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imgui/examples/vulkan_example/imgui_impl_glfw_vulkan.cpp
ocornut 0e7b9b8284 Examples: Vulkan: Coding style tweaks.
2016-04-03 17:32:53 +02:00

936 lines
45 KiB
C++
Raw Blame History

// ImGui GLFW binding with Vulkan + shaders
// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
// If you use this binding you'll need to call 5 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXX_CreateFontsTexture(), ImGui_ImplXXXX_NewFrame(), ImGui_ImplXXXX_Render() and ImGui_ImplXXXX_Shutdown().
// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
// https://github.com/ocornut/imgui
#include <imgui.h>
// GLFW
#define GLFW_INCLUDE_NONE
#define GLFW_INCLUDE_VULKAN
#include <GLFW/glfw3.h>
#ifdef _WIN32
#undef APIENTRY
#define GLFW_EXPOSE_NATIVE_WIN32
#define GLFW_EXPOSE_NATIVE_WGL
#include <GLFW/glfw3native.h>
#endif
#include "imgui_impl_glfw_vulkan.h"
// GLFW Data
static GLFWwindow* g_Window = NULL;
static double g_Time = 0.0f;
static bool g_MousePressed[3] = { false, false, false };
static float g_MouseWheel = 0.0f;
// Vulkan Data
static VkAllocationCallbacks* g_Allocator = NULL;
static VkPhysicalDevice g_Gpu = VK_NULL_HANDLE;
static VkDevice g_Device = VK_NULL_HANDLE;
static VkRenderPass g_RenderPass = VK_NULL_HANDLE;
static VkPipelineCache g_PipelineCache = VK_NULL_HANDLE;
static VkDescriptorPool g_DescriptorPool = VK_NULL_HANDLE;
static void (*g_CheckVkResult)(VkResult err) = NULL;
static VkCommandBuffer g_CommandBuffer = VK_NULL_HANDLE;
static size_t g_BufferMemoryAlignment = 256;
static VkPipelineCreateFlags g_PipelineCreateFlags = 0;
static int g_FrameIndex = 0;
static VkDescriptorSetLayout g_DescriptorSetLayout = VK_NULL_HANDLE;
static VkPipelineLayout g_PipelineLayout = VK_NULL_HANDLE;
static VkDescriptorSet g_DescriptorSet = VK_NULL_HANDLE;
static VkPipeline g_Pipeline = VK_NULL_HANDLE;
static VkSampler g_FontSampler = VK_NULL_HANDLE;
static VkDeviceMemory g_FontMemory = VK_NULL_HANDLE;
static VkImage g_FontImage = VK_NULL_HANDLE;
static VkImageView g_FontView = VK_NULL_HANDLE;
static VkDeviceMemory g_VertexBufferMemory[IMGUI_VK_QUEUED_FRAMES] = {};
static VkDeviceMemory g_IndexBufferMemory[IMGUI_VK_QUEUED_FRAMES] = {};
static size_t g_VertexBufferSize[IMGUI_VK_QUEUED_FRAMES] = {};
static size_t g_IndexBufferSize[IMGUI_VK_QUEUED_FRAMES] = {};
static VkBuffer g_VertexBuffer[IMGUI_VK_QUEUED_FRAMES] = {};
static VkBuffer g_IndexBuffer[IMGUI_VK_QUEUED_FRAMES] = {};
static VkDeviceMemory g_UploadBufferMemory = VK_NULL_HANDLE;
static VkBuffer g_UploadBuffer = VK_NULL_HANDLE;
static unsigned char __glsl_shader_vert_spv[] =
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};
static unsigned int __glsl_shader_vert_spv_len = 1172;
static unsigned char __glsl_shader_frag_spv[] =
{
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0x0c, 0x00, 0x00, 0x00, 0x0e, 0x0a, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x20, 0x00, 0x04, 0x00, 0x90, 0x02, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x13, 0x00, 0x00, 0x00, 0x36, 0x00, 0x05, 0x00, 0x08, 0x00, 0x00, 0x00,
0x1f, 0x16, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x05, 0x00, 0x00,
0xf8, 0x00, 0x02, 0x00, 0x6b, 0x5d, 0x00, 0x00, 0x41, 0x00, 0x05, 0x00,
0x9b, 0x02, 0x00, 0x00, 0x8d, 0x1b, 0x00, 0x00, 0x35, 0x16, 0x00, 0x00,
0x0b, 0x0a, 0x00, 0x00, 0x3d, 0x00, 0x04, 0x00, 0x1d, 0x00, 0x00, 0x00,
0x0b, 0x40, 0x00, 0x00, 0x8d, 0x1b, 0x00, 0x00, 0x3d, 0x00, 0x04, 0x00,
0xfe, 0x01, 0x00, 0x00, 0xc0, 0x36, 0x00, 0x00, 0xec, 0x14, 0x00, 0x00,
0x41, 0x00, 0x05, 0x00, 0x90, 0x02, 0x00, 0x00, 0xc2, 0x43, 0x00, 0x00,
0x35, 0x16, 0x00, 0x00, 0x0e, 0x0a, 0x00, 0x00, 0x3d, 0x00, 0x04, 0x00,
0x13, 0x00, 0x00, 0x00, 0x02, 0x4e, 0x00, 0x00, 0xc2, 0x43, 0x00, 0x00,
0x57, 0x00, 0x05, 0x00, 0x1d, 0x00, 0x00, 0x00, 0xb9, 0x46, 0x00, 0x00,
0xc0, 0x36, 0x00, 0x00, 0x02, 0x4e, 0x00, 0x00, 0x85, 0x00, 0x05, 0x00,
0x1d, 0x00, 0x00, 0x00, 0xe4, 0x23, 0x00, 0x00, 0x0b, 0x40, 0x00, 0x00,
0xb9, 0x46, 0x00, 0x00, 0x3e, 0x00, 0x03, 0x00, 0x7a, 0x0c, 0x00, 0x00,
0xe4, 0x23, 0x00, 0x00, 0xfd, 0x00, 0x01, 0x00, 0x38, 0x00, 0x01, 0x00
};
static unsigned int __glsl_shader_frag_spv_len = 660;
static uint32_t ImGui_ImplGlfwVulkan_MemoryType(VkMemoryPropertyFlags properties, uint32_t type_bits)
{
VkPhysicalDeviceMemoryProperties prop;
vkGetPhysicalDeviceMemoryProperties(g_Gpu, &prop);
for (uint32_t i = 0; i < prop.memoryTypeCount; i++)
if ((prop.memoryTypes[i].propertyFlags & properties) == properties && type_bits & (1<<i))
return i;
return 0xffffffff; // Unable to find memoryType
}
static void ImGui_ImplGlfwVulkan_VkResult(VkResult err)
{
if (g_CheckVkResult)
g_CheckVkResult(err);
}
// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
void ImGui_ImplGlfwVulkan_RenderDrawLists(ImDrawData* draw_data)
{
VkResult err;
ImGuiIO& io = ImGui::GetIO();
// Create the Vertex Buffer:
size_t vertex_size = draw_data->TotalVtxCount * sizeof(ImDrawVert);
if (!g_VertexBuffer[g_FrameIndex] || g_VertexBufferSize[g_FrameIndex] < vertex_size)
{
if (g_VertexBuffer[g_FrameIndex])
vkDestroyBuffer(g_Device, g_VertexBuffer[g_FrameIndex], g_Allocator);
if (g_VertexBufferMemory[g_FrameIndex])
vkFreeMemory(g_Device, g_VertexBufferMemory[g_FrameIndex], g_Allocator);
size_t vertex_buffer_size = ((vertex_size-1) / g_BufferMemoryAlignment+1) * g_BufferMemoryAlignment;
VkBufferCreateInfo buffer_info = {};
buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
buffer_info.size = vertex_buffer_size;
buffer_info.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
err = vkCreateBuffer(g_Device, &buffer_info, g_Allocator, &g_VertexBuffer[g_FrameIndex]);
ImGui_ImplGlfwVulkan_VkResult(err);
VkMemoryRequirements req;
vkGetBufferMemoryRequirements(g_Device, g_VertexBuffer[g_FrameIndex], &req);
g_BufferMemoryAlignment = (g_BufferMemoryAlignment > req.alignment) ? g_BufferMemoryAlignment : req.alignment;
VkMemoryAllocateInfo alloc_info = {};
alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
alloc_info.allocationSize = req.size;
alloc_info.memoryTypeIndex = ImGui_ImplGlfwVulkan_MemoryType(VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, req.memoryTypeBits);
err = vkAllocateMemory(g_Device, &alloc_info, g_Allocator, &g_VertexBufferMemory[g_FrameIndex]);
ImGui_ImplGlfwVulkan_VkResult(err);
err = vkBindBufferMemory(g_Device, g_VertexBuffer[g_FrameIndex], g_VertexBufferMemory[g_FrameIndex], 0);
ImGui_ImplGlfwVulkan_VkResult(err);
g_VertexBufferSize[g_FrameIndex] = vertex_buffer_size;
}
// Create the Index Buffer:
size_t index_size = draw_data->TotalIdxCount * sizeof(ImDrawIdx);
if (!g_IndexBuffer[g_FrameIndex] || g_IndexBufferSize[g_FrameIndex] < index_size)
{
if (g_IndexBuffer[g_FrameIndex])
vkDestroyBuffer(g_Device, g_IndexBuffer[g_FrameIndex], g_Allocator);
if (g_IndexBufferMemory[g_FrameIndex])
vkFreeMemory(g_Device, g_IndexBufferMemory[g_FrameIndex], g_Allocator);
size_t index_buffer_size = ((index_size-1) / g_BufferMemoryAlignment+1) * g_BufferMemoryAlignment;
VkBufferCreateInfo buffer_info = {};
buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
buffer_info.size = index_buffer_size;
buffer_info.usage = VK_BUFFER_USAGE_INDEX_BUFFER_BIT;
buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
err = vkCreateBuffer(g_Device, &buffer_info, g_Allocator, &g_IndexBuffer[g_FrameIndex]);
ImGui_ImplGlfwVulkan_VkResult(err);
VkMemoryRequirements req;
vkGetBufferMemoryRequirements(g_Device, g_IndexBuffer[g_FrameIndex], &req);
g_BufferMemoryAlignment = (g_BufferMemoryAlignment > req.alignment) ? g_BufferMemoryAlignment : req.alignment;
VkMemoryAllocateInfo alloc_info = {};
alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
alloc_info.allocationSize = req.size;
alloc_info.memoryTypeIndex = ImGui_ImplGlfwVulkan_MemoryType(VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, req.memoryTypeBits);
err = vkAllocateMemory(g_Device, &alloc_info, g_Allocator, &g_IndexBufferMemory[g_FrameIndex]);
ImGui_ImplGlfwVulkan_VkResult(err);
err = vkBindBufferMemory(g_Device, g_IndexBuffer[g_FrameIndex], g_IndexBufferMemory[g_FrameIndex], 0);
ImGui_ImplGlfwVulkan_VkResult(err);
g_IndexBufferSize[g_FrameIndex] = index_buffer_size;
}
// Upload Vertex and index Data:
{
ImDrawVert* vtx_dst;
ImDrawIdx* idx_dst;
err = vkMapMemory(g_Device, g_VertexBufferMemory[g_FrameIndex], 0, vertex_size, 0, (void**)(&vtx_dst));
ImGui_ImplGlfwVulkan_VkResult(err);
err = vkMapMemory(g_Device, g_IndexBufferMemory[g_FrameIndex], 0, index_size, 0, (void**)(&idx_dst));
ImGui_ImplGlfwVulkan_VkResult(err);
for (int n = 0; n < draw_data->CmdListsCount; n++)
{
const ImDrawList* cmd_list = draw_data->CmdLists[n];
memcpy(vtx_dst, &cmd_list->VtxBuffer[0], cmd_list->VtxBuffer.size() * sizeof(ImDrawVert));
memcpy(idx_dst, &cmd_list->IdxBuffer[0], cmd_list->IdxBuffer.size() * sizeof(ImDrawIdx));
vtx_dst += cmd_list->VtxBuffer.size();
idx_dst += cmd_list->IdxBuffer.size();
}
VkMappedMemoryRange range[2] = {};
range[0].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
range[0].memory = g_VertexBufferMemory[g_FrameIndex];
range[0].size = vertex_size;
range[1].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
range[1].memory = g_IndexBufferMemory[g_FrameIndex];
range[1].size = index_size;
err = vkFlushMappedMemoryRanges(g_Device, 2, range);
ImGui_ImplGlfwVulkan_VkResult(err);
vkUnmapMemory(g_Device, g_VertexBufferMemory[g_FrameIndex]);
vkUnmapMemory(g_Device, g_IndexBufferMemory[g_FrameIndex]);
}
// Bind pipeline and descriptor sets:
{
vkCmdBindPipeline(g_CommandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, g_Pipeline);
VkDescriptorSet desc_set[1] = {g_DescriptorSet};
vkCmdBindDescriptorSets(g_CommandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, g_PipelineLayout, 0, 1, desc_set, 0, NULL);
}
// Bind Vertex And Index Buffer:
{
VkBuffer vertex_buffers[1] = {g_VertexBuffer[g_FrameIndex]};
VkDeviceSize vertex_offset[1] = {0};
vkCmdBindVertexBuffers(g_CommandBuffer, 0, 1, vertex_buffers, vertex_offset);
vkCmdBindIndexBuffer(g_CommandBuffer, g_IndexBuffer[g_FrameIndex], 0, VK_INDEX_TYPE_UINT16);
}
// Setup viewport:
{
VkViewport viewport;
viewport.x = 0;
viewport.y = 0;
viewport.width = ImGui::GetIO().DisplaySize.x;
viewport.height = ImGui::GetIO().DisplaySize.y;
viewport.minDepth = 0.0f;
viewport.maxDepth = 1.0f;
vkCmdSetViewport(g_CommandBuffer, 0, 1, &viewport);
}
// Setup scale and translation:
{
float scale[2];
scale[0] = 2.0f/io.DisplaySize.x;
scale[1] = 2.0f/io.DisplaySize.y;
float translate[2];
translate[0] = -1.0f;
translate[1] = -1.0f;
vkCmdPushConstants(g_CommandBuffer, g_PipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, sizeof(float) * 0, sizeof(float) * 2, scale);
vkCmdPushConstants(g_CommandBuffer, g_PipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, sizeof(float) * 2, sizeof(float) * 2, translate);
}
// Render the command lists:
int vtx_offset = 0;
int idx_offset = 0;
for (int n = 0; n < draw_data->CmdListsCount; n++)
{
const ImDrawList* cmd_list = draw_data->CmdLists[n];
for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.size(); cmd_i++)
{
const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
if (pcmd->UserCallback)
{
pcmd->UserCallback(cmd_list, pcmd);
}
else
{
VkRect2D scissor;
scissor.offset.x = static_cast<int32_t>(pcmd->ClipRect.x);
scissor.offset.y = static_cast<int32_t>(pcmd->ClipRect.y);
scissor.extent.width = static_cast<uint32_t>(pcmd->ClipRect.z - pcmd->ClipRect.x);
scissor.extent.height = static_cast<uint32_t>(pcmd->ClipRect.w - pcmd->ClipRect.y + 1); // TODO: + 1??????
vkCmdSetScissor(g_CommandBuffer, 0, 1, &scissor);
vkCmdDrawIndexed(g_CommandBuffer, pcmd->ElemCount, 1, idx_offset, vtx_offset, 0);
}
idx_offset += pcmd->ElemCount;
}
vtx_offset += cmd_list->VtxBuffer.size();
}
}
static const char* ImGui_ImplGlfwVulkan_GetClipboardText()
{
return glfwGetClipboardString(g_Window);
}
static void ImGui_ImplGlfwVulkan_SetClipboardText(const char* text)
{
glfwSetClipboardString(g_Window, text);
}
void ImGui_ImplGlfwVulkan_MouseButtonCallback(GLFWwindow*, int button, int action, int /*mods*/)
{
if (action == GLFW_PRESS && button >= 0 && button < 3)
g_MousePressed[button] = true;
}
void ImGui_ImplGlfwVulkan_ScrollCallback(GLFWwindow*, double /*xoffset*/, double yoffset)
{
g_MouseWheel += (float)yoffset; // Use fractional mouse wheel, 1.0 unit 5 lines.
}
void ImGui_ImplGlfwVulkan_KeyCallback(GLFWwindow*, int key, int, int action, int mods)
{
ImGuiIO& io = ImGui::GetIO();
if (action == GLFW_PRESS)
io.KeysDown[key] = true;
if (action == GLFW_RELEASE)
io.KeysDown[key] = false;
(void)mods; // Modifiers are not reliable across systems
io.KeyCtrl = io.KeysDown[GLFW_KEY_LEFT_CONTROL] || io.KeysDown[GLFW_KEY_RIGHT_CONTROL];
io.KeyShift = io.KeysDown[GLFW_KEY_LEFT_SHIFT] || io.KeysDown[GLFW_KEY_RIGHT_SHIFT];
io.KeyAlt = io.KeysDown[GLFW_KEY_LEFT_ALT] || io.KeysDown[GLFW_KEY_RIGHT_ALT];
io.KeySuper = io.KeysDown[GLFW_KEY_LEFT_SUPER] || io.KeysDown[GLFW_KEY_RIGHT_SUPER];
}
void ImGui_ImplGlfwVulkan_CharCallback(GLFWwindow*, unsigned int c)
{
ImGuiIO& io = ImGui::GetIO();
if (c > 0 && c < 0x10000)
io.AddInputCharacter((unsigned short)c);
}
bool ImGui_ImplGlfwVulkan_CreateFontsTexture(VkCommandBuffer command_buffer)
{
ImGuiIO& io = ImGui::GetIO();
unsigned char* pixels;
int width, height;
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
size_t upload_size = width*height*4*sizeof(char);
VkResult err;
// Create the Image:
{
VkImageCreateInfo info = {};
info.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
info.imageType = VK_IMAGE_TYPE_2D;
info.format = VK_FORMAT_R8G8B8A8_UNORM;
info.extent.width = width;
info.extent.height = height;
info.extent.depth = 1;
info.mipLevels = 1;
info.arrayLayers = 1;
info.samples = VK_SAMPLE_COUNT_1_BIT;
info.tiling = VK_IMAGE_TILING_OPTIMAL;
info.usage = VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT;
info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
info.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
err = vkCreateImage(g_Device, &info, g_Allocator, &g_FontImage);
ImGui_ImplGlfwVulkan_VkResult(err);
VkMemoryRequirements req;
vkGetImageMemoryRequirements(g_Device, g_FontImage, &req);
VkMemoryAllocateInfo alloc_info = {};
alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
alloc_info.allocationSize = req.size;
alloc_info.memoryTypeIndex = ImGui_ImplGlfwVulkan_MemoryType(VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, req.memoryTypeBits);
err = vkAllocateMemory(g_Device, &alloc_info, g_Allocator, &g_FontMemory);
ImGui_ImplGlfwVulkan_VkResult(err);
err = vkBindImageMemory(g_Device, g_FontImage, g_FontMemory, 0);
ImGui_ImplGlfwVulkan_VkResult(err);
}
// Create the Image View:
{
VkResult err;
VkImageViewCreateInfo info = {};
info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
info.image = g_FontImage;
info.viewType = VK_IMAGE_VIEW_TYPE_2D;
info.format = VK_FORMAT_R8G8B8A8_UNORM;
info.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
info.subresourceRange.levelCount = 1;
info.subresourceRange.layerCount = 1;
err = vkCreateImageView(g_Device, &info, g_Allocator, &g_FontView);
ImGui_ImplGlfwVulkan_VkResult(err);
}
// Update the Descriptor Set:
{
VkDescriptorImageInfo desc_image[1] = {};
desc_image[0].sampler = g_FontSampler;
desc_image[0].imageView = g_FontView;
desc_image[0].imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
VkWriteDescriptorSet write_desc[1] = {};
write_desc[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
write_desc[0].dstSet = g_DescriptorSet;
write_desc[0].descriptorCount = 1;
write_desc[0].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
write_desc[0].pImageInfo = desc_image;
vkUpdateDescriptorSets(g_Device, 1, write_desc, 0, NULL);
}
// Create the Upload Buffer:
{
VkBufferCreateInfo buffer_info = {};
buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
buffer_info.size = upload_size;
buffer_info.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
err = vkCreateBuffer(g_Device, &buffer_info, g_Allocator, &g_UploadBuffer);
ImGui_ImplGlfwVulkan_VkResult(err);
VkMemoryRequirements req;
vkGetBufferMemoryRequirements(g_Device, g_UploadBuffer, &req);
g_BufferMemoryAlignment = (g_BufferMemoryAlignment > req.alignment) ? g_BufferMemoryAlignment : req.alignment;
VkMemoryAllocateInfo alloc_info = {};
alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
alloc_info.allocationSize = req.size;
alloc_info.memoryTypeIndex = ImGui_ImplGlfwVulkan_MemoryType(VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, req.memoryTypeBits);
err = vkAllocateMemory(g_Device, &alloc_info, g_Allocator, &g_UploadBufferMemory);
ImGui_ImplGlfwVulkan_VkResult(err);
err = vkBindBufferMemory(g_Device, g_UploadBuffer, g_UploadBufferMemory, 0);
ImGui_ImplGlfwVulkan_VkResult(err);
}
// Upload to Buffer:
{
char* map = NULL;
err = vkMapMemory(g_Device, g_UploadBufferMemory, 0, upload_size, 0, (void**)(&map));
ImGui_ImplGlfwVulkan_VkResult(err);
memcpy(map, pixels, upload_size);
VkMappedMemoryRange range[1] = {};
range[0].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
range[0].memory = g_UploadBufferMemory;
range[0].size = upload_size;
err = vkFlushMappedMemoryRanges(g_Device, 1, range);
ImGui_ImplGlfwVulkan_VkResult(err);
vkUnmapMemory(g_Device, g_UploadBufferMemory);
}
// Copy to Image:
{
VkImageMemoryBarrier copy_barrier[1] = {};
copy_barrier[0].sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
copy_barrier[0].dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
copy_barrier[0].oldLayout = VK_IMAGE_LAYOUT_UNDEFINED;
copy_barrier[0].newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
copy_barrier[0].srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
copy_barrier[0].dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
copy_barrier[0].image = g_FontImage;
copy_barrier[0].subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
copy_barrier[0].subresourceRange.levelCount = 1;
copy_barrier[0].subresourceRange.layerCount = 1;
vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_HOST_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, NULL, 0, NULL, 1, copy_barrier);
VkBufferImageCopy region = {};
region.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
region.imageSubresource.layerCount = 1;
region.imageExtent.width = width;
region.imageExtent.height = height;
vkCmdCopyBufferToImage(command_buffer, g_UploadBuffer, g_FontImage, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &region);
VkImageMemoryBarrier use_barrier[1] = {};
use_barrier[0].sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
use_barrier[0].srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
use_barrier[0].dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
use_barrier[0].oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
use_barrier[0].newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
use_barrier[0].srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
use_barrier[0].dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
use_barrier[0].image = g_FontImage;
use_barrier[0].subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
use_barrier[0].subresourceRange.levelCount = 1;
use_barrier[0].subresourceRange.layerCount = 1;
vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT, 0, 0, NULL, 0, NULL, 1, use_barrier);
}
// Store our identifier
io.Fonts->TexID = (void *)(intptr_t)g_FontImage;
return true;
}
bool ImGui_ImplGlfwVulkan_CreateDeviceObjects()
{
VkResult err;
VkShaderModule vert_module;
VkShaderModule frag_module;
// Create The Shader Modules:
{
VkShaderModuleCreateInfo vert_info = {};
vert_info.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
vert_info.codeSize = __glsl_shader_vert_spv_len;
vert_info.pCode = (uint32_t*)__glsl_shader_vert_spv;
err = vkCreateShaderModule(g_Device, &vert_info, g_Allocator, &vert_module);
ImGui_ImplGlfwVulkan_VkResult(err);
VkShaderModuleCreateInfo frag_info = {};
frag_info.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
frag_info.codeSize = __glsl_shader_frag_spv_len;
frag_info.pCode = (uint32_t*)__glsl_shader_frag_spv;
err = vkCreateShaderModule(g_Device, &frag_info, g_Allocator, &frag_module);
ImGui_ImplGlfwVulkan_VkResult(err);
}
if (!g_FontSampler)
{
VkSamplerCreateInfo info = {};
info.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
info.magFilter = VK_FILTER_LINEAR;
info.minFilter = VK_FILTER_LINEAR;
info.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
info.addressModeU = VK_SAMPLER_ADDRESS_MODE_REPEAT;
info.addressModeV = VK_SAMPLER_ADDRESS_MODE_REPEAT;
info.addressModeW = VK_SAMPLER_ADDRESS_MODE_REPEAT;
info.minLod = -1000;
info.maxLod = 1000;
err = vkCreateSampler(g_Device, &info, g_Allocator, &g_FontSampler);
ImGui_ImplGlfwVulkan_VkResult(err);
}
if (!g_DescriptorSetLayout)
{
VkSampler sampler[1] = {g_FontSampler};
VkDescriptorSetLayoutBinding binding[1] = {};
binding[0].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
binding[0].descriptorCount = 1;
binding[0].stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT;
binding[0].pImmutableSamplers = sampler;
VkDescriptorSetLayoutCreateInfo info = {};
info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
info.bindingCount = 1;
info.pBindings = binding;
err = vkCreateDescriptorSetLayout(g_Device, &info, g_Allocator, &g_DescriptorSetLayout);
ImGui_ImplGlfwVulkan_VkResult(err);
}
// Create Descriptor Set:
{
VkDescriptorSetAllocateInfo alloc_info = {};
alloc_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
alloc_info.descriptorPool = g_DescriptorPool;
alloc_info.descriptorSetCount = 1;
alloc_info.pSetLayouts = &g_DescriptorSetLayout;
err = vkAllocateDescriptorSets(g_Device, &alloc_info, &g_DescriptorSet);
ImGui_ImplGlfwVulkan_VkResult(err);
}
if (!g_PipelineLayout)
{
VkPushConstantRange push_constants[2] = {};
push_constants[0].stageFlags = VK_SHADER_STAGE_VERTEX_BIT;
push_constants[0].offset = sizeof(float) * 0;
push_constants[0].size = sizeof(float) * 2;
push_constants[1].stageFlags = VK_SHADER_STAGE_VERTEX_BIT;
push_constants[1].offset = sizeof(float) * 2;
push_constants[1].size = sizeof(float) * 2;
VkDescriptorSetLayout set_layout[1] = {g_DescriptorSetLayout};
VkPipelineLayoutCreateInfo layout_info = {};
layout_info.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
layout_info.setLayoutCount = 1;
layout_info.pSetLayouts = set_layout;
layout_info.pushConstantRangeCount = 2;
layout_info.pPushConstantRanges = push_constants;
err = vkCreatePipelineLayout(g_Device, &layout_info, g_Allocator, &g_PipelineLayout);
ImGui_ImplGlfwVulkan_VkResult(err);
}
VkPipelineShaderStageCreateInfo stage[2] = {};
stage[0].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
stage[0].stage = VK_SHADER_STAGE_VERTEX_BIT;
stage[0].module = vert_module;
stage[0].pName = "main";
stage[1].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
stage[1].stage = VK_SHADER_STAGE_FRAGMENT_BIT;
stage[1].module = frag_module;
stage[1].pName = "main";
VkVertexInputBindingDescription binding_desc[1] = {};
binding_desc[0].stride = sizeof(ImDrawVert);
binding_desc[0].inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
VkVertexInputAttributeDescription attribute_desc[3] = {};
attribute_desc[0].location = 0;
attribute_desc[0].binding = binding_desc[0].binding;
attribute_desc[0].format = VK_FORMAT_R32G32_SFLOAT;
attribute_desc[0].offset = (size_t)(&((ImDrawVert*)0)->pos);
attribute_desc[1].location = 1;
attribute_desc[1].binding = binding_desc[0].binding;
attribute_desc[1].format = VK_FORMAT_R32G32_SFLOAT;
attribute_desc[1].offset = (size_t)(&((ImDrawVert*)0)->uv);
attribute_desc[2].location = 2;
attribute_desc[2].binding = binding_desc[0].binding;
attribute_desc[2].format = VK_FORMAT_R8G8B8A8_UNORM;
attribute_desc[2].offset = (size_t)(&((ImDrawVert*)0)->col);
VkPipelineVertexInputStateCreateInfo vertex_info = {};
vertex_info.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
vertex_info.vertexBindingDescriptionCount = 1;
vertex_info.pVertexBindingDescriptions = binding_desc;
vertex_info.vertexAttributeDescriptionCount = 3;
vertex_info.pVertexAttributeDescriptions = attribute_desc;
VkPipelineInputAssemblyStateCreateInfo ia_info = {};
ia_info.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
ia_info.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
VkPipelineViewportStateCreateInfo viewport_info = {};
viewport_info.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
viewport_info.viewportCount = 1;
viewport_info.scissorCount = 1;
VkPipelineRasterizationStateCreateInfo raster_info = {};
raster_info.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
raster_info.polygonMode = VK_POLYGON_MODE_FILL;
raster_info.cullMode = VK_CULL_MODE_NONE;
raster_info.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
VkPipelineMultisampleStateCreateInfo ms_info = {};
ms_info.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
ms_info.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
VkPipelineColorBlendAttachmentState color_attachment[1] = {};
color_attachment[0].blendEnable = VK_TRUE;
color_attachment[0].srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
color_attachment[0].dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
color_attachment[0].colorBlendOp = VK_BLEND_OP_ADD;
color_attachment[0].srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
color_attachment[0].dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO;
color_attachment[0].alphaBlendOp = VK_BLEND_OP_ADD;
color_attachment[0].colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
VkPipelineColorBlendStateCreateInfo blend_info = {};
blend_info.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
blend_info.attachmentCount = 1;
blend_info.pAttachments = color_attachment;
VkDynamicState dynamic_states[2] = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
VkPipelineDynamicStateCreateInfo dynamic_state = {};
dynamic_state.dynamicStateCount = 2;
dynamic_state.pDynamicStates = dynamic_states;
VkGraphicsPipelineCreateInfo info = {};
info.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
info.flags = g_PipelineCreateFlags;
info.stageCount = 2;
info.pStages = stage;
info.pVertexInputState = &vertex_info;
info.pInputAssemblyState = &ia_info;
info.pViewportState = &viewport_info;
info.pRasterizationState = &raster_info;
info.pMultisampleState = &ms_info;
info.pColorBlendState = &blend_info;
info.pDynamicState = &dynamic_state;
info.layout = g_PipelineLayout;
info.renderPass = g_RenderPass;
err = vkCreateGraphicsPipelines(g_Device, g_PipelineCache, 1, &info, g_Allocator, &g_Pipeline);
ImGui_ImplGlfwVulkan_VkResult(err);
vkDestroyShaderModule(g_Device, vert_module, g_Allocator);
vkDestroyShaderModule(g_Device, frag_module, g_Allocator);
return true;
}
void ImGui_ImplGlfwVulkan_InvalidateFontUploadObjects()
{
if (g_UploadBuffer)
{
vkDestroyBuffer(g_Device, g_UploadBuffer, g_Allocator);
g_UploadBuffer = VK_NULL_HANDLE;
}
if (g_UploadBufferMemory)
{
vkFreeMemory(g_Device, g_UploadBufferMemory, g_Allocator);
g_UploadBufferMemory = VK_NULL_HANDLE;
}
}
void ImGui_ImplGlfwVulkan_InvalidateDeviceObjects()
{
ImGui_ImplGlfwVulkan_InvalidateFontUploadObjects();
for (int i=0; i<IMGUI_VK_QUEUED_FRAMES; i++)
{
if (g_VertexBuffer[i])
vkDestroyBuffer(g_Device, g_VertexBuffer[i], g_Allocator);
if (g_VertexBufferMemory[i])
vkFreeMemory(g_Device, g_VertexBufferMemory[i], g_Allocator);
if (g_IndexBuffer[i])
vkDestroyBuffer(g_Device, g_IndexBuffer[i], g_Allocator);
if (g_IndexBufferMemory[i])
vkFreeMemory(g_Device, g_IndexBufferMemory[i], g_Allocator);
}
if (g_FontView)
vkDestroyImageView(g_Device, g_FontView, g_Allocator);
if (g_FontImage)
vkDestroyImage(g_Device, g_FontImage, g_Allocator);
if (g_FontMemory)
vkFreeMemory(g_Device, g_FontMemory, g_Allocator);
if (g_FontSampler)
vkDestroySampler(g_Device, g_FontSampler, g_Allocator);
if (g_DescriptorSetLayout)
vkDestroyDescriptorSetLayout(g_Device, g_DescriptorSetLayout, g_Allocator);
if (g_PipelineLayout)
vkDestroyPipelineLayout(g_Device, g_PipelineLayout, g_Allocator);
if (g_Pipeline)
vkDestroyPipeline(g_Device, g_Pipeline, g_Allocator);
}
bool ImGui_ImplGlfwVulkan_Init(GLFWwindow* window, bool install_callbacks, ImGui_ImplGlfwVulkan_Init_Data *init_data)
{
g_Allocator = init_data->allocator;
g_Gpu = init_data->gpu;
g_Device = init_data->device;
g_RenderPass = init_data->render_pass;
g_PipelineCache = init_data->pipeline_cache;
g_DescriptorPool = init_data->descriptor_pool;
g_CheckVkResult = init_data->check_vk_result;
g_Window = window;
ImGuiIO& io = ImGui::GetIO();
io.KeyMap[ImGuiKey_Tab] = GLFW_KEY_TAB; // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
io.KeyMap[ImGuiKey_LeftArrow] = GLFW_KEY_LEFT;
io.KeyMap[ImGuiKey_RightArrow] = GLFW_KEY_RIGHT;
io.KeyMap[ImGuiKey_UpArrow] = GLFW_KEY_UP;
io.KeyMap[ImGuiKey_DownArrow] = GLFW_KEY_DOWN;
io.KeyMap[ImGuiKey_PageUp] = GLFW_KEY_PAGE_UP;
io.KeyMap[ImGuiKey_PageDown] = GLFW_KEY_PAGE_DOWN;
io.KeyMap[ImGuiKey_Home] = GLFW_KEY_HOME;
io.KeyMap[ImGuiKey_End] = GLFW_KEY_END;
io.KeyMap[ImGuiKey_Delete] = GLFW_KEY_DELETE;
io.KeyMap[ImGuiKey_Backspace] = GLFW_KEY_BACKSPACE;
io.KeyMap[ImGuiKey_Enter] = GLFW_KEY_ENTER;
io.KeyMap[ImGuiKey_Escape] = GLFW_KEY_ESCAPE;
io.KeyMap[ImGuiKey_A] = GLFW_KEY_A;
io.KeyMap[ImGuiKey_C] = GLFW_KEY_C;
io.KeyMap[ImGuiKey_V] = GLFW_KEY_V;
io.KeyMap[ImGuiKey_X] = GLFW_KEY_X;
io.KeyMap[ImGuiKey_Y] = GLFW_KEY_Y;
io.KeyMap[ImGuiKey_Z] = GLFW_KEY_Z;
io.RenderDrawListsFn = ImGui_ImplGlfwVulkan_RenderDrawLists; // Alternatively you can set this to NULL and call ImGui::GetDrawData() after ImGui::Render() to get the same ImDrawData pointer.
io.SetClipboardTextFn = ImGui_ImplGlfwVulkan_SetClipboardText;
io.GetClipboardTextFn = ImGui_ImplGlfwVulkan_GetClipboardText;
#ifdef _WIN32
io.ImeWindowHandle = glfwGetWin32Window(g_Window);
#endif
if (install_callbacks)
{
glfwSetMouseButtonCallback(window, ImGui_ImplGlfwVulkan_MouseButtonCallback);
glfwSetScrollCallback(window, ImGui_ImplGlfwVulkan_ScrollCallback);
glfwSetKeyCallback(window, ImGui_ImplGlfwVulkan_KeyCallback);
glfwSetCharCallback(window, ImGui_ImplGlfwVulkan_CharCallback);
}
ImGui_ImplGlfwVulkan_CreateDeviceObjects();
return true;
}
void ImGui_ImplGlfwVulkan_Shutdown()
{
ImGui_ImplGlfwVulkan_InvalidateDeviceObjects();
ImGui::Shutdown();
}
void ImGui_ImplGlfwVulkan_NewFrame()
{
ImGuiIO& io = ImGui::GetIO();
// Setup display size (every frame to accommodate for window resizing)
int w, h;
int display_w, display_h;
glfwGetWindowSize(g_Window, &w, &h);
glfwGetFramebufferSize(g_Window, &display_w, &display_h);
io.DisplaySize = ImVec2((float)w, (float)h);
io.DisplayFramebufferScale = ImVec2(w > 0 ? ((float)display_w / w) : 0, h > 0 ? ((float)display_h / h) : 0);
// Setup time step
double current_time = glfwGetTime();
io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f);
g_Time = current_time;
// Setup inputs
// (we already got mouse wheel, keyboard keys & characters from glfw callbacks polled in glfwPollEvents())
if (glfwGetWindowAttrib(g_Window, GLFW_FOCUSED))
{
double mouse_x, mouse_y;
glfwGetCursorPos(g_Window, &mouse_x, &mouse_y);
io.MousePos = ImVec2((float)mouse_x, (float)mouse_y); // Mouse position in screen coordinates (set to -1,-1 if no mouse / on another screen, etc.)
}
else
{
io.MousePos = ImVec2(-1,-1);
}
for (int i = 0; i < 3; i++)
{
io.MouseDown[i] = g_MousePressed[i] || glfwGetMouseButton(g_Window, i) != 0; // If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame.
g_MousePressed[i] = false;
}
io.MouseWheel = g_MouseWheel;
g_MouseWheel = 0.0f;
// Hide OS mouse cursor if ImGui is drawing it
glfwSetInputMode(g_Window, GLFW_CURSOR, io.MouseDrawCursor ? GLFW_CURSOR_HIDDEN : GLFW_CURSOR_NORMAL);
// Start the frame
ImGui::NewFrame();
}
void ImGui_ImplGlfwVulkan_Render(VkCommandBuffer command_buffer)
{
g_CommandBuffer = command_buffer;
ImGui::Render();
g_CommandBuffer = VK_NULL_HANDLE;
g_FrameIndex = (g_FrameIndex + 1) % IMGUI_VK_QUEUED_FRAMES;
}
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