D3D API - D3DTA_TEMP

作用：把顏色暫時寫入別的地方，不更新到后臺緩沖區

The texture argument is a temporary register color for read or write. D3DTA_TEMP is supported if the D3DPMISCCAPS_TSSARGTEMP device capability is present. The default value for the register is (0.0, 0.0, 0.0, 0.0). Permissions are read/write.

使用：

??g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLOROP, D3DTOP_SELECTARG1);
??g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG1, D3DTA_DIFFUSE);
??g_pd3dDevice->SetTextureStageState(0, D3DTSS_RESULTARG, D3DTA_TEMP);
??g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAOP, D3DTOP_DISABLE);

??g_pd3dDevice->SetTextureStageState(1, D3DTSS_COLOROP, D3DTOP_MODULATE);
??g_pd3dDevice->SetTextureStageState(1, D3DTSS_COLORARG1, D3DTA_TEXTURE);
??g_pd3dDevice->SetTextureStageState(1, D3DTSS_COLORARG2, D3DTA_TEMP);
??g_pd3dDevice->SetTextureStageState(1, D3DTSS_TEXCOORDINDEX, 0);
??g_pd3dDevice->SetTextureStageState(1, D3DTSS_ALPHAOP, D3DTOP_DISABLE);

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