imgui_impl_vulkan.cpp 76 KB

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  1. // dear imgui: Renderer for Vulkan
  2. // This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..)
  3. // Implemented features:
  4. // [X] Renderer: Support for large meshes (64k+ vertices) with 16-bit indices.
  5. // [x] Platform: Multi-viewport / platform windows. With issues (flickering when creating a new viewport).
  6. // Missing features:
  7. // [ ] Renderer: User texture binding. Changes of ImTextureID aren't supported by this binding! See https://github.com/ocornut/imgui/pull/914
  8. // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
  9. // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
  10. // https://github.com/ocornut/imgui
  11. // The aim of imgui_impl_vulkan.h/.cpp is to be usable in your engine without any modification.
  12. // IF YOU FEEL YOU NEED TO MAKE ANY CHANGE TO THIS CODE, please share them and your feedback at https://github.com/ocornut/imgui/
  13. // Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own engine/app.
  14. // - Common ImGui_ImplVulkan_XXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
  15. // You will use those if you want to use this rendering back-end in your engine/app.
  16. // - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by
  17. // the back-end itself (imgui_impl_vulkan.cpp), but should PROBABLY NOT be used by your own engine/app code.
  18. // Read comments in imgui_impl_vulkan.h.
  19. // CHANGELOG
  20. // (minor and older changes stripped away, please see git history for details)
  21. // 2020-09-07: Vulkan: Added VkPipeline parameter to ImGui_ImplVulkan_RenderDrawData (default to one passed to ImGui_ImplVulkan_Init).
  22. // 2020-05-04: Vulkan: Fixed crash if initial frame has no vertices.
  23. // 2020-04-26: Vulkan: Fixed edge case where render callbacks wouldn't be called if the ImDrawData didn't have vertices.
  24. // 2019-08-01: Vulkan: Added support for specifying multisample count. Set ImGui_ImplVulkan_InitInfo::MSAASamples to one of the VkSampleCountFlagBits values to use, default is non-multisampled as before.
  25. // 2019-05-29: Vulkan: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
  26. // 2019-04-30: Vulkan: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
  27. // 2019-04-04: *BREAKING CHANGE*: Vulkan: Added ImageCount/MinImageCount fields in ImGui_ImplVulkan_InitInfo, required for initialization (was previously a hard #define IMGUI_VK_QUEUED_FRAMES 2). Added ImGui_ImplVulkan_SetMinImageCount().
  28. // 2019-04-04: Vulkan: Added VkInstance argument to ImGui_ImplVulkanH_CreateWindow() optional helper.
  29. // 2019-04-04: Vulkan: Avoid passing negative coordinates to vkCmdSetScissor, which debug validation layers do not like.
  30. // 2019-04-01: Vulkan: Support for 32-bit index buffer (#define ImDrawIdx unsigned int).
  31. // 2019-02-16: Vulkan: Viewport and clipping rectangles correctly using draw_data->FramebufferScale to allow retina display.
  32. // 2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
  33. // 2018-08-25: Vulkan: Fixed mishandled VkSurfaceCapabilitiesKHR::maxImageCount=0 case.
  34. // 2018-06-22: Inverted the parameters to ImGui_ImplVulkan_RenderDrawData() to be consistent with other bindings.
  35. // 2018-06-08: Misc: Extracted imgui_impl_vulkan.cpp/.h away from the old combined GLFW+Vulkan example.
  36. // 2018-06-08: Vulkan: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
  37. // 2018-03-03: Vulkan: Various refactor, created a couple of ImGui_ImplVulkanH_XXX helper that the example can use and that viewport support will use.
  38. // 2018-03-01: Vulkan: Renamed ImGui_ImplVulkan_Init_Info to ImGui_ImplVulkan_InitInfo and fields to match more closely Vulkan terminology.
  39. // 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback, ImGui_ImplVulkan_Render() calls ImGui_ImplVulkan_RenderDrawData() itself.
  40. // 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
  41. // 2017-05-15: Vulkan: Fix scissor offset being negative. Fix new Vulkan validation warnings. Set required depth member for buffer image copy.
  42. // 2016-11-13: Vulkan: Fix validation layer warnings and errors and redeclare gl_PerVertex.
  43. // 2016-10-18: Vulkan: Add location decorators & change to use structs as in/out in glsl, update embedded spv (produced with glslangValidator -x). Null the released resources.
  44. // 2016-08-27: Vulkan: Fix Vulkan example for use when a depth buffer is active.
  45. #include "imgui.h"
  46. #include "imgui_impl_vulkan.h"
  47. #include <stdio.h>
  48. // Reusable buffers used for rendering 1 current in-flight frame, for ImGui_ImplVulkan_RenderDrawData()
  49. // [Please zero-clear before use!]
  50. struct ImGui_ImplVulkanH_FrameRenderBuffers
  51. {
  52. VkDeviceMemory VertexBufferMemory;
  53. VkDeviceMemory IndexBufferMemory;
  54. VkDeviceSize VertexBufferSize;
  55. VkDeviceSize IndexBufferSize;
  56. VkBuffer VertexBuffer;
  57. VkBuffer IndexBuffer;
  58. };
  59. // Each viewport will hold 1 ImGui_ImplVulkanH_WindowRenderBuffers
  60. // [Please zero-clear before use!]
  61. struct ImGui_ImplVulkanH_WindowRenderBuffers
  62. {
  63. uint32_t Index;
  64. uint32_t Count;
  65. ImGui_ImplVulkanH_FrameRenderBuffers* FrameRenderBuffers;
  66. };
  67. // For multi-viewport support:
  68. // Helper structure we store in the void* RenderUserData field of each ImGuiViewport to easily retrieve our backend data.
  69. struct ImGuiViewportDataVulkan
  70. {
  71. bool WindowOwned;
  72. ImGui_ImplVulkanH_Window Window; // Used by secondary viewports only
  73. ImGui_ImplVulkanH_WindowRenderBuffers RenderBuffers; // Used by all viewports
  74. ImGuiViewportDataVulkan() { WindowOwned = false; memset(&RenderBuffers, 0, sizeof(RenderBuffers)); }
  75. ~ImGuiViewportDataVulkan() { }
  76. };
  77. // Vulkan data
  78. static ImGui_ImplVulkan_InitInfo g_VulkanInitInfo = {};
  79. static VkRenderPass g_RenderPass = VK_NULL_HANDLE;
  80. static VkDeviceSize g_BufferMemoryAlignment = 256;
  81. static VkPipelineCreateFlags g_PipelineCreateFlags = 0x00;
  82. static VkDescriptorSetLayout g_DescriptorSetLayout = VK_NULL_HANDLE;
  83. static VkPipelineLayout g_PipelineLayout = VK_NULL_HANDLE;
  84. static VkDescriptorSet g_DescriptorSet = VK_NULL_HANDLE;
  85. static VkPipeline g_Pipeline = VK_NULL_HANDLE;
  86. static VkShaderModule g_ShaderModuleVert;
  87. static VkShaderModule g_ShaderModuleFrag;
  88. // Font data
  89. static VkSampler g_FontSampler = VK_NULL_HANDLE;
  90. static VkDeviceMemory g_FontMemory = VK_NULL_HANDLE;
  91. static VkImage g_FontImage = VK_NULL_HANDLE;
  92. static VkImageView g_FontView = VK_NULL_HANDLE;
  93. static VkDeviceMemory g_UploadBufferMemory = VK_NULL_HANDLE;
  94. static VkBuffer g_UploadBuffer = VK_NULL_HANDLE;
  95. // Forward Declarations
  96. bool ImGui_ImplVulkan_CreateDeviceObjects();
  97. void ImGui_ImplVulkan_DestroyDeviceObjects();
  98. void ImGui_ImplVulkanH_DestroyFrame(VkDevice device, ImGui_ImplVulkanH_Frame* fd, const VkAllocationCallbacks* allocator);
  99. void ImGui_ImplVulkanH_DestroyFrameSemaphores(VkDevice device, ImGui_ImplVulkanH_FrameSemaphores* fsd, const VkAllocationCallbacks* allocator);
  100. void ImGui_ImplVulkanH_DestroyFrameRenderBuffers(VkDevice device, ImGui_ImplVulkanH_FrameRenderBuffers* buffers, const VkAllocationCallbacks* allocator);
  101. void ImGui_ImplVulkanH_DestroyWindowRenderBuffers(VkDevice device, ImGui_ImplVulkanH_WindowRenderBuffers* buffers, const VkAllocationCallbacks* allocator);
  102. void ImGui_ImplVulkanH_DestroyAllViewportsRenderBuffers(VkDevice device, const VkAllocationCallbacks* allocator);
  103. void ImGui_ImplVulkanH_CreateWindowSwapChain(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_Window* wd, const VkAllocationCallbacks* allocator, int w, int h, uint32_t min_image_count);
  104. void ImGui_ImplVulkanH_CreateWindowCommandBuffers(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_Window* wd, uint32_t queue_family, const VkAllocationCallbacks* allocator);
  105. //-----------------------------------------------------------------------------
  106. // SHADERS
  107. //-----------------------------------------------------------------------------
  108. // Forward Declarations
  109. static void ImGui_ImplVulkan_InitPlatformInterface();
  110. static void ImGui_ImplVulkan_ShutdownPlatformInterface();
  111. // glsl_shader.vert, compiled with:
  112. // # glslangValidator -V -x -o glsl_shader.vert.u32 glsl_shader.vert
  113. /*
  114. #version 450 core
  115. layout(location = 0) in vec2 aPos;
  116. layout(location = 1) in vec2 aUV;
  117. layout(location = 2) in vec4 aColor;
  118. layout(push_constant) uniform uPushConstant { vec2 uScale; vec2 uTranslate; } pc;
  119. out gl_PerVertex { vec4 gl_Position; };
  120. layout(location = 0) out struct { vec4 Color; vec2 UV; } Out;
  121. void main()
  122. {
  123. Out.Color = aColor;
  124. Out.UV = aUV;
  125. gl_Position = vec4(aPos * pc.uScale + pc.uTranslate, 0, 1);
  126. }
  127. */
  128. static uint32_t __glsl_shader_vert_spv[] =
  129. {
  130. 0x07230203,0x00010000,0x00080001,0x0000002e,0x00000000,0x00020011,0x00000001,0x0006000b,
  131. 0x00000001,0x4c534c47,0x6474732e,0x3035342e,0x00000000,0x0003000e,0x00000000,0x00000001,
  132. 0x000a000f,0x00000000,0x00000004,0x6e69616d,0x00000000,0x0000000b,0x0000000f,0x00000015,
  133. 0x0000001b,0x0000001c,0x00030003,0x00000002,0x000001c2,0x00040005,0x00000004,0x6e69616d,
  134. 0x00000000,0x00030005,0x00000009,0x00000000,0x00050006,0x00000009,0x00000000,0x6f6c6f43,
  135. 0x00000072,0x00040006,0x00000009,0x00000001,0x00005655,0x00030005,0x0000000b,0x0074754f,
  136. 0x00040005,0x0000000f,0x6c6f4361,0x0000726f,0x00030005,0x00000015,0x00565561,0x00060005,
  137. 0x00000019,0x505f6c67,0x65567265,0x78657472,0x00000000,0x00060006,0x00000019,0x00000000,
  138. 0x505f6c67,0x7469736f,0x006e6f69,0x00030005,0x0000001b,0x00000000,0x00040005,0x0000001c,
  139. 0x736f5061,0x00000000,0x00060005,0x0000001e,0x73755075,0x6e6f4368,0x6e617473,0x00000074,
  140. 0x00050006,0x0000001e,0x00000000,0x61635375,0x0000656c,0x00060006,0x0000001e,0x00000001,
  141. 0x61725475,0x616c736e,0x00006574,0x00030005,0x00000020,0x00006370,0x00040047,0x0000000b,
  142. 0x0000001e,0x00000000,0x00040047,0x0000000f,0x0000001e,0x00000002,0x00040047,0x00000015,
  143. 0x0000001e,0x00000001,0x00050048,0x00000019,0x00000000,0x0000000b,0x00000000,0x00030047,
  144. 0x00000019,0x00000002,0x00040047,0x0000001c,0x0000001e,0x00000000,0x00050048,0x0000001e,
  145. 0x00000000,0x00000023,0x00000000,0x00050048,0x0000001e,0x00000001,0x00000023,0x00000008,
  146. 0x00030047,0x0000001e,0x00000002,0x00020013,0x00000002,0x00030021,0x00000003,0x00000002,
  147. 0x00030016,0x00000006,0x00000020,0x00040017,0x00000007,0x00000006,0x00000004,0x00040017,
  148. 0x00000008,0x00000006,0x00000002,0x0004001e,0x00000009,0x00000007,0x00000008,0x00040020,
  149. 0x0000000a,0x00000003,0x00000009,0x0004003b,0x0000000a,0x0000000b,0x00000003,0x00040015,
  150. 0x0000000c,0x00000020,0x00000001,0x0004002b,0x0000000c,0x0000000d,0x00000000,0x00040020,
  151. 0x0000000e,0x00000001,0x00000007,0x0004003b,0x0000000e,0x0000000f,0x00000001,0x00040020,
  152. 0x00000011,0x00000003,0x00000007,0x0004002b,0x0000000c,0x00000013,0x00000001,0x00040020,
  153. 0x00000014,0x00000001,0x00000008,0x0004003b,0x00000014,0x00000015,0x00000001,0x00040020,
  154. 0x00000017,0x00000003,0x00000008,0x0003001e,0x00000019,0x00000007,0x00040020,0x0000001a,
  155. 0x00000003,0x00000019,0x0004003b,0x0000001a,0x0000001b,0x00000003,0x0004003b,0x00000014,
  156. 0x0000001c,0x00000001,0x0004001e,0x0000001e,0x00000008,0x00000008,0x00040020,0x0000001f,
  157. 0x00000009,0x0000001e,0x0004003b,0x0000001f,0x00000020,0x00000009,0x00040020,0x00000021,
  158. 0x00000009,0x00000008,0x0004002b,0x00000006,0x00000028,0x00000000,0x0004002b,0x00000006,
  159. 0x00000029,0x3f800000,0x00050036,0x00000002,0x00000004,0x00000000,0x00000003,0x000200f8,
  160. 0x00000005,0x0004003d,0x00000007,0x00000010,0x0000000f,0x00050041,0x00000011,0x00000012,
  161. 0x0000000b,0x0000000d,0x0003003e,0x00000012,0x00000010,0x0004003d,0x00000008,0x00000016,
  162. 0x00000015,0x00050041,0x00000017,0x00000018,0x0000000b,0x00000013,0x0003003e,0x00000018,
  163. 0x00000016,0x0004003d,0x00000008,0x0000001d,0x0000001c,0x00050041,0x00000021,0x00000022,
  164. 0x00000020,0x0000000d,0x0004003d,0x00000008,0x00000023,0x00000022,0x00050085,0x00000008,
  165. 0x00000024,0x0000001d,0x00000023,0x00050041,0x00000021,0x00000025,0x00000020,0x00000013,
  166. 0x0004003d,0x00000008,0x00000026,0x00000025,0x00050081,0x00000008,0x00000027,0x00000024,
  167. 0x00000026,0x00050051,0x00000006,0x0000002a,0x00000027,0x00000000,0x00050051,0x00000006,
  168. 0x0000002b,0x00000027,0x00000001,0x00070050,0x00000007,0x0000002c,0x0000002a,0x0000002b,
  169. 0x00000028,0x00000029,0x00050041,0x00000011,0x0000002d,0x0000001b,0x0000000d,0x0003003e,
  170. 0x0000002d,0x0000002c,0x000100fd,0x00010038
  171. };
  172. // glsl_shader.frag, compiled with:
  173. // # glslangValidator -V -x -o glsl_shader.frag.u32 glsl_shader.frag
  174. /*
  175. #version 450 core
  176. layout(location = 0) out vec4 fColor;
  177. layout(set=0, binding=0) uniform sampler2D sTexture;
  178. layout(location = 0) in struct { vec4 Color; vec2 UV; } In;
  179. void main()
  180. {
  181. fColor = In.Color * texture(sTexture, In.UV.st);
  182. }
  183. */
  184. static uint32_t __glsl_shader_frag_spv[] =
  185. {
  186. 0x07230203,0x00010000,0x00080001,0x0000001e,0x00000000,0x00020011,0x00000001,0x0006000b,
  187. 0x00000001,0x4c534c47,0x6474732e,0x3035342e,0x00000000,0x0003000e,0x00000000,0x00000001,
  188. 0x0007000f,0x00000004,0x00000004,0x6e69616d,0x00000000,0x00000009,0x0000000d,0x00030010,
  189. 0x00000004,0x00000007,0x00030003,0x00000002,0x000001c2,0x00040005,0x00000004,0x6e69616d,
  190. 0x00000000,0x00040005,0x00000009,0x6c6f4366,0x0000726f,0x00030005,0x0000000b,0x00000000,
  191. 0x00050006,0x0000000b,0x00000000,0x6f6c6f43,0x00000072,0x00040006,0x0000000b,0x00000001,
  192. 0x00005655,0x00030005,0x0000000d,0x00006e49,0x00050005,0x00000016,0x78655473,0x65727574,
  193. 0x00000000,0x00040047,0x00000009,0x0000001e,0x00000000,0x00040047,0x0000000d,0x0000001e,
  194. 0x00000000,0x00040047,0x00000016,0x00000022,0x00000000,0x00040047,0x00000016,0x00000021,
  195. 0x00000000,0x00020013,0x00000002,0x00030021,0x00000003,0x00000002,0x00030016,0x00000006,
  196. 0x00000020,0x00040017,0x00000007,0x00000006,0x00000004,0x00040020,0x00000008,0x00000003,
  197. 0x00000007,0x0004003b,0x00000008,0x00000009,0x00000003,0x00040017,0x0000000a,0x00000006,
  198. 0x00000002,0x0004001e,0x0000000b,0x00000007,0x0000000a,0x00040020,0x0000000c,0x00000001,
  199. 0x0000000b,0x0004003b,0x0000000c,0x0000000d,0x00000001,0x00040015,0x0000000e,0x00000020,
  200. 0x00000001,0x0004002b,0x0000000e,0x0000000f,0x00000000,0x00040020,0x00000010,0x00000001,
  201. 0x00000007,0x00090019,0x00000013,0x00000006,0x00000001,0x00000000,0x00000000,0x00000000,
  202. 0x00000001,0x00000000,0x0003001b,0x00000014,0x00000013,0x00040020,0x00000015,0x00000000,
  203. 0x00000014,0x0004003b,0x00000015,0x00000016,0x00000000,0x0004002b,0x0000000e,0x00000018,
  204. 0x00000001,0x00040020,0x00000019,0x00000001,0x0000000a,0x00050036,0x00000002,0x00000004,
  205. 0x00000000,0x00000003,0x000200f8,0x00000005,0x00050041,0x00000010,0x00000011,0x0000000d,
  206. 0x0000000f,0x0004003d,0x00000007,0x00000012,0x00000011,0x0004003d,0x00000014,0x00000017,
  207. 0x00000016,0x00050041,0x00000019,0x0000001a,0x0000000d,0x00000018,0x0004003d,0x0000000a,
  208. 0x0000001b,0x0000001a,0x00050057,0x00000007,0x0000001c,0x00000017,0x0000001b,0x00050085,
  209. 0x00000007,0x0000001d,0x00000012,0x0000001c,0x0003003e,0x00000009,0x0000001d,0x000100fd,
  210. 0x00010038
  211. };
  212. //-----------------------------------------------------------------------------
  213. // FUNCTIONS
  214. //-----------------------------------------------------------------------------
  215. static uint32_t ImGui_ImplVulkan_MemoryType(VkMemoryPropertyFlags properties, uint32_t type_bits)
  216. {
  217. ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo;
  218. VkPhysicalDeviceMemoryProperties prop;
  219. vkGetPhysicalDeviceMemoryProperties(v->PhysicalDevice, &prop);
  220. for (uint32_t i = 0; i < prop.memoryTypeCount; i++)
  221. if ((prop.memoryTypes[i].propertyFlags & properties) == properties && type_bits & (1 << i))
  222. return i;
  223. return 0xFFFFFFFF; // Unable to find memoryType
  224. }
  225. static void check_vk_result(VkResult err)
  226. {
  227. ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo;
  228. if (v->CheckVkResultFn)
  229. v->CheckVkResultFn(err);
  230. }
  231. static void CreateOrResizeBuffer(VkBuffer& buffer, VkDeviceMemory& buffer_memory, VkDeviceSize& p_buffer_size, size_t new_size, VkBufferUsageFlagBits usage)
  232. {
  233. ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo;
  234. VkResult err;
  235. if (buffer != VK_NULL_HANDLE)
  236. vkDestroyBuffer(v->Device, buffer, v->Allocator);
  237. if (buffer_memory != VK_NULL_HANDLE)
  238. vkFreeMemory(v->Device, buffer_memory, v->Allocator);
  239. VkDeviceSize vertex_buffer_size_aligned = ((new_size - 1) / g_BufferMemoryAlignment + 1) * g_BufferMemoryAlignment;
  240. VkBufferCreateInfo buffer_info = {};
  241. buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
  242. buffer_info.size = vertex_buffer_size_aligned;
  243. buffer_info.usage = usage;
  244. buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
  245. err = vkCreateBuffer(v->Device, &buffer_info, v->Allocator, &buffer);
  246. check_vk_result(err);
  247. VkMemoryRequirements req;
  248. vkGetBufferMemoryRequirements(v->Device, buffer, &req);
  249. g_BufferMemoryAlignment = (g_BufferMemoryAlignment > req.alignment) ? g_BufferMemoryAlignment : req.alignment;
  250. VkMemoryAllocateInfo alloc_info = {};
  251. alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
  252. alloc_info.allocationSize = req.size;
  253. alloc_info.memoryTypeIndex = ImGui_ImplVulkan_MemoryType(VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, req.memoryTypeBits);
  254. err = vkAllocateMemory(v->Device, &alloc_info, v->Allocator, &buffer_memory);
  255. check_vk_result(err);
  256. err = vkBindBufferMemory(v->Device, buffer, buffer_memory, 0);
  257. check_vk_result(err);
  258. p_buffer_size = new_size;
  259. }
  260. static void ImGui_ImplVulkan_SetupRenderState(ImDrawData* draw_data, VkPipeline pipeline, VkCommandBuffer command_buffer, ImGui_ImplVulkanH_FrameRenderBuffers* rb, int fb_width, int fb_height)
  261. {
  262. // Bind pipeline and descriptor sets:
  263. {
  264. vkCmdBindPipeline(command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
  265. VkDescriptorSet desc_set[1] = { g_DescriptorSet };
  266. vkCmdBindDescriptorSets(command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, g_PipelineLayout, 0, 1, desc_set, 0, NULL);
  267. }
  268. // Bind Vertex And Index Buffer:
  269. if (draw_data->TotalVtxCount > 0)
  270. {
  271. VkBuffer vertex_buffers[1] = { rb->VertexBuffer };
  272. VkDeviceSize vertex_offset[1] = { 0 };
  273. vkCmdBindVertexBuffers(command_buffer, 0, 1, vertex_buffers, vertex_offset);
  274. vkCmdBindIndexBuffer(command_buffer, rb->IndexBuffer, 0, sizeof(ImDrawIdx) == 2 ? VK_INDEX_TYPE_UINT16 : VK_INDEX_TYPE_UINT32);
  275. }
  276. // Setup viewport:
  277. {
  278. VkViewport viewport;
  279. viewport.x = 0;
  280. viewport.y = 0;
  281. viewport.width = (float)fb_width;
  282. viewport.height = (float)fb_height;
  283. viewport.minDepth = 0.0f;
  284. viewport.maxDepth = 1.0f;
  285. vkCmdSetViewport(command_buffer, 0, 1, &viewport);
  286. }
  287. // Setup scale and translation:
  288. // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
  289. {
  290. float scale[2];
  291. scale[0] = 2.0f / draw_data->DisplaySize.x;
  292. scale[1] = 2.0f / draw_data->DisplaySize.y;
  293. float translate[2];
  294. translate[0] = -1.0f - draw_data->DisplayPos.x * scale[0];
  295. translate[1] = -1.0f - draw_data->DisplayPos.y * scale[1];
  296. vkCmdPushConstants(command_buffer, g_PipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, sizeof(float) * 0, sizeof(float) * 2, scale);
  297. vkCmdPushConstants(command_buffer, g_PipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, sizeof(float) * 2, sizeof(float) * 2, translate);
  298. }
  299. }
  300. // Render function
  301. // (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
  302. void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer command_buffer, VkPipeline pipeline)
  303. {
  304. // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
  305. int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
  306. int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
  307. if (fb_width <= 0 || fb_height <= 0)
  308. return;
  309. ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo;
  310. if (pipeline == VK_NULL_HANDLE)
  311. pipeline = g_Pipeline;
  312. // Allocate array to store enough vertex/index buffers. Each unique viewport gets its own storage.
  313. ImGuiViewportDataVulkan* viewport_renderer_data = (ImGuiViewportDataVulkan*)draw_data->OwnerViewport->RendererUserData;
  314. IM_ASSERT(viewport_renderer_data != NULL);
  315. ImGui_ImplVulkanH_WindowRenderBuffers* wrb = &viewport_renderer_data->RenderBuffers;
  316. if (wrb->FrameRenderBuffers == NULL)
  317. {
  318. wrb->Index = 0;
  319. wrb->Count = v->ImageCount;
  320. wrb->FrameRenderBuffers = (ImGui_ImplVulkanH_FrameRenderBuffers*)IM_ALLOC(sizeof(ImGui_ImplVulkanH_FrameRenderBuffers) * wrb->Count);
  321. memset(wrb->FrameRenderBuffers, 0, sizeof(ImGui_ImplVulkanH_FrameRenderBuffers) * wrb->Count);
  322. }
  323. IM_ASSERT(wrb->Count == v->ImageCount);
  324. wrb->Index = (wrb->Index + 1) % wrb->Count;
  325. ImGui_ImplVulkanH_FrameRenderBuffers* rb = &wrb->FrameRenderBuffers[wrb->Index];
  326. if (draw_data->TotalVtxCount > 0)
  327. {
  328. // Create or resize the vertex/index buffers
  329. size_t vertex_size = draw_data->TotalVtxCount * sizeof(ImDrawVert);
  330. size_t index_size = draw_data->TotalIdxCount * sizeof(ImDrawIdx);
  331. if (rb->VertexBuffer == VK_NULL_HANDLE || rb->VertexBufferSize < vertex_size)
  332. CreateOrResizeBuffer(rb->VertexBuffer, rb->VertexBufferMemory, rb->VertexBufferSize, vertex_size, VK_BUFFER_USAGE_VERTEX_BUFFER_BIT);
  333. if (rb->IndexBuffer == VK_NULL_HANDLE || rb->IndexBufferSize < index_size)
  334. CreateOrResizeBuffer(rb->IndexBuffer, rb->IndexBufferMemory, rb->IndexBufferSize, index_size, VK_BUFFER_USAGE_INDEX_BUFFER_BIT);
  335. // Upload vertex/index data into a single contiguous GPU buffer
  336. ImDrawVert* vtx_dst = NULL;
  337. ImDrawIdx* idx_dst = NULL;
  338. VkResult err = vkMapMemory(v->Device, rb->VertexBufferMemory, 0, vertex_size, 0, (void**)(&vtx_dst));
  339. check_vk_result(err);
  340. err = vkMapMemory(v->Device, rb->IndexBufferMemory, 0, index_size, 0, (void**)(&idx_dst));
  341. check_vk_result(err);
  342. for (int n = 0; n < draw_data->CmdListsCount; n++)
  343. {
  344. const ImDrawList* cmd_list = draw_data->CmdLists[n];
  345. memcpy(vtx_dst, cmd_list->VtxBuffer.Data, cmd_list->VtxBuffer.Size * sizeof(ImDrawVert));
  346. memcpy(idx_dst, cmd_list->IdxBuffer.Data, cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx));
  347. vtx_dst += cmd_list->VtxBuffer.Size;
  348. idx_dst += cmd_list->IdxBuffer.Size;
  349. }
  350. VkMappedMemoryRange range[2] = {};
  351. range[0].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
  352. range[0].memory = rb->VertexBufferMemory;
  353. range[0].size = VK_WHOLE_SIZE;
  354. range[1].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
  355. range[1].memory = rb->IndexBufferMemory;
  356. range[1].size = VK_WHOLE_SIZE;
  357. err = vkFlushMappedMemoryRanges(v->Device, 2, range);
  358. check_vk_result(err);
  359. vkUnmapMemory(v->Device, rb->VertexBufferMemory);
  360. vkUnmapMemory(v->Device, rb->IndexBufferMemory);
  361. }
  362. // Setup desired Vulkan state
  363. ImGui_ImplVulkan_SetupRenderState(draw_data, pipeline, command_buffer, rb, fb_width, fb_height);
  364. // Will project scissor/clipping rectangles into framebuffer space
  365. ImVec2 clip_off = draw_data->DisplayPos; // (0,0) unless using multi-viewports
  366. ImVec2 clip_scale = draw_data->FramebufferScale; // (1,1) unless using retina display which are often (2,2)
  367. // Render command lists
  368. // (Because we merged all buffers into a single one, we maintain our own offset into them)
  369. int global_vtx_offset = 0;
  370. int global_idx_offset = 0;
  371. for (int n = 0; n < draw_data->CmdListsCount; n++)
  372. {
  373. const ImDrawList* cmd_list = draw_data->CmdLists[n];
  374. for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
  375. {
  376. const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
  377. if (pcmd->UserCallback != NULL)
  378. {
  379. // User callback, registered via ImDrawList::AddCallback()
  380. // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
  381. if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
  382. ImGui_ImplVulkan_SetupRenderState(draw_data, pipeline, command_buffer, rb, fb_width, fb_height);
  383. else
  384. pcmd->UserCallback(cmd_list, pcmd);
  385. }
  386. else
  387. {
  388. // Project scissor/clipping rectangles into framebuffer space
  389. ImVec4 clip_rect;
  390. clip_rect.x = (pcmd->ClipRect.x - clip_off.x) * clip_scale.x;
  391. clip_rect.y = (pcmd->ClipRect.y - clip_off.y) * clip_scale.y;
  392. clip_rect.z = (pcmd->ClipRect.z - clip_off.x) * clip_scale.x;
  393. clip_rect.w = (pcmd->ClipRect.w - clip_off.y) * clip_scale.y;
  394. if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0f && clip_rect.w >= 0.0f)
  395. {
  396. // Negative offsets are illegal for vkCmdSetScissor
  397. if (clip_rect.x < 0.0f)
  398. clip_rect.x = 0.0f;
  399. if (clip_rect.y < 0.0f)
  400. clip_rect.y = 0.0f;
  401. // Apply scissor/clipping rectangle
  402. VkRect2D scissor;
  403. scissor.offset.x = (int32_t)(clip_rect.x);
  404. scissor.offset.y = (int32_t)(clip_rect.y);
  405. scissor.extent.width = (uint32_t)(clip_rect.z - clip_rect.x);
  406. scissor.extent.height = (uint32_t)(clip_rect.w - clip_rect.y);
  407. vkCmdSetScissor(command_buffer, 0, 1, &scissor);
  408. // Draw
  409. vkCmdDrawIndexed(command_buffer, pcmd->ElemCount, 1, pcmd->IdxOffset + global_idx_offset, pcmd->VtxOffset + global_vtx_offset, 0);
  410. }
  411. }
  412. }
  413. global_idx_offset += cmd_list->IdxBuffer.Size;
  414. global_vtx_offset += cmd_list->VtxBuffer.Size;
  415. }
  416. }
  417. bool ImGui_ImplVulkan_CreateFontsTexture(VkCommandBuffer command_buffer)
  418. {
  419. ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo;
  420. ImGuiIO& io = ImGui::GetIO();
  421. unsigned char* pixels;
  422. int width, height;
  423. io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
  424. size_t upload_size = width * height * 4 * sizeof(char);
  425. VkResult err;
  426. // Create the Image:
  427. {
  428. VkImageCreateInfo info = {};
  429. info.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
  430. info.imageType = VK_IMAGE_TYPE_2D;
  431. info.format = VK_FORMAT_R8G8B8A8_UNORM;
  432. info.extent.width = width;
  433. info.extent.height = height;
  434. info.extent.depth = 1;
  435. info.mipLevels = 1;
  436. info.arrayLayers = 1;
  437. info.samples = VK_SAMPLE_COUNT_1_BIT;
  438. info.tiling = VK_IMAGE_TILING_OPTIMAL;
  439. info.usage = VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT;
  440. info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
  441. info.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
  442. err = vkCreateImage(v->Device, &info, v->Allocator, &g_FontImage);
  443. check_vk_result(err);
  444. VkMemoryRequirements req;
  445. vkGetImageMemoryRequirements(v->Device, g_FontImage, &req);
  446. VkMemoryAllocateInfo alloc_info = {};
  447. alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
  448. alloc_info.allocationSize = req.size;
  449. alloc_info.memoryTypeIndex = ImGui_ImplVulkan_MemoryType(VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, req.memoryTypeBits);
  450. err = vkAllocateMemory(v->Device, &alloc_info, v->Allocator, &g_FontMemory);
  451. check_vk_result(err);
  452. err = vkBindImageMemory(v->Device, g_FontImage, g_FontMemory, 0);
  453. check_vk_result(err);
  454. }
  455. // Create the Image View:
  456. {
  457. VkImageViewCreateInfo info = {};
  458. info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
  459. info.image = g_FontImage;
  460. info.viewType = VK_IMAGE_VIEW_TYPE_2D;
  461. info.format = VK_FORMAT_R8G8B8A8_UNORM;
  462. info.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
  463. info.subresourceRange.levelCount = 1;
  464. info.subresourceRange.layerCount = 1;
  465. err = vkCreateImageView(v->Device, &info, v->Allocator, &g_FontView);
  466. check_vk_result(err);
  467. }
  468. // Update the Descriptor Set:
  469. {
  470. VkDescriptorImageInfo desc_image[1] = {};
  471. desc_image[0].sampler = g_FontSampler;
  472. desc_image[0].imageView = g_FontView;
  473. desc_image[0].imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
  474. VkWriteDescriptorSet write_desc[1] = {};
  475. write_desc[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
  476. write_desc[0].dstSet = g_DescriptorSet;
  477. write_desc[0].descriptorCount = 1;
  478. write_desc[0].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
  479. write_desc[0].pImageInfo = desc_image;
  480. vkUpdateDescriptorSets(v->Device, 1, write_desc, 0, NULL);
  481. }
  482. // Create the Upload Buffer:
  483. {
  484. VkBufferCreateInfo buffer_info = {};
  485. buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
  486. buffer_info.size = upload_size;
  487. buffer_info.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
  488. buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
  489. err = vkCreateBuffer(v->Device, &buffer_info, v->Allocator, &g_UploadBuffer);
  490. check_vk_result(err);
  491. VkMemoryRequirements req;
  492. vkGetBufferMemoryRequirements(v->Device, g_UploadBuffer, &req);
  493. g_BufferMemoryAlignment = (g_BufferMemoryAlignment > req.alignment) ? g_BufferMemoryAlignment : req.alignment;
  494. VkMemoryAllocateInfo alloc_info = {};
  495. alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
  496. alloc_info.allocationSize = req.size;
  497. alloc_info.memoryTypeIndex = ImGui_ImplVulkan_MemoryType(VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, req.memoryTypeBits);
  498. err = vkAllocateMemory(v->Device, &alloc_info, v->Allocator, &g_UploadBufferMemory);
  499. check_vk_result(err);
  500. err = vkBindBufferMemory(v->Device, g_UploadBuffer, g_UploadBufferMemory, 0);
  501. check_vk_result(err);
  502. }
  503. // Upload to Buffer:
  504. {
  505. char* map = NULL;
  506. err = vkMapMemory(v->Device, g_UploadBufferMemory, 0, upload_size, 0, (void**)(&map));
  507. check_vk_result(err);
  508. memcpy(map, pixels, upload_size);
  509. VkMappedMemoryRange range[1] = {};
  510. range[0].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
  511. range[0].memory = g_UploadBufferMemory;
  512. range[0].size = upload_size;
  513. err = vkFlushMappedMemoryRanges(v->Device, 1, range);
  514. check_vk_result(err);
  515. vkUnmapMemory(v->Device, g_UploadBufferMemory);
  516. }
  517. // Copy to Image:
  518. {
  519. VkImageMemoryBarrier copy_barrier[1] = {};
  520. copy_barrier[0].sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
  521. copy_barrier[0].dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
  522. copy_barrier[0].oldLayout = VK_IMAGE_LAYOUT_UNDEFINED;
  523. copy_barrier[0].newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
  524. copy_barrier[0].srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
  525. copy_barrier[0].dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
  526. copy_barrier[0].image = g_FontImage;
  527. copy_barrier[0].subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
  528. copy_barrier[0].subresourceRange.levelCount = 1;
  529. copy_barrier[0].subresourceRange.layerCount = 1;
  530. vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_HOST_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, NULL, 0, NULL, 1, copy_barrier);
  531. VkBufferImageCopy region = {};
  532. region.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
  533. region.imageSubresource.layerCount = 1;
  534. region.imageExtent.width = width;
  535. region.imageExtent.height = height;
  536. region.imageExtent.depth = 1;
  537. vkCmdCopyBufferToImage(command_buffer, g_UploadBuffer, g_FontImage, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &region);
  538. VkImageMemoryBarrier use_barrier[1] = {};
  539. use_barrier[0].sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
  540. use_barrier[0].srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
  541. use_barrier[0].dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
  542. use_barrier[0].oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
  543. use_barrier[0].newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
  544. use_barrier[0].srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
  545. use_barrier[0].dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
  546. use_barrier[0].image = g_FontImage;
  547. use_barrier[0].subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
  548. use_barrier[0].subresourceRange.levelCount = 1;
  549. use_barrier[0].subresourceRange.layerCount = 1;
  550. vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT, 0, 0, NULL, 0, NULL, 1, use_barrier);
  551. }
  552. // Store our identifier
  553. io.Fonts->TexID = (ImTextureID)(intptr_t)g_FontImage;
  554. return true;
  555. }
  556. static void ImGui_ImplVulkan_CreateShaderModules(VkDevice device, const VkAllocationCallbacks* allocator)
  557. {
  558. // Create the shader modules
  559. if (g_ShaderModuleVert == NULL)
  560. {
  561. VkShaderModuleCreateInfo vert_info = {};
  562. vert_info.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
  563. vert_info.codeSize = sizeof(__glsl_shader_vert_spv);
  564. vert_info.pCode = (uint32_t*)__glsl_shader_vert_spv;
  565. VkResult err = vkCreateShaderModule(device, &vert_info, allocator, &g_ShaderModuleVert);
  566. check_vk_result(err);
  567. }
  568. if (g_ShaderModuleFrag == NULL)
  569. {
  570. VkShaderModuleCreateInfo frag_info = {};
  571. frag_info.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
  572. frag_info.codeSize = sizeof(__glsl_shader_frag_spv);
  573. frag_info.pCode = (uint32_t*)__glsl_shader_frag_spv;
  574. VkResult err = vkCreateShaderModule(device, &frag_info, allocator, &g_ShaderModuleFrag);
  575. check_vk_result(err);
  576. }
  577. }
  578. static void ImGui_ImplVulkan_CreateFontSampler(VkDevice device, const VkAllocationCallbacks* allocator)
  579. {
  580. if (g_FontSampler)
  581. return;
  582. VkSamplerCreateInfo info = {};
  583. info.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
  584. info.magFilter = VK_FILTER_LINEAR;
  585. info.minFilter = VK_FILTER_LINEAR;
  586. info.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
  587. info.addressModeU = VK_SAMPLER_ADDRESS_MODE_REPEAT;
  588. info.addressModeV = VK_SAMPLER_ADDRESS_MODE_REPEAT;
  589. info.addressModeW = VK_SAMPLER_ADDRESS_MODE_REPEAT;
  590. info.minLod = -1000;
  591. info.maxLod = 1000;
  592. info.maxAnisotropy = 1.0f;
  593. VkResult err = vkCreateSampler(device, &info, allocator, &g_FontSampler);
  594. check_vk_result(err);
  595. }
  596. static void ImGui_ImplVulkan_CreateDescriptorSetLayout(VkDevice device, const VkAllocationCallbacks* allocator)
  597. {
  598. if (g_DescriptorSetLayout)
  599. return;
  600. ImGui_ImplVulkan_CreateFontSampler(device, allocator);
  601. VkSampler sampler[1] = { g_FontSampler };
  602. VkDescriptorSetLayoutBinding binding[1] = {};
  603. binding[0].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
  604. binding[0].descriptorCount = 1;
  605. binding[0].stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT;
  606. binding[0].pImmutableSamplers = sampler;
  607. VkDescriptorSetLayoutCreateInfo info = {};
  608. info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
  609. info.bindingCount = 1;
  610. info.pBindings = binding;
  611. VkResult err = vkCreateDescriptorSetLayout(device, &info, allocator, &g_DescriptorSetLayout);
  612. check_vk_result(err);
  613. }
  614. static void ImGui_ImplVulkan_CreatePipelineLayout(VkDevice device, const VkAllocationCallbacks* allocator)
  615. {
  616. if (g_PipelineLayout)
  617. return;
  618. // Constants: we are using 'vec2 offset' and 'vec2 scale' instead of a full 3d projection matrix
  619. ImGui_ImplVulkan_CreateDescriptorSetLayout(device, allocator);
  620. VkPushConstantRange push_constants[1] = {};
  621. push_constants[0].stageFlags = VK_SHADER_STAGE_VERTEX_BIT;
  622. push_constants[0].offset = sizeof(float) * 0;
  623. push_constants[0].size = sizeof(float) * 4;
  624. VkDescriptorSetLayout set_layout[1] = { g_DescriptorSetLayout };
  625. VkPipelineLayoutCreateInfo layout_info = {};
  626. layout_info.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
  627. layout_info.setLayoutCount = 1;
  628. layout_info.pSetLayouts = set_layout;
  629. layout_info.pushConstantRangeCount = 1;
  630. layout_info.pPushConstantRanges = push_constants;
  631. VkResult err = vkCreatePipelineLayout(device, &layout_info, allocator, &g_PipelineLayout);
  632. check_vk_result(err);
  633. }
  634. static void ImGui_ImplVulkan_CreatePipeline(VkDevice device, const VkAllocationCallbacks* allocator, VkPipelineCache pipelineCache, VkRenderPass renderPass, VkSampleCountFlagBits MSAASamples, VkPipeline* pipeline)
  635. {
  636. ImGui_ImplVulkan_CreateShaderModules(device, allocator);
  637. VkPipelineShaderStageCreateInfo stage[2] = {};
  638. stage[0].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
  639. stage[0].stage = VK_SHADER_STAGE_VERTEX_BIT;
  640. stage[0].module = g_ShaderModuleVert;
  641. stage[0].pName = "main";
  642. stage[1].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
  643. stage[1].stage = VK_SHADER_STAGE_FRAGMENT_BIT;
  644. stage[1].module = g_ShaderModuleFrag;
  645. stage[1].pName = "main";
  646. VkVertexInputBindingDescription binding_desc[1] = {};
  647. binding_desc[0].stride = sizeof(ImDrawVert);
  648. binding_desc[0].inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
  649. VkVertexInputAttributeDescription attribute_desc[3] = {};
  650. attribute_desc[0].location = 0;
  651. attribute_desc[0].binding = binding_desc[0].binding;
  652. attribute_desc[0].format = VK_FORMAT_R32G32_SFLOAT;
  653. attribute_desc[0].offset = IM_OFFSETOF(ImDrawVert, pos);
  654. attribute_desc[1].location = 1;
  655. attribute_desc[1].binding = binding_desc[0].binding;
  656. attribute_desc[1].format = VK_FORMAT_R32G32_SFLOAT;
  657. attribute_desc[1].offset = IM_OFFSETOF(ImDrawVert, uv);
  658. attribute_desc[2].location = 2;
  659. attribute_desc[2].binding = binding_desc[0].binding;
  660. attribute_desc[2].format = VK_FORMAT_R8G8B8A8_UNORM;
  661. attribute_desc[2].offset = IM_OFFSETOF(ImDrawVert, col);
  662. VkPipelineVertexInputStateCreateInfo vertex_info = {};
  663. vertex_info.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
  664. vertex_info.vertexBindingDescriptionCount = 1;
  665. vertex_info.pVertexBindingDescriptions = binding_desc;
  666. vertex_info.vertexAttributeDescriptionCount = 3;
  667. vertex_info.pVertexAttributeDescriptions = attribute_desc;
  668. VkPipelineInputAssemblyStateCreateInfo ia_info = {};
  669. ia_info.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
  670. ia_info.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
  671. VkPipelineViewportStateCreateInfo viewport_info = {};
  672. viewport_info.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
  673. viewport_info.viewportCount = 1;
  674. viewport_info.scissorCount = 1;
  675. VkPipelineRasterizationStateCreateInfo raster_info = {};
  676. raster_info.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
  677. raster_info.polygonMode = VK_POLYGON_MODE_FILL;
  678. raster_info.cullMode = VK_CULL_MODE_NONE;
  679. raster_info.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
  680. raster_info.lineWidth = 1.0f;
  681. VkPipelineMultisampleStateCreateInfo ms_info = {};
  682. ms_info.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
  683. ms_info.rasterizationSamples = (MSAASamples != 0) ? MSAASamples : VK_SAMPLE_COUNT_1_BIT;
  684. VkPipelineColorBlendAttachmentState color_attachment[1] = {};
  685. color_attachment[0].blendEnable = VK_TRUE;
  686. color_attachment[0].srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
  687. color_attachment[0].dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
  688. color_attachment[0].colorBlendOp = VK_BLEND_OP_ADD;
  689. color_attachment[0].srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
  690. color_attachment[0].dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO;
  691. color_attachment[0].alphaBlendOp = VK_BLEND_OP_ADD;
  692. color_attachment[0].colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
  693. VkPipelineDepthStencilStateCreateInfo depth_info = {};
  694. depth_info.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
  695. VkPipelineColorBlendStateCreateInfo blend_info = {};
  696. blend_info.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
  697. blend_info.attachmentCount = 1;
  698. blend_info.pAttachments = color_attachment;
  699. VkDynamicState dynamic_states[2] = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
  700. VkPipelineDynamicStateCreateInfo dynamic_state = {};
  701. dynamic_state.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO;
  702. dynamic_state.dynamicStateCount = (uint32_t)IM_ARRAYSIZE(dynamic_states);
  703. dynamic_state.pDynamicStates = dynamic_states;
  704. ImGui_ImplVulkan_CreatePipelineLayout(device, allocator);
  705. VkGraphicsPipelineCreateInfo info = {};
  706. info.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
  707. info.flags = g_PipelineCreateFlags;
  708. info.stageCount = 2;
  709. info.pStages = stage;
  710. info.pVertexInputState = &vertex_info;
  711. info.pInputAssemblyState = &ia_info;
  712. info.pViewportState = &viewport_info;
  713. info.pRasterizationState = &raster_info;
  714. info.pMultisampleState = &ms_info;
  715. info.pDepthStencilState = &depth_info;
  716. info.pColorBlendState = &blend_info;
  717. info.pDynamicState = &dynamic_state;
  718. info.layout = g_PipelineLayout;
  719. info.renderPass = renderPass;
  720. VkResult err = vkCreateGraphicsPipelines(device, pipelineCache, 1, &info, allocator, pipeline);
  721. check_vk_result(err);
  722. }
  723. bool ImGui_ImplVulkan_CreateDeviceObjects()
  724. {
  725. ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo;
  726. VkResult err;
  727. if (!g_FontSampler)
  728. {
  729. VkSamplerCreateInfo info = {};
  730. info.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
  731. info.magFilter = VK_FILTER_LINEAR;
  732. info.minFilter = VK_FILTER_LINEAR;
  733. info.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
  734. info.addressModeU = VK_SAMPLER_ADDRESS_MODE_REPEAT;
  735. info.addressModeV = VK_SAMPLER_ADDRESS_MODE_REPEAT;
  736. info.addressModeW = VK_SAMPLER_ADDRESS_MODE_REPEAT;
  737. info.minLod = -1000;
  738. info.maxLod = 1000;
  739. info.maxAnisotropy = 1.0f;
  740. err = vkCreateSampler(v->Device, &info, v->Allocator, &g_FontSampler);
  741. check_vk_result(err);
  742. }
  743. if (!g_DescriptorSetLayout)
  744. {
  745. VkSampler sampler[1] = {g_FontSampler};
  746. VkDescriptorSetLayoutBinding binding[1] = {};
  747. binding[0].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
  748. binding[0].descriptorCount = 1;
  749. binding[0].stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT;
  750. binding[0].pImmutableSamplers = sampler;
  751. VkDescriptorSetLayoutCreateInfo info = {};
  752. info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
  753. info.bindingCount = 1;
  754. info.pBindings = binding;
  755. err = vkCreateDescriptorSetLayout(v->Device, &info, v->Allocator, &g_DescriptorSetLayout);
  756. check_vk_result(err);
  757. }
  758. // Create Descriptor Set:
  759. {
  760. VkDescriptorSetAllocateInfo alloc_info = {};
  761. alloc_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
  762. alloc_info.descriptorPool = v->DescriptorPool;
  763. alloc_info.descriptorSetCount = 1;
  764. alloc_info.pSetLayouts = &g_DescriptorSetLayout;
  765. err = vkAllocateDescriptorSets(v->Device, &alloc_info, &g_DescriptorSet);
  766. check_vk_result(err);
  767. }
  768. if (!g_PipelineLayout)
  769. {
  770. // Constants: we are using 'vec2 offset' and 'vec2 scale' instead of a full 3d projection matrix
  771. VkPushConstantRange push_constants[1] = {};
  772. push_constants[0].stageFlags = VK_SHADER_STAGE_VERTEX_BIT;
  773. push_constants[0].offset = sizeof(float) * 0;
  774. push_constants[0].size = sizeof(float) * 4;
  775. VkDescriptorSetLayout set_layout[1] = { g_DescriptorSetLayout };
  776. VkPipelineLayoutCreateInfo layout_info = {};
  777. layout_info.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
  778. layout_info.setLayoutCount = 1;
  779. layout_info.pSetLayouts = set_layout;
  780. layout_info.pushConstantRangeCount = 1;
  781. layout_info.pPushConstantRanges = push_constants;
  782. err = vkCreatePipelineLayout(v->Device, &layout_info, v->Allocator, &g_PipelineLayout);
  783. check_vk_result(err);
  784. }
  785. ImGui_ImplVulkan_CreatePipeline(v->Device, v->Allocator, v->PipelineCache, g_RenderPass, v->MSAASamples, &g_Pipeline);
  786. return true;
  787. }
  788. void ImGui_ImplVulkan_DestroyFontUploadObjects()
  789. {
  790. ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo;
  791. if (g_UploadBuffer)
  792. {
  793. vkDestroyBuffer(v->Device, g_UploadBuffer, v->Allocator);
  794. g_UploadBuffer = VK_NULL_HANDLE;
  795. }
  796. if (g_UploadBufferMemory)
  797. {
  798. vkFreeMemory(v->Device, g_UploadBufferMemory, v->Allocator);
  799. g_UploadBufferMemory = VK_NULL_HANDLE;
  800. }
  801. }
  802. void ImGui_ImplVulkan_DestroyDeviceObjects()
  803. {
  804. ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo;
  805. ImGui_ImplVulkanH_DestroyAllViewportsRenderBuffers(v->Device, v->Allocator);
  806. ImGui_ImplVulkan_DestroyFontUploadObjects();
  807. if (g_ShaderModuleVert) { vkDestroyShaderModule(v->Device, g_ShaderModuleVert, v->Allocator); g_ShaderModuleVert = VK_NULL_HANDLE; }
  808. if (g_ShaderModuleFrag) { vkDestroyShaderModule(v->Device, g_ShaderModuleFrag, v->Allocator); g_ShaderModuleFrag = VK_NULL_HANDLE; }
  809. if (g_FontView) { vkDestroyImageView(v->Device, g_FontView, v->Allocator); g_FontView = VK_NULL_HANDLE; }
  810. if (g_FontImage) { vkDestroyImage(v->Device, g_FontImage, v->Allocator); g_FontImage = VK_NULL_HANDLE; }
  811. if (g_FontMemory) { vkFreeMemory(v->Device, g_FontMemory, v->Allocator); g_FontMemory = VK_NULL_HANDLE; }
  812. if (g_FontSampler) { vkDestroySampler(v->Device, g_FontSampler, v->Allocator); g_FontSampler = VK_NULL_HANDLE; }
  813. if (g_DescriptorSetLayout) { vkDestroyDescriptorSetLayout(v->Device, g_DescriptorSetLayout, v->Allocator); g_DescriptorSetLayout = VK_NULL_HANDLE; }
  814. if (g_PipelineLayout) { vkDestroyPipelineLayout(v->Device, g_PipelineLayout, v->Allocator); g_PipelineLayout = VK_NULL_HANDLE; }
  815. if (g_Pipeline) { vkDestroyPipeline(v->Device, g_Pipeline, v->Allocator); g_Pipeline = VK_NULL_HANDLE; }
  816. }
  817. bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass render_pass)
  818. {
  819. // Setup back-end capabilities flags
  820. ImGuiIO& io = ImGui::GetIO();
  821. io.BackendRendererName = "imgui_impl_vulkan";
  822. io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
  823. io.BackendFlags |= ImGuiBackendFlags_RendererHasViewports; // We can create multi-viewports on the Renderer side (optional)
  824. IM_ASSERT(info->Instance != VK_NULL_HANDLE);
  825. IM_ASSERT(info->PhysicalDevice != VK_NULL_HANDLE);
  826. IM_ASSERT(info->Device != VK_NULL_HANDLE);
  827. IM_ASSERT(info->Queue != VK_NULL_HANDLE);
  828. IM_ASSERT(info->DescriptorPool != VK_NULL_HANDLE);
  829. IM_ASSERT(info->MinImageCount >= 2);
  830. IM_ASSERT(info->ImageCount >= info->MinImageCount);
  831. IM_ASSERT(render_pass != VK_NULL_HANDLE);
  832. g_VulkanInitInfo = *info;
  833. g_RenderPass = render_pass;
  834. ImGui_ImplVulkan_CreateDeviceObjects();
  835. // Our render function expect RendererUserData to be storing the window render buffer we need (for the main viewport we won't use ->Window)
  836. ImGuiViewport* main_viewport = ImGui::GetMainViewport();
  837. main_viewport->RendererUserData = IM_NEW(ImGuiViewportDataVulkan)();
  838. if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
  839. ImGui_ImplVulkan_InitPlatformInterface();
  840. return true;
  841. }
  842. void ImGui_ImplVulkan_Shutdown()
  843. {
  844. // First destroy objects in all viewports
  845. ImGui_ImplVulkan_DestroyDeviceObjects();
  846. // Manually delete main viewport render data in-case we haven't initialized for viewports
  847. ImGuiViewport* main_viewport = ImGui::GetMainViewport();
  848. if (ImGuiViewportDataVulkan* data = (ImGuiViewportDataVulkan*)main_viewport->RendererUserData)
  849. IM_DELETE(data);
  850. main_viewport->RendererUserData = NULL;
  851. // Clean up windows
  852. ImGui_ImplVulkan_ShutdownPlatformInterface();
  853. }
  854. void ImGui_ImplVulkan_NewFrame()
  855. {
  856. }
  857. void ImGui_ImplVulkan_SetMinImageCount(uint32_t min_image_count)
  858. {
  859. IM_ASSERT(min_image_count >= 2);
  860. if (g_VulkanInitInfo.MinImageCount == min_image_count)
  861. return;
  862. IM_ASSERT(0); // FIXME-VIEWPORT: Unsupported. Need to recreate all swap chains!
  863. ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo;
  864. VkResult err = vkDeviceWaitIdle(v->Device);
  865. check_vk_result(err);
  866. ImGui_ImplVulkanH_DestroyAllViewportsRenderBuffers(v->Device, v->Allocator);
  867. g_VulkanInitInfo.MinImageCount = min_image_count;
  868. }
  869. //-------------------------------------------------------------------------
  870. // Internal / Miscellaneous Vulkan Helpers
  871. // (Used by example's main.cpp. Used by multi-viewport features. PROBABLY NOT used by your own app.)
  872. //-------------------------------------------------------------------------
  873. // You probably do NOT need to use or care about those functions.
  874. // Those functions only exist because:
  875. // 1) they facilitate the readability and maintenance of the multiple main.cpp examples files.
  876. // 2) the upcoming multi-viewport feature will need them internally.
  877. // Generally we avoid exposing any kind of superfluous high-level helpers in the bindings,
  878. // but it is too much code to duplicate everywhere so we exceptionally expose them.
  879. //
  880. // Your engine/app will likely _already_ have code to setup all that stuff (swap chain, render pass, frame buffers, etc.).
  881. // You may read this code to learn about Vulkan, but it is recommended you use you own custom tailored code to do equivalent work.
  882. // (The ImGui_ImplVulkanH_XXX functions do not interact with any of the state used by the regular ImGui_ImplVulkan_XXX functions)
  883. //-------------------------------------------------------------------------
  884. VkSurfaceFormatKHR ImGui_ImplVulkanH_SelectSurfaceFormat(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkFormat* request_formats, int request_formats_count, VkColorSpaceKHR request_color_space)
  885. {
  886. IM_ASSERT(request_formats != NULL);
  887. IM_ASSERT(request_formats_count > 0);
  888. // Per Spec Format and View Format are expected to be the same unless VK_IMAGE_CREATE_MUTABLE_BIT was set at image creation
  889. // Assuming that the default behavior is without setting this bit, there is no need for separate Swapchain image and image view format
  890. // Additionally several new color spaces were introduced with Vulkan Spec v1.0.40,
  891. // hence we must make sure that a format with the mostly available color space, VK_COLOR_SPACE_SRGB_NONLINEAR_KHR, is found and used.
  892. uint32_t avail_count;
  893. vkGetPhysicalDeviceSurfaceFormatsKHR(physical_device, surface, &avail_count, NULL);
  894. ImVector<VkSurfaceFormatKHR> avail_format;
  895. avail_format.resize((int)avail_count);
  896. vkGetPhysicalDeviceSurfaceFormatsKHR(physical_device, surface, &avail_count, avail_format.Data);
  897. // First check if only one format, VK_FORMAT_UNDEFINED, is available, which would imply that any format is available
  898. if (avail_count == 1)
  899. {
  900. if (avail_format[0].format == VK_FORMAT_UNDEFINED)
  901. {
  902. VkSurfaceFormatKHR ret;
  903. ret.format = request_formats[0];
  904. ret.colorSpace = request_color_space;
  905. return ret;
  906. }
  907. else
  908. {
  909. // No point in searching another format
  910. return avail_format[0];
  911. }
  912. }
  913. else
  914. {
  915. // Request several formats, the first found will be used
  916. for (int request_i = 0; request_i < request_formats_count; request_i++)
  917. for (uint32_t avail_i = 0; avail_i < avail_count; avail_i++)
  918. if (avail_format[avail_i].format == request_formats[request_i] && avail_format[avail_i].colorSpace == request_color_space)
  919. return avail_format[avail_i];
  920. // If none of the requested image formats could be found, use the first available
  921. return avail_format[0];
  922. }
  923. }
  924. VkPresentModeKHR ImGui_ImplVulkanH_SelectPresentMode(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkPresentModeKHR* request_modes, int request_modes_count)
  925. {
  926. IM_ASSERT(request_modes != NULL);
  927. IM_ASSERT(request_modes_count > 0);
  928. // Request a certain mode and confirm that it is available. If not use VK_PRESENT_MODE_FIFO_KHR which is mandatory
  929. uint32_t avail_count = 0;
  930. vkGetPhysicalDeviceSurfacePresentModesKHR(physical_device, surface, &avail_count, NULL);
  931. ImVector<VkPresentModeKHR> avail_modes;
  932. avail_modes.resize((int)avail_count);
  933. vkGetPhysicalDeviceSurfacePresentModesKHR(physical_device, surface, &avail_count, avail_modes.Data);
  934. //for (uint32_t avail_i = 0; avail_i < avail_count; avail_i++)
  935. // printf("[vulkan] avail_modes[%d] = %d\n", avail_i, avail_modes[avail_i]);
  936. for (int request_i = 0; request_i < request_modes_count; request_i++)
  937. for (uint32_t avail_i = 0; avail_i < avail_count; avail_i++)
  938. if (request_modes[request_i] == avail_modes[avail_i])
  939. return request_modes[request_i];
  940. return VK_PRESENT_MODE_FIFO_KHR; // Always available
  941. }
  942. void ImGui_ImplVulkanH_CreateWindowCommandBuffers(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_Window* wd, uint32_t queue_family, const VkAllocationCallbacks* allocator)
  943. {
  944. IM_ASSERT(physical_device != VK_NULL_HANDLE && device != VK_NULL_HANDLE);
  945. (void)physical_device;
  946. (void)allocator;
  947. // Create Command Buffers
  948. VkResult err;
  949. for (uint32_t i = 0; i < wd->ImageCount; i++)
  950. {
  951. ImGui_ImplVulkanH_Frame* fd = &wd->Frames[i];
  952. ImGui_ImplVulkanH_FrameSemaphores* fsd = &wd->FrameSemaphores[i];
  953. {
  954. VkCommandPoolCreateInfo info = {};
  955. info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
  956. info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
  957. info.queueFamilyIndex = queue_family;
  958. err = vkCreateCommandPool(device, &info, allocator, &fd->CommandPool);
  959. check_vk_result(err);
  960. }
  961. {
  962. VkCommandBufferAllocateInfo info = {};
  963. info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
  964. info.commandPool = fd->CommandPool;
  965. info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
  966. info.commandBufferCount = 1;
  967. err = vkAllocateCommandBuffers(device, &info, &fd->CommandBuffer);
  968. check_vk_result(err);
  969. }
  970. {
  971. VkFenceCreateInfo info = {};
  972. info.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
  973. info.flags = VK_FENCE_CREATE_SIGNALED_BIT;
  974. err = vkCreateFence(device, &info, allocator, &fd->Fence);
  975. check_vk_result(err);
  976. }
  977. {
  978. VkSemaphoreCreateInfo info = {};
  979. info.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
  980. err = vkCreateSemaphore(device, &info, allocator, &fsd->ImageAcquiredSemaphore);
  981. check_vk_result(err);
  982. err = vkCreateSemaphore(device, &info, allocator, &fsd->RenderCompleteSemaphore);
  983. check_vk_result(err);
  984. }
  985. }
  986. }
  987. int ImGui_ImplVulkanH_GetMinImageCountFromPresentMode(VkPresentModeKHR present_mode)
  988. {
  989. if (present_mode == VK_PRESENT_MODE_MAILBOX_KHR)
  990. return 3;
  991. if (present_mode == VK_PRESENT_MODE_FIFO_KHR || present_mode == VK_PRESENT_MODE_FIFO_RELAXED_KHR)
  992. return 2;
  993. if (present_mode == VK_PRESENT_MODE_IMMEDIATE_KHR)
  994. return 1;
  995. IM_ASSERT(0);
  996. return 1;
  997. }
  998. // Also destroy old swap chain and in-flight frames data, if any.
  999. void ImGui_ImplVulkanH_CreateWindowSwapChain(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_Window* wd, const VkAllocationCallbacks* allocator, int w, int h, uint32_t min_image_count)
  1000. {
  1001. VkResult err;
  1002. VkSwapchainKHR old_swapchain = wd->Swapchain;
  1003. wd->Swapchain = NULL;
  1004. err = vkDeviceWaitIdle(device);
  1005. check_vk_result(err);
  1006. // We don't use ImGui_ImplVulkanH_DestroyWindow() because we want to preserve the old swapchain to create the new one.
  1007. // Destroy old Framebuffer
  1008. for (uint32_t i = 0; i < wd->ImageCount; i++)
  1009. {
  1010. ImGui_ImplVulkanH_DestroyFrame(device, &wd->Frames[i], allocator);
  1011. ImGui_ImplVulkanH_DestroyFrameSemaphores(device, &wd->FrameSemaphores[i], allocator);
  1012. }
  1013. IM_FREE(wd->Frames);
  1014. IM_FREE(wd->FrameSemaphores);
  1015. wd->Frames = NULL;
  1016. wd->FrameSemaphores = NULL;
  1017. wd->ImageCount = 0;
  1018. if (wd->RenderPass)
  1019. vkDestroyRenderPass(device, wd->RenderPass, allocator);
  1020. if (wd->Pipeline)
  1021. vkDestroyPipeline(device, wd->Pipeline, allocator);
  1022. // If min image count was not specified, request different count of images dependent on selected present mode
  1023. if (min_image_count == 0)
  1024. min_image_count = ImGui_ImplVulkanH_GetMinImageCountFromPresentMode(wd->PresentMode);
  1025. // Create Swapchain
  1026. {
  1027. VkSwapchainCreateInfoKHR info = {};
  1028. info.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
  1029. info.surface = wd->Surface;
  1030. info.minImageCount = min_image_count;
  1031. info.imageFormat = wd->SurfaceFormat.format;
  1032. info.imageColorSpace = wd->SurfaceFormat.colorSpace;
  1033. info.imageArrayLayers = 1;
  1034. info.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
  1035. info.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE; // Assume that graphics family == present family
  1036. info.preTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
  1037. info.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
  1038. info.presentMode = wd->PresentMode;
  1039. info.clipped = VK_TRUE;
  1040. info.oldSwapchain = old_swapchain;
  1041. VkSurfaceCapabilitiesKHR cap;
  1042. err = vkGetPhysicalDeviceSurfaceCapabilitiesKHR(physical_device, wd->Surface, &cap);
  1043. check_vk_result(err);
  1044. if (info.minImageCount < cap.minImageCount)
  1045. info.minImageCount = cap.minImageCount;
  1046. else if (cap.maxImageCount != 0 && info.minImageCount > cap.maxImageCount)
  1047. info.minImageCount = cap.maxImageCount;
  1048. if (cap.currentExtent.width == 0xffffffff)
  1049. {
  1050. info.imageExtent.width = wd->Width = w;
  1051. info.imageExtent.height = wd->Height = h;
  1052. }
  1053. else
  1054. {
  1055. info.imageExtent.width = wd->Width = cap.currentExtent.width;
  1056. info.imageExtent.height = wd->Height = cap.currentExtent.height;
  1057. }
  1058. err = vkCreateSwapchainKHR(device, &info, allocator, &wd->Swapchain);
  1059. check_vk_result(err);
  1060. err = vkGetSwapchainImagesKHR(device, wd->Swapchain, &wd->ImageCount, NULL);
  1061. check_vk_result(err);
  1062. VkImage backbuffers[16] = {};
  1063. IM_ASSERT(wd->ImageCount >= min_image_count);
  1064. IM_ASSERT(wd->ImageCount < IM_ARRAYSIZE(backbuffers));
  1065. err = vkGetSwapchainImagesKHR(device, wd->Swapchain, &wd->ImageCount, backbuffers);
  1066. check_vk_result(err);
  1067. IM_ASSERT(wd->Frames == NULL);
  1068. wd->Frames = (ImGui_ImplVulkanH_Frame*)IM_ALLOC(sizeof(ImGui_ImplVulkanH_Frame) * wd->ImageCount);
  1069. wd->FrameSemaphores = (ImGui_ImplVulkanH_FrameSemaphores*)IM_ALLOC(sizeof(ImGui_ImplVulkanH_FrameSemaphores) * wd->ImageCount);
  1070. memset(wd->Frames, 0, sizeof(wd->Frames[0]) * wd->ImageCount);
  1071. memset(wd->FrameSemaphores, 0, sizeof(wd->FrameSemaphores[0]) * wd->ImageCount);
  1072. for (uint32_t i = 0; i < wd->ImageCount; i++)
  1073. wd->Frames[i].Backbuffer = backbuffers[i];
  1074. }
  1075. if (old_swapchain)
  1076. vkDestroySwapchainKHR(device, old_swapchain, allocator);
  1077. // Create the Render Pass
  1078. {
  1079. VkAttachmentDescription attachment = {};
  1080. attachment.format = wd->SurfaceFormat.format;
  1081. attachment.samples = VK_SAMPLE_COUNT_1_BIT;
  1082. attachment.loadOp = wd->ClearEnable ? VK_ATTACHMENT_LOAD_OP_CLEAR : VK_ATTACHMENT_LOAD_OP_DONT_CARE;
  1083. attachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
  1084. attachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
  1085. attachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
  1086. attachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
  1087. attachment.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
  1088. VkAttachmentReference color_attachment = {};
  1089. color_attachment.attachment = 0;
  1090. color_attachment.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
  1091. VkSubpassDescription subpass = {};
  1092. subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
  1093. subpass.colorAttachmentCount = 1;
  1094. subpass.pColorAttachments = &color_attachment;
  1095. VkSubpassDependency dependency = {};
  1096. dependency.srcSubpass = VK_SUBPASS_EXTERNAL;
  1097. dependency.dstSubpass = 0;
  1098. dependency.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
  1099. dependency.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
  1100. dependency.srcAccessMask = 0;
  1101. dependency.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
  1102. VkRenderPassCreateInfo info = {};
  1103. info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
  1104. info.attachmentCount = 1;
  1105. info.pAttachments = &attachment;
  1106. info.subpassCount = 1;
  1107. info.pSubpasses = &subpass;
  1108. info.dependencyCount = 1;
  1109. info.pDependencies = &dependency;
  1110. err = vkCreateRenderPass(device, &info, allocator, &wd->RenderPass);
  1111. check_vk_result(err);
  1112. // We do not create a pipeline by default as this is also used by examples' main.cpp,
  1113. // but secondary viewport in multi-viewport mode may want to create one with:
  1114. //ImGui_ImplVulkan_CreatePipeline(device, allocator, VK_NULL_HANDLE, wd->RenderPass, VK_SAMPLE_COUNT_1_BIT, &wd->Pipeline);
  1115. }
  1116. // Create The Image Views
  1117. {
  1118. VkImageViewCreateInfo info = {};
  1119. info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
  1120. info.viewType = VK_IMAGE_VIEW_TYPE_2D;
  1121. info.format = wd->SurfaceFormat.format;
  1122. info.components.r = VK_COMPONENT_SWIZZLE_R;
  1123. info.components.g = VK_COMPONENT_SWIZZLE_G;
  1124. info.components.b = VK_COMPONENT_SWIZZLE_B;
  1125. info.components.a = VK_COMPONENT_SWIZZLE_A;
  1126. VkImageSubresourceRange image_range = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 };
  1127. info.subresourceRange = image_range;
  1128. for (uint32_t i = 0; i < wd->ImageCount; i++)
  1129. {
  1130. ImGui_ImplVulkanH_Frame* fd = &wd->Frames[i];
  1131. info.image = fd->Backbuffer;
  1132. err = vkCreateImageView(device, &info, allocator, &fd->BackbufferView);
  1133. check_vk_result(err);
  1134. }
  1135. }
  1136. // Create Framebuffer
  1137. {
  1138. VkImageView attachment[1];
  1139. VkFramebufferCreateInfo info = {};
  1140. info.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
  1141. info.renderPass = wd->RenderPass;
  1142. info.attachmentCount = 1;
  1143. info.pAttachments = attachment;
  1144. info.width = wd->Width;
  1145. info.height = wd->Height;
  1146. info.layers = 1;
  1147. for (uint32_t i = 0; i < wd->ImageCount; i++)
  1148. {
  1149. ImGui_ImplVulkanH_Frame* fd = &wd->Frames[i];
  1150. attachment[0] = fd->BackbufferView;
  1151. err = vkCreateFramebuffer(device, &info, allocator, &fd->Framebuffer);
  1152. check_vk_result(err);
  1153. }
  1154. }
  1155. }
  1156. // Create or resize window
  1157. void ImGui_ImplVulkanH_CreateOrResizeWindow(VkInstance instance, VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_Window* wd, uint32_t queue_family, const VkAllocationCallbacks* allocator, int width, int height, uint32_t min_image_count)
  1158. {
  1159. (void)instance;
  1160. ImGui_ImplVulkanH_CreateWindowSwapChain(physical_device, device, wd, allocator, width, height, min_image_count);
  1161. ImGui_ImplVulkan_CreatePipeline(device, allocator, VK_NULL_HANDLE, wd->RenderPass, VK_SAMPLE_COUNT_1_BIT, &wd->Pipeline);
  1162. ImGui_ImplVulkanH_CreateWindowCommandBuffers(physical_device, device, wd, queue_family, allocator);
  1163. }
  1164. void ImGui_ImplVulkanH_DestroyWindow(VkInstance instance, VkDevice device, ImGui_ImplVulkanH_Window* wd, const VkAllocationCallbacks* allocator)
  1165. {
  1166. vkDeviceWaitIdle(device); // FIXME: We could wait on the Queue if we had the queue in wd-> (otherwise VulkanH functions can't use globals)
  1167. //vkQueueWaitIdle(g_Queue);
  1168. for (uint32_t i = 0; i < wd->ImageCount; i++)
  1169. {
  1170. ImGui_ImplVulkanH_DestroyFrame(device, &wd->Frames[i], allocator);
  1171. ImGui_ImplVulkanH_DestroyFrameSemaphores(device, &wd->FrameSemaphores[i], allocator);
  1172. }
  1173. IM_FREE(wd->Frames);
  1174. IM_FREE(wd->FrameSemaphores);
  1175. wd->Frames = NULL;
  1176. wd->FrameSemaphores = NULL;
  1177. vkDestroyPipeline(device, wd->Pipeline, allocator);
  1178. vkDestroyRenderPass(device, wd->RenderPass, allocator);
  1179. vkDestroySwapchainKHR(device, wd->Swapchain, allocator);
  1180. vkDestroySurfaceKHR(instance, wd->Surface, allocator);
  1181. *wd = ImGui_ImplVulkanH_Window();
  1182. }
  1183. void ImGui_ImplVulkanH_DestroyFrame(VkDevice device, ImGui_ImplVulkanH_Frame* fd, const VkAllocationCallbacks* allocator)
  1184. {
  1185. vkDestroyFence(device, fd->Fence, allocator);
  1186. vkFreeCommandBuffers(device, fd->CommandPool, 1, &fd->CommandBuffer);
  1187. vkDestroyCommandPool(device, fd->CommandPool, allocator);
  1188. fd->Fence = VK_NULL_HANDLE;
  1189. fd->CommandBuffer = VK_NULL_HANDLE;
  1190. fd->CommandPool = VK_NULL_HANDLE;
  1191. vkDestroyImageView(device, fd->BackbufferView, allocator);
  1192. vkDestroyFramebuffer(device, fd->Framebuffer, allocator);
  1193. }
  1194. void ImGui_ImplVulkanH_DestroyFrameSemaphores(VkDevice device, ImGui_ImplVulkanH_FrameSemaphores* fsd, const VkAllocationCallbacks* allocator)
  1195. {
  1196. vkDestroySemaphore(device, fsd->ImageAcquiredSemaphore, allocator);
  1197. vkDestroySemaphore(device, fsd->RenderCompleteSemaphore, allocator);
  1198. fsd->ImageAcquiredSemaphore = fsd->RenderCompleteSemaphore = VK_NULL_HANDLE;
  1199. }
  1200. void ImGui_ImplVulkanH_DestroyFrameRenderBuffers(VkDevice device, ImGui_ImplVulkanH_FrameRenderBuffers* buffers, const VkAllocationCallbacks* allocator)
  1201. {
  1202. if (buffers->VertexBuffer) { vkDestroyBuffer(device, buffers->VertexBuffer, allocator); buffers->VertexBuffer = VK_NULL_HANDLE; }
  1203. if (buffers->VertexBufferMemory) { vkFreeMemory(device, buffers->VertexBufferMemory, allocator); buffers->VertexBufferMemory = VK_NULL_HANDLE; }
  1204. if (buffers->IndexBuffer) { vkDestroyBuffer(device, buffers->IndexBuffer, allocator); buffers->IndexBuffer = VK_NULL_HANDLE; }
  1205. if (buffers->IndexBufferMemory) { vkFreeMemory(device, buffers->IndexBufferMemory, allocator); buffers->IndexBufferMemory = VK_NULL_HANDLE; }
  1206. buffers->VertexBufferSize = 0;
  1207. buffers->IndexBufferSize = 0;
  1208. }
  1209. void ImGui_ImplVulkanH_DestroyWindowRenderBuffers(VkDevice device, ImGui_ImplVulkanH_WindowRenderBuffers* buffers, const VkAllocationCallbacks* allocator)
  1210. {
  1211. for (uint32_t n = 0; n < buffers->Count; n++)
  1212. ImGui_ImplVulkanH_DestroyFrameRenderBuffers(device, &buffers->FrameRenderBuffers[n], allocator);
  1213. IM_FREE(buffers->FrameRenderBuffers);
  1214. buffers->FrameRenderBuffers = NULL;
  1215. buffers->Index = 0;
  1216. buffers->Count = 0;
  1217. }
  1218. void ImGui_ImplVulkanH_DestroyAllViewportsRenderBuffers(VkDevice device, const VkAllocationCallbacks* allocator)
  1219. {
  1220. ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
  1221. for (int n = 0; n < platform_io.Viewports.Size; n++)
  1222. if (ImGuiViewportDataVulkan* data = (ImGuiViewportDataVulkan*)platform_io.Viewports[n]->RendererUserData)
  1223. ImGui_ImplVulkanH_DestroyWindowRenderBuffers(device, &data->RenderBuffers, allocator);
  1224. }
  1225. //--------------------------------------------------------------------------------------------------------
  1226. // MULTI-VIEWPORT / PLATFORM INTERFACE SUPPORT
  1227. // This is an _advanced_ and _optional_ feature, allowing the back-end to create and handle multiple viewports simultaneously.
  1228. // If you are new to dear imgui or creating a new binding for dear imgui, it is recommended that you completely ignore this section first..
  1229. //--------------------------------------------------------------------------------------------------------
  1230. static void ImGui_ImplVulkan_CreateWindow(ImGuiViewport* viewport)
  1231. {
  1232. ImGuiViewportDataVulkan* data = IM_NEW(ImGuiViewportDataVulkan)();
  1233. viewport->RendererUserData = data;
  1234. ImGui_ImplVulkanH_Window* wd = &data->Window;
  1235. ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo;
  1236. // Create surface
  1237. ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
  1238. VkResult err = (VkResult)platform_io.Platform_CreateVkSurface(viewport, (ImU64)v->Instance, (const void*)v->Allocator, (ImU64*)&wd->Surface);
  1239. check_vk_result(err);
  1240. // Check for WSI support
  1241. VkBool32 res;
  1242. vkGetPhysicalDeviceSurfaceSupportKHR(v->PhysicalDevice, v->QueueFamily, wd->Surface, &res);
  1243. if (res != VK_TRUE)
  1244. {
  1245. IM_ASSERT(0); // Error: no WSI support on physical device
  1246. return;
  1247. }
  1248. // Select Surface Format
  1249. const VkFormat requestSurfaceImageFormat[] = { VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM };
  1250. const VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
  1251. wd->SurfaceFormat = ImGui_ImplVulkanH_SelectSurfaceFormat(v->PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace);
  1252. // Select Present Mode
  1253. // FIXME-VULKAN: Even thought mailbox seems to get us maximum framerate with a single window, it halves framerate with a second window etc. (w/ Nvidia and SDK 1.82.1)
  1254. VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_MAILBOX_KHR, VK_PRESENT_MODE_IMMEDIATE_KHR, VK_PRESENT_MODE_FIFO_KHR };
  1255. wd->PresentMode = ImGui_ImplVulkanH_SelectPresentMode(v->PhysicalDevice, wd->Surface, &present_modes[0], IM_ARRAYSIZE(present_modes));
  1256. //printf("[vulkan] Secondary window selected PresentMode = %d\n", wd->PresentMode);
  1257. // Create SwapChain, RenderPass, Framebuffer, etc.
  1258. wd->ClearEnable = (viewport->Flags & ImGuiViewportFlags_NoRendererClear) ? false : true;
  1259. ImGui_ImplVulkanH_CreateOrResizeWindow(v->Instance, v->PhysicalDevice, v->Device, wd, v->QueueFamily, v->Allocator, (int)viewport->Size.x, (int)viewport->Size.y, v->MinImageCount);
  1260. data->WindowOwned = true;
  1261. }
  1262. static void ImGui_ImplVulkan_DestroyWindow(ImGuiViewport* viewport)
  1263. {
  1264. // The main viewport (owned by the application) will always have RendererUserData == NULL since we didn't create the data for it.
  1265. if (ImGuiViewportDataVulkan* data = (ImGuiViewportDataVulkan*)viewport->RendererUserData)
  1266. {
  1267. ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo;
  1268. if (data->WindowOwned)
  1269. ImGui_ImplVulkanH_DestroyWindow(v->Instance, v->Device, &data->Window, v->Allocator);
  1270. ImGui_ImplVulkanH_DestroyWindowRenderBuffers(v->Device, &data->RenderBuffers, v->Allocator);
  1271. IM_DELETE(data);
  1272. }
  1273. viewport->RendererUserData = NULL;
  1274. }
  1275. static void ImGui_ImplVulkan_SetWindowSize(ImGuiViewport* viewport, ImVec2 size)
  1276. {
  1277. ImGuiViewportDataVulkan* data = (ImGuiViewportDataVulkan*)viewport->RendererUserData;
  1278. if (data == NULL) // This is NULL for the main viewport (which is left to the user/app to handle)
  1279. return;
  1280. ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo;
  1281. data->Window.ClearEnable = (viewport->Flags & ImGuiViewportFlags_NoRendererClear) ? false : true;
  1282. ImGui_ImplVulkanH_CreateOrResizeWindow(v->Instance, v->PhysicalDevice, v->Device, &data->Window, v->QueueFamily, v->Allocator, (int)size.x, (int)size.y, v->MinImageCount);
  1283. }
  1284. static void ImGui_ImplVulkan_RenderWindow(ImGuiViewport* viewport, void*)
  1285. {
  1286. ImGuiViewportDataVulkan* data = (ImGuiViewportDataVulkan*)viewport->RendererUserData;
  1287. ImGui_ImplVulkanH_Window* wd = &data->Window;
  1288. ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo;
  1289. VkResult err;
  1290. ImGui_ImplVulkanH_Frame* fd = &wd->Frames[wd->FrameIndex];
  1291. ImGui_ImplVulkanH_FrameSemaphores* fsd = &wd->FrameSemaphores[wd->SemaphoreIndex];
  1292. {
  1293. for (;;)
  1294. {
  1295. err = vkWaitForFences(v->Device, 1, &fd->Fence, VK_TRUE, 100);
  1296. if (err == VK_SUCCESS) break;
  1297. if (err == VK_TIMEOUT) continue;
  1298. check_vk_result(err);
  1299. }
  1300. {
  1301. err = vkAcquireNextImageKHR(v->Device, wd->Swapchain, UINT64_MAX, fsd->ImageAcquiredSemaphore, VK_NULL_HANDLE, &wd->FrameIndex);
  1302. check_vk_result(err);
  1303. fd = &wd->Frames[wd->FrameIndex];
  1304. }
  1305. {
  1306. err = vkResetCommandPool(v->Device, fd->CommandPool, 0);
  1307. check_vk_result(err);
  1308. VkCommandBufferBeginInfo info = {};
  1309. info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
  1310. info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
  1311. err = vkBeginCommandBuffer(fd->CommandBuffer, &info);
  1312. check_vk_result(err);
  1313. }
  1314. {
  1315. ImVec4 clear_color = ImVec4(0.0f, 0.0f, 0.0f, 1.0f);
  1316. memcpy(&wd->ClearValue.color.float32[0], &clear_color, 4 * sizeof(float));
  1317. VkRenderPassBeginInfo info = {};
  1318. info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
  1319. info.renderPass = wd->RenderPass;
  1320. info.framebuffer = fd->Framebuffer;
  1321. info.renderArea.extent.width = wd->Width;
  1322. info.renderArea.extent.height = wd->Height;
  1323. info.clearValueCount = (viewport->Flags & ImGuiViewportFlags_NoRendererClear) ? 0 : 1;
  1324. info.pClearValues = (viewport->Flags & ImGuiViewportFlags_NoRendererClear) ? NULL : &wd->ClearValue;
  1325. vkCmdBeginRenderPass(fd->CommandBuffer, &info, VK_SUBPASS_CONTENTS_INLINE);
  1326. }
  1327. }
  1328. ImGui_ImplVulkan_RenderDrawData(viewport->DrawData, fd->CommandBuffer, wd->Pipeline);
  1329. {
  1330. vkCmdEndRenderPass(fd->CommandBuffer);
  1331. {
  1332. VkPipelineStageFlags wait_stage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
  1333. VkSubmitInfo info = {};
  1334. info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
  1335. info.waitSemaphoreCount = 1;
  1336. info.pWaitSemaphores = &fsd->ImageAcquiredSemaphore;
  1337. info.pWaitDstStageMask = &wait_stage;
  1338. info.commandBufferCount = 1;
  1339. info.pCommandBuffers = &fd->CommandBuffer;
  1340. info.signalSemaphoreCount = 1;
  1341. info.pSignalSemaphores = &fsd->RenderCompleteSemaphore;
  1342. err = vkEndCommandBuffer(fd->CommandBuffer);
  1343. check_vk_result(err);
  1344. err = vkResetFences(v->Device, 1, &fd->Fence);
  1345. check_vk_result(err);
  1346. err = vkQueueSubmit(v->Queue, 1, &info, fd->Fence);
  1347. check_vk_result(err);
  1348. }
  1349. }
  1350. }
  1351. static void ImGui_ImplVulkan_SwapBuffers(ImGuiViewport* viewport, void*)
  1352. {
  1353. ImGuiViewportDataVulkan* data = (ImGuiViewportDataVulkan*)viewport->RendererUserData;
  1354. ImGui_ImplVulkanH_Window* wd = &data->Window;
  1355. ImGui_ImplVulkan_InitInfo* v = &g_VulkanInitInfo;
  1356. VkResult err;
  1357. uint32_t present_index = wd->FrameIndex;
  1358. ImGui_ImplVulkanH_FrameSemaphores* fsd = &wd->FrameSemaphores[wd->SemaphoreIndex];
  1359. VkPresentInfoKHR info = {};
  1360. info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
  1361. info.waitSemaphoreCount = 1;
  1362. info.pWaitSemaphores = &fsd->RenderCompleteSemaphore;
  1363. info.swapchainCount = 1;
  1364. info.pSwapchains = &wd->Swapchain;
  1365. info.pImageIndices = &present_index;
  1366. err = vkQueuePresentKHR(v->Queue, &info);
  1367. check_vk_result(err);
  1368. wd->FrameIndex = (wd->FrameIndex + 1) % wd->ImageCount; // This is for the next vkWaitForFences()
  1369. wd->SemaphoreIndex = (wd->SemaphoreIndex + 1) % wd->ImageCount; // Now we can use the next set of semaphores
  1370. }
  1371. void ImGui_ImplVulkan_InitPlatformInterface()
  1372. {
  1373. ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
  1374. if (ImGui::GetIO().ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
  1375. IM_ASSERT(platform_io.Platform_CreateVkSurface != NULL && "Platform needs to setup the CreateVkSurface handler.");
  1376. platform_io.Renderer_CreateWindow = ImGui_ImplVulkan_CreateWindow;
  1377. platform_io.Renderer_DestroyWindow = ImGui_ImplVulkan_DestroyWindow;
  1378. platform_io.Renderer_SetWindowSize = ImGui_ImplVulkan_SetWindowSize;
  1379. platform_io.Renderer_RenderWindow = ImGui_ImplVulkan_RenderWindow;
  1380. platform_io.Renderer_SwapBuffers = ImGui_ImplVulkan_SwapBuffers;
  1381. }
  1382. void ImGui_ImplVulkan_ShutdownPlatformInterface()
  1383. {
  1384. ImGui::DestroyPlatformWindows();
  1385. }