tessell | GWT model , presenter , view framework

As you can see, in PIX, Pipeline says there's right values on GPU, but when I debug Pixels, it uses wrong values without gZSplits[0].

And I Upload Values to GPU like this, and mZSplits is std::vector:

I am learning tessellation now. Trying to pass the colour via tesselation shaders. Like I found here, the most consistent answer: Passing data through tessellation shaders to the fragment shader
So far consulting also these sources, but did not find the problem in my code yet:
https://www.khronos.org/opengl/wiki/Tessellation_Control_Shader
https://www.khronos.org/opengl/wiki/Tessellation_Evaluation_Shader
As failing to pass for complex shapes, I narrowed problem down to simple basic triangle. Here is the problem. Only the last, third color is taken from the triangle data passed to shaders, see the TessTriangleRainbow::points in the C++ code snippet for tessellated triangle. No matter that I do, the first ad second color is ignored:

Note, exactly the same code and data but not tessellated looks ok:

Vertex shader for tessellated triangle:

I wish to calculate the nearest-neighbour distances (NNDs) of a point pattern by year with spatstat but get an error, although I cannot see any difference with the example provided in the documentation. What's the right way to do it?

I am working in the react-native-maps, I have imported a KML file that I have used for Javascript API that is not working for react-native-maps KML.

But in react-native-maps, when I am using this link(https://pastebin.com/raw/jAzGpq1F from their example) it is working.

I would like to know how Delaunay triangulation can be done to find the connectivity of the cells formed by voronoi tessellation

The following is the code that I'm using to generate voronoi cells.

I wrote a small tessellation program. I can write to a SSBO (checked output using RenderDoc) but reading the data back right away in the same shader (TCS) does not seem to work. If I set the tessellation levels directly, I can see that my code works:

In the main of the Tessellation Control shader:

I want to make a world map with a voronoi tessellation using the spherical nature of the world (not a projection of it), similar to this using D3.js, but with R.

As I understand ("Goodbye flat Earth, welcome S2 spherical geometry") the sf package is now fully based on the s2 package and should perform as I needed. But I don't think that I am getting the results as expected. A reproducible example:

So I am able to draw curved lines using tessellation shaders , but the lines coming out are very thin and jaggy(aliased). I was confused as how can I process these new points( isoline ), from tessellation eval shader to fragment shader and make it thicker and aliased.

I know their are multiple ways like using geometry shader and even vertex shader to calculate adjacent vertices and create polyline. But my goal isn't creating polyline, just a constant thickness and anti-aliased lines(edges). For which I think fragment shader is enough.

Kindly advise what will be the best and fastest way to achieve this and how can I pass "isolines" data from tessellation shader to fragment shader and manipulate their. Any small code which shows transfer of data from TES to FS would be really helpful. And pardon me, since I am beginner, so many of my assumptions above might be incorrect.

Vertex Shader: This is a simple pass through shader so I am not adding here.

Tessellation Eval Shader:

I'm working with a KML file which I'm using to plot a LineString within Google Earth. I'm receiving GPS data from a USB adapter and feeding the coordinates to a Go channel. I'm attempting to read off the channel and update a node within the KML file to add to the LineString (thus plotting my movements).

Here is the KML structure: