1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
|
#include "vulkan_common.h"
namespace Donut::RHI
{
auto VulkanDevice::create_instance() -> bool
{
VkApplicationInfo app{ VK_STRUCTURE_TYPE_APPLICATION_INFO };
app.pApplicationName = "Donut"; app.apiVersion = VK_API_VERSION_1_2;
uint32_t glfwExtCount = 0;
const char** glfwExts = glfwGetRequiredInstanceExtensions(&glfwExtCount);
if (!glfwExts) { DONUT_ERROR("Vulkan RHI: GLFW reports no surface support"); return false; }
std::vector<const char*> exts(glfwExts, glfwExts + glfwExtCount);
exts.push_back(VK_KHR_PORTABILITY_ENUMERATION_EXTENSION_NAME);
exts.push_back(VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME);
std::vector<const char*> layers;
uint32_t layer_count = 0; vkEnumerateInstanceLayerProperties(&layer_count, nullptr);
std::vector<VkLayerProperties> avail(layer_count);
vkEnumerateInstanceLayerProperties(&layer_count, avail.data());
for (const auto& l : avail)
if (std::strcmp(l.layerName, "VK_LAYER_KHRONOS_validation") == 0)
layers.push_back("VK_LAYER_KHRONOS_validation");
VkInstanceCreateInfo ici{ VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO };
ici.flags = VK_INSTANCE_CREATE_ENUMERATE_PORTABILITY_BIT_KHR;
ici.pApplicationInfo = &app;
ici.enabledExtensionCount = (uint32_t)exts.size(); ici.ppEnabledExtensionNames = exts.data();
ici.enabledLayerCount = (uint32_t)layers.size(); ici.ppEnabledLayerNames = layers.data();
VkResult r = vkCreateInstance(&ici, nullptr, &m_instance);
if (r != VK_SUCCESS && !layers.empty())
{
DONUT_WARN("Vulkan RHI: validation layer unavailable, continuing without it");
ici.enabledLayerCount = 0; ici.ppEnabledLayerNames = nullptr;
r = vkCreateInstance(&ici, nullptr, &m_instance);
}
if (r != VK_SUCCESS) { DONUT_ERROR("Vulkan RHI: vkCreateInstance failed ({})", (int)r); return false; }
VKD_CHECK(glfwCreateWindowSurface(m_instance, m_window, nullptr, &m_surface));
DONUT_INFO("Vulkan RHI: instance + surface created (validation {})", layers.empty() ? "off" : "on");
return true;
}
auto VulkanDevice::pick_physical_and_device() -> bool
{
uint32_t count = 0; vkEnumeratePhysicalDevices(m_instance, &count, nullptr);
if (count == 0) { DONUT_ERROR("Vulkan RHI: no physical devices"); return false; }
std::vector<VkPhysicalDevice> devices(count);
vkEnumeratePhysicalDevices(m_instance, &count, devices.data());
m_physical = devices[0];
uint32_t q = 0; vkGetPhysicalDeviceQueueFamilyProperties(m_physical, &q, nullptr);
std::vector<VkQueueFamilyProperties> qfams(q);
vkGetPhysicalDeviceQueueFamilyProperties(m_physical, &q, qfams.data());
bool fg = false, fp = false;
for (uint32_t i = 0; i < q; ++i)
{
if (!fg && (qfams[i].queueFlags & VK_QUEUE_GRAPHICS_BIT)) { m_graphics_family = i; fg = true; }
VkBool32 present = VK_FALSE; vkGetPhysicalDeviceSurfaceSupportKHR(m_physical, i, m_surface, &present);
if (!fp && present) { m_present_family = i; fp = true; }
}
if (!fg || !fp) { DONUT_ERROR("Vulkan RHI: no graphics/present queue"); return false; }
std::vector<const char*> dev_exts = { VK_KHR_SWAPCHAIN_EXTENSION_NAME };
uint32_t dec = 0; vkEnumerateDeviceExtensionProperties(m_physical, nullptr, &dec, nullptr);
std::vector<VkExtensionProperties> dep(dec);
vkEnumerateDeviceExtensionProperties(m_physical, nullptr, &dec, dep.data());
for (const auto& e : dep)
if (std::strcmp(e.extensionName, "VK_KHR_portability_subset") == 0)
dev_exts.push_back("VK_KHR_portability_subset");
float priority = 1.0f;
std::vector<VkDeviceQueueCreateInfo> qcis;
uint32_t families[2] = { m_graphics_family, m_present_family };
for (uint32_t i = 0; i < (m_graphics_family == m_present_family ? 1u : 2u); ++i)
{
VkDeviceQueueCreateInfo qci{ VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO };
qci.queueFamilyIndex = families[i]; qci.queueCount = 1; qci.pQueuePriorities = &priority;
qcis.push_back(qci);
}
VkDeviceCreateInfo dci{ VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO };
dci.queueCreateInfoCount = (uint32_t)qcis.size(); dci.pQueueCreateInfos = qcis.data();
dci.enabledExtensionCount = (uint32_t)dev_exts.size(); dci.ppEnabledExtensionNames = dev_exts.data();
VKD_CHECK(vkCreateDevice(m_physical, &dci, nullptr, &m_device));
vkGetDeviceQueue(m_device, m_graphics_family, 0, &m_graphics_queue);
vkGetDeviceQueue(m_device, m_present_family, 0, &m_present_queue);
VkPhysicalDeviceProperties props{}; vkGetPhysicalDeviceProperties(m_physical, &props);
vkGetPhysicalDeviceMemoryProperties(m_physical, &m_mem_props);
m_gpu_name = props.deviceName;
DONUT_INFO("Vulkan RHI device: {}", m_gpu_name);
return true;
}
auto VulkanDevice::create_swapchain() -> bool
{
VkSurfaceCapabilitiesKHR caps{};
vkGetPhysicalDeviceSurfaceCapabilitiesKHR(m_physical, m_surface, &caps);
uint32_t fc = 0; vkGetPhysicalDeviceSurfaceFormatsKHR(m_physical, m_surface, &fc, nullptr);
std::vector<VkSurfaceFormatKHR> formats(fc);
vkGetPhysicalDeviceSurfaceFormatsKHR(m_physical, m_surface, &fc, formats.data());
VkSurfaceFormatKHR chosen = formats[0];
for (const auto& f : formats)
if (f.format == VK_FORMAT_B8G8R8A8_UNORM && f.colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR) chosen = f;
m_swapchain_format = chosen.format;
if (caps.currentExtent.width != UINT32_MAX) m_extent = caps.currentExtent;
else {
m_extent.width = std::clamp((uint32_t)m_width, caps.minImageExtent.width, caps.maxImageExtent.width);
m_extent.height = std::clamp((uint32_t)m_height, caps.minImageExtent.height, caps.maxImageExtent.height);
}
uint32_t image_count = caps.minImageCount + 1;
if (caps.maxImageCount > 0 && image_count > caps.maxImageCount) image_count = caps.maxImageCount;
VkSwapchainCreateInfoKHR sci{ VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR };
sci.surface = m_surface; sci.minImageCount = image_count;
sci.imageFormat = chosen.format; sci.imageColorSpace = chosen.colorSpace;
sci.imageExtent = m_extent; sci.imageArrayLayers = 1;
sci.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
sci.preTransform = caps.currentTransform; sci.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
// FIFO is always there (that's vsync). with vsync off we'd rather have
// IMMEDIATE (uncapped, might tear) then MAILBOX, if the surface is cool with it.
VkPresentModeKHR present_mode = VK_PRESENT_MODE_FIFO_KHR;
if (!m_vsync)
{
uint32_t pmc = 0; vkGetPhysicalDeviceSurfacePresentModesKHR(m_physical, m_surface, &pmc, nullptr);
std::vector<VkPresentModeKHR> modes(pmc);
vkGetPhysicalDeviceSurfacePresentModesKHR(m_physical, m_surface, &pmc, modes.data());
auto has = [&](VkPresentModeKHR m){ return std::find(modes.begin(), modes.end(), m) != modes.end(); };
if (has(VK_PRESENT_MODE_IMMEDIATE_KHR)) present_mode = VK_PRESENT_MODE_IMMEDIATE_KHR;
else if (has(VK_PRESENT_MODE_MAILBOX_KHR)) present_mode = VK_PRESENT_MODE_MAILBOX_KHR;
}
sci.presentMode = present_mode; sci.clipped = VK_TRUE;
uint32_t fam[2] = { m_graphics_family, m_present_family };
if (m_graphics_family != m_present_family)
{ sci.imageSharingMode = VK_SHARING_MODE_CONCURRENT; sci.queueFamilyIndexCount = 2; sci.pQueueFamilyIndices = fam; }
else sci.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
VKD_CHECK(vkCreateSwapchainKHR(m_device, &sci, nullptr, &m_swapchain));
uint32_t n = 0; vkGetSwapchainImagesKHR(m_device, m_swapchain, &n, nullptr);
m_images.resize(n); vkGetSwapchainImagesKHR(m_device, m_swapchain, &n, m_images.data());
return true;
}
auto VulkanDevice::create_image_views() -> bool
{
m_image_views.resize(m_images.size());
for (size_t i = 0; i < m_images.size(); ++i)
{
VkImageViewCreateInfo vci{ VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO };
vci.image = m_images[i]; vci.viewType = VK_IMAGE_VIEW_TYPE_2D; vci.format = m_swapchain_format;
vci.subresourceRange = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 };
VKD_CHECK(vkCreateImageView(m_device, &vci, nullptr, &m_image_views[i]));
}
return true;
}
// a render pass for one attachment signature, created once and cached.
// `present` targets (the swapchain) finish PRESENT_SRC and sync on the
// colour-output stage; `sampled` targets (off-screen) finish
// SHADER_READ_ONLY and round-trip through the fragment shader so the next
// pass can sample them. depth (VK_FORMAT_UNDEFINED = none) is optional.
auto VulkanDevice::get_render_pass(VkFormat color, VkFormat depth, bool present) -> VkRenderPass
{
uint64_t key = (uint64_t)(uint32_t)color
| ((uint64_t)(uint32_t)depth << 24)
| ((uint64_t)(present ? 1 : 0) << 48);
auto it = m_pass_cache.find(key);
if (it != m_pass_cache.end()) return it->second;
const bool has_depth = depth != VK_FORMAT_UNDEFINED;
VkAttachmentDescription atts[2]{};
atts[0].format = color; atts[0].samples = VK_SAMPLE_COUNT_1_BIT;
atts[0].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR; atts[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
atts[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE; atts[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
atts[0].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
atts[0].finalLayout = present ? VK_IMAGE_LAYOUT_PRESENT_SRC_KHR : VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
atts[1].format = depth; atts[1].samples = VK_SAMPLE_COUNT_1_BIT;
atts[1].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR; atts[1].storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
atts[1].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE; atts[1].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
atts[1].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED; atts[1].finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
VkAttachmentReference color_ref{ 0, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL };
VkAttachmentReference depth_ref{ 1, VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL };
VkSubpassDescription subpass{}; subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
subpass.colorAttachmentCount = 1; subpass.pColorAttachments = &color_ref;
if (has_depth) subpass.pDepthStencilAttachment = &depth_ref;
VkSubpassDependency deps[2]{};
uint32_t dep_count;
if (present)
{
deps[0].srcSubpass = VK_SUBPASS_EXTERNAL; deps[0].dstSubpass = 0;
deps[0].srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT | VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT;
deps[0].dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT | VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT;
deps[0].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT | VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
dep_count = 1;
}
else
{
deps[0].srcSubpass = VK_SUBPASS_EXTERNAL; deps[0].dstSubpass = 0;
deps[0].srcStageMask = VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT; deps[0].srcAccessMask = VK_ACCESS_SHADER_READ_BIT;
deps[0].dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT; deps[0].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
deps[1].srcSubpass = 0; deps[1].dstSubpass = VK_SUBPASS_EXTERNAL;
deps[1].srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT; deps[1].srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
deps[1].dstStageMask = VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT; deps[1].dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
dep_count = 2;
}
VkRenderPassCreateInfo rpci{ VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO };
rpci.attachmentCount = has_depth ? 2 : 1; rpci.pAttachments = atts;
rpci.subpassCount = 1; rpci.pSubpasses = &subpass;
rpci.dependencyCount = dep_count; rpci.pDependencies = deps;
VkRenderPass rp = VK_NULL_HANDLE;
if (vkCreateRenderPass(m_device, &rpci, nullptr, &rp) != VK_SUCCESS)
{ DONUT_ERROR("Vulkan RHI: render pass creation failed"); return VK_NULL_HANDLE; }
m_pass_cache[key] = rp;
return rp;
}
auto VulkanDevice::create_depth_and_framebuffers() -> bool
{
VkImageCreateInfo dici{ VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO };
dici.imageType = VK_IMAGE_TYPE_2D; dici.format = VK_FORMAT_D32_SFLOAT;
dici.extent = { m_extent.width, m_extent.height, 1 };
dici.mipLevels = 1; dici.arrayLayers = 1; dici.samples = VK_SAMPLE_COUNT_1_BIT;
dici.tiling = VK_IMAGE_TILING_OPTIMAL; dici.usage = VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
VKD_CHECK(vkCreateImage(m_device, &dici, nullptr, &m_depth_image));
VkMemoryRequirements dreq{}; vkGetImageMemoryRequirements(m_device, m_depth_image, &dreq);
VkMemoryAllocateInfo dai{ VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO };
dai.allocationSize = dreq.size; dai.memoryTypeIndex = find_memory_type(dreq.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
VKD_CHECK(vkAllocateMemory(m_device, &dai, nullptr, &m_depth_mem));
VKD_CHECK(vkBindImageMemory(m_device, m_depth_image, m_depth_mem, 0));
VkImageViewCreateInfo dvci{ VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO };
dvci.image = m_depth_image; dvci.viewType = VK_IMAGE_VIEW_TYPE_2D; dvci.format = VK_FORMAT_D32_SFLOAT;
dvci.subresourceRange = { VK_IMAGE_ASPECT_DEPTH_BIT, 0, 1, 0, 1 };
VKD_CHECK(vkCreateImageView(m_device, &dvci, nullptr, &m_depth_view));
m_framebuffers.resize(m_image_views.size());
for (size_t i = 0; i < m_image_views.size(); ++i)
{
VkImageView att[2] = { m_image_views[i], m_depth_view };
VkFramebufferCreateInfo fbci{ VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO };
fbci.renderPass = m_swapchain_rp; fbci.attachmentCount = 2; fbci.pAttachments = att;
fbci.width = m_extent.width; fbci.height = m_extent.height; fbci.layers = 1;
VKD_CHECK(vkCreateFramebuffer(m_device, &fbci, nullptr, &m_framebuffers[i]));
}
return true;
}
auto VulkanDevice::create_command_and_sync() -> bool
{
VkCommandPoolCreateInfo pci{ VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO };
pci.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT; pci.queueFamilyIndex = m_graphics_family;
VKD_CHECK(vkCreateCommandPool(m_device, &pci, nullptr, &m_command_pool));
m_command_buffers.resize(MAX_FRAMES_IN_FLIGHT);
VkCommandBufferAllocateInfo cbai{ VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO };
cbai.commandPool = m_command_pool; cbai.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY; cbai.commandBufferCount = MAX_FRAMES_IN_FLIGHT;
VKD_CHECK(vkAllocateCommandBuffers(m_device, &cbai, m_command_buffers.data()));
m_image_available.resize(MAX_FRAMES_IN_FLIGHT);
m_in_flight.resize(MAX_FRAMES_IN_FLIGHT);
m_render_finished.resize(m_images.size());
m_images_in_flight.assign(m_images.size(), VK_NULL_HANDLE);
VkSemaphoreCreateInfo sci{ VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO };
VkFenceCreateInfo fci{ VK_STRUCTURE_TYPE_FENCE_CREATE_INFO }; fci.flags = VK_FENCE_CREATE_SIGNALED_BIT;
for (int i = 0; i < MAX_FRAMES_IN_FLIGHT; ++i)
{ VKD_CHECK(vkCreateSemaphore(m_device, &sci, nullptr, &m_image_available[i])); VKD_CHECK(vkCreateFence(m_device, &fci, nullptr, &m_in_flight[i])); }
for (size_t i = 0; i < m_images.size(); ++i)
VKD_CHECK(vkCreateSemaphore(m_device, &sci, nullptr, &m_render_finished[i]));
m_frame_pools.resize(MAX_FRAMES_IN_FLIGHT);
VkDescriptorPoolSize sizes[2] = {
{ VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 512 },
{ VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 256 },
};
for (int i = 0; i < MAX_FRAMES_IN_FLIGHT; ++i)
{
VkDescriptorPoolCreateInfo dpci{ VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO };
dpci.maxSets = 256; dpci.poolSizeCount = 2; dpci.pPoolSizes = sizes;
VKD_CHECK(vkCreateDescriptorPool(m_device, &dpci, nullptr, &m_frame_pools[i]));
}
return true;
}
auto VulkanDevice::cleanup_swapchain() -> void
{
for (auto fb : m_framebuffers) vkDestroyFramebuffer(m_device, fb, nullptr);
m_framebuffers.clear();
if (m_depth_view) { vkDestroyImageView(m_device, m_depth_view, nullptr); m_depth_view = VK_NULL_HANDLE; }
if (m_depth_image) { vkDestroyImage(m_device, m_depth_image, nullptr); m_depth_image = VK_NULL_HANDLE; }
if (m_depth_mem) { vkFreeMemory(m_device, m_depth_mem, nullptr); m_depth_mem = VK_NULL_HANDLE; }
for (auto iv : m_image_views) vkDestroyImageView(m_device, iv, nullptr);
m_image_views.clear();
if (m_swapchain) { vkDestroySwapchainKHR(m_device, m_swapchain, nullptr); m_swapchain = VK_NULL_HANDLE; }
}
auto VulkanDevice::recreate_swapchain() -> bool
{
int w = 0, h = 0; glfwGetFramebufferSize(m_window, &w, &h);
while (w == 0 || h == 0) { glfwGetFramebufferSize(m_window, &w, &h); glfwWaitEvents(); }
m_width = w; m_height = h;
vkDeviceWaitIdle(m_device);
cleanup_swapchain();
if (!create_swapchain()) return false;
if (!create_image_views()) return false;
if (!create_depth_and_framebuffers())return false;
m_images_in_flight.assign(m_images.size(), VK_NULL_HANDLE);
return true;
}
}
|
