backup - missing some
[demo] / src / vulkan / vkutil.cc
index 65467c5..04a9fe5 100644 (file)
@@ -7,29 +7,20 @@
 #include <string>
 #include <vector>
 
+#include "allocator.h"
 #include "vkutil.h"
 
 /* global variables */
 VkPhysicalDevice vk_physical;
 VkDevice vk_device;
-VkCommandPool vk_pool;
+VkInstance vk_instance;
 VkQueue vk_queue;
+int vk_qfamily;
+VkCommandPool vk_pool;
 VkSurfaceKHR vk_surface;
 VkSwapchainKHR vk_swapchain;
-
-VkPipeline *vkgparent_pipeline;
-VkFramebuffer *vkfbufs;
-VkRenderPass vkrpass;
-VkInstance vkinst;
-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;
+VkRenderPass vk_renderpass;
+VkDescriptorPool vk_dpool;
 
 /* static functions */
 static const char *get_device_name_str(VkPhysicalDeviceType type);
@@ -131,17 +122,17 @@ bool vku_create_device()
        inst_info.ppEnabledExtensionNames = ext_names;
        inst_info.enabledExtensionCount = sizeof ext_names / sizeof *ext_names;
 
-       if(vkCreateInstance(&inst_info, 0, &vkinst) != 0) {
+       if(vkCreateInstance(&inst_info, 0, &vk_instance) != 0) {
                fprintf(stderr, "failed to create vulkan instance\n");
                return false;
        }
        printf("created vulkan instance\n");
-       if(vkEnumeratePhysicalDevices(vkinst, &num_devices, 0) != 0) {
+       if(vkEnumeratePhysicalDevices(vk_instance, &num_devices, 0) != 0) {
                fprintf(stderr, "failed to enumerate vulkan physical devices\n");
                return false;
        }
        phys_devices = new VkPhysicalDevice[num_devices];
-       if(vkEnumeratePhysicalDevices(vkinst, &num_devices, phys_devices) != 0) {
+       if(vkEnumeratePhysicalDevices(vk_instance, &num_devices, phys_devices) != 0) {
                fprintf(stderr, "failed to enumerate vulkan physical devices\n");
                return false;
        }
@@ -233,7 +224,7 @@ bool vku_create_device()
        printf("created device %d\n", sel_dev);
 
        vk_physical = phys_devices[sel_dev];
-       vkqfamily = sel_qfamily;
+       vk_qfamily = sel_qfamily;
 
        vkGetDeviceQueue(vk_device, sel_qfamily, 0, &vk_queue);
 
@@ -248,51 +239,29 @@ bool vku_create_device()
                return false;
        }
 
-/*     if(!(vkcmdbuf = vku_alloc_cmdbuf(vk_pool, VK_COMMAND_BUFFER_LEVEL_PRIMARY))) {
-               fprintf(stderr, "failed to create primary command buffer\n");
-               return false;
-       } */
+       /*      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;
 }
 
 void vku_cleanup()
 {
-       if(vkinst) {
+       if(vk_instance) {
                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;
+               vkDestroyInstance(vk_instance, 0);
+               vk_instance = 0;
        }
 
        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;
@@ -310,6 +279,24 @@ VkCommandBuffer vku_alloc_cmdbuf(VkCommandPool pool, VkCommandBufferLevel level)
        return cmdbuf;
 }
 
+bool vku_alloc_cmdbufs(VkCommandPool pool, VkCommandBufferLevel level, unsigned int count, VkCommandBuffer *buf_array)
+{
+       VkCommandBufferAllocateInfo cinf;
+       memset(&cinf, 0, sizeof cinf);
+
+       cinf.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
+       cinf.commandPool = vk_pool;
+       cinf.level = level;
+       cinf.commandBufferCount = count;
+
+       if(vkAllocateCommandBuffers(vk_device, &cinf, buf_array) != VK_SUCCESS) {
+               fprintf(stderr, "Failed to allocate command buffer\n");
+               return false;
+       }
+
+       return true;
+}
+
 void vku_free_cmdbuf(VkCommandPool pool, VkCommandBuffer buf)
 {
        vkFreeCommandBuffers(vk_device, pool, 1, &buf);
@@ -349,101 +336,39 @@ void vku_submit_cmdbuf(VkQueue q, VkCommandBuffer buf, VkFence done_fence)
        vkQueueSubmit(q, 1, &info, done_fence);
 }
 
-VkSwapchainKHR vku_create_swapchain(VkSurfaceKHR surf, int xsz, int ysz, int n,
-                                    VkPresentModeKHR pmode, VkSwapchainKHR prev)
+bool vku_get_surface_format(VkPhysicalDevice gpu, VkSurfaceKHR surface, VkSurfaceFormatKHR *sformat)
 {
-       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;
-//     }
+       uint32_t fcount;
 
-       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 = 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 = VK_NULL_HANDLE;
-       inf.clipped = VK_TRUE;
-
-       if(vkCreateSwapchainKHR(vk_device, &inf, 0, &sc) != 0) {
-               return 0;
+       if(vkGetPhysicalDeviceSurfaceFormatsKHR(vk_physical,
+                                               vk_surface, &fcount, 0) != VK_SUCCESS) {
+               fprintf(stderr, "Failed to get format count for physical device.\n");
+               return false;
        }
-       return sc;
-}
-
-VkImage *vku_get_swapchain_images(VkSwapchainKHR sc, int *count)
-{
-       uint32_t nimg;
-       VkImage *images;
-
-       if(vkGetSwapchainImagesKHR(vk_device, sc, &nimg, 0) != 0) {
-               return 0;
+       if(fcount == 0) {
+               fprintf(stderr, "No color formats were found.\n");
+               return false;
        }
-       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);
+       VkSurfaceFormatKHR *formats = new VkSurfaceFormatKHR[fcount];
+       if(vkGetPhysicalDeviceSurfaceFormatsKHR(vk_physical, vk_surface,
+                                               &fcount, formats) != VK_SUCCESS) {
+               delete [] formats;
+               fprintf(stderr, "Failed to get surface formats.\n");
+               return false;
+       }
 
-               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;
+       *sformat = formats[0];
 
-               if(vkCreateImageView(vk_device, &inf, 0, iviews) != 0) {
-                       fprintf(stderr, "Failed to create image views.\n");
-                       delete iviews;
-                       return 0;
-               }
+       if((fcount == 1) && (formats[0].format == VK_FORMAT_UNDEFINED)) {
+               sformat->format = VK_FORMAT_B8G8R8_UNORM;
        }
 
-       return iviews;
+       delete [] formats;
+       return true;
 }
 
+
 int vku_get_next_image(VkSwapchainKHR sc)
 {
        uint32_t next;
@@ -470,89 +395,6 @@ void vku_present(VkSwapchainKHR sc, int img_idx)
        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)
 {
        struct vku_buffer *buf;
@@ -570,16 +412,34 @@ struct vku_buffer *vku_create_buffer(int sz, unsigned int usage)
                fprintf(stderr, "failed to create %d byte buffer (usage: %x)\n", sz, usage);
                return 0;
        }
-       // TODO back with memory
+
+       VkMemoryRequirements mr;
+       vkGetBufferMemoryRequirements(vk_device, buf->buf, &mr);
+
+       DevMemBlock block;
+       if(!vku_allocate(mr.size, &block))
+               return 0;
+
+       buf->mem_pool = block.dev_mem;
+
        return buf;
 }
 
 void vku_destroy_buffer(struct vku_buffer *buf)
 {
-       if(buf) {
-               vkDestroyBuffer(vk_device, buf->buf, 0);
-               delete buf;
+}
+
+bool vku_update_buffer(vku_buffer *buf, int size, void *data)
+{
+       uint8_t *pdata;
+       if(vkMapMemory(vk_device, buf->mem_pool, 0, size, 0, (void **)&pdata) != VK_SUCCESS) {
+               fprintf(stderr, "Failed to map memory.\n");
+               return false;
        }
+       memcpy(pdata, data, size);
+       vkUnmapMemory(vk_device, buf->mem_pool);
+
+       return true;
 }
 
 void vku_cmd_copybuf(VkCommandBuffer cmdbuf, VkBuffer dest, int doffs,
@@ -658,89 +518,6 @@ 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)
 {
@@ -838,3 +615,112 @@ static const char *get_mem_size_str(long sz)
        sprintf(str, "%ld.%ld %s", sz / 10, sz % 10, unitstr[uidx]);
        return str;
 }
+
+vku_descriptor *vku_create_descriptor(VkDescriptorType type,
+                                      VkFlags stage, int binding_point,
+                                      int size, int num_desc)
+{
+       vku_descriptor *desc = new vku_descriptor;
+
+       desc->type = type;
+       desc->size = size;
+       desc->stage_flags = stage;
+       desc->binding_point = binding_point;
+
+       VkDescriptorSetLayoutBinding dslb;
+       memset(&dslb, 0, sizeof dslb);
+
+       dslb.binding = binding_point;
+       dslb.descriptorType = type;
+       dslb.descriptorCount = num_desc;
+       dslb.stageFlags = stage;
+
+       VkDescriptorSetLayoutCreateInfo dslinf;
+       memset(&dslinf, 0, sizeof dslinf);
+
+       dslinf.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
+       dslinf.bindingCount = 1;
+       dslinf.pBindings = &dslb;
+
+       if(vkCreateDescriptorSetLayout(vk_device, &dslinf, 0, &desc->layout) != VK_SUCCESS) {
+               fprintf(stderr, "Failed to create vku_descriptor.\n");
+               return 0;
+       }
+
+       return desc;
+}
+
+void vku_destroy_descriptor(vku_descriptor *desc)
+{
+       vkDestroyDescriptorSetLayout(vk_device, desc->layout, 0);
+       delete desc;
+}
+
+bool vku_create_descriptor_pool(vku_descriptor **descriptors, int num_desc)
+{
+       if(vk_dpool)
+               vkDestroyDescriptorPool(vk_device, vk_dpool, 0);
+
+       VkDescriptorPoolCreateInfo dpinf;
+       memset(&dpinf, 0, sizeof dpinf);
+       dpinf.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
+       dpinf.maxSets = 1;
+
+       dpinf.poolSizeCount = num_desc;
+
+       std::vector<VkDescriptorPoolSize> sizes;
+       for(int i=0; i<num_desc; i++) {
+               VkDescriptorPoolSize psz;
+               psz.type = descriptors[i]->type;
+               psz.descriptorCount = 1;
+               sizes.push_back(psz);
+       }
+
+       dpinf.pPoolSizes = sizes.data();
+
+       if(vkCreateDescriptorPool(vk_device, &dpinf, 0, &vk_dpool) != VK_SUCCESS) {
+               fprintf(stderr, "Failed to create descriptor pool.\n");
+               return false;
+       }
+
+       return true;
+}
+
+void vku_destroy_descriptor_pool()
+{
+       vkDestroyDescriptorPool(vk_device, vk_dpool, 0);
+}
+
+bool vku_allocate_descriptor_sets(vku_descriptor **desc, int num_desc, VkDescriptorSet set)
+{
+       VkDescriptorSetAllocateInfo dainf;
+       memset(&dainf, 0, sizeof dainf);
+
+       dainf.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
+       dainf.descriptorPool = vk_dpool;
+       dainf.descriptorSetCount = num_desc;
+
+       std::vector<VkDescriptorSetLayout> layouts;
+       for(int i=0; i<num_desc; i++) {
+               layouts.push_back(desc[i]->layout);
+       }
+
+       dainf.pSetLayouts = layouts.data();
+
+       if(vkAllocateDescriptorSets(vk_device, &dainf, &set) != VK_SUCCESS) {
+               fprintf(stderr, "Failed to allocate descriptor sets.\n");
+               return false;
+       }
+       return true;
+}
+
+void vku_free_descriptor_sets(VkDescriptorSet *sets, int num)
+{
+       vkFreeDescriptorSets(vk_device, vk_dpool, num, sets);
+}
+
+bool vku_update_descriptor_sets(VkDescriptorSet *sets, int num_sets)
+{
+//     std::vector
+       return true;
+}