glVertexPointer & Speed

Graphics and GPU Programming Programming

Started by silvermace September 16, 2002 01:10 AM

1 comment, last by silvermace 21 years, 7 months ago

634

Author

September 16, 2002 01:10 AM

i was wondering .. is it expensive to use glVertexPointer several times per frame, eg Point to Map Vertices, then Point to Model Verts, then Transformed verts, etc etc .. ? if it is expensive, is there a fast way of doing the above? thanx .. y is the search feature diabled?

"I am a donut! Ask not how many tris/batch, but rather how many batches/frame!" -- Matthias Wloka & Richard Huddy, (GDC, DirectX 9 Performance)

http://www.silvermace.com/ -- My personal website

stefu

120

September 16, 2002 06:58 AM

Use it!

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DannerGL

122

September 16, 2002 12:44 PM

It''s certainly faster than using glBegin/End and you can get pretty good performance using vertex arrays in this ways.

There are a few HW vendor specific extensions which can increase your performance even further such as ATI_vertex_array_object.