D3D API - D3DTSS_CONSTANT

D3DTSS_CONSTANT

Per-stage constant color. To see if a device supports a per-stage constant color, see the D3DPMISCCAPS_PERSTAGECONSTANT constant in D3DPMISCCAPS. D3DTSS_CONSTANT is used by D3DTA_CONSTANT. See D3DTA.

D3DTA_CONSTANT

　　Select a constant from a texture stage. The default value is 0xffffffff.

使用：

  g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLOROP, D3DTOP_MODULATE);
  g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG1, D3DTA_CONSTANT);
  g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG2, D3DTA_TEXTURE);
  g_pd3dDevice->SetTextureStageState(0, D3DTSS_CONSTANT, 0xff00ff00);
  g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAOP, D3DTOP_DISABLE);