DirectX 基础学习系列6 字体

ゝ一纸荒年。 2022-03-31 03:23 223阅读 0赞

DIRECTX9自带ID3DXFONT类

内部调用GDI的接口，效率一般，但能够处理一些复杂的字体

HRESULT D3DXCreateFontIndirect( LPDIRECT3DDEVICE9 *pDevice*, CONST D3DXFONT\_DESC \* *pDesc*, LPD3DXFONT \* *ppFont*);

typedef struct D3DXFONT\_DESC \{

INT Height;
        UINT Width;
        UINT Weight;
        UINT MipLevels;
        BOOL Italic;
        BYTE CharSet;
        BYTE OutputPrecision;
        BYTE Quality;
        BYTE PitchAndFamily;
        TCHAR FaceName[LF_FACESIZE];
    } D3DXFONT_DESC, *LPD3DXFONT_DESC;

2绘制

INT ID3DXFont::DrawText(LPD3DXSPRITE pSprite,  LPCTSTR pString,  INT Count,

LPRECT pRect,  DWORD Format,  
    D3DCOLOR Color);

实例：

D3DXFONT_DESC lf;
        ZeroMemory(&lf, sizeof(D3DXFONT_DESC));
    
        lf.Height         = 25;    // in logical units
        lf.Width          = 12;    // in logical units 
        lf.Weight         = 500;   // boldness, range 0(light) - 1000(bold)
        lf.Italic         = false;    
        lf.CharSet        = DEFAULT_CHARSET;                 
        lf.Quality        = 0;           
        lf.PitchAndFamily = 0;           
        strcpy(lf.FaceName, "Times New Roman"); // font style
    
        //
        // Create an ID3DXFont based on 'lf'.
        //
    
        if(FAILED(D3DXCreateFontIndirect(Device, &lf, &Font)))
        {
            ::MessageBox(0, "D3DXCreateFontIndirect() - FAILED", 0, 0);
            ::PostQuitMessage(0);
        }
            Device->BeginScene();
    
            RECT rect = {0, 0, Width, Height};
            Font->DrawText(
                0,
                FPSString, 
                -1, // size of string or -1 indicates null terminating string
                &rect,            // rectangle text is to be formatted to in windows coords
                DT_TOP | DT_LEFT, // draw in the top left corner of the viewport
                0xff000000);      // black text
    
            Device->EndScene();

2采用DIRECT3D绘制方式：

可以采用D3D绘图的方式实现更多的效果