How to turn a Factor's 4X4 matrix to C array (I need a pointer float*) in
column-major order?
https://en.wikipedia.org/wiki/Row-_and_column-major_order
Thank you.

George

сб, 29 мая 2021 г. в 21:37, George Cherevichenko <
george.chereviche...@gmail.com>:

> Simple examples without matrices.
> Triangle with glDrawArrays
> https://pastebin.com/QNgGuM2B
> Rectangle with glDrawElements
> https://pastebin.com/cxDvwyqj
>
> George
>
> сб, 29 мая 2021 г. в 02:56, <sf.alexi...@spamgourmet.com>:
>
>> "Generic word my-tuple-field<< does not define a method for the fixnum
>> class. Dispatching on object: 1"
>> What does it mean?
>>
>>
>> It means you called `1 obj >>my-tuple-field` instead of `obj 1
>> >>my-tuple-field`.
>>
>> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
>> On Saturday, May 29th, 2021 at 1:47 AM, George Cherevichenko -
>> george.chereviche...@gmail.com
>> <sf.alexilin.47a524cc51.george.cherevichenko#gmail....@ob.0sg.net> wrote:
>>
>> "Generic word my-tuple-field<< does not define a method for the fixnum
>> class. Dispatching on object: 1"
>> What does it mean?
>> Now I can draw with glDrawArrays.
>>
>> George
>>
>> сб, 22 мая 2021 г. в 17:16, Ken Causey <klcau...@gmail.com>:
>>
>>> First I should be clear that I claim no special knowledge.  I'm more of
>>> an interested observer and occasional dabbler with Factor.
>>>
>>> However, a quick grep turned up these areas that may help further at
>>> least in the form of example code:
>>>
>>> https://github.com/factor/factor/tree/master/basis/opengl
>>> https://github.com/factor/factor/tree/master/extra/bunny
>>> https://github.com/factor/factor/tree/master/extra/cuda
>>> https://github.com/factor/factor/tree/master/extra/gpu
>>> https://github.com/factor/factor/tree/master/extra/grid-meshes
>>> https://github.com/factor/factor/tree/master/extra/model-viewer
>>>
>>> On Sat, May 22, 2021 at 8:01 AM George Cherevichenko <
>>> george.chereviche...@gmail.com> wrote:
>>>
>>>> There are three lines of the code which I cannot write in Factor
>>>>
>>>> glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
>>>> glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), 
>>>> (GLvoid*)0);
>>>>  glEnableVertexAttribArray(0);
>>>>
>>>> I wanted to use "with-gl-buffer" or "with-vertex-array" from Factor's 
>>>> opengl vocabulary. Are there examples of using these commands?
>>>>
>>>> George
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> сб, 22 мая 2021 г. в 00:46, Doug Coleman <doug.cole...@gmail.com>:
>>>>
>>>>> It's just C ffi calls right?
>>>>>
>>>>> On Fri, May 21, 2021 at 4:38 PM George Cherevichenko <
>>>>> george.chereviche...@gmail.com> wrote:
>>>>>
>>>>>>   It is VERY outdated. I need OpenGL3.0+
>>>>>>
>>>>>> https://learnopengl.com/code_viewer.php?code=getting-started/hellotriangle
>>>>>>
>>>>>> https://hsto.org/files/709/5ad/69c/7095ad69c2a5431083ec84dc25b35cdb.png
>>>>>>
>>>>>> George
>>>>>>
>>>>>> пт, 21 мая 2021 г. в 23:42, Ken Causey <klcau...@gmail.com>:
>>>>>>
>>>>>>> https://github.com/factor/factor/tree/master/extra/nehe
>>>>>>>
>>>>>>> On Fri, May 21, 2021 at 3:27 PM George Cherevichenko <
>>>>>>> george.chereviche...@gmail.com> wrote:
>>>>>>>
>>>>>>>> Is there an example? A rotating triangle would be enough.
>>>>>>>>
>>>>>>>> George
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