Added MapIterator and started moving towards rendering objects by iterating through a list of mappings in the material to update descriptors

src/main.c

@@ -207,9 +207,74 @@ void map_destroy(Map map) {
   free(map.bucket_usage);
 }
 
+typedef struct MapIteratorStruct {
+  uint32_t  count;
+  uint32_t* keys;
+  void**    vals;
+} MapIterator;
+
+MapIterator map_iterator_create(Map map) {
+  MapIterator iterator = {
+    .keys  = 0,
+    .vals  = 0,
+    .count = 0,
+  };
+
+  uint32_t count = 0;
+  for(uint32_t i = 0; i < map.buckets_count; i++) {
+    count += map.bucket_usage[i];
+  }
+
+  uint32_t* keys = malloc(sizeof(uint32_t)*count);
+  if(keys == 0) {
+    return iterator;
+  }
+
+  void** vals = malloc(sizeof(void*)*count);
+  if(vals == 0) {
+    free(keys);
+    return iterator;
+  }
+
+  uint32_t idx = 0;
+  for(uint32_t i = 0; i < map.buckets_count; i++) {
+    for(uint32_t j = 0; j < map.bucket_usage[i]; j++) {
+      keys[idx] = map.buckets[i][j].key;
+      vals[idx] = map.buckets[i][j].value;
+      idx += 1;
+    }
+  }
+
+  iterator.keys = keys;
+  iterator.vals = vals;
+  iterator.count = count;
+
+  return iterator;
+}
+
+void map_iterator_free(MapIterator iterator) {
+  if(iterator.count > 0) {
+    free(iterator.keys);
+    free(iterator.vals);
+  }
+}
+
+typedef struct PositionStruct {
+  vec4   position;
+  versor rotation;
+} Position;
+
+typedef struct AttributeMappingStruct {
+  uint32_t attribute_id; // Which attribute to map
+  uint32_t mapping_type; // What function to use to map it
+  uint32_t binding; // Which index to use in the ATTRIBUTE_ID_DESTRO
+} AttributeMapping;
+
 #define ATTRIBUTE_ID_MESH            0x00000001
 #define ATTRIBUTE_ID_MATERIAL        0x00000002
-#define ATTRIBUTE_ID_DESCRIPTOR 0x00000003
+#define ATTRIBUTE_ID_DESCRIPTORS     0x00000003
+#define ATTRIBUTE_ID_DESCRIPTOR_SETS 0x00000004
+#define ATTRIBUTE_ID_POSITION        0x00000005
 
 typedef struct ObjectStruct {
   Map      attributes;
@@ -1751,7 +1816,7 @@ void command_draw_object(Material material, Object object, uint32_t frame_num, V
   vkCmdBindIndexBuffer(command_buffer, mesh->index_buffer.buffer, 0, VK_INDEX_TYPE_UINT16);
 
   if(material.mesh_set_layout != VK_NULL_HANDLE) {
-    MaybeValue maybe_descriptors = map_lookup(object.attributes, ATTRIBUTE_ID_DESCRIPTOR);
+    MaybeValue maybe_descriptors = map_lookup(object.attributes, ATTRIBUTE_ID_DESCRIPTOR_SETS);
     if(maybe_descriptors.has_value == false) {
       return;
     }
@@ -1937,7 +2002,7 @@ Object create_object() {
   return ret;
 }
 
-Object create_renderable(Mesh* mesh, Material* material) {
+Object create_renderable(Mesh* mesh, Material* material, VkDescriptorSet* descriptor_sets) {
   Object zero = {
     .attributes = {
       .buckets = 0,
@@ -1965,6 +2030,12 @@ Object create_renderable(Mesh* mesh, Material* material) {
     return zero;
   }
 
+  result = map_add(&attributes, ATTRIBUTE_ID_DESCRIPTOR_SETS, descriptor_sets);
+  if(result == false) {
+    map_destroy(attributes);
+    return zero;
+  }
+
   Object ret = {
     .attributes = attributes,
   };
@@ -2576,7 +2647,7 @@ VulkanContext* init_vulkan(GLFWwindow* window, uint32_t max_frames_in_flight) {
     context->triangle_mesh = triangle_mesh;
   }
 
-  Object triangle_object = create_renderable(&context->triangle_mesh, &context->simple_mesh_material);
+  Object triangle_object = create_renderable(&context->triangle_mesh, &context->simple_mesh_material, 0);
   if(triangle_object.attributes.buckets == 0) {
     fprintf(stderr, "failed to create renderable triangle object\n");
     return 0;
@@ -2600,14 +2671,6 @@ VulkanContext* init_vulkan(GLFWwindow* window, uint32_t max_frames_in_flight) {
     context->triangle_mesh_textured = triangle_mesh_textured;
   }
 
-  Object triangle_object_textured = create_renderable(&context->triangle_mesh_textured, &context->texture_mesh_material);
-  if(triangle_object_textured.attributes.buckets == 0) {
-    fprintf(stderr, "failed to create renderable textured triangle object\n");
-    return 0;
-  } else {
-    context->triangle_object_textured = triangle_object_textured;
-  }
-
   VkDescriptorPoolSize TODO_sizes[] = {
     {
       .type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
@@ -2658,9 +2721,12 @@ VulkanContext* init_vulkan(GLFWwindow* window, uint32_t max_frames_in_flight) {
     return 0;
   }
 
-  bool add_result = map_add(&context->triangle_object_textured.attributes, ATTRIBUTE_ID_DESCRIPTOR, TODO_sets);
+  Object triangle_object_textured = create_renderable(&context->triangle_mesh_textured, &context->texture_mesh_material, TODO_sets);
-  if(add_result == false) {
+  if(triangle_object_textured.attributes.buckets == 0) {
-    fprintf(stderr, "failed to add texture to renderable triangle object\n");
+    fprintf(stderr, "failed to create renderable textured triangle object\n");
+    return 0;
+  } else {
+    context->triangle_object_textured = triangle_object_textured;
   }
 
   VkExtent2D texture_size = {
@@ -2853,7 +2919,7 @@ void key_callback(GLFWwindow* window, int key, int scancode, int action, int mod
 vec3 world_position = {0.0f, 0.0f, 0.0f};
 versor world_rotation = {-1.0f, 0.0f, 0.0f, 0.0f};
 
-VkResult update_scene_ubo(void** buffers, uint32_t frame_index, vec3 world_position, versor world_rotation, float aspect_ratio, float time_delta) {
+VkResult update_scene_descriptor(void** buffers, uint32_t frame_index, vec3 world_position, versor world_rotation, float aspect_ratio, float time_delta) {
   vec3 movement_sum = {0.0f, 0.0f, 0.0f};
 
   if(key_flags.forward) {
@@ -2865,37 +2931,37 @@ VkResult update_scene_ubo(void** buffers, uint32_t frame_index, vec3 world_posit
   }
 
   if(key_flags.left) {
-    movement_sum[0] -= 1 * time_delta;
+    movement_sum[0] += 1 * time_delta;
   }
 
   if(key_flags.right) {
-    movement_sum[0] += 1 * time_delta;
+    movement_sum[0] -= 1 * time_delta;
   }
 
   if(key_flags.up) {
-    movement_sum[1] -= 1 * time_delta;
+    movement_sum[1] += 1 * time_delta;
   }
 
   if(key_flags.down) {
-    movement_sum[1] += 1 * time_delta;
+    movement_sum[1] -= 1 * time_delta;
   }
 
 
   vec3 eular_rotation = {0.0f, 0.0f, 0.0f};
   if(key_flags.turn_right) {
-    eular_rotation[0] += 1 * time_delta;
+    eular_rotation[0] -= 1 * time_delta;
   }
 
   if(key_flags.turn_left) {
-    eular_rotation[0] -= 1 * time_delta;
+    eular_rotation[0] += 1 * time_delta;
   }
 
   if(key_flags.turn_up) {
-    eular_rotation[1] -= 1 * time_delta;
+    eular_rotation[1] += 1 * time_delta;
   }
 
   if(key_flags.turn_down) {
-    eular_rotation[1] += 1 * time_delta;
+    eular_rotation[1] -= 1 * time_delta;
   }
 
   if(key_flags.roll_right) {
@@ -2932,7 +2998,7 @@ VkResult update_scene_ubo(void** buffers, uint32_t frame_index, vec3 world_posit
 
   struct SceneUBO ubo = {};
 
-  glm_perspective(90.0f, aspect_ratio, 0.1, 100, ubo.proj);
+  glm_perspective(100.0f, aspect_ratio, 0.01, 100, ubo.proj);
   glm_quat_look(world_position, world_rotation, ubo.view);
 
   memcpy(buffers[frame_index], (void*)&ubo, sizeof(ubo));
@@ -2941,7 +3007,7 @@ VkResult update_scene_ubo(void** buffers, uint32_t frame_index, vec3 world_posit
 }
 
 VkResult draw_frame(VulkanContext* context) {
-  update_scene_ubo(context->scene_ubo_ptrs, context->current_frame, world_position, world_rotation, (float)context->swapchain_extent.width/(float)context->swapchain_extent.height, 0.01);
+  update_scene_descriptor(context->scene_ubo_ptrs, context->current_frame, world_position, world_rotation, (float)context->swapchain_extent.width/(float)context->swapchain_extent.height, 0.01);
 
   VkResult result;
   result = vkWaitForFences(context->device, 1, &context->in_flight_fences[context->current_frame], VK_TRUE, UINT64_MAX);