Can you provide me a clear set of detailed instructions for using the lygia library inside of max jitter with the use of the jit.gl.slab? It has to be compatible with jitters jxs file format
Certainly! Here are some steps you can follow to use the lygia library inside of Max Jitter with the jit.gl.slab object:

First, make sure you have the lygia library installed on your computer. You can download the latest version of the library from the lygia GitHub page (https://github.com/lygia/lygia).

Once you have the lygia library downloaded, you will need to add it to your Max search path. In Max, go to "File > Show search path" and add the folder where you saved the lygia library to the list of search paths.

Next, you will need to create a jit.gl.slab object in your Max patch. You can do this by either dragging the object from the Max object browser or by typing "jit.gl.slab" into the Max window and hitting return.

To use the lygia library inside the jit.gl.slab object, you will need to include the lygia header files in your jxs file. To do this, add the following lines to the top of your jxs file:

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#include "lygia.h"
using namespace lygia;
Now you can start using the lygia library inside your jxs file. For example, you can create a lygia::Scene object like this:
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lygia::Scene scene;
To draw the scene using the jit.gl.slab object, you will need to override the "draw" method in your jxs file. Inside the "draw" method, you can use the lygia library to draw your scene to the jit.gl.slab object. Here is an example of how you might do this:
Copy code
void draw(t_jit_gl_context *context)
{
    // Set up the OpenGL context for drawing
    jit_gl_set_context(context);

    // Draw the scene using the lygia library
    scene.draw();
}
I hope these steps help you get started using the lygia library with jit.gl.slab in Max Jitter. Let me know if you have any questions or if you need further assistance.




jacob0leone@gmail.com
How can I modify this code to reflect those changes
<jittershader name="default">
	<description>Default Slab </description>
	<param name="scale" type="float" default="1.0" />
	<param name="tex0" type="int" default="0" />
	<param name="modelViewProjectionMatrix" type="mat4" state="MODELVIEW_PROJECTION_MATRIX" />
	<param name="textureMatrix0" type="mat4" state="TEXTURE0_MATRIX" />
	<param name="position" type="vec3" state="POSITION" />
	<param name="texcoord" type="vec2" state="TEXCOORD" />
	<param name="color" type="vec4" state="COLOR" />
	<language name="glsl" version="1.5">
		<bind param="scale" program="fp" />
		<bind param="tex0" program="fp" />
		<bind param="modelViewProjectionMatrix" program="vp" />
		<bind param="textureMatrix0" program="vp" />
		<bind param="position" program="vp" />
		<bind param="texcoord" program="vp" />
		<bind param="color" program="vp" />
		<program name="vp" type="vertex"  >

		#include "lygia.h"
		using namespace lygia;

		
		<![CDATA[
			#version 330 core

			in vec3 position;
			in vec2 texcoord;
			in vec4 color;
			out jit_PerVertex {
				vec2 texcoord;
				vec4 color;
			} jit_out;
			uniform mat4 modelViewProjectionMatrix;
			uniform mat4 textureMatrix0;

			void main(void) {
				gl_Position = modelViewProjectionMatrix*vec4(position, 1.);
				jit_out.texcoord = vec2(textureMatrix0*vec4(texcoord, 0., 1.));
				jit_out.color = color;
			}
		]]>
		</program>

		<program name="fp" type="fragment"  >
		<![CDATA[
			#version 330 core

			in jit_PerVertex {
				vec2 texcoord;
				vec4 color;
			} jit_in;
			layout (location = 0) out vec4 outColor;

			uniform sampler2DRect tex0;
			uniform float scale;
			void main(void) {
				outColor = texture(tex0, jit_in.texcoord) * jit_in.color * scale;
			}
		]]>
		</program>
	</language>
</jittershader>
To modify the provided code to use the lygia library inside a jit.gl.slab object, you will need to include the lygia header files at the top of your jxs file and then use the lygia library inside the "vp" (vertex program) and "fp" (fragment program) sections.

Here is how you could modify the provided code to include the lygia header files and use the lygia::Scene object inside the "vp" and "fp" programs:

Copy code
<jittershader name="default">
	<description>Default Slab </description>
	<param name="scale" type="float" default="1.0" />
	<param name="tex0" type="int" default="0" />
	<param name="modelViewProjectionMatrix" type="mat4" state="MODELVIEW_PROJECTION_MATRIX" />
	<param name="textureMatrix0" type="mat4" state="TEXTURE0_MATRIX" />
	<param name="position" type="vec3" state="POSITION" />
	<param name="texcoord" type="vec2" state="TEXCOORD" />
	<param name="color" type="vec4" state="COLOR" />
	<language name="glsl" version="1.5">
		<bind param="scale" program="fp" />
		<bind param="tex0" program="fp" />
		<bind param="modelViewProjectionMatrix" program="vp" />
		<bind param="textureMatrix0" program="vp" />
		<bind param="position" program="vp" />
		<bind param="texcoord" program="vp" />
		<bind param="color" program="vp" />
		<program name="vp" type="vertex"  >

		#include "lygia.h"
		using namespace lygia;

		lygia::Scene scene;  // Declare a lygia::Scene object

		<![CDATA[
			#version 330 core

			in vec3 position;
			in vec2 texcoord;
			in vec4 color;
			out jit_PerVertex {
				vec2 texcoord;
				vec4 color;
			} jit_out;
			uniform mat4 modelViewProjectionMatrix;
			uniform mat4 textureMatrix0;

			void main(void) {
				gl_Position = modelViewProjectionMatrix*vec4(position, 1.);
				jit_out.texcoord = vec2(textureMatrix0*vec4(texcoord, 0., 1.));
				jit_out.color = color;
			}
		]]>
		</program>

		<program name="fp" type="fragment"  >
		<![CDATA[
			#version 330 core

			in jit_PerVertex {
				vec2 texcoord;
				vec4 color;
			} jit_in;
			layout (location = 0) out vec4 outColor;

			



jacob0leone@gmail.com
Sorry I didn't catch that. This is what I have 
<program name="vp" type="vertex"  >

		#include "lygia.h"
		using namespace lygia;

		lygia::Scene scene;  // Declare a lygia::Scene object
		
		<![CDATA[
			#version 330 core

			in vec3 position;
			in vec2 texcoord;
			out jit_PerVertex {
				vec2 texcoord;
			} jit_out;
			uniform mat4 modelViewProjectionMatrix;
			uniform mat4 textureMatrix0;

			void main(void) {
				gl_Position = modelViewProjectionMatrix*vec4(position, 1.);
				jit_out.texcoord = vec2(textureMatrix0*vec4(texcoord, 0., 1.));
			}
		]]>
		</program>

		<program name="fp" type="fragment"  >
		<![CDATA[
			#version 330 core

			in jit_PerVertex {
				vec2 texcoord;
				vec4 color;
			} jit_in;
			layout (location = 0) out vec4 outColor;

			uniform sampler2DRect tex0;
			void main(void) {
				outColor = vec4(sin(0.5)*50, 0., 0., 1.);
			}
		]]>
		</program>
	</language>
</jittershader>
To use the lygia::Scene object inside the "vp" program, you will need to update the "main" function to draw the scene using the lygia library. Here is an example of how you could do this:

Copy code
void main(void) {
    // Set up the viewport and projection matrix
    scene.set_viewport(0, 0, 1920, 1080);
    scene.set_projection_matrix(45.0f, 1920.0f / 1080.0f, 0.1f, 100.0f);

    // Draw the scene
    scene.draw();
}
You can then use the lygia::Scene object inside the "fp" program to sample from the rendered scene and output the resulting color to the fragment output. Here is an example of how you could do this:

Copy code
void main(void) {
    // Sample from the rendered scene and output the resulting color
    outColor = scene.sample(texcoord);
}
I hope this helps! Let me know if you have any questions or if you need further assistance.




jacob0leone@gmail.com
Like this? 
void main(void)
			{
				// Set up the viewport and projection matrix
		    scene.set_viewport(0, 0, 1920, 1080);
		    scene.set_projection_matrix(45.0f, 1920.0f / 1080.0f, 0.1f, 100.0f);

		    // Draw the scene
		    scene.draw();
				// Sample from the rendered scene and output the resulting color
				outColor = scene.sample(texcoord);
			}
Yes, that looks correct! You can use the lygia::Scene object in the "vp" program to set the viewport and projection matrix, and then use the "draw" method to render the scene. In the "fp" program, you can then use the "sample" method of the lygia::Scene object to sample from the rendered scene and output the resulting color to the fragment output.

Keep in mind that you will need to add objects to the scene and specify their properties (e.g., position, material, etc.) in order to see something rendered in the jit.gl.slab object. The lygia library provides a number of methods and classes that you can use to do this, such as the "add" method of the lygia::Scene object, the lygia::Object class, and the lygia::Material class.

I hope this helps! Let me know if you have any questions or if you need further assistance.




jacob0leone@gmail.com
Can you write the whole thing in a code box so that it is clear?
<program name="vp" type="vertex"  >

		#include "lygia.h"
		using namespace lygia;

		lygia::Scene scene;  // Declare a lygia::Scene object

		<![CDATA[
			#version 330 core

			in vec3 position;
			in vec2 texcoord;
			out jit_PerVertex {
				vec2 texcoord;
			} jit_out;
			uniform mat4 modelViewProjectionMatrix;
			uniform mat4 textureMatrix0;

			void main(void) {
				gl_Position = modelViewProjectionMatrix*vec4(position, 1.);
				jit_out.texcoord = vec2(textureMatrix0*vec4(texcoord, 0., 1.));
				// Set up the viewport and projection matrix
		    scene.set_viewport(0, 0, 1920, 1080);
		    scene.set_projection_matrix(45.0f, 1920.0f / 1080.0f, 0.1f, 100.0f);
			}
		]]>
		</program>

		<program name="fp" type="fragment"  >
		<![CDATA[
			#version 330 core

			in jit_PerVertex {
				vec2 texcoord;
				vec4 color;
			} jit_in;
			layout (location = 0) out vec4 outColor;

			uniform sampler2DRect tex0;
			void main(void)
			{
				

		    // Draw the scene
		    scene.draw();
				// Sample from the rendered scene and output the resulting color
				outColor = scene.sample(texcoord);
			}
		]]>
		</program>
	</language>
</jittershader>
Here is the modified code in a code block:

Copy code
<jittershader name="default">
	<description>Default Slab </description>
	<param name="scale" type="float" default="1.0" />
	<param name="tex0" type="int" default="0" />
	<param name="modelViewProjectionMatrix" type="mat4" state="MODELVIEW_PROJECTION_MATRIX" />
	<param name="textureMatrix0" type="mat4" state="TEXTURE0_MATRIX" />
	<param name="position" type="vec3" state="POSITION" />
	<param name="texcoord" type="vec2" state="TEXCOORD" />
	<param name="color" type="vec4" state="COLOR" />
	<language name="glsl" version="1.5">
		<bind param="scale" program="fp" />
		<bind param="tex0" program="fp" />
		<bind param="modelViewProjectionMatrix" program="vp" />
		<bind param="textureMatrix0" program="vp" />
		<bind param="position" program="vp" />
		<bind param="texcoord" program="vp" />
		<bind param="color" program="vp" />
		<program name="vp" type="vertex"  >

		#include "lygia.h"
		using namespace lygia;

		lygia::Scene scene;  // Declare a lygia::Scene object

		<![CDATA[
			#version 330 core

			in vec3 position;
			in vec2 texcoord;
			out jit_PerVertex {



jacob0leone@gmail.com
Can you do that again but you don't have to include the bindings
Certainly! Here is the modified code with the bindings and the "color" parameter removed:

Copy code
<jittershader name="default">
	<description>Default Slab </description>
	<param name="scale" type="float" default="1.0" />
	<param name="tex0" type="int" default="0" />
	<param name="modelViewProjectionMatrix" type="mat4" state="MODELVIEW_PROJECTION_MATRIX" />
	<param name="textureMatrix0" type="mat4" state="TEXTURE0_MATRIX" />
	<param name="position" type="vec3" state="POSITION" />
	<param name="texcoord" type="vec2" state="TEXCOORD" />
	<language name="glsl" version="1.5">
		<program name="vp" type="vertex"  >

		#include "lygia.h"
		using namespace lygia;

		lygia::Scene scene;  // Declare a lygia::Scene object

		<![CDATA[
			#version 330 core

			in vec3 position;
			in vec2 texcoord;
			out jit_PerVertex {
				vec2 texcoord;
			} jit_out;
			uniform mat4 modelViewProjectionMatrix;
			uniform mat4 textureMatrix0;

			void main(void) {
				gl_Position = modelViewProjectionMatrix*vec4(position, 1.);
				jit_out.texcoord = vec2(textureMatrix0*vec4(texcoord, 0., 1.));
				// Set up the viewport and projection matrix
		    scene.set_viewport(0, 0, 1920, 1080);
		    scene.set_projection_matrix(45.0f, 1920.0f / 1080.0f, 0.1f, 100.0f);
			}
		]]>



jacob0leone@gmail.com
What does the fragment program look like in a codebox?
Here is the fragment program in a code block:

Copy code
		<program name="fp" type="fragment"  >
		<![CDATA[
			#version 330 core

			in jit_PerVertex {
				vec2 texcoord;
			} jit_in;
			layout (location = 0) out vec4 outColor;

			uniform sampler2DRect tex0;
			void main(void)
			{
				// Draw the scene
		    scene.draw();
				// Sample from the rendered scene and output the resulting color
				outColor = scene.sample(texcoord);
			}
		]]>
		</program>
	</language>
</jittershader>
I hope this helps! Let me know if you have any questions or if you need further assistance.




jacob0leone@gmail.com
What am I missing?
jit.gl.slab: GLSL shader error in program vp of file C:/Users/Jake/Desktop/lygiaTest.jxs:
0(15) : error C1503: undefined variable "scene"
0(16) : error C1503: undefined variable "scene"
It looks like you are trying to use the lygia::Scene object in the "vp" program, but you have not declared it in that program. In order to use the lygia::Scene object, you need to declare it at the top of the "vp" program like this:

Copy code
#include "lygia.h"
using namespace lygia;

lygia::Scene scene;  // Declare a lygia::Scene object

...
This will allow you to use the lygia::Scene object in the "vp" program.

I hope this helps! Let me know if you have any questions or if you need further assistance.




jacob0leone@gmail.com
I have it in there already:
<program name="vp" type="vertex"  >

		#include "lygia.h"
		using namespace lygia;

		lygia::Scene scene;  // Declare a lygia::Scene object

Any other idea? am I missing it from the fragment program? Is there another snippet I am missing?
It looks like you have correctly declared the lygia::Scene object in the "vp" program. In order to use the "sample" method of the lygia::Scene object in the "fp" program, you will need to pass the texture coordinate from the "vp" program to the "fp" program.

You can do this by adding the texture coordinate to the "jit_PerVertex" struct in the "vp" program, like this:

Copy code
out jit_PerVertex {
	vec2 texcoord;  // Add the texture coordinate here
} jit_out;
Then, you can pass the texture coordinate to the "fp" program by assigning it to the "jit_out.texcoord" variable in the "vp" program, like this:

Copy code
jit_out.texcoord = vec2(textureMatrix0*vec4(texcoord, 0., 1.));
In the "fp" program, you will need to modify the "jit_PerVertex" struct to include the texture coordinate, like this:

Copy code
in jit_PerVertex {
	vec2 texcoord;  // Add the texture coordinate here
} jit_in;
Then, you can use the "texcoord" variable in the "fp" program to sample from the rendered scene, like this:

Copy code
outColor = scene.sample(texcoord);  // Use the "texcoord" variable to sample from the rendered scene
I hope this helps! Let me know if you have any questions or if you need further assistance.




jacob0leone@gmail.com
<program name="vp" type="vertex"  >

		#include "lygia.h"
		using namespace lygia;

		lygia::Scene scene;  // Declare a lygia::Scene object

		<![CDATA[
			#version 330 core

			in vec3 position;
			in vec2 texcoord;
			out jit_PerVertex {
				vec2 texcoord;
			} jit_out;
			uniform mat4 modelViewProjectionMatrix;
			uniform mat4 textureMatrix0;

			void main(void) {
				gl_Position = modelViewProjectionMatrix*vec4(position, 1.);
				jit_out.texcoord = vec2(textureMatrix0*vec4(texcoord, 0., 1.));
				// Set up the viewport and projection matrix
		    scene.set_viewport(0, 0, 1920, 1080);
		    scene.set_projection_matrix(45.0f, 1920.0f / 1080.0f, 0.1f, 100.0f);
			}
		]]>
		</program>

		<program name="fp" type="fragment"  >
		<![CDATA[
			#version 330 core

			in jit_PerVertex {
				vec2 texcoord;
			} jit_in;
			layout (location = 0) out vec4 outColor;

			uniform sampler2DRect tex0;
			void main(void)
			{
				// Draw the scene
		    scene.draw();
				// Sample from the rendered scene and output the resulting color
				outColor = scene.sample(texcoord);
			}
		]]>
		</program>
	</language>
</jittershader>

returns:

jit.gl.slab: GLSL shader error in program vp of file C:/Users/Jake/Desktop/lygiaTest.jxs:
0(15) : error C1503: undefined variable "scene"
0(16) : error C1503: undefined variable "scene"
It looks like you are trying to use the lygia::Scene object in the "vp" program, but you have not declared it in that program. In order to use the lygia::Scene object, you need to declare it at the top of the "vp" program like this:

Copy code
#include "lygia.h"
using namespace lygia;

lygia::Scene scene;  // Declare a lygia::Scene object

...
This will allow you to use the lygia::Scene object in the "vp" program.

I hope this helps! Let me know if you have any questions or if you need further assistance.




jacob0leone@gmail.com
So like this instead:
#include "lygia.h"
		using namespace lygia;
		lygia::Scene scene;  // Declare a lygia::Scene object
		<program name="vp" type="vertex"  >

?
No, you should include the declaration of the lygia::Scene object within the "vp" program like this:

Copy code
<program name="vp" type="vertex"  >
	#include "lygia.h"
	using namespace lygia;
	lygia::Scene scene;  // Declare a lygia::Scene object

	<![CDATA[
		#version 330 core

		in vec3 position;
		in vec2 texcoord;
		out jit_PerVertex {
			vec2 texcoord;
		} jit_out;
		uniform mat4 modelViewProjectionMatrix;
		uniform mat4 textureMatrix0;

		void main(void) {
			gl_Position = modelViewProjectionMatrix*vec4(position, 1.);
			jit_out.texcoord = vec2(textureMatrix0*vec4(texcoord, 0., 1.));
			// Set up the viewport and projection matrix
	    scene.set_viewport(0, 0, 1920, 1080);
	    scene.set_projection_matrix(45.0f, 1920.0f / 1080.0f, 0.1f, 100.0f);
		}
	]]>
	</program>
I hope this helps! Let me know if you have any questions or if you need further assistance.




jacob0leone@gmail.com
	<program name="vp" type="vertex"  >
	#include "lygia.h"
	using namespace lygia;
	lygia::Scene scene;  // Declare a lygia::Scene object

	<![CDATA[
		#version 330 core

		in vec3 position;
		in vec2 texcoord;
		out jit_PerVertex {
			vec2 texcoord;
		} jit_out;
		uniform mat4 modelViewProjectionMatrix;
		uniform mat4 textureMatrix0;

		void main(void) {
			gl_Position = modelViewProjectionMatrix*vec4(position, 1.);
			jit_out.texcoord = vec2(textureMatrix0*vec4(texcoord, 0., 1.));
			// Set up the viewport and projection matrix
	    scene.set_viewport(0, 0, 1920, 1080);
	    scene.set_projection_matrix(45.0f, 1920.0f / 1080.0f, 0.1f, 100.0f);
		}
	]]>
		</program>

jit.gl.slab: GLSL shader error in program vp of file C:/Users/Jake/Desktop/lygiaTest.jxs:
0(15) : error C1503: undefined variable "scene"
0(16) : error C1503: undefined variable "scene"
It looks like the declaration of the lygia::Scene object is still not being recognized in the "vp" program. This could be due to an issue with the way the declaration is written or an issue with the way the program is being compiled.

One thing you could try is moving the declaration of the lygia::Scene object to the top of the "vp" program, outside of the <![CDATA[ block, like this:

Copy code
<program name="vp" type="vertex"  >
	#include "lygia.h"
	using namespace lygia;
	lygia::Scene scene;  // Declare a lygia::Scene object

	#version 330 core

	in vec3 position;
	in vec2 texcoord;
	out jit_PerVertex {
		vec2 texcoord;
	} jit_out;
	uniform mat4 modelViewProjectionMatrix;
	uniform mat4 textureMatrix0;

	void main(void) {
		gl_Position = modelViewProjectionMatrix*vec4(position, 1.);
		jit_out.texcoord = vec2(textureMatrix0*vec4(texcoord, 0., 1.));
		// Set up the viewport and projection matrix
    scene.set_viewport(0, 0, 1920, 1080);
    scene.set_projection_matrix(45.0f, 1920.0f / 1080.0f, 0.1f, 100.0f);
	}
</program>
This may help resolve the issue you are experiencing.

I hope this helps! Let me know if you have any questions or if you need further assistance.




jacob0leone@gmail.com
jit.gl.slab: jit.gl.shader: no source code or filename found for vertex program!
It looks like there is an issue with the way the "vp" program is being defined in your jxs file. The <![CDATA[ block should not be used in this case, as it is used to include raw character data in an XML file. Instead, you can simply include the source code for the program directly within the <program> element, like this:

Copy code
<program name="vp" type="vertex"  >
	#include "lygia.h"
	using namespace lygia;
	lygia::Scene scene;  // Declare a lygia::Scene object

	#version 330 core

	in vec3 position;
	in vec2 texcoord;
	out jit_PerVertex {
		vec2 texcoord;
	} jit_out;
	uniform mat4 modelViewProjectionMatrix;
	uniform mat4 textureMatrix0;

	void main(void) {
		gl_Position = modelViewProjectionMatrix*vec4(position, 1.);
		jit_out.texcoord = vec2(textureMatrix0*vec4(texcoord, 0., 1.));
		// Set up the viewport and projection matrix
    scene.set_viewport(0, 0, 1920, 1080);
    scene.set_projection_matrix(45.0f, 1920.0f / 1080.0f, 0.1f, 100.0f);
	}
</program>
I hope this helps! Let me know if you have any questions or if you need further assistance.




jacob0leone@gmail.com
jit.gl.slab: jit.gl.shader: no source code or filename found for vertex program!
I apologize for the confusion. It looks like there is still an issue with the way the "vp" program is being defined in your jxs file.

In order to include the source code for a GLSL program within a jxs file, you will need to wrap the source code within a <![CDATA[ block. This is necessary because the source code may contain characters that are not allowed within an XML file, such as < and >.

Here is an example of how you can include the source code for the "vp" program in your jxs file:

Copy code
<program name="vp" type="vertex"  >
	<![CDATA[
		#include "lygia.h"
		using namespace lygia;
		lygia::Scene scene;  // Declare a lygia::Scene object

		#version 330 core

		in vec3 position;
		in vec2 texcoord;
		out jit_PerVertex {
			vec2 texcoord;
		} jit_out;
		uniform mat4 modelViewProjectionMatrix;
		uniform mat4 textureMatrix0;

		void main(void) {
			gl_Position = modelViewProjectionMatrix*vec4(position, 1.);
			jit_out.texcoord = vec2(textureMatrix0*vec4(texcoord, 0., 1.));
			// Set up the viewport and projection matrix
	    scene.set_viewport(0, 0, 1920, 1080);
	    scene.set_projection_matrix(45.0f, 1920.0f / 1080.0f, 0.1f, 100.0f);
		}
	]]>
</program>
I hope this helps! Let me know if you have any questions or if you need further assistance.




jacob0leone@gmail.com
jit.gl.slab: GLSL shader error in program vp of file C:/Users/Jake/Desktop/lygiaTest.jxs:
0(3) : error C7529: OpenGL does not allow #include directives
0(4) : error C0109: Can't open include file "lygia.h"
0(4) : error C0000: syntax error, unexpected reserved word "namespace", expecting "::" at token "namespace"
0(5) : error C0000: syntax error, unexpected identifier, expecting template identifier or type identifier at token "Scene"
0(19) : error C1503: undefined variable "scene"
0(20) : error C1503: undefined variable "scene"
It looks like you're trying to include the lygia.h header file in the vertex shader, which is not allowed in GLSL.

Instead, you'll need to define the variables and functions you need in the vertex shader, or define them as uniforms that can be passed in from the host program. You can also try moving the #include and using namespace statements to the top of the file before the <jittershader> element.

Here's an example of how you might do this:

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<jittershader name="default">
	<description>Default Slab </description>
	<param name="scale" type="float" default="1.0" />
	<param name="tex0" type="int" default="0" />
	<param name="modelViewProjectionMatrix" type="mat4" state="MODELVIEW_PROJECTION_MATRIX" />
	<param name="textureMatrix0" type="mat4" state="TEXTURE0_MATRIX" />
	<param name="position" type="vec3" state="POSITION" />
	<param name="texcoord" type="vec2" state="TEXCOORD" />
	<param name="color" type="vec4" state="COLOR" />
	<language name="glsl" version="1.5">
		<bind param="scale" program="fp" />
		<bind param="tex0" program="fp" />
		<bind param="modelViewProjectionMatrix" program="vp" />
		<bind param="textureMatrix0" program="vp" />
		<bind param="position" program="vp" />
		<bind param="texcoord" program="vp" />
		<bind param="color" program="vp" />
		<program name="vp" type="vertex"  >
		<![CDATA[
			#version 330 core

			in vec3 position;
			in vec2 texcoord;
			out jit_PerVertex {
				vec2 texcoord;
			} jit_out;
			uniform mat4 modelViewProjectionMatrix;
			uniform mat4 textureMatrix0;

			void main(void) {
				gl_Position = modelViewProjectionMatrix*vec4(position, 1.);
				jit_out.texcoord = vec2(textureMatrix0*vec4(texcoord, 0., 1.));
			}
		]]>
		</program>

		<program name="fp" type="fragment"  >
		<![CDATA[
			#version 330 core

			in jit_PerVertex {
				vec2 texcoord;
			} jit_in;
			layout (location = 0) out vec4 out



jacob0leone@gmail.com
Here is an example of code that worked
<jittershader name="default">
	<description>Default Slab </description>
	<param name="scale" type="float" default="1.0" />
	<param name="tex0" type="int" default="0" />
	<param name="modelViewProjectionMatrix" type="mat4" state="MODELVIEW_PROJECTION_MATRIX" />
	<param name="textureMatrix0" type="mat4" state="TEXTURE0_MATRIX" />
	<param name="position" type="vec3" state="POSITION" />
	<param name="texcoord" type="vec2" state="TEXCOORD" />
	<language name="glsl" version="1.5">
		<bind param="scale" program="fp" />
		<bind param="tex0" program="fp" />
		<bind param="modelViewProjectionMatrix" program="vp" />
		<bind param="textureMatrix0" program="vp" />
		<bind param="position" program="vp" />
		<bind param="texcoord" program="vp" />

        <include source="rotate2d.glsl" program="fp" />

		<program name="vp" type="vertex"  >
		<![CDATA[
			#version 330 core
			
			in vec3 position;
			in vec2 texcoord;
			out jit_PerVertex {
				vec2 texcoord;
			} jit_out;
			uniform mat4 modelViewProjectionMatrix;
			uniform mat4 textureMatrix0;
			
			void main(void) {
				gl_Position = modelViewProjectionMatrix*vec4(position, 1.);
				jit_out.texcoord = vec2(textureMatrix0*vec4(texcoord, 0., 1.));
			}
		]]>
		</program>
		
		<program name="fp" type="fragment"  >
		<![CDATA[
			#version 330 core
			
			in jit_PerVertex {
				vec2 texcoord;
			} jit_in;
			layout (location = 0) out vec4 outColor;
			
			uniform sampler2D tex0;
			uniform float scale;
			void main(void) {
                vec2 rotaCoords = rotate2d(0.3)*jit_in.texcoord;
				outColor = texture(tex0, rotaCoords) * scale;
			}
		]]>
		</program>
	</language>
</jittershader>

You should modify our program with this insight. write in a code block
Sure, here is the modified version of your fragment program using the rotate2d function from the included rotate2d.glsl file:

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#version 330 core

in jit_PerVertex {
	vec2 texcoord;
} jit_in;
layout (location = 0) out vec4 outColor;

uniform sampler2DRect tex0;

void main(void)
{
	vec2 rotaCoords = rotate2d(0.3)*jit_in.texcoord;
	outColor = scene.sample(rotaCoords);
}
Note that you will need to include the rotate2d.glsl file in your fragment program as well, like this:

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#include "lygia.h"
using namespace lygia;
lygia::Scene scene;  // Declare a lygia::Scene object

<program name="vp" type="vertex"  >

<![CDATA[
	#version 330 core

	in vec3 position;
	in vec2 texcoord;
	out jit_PerVertex {
		vec2 texcoord;
	} jit_out;
	uniform mat4 modelViewProjectionMatrix;
	uniform mat4 textureMatrix0;

	void main(void) {
		gl_Position = modelViewProjectionMatrix*vec4(position, 1.);
		jit_out.texcoord = vec2(textureMatrix0*vec4(texcoord, 0., 1.));
		// Set up the viewport and projection matrix
    scene.set_viewport(0, 0, 1920, 1080);
    scene.set_projection_matrix(45.0f, 1920.0f / 1080.0f, 0.1f, 100.0f);
	}
]]>
	</program>

<program name="fp" type="fragment"  >
<![CDATA[
	#version 330 core

	in jit_PerVertex {
		vec2 texcoord;
	} jit_in;
	layout (location = 0) out vec4 outColor;

	uniform sampler2DRect tex0;
	
	#include "rotate2d.glsl"

	void main(void)
	{
		vec2 rotaCoords = rotate2d(0.3)*jit_in.texcoord;
		outColor = scene.sample(rotaCoords);
	}
]]>
	</program>
</language>
</jittershader>



jacob0leone@gmail.com
jit.gl.slab: GLSL shader error in program vp of file C:/Users/Jake/Desktop/lygiaTest.jxs:
0(15) : error C1503: undefined variable "scene"
0(16) : error C1503: undefined variable "scene"
Here is the vertex program with the #include and using namespace statements removed:

Copy code
<program name="vp" type="vertex"  >
	<![CDATA[
		#version 330 core

		in vec3 position;
		in vec2 texcoord;
		out jit_PerVertex {
			vec2 texcoord;
		} jit_out;
		uniform mat4 modelViewProjectionMatrix;
		uniform mat4 textureMatrix0;

		void main(void) {
			gl_Position = modelViewProjectionMatrix*vec4(position, 1.);
			jit_out.texcoord = vec2(textureMatrix0*vec4(texcoord, 0., 1.));
			// Set up the viewport and projection matrix
	    scene.set_viewport(0, 0, 1920, 1080);
	    scene.set_projection_matrix(45.0f, 1920.0f / 1080.0f, 0.1f, 100.0f);
		}
	]]>
</program>
If you are still getting an error after making this change, then the problem may lie with how you are declaring the scene object. Make sure that it is declared outside of any function, like this:

Copy code
lygia::Scene scene;  // Declare a lygia::Scene object
If this still doesn't solve the issue, please let me know and I'll try to help further.




jacob0leone@gmail.com
I was informed that max can not resolve #include statements in their shader programs.  instead
        <include source="rotate2d.glsl" program="fp" />

is used to call on individual functions within lygia
It looks like you are trying to use the #include directive to include the "lygia.h" header file, but this directive is not allowed in GLSL.

In GLSL, you can only use the #include directive to include other GLSL shader files that contain code to be used in the current shader. You cannot use it to include external header files like "lygia.h".

To use functions or data from the "lygia.h" file, you will need to make sure that the definitions for those functions and data are available in the current shader. One way to do this is to copy the necessary code from "lygia.h" directly into your shader. Another option is to use the #define directive to define any macros or constants that you need in the shader, and then use the #include directive to include a GLSL file that contains the function definitions that you need.

For example, you could create a file called "lygia_functions.glsl" that contains the function definitions that you need, and then use the #include directive to include this file in your shader:

Copy code
#include "lygia_functions.glsl"

// Use the functions and data from the "lygia.h" file
void main() {
    ...
}



jacob0leone@gmail.com
it looks like that's because those files, like circle.glsl, have "include" statements in them, which are illegal in Max glsl
you should modify those files by removing the include statements and manually include in the jxs file all the required files
this is a bit a rabbit hole, because some of included files will have themselves include statements in, which themselves have include statements
I started to include all the files and delete "include" statements when necessary in the glsl, but keep getting the include error, so i'ts not really a viable path
I see what you mean. Including all the required files manually can be a tedious process, especially if there are many files with nested includes. One way to avoid this issue would be to preprocess the included files into a single file before using them in your jxs file. This can be done using a tool such as cpp (the C preprocessor) which is commonly used to process #include statements in C/C++ code. You can then include the preprocessed file in your jxs file instead of the individual files with include statements.

For example, you could use the following command to preprocess the included files into a single file:

Copy code
cpp -I path/to/include/files -P input.glsl output.glsl
This will remove all the #include statements and substitute the contents of the included files into output.glsl. You can then use output.glsl in your jxs file instead of input.glsl.

Alternatively, you could write a script to automate the process of preprocessing the included files. This would make it easier to update your jxs file when the included files change. You could even integrate this script into your build process to ensure that the preprocessed files are always up to date.




jacob0leone@gmail.com
From one of the devs:
yeah define guards should work fine. I've considered adding a feature to shader/slab that allows users to set a list of symbols to be passed to the shader as defines. does that seem useful?
there's a reasonable feature request here in supporting glsl #include syntax jxs shaders, feel free to drop a note to support

I think it may be better to wait to see if they update max to make this process easier. I don't want to get too hacky with it especially if it modifies the lygia source or requires a more complex workflow. What do you think?
It seems like it might be more efficient to wait for the development team to implement a feature that allows users to set a list of symbols to be passed to the shader as defines. This would allow you to include the necessary files and avoid any potential issues with manually modifying the source code and potentially introducing errors.

If you would like to request this feature, you can contact the development team through the support channel. It might also be helpful to provide a clear and concise description of the issue and the requested solution. This will help the development team understand your needs and potentially prioritize the implementation of this feature.




jacob0leone@gmail.com
Do you think sharing this log would be useful to them?
It might be helpful for the developers to see the log of the error messages you are receiving when attempting to include the lygia files in your jitter shader. The log will provide them with more information about what is causing the errors and may help them identify a solution. It could also be helpful for them to see the specific lines of code that are causing the errors, as well as the structure of the jitter shader you are working on.




jacob0leone@gmail.com
Where can I find the appropriate channel to send this to the jitter devs?
You can ask the Max developers directly by posting to the Cycling74 forums or by submitting a support request to the Max Support Team. You can find more information about these options on the Cycling74 website: https://cycling74.com/support/




jacob0leone@gmail.com
Whats the best way to share this log?
The best way to share the log with the Jitter developers would be to submit a bug report or feature request to the support team. You can do this by visiting the support page on the Max website and following the instructions there. Alternatively, you can try posting your question or issue on the Jitter forum, where the developers and other users may be able to provide assistance or guidance.




jacob0leone@gmail.com
But how do I take this log that you and I have been conversing in and share that with them?
You can copy and paste the log of our conversation into an email or a message and send it to the Jitter developers. Alternatively, you could save the log to a text file and attach it to the email or message.




jacob0leone@gmail.com
Can I download a pdf of our conversation?
I'm sorry, but I am unable to provide a PDF of our conversation. One option you could try is to copy and paste the conversation into a text editor and then save the file as a PDF. Alternatively, you could take screenshots of the conversation and compile them into a PDF document. Is there anything else I can help with?