Drezil/imgui
1
0
Fork 0
mirror of https://github.com/Drezil/imgui.git synced 2025-07-06 04:58:47 +02:00
Code Issues Packages Projects Releases Wiki Activity

Examples: Vulkan: Coding style tweaks.

Browse Source
This commit is contained in:
ocornut
2016-04-03 17:32:53 +02:00
parent 9c513d4443
commit 0e7b9b8284
5 changed files with 188 additions and 234 deletions
Download Patch File Download Diff File Expand all files Collapse all files

110
examples/vulkan_example/main.cpp
View File

@ -3,8 +3,8 @@
#include <imgui.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdio.h> // printf, fprintf
#include <stdlib.h> // abort
#define GLFW_INCLUDE_NONE
#define GLFW_INCLUDE_VULKAN
#include <GLFW/glfw3.h>
@ -47,9 +47,10 @@ static VkClearValue g_ClearValue = {};
static void check_vk_result(VkResult err)
{
if(err == 0) return;
if (err == 0) return;
printf("VkResult %d\n", err);
if(err < 0) abort();
if (err < 0)
abort();
}
static void resize_vulkan(GLFWwindow* /*window*/, int w, int h)
@ -58,15 +59,17 @@ static void resize_vulkan(GLFWwindow* /*window*/, int w, int h)
VkSwapchainKHR old_swapchain = g_Swapchain;
err = vkDeviceWaitIdle(g_Device);
check_vk_result(err);
// Destroy old Framebuffer:
for(uint32_t i=0; i<g_BackBufferCount; i++)
if(g_BackBufferView[i])
for (uint32_t i=0; i<g_BackBufferCount; i++)
if (g_BackBufferView[i])
vkDestroyImageView(g_Device, g_BackBufferView[i], g_Allocator);
for(uint32_t i=0; i<g_BackBufferCount; i++)
if(g_Framebuffer[i])
for(uint32_t i=0; i<g_BackBufferCount; i++)
if (g_Framebuffer[i])
vkDestroyFramebuffer(g_Device, g_Framebuffer[i], g_Allocator);
if(g_RenderPass)
if (g_RenderPass)
vkDestroyRenderPass(g_Device, g_RenderPass, g_Allocator);
// Create Swapchain:
{
VkSwapchainCreateInfoKHR info = {};
@ -86,13 +89,15 @@ static void resize_vulkan(GLFWwindow* /*window*/, int w, int h)
err = vkGetPhysicalDeviceSurfaceCapabilitiesKHR(g_Gpu, g_Surface, &cap);
check_vk_result(err);
info.minImageCount = (cap.minImageCount + 2 < cap.maxImageCount) ? (cap.minImageCount + 2) : cap.maxImageCount;
if(cap.currentExtent.width == 0xffffffff){
if (cap.currentExtent.width == 0xffffffff)
{
fb_width = w;
fb_height = h;
info.imageExtent.width = fb_width;
info.imageExtent.height = fb_height;
}
else{
else
{
fb_width = cap.currentExtent.width;
fb_height = cap.currentExtent.height;
info.imageExtent.width = fb_width;
@ -105,8 +110,9 @@ static void resize_vulkan(GLFWwindow* /*window*/, int w, int h)
err = vkGetSwapchainImagesKHR(g_Device, g_Swapchain, &g_BackBufferCount, g_BackBuffer);
check_vk_result(err);
}
if(old_swapchain)
if (old_swapchain)
vkDestroySwapchainKHR(g_Device, old_swapchain, g_Allocator);
// Create the Render Pass:
{
VkAttachmentDescription attachment = {};
@ -134,6 +140,7 @@ static void resize_vulkan(GLFWwindow* /*window*/, int w, int h)
err = vkCreateRenderPass(g_Device, &info, g_Allocator, &g_RenderPass);
check_vk_result(err);
}
// Create The Image Views
{
VkImageViewCreateInfo info = {};
@ -145,12 +152,14 @@ static void resize_vulkan(GLFWwindow* /*window*/, int w, int h)
info.components.b = VK_COMPONENT_SWIZZLE_B;
info.components.a = VK_COMPONENT_SWIZZLE_A;
info.subresourceRange = g_ImageRange;
for(uint32_t i=0; i<g_BackBufferCount; i++){
for (uint32_t i = 0; i<g_BackBufferCount; i++)
{
info.image = g_BackBuffer[i];
err = vkCreateImageView(g_Device, &info, g_Allocator, &g_BackBufferView[i]);
check_vk_result(err);
}
}
// Create Framebuffer:
{
VkImageView attachment[1];
@ -162,7 +171,8 @@ static void resize_vulkan(GLFWwindow* /*window*/, int w, int h)
info.width = fb_width;
info.height = fb_height;
info.layers = 1;
for(uint32_t i=0; i<g_BackBufferCount; i++){
for (uint32_t i = 0; i<g_BackBufferCount; i++)
{
attachment[0] = g_BackBufferView[i];
err = vkCreateFramebuffer(g_Device, &info, g_Allocator, &g_Framebuffer[i]);
check_vk_result(err);
@ -173,9 +183,10 @@ static void resize_vulkan(GLFWwindow* /*window*/, int w, int h)
static void setup_vulkan(GLFWwindow* window)
{
VkResult err;
// Create Vulkan Instance
{
int glfw_extensions_count;
uint32_t glfw_extensions_count;
const char** glfw_extensions = glfwGetRequiredInstanceExtensions(&glfw_extensions_count);
VkInstanceCreateInfo create_info = {};
create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
@ -184,17 +195,20 @@ static void setup_vulkan(GLFWwindow* window)
err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
check_vk_result(err);
}
// Create Window Surface
{
err = glfwCreateWindowSurface(g_Instance, window, g_Allocator, &g_Surface);
check_vk_result(err);
}
// Get Gpu
// Get GPU
{
uint32_t count = 1;
err = vkEnumeratePhysicalDevices(g_Instance, &count, &g_Gpu);
check_vk_result(err);
}
// Create Logical Device
{
int device_extension_count = 1;
@ -217,6 +231,7 @@ static void setup_vulkan(GLFWwindow* window)
check_vk_result(err);
vkGetDeviceQueue(g_Device, g_QueueFamily, queue_index, &g_Queue);
}
// Create Framebuffers
{
int w, h;
@ -224,8 +239,10 @@ static void setup_vulkan(GLFWwindow* window)
resize_vulkan(window, w, h);
glfwSetFramebufferSizeCallback(window, resize_vulkan);
}
// Create Command Buffers
for(int i=0; i<IMGUI_VK_QUEUED_FRAMES; i++){
for (int i=0; i<IMGUI_VK_QUEUED_FRAMES; i++)
{
{
VkCommandPoolCreateInfo info = {};
info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
@ -257,20 +274,23 @@ static void setup_vulkan(GLFWwindow* window)
check_vk_result(err);
}
}
// Create Descriptor Pool
{
VkDescriptorPoolSize pool_size[11] = {
{VK_DESCRIPTOR_TYPE_SAMPLER, 1000},
{VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1000},
{VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, 1000},
{VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 1000},
{VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER, 1000},
{VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER, 1000},
{VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1000},
{VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 1000},
{VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC, 1000},
{VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC, 1000},
{VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT, 1000}};
VkDescriptorPoolSize pool_size[11] =
{
{ VK_DESCRIPTOR_TYPE_SAMPLER, 1000 },
{ VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1000 },
{ VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, 1000 },
{ VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 1000 },
{ VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER, 1000 },
{ VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER, 1000 },
{ VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1000 },
{ VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 1000 },
{ VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC, 1000 },
{ VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC, 1000 },
{ VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT, 1000 }
};
VkDescriptorPoolCreateInfo pool_info = {};
pool_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
pool_info.flags = VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT;
@ -285,13 +305,15 @@ static void setup_vulkan(GLFWwindow* window)
static void cleanup_vulkan()
{
vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
for(int i=0; i<IMGUI_VK_QUEUED_FRAMES; i++){
for (int i = 0; i < IMGUI_VK_QUEUED_FRAMES; i++)
{
vkDestroyFence(g_Device, g_Fence[i], g_Allocator);
vkFreeCommandBuffers(g_Device, g_CommandPool[i], 1, &g_CommandBuffer[i]);
vkDestroyCommandPool(g_Device, g_CommandPool[i], g_Allocator);
vkDestroySemaphore(g_Device, g_Semaphore[i], g_Allocator);
}
for(uint32_t i=0; i<g_BackBufferCount; i++){
for (uint32_t i = 0; i < g_BackBufferCount; i++)
{
vkDestroyImageView(g_Device, g_BackBufferView[i], g_Allocator);
vkDestroyFramebuffer(g_Device, g_Framebuffer[i], g_Allocator);
}
@ -305,18 +327,15 @@ static void cleanup_vulkan()
static void frame_begin()
{
VkResult err;
while(true){
while (true)
{
err = vkWaitForFences(g_Device, 1, &g_Fence[g_FrameIndex], VK_TRUE, 100);
if(err == VK_SUCCESS) break;
if(err == VK_TIMEOUT) continue;
if (err == VK_SUCCESS) break;
if (err == VK_TIMEOUT) continue;
check_vk_result(err);
}
{
err = vkAcquireNextImageKHR(
g_Device, g_Swapchain,
UINT64_MAX,
g_Semaphore[g_FrameIndex], VK_NULL_HANDLE,
&g_BackBufferIndex);
err = vkAcquireNextImageKHR(g_Device, g_Swapchain, UINT64_MAX, g_Semaphore[g_FrameIndex], VK_NULL_HANDLE, &g_BackBufferIndex);
check_vk_result(err);
}
{
@ -356,11 +375,7 @@ static void frame_end()
barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
barrier.image = g_BackBuffer[g_BackBufferIndex];
barrier.subresourceRange = g_ImageRange;
vkCmdPipelineBarrier(g_CommandBuffer[g_FrameIndex],
VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT,
VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT,
0,
0, NULL, 0, NULL, 1, &barrier);
vkCmdPipelineBarrier(g_CommandBuffer[g_FrameIndex], VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT, VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT, 0, 0, NULL, 0, NULL, 1, &barrier);
}
{
VkSubmitInfo info = {};
@ -391,7 +406,7 @@ static void frame_end()
check_vk_result(err);
check_vk_result(res);
}
g_FrameIndex = (g_FrameIndex)%IMGUI_VK_QUEUED_FRAMES;
g_FrameIndex = (g_FrameIndex) % IMGUI_VK_QUEUED_FRAMES;
}
static void error_callback(int error, const char* description)
@ -410,7 +425,8 @@ int main(int, char**)
GLFWwindow* window = glfwCreateWindow(1280, 720, "ImGui Vulkan example", NULL, NULL);
// Setup Vulkan
if(!glfwVulkanSupported()){
if (!glfwVulkanSupported())
{
printf("GLFW: Vulkan Not Supported\n");
return 1;
}
@ -508,9 +524,7 @@ int main(int, char**)
g_ClearValue.color.float32[3] = clear_color.w;
frame_begin();
ImGui_ImplGlfwVulkan_Render(g_CommandBuffer[g_FrameIndex]);
frame_end();
}