On Thursday, 26 February 2015 at 06:32:07 UTC, Gan wrote:
On Thursday, 26 February 2015 at 03:17:32 UTC, stewarth wrote:
On Thursday, 26 February 2015 at 03:01:42 UTC, Rikki Cattermole wrote:
On 26/02/2015 3:57 p.m., Gan wrote:
On Thursday, 26 February 2015 at 02:32:51 UTC, stewarth wrote:



I'd also try hacking in Window.d directly to see if even basic gl commands work, e.g. immediately after window and context creation, try rendering a triangle then tweak the context initialisation to see if
it affects anything.

It may help you track down exactly which part of the GL setup is
causing problems.

Cheers,
Stew

I know almost nothing about OpenGL but using your method(sorta):
void reportGLErrors() {
  GLenum errCode;
  const GLubyte *errString;
  if ((errCode = glGetError()) != GL_NO_ERROR)
  {
      writeln("OPEN GL ERROR: ", errCode);
  }
}

I get error code 1282 repeatedly.

From a google search someone says:
"First, glGetError() will return 1282 - invalid operation if the GL context is not current (or not yet created). So, create your context first, then call glGetError. And, verify that any parent class or member class does not call GL functions in their constructors or prior to
context being created."

Can someone with more OpenGL knowledge clarify what this means?

1. Program starts
2. Window gets created
3. Context gets created
4. Context is activated
5. Profit???

Basically before the context is created and activated you cannot call any OpenGL functions. If you do, they will error out.

The bit about constructors ext. don't worry about it. Its just about e.g. where the calls to OpenGL can exist.

Yes, my bad sorry, but whatever works. The point is dive in and start printfing about in Window.d, checking error codes to try and figure out where things become stuffed up.


Cheers,
Stew

I did what you suggested. I added a bunch of writeln and reportGLErrors. These are the results:
glMatrixMode(GL_PROJECTION);
OPEN GL ERROR: 1282



glLoadIdentity();
OPEN GL ERROR: 1282



glShadeModel(GL_FLAT);
OPEN GL ERROR: 1282


glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
OPEN GL ERROR: 1280


glHint(GL_GENERATE_MIPMAP_HINT, GL_FASTEST);
OPEN GL ERROR: 1280


glOrtho(0, vMode.width, vMode.height, 0, 1, -1);
OPEN GL ERROR: 1282


Each error happens after each line is called. I'm not sure why this happens or what it means.

According to docs: 1280 is GL_INVALID_ENUM

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