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Nimbus SDK: A Tiny Framework for C++ Real-Time Volumetric Cloud Rendering, Animation and Morphing

by Carlos Jiménez de Parga

A reusable Visual C++ framework for real-time volumetric cloud rendering, animation and morphing

50 OpenGL MFC Projects in One

by Petrov Vladimir

Former NeHe OpenGL Lessons adapted to MSVS-15 pro MFC in INICODE and the samples of the Joystick implementation

3D Plaza in C# with opengl Exploration

by Vasily Tserekh

A simple 3D exploration of a plaza in OpenGL and C#

The OpenGL and GLUT: A Powerful Graphics Library and Utility Kit

by logicchild

An article that explains how to use this library

Latest Articles

OpenGL and WPF: Integrating an OpenGL Window inside a WPF Window

by gabriel4sonic

Shows how to use OpenGL in a .NET WPF application by directly incorporating an OpenGL window as a child of the main WPF window, making it behave more like a control

RGFW | Singler-Header Lightweight Framework for Basic Window and Graphics Context Handling (like GLFW)

by ColleagueRiley

A multi-platform single-header very simple-to-use framework library for creating GUI Libraries or simple GUI programs.

Diligent Engine: A Modern Cross-Platform Low-Level Graphics Library

by EgorYusov

This article introduces Diligent Engine, a modern cross-platform graphics API abstraction library and rendering framework

Unity Graphics Emulator for Native Plugin Development

by EgorYusov

This article describes Unity low-level plugin interface and the Unity graphics interface emulator that facilitates native plugin development.

All Articles

OpenGL

OpenGL and WPF: Integrating an OpenGL Window inside a WPF Window

1 Mar 2024 by gabriel4sonic

Shows how to use OpenGL in a .NET WPF application by directly incorporating an OpenGL window as a child of the main WPF window, making it behave more like a control

RGFW | Singler-Header Lightweight Framework for Basic Window and Graphics Context Handling (like GLFW)

25 Feb 2024 by ColleagueRiley

A multi-platform single-header very simple-to-use framework library for creating GUI Libraries or simple GUI programs.

Clearing opengl errors causes exception

8 Jan 2024 by Maxim Kartavenkov

You can see an answer from your error message text: Exception thrown at 0x00000000 in Application.exe: 0xC0000005: Access violation executing location 0x00000000. This means that your code call something at the address of 0x00000000. So...

Clearing opengl errors causes exception

4 Jan 2024 by Rick York

This is rather odd. Mostly because I have worked extensively with OpenGL and this is something I have never found necessary to do. You might have better success in finding out what the errors were and fixing them. I wrote this function a while...

Clearing opengl errors causes exception

4 Jan 2024 by P. Mehroof Abid

When I call while (glGetError() != GL_NO_ERROR); it gives the following exception: Exception thrown at 0x00000000 in Application.exe: 0xC0000005: Access violation executing location 0x00000000. And my error checking code is like this: ...

Resizing issues while trying to use opengl in a child window made with win32 api

24 Oct 2023 by samas69420

I have a window made with win32 API and inside this window, there is a smaller window in which another thread draws images using opengl. I removed the default frame and painted the visible portion of the big window so I can use it as a custom...

Diligent Engine: A Modern Cross-Platform Low-Level Graphics Library

18 Aug 2023 by EgorYusov

This article introduces Diligent Engine, a modern cross-platform graphics API abstraction library and rendering framework

Draw a filled Rectangle using OpenGL

7 Aug 2023 by Sona from kerala

I want to draw a filled rectangle in vC6 using OPENGL..pls help me with this

Unity Graphics Emulator for Native Plugin Development

12 Jul 2023 by EgorYusov

This article describes Unity low-level plugin interface and the Unity graphics interface emulator that facilitates native plugin development.

C++ glteximage2d not working with int array

20 Apr 2023 by huguidesr

I've been trying to draw a bitmap int array using glTexImage2D, but it only outputs white nothingness. It outputs jumbled messy pixels from out of bounds memory if I initialize the int aray as a char array instead, but it only renders whiteness...

C++ glteximage2d not working with int array

20 Apr 2023 by Rick York

I don't have an answer for you but here are a few sample projects you might get a hint from : 50 OpenGL Win32 Projects in One[^] 50 OpenGL MFC Projects in One[^] Your Own Quadrics in OpenGL MFC[^]

Having trouble rendering entire sphere

17 Apr 2023 by Chillzy

So I went onto a different forum and I asked this question, and somebody helped me solve it. It turns out that the coordinates for the octahedron were wrong. The problematic ones were top-north-east and bottom-south-east. I'll give a list of the...

Having trouble rendering entire sphere

17 Apr 2023 by Chillzy

I'm working on a program where I need to make spheres. My chosen method is to create an octahedron https://i.stack.imgur.com/xHpcm.png[^] and through tessellation shaders, subdividing it and then normalizing the coordinates into an octa sphere...

Having trouble rendering entire sphere

6 Apr 2023 by KarstenK

This clearly looks that you missed to draw one part. Most common reasons are: a) you draw it on the wrong position or b) ferget to draw it c) draw with clear color float vertices[] = { //top-north-east 0.0f, -1.0f, 0.0f, // is...

Quality Losses (Related to Kerning) in Text Rendering for OpenGL with FreeType

17 Dec 2022 by Steffen Ploetz

High-end quality in text rendering concerns not only the characters, but also the character spaces - and here FreeType is not quite up to date anymore: The kerning used by FreeType is not always available (especially with newer fonts).

First Steps / Tutorial: How to Start with TGUI (Running on SFML and Utilizing OpenGL) using Code::Blocks on Linux

5 Nov 2022 by Steffen Ploetz

My way to have a first sample program running with "Texus' Graphical User Interface" (TGUI) - a cross-platform modern C++ immediate GUI, on which I use "Simple and Fast Multimedia Library" (SFML) as backend.

H264/HEVC Video Encoder for OpenGL

26 Oct 2022 by Shao Voon Wong

H264/HEVC Video Encoder for recording OpenGL rendering

Glteximage2d with an image loaded from resources

11 Sep 2022 by sorauts

The following code successfully renders an image using an absolute path; unsigned int renderer_id; std::string filepath; unsigned char* local_buffer; int width; int height; int bpp; std::string...

Glteximage2d with an image loaded from resources

11 Sep 2022 by Rick York

You are missing some steps, at least in the code you have posted. Take a look at the call that maps the image into OpenGL : glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, local_buffer); You need to make...

Getting Started with Path Tracing using Diligent Engine

6 Sep 2022 by EgorYusov

An implementation of a basic path tracer with Diligent Engine

How can I disable resizing window by dragging borders in C++ openGL?

27 Aug 2022 by ShahadBattar

I'm using C++ openGL and I need my window size to remain constant.I've used the following function to disable the maximize button:void toggleGlutWindowMaximizeBox(char *szWindowTitle){ long dwStyle; HWND hwndGlut; hwndGlut = FindWindow(NULL, szWindowTitle); dwStyle...

How can I disable resizing window by dragging borders in C++ openGL?

27 Aug 2022 by Member 3203938

Process Non-Client HitTest Add ON_WM_NCHITTEST() to MessageMap LRESULT OnNcHitTest(CPoint point) { LRESULT oHitItem= __super::OnNcHitTest(point); if(oHitItem >= HTSIZEFIRST && oHitItem

Why doesnt my triangle change colors(opengl)

14 Jun 2022 by MARLON LESUEUR

So I am learning opengl and am doing a tutorial but everytime I run my code my triangle comes out as white instead of the rgba value I set in the fragment shader. if there is anything else wrong with the code it would be helpful if you could...

Glut mouse implementation

26 May 2022 by HMonty

Hi everyone, I´m learning OpenGL with c++ from a series of tutorials where they explain how to do that, currently I'm in the mouse detection section but I have some questions. They use the SDL library to do that but I'm using GLUT because it...

Masking Texture in OpenGL using Class CImage

6 May 2022 by Petrov Vladimir

Masking Texture in OpenGL from Bitmap Image File using Class CImage (just call the File Name)

Nimbus SDK: A Tiny Framework for C++ Real-Time Volumetric Cloud Rendering, Animation and Morphing

3 Apr 2022 by Carlos Jiménez de Parga

A reusable Visual C++ framework for real-time volumetric cloud rendering, animation and morphing

How do render 3d grid in freeglut while using imgui

22 Nov 2021 by jason lyman

I'm having trouble drawing stuff to the screen instead I just see the gui instead #include "imgui.h" #include "imgui_impl_glut.h" #include "imgui_impl_opengl2.h" #ifdef __APPLE__ #include #else #include...

Opengl. A single texture is being applied to all objects.

18 Nov 2021 by candijen

I am beginner in Opengl. All my objects get the same texture. I want them to have three different textures, wood.jpg and Green.jpg and cookie.jpg. What can I do to fix this. This is in my code. Mesh cube; Mesh Fence; Mesh GM; ...

Opengl. A single texture is being applied to all objects.

17 Nov 2021 by Rick York

I believe the problem is you are calling glGenTextures(3, texture); three times. That should be called only once. glBindTexture should still be called for each texture.

Use of code in derivative work

4 Oct 2021 by OriginalGriff

As Richard says, posting this here isn't the right place - there are 15,049,311 members here, all of whom are allowed to submit articles for moderation before publication and the chances of the specific article's author seeing this question are...

Use of code in derivative work

4 Oct 2021 by Member 14172998

Santhosh G, I've seen your post "Pixel Shader for Edge Detection and Cartoon Effect" and I find it very useful. A question regarding use of the example code. Can I use modified parts of it (shader code) in my commercial product (adding credits...

Use of code in derivative work

4 Oct 2021 by Richard MacCutchan

If you have a question about an article then please use the forum at the end of the article, so the author gets notified. The chances of them happening to see this question are not high.

Threedtiles node use lod or pagedlod

17 Aug 2021 by Richard MacCutchan

See Getting Support — osgEarth 3.1 documentation[^]

I am trying to change the mouse button to keyboard button on my glut project

5 Aug 2021 by sujay jay

#include #include #include #include #include void display(); void GoMenu(int value); void fish1(); void fish2(); void fish4(); void land(); void sea(); void sky(); void water(); void man(); void...

I am trying to change the mouse button to keyboard button on my glut project

5 Aug 2021 by merano99

I had no Idea what freeglut is doing, but i used a freeglut_staticd.lib and asked the Debugger what is going on when pressing a Button. The window procedure for handling Win32 events in freeglut is a callback funtion fgPlatformWindowProc()...

Could someone explain this code, its for a game.

9 Jun 2021 by Rageh11111

// C program to illustrate OpenGL game #include #include #include #define pi 3.142857 int c = 0, d = 0, left = 0, right = 0; int m = 0, j = 1, flag1 = 0, l = 1, flag2 = 0, n = 0, score = 0, count = 1; void myInit...

Could someone explain this code, its for a game.

6 Jun 2021 by OriginalGriff

Do you have any idea how much work explaining code line by line is? Every single line needs a paragraph of explanation! For example: int next = r.Next(); Create a new variable called "next" which can hold a integer value. From...

Osgearth calculate boundingbox

24 May 2021 by peanutpig

i want draw a model BoundingBox in osgearth,but position is not suitable osg::ComputeBoundsVisitor boundVisitor; node->accept(boundVisitor); osg::BoundingBox boundingBox = boundVisitor.getBoundingBox(); osg::Matrixd...

A basic X3DOM editor based on OpenGL running on ReactOS (and consequently on Windows XP and newer versions)

16 May 2021 by Steffen Ploetz

Creation of a basic X3DOM editor based on OpenGL with as little code as possible, that is running on ReactOS and Windows, to check out the capabilities of X3DOM.

Introduction to OpenGL with C/C++ on ReactOS

10 May 2021 by Steffen Ploetz

Check whether ReactOS is able to run OpenGL, determine a convincing IDE and get started with the OpenGL on ReactOS.

Unable to execute a program of opengl in dev C++

4 May 2021 by Rakshith P 2021

story.txt - Google Drive[^] What I have tried: i tried to change the 62 bit to 32bit but didnt work and also tried to debug it in the bin and still didnt work

Light Source Features and Related Material Properties in OpenGL

16 Apr 2021 by Steffen Ploetz

Basic light source approaches and related material properties handling for OpenGL

How make my cube render properly?

23 Mar 2021 by Ally Terna

I am trying to make a cube in my OpenGL project. My code for some reason is not rendering and I have no idea why. Even though nothing draws, I am not getting any errors or warnings. All I see is a blank screen, but no cube. How do make the cube...

Geometric Primitives for OpenGL

9 Mar 2021 by Steffen Ploetz

Box, cylinder, cone and sphere construction for OpenGL with texture and light effects

computational-geometry

The Role of WGL Functions of OpenGL Rendering onto Microsoft Windows

27 Feb 2021 by Southmountain

This post sheds some light on all WGL functions(wiggle functions) in OpenGL extension for Microsoft Windows system

How do I write a program with opengl that is a circle inside a rectangle and rotate together?

4 Feb 2021 by RickZeeland

See answer here: c++ - OpenGL Rotation - Stack Overflow[^]

How do I define quads in pyglet as I do in unity

1 Feb 2021 by Member 15062255

in Unity for generating a quad we need to define triangles and vertices how to define a quad in pyglet as I do in unity What I have tried: I'm just starting out in pyglet

How do I define quads in pyglet as I do in unity

1 Feb 2021 by Richard MacCutchan

Start by consulting the pyglet Documentation — pyglet v1.5.11[^].

Getting Started with Volume Rendering using OpenGL

21 Jan 2021 by Divin Ookken Athappan

Step by step explanation of 3D image rendering using OpenGL

Vulkan Playground: An Easy Introduction to Vulkan using C++ with Visual Studio 2019

18 Jan 2021 by Jon

A high level library allowing quick and easy creation of Vulkan samples

How draw like this ?

3 Dec 2020 by gxzid

how draw like this [^] What I have tried: how draw like this

How draw like this ?

3 Dec 2020 by Rick York

Here's a sample for you : Getting Started With OpenGL[^]

How draw like this ?

3 Dec 2020 by OriginalGriff

Two things: 1) Don't use link shorteners - it makes you look like a spammer or a troll as you have no idea what you will find at the other end. I checked this one using a sandbox before I let it through. 2) While we are more than willing to help...

VS code glad glfw opengl erorr

19 Nov 2020 by Paolo Mazzon

Good day, I'm trying to configure visual studio code well to learn Opengl I use Glad and GLFW libraries this is the project that works in Xcode but I hate Xcode and I want to make it go to Visual studio Code. Git: ...

VS code glad glfw opengl erorr

19 Nov 2020 by Rick York

It appears to me that the module containing MyClassShader is not being compiled or it is not part of the link process. Another possibility is you have not implemented its constructor and its use and setFloat methods.

How to make 3d space in C# for website

13 Nov 2020 by Member 12224804

I want to make a 3d space with Stereographic camera not perspective on web-based software or application using C#. the 3d space need to rotate zoom and pan the camera is fixed in the center and offcource fixed particles and draw lines as...

Problem with stencil test in sharpgl

26 Oct 2020 by Roullakis

I'm trying to get Stencil Test to work using SharpGL. The following simplified example does not work. It should have displayed only section of the second rectangle, however it displays the entire rectangle. Any help would be much appreciated. ...

How applayed transfer function texture based rendering ?

24 Sep 2020 by Member 14772350

Getting started with Volume Rendering using OpenGL[^] What I have tried: Hello everyone in the link at the top the volume display at gray level I want to display it with color by the application of the transfer function but I do not know how I...

How applayed transfer function texture based rendering ?

24 Sep 2020 by Richard MacCutchan

You should post the question in the forum at the end of the article, so the author can help you.

Getting Started with Mesh Shaders in Diligent Engine

23 Sep 2020 by EgorYusov

Introduction to amplification and mesh shaders, the new programmable stages available in modern GPUs, and how to use them to implement view frustum culling and object LOD selection on the GPU using the Diligent Engine API

Linker issue with mingw, notepad++ and freeglut

7 Sep 2020 by VD-Flash

Here is the solution to your problem. I was experiencing the same problem as you when I first used FreeGLUT. First confirm that you have a OpenGL32 and FreeGLUT library. If you are using MinGW then these should be located in the lib directory...

How do I use a bitmap from application resource as opengl texture?

7 Sep 2020 by Rick York

If you know how to load a file and make a usable texture from it then you are almost all the way there. To access a texture resource, call LoadBitmap. From there, follow similar steps to what you did with the file's texture. Both methods...

How do I use a bitmap from application resource as opengl texture?

7 Sep 2020 by VD-Flash

Hello readers. Here I am with another problem. I learnt Win32 and OpenGL programming. I found that bitmaps can be stored in resource scripts for easy and quick access. I also know how to create a texture in OpenGL by loading an image from a file....

Article not working and error message is shown

7 Sep 2020 by KarstenK

Normally frameworks are working and you have some bug or misuse in your code, like missed initialization or connecting to your objects or structures. Tip: try some example code from the framework and insert your code

Article not working and error message is shown

7 Sep 2020 by Richard MacCutchan

It would help if you posted your query in the proper forum: Bugs and Suggestions[^], and provided a link to the page and exact details of what you mean by "not working".

Creating an opengl view on a windows form

30 Jul 2020 by SADEGH2077

This code is for TO OPENGL 4.6 Not responsive please help Visual Studio cli c++

Can framebuffer create a buffer for adding queses of images for fast rendering?

30 May 2020 by Member 14816523

Hi, I am working on the OpenGL Application. which can open and read multiple video file frames. so, in output is can play three different videos at the same time without async frames rendering. what are odds get the sync frames rendering? After...

Calculating the Pi Number

13 May 2020 by Askar Azhibaev

Calculating the pi number faster using a simple formula

Linker issue with mingw, notepad++ and freeglut

22 Apr 2020 by Member 14810494

I know that this response is over 3 years removed form the original posting, but I ran across this posting while researching and wanted to offer a response. I've experienced this type of undefined reference before. It can happen when one is...

Linker issue with mingw, notepad++ and freeglut

22 Apr 2020 by Member 13013288

I'm a student working with OpenGL in C++. I'm trying to get freeGLUT to work with MinGW. I'm asking because I've already tried a ton of sites, multiple times and there is no clear solution, at least to my knowledge. I've had this problem for months.Although using Visual Studio would be the...

A Very Simple Car Race Game in C# and OpenGL

30 Mar 2020 by Vasily Tserekh

A simple straightforward car race game with minimum LOC.

My First Collision Algorithm

30 Mar 2020 by Vasily Tserekh

Collision algorithms aren't rocket science and this article proves this idea.

Marching Cubes Implementation

27 Mar 2020 by 99dc

Best answer - uses WPF instead of OpenGL but shows basic principles and actual code Medical image visualization using WPF[^]

I am rekindling my interest in opengl...should I or move on? ( Question)

8 Mar 2020 by Richard MacCutchan

So a five year old comment is probably no longer relevant. I would suggest going to OpenGL - The Industry Standard for High Performance Graphics[^], and checking the current information.

I am rekindling my interest in opengl...should I or move on? ( Question)

8 Mar 2020 by Vaclav_

I own few years old "OpenGL Programming guide" book and have played with OpenGL - in Windows. I need a refresh course, so I found this ( 5 years old article !) An Introduction to OpenGL Programming | Linux Journal[^] One of the comments ,...

LWJGL shader's are not working for no apparent reason

3 Mar 2020 by 8BITDEVreal

so i am new to lwjgl and am i messing with making a 3d game with so i was learning about shaders and i followed the tutorial and i got this error message 0(1) : error C0000: syntax error, unexpected $undefined, expecting "::" at token "#" 0(5)...

LWJGL shader's are not working for no apparent reason

3 Mar 2020 by 8BITDEVreal

i figured it It don't seem to support #version anymore and in and out are also invalid so i found it was just a error with my shader code as i am following a tutorial series a couple years old my new vertexShader: precision highp float; void...

LWJGL shader's are not working for no apparent reason

2 Mar 2020 by Richard MacCutchan

You need to check the documentation for the correct syntax for your code, and the error messages. As this is a specialised library, you will most likely get a faster response at the LWJGL Forum - Index[^].

SpaceVIL Framework. Cross-Platform GUI with .NET & JVM

30 Jan 2020 by Roman Sedaikin

SpaceVIL is a cross-platform and multilingual framework for creating GUI client applications for .NET Framework, .NET Core and JVM. This article discusses the SpaceVIL framework, its capabilities and a brief story of its creation.

Can anyone help make this game automatic?

29 Dec 2019 by OriginalGriff

We are more than willing to help those that are stuck: but that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for us to do it all for you. So we need you to do the...

Opengl with winform C++/CLR as GUI

16 Dec 2019 by Rick York

No, one should not call main from anywhere. It is the designated entry point for CLI programs. For GUI programs in windows the entry point is WinMain. This is a bit confusing. How is it you have a button in a window with a CLI program? If you want to learn how to use OpenGL in a WinForms...

Opengl with winform C++/CLR as GUI

16 Dec 2019 by SIDHARTH S

Is it possible to call the function int main(int argc, char **argv) { glutInit(&argc, argv); glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH); glutInitWindowSize(500, 500); glutInitWindowPosition(100, 100); glutCreateWindow("Window"); glutDisplayFunc(display); ...

Exploring Multi-Threading in C++: Loading Textures

15 Nov 2019 by Michael Adaixo

Loading textures - exploring multi-threading in C++

How do I properly implemet keyboard key event to change image input in opengl using SOIL ?

18 Jul 2019 by lock&_lock

I need to perform pixel manipulation from images in glut OpenGL (I know it's old, but I'm bound by many other reasons). I need to change the image several times while showing them at the same time as well. I'm trying to use key event to perform that. Also, I'm using SOIL library to load my...

How do I properly implemet keyboard key event to change image input in opengl using SOIL ?

18 Jul 2019 by Rick York

The only thing your event handler does is load an image. What handles display of the image? Usually, when you load an image you have to invalidate the display window so that it is redrawn. I see no code that does that so that is probably what you lack to make it work.

Random line is drawed in C++ opengl project

15 Jul 2019 by Stefan_Lang

This is just a guess, as the code is too long to fully analyze, but judging by your problem description this is just a corner case, and there is a piece of code in Ray::cast() that is likely to cause issues in corner cases: const float den = (x1 - x2) * (y3 - y4) - (y1 - y2) * (x3 - x4);...

Random line is drawed in C++ opengl project

15 Jul 2019 by Member 14074655

Hi, I' m pretty new to C++ and OpenGL and was coding a C++ OpenGL version of the 2d Raycasting Challenge from the Coding Train YouTube channel(ep.145). The entire thing seems to work well except for one thing. In the project whenever the 0 deg ray (the ray which points directly to the right)...

One of my class values keeps defaulting to its original value

1 Jul 2019 by Stefan_Lang

On top of what Carlo said in solution 1, there are two more issues: Quote: return x == 0 || x == width || y == 0 || y == height; Never compare floating point variables using == or != . These values are prone to subtle variations due to rounding effects, and therefore a direct comparison will...

One of my class values keeps defaulting to its original value

1 Jul 2019 by Member 14074655

Hello I'm pretty new to C++ and am trying to simulate natural selection, similar to this video - https://www.youtube.com/watch?v=0ZGbIKd0XrM . I'm trying to add random movement in my game through random angles and moving speed amount of distance to that angle. However in the case of the code...

One of my class values keeps defaulting to its original value

1 Jul 2019 by CPallini

The root of the problem is this piece of code: Quote: if(angleOfSense==-1) aom = LO + static_cast (rand()) /( static_cast (RAND_MAX/(HI-LO))); else aom = angleOfSense; It computes a random angle only the first time it executes (when angleOfSense is equal to its...

OpenGL Rendering to a WPF Window

25 Jun 2019 by MaximilianW

OpenGL rendering to WPF window

How do I render/draw multiple meshes (from a 3d scene)

14 Jun 2019 by KarstenK

You should optimize your code. Like adding all meshes to a vector isnt a good idea. What about having an array of structs with a single mesh and shader. This would reduce looping times. And you should draw each mesh in a single step, but start the render engine once and draw ALL meshes. ...

How do I render/draw multiple meshes (from a 3d scene)

14 Jun 2019 by Member 14131869

I am working on a graphics engine in c++ and DirectX 11. While importing scenes (using Assimp) I have to render multiple meshes with separate shaders. I do this by the following method I have an std::vector to store shaders and another one for meshes. After I open the file I add all the meshes...

Can I get example opengl code to continously decrease the size of a sphere using animation

14 May 2019 by Member 9641602

I tried to continously decrease the sphere radius using a loop, but it does not seem to work.The animation for increasing sphere size is working fine. Not able to understand why decreasing radius is not rendered. I request anyone to share any sample code that can help to smoothly animate the...

Can I get example opengl code to continously decrease the size of a sphere using animation

14 May 2019 by CPallini

You are assigning double values to the int variable r (and apparently ignoring compiler warnings...).

How to see if I clicked on a object in opengl C++?

10 May 2019 by Member 14074655

I'm trying to make a color picker tool using OpenGL, and have made a reasonable demo. When I click a color it uses the glReadPixels function to find the color. This does work however it also takes the color of the background when I click on the background. Is there a way to see if I clicked on...

How to see if I clicked on a object in opengl C++?

10 May 2019 by phil.o

Have you tried some basic examples on how to handle mouse in opengl? opengl click handler[^]

3D Engine, from GLUT to GLFW

14 Apr 2019 by Martin Vorbrodt

3D Engine, from GLUT to GLFW

How do I correctly pass pointer[] or *(pointer+index) to lookup table in C ?

13 Apr 2019 by CPallini

Quote: so I guess the problem is in my lookup table function. How do I correctly do this ? I find nothing wrong with your scaling table. Of course you have to initilialize it (calling scaling) before calling makeshift. Note you are assigning a float to an unsigned char. I believe your compiled...