fixed a bug involving using alpha in combines and also moved some calls into texture creation section as they do not need to be repeated every frame.
fixed a bug involving using alpha in combines and also moved some calls into texture creation section as they do not need to be repeated every frame.


git-svn-id: 5afc437a751a4ff2ced778146f5faadda0b504ab@1369 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

chototsu/MikuMikuStudio,chototsu/MikuMikuStudio,chototsu/MikuMikuStudio,chototsu/MikuMikuStudio