After porting, or trying to port an some "old" OpenGL application to "modern" core OpenGL, I have to ask these questions. Any good reason the good...

Hi, All! Hope you have a good day. I need some explanation for topic. I try to understand "Transform Feedback" in "Occlusion culling"...

Hi, guys! For my app the "Cascade Shadow Mapping" is eating more than 50% percents of frame rendering time. Which techniques can you recommend...

I am going back to a game project I have worked on before. I am able to get rock sprites to move down the screen and can shoot them with bullet...

Good day everybody, i have a strange error which pops up at times, i have a resource manager for models which load a mesh when its needed, the mesh...

Well i got into a problem when i coded my code completely this day. My project(Fractal Tree)stretch when my window is not a square. When i tried...

I noticed that once number of shaders used in a project grows, the code duplication between shaders becomes an issue. It is mainly caused by two...

hows that for a change?!? - I got no problems - AND YOU WONT EITHER - when you start out with correctly written examples !!!!! ///CREDITS -- win7...

Hi, I am currently writing c++ wrapper classes for all the commonly used OpenGl objects. At the moment I am working on the vertex array object...

Hey there! Late last year, I could run Ultimate DOOM, Minecraft, and pretty much any other game requiring OpenGL perfectly. Absolutely no problems....

Hello, so I'm currently using rectangle collisions to check whether objects in my game collide or not. I did some research and came across Axis...

I had implemented point light shadow mapping via GL_TEXTURE_CUBE_MAP_ARRAY. It was working fine with rendering per cube face, but it was too slow....

Hi there! This code works fine: glm::mat4 proj = glm:: perspective(45.0f, 4.0f / 3.0f, 1.0f, 100.0f); glm::mat4 translate =...

Target: OpenGL ES 3.1 I am trying to atomically swap memory inside a SSBO. Here's how I do it: Fragment Shader: layout (std430,binding=1)...

I have heard that there are particular commands that force the gpu to sync with the client thread What are they? And my question about...

Hello, I've recently started studying OpenGL, I'm trying to make a camera fly around, I managed to get it to work however when I tried to move the...

When render using FBO, it consumes more memory. I check memory consumption using TOP command in linux. Is there any problem to clear buffer objects?...

I have a shader which needs a map which includes ternary digits (i.e. value can be 0, 1, 2), aka trits. I know this can be (fairly) efficiently...

I'm running OpenGL 3.3 on Windows 10, GTX 960 Test program written in C++ I'm using VAOs and VBOs I've noticed my program renders any number of...

In my current GLSL source code, the output of fragment shader must be read and accessed (like pixel coordinates). As far as I know, on the fragment...

Hi I wish to get information from a texture adjacent to the current "texture" in a fragment shader - i.e. from faces (triangles/quads) which share...

I'm looking for the best possible way to test the alpha value of a fragment, see if it greater than a certain value (specifically 0.5) and discard or...

I create a triangle in the scene.And use a in variable to move the triangle's position.But it doesn't work.I don't know why. I have attached my...

What is the best way of sending a lot of data to a shader? In my deferred rendering pipeline, i'd like to send the deets of 1,000 point lights,...

I'm creating a debug draw class to render debug shapes for my engine. This debug rendering is very slow, you can see the code here:...

Hi Team, I am relatively new to OPENGL and need to accomplish task of resize (say 2 times from original size) cube(3D) once mouse over it. And...

Hello! I am trying to port tutorial #11 from ogldev to use glm, but something is not okay. Original code: Pipeline p; ...

So I'm making a game with OpenGL/GLFW, and I'm trying to simplify debugging by naming OpenGL objects with glObjectLabel. The issue is, when I look up...

Let's say I have a simple 2D scene with a certain amount of sprites being drawn from the same texture atlas (for example, a tile map). The game world...

I have been working to create a circle based on a shader that changes color periodically. My code prints out a blank window. I decided to set-up some...