# HG changeset patch
# User John Tsiombikas <nuclear@member.fsf.org>
# Date 1459484027 -10800
# Node ID a13895a5f67316cc494fe02fa04678ebc2aec1f5

initial commit

diff -r 000000000000 -r a13895a5f673 Makefile
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Makefile	Fri Apr 01 07:13:47 2016 +0300
@@ -0,0 +1,12 @@
+obj = main.o
+bin = test
+
+CFLAGS = -pedantic -Wall -g
+LDFLAGS = -lvulkan
+
+$(bin): $(obj)
+	$(CC) -o $@ $(obj) $(LDFLAGS)
+
+.PHONY: clean
+clean:
+	rm -f $(obj) $(bin)
diff -r 000000000000 -r a13895a5f673 main.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.c	Fri Apr 01 07:13:47 2016 +0300
@@ -0,0 +1,161 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <alloca.h>
+#include <vulkan/vulkan.h>
+
+const char *get_device_name(VkPhysicalDeviceType type);
+const char *get_queue_flag_string(VkQueueFlagBits flags);
+int ver_major(uint32_t ver);
+int ver_minor(uint32_t ver);
+int ver_patch(uint32_t ver);
+
+int main(void)
+{
+	int i, j;
+	VkInstance vk;
+	VkInstanceCreateInfo inst_info;
+	VkPhysicalDevice *devices;
+	VkDevice vkdev;
+	VkDeviceCreateInfo dev_info;
+	VkDeviceQueueCreateInfo queue_info;
+	uint32_t num_devices;
+	int sel_dev = -1;
+	int sel_qfamily = -1;
+	float qprio = 0.0f;
+
+	memset(&inst_info, 0, sizeof inst_info);
+	inst_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
+
+	if(vkCreateInstance(&inst_info, 0, &vk) != 0) {
+		fprintf(stderr, "failed to create vulkan instance\n");
+		return 1;
+	}
+	printf("created vulkan instance\n");
+
+	if(vkEnumeratePhysicalDevices(vk, &num_devices, 0) != 0) {
+		fprintf(stderr, "failed to enumerate vulkan physical devices\n");
+		return 1;
+	}
+	devices = alloca(num_devices * sizeof *devices);
+	if(vkEnumeratePhysicalDevices(vk, &num_devices, devices) != 0) {
+		fprintf(stderr, "failed to enumerate vulkan physical devices\n");
+		return 1;
+	}
+	printf("found %u physical device(s)\n", (unsigned int)num_devices);
+
+	for(i=0; i<(int)num_devices; i++) {
+		VkPhysicalDeviceProperties dev_prop;
+		VkQueueFamilyProperties *qprop;
+		uint32_t qprop_count;
+
+		vkGetPhysicalDeviceProperties(devices[i], &dev_prop);
+
+		printf("Device %d: %s\n", i, dev_prop.deviceName);
+		printf("  type: %s\n", get_device_name(dev_prop.deviceType));
+		printf("  API version: %d.%d.%d\n", ver_major(dev_prop.apiVersion), ver_minor(dev_prop.apiVersion),
+				ver_patch(dev_prop.apiVersion));
+		printf("  driver version: %d.%d.%d\n", ver_major(dev_prop.driverVersion), ver_minor(dev_prop.driverVersion),
+				ver_patch(dev_prop.driverVersion));
+		printf("  vendor id: %x  device id: %x\n", dev_prop.vendorID, dev_prop.deviceID);
+
+		vkGetPhysicalDeviceQueueFamilyProperties(devices[i], &qprop_count, 0);
+		if(qprop_count <= 0) {
+			continue;
+		}
+		qprop = malloc(qprop_count * sizeof *qprop);
+		vkGetPhysicalDeviceQueueFamilyProperties(devices[i], &qprop_count, qprop);
+
+		for(j=0; j<qprop_count; j++) {
+			printf("  Queue family %d:\n", j);
+			printf("    flags: %s\n", get_queue_flag_string(qprop[j].queueFlags));
+			printf("    num queues: %u\n", qprop[j].queueCount);
+
+			if(qprop[j].queueFlags & VK_QUEUE_GRAPHICS_BIT) {
+				sel_dev = i;
+				sel_qfamily = j;
+			}
+		}
+		free(qprop);
+	}
+
+	if(sel_dev < 0 || sel_qfamily < 0) {
+		fprintf(stderr, "failed to find any device with a graphics-capable command queue\n");
+		vkDestroyDevice(vkdev, 0);
+		return 1;
+	}
+
+	memset(&queue_info, 0, sizeof queue_info);
+	queue_info.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
+	queue_info.queueFamilyIndex = sel_qfamily;
+	queue_info.queueCount = 1;
+	queue_info.pQueuePriorities = &qprio;
+
+	memset(&dev_info, 0, sizeof dev_info);
+	dev_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
+	dev_info.queueCreateInfoCount = 1;
+	dev_info.pQueueCreateInfos = &queue_info;
+
+	if(vkCreateDevice(devices[sel_dev], &dev_info, 0, &vkdev) != 0) {
+		fprintf(stderr, "failed to create device %d\n", sel_dev);
+		return 1;
+	}
+	printf("created device %d\n", sel_dev);
+
+	vkDestroyDevice(vkdev, 0);
+	vkDestroyInstance(vk, 0);
+	return 0;
+}
+
+
+const char *get_device_name(VkPhysicalDeviceType type)
+{
+	switch(type) {
+	case VK_PHYSICAL_DEVICE_TYPE_INTEGRATED_GPU:
+		return "integrated GPU";
+	case VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU:
+		return "discrete GPU";
+	case VK_PHYSICAL_DEVICE_TYPE_VIRTUAL_GPU:
+		return "virtual GPU";
+	case VK_PHYSICAL_DEVICE_TYPE_CPU:
+		return "CPU";
+	default:
+		break;
+	}
+	return "unknown";
+}
+
+const char *get_queue_flag_string(VkQueueFlagBits flags)
+{
+	static char str[128];
+
+	str[0] = 0;
+	if(flags & VK_QUEUE_GRAPHICS_BIT) {
+		strcat(str, "graphics ");
+	}
+	if(flags & VK_QUEUE_COMPUTE_BIT) {
+		strcat(str, "compute ");
+	}
+	if(flags & VK_QUEUE_TRANSFER_BIT) {
+		strcat(str, "transfer ");
+	}
+	if(flags & VK_QUEUE_SPARSE_BINDING_BIT) {
+		strcat(str, "sparse-binding ");
+	}
+	return str;
+}
+
+int ver_major(uint32_t ver)
+{
+	return (ver >> 22) & 0x3ff;
+}
+
+int ver_minor(uint32_t ver)
+{
+	return (ver >> 12) & 0x3ff;
+}
+
+int ver_patch(uint32_t ver)
+{
+	return ver & 0xfff;
+}