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vulkan.c
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vulkan.c
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/*
* Copyright © 2019 nyorain
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Author: nyorain <nyorain@gmail.com>
*/
#include "kms-quads.h"
#include <vulkan/vulkan.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <math.h>
#include <vulkan.frag.h>
#include <vulkan.vert.h>
// This corresponds to the XRGB drm format.
// The egl format hardcodes this format so we can probably too.
// It's guaranteed to be supported by the vulkan spec for everything
// we need. SRGB is the correct choice here, as always. You'd see
// that when rendering a texture.
static const VkFormat format = VK_FORMAT_B8G8R8A8_SRGB;
struct vk_device {
VkInstance instance;
VkDebugUtilsMessengerEXT messenger;
// whether the required extensions for explicit fencing are supported
bool explicit_fencing;
struct {
PFN_vkCreateDebugUtilsMessengerEXT createDebugUtilsMessengerEXT;
PFN_vkDestroyDebugUtilsMessengerEXT destroyDebugUtilsMessengerEXT;
PFN_vkGetMemoryFdPropertiesKHR getMemoryFdPropertiesKHR;
PFN_vkGetSemaphoreFdKHR getSemaphoreFdKHR;
PFN_vkImportSemaphoreFdKHR importSemaphoreFdKHR;
} api;
VkPhysicalDevice phdev;
VkDevice dev;
uint32_t queue_family;
VkQueue queue;
// pipeline
VkDescriptorSetLayout ds_layout;
VkRenderPass rp;
VkPipelineLayout pipe_layout;
VkPipeline pipe;
VkCommandPool command_pool;
VkDescriptorPool ds_pool;
};
struct vk_image {
struct buffer buffer;
VkDeviceMemory memories[4]; // worst case: 4 planes, 4 memory objects
VkImage image;
VkImageView image_view;
VkCommandBuffer cb;
VkFramebuffer fb;
bool first;
VkBuffer ubo;
VkDeviceMemory ubo_mem;
void *ubo_map;
VkDescriptorSet ds;
// We have to use a semaphore here since we want to "wait for it
// on the device" (i.e. only start rendering when the semaphore
// is signaled) and that isn't possible with a fence.
VkSemaphore buffer_semaphore; // signaled by kernal when image can be reused
// vulkan can signal a semaphore and a fence when a command buffer
// has completed, so we can use either here without any significant
// difference (the exporting semantics are the same for both).
VkSemaphore render_semaphore; // signaled by vulkan when rendering finishes
// We don't need this theoretically. But the validation layers
// are happy if we signal them via this fence that execution
// has finished.
VkFence render_fence; // signaled by vulkan when rendering finishes
};
// #define vk_error(res, fmt, ...)
#define vk_error(res, fmt) error(fmt ": %s (%d)\n", vulkan_strerror(res), res)
// Returns a VkResult value as string.
static const char *vulkan_strerror(VkResult err) {
#define ERR_STR(r) case VK_ ##r: return #r
switch (err) {
ERR_STR(SUCCESS);
ERR_STR(NOT_READY);
ERR_STR(TIMEOUT);
ERR_STR(EVENT_SET);
ERR_STR(EVENT_RESET);
ERR_STR(INCOMPLETE);
ERR_STR(SUBOPTIMAL_KHR);
ERR_STR(ERROR_OUT_OF_HOST_MEMORY);
ERR_STR(ERROR_OUT_OF_DEVICE_MEMORY);
ERR_STR(ERROR_INITIALIZATION_FAILED);
ERR_STR(ERROR_DEVICE_LOST);
ERR_STR(ERROR_MEMORY_MAP_FAILED);
ERR_STR(ERROR_LAYER_NOT_PRESENT);
ERR_STR(ERROR_EXTENSION_NOT_PRESENT);
ERR_STR(ERROR_FEATURE_NOT_PRESENT);
ERR_STR(ERROR_INCOMPATIBLE_DRIVER);
ERR_STR(ERROR_TOO_MANY_OBJECTS);
ERR_STR(ERROR_FORMAT_NOT_SUPPORTED);
ERR_STR(ERROR_SURFACE_LOST_KHR);
ERR_STR(ERROR_NATIVE_WINDOW_IN_USE_KHR);
ERR_STR(ERROR_OUT_OF_DATE_KHR);
ERR_STR(ERROR_FRAGMENTED_POOL);
ERR_STR(ERROR_INCOMPATIBLE_DISPLAY_KHR);
ERR_STR(ERROR_VALIDATION_FAILED_EXT);
ERR_STR(ERROR_INVALID_EXTERNAL_HANDLE);
ERR_STR(ERROR_OUT_OF_POOL_MEMORY);
ERR_STR(ERROR_INVALID_DRM_FORMAT_MODIFIER_PLANE_LAYOUT_EXT);
default:
return "<unknown>";
}
#undef ERR_STR
}
static VkImageAspectFlagBits mem_plane_ascpect(unsigned i)
{
switch(i) {
case 0: return VK_IMAGE_ASPECT_MEMORY_PLANE_0_BIT_EXT;
case 1: return VK_IMAGE_ASPECT_MEMORY_PLANE_1_BIT_EXT;
case 2: return VK_IMAGE_ASPECT_MEMORY_PLANE_2_BIT_EXT;
case 3: return VK_IMAGE_ASPECT_MEMORY_PLANE_3_BIT_EXT;
default: assert(false); // unreachable
}
}
int find_mem_type(VkPhysicalDevice phdev,
VkMemoryPropertyFlags flags, uint32_t req_bits)
{
VkPhysicalDeviceMemoryProperties props;
vkGetPhysicalDeviceMemoryProperties(phdev, &props);
for (unsigned i = 0u; i < props.memoryTypeCount; ++i) {
if (req_bits & (1 << i)) {
if ((props.memoryTypes[i].propertyFlags & flags) == flags) {
return i;
}
}
}
return -1;
}
static bool has_extension(const VkExtensionProperties *avail,
uint32_t availc, const char *req)
{
// check if all required extensions are supported
for (size_t j = 0; j < availc; ++j) {
if (!strcmp(avail[j].extensionName, req)) {
return true;
}
}
return false;
}
static VkBool32 debug_callback(VkDebugUtilsMessageSeverityFlagBitsEXT severity,
VkDebugUtilsMessageTypeFlagsEXT type,
const VkDebugUtilsMessengerCallbackDataEXT *debug_data,
void *data) {
((void) data);
((void) type);
// we ignore some of the non-helpful warnings
// static const char *const ignored[] = {};
// if (debug_data->pMessageIdName) {
// for (unsigned i = 0; i < sizeof(ignored) / sizeof(ignored[0]); ++i) {
// if (!strcmp(debug_data->pMessageIdName, ignored[i])) {
// return false;
// }
// }
// }
const char* importance = "UNKNOWN";
switch(severity) {
case VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT:
importance = "ERROR";
break;
case VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT:
importance = "WARNING";
break;
case VK_DEBUG_UTILS_MESSAGE_SEVERITY_INFO_BIT_EXT:
importance = "INFO";
break;
default:
break;
}
debug("%s: %s (%s, %d)\n", importance, debug_data->pMessage,
debug_data->pMessageIdName, debug_data->messageIdNumber);
if (debug_data->queueLabelCount > 0) {
const char *name = debug_data->pQueueLabels[0].pLabelName;
if (name) {
debug(" last queue label '%s'\n", name);
}
}
if (debug_data->cmdBufLabelCount > 0) {
const char *name = debug_data->pCmdBufLabels[0].pLabelName;
if (name) {
debug(" last cmdbuf label '%s'\n", name);
}
}
for (unsigned i = 0; i < debug_data->objectCount; ++i) {
if (debug_data->pObjects[i].pObjectName) {
debug(" involving '%s'\n", debug_data->pMessage);
}
}
// Returning true not allowed by spec but helpful for debugging
// makes function that caused the error return validation_failed
// error which we can detect
// return true;
return false;
}
// Returns whether the given drm device pci info matches the given physical
// device. Will write/realloc the given extensions count and data of
// the queried physical device.
bool match(drmPciBusInfoPtr pci_bus_info, VkPhysicalDevice phdev,
uint32_t *extc, VkExtensionProperties **exts)
{
VkResult res;
res = vkEnumerateDeviceExtensionProperties(phdev, NULL,
extc, NULL);
if ((res != VK_SUCCESS) || (*extc == 0)) {
*extc = 0;
vk_error(res, "Could not enumerate device extensions (1)");
return false;
}
*exts = realloc(*exts, sizeof(**exts) * *extc);
res = vkEnumerateDeviceExtensionProperties(phdev, NULL,
extc, *exts);
if (res != VK_SUCCESS) {
vk_error(res, "Could not enumerate device extensions (2)");
return false;
}
if (!has_extension(*exts, *extc, VK_EXT_PCI_BUS_INFO_EXTENSION_NAME)) {
error("Physical device has not support for VK_EXT_pci_bus_info\n");
return false;
}
VkPhysicalDevicePCIBusInfoPropertiesEXT pci_props = {0};
pci_props.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PCI_BUS_INFO_PROPERTIES_EXT;
VkPhysicalDeviceProperties2 phdev_props = {0};
phdev_props.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2;
phdev_props.pNext = &pci_props;
vkGetPhysicalDeviceProperties2(phdev, &phdev_props);
bool match = pci_props.pciBus == pci_bus_info->bus &&
pci_props.pciDevice == pci_bus_info->dev &&
pci_props.pciDomain == pci_bus_info->domain &&
pci_props.pciFunction == pci_bus_info->func;
VkPhysicalDeviceProperties *props = &phdev_props.properties;
uint32_t vv_major = (props->apiVersion >> 22);
uint32_t vv_minor = (props->apiVersion >> 12) & 0x3ff;
uint32_t vv_patch = (props->apiVersion) & 0xfff;
uint32_t dv_major = (props->driverVersion >> 22);
uint32_t dv_minor = (props->driverVersion >> 12) & 0x3ff;
uint32_t dv_patch = (props->driverVersion) & 0xfff;
const char* dev_type = "unknown";
switch(props->deviceType) {
case VK_PHYSICAL_DEVICE_TYPE_INTEGRATED_GPU:
dev_type = "integrated";
break;
case VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU:
dev_type = "discrete";
break;
case VK_PHYSICAL_DEVICE_TYPE_CPU:
dev_type = "cpu";
break;
case VK_PHYSICAL_DEVICE_TYPE_VIRTUAL_GPU:
dev_type = "gpu";
break;
default:
break;
}
debug("Vulkan device: '%s'\n", props->deviceName);
debug(" Device type: '%s'\n", dev_type);
debug(" Supported API version: %u.%u.%u\n", vv_major, vv_minor, vv_patch);
debug(" Driver version: %u.%u.%u\n", dv_major, dv_minor, dv_patch);
debug(" match: %d\n", (int) match);
return match;
}
void vk_device_destroy(struct vk_device *device)
{
if (device->pipe) {
vkDestroyPipeline(device->dev, device->pipe, NULL);
}
if (device->rp) {
vkDestroyRenderPass(device->dev, device->rp, NULL);
}
if (device->pipe_layout) {
vkDestroyPipelineLayout(device->dev, device->pipe_layout, NULL);
}
if (device->command_pool) {
vkDestroyCommandPool(device->dev, device->command_pool, NULL);
}
if (device->ds_layout) {
vkDestroyDescriptorSetLayout(device->dev, device->ds_layout, NULL);
}
if (device->ds_pool) {
vkDestroyDescriptorPool(device->dev, device->ds_pool, NULL);
}
if (device->dev) {
vkDestroyDevice(device->dev, NULL);
}
if (device->messenger && device->api.destroyDebugUtilsMessengerEXT) {
device->api.destroyDebugUtilsMessengerEXT(device->instance,
device->messenger, NULL);
}
if (device->instance) {
vkDestroyInstance(device->instance, NULL);
}
free(device);
}
static bool init_pipeline(struct vk_device *dev)
{
// render pass
// We don't care about previous contents of the image since
// we always render the full image. For incremental presentation you
// have to use LOAD_OP_STORE and a valid image layout.
VkAttachmentDescription attachment = {0};
attachment.format = format;
attachment.samples = VK_SAMPLE_COUNT_1_BIT;
attachment.loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
// attachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
attachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
attachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
attachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
attachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
// can basically be anything since we have to manually transition
// the image afterwards anyways (see depdency reasoning below)
attachment.finalLayout = VK_IMAGE_LAYOUT_GENERAL;
VkAttachmentReference color_ref = {0};
color_ref.attachment = 0u;
color_ref.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
VkSubpassDescription subpass = {0};
subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
subpass.colorAttachmentCount = 1;
subpass.pColorAttachments = &color_ref;
// Note how we don't specify any (external) subpass dependencies.
// The transfer of an image to an external queue (i.e. transfer logical
// ownership of the image from the vulkan driver to drm) can't be represented
// as a subpass dependency, so we have to transition the image
// after and before a renderpass manually anyways.
VkRenderPassCreateInfo rp_info = {0};
rp_info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
rp_info.attachmentCount = 1;
rp_info.pAttachments = &attachment;
rp_info.subpassCount = 1;
rp_info.pSubpasses = &subpass;
VkResult res = vkCreateRenderPass(dev->dev, &rp_info, NULL, &dev->rp);
if (res != VK_SUCCESS) {
vk_error(res, "vkCreateRenderPass");
return false;
}
// pipeline layout
VkDescriptorSetLayoutBinding binding = {0};
binding.binding = 0;
binding.descriptorCount = 1;
binding.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
binding.stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT;
VkDescriptorSetLayoutCreateInfo dli = {0};
dli.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
dli.bindingCount = 1u;
dli.pBindings = &binding;
res = vkCreateDescriptorSetLayout(dev->dev, &dli, NULL, &dev->ds_layout);
if (res != VK_SUCCESS) {
vk_error(res, "vkCreateDescriptorSetLayout");
return false;
}
VkPipelineLayoutCreateInfo pli = {0};
pli.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
pli.setLayoutCount = 1;
pli.pSetLayouts = &dev->ds_layout;
res = vkCreatePipelineLayout(dev->dev, &pli, NULL, &dev->pipe_layout);
if (res != VK_SUCCESS) {
vk_error(res, "vkCreatePipelineLayout");
return false;
}
// pipeline
VkShaderModule vert_module;
VkShaderModule frag_module;
VkShaderModuleCreateInfo si = {0};
si.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
si.codeSize = sizeof(vulkan_vert_data);
si.pCode = vulkan_vert_data;
res = vkCreateShaderModule(dev->dev, &si, NULL, &vert_module);
if (res != VK_SUCCESS) {
vk_error(res, "Failed to create vertex shader module");
return false;
}
si.codeSize = sizeof(vulkan_frag_data);
si.pCode = vulkan_frag_data;
res = vkCreateShaderModule(dev->dev, &si, NULL, &frag_module);
if (res != VK_SUCCESS) {
vk_error(res, "Failed to create fragment shader module");
vkDestroyShaderModule(dev->dev, vert_module, NULL);
return false;
}
VkPipelineShaderStageCreateInfo pipe_stages[2] = {{
VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
NULL, 0, VK_SHADER_STAGE_VERTEX_BIT, vert_module, "main", NULL
}, {
VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO,
NULL, 0, VK_SHADER_STAGE_FRAGMENT_BIT, frag_module, "main", NULL
}
};
// info
VkPipelineInputAssemblyStateCreateInfo assembly = {0};
assembly.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
assembly.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_FAN;
VkPipelineRasterizationStateCreateInfo rasterization = {0};
rasterization.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
rasterization.polygonMode = VK_POLYGON_MODE_FILL;
rasterization.cullMode = VK_CULL_MODE_NONE;
rasterization.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
rasterization.lineWidth = 1.f;
VkPipelineColorBlendAttachmentState blend_attachment = {0};
blend_attachment.blendEnable = false;
blend_attachment.colorWriteMask =
VK_COLOR_COMPONENT_R_BIT |
VK_COLOR_COMPONENT_G_BIT |
VK_COLOR_COMPONENT_B_BIT;
VkPipelineColorBlendStateCreateInfo blend = {0};
blend.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
blend.attachmentCount = 1;
blend.pAttachments = &blend_attachment;
VkPipelineMultisampleStateCreateInfo multisample = {0};
multisample.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
multisample.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
VkPipelineViewportStateCreateInfo viewport = {0};
viewport.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
viewport.viewportCount = 1;
viewport.scissorCount = 1;
VkDynamicState dynStates[2] = {
VK_DYNAMIC_STATE_VIEWPORT,
VK_DYNAMIC_STATE_SCISSOR,
};
VkPipelineDynamicStateCreateInfo dynamic = {0};
dynamic.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO;
dynamic.pDynamicStates = dynStates;
dynamic.dynamicStateCount = 2;
VkPipelineVertexInputStateCreateInfo vertex = {0};
vertex.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
VkGraphicsPipelineCreateInfo pipe_info = {0};
pipe_info.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
pipe_info.layout = dev->pipe_layout;
pipe_info.renderPass = dev->rp;
pipe_info.subpass = 0;
pipe_info.stageCount = 2;
pipe_info.pStages = pipe_stages;
pipe_info.pInputAssemblyState = &assembly;
pipe_info.pRasterizationState = &rasterization;
pipe_info.pColorBlendState = &blend;
pipe_info.pMultisampleState = &multisample;
pipe_info.pViewportState = &viewport;
pipe_info.pDynamicState = &dynamic;
pipe_info.pVertexInputState = &vertex;
// could use a cache here for faster loading
VkPipelineCache cache = VK_NULL_HANDLE;
res = vkCreateGraphicsPipelines(dev->dev, cache, 1, &pipe_info,
NULL, &dev->pipe);
vkDestroyShaderModule(dev->dev, vert_module, NULL);
vkDestroyShaderModule(dev->dev, frag_module, NULL);
if (res != VK_SUCCESS) {
error("failed to create vulkan pipeline: %d\n", res);
return false;
}
return true;
}
struct vk_device *vk_device_create(struct device *device)
{
// check for drm device support
// vulkan requires modifier support to import dma bufs
if (!device->fb_modifiers) {
debug("Can't use vulkan since drm doesn't support modifiers\n");
return NULL;
}
// query extension support
uint32_t avail_extc = 0;
VkResult res;
res = vkEnumerateInstanceExtensionProperties(NULL, &avail_extc, NULL);
if ((res != VK_SUCCESS) || (avail_extc == 0)) {
vk_error(res, "Could not enumerate instance extensions (1)");
return NULL;
}
VkExtensionProperties *avail_exts = calloc(avail_extc, sizeof(*avail_exts));
res = vkEnumerateInstanceExtensionProperties(NULL, &avail_extc, avail_exts);
if (res != VK_SUCCESS) {
free(avail_exts);
vk_error(res, "Could not enumerate instance extensions (2)");
return NULL;
}
for (size_t j = 0; j < avail_extc; ++j) {
debug("Vulkan Instance extensions %s\n", avail_exts[j].extensionName);
}
struct vk_device *vk_dev = calloc(1, sizeof(*vk_dev));
assert(vk_dev);
// create instance
const char *req = VK_EXT_DEBUG_UTILS_EXTENSION_NAME;
const char** enable_exts = NULL;
uint32_t enable_extc = 0;
if (has_extension(avail_exts, avail_extc, req)) {
enable_exts = &req;
enable_extc++;
}
free(avail_exts);
VkApplicationInfo application_info = {0};
application_info.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
application_info.pApplicationName = "kms-vulkan";
application_info.applicationVersion = 1;
application_info.pEngineName = "kms-vulkan";
application_info.engineVersion = 1;
// will only run on the latest drivers anyways so we can require
// vulkan 1.1 without problems
application_info.apiVersion = VK_MAKE_VERSION(1,1,0);
// layer reports error in api usage to debug callback
const char *layers[] = {
"VK_LAYER_KHRONOS_validation",
};
VkInstanceCreateInfo instance_info = {0};
instance_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
instance_info.pApplicationInfo = &application_info;
instance_info.enabledExtensionCount = enable_extc;
instance_info.ppEnabledExtensionNames = enable_exts;
instance_info.enabledLayerCount = ARRAY_LENGTH(layers);
instance_info.ppEnabledLayerNames = layers;
res = vkCreateInstance(&instance_info, NULL, &vk_dev->instance);
if (res != VK_SUCCESS) {
vk_error(res, "Could not create instance");
goto error;
}
// debug callback
if (enable_extc) {
vk_dev->api.createDebugUtilsMessengerEXT =
(PFN_vkCreateDebugUtilsMessengerEXT) vkGetInstanceProcAddr(
vk_dev->instance, "vkCreateDebugUtilsMessengerEXT");
vk_dev->api.destroyDebugUtilsMessengerEXT =
(PFN_vkDestroyDebugUtilsMessengerEXT) vkGetInstanceProcAddr(
vk_dev->instance, "vkDestroyDebugUtilsMessengerEXT");
if (vk_dev->api.createDebugUtilsMessengerEXT) {
VkDebugUtilsMessageSeverityFlagsEXT severity =
// VK_DEBUG_UTILS_MESSAGE_SEVERITY_INFO_BIT_EXT |
VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT |
VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT;
VkDebugUtilsMessageTypeFlagsEXT types =
// VK_DEBUG_UTILS_MESSAGE_TYPE_GENERAL_BIT_EXT |
VK_DEBUG_UTILS_MESSAGE_TYPE_VALIDATION_BIT_EXT |
VK_DEBUG_UTILS_MESSAGE_TYPE_PERFORMANCE_BIT_EXT;
VkDebugUtilsMessengerCreateInfoEXT debug_info = {0};
debug_info.sType = VK_STRUCTURE_TYPE_DEBUG_UTILS_MESSENGER_CREATE_INFO_EXT;
debug_info.messageSeverity = severity;
debug_info.messageType = types;
debug_info.pfnUserCallback = &debug_callback;
vk_dev->api.createDebugUtilsMessengerEXT(vk_dev->instance,
&debug_info, NULL, &vk_dev->messenger);
} else {
error("vkCreateDebugUtilsMessengerEXT not found\n");
}
}
// get pci information of device
drmDevicePtr drm_dev;
drmGetDevice(device->kms_fd, &drm_dev);
if(drm_dev->bustype != DRM_BUS_PCI) {
error("Given device isn't a pci device\n");
goto error;
}
// enumerate physical devices to find the one matching the given
// gbm device.
uint32_t num_phdevs;
res = vkEnumeratePhysicalDevices(vk_dev->instance, &num_phdevs, NULL);
if (res != VK_SUCCESS || num_phdevs == 0) {
vk_error(res, "Could not retrieve physical device");
goto error;
}
VkPhysicalDevice *phdevs = calloc(num_phdevs, sizeof(*phdevs));
res = vkEnumeratePhysicalDevices(vk_dev->instance, &num_phdevs, phdevs);
if (res != VK_SUCCESS || num_phdevs == 0) {
free(phdevs);
vk_error(res, "Could not retrieve physical device");
goto error;
}
drmPciBusInfoPtr pci = drm_dev->businfo.pci;
debug("PCI bus: %04x:%02x:%02x.%x\n", pci->domain,
pci->bus, pci->dev, pci->func);
VkExtensionProperties *phdev_exts = NULL;
uint32_t phdev_extc = 0;
VkPhysicalDevice phdev = VK_NULL_HANDLE;
for (unsigned i = 0u; i < num_phdevs; ++i) {
VkPhysicalDevice phdevi = phdevs[i];
if (match(drm_dev->businfo.pci, phdevi, &phdev_extc, &phdev_exts)) {
phdev = phdevi;
break;
}
}
free(phdevs);
if (phdev == VK_NULL_HANDLE) {
error("Can't find vulkan physical device for drm dev\n");
goto error;
}
for (size_t j = 0; j < phdev_extc; ++j) {
debug("Vulkan Device extensions %s\n", phdev_exts[j].extensionName);
}
vk_dev->phdev = phdev;
// query extensions
const char* dev_exts[8];
uint32_t dev_extc = 0;
const char* mem_exts[] = {
VK_KHR_EXTERNAL_MEMORY_FD_EXTENSION_NAME,
VK_EXT_EXTERNAL_MEMORY_DMA_BUF_EXTENSION_NAME,
VK_EXT_IMAGE_DRM_FORMAT_MODIFIER_EXTENSION_NAME,
VK_KHR_IMAGE_FORMAT_LIST_EXTENSION_NAME, // required by drm ext
// NOTE: strictly speaking this extension is required to
// correctly transfer image ownership but since no mesa
// driver implements its yet (no even an updated patch for that),
// let's see how far we get without it
// VK_EXT_QUEUE_FAMILY_FOREIGN_EXTENSION_NAME,
};
for (unsigned i = 0u; i < ARRAY_LENGTH(mem_exts); ++i) {
if (!has_extension(phdev_exts, phdev_extc, mem_exts[i])) {
error("Physical device doesn't supported required extension: %s\n",
mem_exts[i]);
goto error;
} else {
dev_exts[dev_extc++] = mem_exts[i];
}
}
// explicit fencing extensions
// we currently only import/export semaphores
vk_dev->explicit_fencing = true;
const char* sync_exts[] = {
// VK_KHR_EXTERNAL_FENCE_FD_EXTENSION_NAME,
VK_KHR_EXTERNAL_SEMAPHORE_FD_EXTENSION_NAME,
};
for (unsigned i = 0u; i < ARRAY_LENGTH(sync_exts); ++i) {
if (!has_extension(phdev_exts, phdev_extc, sync_exts[i])) {
error("Physical device doesn't supported extension %s, which "
"is required for explicit fencing. Will disable explicit "
"fencing but that is a suboptimal workaround",
dev_exts[i]);
vk_dev->explicit_fencing = false;
break;
} else {
dev_exts[dev_extc++] = sync_exts[i];
}
}
// create device
// queue families
uint32_t qfam_count;
vkGetPhysicalDeviceQueueFamilyProperties(phdev, &qfam_count, NULL);
VkQueueFamilyProperties *qprops = calloc(sizeof(*qprops), qfam_count);
vkGetPhysicalDeviceQueueFamilyProperties(phdev, &qfam_count, qprops);
uint32_t qfam = 0xFFFFFFFFu; // graphics queue family
for (unsigned i = 0u; i < qfam_count; ++i) {
if (qprops[i].queueFlags & VK_QUEUE_GRAPHICS_BIT) {
qfam = i;
break;
}
}
// vulkan standard guarantees that the must be at least one graphics
// queue family
assert(qfam != 0xFFFFFFFFu);
vk_dev->queue_family = qfam;
// info
float prio = 1.f;
VkDeviceQueueCreateInfo qinfo = {0};
qinfo.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
qinfo.queueFamilyIndex = qfam;
qinfo.queueCount = 1;
qinfo.pQueuePriorities = &prio;
VkDeviceCreateInfo dev_info = {0};
dev_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
dev_info.queueCreateInfoCount = 1;
dev_info.pQueueCreateInfos = &qinfo;
dev_info.enabledExtensionCount = dev_extc;
dev_info.ppEnabledExtensionNames = dev_exts;
res = vkCreateDevice(phdev, &dev_info, NULL, &vk_dev->dev);
if (res != VK_SUCCESS){
vk_error(res, "Failed to create vulkan device");
goto error;
}
vkGetDeviceQueue(vk_dev->dev, vk_dev->queue_family, 0, &vk_dev->queue);
// command pool
VkCommandPoolCreateInfo cpi = {0};
cpi.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
cpi.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
cpi.queueFamilyIndex = vk_dev->queue_family;
res = vkCreateCommandPool(vk_dev->dev, &cpi, NULL, &vk_dev->command_pool);
if (res != VK_SUCCESS) {
vk_error(res, "vkCreateCommandPool");
goto error;
}
// descriptor pool
VkDescriptorPoolSize pool_size = {0};
pool_size.descriptorCount = BUFFER_QUEUE_DEPTH;
pool_size.type = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
VkDescriptorPoolCreateInfo dpi = {0};
dpi.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
dpi.maxSets = BUFFER_QUEUE_DEPTH;
dpi.poolSizeCount = 1u;
dpi.pPoolSizes = &pool_size;
res = vkCreateDescriptorPool(vk_dev->dev, &dpi, NULL, &vk_dev->ds_pool);
if (res != VK_SUCCESS) {
vk_error(res, "vkCreateDescriptorPool");
goto error;
}
if (vk_dev->explicit_fencing) {
// semaphore import/export support
// we import kms_fence_fd as semaphore and add that as wait semaphore
// to a render submission so that we only render a buffer when
// kms signals that it's finished with it.
// we alos export the semaphore for our render submission as sync_fd
// and pass that as render_fence_fd to the kernel, signaling
// that the buffer can only be used when that semaphore is signaled,
// i.e. we are finished with rendering and all barriers.
VkPhysicalDeviceExternalSemaphoreInfo esi = {0};
esi.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_EXTERNAL_SEMAPHORE_INFO;
esi.handleType = VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT;
VkExternalSemaphoreProperties esp = {0};
esp.sType = VK_STRUCTURE_TYPE_EXTERNAL_SEMAPHORE_PROPERTIES;
vkGetPhysicalDeviceExternalSemaphoreProperties(phdev, &esi, &esp);
if((esp.externalSemaphoreFeatures &
VK_EXTERNAL_SEMAPHORE_FEATURE_IMPORTABLE_BIT) == 0) {
error("Vulkan can't import sync_fd semaphores");
goto error;
}
vk_dev->api.getSemaphoreFdKHR = (PFN_vkGetSemaphoreFdKHR)
vkGetDeviceProcAddr(vk_dev->dev, "vkGetSemaphoreFdKHR");
if (!vk_dev->api.getSemaphoreFdKHR) {
error("Failed to retrieve vkGetSemaphoreFdKHR\n");
vk_dev->explicit_fencing = false;
}
vk_dev->api.importSemaphoreFdKHR = (PFN_vkImportSemaphoreFdKHR)
vkGetDeviceProcAddr(vk_dev->dev, "vkImportSemaphoreFdKHR");
if (!vk_dev->api.importSemaphoreFdKHR) {
error("Failed to retrieve vkImportSemaphoreFdKHR\n");
vk_dev->explicit_fencing = false;
}
if (!vk_dev->explicit_fencing) {
printf("Disabling explicit fencing since not all required "
"functions could be loaded. Suboptimal workaround\n");
}
}
vk_dev->api.getMemoryFdPropertiesKHR = (PFN_vkGetMemoryFdPropertiesKHR)
vkGetDeviceProcAddr(vk_dev->dev, "vkGetMemoryFdPropertiesKHR");
if (!vk_dev->api.getMemoryFdPropertiesKHR) {
error("Failed to retrieve required vkGetMemoryFdPropertiesKHR\n");
goto error;
}
// init renderpass and pipeline
if (!init_pipeline(vk_dev)) {
goto error;
}
device->vk_device = vk_dev;
return vk_dev;
error:
vk_device_destroy(vk_dev);
return NULL;
}
bool output_vulkan_setup(struct output *output)
{
struct vk_device *vk_dev = output->device->vk_device;
assert(vk_dev);
VkResult res;
// vulkan builds upon explicit fencing. The workaround with simply
// waiting until rendering has finished in case of no explicit
// fencing is suboptimal
if (!output->explicit_fencing) {
printf("Vulkan renderer: drm doesn't support explicit fencing "
"that means the renderer has to stall (bad)\n");
}
output->explicit_fencing &= vk_dev->explicit_fencing;
if (output->num_modifiers == 0) {
error("Output doesn't support any modifiers, vulkan requires modifiers");
return false;
}
// check format support
// we simply iterate over all the modifiers supported by drm (stored
// in output) and query with vulkan if the modifier can be used
// for rendering via vkGetPhysicalDeviceImageFormatProperties2.
// We are allowed to query it this way (even for modifiers the driver
// doesn't even know), the function will simply return format_not_supported
// when it doesn't support/know the modifier.
// - input -
VkPhysicalDeviceImageDrmFormatModifierInfoEXT modi = {0};
modi.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_IMAGE_DRM_FORMAT_MODIFIER_INFO_EXT;
VkPhysicalDeviceExternalImageFormatInfo efmti = {0};
efmti.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_EXTERNAL_IMAGE_FORMAT_INFO;
efmti.pNext = &modi;
efmti.handleType = VK_EXTERNAL_MEMORY_HANDLE_TYPE_DMA_BUF_BIT_EXT;
VkPhysicalDeviceImageFormatInfo2 fmti = {0};
fmti.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_IMAGE_FORMAT_INFO_2;
fmti.usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
fmti.type = VK_IMAGE_TYPE_2D;
fmti.format = format;
fmti.tiling = VK_IMAGE_TILING_DRM_FORMAT_MODIFIER_EXT;
fmti.pNext = &efmti;
// - output -
VkExternalImageFormatProperties efmtp = {0};
efmtp.sType = VK_STRUCTURE_TYPE_EXTERNAL_IMAGE_FORMAT_PROPERTIES;
VkImageFormatProperties2 ifmtp = {0};
ifmtp.sType = VK_STRUCTURE_TYPE_IMAGE_FORMAT_PROPERTIES_2;
ifmtp.pNext = &efmtp;
// supported modifiers
uint32_t smod_count = 0;
uint64_t *smods = calloc(output->num_modifiers, sizeof(*smods));
assert(smods);
for(unsigned i = 0u; i < output->num_modifiers; ++i) {
uint64_t mod = output->modifiers[i];
modi.drmFormatModifier = mod;
res = vkGetPhysicalDeviceImageFormatProperties2(vk_dev->phdev,
&fmti, &ifmtp);
if (res == VK_ERROR_FORMAT_NOT_SUPPORTED) {
continue;
} else if (res != VK_SUCCESS) {
vk_error(res, "vkGetPhysicalDeviceImageFormatProperties2");
return false;
}
// we need dmabufs with the given format and modifier to be importable
// otherwise we can't use the modifier
if ((efmtp.externalMemoryProperties.externalMemoryFeatures &
VK_EXTERNAL_MEMORY_FEATURE_IMPORTABLE_BIT) == 0) {
debug("KMS modifier %lu not supported by vulkan (2)\n", mod);
continue;
}
smods[smod_count++] = mod;
debug("Vulkan and KMS support modifier %lu\n", mod);
// we could check/store ifmtp.maxExtent but it should
// be enough. Otherwise the gpu is connected to an output
// it can't power on full resolution
}
if (smod_count == 0) {
error("No modifier supported by kms and vulkan");
return false;
}
free(output->modifiers);
output->num_modifiers = smod_count;
output->modifiers = smods;
return true;
}
struct buffer *buffer_vk_create(struct device *device, struct output *output)
{
struct vk_image *img = calloc(1, sizeof(*img));
struct vk_device *vk_dev = device->vk_device;
assert(vk_dev);
uint32_t num_planes;
int dma_buf_fds[4] = {-1, -1, -1, -1};
VkResult res;
// fill buffer info
img->first = true;
img->buffer.output = output;
img->buffer.render_fence_fd = -1;
img->buffer.kms_fence_fd = -1;
img->buffer.format = DRM_FORMAT_XRGB8888;
img->buffer.width = output->mode.hdisplay;
img->buffer.height = output->mode.vdisplay;
uint32_t width = img->buffer.width;
uint32_t height = img->buffer.height;
// create gbm bo with modifiers supported by output and vulkan
img->buffer.gbm.bo = gbm_bo_create_with_modifiers(device->gbm_device,
width, height, DRM_FORMAT_XRGB8888,
output->modifiers, output->num_modifiers);
if (!img->buffer.gbm.bo) {
error("failed to create %u x %u BO\n", output->mode.hdisplay,