// ImGui Win32 + DirectX10 binding // In this binding, ImTextureID is used to store a 'ID3D10ShaderResourceView*' texture identifier. Read the FAQ about ImTextureID in imgui.cpp. // 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_dx10.h" // DirectX #include <d3d10_1.h> #include <d3d10.h> #include <d3dcompiler.h> #define DIRECTINPUT_VERSION 0x0800 #include <dinput.h> // Data static INT64 g_Time = 0; static INT64 g_TicksPerSecond = 0; static HWND g_hWnd = 0; static ID3D10Device* g_pd3dDevice = NULL; static ID3D10Buffer* g_pVB = NULL; static ID3D10Buffer* g_pIB = NULL; static ID3D10Blob * g_pVertexShaderBlob = NULL; static ID3D10VertexShader* g_pVertexShader = NULL; static ID3D10InputLayout* g_pInputLayout = NULL; static ID3D10Buffer* g_pVertexConstantBuffer = NULL; static ID3D10Blob * g_pPixelShaderBlob = NULL; static ID3D10PixelShader* g_pPixelShader = NULL; static ID3D10SamplerState* g_pFontSampler = NULL; static ID3D10ShaderResourceView*g_pFontTextureView = NULL; static ID3D10RasterizerState* g_pRasterizerState = NULL; static ID3D10BlendState* g_pBlendState = NULL; static ID3D10DepthStencilState* g_pDepthStencilState = NULL; static int g_VertexBufferSize = 5000, g_IndexBufferSize = 10000; 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_ImplDX10_RenderDrawLists(ImDrawData* draw_data) { ID3D10Device* ctx = g_pd3dDevice; // Create and grow vertex/index buffers if needed if (!g_pVB || g_VertexBufferSize < draw_data->TotalVtxCount) { if (g_pVB) { g_pVB->Release(); g_pVB = NULL; } g_VertexBufferSize = draw_data->TotalVtxCount + 5000; D3D10_BUFFER_DESC desc; memset(&desc, 0, sizeof(D3D10_BUFFER_DESC)); desc.Usage = D3D10_USAGE_DYNAMIC; desc.ByteWidth = g_VertexBufferSize * sizeof(ImDrawVert); desc.BindFlags = D3D10_BIND_VERTEX_BUFFER; desc.CPUAccessFlags = D3D10_CPU_ACCESS_WRITE; desc.MiscFlags = 0; if (ctx->CreateBuffer(&desc, NULL, &g_pVB) < 0) return; } if (!g_pIB || g_IndexBufferSize < draw_data->TotalIdxCount) { if (g_pIB) { g_pIB->Release(); g_pIB = NULL; } g_IndexBufferSize = draw_data->TotalIdxCount + 10000; D3D10_BUFFER_DESC desc; memset(&desc, 0, sizeof(D3D10_BUFFER_DESC)); desc.Usage = D3D10_USAGE_DYNAMIC; desc.ByteWidth = g_IndexBufferSize * sizeof(ImDrawIdx); desc.BindFlags = D3D10_BIND_INDEX_BUFFER; desc.CPUAccessFlags = D3D10_CPU_ACCESS_WRITE; if (ctx->CreateBuffer(&desc, NULL, &g_pIB) < 0) return; } // Copy and convert all vertices into a single contiguous buffer ImDrawVert* vtx_dst = NULL; ImDrawIdx* idx_dst = NULL; g_pVB->Map(D3D10_MAP_WRITE_DISCARD, 0, (void**)&vtx_dst); g_pIB->Map(D3D10_MAP_WRITE_DISCARD, 0, (void**)&idx_dst); 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(); } g_pVB->Unmap(); g_pIB->Unmap(); // Setup orthographic projection matrix into our constant buffer { void* mapped_resource; if (g_pVertexConstantBuffer->Map(D3D10_MAP_WRITE_DISCARD, 0, &mapped_resource) != S_OK) return; VERTEX_CONSTANT_BUFFER* constant_buffer = (VERTEX_CONSTANT_BUFFER*)mapped_resource; 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(&constant_buffer->mvp, mvp, sizeof(mvp)); g_pVertexConstantBuffer->Unmap(); } // Backup DX state that will be modified to restore it afterwards (unfortunately this is very ugly looking and verbose. Close your eyes!) struct BACKUP_DX10_STATE { UINT ScissorRectsCount, ViewportsCount; D3D10_RECT ScissorRects[D3D10_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE]; D3D10_VIEWPORT Viewports[D3D10_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE]; ID3D10RasterizerState* RS; ID3D10BlendState* BlendState; FLOAT BlendFactor[4]; UINT SampleMask; UINT StencilRef; ID3D10DepthStencilState* DepthStencilState; ID3D10ShaderResourceView* PSShaderResource; ID3D10SamplerState* PSSampler; ID3D10PixelShader* PS; ID3D10VertexShader* VS; D3D10_PRIMITIVE_TOPOLOGY PrimitiveTopology; ID3D10Buffer* IndexBuffer, *VertexBuffer, *VSConstantBuffer; UINT IndexBufferOffset, VertexBufferStride, VertexBufferOffset; DXGI_FORMAT IndexBufferFormat; ID3D10InputLayout* InputLayout; }; BACKUP_DX10_STATE old; old.ScissorRectsCount = old.ViewportsCount = D3D10_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE; ctx->RSGetScissorRects(&old.ScissorRectsCount, old.ScissorRects); ctx->RSGetViewports(&old.ViewportsCount, old.Viewports); ctx->RSGetState(&old.RS); ctx->OMGetBlendState(&old.BlendState, old.BlendFactor, &old.SampleMask); ctx->OMGetDepthStencilState(&old.DepthStencilState, &old.StencilRef); ctx->PSGetShaderResources(0, 1, &old.PSShaderResource); ctx->PSGetSamplers(0, 1, &old.PSSampler); ctx->PSGetShader(&old.PS); ctx->VSGetShader(&old.VS); ctx->VSGetConstantBuffers(0, 1, &old.VSConstantBuffer); ctx->IAGetPrimitiveTopology(&old.PrimitiveTopology); ctx->IAGetIndexBuffer(&old.IndexBuffer, &old.IndexBufferFormat, &old.IndexBufferOffset); ctx->IAGetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset); ctx->IAGetInputLayout(&old.InputLayout); // Setup viewport D3D10_VIEWPORT vp; memset(&vp, 0, sizeof(D3D10_VIEWPORT)); vp.Width = (UINT)ImGui::GetIO().DisplaySize.x; vp.Height = (UINT)ImGui::GetIO().DisplaySize.y; vp.MinDepth = 0.0f; vp.MaxDepth = 1.0f; vp.TopLeftX = vp.TopLeftY = 0; ctx->RSSetViewports(1, &vp); // Bind shader and vertex buffers unsigned int stride = sizeof(ImDrawVert); unsigned int offset = 0; ctx->IASetInputLayout(g_pInputLayout); ctx->IASetVertexBuffers(0, 1, &g_pVB, &stride, &offset); ctx->IASetIndexBuffer(g_pIB, sizeof(ImDrawIdx) == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT, 0); ctx->IASetPrimitiveTopology(D3D10_PRIMITIVE_TOPOLOGY_TRIANGLELIST); ctx->VSSetShader(g_pVertexShader); ctx->VSSetConstantBuffers(0, 1, &g_pVertexConstantBuffer); ctx->PSSetShader(g_pPixelShader); ctx->PSSetSamplers(0, 1, &g_pFontSampler); // Setup render state const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f }; ctx->OMSetBlendState(g_pBlendState, blend_factor, 0xffffffff); ctx->OMSetDepthStencilState(g_pDepthStencilState, 0); ctx->RSSetState(g_pRasterizerState); // 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 { const D3D10_RECT r = { (LONG)pcmd->ClipRect.x, (LONG)pcmd->ClipRect.y, (LONG)pcmd->ClipRect.z, (LONG)pcmd->ClipRect.w }; ctx->PSSetShaderResources(0, 1, (ID3D10ShaderResourceView**)&pcmd->TextureId); ctx->RSSetScissorRects(1, &r); ctx->DrawIndexed(pcmd->ElemCount, idx_offset, vtx_offset); } idx_offset += pcmd->ElemCount; } vtx_offset += cmd_list->VtxBuffer.size(); } // Restore modified DX state ctx->RSSetScissorRects(old.ScissorRectsCount, old.ScissorRects); ctx->RSSetViewports(old.ViewportsCount, old.Viewports); ctx->RSSetState(old.RS); if (old.RS) old.RS->Release(); ctx->OMSetBlendState(old.BlendState, old.BlendFactor, old.SampleMask); if (old.BlendState) old.BlendState->Release(); ctx->OMSetDepthStencilState(old.DepthStencilState, old.StencilRef); if (old.DepthStencilState) old.DepthStencilState->Release(); ctx->PSSetShaderResources(0, 1, &old.PSShaderResource); if (old.PSShaderResource) old.PSShaderResource->Release(); ctx->PSSetSamplers(0, 1, &old.PSSampler); if (old.PSSampler) old.PSSampler->Release(); ctx->PSSetShader(old.PS); if (old.PS) old.PS->Release(); ctx->VSSetShader(old.VS); if (old.VS) old.VS->Release(); ctx->VSSetConstantBuffers(0, 1, &old.VSConstantBuffer); if (old.VSConstantBuffer) old.VSConstantBuffer->Release(); ctx->IASetPrimitiveTopology(old.PrimitiveTopology); ctx->IASetIndexBuffer(old.IndexBuffer, old.IndexBufferFormat, old.IndexBufferOffset); if (old.IndexBuffer) old.IndexBuffer->Release(); ctx->IASetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset); if (old.VertexBuffer) old.VertexBuffer->Release(); ctx->IASetInputLayout(old.InputLayout); if (old.InputLayout) old.InputLayout->Release(); } IMGUI_API LRESULT ImGui_ImplDX10_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_ImplDX10_CreateFontsTexture() { ImGuiIO& io = ImGui::GetIO(); // Build unsigned char* pixels; int width, height; io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); // Create DX10 texture { D3D10_TEXTURE2D_DESC desc; ZeroMemory(&desc, sizeof(desc)); desc.Width = width; desc.Height = height; desc.MipLevels = 1; desc.ArraySize = 1; desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; desc.SampleDesc.Count = 1; desc.Usage = D3D10_USAGE_DEFAULT; desc.BindFlags = D3D10_BIND_SHADER_RESOURCE; desc.CPUAccessFlags = 0; ID3D10Texture2D *pTexture = NULL; D3D10_SUBRESOURCE_DATA subResource; subResource.pSysMem = pixels; subResource.SysMemPitch = desc.Width * 4; subResource.SysMemSlicePitch = 0; g_pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture); // Create texture view D3D10_SHADER_RESOURCE_VIEW_DESC srv_desc; ZeroMemory(&srv_desc, sizeof(srv_desc)); srv_desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; srv_desc.ViewDimension = D3D10_SRV_DIMENSION_TEXTURE2D; srv_desc.Texture2D.MipLevels = desc.MipLevels; srv_desc.Texture2D.MostDetailedMip = 0; g_pd3dDevice->CreateShaderResourceView(pTexture, &srv_desc, &g_pFontTextureView); pTexture->Release(); } // Store our identifier io.Fonts->TexID = (void *)g_pFontTextureView; // Create texture sampler { D3D10_SAMPLER_DESC desc; ZeroMemory(&desc, sizeof(desc)); desc.Filter = D3D10_FILTER_MIN_MAG_MIP_LINEAR; desc.AddressU = D3D10_TEXTURE_ADDRESS_WRAP; desc.AddressV = D3D10_TEXTURE_ADDRESS_WRAP; desc.AddressW = D3D10_TEXTURE_ADDRESS_WRAP; desc.MipLODBias = 0.f; desc.ComparisonFunc = D3D10_COMPARISON_ALWAYS; desc.MinLOD = 0.f; desc.MaxLOD = 0.f; g_pd3dDevice->CreateSamplerState(&desc, &g_pFontSampler); } // Cleanup (don't clear the input data if you want to append new fonts later) io.Fonts->ClearInputData(); io.Fonts->ClearTexData(); } bool ImGui_ImplDX10_CreateDeviceObjects() { if (!g_pd3dDevice) return false; if (g_pFontSampler) ImGui_ImplDX10_InvalidateDeviceObjects(); // By using D3DCompile() from <d3dcompiler.h> / d3dcompiler.lib, we introduce a dependency to a given version of d3dcompiler_XX.dll (see D3DCOMPILER_DLL_A) // If you would like to use this DX11 sample code but remove this dependency you can: // 1) compile once, save the compiled shader blobs into a file or source code and pass them to CreateVertexShader()/CreatePixelShader() [prefered solution] // 2) use code to detect any version of the DLL and grab a pointer to D3DCompile from the DLL. // See https://github.com/ocornut/imgui/pull/638 for sources and details. // Create the vertex shader { 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;\ }"; D3DCompile(vertexShader, strlen(vertexShader), NULL, NULL, NULL, "main", "vs_4_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; if (g_pd3dDevice->CreateVertexShader((DWORD*)g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), &g_pVertexShader) != S_OK) return false; // Create the input layout D3D10_INPUT_ELEMENT_DESC local_layout[] = { { "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT, 0, (size_t)(&((ImDrawVert*)0)->pos), D3D10_INPUT_PER_VERTEX_DATA, 0 }, { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, (size_t)(&((ImDrawVert*)0)->uv), D3D10_INPUT_PER_VERTEX_DATA, 0 }, { "COLOR", 0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, (size_t)(&((ImDrawVert*)0)->col), D3D10_INPUT_PER_VERTEX_DATA, 0 }, }; if (g_pd3dDevice->CreateInputLayout(local_layout, 3, g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), &g_pInputLayout) != S_OK) return false; // Create the constant buffer { D3D10_BUFFER_DESC desc; desc.ByteWidth = sizeof(VERTEX_CONSTANT_BUFFER); desc.Usage = D3D10_USAGE_DYNAMIC; desc.BindFlags = D3D10_BIND_CONSTANT_BUFFER; desc.CPUAccessFlags = D3D10_CPU_ACCESS_WRITE; desc.MiscFlags = 0; g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pVertexConstantBuffer); } } // Create the pixel shader { static const char* pixelShader = "struct PS_INPUT\ {\ float4 pos : SV_POSITION;\ float4 col : COLOR0;\ float2 uv : TEXCOORD0;\ };\ sampler sampler0;\ Texture2D texture0;\ \ float4 main(PS_INPUT input) : SV_Target\ {\ float4 out_col = input.col * texture0.Sample(sampler0, input.uv); \ return out_col; \ }"; D3DCompile(pixelShader, strlen(pixelShader), NULL, NULL, NULL, "main", "ps_4_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; if (g_pd3dDevice->CreatePixelShader((DWORD*)g_pPixelShaderBlob->GetBufferPointer(), g_pPixelShaderBlob->GetBufferSize(), &g_pPixelShader) != S_OK) return false; } // Create the blending setup { D3D10_BLEND_DESC desc; ZeroMemory(&desc, sizeof(desc)); desc.AlphaToCoverageEnable = false; desc.BlendEnable[0] = true; desc.SrcBlend = D3D10_BLEND_SRC_ALPHA; desc.DestBlend = D3D10_BLEND_INV_SRC_ALPHA; desc.BlendOp = D3D10_BLEND_OP_ADD; desc.SrcBlendAlpha = D3D10_BLEND_INV_SRC_ALPHA; desc.DestBlendAlpha = D3D10_BLEND_ZERO; desc.BlendOpAlpha = D3D10_BLEND_OP_ADD; desc.RenderTargetWriteMask[0] = D3D10_COLOR_WRITE_ENABLE_ALL; g_pd3dDevice->CreateBlendState(&desc, &g_pBlendState); } // Create the rasterizer state { D3D10_RASTERIZER_DESC desc; ZeroMemory(&desc, sizeof(desc)); desc.FillMode = D3D10_FILL_SOLID; desc.CullMode = D3D10_CULL_NONE; desc.ScissorEnable = true; desc.DepthClipEnable = true; g_pd3dDevice->CreateRasterizerState(&desc, &g_pRasterizerState); } // Create depth-stencil State { D3D10_DEPTH_STENCIL_DESC desc; ZeroMemory(&desc, sizeof(desc)); desc.DepthEnable = false; desc.DepthWriteMask = D3D10_DEPTH_WRITE_MASK_ALL; desc.DepthFunc = D3D10_COMPARISON_ALWAYS; desc.StencilEnable = false; desc.FrontFace.StencilFailOp = desc.FrontFace.StencilDepthFailOp = desc.FrontFace.StencilPassOp = D3D10_STENCIL_OP_KEEP; desc.FrontFace.StencilFunc = D3D10_COMPARISON_ALWAYS; desc.BackFace = desc.FrontFace; g_pd3dDevice->CreateDepthStencilState(&desc, &g_pDepthStencilState); } ImGui_ImplDX10_CreateFontsTexture(); return true; } void ImGui_ImplDX10_InvalidateDeviceObjects() { if (!g_pd3dDevice) return; if (g_pFontSampler) { g_pFontSampler->Release(); g_pFontSampler = NULL; } if (g_pFontTextureView) { g_pFontTextureView->Release(); g_pFontTextureView = NULL; ImGui::GetIO().Fonts->TexID = 0; } if (g_pIB) { g_pIB->Release(); g_pIB = NULL; } if (g_pVB) { g_pVB->Release(); g_pVB = NULL; } if (g_pBlendState) { g_pBlendState->Release(); g_pBlendState = NULL; } if (g_pDepthStencilState) { g_pDepthStencilState->Release(); g_pDepthStencilState = NULL; } if (g_pRasterizerState) { g_pRasterizerState->Release(); g_pRasterizerState = NULL; } if (g_pPixelShader) { g_pPixelShader->Release(); g_pPixelShader = NULL; } if (g_pPixelShaderBlob) { g_pPixelShaderBlob->Release(); g_pPixelShaderBlob = NULL; } if (g_pVertexConstantBuffer) { g_pVertexConstantBuffer->Release(); g_pVertexConstantBuffer = NULL; } if (g_pInputLayout) { g_pInputLayout->Release(); g_pInputLayout = NULL; } if (g_pVertexShader) { g_pVertexShader->Release(); g_pVertexShader = NULL; } if (g_pVertexShaderBlob) { g_pVertexShaderBlob->Release(); g_pVertexShaderBlob = NULL; } } bool ImGui_ImplDX10_Init(void* hwnd, ID3D10Device* device) { g_hWnd = (HWND)hwnd; g_pd3dDevice = device; 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_ImplDX10_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_ImplDX10_Shutdown() { ImGui_ImplDX10_InvalidateDeviceObjects(); ImGui::Shutdown(); g_pd3dDevice = NULL; g_hWnd = (HWND)0; } void ImGui_ImplDX10_NewFrame() { if (!g_pFontSampler) ImGui_ImplDX10_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 *)¤t_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.KeySuper = false; // 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 // Set OS mouse position if requested last frame by io.WantMoveMouse flag (used when io.NavMovesTrue is enabled by user and using directional navigation) if (io.WantMoveMouse) { POINT pos = { (int)io.MousePos.x, (int)io.MousePos.y }; ClientToScreen(g_hWnd, &pos); SetCursorPos(pos.x, pos.y); } // Hide OS mouse cursor if ImGui is drawing it SetCursor(io.MouseDrawCursor ? NULL : LoadCursor(NULL, IDC_ARROW)); // Start the frame ImGui::NewFrame(); }