mikeman22@hotmail.com

I need to render a few opengl objects to different render objects and then view them all in the same window. I want to have erase color control of each opengl object separately. Can someone please show me how to do this.

I need to render a few opengl objects to different render objects and then view them all in the same window.  I want to have erase color control of each opengl object separately.  Can someone please show me how to do this.  

render-erase-color

Render to texture. Search the forums about this subject, all will be

revealed ... (you can render each object to a texture with a

different background color by drawing a quad first on each draw pass).

On Sat, Mar 22, 2008 at 7:03 PM, Mike wrote:

> I need to render a few opengl objects to different render objects and then view them all in the same window. I want to have erase color control of each opengl object separately. Can someone please show me how to do this.

Render to texture.  Search the forums about this subject, all will be
revealed ...  (you can render each object to a texture with a
different background color by drawing a quad first on each draw pass).
wes

On Sat, Mar 22, 2008 at 7:03 PM, Mike  wrote:
>
>  I need to render a few opengl objects to different render objects and then view them all in the same window.  I want to have erase color control of each opengl object separately.  Can someone please show me how to do this.
>
>  Thanx
>
>
>
>


Ah I see what your saying. However i was wanting to take advantage of the delayed erase time in the renderer. I like the effect. Is there a way of using this separately on each grideshape?

Ah I see what your saying.  However i was wanting to take advantage of the delayed erase time in the renderer.  I like the effect.  Is there a way of using this separately on each grideshape?


You can use a shader in a feedback network to accomplish the same

effect. I've made a shader called co.accum.jxs that does this.

You can use a shader in a feedback network to accomplish the same
effect.  I've made a shader called co.accum.jxs that does this.
Here's a patch and shader.

BTW, in the patch I posted, you don't even need the background quads.

You can just use the erase_color shader parameter to set the

BTW, in the patch I posted, you don't even need the background quads.
You can just use the erase_color shader parameter to set the
background color.

Im trying to use your shader but am having some issues with the code.

can you check it for me and tell me what Im missing. Below is the code and the error message i get from max window.

    Shader to emulate render erase color

jit.gl.render: building GL on window "test"...

ERROR: 0:1: '+' : syntax error parse error

ERROR: Parser found no code to compile in source strings.

• error: jit.gl.shader: GLSL program failed to compile.

ERROR: 0:1: 'kSO' : syntax error parse error

Im trying to use your shader but am having some issues with the code.  

jit.gl.render: building GL on window "test"...
• error: -- START GLSL INFO LOG:  --
ERROR: 0:1: '+' : syntax error parse error
ERROR: Parser found no code to compile in source strings.
• error: -- END GLSL INFO LOG:  --
• error: jit.gl.shader: GLSL program failed to compile.
• error: -- START GLSL INFO LOG:  --
ERROR: 0:1: 'kSO' : syntax error parse error
ERROR: Parser found no code to compile in source strings.
• error: -- END GLSL INFO LOG:  --
• error: jit.gl.shader: GLSL program failed to compile.


here is the error message and the attached shader file

sorry but your attachment is not there. Can you send it to me again please.

Hey Wes, 
sorry but your attachment is not there.  Can you send it to me again please.  

https://cycling74.com/pipermail/jitter/2008-March/014225.html

https://cycling74.com/pipermail/jitter/2008-March/014268.html

https://cycling74.com/pipermail/jitter/2008-March/014225.html
and
https://cycling74.com/pipermail/jitter/2008-March/014268.html


When I try to use your co.accum.jsx shader I get this message.

error: jit_xml_document: error reading file at byte offset 1079 / no element found

error: jit.gl.shader: error reading shader xml file 'C:/Program Files/Cycling '74/MaxMSP 4.6/Cycling '74/jitter-shaders/composite/co.accum.jxs'

Ive attached a patch so you can show me how to use it.

When I try to use your co.accum.jsx shader I get this message. 

error: jit_xml_document: error reading file at byte offset 1079 / no element found
• 
error: line (44): 
• 
error: jit.gl.shader: error reading shader xml file 'C:/Program Files/Cycling '74/MaxMSP 4.6/Cycling '74/jitter-shaders/composite/co.accum.jxs'

The trouble seems to lay in the mesh. How can I get what is outputted from the mesh to a videoplane so that I can put a shader on it?

The trouble seems to lay in the mesh.  How can I get what is outputted from the mesh to a videoplane so that I can put a shader on it?


please see the Scene Process jitter recipe. all the answers are there.

please see the Scene Process jitter recipe.  all the answers are there.

Cool. Just wondering if there is a sketch drawing command like the drawobject that can be used to capture jit.gl.mesh?

Cool.  Just wondering if there is a sketch drawing command like the drawobject that can be used to capture jit.gl.mesh?


Render erase color