textures

I'm just looking to create a very simple Fragment Shader that draws a specified texture to the mesh. I've looked at a handful of custom fragment shaders that accomplished the same and built my own shaders and supporting JS code around it. However, it's just not working. Here's a working abstraction of the code I'm trying to run: Vertex Shader <script id="vertexShader" type="x-shader/x-vertex"> varying vec2 vUv; void main() { vUv = uv; gl_Position = projectionMatrix * modelViewMatrix * vec4(position,1.0); } </script> Fragment Shader <script id="fragmentShader" type="x-shader/x-fragment">

I am trying to create a working health bar, and I have tried methods like Creating GUI.Box() that contains the health bar texture that I have created, but this makes the health bar resize to scale like this: Resizing the texture itself without the GUI.Box(), using the Texture2D.Resize() Method, but when I used the Texture2D.Resize() method, my texture turned black . It looks like this: My code looks like this. It was edited so that the irrelevant parts were deleted for ease of reading. Why does my health bar turn black when I resize it? Are there any ways I can prevent this from happening?

I'm trying to create two textures for my OpenGL project. Initially i created the textures seperately and this worked perfectly fine. Not to repeat myself, I decided to attempt to make them as an array and use a for loop to perform the steps twice. unsigned int textures[2]; int width, height, nrChannels; unsigned char *data = stbi_load("C:\\Users\\A\\Desktop\\wall.jpg", &width, &height, &nrChannels, 0); glGenTextures(2, textures); for (int i = 0; i < 2; i++) { glBindTexture(GL_TEXTURE_2D, (i == 0) ? textures[0] : textures[1]); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);

So in WebGL, I can store a texture in up to 2 dimensions- and read it in the shader using texture2D(whatever); If i wanted to store a 3 dimensional texture so that I can read 3-dimensions worth of data on the shader, how would I do it? Here are my ideas- and I am wondering if I am approaching it correctly: In Javascript: var info = []; for (var x = 0; x < 1; x+=.1) { for (var y = 0; y < 1; y+=.1) { for (var z = 0; z < 1; z+=.1) { info.push (x*y*z); info.push(0); info.push(0); info.push(0); } } } //bind texture here- whatever gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 10, 100, 0, gl.RGBA, gl