Rendering points as circles instead of squares

[heethesh]

Point cloud rendered as circles looks nicer than the current squares!

If anyone wants to try it out, add these lines:

vec2 coord = gl_PointCoord - vec2(0.5);
if (length(coord) > 0.5) discard;

to cpp/open3d/visualization/gui/Materials/defaultLit.mat (the new visualization GUI)

fragment {
    void material(inout MaterialInputs material) {
        prepareMaterial(material);

        material.baseColor.rgb = texture(materialParams_colorMap, variable_colorMapUV.st).rgb;
        vec2 coord = gl_PointCoord - vec2(0.5);
        if (length(coord) > 0.5) discard;
    }
}

and to cpp/open3d/visualization/shader/glsl/SimpleFragmentShader.glsl (for the old visualizer)

void main()
{
    FragColor = vec4(fragment_color, 1);
    vec2 coord = gl_PointCoord - vec2(0.5);
    if (length(coord) > 0.5) discard;
}

You might have to also add this change to other *.mat or *FragmentShader.glsl files as required.

[errissa]

This has been discussed internally but it's not been a high priority. We would welcome a PR to implement this feature. If you're interested, please review the information here: http://www.open3d.org/docs/release/contribute/contribute.html.

[maayanYa]

Hi ,
I wanted to know if maybe someone tried this and can say if it worked for him ?

Meaning , is it sufficient to change SimpleFragmentShader.glsl only ? Or other changes are needed ?

And if I'm using open3D in python , making the change and building if from source , should work right ?

Thank you ,
Maayan.

[heethesh]

@maayanYa yes, I tried this out and rebuild it from source and it should work in Python too. I don't exactly remember if I had to change other shader files, but try this out first.