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[solved][dx10]why can't readback the clicked pixel?

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methodology is correct; forgot to multiply MVP before drawing. -------------------------- hi, i mouse-click in the dx10 window, hope to readback the pixel's color:
	ScreenToClient(DXUTGetHWND(), &g_picked.pos);
        ...here new a 1x1 staging texture for rendertarget pTexRT;
	D3D10_BOX box = {g_picked.pos.x, g_picked.pos.y, 0, g_picked.pos.x + 1, g_picked.pos.y + 1, 1};
	pd3dDevice->CopySubresourceRegion(pTexStage, 0, 0, 0, 0, pTexRT, 0, &box);
	D3D10_MAPPED_TEXTURE2D mappedTex;
	pTexStage->Map(0, D3D10_MAP_READ, NULL, &mappedTex);
	float* pSrc = (float*)mappedTex.pData;
pSrc can't get my desired color. Confusing fact: when viewing pTexRT in PIX, the pixel at g_picked.pos is exactly what i want; but when manually writing pTexRT to .pfm and viewing it in HDRShop, the pixel i want is at another position. Did i miss something? Great thanks for suggestions! [Edited by - yk_cadcg on June 11, 2008 9:37:19 PM]

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