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View Full Version : same performance with direct draw & Vertex array



Rondey
03-18-2009, 02:32 PM
Why I have low performance result with direct draw mode and also with vertex array ?

the 3000 records in the file (data.txt) are show with a animation motion slow; its the same performance in twice cases.

I believe so with vertex array to have a faster motion but... don't.

who have any comment ?...please...!

BionicBytes
03-19-2009, 05:03 AM
I think we need a bit more information and detail here.
What are you trying to do? and what's in the data.txt file ? (model positions, model matricies, vertex attributes?)
Do you access the file each draw call, or do you read the entire file into memory first?

Rondey
03-19-2009, 06:14 AM
what I try to do....Well; show all records (draw)the scene; the animation environment. Into the file to have model matrix for build triangles, squares, lines...simple geometry.

How is the file access; well reading all the file since the first record until the bottom. and draw all the scene in one
call.

How many record ?
3000

Rosario Leonardi
03-19-2009, 07:17 AM
how slow is your program?
I get very high frame rate plotting graph with more than 5000 point.
Can you post the drawing part of the code?