quads | quad geometry creation and manipulation tools

I'm trying to make a Minecraft clone for fun, and I encountered a problem that shouldn't happen. When I generated the meshes, I didn't make any gaps between the quads. But for some reason, a thin line appeared between the quads.

And it is one piece of mesh, not separated. I don't understand why that happened. Can someone please help?

Edit: the gaps aren't as obvious in the scene view.

Edit 2: The gaps aren't as obvious when the MSAA of the camera is turned off.

I've been trying to look into different examples for texturing in OpenTK, however, little to no code examples use the same approach as I desire or a lot of pointless workarounds are required that do not fit my needs. I am simply trying to draw images in OpenTK without their UVs being distorted or malformed. Or rather, how do I malform them to fit the primitive (in this case quad/square) wherever its positioned at in the 2D world?

Consider this image (It's my texture I'm trying to fit inside a quad primitive):

This is the unwanted result. As you can see, it is cropped. I don't care about the wrapping because I plan on fitting the whole image inside the square (No aspect ratio needed). Different wrapping settings did nothing. The image's center is still outside the square.

The transparency and palette is my thing to worry about, I only need help fitting the whole image inside the square!

This is my code for loading textures:

as the title suggest, i am trying to understand the purpose of org.apache.jena.sparql.core.GraphView in the Jena Architecture. I'm currently studying the SPI.

the doc says:

Implement a Graph as a view of the DatasetGraph. It maps graph operations to quad operations. GraphUnionRead provides a union graph that does not assume quads, but loops on graphs.

https://jena.apache.org/documentation/javadoc/arq/org/apache/jena/sparql/core/GraphView.html

I wonder more in which context this is used, as in at a high level, what is the intrinsic purpose of the class ?

Regards,

Maat

I'm writing a bash script to process files using FFMpeg, depending on the number of files.

I'm writing an if / elif statement to check for how many files there are that match a string, but first taking away part of the end of the string. The comparison doesn't seem to work, I've tried == and -eq. Not sure of a better to do this

I'm totally new to PyOpenGL and trying to add a shader to live camera footage.

The footage is being displayed correctly, and the shader (commented out because there's nothing in it yet) is working too.

The thing is i don't know how to display the camera texture inside the fragment shader. Can someone help?

initialization:

I am following this article to render a video onto a texture using OpenGL and winforms using C++. I have changed the code in the renderer as follows. But the glutPostRedisplay(); is not working. The same logic works well when I am creating a OpenGL window and rendering over there. But does not seem to work well in winforms. As of what I understood is that the glutPostRedisplay is trying to refresh my main winforms window and not the OpenGL viewport. I am not sure how to Refresh my viewport.

Until now, I've been handling translucency by sorting my translucent triangles back to front. This works very well for quads, but I'd like to incorporate translucency in my models now.

I've thought of separating the translucent tris out and sorting them in the same way as my quads. Sorting by their centroids, then streaming the results into an IBO for just them each frame. But the number of triangles in a model, and the need to transform them on the CPU according to a table of bones, and blend shapes, and some other things in my vertex shader... This doesn't seem like a good solution in performance or sanity.

My models are about 4K tris each, with maybe 20 in a scene at worst, and I'd really like to lean into a simple cute style that relies on translucency, which doesn't have to be physically accurate, or draw objects behind 4 or more layers of translucency.

What technique might work well for my situation, in 2021? I'm using OpenGL 3.3 but I'll use another version if new features exist for this.

I have an excel sheet which looks like this - All the data is numerical data. The actual sheet has a lot more rows & columns in reality.

https://i.imgur.com/E2HEdXF.png

What I Want to get out of this data is something like this - For each year, I want to sort A & F based on the year's numerical data. So not one sort, but one sort per year.

I don't think there is a simple method for doing this, so I was thinking of 2 possible ways

1. I export the data into some database & then use SQL queries to get the output I want - I assume there must be some databases which allow you import Excel data.

or

1. Write a VBA program which does the following - Copy Column D & E into another place & sort based on Column E. Then Copy Column D & F into another place & sort based on Column F & so on & so forth.

I have never done VBA, but I am programmer, so I assume it wouldn't be trouble to do this.

However, I was wondering if there is some other easier way to do it or if not, which of the above two would be a better way to do it.

Simple and short question but I don't know why it is not working. When I call glViewport in the window frame buffer callback nothing changes. Error code is 1282 (0x502). I already googled and found no helpful article. Some said I should use glScissor in addition but does not work either.

Here an MCVE with an oscillating quad for visualization: