AGI ?! FPU and OpenGL Radial blur tutorial in FASM

flat assembler
Message board for the users of flat assembler.

Index > Windows > AGI ?! FPU and OpenGL Radial blur tutorial in FASM

Author

Thread

Tyler Durden

Joined: 24 Feb 2004
Posts: 50

Tyler Durden 08 May 2004, 21:09

Hi there

I'm writing OpenGL tutorial in FASM 'bout Radial Blur. But it's too slow (on my GeForce 4 SE) ? Why ? So render 25 textured quads is too hard ? There is some code (variables used to stretch blur texture)

Code:

;fldz
fld  [blurDelta]
fadd [blurInc]
fstp [blurInc]
fld  [blurDec]
fsub [blurDelta]
fstp [blurDec]
fld  [blurAlpha]
fsub [alphaDelta]
fstp [blurAlpha]

If I uncomment fldz, the speed is greatle increased (why ?) but blur size is decreased Sad

Full source attahed... HELP !

Description:		Download
Filename:	rblur.rar
Filesize:	16.64 KB
Downloaded:	455 Time(s)

08 May 2004, 21:09

scientica
Retired moderator

Joined: 16 Jun 2003
Posts: 689
Location: Linköping, Sweden

scientica 09 May 2004, 16:30

fldz... hmm (thinks), isn't doesn't that push 0 to the fp stack? (st0 = 0.0f )
Maybe you should try mmx? (I've seen some examples where many pixels are processed at once)

(note: I put the code in yur post inside [ code ] tags - makes it easier to read code)

09 May 2004, 16:30

< Last Thread | Next Thread >

Forum Rules:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum