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Examples: Vulkan: Added calls to supports runtime changing back buffer count. (#2071)

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This commit is contained in:
MindSpunk
2018-09-09 16:04:44 +10:00
committed by omar
parent 1c3311e4d6
commit b88a3b2711
4 changed files with 150 additions and 36 deletions
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87
examples/imgui_impl_vulkan.cpp
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@ -64,8 +64,8 @@ struct FrameDataForRender
VkBuffer VertexBuffer;
VkBuffer IndexBuffer;
};
static int g_FrameIndex = 0;
static FrameDataForRender g_FramesDataBuffers[IMGUI_VK_QUEUED_FRAMES] = {};
static int g_FrameIndex = 0;
static ImVector<FrameDataForRender> g_FramesDataBuffers = {};
// Font data
static VkSampler g_FontSampler = VK_NULL_HANDLE;
@ -240,7 +240,7 @@ void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer comm
VkResult err;
FrameDataForRender* fd = &g_FramesDataBuffers[g_FrameIndex];
g_FrameIndex = (g_FrameIndex + 1) % IM_ARRAYSIZE(g_FramesDataBuffers);
g_FrameIndex = (g_FrameIndex + 1) % g_FramesDataBuffers.size();
// Create the Vertex and Index buffers:
size_t vertex_size = draw_data->TotalVtxCount * sizeof(ImDrawVert);
@ -728,15 +728,6 @@ void ImGui_ImplVulkan_InvalidateDeviceObjects()
{
ImGui_ImplVulkan_InvalidateFontUploadObjects();
for (int i = 0; i < IM_ARRAYSIZE(g_FramesDataBuffers); i++)
{
FrameDataForRender* fd = &g_FramesDataBuffers[i];
if (fd->VertexBuffer) { vkDestroyBuffer (g_Device, fd->VertexBuffer, g_Allocator); fd->VertexBuffer = VK_NULL_HANDLE; }
if (fd->VertexBufferMemory) { vkFreeMemory (g_Device, fd->VertexBufferMemory, g_Allocator); fd->VertexBufferMemory = VK_NULL_HANDLE; }
if (fd->IndexBuffer) { vkDestroyBuffer (g_Device, fd->IndexBuffer, g_Allocator); fd->IndexBuffer = VK_NULL_HANDLE; }
if (fd->IndexBufferMemory) { vkFreeMemory (g_Device, fd->IndexBufferMemory, g_Allocator); fd->IndexBufferMemory = VK_NULL_HANDLE; }
}
if (g_FontView) { vkDestroyImageView(g_Device, g_FontView, g_Allocator); g_FontView = VK_NULL_HANDLE; }
if (g_FontImage) { vkDestroyImage(g_Device, g_FontImage, g_Allocator); g_FontImage = VK_NULL_HANDLE; }
if (g_FontMemory) { vkFreeMemory(g_Device, g_FontMemory, g_Allocator); g_FontMemory = VK_NULL_HANDLE; }
@ -746,6 +737,18 @@ void ImGui_ImplVulkan_InvalidateDeviceObjects()
if (g_Pipeline) { vkDestroyPipeline(g_Device, g_Pipeline, g_Allocator); g_Pipeline = VK_NULL_HANDLE; }
}
void ImGui_ImplVulkan_InvalidateFrameDeviceObjects()
{
for (int i = 0; i < g_FramesDataBuffers.size(); i++)
{
FrameDataForRender* fd = &g_FramesDataBuffers[i];
if (fd->VertexBuffer) { vkDestroyBuffer(g_Device, fd->VertexBuffer, g_Allocator); fd->VertexBuffer = VK_NULL_HANDLE; }
if (fd->VertexBufferMemory) { vkFreeMemory (g_Device, fd->VertexBufferMemory, g_Allocator); fd->VertexBufferMemory = VK_NULL_HANDLE; }
if (fd->IndexBuffer) { vkDestroyBuffer(g_Device, fd->IndexBuffer, g_Allocator); fd->IndexBuffer = VK_NULL_HANDLE; }
if (fd->IndexBufferMemory) { vkFreeMemory (g_Device, fd->IndexBufferMemory, g_Allocator); fd->IndexBufferMemory = VK_NULL_HANDLE; }
}
}
bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass render_pass)
{
ImGuiIO& io = ImGui::GetIO();
@ -768,6 +771,11 @@ bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass rend
g_DescriptorPool = info->DescriptorPool;
g_Allocator = info->Allocator;
g_CheckVkResultFn = info->CheckVkResultFn;
g_FramesDataBuffers.resize(info->QueuedFrames);
for (int i = 0; i < g_FramesDataBuffers.size(); i++)
{
g_FramesDataBuffers[i] = FrameDataForRender();
}
ImGui_ImplVulkan_CreateDeviceObjects();
@ -776,6 +784,7 @@ bool ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info, VkRenderPass rend
void ImGui_ImplVulkan_Shutdown()
{
ImGui_ImplVulkan_InvalidateFrameDeviceObjects();
ImGui_ImplVulkan_InvalidateDeviceObjects();
}
@ -783,6 +792,24 @@ void ImGui_ImplVulkan_NewFrame()
{
}
void ImGui_ImplVulkan_SetQueuedFramesCount(uint32_t count)
{
if (count == g_FramesDataBuffers.size())
{
return;
}
ImGui_ImplVulkan_InvalidateFrameDeviceObjects();
uint32_t old_size = g_FramesDataBuffers.size();
g_FramesDataBuffers.resize(count);
for (uint32_t i = old_size; i < count; i++)
{
g_FramesDataBuffers[i] = FrameDataForRender();
}
g_FrameIndex = 0;
}
//-------------------------------------------------------------------------
// Internal / Miscellaneous Vulkan Helpers
@ -901,7 +928,7 @@ void ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(VkPhysicalDevice physical_
// Create Command Buffers
VkResult err;
for (int i = 0; i < IM_ARRAYSIZE(wd->Frames); i++)
for (int i = 0; i < wd->Frames.size(); i++)
{
ImGui_ImplVulkanH_FrameData* fd = &wd->Frames[i];
{
@ -951,10 +978,8 @@ int ImGui_ImplVulkanH_GetMinImageCountFromPresentMode(VkPresentModeKHR present_m
return 1;
}
void ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator, int w, int h)
void ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator, int w, int h, uint32_t min_image_count)
{
uint32_t min_image_count = 2; // FIXME: this should become a function parameter
VkResult err;
VkSwapchainKHR old_swapchain = wd->Swapchain;
err = vkDeviceWaitIdle(device);
@ -1015,7 +1040,18 @@ void ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(VkPhysicalDevice
err = vkGetSwapchainImagesKHR(device, wd->Swapchain, &wd->BackBufferCount, NULL);
check_vk_result(err);
err = vkGetSwapchainImagesKHR(device, wd->Swapchain, &wd->BackBufferCount, wd->BackBuffer);
check_vk_result(err);
check_vk_result(err);
for (uint32_t i = 0; i < wd->Frames.size(); i++)
{
ImGui_ImplVulkanH_DestroyFrameData(g_Instance, device, &wd->Frames[i], allocator);
}
uint32_t old_size = wd->Frames.size();
wd->Frames.resize(wd->BackBufferCount);
for (uint32_t i = 0; i < wd->Frames.size(); i++)
{
wd->Frames[i] = ImGui_ImplVulkanH_FrameData();
}
}
if (old_swapchain)
vkDestroySwapchainKHR(device, old_swapchain, allocator);
@ -1102,14 +1138,10 @@ void ImGui_ImplVulkanH_DestroyWindowData(VkInstance instance, VkDevice device, I
vkDeviceWaitIdle(device); // FIXME: We could wait on the Queue if we had the queue in wd-> (otherwise VulkanH functions can't use globals)
//vkQueueWaitIdle(g_Queue);
for (int i = 0; i < IM_ARRAYSIZE(wd->Frames); i++)
for (int i = 0; i < wd->Frames.size(); i++)
{
ImGui_ImplVulkanH_FrameData* fd = &wd->Frames[i];
vkDestroyFence(device, fd->Fence, allocator);
vkFreeCommandBuffers(device, fd->CommandPool, 1, &fd->CommandBuffer);
vkDestroyCommandPool(device, fd->CommandPool, allocator);
vkDestroySemaphore(device, fd->ImageAcquiredSemaphore, allocator);
vkDestroySemaphore(device, fd->RenderCompleteSemaphore, allocator);
ImGui_ImplVulkanH_DestroyFrameData(instance, device, fd, allocator);
}
for (uint32_t i = 0; i < wd->BackBufferCount; i++)
{
@ -1121,3 +1153,12 @@ void ImGui_ImplVulkanH_DestroyWindowData(VkInstance instance, VkDevice device, I
vkDestroySurfaceKHR(instance, wd->Surface, allocator);
*wd = ImGui_ImplVulkanH_WindowData();
}
void ImGui_ImplVulkanH_DestroyFrameData(VkInstance instance, VkDevice device, ImGui_ImplVulkanH_FrameData* fd, const VkAllocationCallbacks* allocator)
{
vkDestroyFence(device, fd->Fence, allocator);
vkFreeCommandBuffers(device, fd->CommandPool, 1, &fd->CommandBuffer);
vkDestroyCommandPool(device, fd->CommandPool, allocator);
vkDestroySemaphore(device, fd->ImageAcquiredSemaphore, allocator);
vkDestroySemaphore(device, fd->RenderCompleteSemaphore, allocator);
}