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digitalmars.D - Derelict

reply D.Rex <armstronga94 hotmail.com> writes:
Hi,

I am sure this has been asked a thousand times before, but can 
anyone link me to a tutorial on how to set up derelict and GLFW3, 
I am trying to work on a project and I just can't get it set up 
regardless of how many times I read the derelict readme's.

Also, if anyone knows of any good tutorials or ways of creating a 
flow-graph editor similar to blender's flow-graph editor 
interface I would greatly appreciate a link or some assistance, I 
have a rather large project I am working on which I would love to 
do in D and requires a flow-graph GUI much like blender's.

Cheers!
Dec 05 2016
parent reply Mike Parker <aldacron gmail.com> writes:
On Monday, 5 December 2016 at 11:38:05 UTC, D.Rex wrote:

 Hi,

 I am sure this has been asked a thousand times before, but can 
 anyone link me to a tutorial on how to set up derelict and 
 GLFW3, I am trying to work on a project and I just can't get it 
 set up regardless of how many times I read the derelict 
 readme's.


See the Derelict documentation (linked from the README) on using 
Derelict with DUB-managed projects [1]. Summary:

Step 1: Make sure the GLFW 3 library is installed on your system. 
On Windows, that means you just put the glfw3.dll in the same 
directory in which your executable will reside. On Mac, it's 
easiest to install with Homebrew (should be 'brew install glfw' 
or 'brew install glfw3', can't recall which). On Linux, use your 
package manager. Get the dev version of the package if you want, 
but you don't need it with Derelict.

Step 2: Add 'derelict-glfw3' as a dependency to your dub.json or 
dub.sdl file (assuming you are using dub to manage your project. 
If not, see the Derelict documentation using Derelict packages 
with non-DUB projects [2]).

For dub.json:
"dependencies" : {
"derelict-glfw3": "~>3.1.1"
}

For dub.sdl:

dependency "derelict-glfw3" version="~>3.1.1"

Step 3: Import derelict.glfw3.glfw3 and somewhere in your code, 
preferably during startup, call DerelictGLFW3.load.

```
import derelict.glfw3.glfw3;
void main() { DerelictGLFW3.load(); }
```

[1] http://derelictorg.github.io/building/with-dub/
[2] http://derelictorg.github.io/building/without-dub/
Dec 05 2016
parent reply D.Rex <armstronga94 hotmail.com> writes:
On Monday, 5 December 2016 at 13:54:01 UTC, Mike Parker wrote:

 On Monday, 5 December 2016 at 11:38:05 UTC, D.Rex wrote:

 Hi,

 I am sure this has been asked a thousand times before, but can 
 anyone link me to a tutorial on how to set up derelict and 
 GLFW3, I am trying to work on a project and I just can't get 
 it set up regardless of how many times I read the derelict 
 readme's.


 See the Derelict documentation (linked from the README) on 
 using Derelict with DUB-managed projects [1]. Summary:

 Step 1: Make sure the GLFW 3 library is installed on your 
 system. On Windows, that means you just put the glfw3.dll in 
 the same directory in which your executable will reside. On 
 Mac, it's easiest to install with Homebrew (should be 'brew 
 install glfw' or 'brew install glfw3', can't recall which). On 
 Linux, use your package manager. Get the dev version of the 
 package if you want, but you don't need it with Derelict.

 Step 2: Add 'derelict-glfw3' as a dependency to your dub.json 
 or dub.sdl file (assuming you are using dub to manage your 
 project. If not, see the Derelict documentation using Derelict 
 packages with non-DUB projects [2]).

 For dub.json:
 "dependencies" : {
 "derelict-glfw3": "~>3.1.1"
 }

 For dub.sdl:

 dependency "derelict-glfw3" version="~>3.1.1"

 Step 3: Import derelict.glfw3.glfw3 and somewhere in your code, 
 preferably during startup, call DerelictGLFW3.load.

 ```
 import derelict.glfw3.glfw3;
 void main() { DerelictGLFW3.load(); }
 ```

 [1] http://derelictorg.github.io/building/with-dub/
 [2] http://derelictorg.github.io/building/without-dub/


I have done as you have said here, I have glfw3.dll into the same 
directory as the executable, and included the dependencies in the 
dub.json file, however when I run my intialization code, it gives 
me the following error:

derelict.util.exception.SharedLibLoadException src\derelict-util\source\derelict\u
il\exception.d(35): Failed to load one or more shared libraries:
	glfw3.dll - Access is denied.
----------------
0x004166B3 in void 
derelict.util.exception.SharedLibLoadException.throwNew(immutable(char)[][],
immutable(char)[][]) at
L:\dev\D\DEngine\src\derelict-util\source\derelict\util\exception.d(67)
0x0041BA52 in void 
derelict.util.sharedlib.SharedLib.load(immutable(char)[][]) at 
L:\dev\D\DEngine\src\derelict-util\source\derelict\util\sharedlib.d(144)
0x00416A78 in void 
derelict.util.loader.SharedLibLoader.load(immutable(char)[][]) at 
L:\dev\D\DEngine\src\derelict-util\source\derelict\util\loader.d(197)
0x004169C2 in void 
derelict.util.loader.SharedLibLoader.load(immutable(char)[]) at 
L:\dev\D\DEngine\src\derelict-util\source\derelict\util\loader.d(143)
0x004168B1 in void derelict.util.loader.SharedLibLoader.load() at 
L:\dev\D\DEngine\src\derelict-util\source\derelict\util\loader.d(83)
0x00402028 in _Dmain at L:\dev\D\DEngine\src\app.d(13)
0x0041C263 in 
D2rt6dmain211_d_run_mainUiPPaPUAAaZiZ6runAllMFZ9__lambda1MFZv
0x0041C227 in void rt.dmain2._d_run_main(int, char**, extern (C) 
int function(char[][])*).runAll()
0x0041C128 in _d_run_main
0x00403BA0 in main at L:\dev\D\DEngine\src\app.d(7)
0x00436AF5 in mainCRTStartup
0x73EF62C4 in BaseThreadInitThunk
0x77480719 in RtlSubscribeWnfStateChangeNotification
0x774806E4 in RtlSubscribeWnfStateChangeNotification

The code I have that runs derelictGLFW3.load() etc is as follows:

import derelict.opengl3.gl3;
import derelict.glfw3.glfw3;

int main()
{
	DerelictGL3.load();
	DerelictGLFW3.load();
	
	GLFWwindow* window;
	
	if(!glfwInit())
	{
		return -1;
	}
	
	window = glfwCreateWindow(1280,720, "D OpenGL Engine", null, 
null);
	if(!window)
	{
		glfwTerminate();
		return -1;
	}
	
	/* make window' context current */
	glfwMakeContextCurrent(window);
	DerelictGL3.reload();
	
	while(!glfwWindowShouldClose(window))
	{
		glfwSwapBuffers(window);
		glfwPollEvents();
	}
	
	glfwTerminate();
	return 0;
}
Dec 05 2016
parent reply Mike Parker <aldacron gmail.com> writes:
On Monday, 5 December 2016 at 14:40:46 UTC, D.Rex wrote:


 I have done as you have said here, I have glfw3.dll into the 
 same directory as the executable, and included the dependencies 
 in the dub.json file, however when I run my intialization code, 
 it gives me the following error:

 derelict.util.exception.SharedLibLoadException src\derelict-util\source\derelict\u
il\exception.d(35): Failed to load one or more shared libraries:
 	glfw3.dll - Access is denied.


OK, this has nothing to do with your code or with Derelict. When 
you get a SharedLibLoadException, the message it contains comes 
from the system. In this case, it's the bit that says 'Access is 
denied'. I've never encountered that while loading libraries on 
Windows. It looks like something to do with file permissions, but 
I really have no idea. You'll need to consult Google to find out 
what it means to get that message in conjunction with LoadLibrary 
(which is what Derelict is using internally).
Dec 05 2016
parent reply D.Rex <armstronga94 hotmail.com> writes:
On Monday, 5 December 2016 at 14:53:53 UTC, Mike Parker wrote:

 On Monday, 5 December 2016 at 14:40:46 UTC, D.Rex wrote:


 OK, this has nothing to do with your code or with Derelict. 
 When you get a SharedLibLoadException, the message it contains 
 comes from the system. In this case, it's the bit that says 
 'Access is denied'. I've never encountered that while loading 
 libraries on Windows. It looks like something to do with file 
 permissions, but I really have no idea. You'll need to consult 
 Google to find out what it means to get that message in 
 conjunction with LoadLibrary (which is what Derelict is using 
 internally).


On Monday, 5 December 2016 at 14:53:53 UTC, Mike Parker wrote:

Thanks for the help anyways, I shall look into this.  Are you the 
creator of Derelict?  If so do you have an e-mail or something 
similar I can contact you on regarding my project? it is heavily 
involved with D and OpenGL and I would be really interested in 
your opinion.
Dec 05 2016
parent reply D.Rex <armstronga94 hotmail.com> writes:
On Monday, 5 December 2016 at 15:00:23 UTC, D.Rex wrote:

 On Monday, 5 December 2016 at 14:53:53 UTC, Mike Parker wrote:



 On Monday, 5 December 2016 at 14:53:53 UTC, Mike Parker wrote:

 Thanks for the help anyways, I shall look into this.  Are you 
 the creator of Derelict?  If so do you have an e-mail or 
 something similar I can contact you on regarding my project? it 
 is heavily involved with D and OpenGL and I would be really 
 interested in your opinion.


Actually, I think I may know the problem with the access denied 
bit, it's too late for me to test now but I will test tomorrow.  
My D source code and the GLFW3.dll library are stored on a Linux 
file server (I am using D in Eclipse on a Windows 10 machine), so 
perhaps there is some issue with the FileServer denying access to 
certain things, so I will investigate if moving the source and 
the dll to my local machine will remove this issue, I will post 
here the results.
Dec 05 2016
parent reply Chris Wright <dhasenan gmail.com> writes:
On Mon, 05 Dec 2016 15:46:44 +0000, D.Rex wrote:

 My D source
 code and the GLFW3.dll library are stored on a Linux file server


Do DLLs have to be marked executable? I seem to recall something like 
that.
Dec 05 2016
parent D.Rex <armstronga94 hotmail.com> writes:
On Monday, 5 December 2016 at 22:36:25 UTC, Chris Wright wrote:

 On Mon, 05 Dec 2016 15:46:44 +0000, D.Rex wrote:

 Do DLLs have to be marked executable? I seem to recall 
 something like that.


Okay, so I moved my source code and the glfw3 dll to my local 
machine and lo and behold it worked, so I gather the 'access 
denied' problem I was having before was an issue regarding 
permissions on the FileServer side.  I should probably make note 
of that somewhere...
Dec 05 2016