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Examples: Refactored directx11_example to be easier to copy & paste into user application.

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This commit is contained in:
ocornut 2015-03-09 13:45:23 +00:00
parent 567184dc9f
commit b4165c43ff
7 changed files with 512 additions and 459 deletions
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6
examples/directx11_example/directx11_example.vcxproj
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@ -48,7 +48,7 @@
<ClCompile> <ClCompile>
<WarningLevel>Level3</WarningLevel> <WarningLevel>Level3</WarningLevel>
<Optimization>Disabled</Optimization> <Optimization>Disabled</Optimization>
<AdditionalIncludeDirectories>$(DXSDK_DIR)/Include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories> <AdditionalIncludeDirectories>..\..;$(DXSDK_DIR)/Include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
</ClCompile> </ClCompile>
<Link> <Link>
<GenerateDebugInformation>true</GenerateDebugInformation> <GenerateDebugInformation>true</GenerateDebugInformation>
@ -63,7 +63,7 @@
<Optimization>MaxSpeed</Optimization> <Optimization>MaxSpeed</Optimization>
<FunctionLevelLinking>true</FunctionLevelLinking> <FunctionLevelLinking>true</FunctionLevelLinking>
<IntrinsicFunctions>true</IntrinsicFunctions> <IntrinsicFunctions>true</IntrinsicFunctions>
<AdditionalIncludeDirectories>$(DXSDK_DIR)/Include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories> <AdditionalIncludeDirectories>..\..;$(DXSDK_DIR)/Include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
</ClCompile> </ClCompile>
<Link> <Link>
<GenerateDebugInformation>true</GenerateDebugInformation> <GenerateDebugInformation>true</GenerateDebugInformation>
@ -77,9 +77,11 @@
<ItemGroup> <ItemGroup>
<ClInclude Include="..\..\imconfig.h" /> <ClInclude Include="..\..\imconfig.h" />
<ClInclude Include="..\..\imgui.h" /> <ClInclude Include="..\..\imgui.h" />
<ClInclude Include="imgui_impl_dx11.h" />
</ItemGroup> </ItemGroup>
<ItemGroup> <ItemGroup>
<ClCompile Include="..\..\imgui.cpp" /> <ClCompile Include="..\..\imgui.cpp" />
<ClCompile Include="imgui_impl_dx11.cpp" />
<ClCompile Include="main.cpp" /> <ClCompile Include="main.cpp" />
</ItemGroup> </ItemGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" /> <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />

6
examples/directx11_example/directx11_example.vcxproj.filters
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@ -15,6 +15,9 @@
<ClInclude Include="..\..\imgui.h"> <ClInclude Include="..\..\imgui.h">
<Filter>imgui</Filter> <Filter>imgui</Filter>
</ClInclude> </ClInclude>
<ClInclude Include="imgui_impl_dx11.h">
<Filter>sources</Filter>
</ClInclude>
</ItemGroup> </ItemGroup>
<ItemGroup> <ItemGroup>
<ClCompile Include="..\..\imgui.cpp"> <ClCompile Include="..\..\imgui.cpp">
@ -23,5 +26,8 @@
<ClCompile Include="main.cpp"> <ClCompile Include="main.cpp">
<Filter>sources</Filter> <Filter>sources</Filter>
</ClCompile> </ClCompile>
<ClCompile Include="imgui_impl_dx11.cpp">
<Filter>sources</Filter>
</ClCompile>
</ItemGroup> </ItemGroup>
</Project> </Project>

447
examples/directx11_example/imgui_impl_dx11.cpp Normal file
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@ -0,0 +1,447 @@
// ImGui Win32 + DirectX11 binding
// https://github.com/ocornut/imgui
#include <imgui.h>
#include "imgui_impl_dx11.h"
// DirectX
#include <d3d11.h>
#include <d3dcompiler.h>
#define DIRECTINPUT_VERSION 0x0800
#include <dinput.h>
// Data
static INT64 g_Time = 0;
static INT64 g_TicksPerSecond = 0;
static bool g_FontTextureLoaded = false;
static ID3D11Device* g_pd3dDevice = NULL;
static ID3D11DeviceContext* g_pd3dDeviceContext = NULL;
static ID3D11Buffer* g_pVB = NULL;
static ID3D10Blob * g_pVertexShaderBlob = NULL;
static ID3D11VertexShader* g_pVertexShader = NULL;
static ID3D11InputLayout* g_pInputLayout = NULL;
static ID3D11Buffer* g_pVertexConstantBuffer = NULL;
static ID3D10Blob * g_pPixelShaderBlob = NULL;
static ID3D11PixelShader* g_pPixelShader = NULL;
static ID3D11SamplerState* g_pFontSampler = NULL;
static ID3D11BlendState* g_blendState = NULL;
struct CUSTOMVERTEX
{
float pos[2];
float uv[2];
unsigned int col;
};
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)
static void ImGui_ImplDX11_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_count)
{
// Copy and convert all vertices into a single contiguous buffer
D3D11_MAPPED_SUBRESOURCE mappedResource;
if (g_pd3dDeviceContext->Map(g_pVB, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource) != S_OK)
return;
CUSTOMVERTEX* vtx_dst = (CUSTOMVERTEX*)mappedResource.pData;
for (int n = 0; n < cmd_lists_count; n++)
{
const ImDrawList* cmd_list = cmd_lists[n];
const ImDrawVert* vtx_src = &cmd_list->vtx_buffer[0];
for (size_t i = 0; i < cmd_list->vtx_buffer.size(); i++)
{
vtx_dst->pos[0] = vtx_src->pos.x;
vtx_dst->pos[1] = vtx_src->pos.y;
vtx_dst->uv[0] = vtx_src->uv.x;
vtx_dst->uv[1] = vtx_src->uv.y;
vtx_dst->col = vtx_src->col;
vtx_dst++;
vtx_src++;
}
}
g_pd3dDeviceContext->Unmap(g_pVB, 0);
// Setup orthographic projection matrix into our constant buffer
{
D3D11_MAPPED_SUBRESOURCE mappedResource;
if (g_pd3dDeviceContext->Map(g_pVertexConstantBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource) != S_OK)
return;
VERTEX_CONSTANT_BUFFER* pConstantBuffer = (VERTEX_CONSTANT_BUFFER*)mappedResource.pData;
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(&pConstantBuffer->mvp, mvp, sizeof(mvp));
g_pd3dDeviceContext->Unmap(g_pVertexConstantBuffer, 0);
}
// Setup viewport
{
D3D11_VIEWPORT vp;
memset(&vp, 0, sizeof(D3D11_VIEWPORT));
vp.Width = ImGui::GetIO().DisplaySize.x;
vp.Height = ImGui::GetIO().DisplaySize.y;
vp.MinDepth = 0.0f;
vp.MaxDepth = 1.0f;
vp.TopLeftX = 0;
vp.TopLeftY = 0;
g_pd3dDeviceContext->RSSetViewports(1, &vp);
}
// Bind shader and vertex buffers
unsigned int stride = sizeof(CUSTOMVERTEX);
unsigned int offset = 0;
g_pd3dDeviceContext->IASetInputLayout(g_pInputLayout);
g_pd3dDeviceContext->IASetVertexBuffers(0, 1, &g_pVB, &stride, &offset);
g_pd3dDeviceContext->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
g_pd3dDeviceContext->VSSetShader(g_pVertexShader, NULL, 0);
g_pd3dDeviceContext->VSSetConstantBuffers(0, 1, &g_pVertexConstantBuffer);
g_pd3dDeviceContext->PSSetShader(g_pPixelShader, NULL, 0);
g_pd3dDeviceContext->PSSetSamplers(0, 1, &g_pFontSampler);
// Setup render state
const float blendFactor[4] = { 0.f, 0.f, 0.f, 0.f };
g_pd3dDeviceContext->OMSetBlendState(g_blendState, blendFactor, 0xffffffff);
// Render command lists
int vtx_offset = 0;
for (int n = 0; n < cmd_lists_count; n++)
{
const ImDrawList* cmd_list = cmd_lists[n];
for (size_t cmd_i = 0; cmd_i < cmd_list->commands.size(); cmd_i++)
{
const ImDrawCmd* pcmd = &cmd_list->commands[cmd_i];
const D3D11_RECT r = { (LONG)pcmd->clip_rect.x, (LONG)pcmd->clip_rect.y, (LONG)pcmd->clip_rect.z, (LONG)pcmd->clip_rect.w };
g_pd3dDeviceContext->PSSetShaderResources(0, 1, (ID3D11ShaderResourceView**)&pcmd->texture_id);
g_pd3dDeviceContext->RSSetScissorRects(1, &r);
g_pd3dDeviceContext->Draw(pcmd->vtx_count, vtx_offset);
vtx_offset += pcmd->vtx_count;
}
}
// Restore modified state
g_pd3dDeviceContext->IASetInputLayout(NULL);
g_pd3dDeviceContext->PSSetShader(NULL, NULL, 0);
g_pd3dDeviceContext->VSSetShader(NULL, NULL, 0);
}
LRESULT ImGui_ImplDX11_WndProcHandler(HWND 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_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 >= 0 && wParam < 256)
io.KeysDown[wParam] = 1;
return true;
case WM_KEYUP:
if (wParam >= 0 && 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;
}
void ImGui_ImplDX11_InitFontsTexture()
{
ImGuiIO& io = ImGui::GetIO();
// Build
unsigned char* pixels;
int width, height;
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
// Create DX11 texture
D3D11_TEXTURE2D_DESC texDesc;
ZeroMemory(&texDesc, sizeof(texDesc));
texDesc.Width = width;
texDesc.Height = height;
texDesc.MipLevels = 1;
texDesc.ArraySize = 1;
texDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
texDesc.SampleDesc.Count = 1;
texDesc.Usage = D3D11_USAGE_DEFAULT;
texDesc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
texDesc.CPUAccessFlags = 0;
ID3D11Texture2D *pTexture = NULL;
D3D11_SUBRESOURCE_DATA subResource;
subResource.pSysMem = pixels;
subResource.SysMemPitch = texDesc.Width * 4;
subResource.SysMemSlicePitch = 0;
g_pd3dDevice->CreateTexture2D(&texDesc, &subResource, &pTexture);
// Create texture view
D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc;
ZeroMemory(&srvDesc, sizeof(srvDesc));
srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
srvDesc.Texture2D.MipLevels = texDesc.MipLevels;
srvDesc.Texture2D.MostDetailedMip = 0;
ID3D11ShaderResourceView* font_texture_view = NULL;
g_pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, &font_texture_view);
pTexture->Release();
// Store our identifier
io.Fonts->TexID = (void *)font_texture_view;
// Create texture sampler
D3D11_SAMPLER_DESC samplerDesc;
ZeroMemory(&samplerDesc, sizeof(samplerDesc));
samplerDesc.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR;
samplerDesc.AddressU = D3D11_TEXTURE_ADDRESS_WRAP;
samplerDesc.AddressV = D3D11_TEXTURE_ADDRESS_WRAP;
samplerDesc.AddressW = D3D11_TEXTURE_ADDRESS_WRAP;
samplerDesc.MipLODBias = 0.f;
samplerDesc.ComparisonFunc = D3D11_COMPARISON_ALWAYS;
samplerDesc.MinLOD = 0.f;
samplerDesc.MaxLOD = 0.f;
g_pd3dDevice->CreateSamplerState(&samplerDesc, &g_pFontSampler);
}
static bool InitDirect3DState()
{
// Create the vertex shader
{
static const char* vertexShader =
"cbuffer vertexBuffer : register(c0) \
{\
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_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;
if (g_pd3dDevice->CreateVertexShader((DWORD*)g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), NULL, &g_pVertexShader) != S_OK)
return false;
// Create the input layout
D3D11_INPUT_ELEMENT_DESC localLayout[] = {
{ "POSITION", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, (size_t)(&((CUSTOMVERTEX*)0)->pos), D3D11_INPUT_PER_VERTEX_DATA, 0 },
{ "COLOR", 0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, (size_t)(&((CUSTOMVERTEX*)0)->col), D3D11_INPUT_PER_VERTEX_DATA, 0 },
{ "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, (size_t)(&((CUSTOMVERTEX*)0)->uv), D3D11_INPUT_PER_VERTEX_DATA, 0 },
};
if (g_pd3dDevice->CreateInputLayout(localLayout, 3, g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), &g_pInputLayout) != S_OK)
return false;
// Create the constant buffer
{
D3D11_BUFFER_DESC cbDesc;
cbDesc.ByteWidth = sizeof(VERTEX_CONSTANT_BUFFER);
cbDesc.Usage = D3D11_USAGE_DYNAMIC;
cbDesc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
cbDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
cbDesc.MiscFlags = 0;
g_pd3dDevice->CreateBuffer(&cbDesc, 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_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;
if (g_pd3dDevice->CreatePixelShader((DWORD*)g_pPixelShaderBlob->GetBufferPointer(), g_pPixelShaderBlob->GetBufferSize(), NULL, &g_pPixelShader) != S_OK)
return false;
}
// Create the blending setup
{
D3D11_BLEND_DESC desc;
ZeroMemory(&desc, sizeof(desc));
desc.AlphaToCoverageEnable = false;
desc.RenderTarget[0].BlendEnable = true;
desc.RenderTarget[0].SrcBlend = D3D11_BLEND_SRC_ALPHA;
desc.RenderTarget[0].DestBlend = D3D11_BLEND_INV_SRC_ALPHA;
desc.RenderTarget[0].BlendOp = D3D11_BLEND_OP_ADD;
desc.RenderTarget[0].SrcBlendAlpha = D3D11_BLEND_INV_SRC_ALPHA;
desc.RenderTarget[0].DestBlendAlpha = D3D11_BLEND_ZERO;
desc.RenderTarget[0].BlendOpAlpha = D3D11_BLEND_OP_ADD;
desc.RenderTarget[0].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;
g_pd3dDevice->CreateBlendState(&desc, &g_blendState);
}
// Create the vertex buffer
{
D3D11_BUFFER_DESC bufferDesc;
memset(&bufferDesc, 0, sizeof(D3D11_BUFFER_DESC));
bufferDesc.Usage = D3D11_USAGE_DYNAMIC;
bufferDesc.ByteWidth = 100000 * sizeof(CUSTOMVERTEX); // Maybe we should handle that more dynamically?
bufferDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
bufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
bufferDesc.MiscFlags = 0;
if (g_pd3dDevice->CreateBuffer(&bufferDesc, NULL, &g_pVB) < 0)
return false;
}
return true;
}
bool ImGui_ImplDX11_Init(void* hwnd, ID3D11Device* device, ID3D11DeviceContext* device_context)
{
g_pd3dDevice = device;
g_pd3dDeviceContext = device_context;
if (!InitDirect3DState())
{
IM_ASSERT(0);
return false;
}
if (!QueryPerformanceFrequency((LARGE_INTEGER *)&g_TicksPerSecond))
return false;
if (!QueryPerformanceCounter((LARGE_INTEGER *)&g_Time))
return false;
// FIXME: resizing
RECT rect;
GetClientRect((HWND)hwnd, &rect);
int display_w = (int)(rect.right - rect.left);
int display_h = (int)(rect.bottom - rect.top);
ImGuiIO& io = ImGui::GetIO();
io.DisplaySize = ImVec2((float)display_w, (float)display_h); // Display size, in pixels. For clamping windows positions.
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_UP;
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_ImplDX11_RenderDrawLists;
io.ImeWindowHandle = hwnd;
return true;
}
void ImGui_ImplDX11_Shutdown()
{
if (g_pd3dDeviceContext) g_pd3dDeviceContext->ClearState();
if (g_pFontSampler) g_pFontSampler->Release();
if (ID3D11ShaderResourceView* font_texture_view = (ID3D11ShaderResourceView*)ImGui::GetIO().Fonts->TexID)
font_texture_view->Release();
if (g_pVB) g_pVB->Release();
if (g_blendState) g_blendState->Release();
if (g_pPixelShader) g_pPixelShader->Release();
if (g_pPixelShaderBlob) g_pPixelShaderBlob->Release();
if (g_pVertexConstantBuffer) g_pVertexConstantBuffer->Release();
if (g_pInputLayout) g_pInputLayout->Release();
if (g_pVertexShader) g_pVertexShader->Release();
if (g_pVertexShaderBlob) g_pVertexShaderBlob->Release();
ImGui::Shutdown();
}
void ImGui_ImplDX11_NewFrame()
{
if (!g_FontTextureLoaded)
ImGui_ImplDX11_InitFontsTexture();
ImGuiIO& io = ImGui::GetIO();
// 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.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
// Start the frame
ImGui::NewFrame();
}

17
examples/directx11_example/imgui_impl_dx11.h Normal file
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@ -0,0 +1,17 @@
// ImGui Win32 + DirectX11 binding
// https://github.com/ocornut/imgui
struct ID3D11Device;
struct ID3D11DeviceContext;
bool ImGui_ImplDX11_Init(void* hwnd, ID3D11Device* device, ID3D11DeviceContext* device_context);
void ImGui_ImplDX11_InitFontsTexture();
void ImGui_ImplDX11_Shutdown();
void ImGui_ImplDX11_NewFrame();
// 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.
/*
extern LRESULT ImGui_ImplDX11_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
*/

484
examples/directx11_example/main.cpp
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@ -1,147 +1,18 @@
// ImGui - standalone example application for DirectX 11 // ImGui - standalone example application for DirectX 11
// TODO: Allow resizing the application window.
#include <windows.h> #include <imgui.h>
#include "../../imgui.h" #include "imgui_impl_dx11.h"
// DirectX 11
#include <d3d11.h> #include <d3d11.h>
#include <d3dcompiler.h> #include <d3dcompiler.h>
#define DIRECTINPUT_VERSION 0x0800 #define DIRECTINPUT_VERSION 0x0800
#include <dinput.h> #include <dinput.h>
#pragma warning (disable: 4996) // 'This function or variable may be unsafe': strdup // Data
static HWND hWnd;
static ID3D11Device* g_pd3dDevice = NULL; static ID3D11Device* g_pd3dDevice = NULL;
static ID3D11DeviceContext* g_pd3dDeviceImmediateContext = NULL; static ID3D11DeviceContext* g_pd3dDeviceContext = NULL;
static IDXGISwapChain* g_pSwapChain = NULL; static IDXGISwapChain* g_pSwapChain = NULL;
static ID3D11Buffer* g_pVB = NULL; static ID3D11RenderTargetView* g_mainRenderTargetView = NULL;
static ID3D11RenderTargetView* g_mainRenderTargetView;
static ID3D10Blob * g_pVertexShaderBlob = NULL;
static ID3D11VertexShader* g_pVertexShader = NULL;
static ID3D11InputLayout* g_pInputLayout = NULL;
static ID3D11Buffer* g_pVertexConstantBuffer = NULL;
static ID3D10Blob * g_pPixelShaderBlob = NULL;
static ID3D11PixelShader* g_pPixelShader = NULL;
static ID3D11SamplerState* g_pFontSampler = NULL;
static ID3D11BlendState* g_blendState = NULL;
struct CUSTOMVERTEX
{
float pos[2];
float uv[2];
unsigned int col;
};
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)
static void ImImpl_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_count)
{
// Copy and convert all vertices into a single contiguous buffer
D3D11_MAPPED_SUBRESOURCE mappedResource;
if (g_pd3dDeviceImmediateContext->Map(g_pVB, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource) != S_OK)
return;
CUSTOMVERTEX* vtx_dst = (CUSTOMVERTEX*)mappedResource.pData;
for (int n = 0; n < cmd_lists_count; n++)
{
const ImDrawList* cmd_list = cmd_lists[n];
const ImDrawVert* vtx_src = &cmd_list->vtx_buffer[0];
for (size_t i = 0; i < cmd_list->vtx_buffer.size(); i++)
{
vtx_dst->pos[0] = vtx_src->pos.x;
vtx_dst->pos[1] = vtx_src->pos.y;
vtx_dst->uv[0] = vtx_src->uv.x;
vtx_dst->uv[1] = vtx_src->uv.y;
vtx_dst->col = vtx_src->col;
vtx_dst++;
vtx_src++;
}
}
g_pd3dDeviceImmediateContext->Unmap(g_pVB, 0);
// Setup orthographic projection matrix into our constant buffer
{
D3D11_MAPPED_SUBRESOURCE mappedResource;
if (g_pd3dDeviceImmediateContext->Map(g_pVertexConstantBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource) != S_OK)
return;
VERTEX_CONSTANT_BUFFER* pConstantBuffer = (VERTEX_CONSTANT_BUFFER*)mappedResource.pData;
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(&pConstantBuffer->mvp, mvp, sizeof(mvp));
g_pd3dDeviceImmediateContext->Unmap(g_pVertexConstantBuffer, 0);
}
// Setup viewport
{
D3D11_VIEWPORT vp;
memset(&vp, 0, sizeof(D3D11_VIEWPORT));
vp.Width = ImGui::GetIO().DisplaySize.x;
vp.Height = ImGui::GetIO().DisplaySize.y;
vp.MinDepth = 0.0f;
vp.MaxDepth = 1.0f;
vp.TopLeftX = 0;
vp.TopLeftY = 0;
g_pd3dDeviceImmediateContext->RSSetViewports(1, &vp);
}
// Bind shader and vertex buffers
unsigned int stride = sizeof(CUSTOMVERTEX);
unsigned int offset = 0;
g_pd3dDeviceImmediateContext->IASetInputLayout(g_pInputLayout);
g_pd3dDeviceImmediateContext->IASetVertexBuffers(0, 1, &g_pVB, &stride, &offset);
g_pd3dDeviceImmediateContext->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
g_pd3dDeviceImmediateContext->VSSetShader(g_pVertexShader, NULL, 0);
g_pd3dDeviceImmediateContext->VSSetConstantBuffers(0, 1, &g_pVertexConstantBuffer);
g_pd3dDeviceImmediateContext->PSSetShader(g_pPixelShader, NULL, 0);
g_pd3dDeviceImmediateContext->PSSetSamplers(0, 1, &g_pFontSampler);
// Setup render state
const float blendFactor[4] = { 0.f, 0.f, 0.f, 0.f };
g_pd3dDeviceImmediateContext->OMSetBlendState(g_blendState, blendFactor, 0xffffffff);
// Render command lists
int vtx_offset = 0;
for (int n = 0; n < cmd_lists_count; n++)
{
// Render command list
const ImDrawList* cmd_list = cmd_lists[n];
for (size_t cmd_i = 0; cmd_i < cmd_list->commands.size(); cmd_i++)
{
const ImDrawCmd* pcmd = &cmd_list->commands[cmd_i];
const D3D11_RECT r = { (LONG)pcmd->clip_rect.x, (LONG)pcmd->clip_rect.y, (LONG)pcmd->clip_rect.z, (LONG)pcmd->clip_rect.w };
g_pd3dDeviceImmediateContext->PSSetShaderResources(0, 1, (ID3D11ShaderResourceView**)&pcmd->texture_id);
g_pd3dDeviceImmediateContext->RSSetScissorRects(1, &r);
g_pd3dDeviceImmediateContext->Draw(pcmd->vtx_count, vtx_offset);
vtx_offset += pcmd->vtx_count;
}
}
// Restore modified state
g_pd3dDeviceImmediateContext->IASetInputLayout(NULL);
g_pd3dDeviceImmediateContext->PSSetShader(NULL, NULL, 0);
g_pd3dDeviceImmediateContext->VSSetShader(NULL, NULL, 0);
}
HRESULT InitDeviceD3D(HWND hWnd) HRESULT InitDeviceD3D(HWND hWnd)
{ {
@ -170,7 +41,7 @@ HRESULT InitDeviceD3D(HWND hWnd)
#endif #endif
D3D_FEATURE_LEVEL featureLevel; D3D_FEATURE_LEVEL featureLevel;
const D3D_FEATURE_LEVEL featureLevelArray[1] = { D3D_FEATURE_LEVEL_11_0, }; const D3D_FEATURE_LEVEL featureLevelArray[1] = { D3D_FEATURE_LEVEL_11_0, };
if (D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, featureLevelArray, 1, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceImmediateContext) != S_OK) if (D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, featureLevelArray, 1, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceContext) != S_OK)
return E_FAIL; return E_FAIL;
// Setup rasterizer // Setup rasterizer
@ -190,7 +61,7 @@ HRESULT InitDeviceD3D(HWND hWnd)
ID3D11RasterizerState* pRState = NULL; ID3D11RasterizerState* pRState = NULL;
g_pd3dDevice->CreateRasterizerState(&RSDesc, &pRState); g_pd3dDevice->CreateRasterizerState(&RSDesc, &pRState);
g_pd3dDeviceImmediateContext->RSSetState(pRState); g_pd3dDeviceContext->RSSetState(pRState);
pRState->Release(); pRState->Release();
} }
@ -203,356 +74,70 @@ HRESULT InitDeviceD3D(HWND hWnd)
render_target_view_desc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE2D; render_target_view_desc.ViewDimension = D3D11_RTV_DIMENSION_TEXTURE2D;
g_pSwapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), (LPVOID*)&pBackBuffer); g_pSwapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), (LPVOID*)&pBackBuffer);
g_pd3dDevice->CreateRenderTargetView(pBackBuffer, &render_target_view_desc, &g_mainRenderTargetView); g_pd3dDevice->CreateRenderTargetView(pBackBuffer, &render_target_view_desc, &g_mainRenderTargetView);
g_pd3dDeviceImmediateContext->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL); g_pd3dDeviceContext->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL);
pBackBuffer->Release(); pBackBuffer->Release();
} }
// Create the vertex shader
{
static const char* vertexShader =
"cbuffer vertexBuffer : register(c0) \
{\
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_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 E_FAIL;
if (g_pd3dDevice->CreateVertexShader((DWORD*)g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), NULL, &g_pVertexShader) != S_OK)
return E_FAIL;
// Create the input layout
D3D11_INPUT_ELEMENT_DESC localLayout[] = {
{ "POSITION", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, (size_t)(&((CUSTOMVERTEX*)0)->pos), D3D11_INPUT_PER_VERTEX_DATA, 0 },
{ "COLOR", 0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, (size_t)(&((CUSTOMVERTEX*)0)->col), D3D11_INPUT_PER_VERTEX_DATA, 0 },
{ "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, (size_t)(&((CUSTOMVERTEX*)0)->uv), D3D11_INPUT_PER_VERTEX_DATA, 0 },
};
if (g_pd3dDevice->CreateInputLayout(localLayout, 3, g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), &g_pInputLayout) != S_OK)
return E_FAIL;
// Create the constant buffer
{
D3D11_BUFFER_DESC cbDesc;
cbDesc.ByteWidth = sizeof(VERTEX_CONSTANT_BUFFER);
cbDesc.Usage = D3D11_USAGE_DYNAMIC;
cbDesc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
cbDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
cbDesc.MiscFlags = 0;
g_pd3dDevice->CreateBuffer(&cbDesc, 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_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 E_FAIL;
if (g_pd3dDevice->CreatePixelShader((DWORD*)g_pPixelShaderBlob->GetBufferPointer(), g_pPixelShaderBlob->GetBufferSize(), NULL, &g_pPixelShader) != S_OK)
return E_FAIL;
}
// Create the blending setup
{
D3D11_BLEND_DESC desc;
ZeroMemory(&desc, sizeof(desc));
desc.AlphaToCoverageEnable = false;
desc.RenderTarget[0].BlendEnable = true;
desc.RenderTarget[0].SrcBlend = D3D11_BLEND_SRC_ALPHA;
desc.RenderTarget[0].DestBlend = D3D11_BLEND_INV_SRC_ALPHA;
desc.RenderTarget[0].BlendOp = D3D11_BLEND_OP_ADD;
desc.RenderTarget[0].SrcBlendAlpha = D3D11_BLEND_INV_SRC_ALPHA;
desc.RenderTarget[0].DestBlendAlpha = D3D11_BLEND_ZERO;
desc.RenderTarget[0].BlendOpAlpha = D3D11_BLEND_OP_ADD;
desc.RenderTarget[0].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;
g_pd3dDevice->CreateBlendState(&desc, &g_blendState);
}
return S_OK; return S_OK;
} }
void CleanupDevice() void CleanupDeviceD3D()
{ {
if (g_pd3dDeviceImmediateContext) g_pd3dDeviceImmediateContext->ClearState();
// InitImGui
if (g_pFontSampler) g_pFontSampler->Release();
if (ID3D11ShaderResourceView* font_texture_view = (ID3D11ShaderResourceView*)ImGui::GetIO().Fonts->TexID)
font_texture_view->Release();
if (g_pVB) g_pVB->Release();
// InitDeviceD3D
if (g_blendState) g_blendState->Release();
if (g_pPixelShader) g_pPixelShader->Release();
if (g_pPixelShaderBlob) g_pPixelShaderBlob->Release();
if (g_pVertexConstantBuffer) g_pVertexConstantBuffer->Release();
if (g_pInputLayout) g_pInputLayout->Release();
if (g_pVertexShader) g_pVertexShader->Release();
if (g_pVertexShaderBlob) g_pVertexShaderBlob->Release();
if (g_mainRenderTargetView) g_mainRenderTargetView->Release(); if (g_mainRenderTargetView) g_mainRenderTargetView->Release();
if (g_pSwapChain) g_pSwapChain->Release(); if (g_pSwapChain) g_pSwapChain->Release();
if (g_pd3dDeviceImmediateContext) g_pd3dDeviceImmediateContext->Release(); if (g_pd3dDeviceContext) g_pd3dDeviceContext->Release();
if (g_pd3dDevice) g_pd3dDevice->Release(); if (g_pd3dDevice) g_pd3dDevice->Release();
} }
extern LRESULT ImGui_ImplDX11_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{ {
ImGuiIO& io = ImGui::GetIO(); if (ImGui_ImplDX11_WndProcHandler(hWnd, msg, wParam, lParam))
return true;
switch (msg) 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_MOUSEWHEEL:
io.MouseWheel += GET_WHEEL_DELTA_WPARAM(wParam) > 0 ? +1.0f : -1.0f;
return true;
case WM_MOUSEMOVE:
// Mouse position, in pixels (set to -1,-1 if no mouse / on another screen, etc.)
io.MousePos.x = (signed short)(lParam);
io.MousePos.y = (signed short)(lParam >> 16);
return true;
case WM_KEYDOWN:
if (wParam >= 0 && wParam < 256)
io.KeysDown[wParam] = 1;
return true;
case WM_KEYUP:
if (wParam >= 0 && 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;
case WM_DESTROY: case WM_DESTROY:
CleanupDevice();
PostQuitMessage(0); PostQuitMessage(0);
return 0; return 0;
} }
return DefWindowProc(hWnd, msg, wParam, lParam); return DefWindowProc(hWnd, msg, wParam, lParam);
} }
void LoadFontsTexture()
{
// Load one or more font
ImGuiIO& io = ImGui::GetIO();
//ImFont* my_font1 = io.Fonts->AddFontDefault();
//ImFont* my_font2 = io.Fonts->AddFontFromFileTTF("extra_fonts/Karla-Regular.ttf", 15.0f);
//ImFont* my_font3 = io.Fonts->AddFontFromFileTTF("extra_fonts/ProggyClean.ttf", 13.0f); my_font3->DisplayOffset.y += 1;
//ImFont* my_font4 = io.Fonts->AddFontFromFileTTF("extra_fonts/ProggyTiny.ttf", 10.0f); my_font4->DisplayOffset.y += 1;
//ImFont* my_font5 = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, io.Fonts->GetGlyphRangesJapanese());
// Build
unsigned char* pixels;
int width, height;
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
// Create texture
D3D11_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 = D3D11_USAGE_DEFAULT;
desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
desc.CPUAccessFlags = 0;
ID3D11Texture2D *pTexture = NULL;
D3D11_SUBRESOURCE_DATA subResource;
subResource.pSysMem = pixels;
subResource.SysMemPitch = desc.Width * 4;
subResource.SysMemSlicePitch = 0;
g_pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture);
// Create texture view
D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc;
ZeroMemory(&srvDesc, sizeof(srvDesc));
srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
srvDesc.Texture2D.MipLevels = desc.MipLevels;
srvDesc.Texture2D.MostDetailedMip = 0;
ID3D11ShaderResourceView* font_texture_view = NULL;
g_pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, &font_texture_view);
pTexture->Release();
// Store our identifier
io.Fonts->TexID = (void *)font_texture_view;
}
void InitImGui()
{
RECT rect;
GetClientRect(hWnd, &rect);
int display_w = (int)(rect.right - rect.left);
int display_h = (int)(rect.bottom - rect.top);
ImGuiIO& io = ImGui::GetIO();
io.DisplaySize = ImVec2((float)display_w, (float)display_h); // Display size, in pixels. For clamping windows positions.
io.DeltaTime = 1.0f/60.0f; // Time elapsed since last frame, in seconds (in this sample app we'll override this every frame because our time step is variable)
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_UP;
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 = ImImpl_RenderDrawLists;
io.ImeWindowHandle = hWnd;
// Create the vertex buffer
{
D3D11_BUFFER_DESC bufferDesc;
memset(&bufferDesc, 0, sizeof(D3D11_BUFFER_DESC));
bufferDesc.Usage = D3D11_USAGE_DYNAMIC;
bufferDesc.ByteWidth = 100000 * sizeof(CUSTOMVERTEX); // Maybe we should handle that more dynamically?
bufferDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
bufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
bufferDesc.MiscFlags = 0;
if (g_pd3dDevice->CreateBuffer(&bufferDesc, NULL, &g_pVB) < 0)
{
IM_ASSERT(0);
return;
}
}
// Load fonts
LoadFontsTexture();
// Create texture sampler
{
D3D11_SAMPLER_DESC desc;
ZeroMemory(&desc, sizeof(desc));
desc.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR;
desc.AddressU = D3D11_TEXTURE_ADDRESS_WRAP;
desc.AddressV = D3D11_TEXTURE_ADDRESS_WRAP;
desc.AddressW = D3D11_TEXTURE_ADDRESS_WRAP;
desc.MipLODBias = 0.f;
desc.ComparisonFunc = D3D11_COMPARISON_ALWAYS;
desc.MinLOD = 0.f;
desc.MaxLOD = 0.f;
g_pd3dDevice->CreateSamplerState(&desc, &g_pFontSampler);
}
}
INT64 ticks_per_second = 0;
INT64 last_time = 0;
void UpdateImGui()
{
ImGuiIO& io = ImGui::GetIO();
// Setup time step
INT64 current_time;
QueryPerformanceCounter((LARGE_INTEGER *)&current_time);
io.DeltaTime = (float)(current_time - last_time) / ticks_per_second;
last_time = current_time;
// Read keyboard modifiers inputs
io.KeyCtrl = (GetKeyState(VK_CONTROL) & 0x8000) != 0;
io.KeyShift = (GetKeyState(VK_SHIFT) & 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
// Start the frame
ImGui::NewFrame();
}
int main(int argc, char** argv) int main(int argc, char** argv)
{ {
// Register the window class // Create application window
WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, LoadCursor(NULL, IDC_ARROW), NULL, NULL, L"ImGui Example", NULL }; WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, LoadCursor(NULL, IDC_ARROW), NULL, NULL, L"ImGui Example", NULL };
RegisterClassEx(&wc); RegisterClassEx(&wc);
HWND hwnd = CreateWindow(L"ImGui Example", L"ImGui DirectX11 Example", WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
// Create the application's window
hWnd = CreateWindow(L"ImGui Example", L"ImGui DirectX11 Example", WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
if (!QueryPerformanceFrequency((LARGE_INTEGER *)&ticks_per_second))
return 1;
if (!QueryPerformanceCounter((LARGE_INTEGER *)&last_time))
return 1;
// Initialize Direct3D // Initialize Direct3D
if (InitDeviceD3D(hWnd) < 0) if (InitDeviceD3D(hwnd) < 0)
{ {
CleanupDevice(); CleanupDeviceD3D();
UnregisterClass(L"ImGui Example", wc.hInstance); UnregisterClass(L"ImGui Example", wc.hInstance);
return 1; return 1;
} }
// Show the window // Show the window
ShowWindow(hWnd, SW_SHOWDEFAULT); ShowWindow(hwnd, SW_SHOWDEFAULT);
UpdateWindow(hWnd); UpdateWindow(hwnd);
InitImGui(); // Setup ImGui binding
ImGui_ImplDX11_Init(hwnd, g_pd3dDevice, g_pd3dDeviceContext);
//ImGuiIO& io = ImGui::GetIO();
//ImFont* my_font1 = io.Fonts->AddFontDefault();
//ImFont* my_font2 = io.Fonts->AddFontFromFileTTF("extra_fonts/Karla-Regular.ttf", 15.0f);
//ImFont* my_font3 = io.Fonts->AddFontFromFileTTF("extra_fonts/ProggyClean.ttf", 13.0f); my_font3->DisplayOffset.y += 1;
//ImFont* my_font4 = io.Fonts->AddFontFromFileTTF("extra_fonts/ProggyTiny.ttf", 10.0f); my_font4->DisplayOffset.y += 1;
//ImFont* my_font5 = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, io.Fonts->GetGlyphRangesJapanese());
ImGui_ImplDX11_InitFontsTexture();
bool show_test_window = true; bool show_test_window = true;
bool show_another_window = false; bool show_another_window = false;
ImVec4 clear_col = ImColor(114, 144, 154); ImVec4 clear_col = ImColor(114, 144, 154);
// Enter the message loop // Main loop
MSG msg; MSG msg;
ZeroMemory(&msg, sizeof(msg)); ZeroMemory(&msg, sizeof(msg));
while (msg.message != WM_QUIT) while (msg.message != WM_QUIT)
@ -563,7 +148,7 @@ int main(int argc, char** argv)
DispatchMessage(&msg); DispatchMessage(&msg);
continue; continue;
} }
UpdateImGui(); ImGui_ImplDX11_NewFrame();
// 1. Show a simple window // 1. Show a simple window
// Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug" // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug"
@ -593,12 +178,13 @@ int main(int argc, char** argv)
} }
// Rendering // Rendering
g_pd3dDeviceImmediateContext->ClearRenderTargetView(g_mainRenderTargetView, (float*)&clear_col); g_pd3dDeviceContext->ClearRenderTargetView(g_mainRenderTargetView, (float*)&clear_col);
ImGui::Render(); ImGui::Render();
g_pSwapChain->Present(0, 0); g_pSwapChain->Present(0, 0);
} }
ImGui::Shutdown(); ImGui_ImplDX11_Shutdown();
CleanupDeviceD3D();
UnregisterClass(L"ImGui Example", wc.hInstance); UnregisterClass(L"ImGui Example", wc.hInstance);
return 0; return 0;

3
examples/directx9_example/imgui_impl_dx9.cpp
View File

@ -90,7 +90,6 @@ static void ImGui_ImplDX9_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_
int vtx_offset = 0; int vtx_offset = 0;
for (int n = 0; n < cmd_lists_count; n++) for (int n = 0; n < cmd_lists_count; n++)
{ {
// Render command list
const ImDrawList* cmd_list = cmd_lists[n]; const ImDrawList* cmd_list = cmd_lists[n];
for (size_t cmd_i = 0; cmd_i < cmd_list->commands.size(); cmd_i++) for (size_t cmd_i = 0; cmd_i < cmd_list->commands.size(); cmd_i++)
{ {
@ -184,7 +183,7 @@ bool ImGui_ImplDX9_Init(void* hwnd, IDirect3DDevice9* device)
if (!QueryPerformanceCounter((LARGE_INTEGER *)&g_Time)) if (!QueryPerformanceCounter((LARGE_INTEGER *)&g_Time))
return false; return false;
// FIXME // FIXME: resizing
RECT rect; RECT rect;
GetClientRect((HWND)hwnd, &rect); GetClientRect((HWND)hwnd, &rect);
int display_w = (int)(rect.right - rect.left); int display_w = (int)(rect.right - rect.left);

8
examples/directx9_example/main.cpp
View File

@ -1,7 +1,6 @@
// ImGui - standalone example application for DirectX 9 // ImGui - standalone example application for DirectX 9
// TODO: Allow resizing the application window. // TODO: Allow resizing the application window.
#include <windows.h>
#include <imgui.h> #include <imgui.h>
#include "imgui_impl_dx9.h" #include "imgui_impl_dx9.h"
#include <d3dx9.h> #include <d3dx9.h>
@ -25,11 +24,9 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
int main(int argc, char** argv) int main(int argc, char** argv)
{ {
// Register the window class // Create application window
WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, LoadCursor(NULL, IDC_ARROW), NULL, NULL, L"ImGui Example", NULL }; WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, LoadCursor(NULL, IDC_ARROW), NULL, NULL, L"ImGui Example", NULL };
RegisterClassEx(&wc); RegisterClassEx(&wc);
// Create the application's window
HWND hwnd = CreateWindow(L"ImGui Example", L"ImGui DirectX9 Example", WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL); HWND hwnd = CreateWindow(L"ImGui Example", L"ImGui DirectX9 Example", WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
// Initialize Direct3D // Initialize Direct3D
@ -60,7 +57,7 @@ int main(int argc, char** argv)
ShowWindow(hwnd, SW_SHOWDEFAULT); ShowWindow(hwnd, SW_SHOWDEFAULT);
UpdateWindow(hwnd); UpdateWindow(hwnd);
// ImGui // Setup ImGui binding
ImGui_ImplDX9_Init(hwnd, pd3dDevice); ImGui_ImplDX9_Init(hwnd, pd3dDevice);
//ImGuiIO& io = ImGui::GetIO(); //ImGuiIO& io = ImGui::GetIO();
//ImFont* my_font1 = io.Fonts->AddFontDefault(); //ImFont* my_font1 = io.Fonts->AddFontDefault();
@ -129,7 +126,6 @@ int main(int argc, char** argv)
} }
ImGui_ImplDX9_Shutdown(); ImGui_ImplDX9_Shutdown();
if (pd3dDevice) pd3dDevice->Release(); if (pd3dDevice) pd3dDevice->Release();
if (pD3D) pD3D->Release(); if (pD3D) pD3D->Release();
UnregisterClass(L"ImGui Example", wc.hInstance); UnregisterClass(L"ImGui Example", wc.hInstance);