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Examples: DirectX12: Add directx12_example

This commit is contained in:
Jefferson Montgomery 2016-02-22 15:22:48 -08:00
parent ab97b42935
commit f6181b3428
8 changed files with 1346 additions and 0 deletions
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4
examples/README.txt
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@ -58,6 +58,10 @@ directx11_example/
DirectX11 example, Windows only.
This is quite long and tedious, because: DirectX11.
directx12_example/
DirectX12 example, Windows only.
This is quite long and tedious, because: DirectX12.
ios_example/
iOS example.
Using Synergy to access keyboard/mouse data from server computer.

4
examples/directx12_example/build_win32.bat Normal file
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@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
mkdir Debug
cl /nologo /Zi /MD /I ..\.. /I "%WindowsSdkDir%Include\um" /I "%WindowsSdkDir%Include\shared" /I "%DXSDK_DIR%Include" /D UNICODE /D _UNICODE *.cpp ..\..\*.cpp /FeDebug/directx12_example.exe /FoDebug/ /link /LIBPATH:"%DXSDK_DIR%/Lib/x86" d3d12.lib d3dcompiler.lib

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examples/directx12_example/directx12_example.vcxproj Normal file
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<?xml version="1.0" encoding="utf-8"?>
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<Configuration>Release</Configuration>
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<ProjectGuid>{b4cf9797-519d-4afe-a8f4-5141a6b521d3}</ProjectGuid>
<RootNamespace>directx12_example</RootNamespace>
<WindowsTargetPlatformVersion>10.0.10240.0</WindowsTargetPlatformVersion>
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<ItemGroup>
<ClInclude Include="..\..\imconfig.h" />
<ClInclude Include="..\..\imgui.h" />
<ClInclude Include="..\..\imgui_internal.h" />
<ClInclude Include="imgui_impl_dx12.h" />
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<ClCompile Include="..\..\imgui.cpp" />
<ClCompile Include="..\..\imgui_demo.cpp" />
<ClCompile Include="..\..\imgui_draw.cpp" />
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<ClCompile Include="main.cpp" />
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45
examples/directx12_example/directx12_example.vcxproj.filters Normal file
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@ -0,0 +1,45 @@
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<Filter Include="imgui">
<UniqueIdentifier>{fb3d294f-51ec-478e-a627-25831c80fefd}</UniqueIdentifier>
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<None Include="..\README.txt" />
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667
examples/directx12_example/imgui_impl_dx12.cpp Normal file
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// ImGui Win32 + DirectX12 binding
// 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 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::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>
#include "imgui_impl_dx12.h"
// DirectX
#include <d3d12.h>
#include <d3dcompiler.h>
struct FrameResources
{
ID3D12Resource* IB;
ID3D12Resource* VB;
int VertexBufferSize;
int IndexBufferSize;
};
// Data
static INT64 g_Time = 0;
static INT64 g_TicksPerSecond = 0;
static HWND g_hWnd = 0;
static ID3D12Device* g_pd3dDevice = NULL;
static ID3D12GraphicsCommandList* g_pd3dCommandList = NULL;
static ID3D10Blob* g_pVertexShaderBlob = NULL;
static ID3D10Blob* g_pPixelShaderBlob = NULL;
static ID3D12RootSignature* g_pRootSignature = NULL;
static ID3D12PipelineState* g_pPipelineState = NULL;
static ID3D12Resource* g_pFontTextureResource = NULL;
static D3D12_CPU_DESCRIPTOR_HANDLE g_hFontSrvCpuDescHandle = {};
static D3D12_GPU_DESCRIPTOR_HANDLE g_hFontSrvGpuDescHandle = {};
static FrameResources* g_pFrameResources = NULL;
static UINT g_numFramesInFlight = 0;
static UINT g_frameIndex = UINT_MAX;
struct VERTEX_CONSTANT_BUFFER
{
float mvp[4][4];
};
// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
// If text or lines are blurry when integrating ImGui in your engine:
// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
void ImGui_ImplDX12_RenderDrawLists(ImDrawData* draw_data)
{
// Create and grow vertex/index buffers if needed
//
// NOTE: I'm assuming that this only get's called once per frame! If not,
// we can't just re-allocate the IB or VB, we'll have to do a proper
// allocator.
g_frameIndex = g_frameIndex + 1;
FrameResources* frameResources = &g_pFrameResources[g_frameIndex % g_numFramesInFlight];
D3D12_HEAP_PROPERTIES props = {};
props.Type = D3D12_HEAP_TYPE_UPLOAD;
props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
D3D12_RESOURCE_DESC desc = {};
desc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
desc.Height = 1;
desc.DepthOrArraySize = 1;
desc.MipLevels = 1;
desc.Format = DXGI_FORMAT_UNKNOWN;
desc.SampleDesc.Count = 1;
desc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
desc.Flags = D3D12_RESOURCE_FLAG_NONE;
if (!frameResources->VB || frameResources->VertexBufferSize < draw_data->TotalVtxCount)
{
if (frameResources->VB) { frameResources->VB->Release(); frameResources->VB = NULL; }
frameResources->VertexBufferSize = draw_data->TotalVtxCount + 5000;
desc.Width = frameResources->VertexBufferSize * sizeof(ImDrawVert);
HRESULT hr = g_pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE, &desc, D3D12_RESOURCE_STATE_GENERIC_READ, NULL, IID_PPV_ARGS(&frameResources->VB));
assert(SUCCEEDED(hr));
}
if (!frameResources->IB || frameResources->IndexBufferSize < draw_data->TotalIdxCount)
{
if (frameResources->IB) { frameResources->IB->Release(); frameResources->IB = NULL; }
frameResources->IndexBufferSize = draw_data->TotalIdxCount + 10000;
desc.Width = frameResources->IndexBufferSize * sizeof(ImDrawIdx);
HRESULT hr = g_pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE, &desc, D3D12_RESOURCE_STATE_GENERIC_READ, NULL, IID_PPV_ARGS(&frameResources->IB));
assert(SUCCEEDED(hr));
}
// Copy and convert all vertices into a single contiguous buffer
D3D12_RANGE range = {};
void* vtx_resource = NULL;
HRESULT hr = frameResources->VB->Map(0, &range, &vtx_resource);
assert(SUCCEEDED(hr));
void* idx_resource = NULL;
hr = frameResources->IB->Map(0, &range, &idx_resource);
assert(SUCCEEDED(hr));
ImDrawVert* vtx_dst = (ImDrawVert*)vtx_resource;
ImDrawIdx* idx_dst = (ImDrawIdx*)idx_resource;
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();
}
frameResources->VB->Unmap(0, &range);
frameResources->IB->Unmap(0, &range);
// Setup orthographic projection matrix into our constant buffer
VERTEX_CONSTANT_BUFFER vertexConstantBuffer = {};
{
const float L = 0.0f;
const float R = ImGui::GetIO().DisplaySize.x;
const float B = ImGui::GetIO().DisplaySize.y;
const float T = 0.0f;
const float mvp[4][4] =
{
{ 2.0f/(R-L), 0.0f, 0.0f, 0.0f },
{ 0.0f, 2.0f/(T-B), 0.0f, 0.0f },
{ 0.0f, 0.0f, 0.5f, 0.0f },
{ (R+L)/(L-R), (T+B)/(B-T), 0.5f, 1.0f },
};
memcpy(&vertexConstantBuffer.mvp, mvp, sizeof(mvp));
}
// Setup viewport
D3D12_VIEWPORT viewport = {};
viewport.Width = ImGui::GetIO().DisplaySize.x;
viewport.Height = ImGui::GetIO().DisplaySize.y;
viewport.MinDepth = 0.0f;
viewport.MaxDepth = 1.0f;
viewport.TopLeftX = 0;
viewport.TopLeftY = 0;
// Bind shader and vertex buffers
D3D12_VERTEX_BUFFER_VIEW vbv = {};
vbv.BufferLocation = frameResources->VB->GetGPUVirtualAddress();
vbv.SizeInBytes = frameResources->VertexBufferSize * sizeof(ImDrawVert);
vbv.StrideInBytes = sizeof(ImDrawVert);
D3D12_INDEX_BUFFER_VIEW ibv = {};
ibv.BufferLocation = frameResources->IB->GetGPUVirtualAddress();
ibv.SizeInBytes = frameResources->IndexBufferSize * sizeof(ImDrawIdx);
ibv.Format = sizeof(ImDrawIdx) == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT;
FLOAT blendFactor[4] = { 0.f, 0.f, 0.f, 0.f };
g_pd3dCommandList->SetPipelineState(g_pPipelineState);
g_pd3dCommandList->SetGraphicsRootSignature(g_pRootSignature);
g_pd3dCommandList->SetGraphicsRoot32BitConstants(0, 16, &vertexConstantBuffer, 0);
g_pd3dCommandList->IASetIndexBuffer(&ibv);
g_pd3dCommandList->IASetVertexBuffers(0, 1, &vbv);
g_pd3dCommandList->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
g_pd3dCommandList->RSSetViewports(1, &viewport);
g_pd3dCommandList->OMSetBlendFactor(blendFactor);
// Render 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
{
D3D12_RECT scissorRect = { (LONG)pcmd->ClipRect.x, (LONG)pcmd->ClipRect.y, (LONG)pcmd->ClipRect.z, (LONG)pcmd->ClipRect.w };
D3D12_GPU_DESCRIPTOR_HANDLE srvHandle = {};
srvHandle.ptr = (UINT64) pcmd->TextureId;
g_pd3dCommandList->SetGraphicsRootDescriptorTable(1, srvHandle);
g_pd3dCommandList->RSSetScissorRects(1, &scissorRect);
g_pd3dCommandList->DrawIndexedInstanced(pcmd->ElemCount, 1, idx_offset, vtx_offset, 0);
}
idx_offset += pcmd->ElemCount;
}
vtx_offset += cmd_list->VtxBuffer.size();
}
}
IMGUI_API LRESULT ImGui_ImplDX12_WndProcHandler(HWND, UINT msg, WPARAM wParam, LPARAM lParam)
{
ImGuiIO& io = ImGui::GetIO();
switch (msg)
{
case WM_LBUTTONDOWN:
io.MouseDown[0] = true;
return true;
case WM_LBUTTONUP:
io.MouseDown[0] = false;
return true;
case WM_RBUTTONDOWN:
io.MouseDown[1] = true;
return true;
case WM_RBUTTONUP:
io.MouseDown[1] = false;
return true;
case WM_MBUTTONDOWN:
io.MouseDown[2] = true;
return true;
case WM_MBUTTONUP:
io.MouseDown[2] = false;
return true;
case WM_MOUSEWHEEL:
io.MouseWheel += GET_WHEEL_DELTA_WPARAM(wParam) > 0 ? +1.0f : -1.0f;
return true;
case WM_MOUSEMOVE:
io.MousePos.x = (signed short)(lParam);
io.MousePos.y = (signed short)(lParam >> 16);
return true;
case WM_KEYDOWN:
if (wParam < 256)
io.KeysDown[wParam] = 1;
return true;
case WM_KEYUP:
if (wParam < 256)
io.KeysDown[wParam] = 0;
return true;
case WM_CHAR:
// You can also use ToAscii()+GetKeyboardState() to retrieve characters.
if (wParam > 0 && wParam < 0x10000)
io.AddInputCharacter((unsigned short)wParam);
return true;
}
return 0;
}
static void ImGui_ImplDX12_CreateFontsTexture()
{
// Build texture atlas
ImGuiIO& io = ImGui::GetIO();
unsigned char* pixels;
int width, height;
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
// Upload texture to graphics system
{
D3D12_RESOURCE_DESC resourceDesc = {};
resourceDesc.Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE2D;
resourceDesc.Alignment = 0;
resourceDesc.Width = width;
resourceDesc.Height = height;
resourceDesc.DepthOrArraySize = 1;
resourceDesc.MipLevels = 1;
resourceDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
resourceDesc.SampleDesc.Count = 1;
resourceDesc.SampleDesc.Quality = 0;
resourceDesc.Layout = D3D12_TEXTURE_LAYOUT_UNKNOWN;
resourceDesc.Flags = D3D12_RESOURCE_FLAG_NONE;
D3D12_HEAP_PROPERTIES props = {};
props.Type = D3D12_HEAP_TYPE_DEFAULT;
props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
HRESULT hr = g_pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE, &resourceDesc,
D3D12_RESOURCE_STATE_COPY_DEST, NULL, IID_PPV_ARGS(&g_pFontTextureResource));
assert(SUCCEEDED(hr));
UINT uploadPitch = (width * 4 + D3D12_TEXTURE_DATA_PITCH_ALIGNMENT - 1u) & ~(D3D12_TEXTURE_DATA_PITCH_ALIGNMENT - 1u);
UINT uploadSize = height * uploadPitch;
resourceDesc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
resourceDesc.Alignment = 0;
resourceDesc.Width = uploadSize;
resourceDesc.Height = 1;
resourceDesc.DepthOrArraySize = 1;
resourceDesc.MipLevels = 1;
resourceDesc.Format = DXGI_FORMAT_UNKNOWN;
resourceDesc.SampleDesc.Count = 1;
resourceDesc.SampleDesc.Quality = 0;
resourceDesc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
resourceDesc.Flags = D3D12_RESOURCE_FLAG_NONE;
props.Type = D3D12_HEAP_TYPE_UPLOAD;
props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
ID3D12Resource* uploadBuffer = NULL;
hr = g_pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE, &resourceDesc,
D3D12_RESOURCE_STATE_GENERIC_READ, NULL, IID_PPV_ARGS(&uploadBuffer));
assert(SUCCEEDED(hr));
void* mapped = NULL;
D3D12_RANGE range = { 0, uploadSize };
hr = uploadBuffer->Map(0, &range, &mapped);
assert(SUCCEEDED(hr));
for (int y = 0; y < height; ++y)
{
memcpy((void*) ((uintptr_t) mapped + y * uploadPitch), pixels + y * width * 4, width * 4);
}
uploadBuffer->Unmap(0, &range);
D3D12_TEXTURE_COPY_LOCATION srcLocation = {};
srcLocation.pResource = uploadBuffer;
srcLocation.Type = D3D12_TEXTURE_COPY_TYPE_PLACED_FOOTPRINT;
srcLocation.PlacedFootprint.Footprint.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
srcLocation.PlacedFootprint.Footprint.Width = width;
srcLocation.PlacedFootprint.Footprint.Height = height;
srcLocation.PlacedFootprint.Footprint.Depth = 1;
srcLocation.PlacedFootprint.Footprint.RowPitch = uploadPitch;
D3D12_TEXTURE_COPY_LOCATION dstLocation = {};
dstLocation.pResource = g_pFontTextureResource;
dstLocation.Type = D3D12_TEXTURE_COPY_TYPE_SUBRESOURCE_INDEX;
dstLocation.SubresourceIndex = 0;
D3D12_RESOURCE_BARRIER barrier = {};
barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
barrier.Transition.pResource = g_pFontTextureResource;
barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;
barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_COPY_DEST;
barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_PIXEL_SHADER_RESOURCE;
ID3D12Fence* fence = NULL;
hr = g_pd3dDevice->CreateFence(0, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&fence));
assert(SUCCEEDED(hr));
HANDLE event = CreateEvent(0, 0, 0, 0);
assert(event != NULL);
D3D12_COMMAND_QUEUE_DESC queueDesc = {};
queueDesc.Type = D3D12_COMMAND_LIST_TYPE_DIRECT;
queueDesc.Flags = D3D12_COMMAND_QUEUE_FLAG_NONE;
queueDesc.NodeMask = 1;
ID3D12CommandQueue* cmdQueue = NULL;
hr = g_pd3dDevice->CreateCommandQueue(&queueDesc, IID_PPV_ARGS(&cmdQueue));
assert(SUCCEEDED(hr));
ID3D12CommandAllocator* cmdAlloc = NULL;
hr = g_pd3dDevice->CreateCommandAllocator(D3D12_COMMAND_LIST_TYPE_DIRECT, IID_PPV_ARGS(&cmdAlloc));
assert(SUCCEEDED(hr));
ID3D12GraphicsCommandList* cmdList = NULL;
hr = g_pd3dDevice->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, cmdAlloc, NULL, IID_PPV_ARGS(&cmdList));
assert(SUCCEEDED(hr));
cmdList->CopyTextureRegion(&dstLocation, 0, 0, 0, &srcLocation, NULL);
cmdList->ResourceBarrier(1, &barrier);
hr = cmdList->Close();
assert(SUCCEEDED(hr));
cmdQueue->ExecuteCommandLists(1, (ID3D12CommandList* const*) &cmdList);
hr = cmdQueue->Signal(fence, 1);
assert(SUCCEEDED(hr));
fence->SetEventOnCompletion(1, event);
WaitForSingleObject(event, INFINITE);
cmdList->Release();
cmdAlloc->Release();
cmdQueue->Release();
CloseHandle(event);
fence->Release();
uploadBuffer->Release();
}
// Create texture view
g_pd3dDevice->CreateShaderResourceView(g_pFontTextureResource, NULL, g_hFontSrvCpuDescHandle);
// Store our identifier
static_assert(sizeof(void*) >= sizeof(g_hFontSrvGpuDescHandle.ptr), "Can't pack descriptor handle into TexID");
ImGui::GetIO().Fonts->TexID = (void*) g_hFontSrvGpuDescHandle.ptr;
}
bool ImGui_ImplDX12_CreateDeviceObjects()
{
if (!g_pd3dDevice)
return false;
if (g_pPipelineState)
ImGui_ImplDX12_InvalidateDeviceObjects();
// Create the root signature
{
D3D12_DESCRIPTOR_RANGE descRange = {};
descRange.RangeType = D3D12_DESCRIPTOR_RANGE_TYPE_SRV;
descRange.NumDescriptors = 1;
descRange.BaseShaderRegister = 0;
descRange.RegisterSpace = 0;
descRange.OffsetInDescriptorsFromTableStart = 0;
D3D12_ROOT_PARAMETER param[2] = {};
param[0].ParameterType = D3D12_ROOT_PARAMETER_TYPE_32BIT_CONSTANTS;
param[0].Constants.ShaderRegister = 0;
param[0].Constants.RegisterSpace = 0;
param[0].Constants.Num32BitValues = 16;
param[0].ShaderVisibility = D3D12_SHADER_VISIBILITY_VERTEX;
param[1].ParameterType = D3D12_ROOT_PARAMETER_TYPE_DESCRIPTOR_TABLE;
param[1].DescriptorTable.NumDescriptorRanges = 1;
param[1].DescriptorTable.pDescriptorRanges = &descRange;
param[1].ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;
D3D12_STATIC_SAMPLER_DESC staticSampler = {};
staticSampler.Filter = D3D12_FILTER_MIN_MAG_MIP_LINEAR;
staticSampler.AddressU = D3D12_TEXTURE_ADDRESS_MODE_WRAP;
staticSampler.AddressV = D3D12_TEXTURE_ADDRESS_MODE_WRAP;
staticSampler.AddressW = D3D12_TEXTURE_ADDRESS_MODE_WRAP;
staticSampler.MipLODBias = 0.f;
staticSampler.MaxAnisotropy = 0;
staticSampler.ComparisonFunc = D3D12_COMPARISON_FUNC_ALWAYS;
staticSampler.BorderColor = D3D12_STATIC_BORDER_COLOR_TRANSPARENT_BLACK;
staticSampler.MinLOD = 0.f;
staticSampler.MaxLOD = 0.f;
staticSampler.ShaderRegister = 0;
staticSampler.RegisterSpace = 0;
staticSampler.ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;
D3D12_ROOT_SIGNATURE_DESC desc = {};
desc.NumParameters = _countof(param);
desc.pParameters = param;
desc.NumStaticSamplers = 1;
desc.pStaticSamplers = &staticSampler;
desc.Flags =
D3D12_ROOT_SIGNATURE_FLAG_ALLOW_INPUT_ASSEMBLER_INPUT_LAYOUT |
D3D12_ROOT_SIGNATURE_FLAG_DENY_HULL_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_DOMAIN_SHADER_ROOT_ACCESS |
D3D12_ROOT_SIGNATURE_FLAG_DENY_GEOMETRY_SHADER_ROOT_ACCESS;
ID3DBlob* blob = NULL;
if (D3D12SerializeRootSignature(&desc, D3D_ROOT_SIGNATURE_VERSION_1, &blob, NULL) != S_OK)
return false;
g_pd3dDevice->CreateRootSignature(0, blob->GetBufferPointer(), blob->GetBufferSize(), IID_PPV_ARGS(&g_pRootSignature));
blob->Release();
}
// Create the pipeline state object
{
static const char* vertexShader =
"cbuffer vertexBuffer : register(b0) \
{\
float4x4 ProjectionMatrix; \
};\
struct VS_INPUT\
{\
float2 pos : POSITION;\
float4 col : COLOR0;\
float2 uv : TEXCOORD0;\
};\
\
struct PS_INPUT\
{\
float4 pos : SV_POSITION;\
float4 col : COLOR0;\
float2 uv : TEXCOORD0;\
};\
\
PS_INPUT main(VS_INPUT input)\
{\
PS_INPUT output;\
output.pos = mul( ProjectionMatrix, float4(input.pos.xy, 0.f, 1.f));\
output.col = input.col;\
output.uv = input.uv;\
return output;\
}";
static const char* pixelShader =
"struct PS_INPUT\
{\
float4 pos : SV_POSITION;\
float4 col : COLOR0;\
float2 uv : TEXCOORD0;\
};\
SamplerState sampler0 : register(s0);\
Texture2D texture0 : register(t0);\
\
float4 main(PS_INPUT input) : SV_Target\
{\
float4 out_col = input.col * texture0.Sample(sampler0, input.uv); \
return out_col; \
}";
D3DCompile(vertexShader, strlen(vertexShader), NULL, NULL, NULL, "main", "vs_5_0", 0, 0, &g_pVertexShaderBlob, NULL);
if (g_pVertexShaderBlob == NULL) // NB: Pass ID3D10Blob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
return false;
D3DCompile(pixelShader, strlen(pixelShader), NULL, NULL, NULL, "main", "ps_5_0", 0, 0, &g_pPixelShaderBlob, NULL);
if (g_pPixelShaderBlob == NULL) // NB: Pass ID3D10Blob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
return false;
D3D12_INPUT_ELEMENT_DESC localLayout[] = {
{ "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT, 0, (size_t)(&((ImDrawVert*)0)->pos), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
{ "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, (size_t)(&((ImDrawVert*)0)->uv), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
{ "COLOR", 0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, (size_t)(&((ImDrawVert*)0)->col), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
};
D3D12_GRAPHICS_PIPELINE_STATE_DESC desc = {};
desc.NodeMask = 1;
desc.PrimitiveTopologyType = D3D12_PRIMITIVE_TOPOLOGY_TYPE_TRIANGLE;
desc.InputLayout = { localLayout, _countof(localLayout) };
desc.pRootSignature = g_pRootSignature;
desc.VS = { g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize() };
desc.PS = { g_pPixelShaderBlob->GetBufferPointer(), g_pPixelShaderBlob->GetBufferSize() };
desc.SampleMask = UINT_MAX;
desc.NumRenderTargets = 1;
desc.RTVFormats[0] = DXGI_FORMAT_B8G8R8A8_UNORM;
desc.SampleDesc.Count = 1;
desc.Flags = D3D12_PIPELINE_STATE_FLAG_NONE;
desc.RasterizerState.FillMode = D3D12_FILL_MODE_SOLID;
desc.RasterizerState.CullMode = D3D12_CULL_MODE_NONE;
desc.RasterizerState.FrontCounterClockwise = FALSE;
desc.RasterizerState.DepthBias = D3D12_DEFAULT_DEPTH_BIAS;
desc.RasterizerState.DepthBiasClamp = D3D12_DEFAULT_DEPTH_BIAS_CLAMP;
desc.RasterizerState.SlopeScaledDepthBias = D3D12_DEFAULT_SLOPE_SCALED_DEPTH_BIAS;
desc.RasterizerState.DepthClipEnable = TRUE;
desc.RasterizerState.MultisampleEnable = FALSE;
desc.RasterizerState.AntialiasedLineEnable = FALSE;
desc.RasterizerState.ForcedSampleCount = 0;
desc.RasterizerState.ConservativeRaster = D3D12_CONSERVATIVE_RASTERIZATION_MODE_OFF;
desc.BlendState.AlphaToCoverageEnable = FALSE;
desc.BlendState.RenderTarget[0].BlendEnable = TRUE;
desc.BlendState.RenderTarget[0].SrcBlend = D3D12_BLEND_SRC_ALPHA;
desc.BlendState.RenderTarget[0].DestBlend = D3D12_BLEND_INV_SRC_ALPHA;
desc.BlendState.RenderTarget[0].BlendOp = D3D12_BLEND_OP_ADD;
desc.BlendState.RenderTarget[0].SrcBlendAlpha = D3D12_BLEND_INV_SRC_ALPHA;
desc.BlendState.RenderTarget[0].DestBlendAlpha = D3D12_BLEND_ZERO;
desc.BlendState.RenderTarget[0].BlendOpAlpha = D3D12_BLEND_OP_ADD;
desc.BlendState.RenderTarget[0].RenderTargetWriteMask = D3D12_COLOR_WRITE_ENABLE_ALL;
desc.DepthStencilState.DepthEnable = FALSE;
desc.DepthStencilState.StencilEnable = FALSE;
HRESULT hr = g_pd3dDevice->CreateGraphicsPipelineState(&desc, IID_PPV_ARGS(&g_pPipelineState));
assert(SUCCEEDED(hr));
}
ImGui_ImplDX12_CreateFontsTexture();
return true;
}
void ImGui_ImplDX12_InvalidateDeviceObjects()
{
if (!g_pd3dDevice)
return;
if (g_pVertexShaderBlob) { g_pVertexShaderBlob->Release(); g_pVertexShaderBlob = NULL; }
if (g_pPixelShaderBlob) { g_pPixelShaderBlob->Release(); g_pPixelShaderBlob = NULL; }
if (g_pRootSignature) { g_pRootSignature->Release(); g_pRootSignature = NULL; }
if (g_pPipelineState) { g_pPipelineState->Release(); g_pPipelineState = NULL; }
if (g_pFontTextureResource) { g_pFontTextureResource->Release(); g_pFontTextureResource = NULL; }
for (UINT i = 0; i < g_numFramesInFlight; ++i)
{
if (g_pFrameResources[i].IB) { g_pFrameResources[i].IB->Release(); g_pFrameResources[i].IB = NULL; }
if (g_pFrameResources[i].VB) { g_pFrameResources[i].VB->Release(); g_pFrameResources[i].VB = NULL; }
}
ImGui::GetIO().Fonts->TexID = 0;
}
bool ImGui_ImplDX12_Init(void* hwnd, int numFramesInFlight,
ID3D12Device* device, ID3D12GraphicsCommandList* cmdList,
D3D12_CPU_DESCRIPTOR_HANDLE fontSrvCpuDescHandle,
D3D12_GPU_DESCRIPTOR_HANDLE fontSrvGpuDescHandle)
{
g_hWnd = (HWND)hwnd;
g_pd3dDevice = device;
g_pd3dCommandList = cmdList;
g_hFontSrvCpuDescHandle = fontSrvCpuDescHandle;
g_hFontSrvGpuDescHandle = fontSrvGpuDescHandle;
g_pFrameResources = new FrameResources [numFramesInFlight];
g_numFramesInFlight = numFramesInFlight;
g_frameIndex = UINT_MAX;
for (int i = 0; i < numFramesInFlight; ++i)
{
g_pFrameResources[i].IB = NULL;
g_pFrameResources[i].VB = NULL;
g_pFrameResources[i].VertexBufferSize = 5000;
g_pFrameResources[i].IndexBufferSize = 10000;
}
if (!QueryPerformanceFrequency((LARGE_INTEGER *)&g_TicksPerSecond))
return false;
if (!QueryPerformanceCounter((LARGE_INTEGER *)&g_Time))
return false;
ImGuiIO& io = ImGui::GetIO();
io.KeyMap[ImGuiKey_Tab] = VK_TAB; // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array that we will update during the application lifetime.
io.KeyMap[ImGuiKey_LeftArrow] = VK_LEFT;
io.KeyMap[ImGuiKey_RightArrow] = VK_RIGHT;
io.KeyMap[ImGuiKey_UpArrow] = VK_UP;
io.KeyMap[ImGuiKey_DownArrow] = VK_DOWN;
io.KeyMap[ImGuiKey_PageUp] = VK_PRIOR;
io.KeyMap[ImGuiKey_PageDown] = VK_NEXT;
io.KeyMap[ImGuiKey_Home] = VK_HOME;
io.KeyMap[ImGuiKey_End] = VK_END;
io.KeyMap[ImGuiKey_Delete] = VK_DELETE;
io.KeyMap[ImGuiKey_Backspace] = VK_BACK;
io.KeyMap[ImGuiKey_Enter] = VK_RETURN;
io.KeyMap[ImGuiKey_Escape] = VK_ESCAPE;
io.KeyMap[ImGuiKey_A] = 'A';
io.KeyMap[ImGuiKey_C] = 'C';
io.KeyMap[ImGuiKey_V] = 'V';
io.KeyMap[ImGuiKey_X] = 'X';
io.KeyMap[ImGuiKey_Y] = 'Y';
io.KeyMap[ImGuiKey_Z] = 'Z';
io.RenderDrawListsFn = ImGui_ImplDX12_RenderDrawLists; // Alternatively you can set this to NULL and call ImGui::GetDrawData() after ImGui::Render() to get the same ImDrawData pointer.
io.ImeWindowHandle = g_hWnd;
return true;
}
void ImGui_ImplDX12_Shutdown()
{
ImGui_ImplDX12_InvalidateDeviceObjects();
ImGui::Shutdown();
delete[] g_pFrameResources;
g_pd3dDevice = NULL;
g_hWnd = (HWND)0;
g_pd3dCommandList = NULL;
g_hFontSrvCpuDescHandle.ptr = 0;
g_hFontSrvGpuDescHandle.ptr = 0;
g_pFrameResources = NULL;
g_numFramesInFlight = 0;
g_frameIndex = UINT_MAX;
}
void ImGui_ImplDX12_NewFrame()
{
if (!g_pPipelineState)
ImGui_ImplDX12_CreateDeviceObjects();
ImGuiIO& io = ImGui::GetIO();
// Setup display size (every frame to accommodate for window resizing)
RECT rect;
GetClientRect(g_hWnd, &rect);
io.DisplaySize = ImVec2((float)(rect.right - rect.left), (float)(rect.bottom - rect.top));
// Setup time step
INT64 current_time;
QueryPerformanceCounter((LARGE_INTEGER *)&current_time);
io.DeltaTime = (float)(current_time - g_Time) / g_TicksPerSecond;
g_Time = current_time;
// Read keyboard modifiers inputs
io.KeyCtrl = (GetKeyState(VK_CONTROL) & 0x8000) != 0;
io.KeyShift = (GetKeyState(VK_SHIFT) & 0x8000) != 0;
io.KeyAlt = (GetKeyState(VK_MENU) & 0x8000) != 0;
// io.KeysDown : filled by WM_KEYDOWN/WM_KEYUP events
// io.MousePos : filled by WM_MOUSEMOVE events
// io.MouseDown : filled by WM_*BUTTON* events
// io.MouseWheel : filled by WM_MOUSEWHEEL events
// Hide OS mouse cursor if ImGui is drawing it
SetCursor(io.MouseDrawCursor ? NULL : LoadCursor(NULL, IDC_ARROW));
// Start the frame
ImGui::NewFrame();
}

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// ImGui Win32 + DirectX12 binding
// 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 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::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 <d3d12.h>
// cmdList is the command list that the implementation will use to render the
// GUI.
//
// Before calling ImGui::Render(), caller must prepare cmdList by resetting it
// and setting the appropriate render target and descriptor heap that contains
// fontSrv*puDescHandle.
//
// fontSrvCpuDescHandle and fontSrvGpuDescHandle are handles to a single SRV
// descriptor to use for the internal font texture.
IMGUI_API bool ImGui_ImplDX12_Init(void* hwnd, int numFramesInFlight,
ID3D12Device* device, ID3D12GraphicsCommandList* cmdList,
D3D12_CPU_DESCRIPTOR_HANDLE fontSrvCpuDescHandle,
D3D12_GPU_DESCRIPTOR_HANDLE fontSrvGpuDescHandle);
IMGUI_API void ImGui_ImplDX12_Shutdown();
IMGUI_API void ImGui_ImplDX12_NewFrame();
// Use if you want to reset your rendering device without losing ImGui state.
IMGUI_API void ImGui_ImplDX12_InvalidateDeviceObjects();
IMGUI_API bool ImGui_ImplDX12_CreateDeviceObjects();
// Handler for Win32 messages, update mouse/keyboard data.
// You may or not need this for your implementation, but it can serve as reference for handling inputs.
// Commented out to avoid dragging dependencies on <windows.h> types. You can copy the extern declaration in your code.
/*
IMGUI_API LRESULT ImGui_ImplDX12_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
*/

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// ImGui - standalone example application for DirectX 11
// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
#include <assert.h>
#include <imgui.h>
#include "imgui_impl_dx12.h"
#include <d3d12.h>
#include <dxgi1_4.h>
#include <tchar.h>
struct FrameContext
{
ID3D12CommandAllocator* CommandAllocator;
UINT64 FenceValue;
bool FenceSignalled;
};
// Data
static int const NUM_FRAMES_IN_FLIGHT = 3;
static FrameContext g_frameContext[NUM_FRAMES_IN_FLIGHT] = {};
static UINT g_frameIndex = 0;
static int const NUM_BACK_BUFFERS = 3;
static IDXGIFactory4* g_pdxgiFactory = NULL;
static ID3D12Device* g_pd3dDevice = NULL;
static ID3D12DescriptorHeap* g_pd3dRtvDescHeap = NULL;
static ID3D12DescriptorHeap* g_pd3dSrvDescHeap = NULL;
static ID3D12CommandQueue* g_pd3dCommandQueue = NULL;
static ID3D12GraphicsCommandList* g_pd3dCommandList = NULL;
static ID3D12Fence* g_fence = NULL;
static HANDLE g_fenceEvent = NULL;
static UINT64 g_fenceLastSignalledValue = 0;
static IDXGISwapChain3* g_pSwapChain = NULL;
static HANDLE g_hSwapChainWaitableObject = NULL;
static ID3D12Resource* g_mainRenderTargetResource[NUM_BACK_BUFFERS] = {};
static D3D12_CPU_DESCRIPTOR_HANDLE g_mainRenderTargetDescriptor[NUM_BACK_BUFFERS] = {};
static void WaitForLastSubmittedFrame()
{
FrameContext* frameCtxt = &g_frameContext[g_frameIndex % NUM_FRAMES_IN_FLIGHT];
UINT64 fenceValue = frameCtxt->FenceValue;
if (fenceValue == 0) { // means no fence was signalled
return;
}
frameCtxt->FenceValue = 0;
if (g_fence->GetCompletedValue() >= fenceValue) {
return;
}
HRESULT hr = g_fence->SetEventOnCompletion(fenceValue, g_fenceEvent);
assert(SUCCEEDED(hr));
WaitForSingleObject(g_fenceEvent, INFINITE);
}
static FrameContext* WaitForNextFrameResources()
{
UINT nextFrameIndex = g_frameIndex + 1;
g_frameIndex = nextFrameIndex;
HANDLE waitableObjects[] = {
g_hSwapChainWaitableObject,
NULL,
};
DWORD numWaitableObjects = 1;
FrameContext* frameCtxt = &g_frameContext[nextFrameIndex % NUM_FRAMES_IN_FLIGHT];
UINT64 fenceValue = frameCtxt->FenceValue;
if (fenceValue != 0) { // means no fence was signalled
frameCtxt->FenceValue = 0;
HRESULT hr = g_fence->SetEventOnCompletion(fenceValue, g_fenceEvent);
assert(SUCCEEDED(hr));
waitableObjects[1] = g_fenceEvent;
numWaitableObjects = 2;
}
HRESULT hr = WaitForMultipleObjects(numWaitableObjects, waitableObjects, TRUE, INFINITE);
assert(SUCCEEDED(hr));
return frameCtxt;
}
void CreateRenderTarget(HWND hWnd, int width, int height)
{
DXGI_SWAP_CHAIN_DESC1 desc = {};
desc.Width = width;
desc.Height = height;
desc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
desc.Stereo = FALSE;
desc.SampleDesc.Count = 1;
desc.SampleDesc.Quality = 0;
desc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
desc.BufferCount = NUM_BACK_BUFFERS;
desc.Scaling = DXGI_SCALING_STRETCH;
desc.SwapEffect = DXGI_SWAP_EFFECT_FLIP_DISCARD;
desc.AlphaMode = DXGI_ALPHA_MODE_UNSPECIFIED;
desc.Flags = DXGI_SWAP_CHAIN_FLAG_FRAME_LATENCY_WAITABLE_OBJECT;
IDXGISwapChain1* swapChain1 = NULL;
HRESULT hr = g_pdxgiFactory->CreateSwapChainForHwnd(g_pd3dCommandQueue, hWnd, &desc, NULL, NULL, &swapChain1);
assert(SUCCEEDED(hr));
hr = swapChain1->QueryInterface(IID_PPV_ARGS(&g_pSwapChain));
assert(SUCCEEDED(hr));
swapChain1->Release();
hr = g_pSwapChain->SetMaximumFrameLatency(NUM_BACK_BUFFERS);
assert(SUCCEEDED(hr));
g_hSwapChainWaitableObject = g_pSwapChain->GetFrameLatencyWaitableObject();
assert(g_hSwapChainWaitableObject != NULL);
for (UINT i = 0; i < NUM_BACK_BUFFERS; ++i)
{
hr = g_pSwapChain->GetBuffer(i, IID_PPV_ARGS(&g_mainRenderTargetResource[i]));
assert(SUCCEEDED(hr));
g_pd3dDevice->CreateRenderTargetView(g_mainRenderTargetResource[i], NULL, g_mainRenderTargetDescriptor[i]);
}
}
void CleanupRenderTarget()
{
WaitForLastSubmittedFrame();
if (g_pSwapChain) { g_pSwapChain->Release(); g_pSwapChain = NULL; }
for (UINT i = 0; i < NUM_BACK_BUFFERS; ++i)
{
if (g_mainRenderTargetResource[i]) { g_mainRenderTargetResource[i]->Release(); g_mainRenderTargetResource[i] = NULL; }
}
if (g_hSwapChainWaitableObject != NULL) { CloseHandle(g_hSwapChainWaitableObject); }
}
HRESULT CreateDeviceD3D(HWND hWnd)
{
(void) hWnd;
#ifdef _DEBUG
{
ID3D12Debug* debugController = NULL;
if (SUCCEEDED(D3D12GetDebugInterface(IID_PPV_ARGS(&debugController))))
{
debugController->EnableDebugLayer();
debugController->Release();
}
}
#endif
if (CreateDXGIFactory1(IID_PPV_ARGS(&g_pdxgiFactory)) != S_OK)
return E_FAIL;
IDXGIAdapter1* adapter = NULL;
for (UINT adapterIndex = 0; DXGI_ERROR_NOT_FOUND != g_pdxgiFactory->EnumAdapters1(adapterIndex, &adapter); ++adapterIndex)
{
DXGI_ADAPTER_DESC1 desc = {};
adapter->GetDesc1(&desc);
if (desc.Flags & DXGI_ADAPTER_FLAG_SOFTWARE)
{
adapter->Release();
continue;
}
if (FAILED(D3D12CreateDevice(adapter, D3D_FEATURE_LEVEL_11_0, _uuidof(ID3D12Device), NULL)))
{
adapter->Release();
continue;
}
break;
}
HRESULT hr = D3D12CreateDevice(adapter, D3D_FEATURE_LEVEL_11_0, IID_PPV_ARGS(&g_pd3dDevice));
if (adapter != NULL)
{
adapter->Release();
}
if (FAILED(hr))
return hr;
{
D3D12_DESCRIPTOR_HEAP_DESC desc = {};
desc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_RTV;
desc.NumDescriptors = NUM_BACK_BUFFERS;
desc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_NONE;
desc.NodeMask = 1;
if (g_pd3dDevice->CreateDescriptorHeap(&desc, IID_PPV_ARGS(&g_pd3dRtvDescHeap)) != S_OK)
return E_FAIL;
SIZE_T rtvDescriptorSize = g_pd3dDevice->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_RTV);
D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle = g_pd3dRtvDescHeap->GetCPUDescriptorHandleForHeapStart();
for (UINT i = 0; i < NUM_BACK_BUFFERS; ++i) {
g_mainRenderTargetDescriptor[i] = rtvHandle;
rtvHandle.ptr += rtvDescriptorSize;
}
}
{
D3D12_DESCRIPTOR_HEAP_DESC desc = {};
desc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;
desc.NumDescriptors = 1;
desc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;
if (g_pd3dDevice->CreateDescriptorHeap(&desc, IID_PPV_ARGS(&g_pd3dSrvDescHeap)) != S_OK)
return E_FAIL;
}
{
D3D12_COMMAND_QUEUE_DESC desc = {};
desc.Type = D3D12_COMMAND_LIST_TYPE_DIRECT;
desc.Flags = D3D12_COMMAND_QUEUE_FLAG_NONE;
desc.NodeMask = 1;
if (g_pd3dDevice->CreateCommandQueue(&desc, IID_PPV_ARGS(&g_pd3dCommandQueue)) != S_OK)
return E_FAIL;
}
for (UINT i = 0; i < NUM_FRAMES_IN_FLIGHT; ++i)
{
if (g_pd3dDevice->CreateCommandAllocator(D3D12_COMMAND_LIST_TYPE_DIRECT, IID_PPV_ARGS(&g_frameContext[i].CommandAllocator)) != S_OK)
return E_FAIL;
}
if (g_pd3dDevice->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, g_frameContext[0].CommandAllocator, NULL, IID_PPV_ARGS(&g_pd3dCommandList)) != S_OK ||
g_pd3dCommandList->Close() != S_OK)
return E_FAIL;
if (g_pd3dDevice->CreateFence(0, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&g_fence)) != S_OK)
return E_FAIL;
g_fenceEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
if (g_fenceEvent == NULL)
return E_FAIL;
return S_OK;
}
void CleanupDeviceD3D()
{
CleanupRenderTarget();
for (UINT i = 0; i < NUM_FRAMES_IN_FLIGHT; ++i)
{
if (g_frameContext[i].CommandAllocator) { g_frameContext[i].CommandAllocator->Release(); g_frameContext[i].CommandAllocator = NULL; }
}
if (g_pd3dCommandQueue) { g_pd3dCommandQueue->Release(); g_pd3dCommandQueue = NULL; }
if (g_pd3dCommandList) { g_pd3dCommandList->Release(); g_pd3dCommandList = NULL; }
if (g_pd3dRtvDescHeap) { g_pd3dRtvDescHeap->Release(); g_pd3dRtvDescHeap = NULL; }
if (g_pd3dSrvDescHeap) { g_pd3dSrvDescHeap->Release(); g_pd3dSrvDescHeap = NULL; }
if (g_fence) { g_fence->Release(); g_fence = NULL; }
if (g_fenceEvent) { CloseHandle(g_fenceEvent); g_fenceEvent = NULL; }
if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
if (g_pdxgiFactory) { g_pdxgiFactory->Release(); g_pdxgiFactory = NULL; }
}
extern LRESULT ImGui_ImplDX12_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
if (ImGui_ImplDX12_WndProcHandler(hWnd, msg, wParam, lParam))
return true;
switch (msg)
{
case WM_SIZE:
if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
{
ImGui_ImplDX12_InvalidateDeviceObjects();
CleanupRenderTarget();
CreateRenderTarget(hWnd, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam));
ImGui_ImplDX12_CreateDeviceObjects();
}
return 0;
case WM_SYSCOMMAND:
if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
return 0;
break;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hWnd, msg, wParam, lParam);
}
int main(int, char**)
{
// Create application window
WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, LoadCursor(NULL, IDC_ARROW), NULL, NULL, _T("ImGui Example"), NULL };
RegisterClassEx(&wc);
HWND hwnd = CreateWindow(_T("ImGui Example"), _T("ImGui DirectX12 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
// Initialize Direct3D
if (CreateDeviceD3D(hwnd) < 0)
{
CleanupDeviceD3D();
UnregisterClass(_T("ImGui Example"), wc.hInstance);
return 1;
}
// Show the window
ShowWindow(hwnd, SW_SHOWDEFAULT);
UpdateWindow(hwnd);
// Setup ImGui binding
ImGui_ImplDX12_Init(hwnd, NUM_FRAMES_IN_FLIGHT, g_pd3dDevice, g_pd3dCommandList,
g_pd3dSrvDescHeap->GetCPUDescriptorHandleForHeapStart(),
g_pd3dSrvDescHeap->GetGPUDescriptorHandleForHeapStart());
// Load Fonts
// (there is a default font, this is only if you want to change it. see extra_fonts/README.txt for more details)
//ImGuiIO& io = ImGui::GetIO();
//io.Fonts->AddFontDefault();
//io.Fonts->AddFontFromFileTTF("../../extra_fonts/Cousine-Regular.ttf", 15.0f);
//io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
//io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f);
//io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f);
//io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
bool show_test_window = true;
bool show_another_window = false;
ImVec4 clear_col = ImColor(114, 144, 154);
// Main loop
MSG msg;
ZeroMemory(&msg, sizeof(msg));
while (msg.message != WM_QUIT)
{
if (PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
continue;
}
// Wait for frame resources to be available
ImGui_ImplDX12_NewFrame();
// 1. Show a simple window
// Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug"
{
static float f = 0.0f;
ImGui::Text("Hello, world!");
ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
ImGui::ColorEdit3("clear color", (float*)&clear_col);
if (ImGui::Button("Test Window")) show_test_window ^= 1;
if (ImGui::Button("Another Window")) show_another_window ^= 1;
ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
}
// 2. Show another simple window, this time using an explicit Begin/End pair
if (show_another_window)
{
ImGui::SetNextWindowSize(ImVec2(200,100), ImGuiSetCond_FirstUseEver);
ImGui::Begin("Another Window", &show_another_window);
ImGui::Text("Hello");
ImGui::End();
}
// 3. Show the ImGui test window. Most of the sample code is in ImGui::ShowTestWindow()
if (show_test_window)
{
ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCond_FirstUseEver); // Normally user code doesn't need/want to call it because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
ImGui::ShowTestWindow(&show_test_window);
}
// Rendering
FrameContext* frameCtxt = WaitForNextFrameResources();
UINT backBufferIdx = g_pSwapChain->GetCurrentBackBufferIndex();
HRESULT hr = frameCtxt->CommandAllocator->Reset();
assert(SUCCEEDED(hr));
hr = g_pd3dCommandList->Reset(frameCtxt->CommandAllocator, NULL);
assert(SUCCEEDED(hr));
D3D12_RESOURCE_BARRIER barrier = {};
barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
barrier.Transition.pResource = g_mainRenderTargetResource[backBufferIdx];
barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;
barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_PRESENT;
barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_RENDER_TARGET;
g_pd3dCommandList->ResourceBarrier(1, &barrier);
g_pd3dCommandList->ClearRenderTargetView(g_mainRenderTargetDescriptor[backBufferIdx], (float*)&clear_col, 0, NULL);
g_pd3dCommandList->OMSetRenderTargets(1, &g_mainRenderTargetDescriptor[backBufferIdx], FALSE, NULL);
g_pd3dCommandList->SetDescriptorHeaps(1, &g_pd3dSrvDescHeap);
ImGui::Render();
barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_RENDER_TARGET;
barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_PRESENT;
g_pd3dCommandList->ResourceBarrier(1, &barrier);
hr = g_pd3dCommandList->Close();
assert(SUCCEEDED(hr));
g_pd3dCommandQueue->ExecuteCommandLists(1, (ID3D12CommandList* const*) &g_pd3dCommandList);
hr = g_pSwapChain->Present(1, 0);
assert(SUCCEEDED(hr));
auto fenceValue = g_fenceLastSignalledValue + 1;
hr = g_pd3dCommandQueue->Signal(g_fence, fenceValue);
assert(SUCCEEDED(hr));
g_fenceLastSignalledValue = fenceValue;
frameCtxt->FenceValue = fenceValue;
}
ImGui_ImplDX12_Shutdown();
CleanupDeviceD3D();
UnregisterClass(_T("ImGui Example"), wc.hInstance);
return 0;
}

10
examples/imgui_examples_msvc2010.sln
View File

@ -7,6 +7,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "directx9_example", "directx
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "directx11_example", "directx11_example\directx11_example.vcxproj", "{9F316E83-5AE5-4939-A723-305A94F48005}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "directx12_example", "directx12_example\directx12_example.vcxproj", "{B4CF9797-519D-4AFE-A8F4-5141A6B521D3}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "opengl3_example", "opengl3_example\opengl3_example.vcxproj", "{4A1FB5EA-22F5-42A8-AB92-1D2DF5D47FB9}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "directx10_example", "directx10_example\directx10_example.vcxproj", "{345A953E-A004-4648-B442-DC5F9F11068C}"
@ -43,6 +45,14 @@ Global
{9F316E83-5AE5-4939-A723-305A94F48005}.Release|Win32.Build.0 = Release|Win32
{9F316E83-5AE5-4939-A723-305A94F48005}.Release|x64.ActiveCfg = Release|x64
{9F316E83-5AE5-4939-A723-305A94F48005}.Release|x64.Build.0 = Release|x64
{B4CF9797-519D-4AFE-A8F4-5141A6B521D3}.Debug|Win32.ActiveCfg = Debug|Win32
{B4CF9797-519D-4AFE-A8F4-5141A6B521D3}.Debug|Win32.Build.0 = Debug|Win32
{B4CF9797-519D-4AFE-A8F4-5141A6B521D3}.Debug|x64.ActiveCfg = Debug|x64
{B4CF9797-519D-4AFE-A8F4-5141A6B521D3}.Debug|x64.Build.0 = Debug|x64
{B4CF9797-519D-4AFE-A8F4-5141A6B521D3}.Release|Win32.ActiveCfg = Release|Win32
{B4CF9797-519D-4AFE-A8F4-5141A6B521D3}.Release|Win32.Build.0 = Release|Win32
{B4CF9797-519D-4AFE-A8F4-5141A6B521D3}.Release|x64.ActiveCfg = Release|x64
{B4CF9797-519D-4AFE-A8F4-5141A6B521D3}.Release|x64.Build.0 = Release|x64
{4A1FB5EA-22F5-42A8-AB92-1D2DF5D47FB9}.Debug|Win32.ActiveCfg = Debug|Win32
{4A1FB5EA-22F5-42A8-AB92-1D2DF5D47FB9}.Debug|Win32.Build.0 = Debug|Win32
{4A1FB5EA-22F5-42A8-AB92-1D2DF5D47FB9}.Debug|x64.ActiveCfg = Debug|x64