Hi!

i'm trying to get devisualization/window [1] working with some simple opengl calls. I have created a windows with opengl context using

Window window = new Window(800, 600, "My window!"w, WindowContextType.Opengl);

If i run
writeln("type: ", context.type);
writeln("toolkit version: ", context.toolkitVersion);
writeln("shading language version: ", context.shadingLanguageVersion);
i get correct information
has context
type: Opengl
toolkit version: 4.5.0 NVIDIA 347.09
shading language version: 4.50 NVIDIA

First i tried to simply call glClearColor(1,0,0,1);, this crashes the application (Program exited with code -1073741819)

I checked the function pointer with if(cast(void*)glClearColor !is null){...} and well ... it's a nullpointer the first two frames. Then i checked for nullpointer and called glClearColor(...) and glClear(...) -> no crash but the window was just frozen.

Does anyone use Devisualization/window on Windows with success?
Fyi, if i dont do any opengl calls the window seems to work, i can close it normally, it's completely white.

My example sourcecode can be found here:
https://github.com/oggs91/OpenVG_D/blob/master/demo_DvisualizationWT/source/app.d


[1] https://github.com/Devisualization/window

On 7/04/2015 10:07 a.m., ddos wrote:
> Hi!
>
> i'm trying to get devisualization/window [1] working with some simple
> opengl calls. I have created a windows with opengl context using
>
> Window window = new Window(800, 600, "My window!"w,
> WindowContextType.Opengl);
>
> If i run
> writeln("type: ", context.type);
> writeln("toolkit version: ", context.toolkitVersion);
> writeln("shading language version: ", context.shadingLanguageVersion);
> i get correct information
> has context
> type: Opengl
> toolkit version: 4.5.0 NVIDIA 347.09
> shading language version: 4.50 NVIDIA
>
> First i tried to simply call glClearColor(1,0,0,1);, this crashes the
> application (Program exited with code -1073741819)
>
> I checked the function pointer with if(cast(void*)glClearColor !is
> null){...} and well ... it's a nullpointer the first two frames. Then i
> checked for nullpointer and called glClearColor(...) and glClear(...) ->
> no crash but the window was just frozen.
>
> Does anyone use Devisualization/window on Windows with success?
> Fyi, if i dont do any opengl calls the window seems to work, i can close
> it normally, it's completely white.
>
> My example sourcecode can be found here:
> https://github.com/oggs91/OpenVG_D/blob/master/demo_DvisualizationWT/source/app.d
>
>
>
> [1] https://github.com/Devisualization/window

1) You need to check that the context has been created
	window.addOnDraw((Windowable window2) {
		IContext context = window.context;
		if (context !is null) {
2) The context needs to be activated
	bool hitContext;
	while(true) {
		import core.thread : Thread;
		import core.time : dur;
		Window.messageLoopIteration();

		IContext context = window.context;
		if (window.hasBeenClosed)
			break;
		else if (context !is null) {
			if (!hitContext) {
				context.activate;
				// init opengl stuff
				hitContext = true;
			}

			window.onDraw;
		}
		Thread.sleep(dur!"msecs"(25));
	}
2 handles 1 already, so you don't need to add 1 only 2.

it's getting warmer, window doesnt freeze anymore and opengl calls don't crash the window, but it's still all white after calling
glClearColor(1,0,1,1);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

updated src: https://github.com/oggs91/OpenVG_D/blob/master/demo_DvisualizationWT/source/app.d

On 7/04/2015 10:34 a.m., ddos wrote:
> it's getting warmer, window doesnt freeze anymore and opengl calls don't
> crash the window, but it's still all white after calling
> glClearColor(1,0,1,1);
> glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
>
> updated src:
> https://github.com/oggs91/OpenVG_D/blob/master/demo_DvisualizationWT/source/app.d

Ohhh right, call swapBuffers on the context after drawing. Probably be in the run loop (while).

On Monday, 6 April 2015 at 22:56:15 UTC, Rikki Cattermole wrote:
> On 7/04/2015 10:34 a.m., ddos wrote:
>> it's getting warmer, window doesnt freeze anymore and opengl calls don't
>> crash the window, but it's still all white after calling
>> glClearColor(1,0,1,1);
>> glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
>>
>> updated src:
>> https://github.com/oggs91/OpenVG_D/blob/master/demo_DvisualizationWT/source/app.d
>
> Ohhh right, call swapBuffers on the context after drawing. Probably be in the run loop (while).

thanks a lot, problems fixed now, i've missing your test example :) if anyone else has problems -> this works https://github.com/Devisualization/window/blob/master/test/main.d

to get the vector graphics working i had to make a small change in the pixelformatdescriptor
https://github.com/Devisualization/window/blob/master/platforms/win32/devisualization/window/context/opengl.d
PIXELFORMATDESCRIPTOR, changed stencil buffer bits from 0 to 8
you may want to change this to default 8 to avoid problems.

http://imgur.com/ME4b6ZO

On 7/04/2015 12:10 p.m., ddos wrote:
> On Monday, 6 April 2015 at 22:56:15 UTC, Rikki Cattermole wrote:
>> On 7/04/2015 10:34 a.m., ddos wrote:
>>> it's getting warmer, window doesnt freeze anymore and opengl calls don't
>>> crash the window, but it's still all white after calling
>>> glClearColor(1,0,1,1);
>>> glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
>>>
>>> updated src:
>>> https://github.com/oggs91/OpenVG_D/blob/master/demo_DvisualizationWT/source/app.d
>>>
>>
>> Ohhh right, call swapBuffers on the context after drawing. Probably be
>> in the run loop (while).
>
> thanks a lot, problems fixed now, i've missing your test example :) if
> anyone else has problems -> this works
> https://github.com/Devisualization/window/blob/master/test/main.d
>
> to get the vector graphics working i had to make a small change in the
> pixelformatdescriptor
> https://github.com/Devisualization/window/blob/master/platforms/win32/devisualization/window/context/opengl.d
>
> PIXELFORMATDESCRIPTOR, changed stencil buffer bits from 0 to 8
> you may want to change this to default 8 to avoid problems.
>
> http://imgur.com/ME4b6ZO

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