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// 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 ;
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static unsigned char __glsl_shader_vert_spv [ ] =
{
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} ;
static unsigned int __glsl_shader_vert_spv_len = 1172 ;
2016-04-03 23:32:53 +08:00
static unsigned char __glsl_shader_frag_spv [ ] =
{
2016-03-09 23:39:54 +08:00
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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 ) ;
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for ( uint32_t i = 0 ; i < prop . memoryTypeCount ; i + + )
if ( ( prop . memoryTypes [ i ] . propertyFlags & properties ) = = properties & & type_bits & ( 1 < < i ) )
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return i ;
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return 0xffffffff ; // Unable to find memoryType
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}
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static void ImGui_ImplGlfwVulkan_VkResult ( VkResult err )
{
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if ( g_CheckVkResult )
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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 ) ;
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if ( ! g_VertexBuffer [ g_FrameIndex ] | | g_VertexBufferSize [ g_FrameIndex ] < vertex_size )
{
if ( g_VertexBuffer [ g_FrameIndex ] )
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vkDestroyBuffer ( g_Device , g_VertexBuffer [ g_FrameIndex ] , g_Allocator ) ;
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if ( g_VertexBufferMemory [ g_FrameIndex ] )
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vkFreeMemory ( g_Device , g_VertexBufferMemory [ g_FrameIndex ] , g_Allocator ) ;
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size_t vertex_buffer_size = ( ( vertex_size - 1 ) / g_BufferMemoryAlignment + 1 ) * g_BufferMemoryAlignment ;
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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 ;
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err = vkCreateBuffer ( g_Device , & buffer_info , g_Allocator , & g_VertexBuffer [ g_FrameIndex ] ) ;
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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 ;
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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 ] ) ;
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ImGui_ImplGlfwVulkan_VkResult ( err ) ;
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err = vkBindBufferMemory ( g_Device , g_VertexBuffer [ g_FrameIndex ] , g_VertexBufferMemory [ g_FrameIndex ] , 0 ) ;
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ImGui_ImplGlfwVulkan_VkResult ( err ) ;
g_VertexBufferSize [ g_FrameIndex ] = vertex_buffer_size ;
}
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// Create the Index Buffer:
size_t index_size = draw_data - > TotalIdxCount * sizeof ( ImDrawIdx ) ;
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if ( ! g_IndexBuffer [ g_FrameIndex ] | | g_IndexBufferSize [ g_FrameIndex ] < index_size )
{
if ( g_IndexBuffer [ g_FrameIndex ] )
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vkDestroyBuffer ( g_Device , g_IndexBuffer [ g_FrameIndex ] , g_Allocator ) ;
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if ( g_IndexBufferMemory [ g_FrameIndex ] )
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vkFreeMemory ( g_Device , g_IndexBufferMemory [ g_FrameIndex ] , g_Allocator ) ;
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size_t index_buffer_size = ( ( index_size - 1 ) / g_BufferMemoryAlignment + 1 ) * g_BufferMemoryAlignment ;
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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 ;
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err = vkCreateBuffer ( g_Device , & buffer_info , g_Allocator , & g_IndexBuffer [ g_FrameIndex ] ) ;
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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 ;
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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 ] ) ;
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ImGui_ImplGlfwVulkan_VkResult ( err ) ;
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err = vkBindBufferMemory ( g_Device , g_IndexBuffer [ g_FrameIndex ] , g_IndexBufferMemory [ g_FrameIndex ] , 0 ) ;
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ImGui_ImplGlfwVulkan_VkResult ( err ) ;
g_IndexBufferSize [ g_FrameIndex ] = index_buffer_size ;
}
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// Upload Vertex and index Data:
{
ImDrawVert * vtx_dst ;
ImDrawIdx * idx_dst ;
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err = vkMapMemory ( g_Device , g_VertexBufferMemory [ g_FrameIndex ] , 0 , vertex_size , 0 , ( void * * ) ( & vtx_dst ) ) ;
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ImGui_ImplGlfwVulkan_VkResult ( err ) ;
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err = vkMapMemory ( g_Device , g_IndexBufferMemory [ g_FrameIndex ] , 0 , index_size , 0 , ( void * * ) ( & idx_dst ) ) ;
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ImGui_ImplGlfwVulkan_VkResult ( err ) ;
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for ( int n = 0 ; n < draw_data - > CmdListsCount ; n + + )
{
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const ImDrawList * cmd_list = draw_data - > CmdLists [ n ] ;
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memcpy ( vtx_dst , cmd_list - > VtxBuffer . Data , cmd_list - > VtxBuffer . Size * sizeof ( ImDrawVert ) ) ;
memcpy ( idx_dst , cmd_list - > IdxBuffer . Data , cmd_list - > IdxBuffer . Size * sizeof ( ImDrawIdx ) ) ;
vtx_dst + = cmd_list - > VtxBuffer . Size ;
idx_dst + = cmd_list - > IdxBuffer . Size ;
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}
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 ] ) ;
}
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// Bind pipeline and descriptor sets:
{
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vkCmdBindPipeline ( g_CommandBuffer , VK_PIPELINE_BIND_POINT_GRAPHICS , g_Pipeline ) ;
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VkDescriptorSet desc_set [ 1 ] = { g_DescriptorSet } ;
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vkCmdBindDescriptorSets ( g_CommandBuffer , VK_PIPELINE_BIND_POINT_GRAPHICS , g_PipelineLayout , 0 , 1 , desc_set , 0 , NULL ) ;
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}
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// Bind Vertex And Index Buffer:
{
VkBuffer vertex_buffers [ 1 ] = { g_VertexBuffer [ g_FrameIndex ] } ;
VkDeviceSize vertex_offset [ 1 ] = { 0 } ;
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vkCmdBindVertexBuffers ( g_CommandBuffer , 0 , 1 , vertex_buffers , vertex_offset ) ;
vkCmdBindIndexBuffer ( g_CommandBuffer , g_IndexBuffer [ g_FrameIndex ] , 0 , VK_INDEX_TYPE_UINT16 ) ;
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}
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// 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 ) ;
}
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// 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 ;
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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 ) ;
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}
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// Render the command lists:
int vtx_offset = 0 ;
int idx_offset = 0 ;
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for ( int n = 0 ; n < draw_data - > CmdListsCount ; n + + )
{
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const ImDrawList * cmd_list = draw_data - > CmdLists [ n ] ;
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for ( int cmd_i = 0 ; cmd_i < cmd_list - > CmdBuffer . Size ; cmd_i + + )
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{
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const ImDrawCmd * pcmd = & cmd_list - > CmdBuffer [ cmd_i ] ;
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if ( pcmd - > UserCallback )
{
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pcmd - > UserCallback ( cmd_list , pcmd ) ;
}
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else
{
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VkRect2D scissor ;
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scissor . offset . x = ( int32_t ) ( pcmd - > ClipRect . x ) ;
scissor . offset . y = ( int32_t ) ( pcmd - > ClipRect . y ) ;
scissor . extent . width = ( uint32_t ) ( pcmd - > ClipRect . z - pcmd - > ClipRect . x ) ;
scissor . extent . height = ( uint32_t ) ( pcmd - > ClipRect . w - pcmd - > ClipRect . y + 1 ) ; // TODO: + 1??????
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vkCmdSetScissor ( g_CommandBuffer , 0 , 1 , & scissor ) ;
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vkCmdDrawIndexed ( g_CommandBuffer , pcmd - > ElemCount , 1 , idx_offset , vtx_offset , 0 ) ;
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}
idx_offset + = pcmd - > ElemCount ;
}
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vtx_offset + = cmd_list - > VtxBuffer . Size ;
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}
}
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static const char * ImGui_ImplGlfwVulkan_GetClipboardText ( void * user_data )
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{
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return glfwGetClipboardString ( ( GLFWwindow * ) user_data ) ;
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}
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static void ImGui_ImplGlfwVulkan_SetClipboardText ( void * user_data , const char * text )
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{
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glfwSetClipboardString ( ( GLFWwindow * ) user_data , text ) ;
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}
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 ] ;
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io . KeySuper = io . KeysDown [ GLFW_KEY_LEFT_SUPER ] | | io . KeysDown [ GLFW_KEY_RIGHT_SUPER ] ;
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}
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 ;
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// 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 ;
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info . usage = VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT ;
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info . sharingMode = VK_SHARING_MODE_EXCLUSIVE ;
info . initialLayout = VK_IMAGE_LAYOUT_UNDEFINED ;
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err = vkCreateImage ( g_Device , & info , g_Allocator , & g_FontImage ) ;
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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 ;
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alloc_info . memoryTypeIndex = ImGui_ImplGlfwVulkan_MemoryType ( VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT , req . memoryTypeBits ) ;
err = vkAllocateMemory ( g_Device , & alloc_info , g_Allocator , & g_FontMemory ) ;
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ImGui_ImplGlfwVulkan_VkResult ( err ) ;
err = vkBindImageMemory ( g_Device , g_FontImage , g_FontMemory , 0 ) ;
ImGui_ImplGlfwVulkan_VkResult ( err ) ;
}
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// 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 ;
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err = vkCreateImageView ( g_Device , & info , g_Allocator , & g_FontView ) ;
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ImGui_ImplGlfwVulkan_VkResult ( err ) ;
}
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// 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 ;
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vkUpdateDescriptorSets ( g_Device , 1 , write_desc , 0 , NULL ) ;
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}
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// 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 ;
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err = vkCreateBuffer ( g_Device , & buffer_info , g_Allocator , & g_UploadBuffer ) ;
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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 ;
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alloc_info . memoryTypeIndex = ImGui_ImplGlfwVulkan_MemoryType ( VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT , req . memoryTypeBits ) ;
err = vkAllocateMemory ( g_Device , & alloc_info , g_Allocator , & g_UploadBufferMemory ) ;
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ImGui_ImplGlfwVulkan_VkResult ( err ) ;
err = vkBindBufferMemory ( g_Device , g_UploadBuffer , g_UploadBufferMemory , 0 ) ;
ImGui_ImplGlfwVulkan_VkResult ( err ) ;
}
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// Upload to Buffer:
{
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char * map = NULL ;
err = vkMapMemory ( g_Device , g_UploadBufferMemory , 0 , upload_size , 0 , ( void * * ) ( & map ) ) ;
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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 ) ;
}
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// Copy to Image:
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{
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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 ;
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vkCmdPipelineBarrier ( command_buffer , VK_PIPELINE_STAGE_HOST_BIT , VK_PIPELINE_STAGE_TRANSFER_BIT , 0 , 0 , NULL , 0 , NULL , 1 , copy_barrier ) ;
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VkBufferImageCopy region = { } ;
region . imageSubresource . aspectMask = VK_IMAGE_ASPECT_COLOR_BIT ;
region . imageSubresource . layerCount = 1 ;
region . imageExtent . width = width ;
region . imageExtent . height = height ;
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vkCmdCopyBufferToImage ( command_buffer , g_UploadBuffer , g_FontImage , VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL , 1 , & region ) ;
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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 ;
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vkCmdPipelineBarrier ( command_buffer , VK_PIPELINE_STAGE_TRANSFER_BIT , VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT , 0 , 0 , NULL , 0 , NULL , 1 , use_barrier ) ;
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}
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// Store our identifier
io . Fonts - > TexID = ( void * ) ( intptr_t ) g_FontImage ;
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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 ) ;
}
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if ( ! g_FontSampler )
{
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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 ;
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err = vkCreateSampler ( g_Device , & info , g_Allocator , & g_FontSampler ) ;
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ImGui_ImplGlfwVulkan_VkResult ( err ) ;
}
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if ( ! g_DescriptorSetLayout )
{
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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 ;
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err = vkCreateDescriptorSetLayout ( g_Device , & info , g_Allocator , & g_DescriptorSetLayout ) ;
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ImGui_ImplGlfwVulkan_VkResult ( err ) ;
}
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// Create Descriptor Set:
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{
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 ) ;
}
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if ( ! g_PipelineLayout )
{
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VkPushConstantRange push_constants [ 1 ] = { } ;
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push_constants [ 0 ] . stageFlags = VK_SHADER_STAGE_VERTEX_BIT ;
push_constants [ 0 ] . offset = sizeof ( float ) * 0 ;
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push_constants [ 0 ] . size = sizeof ( float ) * 4 ;
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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 ;
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layout_info . pushConstantRangeCount = 1 ;
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layout_info . pPushConstantRanges = push_constants ;
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err = vkCreatePipelineLayout ( g_Device , & layout_info , g_Allocator , & g_PipelineLayout ) ;
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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 ;
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raster_info . lineWidth = 1.0f ;
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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 ;
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color_attachment [ 0 ] . colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT ;
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VkPipelineDepthStencilStateCreateInfo depth_info = { } ;
depth_info . sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO ;
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VkPipelineColorBlendStateCreateInfo blend_info = { } ;
blend_info . sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO ;
blend_info . attachmentCount = 1 ;
blend_info . pAttachments = color_attachment ;
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VkDynamicState dynamic_states [ 2 ] = { VK_DYNAMIC_STATE_VIEWPORT , VK_DYNAMIC_STATE_SCISSOR } ;
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VkPipelineDynamicStateCreateInfo dynamic_state = { } ;
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dynamic_state . sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO ;
dynamic_state . dynamicStateCount = 2 ;
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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 ;
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info . pDepthStencilState = & depth_info ;
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info . pColorBlendState = & blend_info ;
info . pDynamicState = & dynamic_state ;
info . layout = g_PipelineLayout ;
info . renderPass = g_RenderPass ;
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err = vkCreateGraphicsPipelines ( g_Device , g_PipelineCache , 1 , & info , g_Allocator , & g_Pipeline ) ;
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ImGui_ImplGlfwVulkan_VkResult ( err ) ;
vkDestroyShaderModule ( g_Device , vert_module , g_Allocator ) ;
vkDestroyShaderModule ( g_Device , frag_module , g_Allocator ) ;
return true ;
}
void ImGui_ImplGlfwVulkan_InvalidateFontUploadObjects ( )
{
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if ( g_UploadBuffer )
{
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vkDestroyBuffer ( g_Device , g_UploadBuffer , g_Allocator ) ;
g_UploadBuffer = VK_NULL_HANDLE ;
}
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if ( g_UploadBufferMemory )
{
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vkFreeMemory ( g_Device , g_UploadBufferMemory , g_Allocator ) ;
g_UploadBufferMemory = VK_NULL_HANDLE ;
}
}
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void ImGui_ImplGlfwVulkan_InvalidateDeviceObjects ( )
{
ImGui_ImplGlfwVulkan_InvalidateFontUploadObjects ( ) ;
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for ( int i = 0 ; i < IMGUI_VK_QUEUED_FRAMES ; i + + )
{
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if ( g_VertexBuffer [ i ] ) {
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vkDestroyBuffer ( g_Device , g_VertexBuffer [ i ] , g_Allocator ) ;
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g_VertexBuffer [ i ] = VK_NULL_HANDLE ;
}
if ( g_VertexBufferMemory [ i ] ) {
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vkFreeMemory ( g_Device , g_VertexBufferMemory [ i ] , g_Allocator ) ;
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g_VertexBufferMemory [ i ] = VK_NULL_HANDLE ;
}
if ( g_IndexBuffer [ i ] ) {
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vkDestroyBuffer ( g_Device , g_IndexBuffer [ i ] , g_Allocator ) ;
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g_IndexBuffer [ i ] = VK_NULL_HANDLE ;
}
if ( g_IndexBufferMemory [ i ] ) {
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vkFreeMemory ( g_Device , g_IndexBufferMemory [ i ] , g_Allocator ) ;
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g_IndexBufferMemory [ i ] = VK_NULL_HANDLE ;
}
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}
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if ( g_FontView )
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vkDestroyImageView ( g_Device , g_FontView , g_Allocator ) ;
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g_FontView = VK_NULL_HANDLE ;
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if ( g_FontImage )
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vkDestroyImage ( g_Device , g_FontImage , g_Allocator ) ;
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g_FontImage = VK_NULL_HANDLE ;
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if ( g_FontMemory )
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vkFreeMemory ( g_Device , g_FontMemory , g_Allocator ) ;
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g_FontMemory = VK_NULL_HANDLE ;
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if ( g_FontSampler )
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vkDestroySampler ( g_Device , g_FontSampler , g_Allocator ) ;
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g_FontSampler = VK_NULL_HANDLE ;
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if ( g_DescriptorSetLayout )
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vkDestroyDescriptorSetLayout ( g_Device , g_DescriptorSetLayout , g_Allocator ) ;
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g_DescriptorSetLayout = VK_NULL_HANDLE ;
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if ( g_PipelineLayout )
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vkDestroyPipelineLayout ( g_Device , g_PipelineLayout , g_Allocator ) ;
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g_PipelineLayout = VK_NULL_HANDLE ;
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if ( g_Pipeline )
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vkDestroyPipeline ( g_Device , g_Pipeline , g_Allocator ) ;
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g_Pipeline = VK_NULL_HANDLE ;
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}
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 ;
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io . ClipboardUserData = g_Window ;
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# 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 ;
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g_FrameIndex = ( g_FrameIndex + 1 ) % IMGUI_VK_QUEUED_FRAMES ;
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}