Thijs Koerselman

I'm trying to use RTT with jit.gl.lua, but it doesn't seem to be working. I

figured a good start would be the RTT.capture example patch that comes with

jit.gl.lua. On my system the window stays black. I don't see anything.

Selecting the backend, FBO gives me the following errors:

jit.gl.fbo: unsupported framebuffer format!

jit.gl.fbo: error updating framebuffer attachment!

For the RTT backend there are no errors, but still the output is empty. I've

also tried the RTT.slab example. This one doesn't work either but odly the

fbo backend doesn't generate errors in this patch. Both backend options

I'm using the latest max/jitter/jit.gl.lua on an intel mac running

I'm already trying this as an alternative to the accum buffer which I failed

to get working. I'm running out of options.

I'm trying to use RTT with jit.gl.lua, but it doesn't seem to be working. I
figured a good start would be the RTT.capture example patch that comes with
jit.gl.lua. On my system the window stays black. I don't see anything.
Selecting the backend, FBO gives me the following errors:

jit.gl.fbo: unsupported framebuffer format!
jit.gl.fbo: error updating framebuffer attachment!

For the RTT backend there are no errors, but still the output is empty. I've
also tried the RTT.slab example. This one doesn't work either but odly the
fbo backend doesn't  generate errors in this patch. Both backend options
just show a black screen.

I'm using the latest max/jitter/jit.gl.lua on an intel mac running
10.5.2with an NVidia 7300GT

I'm already trying this as an alternative to the accum buffer which I failed
to get working. I'm running out of options.

jit-gl-lua-rtt

Here's the most trivial RTT example. If this doesn't work then

Script----------------------------------------------

local scene = jit.new("jit.gl.texture", this.drawto)

local vplane = jit.new("jit.gl.videoplane", this.drawto)

    jit.gl.begincapture(scene.name, 0)

            gl.Vertex(-1, 0, 0)

            gl.Vertex(0, 1, 0)

            gl.Vertex(1, 0, 0)

Here's the most trivial RTT example.  If this doesn't work then
something is out of whack.:

local scene = jit.new("jit.gl.texture", this.drawto)
local vplane = jit.new("jit.gl.videoplane", this.drawto)
vplane.transform_reset = 2
vplane.automatic = 0
vplane.texture = scene.name

function draw()
	jit.gl.begincapture(scene.name, 0)
		gl.Begin("TRIANGLES")
			gl.Vertex(-1, 0, 0)
			gl.Vertex(0, 1, 0)
			gl.Vertex(1, 0, 0)
		gl.End()
	jit.gl.endcapture(scene.name, 0)

On Thu, Mar 13, 2008 at 9:31 PM, Wesley Smith wrote:

> Here's the most trivial RTT example. If this doesn't work then

Thanks Wes, it appears to work. At least for the RTT backend. FBO still

generates the same errors I reported earlier. I tried to find where the

difference is and the problem appears to be the slab. If I take out the slab

from RTT.capture.lua.demo then the patch works. If I use the slab, I see

only the first frame (without effect) and then the screen goes black. I can

see the first frame again by reloading the lua file.

I tried co.inverse.jxs instead of wobble, but the output is the same. Any

more tests I could do related to the slab issue?

Btw, is FBO going to give a lot better performance over RTT?

On Thu, Mar 13, 2008 at 9:31 PM, Wesley Smith  wrote:

> Here's the most trivial RTT example.  If this doesn't work then
> something is out of whack.:
>
>
Thanks Wes, it appears to work. At least for the RTT backend. FBO still
generates the same errors I reported earlier. I tried to find where the
difference is and the problem appears to be the slab. If I take out the slab
from RTT.capture.lua.demo then the patch works. If I use the slab, I see
only the first frame (without effect) and then the screen goes black. I can
see the first frame again by reloading the lua file.

I tried co.inverse.jxs instead of wobble, but the output is the same. Any
more tests I could do related to the slab issue?

jit.gl.lua RTT