WIP: started the code to use a swapchain and aquire swapchain images

[vkrt] / src / vk.c

diff --git a/src/vk.c b/src/vk.c
index d280e00..4e3aa1c 100644 (file)
--- a/src/vk.c
+++ b/src/vk.c
@@ -8,8 +8,10 @@
 /* static variables */
 static VkViewport viewport;
 static VkRect2D scissor;
+static bool enable_layers = true;
 
 /* static functions */
+
 static VkSampleCountFlagBits
 get_num_samples(uint32_t num_samples)
 {
@@ -94,6 +96,36 @@ enable_validation_layers(VkInstanceCreateInfo *info)
        }
 }
 
+static void
+enable_extensions(VkInstanceCreateInfo *info)
+{
+    static const char *ext_names[] = {
+        "VK_KHR_xcb_surface",
+        "VK_KHR_surface"
+    };
+
+    uint32_t num_extensions;
+    VkExtensionProperties *extensions;
+    int i;
+
+    vkEnumerateInstanceExtensionProperties(0, &num_extensions, 0);
+    if (!num_extensions) {
+        fprintf(stderr, "No instance extensions found.\n");
+        return;
+    }
+
+    extensions = alloca(num_extensions * sizeof *extensions);
+    vkEnumerateInstanceExtensionProperties(0, &num_extensions, extensions);
+
+    printf("Available extensions:\n");
+    for (i = 0; i < num_extensions; i++) {
+       printf(" %s\n", extensions[i].extensionName);
+    }
+
+    info->ppEnabledExtensionNames = ext_names;
+    info->enabledExtensionCount = ARRAY_SIZE(ext_names);
+}
+
 static VkInstance
 create_instance(bool enable_layers)
 {
@@ -101,17 +133,21 @@ create_instance(bool enable_layers)
        VkInstanceCreateInfo inst_info;
        VkInstance inst;
 
+    /* VkApplicationInfo */
        memset(&app_info, 0, sizeof app_info);
        app_info.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
        app_info.pApplicationName = "vktest";
        app_info.apiVersion = VK_API_VERSION_1_1;
 
+    /* VkInstanceCreateInfo */
        memset(&inst_info, 0, sizeof inst_info);
        inst_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
        inst_info.pApplicationInfo = &app_info;
 
-       if (enable_layers)
+    enable_extensions(&inst_info);
+       if (enable_layers) {
                enable_validation_layers(&inst_info);
+    }
 
        if (vkCreateInstance(&inst_info, 0, &inst) != VK_SUCCESS)
                return 0;
@@ -145,9 +181,7 @@ select_physical_device(VkInstance inst)
 static VkDevice
 create_device(struct vk_ctx *ctx, VkPhysicalDevice pdev)
 {
-    /* FIXME: swapchain */
-       const char *deviceExtensions[] = { "VK_KHR_external_memory_fd",
-                                          "VK_KHR_external_semaphore_fd" };
+       const char *deviceExtensions[] = { "VK_KHR_swapchain" };
        VkDeviceQueueCreateInfo dev_queue_info;
        VkDeviceCreateInfo dev_info;
        VkDevice dev;
@@ -966,7 +1000,7 @@ are_props_supported(struct vk_ctx *ctx, struct vk_image_props *props)
 bool
 vk_init_ctx(struct vk_ctx *ctx)
 {
-       if ((ctx->inst = create_instance(false)) == VK_NULL_HANDLE) {
+       if ((ctx->inst = create_instance(enable_layers)) == VK_NULL_HANDLE) {
                fprintf(stderr, "Failed to create Vulkan instance.\n");
                goto fail;
        }
@@ -1024,6 +1058,10 @@ fail:
 void
 vk_cleanup_ctx(struct vk_ctx *ctx)
 {
+    if (enable_layers) {
+        return;
+    }
+
     if (ctx->cmd_buf != VK_NULL_HANDLE) {
                vkResetCommandBuffer(ctx->cmd_buf,
                              VK_COMMAND_BUFFER_RESET_RELEASE_RESOURCES_BIT);