Crash when generating VBOs

BlitzMax Forums/BlitzMax Programming/Crash when generating VBOs

SystemError51

(Posted 2013) [#1]

Hey peeps,

so either I'm completely stupid or something is wrong with my OpenGL. Basically, I'm trying to create a VBO buffer, also a framebuffer. However, when I do so, my app is crashing.

I tried with:

- glGenVertexArrays
- glGenFramebuffers

When these functions are being called, glewInit() was already called. If it helps anything to resolve the issue, I am on Windows 8 64-bit, with a Radeon HD7770 2 GB. I'm starting to suspect that this is a problem with the Radeon and the driver attempting to create said buffers on the hardware.

Any ideas?

// EDIT
In addition, I'd like to mention that I'm creating OpenGL contexts with MaxGUI. Although I'm unsure that it has impact on this, I'm mentioning it anyways.

BLaBZ

(Posted 2013) [#2]

Does it crash upon creation of the buffers or usage?

Are you querying for any fbo creation exceptions?

Local status:Int = glCheckFramebufferStatus(GL_FRAMEBUFFER);
		If(status = GL_FRAMEBUFFER_COMPLETE)
		    DebugLog "FBO Setup complete!"
		ElseIf (status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT)
			DebugLog "FBO Incomplete Attachment"
		ElseIf (status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT)
			DebugLog "FBO Incomplete Missing Attachment"		
	'	ElseIf (status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS)
	'		DebugLog "FBO Incomplete Dimensions"
	'	ElseIf (status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS)
	'		DebugLog "FBO Incomplete Formats"
		ElseIf (status = GL_FRAMEBUFFER_UNSUPPORTED)
		    DebugLog "Framebuffer Unsupported"
		Else
			DebugLog "Error"
		EndIf

SystemError51

(Posted 2013) [#3]

It crashes when attempting to create either of those buffers, for no apparent reason. I tried several variations of creating such buffers, all to no avail.

I'm yet to try it on another PC.

// EDIT

A very simple program, such as:

AppTitle = "GL Test"
SetGraphicsDriver GLGraphicsDriver()

GLGraphics 800, 600

Repeat
Until AppTerminate()

crashes at GLGraphics.

I have run the same app on another machine, which works fine. Starting to suspect a Radeon driver issue.

// EDIT 2

You won't believe this. I was using a tool named "ConEmu" for the command line things I do. Turns out that, for some reason, using ConEmu somehow interfered with the operation of the OpenGL driver.

Using a normal cmd window runs any OpenGL program, including buffer generation, perfectly fine.

JoshK

(Posted 2013) [#4]

glGenBuffers are used for VBOs, not glGenFrameBuffer. Two totally different things.