github
/
imgui
mirror of https://github.com/ocornut/imgui.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Browse Source

Examples: DirectX9 example application handle window resizing.

pull/159/head
ocornut 10 years ago
parent
25765e4bfc
commit
866fa95aaa
4 changed files with 76 additions and 41 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 16
      examples/directx11_example/imgui_impl_dx11.cpp
  2. 38
      examples/directx9_example/imgui_impl_dx9.cpp
  3. 4
      examples/directx9_example/imgui_impl_dx9.h
  4. 59
      examples/directx9_example/main.cpp

16
examples/directx11_example/imgui_impl_dx11.cpp
View File

@ -15,6 +15,7 @@ static INT64 g_Time = 0;
static INT64 g_TicksPerSecond = 0;
static bool g_FontTextureLoaded = false;
static HWND g_hWnd = 0;
static ID3D11Device* g_pd3dDevice = NULL;
static ID3D11DeviceContext* g_pd3dDeviceContext = NULL;
static ID3D11Buffer* g_pVB = NULL;
@ -355,6 +356,7 @@ static bool InitDirect3DState()
bool ImGui_ImplDX11_Init(void* hwnd, ID3D11Device* device, ID3D11DeviceContext* device_context)
{
g_hWnd = (HWND)hwnd;
g_pd3dDevice = device;
g_pd3dDeviceContext = device_context;
@ -369,14 +371,7 @@ bool ImGui_ImplDX11_Init(void* hwnd, ID3D11Device* device, ID3D11DeviceContex
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;
@ -396,7 +391,7 @@ bool ImGui_ImplDX11_Init(void* hwnd, ID3D11Device* device, ID3D11DeviceContex
io.KeyMap[ImGuiKey_Z] = 'Z';
io.RenderDrawListsFn = ImGui_ImplDX11_RenderDrawLists;
io.ImeWindowHandle = hwnd;
io.ImeWindowHandle = g_hWnd;
return true;
}
@ -428,6 +423,11 @@ void ImGui_ImplDX11_NewFrame()
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);

38
examples/directx9_example/imgui_impl_dx9.cpp
View File

@ -10,6 +10,7 @@
#include <dinput.h>
// Data
static HWND g_hWnd = 0;
static INT64 g_Time = 0;
static INT64 g_TicksPerSecond = 0;
static bool g_FontTextureLoaded = false;
@ -177,20 +178,15 @@ void ImGui_ImplDX9_InitFontsTexture()
bool ImGui_ImplDX9_Init(void* hwnd, IDirect3DDevice9* device)
{
g_hWnd = (HWND)hwnd;
g_pd3dDevice = device;
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;
@ -210,17 +206,18 @@ bool ImGui_ImplDX9_Init(void* hwnd, IDirect3DDevice9* device)
io.KeyMap[ImGuiKey_Z] = 'Z';
io.RenderDrawListsFn = ImGui_ImplDX9_RenderDrawLists;
io.ImeWindowHandle = hwnd;
io.ImeWindowHandle = g_hWnd;
// Create the vertex buffer
if (g_pd3dDevice->CreateVertexBuffer(10000 * sizeof(CUSTOMVERTEX), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &g_pVB, NULL) < 0)
return false;
return true;
}
void ImGui_ImplDX9_Shutdown()
void ImGui_ImplDX9_InvalidateDeviceObjects()
{
if (!g_pd3dDevice)
return;
if (g_pVB)
{
g_pVB->Release();
@ -231,8 +228,24 @@ void ImGui_ImplDX9_Shutdown()
tex->Release();
ImGui::GetIO().Fonts->TexID = 0;
}
}
void ImGui_ImplDX9_CreateDeviceObjects()
{
if (!g_pd3dDevice)
return;
if (g_pd3dDevice->CreateVertexBuffer(10000 * sizeof(CUSTOMVERTEX), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &g_pVB, NULL) < 0)
return;
ImGui_ImplDX9_InitFontsTexture();
}
void ImGui_ImplDX9_Shutdown()
{
ImGui_ImplDX9_InvalidateDeviceObjects();
ImGui::Shutdown();
g_pd3dDevice = NULL;
g_hWnd = 0;
}
void ImGui_ImplDX9_NewFrame()
@ -242,6 +255,11 @@ void ImGui_ImplDX9_NewFrame()
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);

4
examples/directx9_example/imgui_impl_dx9.h
View File

@ -8,6 +8,10 @@ void ImGui_ImplDX9_InitFontsTexture();
void ImGui_ImplDX9_Shutdown();
void ImGui_ImplDX9_NewFrame();
// Use if you want to reset your rendering device without losing ImGui state.
void ImGui_ImplDX9_InvalidateDeviceObjects();
void ImGui_ImplDX9_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.

59
examples/directx9_example/main.cpp
View File

@ -1,5 +1,4 @@
// ImGui - standalone example application for DirectX 9
// TODO: Allow resizing the application window.
#include <imgui.h>
#include "imgui_impl_dx9.h"
@ -7,6 +6,10 @@
#define DIRECTINPUT_VERSION 0x0800
#include <dinput.h>
// Data
static LPDIRECT3DDEVICE9 g_pd3dDevice = NULL;
static D3DPRESENT_PARAMETERS g_d3dpp;
extern LRESULT ImGui_ImplDX9_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
@ -15,6 +18,18 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
switch (msg)
{
case WM_SIZE:
if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
{
ImGui_ImplDX9_InvalidateDeviceObjects();
g_d3dpp.BackBufferWidth = LOWORD(lParam);
g_d3dpp.BackBufferHeight = HIWORD(lParam);
HRESULT hr = g_pd3dDevice->Reset(&g_d3dpp);
if (hr == D3DERR_INVALIDCALL)
IM_ASSERT(0);
ImGui_ImplDX9_CreateDeviceObjects();
}
return 0;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
@ -36,29 +51,24 @@ int main(int argc, char** argv)
UnregisterClass(L"ImGui Example", wc.hInstance);
return 0;
}
D3DPRESENT_PARAMETERS d3dpp;
ZeroMemory(&d3dpp, sizeof(d3dpp));
d3dpp.Windowed = TRUE;
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;
d3dpp.EnableAutoDepthStencil = TRUE;
d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
ZeroMemory(&g_d3dpp, sizeof(g_d3dpp));
g_d3dpp.Windowed = TRUE;
g_d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
g_d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;
g_d3dpp.EnableAutoDepthStencil = TRUE;
g_d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
g_d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
// Create the D3DDevice
LPDIRECT3DDEVICE9 pd3dDevice = NULL;
if (pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hwnd, D3DCREATE_HARDWARE_VERTEXPROCESSING, &d3dpp, &pd3dDevice) < 0)
if (pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hwnd, D3DCREATE_HARDWARE_VERTEXPROCESSING, &g_d3dpp, &g_pd3dDevice) < 0)
{
pD3D->Release();
UnregisterClass(L"ImGui Example", wc.hInstance);
return 0;
}
ShowWindow(hwnd, SW_SHOWDEFAULT);
UpdateWindow(hwnd);
// Setup ImGui binding
ImGui_ImplDX9_Init(hwnd, pd3dDevice);
ImGui_ImplDX9_Init(hwnd, g_pd3dDevice);
//ImGuiIO& io = ImGui::GetIO();
//ImFont* my_font1 = io.Fonts->AddFontDefault();
//ImFont* my_font2 = io.Fonts->AddFontFromFileTTF("extra_fonts/Karla-Regular.ttf", 15.0f);
@ -67,6 +77,9 @@ int main(int argc, char** argv)
//ImFont* my_font5 = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, io.Fonts->GetGlyphRangesJapanese());
ImGui_ImplDX9_InitFontsTexture();
ShowWindow(hwnd, SW_SHOWDEFAULT);
UpdateWindow(hwnd);
bool show_test_window = true;
bool show_another_window = false;
ImVec4 clear_col = ImColor(114, 144, 154);
@ -112,21 +125,21 @@ int main(int argc, char** argv)
}
// Rendering
pd3dDevice->SetRenderState(D3DRS_ZENABLE, false);
pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, false);
pd3dDevice->SetRenderState(D3DRS_SCISSORTESTENABLE, false);
g_pd3dDevice->SetRenderState(D3DRS_ZENABLE, false);
g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, false);
g_pd3dDevice->SetRenderState(D3DRS_SCISSORTESTENABLE, false);
D3DCOLOR clear_col_dx = D3DCOLOR_RGBA((int)(clear_col.x*255.0f), (int)(clear_col.y*255.0f), (int)(clear_col.z*255.0f), (int)(clear_col.w*255.0f));
pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, clear_col_dx, 1.0f, 0);
if (pd3dDevice->BeginScene() >= 0)
g_pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, clear_col_dx, 1.0f, 0);
if (g_pd3dDevice->BeginScene() >= 0)
{
ImGui::Render();
pd3dDevice->EndScene();
g_pd3dDevice->EndScene();
}
pd3dDevice->Present(NULL, NULL, NULL, NULL);
g_pd3dDevice->Present(NULL, NULL, NULL, NULL);
}
ImGui_ImplDX9_Shutdown();
if (pd3dDevice) pd3dDevice->Release();
if (g_pd3dDevice) g_pd3dDevice->Release();
if (pD3D) pD3D->Release();
UnregisterClass(L"ImGui Example", wc.hInstance);

Write Preview
Loading…
Cancel
Save