texture

I use blender 2.8 on mac os. I create a cube, make a uv scan in the editing mode, the uv editor shows it, click open image, s ... als, but this spoils the aspect ratio and stretches, I think to solve the problem using uv (or can I fix it in materials ?).

I have a reflection texture (Specular Map), I use it in the shader in a similar way: vec3 specular = texture(specularMap, fs_ ... don't understand what format to set...What just did not try, there is either no glare at all, or it is also red, if GL_RED.

There are two textures, one color, the other transparency (for the rings of the planet) I don't understand how the shader sho ... but the color map does not depend on the transparency map. The solution was written in in the response, here is the result)

I'm trying to draw a cube using Index Buffer. That is, I have 8 points and an index buffer that shows in what order you need ... he index buffer. Is it possible to somehow pass different UV coordinates for individual faces and still use the index buffer?

There is an array of 16x16 objects from which sprites are drawn and immediately glued into 1 large texture (each tile is 16x1 ... 0, 0, chunkTexture.width, chunkTexture.height), Vector2.zero, spriteSize );

I'm making a sooooo simple "photo editor". I have a texture - background , and on top of it, the user must write some text. A ... t overlaid on top (with the extension pre-selected by the user). (well the type is like in photoshop) How can this be done?

Added the texture of the rope to the string, and it is stretched. How do I fix it so that the rope is clearly visible? Stretched bowstring texture Texture