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Examples: DirectX9 example application handle window resizing.

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This commit is contained in:
ocornut
2015-03-09 14:13:29 +00:00
parent 25765e4bfc
commit 866fa95aaa
4 changed files with 76 additions and 41 deletions
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59
examples/directx9_example/main.cpp
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@ -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);