SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE);
SetTextureStageState( 0, D3DTSS_COLORARG2, D3DTA_DIFFUSE);
SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_BLENDTEXTUREALPHA);
anyone knows how to write these three lines in opengl?