OpenGL - Replacement for BltFast with EFX_OPACITY?

[Nacho84]

Hi! Since I'm migrating my rendering code to OpenGL ES for iPhone, I need to change the calls to the methods that belong to the E2DSurface "buffer" (the one from ecd.dsp->buffer) so that they make use of ClassEDisplay directly.

The only function calls I haven't been able to port are the ones that make use of the "flags" and "property" parameters from E2DSurface::BltFast (for example, in those cases where I need to blit an image with a certain opacity by using the EFX_OPACITY flag). How can I write equivalent code for a semi-transparent blit when using OpenGL?

Thanks for your reply,

--Nacho

[edge]

Hi Nacho,

Use ClassEDisplay :: SetShading with E3D_TEXTURE and EFX_ filters before calling BltFast. This will apply the filter while blitting. The property value of SetShading works similar to the property value of BltFast you've been using before.

[Nacho84]

Great, it's working like a charm on iPhone. Thanks for your reply!

--Nacho