rewriting swapchain/image/allocation parts
[demo] / src / vulkan / vkutil.cc
index 051ee4d..65467c5 100644 (file)
@@ -1,3 +1,4 @@
+#include <gmath/gmath.h>
 #include <vulkan/vulkan.h>
 #include <stdio.h>
 #include <stdint.h>
 #include "vkutil.h"
 
 /* global variables */
-
-VkSwapchainKHR vkswapchain;
-VkImage *vkswapchain_images;
-int vknext_swapchain_image;
-VkSurfaceKHR vksurface;
+VkPhysicalDevice vk_physical;
+VkDevice vk_device;
+VkCommandPool vk_pool;
+VkQueue vk_queue;
+VkSurfaceKHR vk_surface;
+VkSwapchainKHR vk_swapchain;
+
+VkPipeline *vkgparent_pipeline;
+VkFramebuffer *vkfbufs;
+VkRenderPass vkrpass;
 VkInstance vkinst;
-VkPhysicalDevice vkpdev;
-VkDevice vkdev;
-VkQueue vkq;
-VkCommandPool vkcmdpool;
 VkCommandBuffer vkcmdbuf;      /* primary command buffer */
 int vkqfamily;
 
+VkSemaphore vk_img_avail_sema;
+VkSemaphore vk_rend_done_sema;
+VkImage *vkswapchain_images;
+VkImageView *vkswapchain_views;
+int vknum_swapchain_images;
+int vk_curr_swapchain_image;
+
 /* static functions */
 static const char *get_device_name_str(VkPhysicalDeviceType type);
 static const char *get_memtype_flags_str(VkMemoryPropertyFlags flags);
@@ -46,10 +55,7 @@ bool vku_have_extension(const char *name)
                vkext_count = 0;
                vkEnumerateInstanceExtensionProperties(0, &vkext_count, 0);
                if(vkext_count) {
-                       if(!(vkext = (VkExtensionProperties *)malloc(vkext_count * sizeof *vkext))) {
-                               perror("failed to allocate instance extension list");
-                               return false;
-                       }
+                       vkext = new VkExtensionProperties[vkext_count];
                        vkEnumerateInstanceExtensionProperties(0, &vkext_count, vkext);
 
                        printf("instance extensions:\n");
@@ -75,10 +81,7 @@ bool vku_have_device_extension(const char *name)
                vkdevext_count = 0;
                vkEnumerateDeviceExtensionProperties(phys_devices[sel_dev], 0, &vkdevext_count, 0);
                if(vkdevext_count) {
-                       if(!(vkdevext = (VkExtensionProperties *)malloc(vkdevext_count * sizeof *vkdevext))) {
-                               perror("failed to allocate device extension list");
-                               return false;
-                       }
+                       vkdevext = new VkExtensionProperties[vkdevext_count];
                        vkEnumerateDeviceExtensionProperties(phys_devices[sel_dev], 0, &vkdevext_count, vkdevext);
 
                        printf("selected device extensions:\n");
@@ -137,7 +140,7 @@ bool vku_create_device()
                fprintf(stderr, "failed to enumerate vulkan physical devices\n");
                return false;
        }
-       phys_devices = (VkPhysicalDevice *)malloc(num_devices * sizeof *phys_devices);
+       phys_devices = new VkPhysicalDevice[num_devices];
        if(vkEnumeratePhysicalDevices(vkinst, &num_devices, phys_devices) != 0) {
                fprintf(stderr, "failed to enumerate vulkan physical devices\n");
                return false;
@@ -179,7 +182,7 @@ bool vku_create_device()
                if(qprop_count <= 0) {
                        continue;
                }
-               qprop = (VkQueueFamilyProperties *)malloc(qprop_count * sizeof *qprop);
+               qprop = new VkQueueFamilyProperties[qprop_count];
                vkGetPhysicalDeviceQueueFamilyProperties(phys_devices[i], &qprop_count, qprop);
 
                for(unsigned int j=0; j<qprop_count; j++) {
@@ -192,12 +195,12 @@ bool vku_create_device()
                                sel_qfamily = j;
                        }
                }
-               free(qprop);
+               delete [] 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);
+               vkDestroyDevice(vk_device, 0);
                return false;
        }
 
@@ -223,16 +226,16 @@ bool vku_create_device()
        dev_info.enabledExtensionCount = sizeof devext_names / sizeof *devext_names;
        dev_info.ppEnabledExtensionNames = devext_names;
 
-       if(vkCreateDevice(phys_devices[sel_dev], &dev_info, 0, &vkdev) != 0) {
+       if(vkCreateDevice(phys_devices[sel_dev], &dev_info, 0, &vk_device) != 0) {
                fprintf(stderr, "failed to create device %d\n", sel_dev);
                return false;
        }
        printf("created device %d\n", sel_dev);
 
-       vkpdev = phys_devices[sel_dev];
+       vk_physical = phys_devices[sel_dev];
        vkqfamily = sel_qfamily;
 
-       vkGetDeviceQueue(vkdev, sel_qfamily, 0, &vkq);
+       vkGetDeviceQueue(vk_device, sel_qfamily, 0, &vk_queue);
 
        /* create command buffer pool */
        memset(&cmdpool_info, 0, sizeof cmdpool_info);
@@ -240,15 +243,15 @@ bool vku_create_device()
        cmdpool_info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
        cmdpool_info.queueFamilyIndex = sel_qfamily;
 
-       if(vkCreateCommandPool(vkdev, &cmdpool_info, 0, &vkcmdpool) != 0) {
-               fprintf(stderr, "failed to get command quque!\n");
+       if(vkCreateCommandPool(vk_device, &cmdpool_info, 0, &vk_pool) != 0) {
+               fprintf(stderr, "failed to get command queue!\n");
                return false;
        }
 
-       if(!(vkcmdbuf = vku_alloc_cmdbuf(vkcmdpool, VK_COMMAND_BUFFER_LEVEL_PRIMARY))) {
+/*     if(!(vkcmdbuf = vku_alloc_cmdbuf(vk_pool, VK_COMMAND_BUFFER_LEVEL_PRIMARY))) {
                fprintf(stderr, "failed to create primary command buffer\n");
                return false;
-       }
+       } */
 
        return true;
 }
@@ -256,17 +259,40 @@ bool vku_create_device()
 void vku_cleanup()
 {
        if(vkinst) {
-               vkDeviceWaitIdle(vkdev);
-               vkDestroyCommandPool(vkdev, vkcmdpool, 0);
-               vkDestroyDevice(vkdev, 0);
+               vkDeviceWaitIdle(vk_device);
+               vkDestroyCommandPool(vk_device, vk_pool, 0);
+
+               vkDestroySemaphore(vk_device, vk_img_avail_sema, 0);
+               vkDestroySemaphore(vk_device, vk_rend_done_sema, 0);
+
+               vkDestroyDevice(vk_device, 0);
                vkDestroyInstance(vkinst, 0);
                vkinst = 0;
        }
 
-       free(phys_devices);
+       delete [] phys_devices;
        phys_devices = 0;
 }
 
+bool vku_create_semaphores()
+{
+       VkSemaphoreCreateInfo sinf;
+       memset(&sinf, 0, sizeof sinf);
+
+       sinf.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
+       if(vkCreateSemaphore(vk_device, &sinf, 0, &vk_img_avail_sema) != VK_SUCCESS) {
+               fprintf(stderr, "Failed to create semaphore\n");
+               return false;
+       }
+
+       if(vkCreateSemaphore(vk_device, &sinf, 0, &vk_rend_done_sema) != VK_SUCCESS) {
+               fprintf(stderr, "Failed to create semaphore\n");
+               return false;
+       }
+
+       return true;
+}
+
 VkCommandBuffer vku_alloc_cmdbuf(VkCommandPool pool, VkCommandBufferLevel level)
 {
        VkCommandBuffer cmdbuf;
@@ -278,7 +304,7 @@ VkCommandBuffer vku_alloc_cmdbuf(VkCommandPool pool, VkCommandBufferLevel level)
        inf.level = level;
        inf.commandBufferCount = 1;
 
-       if(vkAllocateCommandBuffers(vkdev, &inf, &cmdbuf) != 0) {
+       if(vkAllocateCommandBuffers(vk_device, &inf, &cmdbuf) != 0) {
                return 0;
        }
        return cmdbuf;
@@ -286,7 +312,7 @@ VkCommandBuffer vku_alloc_cmdbuf(VkCommandPool pool, VkCommandBufferLevel level)
 
 void vku_free_cmdbuf(VkCommandPool pool, VkCommandBuffer buf)
 {
-       vkFreeCommandBuffers(vkdev, pool, 1, &buf);
+       vkFreeCommandBuffers(vk_device, pool, 1, &buf);
 }
 
 void vku_begin_cmdbuf(VkCommandBuffer buf, unsigned int flags)
@@ -326,26 +352,49 @@ void vku_submit_cmdbuf(VkQueue q, VkCommandBuffer buf, VkFence done_fence)
 VkSwapchainKHR vku_create_swapchain(VkSurfaceKHR surf, int xsz, int ysz, int n,
                                     VkPresentModeKHR pmode, VkSwapchainKHR prev)
 {
+       VkSurfaceCapabilitiesKHR scap;
+       vkGetPhysicalDeviceSurfaceCapabilitiesKHR(vk_physical, surf, &scap);
+
+       VkPhysicalDeviceMemoryProperties mprops;
+       vkGetPhysicalDeviceMemoryProperties(vk_physical, &mprops);
+
+       uint32_t pmcnt;
+       vkGetPhysicalDeviceSurfacePresentModesKHR(vk_physical, surf, &pmcnt, 0);
+       VkPresentModeKHR scpm = VK_PRESENT_MODE_IMMEDIATE_KHR;
+       VkExtent2D scext;
+       scext.width = xsz;
+       scext.height = ysz;
+
+//     VkSurfaceTransformFlagBitsKHR pretransf;
+//     if(scap.supportedTransforms & VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR) {
+//             pretransf = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
+//     } else {
+//             pretransf = scap.currentTransform;
+//     }
+
        VkSwapchainKHR sc;
        VkSwapchainCreateInfoKHR inf;
 
+       VkSurfaceFormatKHR sformat;
+       sformat.format = VK_FORMAT_B8G8R8A8_UNORM;
+
        memset(&inf, 0, sizeof inf);
        inf.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
        inf.surface = surf;
        inf.minImageCount = n;
-       inf.imageFormat = VK_FORMAT_B8G8R8A8_UNORM;     /* TODO enumerate and choose */
-       inf.imageColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
-       inf.imageExtent.width = xsz;
-       inf.imageExtent.height = ysz;
+       inf.imageFormat = sformat.format;       /* TODO enumerate and choose */
+       inf.imageColorSpace = sformat.colorSpace;
+       inf.imageExtent = scext;
        inf.imageArrayLayers = 1;
        inf.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
        inf.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;       /* XXX make this an option? */
        inf.preTransform = VK_SURFACE_TRANSFORM_INHERIT_BIT_KHR;
        inf.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
        inf.presentMode = pmode;
-       inf.oldSwapchain = prev;
+       inf.oldSwapchain = VK_NULL_HANDLE;
+       inf.clipped = VK_TRUE;
 
-       if(vkCreateSwapchainKHR(vkdev, &inf, 0, &sc) != 0) {
+       if(vkCreateSwapchainKHR(vk_device, &inf, 0, &sc) != 0) {
                return 0;
        }
        return sc;
@@ -356,23 +405,50 @@ VkImage *vku_get_swapchain_images(VkSwapchainKHR sc, int *count)
        uint32_t nimg;
        VkImage *images;
 
-       if(vkGetSwapchainImagesKHR(vkdev, sc, &nimg, 0) != 0) {
-               return 0;
-       }
-       if(!(images = (VkImage *)malloc(nimg * sizeof *images))) {
+       if(vkGetSwapchainImagesKHR(vk_device, sc, &nimg, 0) != 0) {
                return 0;
        }
-       vkGetSwapchainImagesKHR(vkdev, sc, &nimg, images);
+       images = new VkImage[nimg];
+       vkGetSwapchainImagesKHR(vk_device, sc, &nimg, images);
 
        if(count) *count = (int)nimg;
        return images;
 }
 
+VkImageView *vku_create_image_views(VkImage *images, int count)
+{
+       VkImageView *iviews;
+
+       iviews = new VkImageView[count];
+       for(int i=0; i<count; i++) {
+               VkImageViewCreateInfo inf;
+               memset(&inf, 0, sizeof inf);
+
+               inf.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
+               inf.image = images[i];
+               inf.viewType = VK_IMAGE_VIEW_TYPE_2D;
+               inf.format = VK_FORMAT_B8G8R8A8_UNORM; //TODO
+               inf.components.r = inf.components.g = inf.components.b =
+                       inf.components.a = VK_COMPONENT_SWIZZLE_IDENTITY;
+               inf.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
+               inf.subresourceRange.levelCount = 1;
+               inf.subresourceRange.layerCount = 1;
+
+               if(vkCreateImageView(vk_device, &inf, 0, iviews) != 0) {
+                       fprintf(stderr, "Failed to create image views.\n");
+                       delete iviews;
+                       return 0;
+               }
+       }
+
+       return iviews;
+}
+
 int vku_get_next_image(VkSwapchainKHR sc)
 {
        uint32_t next;
 
-       if(vkAcquireNextImageKHR(vkdev, sc, UINT64_MAX, 0, 0, &next) != 0) {
+       if(vkAcquireNextImageKHR(vk_device, sc, UINT64_MAX, 0, 0, &next) != 0) {
                return -1;
        }
        return (int)next;
@@ -391,7 +467,90 @@ void vku_present(VkSwapchainKHR sc, int img_idx)
        inf.pImageIndices = &index;
        inf.pResults = &res;
 
-       vkQueuePresentKHR(vkq, &inf);
+       vkQueuePresentKHR(vk_queue, &inf);
+}
+
+bool vku_create_renderpass()
+{
+       VkAttachmentDescription attachments[2];
+       memset(&attachments, 0, 2 * sizeof *attachments);
+
+       /* color */
+       attachments[0].format = VK_FORMAT_B8G8R8A8_UNORM;
+       attachments[0].samples = VK_SAMPLE_COUNT_1_BIT;
+       attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
+       attachments[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
+       attachments[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
+       attachments[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
+       attachments[0].initialLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
+       attachments[0].finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
+
+       /* depth */
+       attachments[1].format = VK_FORMAT_D32_SFLOAT_S8_UINT; //TODO
+       attachments[1].samples = VK_SAMPLE_COUNT_1_BIT;
+       attachments[1].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
+       attachments[1].storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
+       attachments[1].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
+       attachments[1].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
+       attachments[1].initialLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
+       attachments[1].finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
+
+       VkAttachmentReference color_ref;
+       color_ref.attachment = 0;
+       color_ref.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
+
+       VkAttachmentReference depth_ref;
+       depth_ref.attachment = 1;
+       depth_ref.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
+
+       VkSubpassDescription subpass_desc;
+       memset(&subpass_desc, 0, sizeof subpass_desc);
+
+       subpass_desc.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
+       subpass_desc.colorAttachmentCount = 1;
+       subpass_desc.pColorAttachments = &color_ref;
+       subpass_desc.pDepthStencilAttachment = &depth_ref;
+
+       VkRenderPassCreateInfo inf;
+       memset(&inf, 0, sizeof inf);
+
+       inf.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
+       inf.attachmentCount = 2;
+       inf.pAttachments = attachments;
+       inf.subpassCount = 1;
+       inf.pSubpasses = &subpass_desc;
+
+       if(vkCreateRenderPass(vk_device, &inf, 0, &vkrpass) != VK_SUCCESS) {
+               return false;
+       }
+
+       return true;
+}
+
+bool vku_create_framebuffers(VkImageView *image_views, int count, int w, int h)
+{
+       delete vkfbufs;
+       vkfbufs = new VkFramebuffer[count];
+
+       VkFramebufferCreateInfo inf;
+       memset(&inf, 0, sizeof inf);
+
+       inf.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
+       inf.renderPass = vkrpass;
+       inf.attachmentCount = count;
+       inf.pAttachments = image_views;
+       inf.width = w;
+       inf.height = h;
+       inf.layers = 1;
+
+       for(int i=0; i<count; i++) {
+               if(vkCreateFramebuffer(vk_device, &inf, 0, &vkfbufs[i]) != VK_SUCCESS) {
+                       fprintf(stderr, "Failed to create framebuffer for image view: %d\n", i);
+                       delete vkfbufs;
+                       return false;
+               }
+       }
+       return true;
 }
 
 struct vku_buffer *vku_create_buffer(int sz, unsigned int usage)
@@ -399,10 +558,7 @@ struct vku_buffer *vku_create_buffer(int sz, unsigned int usage)
        struct vku_buffer *buf;
        VkBufferCreateInfo binfo;
 
-       if(!(buf = (vku_buffer *)malloc(sizeof *buf))) {
-               perror("failed to allocate vk_buffer structure");
-               return 0;
-       }
+       buf = new vku_buffer;
 
        memset(&binfo, 0, sizeof binfo);
        binfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
@@ -410,7 +566,7 @@ struct vku_buffer *vku_create_buffer(int sz, unsigned int usage)
        binfo.usage = usage;
        binfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
 
-       if(vkCreateBuffer(vkdev, &binfo, 0, &buf->buf) != 0) {
+       if(vkCreateBuffer(vk_device, &binfo, 0, &buf->buf) != 0) {
                fprintf(stderr, "failed to create %d byte buffer (usage: %x)\n", sz, usage);
                return 0;
        }
@@ -421,8 +577,8 @@ struct vku_buffer *vku_create_buffer(int sz, unsigned int usage)
 void vku_destroy_buffer(struct vku_buffer *buf)
 {
        if(buf) {
-               vkDestroyBuffer(vkdev, buf->buf, 0);
-               free(buf);
+               vkDestroyBuffer(vk_device, buf->buf, 0);
+               delete buf;
        }
 }
 
@@ -437,257 +593,6 @@ void vku_cmd_copybuf(VkCommandBuffer cmdbuf, VkBuffer dest, int doffs,
        vkCmdCopyBuffer(cmdbuf, src, dest, 1, &copy);
 }
 
-/* paste
-
-static bool create_instance()
-{
-       uint32_t layer_count = 0;
-       std::vector<const char *> enabled_layers;
-
-       if(vkEnumerateInstanceLayerProperties(&layer_count, 0) != VK_SUCCESS) {
-               fprintf(stderr, "Failed to query layer properties.\n");
-               return false;
-       }
-
-       if(layer_count > 0) {
-               VkLayerProperties *layers = (VkLayerProperties *)alloca(layer_count * sizeof *layers);
-               vkEnumerateInstanceLayerProperties(&layer_count, layers);
-               for(uint32_t i=0; i<layer_count; i++) {
-                       if(strcmp(layers[i].layerName, "VK_LAYER_LUNARG_standard_validation")) {
-                               enabled_layers.push_back(layers[i].layerName);
-                       }
-               }
-       }
-
-       uint32_t extensions_count = 0;
-       std::vector<const char *> enabled_extensions;
-
-       if(vkEnumerateInstanceExtensionProperties(0, &extensions_count, 0) != VK_SUCCESS) {
-               fprintf(stderr, "Failed to enumerate instance extension properties\n");
-               return false;
-       }
-
-       if(extensions_count > 0) {
-               VkExtensionProperties *extensions = (VkExtensionProperties *)alloca(extensions_count * sizeof *extensions);
-               vkEnumerateInstanceExtensionProperties(0, &extensions_count, extensions);
-
-               for(uint32_t i=0; i<extensions_count; i++) {
-                       printf("Extension %u: %s %u.\n", i, extensions[i].extensionName, extensions[i].specVersion);
-                       //enable all the available extensions
-                       enabled_extensions.push_back(extensions[i].extensionName);
-                       enabled_extension_names.push_back(std::string(extensions[i].extensionName));
-               }
-       }
-
-       VkInstanceCreateInfo create_info;
-       memset(&create_info, 0, sizeof create_info);
-       create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
-
-       if(!enabled_layers.empty()) {
-               create_info.enabledLayerCount = enabled_layers.size();
-               create_info.ppEnabledLayerNames = enabled_layers.data();
-       }
-
-       if(!enabled_extensions.empty()) {
-               create_info.enabledExtensionCount = enabled_extensions.size();
-               create_info.ppEnabledExtensionNames = enabled_extensions.data();
-       }
-
-       if(vkCreateInstance(&create_info, 0, &inst) != VK_SUCCESS) {
-               fprintf(stderr, "Failed to create instance.\n");
-               return false;
-       }
-
-       if(!create_device())
-               return false;
-
-       return true;
-}
-
-static bool create_device()
-{
-       int qfam_idx = -1;
-       int pdev_idx = -1;
-
-       uint32_t dev_count;
-       if(vkEnumeratePhysicalDevices(inst, &dev_count, 0) != VK_SUCCESS) {
-               fprintf(stderr, "Failed to enumerate physical devices.\n");
-               return false;
-       }
-       printf("%u devices found.\n", (unsigned int)dev_count);
-
-       VkPhysicalDevice *phys_dev = (VkPhysicalDevice *)alloca(dev_count * sizeof *phys_dev);
-       vkEnumeratePhysicalDevices(inst, &dev_count, phys_dev);
-       VkPhysicalDeviceMemoryProperties memprop;
-
-       for(uint32_t i=0; i<dev_count; i++) {
-               VkPhysicalDeviceProperties dev_props;
-               vkGetPhysicalDeviceProperties(phys_dev[i], &dev_props);
-
-               //memory heaps:
-               vkGetPhysicalDeviceMemoryProperties(phys_dev[i], &memprop);
-               printf("\tNumber of heaps: %u\n", memprop.memoryHeapCount);
-               for(uint32_t j=0; j<memprop.memoryHeapCount; j++) {
-                       printf("\t\tHeap %u size: %lu\n", j, (unsigned long)memprop.memoryHeaps[j].size);
-                       printf("\t\tHeap %u flags: %s\n", j, heap_flags_str(memprop.memoryHeaps[j].flags));
-               }
-               //memory types
-               printf("\tMemory types: %u\n", memprop.memoryTypeCount);
-               for(uint32_t j=0; j<memprop.memoryTypeCount; j++) {
-                       printf("\t\tType %u heap index: %u\n", j, memprop.memoryTypes[j].heapIndex);
-                       printf("\t\tType %u flags: %s\n", j, memtype_flags_str(memprop.memoryTypes[j].propertyFlags));
-               }
-
-               //supported features
-               VkPhysicalDeviceFeatures features;
-               vkGetPhysicalDeviceFeatures(phys_dev[i], &features);
-
-               //queue families
-               uint32_t qfam_count;
-               vkGetPhysicalDeviceQueueFamilyProperties(phys_dev[i], &qfam_count, 0);
-               printf("\tQueue Families: %u\n", qfam_count);
-               VkQueueFamilyProperties *qfam_props = new VkQueueFamilyProperties[qfam_count];
-               vkGetPhysicalDeviceQueueFamilyProperties(phys_dev[i], &qfam_count, qfam_props);
-               for(uint32_t j=0; j<qfam_count; j++) {
-                       printf("\t\tFamily %u flags: %s\n", j, queue_flags_str(qfam_props[j].queueFlags));
-                       printf("\t\tFamily %u number of queues: %u\n", j, qfam_props[j].queueCount);
-
-                       if((qfam_props[j].queueFlags & VK_QUEUE_GRAPHICS_BIT) && (pdev_idx == -1)) {
-                               pdev_idx = i;
-                               qfam_idx = j;
-                               num_queues = qfam_props[j].queueCount;
-                       }
-               }
-               delete [] qfam_props;
-       }
-
-       if(pdev_idx == -1) {
-               fprintf(stderr, "No suitable devices found.\n");
-               return false;
-       }
-
-       pdev = *(phys_dev + pdev_idx);
-       qfamily_idx = qfam_idx;
-
-               uint32_t layer_count;
-               if(vkEnumerateDeviceLayerProperties(pdev, &layer_count, 0) != VK_SUCCESS) {
-                       fprintf(stderr, "Failed to enumerate device layers.\n");
-                       return false;
-               }
-               if(layer_count > 0) {
-                       VkLayerProperties *layers = (VkLayerProperties*)alloca(layer_count * sizeof *layers);
-                       vkEnumerateDeviceLayerProperties(pdev, &layer_count, layers);
-                       printf("%u layers found.\n", layer_count);
-                       for(uint32_t i=0; i<layer_count; i++) {
-                               printf("Layer %u: %s (%u, %u)\n", i, layers[i].layerName,
-                                               layers[i].specVersion, layers[i].implementationVersion);
-                               printf("\tDesc: %s\n", layers[i].description);
-                       }
-               }
-
-       VkDeviceCreateInfo dev_info;
-       memset(&dev_info, 0, sizeof dev_info);
-       dev_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
-
-       VkDeviceQueueCreateInfo dev_qinfo;
-       memset(&dev_qinfo, 0, sizeof dev_qinfo);
-       dev_qinfo.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
-       dev_qinfo.queueFamilyIndex = qfam_idx;
-       dev_qinfo.queueCount = 1;
-
-       dev_info.queueCreateInfoCount = 1;
-       dev_info.pQueueCreateInfos = &dev_qinfo;
-
-       if(vkCreateDevice(pdev, &dev_info, 0, &device) != VK_SUCCESS) {
-               fprintf(stderr, "Failed to create logical device.\n");
-               return false;
-       }
-
-       vkGetPhysicalDeviceMemoryProperties(pdev, &memprop);
-       for(uint32_t j=0; j<memprop.memoryTypeCount; j++) {
-               if(memprop.memoryTypes[j].propertyFlags & VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT) {
-                       device_mem_idx = j;
-                       printf("Selected device memory index: %u\n", device_mem_idx);
-                       break;
-               }
-       }
-
-       return true;
-}
-
-static const char *dev_type_str(VkPhysicalDeviceType type)
-{
-       switch(type) {
-       case VK_PHYSICAL_DEVICE_TYPE_OTHER:
-               return "other";
-       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";
-}
-
-static const char *heap_flags_str(VkMemoryHeapFlags flags)
-{
-       static std::string str;
-       str.clear();
-       if(flags & VK_MEMORY_HEAP_DEVICE_LOCAL_BIT) {
-               str += "device-local ";
-       }
-       if(!str.empty())
-               str.pop_back();
-       return str.c_str();
-}
-
-static const char *memtype_flags_str(VkMemoryPropertyFlags flags)
-{
-       static std::string str;
-       str.clear();
-       if(flags & VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT) {
-               str += "device-local ";
-       }
-       if(flags & VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT) {
-               str += "host-visible ";
-       }
-       if(flags & VK_MEMORY_PROPERTY_HOST_COHERENT_BIT) {
-               str += "host-coherent ";
-       }
-       if(flags & VK_MEMORY_PROPERTY_HOST_CACHED_BIT) {
-               str += "host-cached ";
-       }
-       if(flags & VK_MEMORY_PROPERTY_LAZILY_ALLOCATED_BIT) {
-               str += "lazily-allocated ";
-       }
-       if(!str.empty())
-               str.pop_back();
-       return str.c_str();
-}
-
-static const char *queue_flags_str(VkQueueFlags flags)
-{
-       static std::string str;
-       str.clear();
-       if(flags & VK_QUEUE_GRAPHICS_BIT)
-               str += "graphics ";
-       if(flags & VK_QUEUE_COMPUTE_BIT)
-               str += "compute ";
-       if(flags & VK_QUEUE_TRANSFER_BIT)
-               str += "transfer ";
-       if(flags & VK_QUEUE_SPARSE_BINDING_BIT)
-               str += "sparse-binding ";
-       if(!str.empty())
-               str.pop_back();
-       return str.c_str();
-}
-*/
-
 const char *vku_get_vulkan_error_str(VkResult error)
 {
        std::string errmsg;
@@ -733,7 +638,6 @@ const char *vku_get_vulkan_error_str(VkResult error)
                break;
        case VK_ERROR_FEATURE_NOT_PRESENT:
                errmsg = std::string("VK_ERROR_FEATURE_NOT_PRESENT");
-               break;
        case VK_ERROR_INCOMPATIBLE_DRIVER:
                errmsg = std::string("VK_ERROR_INCOMPATIBLE_DRIVER");
                break;
@@ -754,6 +658,90 @@ const char *vku_get_vulkan_error_str(VkResult error)
        return errmsg.c_str();
 }
 
+bool vku_create_graphics_pipeline(VkPipelineLayout *layout)
+{
+       VkGraphicsPipelineCreateInfo inf;
+       memset(&inf, 0, sizeof inf);
+
+       inf.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
+       inf.layout = *layout;
+       inf.renderPass = vkrpass;
+
+       /* states */
+
+       /* how primitives are assembled */
+       VkPipelineInputAssemblyStateCreateInfo ias;
+       memset(&ias, 0, sizeof ias);
+       ias.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
+       ias.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
+
+       /* rasterisation */
+       VkPipelineRasterizationStateCreateInfo rsi;
+       memset(&rsi, 0, sizeof rsi);
+       rsi.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
+       rsi.polygonMode = VK_POLYGON_MODE_FILL;
+       rsi.cullMode = VK_CULL_MODE_BACK_BIT;
+       rsi.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
+       rsi.lineWidth = 1.0f;
+
+       /* blend factors */
+       VkPipelineColorBlendAttachmentState bas[1];
+       memset(&bas[0], 0, sizeof bas[0]);
+
+       VkPipelineColorBlendStateCreateInfo cbs;
+       memset(&cbs, 0, sizeof cbs);
+       cbs.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
+       cbs.attachmentCount = 1;
+       cbs.pAttachments = bas;
+
+       /* number of viewport and scissors in this pipeline */
+       VkPipelineViewportStateCreateInfo vs;
+       memset(&vs, 0, sizeof vs);
+       vs.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
+       vs.viewportCount = 1;
+       vs.scissorCount = 1;
+
+       /* dynamic states: that can be changed later */
+//     std::vector<VkDynamicState> ds_enabled;
+//     ds_enabled.push_back(VK_DYNAMIC_STATE_VIEWPORT);
+       //ds_enabled.push_back(VK_DYNAMIC_STATE_SCISSOR);
+//     VkPipelineDynamicStateCreateInfo ds;
+//     ds.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO;
+//     ds.pDynamicStates = ds_enabled.data();
+//     ds.dynamicStateCount = static_cast<uint32_t>(ds_enabled.size());
+
+       /* depth tests */
+       VkPipelineDepthStencilStateCreateInfo dsi;
+       memset(&dsi, 0, sizeof dsi);
+       dsi.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
+       dsi.depthTestEnable = VK_TRUE;
+       dsi.depthWriteEnable = VK_TRUE;
+       dsi.depthCompareOp = VK_COMPARE_OP_LESS_OR_EQUAL;
+       dsi.back.failOp = VK_STENCIL_OP_KEEP;
+       dsi.back.passOp = VK_STENCIL_OP_KEEP;
+       dsi.back.compareOp = VK_COMPARE_OP_ALWAYS;
+       dsi.front = dsi.back;
+
+       /* multisampling - must be set even if not used */
+       VkPipelineMultisampleStateCreateInfo msi;
+       memset(&msi, 0, sizeof msi);
+       msi.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
+       msi.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
+
+       /* vertex input descriptions */
+       VkVertexInputBindingDescription vib;
+       memset(&vib, 0, sizeof vib);
+       vib.stride = sizeof(Vec3);
+       vib.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
+
+       /* input attr bindings */
+       VkVertexInputAttributeDescription via[2];
+       memset(&via, 0, sizeof via);
+       via[0].format = VK_FORMAT_R32G32B32A32_SFLOAT;
+
+       return true;
+}
+
 static const char *get_device_name_str(VkPhysicalDeviceType type)
 {
        switch(type) {