkan_core.h"
-
-#include "vulkan_commons.h"
-#include "vulkan_commands.h"
 #include "vulkan_buffers.h"
+#include "vulkan_commands.h"
+#include "vulkan_commons.h"
 #include "vulkan_image.h"
 #include "vulkan_render_pass.h"
 #include "vulkan_swapchain.h"
-#include "pipeline_builder.h"
-
-#include <stddef.h>
-#include <stdlib.h>
-#include <string.h>
 
 #define APPLICATION_NAME "RedScarfEngine PoC"
 #define ENGINE_NAME "RedScarf Engine"
@@ -49,7 +47,8 @@
  */
 static VKAPI_ATTR VkBool32 VKAPI_CALL debug_callback(VkDebugUtilsMessageSeverityFlagBitsEXT message_severity,
                                                      VkDebugUtilsMessageTypeFlagsEXT message_type,
-                                             const VkDebugUtilsMessengerCallbackDataEXT* callback_data, void* user_data)
+                                                     const VkDebugUtilsMessengerCallbackDataEXT* callback_data,
+                                                     void* user_data)
 {
     (void)message_severity;
     (void)message_type;
@@ -80,7 +79,8 @@ static VKAPI_ATTR VkBool32 VKAPI_CALL debug_callback(VkDebugUtilsMessageSeverity
  * @param debug_messenger Debug messanger handle
  * @return VkResult VK_SUCCESS on success
  */
-static VkResult CreateDebugUtilsMessengerEXT(VkInstance instance, const VkDebugUtilsMessengerCreateInfoEXT* create_info,
+static VkResult CreateDebugUtilsMessengerEXT(VkInstance instance,
+                                             const VkDebugUtilsMessengerCreateInfoEXT* create_info,
                                              const VkAllocationCallbacks* allocator,
                                              VkDebugUtilsMessengerEXT* debug_messenger)
 {
@@ -108,10 +108,9 @@ static rse_err_t setup_debug_messenger(VkInstance instance, VkDebugUtilsMessenge
 
     create_info.sType = VK_STRUCTURE_TYPE_DEBUG_UTILS_MESSENGER_CREATE_INFO_EXT;
     create_info.pNext = NULL;
-    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.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;
@@ -134,7 +133,8 @@ static rse_err_t setup_debug_messenger(VkInstance instance, VkDebugUtilsMessenge
  * @param debug_messenger Debug messanger handle
  * @param allocator Memory allocator
  */
-static void DestroyDebugUtilsMessengerEXT(VkInstance instance, VkDebugUtilsMessengerEXT debug_messenger,
+static void DestroyDebugUtilsMessengerEXT(VkInstance instance,
+                                          VkDebugUtilsMessengerEXT debug_messenger,
                                           const VkAllocationCallbacks* allocator)
 {
     PFN_vkDestroyDebugUtilsMessengerEXT func =
@@ -211,14 +211,14 @@ static rse_err_t create_instance(VkInstance* instance)
 
     /* Check if selected layers are supported*/
     for (i = 0; i < enabled_instance_layers_count; ++i) {
-        for(j = 0; i < layersCount; ++j) {
-            if(strcmp(layer_properties[j].layerName, enabled_instance_layers_names[i]) == 0) {
+        for (j = 0; j < layersCount; ++j) {
+            if (strcmp(layer_properties[j].layerName, enabled_instance_layers_names[i]) == 0) {
                 supported = 1;
                 break;
             }
         }
-        if(supported == 0) {
-            SDL_LogCritical(SDL_LOG_CATEGORY_GPU, "Selected layer is not supported: %s", layer_properties[j].layerName);
+        if (supported == 0) {
+            SDL_LogCritical(SDL_LOG_CATEGORY_GPU, "Selected layer is not supported: %s", enabled_instance_layers_names[i]);
             return RSE_ERROR_INTERNAL_ERROR;
         }
         supported = 0;
@@ -226,14 +226,16 @@ static rse_err_t create_instance(VkInstance* instance)
 
     /* Check if selected extensions are supported*/
     for (i = 0; i < enabled_instance_extensions_count; ++i) {
-        for(j = 0; j < extensionCount; ++j) {
-            if(strcmp(extensions_properties[j].extensionName, enabled_instance_extensions_names[i]) == 0) {
+        for (j = 0; j < extensionCount; ++j) {
+            if (strcmp(extensions_properties[j].extensionName, enabled_instance_extensions_names[i]) == 0) {
                 supported = 1;
                 break;
             }
         }
-        if(supported == 0) {
-            SDL_LogCritical(SDL_LOG_CATEGORY_GPU, "Selected extension is not supported: %s", extensions_properties[j].extensionName);
+        if (supported == 0) {
+            SDL_LogCritical(SDL_LOG_CATEGORY_GPU,
+                            "Selected extension is not supported: %s",
+                            extensions_properties[j].extensionName);
             return RSE_ERROR_INTERNAL_ERROR;
         }
         supported = 0;
@@ -293,7 +295,8 @@ static rse_err_t pick_physical_device(VkInstance instance, VkPhysicalDevice* phy
 {
     uint32_t physical_device_count = 0U;
     VkPhysicalDevice* physical_devices = NULL;
-    VkPhysicalDeviceProperties device_properties = {0};;
+    VkPhysicalDeviceProperties device_properties = {0};
+    ;
     VkPhysicalDeviceFeatures device_features = {0};
 
     /* Get number of existing physical devices */
@@ -378,9 +381,12 @@ static rse_err_t create_device(struct graphics_context_t* context)
     }
 
     /* Get information about supported queue families */
-    vkGetPhysicalDeviceQueueFamilyProperties(context->vulkan_handles.physical_device, &queue_families_property_count, NULL);
+    vkGetPhysicalDeviceQueueFamilyProperties(context->vulkan_handles.physical_device,
+                                             &queue_families_property_count,
+                                             NULL);
     rse_malloc(queue_family_properties, sizeof(VkQueueFamilyProperties) * queue_families_property_count);
-    vkGetPhysicalDeviceQueueFamilyProperties(context->vulkan_handles.physical_device, &queue_families_property_count,
+    vkGetPhysicalDeviceQueueFamilyProperties(context->vulkan_handles.physical_device,
+                                             &queue_families_property_count,
                                              queue_family_properties);
 
     /* Get queue families that support graphics operations AND have most
@@ -401,7 +407,10 @@ static rse_err_t create_device(struct graphics_context_t* context)
 
             /* Check for family with surface support */
             VkBool32 presentSupport = VK_FALSE;
-            vkGetPhysicalDeviceSurfaceSupportKHR(context->vulkan_handles.physical_device, familyIdx, context->vulkan_handles.surface, &presentSupport);
+            vkGetPhysicalDeviceSurfaceSupportKHR(context->vulkan_handles.physical_device,
+                                                 familyIdx,
+                                                 context->vulkan_handles.surface,
+                                                 &presentSupport);
             if (presentSupport) {
                 presentation_familiy_idx = familyIdx;
                 presentation_familiy_found = true;
@@ -426,16 +435,17 @@ static rse_err_t create_device(struct graphics_context_t* context)
     context->queue_family_indices[QUEUE_FAMILY_INDEX_GRAPHICS] = graphics_family_idx;
     context->queue_family_indices[QUEUE_FAMILY_INDEX_PRESENTATION] = presentation_familiy_idx;
 
-    rse_malloc(graphics_familiy_queue_priorities, sizeof(float) * queue_family_properties[graphics_family_idx].queueCount);
+    rse_malloc(graphics_familiy_queue_priorities,
+               sizeof(float) * queue_family_properties[graphics_family_idx].queueCount);
 
     for (size_t i = 0; i < queue_family_properties[graphics_family_idx].queueCount; i++) {
         graphics_familiy_queue_priorities[i] = 1.0f;
     }
 
-    rse_malloc(presentation_familiy_queue_priorities, sizeof(float) * queue_family_properties[presentation_familiy_idx].queueCount);
+    rse_malloc(presentation_familiy_queue_priorities,
+               sizeof(float) * queue_family_properties[presentation_familiy_idx].queueCount);
     for (size_t i = 0; i < queue_family_properties[presentation_familiy_idx].queueCount; i++) {
-        presentation_familiy_queue_priorities[i] =
-            1.0f;
+        presentation_familiy_queue_priorities[i] = 1.0f;
     }
 
     device_queue_createinfos[0].sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
@@ -463,13 +473,19 @@ static rse_err_t create_device(struct graphics_context_t* context)
     device_create_info.ppEnabledExtensionNames = enabled_device_extensions_names;
     device_create_info.pEnabledFeatures = NULL;
 
-    if (VK_SUCCESS != vkCreateDevice(context->vulkan_handles.physical_device, &device_create_info, NULL, &context->vulkan_handles.device)) {
+    if (VK_SUCCESS != vkCreateDevice(context->vulkan_handles.physical_device,
+                                     &device_create_info,
+                                     NULL,
+                                     &context->vulkan_handles.device)) {
         SDL_LogCritical(SDL_LOG_CATEGORY_GPU, "Failed to create logical device");
         return RSE_ERROR_INTERNAL_ERROR;
     }
 
     vkGetDeviceQueue(context->vulkan_handles.device, graphics_family_idx, 0, &context->vulkan_handles.graphics_queue);
-    vkGetDeviceQueue(context->vulkan_handles.device, presentation_familiy_idx, 0, &context->vulkan_handles.present_queue);
+    vkGetDeviceQueue(context->vulkan_handles.device,
+                     presentation_familiy_idx,
+                     0,
+                     &context->vulkan_handles.present_queue);
 
     rse_free(presentation_familiy_queue_priorities);
     rse_free(graphics_familiy_queue_priorities);
@@ -505,7 +521,6 @@ static rse_err_t create_memory_allocator(struct graphics_context_t* context)
     return RSE_ERROR_NO_ERROR;
 }
 
-
 /**
  * @brief Create a Sync Objects
  *
@@ -522,9 +537,18 @@ static rse_err_t create_sync_objects(struct graphics_context_t* context)
     fenceInfo.flags = VK_FENCE_CREATE_SIGNALED_BIT;
 
     for (size_t i = 0; i < SWAP_BUFFER_COUNT; ++i) {
-        if (VK_SUCCESS != vkCreateSemaphore(context->vulkan_handles.device, &semaphore_info, NULL, &context->vulkan_handles.image_available_semaphores[i]) ||
-            VK_SUCCESS != vkCreateSemaphore(context->vulkan_handles.device, &semaphore_info, NULL, &context->vulkan_handles.render_finished_semaphores[i]) ||
-            VK_SUCCESS != vkCreateFence(context->vulkan_handles.device, &fenceInfo, NULL, &context->vulkan_handles.in_flight_fences[i])) {
+        if (VK_SUCCESS != vkCreateSemaphore(context->vulkan_handles.device,
+                                            &semaphore_info,
+                                            NULL,
+                                            &context->vulkan_handles.image_available_semaphores[i]) ||
+            VK_SUCCESS != vkCreateSemaphore(context->vulkan_handles.device,
+                                            &semaphore_info,
+                                            NULL,
+                                            &context->vulkan_handles.render_finished_semaphores[i]) ||
+            VK_SUCCESS != vkCreateFence(context->vulkan_handles.device,
+                                        &fenceInfo,
+                                        NULL,
+                                        &context->vulkan_handles.in_flight_fences[i])) {
             SDL_LogCritical(SDL_LOG_CATEGORY_GPU, "Failed to create sync objects.");
             return RSE_ERROR_INTERNAL_ERROR;
         }
@@ -533,14 +557,14 @@ static rse_err_t create_sync_objects(struct graphics_context_t* context)
     return RSE_ERROR_NO_ERROR;
 }
 
-
 rse_err_t vulkan_init(struct graphics_context_t* context)
 {
     rse_err_t status = RSE_ERROR_NO_ERROR;
 
     STATUS_CHECK(create_instance(&context->vulkan_handles.instance));
     STATUS_CHECK(setup_debug_messenger(context->vulkan_handles.instance, &context->vulkan_handles.debug_messenger));
-    STATUS_CHECK(create_surface(context->vulkan_handles.instance, context->window_handle, &context->vulkan_handles.surface));
+    STATUS_CHECK(
+        create_surface(context->vulkan_handles.instance, context->window_handle, &context->vulkan_handles.surface));
     STATUS_CHECK(pick_physical_device(context->vulkan_handles.instance, &context->vulkan_handles.physical_device));
     STATUS_CHECK(create_device(context));
     STATUS_CHECK(create_memory_allocator(context));
@@ -559,12 +583,10 @@ rse_err_t vulkan_run(struct graphics_context_t* context)
 
     STATUS_CHECK(create_sync_objects(context));
 
-    init_time();
-
     return status;
 }
 
-rse_err_t draw_frame(struct graphics_context_t* context)
+rse_err_t vulkan_draw_frame(struct graphics_context_t* context)
 {
     rse_err_t status = RSE_ERROR_NO_ERROR;
     uint32_t image_index = 0U;
@@ -576,14 +598,20 @@ rse_err_t draw_frame(struct graphics_context_t* context)
     VkPresentInfoKHR present_info = {0};
     VkSwapchainKHR swap_chains[1];
 
-    vkWaitForFences(context->vulkan_handles.device, 1, &context->vulkan_handles.in_flight_fences[context->current_frame], VK_TRUE, UINT64_MAX);
+    vkWaitForFences(context->vulkan_handles.device,
+                    1,
+                    &context->vulkan_handles.in_flight_fences[context->current_frame],
+                    VK_TRUE,
+                    UINT64_MAX);
 
     STATUS_CHECK(buffers_update(context));
 
-    update_time();
-
-    result = vkAcquireNextImageKHR(context->vulkan_handles.device, context->swapchain_data.swapchain, UINT64_MAX, context->vulkan_handles.image_available_semaphores[context->current_frame],
-                                            VK_NULL_HANDLE, &image_index);
+    result = vkAcquireNextImageKHR(context->vulkan_handles.device,
+                                   context->swapchain_data.swapchain,
+                                   UINT64_MAX,
+                                   context->vulkan_handles.image_available_semaphores[context->current_frame],
+                                   VK_NULL_HANDLE,
+                                   &image_index);
 
     if (result == VK_ERROR_OUT_OF_DATE_KHR) {
         recreate_swapchain(context);
@@ -612,11 +640,14 @@ rse_err_t draw_frame(struct graphics_context_t* context)
     submit_info.commandBufferCount = 1;
     submit_info.pCommandBuffers = &context->vulkan_handles.command_buffers[context->current_frame];
 
-    signal_semaphores[0] = context->vulkan_handles.render_finished_semaphores[context->current_frame];
+    signal_semaphores[0] = context->vulkan_handles.render_finished_semaphores[image_index];
     submit_info.signalSemaphoreCount = 1;
     submit_info.pSignalSemaphores = signal_semaphores;
 
-    if (vkQueueSubmit(context->vulkan_handles.graphics_queue, 1, &submit_info, context->vulkan_handles.in_flight_fences[context->current_frame]) != VK_SUCCESS) {
+    if (vkQueueSubmit(context->vulkan_handles.graphics_queue,
+                      1,
+                      &submit_info,
+                      context->vulkan_handles.in_flight_fences[context->current_frame]) != VK_SUCCESS) {
         SDL_LogCritical(SDL_LOG_CATEGORY_GPU, "Failed to submit draw command buffer!");
         return RSE_ERROR_INTERNAL_ERROR;
     }
@@ -624,7 +655,7 @@ rse_err_t draw_frame(struct graphics_context_t* context)
     present_info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
 
     present_info.waitSemaphoreCount = 1;
-    present_info.pWaitSemaphores = &context->vulkan_handles.render_finished_semaphores[context->current_frame];
+    present_info.pWaitSemaphores = &context->vulkan_handles.render_finished_semaphores[image_index];
 
     swap_chains[0] = context->swapchain_data.swapchain;
     present_info.swapchainCount = 1;
@@ -649,6 +680,7 @@ rse_err_t draw_frame(struct graphics_context_t* context)
 
 void vulkan_deinit(struct graphics_context_t* context)
 {
+    vkDeviceWaitIdle(context->vulkan_handles.device);
     destroy_buffers(context);
     for (size_t i = 0; i < SWAP_BUFFER_COUNT; ++i) {
         vkDestroySemaphore(context->vulkan_handles.device, context->vulkan_handles.image_available_semaphores[i], NULL);

graphics/src/vulkan_base.h

@@ -46,6 +46,6 @@ void vulkan_deinit(struct graphics_context_t* context);
  * @param context Graphics context
  * @return rse_err_t
  */
-rse_err_t draw_frame(struct graphics_context_t* context);
+rse_err_t vulkan_draw_frame(struct graphics_context_t* context);
 
 #endif /* GRAPHICS_VULKANBASE_H */

graphics/src/vulkan_buffers.c

@@ -119,7 +119,12 @@ static rse_err_t create_instance_buffers(struct graphics_context_t* context)
     buffer_size = sizeof(struct instance_data_t) * MAX_INSTANCE_NUMBER;
 
     STATUS_CHECK(
-        buffer_create_uniform(context, &context->render_targets[RENDER_TARGET_3D].instance_buffer, buffer_size));
+        create_buffer(context,
+                      buffer_size,
+                      VK_BUFFER_USAGE_STORAGE_BUFFER_BIT,
+                      VMA_MEMORY_USAGE_AUTO_PREFER_HOST,
+                      VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT | VMA_ALLOCATION_CREATE_MAPPED_BIT,
+                      &context->render_targets[RENDER_TARGET_3D].instance_buffer));
     /* TODO: Move creation to somewhere else? */
     STATUS_CHECK(create_buffer(context,
                                CMD_BUFFER_SIZE,
@@ -205,8 +210,11 @@ rse_err_t add_vertices(struct graphics_context_t* context,
                        size_t vertices_count,
                        const struct vertex_t* vertices,
                        size_t indices_count,
-                       const uint16_t* indices)
+                       uint16_t* indices)
 {
+    // static uint16_t last_index = 0U;
+    // uint16_t max_index = 0U;
+    // size_t idx = 0U;
     rse_err_t status = RSE_ERROR_NO_ERROR;
     struct vulkan_buffer_t staging_buffer;
     size_t vertices_size = sizeof(vertices[0]) * vertices_count;
@@ -230,6 +238,7 @@ rse_err_t add_vertices(struct graphics_context_t* context,
     copy_buffer(context, staging_buffer.buffer, vertex_buffer->buffer, vertices_size, vertex_buffer->allocated_size);
     vertex_buffer->allocated_size += vertices_size;
 
+
     /* Fill staging buffer with index data */
     memcpy(staging_buffer.allocation_info.pMappedData, indices, indices_size);
     copy_buffer(context, staging_buffer.buffer, index_buffer->buffer, indices_size, index_buffer->allocated_size);
@@ -269,6 +278,7 @@ rse_err_t buffers_update(struct graphics_context_t* context)
         sizeof(VkDrawIndexedIndirectCommand) * context->mesh_data.mesh_count;
     struct vulkan_buffer_t staging_buffer;
     struct mesh_t* mesh = NULL;
+    uint32_t indices_count = 0U;
 
     rse_malloc(draw_indirect_commands_buffer, draw_indirect_commands_buffer_size);
     for (iter = 0U; iter < context->mesh_data.mesh_count; ++iter) {
@@ -290,13 +300,14 @@ rse_err_t buffers_update(struct graphics_context_t* context)
             draw_indirect_command->firstInstance = 0;
             draw_indirect_command->vertexOffset = 0;
         } else {
-            draw_indirect_command->firstIndex = context->mesh_data.mesh_bucket[iter - 1].index_count;
+            draw_indirect_command->firstIndex = indices_count;
             draw_indirect_command->firstInstance = draw_indirect_commands_buffer[iter - 1].firstInstance +
                                                    draw_indirect_commands_buffer[iter - 1].instanceCount;
-            draw_indirect_command->vertexOffset = (context->mesh_data.mesh_bucket[iter - 1].vertex_count);
+            draw_indirect_command->vertexOffset = (context->mesh_data.mesh_bucket[iter - 1].vertex_count + draw_indirect_commands_buffer[iter-1].vertexOffset);
         }
         draw_indirect_command->indexCount = mesh->index_count;
         draw_indirect_command->instanceCount = mesh->instances_count;
+        indices_count += mesh->index_count;
     }
 
     /* Copy Draw indirect commands into buffer */
@@ -435,10 +446,12 @@ void destroy_buffers(struct graphics_context_t* context)
     destroy_buffer(context, &context->render_targets[RENDER_TARGET_3D].vertex_buffer);
     destroy_buffer(context, &context->render_targets[RENDER_TARGET_3D].index_buffer);
     destroy_buffer(context, &context->render_targets[RENDER_TARGET_3D].draw_indirect_command_buffer);
+    destroy_buffer(context, &context->render_targets[RENDER_TARGET_3D].instance_buffer);
 
-    for (iter = 0U; iter < context->uniform_buffers.vulkan_buffers_count; ++iter)
-    {
-        vmaDestroyBuffer(context->vulkan_handles.allocator, context->uniform_buffers.vulkan_buffers[iter].buffer, context->uniform_buffers.vulkan_buffers[iter].allocation);
+    for (iter = 0U; iter < context->uniform_buffers.vulkan_buffers_count; ++iter) {
+        vmaDestroyBuffer(context->vulkan_handles.allocator,
+                         context->uniform_buffers.vulkan_buffers[iter].buffer,
+                         context->uniform_buffers.vulkan_buffers[iter].allocation);
     }
 
     context->uniform_buffers.vulkan_buffers_count = 0;

graphics/src/vulkan_buffers.h

@@ -2,7 +2,7 @@
 #define VULKAN_BUFFERS_H
 
 #include <stdint.h>
-#include <vma/vk_mem_alloc.h>
+#include <vk_mem_alloc.h>
 
 #include "graphics_context.h"
 #include "utilities/commons.h"
@@ -36,7 +36,7 @@ rse_err_t buffer_create_uniform(struct graphics_context_t* context, struct vulka
  * @return rse_err_t RSE_ERROR_NO_ERROR on success
  */
 rse_err_t add_vertices(struct graphics_context_t* context, uint16_t mesh_id, size_t vertices_count,
-                       const struct vertex_t* vertices, size_t indices_count, const uint16_t* indices);
+                       const struct vertex_t* vertices, size_t indices_count, uint16_t* indices);
 
 /**
  * @brief Add instance data to vulkan buffers

graphics/src/vulkan_commands.h

@@ -12,7 +12,7 @@
 #ifndef VULKAN_COMMANDS_H
 #define VULKAN_COMMANDS_H
 
-#include <vma/vk_mem_alloc.h>
+#include <vk_mem_alloc.h>
 #include <vulkan/vulkan_core.h>
 
 #include "utilities/commons.h"

graphics/src/vulkan_commons.c

@@ -1,24 +0,0 @@
-#include "vulkan_commons.h"
-
-#include <time.h>
-
-time_t g_last_frame_time;
-time_t g_this_frame_time;
-float g_float_delta_time;
-
-void init_time(void)
-{
-    time(&g_last_frame_time);
-}
-
-void update_time(void)
-{
-    g_last_frame_time = g_this_frame_time;
-    time(&g_this_frame_time);
-    g_float_delta_time = (float)difftime(g_this_frame_time, g_last_frame_time);
-}
-
-float get_time_diff(void)
-{
-    return g_float_delta_time;
-}

graphics/src/vulkan_commons.h

@@ -14,7 +14,7 @@
 
 #include <cglm/types.h>
 #include <vulkan/vulkan.h>
-#include <vma/vk_mem_alloc.h>
+#include <vk_mem_alloc.h>
 #include <cglm/cglm.h>
 
 #include <stdalign.h>
@@ -44,7 +44,7 @@ struct vulkan_buffer_t
     VmaAllocationInfo allocation_info;
 };
 
-struct uniform_buffer_object_t
+struct mvp_data_t
 {
     alignas(16) mat4 model;
     alignas(16) mat4 view;
@@ -58,8 +58,4 @@ struct instance_data_t {
     alignas(4) uint32_t texture_id;
 };
 
-void init_time(void);
-void update_time(void);
-float get_time_diff(void);
-
 #endif /* VULKAN_GLOBAL_H */

graphics/src/vulkan_image.c

@@ -3,6 +3,7 @@
 #include <SDL3/SDL_log.h>
 #include <stdint.h>
 
+#include "SDL3/SDL_video.h"
 #include "src/graphics_context.h"
 #include "utilities/commons.h"
 #include "utilities/errors_common.h"
@@ -15,6 +16,9 @@
 #include <stdlib.h>
 #include <string.h>
 
+#define STB_IMAGE_IMPLEMENTATION
+#include "stb_image.h"
+
 #define IMAGE_TAKEN 1U
 #define IMAGE_FREE 0U
 
@@ -168,16 +172,14 @@ rse_err_t create_color_resource(struct graphics_context_t* context)
 {
     rse_err_t status = RSE_ERROR_NO_ERROR;
     VkFormat color_format = IMAGE_FORMAT;
-    VkSurfaceCapabilitiesKHR physical_device_surface_capabilities;
+    VkExtent2D extent = {0};
 
-    vkGetPhysicalDeviceSurfaceCapabilitiesKHR(context->vulkan_handles.physical_device,
-                                              context->vulkan_handles.surface,
-                                              &physical_device_surface_capabilities);
+    STATUS_CHECK(image_get_extent(context, &extent));
 
     STATUS_CHECK(create_image(context,
                               &context->color_image,
-                              physical_device_surface_capabilities.currentExtent.width,
-                              physical_device_surface_capabilities.currentExtent.height,
+                              extent.width,
+                              extent.height,
                               color_format,
                               VK_SAMPLE_COUNT_8_BIT,
                               VK_IMAGE_USAGE_TRANSIENT_ATTACHMENT_BIT | VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT,
@@ -191,17 +193,16 @@ rse_err_t create_depth_resources(struct graphics_context_t* context)
 {
     rse_err_t status = RSE_ERROR_NO_ERROR;
     VkFormat depth_format = {0};
-    VkSurfaceCapabilitiesKHR physical_device_surface_capabilities;
+    VkExtent2D extent = {0};
+
+    STATUS_CHECK(image_get_extent(context, &extent));
 
     STATUS_CHECK(find_depth_format(context, &depth_format));
-    vkGetPhysicalDeviceSurfaceCapabilitiesKHR(context->vulkan_handles.physical_device,
-                                              context->vulkan_handles.surface,
-                                              &physical_device_surface_capabilities);
 
     STATUS_CHECK(create_image(context,
                               &context->depth_image,
-                              physical_device_surface_capabilities.currentExtent.width,
-                              physical_device_surface_capabilities.currentExtent.height,
+                              extent.width,
+                              extent.height,
                               depth_format,
                               VK_SAMPLE_COUNT_8_BIT,
                               VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT,
@@ -407,6 +408,33 @@ rse_err_t init_vulkan_images(struct graphics_context_t* context)
     return status;
 }
 
+rse_err_t image_get_extent(struct graphics_context_t* context, VkExtent2D* extent)
+{
+    VkSurfaceCapabilitiesKHR physical_device_surface_capabilities;
+    int w = 0;
+    int h = 0;
+
+    if (extent == NULL) {
+        SDL_LogCritical(SDL_LOG_CATEGORY_GPU, "Provided extent pointer is NULL");
+
+        return RSE_ERROR_NULL_POINTER;
+    }
+
+    vkGetPhysicalDeviceSurfaceCapabilitiesKHR(context->vulkan_handles.physical_device,
+                                              context->vulkan_handles.surface,
+                                              &physical_device_surface_capabilities);
+
+    if (physical_device_surface_capabilities.currentExtent.width != UINT32_MAX) {
+        *extent = physical_device_surface_capabilities.currentExtent;
+    } else {
+        SDL_GetWindowSize(context->window_handle, &w, &h);
+        extent->width = w;
+        extent->height = h;
+    }
+
+    return RSE_ERROR_NO_ERROR;
+}
+
 rse_err_t texture_update_image(struct graphics_context_t* context,
                                const unsigned char* pixels,
                                int width,
@@ -490,20 +518,19 @@ rse_err_t load_texture_from_bitmat(struct graphics_context_t* context,
     return status;
 }
 
-rse_err_t texture_load_from_file(struct graphics_context_t* context, const char* file_path, rse_id_t* texture_id)
+rse_err_t texture_load_from_buffer(struct graphics_context_t* context, const unsigned char* data_buffer, size_t buffer_size, rse_id_t* texture_id)
 {
-    rse_err_t status = RSE_ERROR_NO_ERROR;
     int width = 0;
     int height = 0;
-    size_t buffer_size = 0U;
+    int channels = 0;
     unsigned char* pixel_buffer = NULL;
+    rse_err_t status = RSE_ERROR_NO_ERROR;
 
-    STATUS_CHECK(file_load_pixels(file_path, NULL, &buffer_size, &width, &height));
-    rse_malloc(pixel_buffer, buffer_size);
-    if (file_load_pixels(file_path, pixel_buffer, &buffer_size, &width, &height) != RSE_ERROR_NO_ERROR) {
-        status = RSE_ERROR_INTERNAL_ERROR;
+    pixel_buffer = stbi_load_from_memory(data_buffer, (int)buffer_size, &width, &height, &channels, STBI_rgb_alpha);
+    if (pixel_buffer == NULL) {
+        SDL_LogCritical(SDL_LOG_CATEGORY_GPU, "Failed to load image");
 
-        goto mem_free;
+        return RSE_ERROR_INTERNAL_ERROR;
     }
 
     if (load_texture_from_bitmat(context, pixel_buffer, width, height, texture_id, VK_FORMAT_R8G8B8A8_SRGB) != RSE_ERROR_NO_ERROR) {
@@ -513,8 +540,26 @@ rse_err_t texture_load_from_file(struct graphics_context_t* context, const char*
     }
 
 mem_free:
+    stbi_image_free(pixel_buffer);
 
-    rse_free(pixel_buffer);
+    return status;
+}
+
+rse_err_t texture_load_from_file(struct graphics_context_t* context, const char* file_path, rse_id_t* texture_id)
+{
+    size_t buffer_size = 0U;
+    unsigned char* data_buffer = NULL;
+    rse_err_t status = RSE_ERROR_NO_ERROR;
+
+    STATUS_CHECK(file_read_bytes(file_path, &buffer_size, NULL));
+    rse_malloc(data_buffer, buffer_size);
+    STATUS_CHECK(file_read_bytes(file_path, &buffer_size, data_buffer));
+
+    if (texture_load_from_buffer(context, data_buffer, buffer_size, texture_id) != RSE_ERROR_NO_ERROR) {
+        status = RSE_ERROR_INTERNAL_ERROR;
+    }
+
+    rse_free(data_buffer);
 
     return status;
 }

graphics/src/vulkan_image.h

@@ -29,6 +29,8 @@
  */
 rse_err_t init_vulkan_images(struct graphics_context_t* context);
 
+rse_err_t image_get_extent(struct graphics_context_t* context, VkExtent2D* extent);
+
 /**
  * @brief Loads image from file, for later to be used as a texture
  *
@@ -40,6 +42,7 @@ rse_err_t init_vulkan_images(struct graphics_context_t* context);
 rse_err_t load_texture_from_bitmat(struct graphics_context_t* context, const unsigned char* pixel_buffer, int width,
                                    int height, rse_id_t* texture_id, VkFormat color_format);
 
+rse_err_t texture_load_from_buffer(struct graphics_context_t* context, const unsigned char* data_buffer, size_t buffer_size, rse_id_t* texture_id);
 /**
  * @brief Loads image from file, for later to be used as a texture
  *

graphics/src/vulkan_swapchain.c

@@ -21,14 +21,18 @@ static rse_err_t create_swapchain(struct graphics_context_t* context)
 {
     VkSwapchainCreateInfoKHR create_info;
     VkSurfaceCapabilitiesKHR physical_device_surface_capabilities;
+    rse_err_t status = RSE_ERROR_NO_ERROR;
     VkBool32 surfaceSupported;
+    VkExtent2D extent = {0};
 
     vkGetPhysicalDeviceSurfaceCapabilitiesKHR(context->vulkan_handles.physical_device,
                                               context->vulkan_handles.surface,
                                               &physical_device_surface_capabilities);
 
+    STATUS_CHECK(image_get_extent(context, &extent));
+
     /* Store extent in global variable, for later use */
-    context->swapchain_data.swapchain_extent = physical_device_surface_capabilities.currentExtent;
+    context->swapchain_data.swapchain_extent = extent;
 
     /* Check if device supports surface for presentation */
     vkGetPhysicalDeviceSurfaceSupportKHR(context->vulkan_handles.physical_device,
@@ -52,7 +56,7 @@ static rse_err_t create_swapchain(struct graphics_context_t* context)
     create_info.pQueueFamilyIndices = context->queue_family_indices;
     create_info.preTransform = physical_device_surface_capabilities.currentTransform;
     create_info.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
-    create_info.presentMode = VK_PRESENT_MODE_FIFO_KHR;
+    create_info.presentMode = VK_PRESENT_MODE_IMMEDIATE_KHR;
     create_info.clipped = VK_TRUE;
     create_info.oldSwapchain = VK_NULL_HANDLE;
 

graphics/src/window.c

@@ -18,46 +18,25 @@
 #include <stdint.h>
 #include <stdio.h>
 
+#include "SDL3/SDL_log.h"
 #include "utilities/commons.h"
 #include "utilities/errors_common.h"
-#include "vulkan/vulkan_core.h"
-#include "vulkan_base.h"
 
 rse_err_t window_init(SDL_Window** window_handle, bool* is_framebuffer_resized)
 {
-    SDL_Init(SDL_INIT_VIDEO);  // TODO: Move to initial phase of RSE initialization
-
-    (void)is_framebuffer_resized;; // TODO: Actually use this parameter?
+    (void)is_framebuffer_resized;
+    // TODO: Actually use this parameter?
 
     *window_handle = SDL_CreateWindow("RedScarfEngine", 1024, 768, SDL_WINDOW_VULKAN);
 
     if (NULL == *window_handle) {
-        SDL_LogCritical(SDL_LOG_CATEGORY_GPU, "Window context creation failed");
+        SDL_LogCritical(SDL_LOG_CATEGORY_GPU, "Window context creation failed. Reason: %s", SDL_GetError());
         return RSE_ERROR_INTERNAL_ERROR;
     }
 
     return RSE_ERROR_NO_ERROR;
 }
 
-rse_err_t window_loop(struct graphics_context_t* context)
-{
-    uint8_t done = 0;
-    SDL_Event event;
-
-    while (0 == done) {
-        while (SDL_PollEvent(&event)) {
-            if (SDL_EVENT_QUIT == event.type) {
-                done = 1;
-            }
-        }
-
-        draw_frame(context);
-    }
-
-    vkDeviceWaitIdle(context->vulkan_handles.device);
-    return RSE_ERROR_NO_ERROR;
-}
-
 void window_terminate(SDL_Window* window_handle)
 {
     SDL_DestroyWindow(window_handle);

graphics/src/window.h

@@ -32,14 +32,6 @@
  */
 rse_err_t window_init(SDL_Window **window_handle, bool *is_framebuffer_resized);
 
-/**
- * @brief Main window loop
- *
- * @param context Graphics context
- * @return rse_err_t WINDOW_SUCCESS or error code
- */
-rse_err_t window_loop(struct graphics_context_t* context);
-
 /**
  * @brief Closes window and terminates GLFW
  *

meson.build

@@ -6,7 +6,11 @@ project('RedScarfEngine',
           'werror=true'
           ])
 
+add_project_arguments('-DWAYLAND=1', language : 'c')
+
 subdir('utilities')
 subdir('graphics')
+subdir('events')
+
 subdir('red_scarf_engine')
 

red_scarf_engine/CMakeLists.txt

@@ -1,10 +0,0 @@
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Werror")
-
-add_executable(${PROJECT_NAME} src/main.c)
-
-target_include_directories(${PROJECT_NAME} PRIVATE
-    ${CMAKE_SOURCE_DIR})
-
-target_link_libraries(${PROJECT_NAME} PRIVATE
-    graphics
-    utilities)

red_scarf_engine/meson.build

@@ -1,4 +1,5 @@
 red_scarf_engine_srcs = [
+  'src/red_scarf_engine.c',
   'src/main.c'
   ]
 
@@ -13,6 +14,10 @@ executable(
     ],
   dependencies : [
                   sdl3_dep,
+                  rse_graphics_lib_dep,
+                  ],
+  link_with: [
+            rse_events_lib,
+            rse_utilities_lib,
             ],
-  link_with: rse_graphics_lib,
   )

red_scarf_engine/red_scarf_engine.h

@@ -0,0 +1,22 @@
+/**
+ * @file red_scarf_engine.h
+ * @author Piotr Krygier (piotrkrygier@everyonencancode.xyz)
+ * @brief Red Scarf Engine main entry point
+ * @version 0.1
+ * @date 2026-03-03
+ *
+ * @copyright Copyright (c) 2026
+ *
+ */
+
+#ifndef RED_SCARF_ENGINE_H_
+#define RED_SCARF_ENGINE_H_
+
+#include "utilities/commons.h"
+
+typedef struct rse_context_t* rse_context;
+
+rse_err_t rse_init(rse_context* context);
+rse_err_t rse_run(rse_context context);
+
+#endif /* RED_SCARF_ENGINE_H_ */

red_scarf_engine/src/main.c

@@ -1,31 +1,16 @@
-#include <SDL3/SDL_init.h>
-#include <SDL3/SDL_log.h>
-#include "graphics/rse_graphics.h"
+#include "red_scarf_engine.h"
 #include "utilities/errors_common.h"
-#include "SDL3/SDL_thread.h"
-
 
 int main(int argc, char** argv)
 {
     rse_err_t status = RSE_ERROR_NO_ERROR;
-    struct rse_graphics_context_t* context = NULL;
-    SDL_Thread* graphics_task = NULL;
+    rse_context context;
+
     (void)argc;
     (void)argv;
 
-    SDL_SetLogPriorities(SDL_LOG_PRIORITY_VERBOSE);
-
-    STATUS_CHECK(rse_graphics_init(&context));
-    STATUS_CHECK(rse_graphics_test_function(context));
-
-    graphics_task = SDL_CreateThread(rse_graphics_run, "graphics_task", (void*) context);
-
-    if (NULL == graphics_task) {
-        SDL_LogCritical(SDL_LOG_CATEGORY_GPU, "Failed to create graphics task");
-        exit(1);
-    }
-
-    SDL_WaitThread(graphics_task, NULL);
+    STATUS_CHECK(rse_init(&context));
+    STATUS_CHECK(rse_run(context));
 
     return 0;
 }

red_scarf_engine/src/red_scarf_engine.c

@@ -0,0 +1,71 @@
+#include "red_scarf_engine.h"
+#include "graphics/rse_graphics.h"
+#include "utilities/commons.h"
+#include "utilities/errors_common.h"
+#include "utilities/time_utils.h"
+#include "events/rse_events_manager.h"
+
+struct rse_context_t {
+    struct graphics_context_t graphics_context;
+    struct events_context_t events_context;
+};
+
+static void fps_print(double* start_time)
+{
+    static uint32_t frame_counts = 0U;
+
+    double now = time_get_sec_from_start();
+
+    frame_counts++;
+    if ((now - *start_time) > 1.0) {
+        printf("\rFPS: %u", frame_counts);
+        fflush(stdout);
+        frame_counts = 0;
+        *start_time += 1.0;
+    }
+}
+
+rse_err_t rse_init(rse_context* context)
+{
+    rse_err_t status = RSE_ERROR_NO_ERROR;
+    struct rse_context_t* rse_context = NULL;
+
+    rse_malloc(*context, sizeof(struct rse_context_t));
+
+    rse_context = *context;
+
+    SDL_Init(SDL_INIT_VIDEO);
+    SDL_SetLogPriorities(SDL_LOG_PRIORITY_VERBOSE);
+
+    STATUS_CHECK(time_init());
+    STATUS_CHECK(rse_events_init(&rse_context->events_context));
+    STATUS_CHECK(rse_graphics_init(&rse_context->graphics_context));
+
+    return RSE_ERROR_NO_ERROR;
+}
+
+rse_err_t rse_run(rse_context context)
+{
+    rse_err_t status = RSE_ERROR_NO_ERROR;
+    double start_time;
+
+    start_time = time_get_sec_from_start();
+
+    STATUS_CHECK(rse_graphics_test_function(&context->graphics_context));
+
+    STATUS_CHECK(rse_graphics_run(&context->graphics_context));
+    while(true) {
+        time_update();
+        rse_events_main_loop(&context->events_context);
+        if (context->events_context.should_stop == EVENT_SHOULD_STOP_ENGINE_TRUE) {
+            break;
+        }
+        rse_graphics_main_loop(&context->graphics_context);
+        fps_print(&start_time);
+    }
+
+    rse_graphics_deinit(&context->graphics_context);
+    rse_free(context);
+
+    return status;
+}

subprojects/cglm.wrap

@@ -0,0 +1,10 @@
+[wrap-file]
+directory = cglm-0.9.6
+source_url = https://github.com/recp/cglm/archive/refs/tags/v0.9.6.tar.gz
+source_filename = cglm-0.9.6.tar.gz
+source_hash = be5e7d384561eb0fca59724a92b7fb44bf03e588a7eae5123a7d796002928184
+source_fallback_url = https://github.com/mesonbuild/wrapdb/releases/download/cglm_0.9.6-1/cglm-0.9.6.tar.gz
+wrapdb_version = 0.9.6-1
+
+[provide]
+cglm = cglm_dep

subprojects/packagefiles/stb/meson.build

@@ -0,0 +1,7 @@
+project('stb', 'c')
+
+stb_inc = include_directories('.')
+
+stb_dep = declare_dependency(
+    include_directories: stb_inc,
+)

subprojects/packagefiles/vulkan_headers/meson.build

@@ -0,0 +1,15 @@
+project(
+  'vulkan-headers',
+  'c',
+  license: 'Apache-2.0',
+  version: '1.4.353',
+  meson_version: '>=0.56.0',
+)
+
+vulkan_api_xml = files('registry/vk.xml')
+
+vulkan_headers_dep = declare_dependency(
+  include_directories: include_directories('include'),
+)
+
+meson.override_dependency('VulkanHeaders', vulkan_headers_dep)

subprojects/stb.wrap

@@ -0,0 +1,5 @@
+[wrap-git]
+url = https://github.com/nothings/stb.git
+revision = HEAD
+depth = 1
+patch_directory = stb/

subprojects/vulkan-headers.wrap

@@ -0,0 +1,9 @@
+[wrap-file]
+directory = Vulkan-Headers-1.4.353
+source_url = https://github.com/KhronosGroup/Vulkan-Headers/archive/v1.4.353.tar.gz
+source_filename = vulkan-headers-1.4.353.tar.gz
+source_hash = aead572dd86def896eddac84cb31acb4ede28e3ac1ab97439d6ddd1b5a14d38e
+patch_directory = vulkan_headers/
+
+[provide]
+dependency_names = VulkanHeaders

subprojects/vulkan-memory-allocator.wrap

@@ -0,0 +1,14 @@
+[wrap-file]
+directory = VulkanMemoryAllocator-3.3.0
+source_url = https://github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator/archive/refs/tags/v3.3.0.tar.gz
+source_filename = VulkanMemoryAllocator-3.3.0.tar.gz
+source_hash = c4f6bbe6b5a45c2eb610ca9d231158e313086d5b1a40c9922cb42b597419b14e
+source_fallback_url = https://wrapdb.mesonbuild.com/v2/vulkan-memory-allocator_3.3.0-1/get_source/VulkanMemoryAllocator-3.3.0.tar.gz
+patch_filename = vulkan-memory-allocator_3.3.0-1_patch.zip
+patch_url = https://wrapdb.mesonbuild.com/v2/vulkan-memory-allocator_3.3.0-1/get_patch
+patch_fallback_url = https://github.com/mesonbuild/wrapdb/releases/download/vulkan-memory-allocator_3.3.0-1/vulkan-memory-allocator_3.3.0-1_patch.zip
+patch_hash = 85f3c1c82f3d1938fa295c80b06fc1c5c001f939f009b566c336a941d5d2d8b5
+wrapdb_version = 3.3.0-1
+
+[provide]
+dependency_names = VulkanMemoryAllocator

utilities/commons.h

@@ -22,13 +22,13 @@
  */
 #ifndef RSE_TEST
 #define rse_malloc(ptr, size)                                                       \
-    ptr = malloc(size);                                                             \
+    ptr = calloc(1, size);                                                             \
     if (ptr == NULL) {                                                              \
         SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION, "Memory allocation failure"); \
         exit(1);                                                                    \
     }
 
-#define rse_free(ptr) free(ptr);
+#define rse_free(ptr) if (ptr != NULL) free(ptr);
 
 #define rse_memcpy(dst, src, size) memcpy(dst, src, size);
 #define rse_memset(ptr, value, size) memset(ptr, value, size);

utilities/file_utils.h

@@ -3,6 +3,7 @@
 
 #include <stddef.h>
 #include "commons.h"
+#include "cgltf.h"
 
 #define MAX_PATH_LENGTH (4096U)
 
@@ -14,13 +15,13 @@
  * @param bytes_count Returned bytes count
  * @param buffer Returned filled buffer
  */
-rse_err_t file_read(const char* file_path, size_t* bytes_count, char* buffer);
+rse_err_t file_read_bytes(const char* file_path, size_t* bytes_count, unsigned char* buffer);
 
 rse_err_t file_write(const char* file_name, size_t bytes_count, char* buffer);
 
-rse_err_t file_load_pixels(const char* file_name, unsigned char* buffer, size_t* buffer_size, int* width, int* height);
-
 rse_err_t file_append_full_path(char* file_path, size_t max_buffer_size);
 
+rse_err_t file_load_gltf(const char* file_name, cgltf_data** data);
+
 #endif /* FILE_UTILS_H */
 

utilities/meson.build

@@ -1,13 +1,15 @@
 rse_utilities_srcs = [
-  'src/file_utils.c'
+  'src/file_utils.c',
+  'src/time_utils.c'
   ]
 
 cc = meson.get_compiler('c')
 
 sdl3_dep = dependency('sdl3',
                       version : '>=3.4.0')
-stb_dep = dependency('stb',
-                      version : '>=2.30.0')
+stb = dependency('stb',
+          fallback: ['stb', 'stb_dep'])
+
 m_dep = cc.find_library('m')
 
 rse_utilities_lib = shared_library(
@@ -16,7 +18,7 @@ rse_utilities_lib = shared_library(
   include_directories : ['.'],
   dependencies : [
                   sdl3_dep,
-                  stb_dep,
+                  stb,
                   m_dep,
                   ],
   install : true

utilities/src/file_utils.c

@@ -1,5 +1,10 @@
 #include "file_utils.h"
 
+#define CGLTF_IMPLEMENTATION
+#include "cgltf.h"
+
+#include <stddef.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -8,9 +13,6 @@
 #include "commons.h"
 #include "errors_common.h"
 
-#define STB_IMAGE_IMPLEMENTATION
-#include "stb/stb_image.h"
-
 #ifdef __linux__
 #include <limits.h>
 #include <unistd.h>
@@ -113,70 +115,7 @@ rse_err_t file_append_full_path(char* file_path, size_t max_buffer_size)
     return ret;
 }
 
-rse_err_t file_load_pixels(const char* file_name, unsigned char* buffer, size_t* buffer_size, int* width, int* height)
-{
-    int channels = 0;
-    stbi_uc* pixel_buffer = NULL;
-    size_t image_buffer_size = 0U;
-    rse_err_t ret = RSE_ERROR_NO_ERROR;
-    char real_path[MAX_PATH_LENGTH] = {0};
-
-    if (buffer_size == NULL) {
-        SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION, "Provided NULL buffer_size");
-
-        return RSE_ERROR_INVALID_PARAM;
-    }
-
-    if (width == NULL) {
-        SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION, "Provided NULL width");
-
-        return RSE_ERROR_INVALID_PARAM;
-    }
-
-    if (height == NULL) {
-        SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION, "Provided NULL height");
-
-        return RSE_ERROR_INVALID_PARAM;
-    }
-
-    strncpy(real_path, file_name, MAX_PATH_LENGTH);
-    if ((ret = file_append_full_path(real_path, MAX_PATH_LENGTH)) != RSE_ERROR_NO_ERROR) {
-        return ret;
-    }
-
-    pixel_buffer = stbi_load(real_path, width, height, &channels, STBI_rgb_alpha);
-
-    if (pixel_buffer == NULL) {
-        SDL_LogCritical(SDL_LOG_CATEGORY_GPU, "Failed to load texture from file: %s", file_name);
-        return RSE_ERROR_INTERNAL_ERROR;
-    }
-
-    image_buffer_size = *width * *height * 4; // TODO: "4" is very hardcoded value. Change this
-
-    if ((buffer != NULL) && (image_buffer_size > *buffer_size)) {
-        SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION,
-                        "Provided buffer is to small to hold pixel data. %ld vs %ld",
-                        *buffer_size,
-                        image_buffer_size);
-        ret = RSE_ERROR_INTERNAL_ERROR;
-
-        goto image_free;
-    }
-
-    *buffer_size = image_buffer_size;
-
-    if (buffer != NULL) {
-        memset(buffer, 0, *buffer_size);
-        memcpy(buffer, pixel_buffer, *buffer_size);
-    }
-
-image_free:
-    stbi_image_free(pixel_buffer);
-
-    return ret;
-}
-
-rse_err_t file_read(const char* file_name, size_t* bytes_count, char* buffer)
+rse_err_t file_read_bytes(const char* file_name, size_t* bytes_count, unsigned char* buffer)
 {
     rse_err_t ret = RSE_ERROR_NO_ERROR;
     FILE* file = NULL;
@@ -193,7 +132,7 @@ rse_err_t file_read(const char* file_name, size_t* bytes_count, char* buffer)
         SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION, "Failed to open file for read: %s", real_path);
         ret = RSE_ERROR_INTERNAL_ERROR;
 
-        goto file_close;
+        return ret;
     }
 
     fseek(file, 0, SEEK_END);
@@ -238,5 +177,25 @@ rse_err_t file_write(const char* file_name, size_t bytes_count, char* buffer)
     fwrite(buffer, bytes_count, 1, file);
     fclose(file);
 
-    return RSE_ERROR_NO_ERROR;
+    return ret;
+}
+
+rse_err_t file_load_gltf(const char* file_name, cgltf_data** data)
+{
+    char real_path[MAX_PATH_LENGTH] = {0};
+    rse_err_t ret = RSE_ERROR_NO_ERROR;
+    cgltf_options options = {0};
+
+    strncpy(real_path, file_name, MAX_PATH_LENGTH);
+    if ((ret = file_append_full_path(real_path, MAX_PATH_LENGTH)) != RSE_ERROR_NO_ERROR) {
+        return ret;
+    }
+
+    if (cgltf_parse_file(&options, real_path, data) != cgltf_result_success) {
+        SDL_LogCritical(SDL_LOG_CATEGORY_APPLICATION, "Failed to parse GLTF data");
+
+        return RSE_ERROR_INTERNAL_ERROR;
+    }
+
+    return ret;
 }

utilities/src/time_utils.c

@@ -0,0 +1,33 @@
+#include "time_utils.h"
+#include <stdint.h>
+#include "SDL3/SDL_timer.h"
+#include "commons.h"
+#include "errors_common.h"
+
+#define NS_TO_S(time) (time/1000000000)
+double g_last_time = 0.0;
+
+rse_err_t time_init(void)
+{
+    g_last_time = NS_TO_S((double)SDL_GetTicksNS());
+
+    return RSE_ERROR_NO_ERROR;
+}
+
+double time_get_sec_from_start(void)
+{
+    return NS_TO_S((double)SDL_GetTicksNS());
+}
+
+void time_update(void)
+{
+    g_last_time = NS_TO_S((double)SDL_GetTicksNS());
+}
+
+double time_get_dt(void)
+{
+    float time = NS_TO_S((double)SDL_GetTicksNS());
+    float dt = time - g_last_time;
+
+    return dt;
+}

utilities/time_utils.h

@@ -0,0 +1,24 @@
+/**
+ * @file file_utils.h
+ * @author Piotr Krygier (everyonecancode@gmail.com)
+ * @brief Common functionality for all modules
+ * @version 0.1
+ * @date 2026-02-11
+ *
+ * @copyright Copyright (c) 2023
+ *
+ */
+
+#ifndef TIME_UTILS_H_
+#define TIME_UTILS_H_
+
+#include "commons.h"
+
+rse_err_t time_init(void);
+void time_update(void);
+
+double time_get_sec_from_start(void);
+
+double time_get_dt(void);
+
+#endif // !TIME_UTILS_H_