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我最近在YouTube上關於如何將DirectX安裝到Win32中的教程。當我跑之前，我有一個白色的窗戶。當我在安裝DirectX後運行它時，我試圖用DirectX改變顏色，但當它應該是青色時，我仍然有一個白色窗口。DirectX SDK安裝顏色變化
#include <Windows.h>
#include <iostream>
#include "wtypes.h"
#include "wtypes.h"
#include <d3d11.h>
#include <d3dx11.h>
#include <DxErr.h>
void GetDesktopResolution(int& horizontal, int& vertical)
{
RECT desktop;
const HWND hDesktop = GetDesktopWindow();
GetWindowRect(hDesktop, &desktop);
horizontal = desktop.right;
vertical = desktop.bottom;
}
using namespace std;
HWND windowHandle;
LRESULT CALLBACK WndProc(HWND hwnd, UINT fMsg, WPARAM wParam, LPARAM lParam)
{
switch (fMsg)
{
case WM_CLOSE:
DestroyWindow(hwnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
case WM_CHAR:
{
if (wParam == VK_ESCAPE)
SendMessage(hwnd, WM_CLOSE, 0, 0);
return 0;
}
default:
return DefWindowProc(hwnd, fMsg, wParam, lParam);
}
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE prevIstance, PSTR cmdLine, int showCmd)
{
int horizontal = 0;
int vertical = 0;
bool success;
int hres = 0;
int vres = 0;
GetDesktopResolution(horizontal, vertical);
if (success = GetDesktopResolution)
{
hres = horizontal - 800;
vres = vertical - 600;
}
const int result = MessageBoxA(0, "Would you like to play in \nFull-Screen Mode?", "When the Sun Sets", MB_ICONEXCLAMATION | MB_YESNOCANCEL);
switch (result)
{
case IDYES:
if (result == IDYES)
{
// FIRST WINDOW
WNDCLASSEX fGame;
fGame.cbSize = sizeof(WNDCLASSEX);
fGame.cbClsExtra = 0;
fGame.cbWndExtra = 0;
fGame.hIconSm = 0;
fGame.hInstance = hInstance;
fGame.lpfnWndProc = WndProc;
fGame.style = CS_HREDRAW | CS_VREDRAW;
fGame.lpszClassName = L"WTSS1";
fGame.lpszMenuName = 0;
fGame.hCursor = LoadCursor(0, IDC_ARROW);
fGame.hIcon = LoadIcon(0, IDI_APPLICATION);
fGame.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
RegisterClassEx(&fGame);
windowHandle = CreateWindowEx(WS_MAXIMIZEBOX, L"WTSS1", L"When the Sun Sets", WS_OVERLAPPEDWINDOW | WS_VISIBLE, 0, 0, 800 + hres, 600 + vres, 0, 0, hInstance, 0);
SetWindowLong(windowHandle, GWL_STYLE, 0);
if (windowHandle == 0)
{
MessageBoxA(0, "Error: The window has been configured incorrectly.", "When the Sun Sets", 0);
return -1;
}
ShowWindow(windowHandle, showCmd);
UpdateWindow(windowHandle);
HRESULT hResult = S_OK;
ID3D11Device* m_pD3D11Device = 0;
IDXGISwapChain* m_pSwapChain = 0;
ID3D11DeviceContext* m_pD3D11Context = 0;
D3D_FEATURE_LEVEL FeatureLevelsSupported;
D3D_FEATURE_LEVEL FeatureLevelsRequested[] =
{
D3D_FEATURE_LEVEL_11_0,
D3D_FEATURE_LEVEL_10_1,
D3D_FEATURE_LEVEL_10_0,
D3D_FEATURE_LEVEL_9_3,
D3D_FEATURE_LEVEL_9_2,
D3D_FEATURE_LEVEL_9_1,
};
RECT dimensions;
GetClientRect(windowHandle, &dimensions);
LONG width = dimensions.right - dimensions.left;
LONG height = dimensions.bottom - dimensions.top;
DXGI_SWAP_CHAIN_DESC sd;
ZeroMemory(&sd, sizeof(sd));
sd.BufferCount = 1;
sd.BufferDesc.Width = static_cast<unsigned int>(width);
sd.BufferDesc.Height = static_cast<unsigned int>(height);
sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
sd.BufferDesc.RefreshRate.Numerator = 60;
sd.BufferDesc.RefreshRate.Denominator = 1;
sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
sd.OutputWindow = windowHandle;
sd.SampleDesc.Count = 1;
sd.SampleDesc.Quality = 0;
sd.Windowed = TRUE;
hResult = D3D11CreateDeviceAndSwapChain(NULL,
D3D_DRIVER_TYPE_HARDWARE,
NULL,
0,
FeatureLevelsRequested,
3,
D3D11_SDK_VERSION,
&sd,
&m_pSwapChain,
&m_pD3D11Device,
&FeatureLevelsSupported,
&m_pD3D11Context);
if (FAILED(hResult))
{
MessageBoxA(windowHandle, "Error: The Direct3D device has been configured incorrectly.", "When the Sun Sets", 0);
return -1;
}
ID3D11RenderTargetView* m_pBackBufferTarget = 0;
ID3D11Texture2D* backBufferTexture;
hResult = m_pSwapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), (LPVOID*)&backBufferTexture);
if (FAILED(hResult))
{
MessageBoxA(windowHandle, "Error: The Direct3D device has been configured incorrectly.", "When the Sun Sets", 0);
return -1;
}
hResult = m_pD3D11Device->CreateRenderTargetView(backBufferTexture, 0, &m_pBackBufferTarget);
if (backBufferTexture)
{
backBufferTexture->Release();
backBufferTexture = 0;
}
if (FAILED(hResult))
{
MessageBoxA(windowHandle, "Error: The Direct3D device has been configured incorrectly.", "When the Sun Sets", 0);
return -1;
}
m_pD3D11Context->OMSetRenderTargets(1, &m_pBackBufferTarget, 0);
D3D11_VIEWPORT vp;
vp.Width = static_cast<float>(width);
vp.Height = static_cast<float>(height);
vp.MinDepth = 0.0f;
vp.MaxDepth = 1.0f;
vp.TopLeftX = 0;
vp.TopLeftY = 0;
m_pD3D11Context->RSSetViewports(1, &vp);
if (m_pD3D11Context == 0)
{
MessageBoxA(windowHandle, "Error: The Direct3D device has been configured incorrectly.", "When the Sun Sets", 0);
return -1;
}
float clearColor[4] = { 0.0f, 135/225.0f, 189/225.0f, 1.0f };
m_pD3D11Context->ClearRenderTargetView(m_pBackBufferTarget, clearColor);
m_pSwapChain->Present(0, 0);
MSG fMsg;
SecureZeroMemory(&fMsg, sizeof(MSG));
int fReturnValue = 0;
while ((fReturnValue = GetMessage(&fMsg, 0, 0, 0)) != 0)
{
if (fReturnValue == -1)
{
MessageBoxA(windowHandle, "Error: The window has been configured incorrectly.", "When the Sun Sets", 0);
}
TranslateMessage(&fMsg);
DispatchMessage(&fMsg);
}
if (m_pBackBufferTarget)
{
m_pBackBufferTarget->Release();
m_pBackBufferTarget = 0;
}
if (m_pSwapChain)
{
m_pSwapChain->Release();
m_pSwapChain = 0;
}
if (m_pD3D11Context)
{
m_pD3D11Context->Release();
m_pD3D11Context = 0;
}
if (m_pD3D11Device)
{
m_pD3D11Device->Release();
m_pD3D11Device = 0;
}
}
break;
它明確規定：
float clearColor[4] = { 0.0f, 135/225.0f, 189/225.0f, 1.0f };
m_pD3D11Context->ClearRenderTargetView(m_pBackBufferTarget, clearColor);
m_pSwapChain->Present(0, 0);
應該給一個青色的窗口，應該不是嗎？
在此先感謝！