Recently I started OpenGL tutorials.
I use CLion as IDE. But it doesn't have native support of GLSL.
There is a CLion plugin called "GLSL support", which adds *.shader file association and shader language syntax highlight, which is pretty handy.
The problem is: in openGL tutorials shader files have extensions *.vertexshader / *.fragmentshader, which GLSL support plugin doesn't want to recognize.
Does anyone know how to add file associations for CLion GLSL support plugin? Or CLion extensions in general?
GLSL shaders can have any file extension you want, after all, you write the code that loads them!
Quite often I name mine things like simple.vert, simple.frag or even just use .txt if I'm being lazy.
If you want Clion to pick them up just use .shader
Related
I've installed Qt 5.12 , When i want to compile my project show this
errors:
Errors :
QOpenGLShaderProgram::uniformLocation(qt_Matrix): shader program is not linked
ensureInitialized(141): D3D compiler module not found.
QOpenGLShader::link: D3D compiler module not found.
shader compilation failed:
"D3D compiler module not found.\n"
Welcome to SO!
First of all, let's clarify what the error means.
Qt uses ANGLE on Windows, which is a layer that allows to run OpenGL software on systems where OpenGL is not available, by traslanting the OpenGL calls into DirectX calls. Qt decides whether to go with pure OpenGL or ANGLE depending on the configuration of the machine (video card model, video drivers version, etc).
More details on that are available at https://wiki.qt.io/Qt_5_on_Windows_ANGLE_and_OpenGL.
Even if you are not writing any OpenGL code yourself, the qml runtime surely has a lot of OpenGL calls that again, may go through ANGLE.
That is why the confusing error message (looking for the D3D shader compiler while dealing with OpenGL code!).
Now, the Qt project bugtracker reports the same issue you have https://bugreports.qt.io/browse/QTBUG-71510, although at the time of writing no solution has been provided. I would suggest to have a look at the bugtracker now and then to monitor the progress on this issue.
A couple of workarounds you may try:
Copy the d3dcompiler_xx.dll in the same directory where your exe is;
Force Qt to use OpenGL instead of DirectX, by setting the environment variable QT_OPENGL to desktop (more details on that are at http://doc.qt.io/qt-5/windows-requirements.html)
According to bugreports.qt this issue is now fixed from version QT 5.12.1.
https://bugreports.qt.io/browse/QTBUG-71510
I have the same issue on my older Del laptop. Placing d3dcompiler_43.dll in the exe folder does solve the issue. I found using one of the following commands also works, which I assume avoids ANGLE all together.
//To use pure OpenGL :
QCoreApplication::setAttribute(Qt::AA_UseDesktopOpenGL);
//Or use software emulated OpenGL :
QCoreApplication::setAttribute(Qt::AA_UseSoftwareOpenGL);
I just include the first pure OpenGL setting in the "int main(int argc, char *argv[])" bracket in main.cpp
I have windows 8.1 OS.
I wanted to run a basic C++ program using openGL so i downloaded a compatible Turbo C++ software of 64 bit.
When I run my program I got errors because it said unable to open the header file i.e., graphics library. Are there any primary things like setting up a path in environmental variables, which URL should I paste? Or let me also please know if there's any other common things that I need to set up in-order to use the Graphics Library. Thank you.
Do not use Turbo C/C++ , Try any modern IDE (Codeblock , codelite , dev-c++ or any other). Read this
http://www.codeblocks.org/downloads/26
In IDE you will get all common header files plus examples , you will get an OpenGL example here . I suggest you to try codeblock.
Why not to use Turbo C/C++ (https://stackoverflow.com/a/1962710/4499919)
OpenGL isn't suppported by TC++.
However you can run a simple C graphics program using graphics.h
Open Options and select Directories from it.
I'm attempting to make a video game in Unreal Engine 4.9. I'm building it for Windows, but I'd like to have it use opengl instead of directx in the executable. However, I've found no options that let you do this. Unreal Engine uses OpenGL when it creates executables for Linux and Mac, but there seems to be no way to use OpenGL with Windows.
Am I missing something? Is there some way to force Unreal Engine to use OpenGL in Windows executables?
EDIT: The reason I want to use OpenGL is because I want this game to run without having to install anything on the end user's computer (DirectX has to be installed to work)
Microsoft doesn't really support OpenGL, they typically go out of their way to make it very difficult to use OpenGL on Windows and strongly encourage people to use DirectX instead.
The simplest way to get a working OpenGL context in windows is sometimes to use ANGLE which is a compatibility layer which translates OpenGL calls to DirectX calls. This is what Chrome and Firefox use to support WebGL on windows. I doubt that Unreal Engine is integrated with this, so you might have a hard time.
Edit:
EDIT: The reason I want to use OpenGL is because I want this game to run without having to install anything on the end user's computer (DirectX has to be installed to work)
One thing you could do is cross-compile the Mesa3D drivers, as described here: https://wiki.qt.io/Cross_compiling_Mesa_for_Windows
But then you won't get hardware acceleration.
I have been coding OpenGL for a while now using Java and LWJGL. However recently I decided that I would switch from Java to C++.
I managed to set up OpenGL with Visual Studio 2013, and had some fun with that. However I am used to using modern OpenGL (shaders, vbo's, vao's etc...), and I believe what I am looking for is OpenGL ES.
I have been using the GLFW library to create a window with OpenGL context, so how do I do this with OpenGL ES.
I tried adding the #define GLFW_INCLUDE_ES31 line to above the glfw3.h include, however then it cannot find the GLES3/gl31.h header file. I don't know how to obtain this file on my computer, because the GL/gl.h file was just on my computer by default.
Am I supposed to download it?
Apparently OpenGL ES is aimed at smartphones or less powerful devices, so I was wrong in thinking I wanted to use OpenGL ES. In that case, how can I use these newer functions within Visual Studio, and C++. At the moment I only seem to have access to OpenGL 1.1 functions.
You are lacking a loader (GLEW for example)
"just" add it to your project and you will be able to use the GL_ functions again
I'm trying to setup VC++ to compile code with OpenGL 4.1 functionality. I downloaded the 3 header files from from opengl.org; put them in the correct paths and include them - but keep getting errors like this:
error C3861: 'wglSwapIntervalEXT': identifier not found
I have the latest video drivers. OpenGL says the problem is MS includes only version 1.1 with their compiler when though the vendor/driver supports 4.1.
One of the big pains of using OpenGL on Windows is that the Windows SDK only ships with OpenGL 1.1. There's probably a really good technical (and non-political) reason for this, but the fact remains, if you want to do anything with OpenGL on Windows, you're on your own.
What you need then, is something to bring the Windows SDK up to current standards (OpenGL 4.1 as I write this.) When I was originally trying to solve this problem (around the time of OpenGL 3.0), I came across GLee http://elf-stone.com/glee.php which is a cool library which makes the full OpenGL spec available easily. I didn't like their license, so I decided to write my own extension loader.
I don't think anyone should ever have to do this again, so I've made mine public domain, do with it as you will. I'd like to hear if you use it in something, but that's not a requirement.
http://www.onemanmmo.com/index.php?cmd=newsitem&comment=news.1.28.0