Problem with "Render to texture"

[Gilmer]

Well, my objective is to create a texture that update dynamically. A cubemap dynamic, for example. Each face of this texture, will have 256x256. I did the following, I took a shader, which mounts the cube map, from a 1536x256 texture. Being a face side by side, so I need updating this texture.

 

I want to do so, put the camera in the center of the object, render, and place the rendered texture (256x256), in the buffer that I created that has 1536x256. So rotate 90 degrees to the camera, rendering, and position in the buffer on the side of the texture you created earlier. So it goes ...

 

But the problem is the rendered image is not rendering the skybox. Only the models around. Is there any command that I need to upgrade to, or set it?

 

Here's a picture of my scene. The camera to render this is inside the box:

 

 

 

And the code used in the box model:

 

require("scripts/class")
require("Scripts/constants/engine_const")
require("Scripts/LinkedList")
require("Scripts/filesystem")
require("Scripts/math/math")

local class=CreateClass(...)

fw=GetGlobalObject("framewerk")

function class:CreateObject(model)
local object=self.super:CreateObject(model)

cameracube = CreateCamera()
CameraClearMode(cameracube,1+2)
CameraClearColor(cameracube,Vec4(255,0,0,0))
cameracube:SetPosition(model:GetPosition())
cameracube:Hide()

rotcam = cameracube:GetRotation()

--main camera
maincamera = fw.main.camera


-- buffers
mainbuffer = CurrentBuffer()
buffercam = CreateBuffer(GraphicsWidth(),GraphicsHeight(),1+2+4)
--bufferlight = CreateBuffer(GraphicsWidth(),GraphicsHeight(),1+2+4)

buffertex = CreateBuffer(256*2,256,1+2+4)
--buffertex2 = CreateBuffer(256,256,1+2+4)


function object:Update()

	model:Hide()


	cameracube:Show()
	maincamera:Hide()

	--Visao1
	cameracube:SetRotation(rotcam)
	SetBuffer(buffercam)
	RenderWorld()
	RenderLights(buffercam)

	colorbuffer = GetColorBuffer(buffercam)

	SetBuffer(buffertex)
	DrawImage(colorbuffer,0,256,256,-256)


	--Visao2
	cameracube:Turnf(0,90,0)
	SetBuffer(buffercam)
	RenderWorld()
	RenderLights(buffercam)

	colorbuffer = GetColorBuffer(buffercam)

	SetBuffer(buffertex)
	DrawImage(colorbuffer,256,256,256,-256)




	SetBuffer(mainbuffer)


	colorbuffer3 = GetColorBuffer(buffertex)
	colorbuffer4 = GetColorBuffer(buffertex2)

	cameracube:Hide()
	maincamera:Show()


	DrawImage(colorbuffer3,0,256,256*2,-256)
	--DrawImage(colorbuffer4,0,512,256,-256)
	Flip()



	model:Show()



end



end

 

And as I do for the texture image rendered, not flashing on the screen there?

 

 

Thanks all

 

 

(I posted here, why do not know what would be the most appropriate place for this doubt)

[Joh]

Do you use Framework? If yes skyboxes is in another world. Backgorund if i don't remeber wrong.

[Gilmer]

ok, but how can I access the background of framewerk?

 

And one question, how do i change a texture, which is inside the file.mat? For example, in the file, is this:

 

"texture0=reflect.dds"

 

How i can create a texture, but the shader always update the new texture??

 

Thanks Joh...

[Gilmer]

no one?

 

I need to know how I do to render the skybox from the background of framewerk, through a file .lua of some model. I already tried a lot of ways but I can not, the documentation is not very explanatory:

 

fw.main.world.GetBackground()..

fw.background....

 

how??

[Joh]

Well you could be able to do it, just changing the world goes on BG paint the buffer, so change the world again paint the buffer and find a way to merge the 2 image.

Wich color you get where should be the skyboxes?

[Gilmer]

Here is the problem ..

So, I try to reformulate my question, I do not speak English very well, I guess I'm not getting play me right ... hehehe

 

I have two cameras on the scene, one is the framewerk, which normally created in the editor, and the other is one I created the script .lua of model. But the problem is that when i send rendering some image created by the camera, it renders everything except the skybox. The visions they are having:

 

 

 

What function should i use to be able to show the skybox on the second camera?

 

thanks joh

[Josh]

I would call fw:Render() a second time and move the camera.

[Joh]

What i am tryng to explain is that you use framewerk wich have 3 worlds in total.. With your cam you don't renderize those worlds, so the cam won't be able to see them.

RenderWorld()

With this command you renderize only the current world, so you will probably fix the problem when you'll renderize every world in the correct order..

So it should be BG, World and transparency.

[Gilmer]

Thanks Joh and Josh. I managed to solve the problem....

 

thanks

[Josh]

In the future, I want to implement a feature I am calling "stages". This will allow you to define a stage for an entity or material, and then render a camera one stage at a time, with your own code in between to handle effects. Something like this:

 

camera.BeginRender();

camera.Render(-1);// draw skybox

camera.Render(0);// draw main stuff

//Do whatever post-processing stuff you want

camera.Render(1);// draw transparent objects

camera.EndRender();

 

This would eliminate the need for multiple worlds and multiple camera renders.

[enablerbr]

Josh do you mean something similar to the way XNA does it? Initlize(),Update(gametime),Draw(gametime) methods.

[Flexman]

Stages sounds like a nice way to do things like Megaparticles which I was having a look at recently.

 

 

 

Plus it would make my cockpit problems go-away if you could reset the camera matrix back to zero for a final stage.

 

camera.Render(1);// draw transparent objects

MatrixReset(camera);

camera.Render(2);// draw cockpit object

camera.EndRender();

[Josh]

Josh do you mean something similar to the way XNA does it? Initlize(),Update(gametime),Draw(gametime) methods.

I don't know how XNA works, but that does not sound like what I am describing.

[Josh]

Stages sounds like a nice way to do things like Megaparticles which I was having a look at recently.

 

Plus it would make my cockpit problems go-away if you could reset the camera matrix back to zero for a final stage.

 

camera.Render(1);// draw transparent objects

MatrixReset(camera);

camera.Render(2);// draw cockpit object

camera.EndRender();

That's pretty clever, but how would you blur the depth buffer of the particle image?

 

I do like that idea a lot. It makes sense to render the shape of the volume first, and then make it look like particles after.

[Guest Red Ocktober]

for Joh...

 

wiki worlds explained with functions

 

use something like this...

 

SetWorld(FG)

RenderWorld()

 

SetWorld(BG)

RenderWorld()

 

 

... i think.

 

good luck...

 

--Mike

[Joh]

For me? I don't need it

Gilmer needs but seem he solve the problem.

 

In the future, I want to implement a feature I am calling "stages". This will allow you to define a stage for an entity or material, and then render a camera one stage at a time, with your own code in between to handle effects.

This seem smart.

[Guest Red Ocktober]

OOOOOOOPPPS!!!

 

sorry... thought you were the original poster asking the question Joh...

 

racing through 3 different forums and paying attention to a render in progress on the other machine...

 

 

--Mike

[Joh]

Don't worry man i understood!