C++ LPDIRECT3DTEXTURE9::LockRect方法代码示例

void DevState::blit(unsigned int x, unsigned int y, unsigned int w, unsigned int h) {
	// Blit is called often. Thus, we do not want to always log here.
	#ifdef EXTENDED_OVERLAY_DEBUGOUTPUT
	ods("D3D9: Blit %d %d %d %d", x, y, w, h);
	#endif

	if (! texTexture || !a_ucTexture)
		return;

	D3DLOCKED_RECT lr;

	if ((x == 0) && (y == 0) && (w == uiWidth) && (h == uiHeight)) {
		if (texTexture->LockRect(0, &lr, NULL, D3DLOCK_DISCARD) != D3D_OK)
			return;
	} else {
		RECT r;

		r.left = x;
		r.top = y;
		r.right = x + w;
		r.bottom = y + h;

		if (texTexture->LockRect(0, &lr, &r, 0) != D3D_OK)
			return;
	}

	for (unsigned int r=0;r < h;++r) {
		unsigned char *dptr = reinterpret_cast<unsigned char *>(lr.pBits) + r * lr.Pitch;
		unsigned char *sptr = a_ucTexture + 4 * ((y + r) * uiWidth + x);
		memcpy(dptr, sptr, w * 4);
	}

	texTexture->UnlockRect(0);
}

void DevState::blit(unsigned int x, unsigned int y, unsigned int w, unsigned int h) {
	ods("D3D9: Blit %d %d %d %d", x, y, w, h);

	if (! texTexture || !a_ucTexture)
		return;

	D3DLOCKED_RECT lr;

	if ((x == 0) && (y == 0) && (w == uiWidth) && (h == uiHeight)) {
		if (texTexture->LockRect(0, &lr, NULL, D3DLOCK_DISCARD) != D3D_OK)
			return;
	} else {
		RECT r;

		r.left = x;
		r.top = y;
		r.right = x + w;
		r.bottom = y + h;

		if (texTexture->LockRect(0, &lr, &r, 0) != D3D_OK)
			return;
	}

	for (unsigned int r=0;r < h;++r) {
		unsigned char *dptr = reinterpret_cast<unsigned char *>(lr.pBits) + r * lr.Pitch;
		unsigned char *sptr = a_ucTexture + 4 * ((y + r) * uiWidth + x);
		memcpy(dptr, sptr, w * 4);
	}

	texTexture->UnlockRect(0);
}

IDirect3DTexture9 *CreatTex(LPSTR dat)
{
	LPDIRECT3DTEXTURE9 pTex = NULL;
	UINT xx,yy;
	xx = *(UINT*)(dat+4);
	yy = *(UINT*)(dat+8);
	D3DLOCKED_RECT rc;
	HRESULT hr;

	if (*(DWORD*)(dat+0x28) == 'DXT3')
	{
		hr = g_pD3DDevice->CreateTexture(xx,yy,0,0 ,D3DFMT_DXT3,D3DPOOL_MANAGED,&pTex,NULL);
		if (hr != D3D_OK) return NULL;

		hr = pTex->LockRect(0,&rc,NULL,0);
		if (hr == D3D_OK)
		{
			CopyMemory(rc.pBits,dat+0x28+12,(xx/4) * (yy/4) * 16 );
			pTex->UnlockRect(0);
		}
		return pTex;
	}

	if (*(DWORD*)(dat+0x28) == 'DXT1')
	{
		hr = g_pD3DDevice->CreateTexture(xx,yy,0,0,D3DFMT_DXT1,D3DPOOL_MANAGED,&pTex,NULL);
		if (hr != D3D_OK) return NULL;

		hr = pTex->LockRect(0,&rc,NULL,0);
		if (hr == D3D_OK)
		{
			CopyMemory(rc.pBits,dat+0x28+12,(xx/4) * (yy/4) * 8  );
			pTex->UnlockRect(0);
		}
		return pTex;
	}

	hr = g_pD3DDevice->CreateTexture(xx,yy,0,0,D3DFMT_A8R8G8B8,D3DPOOL_MANAGED,&pTex,NULL);
	if (hr != D3D_OK) return NULL;

	hr = pTex->LockRect(0,&rc,NULL,0);
	if (hr == D3D_OK)
	{
		for (DWORD jy = 0; jy < yy; ++jy)
		{
			for (DWORD jx = 0; jx < xx; ++jx)
			{
				DWORD *pp  = (DWORD *)rc.pBits;
				BYTE  *idx = (BYTE  *)(dat+0x28+0x400);
				DWORD *pal = (DWORD *)(dat+0x28);
				pp[(yy-jy-1)*xx+jx] = pal[idx[jy*xx+jx]];
			}
		}
		pTex->UnlockRect(0);
	}
	return pTex;
}

int l_Image_Load( lua_State* L )
{
	D3DXIMAGE_INFO imgInfo;
	const char* fileName = lua_tostring( L, 1 );

	bool dxtCompression = false;
	D3DFORMAT d3dfmt = D3DFMT_UNKNOWN;
	//check for dds format
	{
		if( _strcmpi( "dds", fileName + strlen( fileName ) - 3 ) == 0 )
		{
			DDSHEAD header;
			FILE* f;
			if(fopen_s( &f, fileName, "rb" ) == 0)
			{
				if( fread( &header, sizeof(header), 1, f ) == 1 )
				{
					if( strncmp( (const char*)header.Signature, "DDS ", 4 ) == 0 && ( header.FourCC == D3DFMT_DXT1 || header.FourCC == D3DFMT_DXT3 || header.FourCC == D3DFMT_DXT5 ) )
					{
						d3dfmt = D3DFMT_A8R8G8B8;
					}
				}
				fclose(f);
			}
		}
	}

	LPDIRECT3DTEXTURE9 texture; 

	HRESULT hr = D3DXCreateTextureFromFileEx( g_pd3dDevice, fileName, D3DX_DEFAULT_NONPOW2,  D3DX_DEFAULT_NONPOW2, D3DX_FROM_FILE, 0, d3dfmt, D3DPOOL_SCRATCH, D3DX_DEFAULT, D3DX_DEFAULT, 0, &imgInfo, 0, &texture );

	if( FAILED( hr ) )
	{
		return 0;
	}

	ImageData* imgData = createImage();
	imgData->width = imgInfo.Width;
	imgData->height = imgInfo.Height;
	imgData->format = getFormatByD3D( imgInfo.Format );
	imgData->imgData = malloc( imgData->width * imgData->height * imgData->format->bytesPerPixel );

	D3DLOCKED_RECT rect;
	texture->LockRect(0, &rect, 0, 0 );

	memcpy( imgData->imgData, rect.pBits, imgData->width * imgData->height * imgData->format->bytesPerPixel );

	texture->UnlockRect( 0 );

	texture->Release();

	//lua_pushlightuserdata( L, imgData );

	ImageData** luaData = lua_pushimage( L );

	*luaData = imgData;

	return 1;
}

LPDIRECT3DTEXTURE9 D3D9::CreateTexture(int texWidth, int texHeight, D3DCOLOR color)
{
	LPDIRECT3DTEXTURE9 pTexture;

	HRESULT hr = D3DXCreateTexture(d3ddevice_, 
		texWidth, 
		texHeight, 
		0, 
		0, 
		D3DFMT_A8R8G8B8,  // 4 bytes for a pixel 
		D3DPOOL_MANAGED, 
		&pTexture);

	if (FAILED(hr))
	{
		MessageBox(NULL, L"Create texture failed", L"Error", 0);
	}

	// Lock the texture and fill in color
	D3DLOCKED_RECT lockedRect;
	hr = pTexture->LockRect(0, &lockedRect, NULL, 0);
	if (FAILED(hr))
	{
		MessageBox(NULL, L"Lock texture failed!", L"Error", 0);
	}

	DWORD sideColor = 0xff000000; // the side line color

	int side_width = 10;

	// Calculate number of rows in the locked Rect
	int rowCount = (texWidth * texHeight * 4 ) / lockedRect.Pitch;

	for (int i = 0; i < texWidth; ++i)
	{
		for (int j = 0; j < texHeight; ++j)
		{
			int index = i * rowCount + j;

			int* pData = (int*)lockedRect.pBits;

			if (i <= side_width || i >= texWidth - side_width 
				|| j <= side_width || j >= texHeight - side_width)
			{
				memcpy(&pData[index], &sideColor, 4);
			}
			else
			{
				memcpy(&pData[index], &color, 4);
			}
		}
	}

	pTexture->UnlockRect(0);

	return pTexture;
}

// シーンの描画
void DrawScene(void* data)
{
#if 1
	struct vertex 
	{
	    FLOAT x, y, z, rhw;
		FLOAT tu, tv;
	};
	vertex v[4] = 
	{
		{0,                        0, 0.0f, 1.0f, 0.0f, 0.0f},
		{SCREEN_WIDTH,             0, 0.0f, 1.0f, 1.0f, 0.0f},
		{0,            SCREEN_HEIGHT, 0.0f, 1.0f, 0.0f, 1.0f},
		{SCREEN_WIDTH, SCREEN_HEIGHT, 0.0f, 1.0f, 1.0f, 1.0f},
	};

	D3DLOCKED_RECT pRect;
	DWORD time,lasttime;
	lasttime = timeGetTime();
	time = lasttime;

	while(true)
	{
		time = timeGetTime();
		if(time-lasttime >= 1000*10)
		{
			g_tex->LockRect(0, &pRect, NULL, D3DLOCK_DISCARD);
			for(int y = 0; y<SCREEN_HEIGHT; y++)
			{
				for(int x = 0; x<SCREEN_WIDTH; x++)
				{
					DWORD color = 0x00ff00ff;
					color = (edupt::to_int(image[y*SCREEN_WIDTH+x].x_)<<16) + (edupt::to_int(image[y*SCREEN_WIDTH+x].y_)<<8) + edupt::to_int(image[y*SCREEN_WIDTH+x].z_);
					memcpy((BYTE*)pRect.pBits+pRect.Pitch*y + 4*x, &color, sizeof(DWORD));
				}
			}
			g_tex->UnlockRect(0);
			lasttime = time;
		}

		g_pD3DDev->BeginScene();
		g_pD3DDev->Clear(0,NULL,D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER,D3DCOLOR_RGBA(128,128,128,0),1.0f,0);

		g_pD3DDev->SetFVF(D3DFVF_XYZRHW | D3DFVF_TEX1);

		g_pD3DDev->SetTexture(0, g_tex);
		g_pD3DDev->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP, 2, v, sizeof(vertex));

		g_pD3DDev->EndScene();
		g_pD3DDev->Present(NULL, NULL, NULL, NULL);
	}
#endif
}

static void copy_texture_bits( LPTEXTURE srcT, LPTEXTURE dstT )
{
	HRESULT hr;
	D3DLOCKED_RECT srcRect;
	D3DLOCKED_RECT dstRect;
	unsigned int y, x;
	BYTE* srcBits;
	BYTE* dstBits;
	D3DSURFACE_DESC srcDesc;
	LPDIRECT3DTEXTURE9 srcTexture = (LPDIRECT3DTEXTURE9) srcT;
	LPDIRECT3DTEXTURE9 dstTexture = (LPDIRECT3DTEXTURE9) dstT;
	srcTexture->GetLevelDesc(0,&srcDesc);
	hr = srcTexture->LockRect(0,&srcRect,NULL,D3DLOCK_READONLY);
	if(FAILED(hr))
		return;
	hr = dstTexture->LockRect(0,&dstRect,NULL,D3DLOCK_DISCARD);
	if(FAILED(hr))
		return;
	srcBits = (BYTE*)srcRect.pBits;
	dstBits = (BYTE*)dstRect.pBits;
	for (y = 0; y < srcDesc.Height; y++)
	{
		for (x = 0; x < srcDesc.Width; x++)
		{
			// move to the correct off set in the table
			// pitch is the width of a row
			// (x*size) is the length of each pixel data
			DWORD srcIndex = (x*4)+(y*srcRect.Pitch);
			DWORD dstIndex = (x*4)+(y*dstRect.Pitch);
			// D3DFMT_A8R8G8B8 data will be accessible backwards: bgra
			dstBits[dstIndex]   = (BYTE)gamma_table[srcBits[srcIndex]];	// Blue
			dstBits[dstIndex+1] = (BYTE)gamma_table[srcBits[srcIndex+1]];	// Green
			dstBits[dstIndex+2] = (BYTE)gamma_table[srcBits[srcIndex+2]];	// Red
			dstBits[dstIndex+3] = (BYTE)gamma_table[srcBits[srcIndex+3]];	// Alpha
		}
	}
	dstTexture->UnlockRect(0);
	srcTexture->UnlockRect(0);
}

	bool Atlas::createTexure_( Logger & _logger, const MAGIC_CHANGE_ATLAS & c, LPDIRECT3DTEXTURE9 * _texture )
	{
		uint32_t image_width;
		uint32_t image_height;

		unsigned char * pixels = nullptr;

		if( c.data == nullptr )
		{
			pixels = imageLoadFromFile( c.file, image_width, image_height );
		}
		else
		{
			pixels = imageLoadFromMemory( c.data, c.length, image_width, image_height );
		}

		unsigned char * correct_pixels = pixels;

		UINT texture_width = getTexturePOW2( image_width );
		UINT texture_height = getTexturePOW2( image_height );

		LPDIRECT3DTEXTURE9 texture = NULL;
		if( m_pDevice->CreateTexture( texture_width, texture_height, 1, 0, D3DFMT_A8R8G8B8, D3DPOOL_MANAGED, &texture, NULL ) != D3D_OK )
		{
			return false;
		}

		D3DLOCKED_RECT lockedRect;
		DXCALL texture->LockRect( 0, &lockedRect, NULL, D3DLOCK_DISCARD );

		if( lockedRect.pBits == NULL || lockedRect.Pitch == 0 )
		{
			return false;
		}

		for( size_t i = 0; i != image_height; ++i )
		{
			unsigned char * image = correct_pixels + i * image_width * 4;
			unsigned char * bits = static_cast<unsigned char *>(lockedRect.pBits) + lockedRect.Pitch * i;

			std::copy( image, image + image_width * 4, bits );
		}

		DXCALL texture->UnlockRect( 0 );

		imageFree( pixels );

		*_texture = texture;

		return true;
	}

	bool AlphaMap::init(bool pAlphaCheck, LPDIRECT3DTEXTURE9 pTexture)
	{
    d_solid = true;

		if (!pAlphaCheck)
			return false;

		D3DSURFACE_DESC surfaceDesc;
		pTexture->GetLevelDesc(0, &surfaceDesc);

		d_width = surfaceDesc.Width;
		d_height = surfaceDesc.Height;
		d_mask.resize(d_width * d_height);

		D3DLOCKED_RECT lockedRect;
		if (SUCCEEDED(pTexture->LockRect(0, &lockedRect, NULL, D3DLOCK_DISCARD)))
		{
			unsigned char* bits = (unsigned char*)lockedRect.pBits;

			for (int y = 0; y < d_height; ++y)
			{
				for (int x = 0; x < d_width; ++x)
				{
					bool solid = (bits[x * 4 + y * lockedRect.Pitch + 3] != 0);
					d_mask[x + y * d_width] = solid;
					if (!solid)
						d_solid = false;
				}
			}
			pTexture->UnlockRect(0);
		}

		return true;
	}

lpta::LptaTexture::DATA LptaD3DTextureManager::GenerateDefaultData(void)
{
    LPDIRECT3DTEXTURE9 textureData = nullptr;
    D3DLOCKED_RECT d3dLockedRect;
    HRESULT result = d3ddev->CreateTexture(
        DEFAULT_TEXTURE_WIDTH, DEFAULT_TEXTURE_HEIGHT,
        1, 0,
        D3DFMT_A8R8G8B8,
        D3DPOOL_MANAGED,
        &textureData,
        nullptr
    );
    if (FAILED(result)) {
        throw TextureD3DFailure("could not obtain texture object for default");
    }
    result = textureData->LockRect(0, &d3dLockedRect, nullptr, 0);
    if (FAILED(result)) {
        textureData->Release();
        throw TextureD3DFailure("failed to lock rectangle to set default texture color");
    }
    unsigned long *rawData = (unsigned long *)d3dLockedRect.pBits;
    for (unsigned long *pixel = rawData; 
        pixel < rawData + (DEFAULT_TEXTURE_WIDTH * DEFAULT_TEXTURE_HEIGHT); ++pixel) {

        *pixel = DEFAULT_TEXTURE_COLOR;
    }
    textureData->UnlockRect(0);
    return (lpta::LptaTexture::DATA)textureData;
}

/* Copy bitmap->memory to texture memory */
static void d3d_sync_bitmap_texture(ALLEGRO_BITMAP *bitmap,
   int x, int y, int width, int height)
{
   D3DLOCKED_RECT locked_rect;
   RECT rect;
   ALLEGRO_BITMAP_D3D *d3d_bmp = (ALLEGRO_BITMAP_D3D *)bitmap;
   LPDIRECT3DTEXTURE9 texture;

   rect.left = x;
   rect.top = y;
   rect.right = x + width;
   rect.bottom = y + height;

   if (_al_d3d_render_to_texture_supported())
      texture = d3d_bmp->system_texture;
   else
      texture = d3d_bmp->video_texture;

   if (texture->LockRect(0, &locked_rect, &rect, 0) == D3D_OK) {
	   _al_convert_bitmap_data(bitmap->memory, bitmap->format, bitmap->w*al_get_pixel_size(bitmap->format),
		  locked_rect.pBits, bitmap->format, locked_rect.Pitch,
		  x, y, 0, 0, width, height);
	   /* Copy an extra row and column so the texture ends nicely */
	   if (rect.bottom > bitmap->h) {
		  _al_convert_bitmap_data(
			 bitmap->memory,
			 bitmap->format, bitmap->w*al_get_pixel_size(bitmap->format),
			 locked_rect.pBits,
			 bitmap->format, locked_rect.Pitch,
			 0, bitmap->h-1,
			 0, height,
			 width, 1);
	   }
	   if (rect.right > bitmap->w) {
		  _al_convert_bitmap_data(
			 bitmap->memory,
			 bitmap->format, bitmap->w*al_get_pixel_size(bitmap->format),
			 locked_rect.pBits,
			 bitmap->format, locked_rect.Pitch,
			 bitmap->w-1, 0,
			 width, 0,
			 1, height);
	   }
	   if (rect.bottom > bitmap->h && rect.right > bitmap->w) {
		  _al_convert_bitmap_data(
			 bitmap->memory,
			 bitmap->format, bitmap->w*al_get_pixel_size(bitmap->format),
			 locked_rect.pBits,
			 bitmap->format, locked_rect.Pitch,
			 bitmap->w-1, bitmap->h-1,
			 width, height,
			 1, 1);
	   }
	   texture->UnlockRect(0);
   }
   else {
      ALLEGRO_ERROR("d3d_sync_bitmap_texture: Couldn't lock texture to upload.\n");
   }
}

/**-----------------------------------------------------------------------------
 * 정점버퍼를 생성하고 정점값을 채워넣는다.
 * HeightMap정보도 여기서 초기화한다.
 *------------------------------------------------------------------------------
 */
HRESULT InitVB()
{
	D3DSURFACE_DESC		ddsd;
	D3DLOCKED_RECT		d3drc;

	g_pTexHeight->GetLevelDesc( 0, &ddsd );	// 텍스처의 정보
	g_cxHeight = ddsd.Width;				// 텍스처의 가로크기
	g_czHeight = ddsd.Height;				// 텍스처의 세로크기
	g_pLog->Log( "Texture Size:[%d,%d]", g_cxHeight, g_czHeight );
	g_pvHeightMap = new D3DXVECTOR3[g_cxHeight * g_czHeight];	// 높이맵배열 생성

	if ( FAILED( g_pd3dDevice->CreateVertexBuffer( ddsd.Width*ddsd.Height*sizeof( CUSTOMVERTEX ),
		0, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &g_pVB, NULL ) ) )
	{
		return E_FAIL;
	}

	// 텍스처 메모리 락!
	g_pTexHeight->LockRect( 0, &d3drc, NULL, D3DLOCK_READONLY );
    VOID* pVertices;
	// 정점버퍼 락!
	if ( FAILED( g_pVB->Lock( 0, g_cxHeight*g_czHeight*sizeof( CUSTOMVERTEX ), (void**)&pVertices, 0 ) ) )
	{
		return E_FAIL;
	}

	CUSTOMVERTEX	v;
	CUSTOMVERTEX*	pV = (CUSTOMVERTEX*)pVertices;
	for ( DWORD z = 0; z < g_czHeight; z++ )
	{
		for ( DWORD x = 0; x < g_cxHeight; x++ )
		{
			v.p.x = (float)x - g_cxHeight / 2.0f;		// 정점의 x좌표(메시를 원점에 정렬)
			v.p.z = -( (float)z - g_czHeight / 2.0f );	// 정점의 z좌표(메시를 원점에 정렬), z축이 모니터안쪽이므로 -를 곱한다.
			v.p.y = ( (float)( *( (LPDWORD)d3drc.pBits + x + z*( d3drc.Pitch / 4 ) ) & 0x000000ff ) ) / 10.0f;	/// DWORD이므로 pitch/4
			v.n.x = v.p.x;
			v.n.y = v.p.y;
			v.n.z = v.p.z;
			D3DXVec3Normalize( &v.n, &v.n );
			v.t.x = (float)x / ( g_cxHeight - 1 );
			v.t.y = (float)z / ( g_czHeight - 1 );
			*pV++ = v;									// 정점버퍼에 정점 저장
			g_pvHeightMap[z * g_cxHeight + x] = v.p;	// 높이맵에 정점 저장
		}
	}

    g_pVB->Unlock();
	g_pTexHeight->UnlockRect( 0 );

    return S_OK;
}

void AmjuGLDX9::SetTexture(
  AmjuGL::TextureHandle* th, 
  AmjuGL::TextureType tt, 
  AmjuGL::TextureDepth td,  
  int width, 
  int height, 
  uint8* data)
{
  AMJU_CALL_STACK;

  HRESULT res = D3DXCreateTexture(
    dd, //LPDIRECT3DDEVICE9 pDevice,
    width, //UINT Width,
    height, //UINT Height,
    0, //  Mip Levels: 0 means create all
    D3DUSAGE_DYNAMIC, //DWORD Usage,
    (td == AmjuGL::AMJU_RGB ? D3DFMT_R8G8B8 : D3DFMT_A8R8G8B8), //D3DFORMAT Format,
    D3DPOOL_DEFAULT, // Pool,
    reinterpret_cast<LPDIRECT3DTEXTURE9*>(th) //LPDIRECT3DTEXTURE9 * ppTexture
  );

  LPDIRECT3DTEXTURE9 pTex = reinterpret_cast<LPDIRECT3DTEXTURE9>(*th);

  D3DLOCKED_RECT lockedRect;
  pTex->LockRect(0, &lockedRect, NULL, 0);

  switch (td)
  {
  case AmjuGL::AMJU_RGB:
    CopyRGBTexture((uint8*)lockedRect.pBits, lockedRect.Pitch, data, width, height); 
    break;
  case AmjuGL::AMJU_RGBA:
    CopyRGBATexture((uint8*)lockedRect.pBits, lockedRect.Pitch, data, width, height); 
    break;
  }

  pTex->UnlockRect(0);

  // TODO Create data for each mipmap level.
  // NB We want the same functionality as screenshot shrinking.
  IDirect3DSurface9 * pSurfaceLevel;
  for (unsigned int iLevel = 0; iLevel < pTex->GetLevelCount(); iLevel++)
  {
    pTex->GetSurfaceLevel(iLevel, &pSurfaceLevel);

    // TODO Write this mip map
    
    pSurfaceLevel->Release();
  }
}

/*  CDirect3D::BlankTexture
clears a texture (fills it with zeroes)
IN:
texture		-	the texture to be blanked
-----
returns true if successful, false otherwise
*/
bool CDirect3D::BlankTexture(LPDIRECT3DTEXTURE9 texture)
{
	D3DLOCKED_RECT lr;
	HRESULT hr;

	if(FAILED(hr = texture->LockRect(0, &lr, NULL, 0))) {
		DXTRACE_ERR_MSGBOX(TEXT("Unable to lock texture"), hr);
		return false;
	} else {
		memset(lr.pBits, 0, lr.Pitch * quadTextureSize);
		texture->UnlockRect(0);
		return true;
	}
}

bool CAnimationSpooler::SetColorKey(LPDIRECT3DTEXTURE9 pTexture, LPDIRECT3DSURFACE9 pSurface, int iTexSize, COLORREF clrColorKey)
{
   ASSERT(pTexture);
   ASSERT(pSurface);

   if( clrColorKey == CLR_INVALID ) return true;

   // Get colorkey's red, green, and blue components
   // and put the colorkey in the texture's native format
   DWORD r = GetRValue(clrColorKey);
   DWORD g = GetGValue(clrColorKey);
   DWORD b = GetBValue(clrColorKey);
   DWORD dwColorKey = D3DCOLOR_ARGB(255,r,g,b);

   HRESULT Hr;
   LPDIRECT3DTEXTURE9 pTex = NULL;
   Hr = m_p3DDevice->CreateTexture(iTexSize, iTexSize, 1, D3DUSAGE_DYNAMIC, D3DFMT_A8R8G8B8, D3DPOOL_SYSTEMMEM, &pTex, NULL);
   if( FAILED(Hr) ) return false;
   CSafeRelease<IDirect3DTexture9> RefTex = pTex;
   LPDIRECT3DSURFACE9 pTexSurf = NULL;
   Hr = pTex->GetSurfaceLevel(0, &pTexSurf);
   if( FAILED(Hr) ) return false;
   CSafeRelease<IDirect3DSurface9> RefTexSurf = pTexSurf;
   Hr = m_p3DDevice->GetRenderTargetData(pSurface, pTexSurf);
   if( FAILED(Hr) ) return false;

   // Lock the texture and scan through each pixel, replacing the colorkey pixels
   D3DLOCKED_RECT d3dlr;
   Hr = pTex->LockRect(0, &d3dlr, 0, 0);
   if( FAILED(Hr) ) return false;
   DWORD* pBits = static_cast<DWORD*>(d3dlr.pBits);
   for( int y = 0; y < iTexSize; y++ ) {
      for( int x = 0; x < iTexSize; x++ ) {
         if( pBits[x] == dwColorKey ) pBits[x] = 0x00000000;
         else pBits[x] |= 0xff000000;
      }
      pBits += d3dlr.Pitch / sizeof(DWORD);
   }
   pTex->UnlockRect(0);

   // Copy modified data back
   POINT pt = { 0, 0 };
   RECT rcDest = { 0, 0, iTexSize, iTexSize };
   Hr = m_p3DDevice->UpdateSurface(pTexSurf, &rcDest, pSurface, &pt);

   return true;
}