Added more movement

shader_src/basic.vert

@@ -5,12 +5,12 @@ layout(binding = 0) uniform UniformBufferObject {
   mat4 proj;
 } ubo;
 
-layout(location = 0) in vec2 inPosition;
+layout(location = 0) in vec3 inPosition;
 layout(location = 1) in vec3 inColor;
 
 layout(location = 0) out vec3 fragColor;
 
 void main() {
-  gl_Position = ubo.proj * ubo.view * vec4(inPosition, 0.0, 1.0);
+  gl_Position = ubo.proj * ubo.view * vec4(inPosition, 1.0);
   fragColor = inColor;
 }

src/main.c

@@ -10,6 +10,7 @@
 #include <cglm/types.h>
 #include <cglm/mat4.h>
 #include <cglm/affine.h>
+#include <cglm/cam.h>
 #include <stdio.h>
 #include <string.h>
 
@@ -111,7 +112,7 @@ typedef struct VulkanContextStruct {
 } VulkanContext;
 
 struct Vertex{
-  vec2 pos;
+  vec3 pos;
   vec3 color;
 };
 
@@ -121,14 +122,18 @@ struct SceneUBO {
 };
 
 const struct Vertex vertices[] = {
-  {.pos = {-0.5f, -0.5f}, .color = {1.0f, 0.0f, 0.0f}},
-  {.pos = { 0.5f, -0.5f}, .color = {0.0f, 1.0f, 0.0f}},
-  {.pos = { 0.5f,  0.5f}, .color = {0.0f, 0.0f, 1.0f}},
-  {.pos = {-0.5f,  0.5f}, .color = {1.0f, 1.0f, 1.0f}},
+  {.pos = {-0.5f, -0.5f, 0.5f}, .color = {1.0f, 0.0f, 0.0f}},
+  {.pos = { 0.5f, -0.5f, 0.5f}, .color = {0.0f, 1.0f, 0.0f}},
+  {.pos = { 0.5f,  0.5f, 0.5f}, .color = {0.0f, 0.0f, 1.0f}},
+  {.pos = {-0.5f,  0.5f, 0.5f}, .color = {1.0f, 1.0f, 1.0f}},
 };
 
+//const uint16_t indices[] = {
+//  0, 1, 2, 2, 3, 0,
+//};
+//
 const uint16_t indices[] = {
-  0, 1, 2, 2, 3, 0,
+  2, 1, 0, 0, 3, 2,
 };
 
 const char * validation_layers[] = {
@@ -170,7 +175,7 @@ VkVertexInputAttributeDescription vertex_attributes[2];
 VkVertexInputAttributeDescription* vertex_attribute_descriptions() {
   vertex_attributes[0].binding = 0;
   vertex_attributes[0].location = 0;
-  vertex_attributes[0].format = VK_FORMAT_R32G32_SFLOAT;
+  vertex_attributes[0].format = VK_FORMAT_R32G32B32_SFLOAT;
   vertex_attributes[0].offset = offsetof(struct Vertex, pos);
 
   vertex_attributes[1].binding = 0;
@@ -570,50 +575,47 @@ VkDevice create_logical_device(VkPhysicalDevice physical_device, QueueIndices qu
   return device;
 }
 
-struct MaybeSwapchainDetails {
-  bool valid;
-  SwapchainDetails details;
-};
-
-struct MaybeSwapchainDetails get_swapchain_details(VkPhysicalDevice physical_device, VkSurfaceKHR surface) {
-  struct MaybeSwapchainDetails ret = {};
-  ret.valid = false;
-  ret.details.formats = 0;
-  ret.details.present_modes = 0;
+SwapchainDetails get_swapchain_details(VkPhysicalDevice physical_device, VkSurfaceKHR surface) {
+  SwapchainDetails details = {};
+  details.formats = 0;
+  details.present_modes = 0;
 
   VkResult result;
 
-  result = vkGetPhysicalDeviceSurfaceCapabilitiesKHR(physical_device, surface, &ret.details.capabilities);
+  result = vkGetPhysicalDeviceSurfaceCapabilitiesKHR(physical_device, surface, &details.capabilities);
   if(result != VK_SUCCESS) {
-    return ret;
+    return details;
   }
 
-  result = vkGetPhysicalDeviceSurfaceFormatsKHR(physical_device, surface, &ret.details.formats_count, 0);
+  result = vkGetPhysicalDeviceSurfaceFormatsKHR(physical_device, surface, &details.formats_count, 0);
   if(result != VK_SUCCESS) {
-    return ret;
+    return details;
   }
-  ret.details.formats = malloc(sizeof(VkSurfaceFormatKHR)*ret.details.formats_count);
-  result = vkGetPhysicalDeviceSurfaceFormatsKHR(physical_device, surface, &ret.details.formats_count, ret.details.formats);
+  details.formats = malloc(sizeof(VkSurfaceFormatKHR)*details.formats_count);
+  result = vkGetPhysicalDeviceSurfaceFormatsKHR(physical_device, surface, &details.formats_count, details.formats);
   if(result != VK_SUCCESS) {
-    free(ret.details.formats);
-    return ret;
+    free(details.formats);
+    details.formats = 0;
+    return details;
   }
 
-  result = vkGetPhysicalDeviceSurfacePresentModesKHR(physical_device, surface, &ret.details.present_modes_count, 0);
+  result = vkGetPhysicalDeviceSurfacePresentModesKHR(physical_device, surface, &details.present_modes_count, 0);
   if(result != VK_SUCCESS) {
-    free(ret.details.formats);
-    return ret;
+    free(details.formats);
+    details.formats = 0;
+    return details;
   }
-  ret.details.present_modes = malloc(sizeof(VkPresentModeKHR)*ret.details.present_modes_count);
-  result = vkGetPhysicalDeviceSurfacePresentModesKHR(physical_device, surface, &ret.details.present_modes_count, ret.details.present_modes);
+  details.present_modes = malloc(sizeof(VkPresentModeKHR)*details.present_modes_count);
+  result = vkGetPhysicalDeviceSurfacePresentModesKHR(physical_device, surface, &details.present_modes_count, details.present_modes);
   if(result != VK_SUCCESS) {
-    free(ret.details.formats);
-    free(ret.details.present_modes);
-    return ret;
+    free(details.formats);
+    free(details.present_modes);
+    details.formats = 0;
+    details.present_modes = 0;
+    return details;
   }
 
-  ret.valid = true;
-  return ret;
+  return details;
 }
 
 VkSurfaceFormatKHR choose_swapchain_format(SwapchainDetails swapchain_details) {
@@ -1441,12 +1443,12 @@ VulkanContext* init_vulkan(GLFWwindow* window, uint32_t max_frames_in_flight) {
   vkGetDeviceQueue(device, context->queue_indices.present_family, context->queue_indices.present_index, &context->queues.present);
   vkGetDeviceQueue(device, context->queue_indices.transfer_family, context->queue_indices.transfer_index, &context->queues.transfer);
 
-  struct MaybeSwapchainDetails maybe_details = get_swapchain_details(context->physical_device, context->surface);
-  if(maybe_details.valid == false) {
+  SwapchainDetails swapchain_details = get_swapchain_details(context->physical_device, context->surface);
+  if(swapchain_details.formats == 0) {
     fprintf(stderr, "failed to create vulkan logical device\n");
     return 0;
   } else {
-    context->swapchain_details = maybe_details.details;
+    context->swapchain_details = swapchain_details;
   }
 
   context->swapchain_format = choose_swapchain_format(context->swapchain_details);
@@ -1654,10 +1656,114 @@ VulkanContext* init_vulkan(GLFWwindow* window, uint32_t max_frames_in_flight) {
   return context;
 }
 
+vec3 world_position = {0.0f, 0.0f, 0.0f};
+float rotation = 0.0f;
+struct {
+  bool forward: 1;
+  bool backward: 1;
+  bool left: 1;
+  bool right: 1;
+  bool turn_left: 1;
+  bool turn_right: 1;
+} key_flags = {
+  .forward = false,
+  .backward = false,
+  .left = false,
+  .right = false,
+};
+
+void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) {
+  (void)scancode;
+  (void)window;
+  (void)mods;
+
+  switch(key) {
+  case GLFW_KEY_W:
+    if(action == GLFW_PRESS) {
+      key_flags.forward = true;
+    } else if(action == GLFW_RELEASE) {
+      key_flags.forward = false;
+    }
+    break;
+
+  case GLFW_KEY_A:
+    if(action == GLFW_PRESS) {
+      key_flags.left = true;
+    } else if(action == GLFW_RELEASE) {
+      key_flags.left = false;
+    }
+    break;
+
+  case GLFW_KEY_S:
+    if(action == GLFW_PRESS) {
+      key_flags.backward = true;
+    } else if(action == GLFW_RELEASE) {
+      key_flags.backward = false;
+    }
+    break;
+
+  case GLFW_KEY_D:
+    if(action == GLFW_PRESS) {
+      key_flags.right = true;
+    } else if(action == GLFW_RELEASE) {
+      key_flags.right = false;
+    }
+    break;
+
+  case GLFW_KEY_RIGHT:
+    if(action == GLFW_PRESS) {
+      key_flags.turn_right = true;
+    } else if(action == GLFW_RELEASE) {
+      key_flags.turn_right = false;
+    }
+    break;
+
+  case GLFW_KEY_LEFT:
+    if(action == GLFW_PRESS) {
+      key_flags.turn_left = true;
+    } else if(action == GLFW_RELEASE) {
+      key_flags.turn_left = false;
+    }
+    break;
+  }
+}
+
 VkResult update_ubo(void** buffers, uint32_t frame_index) {
+  if(key_flags.forward) {
+    world_position[2] += 0.01;
+  }
+
+  if(key_flags.backward) {
+    world_position[2] -= 0.01;
+  }
+
+  if(key_flags.left) {
+    world_position[0] -= 0.01;
+  }
+
+  if(key_flags.right) {
+    world_position[0] += 0.01;
+  }
+
+  if(key_flags.turn_right) {
+    rotation += 0.01;
+  }
+
+  if(key_flags.turn_left) {
+    rotation -= 0.01;
+  }
+
   struct SceneUBO ubo = {};
-  glm_mat4_identity(ubo.proj);
-  glm_mat4_identity(ubo.view);
+  glm_perspective(30.0f, 800.0/600.0, 0.1, 1, ubo.proj);
+  vec3 forward = {0.0f, 0.0f, 1.0f};
+  vec3 up = {0.0f, 1.0f, 0.0f};
+
+  vec3 dir;
+  mat4 rot;
+  glm_rotate_make(rot, rotation, up);
+  glm_mat4_mulv3(rot, forward, 1.0f, dir);
+
+  glm_look(world_position, dir, up, ubo.view);
 
   memcpy(buffers[frame_index], (void*)&ubo, sizeof(ubo));
 
@@ -1728,6 +1834,7 @@ void main_loop(GLFWwindow* window, VulkanContext* context) {
   context->current_frame = 0;
   while(!glfwWindowShouldClose(window)) {
     glfwPollEvents();
+
     draw_frame(context);
     context->current_frame += 1;
     if(context->current_frame >= context->max_frames_in_flight) {
@@ -1782,6 +1889,7 @@ int main() {
     return 2;
   }
 
+  glfwSetKeyCallback(window, key_callback);
   main_loop(window, context);
 
   cleanup(window, context);