我明白了
Debug assertion failed.
p!=0
它指向:
_NoAddRefReleaseOnCComPtr<T>* operator->() const throw()
{
ATLASSERT(p!=NULL);
return (_NoAddRefReleaseOnCComPtr<T>*)p;
}
在“atlcomcli.h”中
据我了解,这意味着我忘记在某处初始化指针,但它们似乎都已初始化。
当我使用普通指针而不是“CComPtr”时,它会在 D3DFont.cpp 中的“D3DFont::Draw”中的“font->DrawTextA”处引发“访问冲突读取位置”
//D3DFont.h:
#include <D3DX10.h>
#include <atlbase.h>
#include <string>
class D3DFont
{
public:
D3DFont(void);
~D3DFont(void);
bool Create(ID3D10Device *device, std::string name, int width,
int height, int weight, int mipLevels, bool italic, BYTE charset,
BYTE quality, BYTE pitchAndFamily);
void Draw(LPD3DX10SPRITE sprite, std::string text, int charCount,
LPRECT rect, UINT format, D3DXCOLOR color);
private:
CComPtr<ID3DX10Font> font;
};
//D3DFont.cpp:
#include "D3DFont.h"
D3DFont::D3DFont(void){}
D3DFont::~D3DFont(void){}
bool D3DFont::Create( ID3D10Device *device, std::string name,
int width, int height, int weight, int mipLevels, bool italic,
BYTE charset, BYTE quality, BYTE pitchAndFamily )
{
D3DX10_FONT_DESC fd;
ZeroMemory(&fd, sizeof(D3DX10_FONT_DESC));
fd.Height = height;
fd.Width = width;
fd.Weight = weight;
fd.MipLevels = mipLevels;
fd.Italic = italic;
fd.CharSet = charset;
fd.Quality = quality;
fd.PitchAndFamily = pitchAndFamily;
strcpy_s(fd.FaceName, name.c_str());
// INITIALIZING FONT HERE
D3DX10CreateFontIndirect(device, &fd, &font);
return true;
}
void D3DFont::Draw( LPD3DX10SPRITE sprite, std::string text,
int charCount, LPRECT rect, UINT format, D3DXCOLOR color )
{
// ERROR HERE
font->DrawTextA(sprite, text.c_str(), charCount, rect, format, color);
}
以及我对上述功能的使用:
if( !font.Create(d3d.GetDevice(), "Impact", 0, 175, 0, 1, false,
OUT_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH | FF_DONTCARE) )
{
MessageBox(0, "Could not create font.", "Error!", MB_OK | MB_ICONERROR);
}
// later on...
RECT r = {35, 50, 0, 0};
font.Draw(0, "Test", -1, &r, DT_NOCLIP, d3d.GetColorObj(1.0f, 1.0f, 0.0f, 1.0f));
我能错过什么?
'D3DX10CreateFontIndirect' throws 0x8876086C 找不到是什么意思,但是有些google线程是和d3dDevice有关的,所以我猜想一定和它有关。当我有更多信息时会更新。