nicolasnuzillard

In jit.gl.slab (I don't want to use jit.gl.pix), in the vertex shader, I have to write this in order to have my texCoords.

    texcoord = vec2(gl_TextureMatrix[0] * gl_MultiTexCoord0);

    vec2 st = texcoord/myUniformResolution;

This means that I have to use a matrix as input to setup the texCoords. Is it possible use jit.gl.slab without any input matrix in order to set the resolution of my shader?

I'd like to do something like "render_bang" -> "jit.gl.slab @render r @dim 800 800" and get automatically normalized coords in the body of my fragment shader.

I want to perform ray marching so I prefer writing it in GLSL.

In jit.gl.slab (I don't want to use jit.gl.pix), in the vertex shader, I have to write this in order to have my texCoords.
void main()
{
	gl_Position = ftransform();
	texcoord = vec2(gl_TextureMatrix[0] * gl_MultiTexCoord0);
}
//fragment
void main()
{
	vec2 st = texcoord/myUniformResolution;
}
This means that I have to use a matrix as input to setup the texCoords. Is it possible use jit.gl.slab without any input matrix in order to set the resolution of my shader?
I'd like to do something like "render_bang" -> "jit.gl.slab @render r @dim 800 800"  and get automatically normalized coords in the body of my fragment shader.
 I want to perform ray marching so I prefer writing it in GLSL.

jit-gl-slab-without-matrix

Hi Nico, yes this is totally possible. As you said, just write the attribute @dim x x and attach the render bang to the input of jit.gl.slab. It will be rendered as if a matrix was attached.

Stange, I posted this because I had to bang a matrix with the right size to make it work. I just tried again and it works.

jit.gl.slab without matrix